Novel tangential rotational flow air filter

Abstract

The utility model discloses a novel tangential rotational flow air filter, belongs to the field of air filters, and solves the problems of high manufacturing difficulty and high cost of the conventional large-flow air filter. The filter comprises a shell and an air inlet pipe, the air inlet pipe is tangentially connected with the periphery of the shell, a rough filtering structure and a fine filtering structure are arranged in the shell, the rough filtering structure comprises a rotational flow piece and an inner flow blocking ring, and a rotational flow cavity communicated with the air inlet pipe is formed among the rotational flow piece, the inner wall of the shell and the inner flow blocking ring. The spinning disk is an independently-formed modular spiral sheet, and the spinning disk is installed on the shell or / and the inner flow blocking ring. According to the tangential rotational flow air filter, the rough filtration efficiency is improved, meanwhile, the tangential rotational flow air filter can be conveniently manufactured, and the manufacturing difficulty and cost are effectively reduced.

Description

Technical Field

[0001] The utility model relates to an air filter, and more specifically, to a novel tangential swirl air filter. Background Art

[0002] Air filter is used to filter impurities in the air. Impurities are divided into coarse particles and fine particles. Correspondingly, air filter is usually designed with coarse filtration and fine filtration structure. The coarse filtration of traditional air filter is mostly completed by blade ring structure, that is, many oblique blades are evenly distributed on the circumference to guide the flow.

[0003] Patent No.: CN209917548U discloses a pre-tangential swirl air filter, comprising a shell, an air inlet pipe arranged at the air inlet end of the shell, and an air outlet pipe arranged at the exhaust end of the shell, the air inlet pipe is tangentially connected to the outer periphery of the shell, and a coarse filter structure for purifying the air and a fine filter mechanism for secondary purification of the air are arranged inside the shell. The utility model has a simple structure, is stable and reliable, is easy to disassemble and assemble, and is convenient to use. It adopts a tangential air inlet structure, so that the airflow starts to rotate as soon as it enters, which prolongs the formation of centrifugal force, has large centrifugal force and high coarse filtration efficiency, can effectively filter coarse and fine particles in air impurities in layers, improves the filtering effect, can well guide the air flow, so that the air passes through the filter element quickly, reduces air resistance, improves the filtering efficiency, can collect dust, and avoid dust backflow, so this kind of pre-tangential swirl air filter has a broad application market.

[0004] The above-mentioned existing tangential swirl air filter has a rotor blade corresponding to the swirl chamber that is integrally formed on the housing, which is usually only suitable for small-flow plastic parts. For large-flow air filters, since the mold of the housing plastic part is too high, the housing can generally only be made of iron parts, which makes it difficult to form the rotor blade integrally with the housing, resulting in high manufacturing difficulty and high cost.

[0005] Therefore, it is urgent to design a novel tangential swirl air filter to solve the above-mentioned technical problems. Utility Model Content

[0006] The technical problem to be solved by the utility model is to address the above-mentioned deficiencies in the prior art, and one of its purposes is to provide a new type of tangential swirl air filter that can be easily manufactured while meeting the requirement of improving the coarse filtration efficiency, thereby effectively reducing the manufacturing difficulty and cost.

[0007] The technical solution of the utility model is as follows: a new type of tangential swirl air filter, including a shell and an intake pipe, the intake pipe is tangentially connected to the outer periphery of the shell, a coarse filter structure and a fine filter structure are arranged in the shell, the coarse filter structure includes a swirl plate and an inner baffle ring, a swirl chamber connected to the intake pipe is formed between the swirl plate and the inner wall of the shell and the inner baffle ring, the swirl plate is an independently formed modular spiral plate, and the swirl plate is installed on the shell and / or the inner baffle ring.

[0008] As a further improvement, the swirl blade and the inner baffle ring are detachably connected.

[0009] Furthermore, the inner baffle ring includes a baffle ring and a front cover, the baffle ring is coaxially arranged at the bottom of the front cover, the swirl plate is detachably connected to the front cover, and the two sides of the swirl plate are respectively attached to the inner wall of the shell and the outer wall of the baffle ring.

[0010] Furthermore, a connecting piece is provided at one end of the swirl sheet, and the connecting piece is connected to the front cover by screws or rivets.

[0011] Furthermore, the connecting piece is provided with a plurality of vertically arranged fixing brackets, and the screws or rivets are connected to the fixing brackets.

[0012] Furthermore, an arc-shaped piece is provided between the other end of the swirl piece and the connecting piece to connect the two, and the outer wall of the arc-shaped piece is flush with the inner wall of the air inlet pipe.

[0013] Furthermore, a bonding sheet is provided on one side of the connecting sheet, the swirl sheet and the arc-shaped sheet close to the inner baffle ring, and the cross-sectional width of the bonding sheet is greater than the cross-sectional width of the connecting sheet, the swirl sheet and the arc-shaped sheet.

[0014] Furthermore, a plurality of reinforcing ribs are arranged crosswise in the transverse and longitudinal directions between the connecting pieces, the swirl pieces and the arc-shaped pieces.

[0015] Furthermore, the air filter also includes a rear cover, a dust accumulation ring is provided on the rear cover, a dust exhaust valve connected to the dust accumulation ring is provided on the rear cover, and the rear cover is detachably connected to the shell.

[0016] Furthermore, the shell and the front cover are connected by screws or rivets, a positioning sleeve is provided at the bottom of the shell, the positioning sleeve is movably plugged into the dust accumulation ring, and the positioning sleeve and the rear cover are connected by a plurality of buckles.

[0017] Beneficial Effects

[0018] Compared with the prior art, the utility model has the following advantages:

[0019] The tangential swirl air filter of the utility model can be formed separately during production by setting the swirl plates as independent components. When the air filter is assembled, the swirl plates can be assembled separately on the shell. While satisfying the requirement of improving the coarse filtration efficiency, the modular form of the swirl plates can be conveniently manufactured, effectively reducing the manufacturing difficulty and cost. It is not only applicable to small-flow air filters, but also to large-flow air filters, and has a wider range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of one side of the utility model;

[0021] Figure 2 It is a structural schematic diagram of the other side of the utility model;

[0022] Figure 3 It is a schematic diagram of the structure of the utility model from a top view;

[0023] Figure 4 This is a schematic diagram of the structure of the utility model after removing the shell;

[0024] Figure 5 It is an enlarged schematic diagram of the structure of the swirl sheet, the connecting sheet and the arc sheet in the utility model.

[0025] Among them: 1-intake pipe, 2-swirl plate, 3-inner baffle ring, 4-housing, 5-front cover, 6-connecting plate, 7-screw, 8-fixing bracket, 9-arc-shaped plate, 10-reinforcement rib, 11-rear cover, 12-dust accumulation ring, 13-dust exhaust valve, 14-positioning sleeve, 15-buckle, 16-fine filter structure, 17-rivet, 18-fitting plate, 19-baffle ring. DETAILED DESCRIPTION

[0026] The present invention will be further described below with reference to the specific embodiments in the accompanying drawings.

[0027] See also Figure 1-5The utility model is a novel tangential swirl air filter, comprising a housing 4 and an intake pipe 1, wherein the intake pipe 1 is located at the intake end of the housing 4, and the intake pipe 1 is tangentially connected to the outer periphery of the housing 4 to realize tangential air intake, wherein a coarse filter structure and a fine filter structure 16 are arranged in the housing 4, wherein the coarse filter structure is used for preliminary purification of the air, and the coarse filter structure comprises a swirl sheet 2 and an inner baffle ring 3, wherein the inner baffle ring 3 is arranged between the housing 4 and the outside of the filter element, and between the swirl sheet 2 and the inner wall of the housing 4 and the inner baffle ring 3 A swirl chamber connected to the air intake pipe 1 is formed, and the swirl chamber is arranged in a spiral shape. The swirl plate 2 is an independently formed modular spiral plate, which starts at the tangent point of the top of the outer periphery of the air intake pipe 1, rotates 90 to 270 degrees along the circumference of the shell, and then tilts downward, and is tangent to the outer periphery of the lower part of the air intake pipe 1 again. The swirl plate 2 can be tilted downward as a variable angle curved surface, which can well guide the air flow and reduce the air resistance. The swirl plate 2 is installed on the shell 4 and / or the inner baffle ring 3 to realize the installation of the swirl plate 2. The central axis of the shell is perpendicular to the central axis of the air intake pipe 1, and the projection circle of the air intake pipe 1 is in the shell. The tangential air intake structure is adopted, so that the airflow starts to rotate as soon as it enters, prolongs the formation of the centrifugal force, has a large centrifugal force, and a high coarse filtration efficiency.

[0028] The tangential swirl air filter of the present invention can be formed separately during production by setting the swirl plate 2 as an independent component. When the air filter is assembled, the swirl plate 2 can be assembled separately on the shell. While meeting the requirement of improving the coarse filtration efficiency, the modular form of the swirl plate can be convenient for production, effectively reducing the manufacturing difficulty and cost. It is not only applicable to small-flow air filters, but also to large-flow air filters, and has a wider range of applications.

[0029] Preferably, the swirl plate 2 is detachably connected to the inner baffle ring 3, which makes disassembly and maintenance more convenient. In other embodiments, the swirl plate 2 and the inner baffle ring 3 may also be fixedly connected, such as the swirl plate 2 is fixed to the inner baffle ring 3 by welding, or is glued to the inner baffle ring 3 by glue, or is integrally formed on the inner baffle ring 3. In another embodiment, the swirl plate 2 may also be glued to the shell 4, in this way, after the swirl plate 2 is separately formed, it can also be installed on the shell 4; the swirl plate 2 may also be fixed to the shell 4 by welding. In another embodiment, both sides of the swirl plate 2 may also be connected to the inner baffle ring 3 and the shell 4 at the same time, such as one side of the swirl plate 2 is welded to the shell 4, and the other side of the swirl plate 2 is glued to the inner baffle ring 3.

[0030] Preferably, the inner baffle ring 3 includes a baffle ring 19 and a front cover 5, the baffle ring 19 is coaxially arranged at the bottom of the front cover 5, the swirl plate 2 is detachably connected to the front cover 5 to achieve the installation of the swirl plate 2, and the two sides of the swirl plate 2 are respectively attached to the inner wall of the shell 4 and the outer wall of the baffle ring 19 to form the swirl chamber.

[0031] Preferably, the retaining ring 19 and the front cover 5 can be an integrated structure, which is convenient to manufacture and can improve the structural strength of the inner retaining ring 3. The shell 4 and the front cover 5 are detachably connected. Specifically, the shell 4 and the front cover 5 are connected by screws 7 or rivets 17 to achieve detachable installation.

[0032] Preferably, a connecting piece 6 is provided at one end of the swirl plate 2. The setting of the connecting piece 6 increases the contact area between the swirl plate 2 and the front cover 5, and improves the installation stability of the swirl plate 2. The connecting piece 6 and the front cover 5 are connected by screws 7 or rivets 17, which facilitates the installation of the swirl plate 2. Further, a plurality of vertically arranged fixing brackets 8 are provided on the connecting piece 6, wherein the screws 7 or rivets 17 are connected to the fixing brackets 8. The vertically arranged screws or rivets 17 are used for fastening. Compared with the existing radial fastening, it can increase the connection length between the screws or rivets and the parts, and can further improve the connection reliability, thereby extending its service life. Furthermore, an arc-shaped piece 9 is also provided between the other end of the swirl plate 2 and the connecting piece 6 to connect the two, which plays a role in supporting the swirl plate 2 and can improve the connection stability between the swirl plate 2 and the connecting piece 6. The outer wall of the arc-shaped piece 9 is flush with the inner wall of the intake pipe 4 to form a swirl cavity, avoiding the problem of intake interference.

[0033] Preferably, a bonding sheet 18 is provided on one side of the connecting sheet 6, the swirl sheet 2, and the arc sheet 9 near the inner baffle ring 3, and the cross-sectional width of the bonding sheet 18 is greater than the cross-sectional width of the connecting sheet 6, the swirl sheet 2, and the arc sheet 9, so as to increase the contact area between the connecting sheet 6, the swirl sheet 2, the arc sheet 9 and the inner baffle ring 3, improve the sealing between the connecting sheet 6, the swirl sheet 2, the arc sheet 9 and the inner baffle ring 3, and thus improve the swirl separation effect. Further, a plurality of reinforcing ribs 10 arranged crosswise in the horizontal and longitudinal directions are provided between the connecting sheet 6, the swirl sheet 2, and the arc sheet 9, which further support the swirl sheet 2, improve the connection stability between the connecting sheet 6, the swirl sheet 2, and the arc sheet 9, and ensure the structural strength of the swirl sheet 2. Furthermore, the connecting sheet 6, the swirl sheet 2, the arc sheet 9 and the reinforcing ribs 10 are an integrated structure, which is convenient for manufacturing and can effectively improve the structural strength.

[0034] Preferably, the air filter further comprises a rear cover 11, on which a dust accumulation ring 12 is provided, and a dust exhaust valve 13 connected to the dust accumulation ring 12 is provided on the rear cover 11, and the rear cover 11 is detachably connected to the housing 4, so as to facilitate disassembly and maintenance. Furthermore, the housing 4 and the front cover 5 are connected by screws 7 or rivets 17, and a positioning sleeve 14 is provided at the bottom of the housing 4, and the positioning sleeve 14 is movably plugged into the dust accumulation ring 12 to realize the rapid positioning and installation of the housing 4, and the positioning sleeve 14 is connected to the rear cover 11 by a plurality of buckles 15 to realize the detachable installation of the housing 4.

[0035] Preferably, the fine filtration structure 16 includes a filter element arranged inside the shell for filtering the air, and the filter element includes a main filter element and a safety filter element; wherein, the main filter element includes an outer protective net, filter paper, a central tube, an upper end cover, and a lower end cover, and the filter paper is arranged between the outer protective net and the central tube, and the top and bottom ends of the outer protective net, filter paper, and central tube are respectively connected to the upper end cover and the lower end cover, which can effectively perform layered filtration on coarse and fine particles in air impurities, thereby improving the filtration effect.

[0036] Preferably, an air outlet pipe is also provided at the top center of the front cover 5, and a plurality of reinforcing ribs radiating outward from the center are also provided on the top surface of the front cover 5. The reinforcing ribs extend to the outer wall of the air outlet pipe, which can effectively enhance the structural strength of the front cover 5 and the air outlet pipe, and facilitate the connection of the air outlet pipe with other pipelines.

[0037] The tangential swirl air filter of the utility model, when in use, adopts a tangential air intake structure, so that the airflow enters and begins to rotate along the inner wall of the shell, and at the same time, a swirl plate 2 is provided, so that the airflow is radially rotated for a certain angle and then guided by the inclined surface to form an axial movement. The combination of the two directions is a spiral stroke. Since the starting point is high, the centrifugal force is extended, and the coarse and fine particles in the air impurities can be effectively filtered in layers, and the coarse filtration efficiency is high. At the same time, the air flow can be well guided and the air resistance is reduced. A dust accumulation chamber is provided at the rear cover 11 end of the bottom of the shell. When the impurities reach the dust accumulation chamber, the movement intensity is reduced, so they settle down. The whole process achieves the operation of separating coarse particles and clean air. The above-mentioned coarse filtration structure reduces the air resistance of the air filter, improves the filtration efficiency, can collect dust, avoid dust backflow, reduce the clogging burden of the fine filter element, can effectively protect the filter element, and improve the service life.

[0038] The above is only a preferred embodiment of the present invention. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the present invention, which will not affect the effect of the implementation of the present invention and the practicality of the patent.

Claims

1. A novel tangential swirl air filter, comprising a housing (4) and an intake pipe (1), wherein the intake pipe (1) is tangentially connected to the outer periphery of the housing (4), wherein a coarse filter structure and a fine filter structure (16) are provided in the housing (4), wherein the coarse filter structure comprises a swirl plate (2) and an inner baffle ring (3), wherein a swirl chamber connected to the intake pipe (1) is formed between the swirl plate (2) and the inner wall of the housing (4) and the inner baffle ring (3), wherein the swirl plate (2) and the inner wall of the housing (4) and the inner baffle ring (3), wherein the swirl chamber is connected to the intake pipe (1), wherein: The swirl plate (2) is an independently formed modular spiral plate, and the swirl plate (2) is installed on the housing (4) and / or the inner baffle ring (3).

2. A novel tangential cyclone air filter according to claim 1, characterized in that: The swirl plate (2) and the inner baffle ring (3) are detachably connected.

3. A novel tangential cyclone air filter according to claim 2, characterized in that: The inner baffle ring (3) comprises a baffle ring (19) and a front cover (5); the baffle ring (19) is coaxially arranged at the bottom of the front cover (5); the swirl plate (2) is detachably connected to the front cover (5); and two sides of the swirl plate (2) are respectively attached to the inner wall of the housing (4) and the outer wall of the baffle ring (19).

4. A novel tangential cyclone air filter according to claim 3, characterized in that: A connecting piece (6) is provided at one end of the swirl piece (2), and the connecting piece (6) is connected to the front cover (5) via screws (7) or rivets (17).

5. A novel tangential cyclone air filter according to claim 4, characterized in that: The connecting piece (6) is provided with a plurality of vertically arranged fixing straps (8), and the screws (7) or rivets (17) are connected to the fixing straps (8).

6. A novel tangential cyclone air filter according to claim 4, characterized in that: An arc-shaped piece (9) is provided between the other end of the swirl piece (2) and the connecting piece (6) to connect the two, and the outer wall of the arc-shaped piece (9) is flush with the inner wall of the air inlet pipe (1).

7. A novel tangential cyclone air filter according to claim 6, characterized in that: The connecting piece (6), the swirl piece (2), and the arc-shaped piece (9) are all provided with a bonding piece (18) on one side close to the inner baffle ring (3); the cross-sectional width of the bonding piece (18) is greater than the cross-sectional width of the connecting piece (6), the swirl piece (2), and the arc-shaped piece (9).

8. A novel tangential cyclone air filter according to claim 6, characterized in that: A plurality of reinforcing ribs (10) arranged crosswise in the transverse and longitudinal directions are provided between the connecting pieces (6), the swirl pieces (2) and the arc-shaped pieces (9).

9. A novel tangential cyclone air filter according to any one of claims 3 to 8, characterized in that: The air filter further comprises a rear cover (11), a dust accumulation ring (12) is provided on the rear cover (11), a dust exhaust valve (13) connected to the dust accumulation ring (12) is provided on the rear cover (11), and the rear cover (11) is detachably connected to the housing (4).

10. A novel tangential cyclone air filter according to claim 9, characterized in that: The shell (4) and the front cover (5) are connected by screws (7) or rivets (17); a positioning sleeve (14) is provided at the bottom of the shell (4); the positioning sleeve (14) is movably plugged into the dust accumulation ring (12); and the positioning sleeve (14) and the rear cover (11) are connected by a plurality of buckles (15).

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