Stock bin smoke follow-up cover sealing device and working method

Abstract

The invention relates to the technical field of ferrous metallurgy, and particularly discloses a stock bin smoke follow-up cover sealing device and a working method.The stock bin smoke follow-up cover sealing device comprises a belt conveyor, a material distribution trolley, a supporting frame and a cover sealing belt, the belt conveyor is installed on a steel structure platform, a guide rail is installed on the steel structure platform, and a plurality of auxiliary raw material bins are arranged on the two sides of the guide rail; a material distribution trolley is movably arranged on the guide rail, the belt conveyor conveys materials into the material distribution trolley, and the material distribution trolley conveys the materials to the auxiliary raw material bin; supporting frames are installed on the two sides of the material distribution trolley, and a sealing cover belt is installed on the supporting frames and blocks a stock bin opening of the auxiliary raw material stock bin. The invention solves the problem of difficulty in dynamic plugging of smoke overflow of multiple bins in the auxiliary raw material distribution process of the converter in a steel plant. The device is simple in structure, zero in energy consumption driving, capable of reducing overflow of more than 80% of dust and remarkably reducing the environmental protection treatment cost of a steel mill, and suitable for multi-bin scenes such as converter auxiliary raw material bins and blast furnace ore tanks.

Description

Technical Field

[0001] The invention relates to the technical field of iron and steel metallurgy, and in particular to a silo smoke follower type sealing device and a working method. Background Art

[0002] In the converter production of steel mills, auxiliary raw materials such as limestone, dolomite, and fluorite are transported by auxiliary raw material conveyors, and then the auxiliary raw materials are sequentially placed in multiple silos set along the belt conveyor through the auxiliary raw material distribution trolley chute running above the belt conveyor. During the placement process, the auxiliary raw material powder will overflow from the silo. To address this problem, the conventional technology currently adopted is to add a dust removal and ash suction pipe to the distribution trolley, with the pipe mouth close to the chute mouth and located above the silo for dust collection. However, this technology has certain defects. First, the coverage hysteresis. The distribution trolley needs to be moved frequently to different silos, and the dust suction pipe is difficult to cover the silo mouth that has been fed in time; second, the adsorption efficiency is low, the silos are widely distributed horizontally, the smoke and dust diffuse quickly, and the dust suction pipe cannot completely capture the spilled dust; third, the maintenance cost is high, and the dust collection system relies on a high-power fan, which has high energy consumption and is easy to clog.

[0003] The above problems lead to serious dust pollution during the feeding of auxiliary raw materials, and the environmental protection pressure of steel plants has increased dramatically. Therefore, there is an urgent need for a low-cost device that can dynamically follow the movement of the material distribution trolley and achieve instant smoke and dust blocking, so as to solve the problem of environmental pollution caused by the difficulty of dynamic blocking of smoke and dust overflow from multiple silos during the feeding of auxiliary raw materials in the converter of existing steel plants and steelmaking plants. Summary of the invention

[0004] In view of the problems existing in the prior art, the purpose of the present invention is to provide a silo smoke and dust follow-up covering device and working method, which realizes dynamic covering through a mechanical follow-up structure, solves the problem of smoke and dust overflow in a multi-silo feeding scenario, protects the environment, and the device has the advantages of simple use and low cost.

[0005] The technical solution adopted by the present invention to solve the technical problem is: a silo smoke follower type capping device, comprising a belt conveyor, a material distribution trolley, a support frame and a capping belt, wherein the belt conveyor is installed on a steel structure platform, a guide rail is installed on the steel structure platform, a plurality of auxiliary raw material silos are arranged on both sides of the guide rail, a material distribution trolley is movably arranged on the guide rail, the belt conveyor transports materials into the material distribution trolley, and the material distribution trolley transports the materials to the auxiliary raw material silo;

[0006] Support frames are installed on both sides of the material distribution trolley, and covering belts are installed on the supporting frames. The covering belts are sealed on the silo opening of the auxiliary raw material silo.

[0007] Specifically, the material distribution trolley moves horizontally along the guide rail, and the material distribution trolley is equipped with a material discharge chute and a dust suction pipe, the dust suction pipe is located on the side of the material discharge chute, and the material distribution trolley transports materials into the auxiliary raw material silo through the material discharge chute.

[0008] Specifically, the support frame is symmetrically welded to both sides of the material distribution trolley, and a plurality of roller systems are integrated on the support frame.

[0009] Specifically, the roller system includes supporting rollers, redirecting rollers and deflection rollers. The supporting rollers include supporting roller 1 and supporting roller 2. Support roller 1 and support roller 2 are respectively installed on both sides of the top of the supporting frame. Support roller 1 and support roller 2 support the main part of the covering belt on the supporting frame.

[0010] Specifically, the redirecting roller includes redirecting roller one and redirecting roller two, which are respectively installed on both sides of the lower part of the support frame, and redirecting roller one and redirecting roller two guide the lifting and falling path of the covering belt.

[0011] Specifically, the deflection-blocking rollers have a total of eight groups in the upper and lower layers, symmetrically clamping both sides of the covering belt, and the deflection-blocking rollers suppress the deviation angle of the covering belt by 15°-30°. The deflection-blocking rollers include deflection-blocking roller one, deflection-blocking roller two, deflection-blocking roller three, deflection-blocking roller four, deflection-blocking roller five, deflection-blocking roller six, deflection-blocking roller seven, and deflection-blocking roller eight. Deflection-blocking roller one, deflection-blocking roller two, deflection-blocking roller three, and deflection-blocking roller four are installed on the same horizontal plane on the upper part of the supporting frame, and deflection-blocking roller one and deflection-blocking roller two are respectively installed on the left sides of the supporting frame, and deflection-blocking roller one and deflection-blocking roller two are respectively installed on the left sides of the supporting frame. Located on both sides of the covering belt; deflection prevention roller three and deflection prevention roller four are installed on the right side of the supporting frame, and deflection prevention roller three and deflection prevention roller four are respectively located on both sides of the covering belt; deflection prevention roller five, deflection prevention roller six, deflection prevention roller seven and deflection prevention roller eight are installed on the same horizontal plane at the bottom of the supporting frame, and deflection prevention roller five and deflection prevention roller six are respectively installed on the left side of the supporting frame, and deflection prevention roller five and deflection prevention roller six are respectively located on both sides of the covering belt; deflection prevention roller seven and deflection prevention roller eight are respectively installed on the right side of the supporting frame, and deflection prevention roller seven and deflection prevention roller eight are respectively located on both sides of the covering belt.

[0012] Specifically, the covering belt is made of high temperature resistant rubber composite material, the width of the covering belt is 1.1-1.3 times the width of the silo opening, the length of the covering belt is flat to cover all auxiliary raw material silos, and both ends of the covering belt are fixed to the steel structure platform of the belt conveyor through pressure plates.

[0013] Specifically, the covering belt rises with the roller system of the material distribution trolley and is installed on the supporting frame of the material distribution trolley. The covering belt falls with the roller system of the material distribution trolley and is then laid flat on the silo opening. When the material distribution trolley is running, the supporting frame slides and lifts the partial covering belt without affecting the material discharge from the material pipe in the middle of the supporting frame. The covering belts on both sides of the supporting frame naturally fall back and are laid flat on the silo opening to block the smoke and dust at the silo opening.

[0014] A working method of a silo smoke follower type capping device comprises the following steps:

[0015] 1) Feeding stage:

[0016] (1) The material distribution trolley moves to the top of the target silo opening, the support frame lifts the capping belt to a height of H ≥ 300 mm through the support rollers, and the dust suction pipe starts;

[0017] (2) The material discharge chute feeds the material to the silo port, the cover belt in the lifting area avoids the material discharge chute, and the cover belts on both sides keep covering the working silo;

[0018] 2) Capping stage:

[0019] After the feeding is completed, the material distribution trolley moves to the next auxiliary raw material silo, and the redirection roller guides the covering belt to fall back naturally to complete the covering of the current silo opening;

[0020] 3) Loop execution:

[0021] Repeat the above steps 1)-2), the covering belt moves with the fabric trolley to form a "dynamic lifting-adaptive covering" cycle, and realize continuous blocking of smoke and dust.

[0022] The present invention has the following beneficial effects:

[0023] The silo smoke and dust follow-up covering device and working method designed by the present invention realize: first, precise dynamic sealing, which realizes instant covering of the smoke and dust generation source through a mechanical follow-up structure, and reduces the dust overflow by more than 80%; second, zero energy consumption design, which utilizes belt gravity and roller guidance to realize adaptive action without the need for an additional power source; third, it has strong adaptability and can be directly integrated into the existing material distribution trolley with low modification cost; fourth, it has strong reliability, and the deviation prevention system ensures that the belt has a small offset and a long service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the horizontal structure of the silo smoke and dust follower type sealing device.

[0025] Figure 2 It is a schematic diagram of the cross-sectional structure of the silo smoke and dust follower type sealing device.

[0026] In the figure: 1-belt conveyor, 2-material distribution trolley, 3-capping belt, 4-support frame, 5a-support roller one, 5b-support roller two, 6a-redirection roller one, 6b-redirection roller two, 7a-bias blocking roller one, 7c-bias blocking roller three, 7d-bias blocking roller four, 8a-bias blocking roller five, 8c-bias blocking roller seven, 8d-bias blocking roller eight, 9-feeding chute, 10-auxiliary raw material silo, 11-dust suction pipe. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely further describe the technical solutions in the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0028] like Figure 1-Figure 2 As shown, a silo smoke and dust follow-up type capping device includes a belt conveyor 1, a material distribution trolley 2, a capping belt 3, a supporting frame 4, a material discharge chute 9, an auxiliary raw material silo 10, a dust suction pipe 11, supporting rollers, redirecting rollers and deflection-blocking rollers. The belt conveyor 1 is installed on a steel structure platform, and a guide rail is installed on the steel structure platform. A plurality of auxiliary raw material silos 10 are arranged on both sides of the guide rail. A material distribution trolley 2 is movably arranged on the guide rail. The belt conveyor 1 transports materials into the material distribution trolley 2, and the material distribution trolley 2 transports the materials to the auxiliary raw material silo 10.

[0029] The material distribution trolley 2 moves horizontally along the guide rail, and the material distribution trolley 2 is equipped with a material discharge chute 9 and a dust suction pipe 11, and the dust suction pipe 11 is located on the side of the material discharge chute 9. The material distribution trolley 2 transports materials to the auxiliary material bin 10 through the material discharge chute 9. The dust suction pipe 11 absorbs the smoke generated by unloading.

[0030] Support frames 4 are installed on both sides of the material distribution trolley 2, and capping belts 3 are installed on the support frames 4, and the capping belts 3 are blocked on the silo opening of the auxiliary raw material silo 10. The support frames 4 are symmetrically welded on both sides of the material distribution trolley 2, and multiple roller systems are integrated on the support frames 4.

[0031] The roller system includes supporting rollers, redirecting rollers and deflection rollers.

[0032] The supporting rollers include supporting roller 1 5a and supporting roller 2 5b, which are respectively installed on both sides of the top of the supporting frame 4. The supporting rollers 1 5a and supporting roller 2 5b support the main part of the covering belt 3 on the supporting frame 4.

[0033] The redirecting rollers include redirecting roller 1 6a and redirecting roller 2 6b, which are respectively installed on both sides of the lower part of the support frame 4. The redirecting roller 1 6a and redirecting roller 2 6b are pressed on the upper part of the covering belt 3 to guide the lifting and falling path of the covering belt 3, thereby realizing the redirection of the covering belt 3 and preventing the covering belt 3 from being lifted and detached.

[0034] There are eight groups of deflection-blocking rollers in the upper and lower layers, which symmetrically clamp the two sides of the covering belt 3. The deflection-blocking rollers suppress the deviation angle of the covering belt 3 by 15°-30°. The deflection-blocking rollers include deflection-blocking roller 1 7a, deflection-blocking roller 2, deflection-blocking roller 3 7c, deflection-blocking roller 4 7d, deflection-blocking roller 5 8a, deflection-blocking roller 6, deflection-blocking roller 7c, and deflection-blocking roller 8d. Deflection-blocking roller 1 7a, deflection-blocking roller 2 7b, deflection-blocking roller 3 7c, and deflection-blocking roller 4 7d are installed on the same horizontal plane of the upper part of the supporting frame 4 and are located below the supporting rollers. Deflection-blocking roller 1 7a and deflection-blocking roller 2 are respectively installed on the left side of the supporting frame 4, and deflection-blocking roller 1 7a and deflection-blocking roller 2 are respectively located on both sides of the covering belt 3; deflection-blocking roller 3 7c and deflection-blocking roller 4 7d are installed on the right side of the supporting frame 4, and deflection-blocking roller 3 7c and deflection-blocking roller 4 7d are respectively located on both sides of the covering belt 3.

[0035] The deflection-blocking roller five 8a, the deflection-blocking roller six, the deflection-blocking roller seven 8c, and the deflection-blocking roller eight 8d are installed on the same horizontal plane at the bottom of the support frame 4 and are located above the redirecting roller. The deflection-blocking roller five 8a and the deflection-blocking roller six are respectively installed on the left side of the support frame 4, and the deflection-blocking roller five 8a and the deflection-blocking roller six are respectively located on both sides of the covering belt 3; the deflection-blocking roller seven 8c and the deflection-blocking roller eight 8d are respectively installed on the right side of the support frame 4, and the deflection-blocking roller seven 8c and the deflection-blocking roller eight 8d are respectively located on both sides of the covering belt 3.

[0036] The covering belt 3 is made of high temperature resistant rubber composite material. The width of the covering belt 3 is 1.1-1.3 times the width of the silo opening. The length of the covering belt 3 is flat to cover all the auxiliary raw material silos 10. Both ends of the covering belt 3 are fixed to the steel structure platform of the belt conveyor 1 through pressing plates.

[0037] A working method of a silo smoke follower type capping device comprises the following steps:

[0038] 1. Feeding stage:

[0039] (1) The material distribution trolley 2 moves to the top of the target silo opening, the support frame 4 lifts the capping belt 3 to a height H ≥ 300 mm through the support rollers, and the dust suction pipe 11 is started.

[0040] (2) The material discharge chute 9 feeds material to the silo port, and the lifting area cover belt 3 avoids the material discharge chute 9, and the cover belts 3 on both sides keep covering the working silo.

[0041] 2. Capping stage:

[0042] After the feeding is completed, the material distribution trolley 2 moves to the next auxiliary raw material silo 10, and the redirection roller guides the covering belt 3 to fall back naturally to complete covering the current silo opening.

[0043] 3. Loop execution:

[0044] Repeat the above steps 1) to 2), the covering belt 3 moves with the material distribution trolley 2 to form a "dynamic lifting-adaptive covering" cycle, so as to achieve continuous smoke and dust blocking.

[0045] The present invention is not limited to the above-mentioned implementation modes, and anyone should be aware of the structural changes made under the enlightenment of the present invention, and all those having the same or similar technical solutions as the present invention fall within the protection scope of the present invention.

[0046] The techniques, shapes, and structural parts not described in detail in the present invention are all well-known techniques.

Claims

1. A silo dust follower capping device, characterized in that: It includes a belt conveyor, a material distribution trolley, a support frame and a capping belt. The belt conveyor is installed on a steel structure platform. A guide rail is installed on the steel structure platform. Multiple auxiliary raw material bins are arranged on both sides of the guide rail. A material distribution trolley is movably arranged on the guide rail. The belt conveyor transports materials into the material distribution trolley, and the material distribution trolley transports the materials to the auxiliary raw material bin. Support frames are installed on both sides of the material distribution trolley, and covering belts are installed on the supporting frames. The covering belts are sealed on the silo opening of the auxiliary raw material silo.

2. The silo dust follower type capping device according to claim 1, characterized in that: The material distribution trolley moves horizontally along the guide rail, and is equipped with a material discharge chute and a dust suction pipe. The dust suction pipe is located on the side of the material discharge chute. The material distribution trolley transports materials into the auxiliary raw material bin through the material discharge chute.

3. The silo dust follower type capping device according to claim 2, characterized in that: The support frame is symmetrically welded to both sides of the material distributing trolley, and a plurality of roller systems are integrated on the support frame.

4. The silo dust follower type capping device according to claim 3, characterized in that: The roller system comprises supporting rollers, redirecting rollers and deflection-blocking rollers.

5. The silo dust follower type capping device according to claim 4, characterized in that: The supporting rollers include supporting roller 1 and supporting roller 2, which are respectively installed on both sides of the top of the supporting frame, and supporting roller 1 and supporting roller 2 support the main part of the covering belt on the supporting frame.

6. The silo dust follower type capping device according to claim 4, characterized in that: The redirecting rollers include redirecting roller 1 and redirecting roller 2, which are respectively installed on both sides of the lower part of the support frame, and the redirecting rollers 1 and 2 guide the lifting and falling paths of the covering belt.

7. The silo dust follower type capping device according to claim 4, characterized in that: The deflection-blocking rollers are eight groups in total in the upper and lower layers, symmetrically clamping both sides of the capping belt, and suppressing the deviation angle of the capping belt by 15°-30°. The deflection-blocking rollers include deflection-blocking roller 1, deflection-blocking roller 2, deflection-blocking roller 3, deflection-blocking roller 4, deflection-blocking roller 5, deflection-blocking roller 6, deflection-blocking roller 7, and deflection-blocking roller 8. Deflection-blocking roller 1, deflection-blocking roller 2, deflection-blocking roller 3, and deflection-blocking roller 4 are installed on the same horizontal plane on the upper part of the supporting frame, deflection-blocking roller 1 and deflection-blocking roller 2 are respectively installed on the left side of the supporting frame, and deflection-blocking roller 1 and deflection-blocking roller 2 are respectively located at the capping belt. On both sides of the cover belt; the deflection prevention roller three and the deflection prevention roller four are installed on the right side of the supporting frame, and the deflection prevention roller three and the deflection prevention roller four are respectively located on both sides of the cover belt; the deflection prevention roller five, the deflection prevention roller six, the deflection prevention roller seven and the deflection prevention roller eight are installed on the same horizontal plane at the bottom of the supporting frame, and the deflection prevention roller five and the deflection prevention roller six are respectively installed on the left side of the supporting frame, and the deflection prevention roller five and the deflection prevention roller six are respectively located on both sides of the cover belt; the deflection prevention roller seven and the deflection prevention roller eight are respectively installed on the right side of the supporting frame, and the deflection prevention roller seven and the deflection prevention roller eight are respectively located on both sides of the cover belt.

8. The silo dust follower type capping device according to claim 1, characterized in that: The covering belt is made of high temperature resistant rubber composite material, the width of the covering belt is 1.1-1.3 times the width of the silo opening, the length of the covering belt is flat to cover all auxiliary raw material silos, and both ends of the covering belt are fixed to the steel structure platform of the belt conveyor through pressing plates.

9. The silo dust follower type capping device according to claim 8, characterized in that: The covering belt is installed on the supporting frame of the material distribution trolley as the roller system of the material distribution trolley rises, and the covering belt is laid flat on the silo opening after the roller system of the material distribution trolley falls. When the material distribution trolley is running, the supporting frame slides and lifts the partial covering belt, which does not affect the material discharge of the material pipe in the middle of the supporting frame. The covering belts on both sides of the supporting frame naturally fall back and are laid flat on the silo opening to block the smoke and dust at the silo opening.

10. The working method of the silo dust follower type capping device according to any one of claims 1 to 9, characterized in that: The following steps are involved: 1) Feeding stage: (1) The material distribution trolley moves to the top of the target silo opening, the support frame lifts the capping belt to a height of H ≥ 300 mm through the support rollers, and the dust suction pipe starts; (2) The material discharge chute feeds the material to the silo port, the cover belt in the lifting area avoids the material discharge chute, and the cover belts on both sides keep covering the working silo; 2) Capping stage: After the feeding is completed, the material distribution trolley moves to the next auxiliary raw material silo, and the redirection roller guides the covering belt to fall back naturally to complete the covering of the current silo opening; 3) Loop execution: Repeat the above steps 1)-2), the covering belt moves with the fabric trolley to form a "dynamic lifting-adaptive covering" cycle to achieve continuous smoke and dust blocking.

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