Pre-filtering system with injection function

Abstract

The utility model relates to the technical field of engineering machinery, in particular to a pre-filtering system with an injection function. The pre-filtering system comprises a rotational flow pipe type pre-filter, a dust suction pipe is connected to the rotational flow pipe type pre-filter, an elbow is installed on the dust suction pipe, the pre-filtering system further comprises a radiator shell, fan blades are installed in the radiator shell, the output end of the elbow extends into the radiator shell, and the output end of the elbow faces the air suction direction of the fan blades. During use, the fan blades rotate to generate negative pressure, dust discharged to the injection end by the cyclone pipe type prefilter is sucked to the fan blades and discharged through the fan after being coiled, and the filtering efficiency of the cyclone pipe type prefilter is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of engineering machinery, in particular to a pre-filtering system with ejection. Background Art

[0002] Large excavators often operate in heavily dusty environments, and their air intake systems often utilize a multi-stage filtration system. The first stage is typically a centrifugal filter or an oil bath filter, and the second stage is a dry paper filter. Oil bath air filters frequently require oil changes, resulting in a dirty operating environment and numerous complaints from operators. Centrifugal filters are categorized as either rotary vane or cyclone tube filters. Rotary vane filters have low filtration efficiency, while cyclone tube filters are available with or without ejectors, with the latter being less efficient.

[0003] The exhaust injection filter is mostly used in the filter with injection, which is greatly affected by the intake and exhaust distance and is difficult to arrange. In order to prevent the high-temperature gas in the exhaust pipe from entering the cyclone tube and burning the filter, a one-way valve needs to be added to the filter and the exhaust tail pipe, which has a complex structure. Utility Model Content

[0004] The purpose of the utility model is to provide a pre-filter system with an ejector to improve the filtering efficiency of the cyclone tube pre-filter in order to solve the above problems.

[0005] To achieve the above-mentioned purpose, the utility model discloses a pre-filtration system with injection, which includes a cyclone tube pre-filter, a dust suction pipe connected to the cyclone tube pre-filter, an elbow installed on the dust suction pipe, and a radiator shell. Fan blades are installed in the radiator shell, and the output end of the elbow extends into the radiator shell, and the output end of the elbow faces the suction direction of the fan blades.

[0006] When in use, the fan blades rotate to generate negative pressure, which sucks the dust discharged from the cyclone tube pre-filter to the ejection end to the fan blades, and then is discharged through the fan after the disk, thereby improving the filtration efficiency of the cyclone tube pre-filter.

[0007] Preferably, the distance between the output end of the elbow and the fan blade is 40 mm-80 mm.

[0008] When in use, this distance has a higher dust removal efficiency.

[0009] Preferably, the rear portion of the radiator housing is connected to a radiator base plate, the edge of the radiator base plate is connected to a base plate fixing ear plate, and the base plate fixing bolts pass through the base plate fixing ear plate and are connected to the vehicle body.

[0010] When in use, the radiator base plate is mounted on the vehicle body by passing the base plate fixing bolts through the base plate fixing lugs, which is convenient for installation and removal.

[0011] Preferably, a housing fixing screw is connected to the front side of the radiator bottom plate, a housing fixing ear plate for accommodating the housing fixing screw passing through is connected to the radiator housing, and a housing fixing nut is connected to the housing fixing screw.

[0012] When in use, the radiator shell is mounted on the radiator base plate through the shell fixing nuts, which is convenient for installation and disassembly.

[0013] Preferably, the housing fixing lug is located inside the radiator housing.

[0014] The structure is compact and the appearance is beautiful.

[0015] Preferably, a front cover panel is sleeved on the front portion of the radiator housing, and the front cover fixing bolts pass through the front cover panel and are connected to the radiator housing, and the front cover panel is connected to the radiator front cover.

[0016] When in use, the radiator front cover is mounted on the radiator housing through the front cover fixing bolts, which is convenient for installation and removal.

[0017] Preferably, a rotating shaft is also installed in the radiator shell, the rotating shaft is connected to a blade limiting plate, the front of the blade limiting plate is connected to a blade limiting pin, the fan blade is connected to a blade fixing ring, the blade fixing ring is sleeved on the rotating shaft, the blade fixing ring is provided with a blade limiting hole adapted to the blade limiting pin, and the end of the rotating shaft is connected to a blade fixing nut.

[0018] This structure facilitates the installation and removal of the fan blades.

[0019] Preferably, a tee is connected to the middle section of the dust suction pipe, and the tee is connected to a dry filter dust exhaust valve.

[0020] Further reduce operator maintenance work and increase system ash capacity.

[0021] In summary, the beneficial effect of the utility model is that when in use, the fan blades rotate to generate negative pressure, which sucks the dust discharged from the cyclone tube pre-filter to the injection end to the fan blades and is discharged through the fan after the disk, thereby improving the filtration efficiency of the cyclone tube pre-filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a structural diagram of a pre-filtration system with ejection in the utility model;

[0023] Figure 2 yes Figure 1 Schematic diagram of the left view structure;

[0024] Figure 3 yes Figure 1 Structural diagram of the middle section AA;

[0025] Figure 4 yes Figure 1Schematic diagram of the enlarged structure of part B in the middle.

[0026] In the figure: 1. Cyclone tube pre-filter; 2. Dust suction pipe; 3. Elbow; 4. Tee; 5. Dry filter dust exhaust valve; 6. Radiator base plate; 7. Base plate fixing ear plate; 8. Base plate fixing bolts; 9. Housing fixing screw; 10. Radiator housing; 11. Housing fixing ear plate; 12. Housing fixing nut; 13. Radiator front cover; 14. Front cover panel; 15. Front cover fixing bolts; 16. Rotating shaft; 17. Rotating shaft through hole; 18. Fan blade; 19. Blade limit plate; 20. Blade limit pin; 21. Blade fixing ring; 22. Blade limit hole; 23. Blade fixing nut. DETAILED DESCRIPTION

[0027] The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0028] In the description of this application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0029] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. Throughout this application, unless otherwise specified, "plurality" means two or more.

[0030] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0031] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0032] like Figure 1As shown, a pre-filtration system with ejection includes a cyclone-type pre-filter 1, connected to a dust collection pipe 2, mounted with an elbow 3, and a radiator housing 10. Fan blades 18 are mounted within the radiator housing 10. The output end of the elbow 3 extends into the radiator housing 10 and faces the direction of air suction by the fan blades 18. Specifically, the dust collection pipe 2 is a hose.

[0033] When in use, the fan blades 18 rotate to generate negative pressure, which sucks the dust discharged from the cyclone tube pre-filter 1 to the ejection end to the fan blades 18 and is discharged through the fan after the disk, thereby improving the filtering efficiency of the cyclone tube pre-filter 1.

[0034] The middle section of the dust suction pipe 2 is connected to a tee 4 , and the tee 4 is connected to a dry filter dust exhaust valve 5 .

[0035] Further reduce operator maintenance work and increase system ash capacity.

[0036] The distance between the output end of the elbow 3 and the fan blade 18 is 40 mm to 80 mm, preferably 40 mm, 50 mm or 80 mm.

[0037] When in use, this distance has a higher dust removal efficiency.

[0038] like Figure 2 、 3 As shown, the rear of the radiator housing 10 is connected to a radiator base plate 6 , the edge of the radiator base plate 6 is connected to a base plate fixing lug plate 7 , and the base plate fixing bolts 8 pass through the base plate fixing lug plate 7 and are connected to the vehicle body.

[0039] When in use, the radiator base plate 6 is mounted on the vehicle body by passing the base plate fixing bolts 8 through the base plate fixing lugs 7, which facilitates installation and removal.

[0040] The front side of the radiator base plate 6 is connected to a housing fixing screw 9 , the radiator housing 10 is connected to a housing fixing lug 11 through which the housing fixing screw 9 passes, and the housing fixing screw 9 is connected to a housing fixing nut 12 .

[0041] When in use, the radiator housing 10 is mounted on the radiator base plate 6 through the housing fixing nut 12, which is convenient for installation and disassembly.

[0042] The housing fixing lug 11 is located inside the radiator housing 10 .

[0043] The structure is compact and the appearance is beautiful.

[0044] A front cover panel 14 is sleeved on the front of the radiator housing 10 , and a front cover fixing bolt 15 passes through the front cover panel 14 and is connected to the radiator housing 10 . A radiator front cover 13 is connected to the front cover panel 14 .

[0045] When in use, the radiator front cover 13 is mounted on the radiator housing 10 by means of the front cover fixing bolts 15 , which facilitates installation and removal.

[0046] like Figure 1 、 4 As shown, a rotating shaft 16 is also installed in the radiator housing 10, and a rotating shaft through hole 17 for the rotating shaft 16 to pass through is opened on the radiator base plate 6, and a blade limiting plate 19 is connected to the rotating shaft 16, and a blade limiting pin 20 is connected to the front of the blade limiting plate 19. The fan blade 18 is connected to a blade fixing ring 21, and the blade fixing ring 21 is sleeved on the rotating shaft 16. A blade limiting hole 22 adapted to the blade limiting pin 20 is opened on the blade fixing ring 21, and a blade fixing nut 23 is connected to the end of the rotating shaft 16.

[0047] This structure facilitates the installation and removal of the fan blades 18 .

[0048] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and replacements can be made without departing from the technical principles of the present invention. These improvements and replacements should also be regarded as the scope of protection of the present invention.

Claims

1. A pre-filtration system with ejection, comprising a cyclone tube pre-filter (1), characterized in that: The cyclone tube prefilter (1) is connected to a dust suction pipe (2), an elbow (3) is installed on the dust suction pipe (2), and further comprises a radiator housing (10), a fan blade (18) is installed in the radiator housing (10), an output end of the elbow (3) extends into the radiator housing (10), and the output end of the elbow (3) faces the air suction direction of the fan blade (18).

2. The pre-filtration system with ejection as claimed in claim 1, characterized in that: The distance between the output end of the elbow (3) and the fan blade (18) is 40 mm to 80 mm.

3. The pre-filtration system with ejection as claimed in claim 1, characterized in that: The rear part of the radiator housing (10) is connected to a radiator bottom plate (6), the edge of the radiator bottom plate (6) is connected to a bottom plate fixing ear plate (7), and the bottom plate fixing bolts (8) pass through the bottom plate fixing ear plate (7) and are connected to the vehicle body.

4. The pre-filtration system with ejection as claimed in claim 3, characterized in that: The front side of the radiator bottom plate (6) is connected to a housing fixing screw (9), the radiator housing (10) is connected to a housing fixing ear plate (11) through which the housing fixing screw (9) passes, and the housing fixing screw (9) is connected to a housing fixing nut (12).

5. The pre-filtration system with ejection as claimed in claim 4, characterized in that: The shell fixing ear plate (11) is located on the inner side of the radiator shell (10).

6. The pre-filtration system with ejection as claimed in claim 1, characterized in that: A front cover panel (14) is sleeved on the front of the radiator housing (10); a front cover fixing bolt (15) passes through the front cover panel (14) and is connected to the radiator housing (10); and a radiator front cover (13) is connected to the front cover panel (14).

7. The pre-filtration system with ejection according to any one of claims 1 to 6, characterized in that: A rotating shaft (16) is also installed in the radiator housing (10). A blade limiting plate (19) is connected to the rotating shaft (16). A blade limiting pin (20) is connected to the front of the blade limiting plate (19). The fan blade (18) is connected to a blade fixing ring (21). The blade fixing ring (21) is sleeved on the rotating shaft (16). A blade limiting hole (22) adapted to the blade limiting pin (20) is formed on the blade fixing ring (21). A blade fixing nut (23) is connected to the end of the rotating shaft (16).

8. The pre-filtration system with ejection as claimed in any one of claims 1 to 6, characterized in that: A tee (4) is connected to the middle section of the dust suction pipe (2), and the tee (4) is connected to a dry filter dust exhaust valve (5).

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