Gravity dust-removing, air-locking and ash-discharging device
By designing a gravity-based dust removal and airlock ash unloading device, the pressure of the ash unloading pipeline is monitored and adjusted in real time, solving the problems of unstable pressure and dust blockage during the ash unloading process, thus ensuring the stability and efficiency of blast furnace production.
Patent Information
- Application Number
- CN202520264273.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-19
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2035-02-19
AI Technical Summary
Existing gravity dust removal devices are prone to breakage or ineffective ash removal during the ash unloading process due to unstable pressure. At the same time, the dust collected is moist and sticky under the action of the low temperature and steam at the top of the blast furnace, which can easily clog the ash unloading pipes and affect blast furnace production.
A gravity dust removal and airlock ash discharge device was designed, comprising a gravity dust removal device body, an intermediate ash silo, an ash discharge pipe, an ash discharge receiving silo, and a pressure stabilizing device. The pressure is monitored in real time by a detection device, and the pressure inside the ash discharge pipe is kept stable by a pressurization and depressurization device. Nitrogen gas is used to clean the dust on the inner wall of the pipe.
Stable control of the pressure inside the ash unloading pipeline was achieved, preventing device rupture and blockage, ensuring normal ash unloading, removing dust adhering to the pipeline, and ensuring the continuity of blast furnace production.
Smart Images
Figure CN223921440U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of gravity dust removal in blast furnaces, specifically a gravity dust removal and air-locking ash unloading device. Background Technology
[0002] Currently, blast furnaces in the metallurgical industry all need to be equipped with basic gravity dust collectors. Their main function is to separate dust from the exhaust gas generated by combustion in the blast furnace. The working principle is to suddenly reduce the airflow velocity and change the flow direction. Larger dust particles are separated from the exhaust gas under the action of gravity and inertia. When the amount of dust collected reaches a certain level, it needs to be unloaded through an ash unloading device. During the ash unloading process, it is necessary to keep the internal pressure of the ash unloading device within a reasonable range. Too high a pressure can easily cause the ash unloading device to break, while too low a pressure will result in an insignificant ash unloading effect. In addition, due to the low top temperature of the blast furnace and the steam coming off the top, the dust inside the blast furnace will become moist and sticky, accumulating on the inner wall of the ash unloading pipe, which can easily cause blockage or even caking, making it impossible for gravity dust collectors to unload ash normally and affecting the normal production of the blast furnace. Utility Model Content
[0003] This utility model provides a gravity dust removal and airlock ash unloading device to solve the technical problems mentioned in the background art.
[0004] This utility model provides a gravity dust removal and airlock ash unloading device. The gravity dust removal and airlock ash unloading device includes a gravity dust removal device body, an intermediate ash silo, an ash unloading pipe, an ash unloading receiving silo, and a pressure stabilizing device. The intermediate ash silo is located below the gravity dust removal device body, the ash unloading pipe is located below the intermediate ash silo, the ash unloading receiving silo is connected to the end of the ash unloading pipe, the pressure stabilizing device is connected to the ash unloading pipe, and the pressure stabilizing device includes a pressurizing device and a pressure releasing device. The detection device is located above the ash unloading pipe.
[0005] Furthermore, a first ash discharge valve is provided between the gravity dust removal device body and the intermediate ash silo, and a second ash discharge valve is provided between the intermediate ash silo and the ash discharge pipe.
[0006] Furthermore, the detection device includes a detection platform, a detection chamber, a power supply, a first warning light, a second warning light, a sliding block, a conductive rod, a first terminal block, a second terminal block, and a limiting plate. A square hole is formed on the surface of the ash discharge pipe. The detection chamber is welded to the square hole. A limiting plate is provided at the bottom of the detection chamber, and the size of the limiting plate is smaller than the size of the square hole. Slide grooves are provided on both sides inside the detection chamber. Slide rails are provided at both ends of the sliding block. The conductive rod is located inside the sliding block. Two first terminal blocks are located at the upper end of the slide groove. Two second terminal blocks are located at the lower end of the slide groove. The detection platform is welded to the detection chamber. The power supply, the first warning light, and the second warning light are located on the detection platform. The first warning light is connected to the first terminal block and the power supply. The second warning light is connected to the second terminal block and the power supply.
[0007] Furthermore, the pressurization device includes a nitrogen generator, a nitrogen supply valve, a nitrogen nozzle, and a nitrogen pipeline. The nitrogen generator is located on the left side of the ash discharge pipeline, and the nitrogen nozzle is located inside the ash discharge pipeline. The nitrogen generator is connected to the nitrogen nozzle through the nitrogen supply valve and the nitrogen pipeline. There are multiple nitrogen nozzles.
[0008] Furthermore, the pressure relief device includes a pressure relief valve, a filter screen, and a pressure relief chamber. One end of the pressure relief valve is connected to the ash discharge pipe, and the other end of the pressure relief valve is connected to the pressure relief chamber. The filter screen is disposed at the connection between the pressure relief valve and the ash discharge pipe. Beneficial effects
[0009] A gravity dust collection and airlock ash discharge device includes a gravity dust collection device body, an intermediate ash silo, an ash discharge pipe, an ash discharge receiving silo, and a pressure stabilizing device. The intermediate ash silo is located below the gravity dust collection device body, the ash discharge pipe is located below the intermediate ash silo, the ash discharge receiving silo is connected to the end of the ash discharge pipe, and the pressure stabilizing device is connected to the ash discharge pipe. The pressure stabilizing device includes a pressurizing device and a depressurizing device. A detection device is located above the ash discharge pipe. The detection device can detect the pressure inside the ash discharge pipe in real time, and the pressurizing and depressurizing devices can change the pressure inside the ash discharge pipe in real time to keep the pressure stable. In addition, the pressurizing device can also remove dust adhering to the inner wall of the ash discharge pipe during operation, ensuring the normal operation of the ash discharge. Attached Figure Description
[0010] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0011] Figure 1 This is a first-view structural schematic diagram of a gravity dust removal and airlock ash unloading device provided by this utility model;
[0012] Figure 2 yes Figure 1 A magnified view of a portion of region A in the middle;
[0013] Figure 3 This is a second-view structural schematic diagram of a gravity dust removal and airlock ash unloading device provided by this utility model;
[0014] Figure 4 This is a first-view structural schematic diagram of a partial structure in a gravity dust removal and airlock ash unloading device provided by this utility model;
[0015] Figure 5 This is a cross-sectional schematic diagram of the ash discharge pipe in a gravity dust removal and airlock ash discharge device provided by this utility model;
[0016] Figure 6 This is a schematic diagram of the internal structure of the detection chamber in a gravity dust removal and airlock ash unloading device provided by this utility model;
[0017] Figure 7 This is a first-view structural schematic diagram of the conductive rod in a gravity dust removal and airlock ash unloading device provided by this utility model.
[0018] Figure label:
[0019] 100. Gravity dust collector body; 110. First ash discharge valve; 120. Intermediate ash silo; 130. Second ash discharge valve; 140. Ash discharge pipe; 141. Square hole; 150. Ash discharge receiving silo;
[0020] 200. Detection device; 210. Detection table; 211. Slide rail; 220. Power supply; 230. First warning light; 231. First terminal block; 240. Second warning light; 241. Second terminal block; 250. Sliding block; 251. Slide rail; 260. Conductive rod; 270. Limiting plate; 280. Detection chamber;
[0021] 300. Pressure stabilizing device; 310. Pressurizing device; 311. Nitrogen generator; 312. Nitrogen delivery valve; 313. Nitrogen pipeline; 314. Nitrogen nozzle; 320. Pressure relief device; 321. Pressure relief valve; 322. Filter screen; 323. Pressure relief chamber. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and not for limiting it. Furthermore, it should be noted that, for ease of description, only the parts related to the present utility model are shown in the drawings, not all of the structures. 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.
[0023] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the present invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.
[0024] Please see Figures 1 to 7 The present invention discloses a gravity dust removal and airlock ash discharge device, comprising a gravity dust removal device body 100, an intermediate ash silo 120, an ash discharge pipe 140, an ash discharge receiving silo 150, a detection device 200, and a pressure stabilizing device 300. The intermediate ash silo 120 is disposed below the gravity dust removal device body 100, the ash discharge pipe 140 is disposed below the intermediate ash silo 120, the ash discharge receiving silo 150 is disposed connected to the end of the ash discharge pipe 140, the pressure stabilizing device 300 is connected to the ash discharge pipe 140, and the pressure stabilizing device 300 includes a pressurizing device 310 and a pressure relief device 320. The detection device 200 is disposed above the ash discharge pipe 140.
[0025] Furthermore, when a user needs to work using the gravity dust removal and airlock ash discharge device of this utility model, the user first needs to open the first ash discharge valve 110 and the second ash discharge valve 130. The dust falls from the gravity dust removal device body 100 into the intermediate ash silo 120, then into the ash discharge pipe 140, and finally into the intermediate ash discharge silo from the ash discharge pipe 140. At the same time, during the ash discharge process, the detection device 200 can detect the pressure value inside the ash discharge pipe 140 in real time, and the pressure stabilizing device 300 can stabilize the pressure inside the ash discharge pipe 140 within a suitable range.
[0026] In this embodiment, the detection device 200 includes a detection platform 210, a detection chamber 280, a power supply 220, a first warning light 230, a second warning light 240, a sliding block 250, a guide rod 260, a first terminal block 231, a second terminal block 241, and a limiting plate 270. A square hole 141 is formed on the surface of the ash discharge pipe 140. The detection chamber 280 is welded at the position of the square hole 141. A limiting plate 270 is provided at the bottom of the detection chamber 280. The size of the limiting plate 270 is smaller than the size of the square hole 141. Slide grooves 211 are provided on both sides inside the detection chamber 280. Slide rails 251 are provided at both ends of the sliding block. The guide rod 260... The 0 is located inside the sliding block. The first terminal 231 is located at the upper end of the slide groove 211, and there are two first terminal 231s. The second terminal 241 is located at the lower end of the slide groove 211, and there are two second terminal 241s. The detection table 210 is welded to the detection chamber 280. The power supply 220, the first warning light 230, and the second warning light 240 are located on the detection table 210. The first warning light 230 is connected to the first terminal 231 and the power supply 220. The second warning light 240 is connected to the second terminal 241 and the power supply 220.
[0027] Since the detection chamber 280 and the ash discharge pipe 140 are connected, the pressure inside the detection chamber 280 is the same as the pressure inside the ash discharge pipe 140. The sliding block 250 can slide up and down in the groove 211 of the detection chamber 280. When the pressure inside the ash discharge pipe 140 is within a suitable range, the sliding block 250 is positioned in the middle of the groove 211 inside the detection chamber 280. When the pressure inside the ash discharge pipe 140 exceeds the suitable range, the increased pressure will raise the position of the sliding block 250 in the groove 211, causing the sliding block 250 to slide upwards along the groove 211. At this time, the guide rod 260 installed in the sliding block 250... The circuit is connected to the first terminal 231. At this time, the first warning light 230 will flash to remind the user that the pressure inside the ash discharge pipe 140 is too high. When the pressure inside the ash discharge pipe 140 is lower than the appropriate range, the sliding block 250 will be lowered in the slide groove 211 due to the decrease in pressure. The sliding block 250 will slide down along the slide groove 211. At this time, the wire rod 260 set in the sliding block 250 will be connected to the second terminal 241 to connect the circuit. At this time, the second warning light 240 will flash to remind the user that the pressure inside the ash discharge pipe 140 is too low, so that the pressure inside the ash discharge pipe 140 can be detected in real time.
[0028] In this embodiment, the pressurization device 310 includes a nitrogen generator 311, a nitrogen supply valve 312, a nitrogen nozzle 314, and a nitrogen pipeline 313. The nitrogen generator 311 is located on the left side of the ash discharge pipeline 140, and the nitrogen nozzle 314 is located inside the ash discharge pipeline 140. The nitrogen generator 311 is connected to the nitrogen nozzle 314 through the nitrogen supply valve 312 and the nitrogen pipeline 313. There are multiple nitrogen nozzles 314.
[0029] When the second warning light 240 flashes, the nitrogen generator 311 and the nitrogen supply valve 312 are turned on. The nitrogen generator 311 produces nitrogen, which enters the ash unloading pipe 140 through the nitrogen supply valve 312, the nitrogen pipeline 313 and the nitrogen nozzle 314 to increase the pressure inside the ash unloading pipe 140. At the same time, the nitrogen sprayed out from the nitrogen nozzle 314 can clean the dust adhering to the inner wall of the ash unloading pipe 140.
[0030] In this embodiment, the pressure relief device 320 includes a pressure relief valve 321, a filter screen 322, and a pressure relief chamber 323. One end of the pressure relief valve 321 is connected to the ash discharge pipe 140, and the other end of the pressure relief valve 321 is connected to the pressure relief chamber 323. The filter screen 322 is disposed at the connection between the pressure relief valve 321 and the ash discharge pipe 140.
[0031] When the first warning light 230 flashes, the pressure relief valve 321 is opened. At the same time, the filter screen 322 blocks dust from remaining in the ash discharge pipe 140, and the gas will enter the pressure relief chamber 323 through the filter screen 322, reducing the pressure in the ash discharge pipe 140.
[0032] This utility model provides a gravity dust removal and airlock ash discharge device, comprising a gravity dust removal device body 100, an intermediate ash silo 120, an ash discharge pipe 140, an ash discharge receiving silo 150, and a pressure stabilizing device 300. The intermediate ash silo 120 is located below the gravity dust removal device body 100, the ash discharge pipe 140 is located below the intermediate ash silo 120, the ash discharge receiving silo 150 is connected to the end of the ash discharge pipe 140, and the pressure stabilizing device 300 is connected to the ash discharge pipe 140. The system includes a pressurizing device 310 and a depressurizing device 320. The detection device 200 is located above the ash discharge pipe 140. The detection device 200 can detect the pressure inside the ash discharge pipe 140 in real time. The pressurizing device 310 and the depressurizing device 320 can change the pressure inside the ash discharge pipe 140 in real time to keep the pressure inside the ash discharge pipe 140 stable. In addition, the pressurizing device 310 can also remove dust adhering to the inner wall of the ash discharge pipe 140 during operation to ensure that the ash discharge operation is carried out normally.
[0033] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. A gravity-based dust collection and airlock ash unloading device, characterized in that, include: Gravity dust removal device body; An intermediate ash silo is located below the main body of the gravity dust removal device; An ash discharge pipe is located below the intermediate ash silo; An ash receiving bin is provided, which is connected to the end of the ash unloading pipe; A pressure stabilizing device is connected to the ash discharge pipe, and the pressure stabilizing device includes a pressurizing device and a pressure relieving device; A detection device is installed above the ash discharge pipe.
2. The gravity dust removal and airlock ash unloading device according to claim 1, characterized in that, A first ash discharge valve is provided between the main body of the gravity dust removal device and the intermediate ash silo, and a second ash discharge valve is provided between the intermediate ash silo and the ash discharge pipe.
3. The gravity dust removal and airlock ash unloading device according to claim 1, characterized in that, The detection device includes a detection platform, a detection chamber, a power supply, a first warning light, a second warning light, a sliding block, a conductive rod, a first terminal block, a second terminal block, and a limiting plate. A square hole is formed on the surface of the ash discharge pipe. The detection chamber is welded to the square hole. A limiting plate is provided at the bottom of the detection chamber, and the size of the limiting plate is smaller than the size of the square hole. Slide grooves are provided on both sides inside the detection chamber. Slide rails are provided at both ends of the sliding block. The conductive rod is located inside the sliding block. Two first terminal blocks are located at the upper end of the slide grooves. Two second terminal blocks are located at the lower end of the slide grooves. The detection platform is welded to the detection chamber. The power supply, the first warning light, and the second warning light are located on the detection platform. The first warning light is connected to the first terminal block and the power supply. The second warning light is connected to the second terminal block and the power supply.
4. The gravity dust removal and airlock ash unloading device according to claim 1, characterized in that, The pressurization device includes a nitrogen generator, a nitrogen supply valve, a nitrogen nozzle, and a nitrogen pipeline. The nitrogen generator is located on the left side of the ash discharge pipeline, and the nitrogen nozzle is located inside the ash discharge pipeline. The nitrogen generator is connected to the nitrogen nozzle through the nitrogen supply valve and the nitrogen pipeline. There are multiple nitrogen nozzles.
5. The gravity dust removal and airlock ash unloading device according to claim 1, characterized in that, The pressure relief device includes a pressure relief valve, a filter screen, and a pressure relief chamber. One end of the pressure relief valve is connected to the ash discharge pipe, and the other end of the pressure relief valve is connected to the pressure relief chamber. The filter screen is located at the connection between the pressure relief valve and the ash discharge pipe.