CN201011327Y

CN201011327Y - Air strainer

Info

Publication number: CN201011327Y
Application number: CNU2007200177952U
Authority: CN
Inventors: 李建国; 王全富
Original assignee: BENGBU JINWEI FILTERS Co Ltd
Current assignee: BENGBU JINWEI FILTERS Co Ltd
Priority date: 2007-01-26
Filing date: 2007-01-26
Publication date: 2008-01-23
Anticipated expiration: 2017-01-26

Abstract

The utility model relates to an air pre-filter, whose vertical round housing has a top opening internally provided with a plurality of inclined air guide vanes in even circumferential distribution, the lower opening is internally provided with a horizontal blocking cover filled with a vertical round air outtake pipe and a dust discharge bag; the height of the housing is 1 to 1.5 times of the inner diameter of the housing, and the inner diameter of the air outtake pipe is 1.5 to 2.5 times of the inner diameter of the housing; moreover, the inner side of the air guide vane is fixedly connected with the vertical round center pipe with sealed top and open bottom, while the outside is fixedly connected with the circumferential inner wall of the housing; the top of the air outtake pipe extends into the housing, and the height of the air outtake pipe is 1.25 to 5 times of the height of the pipe section positioned in the housing; besides, a dust storing cavity communicating with a dust discharging bag is formed between the pipe section in the housing of the air outtake pipe, the housing and the blocking cover, and the bottom of a vertical round air intake net contacts the air guide vane through the top opening of the housing, while the air intake cap connected with the center pipe is arranged at the top of the air intake net. The utility model has the advantages of comparatively high filtering efficiency and comparatively low cost.

Description

Air strainer

Technical field

The utility model relates to a kind of air filtration and purification apparatus that is installed on the motor car engine, particularly relates to a kind of air strainer.

Background technique

At present, be installed in that air strainer (air-strainer) air strainer before on the motor car engine is of a great variety, structure is different (as benzvalene form, eddy flow tubular type strainer etc.).According to existing industry technology standard, the filter efficiency of benzvalene form strainer 〉=80%, filter efficiency 〉=90% of eddy flow tubular type strainer.But in use, the actual filtration efficient of benzvalene form strainer is below 75%, and the actual filtration efficient of eddy flow tubular type strainer is about 80%.Therefore, existing air strainer ubiquity the low defective of filter efficiency, has so just shortened the working life of motor car engine greatly.For improving filter efficiency, the manufacturer that has does not stint and adopts precious materials, labyrinth, so that cost is higher.

The model utility content

The purpose of this utility model is to overcome the shortcoming of above-mentioned prior art, provides a kind of filter efficiency higher, lower-cost air strainer.

For achieving the above object, the utility model provides a kind of air strainer, some inclinations and circumferential uniform wind guiding blade are arranged in the upper end open of its vertical shape circular housing, have in the lower ending opening vertical circular steam outlet pipe and dust-exhausting bag are housed on horizontal door and the door, the height of shell is 1～1.5 times of internal diameter of outer cover, the internal diameter of shell is 1.5～2.5 times of steam outlet pipe internal diameter, the uncovered vertical shape circular central pipe in the inboard of wind guiding blade and last end closure and lower end is affixed, the outside is affixed with the inner circumferential wall of shell, the upper end of steam outlet pipe puts in the shell, the height of steam outlet pipe is 1.25～5 times that steam outlet pipe is in interior that section body height of shell, steam outlet pipe is in that section body and the shell in the shell, form a dust cavity that communicates with dust-exhausting bag between the door, the upper end open that shell is passed in the lower end of the circular air inlet net of vertical shape contacts with wind guiding blade, with the upper end of the joining air inlet calotte of center tube at the air inlet net.

Steam outlet pipe is communicated with air-strainer on the motor car engine, and like this, this air strainer just is installed in before the air-strainer on the motor car engine, can normally use.

During use, the motor car engine of work makes in this air strainer and produces negative pressure (at this moment, dust-exhausting bag is in closed state), air passes the air inlet net and is sucked in the shell between the adjacent wind guiding blade, the wind guiding blade that tilts has changed the flow direction of air and has produced eddy current, makes the air that enters in the shell be rotated by centrifugation.Like this, under the centrifugal action that is produced, airborne most pollutants (as dust, foul, rainwater, snow etc.) are separated and fall into dust cavity, when motor car engine quits work, dust-exhausting bag is opened automatically, makes that the pollutant in the dust cavity is discharged from through dust-exhausting bag.The air that cleans after the coarse filtration enters in the motor of Motor Vehicle through steam outlet pipe, air-strainer successively.

After adopting such structure, this air strainer is the purpose that reaches separating contaminants by the principle of centrifugal force, its reasonable structural design has improved centrifugal force greatly, guaranteed under the situation of minimum drag, reach best filtering effect, therefore, the filter efficiency of this air strainer is higher, after tested, but the filtering of this air strainer enters in its interior air and surpasses 90% pollutant, be that filter efficiency reaches more than 90%, so just prolonged the working life of motor car engine greatly; In addition, this air strainer only is made up of several parts, and simple in structure, therefore, the cost of this air strainer is lower.

This air strainer is widely applicable for the engineering machinery of working in the rugged environment, agriculture and forestry machinery, fixed equipment, special vehicle, passenger vehicle, bus etc.

Description of drawings

Fig. 1 is the structural representation of the utility model air strainer;

Fig. 2 is the A-A sectional view of Fig. 1.

Embodiment

Below in conjunction with accompanying drawing the utility model air strainer is specifically described:

Referring to Fig. 1, Fig. 2, there are 9 to tilt and circumferential uniform wind guiding blade 2 in the upper end open of the vertical shape circular housing 1 of the utility model air strainer, horizontal door 1a is arranged in the lower ending opening, vertical circular steam outlet pipe 10 is equipped with in the center region of door 1a, the outer rim place, bottom surface of door 1a is communicated with vertical dust flue 1b, the dust-exhausting bag 11 that rubber material is made is sleeved on the bottom of dust flue 1b, the height of shell 1 is 31cm, the internal diameter of shell 1 is 23.8cm, like this, the height of shell 1 is about 1.30 times of shell 1 internal diameter, the internal diameter of steam outlet pipe 10 is 12.8cm, like this, the internal diameter of shell 1 is about 1.86 times of steam outlet pipe 10 internal diameters, the uncovered vertical shape circular central pipe 5 in the inboard of wind guiding blade 2 and last end closure and lower end is affixed, the outside is affixed with the inner circumferential wall of shell 1, angle between wind guiding blade 2 and horizontal plane is 32 degree, the upper head plate center of center tube 5 has perforation (omitting the piece number of perforation in the accompanying drawing), nut 8 be installed in center tube 5 the upper head plate bottom surface and with the perforation coaxial line, the upper end of steam outlet pipe 10 puts in the shell 1, the height of steam outlet pipe 10 is 32cm, the height that steam outlet pipe 10 is in that section body in the shell 1 is 17cm, like this, the height of steam outlet pipe 10 is about steam outlet pipe 10 and is in 1.88 times of that section body height in the shell 1, steam outlet pipe 10 is in that section body and the shell 1 in the shell 1, form one and dust flue 1b between the door 1a, the dust cavity 9 that dust-exhausting bag 11 communicates, the upper end open that shell 1 is passed in the lower end of the circular air inlet net 3 of vertical shape contacts with wind guiding blade 2, the air inlet cap 4 that the center has a through hole covers on the upper end (omitting the piece number of through hole in the accompanying drawing) of air inlet net 3, the lower end of double threaded screw 7 spins with nut 8 after passing the perforation of the through hole of air inlet cap 4 and center tube 5 successively, upper end spinning one and the air inlet cap 4 tight fastening screw nuts 6 that contact, like this, air inlet cap 4 links by double threaded screw 7 with center tube 5.

Air inlet net 3, air inlet cap 4, dust-exhausting bag 11 equal buyables.

The utility model air strainer adopts rationally simple structural design, has overcome the shortcoming of existing air strainer, under the prerequisite that increases minimum drag, improves filtering effect to greatest extent, thereby has higher, the lower-cost advantage of filter efficiency.

For the filter efficiency of checking the utility model air strainer higher, existing air strainer, the utility model air strainer are carried out the test stand performance comparative trial respectively, and test result sees Table I (the former strainer in the Table I is meant that existing air strainer, this strainer are meant the utility model air strainer).

Table I

Air strainer		Test method	Filter efficiency %
			Filter efficiency %		Technical requirements	Test result
			Control group one	Former strainer	Technical requirements	Test result	JB/T9747-2005 combustion air cleaner test method	≥80 JB/T 9755	80.25
This strainer	90.32			Former strainer					80.25
This strainer	90.32	Control group two		Former strainer	JB/T9747-2005 combustion air cleaner test method	≥90 JB/T 9755			88.73
This strainer	93.5			Former strainer					88.73
This strainer	93.5		Control group three	Former strainer			JB/T9747-2005 combustion air cleaner test method	≥93 JB/T 9755	91.5
This strainer	95.65			Former strainer					91.5

By Table I as seen, the utility model air strainer is compared with existing air strainer, its test room's filter efficiency is significantly improved, under the actual user mode of the utility model air strainer therefore, the filter efficiency of (being that it is installed in before the air-strainer on the motor car engine) also can be significantly improved.

In sum, the filter efficiency of the utility model air strainer is higher.Like this, will help significantly reducing the pollutant that enters engine aspirating system, reduce the wearing and tearing between engine piston, cylinder sleeve, prolong the working life of motor, improve engine power, for advantageous conditions has been created in the raising of engine performance.

Above-described only is a kind of mode of execution of the utility model air strainer.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the utility model principle, can also make some modification and improvement, these also should be considered as belonging to protection domain of the present utility model.Such as: the sheet number of wind guiding blade can determine as required flexibly, angle between wind guiding blade and horizontal plane can determine in the scope of 25～35 degree as required flexibly, outer cover height, internal diameter of outer cover can determine internal diameter of outer cover flexibly within the multiple scope at both under the precondition that the flow of guaranteeing the utility model air strainer and motor car engine is complementary, steam outlet pipe internal diameter and steam outlet pipe height, that section body height that steam outlet pipe is in the shell can guarantee that the utility model air strainer reaches under the precondition of optimum filtration efficient decision flexibly within the above two and both multiple scopes of back.

Claims

1. air strainer, some inclinations and circumferential uniform wind guiding blade are vertically arranged in the upper end open of shape circular housing, have in the lower ending opening vertical circular steam outlet pipe and dust-exhausting bag are housed on horizontal door and the door, the uncovered vertical shape circular central pipe in the inboard of wind guiding blade and last end closure and lower end is affixed, the outside is affixed with the inner circumferential wall of shell, the upper end open that shell is passed in the lower end of the circular air inlet net of vertical shape contacts with wind guiding blade, with the upper end of the joining air inlet calotte of center tube at the air inlet net, it is characterized in that: the height of shell is 1～1.5 times of internal diameter of outer cover, the internal diameter of shell is 1.5～2.5 times of steam outlet pipe internal diameter, the upper end of steam outlet pipe puts in the shell, the height of steam outlet pipe is 1.25～5 times that steam outlet pipe is in interior that section body height of shell, and steam outlet pipe is in that section body and the shell in the shell, form a dust cavity that communicates with dust-exhausting bag between the door.