CN218221690U

CN218221690U - Air prefilter and air filtration system convenient to deashing

Info

Publication number: CN218221690U
Application number: CN202221329929.5U
Authority: CN
Inventors: 侯梦甜; 邵磊; 彭博; 刘璞
Original assignee: Weichai Power Co Ltd
Current assignee: Weichai Power Co Ltd
Priority date: 2022-05-30
Filing date: 2022-05-30
Publication date: 2023-01-06
Anticipated expiration: 2032-05-30

Abstract

The utility model discloses an air prefilter and air filtration system convenient to deashing relates to empty equipment technical field that strains, has solved the problem that current air prefilter is not convenient for clear up the dust, has guaranteed filtration efficiency, and concrete scheme is as follows: the dust collector comprises a shell and a plurality of vertical spiral-flow pipes arranged inside the shell, wherein the shell is composed of a rain-proof cap, a filter screen and a dust collection chamber which are sequentially connected from top to bottom, the bottom of the rain-proof cap is detachably connected with a first fixing plate, the top of the dust collection chamber is detachably connected with a second fixing plate, the spiral-flow pipes are located between the first fixing plate and the second fixing plate, and the filter screen is detachably connected with the rain-proof cap and the dust collection chamber.

Description

Air pre-filter and air filtration system convenient to deashing

Technical Field

The utility model belongs to the technical field of the empty equipment technique of straining and specifically relates to an air prefilter and air filtration system convenient to deashing.

Background

The engine has high requirement on the cleanness of air, and the air sucked by the engine is not only used for combustion, but also used for firing oil to do work by utilizing the high temperature generated when the air is compressed. At present, in order to ensure the cleanliness of air, the air entering an engine can enter a cylinder only after sequentially passing through an air prefilter and a filter element.

The inventor finds that most of the existing air pre-filters are cyclone type pre-filters, the filter screen is not detachable, air inlet resistance is increased when the filter screen is blocked, and sufficient clean air cannot be provided for an engine; in addition, the dust collecting cavity cannot be integrally disassembled, and only can be cleaned by opening the dust exhaust port at the bottom, and the dust exhaust port is small in area, slow in cleaning speed, incomplete and easy to block, so that dust accumulated in the prefilter cannot be effectively cleaned, a cyclone pipe is easy to block, the blockage is increased, the efficiency is reduced, and the maintenance period is shortened.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims at providing an air prefilter and air filtration system convenient to deashing filters the separation as core component with the cyclone tube to adopt detachable filter screen, dust collection chamber, need not to clear up the dust with the whole dismantlement of air prefilter, solved the problem of the dust of being not convenient for clear up of current air prefilter.

In order to achieve the above purpose, the present invention is realized by the following technical solution:

in a first aspect, the embodiment of the utility model provides an air prefilter convenient to deashing, including shell and vertical a plurality of cyclone tubes that set up in shell inside, the shell comprises rain-proof cap, filter screen and the dust collection chamber that from the top down connected gradually, the bottom and the first fixed plate of rain-proof cap can be dismantled and be connected, and the top and the second fixed plate in dust collection chamber can be dismantled and be connected, the cyclone tube is located between first fixed plate and the second fixed plate, the filter screen can be dismantled with rain-proof cap, dust collection chamber and be connected.

As a further implementation manner, the air outlet device further comprises an air outlet connecting pipe, wherein one end of the air outlet connecting pipe extends out of the bottom of the shell, and the other end of the air outlet connecting pipe upwards penetrates through the first fixing plate.

As a further implementation manner, a first folded edge protruding outwards is arranged at the bottom of the rain hat along the circumferential direction of the rain hat, and the diameter of the first folded edge is larger than that of the first fixing plate.

As a further implementation mode, a first groove is formed in the bottom of the first folded edge along the circumferential direction of the first folded edge, a first protrusion is arranged at a position corresponding to the top of the first fixing plate, and the first protrusion is inserted into the first groove.

As a further implementation manner, the filter screen is composed of a first filter screen unit and a second filter screen unit, and the first filter screen unit and the second filter screen unit are both in a semi-arc structure; one end of the first filter screen unit is rotatably connected with the second filter screen unit through a rotating shaft, and the other end of the first filter screen unit is fixedly connected with the second filter screen unit through a fastening bolt.

As a further implementation mode, the dust collection cavity is of a cavity structure with an opening at the upper part, and the cavity of the dust collection cavity is communicated with the bottom of the cyclone tube.

As a further implementation manner, the second fixing plate is provided with a second folding edge which is bent upwards and a third folding edge which is bent downwards, and the inner diameter of the third folding edge is the same as the outer diameter of the top of the dust collection cavity.

As a further implementation manner, the top of the cyclone tube penetrates through the first fixing plate, the bottom of the cyclone tube penetrates through the second fixing plate, the cyclone tube is composed of a central tube, an impeller and an outer tube, the impeller is inserted into the upper end of the outer tube and sleeved at the lower end of the central tube, and the top of the impeller is flush with the top of the outer tube.

As a further implementation mode, second grooves are formed in the side walls of the first fixing plate and the second fixing plate along the circumferential direction of the first fixing plate and the second fixing plate, and second protrusions matched with the second grooves are arranged on the filter screen.

In a second aspect, another embodiment of the present invention provides an air filtration system, including the above-mentioned ash removal facilitating air pre-filter, further including an air filter, the air inlet of the air filter and the air outlet pipe are communicated, and the air outlet of the air filter is communicated with the air inlet pipe of the engine.

Above-mentioned the utility model has the advantages as follows:

1) The utility model discloses carry out the filtration separation with the cyclone tube as core component, and filter screen and dust collecting chamber can carry out the dismouting, can be convenient when the cyclone tube blocks up change the clearance, guaranteed filtration's efficiency.

2) The utility model discloses the bottom of the first hem of rain-proof cap is equipped with first recess along its hoop, and the top relevant position department of first fixed plate is equipped with first arch along its hoop, has increased joint strength and the leakproofness between rain-proof cap and the first fixed plate through the cooperation of first arch and first recess, can effectively avoid the infiltration of rainwater.

3) The bottom of the second fixing plate of the utility model is provided with a third folded edge which is bent downwards, and the second fixing plate can be buckled at the top of the dust collecting cavity, thereby utilizing the third folded edge to shelter from the upper opening side of the dust collecting cavity, and preventing the gliding rainwater from flowing into the dust collecting cavity.

4) The utility model discloses utilize between filter screen and the fixed plate recess and bellied cooperation to be connected, guaranteed the leakproofness when having increased installation intensity, and the first hem of rain-proof cap still shelters from the top of filter screen, has effectively avoided during the rainwater gets into the air prefilter.

Drawings

The accompanying drawings, which form a part of the specification, 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 not to constitute a limitation on the invention.

FIG. 1 is a schematic diagram of the overall structure of an air prefilter for facilitating ash removal according to one or more embodiments of the present invention;

FIG. 2 is a schematic, partially cross-sectional, structural view of an air pre-filter to facilitate ash removal according to one or more embodiments of the present disclosure;

FIG. 3 is a schematic diagram of an air prefilter for facilitating ash removal according to one or more embodiments of the present invention (without a screen);

FIG. 4 is a schematic diagram of a swirl tube according to one or more embodiments of the present disclosure;

in the figure: the mutual spacing or size is exaggerated to show the position of each part, and the schematic diagram is only used for illustration;

wherein, 1, a rotating shaft; 2. a first fastening bolt; 3. filtering with a screen; 4. a dust collection chamber; 5. rain-proof caps; 6. a second fastening bolt; 7. a swirl tube; 8. a first fixing plate; 9. a second fixing plate; 10. an air outlet connecting pipe; 11. a central tube; 12. an impeller; 13. an outer cylinder.

Detailed Description

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

As described in the background art, most of the existing air prefilters are cyclone prefilters, a filter screen is not detachable, and when the filter screen is blocked, air intake resistance is increased, so that sufficient clean air cannot be provided for an engine; in addition, the unable whole dismantlement of dust collecting chamber only can clear up through the dust exhaust mouth of opening the bottom, because the dust exhaust mouth area is little, cleaning speed is slow, thorough and very easily block up for the inside deposition of prefilter can't effectively be cleared up, very easily causes the cyclone tube to block up, and the jam risees, and efficiency descends, makes the problem that the maintenance cycle shortens, for solving above-mentioned problem, the utility model provides an air prefilter and air filtration system convenient to deashing.

Example 1

In a typical embodiment of the present invention, as shown in fig. 1-4, an air prefilter for easy ash removal is provided, which comprises a filter screen 3, a dust collecting chamber 4, a rain-proof cap 5, a cyclone tube 7 and an air outlet pipe 10.

Wherein, filter screen 3, dust collecting chamber 4 and rain-proof cap 5 constitute the shell of air prefilter jointly, and whirl pipe 7 is fixed to be set up in the inside of shell, and the vertical setting of takeover 10 of giving vent to anger, and the one end of takeover 10 of giving vent to anger stretches out from the bottom of shell to make the inside air after filtering of shell discharge through takeover 10 of giving vent to anger.

Rain-proof cap 5 is made by plastics materials such as PVC, PUC, and rain-proof cap 5 is located the top of shell, the isolation of mainly used rainwater to prevent that the rainwater from getting into inside the shell, the bottom of rain-proof cap 5 and the inside fixed plate fixed connection of shell.

Specifically, the bottom of rain-proof cap 5 contacts with first fixed plate 8, and rain-proof cap 5's top is equipped with a plurality of fixing bolt along its hoop interval, through fixing bolt with rain-

proof cap

5 and 8 fixed connection of first fixed plate.

The bottom of rain-proof cap 5 is the annular, and the bottom of rain-proof cap 5 has outside convex first hem along its hoop, and first fixed plate 8 is circular platelike structure, and the diameter of first fixed plate 8 slightly is less than the diameter on first hem, and when carrying out the fixed mounting of first fixed plate 8, the top of first fixed plate 8 can contact with first hem, and the setting up of first hem has increased the area of contact between rain-proof cap 5 and the first fixed plate, has guaranteed the joint strength between the two.

In order to further increase the joint strength of rain-proof cap 5 and first fixed plate 8, the bottom of the first hem of rain-proof cap 5 is equipped with first recess along its hoop, and the top relevant position department of first fixed plate 8 is equipped with first arch along its hoop, and the cooperation through first arch and first recess has increased joint strength and leakproofness between rain-proof cap 5 and the first fixed plate 8, can effectively avoid the infiltration of rainwater.

Filter screen 3 is located rain-proof cap 5's below, sets up in air prefilter's air inlet department, and mainly used carries out the prefilter to the inside air that gets into the shell to prevent that large granule debris from getting into in the shell.

Filter screen 3 is detachable components of a whole that can function independently structure, and is concrete, and filter screen 3 comprises first filter screen unit and second filter screen unit, and first filter screen unit and second filter screen unit are half-circular arc's structure, and first filter screen unit and second filter screen unit dock and form a ring shape filter screen 3.

First filter screen unit and second filter screen unit all adopt the whole mode of moulding plastics or steel filter screen moulding plastics to make, all seted up a plurality of rhombus or circular shape filtration pore on first filter screen unit and the second filter screen unit.

First filter screen unit one end is passed through rotation axis 1 and is connected with the tip rotation of the second filter screen unit of neighbouring, the other end of first filter screen unit passes through first fastening bolt 2 and the tip fixed connection of the second filter screen unit of neighbouring, thereby make filter screen 3 have the ability of dismantling fixedly, if produce the jam condition at filter screen 3's filtration pore under adverse operational environment, through dismantling first fastening bolt 2, it makes its motion of doing relative keeping away from to rotate first filter screen unit and second filter screen unit, thereby realize dismantling of filter screen 3, so that it is clean.

Wherein, first filter screen unit and second filter screen unit utilize 2 fixed connection's of first fastening bolt one end all to have the otic placode, and first filter screen unit sets up with the otic placode of second filter screen unit relatively to the area of contact of first filter screen unit of increase and second filter screen unit has made things convenient for first fastening bolt 2's installation, has guaranteed the joint strength between the filter screen unit.

The dust collection chamber 4 is located below the filter screen 3, the top of the dust collection chamber 4 is in contact with a fixing plate inside the shell, the dust collection chamber 4 is of a cavity structure with an upper opening, a cavity is formed inside the dust collection chamber 4, and the cavity of the dust collection chamber 4 is communicated with the bottom of the spiral-flow pipe 7.

Specifically, the top of the dust collection chamber 4 is in contact with the bottom of the second fixing plate 9, the dust collection chamber 4 is fixedly connected with the second fixing plate 9 through the second fastening bolt 6, the cross section of the dust collection chamber 4 is of a circular ring-shaped structure, a circular through hole is formed in the middle of the dust collection chamber 4, the diameter of the circular through hole is the same as the outer diameter of the air outlet connecting pipe 10, and the air outlet connecting pipe 10 can penetrate through the circular through hole of the dust collection chamber 4 to extend into the shell.

The diameter of the top of the dust collection cavity 4 is smaller than that of the second fixing plate 9, the second fixing plate 9 is provided with a second folded edge which is bent upwards, and the second folded edge is arranged along the annular direction of the second fixing plate 9 to form an accommodating space;

the bottom of the second fixing plate 9 is provided with a third folded edge which is bent downwards, the third folded edge is also arranged along the circumferential direction of the second fixing plate 9, the inner diameter of the third folded edge is the same as the outer diameter of the top of the dust collection chamber 4, and the second fixing plate 9 can be buckled at the top of the dust collection chamber 4, so that the side edge of the upper opening of the dust collection chamber 4 is shielded by the third folded edge to prevent downward rainwater from flowing into the dust collection chamber 4.

A plurality of cyclone tubes 7 are fixedly arranged between the first fixing plate 8 and the second fixing plate 9 and used for filtering air for the second time, the tops of the cyclone tubes 7 are inserted into and penetrate through the first fixing plate 8, the bottoms of the cyclone tubes 7 are inserted into and penetrate through the second fixing plate 9, and annular bosses are arranged on the upper side wall and the lower side wall of each cyclone tube 7 and used for being in contact with and supporting the adjacent first fixing plate 8 and the adjacent second fixing plate 9.

Specifically, the cyclone tube 7 consists of a central tube 11, an impeller 12 and an outer barrel 13, the central tube 11, the impeller 12 and the outer barrel 13 are coaxially arranged, the impeller 12 is inserted into the upper end of the outer barrel 13 and sleeved at the lower end of the central tube 11, and the top of the impeller 12 is flush with the top of the outer barrel 13;

an annular boss is fixedly arranged on the outer side of the central tube 11 and the outer wall of the outer barrel 13, and the top of the central tube 11 is inserted into and penetrates through the first fixing plate 8; the bottom of the outer cylinder 13 is inserted through the second fixing plate 9, and the lower end of the outer cylinder 13 is tapered.

The operating principle of the cyclone tube 7 is as follows:

the gas enters tangentially along the top of the outer cylinder 13, and after being guided by the helical blades on the impeller 12, the gas firstly rotates downwards along the axial direction, particles in the gas are separated under the action of centrifugal force, the separated particles are discharged from the lower part of the outer cylinder 13, and the purified gas is reversely rotated from the bottom of the central pipe 11 and is discharged from the top.

It will be understood that the number of swirl tubes 7 can be determined according to the magnitude of the rated inlet air flow, and the specific number is not excessively limited here.

One end of the air outlet connecting pipe 10 extends into the air pre-filter and penetrates through the first fixing plate 8, and the other end of the air outlet connecting pipe passes through the second fixing plate 9 and extends out of the air pre-filter, so that the air cleaned by the cyclone pipe 7 is discharged out of the air pre-filter.

The second recess has all been seted up along its hoop on the lateral wall of first fixed plate 8 and second fixed plate 9, the part of corresponding filter screen 3 and first fixed plate 8 and the contact of second fixed plate 9 be equipped with along its hoop with second recess complex second protruding to utilize the bellied cooperation of second recess and second to increase filter screen 3's mounting strength and the leakproofness between filter screen 3 and the fixed plate, in order to prevent the infiltration of rainwater.

Because the bottom of rain-proof cap 5 has outside convex first hem, first hem can shelter from the top of filter screen 3, and when meetting rainy weather, the rainwater can be followed first hem and outwards flowed, and can not flow in the gap between filter screen 3 and the fixed plate, has further guaranteed the leakproofness between filter screen 3 and the fixed plate.

It can be understood that, in practical applications, a rubber sealing ring may be further disposed between the second groove and the second protrusion to improve the sealing performance between the second groove and the second protrusion, and the arrangement of the rubber sealing ring may be selected according to practical requirements, which is not limited to this.

In order to facilitate the observation of the dust in the dust collection chamber 4, the dust collection chamber 4 is made of transparent materials so as to monitor the working state in real time and clean the dust in the dust collection chamber 4 in time.

The filter screen 3 and the dust collecting cavity 4 can be independently disassembled and assembled, so that the air pre-filter is convenient to clean, the cleaning capacity of the air pre-filter is greatly improved, and the air cleaning capacity of the air pre-filter is effectively guaranteed.

With cyclone tube 7 as the core component filtering separation, and filter screen 3 and dust collecting chamber 4 can carry out the dismouting, can be convenient when cyclone tube 7 blocks up change the clearance, guaranteed air filter's efficiency.

Example 2

The utility model discloses a in another typical implementation mode, an air filtration system is proposed, including air prefilter and air cleaner in embodiment 1, the one end that the takeover 10 of giving vent to anger in the air prefilter stretches out second fixed plate 9 communicates with air cleaner's air inlet.

Specifically, the air cleaner comprises a machine shell and a filter element, the filter element is located inside the machine shell, an air inlet of the air cleaner is connected with the air outlet connecting pipe 10, an air outlet of the air cleaner is connected with an air inlet pipe of the engine, and air filtered by the air cleaner can be further filtered and cleaned to remove fine dust in the air and ensure the cleanliness of the air.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by 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 protection scope of the present invention.

Claims

1. The utility model provides an air prefilter convenient to deashing, its characterized in that includes shell and vertical a plurality of cyclone tubes that set up in shell inside, the shell comprises rain-proof cap, filter screen and the dust collection chamber that from the top down connects gradually, the bottom and the first fixed plate of rain-proof cap can be dismantled and be connected, and the top and the second fixed plate in dust collection chamber can be dismantled and be connected, cyclone tube is located between first fixed plate and the second fixed plate, the filter screen can be dismantled with rain-proof cap, dust collection chamber and be connected.

2. The air prefilter for facilitating the removal of ash as claimed in claim 1 further comprising an air outlet pipe, wherein one end of said air outlet pipe extends from the bottom of said housing and the other end extends upward through said first retaining plate.

3. The air prefilter for facilitating ash removal according to claim 1 wherein the bottom of said rain hat is provided with a first flange protruding outwards along the circumferential direction, and the diameter of said first flange is larger than that of said first fixing plate.

4. The air prefilter for facilitating ash removal according to claim 3, wherein a first groove is formed at the bottom of said first folded edge along the circumferential direction thereof, and a first protrusion is formed at the top of said first fixing plate at a position corresponding to the top of said first fixing plate, and said first protrusion is inserted into said first groove.

5. The air prefilter for facilitating ash removal according to claim 1, wherein said screen is composed of a first screen unit and a second screen unit, and both said first screen unit and said second screen unit are of a semi-arc structure; one end between the first filter screen unit and the second filter screen unit is rotatably connected through a rotating shaft, and the other end is fixedly connected through a fastening bolt.

6. The air prefilter facilitating ash removal according to claim 1, wherein the dust collecting chamber is a cavity structure with an upper part opened, and a cavity of the dust collecting chamber is communicated with the bottom of the cyclone tube.

7. The air prefilter for facilitating dust removal according to claim 1 wherein said second retaining plate has an upwardly bent second flange and a downwardly bent third flange, said third flange having an inside diameter equal to the outside diameter of the top of the dust collection chamber.

8. The air prefilter facilitating ash removal according to claim 1, wherein the top of the cyclone tube penetrates through the first fixing plate, the bottom of the cyclone tube penetrates through the second fixing plate, the cyclone tube is composed of a central tube, an impeller and an outer tube, the impeller is inserted into the upper end of the outer tube and sleeved on the lower end of the central tube, and the top of the impeller is flush with the top of the outer tube.

9. The air prefilter facilitating ash removal according to claim 1, wherein the side walls of the first fixing plate and the second fixing plate are both provided with second grooves along the circumferential direction, and the filter screen is provided with second protrusions matched with the second grooves.

10. An air filtering system, which comprises the air prefilter for facilitating ash removal according to any one of claims 1 to 9, and further comprises an air filter, wherein an air inlet of the air filter is communicated with an air outlet connecting pipe, and an air outlet of the air filter is communicated with an air inlet pipe of an engine.