Novel biomass boiler flue gas treatment dust removal cloth bag

Abstract

The utility model relates to the technical field of filter bags, and discloses a novel biomass boiler flue gas treatment dust removal cloth bag which comprises a cloth bag body, a piston ring is arranged at an opening in the upper end of the cloth bag body, a cage framework is arranged in the cloth bag body, a cleaning assembly is arranged in the cage framework, and the cleaning assembly comprises a hammer head. The hammerhead is arranged at the center of the lower end inside the cage framework. According to the novel biomass boiler flue gas treatment dedusting cloth bag, through the arrangement of the cleaning assembly, when gas entering the cloth bag body makes contact with a thin plate, upward thrust can be effectively exerted on the thin plate, due to the fact that the flow speed of boiler flue gas is different, and the thrust of airflow on the thin plate is different, when the flow speed of the gas is large, the gas ascends to jack up the thin plate, and dust is removed; the thin plate drives the limiting sliding rod and the hammer head to move upwards in the upward moving process, when the gas flow rate is small, the hammer head falls down to strike the cloth bag body, cigarette ash attached to the surface of the cloth bag body can be effectively removed, and the using effect is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of filter bags, in particular to a novel dust removal cloth bag for biomass boiler flue gas treatment. Background Art

[0002] A biomass boiler is a boiler that uses biomass energy as fuel. Waste from agricultural production, such as crop straw, agricultural processing waste (rice husks), etc. can be used as fuel for biomass boilers.

[0003] Since direct combustion of biomass fuels will produce pollutant emissions such as NOx, SO2 and particulate matter, with the large-scale installation of domestic biomass boilers and increasingly stringent emission standards, low-emission technology of biomass boilers has become the focus of current researchers.

[0004] The existing dust removal bags are easily affected by the flue gas temperature during use, resulting in bag burning at the bottom of the bags, thus affecting their service life; and the filter bags may be damaged during use, resulting in a limited range of use of the filter bags. When the filter bags are used for boiler flue gas, the soot attached to the bottom of the filter bags cannot be cleaned, affecting the use effect. Therefore, it is necessary to provide a new type of biomass boiler flue gas treatment dust removal bag to solve the above problems. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a novel biomass boiler flue gas treatment dust removal bag, which solves the problems mentioned in the above background.

[0006] The utility model provides the following technical solutions: a novel biomass boiler flue gas treatment dust removal bag, comprising a bag body, an expansion ring is arranged at the upper opening of the bag body, a cage frame is arranged inside the bag body, and a cleaning component is arranged inside the cage frame;

[0007] The cleaning assembly includes a hammer head, which is arranged at the center of the lower end of the cage frame;

[0008] Preferably, the cloth bag body is made by blending flame-retardant fibers and ultrafine fibers, the flame-retardant fibers and ultrafine fibers have a temperature resistance of above 220° C., and the cloth bag body is subjected to waterproof impregnation treatment and flame-retardant impregnation treatment before use.

[0009] Preferably, the cage frame includes a bottom ring, inner support rods, a top ring and a scraper, and a plurality of the inner support rods are provided, and the plurality of the inner support rods are arranged in a circle on the upper end surface of the bottom ring.

[0010] Preferably, a slot is provided on the scraper plate, and the upper end of the inner support rod passes through the slot and is fixedly connected to the top ring.

[0011] Preferably, the cleaning assembly further comprises a cross bar, a limiting sliding bar and a thin plate, both ends of the cross bar are fixedly connected to the inner wall of the scraper disk, and a sliding hole is provided at the center of the cross bar.

[0012] Preferably, the lower end of the limiting slide rod is fixedly connected to the hammer head, the upper end of the limiting slide rod is connected to the thin plate through a sliding hole, and the limiting slide rod is slidably connected to the cross bar.

[0013] Preferably, handles are fixedly provided on both sides of the upper end surface of the top ring.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. The new biomass boiler flue gas treatment dust removal bag has waterproof treatment on the bag body, making it relatively difficult for dust to stick to the surface of the filter bag. The bag body is made of flame-retardant fiber and flame-retardant treatment. Even if incompletely burned dust adheres, it will not expand the degree of product combustion. The bag body has good temperature resistance. By using some ultra-fine fibers, the density of the product after needle punching is increased to ensure ultra-low emissions of flue gas.

[0016] 2. The new biomass boiler flue gas treatment dust removal bag is equipped with a cleaning component. When the gas entering the bag body contacts the thin plate, it can effectively exert an upward thrust on the thin plate. Due to the different flow rates of the boiler flue gas, the thrust of the airflow on the thin plate is different. When the gas flow rate is large, the gas rises to lift the thin plate. During the upward movement of the thin plate, the limit slide bar and the hammer head are driven to move up. When the gas flow rate is small, the hammer head falls and hits the bag body, which can effectively clean the soot attached to the surface of the bag body to ensure the use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the connection structure between the cage frame and the bag body of the utility model;

[0018] Figure 2 This is a cross-sectional view of a new type of biomass boiler flue gas treatment dust removal bag of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the utility model after the cage frame and the cleaning component are installed;

[0020] Figure 4 It is a structural schematic diagram of the cage frame and cleaning components of the utility model.

[0021] In the figure: 1. cloth bag body; 2. expansion ring; 3. cage frame; 301. bottom ring; 302. inner support rod; 303. top ring; 304. scraper; 305. slot; 4. handle; 5. cleaning component; 501. cross bar; 502. sliding hole; 503. limit sliding rod; 504. hammer head; 505. thin plate. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-4 A novel biomass boiler flue gas treatment dust removal bag comprises a bag body 1, an expansion ring 2 is arranged at the upper opening of the bag body 1, a cage frame 3 is arranged inside the bag body 1, and a cleaning component 5 is arranged inside the cage frame 3;

[0024] The cleaning assembly 5 includes a hammer head 504 , which is arranged at the center of the lower end of the cage frame 3 .

[0025] Among them; the bag body 1 is made of a blend of flame-retardant fiber and ultra-fine fiber, and the temperature resistance of the flame-retardant fiber and the ultra-fine fiber is above 220°C. The bag body 1 is treated with waterproof impregnation and flame-retardant impregnation before use. Since the water content in the flue gas generated after the combustion of biomass particles is relatively high, the moisture in the flue gas will make the dust sticky and stick to the surface of the filter bag, slowly causing the filter bag to be blocked. By waterproofing the bag body 1, the dust is relatively difficult to stick to the surface of the filter bag, and the bag body 1 selects flame-retardant fiber and undergoes flame-retardant treatment. Even if incompletely burned dust adheres, it will not expand the degree of product combustion. The bag body 1 has good temperature resistance, and by using some ultra-fine fibers, the density of the product after acupuncture is increased to ensure ultra-low emissions of flue gas.

[0026] Among them; the cage frame 3 includes a bottom ring 301, an inner support rod 302, a top ring 303 and a scraper 304. There are several inner support rods 302, and the inner support rods 302 are arranged in a circle on the upper end surface of the bottom ring 301. The scraper 304 is provided with a slot 305. The upper end of the inner support rod 302 passes through the slot 305 and is fixedly connected to the top ring 303. By providing the bottom ring 301 and the top ring 303, it is convenient to install and fix the inner support rod 302. By providing the inner support rod 302, it can be effectively used to support the cloth bag body 1.

[0027] Among them, the cleaning component 5 also includes a cross bar 501, a limit slide bar 503 and a thin plate 505. The two ends of the cross bar 501 are fixedly connected to the inner wall of the scraper 304. A sliding hole 502 is opened in the center of the cross bar 501. The lower end of the limit slide bar 503 is fixedly connected to the hammer head 504. The upper end of the limit slide bar 503 passes through the sliding hole 502 and is connected to the thin plate 505. The limit slide bar 503 is slidably connected to the cross bar 501. The external boiler smoke passes through the bag body 1 and enters the inside of the bag body 1, and then enters the bag body When the gas inside the bag body 1 contacts the thin plate 505, it can effectively exert an upward thrust on the thin plate 505. Due to the different flow rates of the boiler flue gas, the thrust of the airflow on the thin plate 505 is different. When the gas flow rate is large, the gas rises and lifts the thin plate 505. During the upward movement of the thin plate 505, the limiting slide bar 503 and the hammer head 504 are driven to move upward. When the gas flow rate is small, the hammer head 504 falls and hits the bag body 1, which can effectively clean the soot attached to the surface of the bag body 1 to ensure the use effect.

[0028] Wherein, handles 4 are fixedly provided on both sides of the upper end surface of the top ring 303. By providing the handles 4, it is convenient to pull the handles 4 to remove the cage frame 3, and the operation is simple.

[0029] Working principle: by waterproofing the bag body 1, dust is relatively difficult to stick to the surface of the filter bag, and the bag body 1 is made of flame-retardant fiber and flame-retardant treatment. Even if incompletely burned dust adheres, it will not expand the degree of product combustion. The bag body 1 has good temperature resistance. By using some ultra-fine fibers, the density of the product after needle punching is increased to ensure ultra-low emissions of flue gas and increase the service life of the filter bag.

[0030] Furthermore, the external boiler flue gas enters the interior of the bag body 1 after being filtered through the bag body 1, and then when the gas entering the interior of the bag body 1 contacts the thin plate 505, it can effectively exert an upward thrust on the thin plate 505. Due to the different flow rates of the boiler flue gas, the thrust of the airflow on the thin plate 505 is different. When the gas flow rate is large, the gas rises and lifts up the thin plate 505. During the upward movement of the thin plate 505, the limiting slide bar 503 and the hammer head 504 are driven to move upward. When the gas flow rate is small, the hammer head 504 falls and hits the bag body 1, which can effectively clean the soot attached to the surface of the bag body 1 to ensure the use effect.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A new type of dust removal bag for biomass boiler flue gas treatment, characterized in that: It comprises a cloth bag body (1), wherein an expansion ring (2) is arranged at the upper opening of the cloth bag body (1), a cage frame (3) is arranged inside the cloth bag body (1), and a cleaning component (5) is arranged inside the cage frame (3); The cleaning assembly (5) comprises a hammer head (504), and the hammer head (504) is arranged at the center of the lower end inside the cage frame (3).

2. According to the novel biomass boiler flue gas treatment dust removal bag according to claim 1, it is characterized in that: The cloth bag body (1) is made by blending flame-retardant fibers and ultrafine fibers, the flame-retardant fibers and ultrafine fibers both have a temperature resistance of above 220° C. The cloth bag body (1) is subjected to waterproof impregnation treatment and flame-retardant impregnation treatment before use.

3. According to the novel biomass boiler flue gas treatment dust removal bag of claim 1, it is characterized in that: The cage frame (3) comprises a bottom ring (301), inner support rods (302), a top ring (303) and a scraper (304), wherein a plurality of inner support rods (302) are provided and the plurality of inner support rods (302) are arranged in a circular pattern on the upper end surface of the bottom ring (301).

4. A novel biomass boiler flue gas treatment dust removal bag according to claim 3, characterized in that: The scraper plate (304) is provided with a slot (305), and the upper end of the inner support rod (302) passes through the slot (305) and is fixedly connected to the top ring (303).

5. A novel biomass boiler flue gas treatment dust removal bag according to claim 4, characterized in that: The cleaning assembly (5) further comprises a cross bar (501), a limiting sliding bar (503) and a thin plate (505); both ends of the cross bar (501) are fixedly connected to the inner wall of the scraper plate (304); and a sliding hole (502) is provided at the center of the cross bar (501).

6. A novel biomass boiler flue gas treatment dust removal bag according to claim 5, characterized in that: The lower end of the limiting slide bar (503) is fixedly connected to the hammer head (504), the upper end of the limiting slide bar (503) passes through the sliding hole (502) and is connected to the thin plate (505), and the limiting slide bar (503) is slidably connected to the cross bar (501).

7. The novel biomass boiler flue gas treatment dust removal bag according to claim 3 is characterized in that: Handles (4) are fixedly provided on both sides of the upper end surface of the top ring (303).

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