On-line automatic blockage clearing device for sintering pallet grid section

Abstract

The utility model relates to a sintering pallet grate bar on-line automatic unblocking device which comprises a cleaning mechanism which is arranged below a sintering pallet and comprises a supporting frame, two oppositely-arranged connecting rods, a grate cleaning roller arranged at one ends of the two connecting rods and a balancing weight arranged at the other ends of the two connecting rods. The middles of the two connecting rods are rotationally arranged on the supporting frame, and the balancing weights are used for driving the connecting rods to incline, so that the grate cleaning roller abuts against grate bars of the sintering pallet; the connecting rod driving mechanism is arranged on one side of the sintering trolley and comprises a motor driving assembly, a guide wheel assembly and a rope arranged on the guide wheel assembly; the motor driving assembly is connected with the upper end of the balancing weight through the rope, and then the balancing weight ascends or descends by pulling or releasing the rope. The automatic unblocking device is provided to automatically clean materials blocked and bonded on the grate bars of the trolley in the sintering process, so that good air permeability of the trolley is kept.

Description

Technical Field

[0001] The utility model relates to the technical field of sintering machine equipment in the metallurgical industry, and particularly relates to an on-line automatic clogging removal device for grate bars of a sintering trolley. Background Technique

[0002] The sintering trolley is an important production equipment in the sintering system. In the sintering process, iron-containing materials, solid fuels, and solvents are mixed in a certain proportion, then wetted with water and granulated, and then spread evenly on the sintering trolley through a distributor. A 40-mm-thick sintered ore with a particle size of 10-18 mm is laid in advance between the grate bars of the sintering trolley and the mixed material as the bedding material. The mixed material is ignited by an igniter to ignite the solid fuel, and the main exhaust fan sucks air from bottom to top. The mixed material burns gradually from the upper surface layer to the bottom layer of the trolley, and after the material layer burns, it cools and consolidates to form sintered ore.

[0003] The grate bar is the main component of the sintering trolley for carrying sintered ore, which is directly related to the air volume and segregation of the sintered ore layer. In actual production, due to the cyclic enrichment of small-particle sintered ore, sticky dust, and alkali metals such as potassium, sodium, and zinc, they adhere to the surface of the grate bar, which easily causes the air permeability resistance of the grate bar to gradually increase and the air volume passing through to decrease. Eventually, the gaps between the grate bars are blocked, hindering the air volume and being unfavorable for improving the production and quality of sintering and stable operation.

[0004] In view of the above problems, there is an urgent need for an on-line automatic clogging removal device that can automatically remove the blocked materials and surface adhesives in the grate bars without increasing the labor intensity of workers, keep the grate bars clean, and not affect the sintering air permeability. Content of the Utility Model

[0005] The technical problem to be solved by the utility model is to provide an on-line automatic clogging removal device for grate bars of a sintering trolley, so as to automatically clean the blocked and adhered materials on the trolley grate bars during the sintering process, thereby maintaining good air permeability of the trolley.

[0006] To solve the above problems, the technical solution adopted by the utility model is:

[0007] An on-line automatic clogging removal device for grate bars of a sintering trolley, which comprises:

[0008] A cleaning mechanism is arranged below the sintering trolley, and it comprises a support frame, two oppositely arranged connecting rods, a cleaning roller arranged at one end of the two connecting rods, and a counterweight block arranged at the other end of the two connecting rods. The middle parts of the two connecting rods are rotatably arranged on the support frame, and the counterweight block is used to drive the connecting rods to tilt, so as to make the cleaning roller abut against the grate bars of the sintering trolley;

[0009] The connecting rod drive mechanism is arranged on one side of the sintering trolley and includes a motor drive assembly, a guide wheel assembly, and a rope arranged on the guide wheel assembly; the motor drive assembly is connected to the upper end of the counterweight through the rope, and then the counterweight is lifted or lowered by pulling or releasing the rope.

[0010] As a preferred embodiment, the support frame includes two relatively arranged support columns and a connecting rod rotating shaft arranged between the upper ends of the two support columns, and the middle part of the connecting rod is sleeved on the connecting rod rotating shaft.

[0011] As a preferred embodiment, the cleaning grate roller is rotatably arranged between the two connecting rods, and a plurality of roller nail assemblies are arranged at intervals in the axial direction of the cleaning grate roller. The roller nail assembly includes a plurality of roller nails evenly arranged circumferentially on the cleaning grate roller, and the roller nails frictionally collide with the grate bars to make the grate bars move elastically up and down, thereby shaking off the accumulated materials blocked in the gaps of the grate bars.

[0012] As a preferred embodiment, the roller nails of two adjacent roller nail assemblies are arranged staggeredly.

[0013] As a preferred embodiment, the motor drive assembly includes a motor bracket, a motor reducer arranged on the motor bracket, a swing arm bracket arranged adjacent to the motor bracket, and a swing arm rotatably arranged in the middle on the swing arm bracket;

[0014] One end of the swing arm is provided with a swing arm connecting rod, and the end of the swing arm connecting rod is hinged to the end of the crank at the output end of the motor reducer; the other end of the swing arm is connected to the rope;

[0015] The swing arm is inclined. The motor reducer drives one end of the swing arm to descend, so that the other end of the swing arm ascends, and then the rope is pulled; the motor reducer drives one end of the swing arm to ascend, and the other end of the swing arm descends, and then the rope is released.

[0016] As a preferred embodiment, the guide wheel assembly includes a first guide wheel arranged adjacent to the swing arm bracket, a second guide wheel arranged adjacent to the support frame, and a third guide wheel arranged between the two connecting rods and above the counterweight;

[0017] The first guide wheel and the second guide wheel are used for guiding and tensioning the rope;

[0018] The rope bypasses the upper part of the third guide wheel and is connected to the upper end of the counterweight, so that when the rope is pulled, the counterweight is driven to rise.

[0019] As a preferred embodiment, the rope is made of steel wire rope.

[0020] As a preferred embodiment, a rubber sleeve is provided on the end of the roller nail.

[0021] The beneficial effects of adopting the above technical solutions are as follows:

[0022] The on-line automatic clogging clearing device of the present application includes a cleaning mechanism arranged below the sintering trolley and a connecting rod driving mechanism arranged on one side of the sintering trolley. The cleaning mechanism includes two connecting rods rotatably arranged on the support frame. One end of the two connecting rods is provided with a cleaning grate roller, and the other end is provided with a counterweight. Under the action of the counterweight, one end of the cleaning grate roller is tilted and abuts against the grate bar. The counterweight is lifted by the connecting rod driving mechanism or lowered due to the self-weight of the counterweight. The periodic movement enables the cleaning grate roller to repeatedly abut and collide with the grate bar, thereby causing the grate bar to vibrate, cleaning the accumulated materials clogged in the gaps of the grate bar, and at the same time destroying the oxide layer on the surface of the grate bar to prevent sticking of materials, realizing automatic and efficient clogging clearing of the grate bar, effectively increasing the sintering air volume, and being beneficial to increasing the sintering output, improving the quality and reducing the consumption. Description of the Drawings

[0023] Figure 1 It is a front view schematic diagram of the embodiment and the sintering trolley.

[0024] Figure 2 It is a side view schematic diagram of the cleaning mechanism and part of the guide wheel assembly of the embodiment.

[0025] Figure 3 It is a front view schematic diagram of the connecting rod driving mechanism and part of the guide wheel assembly of the embodiment.

[0026] Figure 4 It is a front view schematic diagram of the cleaning mechanism and part of the guide wheel assembly of the embodiment.

[0027] Wherein: 1 motor reducer; 2 swing arm; 3 swing arm rotating shaft; 4 first guide wheel; 5 rope; 6 second guide wheel; 7 third guide wheel; 8 counterweight; 9 sintering trolley; 10 connecting rod rotating shaft; 11 cleaning grate roller; 11-1 roller nail; 12 connecting rod; 13 grate bar; 14 support column. Detailed Embodiments

[0028] To make the purpose, technical solutions and advantages of the present utility model clearer, the present utility model will be clearly and completely described below in conjunction with specific embodiments.

[0029] As Figures 1 to 4 shown, an on-line automatic clogging clearing device for the grate bars of a sintering trolley includes:

[0030] A cleaning mechanism, see Figure 1 , Figure 2 and Figure 4, which is arranged below the sintering trolley 9 and includes a support frame, two oppositely arranged connecting rods 12, a grate cleaning roller 11 arranged at one end of the two connecting rods 12, and a counterweight 8 arranged at the other end of the two connecting rods 12. The middle parts of the two connecting rods 12 are rotatably arranged on the support frame. The counterweight 8 is used to drive the connecting rods 12 to incline, so that the grate cleaning roller 11 abuts against the grate bars 13 of the sintering trolley 9.

[0031] The connecting rod driving mechanism, see Figures 1 to 3 , which is arranged on one side of the sintering trolley 9 and includes a motor driving assembly, a guide wheel assembly, and a rope 5 arranged on the guide wheel assembly. The motor driving assembly is connected to the upper end of the counterweight 8 through the rope 5, and then the counterweight 8 is lifted or lowered by pulling or releasing the rope 5. In this embodiment, the rope 5 is made of steel wire rope

[0032] See Figure 2 and Figure 4 , the support frame includes two oppositely arranged support columns 14 and a connecting rod rotating shaft 10 arranged between the upper ends of the two support columns 14. The middle parts of the connecting rods 12 are sleeved on the connecting rod rotating shaft 10.

[0033] See Figure 2 and Figure 4 , the grate cleaning roller 11 is rotatably arranged between the two connecting rods 12. A plurality of roller nail assemblies are arranged at intervals in the axial direction of the grate cleaning roller 11. The roller nail assembly includes a plurality of roller nails 11-1 evenly arranged circumferentially on the grate cleaning roller 11. The roller nails 11-1 frictionally collide with the grate bars 13 to make the grate bars 13 move elastically up and down, so as to shake off the accumulated materials blocked in the gaps of the grate bars 13. Preferably, the roller nails 11-1 of adjacent two roller nail assemblies are arranged staggeredly, which is used to increase the randomness of the grate bar shaking and improve the shaking-off effect. At the same time, in cooperation with the rotatably arranged grate cleaning roller 11, the falling materials accumulated on the grate cleaning roller 11 can be rolled off to avoid the accumulation of falling materials on the grate cleaning roller 11. In this embodiment, the ends of the roller nails 11-1 are coated with rubber sleeves to protect the grate bars 13 and reduce wear.

[0034] See Figure 1 and Figure 3, the motor drive assembly includes a motor bracket, a motor speed reducer 1 disposed on the motor bracket, a swing arm bracket disposed adjacent to the motor bracket, and a swing arm 2 rotatably disposed in the middle on the swing arm bracket; one end of the swing arm 2 is provided with a swing arm connecting rod, and the end of the swing arm connecting rod is hinged to the end of the crank at the output end of the motor speed reducer 1; the other end of the swing arm 2 is connected to the rope 5; the swing arm 2 is inclined, and the motor speed reducer 1 drives one end of the swing arm 2 to descend, so that the other end of the swing arm 2 ascends, thereby pulling the rope 5; the motor speed reducer 1 drives one end of the swing arm 2 to ascend, and the other end of the swing arm 2 descends, thereby releasing the rope 5. In this embodiment, the design of the swing arm 2 can tension the rope 5 during the process of pulling and releasing the rope 5, and at the same time can amplify the output amplitude of the motor speed reducer 1 to increase the lifting stroke of the counterweight 8 and improve the clogging removal effect.

[0035] See Figures 2 to 4 , the guide wheel assembly includes a first guide wheel 4 disposed adjacent to the swing arm bracket, a second guide wheel 6 disposed adjacent to the support frame, and a third guide wheel 7 disposed between the two connecting rods 12 and above the counterweight 8; the first guide wheel 4 and the second guide wheel 6 are used for guiding and tensioning the rope 5; the rope 5 bypasses the upper part of the third guide wheel 7 and is connected to the upper end of the counterweight 8, so that when the rope 5 is pulled, the counterweight 8 is driven to ascend. In this embodiment, the guide wheels are all rotatably disposed at the upper ends of the guide wheel support columns on both sides, and the guide wheel support columns are fixed on the ground.

[0036] In this embodiment, the periodic output power of the motor speed reducer 1 is used to drive the periodic lifting of the counterweight 8, so that the cleaning grate roller 11 periodically contacts and collides with the grate bars 13 to achieve the shaking and clogging removal of the grate bars 13. When the sintering machine is overhauled or the clogging removal device is stopped, the motor speed reducer 1 is powered off, the swing arm 2 is removed, and the counterweight 8 is removed, so that the cleaning grate roller 11 and the grate bars 13 of the sintering trolley 9 are separated from contact.

[0037] Preferably, in order to increase the clogging removal effect and reduce the burden on the drive mechanism, this embodiment is arranged along one-half of the side of the sintering trolley, and 2-4 clogging removal devices can be arranged at the same time to achieve the expected effect.

[0038] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An online automatic blocking removal device for sintering trolley grates, characterized in that: It includes: A cleaning mechanism is arranged below the sintering trolley (9), comprising a support frame, two connecting rods (12) arranged opposite to each other, a grate cleaning roller (11) arranged at one end of the two connecting rods (12), and a counterweight (8) arranged at the other end of the two connecting rods (12), wherein the middle parts of the two connecting rods (12) are rotatably arranged on the support frame, and the counterweight (8) is used to drive the connecting rods (12) to tilt, thereby causing the grate cleaning roller (11) to abut against the grate bars (13) of the sintering trolley (9); A connecting rod driving mechanism is arranged on one side of the sintering trolley (9), and comprises a motor driving assembly, a guide wheel assembly and a rope (5) arranged on the guide wheel assembly; the motor driving assembly is connected to the upper end of the counterweight block (8) through the rope (5), and the counterweight block (8) is raised or lowered by pulling or releasing the rope (5).

2. The on-line automatic blocking clearing device for sintering trolley grates according to claim 1 is characterized in that: The support frame comprises two supporting columns (14) arranged opposite to each other and a connecting rod rotating shaft (10) arranged between the upper ends of the two supporting columns (14), and the middle part of the connecting rod (12) is sleeved on the connecting rod rotating shaft (10).

3. The on-line automatic blocking clearing device for sintering trolley grates according to claim 1 is characterized in that: The grate cleaning roller (11) is rotatably arranged between the two connecting rods (12); a plurality of roller nail assemblies are arranged at intervals in the axial direction of the grate cleaning roller (11); the roller nail assemblies include a plurality of roller nails (11-1) uniformly arranged in an annular direction on the grate cleaning roller (11); the roller nails (11-1) rub against the grate bars (13) to make the grate bars (13) move elastically up and down, thereby shaking off the accumulated material blocked in the gaps of the grate bars (13).

4. The on-line automatic blocking clearing device for sintering trolley grates according to claim 3 is characterized in that: The roller pins (11-1) of two adjacent roller pin assemblies are arranged in a staggered manner.

5. The on-line automatic blocking clearing device for sintering trolley grates according to claim 1 is characterized in that: The motor drive assembly comprises a motor bracket, a motor reducer (1) arranged on the motor bracket, a swing arm bracket arranged adjacent to the motor bracket, and a swing arm (2) rotatably arranged in the middle on the swing arm bracket; A swing arm connecting rod is provided at one end of the swing arm (2), and the end of the swing arm connecting rod is hingedly connected to the end of the crank at the output end of the motor reducer (1); the other end of the swing arm (2) is connected to the rope (5); The swing arm (2) is in an inclined shape, and the motor reducer (1) drives one end of the swing arm (2) to descend, causing the other end of the swing arm (2) to ascend, thereby pulling the rope (5); the motor reducer (1) drives one end of the swing arm (2) to ascend, causing the other end of the swing arm (2) to descend, thereby releasing the rope (5).

6. The on-line automatic blocking clearing device for sintering trolley grates according to claim 5 is characterized in that: The guide wheel assembly comprises a first guide wheel (4) arranged adjacent to the swing arm bracket, a second guide wheel (6) arranged adjacent to the support frame, and a third guide wheel (7) arranged between the two connecting rods (12) and located above the counterweight block (8); The first guide wheel (4) and the second guide wheel (6) are used to guide and tension the rope (5); The rope (5) passes over the top of the third guide wheel (7) and is connected to the upper end of the counterweight (8), so that when the rope (5) is pulled, the counterweight (8) is driven to rise.

7. The on-line automatic blocking clearing device for sintering trolley grates according to claim 1 is characterized in that: The rope (5) is a steel wire rope.

8. The on-line automatic blocking clearing device for sintering trolley grates according to claim 3 is characterized in that: The end of the roller nail (11-1) is covered with a rubber sleeve.

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