Waste gas purifying and discharging device for biomass gas-fired boiler

Abstract

The utility model discloses a biomass gas boiler waste gas purifying and discharging device which comprises a treatment tank, the left side of the treatment tank is communicated with a gas inlet pipe, the upper end of the treatment tank is communicated with a gas outlet pipe, and a filter screen is installed on the lower portion of the inner side of the treatment tank. A filler cylinder, a spraying piece and an adsorption layer are sequentially arranged above the filter screen from bottom to top, and are all mounted in the treatment tank; an auxiliary cleaning assembly is installed between the filter screen and the filler cylinder and used for stirring filler in the filler cylinder, and a knocking assembly is arranged above the filter screen and used for knocking the filter screen. According to the waste gas purifying and discharging device of the biomass gas boiler, large-particle impurities are filtered in advance through the filter screen, the spraying piece can rapidly clean the filler and the filter screen through cooperation of the auxiliary cleaning assembly and the knocking assembly, and the filtering and purifying effect is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas purification and emission, in particular to a waste gas purification and emission device for a biomass gas boiler. Background Technique

[0002] With the continuous improvement of the global attention to environmental protection, reducing energy consumption and pollutant emissions has become an urgent task. As a renewable energy source, biomass energy has been widely used in the energy field. Biomass gas boilers are important equipment for heating and power generation using biomass energy. However, during their operation, waste gas is generated, which contains pollutants such as particulate matter, sulfur dioxide, and nitrogen oxides. If not effectively purified, it will cause serious pollution to the environment.

[0003] In the patent application with the authorized publication number CN209237599U, the authorized publication date of August 13, 2019, and the name "A Flue Gas Purification Device for a Biomass Gas Boiler", the flue gas is transported into the interior of the filtration box through the intake pipe. The motor and the sprayer are turned on. The sprayer sprays water mist into the gap between the spray plate and the limiting plate through the spray pipe and the spray head. The water mist is evenly mixed with the flue gas to adsorb the dust in the flue gas. At the same time, water is sprayed on the limiting plate through the water pipe by the nozzle, and a water curtain is formed after passing through the edge of the inverted funnel-shaped limiting plate to further filter and adsorb the flue gas. The motor drives the wind plate through the rotating shaft to stir the flue gas inside the filtration box, so that the flue gas is fully mixed with the water mist, enhancing the contact surface between the flue gas and the water mist and increasing the filtration effect.

[0004] In the actual use process of the above device, it is inconvenient to filter larger particle impurities in the flue gas, such as dust and carbon black. If the large particle impurities are not filtered, these impurities may cause problems such as wear and blockage to the subsequent purification equipment, affecting the purification effect and the normal operation of the equipment, and it is also inconvenient to ensure the filtration effect of the larger particle impurities.

[0005] Therefore, we propose a waste gas purification and emission device for a biomass gas boiler to solve the problems raised above. Content of the Utility Model

[0006] 1. Technical problems to be solved by the utility model:

[0007] The purpose of the utility model is to provide a waste gas purification and emission device for a biomass gas boiler to solve the problems in the current market proposed in the above background technique.

[0008] 2. Technical solution:

[0009] To achieve the above object, the utility model provides the following technical solutions: A waste gas purification and emission device for a biomass gas boiler, including a treatment tank. An air inlet pipe is connected to the left side of the treatment tank, and an air outlet pipe is connected to the upper end of the treatment tank. A filter screen is installed at the lower part inside the treatment tank. Above the filter screen, a packing cylinder, a spraying member, and an adsorption layer are arranged in sequence from bottom to top. The packing cylinder, the spraying member, and the adsorption layer are all installed inside the treatment tank;

[0010] An auxiliary cleaning component is installed between the filter screen and the packing cylinder. The auxiliary cleaning component is used to agitate the packing in the packing cylinder, and a knocking component is arranged above the filter screen. The knocking component is used to knock the filter screen.

[0011] Further, the auxiliary cleaning component includes a driving gear and a driven gear disk which are installed in the treatment tank through bearings. A rotating rod is fixedly installed in the middle of the driven gear disk, and the middle of the rotating rod is installed in the packing cylinder through a bearing. And a stirring rod is fixedly installed at the upper end of the rotating rod.

[0012] Through the above technical solution, when the motor at the end of the driving gear starts, the driven gear disk can be driven to rotate, and then the stirring rod is driven to rotate.

[0013] Further, the driving gear and the driven gear disk are meshed with each other, and two ball rods are fixed at the lower end of the driven gear disk.

[0014] Through the above technical solution, the ball rods rotate accordingly.

[0015] Further, the stirring rods are distributed at equal angles on the outside of the rotating rod, and both sides of the stirring rod are designed in a sharp-corner shape.

[0016] Through the above technical solution, the stirring rods can agitate the packing, accelerating the cleaning efficiency of the packing.

[0017] Further, the knocking component includes a rotating plate which is installed on the side wall of the treatment tank through a bearing. A torsion spring is connected between the rotating plate and the treatment tank, and the rotating plate fits on the upper end surface of the filter screen under the action of the torsion spring.

[0018] Through the above technical solution, when the ball rods rotate, the rotating plate can be squeezed, and then it rotates reversely under the action of the torsion spring to knock the filter plate, preventing impurities from adhering.

[0019] 3. Beneficial effects:

[0020] Adopting the technical solution provided by the present utility model, compared with the prior art, the waste gas purification and emission device of the biomass gas boiler of the present utility model pre-filters larger particulate impurities through a filter screen, and the spraying member can quickly clean the packing and the filter screen through the cooperation of the auxiliary cleaning component and the knocking component, ensuring the filtering and purification effect. The specific content is as follows:

[0021] The waste gas of the biomass gas boiler enters the treatment tank through the intake pipe, and larger particulate impurities in the waste gas are pre-excluded through the filter screen to avoid affecting the internal components of the treatment tank and extend the service life. Start the spraying member. The packing in the packing cylinder provides a large surface area, enabling the waste gas to come into full contact with the purification medium (such as liquid absorbent or catalyst), and allowing the waste gas to have a longer residence time in the purification equipment, so that there are more opportunities to interact with the purification medium and improve the purification effect. Subsequently, it is further adsorbed and purified through the adsorption layer and then discharged from the outlet pipe;

[0022] When it is necessary to clean the packing and the filter screen, start the motor at the end of the driving gear and the spraying member. The driving gear drives the driven gear disk and the rotating rod to rotate by means of the meshing action with the driven gear disk. During the rotation of the rotating rod, the stirring rod is driven to rotate synchronously, and the stirring rod stirs the packing in the packing cylinder to facilitate the spraying member to quickly clean the packing. During the rotation of the driven gear disk, the ball rod is driven to squeeze the rotating plate. After the rotating plate is not squeezed by the ball rod, it knocks on the filter screen under the elastic action of the torsion spring, prompting the impurities adhering to the filter screen to quickly fall off, ensuring the filtering effect of the filter screen and the packing. Description of the Drawings

[0023] Figure 1 It is a schematic perspective view of the overall side view of the present utility model;

[0024] Figure 2 It is a schematic perspective view of the side cross-section of the treatment tank of the present utility model;

[0025] Figure 3 It is a schematic perspective view of the side cross-section of the treatment tank of the present utility model from another perspective;

[0026] Figure 4 It is a schematic perspective view of the side view of the auxiliary cleaning component of the present utility model;

[0027] Figure 5 For the present utility model Figure 2 The enlarged structural schematic diagram at position A.

[0028] In the figure: 1, processing tank; 2, intake pipe; 3, outlet pipe; 4, filter screen; 5, packing cylinder; 6, spraying part; 7, adsorption layer; 8, auxiliary cleaning component; 81, driving gear; 82, driven sprocket; 821, rotating rod; 822, stirring rod; 823, ball rod; 9, knocking component; 91, rotating plate; 92, torsion spring. Specific embodiments

[0029] To facilitate the understanding of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0030] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "page", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present invention.

[0031] In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more, unless otherwise specifically defined.

[0032] In the present invention, unless otherwise clearly defined and limited, terms such as "installed", "connected", "connected", "fixed", "provided with", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations. Embodiment

[0033] Please refer to Figures 1-5, a waste gas purification and emission device for a biomass gas boiler, comprising a treatment tank 1. The left side of the treatment tank 1 is connected to an intake pipe 2, and the upper end of the treatment tank 1 is connected to an outlet pipe 3. A filter screen 4 is installed at the lower part inside the treatment tank 1. Above the filter screen 4, a packing cylinder 5, a spraying member 6, and an adsorption layer 7 are sequentially arranged from bottom to top. The packing cylinder 5, the spraying member 6, and the adsorption layer 7 are all installed inside the treatment tank 1;

[0034] The waste gas from the biomass gas boiler enters the treatment tank 1 through the intake pipe 2. It will first pass through the filter screen 4, which removes larger particulate impurities in the waste gas to avoid affecting the internal components of the treatment tank 1 and extend the service life. Start the spraying member 6. The packing in the packing cylinder 5 provides a large surface area, enabling the waste gas to fully contact with a purification medium such as a liquid absorbent or a catalyst, and allowing the waste gas to have a longer residence time in the purification equipment, so that there are more opportunities to interact with the purification medium and improve the purification effect. Subsequently, it is further adsorbed and purified through the adsorption layer 7 and then discharged from the outlet pipe 3;

[0035] An auxiliary cleaning assembly 8 is installed between the filter screen 4 and the packing cylinder 5. The auxiliary cleaning assembly 8 is used to agitate the packing in the packing cylinder 5, and a knocking assembly 9 is arranged above the filter screen 4. The knocking assembly 9 is used to knock the filter screen 4. The auxiliary cleaning assembly 8 includes a driving gear 81 and a driven gear disk 82 installed in the treatment tank 1 by bearings. A rotating rod 821 is fixedly installed in the middle of the driven gear disk 82, and the middle of the rotating rod 821 is installed in the packing cylinder 5 by bearings. The upper end of the rotating rod 821 is fixedly installed with an agitating rod 822. The driving gear 81 and the driven gear disk 82 are meshed with each other, and two ball rods 823 are fixed at the lower end of the driven gear disk 82. The agitating rods 822 are evenly distributed on the outside of the rotating rod 821, and both sides of the agitating rods 822 are designed with sharp corners. The knocking assembly 9 includes a rotating plate 91 installed on the side wall of the treatment tank 1 by bearings. A torsion spring 92 is connected between the rotating plate 91 and the treatment tank 1, and the rotating plate 91 is attached to the upper end face of the filter screen 4 under the action of the torsion spring 92;

[0036] When it is necessary to clean the packing and the filter screen 4, start the motor at the end of the driving gear 81 and the spraying member 6. The driving gear 81 drives the driven gear disk 82 and the rotating rod 821 to rotate by means of meshing with the driven gear disk 82. During the rotation of the rotating rod 821, the agitating rod 822 is driven to rotate synchronously, and the agitating rod 822 agitates the packing in the packing cylinder 5 so that the spraying member 6 can quickly clean the packing. During the rotation of the driven gear disk 82, the ball rod 823 is driven to squeeze towards the rotating plate 91. After the rotating plate 91 is not squeezed by the ball rod 823, it knocks on the filter screen 4 under the elastic action of the torsion spring 92, prompting the impurities adhering to the filter screen 4 to quickly fall, ensuring the filtering effect of the filter screen 4 and the packing.

[0037] Working principle: When using the waste gas purification and emission device for the biomass gas boiler, as Figures 1-5 shown, the waste gas from the biomass gas boiler enters the treatment tank 1 through the intake pipe 2. Larger particulate impurities in the waste gas are removed through the filter screen 4 to avoid affecting the internal components of the treatment tank 1 and extend the service life. The spraying member 6 is started, and the waste gas is adsorbed and purified through the packing in the packing cylinder 5 and the adsorption layer 7, and then discharged from the outlet pipe 3. When it is necessary to clean the packing and the filter screen 4, the motor at the end of the driving gear 81 and the spraying member 6 are started to drive the stirring rod 822 to stir the packing in the packing cylinder 5, so that the spraying member 6 can quickly clean the packing, and the filter screen 4 is knocked by the knocking assembly 9 to prompt the impurities adhering to the filter screen 4 to quickly fall, ensuring the filtering effect of the filter screen 4 and the packing.

[0038] The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0039] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A biomass gas boiler exhaust gas purification and emission device, characterized in that: The invention comprises a treatment tank (1), wherein the left side of the treatment tank (1) is connected to an air inlet pipe (2), and the upper end of the treatment tank (1) is connected to an air outlet pipe (3), and a filter screen (4) is installed at the lower inner part of the treatment tank (1), and a filling cylinder (5), a spraying part (6) and an adsorption layer (7) are arranged above the filter screen (4) in order from bottom to top, and the filling cylinder (5), the spraying part (6) and the adsorption layer (7) are all installed inside the treatment tank (1); An auxiliary cleaning component (8) is installed between the filter screen (4) and the stuffing tube (5), the auxiliary cleaning component (8) being used to stir the stuffing in the stuffing tube (5), and a knocking component (9) is arranged above the filter screen (4), the knocking component (9) being used to knock the filter screen (4).

2. A biomass gas boiler exhaust gas purification and emission device according to claim 1, characterized in that: The auxiliary cleaning assembly (8) comprises a driving gear (81) and a driven gear disc (82) whose bearings are mounted in the processing tank (1); a rotating rod (821) is fixedly mounted in the middle of the driven gear disc (82); a bearing in the middle of the rotating rod (821) is mounted inside the stuffing cylinder (5); and a stirring rod (822) is fixedly mounted on the upper end of the rotating rod (821).

3. A biomass gas boiler exhaust gas purification and emission device according to claim 2, characterized in that: The driving gear (81) and the driven gear plate (82) are meshed with each other, and two ball rods (823) are fixed to the lower end of the driven gear plate (82).

4. The biomass gas boiler exhaust gas purification and emission device according to claim 2 is characterized by: The stirring rods (822) are distributed at equal angles on the outside of the rotating rod (821), and both sides of the stirring rods (822) are designed to be sharp-angled.

5. The biomass gas boiler exhaust gas purification and emission device according to claim 1 is characterized by: The knocking assembly (9) comprises a rotating plate (91) which is mounted on a side wall of the processing tank (1) via a bearing, a torsion spring (92) is connected between the rotating plate (91) and the processing tank (1), and the rotating plate (91) is attached to the upper end surface of the filter screen (4) under the action of the torsion spring (92).

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