CN217055417U

CN217055417U - Cyclone separator and air filtering device

Info

Publication number: CN217055417U
Application number: CN202220610740.7U
Authority: CN
Inventors: 张安京; 崔志勇; 彭博; 常勇强; 陈冲
Original assignee: Weichai Power Co Ltd
Current assignee: Weichai Power Co Ltd
Priority date: 2022-03-21
Filing date: 2022-03-21
Publication date: 2022-07-26
Anticipated expiration: 2032-03-21

Abstract

The utility model discloses a cyclone and air cleaner, separator include center tube and outer tube, and the center tube includes whirl portion and backward flow portion, and whirl portion stretches into the inside of outer tube, and has air inlet gap between the outer wall of whirl portion and the inner wall of outer tube, and the periphery of whirl portion is provided with the whirl blade, and the terminal parallel and level of end and whirl blade of whirl portion, whirl blade and whirl portion are integrated into one piece's structure, and the inner wall of center tube is provided with the water conservancy diversion inclined plane. The cyclone blades and the central pipe are integrally formed, so that the outer diameter of the cyclone part is reduced, and the air inlet gap is increased, so that the gas entering the cyclone separator is increased, the air inlet efficiency is improved, and the flowing efficiency of the gas in the separator is improved. The inner wall of center tube is provided with the water conservancy diversion inclined plane, and inside the clean gas of water conservancy diversion inclined plane guide backward flow to the center tube, resistance when having reduced the clean gas backward flow reduced the on-the-way loss, more adds the separation that is favorable to clean gas and dust, improves the efficiency of clean gas backward flow.

Description

Cyclone separator and air filtering device

Technical Field

The utility model belongs to the technical field of air cleaner, concretely relates to cyclone and air cleaner.

Background

Because all there are great particle impurity such as high dust concentration environment and straw on engineering machine tool, the agricultural machine, and need guarantee the maintenance cycle, require to promote by a wide margin to empty prefiltration efficiency of straining. A commonly used high-efficiency pre-filtering structure is a counter-flow cyclone tube structure.

The inner tube and the outer tube that the cover was established are drawn together to the counter-current whirl pipe, and when using, dirty air gets into the whirl intraduct through the air inlet between inner tube and the outer tube to the inside guide vane that is equipped with of whirl pipe, the air current produces rotatoryly through guide vane, and the dust in the rotatory back air obtains centrifugal force and begins to advance along the outer tube inner wall rotation, discharge the outer tube at last. The separated clean air can be turned back by 180 degrees and enters the next stage along the inner pipe, thereby achieving the purpose of separating dust. However, the rotation angle of the guide vane of the existing counter-flow type cyclone tube structure is large, and the path of clean air returning to the inner tube after passing through the guide vane is long, so that the resistance is obviously increased, and the air flow efficiency and the maintenance period are further influenced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a cyclone and air filter to the resistance that receives after solving gas and dust separation in the air filter is big, problem that flow efficiency is low.

The utility model discloses the technical scheme who adopts does:

the utility model provides a cyclone separator, includes center tube and outer tube, the center tube includes whirl portion and backward flow portion, whirl portion stretches into the inside of outer tube, just the outer wall of whirl portion and air gap has between the inner wall of outer tube, the periphery of whirl portion is provided with the whirl blade, the end of whirl portion with the terminal parallel and level of whirl blade, just the whirl blade with whirl portion is integrated into one piece's structure, the inner wall of center tube is provided with the water conservancy diversion inclined plane.

The inside of center tube has return passage, the terminal of whirl portion towards one side of return passage is provided with the chamfer, in order to form the water conservancy diversion inclined plane.

The swirl vane is provided with a flow guiding section and a swirl section, the flow guiding section extends along the axis direction of the swirl part, an included angle is formed between the swirl section and the flow guiding section, and the length of the swirl section along the axis direction of the swirl part is smaller than that of the flow guiding section along the axis direction of the swirl part.

The center pipe has a return passage inside, and a partial area of the swirling portion is collapsed toward the return passage to form the guide slope at an inner wall of the swirling portion.

The outer tube includes extension section and reducing section, the extension section encircle in the periphery of whirl portion, the reducing section has the orientation the proximal end of extension section, and keep away from the distal end of extension section, the internal diameter of reducing section certainly the proximal end to the distal end is the shrink gradually.

The periphery of backward flow portion is provided with first installation arch, the periphery of reducing section is provided with the second installation arch.

The inner wall of the reducing section is provided with a dust collecting groove.

The wall of the dust collecting groove close to one side of the central pipe is higher than the wall of the dust collecting groove far away from one side of the central pipe.

The swirl vanes are provided with positioning parts, the inner wall of the outer pipe is provided with matching parts, and the positioning parts are matched with the matching parts to limit the movement of the central pipe relative to the outer pipe.

The utility model also discloses an air filter, including the casing, still include foretell cyclone, air filter still includes the second grade filtering component, the second grade filtering component intercommunication the center tube.

Since the technical scheme is used, the utility model discloses the beneficial effect who gains does:

1. the traditional separator is characterized in that the cyclone blades are fixedly connected to the sleeve, and then the sleeve is sleeved on the central tube, and the sleeve has a certain thickness, so that the inner diameter of the cyclone part is increased after the sleeve is sleeved on the periphery of the central tube, and the air inlet gap is reduced. The utility model discloses a will swirl vane with center tube integrated into one piece has reduced the external diameter of whirl portion, and then increased the clearance of admitting air makes to get into cyclone's gaseous greatly increased has improved the efficiency of admitting air, and is gaseous flow efficiency in the separator. And the inner diameter of the central tube can be further increased, so that the caliber of the inner channel of the central tube is increased, and the flow speed and the flow efficiency of the clean gas are further improved.

Furthermore, the inner wall of center tube is provided with the water conservancy diversion inclined plane, the clean gas of water conservancy diversion inclined plane guide flows back extremely inside the center tube, resistance when having reduced the clean gas backward flow has reduced the on-the-way loss, is favorable to the separation of clean gas and dust more to and improve the efficiency of clean gas backward flow.

2. As a preferred embodiment of the utility model, the whirl blade has drainage section and whirl section, the drainage section is followed the axis direction of whirl portion extends, the whirl section with the contained angle has between the drainage section, the whirl section is followed the length of the axis direction of whirl portion is less than the drainage section is followed the length of the axis direction of whirl portion. Through shortening the whirl blade the extension length of whirl section is guaranteeing that gaseous and dust's separation effect under the prerequisite, shortens gaseous from getting into admit air clearance extremely backward flow extremely the inside route of center tube reduces gaseous on the way loss, reduces the resistance of admitting air by a wide margin, improves the ash content of separator effectively prolongs the maintenance cycle of separator.

3. As a preferred embodiment of the present invention, the outer tube includes an extension section and a reducing section, the extension section surrounds the periphery of the swirling portion, the reducing section has a direction toward the proximal end of the extension section and away from the distal end of the extension section, and the inner diameter of the reducing section gradually shrinks from the proximal end toward the distal end. After the dust and the clean gas are separated, the dust is discharged through the outer pipe, and along with the movement of the dust in the outer pipe, the inner diameter of the outer pipe is gradually contracted, so that the pressure in the reducing section is improved, the flow speed of the dust is improved, the dust discharge is accelerated, and the dust is prevented from accumulating in the outer pipe.

4. As a preferred embodiment of the present invention, the swirl vanes are provided with positioning portions, the inner wall of the outer tube is provided with a fitting portion, the positioning portions and the fitting portion are fitted to restrict the movement of the central tube relative to the outer tube. After the positioning part is matched with the matching part, the central tube and the outer tube are fixed and do not move relatively, so that the position stability of the central tube and the outer tube is improved, and the problems that the central tube moves relative to the outer tube under the pushing of airflow, the flow path of the airflow in the separator is increased, the resistance is increased, or the central tube is separated from the outer tube are solved.

5. The utility model also discloses an air filter, including the casing, still include foretell cyclone, air filter still includes the second grade filtering component, the second grade filtering component intercommunication the center tube. Air cleaner utilizes the aforesaid cyclone plays the air prefilter effect, and air admission in the separator, dust, impurity of great granule etc. warp in the air separator whirl and clean air separation, clean air warp the center tube flows extremely in air cleaner's the second grade filter assembly, further purifies. And the inner wall of the central tube is provided with the flow guide inclined plane, so that the resistance of the clean gas during counter flow is reduced, the on-way loss is reduced, the separation of the clean gas and dust is facilitated, and the flow efficiency of the clean gas is improved.

Drawings

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

fig. 1 is an exploded view of the cyclone separator according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of the cyclonic separator of FIG. 1, with arrows indicating the direction of airflow;

FIG. 3 is an enlarged view of area A of FIG. 2;

FIG. 4 is a cross-sectional view of the cyclone separator according to another embodiment of the present invention;

FIG. 5 is a schematic view of the center tube according to an embodiment of the present invention;

FIG. 6 is an axial view of the center tube of FIG. 5;

FIG. 7 is a cross-sectional view of the cyclone separator according to yet another embodiment of the present invention;

FIG. 8 is an enlarged view of area B of FIG. 7;

fig. 9 is an enlarged view of region C in fig. 7.

Wherein:

1, a central tube; 11 a reflux part; 111 a return channel; 12 a swirling part; 121 intake gap; 122 a flow guiding inclined plane; 13 swirl vanes; 131 a drainage section; 132 swirl section; 133 a positioning part; 14 a first mounting projection;

2, an outer tube; 21 an extension section; 211 an engaging part; 22 a reducing section; 221 a dust collecting groove; 23 second mounting projections.

Detailed Description

In order to more clearly explain the overall concept of the present invention, the following detailed description is given by way of example in conjunction with the accompanying drawings.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

In addition, in the description of the present invention, it should be understood that the terms "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. In the description herein, references to the terms "embodiment," "an example" or "specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

As shown in fig. 1 to 9, a cyclone separator includes a central tube 1 and an outer tube 2, the central tube 1 includes a cyclone portion 12 and a backflow portion 11, the cyclone portion 12 extends into the outer tube 2, an air inlet gap 121 is provided between an outer wall of the cyclone portion 12 and an inner wall of the outer tube 2, a cyclone blade 13 is provided on an outer periphery of the cyclone portion 12, a tip of the cyclone portion 12 is flush with a tip of the cyclone blade 13, the cyclone blade 13 and the cyclone portion 12 are integrally formed, and a guide slope 122 is provided on an inner wall of the central tube 1.

In particular use, the central tube 1 is connected to other components of the engine, for example, in one embodiment, the cyclone separator serves as a pre-filtering assembly in an air filter device of the engine for initially filtering air entering the air filter device, and the central tube 1 is communicated with a next-stage filtering assembly of the air filter device. Since the engine is in a suction state during operation, after external air enters the cyclone separator through the air inlet gap 121, cyclone flow is generated by the guidance of the cyclone blades 13, and the mass of dust, impurities and the like is large, so that the cyclone flow effect is stronger, the external air further flows forward along the outer pipe 2 along the inner wall of the outer pipe 2, and the mass of the gas is small, so that 180-degree turning is generated under the suction force of the engine, and the gas flows back from the central pipe 1, so that the gas is separated from the dust.

The traditional separator is characterized in that the cyclone blades are fixedly connected to the sleeve, and then the sleeve is sleeved on the central tube, and the sleeve has a certain thickness, so that the inner diameter of the cyclone part is increased after the sleeve is sleeved on the periphery of the central tube, and the air inlet gap is reduced. The utility model discloses a will swirl vane 13 with 1 integrated into one piece of center tube has reduced the external diameter of whirl portion 12, and then has increased air intake gap 121 makes to get into cyclone's gaseous greatly increased has improved the efficiency of admitting air, and is gaseous flow efficiency in the separator. And the inner diameter of the central tube 1 can be further increased, so that the caliber of the inner channel of the central tube 1 is increased, and the flow speed and the flow efficiency of the clean gas are further improved.

Preferably, as shown in fig. 5, the swirl vanes 13 are provided in plurality and spaced apart from each other in the circumferential direction of the swirl portion 12.

Meanwhile, the tail ends of the cyclone blades 13 are flush with the tail ends of the cyclone parts 12, so that after the airflow is subjected to cyclone by the cyclone blades 13, the centrifugal force of the air is the largest, the separating capacity is the strongest, the filtering efficiency and the ash containing amount of the separator are greatly improved, and the maintenance period of the separator is effectively prolonged. And the return path of the airflow is shortened, and the flow efficiency is improved.

Furthermore, the inner wall of center tube 1 is provided with water conservancy diversion inclined plane 122, water conservancy diversion inclined plane 122 guide clean gas backward flow extremely inside the center tube 1, resistance when having reduced clean gas backward flow has reduced the on-way loss, is favorable to the separation of clean gas and dust more to and improve the efficiency of clean gas backward flow.

It should be noted that, because the cyclone separator of the present invention is used for the pre-filtering part of the air filtering device, it is only used for coarse filtering the air, and separating the dust and impurities with larger particles in the air. Thus, reference herein to "clean air" or "clean gas" is to air entering the separator and does not refer to absolutely pure air.

It should be noted that, the forming manner of the diversion inclined plane 122 is not specifically limited in the present invention, and it may be one of the following embodiments:

the first implementation mode comprises the following steps: in the present embodiment, as shown in fig. 4, the central tube 1 has a return passage 111 inside, and a partial area of the swirling portion 12 is collapsed toward the return passage 111 to form the guide slope 122 on the inner wall of the swirling portion 12.

The swirling portion 12 is collapsed toward the return passage 111, the flow guide slope 122 is formed in the return passage 111, and the outer diameter of the swirling portion 12 is reduced, so that the air intake gap 121 is further increased, the air flow area is increased, and the air intake efficiency is improved.

The second embodiment: in the present embodiment, as shown in fig. 2 to 3, the inside of the center tube 1 has a return passage 111, and the tip of the swirling portion 12 is chamfered toward the side of the return passage 111 to form the guide slope 122.

Through the end of whirl portion 12 sets up the chamfer to form water conservancy diversion inclined plane 122 when guaranteeing the water conservancy diversion effect, improves clean air and flows efficiency against current, has reduced the processing degree of difficulty, has improved productivity ratio.

As a preferred example of the present embodiment, as shown in fig. 5, the swirl vane 13 has a flow guiding section 131 and a swirl section 132, the flow guiding section 131 extends along the axial direction of the swirl portion 12, an included angle is formed between the swirl section 132 and the flow guiding section 131, and the length of the swirl section 132 along the axial direction of the swirl portion 12 is smaller than the length of the flow guiding section 131 along the axial direction of the swirl portion 12.

The swirl vanes 13 are divided into the flow guiding section 131 and the swirl section 132, the flow guiding section 131 is mainly used for guiding the airflow to enter the separator, and the swirl section 132 is used for generating swirl by the airflow. An included angle is formed between the cyclone segment 132 and the flow guiding segment 131, so that the longer the extension length of the cyclone segment 132 is, the larger the windward area of the cyclone segment 132 is, the stronger the airflow is blocked, and meanwhile, the smaller the gap between two adjacent cyclone blades 13 is, so that the extension length of the cyclone segment 132 directly affects the air intake efficiency of the separator.

This embodiment sets up to be greater than through the extension of drainage section 131 extension of structure of whirl section 132's extension shortens on the basis of guaranteeing the whirl effect whirl extension of whirl section 132 has then reduced the windward area of whirl section 132 has reduced the resistance of whirl section 132 to the air current for it is more smooth and easy to admit air, has improved air intake efficiency.

Further, generally, the bending angle of the swirl vane of the counter-flow separator is 46 ° to 48 °, and as shown in fig. 5, the included angle α between the flow guiding section 131 and the swirl section 132 of the swirl vane of this embodiment is 40 ° to 42 °, so as to reduce the bending angle of the swirl vane 13 compared with the structure of the existing swirl vane, thereby greatly reducing the air intake resistance, increasing the ash holding capacity of the separator and effectively prolonging the maintenance period of the separator under the condition that the separation capacity of the separator is not changed.

As a preferred embodiment of the present invention, as shown in fig. 1, 2 and 4, the outer tube 2 includes an extension section 21 and a reducing section 22, the extension section 21 surrounds the periphery of the swirling portion 12, the reducing section 22 has a proximal end facing the extension section 21 and a distal end away from the extension section 21, and the inner diameter of the reducing section 22 gradually decreases from the proximal end to the distal end.

After the dust is separated from the clean gas, the dust is discharged from the outer tube 2, and along with the dust moving in the outer tube 2, the inner diameter of the outer tube 2 is gradually contracted, so that the pressure in the reducing section 22 is increased, the flow rate of the dust is increased, the dust discharge is accelerated, and the dust is prevented from being accumulated in the outer tube 2.

Further, as shown in fig. 1 to 2, the circumference of the backflow part 11 is provided with a first mounting protrusion 14, and the circumference of the reduced diameter section 22 is provided with a second mounting protrusion 23.

The first mounting protrusions 14 and the second mounting protrusions 23 are arranged, so that the cyclone separator can be conveniently mounted and connected, and the connection stability is improved. For example, in one embodiment, the cyclone separator is disposed between an upper partition and a lower partition of the air cleaner assembly, the first mounting protrusion 14 abuts the upper partition of the air cleaner assembly, and the second mounting protrusion 23 abuts the lower partition of the air cleaner assembly. Under the abutting action of the first mounting boss 14 and the second mounting boss 23, the cyclone separator can be stably fixed on the air filter device.

As a preferred example of the present embodiment, as shown in fig. 7 to 8, a dust collecting groove 221 is provided on the inner wall of the reducing section 22.

After the airflow passes through the swirling action of the swirling vanes 13, the clean air is separated from the dust, the dust clings to the inner wall of the outer tube 2 in a swirling path and continues to flow forwards, but the kinetic energy of the dust is gradually reduced as the dust moves forwards, so the dust is easily accumulated in the outer tube 2, and the dust is possibly sucked into the central tube 1 due to the suction force in the central tube 1.

In the embodiment, the dust collecting groove 221 is formed in the inner wall of the outer tube 2, so that dust remaining in the outer tube enters the dust collecting groove 221 and is collected in the dust collecting groove 221, and the dust is prevented from floating freely under the action of airflow.

Further, as shown in fig. 8, the wall of the dust collecting groove 221 on the side close to the center pipe 1 is higher than the wall of the dust collecting groove 221 on the side away from the center pipe 1.

The wall of the dust collecting groove 221 facing the center tube 1 is higher, so that the dust in the dust collecting groove 221 can be effectively stopped, and the dust can be prevented from reversely flowing into the center tube 1, and the wall of the dust collecting groove 221 facing away from the center tube 1 is lower, so that the dust in the dust collecting groove 221 can conveniently leave the dust collecting groove 221 through the side and can be discharged from one end of the outer tube 2.

As a preferred embodiment of the present invention, as shown in fig. 9, the swirl vanes 13 are provided with positioning portions 133, the inner wall of the outer tube 2 is provided with engaging portions 211, and the positioning portions 133 and the engaging portions 211 are engaged to restrict the movement of the central tube 1 relative to the outer tube 2.

After the positioning part 133 is matched with the matching part 211, the central tube 1 and the outer tube 2 are fixed and do not move relatively, so that the position stability of the central tube 1 and the outer tube 2 is improved, and the problems that the central tube 1 moves relatively to the outer tube 2 under the pushing of air flow, so that the flow path of the air flow in the separator is increased, the resistance is increased, or the central tube 1 is separated from the outer tube 2 are solved.

In one embodiment, as shown in fig. 9, the positioning portion 133 is a positioning protrusion, the matching portion 211 is a positioning groove, and after the central tube 1 is installed, the positioning protrusion extends into the positioning groove, and the central tube is fixed by the stopping action of the groove wall of the positioning groove.

Of course, the positioning portion 133 may also be a groove structure, and the matching portion 211 is a protrusion structure accordingly. Or the positioning portion 133 and the matching portion 211 are matched and positioned in other manners, which is not limited in this respect.

The utility model also discloses an air filter, including the casing, still include foretell cyclone, air filter still includes the second grade filtering component, the second grade filtering component intercommunication the center tube. Air cleaner utilizes the aforesaid cyclone plays the air prefilter effect, and the air admission in the separator, great granule warp such as dust, impurity in the air separator whirl and clean air separation, clean air warp center tube 1 flows extremely in air cleaner's the second grade filter assembly, further purifies. And the inner wall of the central tube 1 is provided with the flow guide inclined plane 122, so that the resistance of the clean gas during counter flow is reduced, the on-way loss is reduced, the separation of the clean gas and dust is facilitated, and the flow efficiency of the clean gas is improved.

The utility model can be realized by adopting or using the prior art for reference in places which are not mentioned in the specification.

The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments.

The above description is only an example of the present invention and is not intended to limit the present invention. Various modifications and variations of the present invention will be apparent to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A cyclone separator comprises a central tube and an outer tube, and is characterized in that,

the center tube includes whirl portion and backward flow portion, whirl portion stretches into the inside of outer tube, just the outer wall of whirl portion and air inlet gap has between the inner wall of outer tube, the periphery of whirl portion is provided with swirl blade, the end of whirl portion with swirl blade's terminal parallel and level, just swirl blade with whirl portion is integrated into one piece's structure, the inner wall of center tube is provided with the water conservancy diversion inclined plane.

2. Cyclonic fluid separator as claimed in claim 1,

3. Cyclonic fluid separator as claimed in claim 2,

4. Cyclonic fluid separator as claimed in claim 1,

the inner part of the central tube is provided with a return channel, and partial area of the swirling part is suddenly contracted towards the return channel so as to form the diversion inclined plane on the inner wall of the swirling part.

5. Cyclonic fluid separator as claimed in claim 1,

6. Cyclonic fluid separator as claimed in claim 5,

7. Cyclonic fluid separator as claimed in claim 5,

8. Cyclonic fluid separator as claimed in claim 7,

9. Cyclonic fluid separator as claimed in claim 1,

10. An air filtering device, which comprises a shell and is characterized in that,

the cyclonic separator of any one of claims 1-9, the air cleaner assembly further comprising a secondary filter assembly, the secondary filter assembly being in communication with the central tube.