Curved surface type efficient denitration filter bag

Abstract

The utility model relates to the technical field of denitration filter bags, and discloses a curved surface type efficient denitration filter bag which comprises a denitration filter bag main body, a bottom ring is fixed below the denitration filter bag main body, a top ring is fixed at the top end of the denitration filter bag main body, and a fixed column is fixed in the middle of the interior of the denitration filter bag main body. According to the denitration filter bag, the fixed columns are arranged in the denitration filter bag main body, and then the filter screen is arranged on the fixed columns in a sleeving manner, so that when gas enters the denitration filter bag main body to be filtered, the gas is filtered by the filter screen in advance; according to the present invention, the gas is subjected to secondary filtration through the denitration filtration bag main body, such that the filtration area is increased, and the problem that the filtration efficiency of the filtration bag is easily reduced along with the increase of the use time due to the gas filtration simply depending on the outer filtration layer during the use of the traditional denitration filtration bag is solved.

Description

Technical Field

[0001] The utility model application relates to the technical field of denitration filter bags, in particular to a curved surface type high-efficiency denitration filter bag. Background Art

[0002] Filter bags are a commonly used filter material and are widely used in various industrial fields. They are mainly used to filter impurities in liquids or gases. Through their internal fiber structure, filter bags can effectively intercept and remove impurities such as particles, dust, grease, etc. in the fluid, thereby purifying the fluid.

[0003] With increasingly stringent environmental regulations, flue gas denitrification technology has become an important means to control nitrogen oxide emissions. Traditional denitrification filter bags rely solely on the outer filter layer to filter the gas during use, which can easily reduce the filtration efficiency of the filter bag as the use time increases. Therefore, the development of a new type of curved high-efficiency denitrification filter bag has become an important way to solve the above problems. Summary of the invention

[0004] In order to solve the problem that traditional denitrification filter bags simply rely on the outer filter layer to filter the gas during use, which easily causes the filter bag's filtration efficiency to decrease as the use time increases, the utility model provides a curved high-efficiency denitrification filter bag to solve the above problem.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A curved high-efficiency denitrification filter bag comprises a denitrification filter bag body, a bottom ring is fixed at the bottom of the denitrification filter bag body, a top ring is fixed at the top of the denitrification filter bag body, a fixing column is fixed at the middle part of the denitrification filter bag body, two limiting columns are symmetrically fixed inside the bottom ring, both of the limiting columns are fixed to the inside of the denitrification filter bag body, an inner ring is slidingly sleeved on the fixing column, a spacer ring is fixed at the top of the inner ring, the spacer ring is slidingly sleeved on the fixing column, a filter screen is fixed on the side of the inner ring away from the fixing column, a fixing ring is threadedly connected to the top of the fixing column, and a fixing device is arranged at the top of the top ring.

[0007] Furthermore, the fixing device comprises a top cover, a limiting plate is symmetrically fixed to the bottom end of the top cover, and a fixing plate is symmetrically fixed to the outer side of the top cover.

[0008] Furthermore, an outer sleeve ring is fixed to a side of the filter screen away from the inner sleeve ring, and a side of the outer sleeve ring away from the filter screen is in contact with an inner wall of the denitration filter bag body.

[0009] Furthermore, springs are provided inside the inner ring and the outer ring, and the filter screen is provided with openings that match the shape of the limiting columns.

[0010] Furthermore, a side of the fixing plate close to the top ring is in contact with the outer side of the top ring, and the outer circle radius of the top ring is the same as the outer circle radius of the top cover.

[0011] Furthermore, a fixing hole is provided on the fixing plate, and a screw hole having the same shape as the fixing hole of the fixing plate is provided on the side surface of the top ring.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. In the utility model, a fixed column is arranged inside the main body of the denitration filter bag, and then a filter net is set on the fixed column, so that when the gas enters the main body of the denitration filter bag for filtration, it is filtered through the filter net in advance, and then the gas is filtered twice by the main body of the denitration filter bag, thereby increasing the filtration area and solving the problem that the traditional denitration filter bag relies solely on the outer filter layer to filter the gas during use, which easily reduces the filtration efficiency of the filter bag as the use time increases.

[0014] 2. In the utility model, a detachable design is adopted and a compression spring is arranged inside the inner sleeve ring, so that the inner sleeve ring slides on the filter screen, thereby the inner sleeve ring drives the filter screen to change the gap between the filter screens. At this time, the staff can arrange another filter screen inside the inner sleeve ring, so that the number of filter screens inside the denitrification filter bag body is increased, thereby improving the flue gas filtration efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application 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 present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0016] Figure 1 is a schematic diagram of a three-dimensional structure according to an embodiment of the present application;

[0017] Figure 2 yes Figure 1 A bottom-up structural perspective diagram of the embodiment shown;

[0018] Figure 3 yes Figure 1 A three-dimensional schematic diagram of the structure when opened and looking up in the illustrated embodiment;

[0019] Figure 4 yes Figure 1 The three-dimensional structure schematic diagram of the opened structure in the embodiment shown.

[0020] The meanings of the reference numerals in the figure are: 1. Denitrification filter bag body; 2. Bottom ring; 3. Top ring; 4. Top cover; 5. Fixed plate; 6. Limiting plate; 7. Fixed column; 8. Limiting column; 9. Inner ring; 10. Filter net; 11. Spacer ring; 12. Fixed ring; 13. Outer ring. DETAILED DESCRIPTION

[0021] In order to make the purpose, features, and advantages of the present application more obvious and easy to understand, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the embodiments described below are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0022] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 A curved high-efficiency denitrification filter bag comprises a denitrification filter bag body 1, a bottom ring 2 is fixed at the bottom of the denitrification filter bag body 1, a top ring 3 is fixed at the top of the denitrification filter bag body 1, a fixing column 7 is fixed at the middle part of the denitrification filter bag body 1, two limiting columns 8 are symmetrically fixed inside the bottom ring 2, and the two limiting columns 8 are both fixed to the inside of the denitrification filter bag body 1, an inner sleeve ring 9 is slidingly sleeved on the fixing column 7, a spacer ring 11 is fixed at the top of the inner sleeve ring 9, and the spacer ring 11 is slidingly sleeved on the fixing column 7, a filter screen 10 is fixed on the side of the inner sleeve ring 9 away from the fixing column 7, a fixing ring 12 is threadedly connected to the top of the fixing column 7, and a fixing device is arranged on the top of the top ring 3, which increases the contact area between the gas and the filter screen 10 and improves the filtering efficiency.

[0023] Specifically, the fixing device includes a top cover 4, a limiting plate 6 is symmetrically fixed at the bottom end of the top cover 4, a fixing plate 5 is symmetrically fixed on the outside of the top cover 4, the side of the fixing plate 5 close to the top ring 3 is in contact with the outside of the top ring 3, the outer circle radius of the top ring 3 is the same as the outer circle radius of the top cover 4, a fixing hole is opened on the fixing plate 5, and screw holes with the same shape as the fixing holes of the fixing plate 5 are provided on the side of the top ring 3, so as to facilitate fixing the filter screen 10 inside the denitrification filter bag body 1.

[0024] As an optimization solution, Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, an outer sleeve ring 13 is fixed to the side of the filter screen 10 away from the inner sleeve ring 9 , and a side of the outer sleeve ring 13 away from the filter screen 10 is in contact with the inner wall of the denitration filter bag body 1 , so that the gas is in full contact with the filter screen 10 .

[0025] Specifically, springs are provided inside the inner ring 9 and the outer ring 13, and the filter screen 10 is provided with openings that match the shape of the limiting column 8, so that the number of the filter screens 10 inside the denitrification filter bag body 1 can be adjusted.

[0026] Working principle: align the filter screen 10 with the position of the limiting column 8, then sleeve the spacer ring 11 on the fixing column 7, so that the inner sleeve ring 9 is sleeved on the fixing column 7, so that the filter screen 10 is set inside the denitration filter bag body 1, and then fix the fixing ring 12 with the thread above the fixing column 7, so that the fixing ring 12 limits the spacer ring 11, so that the filter screen 10 is fixed inside the denitration filter bag body 1, and then align the position of the limiting plate 6 with the position of the limiting column 8, so that the top cover 4 is covered on the top surface of the top ring 3, and then the fixing plate 5 is fixed to the outside of the top ring 3 by a nut, so that The top cover 4 is fixed to the top ring 3. When the staff needs to improve the filtering efficiency of the denitrification filter bag body 1, the spacer ring 11 slides downward at the same time, so that the spacer ring 11 drives the inner ring 9 to move downward, so that the inner ring 9 is compressed and deformed, so that the filter nets 10 are deformed as the inner ring 9 is deformed, and the intervals between the filter nets 10 are reduced. At this time, the staff can put another spacer ring 11 on the fixed column 7, so that two filter nets 10 are arranged inside the denitrification filter bag body 1, which increases the contact area of ​​the filter bag and improves the filtering efficiency of the denitrification filter bag.

[0027] It will be apparent to those skilled in the art that the present application is not limited to the details of the exemplary embodiments described above, and that the present application can be implemented in other specific forms without departing from the spirit or essential features of the present application. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the present application is defined by the appended claims rather than the above description, and it is intended that all changes within the meaning and scope of the equivalent elements of the claims be included in the present application. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0028] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A curved high-efficiency denitration filter bag, comprising a denitration filter bag body (1), characterized in that: A bottom ring (2) is fixed below the denitration filter bag body (1), a top ring (3) is fixed at the top of the denitration filter bag body (1), a fixing column (7) is fixed in the middle of the denitration filter bag body (1), two limiting columns (8) are symmetrically fixed inside the bottom ring (2), and both limiting columns (8) are fixed inside the denitration filter bag body (1), an inner sleeve ring (9) is slidably sleeved on the fixing column (7), a spacer ring (11) is fixed at the top of the inner sleeve ring (9), and the spacer ring (11) is slidably sleeved on the fixing column (7), a filter screen (10) is fixed on the side of the inner sleeve ring (9) away from the fixing column (7), a fixing ring (12) is threadedly connected to the top of the fixing column (7), and a fixing device is arranged at the top of the top ring (3).

2. The curved high-efficiency denitrification filter bag according to claim 1, characterized in that: The fixing device comprises a top cover (4), a limiting plate (6) is symmetrically fixed to the bottom end of the top cover (4), and a fixing plate (5) is symmetrically fixed to the outside of the top cover (4).

3. The curved high-efficiency denitrification filter bag according to claim 1, characterized in that: An outer sleeve ring (13) is fixed to the side of the filter screen (10) away from the inner sleeve ring (9), and a side of the outer sleeve ring (13) away from the filter screen (10) is in contact with the inner wall of the denitration filter bag body (1).

4. The curved high-efficiency denitrification filter bag according to claim 3 is characterized in that: The inner sleeve ring (9) and the outer sleeve ring (13) are both provided with springs, and the filter screen (10) is provided with an opening that matches the shape of the limiting column (8).

5. The curved high-efficiency denitrification filter bag according to claim 2 is characterized in that: The side of the fixing plate (5) close to the top ring (3) is in contact with the outer side of the top ring (3), and the outer circle radius of the top ring (3) is the same as the outer circle radius of the top cover (4).

6. The curved high-efficiency denitration filter bag according to claim 5, characterized in that: The fixing plate (5) is provided with a fixing hole, and the side surface of the top ring (3) begins to have a screw hole with the same shape as the fixing hole of the fixing plate (5).

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