Flue gas trapping device for biomass boiler

Abstract

The utility model relates to the technical field of biomass boilers, in particular to a smoke trapping device for a biomass boiler, which comprises a shell, a pair of horizontally arranged rollers are rotatably connected in the shell, and a motor for driving the rollers is arranged on the shell. A filter screen belt rotating along with the rotating rollers is arranged on the pair of rotating rollers in a surrounding manner, a filter cavity is defined by the filter screen belt and the inner wall of the shell, an air outlet pipe communicated with the filter cavity is arranged on the shell, a water inlet pipe extending into the filter cavity is arranged on the shell, and a group of nozzles facing the filter screen belt are arranged on the water inlet pipe; the space, located below the filter screen belt, in the shell is an air inlet cavity, an air inlet pipe communicated with the air inlet cavity is arranged on one side of the shell, and a blow-off pipe communicated with the air inlet cavity is arranged at the bottom of the shell. According to the utility model, the filtering part is cleaned in a mechanical manner, compared with manual cleaning, more time and labor are saved, and the risk that the filtering part is easily scalded during manual disassembly and assembly is also avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of biomass boilers, and particularly relates to a dust trapping device for the flue gas of a biomass boiler. Background Art

[0002] At present, the first treatment of the flue gas of a biomass boiler is dust trapping. The conventional dust trapping method is to intercept the soot with a metal filter screen and clean the soot on the metal filter screen regularly. Since there is a lot of soot, if it is not cleaned in time, it will cause the metal filter screen to be blocked, resulting in poor smoke exhaust. Moreover, it is time-consuming and laborious to clean. In addition, the temperature of the flue gas is likely to cause the temperature of the filter screen to rise, and it is easy to be scalded during the process of manually disassembling and installing the filter screen, which poses a certain risk. Summary of the Invention

[0003] The purpose of the utility model is to provide a dust trapping device for the flue gas of a biomass boiler aiming at the defects existing in the prior art. It cleans the filtering component in a mechanized manner, which is more time-saving and labor-saving compared with manual cleaning, and also avoids the risk of being easily scalded during manual disassembly and installation.

[0004] The technical solution of the utility model is: a dust trapping device for the flue gas of a biomass boiler, including a housing, in which a pair of horizontally arranged rollers are rotatably connected, and a motor for driving one of the rollers to rotate is arranged on the housing;

[0005] A filter belt that rotates with the rollers is wound around the pair of rollers, and a filtering chamber is formed between the filter belt and the inner wall of the housing. An air outlet pipe communicated with the filtering chamber is arranged on the housing, and a water inlet pipe extending into the filtering chamber is arranged on the housing. A group of nozzles facing the filter belt are arranged on the water inlet pipe;

[0006] The space in the housing below the filter belt is an air inlet chamber. An air inlet pipe communicated with the air inlet chamber is arranged on one side of the housing, and a sewage discharge pipe communicated with the air inlet chamber is arranged at the bottom of the housing.

[0007] Preferably, annular bosses that cover the outside of the filter belt and are adapted to the shape of the filter belt are respectively arranged on the inner walls of the housing near both sides of the filter belt.

[0008] Preferably, the bottom of the housing is an inclined slope structure, and the sewage discharge pipe is connected to the relatively lower side of the slope structure.

[0009] Preferably, the filter belt is made of metal.

[0010] Compared with the prior art, the utility model has the following advantages: when soot adheres to the filter belt, the motor is started regularly or actively to drive the filter belt to rotate, and then water is supplied into the water inlet pipe. The water flow is sprayed from the nozzle onto the filter belt, washing the soot on the filter belt down, and discharging the sewage through the sewage pipe. It cleans the filtering component in a mechanical way, which is more time-saving and labor-saving than manual cleaning, and also avoids the risk of being scalded easily during manual disassembly and assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is a schematic structural view of the utility model Figure 1 ;

[0012] Figure 2 is a schematic structural view of the utility model Figure 2 ;

[0013] Figure 3 is a schematic vertical half-sectional view of the utility model;

[0014] In the figure: 1, air outlet pipe; 2, housing; 3, sewage pipe; 4, air inlet pipe; 5, motor; 6, water inlet pipe; 7, roller; 8, filter belt; 9, annular boss; 10, filtering chamber; 11, air inlet chamber; 12, nozzle; 13, slope structure. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0015] The following further describes the utility model in conjunction with the drawings and embodiments. Embodiment 1

[0016] As Figures 1 to 3 , a sedimentation and capture device for the flue gas of a biomass boiler includes a housing 2. A pair of horizontally arranged rollers 7 are rotatably connected inside the housing 2, and a motor 5 for driving one of the rollers 7 to rotate is installed on the housing 2.

[0017] A filter belt 8 that rotates with the rollers 7 is wound around the pair of rollers 7, and a filtering chamber 10 is formed between the filter belt 8 and the inner wall of the housing 2. The filter belt 8 is made of metal.

[0018] The housing 2 is provided with an air outlet pipe 1 communicating with the filtering chamber 10, a water inlet pipe 6 extending into the filtering chamber 10 is provided on the housing 2, and a group of nozzles 12 facing the filter belt 8 are provided on the water inlet pipe 6.

[0019] The space inside the housing 2 below the filter belt 8 is an air inlet chamber 11. An air inlet pipe 4 communicating with the air inlet chamber 11 is provided on one side of the housing 2, and a sewage pipe 3 communicating with the air inlet chamber 11 is provided at the bottom of the housing 2.

[0020] Working principle:

[0021] During use, the flue gas enters the intake cavity 11 through the intake pipe 4, then passes through the filter mesh belt 8 into the filter cavity 10, and then is discharged through the outlet pipe 1 into the next treatment process;

[0022] The soot adheres to the filter mesh belt 8. The motor 5 is regularly or actively started to drive the filter mesh belt 8 to rotate. Then, water is supplied into the water inlet pipe 6, and the water flow is sprayed from the nozzle 12 onto the filter mesh belt 8 to wash down the soot on the filter mesh belt 8, and the sewage is discharged through the sewage pipe 3;

[0023] The utility model cleans the filter component in a mechanized manner, which is more time-saving and labor-saving than manual cleaning, and also avoids the risk of being scalded easily during manual disassembly and assembly. Embodiment 2

[0024] This embodiment is further optimized on the basis of the above embodiment. Specifically:

[0025] As Figure 3 , annular bosses 9 that cover the outside of the filter mesh belt 8 and are adapted to the shape of the filter mesh belt 8 are respectively provided on the inner walls of the housing 2 near both sides of the filter mesh belt 8.

[0026] The sealing performance on both sides of the filter mesh belt 8 is increased through the annular bosses 9, effectively preventing the flue gas from overflowing through the gaps between both sides of the filter mesh belt 8 and the inner wall of the housing 2.

[0027] The bottom of the housing 2 is an inclined slope structure 13, and the sewage pipe 3 is connected to the relatively lower side of the slope structure 13 to prevent water from accumulating in the housing, with better sewage discharge effect. The intake pipe 4 is located on the relatively higher side to prevent the sewage flow from falling into it when washing the filter mesh belt 8.

[0028] The utility model is not limited to the above embodiments. Within the knowledge scope of those skilled in the art, various changes can be made without departing from the purpose of the utility model, and the changed content still belongs to the protection scope of the utility model.

Claims

1. A biomass boiler flue gas capture and sinking device, comprising a shell, characterized in that: A pair of horizontally arranged rollers are rotatably connected in the housing, and a motor for driving one of the rollers to rotate is provided on the housing; A filter belt is arranged around the pair of rollers and rotates with the rollers, and a filter cavity is formed by the filter belt and the inner wall of the shell. An air outlet pipe connected to the filter cavity is arranged on the shell, and a water inlet pipe extending into the filter cavity is arranged on the shell. A group of nozzles facing the filter belt are arranged on the water inlet pipe. The space below the filter belt in the shell is an air inlet cavity. An air inlet pipe communicating with the air inlet cavity is arranged on one side of the shell. A sewage discharge pipe communicating with the air inlet cavity is arranged at the bottom of the shell.

2. A biomass boiler flue gas capture device according to claim 1, characterized in that: On the inner walls of the shell body close to the two sides of the filter mesh belt, annular bosses are respectively provided which cover the outer side of the filter mesh belt and match the shape of the filter mesh belt.

3. A biomass boiler flue gas capture device according to claim 1, characterized in that: The bottom of the shell is an inclined slope structure, and the sewage pipe is connected to a relatively lower side of the slope structure.

4. A biomass boiler flue gas capture device according to claim 1, characterized in that: The filter mesh belt is made of metal.

Images