Lime feeding device capable of efficiently and stably discharging

Abstract

The utility model provides a lime feeding device capable of efficiently and stably discharging, which relates to the technical field of lime storage and discharging and comprises a stock bin, an electric heat tracing wire and an electric heater electrically connected with the electric heat tracing wire. The device further comprises an automatic material injection assembly, a pressure relief and dust removal assembly, a material level monitoring piece, an activation hopper, a valve, a star-shaped unloader, a hot air conveying assembly and a branch pipe. According to the device, heating of different areas in the stock bin can be achieved through multidirectional hot air conveying in cooperation with the electric heat tracing wires, so that lime is prevented from being affected with damp and agglomerated, meanwhile, the lime is not prone to being affected with damp and agglomerated in the activation hopper, and in addition, follow-up discharging can be evenly and smoothly completed; furthermore, the storage environment of the lime is effectively improved, and the adding and discharging processes of the lime are remarkably optimized.

Description

Technical Field

[0001] This utility model relates to the field of lime storage and unloading technology, and more specifically, to a lime feeding device with high efficiency and stable discharge. Background Technology

[0002] Currently, domestic waste incineration power plants all use lime to achieve acid removal. Regardless of whether it is a semi-dry or dry acid removal system, lime will become damp and clump together if stored in the storage silo for a long time, which will affect subsequent use and make it difficult to discharge the lime. This will increase both maintenance workload and economic losses. Furthermore, it is difficult to control the quantity and efficiency of lime supplied by the acid removal system.

[0003] In summary, there is currently a lack of effective designs to reduce lime clumping due to moisture in the silo and to efficiently transfer it to other processing tanks. Utility Model Content

[0004] The purpose of this invention is to solve the problems mentioned in the background art and to propose a lime feeding device with high efficiency and stable output.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] A high-efficiency and stable lime feeding device includes a silo, an electric heating wire, and an electric heater electrically connected to the electric heating wire.

[0007] It also includes automatic feeding components, pressure relief and dust removal components, material level monitoring components, activated hoppers, valves, rotary valves, hot air conveying components, and branch pipes.

[0008] The automatic feeding component is connected to the top of the silo, and the top of the silo is equipped with a pressure relief and dust removal component;

[0009] The material level monitoring device is fixed inside the silo;

[0010] The activation hopper is fixed at the bottom of the silo and connected to the inside of the silo;

[0011] The valve is fixed at the outlet of the activation hopper, and the activation hopper is flexibly connected to the star-shaped unloader.

[0012] The hot air conveying assembly is installed on one side of the silo, and several branch pipes at different heights are fixed on the hot air conveying assembly, which connect the straight section area of ​​the silo.

[0013] The electric heating wire is wound between the conical area at the bottom of the silo and the lowest branch pipe.

[0014] Furthermore, the star-shaped unloader is connected to the feed hopper of the screw conveyor, and the discharge port of the screw conveyor is connected to the feed hopper of the processing tank.

[0015] The above solution can achieve directional automatic transfer of lime using a screw conveyor.

[0016] Furthermore, the hot air conveying assembly includes a hot air blower and a conveying pipe. The hot air blower is fixed on the ground on one side of the silo and is connected to a conveying pipe fixed on the silo and with a straight section length equal to that of the silo. Several branch pipes connecting to the inside of the silo are fixed on the conveying pipe.

[0017] The above solution uses a hot air conveying assembly to heat different areas inside the straight section of the silo, thereby preventing the lime from becoming damp and clumping.

[0018] Furthermore, the automatic feeding assembly includes a powder conveying pump and a feeding pipe. The powder conveying pump is connected to the feeding pipe, and the feeding pipe is connected to the top of the silo. The powder conveying pump is electrically connected to the material level monitoring device.

[0019] The above solution can realize the automatic addition of lime into the silo and accurately limit the addition amount with the material level monitoring device, as well as the subsequent automatic replenishment.

[0020] Furthermore, the material level monitoring device adopts a material level rotary damper, and material level monitoring devices are fixedly installed in three regions, namely the upper, middle and lower regions, along the height direction of the silo.

[0021] In the above scheme, the upper material level rotary valve can limit the upper limit of material injection, while the middle and lower material level rotary valves can be activated as needed to limit the lower limit and thus replenish material in a timely manner.

[0022] Furthermore, the pressure relief and dust removal assembly includes an automatic pressure relief valve and a dust collector, both of which are fixed on the top of the silo and connected to the interior of the silo.

[0023] When the pressure inside the silo reaches the value preset in the automatic pressure relief valve, the automatic pressure relief valve will be activated to release the pressure. At the same time, the dust collector can prevent dust from overflowing during the filling process and protect the surrounding environment.

[0024] Furthermore, the valve is a butterfly valve.

[0025] The butterfly valve in the above solution opens and closes quickly, can respond rapidly to control system commands, has low operating torque, and is suitable for occasions that require frequent switching. It can quickly control the flow rate of powder. In addition, the butterfly valve is small in size and light in weight, making maintenance and upkeep more convenient.

[0026] Furthermore, the activated hopper is connected to the star-shaped unloader via a flexible rubber joint.

[0027] The above solution uses a flexible rubber joint to connect the activation hopper and the star-shaped unloader, which can reduce the impact of the activation hopper's vibration on the star-shaped unloader.

[0028] Furthermore, an air-assisted bowl is provided on the conical area at the bottom of the hopper, and the air-assisted bowl is connected to an external air source and is distributed alternately with the electric heating tape.

[0029] The above solution uses an air-blowing bowl to blow air during the discharge process, thereby effectively reducing the probability of lime clogging during discharge.

[0030] Furthermore, the hopper is equipped with a ladder and guardrail.

[0031] The above solution allows for convenient maintenance of the pressure relief and dust removal components via ladders and guardrails.

[0032] Compared with the prior art, the beneficial effects of this utility model are:

[0033] Compared to existing technologies, this device can heat different areas in the silo by using multi-directional hot air conveying combined with electric heating wires, thereby preventing lime from becoming damp and clumping. At the same time, the lime in the activation hopper is also less prone to dampness and clumping. In addition, the subsequent discharge can be completed evenly and smoothly, thus effectively improving the lime storage environment and significantly optimizing the lime addition and discharge process. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0035] Figure 2 for Figure 1 Enlarged view of section A (labeled A);

[0036] Figure 3 for Figure 1 Enlarged view of section B (labeled B);

[0037] Figure label:

[0038] 1. Hopper; 2. Material level monitoring device; 3. Activated hopper; 4. Valve; 5. Rotary rotary valve; 6. Screw conveyor; 7. Hot air blower; 8. Conveying pipe; 9. Injection pipe; 10. Automatic pressure relief valve; 11. Dust collector; 12. Flexible rubber joint; 13. Ladder guardrail. Detailed Implementation

[0039] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model. The present utility model will be further described with reference to the accompanying drawings and embodiments:

[0040] like Figures 1 to 3 As shown, a high-efficiency and stable lime feeding device includes a silo 1, an electric heating wire, and an electric heater electrically connected to the heating wire (the principle of electric heating is fully disclosed in the novel lime storage silo proposed in Publication No. CN217023759U, which is prior art and will not be described in detail in this application; the electric heating wire and the electric heater are not shown in the figure).

[0041] It also includes an automatic feeding assembly, a pressure relief and dust removal assembly, a material level monitoring component 2, an activated hopper 3, valves 4, a rotary valve 5, a hot air conveying assembly, and branch pipes.

[0042] The automatic feeding component is connected to the top of the silo 1, and the top of the silo 1 is equipped with a pressure relief and dust removal component;

[0043] The material level monitoring device 2 is fixed inside the silo 1 (specifically, there are two material level rotary dampers fixed inside the silo 1, located in the upper and lower areas respectively. The material level rotary dampers are not easily affected by dust, thus ensuring accurate real-time material level monitoring inside the silo 1).

[0044] The activation hopper 3 is fixed at the bottom of the silo 1 and connected to the interior of the silo 1;

[0045] Valve 4 is fixed on the discharge port of activation hopper 3 (preferably, valve 4 is a butterfly valve, which opens and closes quickly, can respond quickly to control system commands, has low operating torque, is suitable for occasions that require frequent switching, can quickly control the flow rate of powder, and butterfly valve is small in size, light in weight, and easy to maintain and service), and activation hopper 3 is flexibly connected to star discharger 5 (specifically, activation hopper 3 and star discharger 5 are connected by flexible rubber joint 12, which is not shown in the figure);

[0046] The hot air conveying assembly is installed on one side of the silo 1, and several branch pipes connected to the straight section area of ​​the silo 1 and at different heights are fixed on the hot air conveying assembly.

[0047] The electric heating wire is wound between the bottom conical area of ​​the silo 1 and the lowest branch pipe.

[0048] Further optimizations of the above-described embodiments, such as... Figure 1 As shown, the star-shaped unloader 5 is connected to the feed hopper of the screw conveyor 6, and the discharge port of the screw conveyor 6 is connected to the feed hopper of the processing tank (the processing tank is not shown in the figure).

[0049] Further refinements of the embodiments of this utility model, such as... Figure 1As shown, the hot air conveying assembly includes a hot air blower 7 and a conveying pipe 8. The hot air blower 7 is fixed on the ground on one side of the silo 1 and is connected to a conveying pipe 8 that is fixed on the silo 1 and has the same straight section length as the silo 1. Several branch pipes that connect to the inside of the silo 1 are fixed on the conveying pipe 8. The branch pipes are not shown in the figure.

[0050] Further refinements of the embodiments of this utility model, such as... Figure 1 As shown, the automatic feeding assembly includes a powder conveying pump (not shown in the figure) and a feeding pipe 9. The output end of the powder conveying pump is connected to the feeding pipe 9 (the input end of the powder conveying pump is connected to the lime silo, which is not shown in the figure), and the feeding pipe 9 is connected to the top of the silo 1. The powder conveying pump is electrically connected to the material level monitoring device 2.

[0051] In a further optimization of the above embodiment, material level monitoring devices 2 are fixedly installed in three regions, namely upper, middle and lower, along the height direction of the silo 1. The upper material level swivel device can limit the upper limit of material injection, and the middle and lower material level swivel devices can be opened as needed to limit the lower limit and thus replenish material in time.

[0052] Further refinements of the embodiments of this utility model, such as... Figure 1 As shown, the pressure relief and dust removal assembly includes an automatic pressure relief valve 10 and a dust collector 11. Both the automatic pressure relief valve 10 and the dust collector 11 are fixed on the top of the silo 1 and connected to the inside of the silo 1.

[0053] In a further refinement of the embodiment of this utility model, a ladder railing 13 is provided on the hopper 1, which facilitates the maintenance of the automatic pressure relief component.

[0054] It should be noted that the material level monitoring device 2, the activated hopper 3, the valve 4, the star-shaped unloader 5, the screw conveyor 6, the hot air blower 7, the automatic pressure relief valve 10, and the dust collector 11 are all electrically connected to the controller, which is not shown in the figure.

[0055] The working process of this utility model:

[0056] First, the powder conveying pump is controlled by the controller to automatically add lime into the silo 1. When the amount of lime added reaches the height of the material level rotary valve at the top of the silo 1, the material level rotary valve sends a feedback signal to the controller, and the controller then controls the powder conveying pump to stop. After that, when the pressure inside the silo 1 reaches the value preset in the automatic pressure relief valve 10, the automatic pressure relief valve 10 is activated to release the pressure. At the same time, the dust collector 11 can prevent dust from overflowing during the material injection process and protect the surrounding environment.

[0057] After the material is filled into the silo 1, the controller immediately controls the hot air blower 7 to blow hot air at different heights inside the straight section of the silo 1. At this time, the dust collector 11 remains in working condition to dry the lime during the storage process to prevent it from getting damp and clumping. On this basis, electric heating wires are wrapped between the bottom conical area and the lowest branch pipe of the silo 1 for electric heating, which makes the straight end and conical area of ​​the silo 1 less prone to getting damp and clumping. The activation hopper 3 can effectively break the bonding force between the lime through continuous vibration, preventing the material from clumping due to long-term stillness. At the same time, the vibration can also reduce the adhesion between the material and the hopper wall, preventing the material from staying in the hopper for too long and getting damp. Thus, the probability of the lime in the silo getting damp and clumping is greatly reduced.

[0058] When lime needs to be transported to other processing tanks, the butterfly valve is first opened by the controller, and the lime will fall into the star-shaped unloader 5. Then, the star-shaped unloader 5 will be used to uniformly discharge the lime into the screw conveyor 6. Finally, the lime can be efficiently transferred into other processing tanks through the directional transfer of the screw conveyor 6 for subsequent processing and utilization. In this way, the lime can be efficiently and smoothly discharged.

[0059] As the material is discharged, the height of the lime pile in silo 1 will gradually decrease. When the lower limit of the material level monitoring is reached, the material level rotary valve will send a signal and trigger the powder conveying pump to work again to replenish the material. At this time, the probability of the lime in silo 1 becoming damp and clumping is greatly reduced, thereby optimizing the lime storage and unloading process.

[0060] Compared to existing technologies, this device can heat different areas in the silo by using multi-directional hot air conveying combined with electric heating wires, thereby preventing lime from becoming damp and clumping. At the same time, the lime in the activation hopper is also less prone to dampness and clumping. In addition, the subsequent discharge can be completed evenly and smoothly, thus effectively improving the lime storage environment and significantly optimizing the lime addition and discharge process.

[0061] In some embodiments, an air-assisted bowl is provided on the conical area at the bottom of the silo 11, and the air-assisted bowl is connected to an external air source and is distributed alternately with the electric heating tape. This embodiment is not shown in the figure. In this embodiment, the air-assisted bowl can blow air during the discharge process, thereby effectively reducing the probability of lime clogging during the discharge process.

[0062] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The descriptions of the above embodiments and specifications are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency and stable lime feeding device, comprising a silo (1), an electric heating wire, and an electric heater electrically connected to the electric heating wire, characterized in that, It also includes an automatic feeding assembly, a pressure relief and dust removal assembly, a material level monitoring device (2), an activated hopper (3), valves (4), a star-shaped unloader (5), a hot air conveying assembly, and branch pipes. The automatic feeding component is connected to the top of the silo (1), and the top of the silo (1) is equipped with a pressure relief and dust removal component; The material level monitoring device (2) is fixed inside the silo (1); The activation hopper (3) is fixed at the bottom of the silo (1) and connected to the inside of the silo (1); The valve (4) is fixed on the outlet of the activation hopper (3), and the activation hopper (3) is flexibly connected to the star-shaped unloader (5); The hot air conveying assembly is installed on one side of the silo (1), and several branch pipes connected to the straight section area of ​​the silo (1) and at different heights are fixed on the hot air conveying assembly. The electric heating wire is wound between the bottom conical area of ​​the silo (1) and the lowest branch pipe.

2. The high-efficiency stable discharging lime dosing device according to claim 1, characterized in that, The star-shaped unloader (5) is connected to the feed hopper of the screw conveyor (6), and the discharge port of the screw conveyor (6) is connected to the feed hopper of the processing tank.

3. The high-efficiency stable discharging lime dosing device according to claim 1, characterized in that, The hot air conveying assembly includes a hot air blower (7) and a conveying pipe (8). The hot air blower (7) is fixed on the ground on one side of the silo (1) and is connected to a conveying pipe (8) that is fixed on the silo (1) and has the same length as the straight section of the silo (1). Several branch pipes that connect to the inside of the silo (1) are fixed on the conveying pipe (8).

4. The high-efficiency stable discharging lime dosing device according to claim 1, characterized in that, The automatic feeding assembly includes a powder conveying pump and a feeding pipe (9). The powder conveying pump is connected to the feeding pipe (9), and the feeding pipe (9) is connected to the top of the silo (1). The powder conveying pump is electrically connected to the material level monitoring device (2).

5. The lime feeding device with high efficiency and stable output according to claim 4, characterized in that, The material level monitoring device (2) adopts a material level rotary damper, and material level monitoring devices (2) are fixed in the upper, middle and lower regions inside the silo (1) along the height direction.

6. The high-efficiency stable discharging lime dosing device according to claim 1, characterized in that, The pressure relief and dust removal assembly includes an automatic pressure relief valve (10) and a dust collector (11). The automatic pressure relief valve (10) and the dust collector (11) are both fixed on the top of the silo (1) and connected to the inside of the silo (1).

7. The high-efficiency stable discharging lime dosing device according to claim 1, characterized in that, The valve (4) is a butterfly valve.

8. The high-efficiency stable discharging lime dosing device according to claim 1, characterized in that, The activated hopper (3) is connected to the star-shaped unloader (5) via a flexible rubber joint (12).

9. A lime feeding device with high efficiency and stable output according to claim 1, characterized in that, The bottom conical area of ​​the silo (1) is provided with an air-assisted bowl, which is connected to an external air source and is distributed alternately with the electric heating tape.

10. The high-efficiency stable discharging lime dosing device according to claim 1, characterized in that, The silo (1) is equipped with a ladder railing (13).

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