A method for setting up a high efficiency filter in a box at the end of a large oil mist collector

Abstract

The present invention discloses a method for setting up a box-type high-efficiency filter at the end of a large-scale oil mist collector, which arranges the box-type high-efficiency filters in a maximum number in the square box based on the horizontal and vertical surfaces of the square box, one side of the square box corresponds to the side of the large-scale oil mist collector on which the collector exhaust port is arranged, and a total air inlet is provided on the box wall of the square box on this side corresponding to the collector exhaust port of the large-scale oil mist collector. Four box-type high-efficiency filter arrangement modes are included according to different sizes of the large-scale oil mist collector, and the method has the characteristics of being able to maximize the number of box-type high-efficiency filters in a limited space to ensure that the gas discharged at the tail of the large-scale oil mist collector is effectively purified and treated to the maximum extent and the effective purification treatment time is greatly improved, so that there is no need to set a chimney at the tail of the large-scale oil mist collector, and the purified gas can be directly discharged indoors.

Description

Technical Field

[0001] The invention belongs to the technical field of oil mist collectors, and in particular relates to a method for setting a box-type high-efficiency filter at the end of a large oil mist collector. Background Art

[0002] At present, some existing large oil mist collectors use multiple groups of electrostatic modules to electrostatically adsorb oil mist particles. Such large oil mist collectors generally have a good adsorption effect on some extremely fine aerosol particles during initial operation. However, as the operation time increases, the electrostatic adsorption capacity of the electrostatic modules continues to weaken. The amount of residual pollutants in the tail gas discharged by large oil mist collectors is large, and the maintenance workload of large oil mist collectors is heavy, resulting in users often tacitly accepting the phenomenon that such large oil mist collectors have a large amount of residual pollutants in the tail gas due to the weakening of electrostatic adsorption capacity.

[0003] Some other existing large oil mist collectors absorb oil mist particles by filtering and adsorption. Generally, high-efficiency filter materials are set at a certain point inside the large oil mist collector box. The filtering cross-section and area of ​​the high-efficiency filter materials are limited by the space of the large oil mist collector box and cannot be freely expanded. If the filtering cross-section of the high-efficiency filter materials is to be expanded, the large oil mist collector box also needs to be expanded accordingly. Such large oil mist collectors have a short effective operation cycle and require frequent maintenance or replacement of filter materials.

[0004] There are also some other large oil mist collectors whose tail processing materials will choose medium-efficiency filter materials with higher gas permeability. Although the gas absorption amount is relatively guaranteed, the purification efficiency is reduced.

[0005] In summary, due to the constraints of the large oil mist collector box space and the setting ideas of conventional high-efficiency filters, the effective purification treatment cycle of the large oil mist collector is short, that is, maintenance is required before operation, or the gas discharged from the tail of the large oil mist collector is not effectively purified to the maximum extent, and the residual pollutant concentration in the gas discharged from the tail of the large oil mist collector is still very high. It is necessary to erect a high-altitude chimney to discharge the tail gas to avoid direct discharge of the tail gas affecting the air quality within a certain range of the ground space. Summary of the invention

[0006] In view of the shortcomings of the prior art, the present invention aims to provide a method for setting up a box-type high-efficiency filter at the end of a large oil mist collector, which maximizes the number of box-type high-efficiency filters in a limited space to ensure that the gas discharged from the tail of the large oil mist collector is effectively purified to the maximum extent and the effective purification time is greatly increased.

[0007] To achieve the above object, the present invention adopts the following technical solutions:

[0008] A method for setting up a box-type high-efficiency filter at the end of a large oil mist collector, wherein the box-type high-efficiency filters are arranged and integrated in the square box in a maximum number relying on the horizontal and vertical surfaces of a square box, one side of the square box corresponds to a side of the large oil mist collector on which a collector exhaust port is provided, and a total air inlet is provided on the box wall on this side of the square box corresponding to the collector exhaust port of the large oil mist collector.

[0009] When there is no space left to arrange extra box-type high-efficiency filters after arranging the box-type high-efficiency filters along the five surfaces of the space inside the square box, the box-type high-efficiency filters are arranged in the square box on both sides of the total air inlet along the inner walls of the square box on both sides to form a side filter group, a first end filter group and a second end filter group are arranged at both ends between the side filter groups, a third end filter group is arranged between the side filter groups opposite to the total air inlet, an air intake gap is formed between the first end filter group and the second end filter group, the air intake surfaces of the side filter group, the first end filter group, the second end filter group and the third end filter group are respectively parallel to the inner walls of the corresponding square box, an air-exhaust gap is formed between the side filter group and the first end filter group, the second end filter group and the third end filter group, and an air-exhaust gap is formed between the first end filter group, the second end filter group and the third end filter group.

[0010] When box-type high-efficiency filters are arranged along the five surfaces of the space inside the square box, and there is surplus space in the square box to arrange box-type high-efficiency filters again, the box-type high-efficiency filters are located on both sides of the total air inlet in the square box and arranged along the inner wall surfaces on both sides of the square box to form side filter groups, and the first end filter group and the second end filter group are arranged at both ends between the side filter groups, respectively, and a third end filter group is arranged between the side filter groups opposite to the total air inlet, and a fourth end filter group is arranged between the side filter groups near the total air inlet, and the end of the fourth end filter group is provided with a filter corresponding to the total air inlet. An air intake gap, an air intake surface of the side filter group, the first end filter group, the second end filter group, the third end filter group and the fourth end filter group are respectively parallel to the inner wall surface of the corresponding square box, an air-through gap is formed between the side filter group and the first end filter group, the second end filter group, the third end filter group and the fourth end filter group, an air-through gap is formed between the first end filter group, the second end filter group and the third end filter group, an air-through gap is formed between the fourth end filter group and the first end filter group, and an exhaust gap is formed between the fourth end filter group and the inner wall surface of the corresponding square box.

[0011] When the space inside the square box is long and narrow and after the side filter groups are arranged, the width between the side filter groups on both sides is only suitable for arranging one group of horizontal filter groups placed horizontally, the box-type high-efficiency filters are located on both sides of the total air inlet in the square box and are arranged along the inner wall surfaces of the largest surfaces on both sides of the square box to form side filter groups, the horizontal filter groups are arranged in parallel between the side filter groups on both sides, and air-passing gaps are formed between the side filter groups and the horizontal filter groups, and between the horizontal filter groups, wherein except for the horizontal filter group farthest from the total air inlet, the exhaust surfaces of the other layers of the horizontal filter groups are provided with n-shaped exhaust ducts, the horizontal filter group close to the total air inlet is provided with at least one box-type high-efficiency filter to form an air inlet gap, and the n-shaped exhaust duct of the horizontal filter group is closed at one end close to the air inlet gap.

[0012] When the side filter groups are arranged in the space inside the square box and the width between the side filter groups is large enough to accommodate an even number of middle filter groups parallel to the side filter groups, the box-type high efficiency filters are located on both sides of the total air inlet in the square box and are arranged along the inner walls of both sides of the square box to form side filter groups, an even number of middle filter groups parallel to the side filter groups are arranged between the side filter groups, and air-passing gaps are formed between the side filter groups and the middle filter groups, and between the middle filter groups, and the upper and lower ends or the front and rear ends of the air-passing gaps are staggered and closed.

[0013] Furthermore, the side filter group, the first end filter group, the second end filter group, and the third end filter group are buckled on the keel frame by the box-type high-efficiency filter and locked and fixed by a pressure strip or compressed and fixed by another keel frame.

[0014] Furthermore, the fourth end filter group is buckled on the keel frame by a box-type high-efficiency filter and is locked and fixed by a pressure strip or pressed and fixed by another keel frame.

[0015] Furthermore, the horizontal filter group is buckled on the keel frame by the box-type high-efficiency filter and is locked and fixed by a pressure strip or pressed and fixed by another keel frame.

[0016] Furthermore, the intermediate filter group is buckled on the keel frame by the box-type high-efficiency filter and is locked and fixed by a pressure strip or pressed and fixed by another keel frame.

[0017] Furthermore, the side filter group, the first end filter group, the second end filter group and the third end filter group respectively form exhaust gaps with the inner wall surfaces of the corresponding square boxes, and the box wall of the square box is provided with a box exhaust port corresponding to the exhaust gap, and the box exhaust port is formed on the box wall of the square box on the side opposite to the main air inlet. The present invention has the following beneficial effects:

[0018] The present invention discloses a method for setting a box-type high-efficiency filter at the end of a large oil mist collector. The box-type high-efficiency filters are arranged and integrated in the square box in the maximum number by relying on the horizontal and vertical surfaces of the square box. One side of the square box corresponds to the side of the large oil mist collector on which the collector exhaust port is arranged. A total air inlet is provided on the box wall of the square box on this side corresponding to the collector exhaust port of the large oil mist collector. Four box-type high-efficiency filter arrangement modes are included according to different sizes of the large oil mist collector. The method has the characteristics of being able to maximize the number of box-type high-efficiency filters in a limited space to ensure that the gas discharged at the tail of the large oil mist collector is effectively purified to the maximum extent and the effective purification treatment time is greatly improved, so that there is no need to set a chimney at the tail of the large oil mist collector, and the purified gas can be directly discharged indoors. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the first docking structure of a square box and a large oil mist collector in a method for setting a high-efficiency filter at the end of a large oil mist collector of the present invention;

[0020] Figure 2 This is a schematic diagram of the first docking structure of a square box and a large oil mist collector in a method for setting a high-efficiency filter at the end of a large oil mist collector of the present invention;

[0021] Figure 3 This is a schematic structural diagram of a square box of a method for setting a high-efficiency filter at the end of a large oil mist collector according to the present invention;

[0022] Figure 4 This is a schematic diagram of a first arrangement form of a box-type high-efficiency filter in a square box, according to a method for setting a box-type high-efficiency filter at the end of a large oil mist collector of the present invention;

[0023] Figure 5 This is a schematic diagram of a first arrangement form of a box-type high-efficiency filter in a square box, in a method for setting a box-type high-efficiency filter at the end of a large oil mist collector according to the present invention;

[0024] Figure 6 This is a schematic diagram of a second arrangement form of a box-type high-efficiency filter in a square box, in a method for setting a box-type high-efficiency filter at the end of a large oil mist collector according to the present invention;

[0025] Figure 7 This is a schematic diagram of a second arrangement form of a box-type high-efficiency filter in a square box, in a method for setting a box-type high-efficiency filter at the end of a large oil mist collector according to the present invention;

[0026] Figure 8This is a schematic diagram of a third arrangement form of a box-type high-efficiency filter in a square box in a method for setting a box-type high-efficiency filter at the end of a large oil mist collector according to the present invention;

[0027] Fig. 9 This is a schematic diagram of a third arrangement form of a box-type high-efficiency filter in a square box in a method for setting a box-type high-efficiency filter at the end of a large oil mist collector according to the present invention;

[0028] Fig.10 It is a structural schematic diagram of a horizontal filter group of a method for setting a terminal box-type high-efficiency filter of a large oil mist collector of the present invention;

[0029] Fig.11 This is a schematic diagram of a fourth arrangement form of a box-type high-efficiency filter in a square box in a method for setting a box-type high-efficiency filter at the end of a large oil mist collector according to the present invention;

[0030] Fig.12 A schematic diagram of the fixing structure of a box-type high-efficiency filter at the end of a large oil mist collector according to the present invention;

[0031] Fig.13 It is a schematic diagram of the second docking structure of a square box and a large oil mist collector in a method for setting a high-efficiency filter at the end of a large oil mist collector of the present invention;

[0032] Fig.14 This is a schematic diagram of the second docking structure of a square box and a large oil mist collector according to a method for setting a box-type high-efficiency filter at the end of a large oil mist collector of the present invention.

[0033] In the figure: 1. Box-type high-efficiency filter; 2. Square box; 3. Large oil mist collector; 10. Side filter group; 11. First end filter group; 12. Second end filter group; 13. Third end filter group; 14. Air passage spacing; 15. Air intake gap; 16. Fourth end filter group; 17. Horizontal filter group; 18. N-shaped exhaust duct; 19. Middle filter group; 101. Keel frame; 20. Main air inlet; 21. Exhaust gap; 22. Box exhaust port; 30. Collector exhaust port. DETAILED DESCRIPTION

[0034] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments, so as to facilitate a clearer understanding of the technical ideas claimed for protection of the present invention.

[0035] like Figure 1-14The present invention is shown as a method for setting up a box-type high-efficiency filter at the end of a large oil mist collector, wherein the box-type high-efficiency filter 1 is arranged and integrated in the square box 2 in the maximum number based on the horizontal and vertical surfaces of the square box 2, one side of the square box 2 corresponds to the side of the large oil mist collector 3 on which the collector exhaust port 30 is arranged, and a total air inlet 20 is opened on the box wall of this side of the square box 2 corresponding to the collector exhaust port 30 of the large oil mist collector 3.

[0036] When there is no space left to arrange extra box-type high-efficiency filters 1 after the box-type high-efficiency filters 1 are arranged along the five surfaces of the space inside the square box 2, the box-type high-efficiency filters 1 are located on both sides of the total air inlet 20 in the square box 2 and arranged along the inner wall surfaces on both sides of the square box 2 to form a side filter group 10, a first end filter group 11 and a second end filter group 12 are arranged at both ends between the side filter groups 10, a third end filter group 13 is arranged between the side filter groups 10 opposite to the total air inlet 20, an air intake gap 15 is formed between the first end filter group 11 and the second end filter group 12, and the air intake surfaces of the side filter group 10, the first end filter group 11, the second end filter group 12 and the third end filter group 13 are respectively aligned with the inner wall surfaces of the corresponding square box 2. In parallel, an air-passing gap 14 is formed between the side filter group 10 and the first end filter group 11, the second end filter group 12, and the third end filter group 13, and an air-passing gap 14 is formed between the first end filter group 11, the second end filter group 12, and the third end filter group 13. An exhaust gap 21 is formed between the side filter group 10, the first end filter group 11, the second end filter group 12, and the third end filter group 13 and the inner wall surface of the corresponding square box 2, and a box exhaust port 22 is opened on the box wall of the square box 2 corresponding to the exhaust gap 21; it is also possible that the side filter group 10, the first end filter group 11, the second end filter group 12, and the third end filter group 13 are respectively aligned with the inner wall surface of the corresponding square box 2, and the box of the corresponding square box 2

[0037] Exhaust holes are opened on the wall to discharge the purified gas.

[0038] When the box-type high-efficiency filters 1 are arranged along the five surfaces of the space in the square box 2 and there is spare space in the square box 2 to arrange the box-type high-efficiency filters 1 again, the box-type high-efficiency filters 1 are located on both sides of the total air inlet 20 in the square box 2 and are arranged along the inner wall surfaces on both sides of the square box 2 to form side filter groups 10, and the first end filter group 11 and the second end filter group 12 are arranged at both ends between the side filter groups 10, respectively, and a third end filter group 13 is arranged between the side filter groups 10 opposite to the total air inlet 20, and a fourth end filter group 16 is arranged between the side filter groups 10 near the total air inlet 20, and an air intake notch 15 corresponding to the total air inlet 20 is provided at the end of the fourth end filter group 16, and the air intake surfaces of the side filter group 10, the first end filter group 11, the second end filter group 12, the third end filter group 13 and the fourth end filter group 16 are respectively parallel to the inner wall surfaces of the corresponding square box 2, and the side filter group 10 and the first end filter group 11 are respectively parallel to the inner wall surfaces of the corresponding square box 2. An air-passing gap 14 is formed between the second end filter group 12, the third end filter group 13 and the fourth end filter group 16, an air-passing gap 14 is formed between the first end filter group 11, the second end filter group 12 and the third end filter group 13, an air-passing gap 14 is formed between the fourth end filter group 16 and the first end filter group 11, an exhaust gap 21 is formed between the fourth end filter group 16 and the inner wall surface of the corresponding square box 2, an exhaust gap 21 is formed between the side filter group 10, the first end filter group 11, the second end filter group 12 and the third end filter group 13 and the inner wall surface of the corresponding square box 2, and a box exhaust port 22 is opened on the box wall of the square box 2 corresponding to the exhaust gap 21; it is also possible that the side filter group 10, the first end filter group 11, the second end filter group 12 and the third end filter group 13 are respectively aligned with the inner wall surface of the corresponding square box 2, and an exhaust hole is opened on the box wall of the corresponding square box 2 to discharge the purified gas.

[0039] When the space in the square box 2 is narrow and long and after the side filter groups 10 are arranged, the width between the side filter groups 10 on both sides is only suitable for arranging a group of horizontal filter groups 17 placed horizontally, the box-type high-efficiency filter 1 is located in the square box 2 on both sides of the total air inlet 20 and arranged along the inner wall surface of the maximum surface of the two sides of the square box 2 to form the side filter groups 10, and the horizontal filter groups 17 are arranged in parallel between the side filter groups 10 on both sides. There is an air-passing gap 14 between the side filter groups 10 and the horizontal filter groups 17, and between the horizontal filter groups 17. Except for the horizontal filter group 17 at the farthest end from the total air inlet 20, the exhaust surfaces of the remaining layers of the horizontal filter groups 17 are An n-shaped exhaust duct 18 is provided, and a horizontal filter group 17 near the total air inlet 20 is provided with at least one box-type high-efficiency filter 1 to form an air inlet gap 15, and one end of the n-shaped exhaust duct 18 of the horizontal filter group 17 near the air inlet gap 15 is closed, and an exhaust gap 21 is formed between the two ends of the side filter group 10 and the horizontal filter group 17 and the inner wall surface of the corresponding square box 2, and a box exhaust port 22 is opened on the box wall of the square box 2 corresponding to the exhaust gap 21; it is also possible that the two ends of the side filter group 10 and the horizontal filter group 17 are respectively aligned with the inner wall surface of the corresponding square box 2, and an exhaust hole is opened on the box wall of the corresponding square box 2 to discharge the purified gas.

[0040] When the space in the square box 2 is arranged with the side filter groups 10, and the width between the side filter groups 10 on both sides can be arranged with an even number of intermediate filter groups 19 parallel to the side filter groups 10, the box-type high-efficiency filter 1 is arranged on both sides of the total air inlet 20 in the square box 2 along the inner wall surfaces on both sides of the square box 2 to form the side filter groups 10, and an even number of intermediate filter groups 19 parallel to the side filter groups 10 are arranged between the side filter groups 10, and between the side filter groups 10 and the intermediate filter groups 19, and between the intermediate filter groups 19 An air-passing gap 14 is formed, and the upper and lower ends or the front and rear ends of the air-passing gap 14 are staggered and closed. An exhaust gap 21 is formed between the side filter group 10 and the inner wall surfaces on both sides of the square box 2, and between the end of the middle filter group 19 and the inner wall surface of the corresponding square box 2. A box exhaust port 22 is opened on the box wall of the square box 2 corresponding to the exhaust gap 21; it is also possible that the ends of the side filter group 10 and the middle filter group 19 are flush with the inner wall surface of the corresponding square box 2, and exhaust holes are opened on the box wall of the corresponding square box 2 to discharge the purified gas.

[0041] Specifically, the side filter group 10, the first end filter group 11, the second end filter group 12, the third end filter group 13, the fourth end filter group 16, the horizontal filter group 17 and the middle filter group 19 are buckled on the keel frame 101 by the box-type high-efficiency filter 1 and are locked and fixed by a pressure strip or pressed and fixed by another keel frame 101.

[0042] More specifically, the box exhaust port 22 is formed on the box wall of the square box 2 on a side opposite to the main air inlet 20, so that the purified gas can be discharged in the same direction.

[0043] The interior of the box-type high-efficiency filter 1 may be filled with fiber-type filter materials or odor-removing activated carbon particles and other adsorption-type fillers.

[0044] The present invention discloses a method for setting a box-type high-efficiency filter at the end of a large oil mist collector, wherein the box-type high-efficiency filter 1 is arranged and integrated in the square box 2 in the largest number by relying on the horizontal and vertical surfaces of the square box 2, one side of the square box 2 corresponds to the side of the large oil mist collector 3 on which the collector exhaust port 30 is arranged, and a total air inlet 20 is provided on the box wall of the square box 2 on the side corresponding to the collector exhaust port 30 of the large oil mist collector 3, and the exhaust gas discharged from the large oil mist collector 3 is discharged from the collector exhaust port 30 and flows to the box in the square box 2 through the total air inlet 20 The exhaust gas is purified and filtered by the box-type high-efficiency filter 1, and then passes through the exhaust gap 21 and is finally discharged from the box exhaust port 22; according to the different sizes of the large oil mist collector 3, there are four box-type high-efficiency filter arrangement methods, which can maximize the number of box-type high-efficiency filters 1 in a limited space to ensure that the gas discharged from the tail of the large oil mist collector 3 is effectively purified to the maximum extent and the effective purification time is greatly improved, so that there is no need to set a chimney at the tail of the large oil mist collector 3, and the purified gas can be directly discharged indoors.

[0045] For those skilled in the art, various other corresponding changes and modifications can be made according to the technical solutions and concepts described above, and all of these changes and modifications should fall within the protection scope of the claims of the present invention.

Claims

1. A method for setting a high efficiency filter at the end of a large oil mist collector, characterized in that: The box-type high-efficiency filters (1) are arranged and integrated in the square box (2) in the largest number on the horizontal and vertical surfaces of the square box (2); one side of the square box (2) corresponds to the side of the large oil mist collector (3) on which the collector exhaust port (30) is provided; and a total air inlet (20) is provided on the box wall of the square box (2) on the side corresponding to the collector exhaust port (30) of the large oil mist collector (3); When there is no space left to arrange additional box-type high-efficiency filters (1) after the box-type high-efficiency filters (1) are arranged along the five surfaces of the space inside the square box (2), the box-type high-efficiency filters (1) are arranged in the square box (2) on both sides of the main air inlet (20) along the inner wall surfaces on both sides of the square box (2) to form a side filter group (10), a first end filter group (11) and a second end filter group (12) are arranged at both ends between the side filter groups (10), a third end filter group (13) is arranged between the side filter groups (10) opposite to the main air inlet (20), and the first end filter group (11) and the second end filter group (12) are arranged at both ends between the side filter groups (10). 1) and the second end filter group (12), an air inlet notch (15) is formed between the side filter group (10), the first end filter group (11), the second end filter group (12) and the third end filter group (13), the air inlet surfaces of the side filter group (10), the first end filter group (11), the second end filter group (12) and the third end filter group (13) are respectively parallel to the inner wall surface of the corresponding square box body (2), an air-passing gap (14) is formed between the side filter group (10) and the first end filter group (11), the second end filter group (12) and the third end filter group (13), and an air-passing gap (14) is formed between the first end filter group (11), the second end filter group (12) and the third end filter group (13); When the box-type high-efficiency filters (1) are arranged along the five surfaces of the space inside the square box (2) and there is surplus space inside the square box (2) for further arranging the box-type high-efficiency filters (1), the box-type high-efficiency filters (1) are arranged inside the square box (2) on both sides of the main air inlet (20) along the inner wall surfaces on both sides of the square box (2) to form a side filter group (10), a first end filter group (11) and a second end filter group (12) are arranged at both ends between the side filter groups (10), a third end filter group (13) is arranged between the side filter groups (10) opposite to the main air inlet (20), a fourth end filter group (16) is arranged between the side filter groups (10) near the main air inlet (20), and an air inlet notch (15) corresponding to the main air inlet (20) is provided at the end of the fourth end filter group (16). The air inlet surfaces of the side filter group (10), the first end filter group (11), the second end filter group (12), the third end filter group (13) and the fourth end filter group (16) are respectively parallel to the inner wall surface of the corresponding square box (2); an air gap (14) is formed between the side filter group (10) and the first end filter group (11), the second end filter group (12), the third end filter group (13) and the fourth end filter group (16); an air gap (14) is formed between the first end filter group (11), the second end filter group (12) and the third end filter group (13); an air gap (14) is formed between the fourth end filter group (16) and the first end filter group (11); and an exhaust gap (21) is formed between the fourth end filter group (16) and the inner wall surface of the corresponding square box (2); When the space inside the square box (2) is long and narrow and after the side filter groups (10) are arranged, the width between the side filter groups (10) on both sides is only suitable for arranging a group of horizontal filter groups (17) placed horizontally, the box-type high-efficiency filter (1) is arranged on both sides of the total air inlet (20) in the square box (2) along the inner wall surface of the largest surface on both sides of the square box (2) to form the side filter groups (10), the horizontal filter groups (17) are arranged in parallel between the side filter groups (10), and the side filter groups (10) and the horizontal filter groups (17) are arranged in parallel. An air-passing gap (14) is formed between the groups (17) and between the horizontal filter groups (17), wherein except for the horizontal filter group (17) farthest from the main air inlet (20), the exhaust surfaces of the remaining layers of the horizontal filter groups (17) are provided with n-shaped exhaust ducts (18), and the horizontal filter group (17) close to the main air inlet (20) is provided with at least one box-type high-efficiency filter (1) to form an air inlet gap (15), and the n-shaped exhaust duct (18) of the horizontal filter group (17) is closed at one end close to the air inlet gap (15); When the space inside the square box (2) is wide enough to accommodate an even number of intermediate filter groups (19) parallel to the side filter groups (10) after the side filter groups (10) are arranged, the box-type high efficiency filter (1) is arranged on both sides of the main air inlet (20) along the inner wall surfaces of both sides of the square box (2) to form the side filter groups (10), an even number of intermediate filter groups (19) parallel to the side filter groups (10) are arranged between the side filter groups (10), and an air-passing gap (14) is formed between the side filter groups (10) and the intermediate filter groups (19), and between the intermediate filter groups (19), and the upper and lower ends or the front and rear ends of the air-passing gap (14) are staggered and closed; The side filter group (10), the first end filter group (11), the second end filter group (12) and the third end filter group (13) respectively form an exhaust gap (21) with the inner wall surface of the corresponding square box (2); a box exhaust port (22) is provided on the box wall of the square box (2) corresponding to the exhaust gap (21); the box exhaust port (22) is formed on the box wall of the square box (2) on a side opposite to the main air inlet (20).

2. A method for installing a large oil mist collector terminal box-type high efficiency filter as claimed in claim 1, characterized in that: The side filter group (10), the first end filter group (11), the second end filter group (12), and the third end filter group (13) are buckled onto the keel frame (101) by the box-type high-efficiency filter (1) and are locked and fixed by a pressure strip or pressed and fixed by another keel frame (101).

3. A method for installing a high efficiency filter at the end of a large oil mist collector as claimed in claim 1, characterized in that: The fourth end filter group (16) is buckled onto the keel frame (101) by the box-type high efficiency filter (1) and is locked and fixed by a pressure strip or pressed and fixed by another keel frame (101).

4. A method for installing a high efficiency filter at the end of a large oil mist collector as claimed in claim 1, characterized in that: The horizontal filter group (17) is buckled onto the keel frame (101) by the box-type high-efficiency filter (1) and is locked and fixed by a pressure strip or pressed and fixed by another keel frame (101).

5. A method for installing a high efficiency filter at the end of a large oil mist collector as claimed in claim 1, characterized in that: The intermediate filter group (19) is buckled onto the keel frame (101) by the box-type high-efficiency filter (1) and is locked and fixed by a pressure strip or pressed and fixed by another keel frame (101).

6. A method for installing a high efficiency filter at the end of a large oil mist collector as claimed in claim 1, characterized in that: The side filter group (10), the first end filter group (11), the second end filter group (12) and the third end filter group (13) respectively form an exhaust gap (21) with the inner wall surface of the corresponding square box (2); a box exhaust port (22) is provided on the box wall of the square box (2) corresponding to the exhaust gap (21); the box exhaust port (22) is formed on the box wall of the square box (2) on a side opposite to the main air inlet (20).

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