A soda ash dosing device

Abstract

The utility model relates to a kind of baking soda quantitative feeding device, including base and bunker, bunker is installed on base, the top of bunker is equipped with first connecting hose, the bottom of bunker is equipped with second connecting hose, feeding assembly is installed on first connecting hose, discharge pipeline is installed on second connecting hose, control valve is equipped on discharge pipeline, weighing sensor is equipped on bunker, controller is equipped on base, the utility model has the advantages of: baking soda is transported to bunker by feeding assembly, and the weight of baking soda in bunker is monitored in real time by weighing sensor, since bunker bottom end is provided with discharge pipeline connected with flue gas pipeline, therefore, baking soda can be transported to flue gas pipeline by discharge pipeline, so that baking soda can be added to flue gas pipeline quantitatively and directionally, thereby effectively removing acidic pollutants in flue gas, achieving ultra-low emission of flue gas.

Description

Technical Field

[0001] This utility model relates to a sodium bicarbonate metering device. Background Technology

[0002] Waste incinerators are devices used to incinerate waste. The incineration process produces flue gas pollution. Baking soda plays a crucial role in flue gas treatment by chemically removing acidic pollutants such as sulfur dioxide, sulfur trioxide, and hydrogen chloride, thereby eliminating harmful substances and reducing the environmental and health hazards. Therefore, an appropriate amount of baking soda needs to be added to the fluidized bed during incineration. The flue gas from the incinerator is then transported through flue gas ducts to a dust removal and denitrification reactor for further treatment. If the concentration of acidic pollutants in the flue gas still exceeds the minimum emission standards, the lack of a feeding mechanism for adding baking soda to the flue gas ducts prevents complete removal of harmful substances and ensures that ultra-low emission requirements are met, resulting in excessive emissions. Utility Model Content

[0003] The purpose of this invention is to solve the problem of excessive emissions caused by the inability to quantitatively add baking soda into existing flue gas ducts. This invention proposes a quantitative baking soda feeding device that uses a weighing sensor to monitor the weight of baking soda in the hopper in real time, and then delivers the baking soda into the flue gas duct through a discharge pipe. This allows the hopper to quantitatively and directionally add baking soda into the flue gas duct, effectively removing acidic pollutants from the flue gas and achieving ultra-low emissions.

[0004] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: a baking soda quantitative feeding device, installed on a waste incineration system, the waste incineration system including a flue gas duct, the baking soda quantitative feeding device including a base and a hopper, the hopper being installed on the base, the top of the hopper being provided with a first connecting hose, the bottom of the hopper being provided with a second connecting hose, the first connecting hose being provided with a feeding component for feeding baking soda into the hopper, the second connecting hose being provided with a discharge pipe connected to the flue gas duct, the discharge pipe being provided with a control valve, the hopper being provided with a weighing sensor, the base being provided with a controller connected to the weighing sensor, and the feeding component and the control valve being connected to the controller.

[0005] Preferably, the hopper includes a hopper body and at least two mounting plates disposed on the hopper body. The hopper body is mounted on a base via the mounting plates, and the weighing sensor is disposed on the mounting plates.

[0006] Preferably, the hopper includes three mounting plates, which are evenly distributed on the outer side wall of the hopper body, and the mounting plates are provided with reinforcing plates connected to the hopper body.

[0007] Preferably, the base is provided with a mounting seat, and the weighing sensor is disposed between the mounting plate and the mounting seat.

[0008] Preferably, the feeding assembly includes a support, a storage tank, and a dry screw conveyor. The storage tank is disposed at the top of the support, and the dry screw conveyor is disposed on the support below the storage tank. The dry screw conveyor is provided with a connecting pipe connected to the first connecting hose.

[0009] Preferably, the storage hopper is equipped with an air hammer.

[0010] Preferably, the discharge pipe includes a vertical section, an inclined section, and an arc section where the vertical section and the inclined section connect. The control valve is located on the vertical section, and a first flange is provided on the inclined section.

[0011] Preferably, the tilt angle of the inclined portion is 120 to 150°.

[0012] Preferably, the discharge pipe is an integral structure.

[0013] Preferably, the base is provided with a fixing plate, the fixing plate is provided with a through hole for the vertical part to pass through, and the vertical part is provided with a second flange connected to the fixing plate.

[0014] In summary, the advantages of this invention are as follows: Baking soda is fed into the hopper via a feeding assembly, and the weight of the baking soda in the hopper is monitored in real time by a weighing sensor. Since the bottom of the hopper is equipped with a discharge pipe connected to the flue gas duct, the baking soda can be transported into the flue gas duct via the discharge pipe. This allows the hopper to add baking soda quantitatively and directionally into the flue gas duct, effectively removing acidic pollutants from the flue gas and achieving ultra-low emissions. Furthermore, by installing the feeding assembly on the first connecting hose of the hopper and the discharge pipe on the second connecting hose, a flexible connection is formed between the hopper and the feeding assembly and the discharge pipe, effectively reducing the flow and impact of the baking soda. The vibrations from the load improve the accuracy of the weighing data and can meet the needs of different installation environments. In addition, the first and second connecting hoses can play a certain buffering role, avoiding weighing errors caused by external interference, and can provide a certain protection for the load cell, thus improving its service life. Finally, by setting a controller connected to the load cell on the base, the feeding component can be precisely controlled to feed the hopper in real time according to the weight of the hopper, thus realizing automated feeding of the hopper. Similarly, by connecting the control valve to the controller, the opening of the discharge pipe can be precisely controlled, thus realizing automated discharge of the hopper. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings:

[0016] Figure 1 This is a schematic diagram of the structure of a sodium bicarbonate metering device according to the present invention;

[0017] Figure 2 This is a schematic diagram of the structure of the silo in this utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the discharge pipe installed on the flue gas pipe in this utility model.

[0019] Figure label:

[0020] 1. Base, 11. Mounting seat, 12. Fixing plate, 13. Through hole, 2. Hopper, 21. Hopper body, 22. Mounting plate, 23. Reinforcing plate, 3. First connecting hose, 4. Second connecting hose, 5. Feeding assembly, 51. Bracket, 52. Storage tank, 53. Dry screw conveyor, 54. Connecting pipe, 55. Air hammer, 6. Discharge pipe, 61. Control valve, 62. Vertical part, 63. Inclined part, 64. Arc part, 65. First flange, 66. Second flange, 7. Weighing sensor, 8. Controller, 9. Flue gas pipe. Detailed Implementation

[0021] like Figure 1 , Figure 2 and Figure 3 As shown, a baking soda metering device is installed on a waste incineration system. The waste incineration system includes a flue gas duct 9 with a feed inlet. The baking soda metering device includes a base 1 and a hopper 2. The hopper 2 is installed on the base 1. A first connecting hose 3 is provided at the top of the hopper 2, and a second connecting hose 4 is provided at the bottom of the hopper 2. A feeding assembly 5 for feeding baking soda into the hopper 2 is installed on the first connecting hose 3 and is installed at the feed inlet. A discharge pipe 6 connected to the flue gas duct 9 is installed on the second connecting hose 4. A control valve 61 is provided on the discharge pipe 6. A weighing sensor 7 is provided on the hopper 2, and a controller 8 connected to the weighing sensor 7 is provided on the base 1. The feeding assembly 5 and the control valve 61 are both connected to the controller 8.

[0022] Baking soda is fed into the hopper via a feeding assembly, and the weight of the baking soda in the hopper is monitored in real time by a weighing sensor. Because the bottom of the hopper is connected to the flue gas duct, the weight of the hopper can be monitored in real time, allowing for the quantitative and directional addition of baking soda into the flue gas duct. This effectively removes acidic pollutants from the flue gas, achieving ultra-low emissions. Furthermore, the feeding assembly is installed on the first connecting hose of the hopper, and the discharge pipe is installed on the second connecting hose, thus forming flexible connections between the hopper and the feeding assembly and the discharge pipe respectively. This effectively reduces vibration caused by the flow and impact of the baking soda, thereby improving... This design ensures accurate weighing data and can meet the needs of different installation environments. Furthermore, the first and second connecting hoses provide a buffering effect, preventing weighing errors caused by external interference and offering some protection for the weighing sensor, thus extending its lifespan. Finally, by installing a controller connected to the weighing sensor on the base, and since the feeding assembly is connected to the controller, the feeding of the hopper can be precisely controlled in real time based on the weight of the hopper, achieving automated feeding. Similarly, connecting the control valve to the controller allows for precise control of the opening of the discharge pipe, achieving automated discharge from the hopper.

[0023] The hopper 2 includes a hopper body 21 and at least two mounting plates 22 disposed on the hopper body 21. The hopper body 21 is mounted on the base 1 via the mounting plates 22. The weighing sensor 7 is disposed on the mounting plate 22. The hopper is configured as a structure consisting of a hopper body and mounting plates. The hopper body is mounted on the base via the mounting plates, which simplifies the installation structure of the entire hopper and the base. In this embodiment, the mounting plates are mounted on the base with bolts, making the overall installation and disassembly convenient and the connection reliable. Furthermore, by placing the weighing sensor on the mounting plate, the stress point of the weighing sensor can be distributed to the side wall of the hopper body, effectively reducing single-point stress concentration, reducing the impact of local deformation on the inner wall of the hopper, and improving the overall stability. Specifically, the hopper 2 includes three mounting plates 22, which are evenly distributed on the outer wall of the hopper body 21. Each mounting plate 22 has a reinforcing plate 23 connected to the hopper body 21. The arrangement of three mounting plates, evenly distributed on the outer wall of the hopper body 21, ensures the stability of the hopper's installation on the base, thus guaranteeing the stability and accuracy of weighing. Furthermore, the reinforcing plates improve the connection quality of the mounting plates. The base 1 has a mounting seat 11, and the weighing sensor 7 is positioned between the mounting plate 22 and the mounting seat 11. Since the mounting plate bears the weight of the hopper, and the mounting seat is a fixed base, placing the weighing sensor between the mounting plate and the mounting seat allows for precise capture of vertical loads, reducing lateral force or torque interference and improving the stability and accuracy of the weighing sensor measurement.

[0024] The feeding assembly 5 includes a support 51, a storage tank 52, and a dry screw conveyor 53. The storage tank 52 is located at the top of the support 51, and the dry screw conveyor 53 is located on the support 51 below the storage tank 52. The dry screw conveyor 53 is provided with a connecting pipe 54 connected to the first connecting hose 3. The feeding assembly is configured as a support, a storage tank, and a dry screw conveyor. The support can form a single installation unit for the storage tank and the dry screw conveyor, simplifying the installation structure of the entire feeding assembly. Furthermore, baking soda is fed to the dry screw conveyor through the storage tank, and then transported to the first connecting hose through the connecting pipe via the dry screw conveyor. Since the dry screw conveyor can dry the baking soda, it can keep the baking soda entering the silo in a dry state, thus improving the desulfurization and denitrification effect. An air hammer 55 is provided on the storage tank 52. By setting an air hammer on the storage tank 52, the vibration or impact force of the air hammer acts on the wall of the storage tank, which can break up the bridging and clumping of baking soda caused by moisture in real time, ensuring the fluidity of baking soda and ensuring that the storage tank can continuously and stably deliver baking soda to the silo.

[0025] The discharge pipe 6 includes a vertical section 62, an inclined section 63, and an arc-shaped section 64 connecting the vertical section 62 and the inclined section 63. The control valve 61 is mounted on the vertical section 62, and the inclined section 63 has a first flange 65. This structure of vertical, inclined, and arc-shaped sections facilitates the flow of baking soda and improves its discharge efficiency. Mounting the control valve on the vertical section improves its installation quality. Finally, the first flange simplifies the installation structure of the entire discharge pipe on the flue and improves its stability. The inclined angle of the inclined section 63 is 120–150°. This angle allows the baking soda to slide down quickly under its own weight, eliminating the need for an auxiliary power source and reducing energy consumption. It also reduces the risk of clogging in the discharge pipe. In this embodiment, a 145° inclination angle is preferred. The discharge pipe 6 is an integral structure. This integral structure improves the overall installation strength of the discharge pipe, optimizes the installation process between components, and facilitates the integral molding of the discharge pipe. The base 1 is provided with a fixing plate 12, which has a through hole 13 for the vertical part 62 to pass through. The vertical part 62 is provided with a second flange 66 connected to the fixing plate 12. In this embodiment, the second flange is mounted on the fixing plate using bolt assemblies, which improves the fixing quality of the discharge pipe on the base, thereby reducing the shaking of the discharge pipe during discharge and improving the discharge efficiency.

[0026] In addition to the preferred embodiments described above, there are other embodiments of this utility model. Those skilled in the art can make various changes and modifications based on this utility model. As long as they do not depart from the spirit of this utility model, they should all fall within the scope defined by the appended claims.

Claims

1. A sodium bicarbonate metering device, installed on a waste incineration system, the waste incineration system including a flue gas duct (9), characterized in that: The baking soda metering device includes a base (1) and a hopper (2). The hopper (2) is installed on the base (1). The top of the hopper (2) is provided with a first connecting hose (3), and the bottom of the hopper (2) is provided with a second connecting hose (4). The first connecting hose (3) is equipped with a feeding component (5) for feeding baking soda into the hopper (2). The second connecting hose (4) is equipped with a discharge pipe (6) connected to the flue gas pipe (9). The discharge pipe (6) is equipped with a control valve (61). The hopper (2) is equipped with a weighing sensor (7). The base (1) is equipped with a controller (8) connected to the weighing sensor. The feeding component (5) and the control valve (61) are both connected to the controller (8).

2. The sodium bicarbonate metering device according to claim 1, characterized in that: The hopper (2) includes a hopper body (21) and at least two mounting plates (22) disposed on the hopper body (21). The hopper body (21) is mounted on the base (1) via the mounting plates (22), and the weighing sensor (7) is disposed on the mounting plate (22).

3. The sodium bicarbonate metering device according to claim 2, characterized in that: The hopper (2) includes three mounting plates (22), and the three mounting plates (22) are evenly distributed on the outer side wall of the hopper body (21). The mounting plates (22) are provided with reinforcing plates (23) connected to the hopper body (21).

4. The sodium bicarbonate metering device according to claim 3, characterized in that: The base (1) is provided with a mounting seat (11), and the weighing sensor (7) is disposed between the mounting plate (22) and the mounting seat (11).

5. The sodium bicarbonate metering device according to claim 1, characterized in that: The feeding assembly (5) includes a support (51), a storage tank (52) and a dry screw conveyor (53). The storage tank (52) is located at the top of the support (51), and the dry screw conveyor (53) is located on the support (51) below the storage tank (52). The dry screw conveyor (53) is provided with a connecting pipe (54) connected to the first connecting hose (3).

6. The sodium bicarbonate metering device according to claim 5, characterized in that: An air hammer (55) is provided on the storage tank (52).

7. The sodium bicarbonate metering device according to claim 1, characterized in that: The discharge pipe (6) includes a vertical part (62), an inclined part (63) and an arc part (64) connected to the vertical part (62) and the inclined part (63). The control valve (61) is located on the vertical part (62) and the first flange (65) is located on the inclined part (63).

8. The sodium bicarbonate metering device according to claim 7, characterized in that: The tilt angle of the inclined portion (63) is 120 to 150°.

9. A sodium bicarbonate metering device according to claim 7, characterized in that: The discharge pipe (6) is an integral structure.

10. A sodium bicarbonate metering device according to claim 7, characterized in that: The base (1) is provided with a fixing plate (12), the fixing plate (12) is provided with a through hole (13) for the vertical part (62) to pass through, and the vertical part (62) is provided with a second flange (66) connected to the fixing plate (12).

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