Lime kiln oxygen-enriched combustion oxygen concentration adjusting device

Abstract

The utility model belongs to the technical field of oxygen-enriched combustion, and particularly relates to a lime kiln oxygen-enriched combustion oxygen concentration adjusting device which comprises a gas mixing bin, an oxygen generator and an air blower. An oxygen conveying pipe and an air conveying pipe are arranged on the upper side and the lower side respectively, air inlet buckets are fixedly connected to the ends, close to the gas mixing bin, of the oxygen conveying pipe and the air conveying pipe, a plurality of arc-shaped blades are fixedly connected to the inner surfaces of the air inlet buckets, and the diffusion area of oxygen and air entering the gas mixing bin is increased; the oxygen concentration of the mixed air after stirring and mixing is more uniform, so that the oxygen concentration measurement is more accurate, and the oxygen concentration adjustment failure of the device is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to oxygen -enriched combustion technical field, concretely is a lime kiln oxygen -enriched combustion oxygen concentration adjusting device. BACKGROUND

[0002] The firing of cement clinker in the cement production process relies on coal combustion to provide heat. In high-altitude areas, due to the lack of oxygen in the air, local hypoxia occurs during the combustion process, the flame temperature is low, the coal cannot be fully burned, a large amount of combustible material becomes smoke and is discharged, energy is wasted, atmospheric dust pollution is caused, and at the same time, due to the slow combustion speed, favorable conditions are provided for the generation of harmful gases. The oxygen-enriched combustion technology can effectively improve the combustion effect by increasing the oxygen content in the main combustion part of the cement kiln.

[0003] CN222047785U is a cement kiln oxygen-enriched combustion oxygen concentration adjusting device. Through the cooperation of the fixed box, the through hole, the fixed seat, the lifting piece, the driving piece, the mounting plate and the movable seat, the movable seat moves towards the fixed seat, thereby extruding the oxygen delivery hose, and the flow of oxygen output can be adjusted. When mixing oxygen and air, the air is extracted by the air guide piece and mixed directly with the oxygen in the oxygen delivery hose. The mixture may not be uniform, resulting in inaccurate oxygen concentration measurement, which may cause the oxygen concentration adjustment of the device to fail. In addition, no adjustment mechanism is provided for the high pressure of the mixed gas during the mixing process, which may cause damage to the equipment. To improve the uniformity of the device and provide an adjustment mechanism for the high pressure of the mixed gas, we propose a lime kiln oxygen-enriched combustion oxygen concentration adjusting device. SUMMARY

[0004] In view of the deficiencies of the prior art, the utility model provides a lime kiln oxygen-enriched combustion oxygen concentration adjusting device. A stirring and mixing assembly is installed inside the gas mixing bin, which makes the oxygen concentration of the mixed air more uniform and the oxygen concentration measurement more accurate. A pressure alarm assembly is installed at the top of the gas mixing bin. When the pressure of the mixed gas is too high, the alarm and pressure relief can avoid damaging the equipment. A filter assembly is provided inside the filter box to filter and collect dust in the air, solving the problem.

[0005] In order to achieve the above object, the utility model discloses a lime kiln oxygen-enriched combustion oxygen concentration adjusting device, including gas mixing bin, oxygen generator and air blower, the left side of gas mixing bin is fixedly connected with oxygen delivery tube and air delivery tube respectively on the upside and downside, the input end of oxygen delivery tube is fixedly connected in the output end of oxygen generator, the input end of air delivery tube is fixedly connected with filter box, the output end of air blower is fixedly connected in the top of filter box through the pipeline, the right side of gas mixing bin is fixedly connected with the outlet tube, the oxygen delivery tube, air delivery tube and outlet tube all are provided with solenoid valve and flowmeter, and the outlet tube is also provided with oxygen concentration sensor, the inside installation of gas mixing bin has stirring mixing subassembly, the top of gas mixing bin is installed with pressure alarm component, the inside of filter box is provided with filter component, pressure alarm component includes alarm, the alarm is fixedly installed at the top of the front side of gas mixing bin, the top right side of gas mixing bin is also provided with safety valve and pressure gauge.

[0006] Preferably, the stirring mixing assembly comprises a driving motor, the driving motor is fixedly installed at the top of the gas mixing bin, a rotating rod is rotatably arranged in the gas mixing bin, a plurality of mixing blades are fixedly connected to the outer surface of the rotating rod, an installation housing is fixedly connected to the top of the gas mixing bin, the top end of the rotating rod penetrates through the installation housing and is fixedly connected with a worm gear, a worm is rotatably arranged in the front side of the installation housing, the left end of the worm is fixedly connected to the output shaft end of the driving motor, the worm is engaged with the worm gear, a fixing sleeve is further fixedly sleeved to the top side of the rotating rod, a bearing is installed at the inside bottom side of the installation housing, and the bearing is further sleeved on the fixing sleeve.

[0007] Preferably, the filter component comprises a collecting box, a filter chamber and an installation chamber are respectively arranged at the front side and the back side of the filter box, the collecting box is arranged in the installation chamber, filter plate two and filter plate one are respectively arranged at the upside and the downside of the inside of the filter chamber, a first ash falling port and a second ash falling port are respectively formed at the upside and the downside of the left part of the collecting box.

[0008] Preferably, the oxygen delivery tube and the air delivery tube are fixedly connected with air inlet hoppers at the ends close to the gas mixing bin, a plurality of arc-shaped blades are fixedly connected to the inner surface of the air inlet hoppers.

[0009] Preferably, handles are hingedly connected to the top left side and the top right side of the inner wall of the collecting box.

[0010] Preferably, a controller is arranged at the front side of the gas mixing bin.

[0011] The utility model provides a kind of lime kiln oxygen-enriched combustion oxygen concentration adjusting device.Compared with prior art, it has the following beneficial effects:

[0012] 1. The gas mixing bin is internally provided with a stirring and mixing assembly, which utilizes the characteristic that the oxygen density is greater than that of air, and the oxygen delivery pipe and the air delivery pipe are arranged on the upper and lower sides respectively, and the oxygen delivery pipe and the air delivery pipe are fixedly connected with an air inlet hopper at the end close to the gas mixing bin, and the inner surface of the air inlet hopper is fixedly connected with a plurality of arc-shaped blades, so that the diffusion area of the oxygen and air entering the gas mixing bin is increased, the oxygen concentration of the mixed air after stirring and mixing is more uniform, the oxygen concentration determination is more accurate, and the oxygen concentration adjustment failure of the device is avoided.

[0013] 2. A pressure alarm assembly is installed at the top of the gas mixing bin, the internal gas pressure of the gas mixing bin is determined by a pressure gauge, when the gas pressure exceeds a certain threshold value, the worker is reminded by an alarm to release pressure, if no one adjusts, in order to ensure the safety of the equipment, the mixed air is discharged through a safety valve.

[0014] 3. A filter assembly is arranged in the filter box, the filter assembly is provided with filter plate two and filter plate one, double filtration of air is realized, and collection is carried out through a collection box, when the dust collection is full, the collection box is taken out to pour dust through the handle. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a left view structure schematic diagram of the main body of the utility model;

[0016] Figure 2 It is a front view structure schematic diagram of the main body of the utility model;

[0017] Figure 3 It is a rear view sectional structure schematic diagram of the main body of the utility model;

[0018] Figure 4 It is a filter box sectional structure schematic diagram of the utility model;

[0019] Figure 5 It is a filter box sectional structure schematic diagram of the utility model; Figure 3 It is an enlarged schematic diagram of the structure at A in the utility model.

[0020] In the drawing: 1, gas mixing bin; 2, oxygen delivery pipe; 3, air delivery pipe; 4, oxygen generator; 5, air blower; 6, filter box; 7, electromagnetic valve; 8, flowmeter; 9, safety valve; 10, pressure gauge; 11, alarm; 12, controller; 13, air outlet pipe; 14, oxygen concentration sensor; 15, rotating rod; 16, mixing blade; 17, filter chamber; 18, filter plate one; 19, filter plate two; 20, mounting chamber; 21, collection box; 22, first dust falling port; 23, second dust falling port; 24, handle; 25, mounting shell; 26, worm; 27, worm wheel; 28, driving motor; 29, fixed sleeve; 30, bearing; 31, air inlet hopper; 32, arc-shaped blade. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0022] Please refer to Figures 1-5 The present application provides a technical solution: an oxygen concentration adjusting device for oxygen-enriched combustion of a lime kiln, comprising a gas mixing bin 1, an oxygen generator 4 and a blower 5. The left part of the gas mixing bin 1 is fixedly connected with an oxygen delivery pipe 2 and an air delivery pipe 3 on the upper and lower sides respectively. The input end of the oxygen delivery pipe 2 is fixedly connected with the output end of the oxygen generator 4. The input end of the air delivery pipe 3 is fixedly connected with a filter box 6. The output end of the blower 5 is fixedly connected with the top of the filter box 6 through a pipeline. The right side of the gas mixing bin 1 is fixedly connected with an air outlet pipe 13. Electromagnetic valves 7 and flow meters 8 are arranged on the oxygen delivery pipe 2, the air delivery pipe 3 and the air outlet pipe 13. An oxygen concentration sensor 14 is further arranged on the air outlet pipe 13. A stirring and mixing assembly is installed in the gas mixing bin 1. A pressure alarm assembly is installed on the top of the gas mixing bin 1. A filtering assembly is arranged in the filter box 6.

[0023] The oxygen concentration adjusting device for oxygen-enriched combustion of a lime kiln adjusts the oxygen concentration in the air entering the inside of the lime kiln, improves the combustion efficiency inside the lime kiln, manufactures oxygen by the oxygen generator 4, delivers the oxygen to the inside of the gas mixing bin 1 through the oxygen delivery pipe 2, sucks in air by the blower 5, filters the air by the filtering assembly in the filter box 6, then delivers the air to the inside of the gas mixing bin 1 through the air delivery pipe 3, then mixes the oxygen and the air by the stirring and mixing assembly in the gas mixing bin 1, delivers the mixed air to the inside of the lime kiln through the air outlet pipe 13, measures the oxygen concentration by the oxygen concentration sensor 14 during the delivery of the mixed air, measures and adjusts the input flow of the oxygen and the air and the output flow of the mixed air by arranging the electromagnetic valves 7 and the flow meters 8 on the oxygen delivery pipe 2, the air delivery pipe 3 and the air outlet pipe 13, adjusts the oxygen concentration of the mixed air, alarms by the pressure alarm assembly when the gas pressure in the gas mixing bin 1 is too high, and completes pressure relief to ensure safe operation of the equipment.

[0024] The pressure alarm assembly comprises an alarm 11 fixedly installed on the top front side of the gas mixing bin 1. A safety valve 9 and a pressure gauge 10 are further arranged on the top right side of the gas mixing bin 1.

[0025] The internal gas pressure of the gas mixing bin 1 is measured by the pressure gauge 10, when the internal gas pressure of the gas mixing bin 1 is too high and reaches the first threshold value, the alarm 11 is used to alarm to remind the staff to relieve pressure, when the internal gas pressure of the gas mixing bin 1 is too high and reaches the second threshold value, the mixed air is directly discharged through the safety valve 9.

[0026] The stirring mixing assembly comprises a driving motor 28 fixedly installed at the top of the gas mixing bin 1, a rotating rod 15 rotatably arranged in the gas mixing bin 1, a plurality of mixing blades 16 fixedly connected to the outer surface of the rotating rod 15, an installation housing 25 fixedly connected to the top of the gas mixing bin 1, a worm wheel 27 penetrating through the installation housing 25 and fixedly connected to the top end of the rotating rod 15, a worm 26 rotatably arranged at the front side of the installation housing 25, the left end of the worm 26 being fixedly connected to the output shaft end of the driving motor 28, the worm 26 being engaged with the worm wheel 27, and a fixing sleeve 29 fixedly sleeved to the top side of the rotating rod 15, and a bearing 30 installed at the inner bottom side of the installation housing 25 and sleeved on the fixing sleeve 29.

[0027] The driving motor 28 drives the worm 26 to rotate, the worm 26 is engaged with the worm wheel 27 to drive the rotating rod 15 fixedly connected to the worm wheel 27 to rotate, and the oxygen and air are stirred and mixed by the plurality of mixing blades 16 during the rotation of the rotating rod 15.

[0028] The filtering assembly comprises a collecting box 21, the filter box 6 is provided with a filter chamber 17 and an installation chamber 20 at the front and rear sides thereof respectively, the collecting box 21 is arranged in the installation chamber 20, the filter chamber 17 is provided with a second filter plate 19 and a first filter plate 18 at the upper and lower sides thereof respectively, and the left part of the collecting box 21 is provided with a first ash falling port 22 and a second ash falling port 23 at the upper and lower sides thereof respectively.

[0029] The air sucked by the air blower 5 enters the filter chamber 17 in the filter box 6 through the pipeline, passes through the second filter plate 19 and the first filter plate 18 with different filter hole sizes, and then enters the air conveying pipe 3 after double multi-stage filtration, and the dust filtered by the second filter plate 19 and the first filter plate 18 enters the collecting box 21 through the first ash falling port 22 and the second ash falling port 23 respectively.

[0030] The oxygen conveying pipe 2 and the air conveying pipe 3 are both fixedly connected with an air inlet 31 at one end close to the gas mixing bin 1, and a plurality of arc-shaped blades 32 are fixedly connected to the inner surface of the air inlet 31, so that the diffusion area of the oxygen and air entering the gas mixing bin 1 is increased through the air inlet 31 and the plurality of arc-shaped blades 32 fixedly connected to the inner surface of the air inlet 31.

[0031] The left and right sides of the inner wall top of the collecting box 21 are both hingedly connected with a handle 24, so that the collecting box 21 can be taken out to pour ash.

[0032] The front side of the gas mixing bin 1 is provided with a controller 12 for controlling and adjusting the operation of each component of the device.

[0033] Working principle: the lime kiln oxygen-enriched combustion oxygen concentration adjusting device adjusts the oxygen concentration in the air entering the inside of the lime kiln, improves the combustion efficiency inside the lime kiln, manufactures oxygen through the oxygen generator 4, and delivers the oxygen to the inside of the gas mixing bin 1 through the oxygen delivery pipe 2, absorbs air through the air blower 5, and the absorbed air enters the filter chamber 17 in the filter box 6 through the pipeline, passes through the filter plate two 19 and the filter plate one 18 with different filter hole sizes, and enters the air delivery pipe 3 after double multi-stage filtration, the dust filtered by the filter plate two 19 and the filter plate one 18 respectively enters the collection box 21 through the first dust falling port 22 and the second dust falling port 23 for collection, and the air delivery pipe 3 delivers the air to the inside of the gas mixing bin 1;

[0034] The driving motor 28 rotates the worm wheel 27, thereby rotating the worm wheel 27 engaged with the worm wheel 27, and further rotating the rotating rod 15 fixedly connected with the worm wheel 27, the rotating rod 15 rotates in the process of stirring and mixing the oxygen and the air through the mixing blades 16, the mixed air is delivered to the inside of the lime kiln through the air outlet pipe 13, the oxygen concentration is measured through the oxygen concentration sensor 14 in the process of delivering the mixed air, the input flow of the oxygen and the air and the output flow of the mixed air are measured and adjusted through the electromagnetic valve 7 and the flow meter 8 arranged on the oxygen delivery pipe 2, the air delivery pipe 3 and the air outlet pipe 13, the oxygen concentration of the mixed air is adjusted, the internal gas pressure of the gas mixing bin 1 is measured through the pressure gauge 10 in the air mixing process, when the internal gas pressure of the gas mixing bin 1 is too high and reaches the first threshold value, the alarm 11 is used for alarm to remind the staff to perform pressure relief treatment, when the internal gas pressure of the gas mixing bin 1 is too high and reaches the second threshold value, the safety valve 9 is used for directly discharging the mixed air to complete pressure relief, and the safe operation of the device is ensured.

Claims

1. A lime kiln oxygen-enriched combustion oxygen concentration adjusting device, comprising a gas mixing bin (1), an oxygen generator (4) and a blower (5), characterized in that: The left upper and lower sides of the gas mixing bin (1) are fixedly communicated with an oxygen delivery pipe (2) and an air delivery pipe (3), respectively, the input end of the oxygen delivery pipe (2) is fixedly communicated with the output end of an oxygen generator (4), the input end of the air delivery pipe (3) is fixedly communicated with a filter box (6), the output end of a blower (5) is fixedly communicated with the top of the filter box (6) through a pipeline, the right side of the gas mixing bin (1) is fixedly communicated with an air outlet pipe (13), electromagnetic valves (7) and flow meters (8) are arranged on the oxygen delivery pipe (2), the air delivery pipe (3) and the air outlet pipe (13), and an oxygen concentration sensor (14) is further arranged on the air outlet pipe (13), a stirring and mixing assembly is mounted in the gas mixing bin (1), a pressure alarm assembly is mounted on the top of the gas mixing bin (1), and a filter assembly is arranged in the filter box (6). The pressure alarm assembly comprises an alarm (11), which is fixedly mounted on the top front side of the gas mixing bin (1), and a safety valve (9) and a pressure gauge (10) are further arranged on the top right side of the gas mixing bin (1).

2. The oxygen concentration adjusting device for oxygen-enriched combustion of a lime kiln according to claim 1, characterized in that: The stirring and mixing assembly comprises a driving motor (28), which is fixedly mounted on the top of the gas mixing bin (1), a rotating rod (15) is rotatably arranged in the gas mixing bin (1), a plurality of mixing blades (16) are fixedly connected to the outer surface of the rotating rod (15), an installation housing (25) is fixedly connected to the top of the gas mixing bin (1), the top end of the rotating rod (15) penetrates through the installation housing (25) and is fixedly connected with a worm wheel (27), a worm (26) is rotatably arranged on the front side of the installation housing (25), the left end of the worm (26) is fixedly connected to the output shaft end of the driving motor (28), the worm (26) is engaged with the worm wheel (27), a fixing sleeve (29) is further fixedly sleeved on the top side of the rotating rod (15), a bearing (30) is mounted on the inner bottom side of the installation housing (25), and the bearing (30) is further sleeved on the fixing sleeve (29).

3. The oxygen concentration adjusting device for oxygen-rich combustion of a lime kiln according to claim 1, characterized in that: The filter assembly comprises a collection box (21), a filter chamber (17) and a mounting chamber (20) are arranged on the inner front and rear sides of the filter box (6), respectively, the collection box (21) is arranged in the mounting chamber (20), filter plates two (19) and filter plates one (18) are arranged on the inner upper and lower sides of the filter chamber (17), respectively, and a first dust falling port (22) and a second dust falling port (23) are formed on the left upper and lower sides of the collection box (21).

4. The oxygen concentration adjusting device for oxygen-rich combustion of a lime kiln according to claim 1, characterized in that: The ends of the oxygen delivery pipe (2) and the air delivery pipe (3) close to the gas mixing bin (1) are fixedly connected with air inlet hoppers (31), and the inner surfaces of the air inlet hoppers (31) are fixedly connected with a plurality of arc-shaped blades (32).

5. The oxygen concentration adjusting device for oxygen-rich combustion of a lime kiln according to claim 3, characterized in that: The inner wall top left and right sides of the collection box (21) are hingedly connected with handles (24).

6. The oxygen concentration adjusting device for oxygen-rich combustion of a lime kiln according to claim 1, characterized in that: The front side of the gas mixing bin (1) is provided with a controller (12).

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