Biomass particle furnace tail gas treatment device

Abstract

The utility model provides a tail gas treatment device of a biomass particle furnace, which comprises a shell provided with a mounting cavity with a closed periphery and two open opposite ends, a first direction defined along the direction of the open end of the mounting cavity and a second direction perpendicular to the first direction; the filter assembly comprises a first filter screen and a second filter screen which are arranged in a spaced mode in the first direction, and the first filter screen and the second filter screen move in a staggered mode in the second direction and are used for alternately filtering tail gas flowing through the mounting cavity; the two cleaning assemblies are arranged in one-to-one correspondence with the first filter screen and the second filter screen, and the two cleaning assemblies are arranged on the movement path of the first filter screen and the movement path of the second filter screen correspondingly so as to make contact with the corresponding cleaning assemblies when the first filter screen and the second filter screen move; the scraper is used for scraping particles on the filter screen. The filter screen solves the technical problem that a filter screen in the prior art is easy to block.

Description

Technical Field

[0001] The utility model relates to the technical field of tail gas treatment, in particular to a biomass pellet furnace tail gas treatment device. Background Art

[0002] Biomass pellet fuel boiler is an environmentally friendly and efficient energy equipment, which plays an important role in waste gas treatment. Biomass fuel can be divided into biomass molded fuel and biomass bulk. Biomass pellet fuel is made of straw, rice stalks, firewood, sawdust, peanut shells, melon seed shells, beet pulp, bark, bagasse, etc., through crushing-mixing-extrusion-drying and other processes, and finally made into granular fuel. Its raw materials are widely distributed and the processing technology is simple. Biomass pellet fuel is known as green coal and is a clean energy. As a boiler fuel, it is economical and has almost no pollution to the environment. It can replace firewood, coal, and natural gas. It is an efficient, energy-saving and environmentally friendly product. Biomass bulk refers to straw. , rice straw, firewood, wood chips, peanut shells, melon seed shells, beet pulp, bark, bagasse, bark wood chips, etc. The cost of this fuel is very low, about one-third of the cost of biomass molded fuel. Burning this fuel requires special combustion boiler equipment and corresponding denitrification equipment to meet the current environmental emission standards; biomass pellet fuel boilers will produce a large amount of exhaust gas while burning the fuel, so the exhaust gas needs to be filtered and purified. Generally, a filter will be installed on the biofurnace pipeline. The filter will block the particles in the exhaust gas while allowing the particles to be adsorbed on the filter, causing the filter to be blocked, and the filter needs to be frequently shut down to replace the filter. Utility Model Content

[0003] In view of the deficiencies in the prior art, the present invention provides a biomass pellet furnace tail gas treatment device, which solves the technical problem of easy clogging of the filter net in the prior art.

[0004] According to the embodiment of the present invention, the present invention adopts the following technical solutions:

[0005] A biomass pellet furnace tail gas treatment device is installed in the furnace pipe, and the tail gas treatment device includes:

[0006] The housing has a mounting cavity that is closed on all sides and open at two opposite ends, wherein a direction along the open end of the mounting cavity is defined as a first direction, and a direction perpendicular to the first direction is defined as a second direction;

[0007] A filter assembly includes a first filter screen and a second filter screen arranged at intervals along a first direction, wherein the first filter screen and the second filter screen move alternately along a second direction to alternately filter exhaust gas flowing through the installation cavity;

[0008] Two cleaning components are arranged in a one-to-one correspondence with the first filter screen and the second filter screen. The two cleaning components are respectively arranged on the movement paths of the first filter screen and the second filter screen so that the first filter screen and the second filter screen can contact the corresponding cleaning components when the first filter screen and the second filter screen move, so as to scrape off particles on the filter screen.

[0009] Preferably, the exhaust gas treatment device further includes a driving component, wherein the driving component is connected to the first filter screen and the second filter screen, and is used to simultaneously drive the first filter screen and the second filter screen to move.

[0010] Preferably, the driving assembly includes: two gears, two racks and a belt, the two gears are rotated on the shell through the belt and are respectively engaged with two racks, and the two racks are respectively arranged on the first filter screen and the second filter screen along the second direction.

[0011] Preferably, the shell is provided with two receiving cavities at intervals along the first direction, both of the receiving cavities are communicated with the installation cavity, and the first filter screen and the second filter screen can extend into or out of the two receiving cavities respectively.

[0012] Preferably, a plurality of baffles are rotatably provided at the connection between the installation cavity and the storage cavity, and the first filter screen and the second filter screen provide driving force for the baffles when they move, so that the baffles rotate relative to the shell and continuously fit with the first filter screen or the second filter screen.

[0013] Preferably, the baffle is provided with an elastic gasket.

[0014] Preferably, the housing is provided with two rotating shafts, the two rotating shafts are connected to the two baffles in a one-to-one correspondence, and the rotating shaft sleeve is provided with a torsion spring, and both ends of the torsion spring abut against the baffle and the housing.

[0015] Preferably, the cleaning assembly includes a brush detachably mounted on the housing.

[0016] Preferably, the housing is provided with two positioning grooves, and the two positioning grooves are arranged in a one-to-one correspondence with the first filter screen and the second filter screen, for positioning the first filter screen and the second filter screen.

[0017] Compared with the prior art, the utility model has the following beneficial effects: the first filter and the second filter alternately filter the exhaust gas in the installation cavity, avoiding the situation where a single filter affects the exhaust gas emission after being blocked, and a cleaning component is provided on the movement path of the first filter and the second filter, which is used to contact the first filter and the second filter when they move, scrape off the particulate matter attached to them, prevent the first filter or the second filter from being blocked, ensure the filtration efficiency, and also extend the service life of the first filter and the second filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic structural diagram of an embodiment of the present utility model;

[0019] Figure 2 It is a cross-sectional view of an embodiment of the present utility model.

[0020] In the above drawings: 1. Shell; 101. Mounting cavity; 2. First filter; 3. Second filter; 3. Brush; 4. Gear; 5. Rack; 6. Belt; 7. Storage cavity; 8. Baffle; 9. Rotating shaft; 10. Positioning groove. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and beneficial effects of the present invention more clearly understood, the technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0022] See also Figures 1 to 2 The utility model provides a biomass pellet furnace tail gas treatment device, which is installed in the furnace pipe. The tail gas treatment device includes:

[0023] The housing 1 has a mounting cavity 101 that is closed on all sides and open at two opposite ends. A direction along the open end of the mounting cavity 101 is defined as a first direction, and a direction perpendicular to the first direction is defined as a second direction.

[0024] A filter assembly includes a first filter screen 2 and a second filter screen 3 spaced apart along a first direction, wherein the first filter screen 2 and the second filter screen 3 alternately move along a second direction to alternately filter the exhaust gas flowing through the installation cavity 101;

[0025] Two cleaning components are arranged in a one-to-one correspondence with the first filter 2 and the second filter 3. The two cleaning components are respectively arranged on the movement paths of the first filter 2 and the second filter 3, so that the first filter 2 and the second filter 3 can contact the corresponding cleaning components when the first filter 2 and the second filter 3 move, so as to scrape off particles from the filter.

[0026] In this embodiment, the housing 1 has an installation cavity 101 that is closed on all sides and open at two opposite ends. The installation cavity 101 is designed to ensure that exhaust gas can flow in smoothly and be discharged after treatment. The first direction is defined as the front-to-back direction, and the second direction is the up-down direction. The first direction is the direction of exhaust gas flow. A filter assembly for filtering exhaust gas is provided in the installation cavity 101. The filter assembly consists of a first filter 2 and a second filter 3. The first filter 2 and the second filter 3 are arranged at intervals along the front-to-back direction and can move alternately along the up-down direction, so that when the first filter 2 is filtering particulate matter in the exhaust gas, the second filter 3 can be prepared for filtering, thereby improving the efficiency and continuity of the exhaust gas treatment device; on the other hand, in order to ensure the effective operation of the filter, each filter is equipped with a cleaning assembly, which is located on the movement path of the first filter 2 and the second filter 3. When the first filter 2 or the second filter 3 moves, the cleaning assembly will contact the first filter 2 or the second filter 3 to remove particulate matter accumulated on its surface, effectively preventing the filter from being blocked, ensuring filtering efficiency and extending the service life of the filter. The staggered movement of the first filter 2 and the second filter 3 ensures the continuity of exhaust gas treatment, avoiding the need to stop and replace the filter due to filter blockage. The cleaning component ensures the long-term continuous and effective operation of the first filter 2 and the second filter 3.

[0027] The exhaust gas treatment device further includes a driving component, which is connected to the first filter screen 2 and the second filter screen 3 and is used to simultaneously drive the first filter screen 2 and the second filter screen 3 to move.

[0028] In this embodiment, the driving component is connected to the first filter 2 and the second filter 3, with the purpose of synchronously driving the movement of the two filters, controlling the staggered movement of the first filter 2 and the second filter 3, and ensuring that at least one filter is in working condition at any time, that is, when the first filter 2 moves downward, it contacts the cleaning component to scrape off particles, and the second filter 3 moves upward to filter the air in the installation cavity 101.

[0029] The driving assembly includes: two gears 4, two racks 5 and a belt 6. The two gears 4 are rotated on the housing 1 through the belt 6 and are respectively engaged with the two racks 5. The two racks 5 are respectively arranged on the first filter 2 and the second filter 3 along the second direction.

[0030] In this embodiment, the two gears 4 are connected together by a belt 6 and are installed on the shell 1. When one of the gears 4 rotates, the other gear 4 will also rotate synchronously through the transmission of the belt 6. Each rack 5 is respectively engaged with a gear 4, and the rack 5 is installed on the first filter 2 and the second filter 3 along the up and down directions. When one of the gears 4 is driven to start rotating, the other gear 4 will also rotate synchronously through the transmission of the belt 6. The rotation of the gear 4 will drive the rack 5 engaged with it to move up and down, driving the first filter 2 or the second filter 3 to move in an up and down staggered manner to achieve the effect of alternating filtration. During the movement of the first filter 2 or the second filter 3, the cleaning component will contact the first filter 2 or the second filter 3, scrape off the particulate matter on the filter, and ensure the cleanliness of the filter.

[0031] The housing 1 is provided with two receiving cavities 7 at intervals along a first direction. Both of the receiving cavities 7 are communicated with the installation cavity 101 . The first filter 2 and the second filter 3 can extend into or out of the two receiving cavities 7 , respectively.

[0032] In this embodiment, the first filter 2 and the second filter 3 can enter and exit the installation cavity 101 through the storage cavity 7, realizing rapid switching and cleaning and improving the filtering efficiency. When one of the filters is not in the filtering state, it can be retracted into the storage cavity 7 to avoid being exposed in the installation cavity 101 so that it is protected in the non-working state.

[0033] Several baffles 8 are rotatably provided at the connection between the installation cavity 101 and the storage cavity 7. When the first filter 2 and the second filter 3 move, they provide driving force to the baffles 8, causing the baffles 8 to rotate relative to the housing 1 and continuously adhere to the first filter 2 or the second filter 3. Furthermore, the baffles 8 are provided with elastic gaskets.

[0034] In this embodiment, two baffles 8 are rotatably provided at the connection between the installation cavity 101 and the storage cavity 7. When the first filter screen 2 and the second filter screen 3 move, driving force is provided to the two baffles 8 to rotate relative to the shell 1 and continuously fit with the opposite end faces of the first filter screen 2 or the second filter screen 3 to prevent unfiltered exhaust gas from leaking directly through the connection. The use of elastic gaskets significantly improves the sealing between the baffle 8 and the filter screen, preventing unfiltered exhaust gas from leaking through the connection, and ensuring that the exhaust gas is completely processed by the filter screen.

[0035] The housing 1 is provided with two rotating shafts 9 , which are connected to the two baffles 8 in a one-to-one correspondence. The rotating shafts 9 are sleeved with torsion springs, and both ends of the torsion springs abut against the baffles 8 and the housing 1 .

[0036] In this embodiment, two rotating shafts 9 are provided on the shell 1, each rotating shaft 9 is connected to a baffle 8, and a torsion spring (not shown) is sleeved on each rotating shaft 9. The two ends of the torsion spring are respectively abutted against the baffle 8 and the shell 1. The torsion spring provides a rebound force when the baffle 8 rotates, ensuring that the baffle 8 can naturally return to its position when there is no external force, and maintain a close fit with the filter. At the same time, the elastic force of the torsion spring enables the baffle 8 to fit more closely when in contact with the first filter 2 or the second filter 3, thereby reducing the risk of exhaust gas leakage through the connection.

[0037] The cleaning assembly includes a brush 3 detachably mounted on the housing 1 .

[0038] In this embodiment, when the first filter 2 and the second filter 3 move up and down along the second direction, the brush 3 contacts the first filter 2 or the second filter 3, scrapes off the particles on the filter, keeps the filter clean, and keeps one of the two filters clean in the non-filtering state.

[0039] The housing 1 is provided with two positioning grooves 10 , which are arranged in a one-to-one correspondence with the first filter screen 2 and the second filter screen 3 , and are used to position the first filter screen 2 and the second filter screen 3 .

[0040] In this embodiment, when the first filter screen 2 and the second filter screen 3 move up and down along the second direction, the positioning groove 10 can ensure that the first filter screen 2 and the second filter screen 3 can stop accurately when reaching the predetermined position to prevent deviation.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not limiting. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A biomass pellet furnace tail gas treatment device, installed in the furnace pipe, characterized in that: The tail gas treatment device comprises: The housing has a mounting cavity that is closed on all sides and open at two opposite ends, wherein a direction along the open end of the mounting cavity is defined as a first direction, and a direction perpendicular to the first direction is defined as a second direction; A filter assembly includes a first filter screen and a second filter screen arranged at intervals along a first direction, wherein the first filter screen and the second filter screen move alternately along a second direction to alternately filter exhaust gas flowing through the installation cavity; Two cleaning components are arranged in a one-to-one correspondence with the first filter screen and the second filter screen. The two cleaning components are respectively arranged on the movement paths of the first filter screen and the second filter screen so that the first filter screen and the second filter screen can contact the corresponding cleaning components when the first filter screen and the second filter screen move, so as to scrape off particles on the filter screen.

2. A biomass pellet furnace tail gas treatment device according to claim 1, characterized in that: The exhaust gas treatment device further includes a driving component, which is connected to the first filter screen and the second filter screen and is used to simultaneously drive the first filter screen and the second filter screen to move.

3. The biomass pellet furnace tail gas treatment device according to claim 2, characterized in that: The driving assembly includes: two gears, two racks and a belt. The two gears are rotated on the housing through the belt and are respectively engaged with the two racks. The two racks are respectively arranged on the first filter screen and the second filter screen along the second direction.

4. A biomass pellet furnace tail gas treatment device according to any one of claims 1 to 3, characterized in that: The shell is provided with two receiving cavities at intervals along a first direction. Both of the receiving cavities are communicated with the installation cavity. The first filter screen and the second filter screen can extend into or out of the two receiving cavities respectively.

5. The biomass pellet furnace tail gas treatment device according to claim 4, characterized in that: A plurality of baffles are rotatably provided at the connection between the installation cavity and the storage cavity. When the first filter screen and the second filter screen move, a driving force is provided to the baffles, so that the baffles rotate relative to the shell and continuously fit with the first filter screen or the second filter screen.

6. The biomass pellet furnace tail gas treatment device according to claim 5, characterized in that: The baffle is provided with an elastic gasket.

7. The biomass pellet furnace tail gas treatment device according to claim 5, characterized in that: The housing is provided with two rotating shafts, which are connected to the two baffles in a one-to-one correspondence, and the rotating shaft sleeve is provided with a torsion spring, and the two ends of the torsion spring abut against the baffle and the housing.

8. The biomass pellet furnace tail gas treatment device according to claim 1, characterized in that: The cleaning component includes a brush detachably arranged on the housing.

9. The biomass pellet furnace tail gas treatment device according to claim 1, characterized in that: The housing is provided with two positioning grooves, and the two positioning grooves are arranged in a one-to-one correspondence with the first filter screen and the second filter screen, and are used for positioning the first filter screen and the second filter screen.

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