WO2019174619A1

WO2019174619A1 - Double-layer filter for gas-solid separator and gas-solid separator

Info

Publication number: WO2019174619A1
Application number: PCT/CN2019/078161
Authority: WO
Inventors: 谢军
Original assignee: 无锡斐冠工业设备有限公司
Priority date: 2018-03-15
Filing date: 2019-03-14
Publication date: 2019-09-19
Also published as: CN110270163A; CN110270163B

Abstract

Disclosed are a filter device, in particular a double-layer filter plate for gas-solid separation for separating solids in air from clean air based on the inertial motion characteristic of solid particles in air, and a gas-solid separator. The double-layer filter plate for a gas-solid separator comprises a punched louver filter plate (3) and a punched plate (4). The punched louver filter plate (3) vertically cooperates with the punched plate (4), and holes (41) in the punched plate (4) and louver holes (31) in the punched louver filter plate (3) correspond to each other and form air-cleaning channels (9a, 9b); the cross-sectional area of air outlets (92a, 92b) of the air-cleaning channels (9a, 9b) is less than the cross-sectional area of air inlets (91a, 91b) of the air-cleaning channels (9a, 9b); and one side, close to the punched louver filter plate (3), of each of the air-cleaning channels (9a, 9b) is the air inlet (91a, 91b), and one side, close to the punched plate (4), of each of the air-cleaning channels (9a, 9b) is the air outlet (92a, 92b).

Description

Double-layer filter and gas-solid separator for gas-solid separator

Technical field

The invention relates to a filtering device, in particular to a double-layer filter plate and a gas-solid separator which utilize the inertial motion characteristics of solid particles in air to separate solid and clean air in the air.

Background technique

At present, the prior art gas-solid separators (sand filters or separators) use the principle of inertia. Such as the most common cyclone separator. When the sand and air mixture enters the gas-solid separator at the same time and passes through the filter element of the gas-solid separator, the air will separate from the sand due to the greater mass of the dust and the natural inertia of the motion, and the dust continues to move to the specially designed trajectory cloud. Until it enters the container for collecting dust, the air will change the direction of movement and pass through the filter output.

In addition to the most common cyclone gas-solid separation, there are two main types of gas-solid separators. One is shown in Figure 1. The internal filter element is composed of a single piece of louver. This structure has high ventilation efficiency but very poor sand filtration effect; the other is shown in Figure 2. It is a V-shaped structure, which is welded by a plurality of bent filter plates, and its air passage is more complicated than the first one. The sand filtering effect is good, the single ventilation amount is low, the manufacturing cost is high, and the production is difficult.

Therefore, how to provide a gas-solid separator with good sand filtering effect, large ventilation and convenient processing has become an urgent technical problem to be solved in the industry.

Disclosure of invention

The object of the present invention is to provide a double-layer filter plate which is easy to process, simple in structure, low in manufacturing cost, large in ventilation, and good in sand filtering effect.

One of the objects of the invention is achieved in this way:

A double-layer filter plate for a gas-solid separator, comprising a punched louver filter plate and a punching plate. The punched louver filter plate cooperates with the punching plate, the hole on the punching plate corresponds to the louver hole on the punching louver filter plate, and forms a clear air passage, and the net air passage is out The cross-sectional area of the tuyere is smaller than the cross-sectional area of the air inlet of the clean air passage, and the side of the clean air passage is the air inlet on the side of the punching louver filter plate, and the side of the clean air passage is on the side of the punching plate Air outlet.

Further, the punched louver filter plate and the punching plate are superposed and fixed. It may be that the punched louver filter plate and the punching plate are directly superposed and fixed.

Further, the hole on the punching plate has a one-to-one correspondence with the louver hole on the punching louver filter plate; or the hole on the punching plate is spaced from the louver hole in the punching louver filter plate correspond.

Another object of the present invention is to provide a gas-solid separator which is easy to process, simple in structure, low in manufacturing cost, large in ventilation, and good in sand filtering effect.

One of the objects of the invention is achieved in this way:

A gas-solid separator includes a box body having openings on both sides thereof; a double-layer filter plate is disposed in the box body and fixed to the box body, and the double-layer filter plate is to be the box body Dividing into two parts: a mixed air duct and a net air duct; the tail of the mixed air duct is connected to the sand pipe; wherein the double-layer filter plate is formed by a punching louver filter plate and a punching plate, and the punching The hole on the orifice plate corresponds to the louver hole on the punching louver filter plate and forms a clear air passage, and the air inlet port cross-sectional area of the clean air passage is larger than the air outlet cross-sectional area of the clean air passage. Among them, the mixed air passage is a mixture of air and solid particles, and the clean air duct is clean air; the tail of the mixed air duct is the particulate matter outlet.

In the above solution, the punched louver filter plate and the punching plate are directly superposed and fixed. A connecting member may also be disposed between the punched louver filter plate and the punching plate.

In the above solution, the angle between the punching plate and the center line of the box is not less than 5° and not more than 30°.

In the above solution, the holes on the punching plate are in one-to-one correspondence with the louver holes on the punching louver filter plate; or the holes in the punching plate and the louver holes in the punching louver filter plate The interval corresponds.

In the above solution, the punching plate is disposed on the bending, and is fixed to the box by the bending.

In the present invention, the cross-sectional area of the air outlet of the clean air passage (the passage of the clean air) is smaller than the cross-sectional area of the air inlet of the clean air passage, thereby reducing the airflow speed of the clean air at the air outlet, thereby allowing the clean air to be at the air outlet. The velocity of the airflow is much lower than the velocity of the airflow of the solid particles on the mixing channel. Finally, the relatively low velocity airflow of the clean air in the clean air passage cannot reverse the direction of movement of the high velocity particulates in the air in the direction of the particulate outlet to achieve filtration.

The beneficial effects of the present invention are as follows:

1. Efficient gas-solid separation of solid particles with a diameter of 5 microns or more.

2. Since the punching louver filter plate is more complicated than the punching plate, the invention adopts the punching plate to make a more complicated bending part, and the punching louver filter plate is made into a stamping piece which can be directly processed, through The rivet secures the punched louver filter plate to the punch plate. Significantly reduce product manufacturing costs.

3. The invention adopts a double-layer superimposed filter plate structure, which greatly improves the ventilation amount and greatly improves the sand filtering effect.

BRIEF DESCRIPTION OF THE DRAWINGS

Figure 1 is a schematic view-1 of a prior art sand filter.

2 is a schematic view-2 of a prior art sand filter.

3 is a schematic view of a punched louver filter plate according to an embodiment of the present invention.

4 is a schematic view of a punching plate according to an embodiment of the present invention.

FIG. 5 is a schematic structural view of a double-layer filter plate according to an embodiment of the present invention.

Figure 6 is a front elevational view of a double-layer filter plate according to an embodiment of the present invention.

Figure 7 is a schematic view showing the reverse side of a double-layer filter plate according to an embodiment of the present invention.

Figure 8 is a schematic view of a sand filter according to an embodiment of the present invention.

Figure 9 is a schematic view - 1 of a sand filter according to an embodiment of the present invention.

Figure 10 is a schematic view-2 of a sand filter according to an embodiment of the present invention.

Figure 11 is a schematic view-3 of a sand filter according to an embodiment of the present invention.

Figure 12 is a schematic view-4 of a sand filter according to an embodiment of the present invention.

Figure 13 is a schematic view-5 of a sand filter according to an embodiment of the present invention.

Figure 14 is a schematic view -6 of a sand filter according to an embodiment of the present invention.

The main component symbol description:

1 box, 10 left side panel, 12 upper side panel, 13 lower side panel, 14 sand tube, 15 right side panel,

2 superimposed filter separator, 2a double filter plate, 2b double filter plate,

3 punched louver filter plate, 3a, 3b punched louver filter plate, 31 louver holes, 31a, 31b, 31a1, 31a2, 31b1, 31b2 louver holes,

4 punching plate, 41 holes, 41a holes, 41b holes, 4a, 4b punching plates,

5a ventilation vent, 5b ventilation vent, 8a mixing duct, 8b mixing duct

9a clean air passage, 9a1, 9a2 clean air passage, 91a air inlet, 92a air outlet, 9b clean air passage, 9b1, 9b2 clean air passage, 91b, 91b1 air inlet,

92b, 92b1 air outlet, 91a1 air inlet, 92a1 air outlet, 91a2 air inlet, 92a2 air outlet,

The angle between the A1 punching plate and the center line of the box; the angle between the A2 punching plate and the center line of the box

The best way to implement the invention

The present invention is further described in the following with reference to the accompanying drawings. The following examples are merely preferred, and are not intended to limit the scope of the invention, but the purpose is to cover various modifications and equivalent arrangements in the present invention. Within the scope of the patent scope to be applied for.

Example 1:

The present invention will be further described below with reference to FIGS. 3 to 7 and FIG.

A double-layer filter plate for a gas-solid separator, comprising a punched louver filter plate 3 and a punching plate 4.

The louver filter plate 3 is provided with a plurality of rows of parallel louvered holes 31.

The perforated plate 4 is provided with a plurality of rows of parallel holes 41.

The punching louver filter plate 3 and the punching plate 4 are directly superposed vertically, and the punching plate 4 is fixed to the punching louver filter plate 3 punching plate 4 by rivets. The louver holes 31 on the louver filter plate 3 correspond one-to-one with the holes 41 on the punching plate 4. The louver hole 31 and the punching plate 4 form a

clean air passage

9a and 9b, and the clean air passage 9a includes an air inlet 91a and an air outlet 92a; the air inlet 91a of the clean air passage 9a has a sectional area larger than that of the air outlet 92a of the clean air passage 9a. The area; the clean air passage 9b includes an air inlet 91b and an air outlet 92b; the air inlet 91b of the clean air passage 9b has a sectional area larger than that of the air outlet 92b of the clean air passage 9b.

Example 2:

The present invention will be further described below in conjunction with FIGS. 3 to 9:

A gas-solid separator includes a tank 1. Openings are provided on both sides of the casing 1; including a mixture for air and solid particles entering the ventilation vent; and an outlet for clean air and a collection port for solid particulate matter.

The casing 1 is composed of a left side panel 10 and a right side panel 15 and the upper side panel 12 and the lower side panel 13 respectively joined by rivets to form an outer frame.

The double-layer filter plates (2a, 2b) are placed in the casing 1 and fixed to the casing 1. The superimposed filter separator 2 is placed in the

casing

1, and 1 to N superimposed filter separators can be set according to requirements, and the casing is divided into a plurality of units, and N is a natural number. Each unit has a mixing duct and ventilation vents and a clean air duct.

The superimposed filter separator 2 is connected to the upper side panel 12 by rivets to form a unit arm A with the left side panel 10 and the right side panel 15; the unit A is provided with a ventilation vent 5a and a mixing duct 8a. The mixing duct 8a is formed by stacking the filter spacers 2 with the left side panel 10 and the right side panel 15 and the double layer filter panel 2a. The mixing duct 8a is a passage for a mixture of air and solid particles. The tail of the mixing duct 8a is connected to the sand tube 14.

The superimposed filter separator 2 is connected to the lower side plate 13 by rivets, and forms a unit B with the left side plate 10 and the right side plate 15; the unit A is provided with a ventilation vent 5b and a mixing duct 8b. The mixing duct 8b is formed by superposing the filter partition 2 and the left side panel 10 and the right side panel 15 and the double layer filter panel 2b. The mixing duct 8b is a passage for a mixture of air and solid particles. The tail of the mixing duct 8b is connected to the sand tube 14.

The double-layer filter plate 2a is formed by directly fixing the punched louver filter plate 3a and the punching plate 4a by rivets. The louver filter plate 3a is provided with a plurality of rows of parallel louvered holes 31a. The perforated plate 4a is provided with a plurality of rows of parallel holes 41a. The louver hole 31a of the punching louver filter plate 3a and the hole 41a of the punching plate 4a are in one-to-one correspondence to form a clean air passage 9a, the clean air passage 9a includes the air inlet 91a and the air outlet 92a; and the air inlet 91a of the clean air passage 9a The cross-sectional area is larger than the cross-sectional area of the air outlet 92a of the clean air passage 9a.

The double-layer filter plate 2b is directly fixed by the punched louver filter plate 3b and the punching plate 4b by rivets. The louver filter plate 3b is provided with a plurality of rows of parallel louvered holes 31b. The perforated plate 4b is provided with a plurality of rows of parallel holes 41b. The louver hole 31b of the punching louver filter plate 3b and the hole 41b of the punching plate 4b are in one-to-one correspondence to form a clean air passage 9b, the clean air passage 9b includes an air inlet 91b and an air outlet 92b; and the air inlet 91b of the clean air passage 9b The cross-sectional area is larger than the cross-sectional area of the air outlet 92b of the clean air passage 9b.

The superimposed filter separator 2 and the double-layer filter plate 2a and the left side plate 10 and the right side plate 15 constitute a V-shaped mixing duct 8a and a ventilation vent 5a. The mixture of air and solid particles enters the mixing duct 8a from the vent 5a, and then the gas-solid separation is performed through the clean air passage 9a. The solid particles such as sand enter the tail of the mixing duct 8a with the inertia of the airflow, and finally enter the sand duct 14. The clean air is discharged through the air outlet 92a of the clean air passage 9a.

The superimposed filter separator 2 and the double-layer filter plate 2b and the left side plate 10 and the right side plate 15 constitute a V-shaped mixing duct 8b and a ventilation tuyere 5b. The mixture of air and solid particles enters the mixing duct 8b from the ventilation vent 5b, and then the gas-solid separation is performed through the clean air passage 9b. The solid particles such as sand enter the tail of the mixing duct 8b with the inertia of the airflow, and finally enter the sand outlet tube 14. The clean air is discharged through the air outlet 92b of the clean air passage 9b.

The angle A1 between the punching plate 4a and the center line of the casing is 20°. The angle A2 between the punching plate 4b and the center line of the casing is 20°.

Since the area of the clean air outlet passage is smaller than the area of the clean air inlet passage, the air flow speed of the clean air outlet passage is reduced, so that the speed of the clean air outlet air flow is much lower than the speed of the air flow in the direction of the solid particle outlet, and finally the clean air outlet Filtration is achieved by the relatively low velocity of the gas stream which does not reverse the direction of the high velocity particulate matter in the air exiting the particulate matter.

Example 3:

The present invention will be further described below with reference to FIG. 8 and FIG. 10:

casing

1, and 1 to N superimposed filter separators can be provided according to requirements, and the casing is divided into a plurality of units, and N is a natural number. Each unit has a mixing duct and ventilation vents and a clean air duct.

The superimposed filter separator 2 is connected to the lower side plate 13 by rivets to form a unit B with the left side plate 10 and the right side plate 15; the unit B is provided with a ventilation vent 5b and a mixing duct 8b. The mixing duct 8b is formed by superposing the filter partition 2 and the left side panel 10 and the right side panel 15 and the double layer filter panel 2b. The mixing duct 8b is a passage for a mixture of air and solid particles. The tail of the mixing duct 8b is connected to the sand tube 14.

The double-layer filter plate 2a is formed by directly fixing the punched louver filter plate 3a and the punching plate 4a by rivets. The louver filter plate 3a is provided with a plurality of rows of louver holes uniformly distributed in parallel. The perforated plate 4a is provided with a plurality of rows of parallel uniformly distributed holes. The louver holes of the punched louver filter plate 3a and the hole spacing on the punching plate 4a correspond to each other to form a clean air passage.

The louver hole 31a1 of the punched louver filter plate 3a and the hole 41a on the punching plate 4a correspond to each other to form a clean air passage 9a1. The clean air passage 9a1 includes an air inlet 91a1 and an air outlet 92a1; and the air inlet 91a1 of the clean air passage 9a1 has a sectional area larger than that of the air outlet 92a1 of the clean air passage 9a1.

The louver hole 31a2 of the punched louver filter plate 3a and the hole 41a on the punching plate 4a correspond to each other to form a clean air passage 9a2. The adjacent louver holes 31a1 and louver holes 31a2 on the punched louver filter plate 3a respectively form a clear air passage with the holes 41a on the punching plate 4a.

The double-layer filter plate 2b is directly fixed by the punched louver filter plate 3b and the punching plate 4b by rivets. The louver filter plate 3b is provided with a plurality of rows of parallel louver holes. The perforated plate 4b is provided with a plurality of rows of parallel holes. The louver holes of the punched louver filter plate 3b and the hole spacing on the punching plate 4b correspond to each other to form a clean air passage.

The louver hole 31b1 of the punched louver filter plate 3b and the hole 41b on the punching plate 4b form a clear air passage 9b1. The clean air passage 9b1 includes an air inlet 91b1 and an air outlet 92b1; and the air inlet 91b1 of the clean air passage 9b1 has a sectional area larger than that of the air outlet 92b1 of the clean air passage 9b1.

The louver hole 31b2 of the punched louver filter plate 3b and the hole 41b on the punching plate 4b form a clear air passage 9b2. The adjacent louver holes 31b1 and louver holes 31b2 on the punched louver filter plate 3b respectively form a clear air passage with the holes 41b on the punching plate 4b.

In the above solution, the double-layer filter plate 2a of the gas-solid separator may also be as shown in FIGS. 11 to 14. Among them, the louver filter plate 3a is provided with a plurality of rows of parallel louvered holes 31a. The perforated plate 4a is provided with a plurality of rows of parallel holes 41a. The louver hole 31a of the punched louver filter plate 3a and the hole 41a on the punching plate 4a are formed in one-to-one correspondence to form the clean air passage 9a.

Comparative experimental example:

1. Compared with the prior art (the gas-solid separator shown in FIG. 1), the ventilation amount and the sand filtering effect of the present invention are greatly improved compared with the prior art.

2. Compared with the prior art (the gas-solid separator shown in FIG. 2), the ventilation amount and the sand filtering effect of the present invention are greatly improved compared with the prior art.

3. Compared with the prior art (the gas-solid separator shown in FIG. 2), the invention has simpler processing process, high yield, short processing time and low cost.

The above description of the preferred embodiments of the present invention is not intended to limit the scope of the present invention, and the equivalent structural changes which are applied to the application of the present specification and the scope of the patent application are all included in the same. Within the scope of the invention.

Industrial applicability

Efficient gas-solid separation of solid particles with a diameter of 5 microns or more can be achieved by a gas-solid separator using a two-layer filter. Since the punching louver filter plate is more complicated than the punching plate, the present invention adopts a punching plate which is made into a relatively complicated bending member, and the punching louver filter plate is formed into a stamping piece which can be directly processed, and the rivet will be The punched louver filter plate is fixed on the punching plate. Significantly reduce product manufacturing costs. By adopting a double-layered filter plate structure, the ventilation amount is greatly improved, and the sand filtering effect is also greatly improved.

Claims

A double-layer filter plate for a gas-solid separator, comprising a punched louver filter plate, characterized in that it further comprises a punching plate, the punched louver filter plate and the punching plate are matched, and the punching plate is matched The hole corresponds to the louver hole of the punching louver filter plate and forms a clear air passage, and the air outlet cross-sectional area of the clean air passage is smaller than the air inlet cross-sectional area of the clean air passage, and the clean air passage is One side of the punching louver filter plate is an air inlet, and the clean air passage is an air outlet on a side of the punching plate.
The double-layer filter plate for a gas-solid separator according to claim 1, wherein the punched louver filter plate and the punching plate are directly superposed and fixed.
The double-layer filter plate for a gas-solid separator according to claim 1 or 2, wherein the hole on the punching plate is in one-to-one correspondence with the louver hole on the punching louver filter plate.
The double-layer filter plate for a gas-solid separator according to claim 1 or 2, wherein the hole on the punching plate corresponds to the louver hole spacing on the punching louver filter plate.
A gas-solid separator, comprising a box body, wherein the box body is provided with openings on both sides thereof; wherein: a double-layer filter plate is disposed in the box body and fixed to the box body, and the double-layer filter board The tank is divided into two parts: a mixed air duct and a clean air duct; the tail of the mixed air duct is connected to the sand pipe; wherein the double-layer filter plate is formed by the punching louver filter plate and the punching plate The hole on the punching plate corresponds to the louver hole on the punching louver filter plate and forms a clear air passage, and the air inlet cross-sectional area of the clean air passage is larger than the air outlet cross-sectional area of the clean air passage.
A gas-solid separator according to claim 5, wherein said punched louver filter plate and said punching plate are directly superposed and fixed.
A gas-solid separator according to claim 5 or 6, wherein the angle between the punching plate and the center line of the casing is not less than 5° and not more than 30°.
A gas-solid separator according to claim 7, wherein the holes in the punching plate are in one-to-one correspondence with the louver holes in the punching louver filter plate.
A gas-solid separator according to claim 7, wherein the hole in the punching plate corresponds to the louver hole spacing on the punched louver filter plate.
A gas-solid separator according to claim 7, wherein said punching plate is provided on the bent plate, and is fixed to said casing by said bending.