CN108104995A - Efficient rotor air prefilter - Google Patents

Abstract

The invention provides a high-efficiency rotor air pre-filter, which at least includes a base, a shell, and a swirl fan. The base and the shell are combined to form a cavity inside, and the base extends outwards with an air outlet pipe, and the inner hole of the air outlet pipe communicates with the cavity. There are also a number of deflectors distributed on the base. There are air intake holes connecting the outside and the cavity between adjacent deflectors. The swirl fan is installed in the cavity. hole; also includes the motor, the swirl fan is installed on the output shaft of the motor, and the dust discharge holes of the casing are distributed along the axis of the motor output shaft. The high-efficiency rotor air pre-filter is not affected by the engine speed, and the speed of the swirling fan is controlled within a reasonable range, so that the high-efficiency rotor air pre-filter achieves a better coarse filtration effect.

Description

High-efficiency rotor air pre-cleaner

technical field

The invention relates to an air pre-filter device, in particular to an air pre-filter for engineering machinery and agricultural machinery.

Background technique

The engine is the core part of a motor vehicle, so protection measures for the engine are essential. Among them, the air filter can effectively remove the particulate impurities in the air, thereby reducing the wear and tear on the engine interior caused by the impurities in the air. By adding an air pre-filter to the engine, it can not only prolong the service life of the air filter, reduce the dust and impurities entering the intake system, but also keep the air filter clean and make the engine run more powerfully, while improving the quality of the engine. performance, reducing downtime and operating costs.

At present, the principle of the air pre-filter is to use the suction force of the engine to rotate the air flow under the action of the blades, and the dust in the air will be thrown to the edge of the pre-filter shell under the action of centrifugal force, and the dust will be driven under the action of the swirl fan. The dust is discharged from the dust discharge hole on the casing; however, due to the different engine speeds when the engine is in use, the intake air volume is different; the rotational speed of the swirl fan will also change with the intake air volume. When the engine speed is too low (such as the engine keeps idling), the rotating speed of the swirl fan cannot realize the discharge of the dust entering the air pre-filter, which affects the coarse filtration efficiency of the pre-filter.

Contents of the invention

The technical problem to be solved by the present invention is to provide a high-efficiency rotor air pre-filter with good coarse filtration effect and stable swirl fan speed.

In order to solve the above technical problems, the present invention provides a high-efficiency rotor air pre-filter, which at least includes a base, a casing, and a swirling fan. The base and the casing are combined to form a cavity inside, and the base extends outwards with an air outlet pipe. The inner hole of the air outlet pipe It communicates with the cavity, and there are several deflectors distributed on the base. There are air intake holes connecting the outside and the cavity between the adjacent deflectors. The swirl fan is installed in the cavity. Cavities connected to the dust hole;

It also includes a motor, the swirl fan is installed on the output shaft of the motor, and the dust discharge holes of the casing are distributed along the axis of the output shaft of the motor.

After adopting such a structure, the high-efficiency rotor air pre-filter can not be affected by the engine speed, and the speed of the swirl fan can be controlled within a reasonable range, so that the high-efficiency rotor air pre-filter can achieve a better coarse filtration effect.

In order to understand the technical content of the present invention more clearly, the high-efficiency rotor air pre-filter is referred to as the pre-filter hereinafter for short.

There is also a separation tube in the cavity of the pre-filter, one end of the separation tube is set on the air outlet pipe, and the other end of the separation tube protrudes toward the direction of the swirling fan; after adopting such a structure, part of the dust can be blocked , Impurities are directly discharged from the air inlet through the outlet pipe.

The blade of the swirl fan of this pre-filter has a groove that fits the pipe wall at the other end of the separation pipe; after adopting such a structure, the length of the separation pipe is maximized to prevent dust and impurities from separating from the separation pipe and the swirl flow. The gap between the fans goes directly into the outlet duct.

The air inlet of the base of the pre-filter is provided with a filter screen; after adopting such a structure, the filter screen can pre-filter a part of long fibers, leaves and other larger foreign matter.

The air outlet pipe of the pre-filter is bound with a strong throat hoop; after adopting such a structure, the strong throat hoop facilitates the connection between the end of the air outlet pipe and the air filter bleed air pipe on the engine.

Description of drawings

Fig. 1 is a cross-sectional view of the schematic structure of the embodiment of the prefilter.

Detailed ways

As shown in FIG. 1 (for simplicity of the view, hatching of the housing 2 is omitted in FIG. 1 ).

The pre-filter comprises a base 1, a casing 2, a swirl fan 5 and a motor 4.

The base 1 is generally disc-shaped, and the center of the base 1 is extended with an air outlet pipe 11. The inner hole of the air outlet pipe 11 runs through the upper and lower end surfaces of the base 1. The lower end of the air outlet pipe 11 is bound with a strong hose clamp 12. The lower end of the air outlet pipe 11 The base 1 is connected to the air filter air intake pipe on the engine through a strong throat clamp 12, and a plurality of deflectors 14 are arranged on the base 1 outside the air outlet pipe 11, and the plurality of deflector plates 14 are evenly distributed along the air outlet pipe 11. , Between the adjacent deflectors 14, an air inlet (not shown) connecting the outside and the cavity 3 is provided, and the air inlet is covered with a filter screen 13.

The casing 2 is generally in the shape of a flat barrel with an open lower end. The combination of the casing 2 and the base 1 forms a cavity 3 inside. The side wall of the casing 2 has a dust discharge hole 21 communicating with the cavity 3 .

The motor 4 is fixed on the upper end surface of the outer wall of the housing 2, the output shaft of the motor 4 extends into the cavity 3, the swirl fan 5 is installed on the output shaft of the motor 4, the voltage of the motor 4 is DC24V, the speed is 1800r/min, the exhaust of the housing 2 The dust holes 21 are distributed along the axis of the output shaft of the motor 4 , and the air outlet pipe 11 is on the lower side in the axial direction of the output shaft of the motor 4 .

The cavity 3 is also provided with a separation pipe 6, the end of the separation pipe 6 is sleeved on the upper part of the inner hole of the air outlet pipe 11, and the other end of the separation pipe 6 protrudes toward the direction of the swirl fan 5, and the end of the swirl fan 5 The blade is provided with a groove 51 matching the pipe wall at the other end of the separation pipe 6 .

When in use, the motor 4 is driven by an external power source to drive the swirl fan 5 to rotate at a speed of about 1800r/min, and the external air enters the cavity 3 through the air inlet of the base 1, and a vortex can be formed in the cavity 3 airflow. Since the impurities mixed in the air (such as dust, rainwater, snow and other impurities) rotate together with the vortex airflow entering the cavity 3, and because the moment of inertia of the impurities is greater than that of the air, most of the impurities should be within the centrifugal force. Under the action, it is separated from the air and thrown to the edge of the housing; the impurities collide with the swirl fan 5 and move to the side wall of the cavity 3, so that the impurities will be discharged out of the pre-filter through the dust discharge hole 21 of the housing 2.

What has been described above is only one embodiment of the present invention. It should be pointed out that for those of ordinary skill in the art, some modifications and improvements can be made without departing from the principle of the present invention, and these should also be regarded as Belong to the protection scope of the present invention.

Claims (5)

1. a kind of efficient rotor air prefilter, including at least pedestal, shell, eddy flow fan, pedestal and shape inside housing combination Into cavity, pedestal is outward extended with air outlet pipe, and the endoporus of air outlet pipe is communicated with cavity, and several deflectors are also distributed on pedestal, The external air admission hole with cavity of connection is equipped between adjacent baffle, eddy flow fan is mounted in cavity, side wall of outer shell be provided with The dust exhausting hole that cavity communicates；

It is characterized in that：

Motor is further included, eddy flow fan is mounted on the output shaft of motor, and the dust exhausting hole of shell is justified along the axis of motor output shaft Week distribution.

2. efficient rotor air prefilter according to claim 1, it is characterized in that：

It is additionally provided with separating pipe in the cavity, separating pipe one side end sleeve is in air outlet pipe, and separating pipe end side is to rotation Flow fan direction is stretched out.

3. efficient rotor air prefilter according to claim 2, it is characterized in that：

The groove for agreeing with separating pipe end side tube wall is provided on the blade of the eddy flow fan.

4. efficient rotor air prefilter according to claim 1, it is characterized in that：

The air inlet position of the pedestal is equipped with filter screen.

5. efficient rotor air prefilter according to claim 1, it is characterized in that：

Strength hose clamp is banded with outside air outlet pipe.