Baghouse inlet flue

Abstract

The utility model relates to bag type dust collector technical field especially, relates to a bag type dust collector entrance flue, including main flue, first bundle mouth, inclined flue, hopper and middle box, first bundle mouth is set in the lower of main flue along vertical direction, first bundle mouth is connected with main flue and inclined flue respectively, inclined flue is connected with hopper, hopper sets up in the lower of inclined flue, middle box sets up in the upper of hopper and communicates with hopper, main flue passes into flue gas, flue gas enters hopper and middle box along first bundle mouth and inclined flue in proper order, through setting first bundle mouth in the lower of main flue, and setting inclined flue in the export end of first bundle mouth, make flue gas of main flue pass through first bundle mouth and inclined flue in proper order, enter middle box, and then make flue gas accelerate in gradually reducing passage, reduce the deposition of flue gas in flue, solved the prior art in the dust collector flue fan load low -biased time, the flow rate is slow, causes the technical problem of entrance flue.

Description

Technical Field

[0001] This utility model relates to the field of bag filter technology, and in particular to an inlet flue of a bag filter. Background Technology

[0002] A baghouse dust collector is a dry dust filtration device. It is suitable for collecting fine, dry, non-fibrous dust. The filter bags are made of woven filter cloth or non-woven felt, utilizing the filtration effect of the fibrous fabric to filter dust-laden gas. When the dust-laden gas enters the baghouse dust collector, larger, heavier dust particles settle down due to gravity and fall into the ash hopper. The gas containing finer dust particles is purified as it passes through the filter media, as the dust is trapped.

[0003] The existing bag filter inlet flue is directly connected to the main flue inlet of the dust collector through an inclined flue. The inclined flue allows the ash to flow into the dust collector ash hopper to reduce ash accumulation.

[0004] However, the flow velocity in the dust collector flue depends on the fan load. When the fan load is low, the flow velocity is slow, which can easily cause dust to accumulate in that location. Utility Model Content

[0005] The purpose of this utility model is to provide an inlet flue of a bag filter to solve the technical problem in the prior art where the flow velocity of the flue of the dust collector depends on the fan load, and the flow velocity is slow when the fan load is low, which easily leads to dust accumulation at that location.

[0006] In the first aspect, the present invention provides an inlet flue of a bag filter, comprising a main flue, a first inlet, an inclined flue, a dust hopper, and a middle box;

[0007] The first inlet is vertically positioned below the main flue. The inlet of the first inlet is connected to the main flue, and the outlet of the first inlet is connected to one end of the inclined flue. The inner diameter of the first inlet gradually decreases from the inlet to the outlet. The other end of the inclined flue is connected to the ash hopper, which is positioned below the inclined flue. The middle box is positioned above the ash hopper and is connected to it. The main flue is used to introduce flue gas, which sequentially enters the ash hopper and the middle box along the first inlet and the inclined flue.

[0008] Furthermore, the inclined flue extends at an angle to the horizontal direction.

[0009] Furthermore, the bag filter inlet flue includes two first openings and two inclined flues;

[0010] Two first openings are arranged side by side below the main flue, and the first openings and the inclined flues are connected in a one-to-one correspondence. The two inclined flues are arranged symmetrically.

[0011] The bag filter inlet flue also includes two ash hoppers and two intermediate boxes;

[0012] The two intermediate boxes are respectively located on both sides of the main flue, and the ash hopper and the intermediate boxes are connected in a one-to-one correspondence.

[0013] Furthermore, the inlet flue of the bag filter also includes a second opening, which is disposed between the first opening and the inclined flue. The two ends of the second opening are respectively connected to the first opening and the inclined flue, and the inner diameter of the second opening gradually decreases from the inlet end to the outlet end.

[0014] Compared with the prior art, the present invention provides an inlet flue of a bag filter, including a main flue, a first inlet, an inclined flue, a dust hopper, and a middle chamber. The first inlet is vertically positioned below the main flue, with its inlet end connected to the main flue and its outlet end connected to one end of the inclined flue. The other end of the inclined flue is connected to the dust hopper, which is located below the inclined flue. The middle chamber is positioned above the dust hopper and connected to it. The main flue is used to introduce flue gas, which sequentially enters the dust hopper and the middle chamber through the first inlet and the inclined flue. By setting the first inlet below the main flue and the inclined flue at its outlet end, the flue gas from the main flue passes through the first inlet and the inclined flue sequentially into the middle chamber. This accelerates the flue gas in the gradually narrowing passage, reducing its deposition in the flue and solving the technical problem in the prior art where the flow rate is slow when the dust collector's flue fan load is low, leading to a slow inlet flue. Attached Figure Description

[0015] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of the inlet flue of the bag filter provided in an embodiment of the present utility model.

[0017] Figure label:

[0018] 100. Main flue; 200. First outlet; 300. Inclined flue; 400. Ash hopper; 500. Middle box; 600. Outlet flue; 700. Second outlet. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0021] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0022] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0023] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0024] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0026] like Figure 1 As shown, this utility model embodiment provides an inlet flue of a bag filter, including a main flue 100, a first inlet 200, an inclined flue 300, a dust hopper 400, and a middle box 500. The first inlet 200 is vertically disposed below the main flue 100, with its inlet end connected to the main flue 100 and its outlet end connected to one end of the inclined flue 300. The inner diameter of the first inlet 200 gradually decreases from the inlet end to the outlet end. The other end of the inclined flue 300 is connected to the dust hopper 400, which is disposed below the inclined flue 300. The middle box 500 is disposed above the dust hopper 400 and connected to it. The main flue 100 is used to introduce flue gas, which sequentially enters the dust hopper 400 and the middle box 500 along the first inlet 200 and the inclined flue 300.

[0027] That is, the bag filter inlet flue provided in this embodiment of the utility model provides a first constriction port 200 below the main flue 100 and an inclined flue 300 at the outlet end of the first constriction port 200, so that the flue gas of the main flue 100 passes through the first constriction port 200 and the inclined flue 300 in sequence and enters the middle box 500. This allows the flue gas to be accelerated in the gradually narrowing passage, reducing the deposition of flue gas in the flue. This solves the technical problem in the prior art where the flow rate is slow when the load of the dust collector flue fan is low, resulting in a slow inlet flue.

[0028] Specifically, the main flue 100 of the bag filter provided by this utility model is constructed of metal plates and is approximately square in shape. In other embodiments of this application, the main flue 100 may also be configured in other shapes. The first constriction 200 is funnel-shaped and located below the main flue 100, with a large inner diameter at the inlet end and a small inner diameter at the outlet end, thereby accelerating the flue gas in the gradually narrowing first constriction 200 before it enters the inclined flue 300. The inclined flue 300 is located at the bottom of the first constriction 200 and is made of metal plates. The inclined flue 300 can be fixed to the bottom of the first constriction 200 by welding. The other end of the flue is connected to the ash hopper 400, thereby allowing the flue gas to enter the ash hopper 400 for deposition through the inclined flue 300. The flue gas accelerated by the first constriction 200 can quickly pass through the inclined flue 300, thereby reducing the deposition of flue gas in the flue. The top of the ash hopper 400 is provided with a middle box 500, the top of which is connected to the outlet flue 600, so that the flue after dust deposition is discharged from the outlet flue 600.

[0029] Furthermore, the inclined flue 300 extends in a direction that forms an angle with the horizontal direction.

[0030] Specifically, the inclined flue 300 extends downward at a 45° angle to the horizontal direction, thereby further accelerating the flue gas. At the same time, it ensures that the ash hopper 400 can be set on one side below the main flue 100, which facilitates the overall layout of the bag filter inlet flue.

[0031] Furthermore, the bag filter inlet flue includes two first openings 200 and two inclined flues 300; the two first openings 200 are arranged side by side below the main flue 100, and the first openings 200 and the inclined flues 300 are connected one-to-one, and the two inclined flues 300 are symmetrically arranged; the bag filter inlet flue also includes two ash hoppers 400 and two middle boxes 500; the two middle boxes 500 are respectively arranged on both sides of the main flue 100, and the ash hoppers 400 and the middle boxes 500 are connected one-to-one.

[0032] Specifically, two first inlets 200 are arranged side-by-side below the main flue 100, thereby further reducing the diameter of the first inlets 200. Two inclined flues 300 are symmetrically arranged below the two first inlets 200 and are connected to the first inlets 200 one by one. The inclined flues 300 are extended to both sides, thereby guiding the flue gas to the ash hoppers 400 on both sides, improving the flue gas deposition efficiency. Two middle boxes 500 are set above the ash hoppers 400 and are fixedly connected to the main flue 100, thereby making the structure of the bag filter inlet flue more compact and reducing the overall volume of the bag filter inlet flue.

[0033] Furthermore, the inlet flue of the bag filter also includes a second opening 700, which is located between the first opening 200 and the inclined flue 300. The two ends of the second opening 700 are connected to the first opening 200 and the inclined flue 300, respectively. The inner diameter of the second opening 700 gradually decreases from the inlet end to the outlet end.

[0034] Specifically, the second constriction port 700 is made of metal sheet, with a large inner diameter at the inlet and a small inner diameter at the outlet, thereby accelerating the flue gas within the gradually narrowing second constriction port 700 before it enters the inclined flue 300. By setting the second constriction port 700 between the first constriction port 200 and the inclined flue 300, the flue gas can be further accelerated, allowing it to pass quickly through the inclined flue 300, thus reducing the deposition of flue gas within the flue.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. An inlet flue of a bag filter, characterized in that, It includes the main flue (100), the first inlet (200), the inclined flue (300), the ash hopper (400), and the middle box (500); The first constriction port (200) is vertically positioned below the main flue (100). The inlet end of the first constriction port (200) is connected to the main flue (100), and the outlet end of the first constriction port (200) is connected to one end of the inclined flue (300). The inner diameter of the first constriction port (200) gradually decreases from the inlet end to the outlet end. The other end of the inclined flue (300) is connected to the ash hopper (400). The ash hopper (400) is positioned below the inclined flue (300). The middle box (500) is positioned above the ash hopper (400) and is connected to the ash hopper (400). The main flue (100) is used to introduce flue gas. The flue gas enters the ash hopper (400) and the middle box (500) sequentially along the first constriction port (200) and the inclined flue (300).

2. The inlet flue of the bag filter according to claim 1, characterized in that, The inclined flue (300) extends in a direction that forms an angle with the horizontal direction.

3. The inlet flue of the bag filter according to claim 1, characterized in that, The bag filter inlet flue includes two first openings (200) and two inclined flues (300); Two first openings (200) are arranged side by side below the main flue (100), and the first openings (200) and the inclined flues (300) are connected in a one-to-one correspondence, and the two inclined flues (300) are arranged symmetrically; The bag filter inlet flue also includes two ash hoppers (400) and two middle boxes (500); The two middle boxes (500) are respectively disposed on both sides of the main flue (100), and the ash hopper (400) and the middle boxes (500) are connected in a one-to-one correspondence.

4. The inlet flue of the bag filter according to claim 1, characterized in that, The inlet flue of the bag filter also includes a second opening (700), which is disposed between the first opening (200) and the inclined flue (300). The two ends of the second opening (700) are respectively connected to the first opening (200) and the inclined flue (300), and the inner diameter of the second opening (700) gradually decreases from the inlet end to the outlet end.

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