CN217287618U

CN217287618U - Coating air current filter equipment

Info

Publication number: CN217287618U
Application number: CN202220103136.5U
Authority: CN
Inventors: 郭雪松
Original assignee: Qinshan Filtration System Suzhou Co ltd
Current assignee: Qinshan Filtration System Suzhou Co ltd
Priority date: 2022-01-14
Filing date: 2022-01-14
Publication date: 2022-08-26
Anticipated expiration: 2032-01-14

Abstract

The utility model belongs to industry coating field specifically is a coating air current filter equipment, which comprises a housin, the first filter of a plurality of radial settings of having arranged on the axis direction of following the casing on the inside wall of casing, the one end of first filter and the inside wall fixed connection of casing, the other end is the free end, the axis direction along the casing on the inside wall of casing radially is equipped with a plurality of second filters between two adjacent first filters, the projection of second filter on the cross section of casing surrounds the projection of first clearance on the cross section of casing that the inside wall of first filter and casing constitutes, form the second clearance on the second filter between the inside wall of two lateral walls and casing at least, it only has half of casing to lead to the fact the not big problem of volume of lacquer to have solved the coating air current filter equipment interior coating air current accommodation space.

Description

Coating air current filter equipment

Technical Field

The invention belongs to the field of industrial coating, and particularly relates to a coating airflow filtering device.

Background

CN 108355425B discloses a filter module for an industrial coating system. The filtration module has a housing formed by a peripheral wall extending around a periphery. A support backplate is mounted within the housing with openings formed therethrough so that gas can flow through without significant resistance. The preferred planar sheet from which the support backing is made is pleated. The corrugated finished back plate defines a series of plate members, each of which is angled with respect to the next adjacent plate member. The filter media is mounted to a support back plate, end caps are attached to the ends of the support back plate to maintain the pleated configuration, and the assembly is inserted into a housing.

The filter modules of different pleated types have similar internal structural components, and the filter medium is folded and inserted into the housing in a pleated manner, and the two ends of the filter medium are tightly attached to the housing, so that the housing forms a raw gas side and a clean gas side in the through-flow direction. The filter medium is a paper mat or a random fiber mat with a three-dimensional structure, the effective surface of the filter module is limited and enlarged, the structure perfectly divides the shell into two parts, but the effective paint overspray accommodating space is only half of the shell.

CN111836674A discloses an inertial separation module for inertial separation of components contained in a flowing fluid, in particular paint particles or paint aggregates. The inertial separation module is generally made up of one or more simply shaped cavities, typically of metal, plastic and cardboard, which are arranged in the air flow to form a flow labyrinth.

The inertial filtration is only suitable for impurities with large mass and viscosity, and the application range is narrow.

Disclosure of Invention

The invention aims to overcome the defects of the prior art, designs a coating airflow filtering device by adopting a mode of arranging a first filtering plate and a second filtering plate in a shell in a staggered manner, and solves the problem that the coating airflow accommodating space in the existing industrial airflow filtering device is only half of the shell, so that the paint accommodating amount is not large.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides a coating air current filter equipment, includes the casing, follow on the inside wall of casing the first filter of a plurality of radial settings of having arranged in the axis direction of casing, the one end of first filter with the inside wall fixed connection of casing, the other end are the free end, the axis direction of following the casing on the inside wall of casing is two adjacent radially be equipped with a plurality of second filters between the first filter, the second filter is in projection on the cross section of casing surrounds first filter with the projection of first clearance on the cross section of casing that the inside wall of casing constitutes, the second filter is in projection on the cross section of casing with be formed with the second clearance between the inside wall of casing, first filter is in projection on the cross section of casing surrounds the second clearance.

Preferably, the filter holes of the first filter plate and the second filter plate decrease gradually from one end to the other end along the axis of the housing.

Preferably, the distance between two adjacent first filter plates and the distance between two adjacent second filter plates gradually decrease from large to small from the largest end of the filter hole along the axis of the shell in the shell.

Preferably, a filter screen is arranged at the end with the smallest filter hole in the shell along the axis direction of the shell, the periphery of the filter screen is hermetically connected with the side wall of the shell, and the meshes of the filter screen are smaller than the filter holes in the first filter plate or the second filter plate adjacent to the filter screen.

Preferably, the distance between the first filter plate and the first second filter plate is 3-5 cm, and the distance between the last first filter plate and the first second filter plate is 1 cm, starting from the end with the largest filter hole along the axis of the shell.

Preferably, there are at least two said first filter plates within said housing on the same cross-section of said housing.

Preferably, the ratio of the distance between the first filter plate and the second filter plate to the size of the first gap is 1: 1/2 to 1: 2.

Preferably, the first filter plate and the second filter plate are fixedly connected with the shell in an inserting manner.

Preferably, the area of the projection of the first filter plate on the same cross section on the cross section of the housing accounts for 50% -90% of the area of the inner cross section of the housing, and the area of the projection of the second filter plate on the same cross section on the cross section of the housing accounts for 50% -90% of the area of the inner cross section of the housing.

Compared with the prior art, the invention has the beneficial effects that:

1. the invention designs a coating airflow filter device by adopting a mode of arranging a first filter plate and a second filter plate in a shell in a staggered manner, and solves the problem that the coating airflow accommodating space in the existing industrial airflow filter device is only half of the shell, so that the paint accommodating amount is not large.

2. The special filtering form of the filter plate type filtering device ensures that the inner space of the whole shell is the raw material gas side, and the outer side of one end of the shell with small filtering holes is the clean gas side. Such a structure improves the effective air overspray containment space by half, and the containment capacity of the filter media paint overspray using the same area is doubled. In addition, in the using process, the filter medium of the front end filter plate (including the first filter plate and the second filter plate) is slowly blocked, the coating air flow flows into the shell along the first gap and the second gap, the blocked filter plate becomes an impact surface of the inertia separation module, spray objects (impurities, hereinafter collectively referred to as spray objects) in the coating air flow are captured by inertia impact, at the moment, the front end of the whole filter device separates the coating air flow with large viscous large particles by using the inertia separation principle, and the rear end still filters the air flow spray objects with small viscous small particles by using the filter principle. The surface of the impact surface of the traditional inertia separation module is a plane structure, irregular paint slag and paper screen structures are arranged on the surface of the filter plate blocked by the sprayed objects in the coated air flow, and the possibility of being captured is greatly increased when the air flow sprayed objects impact the filter plate. Meanwhile, because the third gap is larger than the distance between the first filter plate and the second filter plate, impurities are continuously accelerated and decelerated in the process that spray objects in the coating air flow pass through the inner channel of the shell, and the blocked filter plates and the shell are captured.

The optimum result is that the filter medium of all filter panels is blocked by accommodating a large amount of spray of coating gas flow in the filter medium using the filter principle, in which case the filter module becomes an inertial separation module. The filter medium contains a sufficient spray of coating gas,

the distance between the first filter plate and the second filter plate is large enough to accommodate a large amount of paint overspray while the air volume in the casing is still large.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a cross-sectional view a-a of fig. 1.

Wherein, 1, a shell; 2. a first filter plate; 3. a second filter plate; 4. a first gap; 5. A second gap; 6. filtering holes; 7. a filter screen; 8. and (4) meshes.

Detailed Description

Referring to fig. 1-2, a coated gas stream filtering device comprises a housing 1, a plurality of first filter plates 2 arranged radially are arranged on the inner side wall of the housing 1 along the axial direction of the housing 1, one end of the first filter plate 2 is fixedly connected with the inner side wall of the shell 1, the other end is a free end, a plurality of second filter plates 3 are radially arranged between two adjacent first filter plates along the axial direction of the shell 1 on the inner side wall of the shell 1, the projection of the second filter plate 3 on the cross section of the shell 1 surrounds the projection of the first gap 4 formed by the first filter plate 2 and the inner side wall of the shell 1 on the cross section of the shell 1, a second gap 5 is formed between the projection of the second filter plate 3 on the cross section of the housing 1 and the inner side wall of the housing 1, the projection of the first filter plate 2 onto the cross section of the housing 1 encloses the second gap 5.

In this embodiment, the cross section of the casing 1 may be circular, rectangular, irregular shape, etc., and a clamping groove is formed on the bottom surface and the top surface inside the casing 1 in the axial direction of the casing 1 by a stamping process, the filter plates (including the first filter plate and the second filter plate) are fixedly arranged in the casing 1 through slots, 5 to 10 filter plates may be radially arranged in the casing 1 along the axial direction of the casing 1, and the filter plates are made into a mesh shape or a grid shape, so that the ventilation amount is increased to the maximum extent. The filter plate is made of rigid material, and can be made of paper boards, plastics, wooden frames and the like. The filter plates can also be provided with filter media, the filter media are paper pads or irregular fiber pads with three-dimensional structures, and further can be formed by overlapping paper nets, and the filter media on each filter plate can be the same paper net along the axial direction of the shell 1; the filter plates consisting of paper nets with different filter hole sizes are respectively arranged from large to small along the airflow direction, the last layer can be a filter net 7, and the aperture of a mesh 8 on the filter net 7 is smaller than that of the filter hole 6. The special paint is characterized in that the filter media of the first three filter plates are made of grid materials formed by overlapping a plurality of corrugated boards, gaps are formed between every two layers of corrugated boards, and after the grid materials are arranged, the corrugated boards can manufacture large grids, the corrugated boards are made to be more three-dimensional and fluffy, so that the paint is adsorbed on the corrugated boards when passing through the filter media formed by the corrugated boards, meanwhile, the first three filter plates are not easy to be blocked by impurities, the filter media can also be different paper nets, and the adsorption of paint spray objects with different viscosities or particle sizes is respectively borne, and the paint residues are absorbed to the maximum degree and cannot be blocked. Preferably, the filter medium of the last three fast baffles can be made of a mesh material made of a plastic wire mesh, and the plastic wire mesh can be made of a mesh material with the inner diameter of the mesh being 0.5-1mm, so that the intercepting efficiency of impurities is improved, and the impurities in the airflow can be captured more easily.

Preferably, the filtering holes 6 of the first filtering plate 2 and the second filtering plate 3 gradually decrease from one end to the other end along the axis of the housing 1, and respectively filter the impurities with different particle sizes in the coating air flow.

Preferably, the distance between two adjacent first filter plates 2 and second filter plates 3 in the housing 1 decreases gradually from large to small from the end with the largest filter hole 6 along the axis of the housing 1, so that a sufficiently large air flow can pass through the housing 1.

As a preferable mode, a filter screen 7 is arranged at the end of the casing where the filter holes 6 are smallest in the axial direction of the casing 1, the periphery of the filter screen 7 is hermetically connected with the side wall of the casing 1, and the meshes 8 of the filter screen 7 are smaller than the filter holes 6 of the first filter plate 2 or the second filter plate 3 adjacent to the filter screen 7.

Preferably, the distance between the first filter plate 2 and the first second filter plate 3 is 3-5 cm, and the distance between the last first filter plate 2 and the first second filter plate 3 is 1 cm, starting from the end of the casing 1 where the filter holes 6 are largest, along the axis of the casing 1.

Preferably, there are at least two first filter plates 2 in the housing 1 on the same cross-section of the housing 1.

Preferably, the ratio of the distance between the first filter plate 2 and the second filter plate 3 to the size of the first gap is 1: 1/2 to 1: 2.

Preferably, the first filter plate 2 and the second filter plate 3 are fixedly connected to the housing 1 by plugging.

Preferably, the area of the projection of the first filter plate 2 on the cross section of the housing 1 on the same cross section is 50-90% of the area of the inner cross section of the housing 1, and the area of the projection of the second filter plate 3 on the cross section of the housing 1 on the same cross section is 50-90% of the area of the inner cross section of the housing 1.

Claims

1. A coated air flow filtering device is characterized by comprising a shell (1), a plurality of first filter plates (2) which are radially arranged are distributed on the inner side wall of the shell (1) along the axis direction of the shell (1), one end of each first filter plate (2) is fixedly connected with the inner side wall of the shell (1), the other end of each first filter plate is a free end, a plurality of second filter plates (3) are radially arranged between every two adjacent first filter plates along the axis direction of the shell (1) on the inner side wall of the shell (1), the projection of each second filter plate (3) on the cross section of the shell (1) surrounds the projection of a first gap (4) formed by each first filter plate (2) and the inner side wall of the shell (1) on the cross section of the shell (1), a second gap (5) is formed between the projection of each second filter plate (3) on the cross section of the shell (1) and the inner side wall of the shell (1), the projection of the first filter plate (2) onto the cross section of the housing (1) encloses the second gap (5).

2. A coated gas filter device according to claim 1, characterized in that the filter openings (6) in the first filter plate (2) and the second filter plate (3) decrease gradually from one end to the other end along the axis of the housing (1).

3. A coated gas stream filter device according to claim 2, characterized in that the distance between two adjacent first filter plates (2) and second filter plates (3) decreases from large to small in the housing (1) starting from the end of the housing (1) where the filter openings (6) are largest along the axis of the housing.

4. A coating gas stream filter device according to claim 3, characterized in that a filter screen (7) is arranged in the housing at the end of the housing where the filter openings (6) are smallest in the axial direction of the housing (1), the periphery of the filter screen (7) is in a sealed connection with the side wall of the housing (1), and the mesh of the filter screen (7) is smaller than the filter openings (6) in the first filter plate (2) or the second filter plate (3) adjacent to the filter screen (7).

5. A coated gas filter device according to claim 3, characterized in that the distance between the first filter plate (2) and the first second filter plate (3) is 3-5 cm and the distance between the last first filter plate (2) and the first second filter plate (3) is 1 cm in the housing (1) starting from the end of the housing (1) where the filter openings (6) are largest along the axis of the housing.

6. A coated gas filter device according to claim 1, characterized in that at least two first filter plates (2) are present in the housing (1) on the same cross-section of the housing (1).

7. A coated gas stream filter device according to claim 5, characterized in that the ratio of the distance between the first filter plate (2) and the second filter plate (3) to the size of the first gap is 1: 1/2 to 1: 2.

8. A coated gas filter device according to claim 1, characterized in that the first filter plate (2) and the second filter plate (3) are fixedly connected to the housing (1) by means of a plug-in connection.

9. A coated gas filter device according to claim 5, characterized in that the area of the projection of the first filter plate (2) on the cross section of the housing (1) on the same cross section is 50-90% of the area of the inner cross section of the housing (1), and the area of the projection of the second filter plate (3) on the cross section of the housing (1) on the same cross section is 50-90% of the area of the inner cross section of the housing (1).