CN202391611U - Integrated dust air filter - Google Patents

Abstract

The utility model discloses an integrated sand dust air filter, which comprises: an air filter housing, an air inlet, an air outlet and a dust discharge port are arranged on the air filter housing, and an isolation cylinder is installed in the air filter housing to isolate The cylinder divides the inner chamber of the air filter housing into an air intake chamber connected with the air inlet, a filter element chamber connected with the air outlet, and a dust collection chamber connected with the dust outlet; a swirl tube is installed in the air inlet chamber, and the filter element A filter element is installed in the cavity, and the swirl pipe connects the air inlet cavity with the filter element cavity and the dust collection cavity respectively. The air filter organically combines the swirl tube coarse filter device and the filter element fine filter device in the same housing, which solves the problem that construction machinery must install a large-volume desert air filter to achieve multi-stage filtration. The combined air filter not only has high air filtration efficiency but also has a compact structure, which greatly saves installation space, prolongs the service life of the filter element, directly and effectively reduces its manufacturing and maintenance costs, and has far-reaching implications for the development of other parts in the automotive industry. Influence.

Description

Integrated dust filter

technical field

The utility model relates to the technical field of air filters, in particular to an integrated dust air filter in which a rough filter and a fine filter are optimally combined.

Background technique

The air filter is a very important part of internal combustion engine power equipment used in vehicles, construction machinery, ships, etc. It is a device that filters out dust and impurities in the air. The air filter can prevent the dust and impurities in the air from directly entering the internal combustion engine, prevent the dust and impurities from causing engine wear, and thus effectively prolong the service life of the internal combustion engine.

At present, most of my country's construction machinery works in relatively harsh conditions, so most of them are equipped with multi-stage composite desert-type air filters. However, most of the current multi-stage desert air filters are desert filter and fine filter, which are separated independently in a "T" or "B" structure. However, due to the compact structure of construction machinery and the limited installation space, this structure cannot assembly. And the air filter of the engineering machine adopts a straight-through swirl tube on the intake pipe as the primary coarse filter, and is equipped with a dust ejection device on the coarse filter. Through the unique "throat" structure of the exhaust muffler, the dust under the primary filter is ejected and discharged. However, the structural design of the "throat" of this muffler is complex and requires extremely high manufacturing precision. If there is a slight error, the ejection function will be lost, and airflow will be sucked back in severe cases. This will lead to the complete loss of the first-stage coarse filtration function of the air filter, resulting in serious early wear of the four parts of the diesel engine.

Utility model content

The technical problem to be solved by the utility model is: to provide an integrated dust air filter, which not only greatly saves the installation space, improves the air filtration efficiency, prolongs the service life of the filter element, but also directly and effectively Reduce its manufacturing and maintenance costs.

In order to solve the above technical problems, the technical solution of the utility model is: an integrated sand dust air filter, including: an air filter housing, the air filter housing includes a housing body and a front cover and a rear cover installed on the housing body Cover, the air filter housing is provided with an air inlet, an air outlet and a dust outlet, and an isolation cylinder is installed in the air filter housing, and the isolation cylinder divides the inner cavity of the air filter housing into The air intake chamber communicated with the air inlet, the filter element chamber communicated with the air outlet and the dust collection chamber communicated with the dust outlet; a swirl tube is installed in the air inlet chamber, and the filter element chamber A filter element is installed, and the swirl pipe connects the air inlet cavity with the filter element cavity and the dust collection cavity respectively.

Preferably, the swirl tube includes a central tube and a guide tube surrounding the outer peripheral surface of the central tube, an annular airflow channel is formed between the guide tube and the central tube, and a first swirl is arranged in the airflow channel. flow blade; the isolation cylinder includes a cylinder body, the cylinder body has a first end and a second end, the first end is integrated with an end cover provided with an air outlet pipe, and the air outlet pipe is installed on the On the air outlet of the air filter housing, the second end has an open structure, the outer surface of the first end is provided with a guide tube fixing plate, and the outer surface of the second end is provided with a detachable center Tube fixing plate; the guide tube of the swirl tube is installed on the guide tube fixing plate, the central tube of the swirl tube is installed on the central tube fixing plate; the filter element is installed on the cylinder In the main body, the two ends of the filter element are mounted against and sealed between the rear cover and the end cover of the isolation cylinder respectively.

Preferably, there are multiple swirl tubes arranged around the filter element.

Preferably, there are multiple swirl tubes arranged on one side of the filter element.

Preferably, a cyclone coarse filter device is installed at the air inlet of the air filter housing.

Preferably, the cyclone coarse filtering device includes: a swirl air intake cover and a swirl air intake cap installed together, the second swirl blades provided on the swirl air intake cover; the swirl air intake A rotating shaft is arranged between the cover and the swirl air intake cap, and fan blades are fixed on the shaft; a dust removal port is opened on the side wall of the swirl air intake cap.

Preferably, the dust removal port extends tangentially to the swirl inlet cap.

Preferably, an isolation flange is provided on the outer side of the swirl air intake cover.

After adopting the above-mentioned technical scheme, the beneficial effect of the utility model is: since an isolation cylinder is installed in the air filter housing, the isolation cylinder divides the inner chamber of the air filter housing into an air intake chamber connected with the air inlet, The filter element cavity communicated with the air outlet and the dust collection cavity communicated with the dust discharge port; a swirl tube is installed in the air intake cavity, and a filter element is installed in the filter element cavity, and the swirl tube separates the air intake cavity Connected with the filter chamber and the dust collection chamber, the air filter organically combines the high-efficiency swirl tube coarse filter device and the high-efficiency filter element fine filter device in the same housing, which solves the problem that construction machinery must be installed with a large-volume desert air filter. Difficulties in implementing multi-stage filtering. The integrated sand and dust air filter not only has high air filtration efficiency but also has a compact structure, which greatly saves installation space, prolongs the service life of the filter element, directly and effectively reduces its manufacturing and maintenance costs, and is also beneficial to the development of other parts in the automotive industry. profound influence.

Since the swirl tube includes a central tube and a guide tube surrounding the outer peripheral surface of the central tube, an annular airflow channel is formed between the guide tube and the central tube, and a first swirl vane is arranged in the airflow channel The isolation cylinder includes a cylinder body, the cylinder body has a first end and a second end, the first end is integrated with an end cover provided with an air outlet pipe, and the air outlet pipe is installed on the air filter On the air outlet of the housing, the second end has an open structure, the outer surface of the first end is provided with a guide tube fixing plate, and the outer surface of the second end is provided with a detachable central tube fixing plate. plate; the guide tube of the swirl tube is installed on the guide tube fixing plate, the center tube of the swirl tube is installed on the center tube fixing plate; the filter element is installed in the cylinder body , the two ends of the filter element are sealed and mounted between the rear cover and the end cover of the isolation cylinder respectively; therefore, the air filter replaces the known straight-through swirl tube with an axial intake type swirl tube , eliminating the hidden dangers caused by jet dust discharge in the straight-through swirl tube structure, not only has a compact structure but also optimizes the assembly process.

Since there are multiple swirl tubes arranged around the filter element or multiple swirl tubes arranged on one side of the filter element, the structure of the air filter is more compact, which is further suitable for the installation of extremely small air filters for engineering machinery space requirements.

Because the air inlet of the air filter housing is equipped with a cyclone coarse filter device, the air entering the cyclone tube can be preliminarily filtered, which further improves the air filter efficiency and the service life of the filter element.

Because the cyclone rough filter device comprises: the swirl air intake cover and the swirl air intake cap installed together, the second swirl vane that is provided with on the swirl air intake cover; the swirl air intake cover and Rotary shafts are arranged between the swirl air intake caps, and fan blades are fixed on the shafts; dust removal ports are provided on the side walls of the swirl flow intake caps, and the dust removal ports are arranged along the cutting edge of the swirl flow intake caps. Extending in the direction, the outer side of the swirl air inlet cover is provided with an isolation flange, so the air enters from the swirl blade at the bottom of the integrated dust air filter, and the dust is discharged from the dust removal port under the action of the second swirl blade. The isolation flange can prevent the dust swirled out from the dust removal port of the swirl air intake cap from being inhaled again, and at the same time prevent the rainwater that slides down along the swirl air intake cap from entering the filter device and reducing the service life of the filter element.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Fig. 1 is the structural representation of a kind of embodiment of the utility model;

Fig. 2 is the sectional view of B-B place among Fig. 1;

Among them: 1. cyclone coarse filter device; 2. front cover; 3. isolation cylinder; 31. guide tube fixing plate; 32. cylinder body; 33. air outlet pipe; .Swirl tube; 51. Center tube; 52. Guide tube; 53. First swirl vane; 6. Back cover; 7. Filter element; 8. Dust bag; 10. Swirl air intake cover; Inflow intake cap; 12. Fan blade; 13. Isolation flange; 14. Second swirl blade; 15. Rotary shaft; 16. Dust removal port; A. Dust collection chamber.

Detailed ways

A combined air filter, including a cyclone coarse filter device and a filter element fine filter device organically combined in the air filter housing, and a cyclone coarse filter device 1 is provided on the air inlet of the air filter housing, that is In other words, in this embodiment, the air is firstly filtered through the cyclone coarse filter device, then through the cyclone tube for secondary coarse filtration, and finally finely filtered through the filter element, so that the air filtration efficiency is high and the installation space is greatly saved. The following is a more detailed structure:

As shown in Figure 1, the front cover 2 and the rear cover 6 are installed on the shell body 4 to jointly form an air filter housing, and the air filter housing is provided with an air inlet, an air outlet and a dust discharge port. Can be round, square or other shapes. An isolation cylinder 3 is installed in the air filter housing, and the isolation cylinder 3 divides the inner cavity of the air filter housing into an air intake chamber communicated with the air inlet and a filter element communicated with the air outlet. chamber and the dust collection chamber A connected with the dust outlet; a swirl pipe 5 is installed in the air intake chamber, a filter element 7 is installed in the filter element chamber, and the swirl pipe 5 separates the air intake chamber It communicates with the filter element cavity and the dust collection cavity.

The isolation cylinder 3 includes a cylinder body 32, the cylinder body 32 has a first end and a second end, the first end is integrated with an end cover provided with an air outlet pipe 33, and the air outlet pipe 33 is installed on the On the air outlet of the air filter housing, the second end has an open structure, the outer surface of the first end is provided with a guide tube fixing plate 31, and the outer surface of the second end is provided with a detachable Central tube fixed plate 34.

The swirl tube 5 includes a central tube 51 and a guide tube 52 surrounding the outer peripheral surface of the central tube 51, an annular airflow channel is formed between the guide tube 52 and the central tube 51, and a first swirl blade 53. The guide tube 52 of the swirl tube is installed on the guide tube fixing plate 31 , and the center tube 51 of the swirl tube is installed on the center tube fixing plate 34 . The swirl tube 5 is close to the air inlet of the air filter housing, and the incoming air passes through the swirl tube 5 preferentially. When the air passes through the first swirl blade 53, due to the centrifugal force, the dust is swirled onto the wall of the draft tube 52 , reach the dust discharge chamber A under the action of inertia, and discharge the air filter body. The cleaner air in the center of the tube turns over 180° and enters the filter element 7 through the central tube 51 . As shown in FIG. 2 , there are multiple swirl tubes 5 arranged around the filter element, and of course they can also be arranged on one side of the filter element. This axial air intake swirl tube replaces the known straight-through swirl tube as the design of the rough filter, eliminating the hidden dangers caused by ejection and dust discharge. At the same time, the axial air intake swirl tube is designed as a novel structural form arranged around the filter element or arranged on one side of the filter element, which meets the requirements of the extremely small installation space of the construction machinery air filter, and realizes the organic combination of the swirl tube and the filter element in the filter element. within the same housing.

The filter element 7 is installed in the cylinder body 32 , and the two ends of the filter element 7 are mounted against and sealed between the rear cover 6 and the end cover of the isolation cylinder respectively. Preferably, the filter element 7 adopts a PU rubber filter element, which is not only tightly sealed in the radial direction, but also has a double-stage sealing effect on the end face, so that the air filtered by the two-stage coarse filter is further finely filtered, reaching a very high level. filtration efficiency.

The coarse cyclone filter device 1 includes a cyclone air intake cover 10 and a cyclone air intake cap 11 installed together. A rotating shaft 15 is arranged between the swirl air inlet cover 10 and the swirl air inlet cap 11, and fan blades 12 are fixed on the rotating shaft 15 to enhance the swirling force of dust. The swirl air intake cap 11 is cylindrical and has a dust removal port 16 on its side wall. The swirl air inlet cover 10 is provided with a plurality of second swirl vanes 14, and is provided with a wider isolation flange 13 on the outer edge, which is in the shape of a "bamboo hat". The isolation flange 13 can prevent the air from entering the swirl flow The dust at the dust removal port 16 on the top of the cap 11 is sucked into the air inlet again, which can prevent the rainwater that slides down along the swirl air intake cap 11 from entering the filter device and damaging the filter, so as to prevent rain and dust. It is worth mentioning that, as a primary coarse filter, air enters from the second swirl vane 14 at the bottom of the swirl air inlet cover 10, which also has the function of preventing rain and snow.

It works as follows:

As shown in Figure 1, the order marked by the arrows is the order of air filtration. The air enters from the bottom cyclone blade 14, passes through the fan blade 12 inside the cyclone coarse filter, and makes the dust flow from the dust removal port on the upper part of the cyclone intake cap 11. 16 spins out, this is the first step of coarse filtration; then the air enters the swirl tube 5, and when passing through the first swirl vane 53 built in the swirl tube 5, due to the centrifugal force, the dust is swirled onto the wall of the draft tube, After reaching the dust collection chamber A under the action of inertia, the air filter body is discharged through the dust bag 9, which is the second step of coarse filtration; then the clean air in the center of each tube turns 180°, enters the filter element 7 through the center tube 51, and the filter element 7. The air filtered by the two-stage coarse filter is further finely filtered, so as to achieve extremely high coarse filtration efficiency, fine filtration efficiency and service life.

All in all, the air filter organically combines the high-efficiency swirl tube coarse filter device and the high-efficiency filter element fine filter device in the same housing, which solves the problem that construction machinery must install a large-volume desert air filter to achieve multi-stage filtration. The integrated sand and dust air filter not only has high air filtration efficiency but also has a compact structure, which greatly saves installation space, especially the coarse rate efficiency is greatly improved, thereby prolonging the service life of the filter element and directly and effectively reducing its manufacturing and maintenance costs. It also has a profound impact on the development of other components in the automotive industry.

Claims (8)

1. the empty filter of integrated form sand and dust; Comprise: empty filter housing; Said empty filter housing comprises the shell body and is installed in protecgulum and the bonnet on the said shell body; Said empty filter housing is provided with suction port, air outlet and dust exhaust port, it is characterized in that: in said empty filter enclosure interior isolating cylinder is installed, the dust collection chamber that said isolating cylinder is divided into the inner chamber of said empty filter housing the air-inlet cavity that is communicated with said suction port, the filter core chamber that is communicated with said air outlet and is communicated with said dust exhaust port; In the said air-inlet cavity cyclone tube is installed, said filter core chamber is equipped with filter core, and said cyclone tube is communicated with said air-inlet cavity respectively with filter core chamber and dust collection chamber.

2. the empty filter of integrated form sand and dust as claimed in claim 1; It is characterized in that; Said cyclone tube comprises center tube and the honeycomb duct that is surrounded on said center tube outer circumferential face, forms annular air-flow path between said honeycomb duct and the center tube, is provided with first swirl vane in the said air-flow path;

Said isolating cylinder comprises a body; Said tube body has first end and second end; Said first end and an end cap that is provided with steam outlet pipe are made as one, and said steam outlet pipe is installed on the air outlet of said empty filter housing, and said second end has uncovered structure; The outer surface of said first end is provided with the honeycomb duct fixed plate, and the outer surface of said second end is provided with dismountable center tube fixed plate;

The honeycomb duct of said cyclone tube is installed on the said honeycomb duct fixed plate, and the center tube of said cyclone tube is installed on the said center tube fixed plate;

Said filter core is installed in the said tube body, and the two ends of said filter core lean sealing respectively and are installed between the end cap of said bonnet and said isolating cylinder.

3. the empty filter of integrated form sand and dust as claimed in claim 2 is characterized in that said cyclone tube has a plurality of and arranges around said filter core.

4. the empty filter of integrated form sand and dust as claimed in claim 2 is characterized in that said cyclone tube has a plurality of and arranges in said filter core one side.

5. like the empty filter of described any integrated form sand and dust of claim 1 to 4, it is characterized in that the suction port place of said empty filter housing is equipped with the whirlwind rough filtering device.

6. the empty filter of integrated form sand and dust as claimed in claim 5 is characterized in that said whirlwind rough filtering device comprises: eddy flow airscoop shroud that is installed together and eddy flow air inlet cap, and said eddy flow airscoop shroud is provided with second swirl vane; Be provided with rotating shaft between said eddy flow airscoop shroud and the eddy flow air inlet cap, be fixed with fan blade in the said rotating shaft; Offer the dedusting mouth on the sidewall of said eddy flow air inlet cap.

7. the empty filter of integrated form sand and dust as claimed in claim 6 is characterized in that said dust exhaust port extends along the tangential of said eddy flow air inlet cap.

8. the empty filter of integrated form sand and dust as claimed in claim 7 is characterized in that the outside of said eddy flow airscoop shroud is provided with the isolation flange.