Air filter with wind pressure

Abstract

The utility model provides an air filter with wind pressure, which comprises a cylindrical shell, an air inlet is arranged at one end of the shell, and a booster fan for sucking air outside the air inlet into the shell is arranged at the end part of the air inlet end in the shell. A rotational flow guiding piece used for guiding air to rotate and flow around the inner wall of the shell is arranged at the position, located on the air outlet side of the booster fan, in the shell, an air filter is fixedly arranged at the other end in the shell, the air filter is of a cylindrical structure and is arranged in an outer-in and inner-out mode, an air outlet is formed in one end of the air filter, and an air outlet is formed in the other end of the air filter. The air outlet faces the other end of the shell, an air outlet connecting nozzle is arranged at the position, corresponding to the air outlet, of the shell, and the air outlet connecting nozzle is communicated with the air outlet; a gap is reserved between the side wall of the shell and the side wall of the air filter, and a discharging opening used for discharging chippings is formed in the position, corresponding to the gap, of the air outlet end of the shell. The device is simple in structure, low in cost, convenient to maintain and stable in performance.

Description

Technical Field

[0001] The utility model relates to an air filter, in particular to an air filter with self-contained wind pressure. Background Art

[0002] An air filter with the function of separating debris from the air needs to be provided in the intake system of an internal combustion engine. Currently, the air filter has two intake modes: negative pressure suction and boost supply. Authorization publication number CN103826719B, a universal compact air pre-cleaner, an air cleaning method and a disposable air filter cartridge for an air pre-cleaner, discloses an air filter with upper boost intake and middle exhaust. Although it has a good boost separation effect, its air outlet is arranged in the middle of the shell, which makes the structure inside the shell more complicated, the production cost is high and it is not convenient for maintenance. Utility Model Content

[0003] In view of the problems in the prior art, the utility model provides an air filter with its own wind pressure, aiming to simplify the internal structure of the shell, reduce production costs and facilitate maintenance.

[0004] An air filter with its own wind pressure comprises a cylindrical shell, an air inlet is arranged at one end of the shell, a booster fan is arranged at the air inlet end of the shell to suck air outside the air inlet into the shell, a swirl guide is arranged at the air outlet side of the booster fan in the shell for guiding the air to rotate and flow around the inner wall of the shell, and an air filter is fixedly arranged at the other end of the shell. The air filter is a cylindrical structure and is arranged with an outside inlet and an inside outlet. An air outlet is arranged at one end of the air filter, and the air outlet faces the other end of the shell. An air outlet nozzle is arranged at a position corresponding to the air outlet on the shell, and the air outlet nozzle is connected to the air outlet; a gap is left between the side wall of the shell and the side wall of the air filter, and a discharge port for discharging debris is opened at a position corresponding to the gap at the air outlet end of the shell.

[0005] Furthermore, the outer end of the air outlet nozzle is a straight structure or a bent structure.

[0006] Further, the swirl guide includes a conical cap for dispersing the airflow to the inner wall of the shell and annular blades for guiding the airflow to swirl, the inner ring of the annular blades is fixedly connected to the outer circumference of the conical cap, and the outer ring of the annular blades is fixedly connected to the inner wall of the shell.

[0007] Further: an annular sealing groove is provided in the shell at the position outside the air outlet nozzle, and the air outlet end of the air filter is inserted in the annular sealing groove and sealed therewith; a clamping groove for clamping the air filter is formed between the inner circle of the annular blade and the conical cap, and the end of the air filter is inserted in the clamping groove and abuts against the conical cap.

[0008] Further, a reinforcing rib plate is evenly fixedly connected along the outer circumference of the conical cap, the plate surface of the reinforcing rib plate is parallel to the axial direction of the shell, and the end face edge of the air filter abuts against the edge of the reinforcing rib plate.

[0009] Further: the lower end portion and the middle portion of the shell are split structures, the lower end portion of the shell forms a fixed cover, and the fixed cover and the middle portion of the shell are butted together to fix the two together through a buckle; the air filter includes a filter cartridge and end covers and annular seals respectively fixedly connected to both ends of the filter cartridge, the end covers and the annular seals are both made of polyurethane, the end covers are inserted into the card slot and abut against the conical cap, and the annular seals are inserted into the annular sealing groove and sealed therewith.

[0010] Furthermore, the inner ring of the annular seal is interference-fitted with the outer wall of the air outlet nozzle.

[0011] Further, a clamp is fixedly arranged on the outer wall of the shell, and a fixing seat is fixedly arranged on the clamp.

[0012] Further: the boost fan includes a protective mesh cover, a fixing frame, a driving motor and a fan fixedly connected to the driving shaft of the driving motor. The protective mesh cover, the driving motor and the fan are arranged in sequence along the air flow direction. The driving motor corresponds to the middle part of the protective mesh cover and is fixedly connected to the outer circumference of the protective mesh cover through the fixing frame. The outer circumference of the protective mesh cover is detachably fixedly installed at the port of the shell.

[0013] Further: a rain cover is fixedly connected to the side of the protective mesh cover away from the drive motor, the rain cover is a circular structure and its diameter is larger than the diameter of the air inlet port of the shell, and a spoiler is fixedly arranged inside the rain cover at a position on the outer edge of the rain cover, and the plate surface of the spoiler is radially cross-arranged with the rain cover.

[0014] The beneficial effects of the utility model are as follows: the air outlet is arranged on the end face of the shell, so as to simplify the structure of the swirl guide, make the structure inside the shell more compact, thereby reducing the production cost; by clamping the air filter between the swirl guide and the fixed cover, it is convenient to replace the air filter; soft polyurethane structures are arranged at both ends of the filter cartridge in the air filter, so as to facilitate the sealing of the air filter in the shell, thereby improving the stability of the performance of the utility model; the utility model has a simple structure, low cost, easy maintenance and stable performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic structural diagram of the first embodiment of the utility model;

[0016] Figure 2 This is a schematic structural diagram of the second embodiment of the utility model;

[0017] Figure 3 for Figure 2 A magnified view of the structure in area A. DETAILED DESCRIPTION

[0018] The utility model is described in detail below in conjunction with the accompanying drawings. The embodiments of the utility model are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the utility model, and cannot be interpreted as limiting the utility model. The directional terms such as left, middle, right, top, and bottom in the embodiments of the utility model are only relative concepts or are based on the normal use state of the product, and should not be considered as restrictive.

[0019] First embodiment:

[0020] An air filter with its own wind pressure, such as Figure 1 and Figure 2 As shown, it includes a cylindrical shell 2, an air inlet 25 is arranged at one end of the shell 2, a booster fan 1 is arranged at the air inlet end of the shell 2 to suck the air outside the air inlet 25 into the shell 2, a swirl guide 3 for guiding the air to rotate around the inner wall of the shell 2 is arranged at the air outlet side of the booster fan 1 in the shell 2, and an air filter 4 is fixedly arranged at the other end of the shell 2. The air filter 4 is a cylindrical structure and is arranged with an outside inlet and an inside outlet. An air outlet 44 is arranged at one end of the air filter 4, and the air outlet 44 faces the other end of the shell 2. An air outlet nozzle 21 is arranged at a position corresponding to the air outlet 44 on the shell 2, and the air outlet nozzle 21 is connected with the air outlet 44 to facilitate connection with the downstream pipe, such as Figure 1 As shown, the outer end of the air outlet nozzle 21 is a bent structure; a gap is left between the side wall of the shell 2 and the side wall of the air filter 4, and a discharge port 23 for discharging debris is opened at the position of the air outlet end of the shell 2 corresponding to the gap.

[0021] In order to facilitate the air to swirl and simplify the internal structure of the shell 2, the swirl guide 3 includes a conical cap 31 for dispersing the airflow to the inner wall of the shell 2 and an annular blade 33 for guiding the airflow to swirl. The inner ring of the annular blade 33 is fixedly connected to the outer circumference of the conical cap 31, and the outer ring of the annular blade 33 is fixedly connected to the inner wall of the shell 2; wherein the small head end of the conical cap 31 faces the air outlet side of the booster fan 1, and the annular blade 33 is evenly distributed along its circumference with inclined blades, and there is a certain angle between the inclined blade and the axis of the shell 2, thereby guiding the airflow to swirl around the inner wall of the shell 2. In order to facilitate the fixing of the air filter 4 in the shell 2, combined with Figure 3As shown, an annular sealing groove 26 is provided at a position outside the air outlet nozzle 21 in the shell 2, and the air outlet end of the air filter 4 is inserted in the annular sealing groove 26 and sealed therewith; a clamping groove 34 for clamping the air filter 4 is formed between the inner circle of the annular blade 33 and the conical cap 31, and the end of the air filter 4 is inserted in the clamping groove 34 and abuts on the conical cap 31; in order to improve the structural strength of the conical cap 31, a reinforcing rib plate 32 is evenly fixedly connected along its outer circumference inside the conical cap 31, the plate surface of the reinforcing rib plate 32 is parallel to the axial direction of the shell 2, and the end face edge of the air filter 4 abuts on the edge of the reinforcing rib plate 32. In order to assemble and replace the air filter 4, the lower end and the middle of the shell 2 are split structures, and the lower end of the shell 2 forms a fixed cover 22. After the fixed cover 22 and the middle of the shell 2 are butted, the two are fixedly connected by a buckle 24; the air filter 4 includes a filter cartridge 42 and an end cap 41 and an annular seal 43 respectively fixedly connected to the two ends of the filter cartridge. The end cap 41 and the annular seal 43 are both made of polyurethane. The end cap 41 is inserted into the card slot 34 and abuts on the conical cap 31. The annular seal 43 is inserted into the annular seal groove. 26 and sealed therewith; specifically, in order to facilitate the sealing between the annular seal 43 and the annular sealing groove 26, the inner ring of the annular seal 43 is interference fit with the outer wall of the air outlet nozzle 21; an annular convex ring 431 is integrally provided on the annular seal 43 at a position between the annular seal 43 and the bottom surface of the annular sealing groove 26, the annular seal 43 abuts against the bottom surface of the annular sealing groove 26 and squeezes the annular convex ring 431, and the annular convex ring 431 can be squeezed and deformed, so as to facilitate the assembly of the air filter 4 between the swirl guide 3 and the fixed cover 22.

[0022] In order to facilitate the fixed installation of the booster fan 1 in the housing 2, the booster fan 1 includes a protective mesh cover 11, a fixing frame 13, a drive motor 12, and a fan 14 fixedly installed on the drive shaft of the drive motor 12. The protective mesh cover 11, the drive motor 12, and the fan 14 are arranged in sequence along the air flow direction. The drive motor 12 corresponds to the middle part of the protective mesh cover 11 and is fixedly connected to the outer circumference of the protective mesh cover 11 through the fixing frame 13. The outer circumference of the protective mesh cover 11 is detachably fixedly installed at the port of the housing 2; A rain cover 6 is fixedly connected to one side. The rain cover 6 is a circular structure and its diameter is larger than the diameter of the air inlet port of the shell 2. A spoiler 61 is fixedly arranged at a position on the outer edge of the rain cover 6 inside the rain cover 6. The plate surface of the spoiler 61 is arranged to cross the radial direction of the rain cover 6, so that it has a certain spoiling effect on the airflow and prevents rainwater from directly entering the shell 2, that is, the spoiler 61 has a certain blocking effect on rainwater; it is best to arrange the spoiler 61 on the outside of the outer circle of the air inlet port of the shell 2 to prevent water droplets on the spoiler 61 from falling into the shell 2.

[0023] In addition, in order to facilitate the fixed installation of the shell 2 , a clamp 5 is fixedly provided on the outer wall of the shell 2 , and a fixing seat 51 is fixedly provided on the clamp 5 .

[0024] When in use, the shell 2 of the utility model is fixedly installed vertically, and the air outlet nozzle 21 is connected to the air inlet of the internal combustion engine; after starting the drive motor 12, the drive motor 12 drives the fan 14 to rotate, thereby increasing the air pressure outside the air filter 4, and at the same time, the air in the shell 2 is caused to rotate around the inner wall of the shell 2 under the action of the swirl guide 3, and the heavier debris is moved from the air flow to the outside of the air flow, and when the debris reaches the bottom of the shell 2, it is discharged from the discharge port 23; the air passes through the air filter 4 and enters the internal combustion engine from the air outlet nozzle 21.

[0025] Second embodiment:

[0026] To facilitate the connection of the outlet nozzle 21 to pipelines at different positions, such as Figure 2 As shown, the outer end of the air outlet nozzle 21 is a straight structure.

[0027] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. An air filter with its own wind pressure, characterized in that: The invention comprises a cylindrical shell, wherein one end of the shell is provided with an air inlet, and the air inlet end portion of the shell is provided with a booster fan for sucking air outside the air inlet into the shell, and a swirl guide for guiding the air to rotate and flow around the inner wall of the shell is provided at the air outlet side of the booster fan in the shell, and an air filter is fixedly provided at the other end portion of the shell, the air filter is a cylindrical structure and is arranged with an outside-inlet and an inside-outlet, an air outlet is provided at one end of the air filter, and the air outlet faces the other end of the shell, and an air outlet nozzle is provided at a position corresponding to the air outlet on the shell, and the air outlet nozzle is communicated with the air outlet; a gap is left between the side wall of the shell and the side wall of the air filter, and a discharge port for discharging debris is provided at a position corresponding to the gap at the air outlet end of the shell.

2. The air filter with self-contained wind pressure according to claim 1, characterized in that: The outer end of the air outlet nozzle is a straight structure or a bent structure.

3. The air filter with self-contained wind pressure according to claim 1, characterized in that: The swirl guide comprises a conical cap for dispersing the airflow to the inner wall of the shell and an annular blade for guiding the airflow to swirl, the inner ring of the annular blade is fixedly connected to the outer circumference of the conical cap, and the outer ring of the annular blade is fixedly connected to the inner wall of the shell.

4. The air filter with self-contained wind pressure according to claim 3, characterized in that: An annular sealing groove is arranged at a position outside the air outlet nozzle in the shell, and the air outlet end of the air filter is inserted into the annular sealing groove and sealed therewith; a clamping groove for clamping the air filter is formed between the inner circle of the annular blade and the conical cap, and the end of the air filter is inserted into the clamping groove and abuts against the conical cap.

5. The air filter with self-contained wind pressure according to claim 4, characterized in that: A reinforcing rib plate is evenly fixedly connected inside the conical cap along its outer circumference, the plate surface of the reinforcing rib plate is parallel to the axial direction of the shell, and the end surface edge of the air filter abuts against the edge of the reinforcing rib plate.

6. The air filter with self-contained wind pressure according to claim 4, characterized in that: The lower end portion and the middle portion of the shell are split structures, and the lower end portion of the shell forms a fixed cover. After the fixed cover and the middle portion of the shell are butted together, the two are fixedly connected by a buckle; the air filter includes a filter cartridge and end covers and annular seals respectively fixedly connected to the two ends of the filter cartridge, the end covers and the annular seals are both made of polyurethane material, the end covers are inserted into the card slot and abut against the conical cap, and the annular seal is inserted into the annular sealing groove and sealed therewith.

7. The air filter with its own wind pressure according to claim 6, characterized in that: The inner ring of the annular seal is interference-fitted with the outer wall of the air outlet nozzle.

8. The air filter with self-contained wind pressure according to claim 1, characterized in that: A clamp is fixedly arranged on the outer wall of the shell, and a fixing seat is fixedly arranged on the clamp.

9. The air filter with self-contained wind pressure according to claim 1, characterized in that: The boost fan includes a protective mesh cover, a fixing frame, a driving motor and a fan fixedly connected to the driving shaft of the driving motor. The protective mesh cover, the driving motor and the fan are arranged in sequence along the air flow direction. The driving motor corresponds to the middle part of the protective mesh cover and is fixedly connected to the outer circumference of the protective mesh cover through the fixing frame. The outer circumference of the protective mesh cover is detachably fixed at the port of the shell.

10. The air filter with self-contained wind pressure according to claim 9, characterized in that: A rain cover is fixedly connected to the side of the protective mesh cover away from the drive motor. The rain cover is a circular structure and its diameter is larger than the diameter of the air inlet port of the shell. A spoiler is fixedly set inside the rain cover at a position on the outer edge of the rain cover, and the plate surface of the spoiler is radially cross-set with the rain cover.

Images