Auxiliary feeding mechanism for blast furnace

Abstract

The utility model discloses an auxiliary feeding mechanism for a blast furnace, which belongs to the technical field of steel manufacturing and comprises a supporting seat, a conveying groove is fixedly mounted on one side above the supporting seat, a cross frame is fixedly mounted on the other side above the supporting seat, and a feeding mechanism capable of feeding materials to blast furnaces with different heights is arranged on the conveying groove. The number of the feeding mechanisms and the number of the discharging grooves are four, the four discharging grooves are arranged at equal intervals, feeding work can be conducted on blast furnaces of four heights, using is more flexible, in the feeding process, a brush plate continuously sweeps the inner wall of a conveying groove, waste caused by the fact that materials adhere to the inner wall of the conveying groove is avoided, in the feeding process, a dust collector works, and the feeding efficiency is improved. Dust floating at the inlet of the blast furnace is sucked away through the dust suction head, materials are filtered through the filtering holes in the surface of the dust suction head, large materials falling out of the discharging groove are prevented from being sucked away, and using is more environmentally friendly.

Description

Technical Field

[0001] The utility model belongs to the technical field of steel manufacturing, in particular to an auxiliary feeding mechanism for a blast furnace. Background Art

[0002] The blast furnace is an iron-making equipment and the first process in steel smelting. That is, iron ore must be smelted in a blast furnace to obtain pig iron blocks for various purposes, or molten iron for steelmaking. During blast furnace production, a loading mechanism is required to assist in delivering materials from the top of the blast furnace into the interior of the blast furnace.

[0003] Among them, after searching, it was found that there is an application number CN202121339087.7, which discloses an automatic feeding system for a blast furnace, including a material box, a frame and a conveyor belt. A frame is fixed on one side of the material box, and a cleaning mechanism is provided. A water pump is installed on the side of the water tank, and a water distribution pipe is installed at the output end of the water pump, which is located on the side of the conveyor belt. Multiple nozzles are installed on the nozzle head, and the direction of the nozzle is facing the conveyor belt. When the operator starts the water pump, the water pump can draw water inside the water tank into the water distribution pipe, and spray it through the multiple nozzles installed on the water distribution pipe. It can be used to clean the side conveyor belt and objects on its surface, thereby realizing the convenience of the feeding system in cleaning the surface of the conveyor belt. By providing a hopper structure, two sets of docking grooves matching the positioning columns are processed on the bottom surface of the connecting bucket. When in use, the operator aligns the docking grooves on the connecting bucket with the positioning columns on the base. After plugging in, the connecting bucket can be installed on the surface of the conveyor belt by installing the fixing cap on the positioning column through threaded cooperation. If the connecting bucket is damaged and needs to be replaced later, the operator only needs to twist the fixing cap to remove it from the positioning column. After disassembly, the connecting bucket can be directly removed from the surface of the base for replacement, thereby realizing the convenience of replacing the connecting bucket of the feeding system. By providing an auxiliary structure, the top end of the auxiliary shaft contacts the upper end of the inner surface of the conveyor belt, and multiple groups of auxiliary shafts are combined and lined on the top end of the inner surface of the conveyor belt, which can assist the conveyor belt to lift the materials transported on the surface of the conveyor belt to prevent the conveyor belt from slowly deforming due to excessive load, so as to affect the later use. The rotatable design of the auxiliary shaft enables the auxiliary shaft to rotate with the movement of the conveyor belt, which can reduce the friction when the auxiliary shaft contacts the conveyor belt, thereby increasing the service life of the conveyor belt of the feeding system.

[0004] However, after research, it was found that: the device uses a conveyor belt to drive the hopper to move to achieve the purpose of loading. When the hopper moves to the top of the conveyor belt, the material inside the hopper will be thrown into the blast furnace, and it is impossible to load blast furnaces at different heights. It is not flexible enough to use. In addition, during blast furnace production, the weight of the material needs to be controlled to ensure the quality of the products produced. The device cannot continuously weigh and load the loading materials, and the use effect is not good enough. During the unloading process, a lot of dust will be raised to pollute the air. The device cannot handle the floating dust, so a new device is provided to solve this problem. Utility Model Content

[0005] The purpose of the utility model is to provide an auxiliary feeding mechanism for a blast furnace in order to solve the above-mentioned problem.

[0006] The technical solution adopted by the utility model is as follows: an auxiliary feeding mechanism for a blast furnace, comprising a support seat, a conveying trough is fixedly installed on one side above the support seat, and a horizontal frame is fixedly installed on the other side above the support seat;

[0007] The conveying trough is provided with a feeding mechanism which can feed materials to blast furnaces at different heights.

[0008] Wherein, the loading mechanism includes a conveyor belt, a scraper, a brush plate, a discharge trough, a sealing plate and a servo electric cylinder, a conveyor belt is installed inside the conveying trough, a scraper is installed equidistantly around the outer circumference of the conveyor belt, a brush plate is fixedly installed on the other side of the scraper, and the bristles of the brush plate are in contact with the inner wall of the conveying trough, one side of the conveying trough is integrally provided with a discharge trough, and the number of the discharge troughs is four, and the four discharge troughs are equidistantly arranged, a sealing plate is slidably connected with the inlet of the discharge trough through a slide rail, a servo electric cylinder is installed on the other side of the conveying trough, and the end of the servo electric cylinder is connected with the sealing plate, an inlet is integrally provided near the lower edge of one side of the conveying trough, a vacuum cleaner is embedded and installed on one side of the support seat, a vacuum head is nested and fixedly installed on the outside of the discharge trough near the outlet, and the interior of the vacuum head is a cavity, and a plurality of filter holes communicating with the cavity are arranged on the side of the vacuum head facing the outlet of the discharge trough, and the vacuum cleaner is connected to the vacuum head pipe.

[0009] Among them, a material trough is installed through the middle of the cross frame, a discharge valve is installed at the outlet of the material trough, a connecting column is connected to the support seat through a servo motor, a connecting groove is installed on the outside of the connecting column through a support rod, a weighing bucket is elastically connected inside the connecting groove, an electric valve is installed at the outlet of the weighing bucket, a weighing sensor is installed on one side of the connecting groove, and a protrusion that contacts the weighing sensor is installed on the surface of the weighing bucket, the number of the connecting grooves and the weighing buckets are both three, and the three connecting grooves are equidistantly arranged around the outer periphery of the connecting column.

[0010] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0011] 1. In the utility model, through the feeding mechanism, the number of discharge troughs is four, and the four discharge troughs are equidistantly arranged, so that feeding work can be carried out on blast furnaces of four heights, and the use is more flexible. During the feeding process, the brush plate continuously sweeps across the inner wall of the conveying trough to avoid waste caused by material adhering to the inner wall of the conveying trough.

[0012] 2. In the utility model, during the feeding process, the vacuum cleaner works to remove the dust floating at the entrance of the blast furnace through the vacuum head. The filter holes on the surface of the vacuum head filter the materials to avoid sucking out large pieces of materials falling out of the discharge chute, which is more environmentally friendly.

[0013] 3. In the utility model, the discharge valve guides the material inside the trough into the weighing bucket, and the weighing sensor detects the weight of the entire weighing bucket. When the weight difference of the weighing bucket detected by the weighing sensor is consistent with the required material weight, the PLC controller controls the discharge valve to stop working, and the servo motor drives the connecting column to rotate 120°, so that another weighing bucket is directly below the trough outlet, and the outlet of the previous weighing bucket containing materials is directly opposite to the feed inlet. The electric valve feeds the material inside the weighing bucket from the feed inlet into the conveying trough. The three weighing buckets work alternately and continuously feed the required weight of materials into the conveying trough, so that the material conveying work is more continuous and the use effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of a partial three-dimensional structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the overall side section structure of the utility model;

[0016] Figure 3 For the utility model Figure 2 A schematic diagram of the enlarged structure at point A;

[0017] Figure 4 For the utility model Figure 2 A schematic diagram of the enlarged structure at B;

[0018] Figure 5 For the utility model Figure 3 The enlarged schematic diagram of the structure at C;

[0019] Figure 6 This is a schematic diagram showing the circuit structure of the utility model.

[0020] Markings in the figure: 1. Support seat; 101. Conveying trough; 1011. Conveyor belt; 1012. Scraper; 1013. Brush plate; 102. Discharge trough; 1021. Sealing plate; 1022. Servo electric cylinder; 103. Vacuum cleaner; 1031. Vacuum cleaner head; 104. Feed inlet; 105. Cross frame; 2. Material trough; 201. Discharge valve; 202. Servo motor; 2021. Connecting column; 203. Connecting trough; 2031. Weighing bucket; 2032. Weighing sensor; 2033. Electric valve. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] In the utility model:

[0023] Reference Figure 1-6 , an auxiliary feeding mechanism for a blast furnace, comprising a support base 1, a conveying trough 101 is fixedly installed on one side above the support base 1, and a horizontal frame 105 is fixedly installed on the other side above the support base 1;

[0024] The conveying trough 101 is provided with a feeding mechanism which can feed materials to blast furnaces at different heights.

[0025] Reference Figure 1 , 2 , 3, 5, in this embodiment, the loading mechanism includes a conveyor belt 1011, a scraper 1012, a brush plate 1013, a discharge trough 102, a sealing plate 1021 and a servo electric cylinder 1022, the conveyor belt 1011 is installed inside the conveyor trough 101, and the scraper 1012 is equidistantly installed around the outer periphery of the conveyor belt 1011, the brush plate 1013 is fixedly installed on the other side of the scraper 1012, and the bristles of the brush plate 1013 are in contact with the inner wall of the conveyor trough 101, one side of the conveyor trough 101 is integrally provided with a discharge trough 102, and the number of the discharge troughs 102 is four, and the four discharge troughs 102 are equidistantly arranged, and the sealing plate 1021 is slidably connected to the entrance of the discharge trough 102 through a slide rail, and a servo electric cylinder 1022 is installed on the other side of the conveyor trough 101, and the end of the servo electric cylinder 1022 is connected to the sealing plate 1021;

[0026] The device is pushed to one side of the blast furnace, and the discharge chute 102 that matches the height of the blast furnace entrance is aligned with the blast furnace entrance, the corresponding servo electric cylinder 1022 is extended to make the sealing plate 1021 withdraw from the entrance of the discharge chute 102, and the external material is sent into the conveying chute 101, the conveyor belt 1011 works, driving the scraper 1012 and the brush plate 1013 to move, and the material is transported to the corresponding discharge chute 102, and the material falls from the discharge chute 102 into the blast furnace, and the brush plate 1013 continuously sweeps from the inner wall of the conveying chute 101 to avoid the material adhering to the inner wall of the conveying chute 101 and causing waste.

[0027] Reference Figure 1-3 In this embodiment, a vacuum cleaner 103 is embedded and installed on one side of the support seat 1, and a vacuum head 1031 is nested and fixedly installed on the outside of the discharge trough 102 near the outlet, and the interior of the vacuum head 1031 is a cavity, and a plurality of filter holes communicating with the cavity are arranged on the side of the vacuum head 1031 facing the outlet of the discharge trough 102, and the vacuum cleaner 103 is connected to the vacuum head 1031 through a pipe;

[0028] During the loading process, the vacuum cleaner 103 works to remove the floating dust at the entrance of the blast furnace through the vacuum head 1031. The filter holes on the surface of the vacuum head 1031 filter the materials to avoid sucking out large pieces of materials falling out of the discharge chute 102.

[0029] Reference Figure 1 , 2 4. In this embodiment, a feeding port 104 is integrally provided near the lower edge of one side of the conveying trough 101, a trough 2 is installed through the middle of the cross frame 105, a discharge valve 201 is installed at the outlet of the trough 2, a connecting column 2021 is rotatably connected to the upper part of the support seat 1 through a servo motor 202, a connecting trough 203 is installed on the outside of the connecting column 2021 through a support rod, a weighing bucket 2031 is elastically connected inside the connecting trough 203, an electric valve 2033 is installed at the outlet of the weighing bucket 2031, a weighing sensor 2032 is installed on one side of the inner part of the connecting trough 203, and a convex block in contact with the weighing sensor 2032 is installed on the surface of the weighing bucket 2031;

[0030] The servo motor 202 drives the connecting column 2021 to rotate, so that a weighing bucket 2031 is directly opposite to the bottom of the outlet of the trough 2, and the discharge valve 201 works to introduce the material inside the trough 2 into the weighing bucket 2031. The weighing sensor 2032 detects the overall weight of the weighing bucket 2031. When the weight difference of the weighing bucket 2031 detected by the weighing sensor 2032 is consistent with the required material weight, the PLC controller controls the discharge valve 201 to stop working, and the servo motor 202 drives the connecting column 2021 to rotate 120°, so that another weighing bucket 2031 is directly opposite to the bottom of the outlet of the trough 2, and the outlet of the previous weighing bucket 2031 containing materials is directly opposite to the feed port 104, and the electric valve 2033 works to send the material inside the weighing bucket 2031 from the feed port 104 into the conveying trough 101.

[0031] Reference Figure 1 , 2 4. In this embodiment, there are three connecting grooves 203 and three weighing buckets 2031, and the three connecting grooves 203 are equidistantly arranged around the outer periphery of the connecting column 2021. The three weighing buckets 2031 work alternately to continuously feed materials of required weight into the conveying groove 101, so that the material conveying work is more continuous.

[0032] Reference Figure 1-6 In this embodiment, the conveyor belt 1011, the servo electric cylinder 1022, the vacuum cleaner 103, the discharge valve 201, the servo motor 202, the weighing sensor 2032 and the electric valve 2033 are all electrically connected to the external power supply through the control switch.

[0033] Working principle: first push the device to one side of the blast furnace, and align the discharge chute 102 that matches the height of the blast furnace entrance with the blast furnace entrance, the corresponding servo electric cylinder 1022 extends to make the sealing plate 1021 withdraw from the entrance of the discharge chute 102, then the servo motor 202 drives the connecting column 2021 to rotate, so that a weighing bucket 2031 is directly under the outlet of the chute 2, the discharge valve 201 works, and the material inside the chute 2 is introduced into the weighing bucket 2031, and the weighing sensor 2032 detects the overall weight of the weighing bucket 2031. When the weight difference of the weighing bucket 2031 detected by the weighing sensor 2032 is consistent with the required material weight, the PLC controller controls the discharge valve 201 to stop working, and the servo motor 202 drives the connecting column 2021 to rotate 120°, so that the other weighing bucket 2031 is directly opposite to the chute 2 outlet, and the outlet of the last weighing bucket 2031 filled with materials is just opposite to the feeding port 104, the electric valve 2033 works, and the materials in the weighing bucket 2031 are sent from the feeding port 104 to the inside of the conveying trough 101, and then the conveyor belt 1011 works, driving the scraper 1012 and the brush plate 1013 to move, and the materials are transported to the corresponding discharge trough 102, and the materials fall into the blast furnace from the discharge trough 102, and the brush plate 1013 continuously sweeps from the inner wall of the conveying trough 101 to avoid the waste caused by the adhesion of the materials to the inner wall of the conveying trough 101, and finally in the feeding process, the vacuum cleaner 103 works, and the dust floating at the entrance of the blast furnace is sucked away by the vacuum head 1031, and the three weighing buckets 2031 work alternately, and the materials of required weight are continuously sent to the inside of the conveying trough 101, so that the material transportation work is more continuous.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An auxiliary charging mechanism for a blast furnace, comprising a support seat (1), characterized in that: A conveying trough (101) is fixedly mounted on one side above the support seat (1), and a horizontal frame (105) is fixedly mounted on the other side above the support seat (1); The conveying trough (101) is provided with a feeding mechanism capable of feeding materials to blast furnaces at different heights; The feeding mechanism comprises a conveyor belt (1011), a scraper (1012), a brush plate (1013), a discharge trough (102), a sealing plate (1021) and a servo electric cylinder (1022); A conveyor belt (1011) is installed inside the conveying trough (101), and a scraper (1012) is installed around the outer periphery of the conveying belt (1011) at equal intervals. A brush plate (1013) is fixedly installed on the other side of the scraper (1012), and the bristles of the brush plate (1013) are in contact with the inner wall of the conveying trough (101). A discharge trough (102) is integrally arranged on one side of the conveying trough (101), and the number of the discharge troughs (102) is four, and the four discharge troughs (102) are arranged at equal intervals. A sealing plate (1021) is slidably connected to the entrance of the discharge trough (102) through a slide rail. A servo electric cylinder (1022) is installed on the other side of the conveying trough (101), and the end of the servo electric cylinder (1022) is connected to the sealing plate (1021).

2. The auxiliary feeding mechanism for a blast furnace according to claim 1, characterized in that: A material inlet (104) is integrally provided on one side of the conveying trough (101) near the lower edge.

3. The auxiliary feeding mechanism for a blast furnace according to claim 1, characterized in that: A vacuum cleaner (103) is embedded and installed on one side of the support seat (1); a vacuum head (1031) is embedded and fixedly installed on the outside of the discharge trough (102) near the outlet; the interior of the vacuum head (1031) is a cavity; a plurality of filter holes communicating with the cavity are arranged on the side of the vacuum head (1031) facing the outlet of the discharge trough (102); and the vacuum cleaner (103) is connected to the vacuum head (1031) by a pipe.

4. The auxiliary feeding mechanism for a blast furnace according to claim 1, characterized in that: A material trough (2) is installed through the middle of the cross frame (105), and a discharge valve (201) is installed at the outlet of the material trough (2).

5. The auxiliary feeding mechanism for a blast furnace according to claim 1, characterized in that: A connecting column (2021) is rotatably connected to the upper side of the support seat (1) via a servo motor (202); a connecting groove (203) is installed on the outside of the connecting column (2021) via a support rod; a weighing bucket (2031) is elastically connected to the inside of the connecting groove (203); an electric valve (2033) is installed at the outlet of the weighing bucket (2031); a weighing sensor (2032) is installed on one side of the inside of the connecting groove (203); and a protrusion that contacts the weighing sensor (2032) is installed on the surface of the weighing bucket (2031).

6. The auxiliary feeding mechanism for a blast furnace as claimed in claim 5, characterized in that: The number of the connecting grooves (203) and the weighing bucket (2031) is three, and the three connecting grooves (203) are equidistantly arranged around the outer periphery of the connecting column (221).

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