A bag air filter

Abstract

The present invention provides a bag-type air filter, comprising an outer frame, a filter bag and a pressing frame; the outer frame comprises a filter basket flange provided with a filter basket support and a filter basket connected to the filter basket flange at one end; the filter basket is a grid support frame structure; the filter bag comprises a filter bag flange fitted with the filter basket flange and a filter bag connected to the filter bag flange and located in the filter frame; the pressing frame comprises a sealing flange fitted with the filter bag flange and a sealing support provided in the sealing flange; the sealing flange, the filter bag flange and the filter basket flange are detachably and sealedly connected. The bag-type air filter of the present invention has the advantages of reasonable structure, convenient disassembly and assembly, only the filter bag needs to be replaced, and the remaining components can be reused, which effectively reduces the production cost and transportation cost.

Description

Technical Field

[0001] The invention belongs to the technical field of air filtration, and in particular relates to a bag type air filter. Background Art

[0002] With the continuous development of the world economy, the demand and reliance on air filters in various environmental spaces are increasing. In the process of using countless air filters, a lot of money needs to be spent on their purchase, logistics, equipment operation, waste disposal and other links. Repeated consumption is costly, and a large amount of waste disposal is also contrary to our advocacy of environmental protection, energy conservation and emission reduction.

[0003] In this case, it is very meaningful and valuable to develop an environmentally friendly air filter that can reduce operating costs, improve filtering performance, and help save energy and reduce emissions.

[0004] The primary and medium-efficiency bag filters currently on the market are made of filter materials into several single-piece bags, which are then fixed together on a small frame to form a bag filter; when in use, the small frame is stuck on the mounting frame to fix and support the entire filter bag, and at the same time seal with the mounting frame, so that the air passes through the filter material to achieve the purpose of filtration (such as Figure 1 As shown), this structure has the following problems: 1. The frame is disposable and cannot be reused, which increases the production cost; 2. Multiple single-piece bags need to be installed one by one, with many processing procedures and high labor costs; 3. The filter bag needs to be packaged and transported after overall installation, which has a large packaging volume and increases logistics costs; 4. The filter bag lacks support and has an unstable shape. The air outlet surface is fitted, which reduces the use area, increases resistance, and reduces the use cycle, while affecting the filtration efficiency, thereby increasing the energy consumption of the equipment; 5. Both the filter bag and the frame need to be replaced during replacement, which increases the amount of waste, causes waste of resources, and increases the cost of waste treatment. Summary of the invention

[0005] In view of this, the present invention aims to propose a bag air filter with reasonable structure, convenient disassembly and assembly, only the filter bag needs to be replaced, and the other parts can be reused, which effectively reduces the production cost and transportation cost and has high filtration efficiency, so as to solve the above problems.

[0006] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0007] A bag air filter, comprising:

[0008] An outer frame, the outer frame comprising a filter basket flange and a filter basket; a plurality of vertical filter basket supports are arranged in parallel in the filter basket flange, and the plurality of filter basket supports divide the filter basket flange into a plurality of air inlets; the number of the filter baskets is the same as the number of the air inlets, and are arranged one-to-one with the air inlets; the filter basket is a grid support frame structure, and the inlet end of the filter basket is butted against the air inlet;

[0009] A filter bag, the filter bag comprising a filter bag flange and a plurality of filter bags connected to the filter bag flange and arranged in parallel; the number of the filter bags is the same as the filter basket, and they are arranged one by one, and the filter bags are inserted into the corresponding filter baskets; the filter bag flange is correspondingly fitted with the filter basket flange;

[0010] A pressing frame, the pressing frame includes a sealing flange and a plurality of vertical sealing supports arranged in parallel in the sealing flange, the sealing supports are arranged in a one-to-one correspondence with the filter basket supports, and the sealing flange is fitted with the filter bag flange; the sealing flange, the filter bag flange and the filter basket flange are detachably sealed and connected.

[0011] Furthermore, the sealing flange, the filter bag flange and the filter basket flange are all rectangular frame structures; and the transverse cross-section of the filter basket is a triangle.

[0012] Furthermore, the sealing support is provided with a plurality of filter bag opening fixing buckles, and the end of the filter basket away from its inlet end is provided with a plurality of filter bag bottom fixing buckles.

[0013] Furthermore, the sealing flange, the filter bag flange and the filter basket flange are detachably connected by means of snap-locking through slots.

[0014] Furthermore, a slot seat is provided on the filter basket flange, and a press-type buckle portion is connected to one side of the slot seat; the filter bag flange and the sealing flange can be installed in the slot seat and fixed to the filter basket flange by snapping with the press-type buckle portion.

[0015] Furthermore, a protruding abutting portion is provided in the slot seat, and both the filter bag flange and the sealing flange are provided with a groove portion matching the protruding abutting portion, and the press-type buckling portion is buckled on the sealing flange.

[0016] Furthermore, sealing strips are provided between the sealing flange, the filter bag flange and the filter basket flange.

[0017] Compared with the prior art, the bag air filter of the present invention has the following advantages:

[0018] (1) The bag air filter described in the present invention has a reasonable structural design. The metal frame or plastic frame used on each traditional filter bag is eliminated and replaced with a recyclable filter basket. When the filter reaches the end of its service life, only the filter bag is replaced. Except for the filter bag, all other parts can be reused, which effectively reduces production costs, reduces the amount of waste, and reduces waste disposal costs. Through the combination of the outer frame, filter bag, and press frame, it is easy to disassemble and assemble, reducing the cost of manual assembly. Moreover, it only needs to be transported as a whole during the first transportation. After that, only the filter bag to be replaced needs to be transported, avoiding the problems of each overall transportation of the traditional structure, large packaging volume, and high transportation cost, effectively reducing transportation costs; achieving cost reductions in each link of production costs, waste disposal costs, manual assembly costs, and transportation costs;

[0019] (2) The bag-type air filter described in the present invention is provided with a filter basket, and the filter bag is arranged in the filter frame. The bag shape of the filter bag is stretched and stable, and the air outlet surfaces of adjacent filter bags are not attached. The use efficiency and performance parameters of the filter bag are greatly improved (increasing the dust holding capacity and reducing the resistance), and the final pressure value and bursting pressure of the filter bag can be greatly increased, thereby improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0021] Figure 1 It is a schematic diagram of the structure of the filter in the prior art described in the background technology of the present invention;

[0022] Figure 2 This is a schematic diagram of assembling a bag air filter according to an embodiment of the present invention;

[0023] Figure 3 It is a structural schematic diagram of the outer frame according to an embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram of the structure of the filter bag according to an embodiment of the present invention;

[0025] Figure 5 It is a structural schematic diagram of the pressing frame according to an embodiment of the present invention;

[0026] Figure 6 It is a schematic cross-sectional assembly diagram of the outer frame, filter bag and pressure frame described in an embodiment of the present invention.

[0027] Description of reference numerals:

[0028] 1-outer frame; 11-filter basket flange; 111-slot seat; 112-protruding abutment portion; 113-press-type buckle portion; 12-filter basket; 13-filter basket support; 14-air inlet; 15-filter bag bottom fixing buckle;

[0029] 2-filter bag; 21-filter bag flange; 22-filter bag;

[0030] 3-pressing frame; 31-sealing flange; 32-sealing support; 33-filter bag opening fixing buckle;

[0031] 4- Groove portion. DETAILED DESCRIPTION

[0032] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0033] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 limiting the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0034] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0035] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0036] like Figure 2 As shown, a bag air filter comprises: an outer frame 1, a filter bag 2 and a pressing frame 3;

[0037] Among them, Figure 3As shown, the outer frame 1 includes a filter basket flange 11 and a filter basket 12; the filter basket flange 11 is a rectangular frame structure, and a plurality of vertical filter basket supports 13 are arranged in parallel in the filter basket flange 12, and the plurality of filter basket supports 13 divide the filter basket flange 11 into a plurality of air inlets 14; the number of filter baskets 12 is the same as the number of air inlets 14, and they are arranged one by one corresponding to the air inlets 14, the filter basket 12 is a grid support frame structure, the transverse cross-section of the filter basket 12 is a triangle, the inlet end of the filter basket 12 is connected to the air inlet 14, and the end of the filter basket 12 away from the inlet end thereof is provided with a plurality of filter bag bottom fixing buckles 15;

[0038] like Figure 4 As shown, the filter bag 2 includes a filter bag flange 21 and a plurality of filter bags 22 connected to the filter bag flange 21 and arranged in parallel; the number of the filter bags 22 is the same as the filter basket 12, and they are arranged one by one, the filter bag 22 is inserted into the corresponding filter basket 12, and the bottom of the filter bag 22 is fixed by the filter bag bottom fixing buckle 15; the filter bag flange 21 is a rectangular frame structure, and the filter bag flange 21 is correspondingly fitted with the filter basket flange 11;

[0039] like Figure 5 As shown, the pressing frame 3 includes a sealing flange 31 and a plurality of vertical sealing supports 32 arranged in parallel in the sealing flange 31; the sealing supports 32 are arranged in a one-to-one correspondence with the filter basket supports 13, and a plurality of filter bag opening fixing buckles 33 are arranged on the sealing supports 32, which are used to fix the filter bag 22 opening to the sealing supports 32 and the filter basket supports 13, so that the filter bag 22 is stably installed in the filter basket 12; the sealing flange 31 is a rectangular frame structure, and the sealing flange 31 fits the filter bag flange 21;

[0040] like Figure 6 As shown, the sealing flange 31, the filter bag flange 21 and the filter basket flange 11 are detachably sealed and connected by means of a slot buckle locking method, and sealing strips are provided between the sealing flange 31, the filter bag flange 21 and the filter basket flange 11; a slot seat 111 is provided on the filter basket flange 11, a protruding abutting portion 112 is provided in the slot seat 111, and a press-type buckling portion 113 is connected to one side of the slot seat 111; the filter bag flange 21 and the sealing flange 31 are installed in the slot seat 111, and are both provided with a groove portion 4 matching the protruding abutting portion 112; the press-type buckling portion 113 is buckled with the sealing flange 31, and the sealing flange 31, the filter bag flange 21 and the filter basket flange 11 are locked and fixed by the buckling method of the press-type buckling portion 113, thereby realizing the connection and fixation of the outer frame 1, the filter bag 2 and the pressure frame 3.

[0041] When the bag-type air filter described in the present invention needs to replace the filter bag 2, open the push-type buckle 113, open the filter bag opening fixing buckle 33 and the filter bag bottom fixing buckle 15, remove the pressing frame 3, and take out the old filter bag from the outer frame 1; match the filter bag 22 of the new filter bag to each filter basket 12, push it into the filter basket 12, and connect the bottom of the filter bag 22 with the filter bag bottom fixing buckle 15; push the filter bag flange 21 into the filter basket flange 11, and then press the sealing flange 31 onto the filter bag flange 21, buckle the push-type buckle 113, and the outer frame 1, filter bag 2 and pressing frame 3 are assembled.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A bag air filter, characterized in that: include: An outer frame, the outer frame comprising a filter basket flange and a filter basket; a plurality of vertical filter basket supports are arranged in parallel in the filter basket flange, and the plurality of filter basket supports divide the filter basket flange into a plurality of air inlets; the number of the filter baskets is the same as the number of the air inlets, and are arranged one-to-one with the air inlets; the filter basket is a grid support frame structure, and the inlet end of the filter basket is butted against the air inlet; A filter bag, the filter bag comprising a filter bag flange and a plurality of filter bags connected to the filter bag flange and arranged in parallel; the number of the filter bags is the same as the filter basket, and they are arranged one by one, and the filter bags are inserted into the corresponding filter baskets; the filter bag flange is correspondingly fitted with the filter basket flange; A pressing frame, the pressing frame comprises a sealing flange and a plurality of vertical sealing supports arranged in parallel in the sealing flange, the sealing supports are arranged in one-to-one correspondence with the filter basket supports, the sealing flange is fitted with the filter bag flange; the sealing flange, the filter bag flange and the filter basket flange are detachably sealed and connected; The sealing flange, the filter bag flange and the filter basket flange are all rectangular frame structures; the transverse cross section of the filter basket is a triangle; The sealing support is provided with a plurality of filter bag opening fixing buckles, and the filter basket is provided with a plurality of filter bag bottom fixing buckles at one end away from the inlet end thereof; The sealing flange, the filter bag flange and the filter basket flange are detachably connected by means of a slot snap-on locking method; a slot seat is provided on the filter basket flange, and a press-on snap-on portion is connected to one side of the slot seat; the filter bag flange and the sealing flange are installed in the slot seat and are fixed to the filter basket flange by means of the press-on snap-on portion; a protruding abutting portion is provided in the slot seat, and the filter bag flange and the sealing flange are both provided with a groove portion matching the protruding abutting portion, and the press-on snap-on portion is snap-on to the sealing flange.

2. The bag air filter according to claim 1, characterized in that: Sealing strips are arranged between the sealing flange, the filter bag flange and the filter basket flange.

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