Environment-friendly primary filter

Abstract

The utility model relates to the technical field of air purifiers, in particular to an environment-friendly primary filter, which aims at solving the technical problem of overcoming the defects of high manufacturing and production cost and high transportation cost in the prior art, and is mainly realized by the following technical scheme: the environment-friendly primary filter comprises an outer frame and an inner core layer, the outer frame is of a folding structure and wraps the inner core layer, the outer frame comprises a top frame face, a middle frame face and a bottom frame face which are integrated and sequentially arranged, the inner core layer comprises a hollow inner core frame, an inner filter element and a plurality of supporting strips, the outer frame wraps the inner core layer in a folding mode, the inner core frame is simple in design structure, and the material cost is greatly reduced. The supporting strips are die-cut into strip shapes to support the internal filtering material and separate the air duct distance, the inner filter element is formed by a plurality of V-shaped parallel folded paper shapes to prepare for the subsequent assembly of the inner core layer, the folded structure can effectively reduce the wind resistance of the whole filter screen, and the production process is simple.

Description

Technical Field

[0001] The utility model relates to the technical field of air purifiers, in particular to an environmentally friendly primary filter. Background Art

[0002] An air purification filter is a structural component used for gas filtration and cleaning. It is usually made into a plate-like structure with a filter plate in the middle and a frame along the edge for support.

[0003] The primary air filters currently produced on the market use non-woven filter cotton as common filter materials. The material is relatively soft and does not have a certain strength. Therefore, during production, the filter cotton is covered with a metal mesh, a metal support frame, a metal frame, etc. to increase the strength of the filter. However, the addition of metal brackets greatly increases the production cost, and the use of metal brackets will make the primary filter cotton unable to be directly disassembled and replaced. For larger filters, production also needs to consider aspects such as avoiding complicated manufacturing processes and facilitating transportation, reducing manufacturing costs and avoiding problems such as deformation of the filter element during transportation. Utility Model Content

[0004] Therefore, the technical problem to be solved by the utility model is to overcome the defects of high manufacturing production cost and transportation cost in the prior art, thereby providing an environmentally friendly primary filter.

[0005] The above technical objectives of the utility model are achieved through the following technical solutions:

[0006] An environmentally friendly primary filter comprises an outer frame and an inner core layer, wherein the outer frame is a folded structure and is covered on the outside of the inner core layer, the outer frame comprises an integral and sequentially arranged top frame surface, a middle frame surface and a bottom frame surface, a first fold is arranged at adjacent positions of the top frame surface and the middle frame surface, and a first fold is also arranged at adjacent positions of the middle frame surface and the bottom frame surface; the inner core layer comprises a hollow inner core frame, an inner filter element and a plurality of support bars, the inner filter element is clamped and arranged in the inner core frame, and the support bars are arranged along the length direction of the inner core frame and arranged in an array along the width direction of the inner core frame.

[0007] By adopting the above technical scheme, the outer frame is made of paper and the inner core layer is wrapped by folding. The outer frame design as the outer packaging structure of the filter net can meet the requirements of different sizes. At the same time, the paper material can be recycled in an environmentally friendly way, reducing the use of various packaging bags; the inner core layer includes an inner core frame, an inner filter element and multiple support strips. The inner core frame has a simple design structure and greatly reduces the material cost. It can be reused and is very easy to replace. The support strips are high-density composite cardboard and are die-cut into strips, which can support the internal filter material and separate the air duct spacing. The inner filter element is a plurality of V-shaped origami-shaped parallel ones and are common primary non-woven filter cotton or PLA-type degradable filter cotton. The origami-shaped design prepares for the subsequent inner core layer assembly. The folding structure can effectively reduce the wind resistance of the overall filter net and the production process is simple.

[0008] Furthermore, a first flange extends from one side of the top frame surface away from the middle frame surface, the first flange is arranged along the length direction of the top frame surface and a top frame flange fold is provided at the connection with the top frame surface, a top side edge is extended outward from the upper side and the lower side of the top frame surface, and a top side fold is provided at the connection between the top side edge and the top frame surface.

[0009] By adopting the above technical solution, the side edges and the top and bottom of the top frame surface are folded to form a folding structure of the top surface of the outer frame, and the top frame flange folds and top side folds facilitate the folding of the outer frame.

[0010] Furthermore, the upper and lower sides of the middle frame surface both extend outwardly with middle side edges, and a middle fold is provided at the connection between the middle side edge and the middle frame surface on each side.

[0011] By adopting the above technical solution, the upper and lower folding of the middle frame surface forms the side edge in the height direction of the outer frame, and the middle folding line facilitates the folding of the middle frame surface.

[0012] Furthermore, a second flange extends from one side of the bottom frame surface away from the middle frame surface, the second flange is arranged along the length direction of the bottom frame surface and a bottom frame flange fold is provided at the connection with the bottom frame surface, the upper side and the lower side of the bottom frame surface extend outward to form a bottom side edge, and a bottom side fold is provided at the connection between the bottom side edge and the bottom frame surface.

[0013] By adopting the above technical solution, the side edges and the top and bottom of the bottom frame surface are folded to form the folding structure of the bottom surface of the outer frame, and the bottom frame flange folds and the bottom side folds facilitate the folding of the outer frame.

[0014] Furthermore, a bottom reinforcing side edge is extended from the bottom side edge, and the bottom reinforcing side edge is arranged on the side of the bottom side edge away from the bottom frame surface and arranged along the length direction of the bottom side edge. A plurality of plug-in pages are also extended from the side of the bottom reinforcing side edge away from the bottom side edge, and the plug-in pages are arranged in an array along the length of the bottom reinforcing side edge. Insertion page grooves are opened on the bottom side fold corresponding to the plug-in pages.

[0015] By adopting the above technical solution, the bottom side increases the structural strength of the side at the bottom through the extended bottom reinforcement side, which is convenient for bearing the internal core layer, and the inserting pages and the inserting page slot cooperate to fix the bottom reinforcement side.

[0016] Furthermore, ventilation grooves are opened in the middle of the top frame surface and the bottom frame surface, and cross reinforcement ribs are also arranged in the middle of the ventilation grooves. A tear mark is arranged in the middle of the length direction of each side of the reinforcement rib, and the tear mark is arranged along the width direction of each side.

[0017] By adopting the above technical solution, a ventilation groove is provided in the middle of the top frame surface and the bottom frame surface to facilitate the ventilation operation of the filter, and reinforcing ribs are provided in the ventilation grooves, which, on the one hand, play a supporting role for the air inlet and outlet surfaces of the filter, and on the other hand, the four divided squares can be used as the outer packaging part of the inner core layer before the filter is unpacked and used, and can be manually torn off along the tear marks when needed. The design of four pieces also facilitates the tearing off of the reinforcing ribs.

[0018] Furthermore, a plurality of first plug-in slots and a plurality of second plug-in slots are provided on two opposite sides in the length direction of the inner core frame, and a plurality of the first plug-in slots and the second plug-in slots are arranged in an array along the width direction of the inner core frame, and the first plug-in slots and the second plug-in slots are staggered, and the first plug-in slots are arranged at the top of the inner core frame, and the second plug-in slots are arranged at the bottom of the inner core frame, and the depths of the first plug-in slots and the second plug-in slots do not exceed one half of the height of the inner core frame.

[0019] Furthermore, the support bar includes a first support and a second support, the first support is clamped at the top of the inner core frame and is clamped with the first plug-in slot, and the second support is clamped at the bottom of the inner core frame and is clamped with the second plug-in slot.

[0020] By adopting the above technical solution, the filter cotton air duct is reasonably arranged according to the required size, and the upper and lower first plug-in slots and second plug-in slots are opened. When assembling or replacing, the second support is first inserted into the corresponding gap, and then the folded filter cotton-inner filter element is placed, and then the first support is inserted into the first plug-in slot, and the first plug-in slot is inserted into the remaining gap at the top of the inner filter element, and finally the inner core layer is placed in the outer frame to complete the assembly.

[0021] In summary, the technical solution of the utility model has the following advantages:

[0022] 1. The environmentally friendly primary filter provided by the utility model has an outer frame made of paper and wraps the inner core layer in a folded manner. The outer frame design as the outer packaging structure of the filter net can meet the requirements of different sizes. At the same time, the paper material can be recycled in an environmentally friendly manner, reducing the use of various packaging bags.

[0023] 2. The environmentally friendly primary filter provided by the utility model has an inner core layer including an inner core frame, an inner filter element and multiple support strips. The inner core frame has a simple design structure and greatly reduces the material cost. It can be reused and is very easy to replace. The support strips are high-density composite cardboard and are die-cut into strips, which can support the internal filter material and separate the air duct spacing.

[0024] 3. The environmentally friendly primary filter provided by the utility model has an inner filter element in the shape of multiple V-shaped origami-arranged parallel pieces and is a common primary non-woven filter cotton or PLA-type degradable filter cotton. The origami-shaped design prepares for the subsequent assembly of the inner core layer. The folded structure can effectively reduce the wind resistance of the entire filter screen, and the production process is simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 This is a schematic diagram of the overall structure of an environmentally friendly primary filter provided in one embodiment of the utility model;

[0027] Figure 2 A schematic diagram of the expanded structure of an outer frame provided in one embodiment of the utility model;

[0028] Figure 3 A schematic diagram of a partial structure of an inner core layer provided in one embodiment of the utility model;

[0029] Figure 4 This is a schematic diagram of the explosion structure of the inner core layer provided in one embodiment of the utility model.

[0030] Description of reference numerals:

[0031] 1. Outer frame; 2. Top frame surface; 21. First flange; 22. Top frame flange crease; 23. Top side; 24. Top side crease; 3. Middle frame surface; 31. Middle side; 32. Middle crease; 4. Bottom frame surface; 41. Second flange; 42. Bottom frame flange crease; 43. Bottom side; 44. Bottom side crease; 441. Insertion slot; 45. Bottom reinforcement side; 451. Insertion page; 5. First crease; 6. Ventilation slot; 61. Reinforcement rib; 611. Tear mark; 7. Inner core layer; 71. Inner core frame; 711. First insertion slot; 712. Second insertion slot; 72. Inner filter element; 73. Support bar; 731. First support; 732. Second support. DETAILED DESCRIPTION

[0032] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0033] An environmentally friendly primary filter, such as Figure 1 , Figure 2 and Figure 4 As shown, it includes an outer frame 1 and an inner core layer 7, and the outer frame 1 is a folding structure and is coated outside the inner core layer 7. The outer frame 1 is made of paper and wraps the inner core layer 7 by folding. The outer frame 1 is designed as an outer packaging structure of the filter net to meet different size requirements. At the same time, the paper material can be recycled for environmental protection, reducing the use of various packaging bags; the inner core layer 7 includes an inner core frame 71, an inner filter element 72 and a plurality of support strips 73. The inner core frame 71 has a simple design structure and greatly reduces the material cost. It can be reused and easily replaced. The support strip 73 is a high-density composite paperboard and is die-cut into strips. It can support the internal filter material and separate the air duct spacing. The inner filter element 72 is a plurality of V-shaped origami-shaped parallel origami-shaped and is a common primary non-woven filter cotton or PLA-type degradable filter cotton. The origami-shaped design is prepared for the subsequent assembly of the inner core layer 7. The folding structure can effectively reduce the wind resistance of the overall filter net, and the production process is simple.

[0034] like Figure 1 and Figure 2 As shown, the outer frame 1 includes a top frame surface 2, a middle frame surface 3 and a bottom frame surface 4 which are integrally arranged in sequence, a first fold 5 is arranged at adjacent positions of the top frame surface 2 and the middle frame surface 3, and a first fold 5 is also arranged at adjacent positions of the middle frame surface 3 and the bottom frame surface 4.

[0035] A first flange 21 extends from one side of the top frame surface 2 away from the middle frame surface 3. The first flange 21 is arranged along the length direction of the top frame surface 2 and a top frame flange fold 22 is arranged at the connection with the top frame surface 2. A top side 23 is extended outward from the upper side and the lower side of the top frame surface 2. A top side fold 24 is arranged at the connection between the top side 23 and the top frame surface 2. The side and the top and bottom of the top frame surface 2 are folded to form a folding structure of the top surface of the outer frame 1. The top frame flange fold 22 and the top side fold 24 facilitate the folding of the outer frame 1.

[0036] The middle frame surface 3 has middle side edges 31 extending outward from the upper and lower sides, and a middle fold 32 is provided at the connection between the middle side edges 31 on each side and the middle frame surface 3. The upper and lower folds of the middle frame surface 3 constitute the sides in the height direction of the outer frame 1, and the middle fold 32 facilitates the folding of the middle frame surface 3.

[0037] A second flange 41 extends from one side of the bottom frame surface 4 away from the middle frame surface 3, the second flange 41 is arranged along the length direction of the bottom frame surface 4 and a bottom frame flange fold 42 is arranged at the connection with the bottom frame surface 4, the upper side and the lower side of the bottom frame surface 4 extend outwardly to be provided with a bottom side 43, and a bottom side fold 44 is arranged at the connection between the bottom side 43 and the bottom frame surface 4. The side and the top and bottom of the bottom frame surface 4 are folded to form a folding structure of the bottom surface of the outer frame 1, and the bottom frame flange fold 42 and the bottom side fold 44 facilitate the folding of the outer frame 1.

[0038] The bottom side edges 43 are all extended with bottom reinforcement side edges 45, which are arranged on the side of the bottom side edge 43 away from the bottom frame surface 4 and along the length direction of the bottom side edge 43. The side of the bottom reinforcement side edge 45 away from the bottom side edge 43 also extends with a plurality of plug-in pages 451, which are arranged in an array along the length of the bottom reinforcement side edge 45, and the bottom side fold 44 is provided with a plug-in slot 441 corresponding to the plug-in page 451. The bottom side edge 43 increases the structural strength of the side edge at the bottom through the extended bottom reinforcement side edge 45, so as to facilitate the bearing of the internal core layer 7, and the plug-in page 451 cooperates with the plug-in slot 441 to fix the bottom reinforcement side edge 45.

[0039] like Figure 1 and Figure 2 As shown, ventilation slots 6 are provided in the middle of the top frame surface 2 and the bottom frame surface 4, and cross reinforcing ribs 61 are also provided in the middle of the ventilation slots 6. A tear mark 611 is provided in the middle of the length direction of each side of the reinforcing rib 61, and the tear mark 611 is provided along the width direction of each side. Ventilation slots 6 are provided between the top frame surface 2 and the bottom frame surface 4 to facilitate the ventilation operation of the filter. Reinforcing ribs 61 are provided in the ventilation slots 6. On the one hand, they play a supporting role on the air inlet and outlet surfaces of the filter screen. On the other hand, the four divided squares can be used as the outer packaging part of the inner core layer 7 before the filter screen is unpacked for use. When it is needed, it can be manually torn off along the tear mark 611. Designing it into four pieces also facilitates the tearing off of the reinforcing ribs 61.

[0040] like Figure 3 and Figure 4 As shown, the inner core layer 7 includes a hollow inner core frame 71, an inner filter element 72 and a plurality of support bars 73. The inner filter element 72 is clamped in the inner core frame 71. The support bars 73 are arranged along the length direction of the inner core frame 71 and in an array along the width direction of the inner core frame 71.

[0041] A plurality of first plug-in slots 711 and a plurality of second plug-in slots 712 are provided on the front and rear opposite sides in the width direction of the inner core frame 71. A plurality of first plug-in slots 711 and second plug-in slots 712 are arranged in an array along the width direction of the inner core frame 71. The first plug-in slots 711 and the second plug-in slots 712 are arranged alternately. The first plug-in slots 711 are arranged at the top of the inner core frame 71, and the second plug-in slots 712 are arranged at the bottom of the inner core frame 71. The depths of the first plug-in slots 711 and the second plug-in slots 712 do not exceed one-half of the height of the inner core frame 71. The support bar 73 includes a first support 731 and a second support 732. The first support 731 is clamped at the top of the inner core frame 71 and is clamped with the first plug-in slot 711. The second support 732 is clamped at the bottom of the inner core frame 71 and is clamped with the second plug-in slot 712. Arrange the filter cotton air duct reasonably according to the required size, open the upper and lower first plug-in slots 711 and the second plug-in slots 712, and when assembling or replacing, first insert the second support 732 into the corresponding gap, then put in the folded filter cotton-inner filter element 72, and then insert the first support 731 into the first plug-in slot 711, and insert the first plug-in slot 711 into the remaining gap at the top of the corresponding inner filter element 72, and finally put the inner core layer 7 into the outer frame 1 to complete the assembly.

[0042] The working principle and use method of the environmentally friendly primary filter: Before use, the outer frame 1 can be unfolded and stacked for transportation, and then the outer frame 1 can be folded when needed;

[0043] First, the bottom frame surface 4 is folded, the bottom reinforcement side edge 45 is folded and overlapped with the bottom side edge 43, and the inserting page 451 is inserted into the inserting page slot 441. Then, the bottom side edge 43 is folded upward along the bottom side crease 44, and the bottom side edge 43 stands up. At the same time, the second flange 41 is folded along the bottom frame flange crease 42, and the two ends of the second flange 41 are inserted into the folded gap between the bottom reinforcement side edge 45 and the bottom side 43; then the middle frame surface 3 is folded, and the middle side 31 is folded and erected along the middle, and then the middle frame surface 3 is folded and erected along the first folding line 5, and then the middle side edge 31 is inserted into the folded gap between the bottom reinforcing side edge 45 and the bottom side edge 43; finally, the top frame surface 2 is folded, the first flange 21 is folded along the top frame flange folding line 22, and the top side edges 23 on the upper and lower sides are erected along the top side folding line 24, and then closed with the bottom frame surface 4 and the first flange 21 and the top side edge 23 are inserted into the bottom frame surface 4;

[0044] The inner core layer 7 is assembled, and the upper and lower first plug-in grooves 711 and the second plug-in grooves 712 are first arranged on the inner core frame 71. When assembling or replacing, first insert the second support 732 into the corresponding gap, and then put in the inner filter element 72. After that, insert the first support 731 into the first plug-in groove 711, and insert the first support 731 into the remaining gap at the top of the inner filter element 72. Finally, put the inner core layer 7 into the folded outer frame 1 to complete the assembly.

[0045] The above description shows and describes the preferred embodiments of the utility model. As mentioned above, it should be understood that the utility model is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the utility model concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not depart from the spirit and scope of the utility model, and should be within the scope of protection of the claims attached to the utility model.

Claims

1. An environmentally friendly primary filter, characterized in that: The invention comprises an outer frame (1) and an inner core layer (7), wherein the outer frame (1) is a folding structure and is covered outside the inner core layer (7), wherein the outer frame (1) comprises an integral top frame surface (2), an intermediate frame surface (3) and a bottom frame surface (4) which are arranged in sequence, wherein a first fold (5) is arranged at adjacent positions of the top frame surface (2) and the intermediate frame surface (3), and wherein a first fold (5) is also arranged at adjacent positions of the intermediate frame surface (3) and the bottom frame surface (4); wherein the inner core layer (7) comprises a hollow inner core frame (71), an inner filter element (72) and a plurality of support bars (73), wherein the inner filter element (72) is clamped and arranged in the inner core frame (71), and wherein the support bars (73) are arranged along the length direction of the inner core frame (71) and are arranged in an array along the width direction of the inner core frame (71).

2. The environmentally friendly primary filter according to claim 1, characterized in that: A first flange (21) extends from one side of the top frame surface (2) away from the middle frame surface (3); the first flange (21) is arranged along the length direction of the top frame surface (2) and a top frame flange fold (22) is arranged at the connection with the top frame surface (2); a top side edge (23) is extended outwardly from the upper side edge and the lower side edge of the top frame surface (2); a top side fold (24) is arranged at the connection between the top side edge (23) and the top frame surface (2).

3. An environmentally friendly primary filter according to claim 2, characterized in that: The upper and lower sides of the middle frame surface (3) both extend outwardly with middle side edges (31), and a middle fold (32) is provided at the connection between the middle side edge (31) and the middle frame surface (3) on each side.

4. The environmentally friendly primary filter according to claim 3, characterized in that: A second flange (41) extends from one side of the bottom frame surface (4) away from the middle frame surface (3); the second flange (41) is arranged along the length direction of the bottom frame surface (4) and a bottom frame flange fold (42) is arranged at the connection with the bottom frame surface (4); bottom side edges (43) are extended outward from the upper side edge and the lower side edge of the bottom frame surface (4); a bottom side fold (44) is arranged at the connection between the bottom side edge (43) and the bottom frame surface (4).

5. The environmentally friendly primary filter according to claim 4, characterized in that: A bottom reinforcing side edge (45) is extended from each of the bottom side edges (43); the bottom reinforcing side edge (45) is arranged on a side of the bottom side edge (43) away from the bottom frame surface (4) and arranged along the length direction of the bottom side edge (43); a plurality of plug-in pages (451) are also extended from a side of the bottom reinforcing side edge (45) away from the bottom side edge (43); the plug-in pages (451) are arranged in an array along the length of the bottom reinforcing side edge (45); and a plug-in slot (441) is provided on the bottom side fold (44) corresponding to the plug-in page (451).

6. The environmentally friendly primary filter according to claim 5, characterized in that: A ventilation groove (6) is provided in the middle of the top frame surface (2) and the bottom frame surface (4), a cross reinforcing rib (61) is also provided in the middle of the ventilation groove (6), a tear mark (611) is provided in the middle of each side in the length direction of the reinforcing rib (61), and the tear mark (611) is provided along the width direction of each side.

7. The environmentally friendly primary filter according to claim 1, characterized in that: A plurality of first plug-in slots (711) and a plurality of second plug-in slots (712) are provided on two opposite sides in the length direction of the inner core frame (71); a plurality of the first plug-in slots (711) and the second plug-in slots (712) are arranged in an array along the width direction of the inner core frame (71); the first plug-in slots (711) and the second plug-in slots (712) are arranged alternately; the first plug-in slots (711) are arranged at the top of the inner core frame (71); the second plug-in slots (712) are arranged at the bottom of the inner core frame (71); and the depths of the first plug-in slots (711) and the second plug-in slots (712) do not exceed half the height of the inner core frame (71).

8. The environmentally friendly primary filter according to claim 7, characterized in that: The support bar (73) comprises a first support (731) and a second support (732); the first support (731) is snap-fitted to the top of the inner core frame (71) and snap-fitted to the first plug-in slot (711); the second support (732) is snap-fitted to the bottom of the inner core frame (71) and snap-fitted to the second plug-in slot (712).

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