Rotational flow pipe type air prefilter

Abstract

The utility model discloses a rotational flow tube type air prefilter, belongs to the technical field of air prefilters, and solves the problems of high cost and short service life of the existing fan blade type prefilter. The device comprises an air inlet cavity and an air outlet cavity, a plurality of rotational flow pipes are arranged in the air inlet cavity, the air inlet cavity is communicated with the air outlet cavity through the rotational flow pipes so that fluid containing impurities in the air inlet cavity can enter the air outlet cavity after being separated by the rotational flow pipes, and the rotational flow pipes are symmetrically arranged relative to the X-axis direction and the Y-axis direction at the same time. According to the cyclone tube type air prefilter, the production cost can be effectively reduced, the service life is prolonged, and the impurity separation effect is improved.

Description

Technical Field

[0001] The utility model relates to an air prefilter, and more specifically to a cyclone tube type air prefilter. Background Art

[0002] The air pre-filter can reduce the amount of dust and impurities entering the intake system, thereby keeping the air filter clean and making the engine run more powerful. Its working principle is to filter dust through centrifugal force. The patent number is: CN202221996266.2, which discloses a universal air pre-filter, which belongs to the field of air pre-filters, and solves the problem that it is difficult for existing air pre-filters to select and install air intake grids of different specifications according to different engine requirements, and the versatility is poor. It includes a rain cap, a fixed fan blade and an air intake grid, the air intake grid is clamped between the rain cap and the fixed fan blade, and a first positioning structure for positioning the air intake grid is provided between the rain cap and the fixed fan blade, and a second positioning structure for positioning the air intake grid is provided between the rain cap and the fixed fan blade outside the first positioning structure. The universal air pre-filter of the utility model can install air intake grids of different specifications according to different working conditions to ensure smooth air intake.

[0003] In the above-mentioned existing air pre-filter, impurities are separated from the air by fixed blades, and a rotatable air guide bowl is arranged inside the fixed blade to guide the air to the edge of the chassis. Since the air guide bowl is rotatable, in order to prevent the rotation from being affected, a relatively complex dust-proof structure is usually required, which is not only difficult to design and costly, but also the air pre-filter is easily damaged and has a relatively short service life.

[0004] Therefore, it is urgent to design a cyclone tube type air pre-filter to solve the above-mentioned technical problems. Utility Model Content

[0005] 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 cyclone tube type air pre-filter which can effectively reduce production costs, extend service life, and improve impurity separation effects.

[0006] The technical solution of the utility model is as follows: a cyclone tube type air pre-filter, comprising an air intake chamber and an air exhaust chamber, wherein a plurality of cyclone tubes are arranged in the air intake chamber, and the air intake chamber is connected with the air exhaust chamber through the plurality of cyclone tubes so that the fluid containing impurities in the air intake chamber is separated by the cyclone tubes before entering the air exhaust chamber, and the plurality of cyclone tubes are symmetrically arranged relative to the X-axis and the Y-axis directions.

[0007] As a further improvement, the plurality of swirl tubes are divided into inner swirl tubes and outer swirl tubes around the center of the exhaust chamber, and the number of swirl tubes corresponding to the outer swirl tubes is greater than the number of swirl tubes corresponding to the inner swirl tubes.

[0008] Furthermore, the cyclone tubes corresponding to the inner cyclone tubes are divided into six groups, and the angle between any two adjacent groups of cyclone tubes corresponding to the inner cyclone tubes is smaller than the angle between any two adjacent cyclone tubes in each group of cyclone tubes.

[0009] Furthermore, the cyclone tubes corresponding to the outer cyclone tubes are divided into four groups, and the angle between any two adjacent groups of cyclone tubes corresponding to the outer cyclone tubes is greater than the angle between any two adjacent cyclone tubes in each group of cyclone tubes.

[0010] Furthermore, it also includes an outer shell, an upper cover and an exhaust pipe, the exhaust pipe is inserted into the outer shell, the upper cover is installed on the top of the outer shell, a transition cavity is formed between the upper cover and the outer shell to connect the swirl tube with the exhaust cavity, the inner cavity of the exhaust pipe constitutes the exhaust cavity, the cavity between the exhaust pipe and the outer shell constitutes the air intake cavity, and the outer shell is provided with an air intake grille connected to the air intake cavity.

[0011] Furthermore, an upper support plate and a lower support plate are respectively provided at the top and the bottom of the shell, the vortex tube is detachably installed between the upper support plate and the lower support plate, and the upper support plate and the lower support plate are connected by at least two pull rods.

[0012] Furthermore, the lower support plate is provided with a plurality of radially extending grooves, and the bottom of each of the grooves is flush with the top surface of the lower support plate.

[0013] Furthermore, it also includes a dust exhaust chamber, which is located below the lower support plate and is connected to the air inlet chamber through a plurality of cyclone tubes.

[0014] Furthermore, positioning grooves are provided on both sides of the upper support plate and the lower support plate, the outer shell is inserted into the corresponding positioning grooves of the upper support plate and the lower support plate, the upper cover is inserted into the corresponding positioning groove of the upper support plate, and the positioning groove corresponding to the bottom of the lower support plate is inserted with a dust box, and the inner cavity of the dust box constitutes a dust exhaust cavity, and the upper cover and the upper support plate, the exhaust pipe and the upper support plate, the exhaust pipe and the lower support plate, and the dust box and the lower support plate are all connected by axially arranged fastening screws.

[0015] Furthermore, at least one dust exhaust port is provided at the bottom of the dust box, and the dust exhaust port is extended in the horizontal direction. A cover plate that can cover the dust exhaust port is hinged at the bottom of the dust box, and one end of the cover plate away from the hinge is connected to the dust box through a buckle.

[0016] Beneficial Effects

[0017] Compared with the prior art, the utility model has the following advantages:

[0018] 1. The cyclone tube type air pre-filter of the utility model arranges a plurality of cyclone tubes in the air inlet cavity. The impurity-containing fluid to be processed first enters the air inlet cavity and then enters the cyclone tube. When passing through the cyclone sheets in the cyclone tube, a spiral motion occurs to realize cyclone separation of impurities. The separated gas flows upward and enters the exhaust cavity, thereby providing clean air for the engine, and the separated impurities are discharged through the bottom of the cyclone tube. The cyclone tube separation method is used, and there is no need to arrange fixed fan blades and air guide bowls with complex structures, which can effectively reduce production costs and extend service life. In addition, the arrangement of a plurality of cyclone tubes increases the area of ​​cyclone separation, further improving the impurity separation effect.

[0019] 2. The swirl tube type air pre-filter of the utility model can effectively utilize the area of ​​the pre-filter by further optimizing the distribution of multiple swirl tubes into a symmetrical structure, and a grouped symmetrical structure, especially for non-circular pre-filters, more swirl tubes can be arranged. In the pre-filter of the same area, the more swirl tubes there are, the lower the intake resistance is, which further improves the intake stability and the impurity separation effect; and the grouped symmetrical arrangement of the swirl tubes can free up installation space for the pull rod between the upper support plate and the lower support plate, and maintain an effective distance between the pull rod and the swirl tube, which is convenient for the installation of the pull rod, while improving the structural strength of the pre-filter and further extending its service life.

[0020] 3. The cyclone tube air pre-filter of the utility model is provided with a dust exhaust chamber at the bottom of the pre-filter for collecting separated impurities. When the impurities need to be cleaned, the cover plate is opened, and the impurities are automatically discharged from the dust exhaust port under the action of their own gravity. They can also be cleaned manually through the dust exhaust port, and disassembly and maintenance are very convenient. The outer shell, upper cover, dust box, exhaust pipe of the pre-filter are all detachably connected to the upper support plate and the lower support plate, which further improves the convenience of disassembly and maintenance. The axially arranged fastening screws are used for fastening. Compared with the existing radial screw fastening, the threaded connection length between the screws and the components can be increased, which can further improve the connection reliability and thus extend its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the utility model after removing the outer shell;

[0023] Figure 3 for Figure 2 A magnified schematic diagram of the structure at K in the middle;

[0024] Figure 4 This is a schematic diagram of the structure of the utility model when viewed from above;

[0025] Figure 5 for Figure 4 Schematic diagram of the cross-sectional structure of AA;

[0026] Figure 6 for Figure 5 A schematic diagram of the structure enlarged at position I in the middle;

[0027] Figure 7 for Figure 4 Schematic diagram of the cross-sectional structure of the middle BB;

[0028] Figure 8 It is a schematic diagram of the layout of the swirl tube in the utility model.

[0029] Among them: 1-intake cavity, 2-exhaust cavity, 3-swirl tube, 4-housing, 5-upper cover, 6-exhaust pipe, 7-transition cavity, 8-intake grille, 9-upper support plate, 10-lower support plate, 11-pull rod, 12-sinking groove, 13-dust exhaust cavity, 14-positioning groove, 15-dust box, 16-fastening screw, 17-dust exhaust port, 18-cover plate, 19-buckle. DETAILED DESCRIPTION

[0030] The present invention will be further described below with reference to the specific embodiments in the accompanying drawings.

[0031] See also Figure 1-8 The utility model discloses a cyclone tube type air pre-filter, comprising an air intake chamber 1 and an air exhaust chamber 2, wherein the air intake chamber 1 and the air exhaust chamber 2 are both closed chambers, the air intake chamber 1 is communicated with the outside, and the air exhaust chamber 2 is communicated with the air intake pipe of the engine, a plurality of cyclone tubes 3 are arranged in the air intake chamber 1, and the plurality of cyclone tubes 3 are arranged vertically, and the air intake chamber 1 is communicated with the air exhaust chamber 2 through the plurality of cyclone tubes 3 so that the impurity-containing fluid in the air intake chamber 1 is separated by the cyclone tubes 3 and then enters the air exhaust chamber 2. Specifically, each swirl tube 3 includes an upper tube section, a lower tube section and a swirl sheet which are arranged in a split manner, wherein the upper tube is connected to the upper support plate 9, the lower tube section is connected to the lower support plate 10, the upper tube section is inserted into the lower tube section, and the swirl sheet is installed between the upper tube section and the lower tube section. The swirl sheet is a spirally arranged structure. Air enters from the gap between the upper tube section and the lower tube section, passes through the spirally arranged swirl sheet 5, and the dust is separated and falls into the dust exhaust chamber 13, while the airflow goes upward and enters the exhaust chamber 2 through the upper tube section.

[0032] The swirl tube type air pre-filter of the utility model is provided with a plurality of swirl tubes 3 in the air inlet chamber 1. The impurity-containing fluid to be processed first enters the air inlet chamber 1 and then enters the swirl tube 3. When passing through the swirl sheets in the swirl tube 3, a spiral motion occurs, thereby realizing swirl separation of impurities. The separated gas flows upward and enters the exhaust chamber 2, thereby providing clean air for the engine, and the separated impurities are discharged through the bottom of the swirl tube. The swirl tube separation method is utilized, and there is no need to arrange fixed fan blades and air guide bowls with complex structures, so the production cost can be effectively reduced and the service life can be extended. In addition, the provision of a plurality of swirl tubes 3 increases the area of ​​swirl separation, thereby further improving the impurity separation effect.

[0033] Preferably, Figure 8 As shown, the pre-filter is a non-circular structure. Specifically, the top projection of the pre-filter is a non-circular shape formed by connecting four arc lines, and the curvatures of two adjacent arc lines are different. The two opposite arc lines are symmetrically arranged. The pre-filter of this shape is suitable for installation in various vehicle models under the premise of ensuring that the pre-filter area is large enough. In the utility model, multiple swirl tubes 3 are symmetrically arranged relative to the X-axis and Y-axis directions at the same time, that is, multiple swirl tubes 3 are symmetrically arranged in the horizontal and vertical directions, which can better match the use of the above-mentioned non-circular structure pre-filter. Further, multiple swirl tubes 3 are divided into inner swirl tubes f and outer swirl tubes e around the center of the exhaust chamber 2. The inner swirl tube f and the outer swirl tube e have only one layer. According to the area of ​​the pre-filter, the diameter of the swirl tube 3 can be enlarged to meet the use requirements. The number of swirl tubes 3 corresponding to the outer swirl tube e is greater than the number of swirl tubes 3 corresponding to the inner swirl tube f. Specifically, the cyclone tubes 3 corresponding to the inner cyclone tubes f are divided into six groups, and the angle between any two adjacent groups of cyclone tubes 3 corresponding to the inner cyclone tubes f is smaller than the angle between any two adjacent cyclone tubes 3 in each group of cyclone tubes 3, that is, Figure 8 The swirl tubes 3 corresponding to the outer swirl tubes e are divided into four groups, and the angle between any two adjacent groups of swirl tubes 3 corresponding to the outer swirl tubes e is greater than the angle between any two adjacent swirl tubes 3 in each group of swirl tubes 3, that is, Figure 8 , the angle c is greater than the angle d.

[0034] The swirl tube type air pre-filter of the present embodiment can effectively utilize the area of ​​the pre-filter by further optimizing the distribution of the plurality of swirl tubes 3 into a symmetrical structure, and a group-symmetrical structure, especially for a non-circular pre-filter, more swirl tubes can be arranged. In the pre-filter of the same area, the more swirl tubes 3 there are, the lower the intake resistance is, which further improves the intake stability and the impurity separation effect. Moreover, the group-symmetrical arrangement of the swirl tubes can free up installation space for the pull rod 11 between the upper support plate 9 and the lower support plate 10, and an effective spacing is maintained between the pull rod 11 and the swirl tube 3, which facilitates the installation of the pull rod 11, while improving the structural strength of the pre-filter and further extending its service life.

[0035] Preferably, the pre-filter also includes an outer shell 4, an upper cover 5 and an exhaust pipe 6, wherein the exhaust pipe 6 is inserted into the outer shell 4, the upper cover 5 is installed on the top of the outer shell 4, and a transition chamber 7 is formed between the upper cover 5 and the outer shell 4 to connect the cyclone tube 3 with the exhaust chamber 2. The gas separated by the cyclone tube 3 first enters the transition chamber 7 and then enters the exhaust chamber 2. The inner cavity of the exhaust pipe 6 constitutes the exhaust chamber 2, and the cavity between the exhaust pipe 6 and the outer shell 4 constitutes the air intake chamber 1. The outer shell 4 is provided with an air intake grille 8 connected to the air intake chamber 1 to meet the air intake demand and at the same time block large-area impurities such as leaves.

[0036] Preferably, an upper support plate 9 and a lower support plate 10 are respectively provided at the top and the bottom of the housing 4, and the swirl tube 3 is detachably installed between the upper support plate 9 and the lower support plate 10. Specifically, the two ends of the swirl tube 3 are respectively plugged into the upper support plate 9 and the lower support plate 10, and the upper pipe section and the lower pipe section of the swirl tube 3 are respectively provided with limit plates, and the limit plates and the two support plates are formed between the limit plates, and the upper support plate 9 and the lower support plate 10 are connected by at least two tie rods 11. The tie rod 11 can be a stud. During installation, the upper pipe section of each swirl tube 3 is plugged into the lower pipe section one by one, and then the tie rod 11 is used to pass through the two support plates, and the nuts are screwed on the corresponding tie rods 11 on the outer sides of the support plates on both sides, so that the swirl tube 3 can be installed.

[0037] Preferably, a plurality of radially extending grooves 12 are provided on the lower support plate 10, and the bottom of each groove 12 is flush with the top surface of the lower support plate 10. During maintenance, the pull 11 can be loosened, the outer shell 4 can be taken out, and then the impurities accumulated on the lower support plate 10 can be swept out of the groove 12 with a broom, which makes cleaning and maintenance very convenient.

[0038] Preferably, the pre-filter further comprises a dust exhaust chamber 13, which is located below the lower support plate 10 and is used to receive the separated impurities, and the dust exhaust chamber 13 is connected to the air inlet chamber 1 through a plurality of cyclone tubes 3. Further, preferably, positioning grooves 14 are provided on both sides of the upper support plate 9 and the lower support plate 10, wherein the housing 4 is inserted into the positioning grooves 14 corresponding to the upper support plate 9 and the lower support plate 10, the upper cover 5 is inserted into the positioning grooves 14 corresponding to the upper support plate 9, and the positioning grooves 14 corresponding to the bottom of the lower support plate 10 are inserted with a dust collecting box 15, the inner cavity of the dust collecting box 15 constitutes the dust exhaust chamber 13, and the upper cover 5 and the upper support plate 9, the exhaust pipe 6 and the upper support plate 9, the exhaust pipe 6 and the lower support plate 10, and the dust collecting box 15 and the lower support plate 10 are all connected by axially arranged fastening screws 16. Furthermore, at least one dust exhaust port 17 is provided at the bottom of the dust box 15 to facilitate the discharge of impurities. The dust exhaust port 17 is extended in the horizontal direction. The horizontally arranged dust exhaust port can effectively increase the volume of the dust exhaust chamber 13 relative to the inclined structure. The bottom of the dust box 15 is also hinged with a cover plate 18 that can cover the dust exhaust port 17. The end of the cover plate 18 away from the hinge is connected to the dust box 15 by a buckle 19, which is convenient for disassembly and assembly to clean impurities.

[0039] The cyclone tube air pre-filter of the present embodiment is provided with a dust exhaust chamber 13 at the bottom of the pre-filter for collecting separated impurities. When the impurities need to be cleaned, the cover plate is opened, and the impurities are automatically discharged from the dust exhaust port 17 under the action of their own gravity. They can also be cleaned manually through the dust exhaust port 17, and disassembly and maintenance are very convenient; and the outer shell 4, upper cover 5, dust box 15, exhaust pipe 6 of the pre-filter are all detachably connected to the upper support plate 9 and the lower support plate 10, which further improves the convenience of disassembly and maintenance, and the axially arranged fastening screws 16 are used for fastening. Compared with the existing radial screw fastening, it can increase the threaded connection length between the screw and the component, which can further improve the connection reliability, thereby extending its service life.

[0040] 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 cyclone tube type air pre-filter, comprising an air inlet chamber (1) and an air outlet chamber (2), characterized in that: A plurality of cyclone tubes (3) are arranged in the air intake chamber (1), and the air intake chamber (1) is connected to the air exhaust chamber (2) through the plurality of cyclone tubes (3) so that the fluid containing impurities in the air intake chamber (1) is separated by the cyclone tubes (3) and then enters the air exhaust chamber (2), and the plurality of cyclone tubes (3) are symmetrically arranged relative to the X-axis and Y-axis directions.

2. A cyclone tube type air pre-filter according to claim 1, characterized in that: The plurality of swirl tubes (3) are divided into an inner swirl tube (f) and an outer swirl tube (e) around the center of the exhaust chamber (2), and the number of swirl tubes (3) corresponding to the outer swirl tube (e) is greater than the number of swirl tubes (3) corresponding to the inner swirl tube (f).

3. A cyclone tube type air pre-filter according to claim 2, characterized in that: The cyclone tubes (3) corresponding to the inner cyclone tubes (f) are divided into six groups, and the angle between any two adjacent groups of cyclone tubes (3) corresponding to the inner cyclone tubes (f) is smaller than the angle between any two adjacent cyclone tubes (3) in each group of cyclone tubes (3).

4. A cyclone tube type air pre-filter according to claim 2, characterized in that: The cyclone tubes (3) corresponding to the outer cyclone tubes (e) are divided into four groups, and the angle between any two adjacent groups of cyclone tubes (3) corresponding to the outer cyclone tubes (e) is greater than the angle between any two adjacent cyclone tubes (3) in each group of cyclone tubes (3).

5. A cyclone tube type air pre-filter according to any one of claims 1 to 4, characterized in that: The invention also comprises an outer shell (4), an upper cover (5) and an exhaust pipe (6), wherein the exhaust pipe (6) is inserted into the outer shell (4), the upper cover (5) is installed on the top of the outer shell (4), a transition chamber (7) is formed between the upper cover (5) and the outer shell (4) to connect the swirl tube (3) with the exhaust chamber (2), the inner chamber of the exhaust pipe (6) constitutes the exhaust chamber (2), the cavity between the exhaust pipe (6) and the outer shell (4) constitutes the air intake chamber (1), and the outer shell (4) is provided with an air intake grille (8) connected with the air intake chamber (1).

6. A cyclone tube type air pre-filter according to claim 5, characterized in that: The top and bottom of the shell (4) are respectively provided with an upper support plate (9) and a lower support plate (10); the vortex tube (3) is detachably installed between the upper support plate (9) and the lower support plate (10); and the upper support plate (9) and the lower support plate (10) are connected by at least two pull rods (11).

7. A cyclone tube type air pre-filter according to claim 6, characterized in that: The lower support plate (10) is provided with a plurality of radially extending grooves (12), and the bottom of each groove (12) is flush with the top surface of the lower support plate (10).

8. The cyclone tube type air pre-filter according to claim 6, characterized in that: It also comprises a dust exhaust chamber (13), wherein the dust exhaust chamber (13) is located below the lower support plate (10), and the dust exhaust chamber (13) is connected to the air inlet chamber (1) via a plurality of cyclone tubes (3).

9. A cyclone tube type air pre-filter according to claim 8, characterized in that: Both sides of the upper support plate (9) and the lower support plate (10) are provided with positioning grooves (14); the shell (4) is inserted into the corresponding positioning grooves (14) of the upper support plate (9) and the lower support plate (10); the upper cover (5) is inserted into the corresponding positioning grooves (14) of the upper support plate (9); the positioning groove (14) corresponding to the bottom of the lower support plate (10) is inserted with a dust collecting box (15); the inner cavity of the dust collecting box (15) constitutes a dust exhaust cavity (13); the upper cover (5) and the upper support plate (9), the exhaust pipe (6) and the upper support plate (9), the exhaust pipe (6) and the lower support plate (10), and the dust collecting box (15) and the lower support plate (10) are all connected by axially arranged fastening screws (16).

10. A cyclone tube type air pre-filter according to claim 9, characterized in that: The bottom of the dust box (15) is provided with at least one dust discharge port (17), the dust discharge port (17) is extended in the horizontal direction, and the bottom of the dust box (15) is also hinged with a cover plate (18) that can cover the dust discharge port (17), and the end of the cover plate (18) away from the hinge is connected to the dust box (15) through a buckle (19).

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