CN202865126U - Dual-layer kiln crown sealing device of lime shaft kiln - Google Patents

Abstract

The utility model discloses a dual-layer kiln crown sealing device of a lime shaft kiln, belongs to the technical field of kiln equipment and is used for solving the problem of raise dust in a charging process. The dual-layer kiln crown sealing device comprises a charging bell, a charging bucket, a feeding hopper, a slide chute, a charging bell drive device, a dedusting cover, a rope wheel system, a charging bell counterweight system and the like; the dedusting cover covers the slide chute; the slide chute is abutted with the feeding hopper; the feeding hopper is abutted with the charging bucket; the device is arranged at the kiln crown of the lime shaft kiln; a hopper gate is arranged on the feeding hopper; the charging bell is arranged inside the charging bucket; the dedusting cover is connected with a dust removal pipeline; and aggregated rock contained in the kiln and dust in the furnace can be subjected to dual-layer sealing. The dual-layer kiln crown sealing device plays a positive role in improvement of surrounding environment of the lime shaft kiln.

Description

Lime shaft kiln double-layer sealed kiln roof equipment

technical field

The utility model relates to furnace equipment, in particular to a kiln top charging device for a gas-fired lime vertical kiln, belonging to the technical field of furnace equipment. the

Background technique

Lime shaft kiln is the main type of kiln for the production of metallurgical lime. It has the advantages of less investment, short construction period, low operating cost and easy operation, so it is adopted by many iron and steel production enterprises. The lime shaft kiln is equipped with a charging device on the top of the kiln, which is mainly composed of a feeding chute (1), a feeding gate (2), and a hoisting system (3). Its structure is shown in Figure 1. The trolley full of stones is lifted, and the stones are poured into the discharge chute (1), and the winch system (3) opens the feed gate (2), and the stones are loaded into the kiln. Due to the high positive pressure in the gas-fired lime shaft kiln, this structure has a material feed gate (2). When the stone material enters the kiln, the dust in the kiln will escape, and the dust is very large. It is the lime shaft kiln that pollutes the surrounding area. A major source of pollution to the environment. the

Contents of the invention

The utility model provides a kiln top charging device for a lime shaft kiln which realizes dust control. the

A lime shaft kiln kiln roof charging equipment, its structure is shown in Figure 2: it is composed of material bell (4), material tank (5), lower hopper (6), chute (7), material bell driving device ( 8), dust removal cover (9), sheave system (10), material clock counterweight system (11) constitute. The dust removal cover (6) covers the chute (4), the chute (4) is docked with the lower hopper (3), and the lower hopper (3) is connected with the material tank (2). It is characterized in that the dust removal cover (9) is connected with a draft The dust removal pipe removes the dust from the discharge; the hopper gate (13) and the material bell (1) form a double-layer seal for the stone entering the kiln, thereby preventing the dust in the kiln from escaping. the

Description of drawings

Figure 1 is a schematic diagram of the structure of the original lime kiln roof charging device before the improvement;

Fig. 2 is a structural representation of the utility model;

Figure 3 is a schematic diagram of the structure of the hopper gate;

Fig. 4 is a structural schematic diagram of the clock driving device. the

The symbols in the figure are as follows: 1. Unloading chute; 2. Feed gate; 3. Hoisting system; 4. Material bell; 5. Material tank; 6. Unloading hopper; 7. Chute; 9. Dust removal cover; 10. Rope wheel system; 11. Material bell counterweight system; 12. Pressure equalizing pipe; 13. Kiln roof; 14. Hopper gate; 15. Gate hydraulic cylinder; 16. Gate limit switch; 17. Material bell hydraulic cylinder; 18. Material bell limit switch; 19. Reflector plate; 20. Material car proximity switch. the

Detailed ways

The specific embodiment of the present utility model is described further in conjunction with embodiment:

When the lime shaft kiln is charged, when the stone material is lifted by the material truck and passes the proximity switch (20), the hopper gate (14) is opened, the material bell (4) is in the closed position, and the material enters the material tank (5) through the chute (7) Inside. The material bell (4) is located in the material tank (5), and it is jointly driven by the material bell hydraulic cylinder (17) and the material bell counterweight system (11). The working stroke of the material bell hydraulic cylinder (17) is controlled by the material bell limit switch ( 18) Control and give signals. Because the charging clock (4) is in the closed position at this time, the dust in the kiln cannot escape through the feeding port. After the feed truck has unloaded a car of material, it returns to charge, and when passing through the proximity switch (20), the hopper gate (14) is closed. The opening and closing positions of the hopper gate (14) are all controlled by the gate limit switch (16) to ensure that the opening and closing are accurate. The material tank (5) is provided with a reflector (19), which can make the material distribution in the material tank more reasonable. When the material tank (5) receives several batches of stone materials and the stone materials in the tank reach the set value, the material bell (4) is opened, and the stone materials are loaded into the kiln through the reflection plate (19) to obtain a more uniform material layer distribution. The opening and closing position of material bell (4) is controlled by material bell limit switch (18). Hopper gate (14) is closed this moment. The dust in the kiln is sealed in the material tank and will not escape. In this way, the hopper gate (14) and the material bell (4) form a double-layer seal for the stone in the kiln, effectively protecting the environment. Lower hopper (6) is provided with hopper gate (14), and hopper gate is driven by gate hydraulic cylinder (15), is controlled by gate limit switch (16) and gives signal. When the material truck is unloading, there will be dust coming out, and at this time the hopper gate (14) is in the open position, the dust sealed in the material tank (5) will also escape, and the dust removal cover (9) installed here Connected with a ventilation and dust removal pipe, the dust can be sucked away. The dust removal cover (9) is connected with a pressure equalizing pipe (12) to be connected with the material tank (5), which can prevent the adverse effect on the equipment caused by the pressure rise in the material tank (5) when the material bell (4) is in an open state. In order to ensure that the material bell (4) can be closed firmly under any circumstances, a material bell counterweight system (11) is provided. The material bell (4) is connected with the material bell counterweight system (11) through the rope wheel system (10), and the material bell (4) works together through the hydraulic cylinder (17) and the counterweight system (11), and the furnace tank (5) The bottom is sealed. In the case of an accident, it can also ensure the safety of the equipment. the

Claims (6)

1. A lime shaft kiln double-layer sealed kiln roof equipment, consisting of a material bell (4), a material tank (5), a lower hopper (6), a chute (7), a material bell driving device (8), and a dust cover ( 9), rope wheel system (10), material bell counterweight system (11), characterized in that the double-layer sealed kiln roof equipment of the lime shaft kiln is located on the kiln roof, and consists of a hopper gate (14) and a material bell (4) Double-layer sealing, the dust removal cover (9) covers the chute (7), the chute (7) is docked with the lower hopper (6), the lower hopper (6) is connected with the material tank (5), and the dust removal cover (9) is connected There is a ventilation and dust removal pipe. 2. The double-layer sealed kiln roof equipment for lime shaft kiln according to claim 1, characterized in that: the dust removal cover (9) is connected with a pressure equalizing pipe (12) to connect with the material tank (5). 3. The double-layer sealed kiln roof equipment for lime shaft kiln according to claim 1, characterized in that: the lower hopper (6) is provided with a hopper gate (14), the hopper gate is driven by a gate hydraulic cylinder (15), and is driven by a gate hydraulic cylinder (15). Gate limit switch (16) controls and gives signal. 4. The lime shaft kiln double-layer sealed kiln roof equipment according to claim 1, characterized in that: the material bell (4) is located in the material tank (5), and it is composed of a material bell hydraulic cylinder (17) and a material bell The counterweight system (11) is jointly driven, and the working stroke of the material bell hydraulic cylinder (17) is controlled by the material bell limit switch (18) and a signal is given. 5. The double-layer sealed kiln roof equipment for lime shaft kiln according to claim 1, characterized in that: the material tank (5) is provided with a reflection plate (19). 6. The double-layer sealed kiln roof equipment for lime shaft kiln according to claim 1, characterized in that: the material bell counterweight system is connected to the material bell (4) via the rope pulley system (10). the

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