Preheating device suitable for sintering mixture
By designing a preheating device including a closed cover, a preheating part and a temperature measurement part, the problem of uneven heating of the sintered mixture in the prior art is solved, uniform heating of the mixture and uniform distribution of the moisture are achieved, and sintering productivity and mineral quality are improved.
Patent Information
- Application Number
- CN202422081643.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-27
- Publication Date
- 2025-07-01
- Estimated Expiration
- 2034-08-27
AI Technical Summary
The existing steam preheating method cannot evenly heat the sintered mixture, resulting in uneven moisture content and affecting the sintering speed and mineral quality.
A preheating device including a closed cover, a preheating part and a temperature measuring part is designed. By setting a plurality of equidistantly arranged preheating parts and a temperature measuring part on the belt machine, combining a heating mechanism and a vibrating mechanism, uniform heating of the mixture and uniform distribution of moisture are achieved.
Effectively heat the sintered mixture evenly to ensure uniform distribution of moisture, improve sintering productivity, reduce fuel consumption, and improve the quality of sintered minerals.
Smart Images
Figure CN223050449U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a preheating device, in particular to a device capable of preheating a mixture before fabric by means of steam preheating, belonging to the technical field of sintered mixture preheating equipment. Background Art
[0002] In the sintering production process, iron-containing raw materials, fuels, and fluxes pass through the batching room and form a mixture in a certain proportion. Before the sintering material enters the trolley during the batching stage, it is necessary to raise the temperature of the mixture above the dew point temperature. This can significantly reduce the over-wetting phenomenon caused by the condensation of water vapor in the material layer, effectively reduce the thickness of the over-wet layer and the resistance of the over-wet layer to the airflow, improve the air permeability of the material layer, and significantly increase the sintering productivity and reduce the fuel consumption. At present, steam preheating is one of the commonly used methods for preheating the mixture. The current steam preheating method can only heat the surface layer of the sintering material, and the bottom layer of the sintered mixture cannot be fully heated. Moreover, it causes a large amount of moisture near the steam pipe and a small amount of moisture far away from the steam pipe in the mixture, resulting in uneven moisture in the mixture, inconsistent sintering speed, and a decline in the quality of sintered ore. Therefore, a preheating device that can uniformly heat the sintered mixture and evenly distribute the moisture is needed. Summary of the Utility Model
[0003] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a preheating device suitable for sintered mixtures, which can reliably and uniformly perform steam preheating treatment on sintered mixtures.
[0004] The problems of the utility model are solved by the following technical solutions:
[0005] A preheating device suitable for sintered mixtures includes an enclosing cover, a preheating part, and a temperature measuring part. The number of the preheating part and the temperature measuring part is multiple. Each preheating part is arranged on the belt conveyor at equal intervals along the transportation direction of the belt conveyor. A temperature measuring part is arranged on one side of each preheating part close to the head end of the belt conveyor, and the temperature measuring part is arranged above the belt conveyor. The enclosing cover is sleeved outside the belt conveyor, and the preheating part and the temperature measuring part are both located inside the enclosing cover.
[0006] For the above-mentioned preheating device suitable for sintered mixtures, the preheating part includes a heating mechanism and a vibrating material mechanism. The heating mechanism is arranged on the ground and is located directly above the belt conveyor. The vibrating material mechanism is arranged on the frame of the belt conveyor and is located between the upper belt and the lower belt.
[0007] The preheating device applicable to sintering mixture described above, the heating mechanism includes a material blocking member and a heating member; the number of the material blocking members is two, and they are symmetrically arranged on both sides of the belt conveyor; the heating member is arranged between the two material blocking members on both sides, and the heating member is located directly above the belt conveyor.
[0008] The preheating device applicable to sintering mixture described above, the material blocking member includes a vertical column, a horizontal plate, a spring, a slider and a baffle; the vertical column is arranged on the ground on one side of the belt conveyor; a vertical slide rail is arranged on the end face of the vertical column close to the belt conveyor, and the chute on the slider is slidably arranged on the slide rail of the vertical column; the horizontal plate is arranged at the top of the vertical column, and a spring is connected between the bottom end of the horizontal plate and the top end of the slider; a baffle is arranged on the vertical end face of the slider close to the belt conveyor; a plurality of balls are embedded on the bottom end face of the baffle, and the balls on the bottom end face of the baffle are in contact with the edge of the upper belt.
[0009] The preheating device applicable to sintering mixture described above, the heating member includes a hollow plate and a steam valve; both ends of the hollow plate are respectively arranged at the top ends of the vertical columns on both sides through brackets; a plurality of nozzles are evenly arranged on the bottom end face of the hollow plate, and the nozzles communicate with the inner cavity of the hollow plate, and the nozzles are aimed at the mixture on the belt directly below it; the steam valve is arranged at the middle position on the top end face of the hollow plate, and the inlet end of the steam valve is communicated with the steam pipeline through a pipeline; the signal input end of the steam valve is connected with the signal output end of the CPU.
[0010] The preheating device applicable to sintering mixture described above, the vibrating material mechanism includes a fixing plate, a lifting plate, a guide rod and an impact cylinder; the fixing plate is arranged on the frame of the belt conveyor, and it is located between the upper belt and the lower belt; guide holes are arranged at the four corners of the fixing plate, and guide rods are respectively arranged in each guide hole; the four corners of the lower end face of the lifting plate are respectively connected with the top ends of the corresponding guide rods; the impact cylinder is arranged on the top end face of the fixing plate, and the end of its piston rod is connected with the bottom end face of the lifting plate; the top end face of the lifting plate is in contact with the bottom end face of the upper belt; the signal input end of the impact cylinder is connected with the signal output end of the CPU; the lifting plate is located directly below the hollow plate.
[0011] The preheating device applicable to sintering mixture described above, the temperature measuring part includes a cross bar and an infrared thermometer; both ends of the cross bar are arranged on the ground through brackets, and the cross bar is located directly above the belt conveyor; the infrared thermometer is arranged at the middle position on the bottom end face of the cross bar; the signal output end of the infrared thermometer is connected with the signal input end of the CPU.
[0012] The utility model effectively performs heat preservation treatment through the closed cover, ensuring that the mixture on the belt conveyor can be fully heat-preserved and preheated; effectively preheats the mixture through the preheating part; and measures the temperature of the mixture on the belt conveyor in real time through the temperature measurement part, and then cooperates with the preheating part to preheat the mixture. Brief Description of the Drawings
[0013] Figure 1 It is a schematic three-dimensional structure diagram of the utility model.
[0014] The list of each label in the figure is as follows: 1. Column, 2. Horizontal plate, 3. Spring, 4. Slide block, 5. Baffle, 6. Hollow plate, 7. Steam valve, 8. Fixed plate, 9. Lifting plate, 10. Guide rod, 11. Cross bar, 12. Infrared thermometer. Detailed Description of the Preferred Embodiment
[0015] Refer to Figure 1 , the utility model includes a closed cover, a preheating part and a temperature measurement part; the number of the preheating part and the temperature measurement part is multiple, each preheating part is arranged on the belt conveyor at equal intervals along the transportation direction of the belt conveyor, a temperature measurement part is arranged on one side of each preheating part close to the head end of the belt conveyor, and the temperature measurement part is arranged above the belt conveyor; when the temperature measurement part monitors that the temperature of the mixture is relatively low and needs to be preheated, the preheating part behind it is started to heat the mixture that is about to pass; the closed cover is sleeved outside the belt conveyor, and the preheating part and the temperature measurement part are both located inside the closed cover; the closed cover can perform heat preservation treatment on the mixture on the belt conveyor and reduce the dissipation of the heat of the mixture.
[0016] The preheating part includes a heating mechanism and a vibrating mechanism; the heating mechanism is arranged on the ground and is located directly above the belt conveyor; the vibrating mechanism is arranged on the frame of the belt conveyor and is located between the upper belt and the lower belt; the heating mechanism is used to provide high-temperature steam for heating the mixture on the belt conveyor; the vibrating mechanism is used to vibrate the mixture, so that the mixture vibrates greatly when passing through the heating mechanism, increasing the gap between the material particles, and the steam can more easily penetrate into the deep part of the mixture layer, ensuring that the steam can fully heat the mixture.
[0017] The heating mechanism includes a material blocking part and a heating part; the number of the material blocking parts is two, and they are symmetrically arranged on both sides of the belt conveyor; the material blocking part is used to block the mixture vibrated by the vibrating mechanism on the belt conveyor to prevent the mixture from being vibrated out of the belt conveyor by the vibrating mechanism; the heating part is arranged between the two side material blocking parts and is located directly above the belt conveyor; the heating part heats the mixture.
[0018] The material baffle includes a vertical column 1, a horizontal plate 2, a spring 3, a slider 4 and a baffle 5; the vertical column 1 is arranged on the ground on one side of the belt conveyor; on the end face of the vertical column 1 close to the belt conveyor, there is a vertically oriented slide rail, and the chute on the slider 4 is slidably arranged on the slide rail of the vertical column 1; the slider 4 can slide on the vertical column 1, the horizontal plate 2 is arranged at the top of the vertical column 1, and a spring 3 is connected between the bottom end of the horizontal plate 2 and the top end of the slider 4; the spring provides a downward force for the slider 4, thereby ensuring that the baffle 5 can closely press against the edge of the belt, and the baffle 5 can effectively block the mixed material vibrated and thrown up by the material vibrating mechanism, avoiding the mixed material from flying out of the belt conveyor; on the vertical end face of the slider 4 close to the belt conveyor, there is a baffle 5; a plurality of balls are inlaid on the bottom end face of the baffle 5, and the balls on the bottom end face of the baffle 5 press against the edge of the upper layer of the belt; the balls can minimize the friction between the baffle 5 and the belt and reduce the wear of the belt.
[0019] The heating member includes a hollow plate 6 and a steam valve 7; both ends of the hollow plate 6 are respectively arranged at the tops of the two side vertical columns 1 through brackets; a plurality of nozzles are evenly arranged on the bottom end face of the hollow plate 6, and the nozzles communicate with the inner cavity of the hollow plate 6, and the nozzles are aligned with the mixed material on the belt directly below; steam enters each nozzle through the hollow plate 6 and then sprays onto the mixed material below, thereby achieving the purpose of steam preheating; the steam valve 7 is arranged at the center position on the top end face of the hollow plate 6, and the inlet end of the steam valve 7 is connected to the steam pipeline through a pipe; the steam valve 7 is used to control the on-off of the steam; only when the temperature of the mixed material is lower than the preset value, the steam valve 7 will be turned on for steam preheating operation; the signal input end of the steam valve 7 is connected to the signal output end of the CPU.
[0020] The material vibrating mechanism includes a fixing plate 8, a lifting plate 9, a guide rod 10 and an impact cylinder; the fixing plate 8 is arranged on the frame of the belt conveyor and is located between the upper layer of the belt and the lower layer of the belt; guide holes are arranged at the four corners of the fixing plate 8, and guide rods 10 are respectively inserted into each guide hole; the four corners of the lower end face of the lifting plate 9 are respectively connected to the tops of the corresponding guide rods 10; the guide rods 10 provide a guiding function for the lifting of the lifting plate 9; the lifting plate 9 vertically rises and falls under the action of the impact cylinder, thereby patting the upper layer of the belt, and the force of patting the belt makes the mixed material on the belt be vertically thrown up, and the steam can more easily penetrate into the deep part of the mixed material; the impact cylinder is arranged on the top end face of the fixing plate 8, and the end of its piston rod is connected to the bottom end face of the lifting plate 9; the top end face of the lifting plate 9 is in contact with the bottom end face of the upper layer of the belt; the signal input end of the impact cylinder is connected to the signal output end of the CPU; the lifting plate 9 is located directly below the hollow plate 6.
[0021] The upper belt refers to the belt located above the idler rollers, and the lower belt refers to the belt located below the idler rollers. The mixed material is transported on the upper belt, and after the upper belt moves to the end, it returns through the lower belt.
[0022] The temperature measurement part includes a cross bar 11 and an infrared thermometer 12; both ends of the cross bar 11 are arranged on the ground through brackets, and the cross bar 11 is located directly above the belt conveyor; the infrared thermometer 12 is arranged at the center position of the bottom end face of the cross bar 11; the infrared thermometer 12 is used to measure the temperature of the mixed material and monitor whether the temperature of the mixed material meets the standard; the signal output end of the infrared thermometer 12 is connected to the signal input end of the CPU.
[0023] In the present utility model, the model of the CPU module is 87C196KC.
[0024] Principle of use: When an infrared thermometer 12 senses that the temperature of the passing mixed material is relatively low, the steam valve 7 on the side of the infrared thermometer 12 close to the end of the belt conveyor is activated, and the nozzle sprays high-temperature steam onto the mixed material below. Moreover, the impact cylinder directly below this steam valve 7 acts to drive the lifting plate 9 to slap the upper belt, causing the mixed material to be thrown up directly below the nozzle. The steam passes through the gaps of the thrown-up mixed material and reaches the bottom end of the mixed material, performing a sufficient preheating treatment on the mixed material. If the temperature of the mixed material monitored by the infrared thermometer 12 is normal, the steam valve 7 and the impact cylinder are not activated.
Claims
1. A preheating device suitable for sintering mixed materials, characterized in that: It includes a closed cover, a preheating part and a temperature measuring part; there are multiple preheating parts and temperature measuring parts, and each preheating part is arranged on the belt conveyor at equal distances along the transportation direction of the belt conveyor, and each preheating part is provided with a temperature measuring part on one side close to the head end of the belt conveyor, and the temperature measuring part is arranged above the belt conveyor; the closed cover is sleeved on the outside of the belt conveyor, and the preheating part and the temperature measuring part are both located inside the closed cover.
2. The preheating device for sintering mixed materials according to claim 1, characterized in that: The preheating part includes a heating mechanism and a vibrating mechanism; the heating mechanism is arranged on the ground and is located directly above the belt conveyor; the vibrating mechanism is arranged on the frame of the belt conveyor and is located between the upper belt and the lower belt.
3. The preheating device for sintering mixed materials according to claim 2, characterized in that: The heating mechanism comprises a material blocking member and a heating member; the number of the material blocking members is two, and they are symmetrically arranged on both sides of the belt conveyor; the heating member is arranged between the material blocking members on both sides, and the heating member is located directly above the belt conveyor.
4. The preheating device for sintering mixed materials according to claim 3, characterized in that: The material blocking member comprises a column (1), a cross plate (2), a spring (3), a slider (4) and a baffle (5); the column (1) is arranged on the ground at one side of the belt conveyor; a vertical slide rail is arranged on the end surface of the column (1) close to the belt conveyor, and a slide groove on the slider (4) is slidably arranged on the slide rail of the column (1); the cross plate (2) is arranged at the top end of the column (1), and a spring (3) is connected between the bottom end of the cross plate (2) and the top end of the slider (4); a baffle (5) is arranged on the vertical end surface of the slider (4) close to the belt conveyor; a plurality of balls are inlaid on the bottom end surface of the baffle (5), and the balls on the bottom end surface of the baffle (5) touch and press the edge of the upper belt.
5. The preheating device for sintering mixed materials according to claim 4, characterized in that: The heating element comprises a hollow plate (6) and a steam valve (7); the two ends of the hollow plate (6) are respectively arranged at the top ends of the columns (1) on both sides through brackets; a plurality of nozzles are evenly arranged on the bottom end surface of the hollow plate (6), and the nozzles are connected to the inner cavity of the hollow plate (6), and the nozzles are aimed at the mixed material on the belt directly below them; the steam valve (7) is arranged at the center position of the top end surface of the hollow plate (6), and the inlet end of the steam valve (7) is connected to the steam pipeline through a pipeline; the signal input end of the steam valve (7) is connected to the signal output end of the CPU.
6. The preheating device for sintering mixed materials according to claim 5, characterized in that: The vibrating mechanism comprises a fixed plate (8), a lifting plate (9), a guide rod (10) and an impact cylinder; the fixed plate (8) is arranged on a frame of the belt conveyor and is located between an upper belt and a lower belt; the four corners of the fixed plate (8) are provided with guide holes, and a guide rod (10) is inserted into each guide hole; the four corners of the lower end surface of the lifting plate (9) are respectively connected to the top ends of the guide rods (10) at corresponding positions; the impact cylinder is arranged on the top end surface of the fixed plate (8), and the end of its piston rod is connected to the bottom end surface of the lifting plate (9); the top end surface of the lifting plate (9) contacts the bottom end surface of the upper belt; the signal input end of the impact cylinder is connected to the signal output end of the CPU; the lifting plate (9) is located directly below the hollow plate (6).
7. The preheating device for sintering mixed materials according to claim 6, characterized in that: The temperature measuring part comprises a cross bar (11) and an infrared thermometer (12); both ends of the cross bar (11) are arranged on the ground through brackets, and the cross bar (11) is located directly above the belt conveyor; the infrared thermometer (12) is arranged at a central position of the bottom end surface of the cross bar (11); and a signal output end of the infrared thermometer (12) is connected to a signal input end of a CPU.