Weighing and adding device for solid waste flue gas purification chemicals

Abstract

The utility model relates to the technical field of garbage treatment, and discloses a solid waste flue gas purification chemical weighing and adding device which comprises a stock bin arranged on a high platform. The material bin is divided into two material storage sub-bins, a turnover shaft is rotationally arranged in the material bin, penetrates through the two material storage sub-bins, is connected with a turnover plate and is driven by a stirring motor; a discharging pipe is connected to the bottom of the storage sub-bin and connected with a weightlessness type metering conveying device located below the high platform, a chemical output pipe of the weightlessness type metering conveying device is connected with one input connector of a venturi injection pipe, and the other input connector of the venturi injection pipe is connected with an air compressor through a compressed air pipe. And an output interface of the venturi injection pipe is connected with the purification pipeline through a blowing pipe. According to the utility model, chemicals are accurately metered, and are blown into the reaction tower through compressed air, so that the labor intensity of workers is reduced, and the flue gas purification effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of waste treatment technology, and in particular to a weighing and dosing device for solid waste flue gas purification chemicals. Background Technology

[0002] During waste incineration, due to the complexity and heterogeneity of the waste composition, many different chemical reactions occur. The resulting flue gas contains not only excess air and carbon dioxide, but also components that are directly or indirectly harmful to human health and the environment, including dust, acidic gases, dioxins, and heavy metal pollution. Among the acidic gases, hydrogen chloride is the most abundant and poses the greatest risk of harm when inhaled. Therefore, the flue gas produced after incineration needs to be purified before being released. Currently, most methods involve manually shoveling activated carbon and calcium hydroxide onto a conveyor belt and feeding them into the reaction tower. This method is labor-intensive, and the amount and speed of material addition are difficult to control precisely. Utility Model Content

[0003] In view of this, the purpose of this utility model is to provide a weighing and dosing device for solid waste flue gas purification chemicals, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model adopts the following technical solution: a solid waste flue gas purification chemical weighing and dosing device, comprising a cylindrical silo, the silo being mounted on a high platform, the bottom of the silo being conical and passing through the high platform; the silo being divided into two storage sub-silos, a rotating shaft being rotatably mounted inside the silo, the rotating shaft passing through the two storage sub-silos, the rotating shaft being connected to rotating plates located in the two storage sub-silos, the rotating shaft being driven by a stirring motor fixed on the silo; a discharge pipe being connected to the bottom of the storage sub-silos, the discharge pipe being connected to a loss-in-weight metering conveying device located below the high platform, the loss-in-weight metering conveying device having a chemical output pipe connected to one input port of a Venturi jet pipe, the other input port of the Venturi jet pipe being connected to an air compressor via a compressed air pipe, and the output port of the Venturi jet pipe being connected to a purification pipeline via a blowing pipe.

[0005] Furthermore, the outer walls of the input and output ports of the Venturi jet pipe are provided with multiple guide grooves at intervals. One side of each guide groove is connected to an inner movable groove. A pipe body is sleeved on the outer side of the input and output ports of the Venturi jet pipe. The inner walls of each pipe body are provided with slide bars that are adapted to and slidably connected to the guide grooves. The inner end of each slide bar is provided with a limiting block that is adapted to and slidably connected to the inner movable groove. A movable flange is provided at the outer end of the pipe body.

[0006] Furthermore, the chemical output pipe, the compressed air pipe, and the blowing pipe are each provided with a plurality of sliding grooves at one end near the Venturi jet pipe. The sliding grooves correspond to the guide grooves of the Venturi jet pipe, and a fixed flange is provided at the inner end of the sliding groove. The fixed flange and the movable flange can be connected by bolts.

[0007] Furthermore, a sealing gasket is provided on the inner wall of the tube.

[0008] Furthermore, the port sidewalls of the chemical output pipe, the compressed air pipe, and the blowing pipe are provided with a fixing groove with an arc-shaped longitudinal section, and a sealing ring is provided in the fixing groove. The end sidewalls of the input and output interfaces of the Venturi jet pipe are provided with an arc-shaped groove.

[0009] Beneficial effects

[0010] Compared to existing technologies, this invention offers at least the following advantages: This invention uses a loss-in-weight metering and conveying device to precisely measure activated carbon and calcium hydroxide chemicals, allowing for adjustment of the chemical addition amount and ensuring more accurate and rational dosage. By blowing the chemicals into the reaction tower with compressed air, manual labor intensity is reduced, and the activated carbon is more evenly distributed within the reaction tower, better adsorbing various harmful components in the flue gas. This also increases the contact area between calcium hydroxide and acidic gases, improving the flue gas purification effect. The interface design of the Venturi jet pipe, as well as the interfaces of the chemical output pipe, the compressed air pipe, and the blowing pipe, facilitates disassembly and cleaning of the Venturi jet pipe, preventing chemicals from adhering and accumulating inside, thus avoiding a smaller inner diameter and impacting the chemical delivery volume and stability. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model.

[0012] Figure 2 This is a schematic diagram of the connection structure of the Venturi jet tube of this utility model.

[0013] Figure 3 This is a schematic diagram of the connection structure between the Venturi jet pipe and the chemical output pipe / compressed air pipe / blowing pipe of this utility model.

[0014] Figure 4 This utility model Figure 4 A schematic diagram of the longitudinal cross-section structure.

[0015] Figure 5 This is a schematic diagram of the connection end structure of the chemical output pipe / compressed air pipe / blowing pipe of this utility model.

[0016] Figure 6This is a schematic diagram of the guide groove and inner movable groove of the Venturi jet tube of this utility model.

[0017] Figure 7 This is a schematic diagram of the cross-sectional structure of the Venturi jet tube of this utility model.

[0018] Figure 8 This is a schematic diagram of the end structure of the Venturi jet tube of this utility model.

[0019] Figure 9 This is a schematic diagram of the structure of the sliding sleeve of this utility model.

[0020] The diagram is labeled as follows: 1-High platform; 2-Hopper; 20-Storage sub-hopper; 21-Loading port; 22-Agitator motor; 23-Tilting shaft; 24-Tilting plate; 25-Crushing blade; 26-Conical bottom; 27-Discharge pipe; 3-Loss-in-weight metering conveying device; 30-Chemical output pipe; 4-Air compressor; 5-Purification pipe; 6-Venturi jet pipe; 60-Guide groove; 61-Pipe body; 62-Modible flange; 63-Sliding strip; 64-Sealing gasket; 65-Inner movable groove; 66-Fixing hole; 7-Compressed air pipe; 8-Blowing pipe; 9-Fixing flange; 10-Sealing ring; 11-Fixing groove; 12-Groove; 13-Sliding groove. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, a detailed description is provided below in conjunction with the accompanying drawings and specific embodiments. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0022] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0024] See Figures 1-9 This embodiment provides a solid waste flue gas purification chemical weighing and dosing device, including a cylindrical silo 2, which is mounted on a high platform 1, which is mounted on a support frame (not shown in the figure). The bottom of the silo 2 has a conical structure 26 that extends downward through the high platform 1. The silo is divided in half into two storage sub-silos 20, which store activated carbon and calcium hydroxide respectively.

[0025] Activated carbon and calcium hydroxide are prone to clumping during storage due to moisture absorption or prolonged static storage, which affects discharge. Therefore, in this embodiment, a horizontally rotating tilting shaft 23 is installed within the silo 2. The tilting shaft 23 passes through two storage sub-silos 20 and is rotatably connected to the side walls of the two storage sub-silos 20. The tilting shaft 23 is connected to tilting plates 25 located in the two storage sub-silos 20, and the tilting plates 25 have a trapezoidal structure. The tilting shaft 23 is driven by a stirring motor 22 fixed to the silo 2. When the stirring motor 22 operates, it drives the tilting plates 25 to rotate, agitating the chemicals inside the storage sub-silos 20, loosening any clumped chemicals, and facilitating discharge.

[0026] Preferably, the tilting plate 25 is spaced apart with multiple crushing blades 25 to chop up agglomerated chemicals. Furthermore, the tilting plate has through-holes, through which powder falls and is screened, while large agglomerates are retained on the tilting plate 25 and broken up during subsequent tilting. The through-holes and crushing blades 25 further improve the fineness of the chemicals, further preventing clogging and agglomeration. The finer chemicals improve the effect and efficiency of solid waste purification.

[0027] The bottom of the storage silo 20 is connected to a discharge pipe 27, which is connected to a loss-in-weight metering conveying device 3 located below the high platform 1. The chemical output pipe 30 of the loss-in-weight metering conveying device 3 is connected to one input port of a Venturi jet pipe 6. The other input port of the Venturi jet pipe 6 is connected to an air compressor 4 via a compressed air pipe 7. The output port of the Venturi jet pipe 6 is connected to a purification pipe 5 via a blowing pipe 8. In this embodiment, the purification pipe 5 is connected to the reaction tower.

[0028] For ease of disassembly and cleaning of the Venturi jet pipe, in this embodiment, the outer walls of the input and output ports of the Venturi jet pipe 6 are provided with multiple guide grooves 60 at intervals. An inner movable groove 65 is connected to the inner side of each guide groove 60 and is located inside the side wall of the Venturi jet pipe. A pipe body 61 is fitted onto the outer side of both the input and output ports of the Venturi jet pipe. The inner wall of each pipe body 61 is provided with a sliding strip 63 that is adapted to and slidably connected to the guide groove 60. The inner end of each sliding strip 63 is provided with a limiting block 67 that is adapted to and slidably connected to the inner movable groove 65. A movable flange 62 is provided at the outer end of each pipe body 61.

[0029] The chemical output pipe 30, the compressed air pipe 7, and the blowing pipe 8 are each provided with a plurality of sliding grooves 13 at one end near the Venturi jet pipe 6. The sliding grooves 13 correspond to the guide grooves 60 of the Venturi jet pipe and have the same width. A fixed flange 9 is provided at the inner end of the sliding groove 13. The fixed flange 9 and the movable flange 62 can be connected by bolts.

[0030] Preferably, a sealing gasket 64 is provided on the inner side wall of the tube body 61.

[0031] In this embodiment, the sidewalls of the chemical output pipe 30, the compressed air pipe 7, and the blowing pipe 8 are provided with a fixing groove 11 with an arc-shaped longitudinal section. A sealing ring 10 is provided in the fixing groove 11. The sidewalls of the input and output interfaces of the Venturi jet pipe 6 are provided with an arc-shaped groove 12.

[0032] When installing the Venturi jet pipe 6, align the ports of the chemical output pipe 30, the compressed air pipe 7, and the blowing pipe 8 with the input and output ports of the Venturi jet pipe 6, so that the sealing ring 10 falls into the fixed groove 11 and the recess 12, sealing the connection of the interface; at the same time, align the guide groove 60 with the sliding groove 13, and slide the pipe body on the Venturi jet pipe 6 along the guide groove 60 and the sliding groove 13 until the limiting block 67 is engaged with the outer side wall of the inner movable groove. At this time, the movable flange 62 is close to the fixed flange 9, and the pipe body 61 surrounds the connection part of the Venturi jet pipe with the chemical output pipe 30, the compressed air pipe 7, or the blowing pipe 8, and connect the movable flange 62 and the fixed flange 9 with bolts, thereby connecting the Venturi jet pipe with the three pipes: the chemical output pipe 30, the compressed air pipe 7, and the blowing pipe 8. The pipe body slides to the connection points between each pipe and the Venturi jet pipe, serving as a quick pre-connection in the connection between the Venturi jet pipe and the chemical output pipe 30, the compressed air pipe 7, and the blowing pipe 8. After the Venturi jet pipe is pre-connected to each pipe, the movable flange and the fixed flange are then fixed. The design of the pipe body 61 enhances the stability of the connection between the Venturi jet pipe 6 and each pipe, and the elastic sealing gasket ensures tight contact between the pipe body and the Venturi jet pipe 6 and each pipe, further preventing leakage at the connection points.

[0033] In practical implementation, this invention uses a loss-in-weight metering and conveying device to accurately measure activated carbon and calcium hydroxide chemicals, allowing for adjustment of the chemical addition amount and ensuring more accurate and reasonable dosage. Compressed air is used to blow the chemicals into the reaction tower, reducing manual labor intensity and helping to evenly distribute the activated carbon within the tower for better adsorption of various harmful components in the flue gas. This also helps increase the contact area between calcium hydroxide and acidic gases, improving the flue gas purification effect. The interface design of the Venturi jet pipe, as well as the interfaces of the chemical output pipe, compressed air pipe, and blowing pipe, facilitates disassembly and cleaning of the Venturi jet pipe, preventing chemicals from adhering and accumulating inside, thus avoiding a smaller inner diameter and impacting the chemical delivery volume and stability.

[0034] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A chemical weighing and dosing device for solid waste flue gas purification, characterized in that, The device includes a cylindrical silo mounted on a high platform. The bottom of the silo is conical and passes through the high platform. The silo is divided into two storage sub-silos. A rotating shaft is rotatably mounted inside each storage sub-silo, passing through both storage sub-silos. The rotating shaft is connected to rotating plates located in the two storage sub-silos and is driven by a stirring motor fixed to the silo. A discharge pipe is connected to the bottom of each storage sub-silo, and the discharge pipe is connected to a loss-in-weight metering conveying device located below the high platform. The loss-in-weight metering conveying device has a chemical output pipe connected to one input port of a Venturi jet pipe. The other input port of the Venturi jet pipe is connected to an air compressor via a compressed air pipe. The output port of the Venturi jet pipe is connected to a purification pipeline via a blowing pipe.

2. The solid waste flue gas purification chemical weighing and dosing device according to claim 1, characterized in that, The outer walls of the input and output ports of the Venturi jet pipe are provided with multiple guide grooves at intervals. One side of each guide groove is connected to an inner movable groove. The outer sides of the input and output ports of the Venturi jet pipe are respectively fitted with pipe bodies. The inner walls of each pipe body are respectively provided with slide bars that are adapted to and slidably connected to the guide grooves. The inner ends of the slide bars are provided with limiting blocks that are adapted to and slidably connected to the inner movable grooves. The outer ends of the pipe body are provided with movable flanges.

3. The solid waste flue gas purification chemical weighing and dosing device according to claim 2, characterized in that, The chemical output pipe, the compressed air pipe, and the blowing pipe are each provided with a plurality of sliding grooves at one end near the Venturi jet pipe. The sliding grooves correspond to the guide grooves of the Venturi jet pipe, and a fixed flange is provided at the inner end of the sliding groove. The fixed flange and the movable flange can be connected by bolts.

4. The solid waste flue gas purification chemical weighing and dosing device according to claim 2, characterized in that, A sealing gasket is provided on the inner wall of the tube.

5. The solid waste flue gas purification chemical weighing and dosing device according to claim 1, characterized in that, The chemical output pipe, the compressed air pipe, and the blowing pipe have a fixing groove with an arc-shaped longitudinal section on their port sidewalls, and a sealing ring is provided in the fixing groove. The input and output ports of the Venturi jet pipe have an arc-shaped groove on their end sidewalls.

Images