Limestone conveying system of desulfurization pulping system

Abstract

The utility model relates to the technical field of limestone treatment of a thermal power plant, and discloses a limestone conveying system of a desulfurization pulping system, which comprises a limestone block bin, an internal wear-resistant component is arranged in the limestone block bin, and a conveying component is arranged at the top of the limestone block bin. According to the limestone conveying system of the desulfurization slurrying system, the internal wear-resistant assembly is arranged, the space between the two steel bars is firstly filled with limestone to form a certain material buffer area under the action of material flowing, and the rear limestone can preferentially rub with the limestone in the material buffer area; after the stones in the material buffer area are taken away, the rear limestone is naturally filled, so that the wear-resisting effect is achieved, the wear-resisting bottom plate and the protruding blocks are arranged in the middle at intervals, the friction effect is achieved, buffering is facilitated, the use of the high-price wear-resisting layer or the labor and material cost for frequently replacing and repairing the discharging cone body is reduced, and the service life of the discharging cone body is prolonged. And the wear-resistant effect is good.

Description

Technical Field

[0001] This utility model relates to the field of limestone treatment technology in thermal power plants, specifically to a limestone conveying system for desulfurization slurry preparation systems. Background Technology

[0002] The 330MW unit's pulping system uses a wet ball mill. Limestone particles are transported by vehicles to the stone silo, then by a loader to the discharge hopper. The stones in the discharge hopper are fed by a vibrating feeder to a bucket elevator, and then conveyed through a discharge pipe to the limestone block silo. The material in the limestone block silo is then conveyed to the wet ball mill by a belt conveyor. However, over the years of operation, the bottom discharge cone of the limestone block silo has been worn down by limestone particles, frequently resulting in leaks. Furthermore, once a leak occurs, it indicates that the entire cone has been worn thinner and requires complete welding repair. Frequent leaks not only affect on-site hygiene but also, if leaks are not detected and addressed promptly, they can lead to further leakage of all material inside the limestone block silo.

[0003] The existing equipment does not have a material buffer zone at the inclined plate of the limestone block bin discharge cone, which easily causes damage to the inner wall. This requires the use of expensive wear-resistant layers and materials, as well as frequent manual repairs of the discharge cone, resulting in poor performance during use. Improvements are needed. Utility Model Content

[0004] The purpose of this invention is to provide a limestone conveying system for a desulfurization pulping system, in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a limestone conveying system for a desulfurization slurry preparation system, including a limestone block silo, wherein the interior of the limestone block silo is provided with an internal wear-resistant component, and a conveying component is provided on the top of the limestone block silo.

[0006] The conveying assembly includes an inclined guide plate, a conveying pipe, a placement component, a connecting box, a conveying extension pipe, a buffer tank, an air pump, an air pipe, and a buffer pad. The inclined guide plate is fixedly connected to the top of the limestone block silo, the conveying pipe is fixedly connected to the top of the inclined guide plate, the placement component is fixedly connected to the top of the inclined guide plate, the connecting box is fixedly connected to the right side of the placement component, the buffer pad is fixedly connected to the right side of the connecting box, the buffer tank is fixedly connected to the right side of the buffer pad, the air pump is fixedly connected to the top of the buffer tank, the air pipe is fixedly connected to the side of the air pump, and the end of the air pipe away from the side of the air pump is fixedly connected to the top of the conveying extension pipe. An internal fan is provided at the top of the connecting box, and a ventilation slot is provided at the bottom of the connecting box.

[0007] Preferably, the internal wear-resistant components include a limestone block hopper discharge cone inclined plate, a wear-resistant round steel bar, a wear-resistant base plate, and a protrusion. The limestone block hopper discharge cone inclined plate is fixedly connected to the inside of the limestone block hopper. The wear-resistant round steel bar is fixedly connected to the front and rear ends of the limestone block hopper. The wear-resistant base plate is fixedly connected to the top of the limestone block hopper discharge cone inclined plate, and the protrusion is fixedly connected to the top of the wear-resistant base plate.

[0008] Preferably, the wear-resistant base plate and the protrusions are arranged alternately with the wear-resistant round steel.

[0009] Preferably, the top of the delivery extension tube is provided with a circular groove, the diameter of which is adapted to the diameter of the air tube, allowing the air tube to be inserted to adjust the internal pressure, making it convenient to use.

[0010] Preferably, the air tube extends through the top of the delivery extension tube and connects to the inside of the delivery extension tube.

[0011] Preferably, the conveying extension tube is fixedly connected to the end of the conveying tube away from the top of the inclined guide plate.

[0012] Preferably, a slide gate valve is provided at the bottom of the limestone block silo, which can control the discharge.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. The limestone conveying system of this desulfurization slurry preparation system is equipped with internal wear-resistant components. Under the action of material flow, the space between the two steel bars is first filled with limestone to form a certain material buffer. The subsequent limestone will preferentially rub against the limestone inside the material buffer. When the stones in the material buffer are carried away, the subsequent limestone will naturally fill the space, thus achieving a wear-resistant effect. In addition, the wear-resistant base plate and protrusions in the middle spacing also play a friction role, helping to buffer the material. This reduces the labor and material costs of using expensive wear-resistant layers or frequently replacing and repairing the feeding cone, resulting in a better wear-resistant effect.

[0015] 2. The limestone conveying system of this desulfurization slurry preparation system is equipped with conveying components. The high-pressure airflow generated by the internal fan is introduced into the bottom of the limestone storage bin through the pipeline, so that the limestone enters the conveying pipe under the airflow, which serves the purpose of conveying and feeding. When the local pressure in the conveying pipe is too high, the excess gas can enter the buffer gas tank through the gas pipe for temporary storage and regulation, so as to avoid limestone blockage of the pipeline due to pressure fluctuations and ensure stable conveying. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0017] Figure 2 This utility model Figure 1 Enlarged structural diagram at point A in the middle;

[0018] Figure 3 This is a three-dimensional structural diagram of the conveying component of this utility model;

[0019] Figure 4 This utility model Figure 3 Enlarged structural diagram at point B.

[0020] In the diagram: 1. Limestone block silo; 2. Slide valve; 3. Internal wear-resistant components; 301. Limestone block silo discharge cone inclined plate; 302. Wear-resistant round steel; 303. Wear-resistant base plate; 304. Protrusion; 4. Conveying components; 401. Inclined guide plate; 402. Conveying pipe; 403. Placement component; 404. Connecting box; 405. Conveying extension pipe; 406. Buffer air tank; 407. Air pump; 408. Air pipe; 410. Buffer pad. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-4 The present invention provides the following technical solution:

[0023] The limestone conveying system of the desulfurization slurry system includes a limestone block silo 1, an internal wear-resistant component 3 inside the limestone block silo 1, a conveying component 4 on the top of the limestone block silo 1, and a slide valve 2 at the bottom of the limestone block silo 1, which can control the discharge.

[0024] The conveying assembly 4 includes an inclined guide plate 401, a conveying pipe 402, a placement component 403, a connecting box 404, a conveying extension pipe 405, a buffer air tank 406, an air pump 407, an air pipe 408, and a buffer pad 410. The inclined guide plate 401 is fixedly connected to the top of the limestone block silo 1, the conveying pipe 402 is fixedly connected to the top of the inclined guide plate 401, the placement component 403 is fixedly connected to the top of the inclined guide plate 401, the connecting box 404 is fixedly connected to the right side of the placement component 403, the buffer pad 410 is fixedly connected to the right side of the connecting box 404, the buffer air tank 406 is fixedly connected to the right side of the buffer pad 410, and the air pump 407 is fixedly connected to the buffer air tank. At the top of 406, the air pipe 408 is fixedly connected to the side of the air pump 407. The end of the air pipe 408 away from the side of the air pump 407 is fixedly connected to the top of the conveying extension pipe 405. An internal fan is provided at the top of the connecting box 404. A ventilation slot is provided at the bottom of the connecting box 404. A circular groove is provided at the top of the conveying extension pipe 405. The diameter of the circular groove is adapted to the diameter of the air pipe 408, allowing the air pipe 408 to be inserted to adjust the internal pressure, which is convenient to use. The air pipe 408 extends through the top of the conveying extension pipe 405 and is connected to the inside of the conveying extension pipe 405. The conveying extension pipe 405 is fixedly connected to the end of the conveying pipe 402 away from the top of the inclined guide plate 401.

[0025] The internal wear-resistant component 3 includes a limestone block bin discharge cone inclined plate 301, a wear-resistant round steel bar 302, a wear-resistant base plate 303, and a protrusion 304. The limestone block bin discharge cone inclined plate 301 is fixedly connected to the inside of the limestone block bin 1. The wear-resistant round steel bar 302 is fixedly connected to the front and rear ends of the inside of the limestone block bin 1. The wear-resistant base plate 303 is fixedly connected to the top of the limestone block bin discharge cone inclined plate 301. The protrusion 304 is fixedly connected to the top of the wear-resistant base plate 303. The wear-resistant base plate 303 and the protrusion 304 are staggered with the wear-resistant round steel bar 302.

[0026] In use, limestone and other raw materials are fed in through the conveying extension pipe 405. Then, the internal fan located near the top inside the connecting box 404 can be started. The high-pressure airflow generated by the internal fan is introduced into the bottom of the limestone storage bin through the pipe, so that the limestone is carried into the conveying pipe 402 under the airflow, which serves the purpose of conveying and feeding. Several pressure balancing holes are set on the conveying pipe 402 and connected to a small buffer air tank 406. When the local pressure in the conveying pipe 402 is too high, the excess gas can enter the buffer air tank through the air pipe 408 for temporary storage and regulation, so as to avoid limestone clogging the pipe due to pressure fluctuations. In addition, an internal wear-resistant component is installed inside the limestone block bin 1. 3. Wear-resistant round steel bars 302 of a certain height are installed at certain intervals on the inclined plate 301 of the internal limestone block hopper discharge cone. Under the action of material flow, the space between the two steel bars is first filled with limestone to form a certain material buffer. The limestone in the later stage will preferentially rub against the limestone in the material buffer. When the stones in the material buffer are carried away, the limestone in the later stage will naturally fill the space, thus achieving the wear-resistant effect. The wear-resistant base plate 303 and the protrusion 304 set in the middle also play a friction role, helping to buffer the material. This reduces the labor and material costs of using expensive wear-resistant layers or frequently replacing and repairing the discharge cone, resulting in a better wear-resistant effect.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A limestone conveying system for a desulfurization slurry preparation system, comprising a limestone block silo (1), characterized in that: The limestone block silo (1) is equipped with an internal wear-resistant component (3), and a conveying component (4) is provided on the top of the limestone block silo (1). The conveying assembly (4) includes an inclined guide plate (401), a conveying pipe (402), a placement component (403), a connecting box (404), a conveying extension pipe (405), a buffer air tank (406), an air pump (407), an air pipe (408), and a buffer pad (410). The inclined guide plate (401) is fixedly connected to the top of the limestone block silo (1), the conveying pipe (402) is fixedly connected to the top of the inclined guide plate (401), the placement component (403) is fixedly connected to the top of the inclined guide plate (401), and the connecting box (404) is fixedly connected to the placement component. On the right side of (403), the buffer pad (410) is fixedly connected to the right side of the connecting box (404), the buffer air tank (406) is fixedly connected to the right side of the buffer pad (410), the air pump (407) is fixedly connected to the top of the buffer air tank (406), the air pipe (408) is fixedly connected to the side of the air pump (407), and the end of the air pipe (408) away from the side of the air pump (407) is fixedly connected to the top of the delivery extension pipe (405). An internal fan is provided at the top of the connecting box (404), and a ventilation slot is provided at the bottom of the connecting box (404).

2. The limestone conveying system for the desulfurization pulping system according to claim 1, characterized in that: The internal wear-resistant component (3) includes a limestone block bin discharge cone inclined plate (301), a wear-resistant round steel bar (302), a wear-resistant base plate (303), and a protrusion (304). The limestone block bin discharge cone inclined plate (301) is fixedly connected to the inside of the limestone block bin (1). The wear-resistant round steel bar (302) is fixedly connected to the front and rear ends of the limestone block bin (1). The wear-resistant base plate (303) is fixedly connected to the top of the limestone block bin discharge cone inclined plate (301). The protrusion (304) is fixedly connected to the top of the wear-resistant base plate (303).

3. The limestone conveying system of the desulfurization pulping system according to claim 2, characterized in that: The wear-resistant base plate (303) and protrusions (304) are staggered with the wear-resistant round steel (302).

4. The limestone conveying system of the desulfurization pulping system according to claim 1, characterized in that: The top of the delivery extension tube (405) is provided with a circular groove, the diameter of which is adapted to the diameter of the air tube (408).

5. The limestone conveying system for the desulfurization pulping system according to claim 1, characterized in that: The air tube (408) extends through the top of the delivery extension tube (405) and is connected to the interior of the delivery extension tube (405).

6. The limestone conveying system of the desulfurization pulping system according to claim 1, characterized in that: The conveying extension pipe (405) is fixedly connected to one end of the conveying pipe (402) away from the top of the inclined guide plate (401).

7. The limestone conveying system for the desulfurization pulping system according to claim 1, characterized in that: The bottom of the limestone block silo (1) is equipped with a slide valve (2).

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