Air filter structure capable of effectively prolonging maintenance period

Abstract

The utility model discloses an air filtering structure capable of effectively prolonging the maintenance period, belongs to the technical field of engine air filtering, and solves the problems that an existing air filter is short in maintenance period and high in maintenance cost. The air filtering structure comprises a filtering shell, the top of the filtering shell is provided with a connecting pipe communicated with the interior of the filtering shell, the connecting pipe is sleeved with an air filtering cap with the air inlet and protection functions, a first pre-filtering element is arranged in the air filtering cap, an air outlet of the first pre-filtering element is communicated with the interior of the filtering shell, and an air outlet of the first pre-filtering element is communicated with the interior of the filtering shell. A second pre-filter element is arranged in the filter shell, a fine filter element is arranged in the second pre-filter element, an air outlet pipe communicated with an inner cavity of the fine filter element is arranged at one end of the filter shell, and a detachable sealing end cover is arranged at the other end of the filter shell. According to the air filter structure capable of effectively prolonging the maintenance period, the service life of the air filter is prolonged, and the fault occurrence rate of falling off is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of engine air filters, in particular to an air filter structure which can effectively extend the maintenance cycle. Background Art

[0002] With the development of diesel engine technology and increasingly stringent maintenance requirements, existing diesel engine technology has been facing more severe challenges. Effectively extending the maintenance cycle of the engine has always been the goal pursued by major manufacturers.

[0003] Prolonging the maintenance cycle of the air filter is one of the effective ways, such as Figure 1 As shown, the air filter intake structure of most existing diesel engines is an open hole structure 15 of the shell. In actual use, when the engine is in operation, dust and other oily impurities are easily intruded into the engine equipped with the air filter of this structure. When operating in an outdoor environment, it is more likely to enter a large area of ​​dust. In the rainy season, it is more likely to enter water, causing corrosion and rust of the internal structure, etc., affecting the normal use and life cycle of the air filter, resulting in frequent replacement of the filter element or even the entire air filter, increasing maintenance costs. The structural support bracket is weak in strength and has few stress points. The engine is prone to vibration and fall off during long-term operation, resulting in a high failure rate. In summary, the existing situation cannot meet the requirements of effectively extending the maintenance cycle of the engine. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide an air filter structure which effectively prolongs the maintenance cycle, increases the service life of the air filter, and reduces the failure rate of falling off, and has the characteristics of wide application range and strong practicality.

[0005] The technical solution adopted by the utility model is: an air filter structure for effectively extending the maintenance cycle, comprising a filter housing, a connecting pipe connected to the interior of the filter housing is provided on the top of the filter housing, an air filter cap with air intake and protection functions is sleeved on the connecting pipe, a first pre-filter element is provided in the air filter cap, an air outlet of the first pre-filter element is connected to the interior of the filter housing, a second pre-filter element is provided in the filter housing, a fine filter element is provided in the second pre-filter element, an outlet pipe connected to the inner cavity of the fine filter element is provided at one end of the filter housing, a detachable sealing end cover is provided at the other end of the filter housing, and a supporting assembly for support is provided at the bottom of the filter housing.

[0006] As a further improvement, the air filter cap includes an air intake pipe and a rainproof top, the rainproof top is arranged at the upper end of the air intake pipe, the lower end of the air intake pipe is sleeved on the connecting pipe, the air intake pipe is provided with multiple air intake holes, and the first pre-filter element is arranged in the air intake pipe.

[0007] Furthermore, a plurality of expansion grooves are provided at one end of the air inlet pipe away from the rainproof roof.

[0008] Furthermore, the outer diameter of the rainproof roof is greater than the outer diameter of the air intake pipe, and the outer side surface of the rainproof roof is an arc-shaped structure.

[0009] Furthermore, the support assembly includes multiple support seats and multiple connecting seats, the connecting seats are installed on both sides of the filter housing, the support seats are installed on the engine frame, the top of the support seats are provided with an arc groove compatible with the filter housing, the filter housing is installed on the arc groove, and the connecting seats on both sides are respectively connected to the two ends of the support seats by locking bolts.

[0010] Furthermore, the sealing end cover is provided with a plurality of quick buckles, and the sealing end cover is connected to the filter housing via the quick buckles.

[0011] Furthermore, the air outlet pipe is provided with a connection port for connecting to the oil-gas separator.

[0012] Furthermore, an air filter alarm indicator is provided above the air outlet pipe, and a detection end of the air filter alarm indicator extends into the air outlet pipe.

[0013] Beneficial Effects

[0014] Compared with the prior art, the utility model has the following advantages:

[0015] The utility model discloses an air filter structure which effectively prolongs the maintenance cycle, by arranging an air filter cap on the filter housing, thereby changing the way air enters, and the air enters through the air inlet of the intake pipe instead of the original housing opening structure, and a rainproof top is arranged on the top of the intake pipe, thereby ensuring the air intake flow rate and effectively preventing some impurities such as dust, rainwater, oil and dirt from entering the air filter, effectively prolonging the service life of the air filter, and by arranging the filter housing as a non-porous structure, compared with the traditional opening structure, effectively reducing dust and other oil impurities from entering the air filter from the housing surface, thereby improving the filtering capacity of the air filter element, and at the same time prolonging the service life of the filter element, and reducing the maintenance cost, and by arranging the support assembly, the support assembly is firstly arranged, and ... The seat is installed on the engine frame, and then the connecting seat and the supporting seat are connected with locking bolts to fix the entire device, effectively avoiding the phenomenon of long-term vibration breakage and separation, and effectively reducing the occurrence of faults. By arranging a connecting port on the exhaust pipe, the oil-gas mixture produced in the combustion chamber of the crankcase is separated by the oil-gas separator, and the exhaust part is connected to the connecting port through the exhaust pipe, and then enters the compressor port, and finally flows into the combustion chamber for combustion and is discharged with the exhaust system, effectively reducing the crankcase exhaust volume. This structure effectively reduces impurities such as dust, improves the service life of the air filter, extends the replacement cycle of the filter element, and extends the maintenance cycle of the air filter, which meets the requirements of effectively extending the maintenance cycle of the engine, and has the characteristics of strong practicality and wide application range. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the main structure of the prior art;

[0017] Figure 2 It is a three-dimensional structural schematic diagram of the utility model;

[0018] Figure 3 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0019] Figure 4 It is an enlarged schematic diagram of the cross-sectional structure of the air intake pipe in the utility model.

[0020] Among them: 1-filter housing, 2-air filter cap, 3-support assembly, 4-connecting pipe, 5-second pre-filter element, 6-fine filter element, 7-first pre-filter element, 8-sealing end cover, 9-exhaust pipe, 10-quick buckle, 11-air filter alarm indicator, 12-expansion slot, 13-locking bolt, 14-connecting port, 15-opening structure, 21-air inlet, 22-rainproof top, 23-inlet pipe, 31-support seat, 32-connecting seat. DETAILED DESCRIPTION

[0021] The present invention will be further described below with reference to the specific embodiments in the accompanying drawings.

[0022] See also Figure 1-4 As shown, an air filter structure of the utility model which effectively prolongs the maintenance cycle comprises a filter housing 1, a connecting pipe 4 communicating with the interior of the filter housing 1 is provided on the top of the filter housing 1, an air filter cap 2 with air intake and protection functions is sleeved on the connecting pipe 4, a first pre-filter element 7 is provided in the air filter cap 2, an air outlet of the first pre-filter element 7 is communicated with the interior of the filter housing 1, a second pre-filter element 5 is provided in the filter housing 1, a fine filter element 6 is provided in the second pre-filter element 5, an air outlet pipe 9 communicating with the inner cavity of the fine filter element 6 is provided at one end of the filter housing 1, and a detachable sealing end cover 8 is provided at the other end of the filter housing 1. A supporting assembly 3 is provided at the bottom of the filter housing 1. Air enters the air filter cap 2 through the air inlet hole 21 of the air inlet pipe 23, and then enters the filter housing 1 after preliminary filtration through the first pre-filter element 7, and then is discharged from the air outlet pipe 9 after passing through the second pre-filter element 5 and the fine filter element 6 in sequence. In this process, the air filter cap 2 is provided on the filter housing 1 to change the way air enters. The air enters from the original housing opening structure instead of the air inlet hole 21 of the air inlet pipe 23, and a rainproof top 22 is provided on the top of the air inlet pipe 23 to ensure the uniformity of the air intake flow rate. When the filter housing 1 is set as a non-porous structure, compared with the traditional open-pore structure, it can effectively prevent some dust, rainwater, oil and other impurities from entering the air filter, effectively prolonging the service life of the air filter. By setting the filter housing 1 as a non-porous structure, compared with the traditional open-pore structure, it can effectively reduce the dust and other oil impurities from the housing surface entering the air filter, improve the filtering capacity of the air filter element, and at the same time prolong the service life of the filter element, and reduce the maintenance cost. By setting the support assembly 3, the support seat 31 is first installed on the engine frame, and then the locking bolt 13 is used to connect the connecting seat 32 and the supporting seat 31, so as to fix the entire device, effectively In order to avoid the phenomenon of long-term vibration breakage and detachment, and effectively reduce the occurrence of faults, a connecting port 14 is set on the outlet pipe 9, so that the oil-gas mixture produced in the crankcase combustion chamber is separated by the oil-gas separator, and the exhaust part is connected to the connecting port 14 through the exhaust pipe, and then enters the compressor port, and finally flows into the combustion chamber for combustion and is discharged with the exhaust system, effectively reducing the crankcase exhaust volume. This structure effectively reduces impurities such as dust, improves the service life of the air filter, extends the replacement cycle of the filter element, and extends the maintenance cycle of the air filter, meeting the requirements of effectively extending the maintenance cycle of the engine.

[0023] Specifically, the air filter cap 2 includes an air intake pipe 23 and a rainproof top 22. The rainproof top 22 is arranged at the upper end of the air intake pipe 23. The lower end of the air intake pipe 23 is sleeved on the connecting pipe 4. The air intake pipe 23 is provided with a plurality of air intake holes 21. The first pre-filter element 7 is arranged in the air intake pipe 23. The rainproof top 22 effectively prevents rainwater from entering the air filter structure when outdoors, thereby effectively improving the service life of the air filter. The first pre-filter element 7 cooperates with the filter element built into the filter housing 1 to further improve the overall filtering effect of the air filter.

[0024] Preferably, a plurality of expansion grooves 12 are provided at one end of the air inlet pipe 23 away from the rainproof roof 22, so that when the air inlet pipe 23 is plugged into the connecting pipe 4, it has a tensioning effect on it, making the connection between the air inlet pipe 23 and the connecting pipe 4 more secure.

[0025] Furthermore, the outer diameter of the rainproof top 22 is greater than the outer diameter of the air inlet pipe 23 , which plays a role in shielding rain. The outer side of the rainproof top 22 is an arc-shaped structure, which is conducive to guiding drainage and preventing rainwater from splashing into the air inlet 21 .

[0026] Furthermore, the support assembly 3 includes multiple support seats 31 and multiple connecting seats 32. The connecting seats 32 are installed on both sides of the filter housing 1, and the support seat 31 is installed on the engine frame. The top of the support seat 31 is provided with an arc groove adapted to the filter housing 1, and the filter housing 1 is installed on the arc groove. The connecting seats 32 on both sides are respectively connected to the two ends of the support seat 31 through locking bolts 13. The support seat 31 is first installed on the engine frame, and then the locking bolts 13 are used to connect the connecting seat 32 and the support seat 31, so as to fix the entire device, effectively avoid the phenomenon of long-term vibration breakage and detachment, and effectively reduce the occurrence of failures.

[0027] Furthermore, the sealing end cover 8 is provided with a plurality of quick buckles 10 , and the sealing end cover 8 is connected to the filter housing 1 via the quick buckles 10 , so that the sealing end cover 8 can be quickly disassembled, which is beneficial for replacing and cleaning the second pre-filter element 5 and the fine filter element 6 .

[0028] Furthermore, the exhaust pipe 9 is provided with a connection port 14 for connecting to the oil-gas separator, so that after the oil-gas mixture produced in the crankcase combustion chamber is separated into oil and gas by the oil-gas separator, the exhaust part is connected to the connection port 14 through the exhaust pipe, and then enters the compressor port, and finally flows into the combustion chamber for combustion and is discharged with the exhaust system, effectively reducing the crankcase smoke emission.

[0029] Furthermore, an air filter alarm indicator 11 is provided above the air outlet pipe 9, and a detection end of the air filter alarm indicator 11 extends into the air outlet pipe 9, for reminding maintenance personnel that the filter element needs to be replaced and cleaned, thereby ensuring that the air filter structure can operate effectively.

[0030] When the air filter structure of the present embodiment is used to effectively extend the maintenance cycle, air enters the air filter cap 2 through the air inlet hole 21 of the intake pipe 23, then enters the filter housing 1 after preliminary filtration through the first pre-filter element 7, and then is discharged from the outlet pipe 9 after passing through the second pre-filter element 5 and the fine filter element 6 in sequence. In this process, the air filter cap 2 is arranged on the filter housing 1 to change the way air enters. The air enters through the air inlet hole 21 of the intake pipe 23 instead of the original opening structure of the housing, and a rainproof top 22 is arranged on the top of the intake pipe 23, so as to ensure the air intake flow rate while effectively preventing some dust, rainwater, oil and other impurities from entering the air filter, thereby effectively improving the service life of the air filter. By setting the filter housing 1 as a non-porous structure, compared with the traditional opening structure, it is effectively reduced that dust and other oil impurities enter the air filter from the surface of the housing. The filter element 3 improves the filtering capacity of the air filter element, and also prolongs the service life of the filter element, and reduces the maintenance cost. By setting the support assembly 3, the support seat 31 is first installed on the engine frame, and then the locking bolt 13 is used to connect the connecting seat 32 and the support seat 31, so as to fix the entire device, effectively avoiding the phenomenon of long-term vibration breakage and separation, and effectively reducing the occurrence of failures. By setting the connecting port 14 on the outlet pipe 9, the oil-gas mixture generated by the crankcase combustion chamber is separated by the oil-gas separator, and the exhaust part is connected to the connecting port 14 through the exhaust pipe, and then enters the compressor port, and finally flows into the combustion chamber for combustion and is discharged with the exhaust system, effectively reducing the crankcase exhaust volume. The structure effectively reduces impurities such as dust, improves the service life of the air filter, prolongs the replacement cycle of the filter element, and prolongs the maintenance cycle of the air filter, meeting the requirements of effectively extending the maintenance cycle of the engine. The utility model is an air filter structure that effectively prolongs the maintenance cycle, improves the service life of the air filter, and reduces the failure rate of falling off, and has the characteristics of wide application range and strong practicality.

[0031] 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. An air filter structure that effectively extends the maintenance cycle, characterized in that: The invention comprises a filter housing (1), wherein a connecting pipe (4) communicating with the interior of the filter housing (1) is provided at the top of the filter housing (1), an air filter cap (2) having air intake and protection functions is sleeved on the connecting pipe (4), a first pre-filter element (7) is provided inside the air filter cap (2), an air outlet of the first pre-filter element (7) is communicated with the interior of the filter housing (1), a second pre-filter element (5) is provided inside the filter housing (1), a fine filter element (6) is provided inside the second pre-filter element (5), an air outlet pipe (9) communicating with the inner cavity of the fine filter element (6) is provided at one end of the filter housing (1), a detachable sealing end cover (8) is provided at the other end of the filter housing (1), and a supporting assembly (3) for supporting is provided at the bottom of the filter housing (1).

2. The air filter structure for effectively extending the maintenance cycle according to claim 1, characterized in that: The air filter cap (2) comprises an air intake pipe (23) and a rainproof top (22), wherein the rainproof top (22) is arranged at the upper end of the air intake pipe (23), the lower end of the air intake pipe (23) is sleeved on the connecting pipe (4), the air intake pipe (23) is provided with a plurality of air intake holes (21), and the first pre-filter element (7) is arranged in the air intake pipe (23).

3. The air filter structure for effectively extending the maintenance cycle according to claim 2 is characterized in that: A plurality of expansion grooves (12) are provided at one end of the air inlet pipe (23) away from the rainproof roof (22).

4. The air filter structure for effectively extending the maintenance cycle according to claim 2, characterized in that: The outer diameter of the rainproof roof (22) is greater than the outer diameter of the air inlet pipe (23), and the outer side surface of the rainproof roof (22) is an arc-shaped structure.

5. The air filter structure for effectively extending the maintenance cycle according to claim 1, characterized in that: The support assembly (3) comprises a plurality of support seats (31) and a plurality of connecting seats (32), wherein the connecting seats (32) are mounted on both sides of the filter housing (1), and the support seat (31) is mounted on the engine frame. The top of the support seat (31) is provided with an arc groove matched with the filter housing (1), and the filter housing (1) is mounted on the arc groove. The connecting seats (32) on both sides are respectively connected to the two ends of the support seat (31) by locking bolts (13).

6. The air filter structure for effectively extending the maintenance cycle according to claim 1, characterized in that: The sealing end cover (8) is provided with a plurality of quick buckles (10), and the sealing end cover (8) and the filter housing (1) are connected via the quick buckles (10).

7. The air filter structure for effectively extending the maintenance cycle according to claim 1, characterized in that: The air outlet pipe (9) is provided with a connecting port (14) for connecting to the oil-gas separator.

8. The air filter structure for effectively extending the maintenance cycle according to claim 1, characterized in that: An air filter alarm indicator (11) is arranged above the air outlet pipe (9), and a detection end of the air filter alarm indicator (11) extends into the air outlet pipe (9).

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