Multi-bag expansion and contraction air dust filter

Abstract

The utility model provides a multi-bag expansion and contraction air dust filter, which relates to the technical field of mechanical manufacturing and processing, and comprises a main filter bag and a plurality of branch bags, the branch bags are uniformly distributed on the main filter bag, and each branch bag is communicated with the inside of the main filter bag. According to the technical scheme, the technical problem that how to provide as much dust filtering area as possible with as small floor area as possible by a dust filter in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical manufacturing and processing, in particular to a multi-bag expansion and contraction air and dust filter. Background Art

[0002] Filters have a long history and come in many types. Pressurized filters are commonly used before biomass briquetting, biomass gasification, and after boilers. Some are installed after the crusher to separate gas and dust from the biomass briquetting machine crushed materials, some are installed after the crusher to remove dust from the fuel exhaust of the biomass gasification furnace, and some are installed after the boiler economizer to separate gas and ash to prevent dust from polluting the atmosphere. The existing technology has different ways to separate the above gas and dust, including single bag, multi-bag parallel, multi-layer reciprocating, etc., which have contributed to medium filtration and gas and ash dust removal. Utility Model Content

[0003] The purpose of the utility model is to provide a multi-bag collapsible air-dust filter to solve the technical problem of how to provide as much dust filtering area as possible with as small a footprint as possible in the prior art. The preferred technical solution among the many technical solutions provided by the utility model can produce many technical effects as described below.

[0004] To achieve the above objectives, the utility model provides a multi-bag expandable air-dust filter, including a main filter bag and a plurality of branch bags, wherein the branch bags are evenly distributed on the main filter bag, and each branch bag is connected to the interior of the main filter bag.

[0005] Optionally, a feed pipe is provided on the top of the main filter bag, and a first valve is provided on the feed pipe.

[0006] Optionally, the main filter bag is configured to be bulb-shaped, and the branch bag is configured to be cylindrical.

[0007] Optionally, a dust bag is further included, wherein the dust bag is connected to the lower end of the main filter bag, and a second valve is provided between the main filter bag and the dust bag.

[0008] Optionally, an inverted cone dust bag is connected between the second valve and the main filter bag.

[0009] Optionally, it also includes a support frame, on which a connecting tube is provided, the connecting tube includes a main bag fastening plate at the upper end and a dust bag fastening plate at the lower end, a main bag pressing flange is provided on the upper side of the main bag fastening plate, and a bag opening of a main filter bag is fixed between the main bag pressing flange and the main bag fastening plate; the dust bag is fastened to the connecting tube via the dust bag fastening plate.

[0010] Optionally, the lower end of the dust bag is connected to a discharge pipe, and a third valve is provided on the discharge pipe.

[0011] The technical solution of the utility model may have the following beneficial effects:

[0012] The utility model provides a multi-bag retractable air-dust filter, which increases the dust filtering area under limited floor space by arranging a main filter bag and connecting a plurality of branch bags on the main filter bag.

[0013] It can be seen that the multi-bag expandable air-dust filter of this solution solves the technical problem in the prior art of how the dust filter can provide as much dust filtering area as possible with as small a footprint as possible. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 This is a front view of a multi-bag expansion air-dust filter according to an embodiment of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of a multi-bag expansion air-dust filter according to an embodiment of the utility model;

[0017] Figure 3 yes Figure 1 A partial enlarged view of point Ⅰ.

[0018] In the figure: 1. Main filter bag; 2. Branch bag; 3. Feed pipe; 4. Dust bag; 5. Second valve; 6. Dust bag; 7. Third valve; 8. Support frame; 9. Connecting tube; 10. Main bag pressure flange; 11. Dust bag fastening plate; 12. Main bag fastening plate. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the utility model.

[0020] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element at the same time. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0021] like Figure 1-3 As shown:

[0022] The utility model provides a multi-bag expansion air-dust filter, comprising a main filter bag 1 and a plurality of branch bags 2, wherein the branch bags 2 are evenly distributed on the main filter bag 1, and each branch bag 2 is connected to the inside of the main filter bag 1.

[0023] Specifically, by providing a main filter bag 1 and connecting a plurality of branch bags 2 on the main filter bag 1, the dust filtering area is increased under a limited floor space. In a specific embodiment, the ratio of the surface area of ​​the main filter bag to that of all branch bags is 1:113, which increases the surface area for safe discharge of gas generated in the process of the biomass fuel pulverizer by more than 100 times.

[0024] As an optional implementation, a feed pipe 3 is provided on the top of the main filter bag 1, and a first valve is provided on the feed pipe 3. The first valve controls the opening and closing of the feed pipe to control whether the multi-bag expandable air-dust filter enters the system for operation.

[0025] As an optional implementation, the main filter bag 1 is configured to be bulb-shaped, and the branch bag 2 is configured to be cylindrical.

[0026] As an optional embodiment, a dust bag 4 is further included, and the dust bag 4 is connected to the lower end of the main filter bag 1, and a second valve 5 is provided between the main filter bag 1 and the dust bag 4. When the second valve 5 is opened, the dust in the main filter bag 1 falls into the dust bag 4, and when the dust in the dust bag 4 needs to be discharged to the outside, the second valve 5 is closed.

[0027] As an optional implementation, an inverted cone dust bag 6 is connected between the second valve 6 and the main filter bag 1. The inverted cone dust bag 6 is arranged between the main filter bag 1 and the dust collecting bag 4, and the dust in the main filter bag 1 is collected in the dust collecting bag 4.

[0028] As an optional embodiment, it also includes a support frame 8, on which a connecting tube 9 is arranged, and the connecting tube 9 includes a main bag fastening plate 12 at the upper end and a dust bag fastening plate 11 at the lower end, and a main bag pressing flange 10 is arranged on the upper side of the main bag fastening plate 12, and the bag opening of the main filter bag is fixed between the main bag pressing flange 10 and the main bag fastening plate 12; the dust bag 6 is fastened to the connecting tube through the dust bag fastening plate 11.

[0029] Specifically, the support frame 8 is located on the ground, the lower opening of the main filter bag is inserted into the main bag pressure bag flange 10, and then the lower opening edge of the main filter bag is unfolded and placed on the main bag fastening plate 12 according to the mark, so that the reserved hole of the main bag pressure bag flange, the reserved hole of the lower opening edge of the main filter bag, and the reserved hole of the main bag fastening plate are concentric, and the bolts are inserted from the main bag pressure bag flange screw holes from top to bottom, and the reserved holes of the lower opening edge of the main filter bag and the reserved holes of the main bag fastening plate are assembled and fastened with nuts, so that the main filter bag 1 is fastened and connected to the connecting cylinder 9. The large opening of the conical dust bag is inserted from bottom to top into the conical dust bag fastening plate 11 to unfold the edge, and the reserved holes are positioned with clips according to the marked reserved holes of each layer, and then the bolts are inserted from top to bottom through the conical dust bag fastening plate 11, and the nuts are assembled and fastened.

[0030] As an optional implementation, the lower end of the dust bag 4 is connected to a discharge pipe, and a third valve 7 is provided on the discharge pipe. The third valve 7 is used to control the opening and closing of the discharge pipe so as to release the dust in the dust bag 4.

[0031] According to the above description, the top of the main filter bag 1 of the multi-bag retractable gas-dust filter is connected to the gas-dust discharge pipe at the top of the gasifier gas-material separation box with a feed pipe, and the dust bag 4 is installed at the bottom of the second valve 6 at the bottom of the main filter bag 1, and the third valve 7 is installed at the bottom of the dust bag 4, which provides convenience for the operation of the equipment. During the operation of the gasifier unit, the second valve 6 at the top of the dust bag 4 is kept open, and the pulverizer at the front end of the gas-material separation box is closed instantaneously and regularly in a planned manner. When the pulverizer is closed instantaneously, the multi-bags 2 of the filter suddenly shrink, and the dust in the bag falls into the dust bag 4 along the inner wall of the bag, and then the second valve 6 at the top of the dust bag 4 is closed, and the third valve 7 at the bottom of the dust bag 4 is opened to discharge the dust into the biogas tank, realizing the comprehensive utilization of waste.

[0032] When in use, each biomass gasifier is equipped with two multi-bag shrink air-dust filters, which adopt a three-way layout. One pipe of the three-way comes from the gas-material separation box, and the other two pipes are discharged in parallel. There are elbows on both sides of the two parallel pipes. The two elbows are vertically connected to a multi-bag shrink air-dust filter feed pipe on the lower side. Each feed pipe is equipped with a control valve. The control valve controls the two multi-bag shrink air-dust filters to operate alternately, so that the gasifier is in continuous operation. During the alternating operation, when one of the multi-bag shrink air-dust filters stops running suddenly, its multi-bags suddenly shrink, and the dust in the multi-bags falls instantly by gravity. The control valve of the filter is repeatedly opened and closed, and the dust in the multi-bags falls into the dust collection bag after multiple flashes.

[0033] When the mesh of the main filter bag and the branch bag is seriously clogged, as long as they are not aged, the main filter bag can be removed and turned inside out. The main filter bag is installed on the blower output pipe, and the branch bags are placed in the sewage pool to remove dust and dry them, which saves money and is easy to operate.

[0034] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship 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 addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 according to specific circumstances.

[0036] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A multi-bag expansion air-dust filter, characterized in that: It comprises a main filter bag and a plurality of branch bags, wherein the branch bags are evenly distributed on the main filter bag, and each branch bag is connected to the interior of the main filter bag.

2. The multi-bag expansion air-dust filter according to claim 1, characterized in that: A feed pipe is arranged on the top of the main filter bag, and a first valve is arranged on the feed pipe.

3. The multi-bag expansion air-dust filter according to claim 2, characterized in that: The main filter bag is configured to be bulb-shaped, and the branch bag is configured to be cylindrical.

4. The multi-bag expansion air-dust filter according to claim 3, characterized in that: It also includes a dust bag, which is connected to the lower end of the main filter bag, and a second valve is arranged between the main filter bag and the dust bag.

5. The multi-bag expansion air-dust filter according to claim 4, characterized in that: An inverted cone dust bag is connected between the second valve and the main filter bag.

6. The multi-bag expansion air-dust filter according to claim 5, characterized in that: It also includes a support frame, on which a connecting tube is arranged, and the connecting tube includes a main bag fastening plate at the upper end and a dust bag fastening plate at the lower end, a main bag pressing flange is arranged on the upper side of the main bag fastening plate, and a bag opening of a main filter bag is fixed between the main bag pressing flange and the main bag fastening plate; the dust bag is fastened to the connecting tube via the dust bag fastening plate.

7. The multi-bag expansion air-dust filter according to claim 6, characterized in that: The lower end of the dust collecting bag is connected to a discharge pipe, and a third valve is arranged on the discharge pipe.

Images