Metal powder net composite filter bag for high-temperature dust removal

Abstract

The utility model discloses a metal powder net composite filter bag for high-temperature dust removal, which belongs to the technical field of high-temperature dusty gas purification, and adopts the technical scheme that the metal powder net composite filter bag comprises a composite filter bag main body and a mounting framework, the composite filter bag main body is sleeved on the surface of the mounting framework, and the composite filter bag main body comprises a base material layer, a filtering layer is arranged on the surface of the base material layer, the top of the surface of the base material layer is sleeved with a flange plate, and the flange plate is used in cooperation with the mounting framework; the base material layer is a main body layer, so that the problems that the service life of the conventional filter bag is relatively short, the conventional filter bag is abraded due to the erosion of smoke temperature, corrosive substances and the like and the impact of large-particle dust during filtration, and the dust is easily polluted are solved; and the problem that the dust removal effect is affected due to the fact that the flue gas cannot meet the requirement of ultralow particulate matter emission caused by damage or overall failure of a conventional filter bag is aggravated.

Description

Technical Field

[0001] The utility model relates to the technical field of high-temperature dust-containing gas purification, in particular to a metal powder mesh composite filter bag for high-temperature dust removal. Background Art

[0002] In modern industrial production processes, the fields involving direct purification and dust removal of dust-containing gases at high temperatures are very extensive. The key to high-temperature gas dust removal is to directly achieve gas-solid separation of dust-containing gases at high temperatures. With the current development of major technologies such as clean energy conversion, efficient energy utilization and environmental purification, the demand for high-temperature filter materials and technologies has exploded in recent years.

[0003] The existing high-temperature dust-containing gas filter bags are mainly made of textiles, cellulose or other materials. The service life of conventional filter bags is relatively low. They are eroded by smoke temperature, corrosive substances, etc., and the impact of large dust particles during filtration causes them to wear, which further aggravates the damage or overall failure of conventional filter bags, resulting in the flue gas being unable to meet the requirements of ultra-low particulate matter emissions, affecting its usability.

[0004] To this end, we propose a metal powder mesh composite filter bag for high-temperature dust removal. Utility Model Content

[0005] The purpose of the utility model is to provide a metal powder mesh composite filter bag for high-temperature dust removal, aiming to solve the problem that the existing high-temperature dust-containing gas filter bags are mainly made of textiles, cellulose or other materials, the service life of conventional filter bags is relatively low, and they are worn due to erosion by smoke temperature, corrosive substances, etc. and the impact of large dust particles during filtration, which further aggravates the breakage or overall failure of the conventional filter bags, resulting in the smoke being unable to meet the requirements of ultra-low particulate matter emissions, thereby affecting the dust removal effect.

[0006] The utility model is implemented as follows: a metal powder mesh composite filter bag for high-temperature dust removal comprises a composite filter bag body and a mounting frame, wherein the composite filter bag body is sleeved on the surface of the mounting frame, the composite filter bag body comprises a substrate layer, a filter layer is arranged on the surface of the substrate layer, and a flange is sleeved on the top of the substrate layer surface, and the flange is used in conjunction with the mounting frame;

[0007] The substrate layer is a main body layer, the inner wall and surface of the main body layer are both provided with a reinforcement layer, and the inner wall and surface of the reinforcement layer are both provided with a protective layer;

[0008] The filter layer comprises a primary filter material layer and a secondary filter material layer. The secondary filter material layer is arranged on the surface of the substrate layer, and the primary filter material layer is arranged on the surface of the secondary filter material layer.

[0009] In order to achieve the effect of connecting the composite filter bag body with the mounting frame, as a preferred metal powder mesh composite filter bag for high-temperature dust removal of the utility model, the top of the flange is annularly fixed with several protrusions, and the top of the protrusion extends to the interior of the mounting frame.

[0010] In order to facilitate the installation of the composite filter bag main body and the mounting frame, as a preferred metal powder mesh composite filter bag for high-temperature dust removal of the utility model, the top of the interior of the mounting frame is provided with a plurality of connecting holes in the shape of a ring for use with the protrusions, and the top of the interior of the mounting frame is provided with a plurality of mounting holes in the shape of a ring, and the mounting holes are consistent with the hole positions of the flange.

[0011] In order to ensure the stability of the main structure of the composite filter bag, a metal powder mesh composite filter bag for high-temperature dust removal is preferably used in the utility model. The main layer is composed of a metal plate mesh, and the reinforcement layer and the protective layer are both composed of a metal wire mesh woven with precision metal wires.

[0012] In order to achieve the effect of ensuring the filtering performance, as a preferred metal powder mesh composite filter bag for high-temperature dust removal of the utility model, the mesh diameters of the protective layer and the reinforcement layer are 10-50um and 80-120um respectively.

[0013] In order to achieve the filtering effect, as a preferred metal powder mesh composite filter bag for high-temperature dust removal of the utility model, the secondary filter material layer is composed of metal fiber sintered felt and is coated on the side close to the protective layer.

[0014] In order to achieve the effect of enhancing the filter's tolerance to the filtering temperature, as a preferred metal powder mesh composite filter bag for high-temperature dust removal of the utility model, the primary filter material is composed of a sintered metal powder film layer and is arranged on the surface of the secondary filter material layer.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The metal powder mesh composite filter bag for high-temperature dust removal adopts a sintered metal powder film layer to form a primary filter material layer and a filter layer with a secondary filter material layer, so that the composite filter bag body can withstand a relatively high working temperature, is not easily affected by corrosive substances and has good wear resistance, which can ensure the service life of the composite filter bag body and is durable. At the same time, the base material layer composed of the main layer, the reinforcement layer and the protective layer makes the size and filtering capacity of the composite filter bag body stable, and has good air permeability while ensuring the filtering accuracy. Therefore, it can replace conventional textile filter bags and has a good filtering and dust removal effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1This is the overall structure diagram of the metal powder mesh composite filter bag for high temperature dust removal of the utility model;

[0018] Figure 2 It is a schematic diagram of the connection between the composite filter bag body and the mounting frame in the utility model;

[0019] Figure 3 It is a schematic diagram of the local structural connection of the composite filter bag body in the utility model;

[0020] Figure 4 It is a schematic diagram of the decomposition of the substrate layer in the utility model;

[0021] Figure 5 It is an exploded schematic diagram of the filter layer in the utility model.

[0022] In the figure, 1. composite filter bag body; 11. substrate layer; 111. main body layer; 112. reinforcement layer; 113. protective layer; 12. filter layer; 121. primary filter material layer; 122. secondary filter material layer; 13. flange; 2. mounting frame; 3. protrusion; 4. connection hole; 5. mounting hole. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0024] In the description of the present invention, it should be understood that the terms "length", "width", "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 accompanying 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 a limitation on the present invention. In addition, in the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0025] See also Figure 1-5 The utility model provides a technical solution: a metal powder mesh composite filter bag for high-temperature dust removal, comprising a composite filter bag body 1 and a mounting frame 2, the composite filter bag body 1 is sleeved on the surface of the mounting frame 2, the composite filter bag body 1 comprises a substrate layer 11, a filter layer 12 is arranged on the surface of the substrate layer 11, and a flange 13 is sleeved on the top of the surface of the substrate layer 11, and the flange 13 is used in conjunction with the mounting frame 2;

[0026] The substrate layer 11 is a main body layer 111, the inner wall and surface of the main body layer 111 are both provided with a reinforcing layer 112, and the inner wall and surface of the reinforcing layer 112 are both provided with a protective layer 113;

[0027] The filter layer 12 includes a primary filter material layer 121 and a secondary filter material layer 122 . The secondary filter material layer 122 is disposed on the surface of the substrate layer 11 , and the primary filter material layer 121 is disposed on the surface of the secondary filter material layer 122 .

[0028] In this embodiment: by using a sintered metal powder film layer to form a primary filter material layer 121 and a secondary filter material layer 122 to form a filter layer 12, the composite filter bag body 1 can withstand a relatively high operating temperature, is not easily affected by corrosive substances, and has good wear resistance, which can ensure the service life of the composite filter bag body 1 and is durable. At the same time, through the base material layer 11 composed of the main layer 111, the reinforcement layer 112 and the protective layer 113, the size and filtering capacity of the composite filter bag body 1 are stable, and while ensuring the filtering accuracy, it has good air permeability. Therefore, it can replace conventional textile filter bags and has a good filtering and dust removal effect.

[0029] As a technical optimization solution of the present invention, a plurality of protrusions 3 are fixedly connected to the top of the flange 13 in an annular shape, and the tops of the protrusions 3 extend to the inside of the mounting frame 2 .

[0030] In this embodiment, the protrusion 3 is provided to facilitate the positioning connection between the flange 13 and the installation frame 2, thereby facilitating the installation of the composite filter bag body 1.

[0031] As a technical optimization solution of the utility model, a plurality of connecting holes 4 for use with the protrusions 3 are opened in a ring shape at the top of the interior of the installation skeleton 2, and a plurality of mounting holes 5 are opened in a ring shape at the top of the interior of the installation skeleton 2, and the mounting holes 5 are consistent with the hole positions of the flange 13.

[0032] In this embodiment: by providing the connection hole 4, the connection work between the protrusion 3 and the mounting frame 2 can be achieved, and by providing the mounting hole 5, it is convenient to use a screw structure to pass through the mounting frame 2 and the flange 13 to install the composite filter bag body 1 in the use position.

[0033] As a technical optimization solution of the present invention, the main body layer 111 is composed of a metal plate mesh, and the reinforcement layer 112 and the protection layer 113 are both composed of a metal wire mesh woven with precision metal wires.

[0034] In this embodiment: the base material layer 11 is composed of a main layer 111 composed of a metal plate mesh, a reinforcement layer 112 composed of a metal wire mesh woven with precision metal wires, and a protective layer 113. The size and filtering capacity of the composite filter bag body 1 are stable, and the overall strength is good. It can also have good air permeability while ensuring the filtering accuracy. Therefore, it can be used instead of conventional textile filter bags and has a good filtering and dust removal effect.

[0035] As a technical optimization solution of the present invention, the mesh diameters of the protective layer 113 and the reinforcing layer 112 are 10-50 um and 80-120 um respectively.

[0036] In this embodiment, the mesh diameters of the protective layer 113 and the reinforcing layer 112 are set to 10-50 um and 80-120 um respectively, so as to ensure the filtering performance.

[0037] As a technical optimization solution of the present invention, the secondary filter material layer 122 is made of metal fiber sintered felt and is coated on a side close to the protective layer 113 .

[0038] In this embodiment, by setting the secondary filter material layer 122 to be composed of metal fiber sintered felt, it can achieve the effect of multiple filtration when used in conjunction with the primary filter material layer 121, thereby further enhancing the filtration performance.

[0039] As a technical optimization solution of the present invention, the primary filter material is composed of a sintered metal powder film layer and is arranged on the surface of the secondary filter material layer 122 .

[0040] In this embodiment: by setting the primary filter material to be composed of a sintered metal powder film layer, the composite filter bag body 1 can withstand a higher operating temperature, is not easily affected by corrosive substances and has good wear resistance, which can ensure the service life of the composite filter bag body 1 and is durable, thereby meeting the requirements of ultra-low particulate matter emissions.

[0041] Working principle: First, the composite filter bag body 1 is mounted on the surface of the mounting frame 2, and the protrusion 3 is inserted into the connecting hole 4 to connect the two. Then, the composite filter bag body 1 is passed downward through the through hole preset at the mounting position, so that the flange 13 is located on the through hole at the mounting position, and the hole position of the flange 13 is consistent with the hole position of the mounting position. Finally, screws are used to pass through the mounting frame 2 and the flange 13 at one time to fix them to the mounting position, thereby fixing the composite filter bag body 1 at the use position. The composite filter bag body 1 is formed by using a sintered metal powder film layer to form a primary filter material layer 121 and is connected to the secondary filter material layer 122. The secondary filter material layer 122 forms the filter layer 12, so that the composite filter bag body 1 can withstand a relatively high operating temperature, is not easily affected by corrosive substances, and has good wear resistance, which can ensure the service life of the composite filter bag body 1 and is durable. At the same time, the base material layer 11 composed of the main layer 111, the reinforcement layer 112 and the protective layer 113 makes the size and filtering capacity of the composite filter bag body 1 stable, and has good air permeability while ensuring the filtering accuracy. Therefore, it can replace conventional textile filter bags and has a good filtering and dust removal effect.

[0042] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A metal powder mesh composite filter bag for high temperature dust removal, comprising a composite filter bag body (1) and a mounting frame (2), characterized in that: The composite filter bag body (1) is sleeved on the surface of the mounting frame (2), the composite filter bag body (1) comprises a substrate layer (11), a filter layer (12) is arranged on the surface of the substrate layer (11), and a flange (13) is sleeved on the top of the surface of the substrate layer (11), and the flange (13) is used in conjunction with the mounting frame (2); The base material layer (11) is a main body layer (111), the inner wall and the surface of the main body layer (111) are both provided with a reinforcement layer (112), and the inner wall and the surface of the reinforcement layer (112) are both provided with a protective layer (113); The filter layer (12) comprises a primary filter material layer (121) and a secondary filter material layer (122); the secondary filter material layer (122) is arranged on the surface of the substrate layer (11), and the primary filter material layer (121) is arranged on the surface of the secondary filter material layer (122).

2. The metal powder mesh composite filter bag for high temperature dust removal according to claim 1, characterized in that: The top of the flange (13) is annularly fixedly connected to a plurality of protrusions (3), and the tops of the protrusions (3) extend to the inside of the mounting frame (2).

3. The metal powder mesh composite filter bag for high temperature dust removal according to claim 2, characterized in that: The top of the interior of the installation frame (2) is provided with a plurality of connection holes (4) in the shape of a ring for use with the protrusion (3), and the top of the interior of the installation frame (2) is provided with a plurality of installation holes (5) in the shape of a ring, and the positions of the installation holes (5) and the holes of the flange (13) are consistent.

4. The metal powder mesh composite filter bag for high temperature dust removal according to claim 1, characterized in that: The main body layer (111) is made of metal plate mesh, and the reinforcement layer (112) and the protective layer (113) are both made of metal wire mesh woven with precision metal wires.

5. The metal powder mesh composite filter bag for high temperature dust removal according to claim 1, characterized in that: The mesh diameters of the protective layer (113) and the reinforcing layer (112) are 10-50 um and 80-120 um respectively.

6. The metal powder mesh composite filter bag for high temperature dust removal according to claim 1, characterized in that: The secondary filter material layer (122) is made of metal fiber sintered felt and is coated on a side close to the protective layer (113).

7. The metal powder mesh composite filter bag for high temperature dust removal according to claim 1, characterized in that: The primary filter material is composed of a sintered metal powder film layer and is arranged on the surface of the secondary filter material layer (122).

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