CN215822571U - Dust removal filter screen and air cleaner with choked flow structure - Google Patents

Abstract

The utility model relates to the technical field of air filtration, and discloses a dust removal filter screen with a flow resisting structure and an air filter. The device is clean and efficient in dust removal, can not be cleaned for a long time, and has the characteristics of being free of maintenance and wide in application range.

Description

Dust removal filter screen and air cleaner with choked flow structure

Technical Field

The utility model relates to the technical field of air filtration, in particular to a dust removal filter screen with a flow blocking structure and an air filter.

Background

In the current society, rail transportation means mainly comprise transportation carriers such as diesel locomotives, electric locomotives, motor train units, high-speed rails, carriages of passenger cars and trucks, light rails, subways and the like, and road transportation means mainly comprise automobiles. Their normal operation requires the intake of a large amount of air to meet the requirements of combustion of the internal combustion engine, heat dissipation of electronic and mechanical components, and cooling of air conditioning and other facilities. Along with the suction of a large amount of air, a large amount of impurities such as sand, catkin, plant leaves, paper scraps, plastics and the like exist in the air, the impurities can cause abrasion to an internal combustion engine and the like, the service life of the internal combustion engine is shortened, and a dust removal device is usually arranged on an air supply channel of equipment in order to prevent the impurities from entering the equipment.

Dust collector mainly plays the effect with impurity air separation, and then obtains clean air, filters great particulate matter impurity, plays certain dust removal effect, but can't detach tiny dust or the less impurity of proportion (especially flotage such as plant fragment, catkin, poplar wadding), especially in the season that floats heavy or the feather wadding is more, a large amount of flocculent impurity gets into, easily makes the dust removal filter screen block, reduces air filter's life and dust removal effect relatively poor.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model aims to provide a dust removal filter screen with a flow resisting structure and an air filter.

In order to achieve the above purpose, the utility model provides the following technical scheme:

the utility model provides a dust removal filter screen with choked flow structure, dust removal filter screen includes and is separated into a plurality of groups that arrange side by the baffle and constructs the same air filter who is used for separating air impurity, air filter's both ends constitute air intake and dust exhaust mouth respectively, constitute the passageway of airing exhaust between air filter and the baffle, the one end that the baffle is close to the air intake is equipped with choked flow structure, choked flow structure is for setting up and having the streamlined lug of arcwall face about the baffle symmetry.

In the present invention, preferably, the radial cross-sectional area of the flow resisting structure is gradually reduced from the dust exhaust port to the air inlet.

In the present invention, it is preferable that the radial cross section of the flow blocking structure is peach-shaped.

In the present invention, preferably, the radial cross section of the flow resisting structure is a semi-arc shape which is convex or concave.

In the utility model, further, the air filter element comprises two symmetrically arranged guide plates with the same structure, and the distance between the two guide plates and the partition plate is gradually increased from the air inlet to one side of the dust removal opening.

In the utility model, further, a dust removal channel is formed between two guide plates, each guide plate comprises a plurality of guide plates which are arranged in parallel and at intervals, a guide channel is formed between every two adjacent guide plates, flowing air enters the dust removal channel from the air inlet, gas containing impurities is discharged from the dust discharge port, and clean air enters the air exhaust channel along the guide channels and is discharged.

In the utility model, furthermore, a flow equalizer is installed on one side of each air filter element close to the dust exhaust port, the flow equalizer is set to be a tubular structure with a dust collection channel, two sides of the dust collection channel are provided with dust collection outlets, the dust collection channel is divided into a first channel and a second channel through a baffle, the middle part of the baffle is provided with a plurality of openings, the first channel is communicated with the second channel through the openings, and the first channel is opposite to the dust exhaust port.

The utility model provides an air cleaner, includes the dust removal filter screen that has the choked flow structure, the dust removal filter screen outside fixedly connected with frame, the frame both sides are equipped with the collection dirt cavity, the collection dirt cavity with collection dirt export intercommunication.

In the present invention, preferably, the two dust collecting cavities are communicated through a dust collecting pipe, and the dust collecting pipe is used for connecting an induced draft fan.

In the present invention, it is preferable that the horizontal section of the air cleaner is a plane, a curved surface, or a circle.

Compared with the prior art, the utility model has the beneficial effects that:

(1) the utility model arranges the flow resisting structures at the end part of the clapboard, namely two sides of the air inlet, wherein the flow resisting structures are streamline convex blocks with arc surfaces, and the utility model aims to generate certain resistance to the air flowing in at high speed, even if two sides entering the dust removing channel generate static pressure, because the pressure at the two sides is higher, the dust, especially small-particle dust or impurities with smaller specific gravity (especially plant fragments, catkin, poplar catkin and other floaters) can move towards the center direction of the dust removing channel more easily, thereby improving the dust removing effect. In addition, choose for use the side to have the choked flow structure of cambered surface, because the air current when the cambered surface, produce certain vortex in the position that is close to guide plate department, and then make the regional high static pressure that forms of guide plate that is located the front end, prevent because the guide plate is longer, cause the guide plate resistance undersize of air inlet front end department, reduce dust removal effect.

(2) This practicality can make the air current that carries the dust get into the first balanced air current of collection dirt passageway and arrange to the atmosphere again from the dust removal passageway through setting up the current equalizer, helps the even reposition of redundant personnel of air current, and the requirement is no longer harsh to the amount of wind of fan.

(3) The air filter provided by the utility model has the advantages that the dust collecting cavities on the two sides are communicated through the dust collecting pipes so as to facilitate the connection of the fan, and meanwhile, the air filter can be subjected to various deformation and combination, such as a radial section of a plane structure, a curved surface structure or a circular structure, so as to meet the requirements of different installation scenes and different ventilation volumes.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model. In the drawings:

FIG. 1 is a perspective view of a self-cleaning air cleaner of the present invention;

FIG. 2 is a cross-sectional side view of a self-cleaning air cleaner of the present invention;

FIG. 3 is an enlarged view of the structure A of FIG. 2 in accordance with the present invention;

FIG. 4 is a perspective cross-sectional view of a self-cleaning air cleaner of the present invention;

FIG. 5 is an enlarged view of the structure B of FIG. 4 in accordance with the present invention;

FIG. 6 is a schematic view of a flow equalizer of a self-cleaning air cleaner according to the present invention;

FIG. 7 is a schematic view of a flow blocking structure in a self-cleaning air cleaner of the present disclosure;

FIG. 8 is a schematic view of a peach shaped choked flow structure in the present invention;

FIG. 9 is a schematic view of an inwardly concave arcuate flow obstructing structure of the present invention;

FIG. 10 is a schematic view of an outwardly convex curved flow blocking structure of the present invention;

fig. 11 is a schematic view of a baffle structure of the present invention;

FIG. 12 is a side elevational schematic view of the flat and curved air cleaner of the present invention;

FIG. 13 is a side view of the circular air cleaner of the present invention;

in the figure: 1. a dust removal filter screen; 10. a partition plate; 11. an air filter element; 110. a baffle; 1100. a flow deflector; 1100-1, a drainage surface; 1100-2, a flow guide surface; 111. an air inlet; 112. a dust exhaust port; 113. an air exhaust channel; 114. a dust removal channel; 115. a flow guide channel; 12. a flow-impeding structure; 2. an outer frame; 3. a current equalizer; 30. a first channel; 300. a first dust collection port; 301. a V-shaped cavity; 31. a second channel; 310. a second dust collecting port; 32. a baffle plate; 33. an opening; 34. a flow guide transition part; 340. a transition port; 341. a wing-shaped dust collecting surface; 4. a dust collecting cavity; 5. a dust collecting pipe; 6. and (7) mounting frames.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 2 and 3, the present invention provides a dust filter screen with a flow-resisting structure, wherein the dust filter screen 1 includes a plurality of groups of air filter elements 11 which are separated by partition plates 10 and arranged in parallel and have the same structure and are used for separating air impurities, an air inlet 111 and a dust outlet 112 are respectively formed at two ends of the air filter elements 11, and an air exhaust channel 113 is formed between the air filter elements 11 and the partition plates 10. Flowing air enters from the air inlet 111, the air containing impurities is separated by the air filter element 11 and is exhausted from the dust removal port, and clean air is exhausted to an equipment cabin and the like through the air exhaust channel 113, so that a large amount of impurities such as sand, catkin, plant leaves, paper scraps, plastics and the like in the air are prevented from entering and causing abrasion to an internal combustion engine and the like, and the service life of the internal combustion engine is shortened.

In the present invention, as shown in fig. 7, a flow blocking structure 12 is disposed at one end of the partition board 10 close to the air inlet 111, and the flow blocking structure 12 is a streamline convex block symmetrically disposed about the partition board 10 and having an arc surface. In the previous design, the flow blocking structure 12 is a protruding block disposed on the inner wall of the partition board 10, and multiple sets may be disposed according to the thickness of the dust removing filter screen 1, so as to ensure that when the thickness of the dust removing filter screen 1 is large, a sufficient static pressure can be generated at the air inlet 111. However, due to the industrial and production requirements, the thickness of the dust removal filter screen 1 needs to be reduced, and therefore, the flow blocking structure 12 is optimally designed. The streamlined lug that specifically adopts has the arcwall face, and its purpose is for producing certain resistance to the air of high-speed inflow, and streamlined design can do benefit to wind and lead, even the both sides that get into in the dust removal passageway 114 produce static pressure, because the pressure of both sides is great to make dust especially tiny particle micronic dust or the less impurity of proportion (especially plant debris, catkin, poplar wadding etc. flotage) can more easily move towards the dust removal passageway 114 central direction, thereby improve dust removal effect.

In addition, chose the choked flow structure 12 that the side has the cambered surface, this choked flow structure 12 can have various regular or irregular shapes such as the semi-circle of cambered surface, triangle-shaped, circular, ellipse, quadrangle, because the air current is when the cambered surface, produce certain vortex in the position close to deflector 110, and then make the deflector 1100 area that is located the front end form the high static pressure, prevent because the deflector 110 is longer, cause the deflector 1100 resistance of the front end of air inlet to be too little, reduce the dust removal effect.

In a preferred embodiment provided by the present application, as shown in fig. 9 and 10, the radial cross section of the flow blocking structure 12 is a semi-arc shape which is convex or concave. Aiming at the convex semi-arc shape, the high-speed airflow passes through the highest point and then extends towards the two sides outwards to generate a certain resistance effect, so that the static pressure at the air inlet 111 is increased; the concave semi-arc-shaped flow blocking structure 12 has the largest contact area with air at the air inlet 111 and the largest blocking effect, so that larger static pressure can be generated on two sides through the flow blocking structure 12, and the dust removal effect is improved.

In another embodiment provided by the present invention, as shown in fig. 8, the radial cross-sectional area of the flow blocking structure 12 is gradually reduced from the dust exhaust port 112 to the air intake port 111. When outside high-speed air current got into, the less one end in contact choked flow structure 12 cross-section at first, and the one side that is narrower relatively is limited to telling the air current contact, then gets into along the arcwall face, in the bigger and bigger time of cross-sectional diameter, the resistance that produces relatively is bigger, that is to say the static pressure of both sides is bigger, and just be close to the one end of guide plate 110 at the cambered surface afterbody and produce certain vortex effect to increase the static pressure of front side guide plate 110, make impurity in the air be more easily close to the central line. The choking structure 12 with a narrow end is selected, and the narrow end, namely the contact area with air is small, so that the resistance is small when air starts to enter, and a large amount of air enters conveniently. The radial cross section of the flow resisting structure 12 is in a peach shape, a triangular shape, an oval shape and other shapes, wherein the peach shape is an optimal shape, and because the peach shape is close to the horizontal at one side close to the guide plate 110, the installation of the guide plate 110 is facilitated, meanwhile, the turbulent flow effect generated at the point is strongest, the static pressure is largest, and particularly under the condition that the thickness of the dust removing filter screen 1 is reduced, the guide plate 110 positioned at the front end can generate high static pressure, so that impurities can better move along the direction of the central line, and the dust removing effect is best.

In the present invention, as shown in fig. 3, 4 and 8, the air filter element 11 includes two symmetrically disposed baffles 110 with the same structure, and a distance between the two baffles 110 and the partition plate 10 is gradually increased from the air inlet 111 to the dust removing opening side. Because the air enters from the air inlet 111, the air flow rate of the air inlet 111 is relatively large, and the air flow rate can be reduced in the flowing process of the atmosphere along the dust removing channel 114 in the air filter element 11.

In the present invention, further, a dust removal channel 114 is formed between two guide plates 110, each guide plate 110 includes a plurality of guide plates 1100 arranged in parallel and at intervals, a guide channel 115 is formed between adjacent guide plates 1100, flowing air enters the dust removal channel 114 from the air inlet 111, gas containing impurities is discharged through the dust discharge port 112, and clean air enters the air discharge channel 113 along the guide channel 115 and is discharged. The guide vane 1100 may be an airfoil shape (shown in the figure), an arc shape, a broken line shape, a rectangle shape, or other regular or irregular shapes. In order to facilitate the arrangement of the dust exhaust port 112, in the embodiment, the shape of the diversion transition portion 34 is similar to or completely approximate to the shape of the diversion piece 1100, so that the airflow coming out of the dust removing channel 114 cannot change the airflow direction due to the change of the shape of the transition portion, thereby better playing a role of diversion.

In a preferred embodiment of the present invention, as shown in fig. 11, the guide vane 1100 has a wing-shaped vertical cross-section, and the guide vane 1100 includes an outer convex-shaped flow guide surface 1100-1 and a smoothly arranged flow guide surface 1100-2. The flow guide surface 1100-1 is smoothly and excessively connected with the flow guide surface 1100-2, the convex flow guide surface 1100-1 is a windward surface close to the dust exhaust channel, and compared with the plane, the convex flow guide surface 1100-1 further increases the resistance of airflow, so that impurities are as few as possible close to the flow guide channel 115. Meanwhile, the convex flow guide surface 1100-1 enables a high pressure area to be formed above the flow guide surface 1100-2 more easily, and the high pressure area between two adjacent flow guide surfaces 1100-1 has a certain repulsion function, so that impurities are kept at the center line position of the dust exhaust channel.

In the present invention, as shown in fig. 2 and 6, a flow equalizer 3 is installed on one side of each air filter element 11 close to the dust discharge port 112, the flow equalizer 3 is configured as a tubular structure having a dust collection channel, dust collection outlets are disposed on two sides of the dust collection channel, the dust collection channel is divided into a first channel 30 and a second channel 31 by a baffle 32, a plurality of openings 33 are disposed in the middle of the baffle 32, the first channel 30 is communicated with the second channel 31 through the openings 33, and the first channel 30 is disposed opposite to the dust discharge port 112.

Specifically, the first dust collecting port 300 is formed on both sides of the first passage 30, the second dust collecting port 310 is formed on the opening 33 of the second passage 31, and the first dust collecting port 300 and the second dust collecting port 310 constitute a dust collecting outlet of the flow equalizer 3. The inner space of the current equalizer 3 is divided into a first channel 30 and a second channel 31 which are convenient for air flow equalization through the baffle 32, the baffle 32 is provided with an opening 33 which is used for communicating the first channel 30 with the second channel 31, and the radial section of the current equalizer 3 is gradually reduced towards two sides by taking the baffle 32 as the center, namely two side walls of the current equalizer 3 are in an arc shape, so that the inner wall of the current equalizer 3 is prevented from being impacted greatly due to high wind speed. Because the dust removal filter screen 1 is longer, the flow equalizer 3 of equal proportion is also longer, in order to prevent the middle weaker suction force dust from discharging unclean, consequently set up the first passageway 30 of flow equalizer 3, the both ends of second passageway 31 respectively into first dust collecting opening 300 and second dust collecting opening 310, make the air that contains the impurity get into first passageway 30 through dust discharging opening 112, the air that is close to flow equalizer 3 both sides is discharged by first dust collecting opening 300, the air that is close to flow equalizer 3 middle part passes through opening 33 and gets into second passageway 31, discharge by second dust collecting opening 310, so, the even reposition of redundant personnel of the air that has guaranteed to contain the impurity, thereby improve dust removal effect.

The flow guiding transition part 34 has an airfoil dust collecting surface 341, the airfoil dust collecting surface 341 is used for pushing dust from the dust removing channel 114 to the dust collecting channel, the shape of the airfoil dust collecting surface 341 is set to be convex, this is because wind can locally generate vortex on the dust collecting surface when passing through the dust collecting surface of the concave structure, block and change the flow direction of wind, be unfavorable for the flow guiding effect of the dust collecting surface to the air current, the vortex influence brought when the flow guiding transition part 34 is cut down by the airfoil dust collecting surface 341 adopting convex shape, the flow guiding effect of the airfoil dust collecting surface 341 is accelerated, and the smooth air current carrying dust is rapidly conveyed to the dust collecting channel for flow equalization and dust discharge.

In addition, the width of the opening 33 on the baffle 32 is larger than the width of the dust discharge port 112, so as to ensure that the air containing impurities discharged from the dust removal channel 114 can be completely sucked into the flow equalizer 3. Meanwhile, the cross-sectional area of the second channel 31 is larger than that of the first channel 30, so that the airflow at the outlet of the dust removing channel 114 is more uniform. The space of the first passage 30 is relatively small, and the length of the opening 33 is increased, so that dust discharging resistance is reduced, the effect of uniform dust discharging is achieved, and the problem that the dust discharging port 112 is easy to block due to long-term use is solved. And the flow equalizer 3 is integrally formed in the whole structure, so that the cost is lower.

In this embodiment, the working principle of the dust removing filter net 1 is as follows: when there is a certain speed of air flow in the outside air, the air inlet 111 faces the air flowing direction, so that the outside air enters the air filter element 11 from the air inlet 111. The external air first enters the dust removing passage 114, and impurities are present in the air entering the dust removing passage 114. Because each guide plate 110 has a certain inclination angle, it will generate a certain resistance to the airflow, so that the wall pressure in the dust removing channel 114 is increased, i.e. the static pressure is increased, and the central position of the airflow in the dust removing channel 114 is relatively fast in flow speed and small in static pressure. Therefore, the impurities such as particles, flocs, water drops, etc. entrained by the airflow of the dust removing channel 114 will flow along the central line of the dust removing channel 114 under the action of the wall pressure. And under the action of unequal static pressure, the impurities are easier to approach the direction of the central line of the dust removal channel 114, so that the impurities are more favorable for moving to the dust removal channel, enter the flow equalizer 3 from the dust removal port, equalize the flow and then are discharged.

Meanwhile, in the dust removing passage 114, when passing through the position of the air guide passage 115, a part of air enters the air guide passage 115 and flows out from the air exhaust passage 113, and the part of air is clean air. The specific principle is as follows: when the airflow enters the guide passage 115 from the dust removing passage 114, part of the energy is lost, so that the airflow speed in the guide passage 115 is slower than that in the dust removing passage 114. Therefore, when the air flow containing the impurities in the dust removing channel 114 approaches the guide flow channel 115, since the attraction force at the guide flow channel 115 is small and the inertia of the movement of the impurities cannot be overcome, that is, the air flow velocity in the dust removing channel 114 is greater than the air flow velocity in the guide flow channel 115, the impurities cannot enter the guide flow channel 115, and thus the clean air and the impurities can be separated by themselves. The ratio or difference between the airflow speed in the flow guide channel 115 and the airflow speed in the dust removing channel 114 can be adjusted by adjusting the difference between the cross sections of the two channels and adding a power source such as a fan at the channel opening.

Therefore, the clean air without impurities can enter the exhaust channel 113 from the flow guide channel 115, and the impurities such as particulate matters, floating matters and the like are gathered to the dust exhaust channel along with the airflow of the dust exhaust channel 114 and then enter the flow equalizer 3 from the dust exhaust port to be equalized and then discharged, so that the clean air and the impurities are separated by using the air filter element 11. Provide clean air through the device steadily, both avoided the impurity of gathering to block up the device, saved the trouble of artifical clearance air dust collector again, practiced thrift manpower, material resources and financial resources to can guarantee to normally work for a long time under the condition of not clearing up.

By utilizing the principle, another embodiment of the present invention provides an air cleaner, as shown in fig. 1 and 5, including the dust removing filter screen 1 with the flow resisting structure 12, the dust removing filter screen 1 is externally and fixedly connected with the outer frame 2, two sides of the outer frame 2 are provided with the dust collecting cavities 4, and the dust collecting cavities 4 are communicated with the dust collecting outlets. Wherein the dust collecting outlets are a first dust collecting port 300 and a second dust collecting port 310. The two dust collecting cavities 4 are communicated through a dust collecting pipe 5, and the dust collecting pipe 5 is used for connecting an induced draft fan. Provide outside effort for two collection dirt cavities 4 through the draught fan, for guaranteeing that collection dirt is convenient, communicate two collection dirt cavities 4 through dust collecting tube 5, wherein dust collecting tube 5 can be located multiple positions such as the filter screen 1 outside of removing dust, middle part, no longer regard as the injecing here.

In the present invention, it is preferable that the horizontal section (the direction opposite to the section in fig. 3) of the air cleaner is a plane, a curved surface, or a circle, as shown in fig. 12. Specifically, when the air cleaner is plane shape, that is to say that dust removal filter screen 1 surface also is for leveling, that is to say that the length of every air filter element 11 guarantees unanimously, so, can realize the biggest area air inlet to dust collection efficiency is also relatively higher. When the air cleaner is the curved surface, that is to say that dust removal filter screen 1 surface is the curved surface, that is to say that the installation height of every air filter 11 is inconsistent, wherein the length of baffle 10 is also inconsistent, consequently, can make dust removal filter screen 1 become the shape such as cambered surface, semicircle that have different radians, wherein the frame 2 of fixed dust removal filter screen 1 also cooperates the change of dust removal filter screen 1 to carry out the shape change to satisfy the demand of different installation scenes.

In addition, as shown in fig. 13, the air cleaner may also be cylindrical, that is, the air cleaner may rotate around a central line of the planar air cleaner to form a cylinder shape, the dust collecting cavities 4 on both sides are communicated with each other through the dust collecting pipes 5, the dust collecting pipes 5 are fixed to the outer frame 2 through the mounting frame 6 or each partition 10 is fixed and sealed with the dust collecting pipes 5, at this time, the air inlets 111 are circumferentially disposed at the outer side of the air cleaner, the flowing air is introduced through the air inlets 111, the static pressure on both sides of the flow guide plate 110 is increased through the flow blocking structure 12, so that the impurities can move along the central line direction, the air flow containing the impurities enters the flow equalizer 3 through the dust exhaust channel and the dust exhaust port 112 to equalize, the air containing the impurities is sucked out by the suction force of the fan, and the clean air is exhausted from one side through the air exhaust channel 113, thereby achieving the air dust removal effect. The air inlet 111 of the cylindrical air filter is designed annularly, so that circumferential multi-angle air inlet can be realized, the dust collecting port and the air outlet are located at two ends of the cylinder, the relative area is small, the connecting pipeline is convenient to introduce clean air into a required space, and accordingly, control over dust and clean air is facilitated.

In the present embodiment, it is preferred that,

the working principle is as follows: the air cleaner of this scheme of utilization is when carrying out air dust removal, introduce the external air that flows from air intake 111, the streamlined lug that has the arcwall face produces certain resistance to the air of high-speed inflow, streamlined design can do benefit to and lead to wind, even the both sides that get into in the dust removal passageway 114 produce the static pressure, because the pressure of both sides is great, thereby make the dust especially tiny dust of tiny particle or the less impurity of proportion (especially plant debris, catkin, flotage such as poplar wadding) can change and move towards dust removal passageway 114 central direction.

After the air flows into the dust removing channel 114, the dust is removed, the clean air enters the air exhaust channel 113 along the flow guide channel 115 and is exhausted, and the air containing impurities enters the flow equalizer 3 through the dust exhaust port 112.

Under the action of a fan, acting force for sucking out is provided in the dust collection cavity 4 and the flow equalizer 3 communicated with the integrated cavity, air containing impurities enters the first channel 30 through the dust exhaust port 112, air close to two sides of the flow equalizer 3 enters the dust collection cavity 4 through the first dust collection port 300, air close to the middle of the flow equalizer 3 enters the second channel 31 through the opening 33 and enters the dust collection cavity 4 through the second dust collection port 310, and finally air in the dust collection cavity 4 is sucked out by the fan.

So, so that the separation of clean air and impurity has been realized, clean air is provided to the equipment compartment steadily, and the impurity of having avoided gathering blocks up air dust collector to can guarantee to normally work for a long time under the condition of not clearing up, have stronger automatically cleaning, non-maintaining ability.

The above description is intended to describe in detail the preferred embodiments of the present invention, but the embodiments are not intended to limit the scope of the claims of the present invention, and all equivalent changes and modifications made within the technical spirit of the present invention should fall within the scope of the claims of the present invention.

Claims (10)

1. The utility model provides a dust removal filter screen with choked flow structure, its characterized in that, dust removal filter screen (1) includes and is separated into a plurality of groups structures that arrange side by baffle (10) and the same air filter (11) that are used for separating air impurity, the both ends of air filter (11) constitute air intake (111) and dust exhaust mouth (112) respectively, constitute air exhaust passageway (113) between air filter (11) and baffle (10), the one end that baffle (10) are close to air intake (111) is equipped with choked flow structure (12), choked flow structure (12) are for setting up and having the streamlined lug of arcwall face about baffle (10) symmetry.

2. The dust removal filter screen with the flow blocking structure is characterized in that the radial cross-sectional area of the flow blocking structure (12) is gradually reduced from the dust exhaust port (112) to the air inlet (111).

3. A dusting screen with flow-obstructing structures according to claim 2, characterised in that the radial cross-section of the flow-obstructing structures (12) is peach-shaped.

4. The dust screen with a flow blocking structure according to claim 1, wherein the radial cross section of the flow blocking structure (12) is a semi-arc shape which is convex or concave.

5. The dust removal filter screen with the flow resisting structure is characterized in that the air filter element (11) comprises two symmetrically arranged guide plates (110) with the same structure, and the distance between the two guide plates (110) and the partition plate (10) is gradually increased from the air inlet (111) to the dust removing opening side.

6. The dust removing filter screen with the flow resisting structure is characterized in that a dust removing channel (114) is formed between two guide plates (110), each guide plate (110) comprises a plurality of guide plates (1100) which are arranged in parallel and at intervals, a guide channel (115) is formed between every two adjacent guide plates (1100), flowing air enters the dust removing channel (114) from an air inlet (111), gas containing impurities is discharged through a dust discharging port (112), and clean air enters an air discharging channel (113) along the guide channel (115) and is discharged.

7. The dust removal filter screen with the flow resisting structure is characterized in that a flow equalizer (3) is installed on one side, close to the dust exhaust port (112), of each air filter element (11), the flow equalizer (3) is set to be of a tubular structure with a dust collection channel, dust collection outlets are arranged on two sides of the dust collection channel, the dust collection channel is separated into a first channel (30) and a second channel (31) through a baffle (32), a plurality of openings (33) are formed in the middle of the baffle (32), the first channel (30) is communicated with the second channel (31) through the openings (33), and the first channel (30) is opposite to the dust exhaust port (112).

8. An air cleaner, characterized in that, including the dust removal filter screen with choked flow structure of any one of claims 1-7, the outside of the dust removal filter screen (1) is fixedly connected with an outer frame (2), two sides of the outer frame (2) are provided with dust collection cavities (4), and the dust collection cavities (4) are communicated with the dust collection outlet.

9. An air cleaner according to claim 8, wherein the two dust collecting cavities (4) are communicated through a dust collecting pipe (5), and the dust collecting pipe (5) is used for connecting an induced draft fan.

10. An air cleaner according to claim 8 wherein the horizontal cross-section of the air cleaner is planar, curved or circular.

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