Total oxygen glass kiln

Abstract

The utility model discloses an all-oxygen glass kiln which comprises a base, the base is fixedly connected with the ground, a kiln body is fixed on the base, a smoke outlet is formed in the top of the kiln body, a melting tank is arranged in the kiln body, a feeding port is formed in one side of the melting tank, the smoke outlet is connected with an incoming material preheating mechanism through a pipeline, and the incoming material preheating mechanism is connected with a heating device through a pipeline. The incoming material preheating mechanism comprises a discharging hopper and a heat exchange coil pipe, the heat exchange coil pipe is wound on the outer wall of the periphery of the discharging hopper, the heat exchange coil pipe is provided with a smoke inlet and a smoke outlet, the smoke inlet is connected with the smoke outlet through a pipeline, and the smoke outlet is connected with a smoke dust removal mechanism through a pipeline. According to the utility model, the blanking hopper and the heat exchange coil pipe are arranged, so that the glass batch can be preheated by utilizing flue gas preheating, the heat waste is reduced, and the cost is saved; the detachable filler frame is arranged in the flue, so that dust in flue gas can be removed, the flue gas emission quality is improved, and the environment is protected.

Description

Technical Field

[0001] The utility model relates to the technical field of glass furnaces, in particular to an all-oxygen glass furnace. Background Art

[0002] The oxygen used in the combustion-supporting agent of traditional glass kilns comes from the air, which has a high nitrogen content. A large amount of nitrogen is heated and discharged into the air at a temperature of several hundred degrees Celsius, causing a large amount of heat loss, which accounts for 25%-35% of the total energy consumption. Secondly, the large amount of NO and NO2 formed by combustion will cause air pollution. Furthermore, nitrogen accounts for about 75% of the flue gas flowing through the heat storage chamber, flue and other equipment. A large amount of flue gas not only carries a lot of dust, which is not good for the environment, but also aggravates the erosion of equipment and reduces the service life of the equipment.

[0003] The oxy-fuel glass furnace uses pure oxygen as a combustion aid, which has a significant effect on energy saving, environmental protection, and improving the melting rate of the furnace. It is called the second revolution in glass melting technology. Since the oxy-fuel furnace eliminates the heat storage chamber, the flue gas temperature reaches above 1000℃. Most of it is directly discharged or uses waste heat to generate electricity, but the utilization rate is low. The glass batch needs to be preheated before adding it to the melting pool, generally preheated to 500℃. Therefore, the oxy-fuel glass furnace is used to preheat the glass batch, which not only can reasonably utilize the heat of the flue gas but also saves the energy consumption required for preheating the glass batch. Although the flue gas generated by the oxy-fuel glass furnace has a great reduction in nitrogen oxides, it still contains a lot of dust. In order to achieve environmentally friendly emissions, the dust in the flue gas needs to be removed. Utility Model Content

[0004] In order to overcome the above-mentioned deficiencies in the prior art, the utility model provides an all-oxygen glass kiln.

[0005] The technical solution adopted by the present utility model is: an all-oxygen glass kiln, comprising a base, which is fixedly connected to the ground, the kiln body is fixed on the base, a smoke exhaust port is provided on the top of the kiln body, a melting pool is provided in the kiln body, a feed port is provided on one side of the melting pool, the smoke exhaust port is connected to an incoming material preheating mechanism through a pipeline, the incoming material preheating mechanism comprises a lower hopper and a heat exchange coil, the lower hopper is provided with a feed port, a heat exchange coil is wound around the outer wall of the lower hopper, the heat exchange coil is provided with a smoke inlet and a smoke outlet, the smoke inlet is connected to the smoke exhaust port through a pipeline, and the smoke outlet is connected to a flue gas dust removal mechanism through a pipeline.

[0006] Furthermore, the smoke inlet of the heat exchange coil is arranged at its bottom, and the first discharge port and the second discharge port are arranged at the bottom of the lower hopper, the first discharge port is connected to the first auger conveyor, the feed port of the first auger conveyor is connected to the feed port of the kiln body, the second discharge port is connected to the second auger conveyor, the second auger conveyor is arranged obliquely, and the feed port of the second auger conveyor is connected to the feeding port of the lower hopper, a temperature sensor is arranged in the lower hopper above the first discharge port and the second discharge port, the first discharge port is provided with a first electric valve, and the second discharge port is provided with a second electric valve.

[0007] Furthermore, a stirring motor is fixed on the top of the feed hopper, an output end of the stirring motor is connected to a stirring shaft, and a stirring blade is provided on the stirring shaft.

[0008] Furthermore, the flue gas dust removal mechanism includes a flue connected to the smoke outlet of the heat exchange coil, and an inverted "V"-shaped filling frame mounting frame arranged in the flue, a filling frame slidably arranged in the filling frame mounting frame, the filling frame mounting frame is provided with a slide groove, dust removal filler is installed in the filling frame, a slide bar is provided on the filling frame, mounting openings are provided for the filling frames on the outer walls on both sides of the flue, the filling frames are clamped in the filling frame mounting frame through a limiting assembly, a flue baffle is fixed to the rear end of the filling frame, a filling frame sliding frame is connected to the mounting opening opened on the outer wall of the flue, the filling frame can slide in the filling frame sliding frame, and the filling frame can slide into the filling frame mounting frame from the filling frame sliding frame, a push plate is provided in the filling frame sliding frame, and the rear side wall of the push plate is fixedly connected to a hydraulic cylinder.

[0009] Furthermore, the limit assembly includes a limit groove arranged at the bottom of the filling frame, and a limit block arranged in the slide groove of the filling frame mounting frame, the limit block is set as an inclined surface in the direction of entry into the filling frame, the limit block can be slidably arranged in the sleeve, a spring is provided in the sleeve, the upper end of the spring abuts against the limit block, the bottom of the limit block is fixedly connected to a screw, the screw passes downward through the sleeve, the spring and the bottom of the flue, the part of the screw passing through the flue is connected to the fixing frame through a thread, and the bottom end of the screw is connected to a rotating handle.

[0010] The utility model provides a lower hopper and a heat exchange coil, and the flue gas of the all-oxygen glass kiln is introduced into the heat exchange coil, and the glass batch material is added into the lower hopper. The glass batch material can be preheated by flue gas preheating, which reduces heat waste and saves costs. A detachable stuffing frame is provided in the flue, and a dust removal stuffing is installed in the stuffing frame, so that dust in the flue gas can be removed, thereby improving the quality of flue gas emission and protecting the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the structure of the utility model.

[0012] Figure 2 The utility model discloses filler frame structure schematic diagram.

[0013] Figure 3 It is cross section schematic diagram when the utility model discloses filler frame and filler frame mounting frame cooperation.

[0014] Figure 4 It is filler frame sliding frame and hydraulic cylinder structure schematic diagram for the utility model.

[0015] Figure 5 It is limiting component structure schematic diagram for the utility model.

[0016] In the drawing: 1. base, 2. kiln body, 3. hopper, 4. heat exchange coil, 5. first auger feeder, 6. second auger feeder, 7. stirring motor, 8. flue, 9. filler frame mounting frame, 901. sliding groove, 10. filler frame, 1001. slide, 1002. flue baffle, 11. dust removal filler, 12. limiting component, 1201. limiting groove, 1202. limiting block, 1203. sleeve, 1204. spring, 1205. screw rod, 1206. fixed frame, 1207. rotating handle. 13. filler frame sliding frame, 14. push plate, 15. hydraulic cylinder. DETAILED DESCRIPTION

[0017] In order to make the technical scheme of the utility model more clearly understood, the utility model is further explained below in combination with the drawings.

[0018] As Figure 1-Figure 5 Indicated, a kind of oxy glass kiln, including base 1, base 1 is fixedly connected with ground, kiln body 2 is fixed on base 1, flue is set on the top of kiln body 2, melting pool is set in kiln body 2, melting pool side is provided with feed inlet, flue is connected with incoming material preheating mechanism by pipeline, incoming material preheating mechanism includes hopper 3 and heat exchange coil 4, hopper 3 is provided with feeding port, heat exchange coil 4 is wound and set on the outer wall around hopper 3, heat exchange coil 4 is provided with smoke inlet and smoke outlet, smoke inlet is connected with flue by pipeline, smoke outlet is connected with flue gas dust removal mechanism by pipeline, the base 1 of oxy glass kiln in the present application, kiln body 2, melting pool, feed inlet and flue are all conventional structures of prior art, so its detailed connection, structure is not described again, in the oxy glass kiln flue gas of this embodiment passes through the flue of kiln body 2 and enters heat exchange coil 4, heat exchange coil 4 is wound on the outer periphery of hopper 3 and preheats glass batch in hopper 3.

[0019] Preferably, in the embodiment, the smoke inlet of the heat exchange coil 4 is arranged at the bottom thereof, the bottom of the hopper 3 is provided with a first discharge outlet and a second discharge outlet, the first discharge outlet is connected with the first auger feeder 5, the feeding opening of the first auger feeder 5 is connected with the feeding opening of the kiln body 2, the second discharge outlet is connected with the second auger feeder, the second auger feeder is arranged obliquely, the feeding opening of the second auger feeder is connected with the feeding opening of the hopper 3, a temperature sensor is arranged in the hopper 3 above the first discharge outlet and the second discharge outlet, the first discharge outlet is provided with a first electric valve, the second discharge outlet is provided with a second electric valve, the temperature sensor is used for detecting the temperature of the glass batch in the hopper 3, a controller can be arranged and connected with the temperature controller, the controller is also connected with the first electric valve, the second electric valve, the first auger feeder 5 and the second auger feeder, when the temperature sensor monitors that the temperature does not reach the preheating temperature requirement of the glass batch, the first electric valve is closed, the first auger feeder 5 does not work, the second electric valve is opened, and the third auger feeder works to convey the glass batch not meeting the requirement into the hopper 3 for reheating, when the temperature monitoring reaches the requirement of the glass batch, the controller controls the second electric valve to be closed, the first electric valve to be opened, the second auger feeder to stop working, and the first auger feeder 5 to start, so as to convey the glass batch in the hopper into the kiln body 2.

[0020] Preferably, in the embodiment, the top of the hopper is fixed with a stirring motor 7, the output end of the stirring motor 7 is connected with a stirring shaft, the stirring shaft is provided with stirring blades, in working, the stirring motor 7 is started to drive the stirring shaft to rotate, the stirring shaft drives the stirring blades to rotate, and the stirring blades stir the batch in the hopper 3, so that the glass batch is heated more uniformly.

[0021] Specifically, the flue dust removal mechanism comprises a flue 8 communicated with the flue outlet of the heat exchange coil 4, and a reverse "V"-shaped filler frame mounting rack 9 arranged in the flue 8, which is arranged in a reverse "V" shape to increase the contact area between the filler and the flue gas. A filler frame 10 is slidably arranged in the filler frame mounting rack 9. The filler frame mounting rack 9 is provided with a sliding groove 901. The filler frame 10 is provided with a sliding strip 1001 matched with the sliding groove 901. The filler frame 10 is clamped in the filler frame mounting rack 9 through a limiting assembly 12. The filler frame 10 is provided with a flue baffle 1002 at the rear end. The flue 8 is provided with a mounting hole at the outer wall. The filler frame 10 is slidably arranged in the filler frame sliding rack 13. The filler frame 10 can be slid into the filler frame mounting rack 9 by the filler frame sliding rack 13. A push plate 14 is arranged in the filler frame sliding rack 13. The push plate 14 is fixedly connected with a hydraulic cylinder 15 at the rear wall. When the filler frame 10 is installed, the filler frame 10 is placed on the filler frame sliding rack 13. The flue baffle 1002 of the filler frame 10 abuts against the push plate 14. The hydraulic cylinder 15 is started. The piston rod of the hydraulic cylinder 15 pushes the push plate 14 to move upward along the filler frame sliding rack 13. The filler frame 10 also moves upward along the filler frame sliding rack 13 under the action of the push plate 14. The filler frame 10 enters the flue 8 through the mounting hole. The length of the filler frame 10 is greater than the thickness of the flue wall. When the sliding strip 1001 of the filler frame 10 moves to the filler frame mounting rack 9 and matches with the sliding groove 901 of the filler frame mounting rack 9, the tail of the filler frame 10 is still matched with the filler frame sliding rack 13. The hydraulic cylinder 15 continues to push until the filler frame 10 is completely fixed by the limiting assembly 12. The flue baffle 1002 arranged on the filler frame 10 blocks the mounting hole. The hydraulic cylinder 15 returns. When it is necessary to remove the filler frame 10 for replacement, the limiting of the limiting assembly 12 is released. The filler frame 10 slides to the mounting hole under the action of gravity. The hydraulic cylinder 15 is started in advance to move the push plate 14 to the position below the mounting hole. When the filler frame 10 is released, it slides downward. The push plate 14 abuts against the flue baffle 1002. Then the hydraulic cylinder 15 slowly returns. After the hydraulic cylinder 15 returns, the worker replaces the filler frame 10.

[0022] Preferably, the limiting assembly 12 comprises a limiting groove 1201 arranged at the bottom of the filler frame 10, and a limiting block 1202 arranged in the sliding groove 901 of the filler frame mounting rack 9, the limiting block 1202 is arranged as an inclined surface towards the direction in which the filler frame 10 enters, the limiting block 1202 is slidably arranged in a sleeve 1203, a spring 1204 is arranged in the sleeve 1203, the upper end of the spring 1204 abuts against the limiting block 1202, a screw rod 1205 is fixedly connected to the bottom of the limiting block 1202, the screw rod 1205 passes downward through the sleeve 1203, the spring 1204 and the bottom of the flue 8, the opening width of the flue 8 is greater than the width of the outlet of the heat exchange coil 4 when the whole is arranged, the flue gas flow space is increased to slow down the flue gas flow rate, and the flue gas can better contact the filler in the filler frame 10, the part of the screw rod 1205 passing out of the bottom of the flue 8 can be detachably sealed, and is opened when in use, the part of the screw rod 1205 passing out of the flue 8 is connected with a fixing rack 1206 through screw threads, the bottom end of the screw rod 1205 is connected with a rotating handle 1207, when the filler frame 10 is installed, the worker first rotates the rotating handle 1207 to make the limiting block 1202 move downward, and then rotates the rotating handle 1207 to make the limiting block 1202 move upward to clamp the filler frame 10 when the filler frame 10 completely enters the filler frame mounting rack 9.

[0023] Working principle: When in use, the flue gas of the oxy-glass furnace enters the heat exchange coil 4 through the exhaust port of the furnace body 2. The heat exchange coil 4 is wrapped around the outer periphery of the lower hopper 3 to preheat the glass batch material in the lower hopper 3. When the temperature monitored by the temperature sensor does not reach the preheating temperature requirement of the glass batch material, the first electric valve is closed, the first auger conveyor 5 does not work, the second electric valve is opened, and the third auger conveyor works to convey the glass batch material that does not meet the requirements to the lower hopper 3 for reheating. When the temperature monitoring shows that the glass batch material reaches the required temperature, the first electric valve is closed, the first auger conveyor 5 does not work, the second electric valve is opened, and the third auger conveyor works to convey the glass batch material that does not meet the requirements to the lower hopper 3 for reheating. When the furnace is in the working state, the second electric valve is closed and the first electric valve is opened, the second auger feeder stops working, and the first auger feeder 5 is started to feed the glass batch material in the hopper into the kiln body 2. At the same time, the stirring motor 7 is started to drive the stirring shaft to rotate, and the stirring shaft also drives the stirring to rotate. The stirring blades stir the batch material in the lower hopper 3 to make the glass batch material heated more evenly. The flue gas after heat exchange through the heat exchange coil 4 enters the flue 8, passes through the inverted "V"-shaped filler frame 10 and contacts with the dust removal filler 11 for dust removal, and then is discharged from the flue 8. When the stuffing frame 10 needs to be replaced, the limit of the limit assembly 12 is first released. The stuffing frame 10 slides toward the installation port under the action of gravity, and the hydraulic cylinder 15 is pre-started to move the push plate 14 to the bottom of the installation port. When the stuffing frame 10 is released from the limit, it slides down, and the push plate 14 is pressed against the flue baffle 1002, and then the hydraulic cylinder 15 slowly returns. After the hydraulic cylinder 15 returns, the staff replaces the stuffing frame 10 and places the stuffing frame 10 on the stuffing frame sliding frame 13. The flue baffle 1002 of the stuffing frame 10 is in contact with the push plate 14, and the hydraulic cylinder 15 is started. The piston rod of the hydraulic cylinder 15 pushes the push plate 14 upward along the stuffing frame sliding frame 13 The stuffing frame 10 moves upward, and the stuffing frame 10 also moves upward along the stuffing frame sliding frame 13 under the action of the push plate 14. Continuing to push upward, the stuffing frame 10 enters the flue 8 through the installation port. The length of the stuffing frame 10 is greater than the thickness of the flue wall. That is, when the slide bar 1001 of the stuffing frame 10 moves to the stuffing frame mounting frame 9 and cooperates with the slide groove 901 of the stuffing frame mounting frame 9, the tail of the stuffing frame 10 is still engaged with it on the stuffing frame sliding frame 13. The hydraulic cylinder 15 continues to push until the stuffing frame 10 completely enters the stuffing frame mounting frame 9 and is fixed with the limit assembly 12. The flue baffle 1002 provided on the stuffing frame blocks the installation port, and the hydraulic cylinder 15 returns to its position.

[0024] The above description is only a preferred embodiment of the present invention. Therefore, any equivalent changes or modifications made according to the structure, features and principles described in the scope of the present invention patent application are included in the scope of the present invention patent application.

Claims

1. An oxygen glass furnace, comprising a base, the base being fixedly connected to the ground, the furnace body being fixed on the base, a smoke exhaust port being provided on the top of the furnace body, a melting pool being provided in the furnace body, and a feed port being provided on one side of the melting pool, characterized in that: The smoke exhaust port is connected to an incoming material preheating mechanism through a pipeline. The incoming material preheating mechanism includes a lower hopper and a heat exchange coil. The lower hopper is provided with a feeding port. The heat exchange coil is wrapped around the outer wall of the lower hopper. The heat exchange coil is provided with a smoke inlet and a smoke outlet. The smoke inlet is connected to the smoke exhaust port through a pipeline, and the smoke outlet is connected to a smoke dust removal mechanism through a pipeline.

2. The all-oxygen glass furnace according to claim 1, characterized in that: The smoke inlet of the heat exchange coil is arranged at the bottom thereof, and the first discharge port and the second discharge port are arranged at the bottom of the lower hopper, the first discharge port is connected to the first auger conveyor, the feed port of the first auger conveyor is connected to the feed port of the kiln body, the second discharge port is connected to the second auger conveyor, the second auger conveyor is arranged obliquely, the feed port of the second auger conveyor is connected to the feeding port of the lower hopper, a temperature sensor is arranged in the lower hopper above the first discharge port and the second discharge port, the first discharge port is provided with a first electric valve, and the second discharge port is provided with a second electric valve.

3. The all-oxygen glass furnace according to claim 1, characterized in that: A stirring motor is fixed on the top of the feeding hopper, an output end of the stirring motor is connected to a stirring shaft, and a stirring blade is provided on the stirring shaft.

4. The all-oxygen glass furnace according to claim 1, characterized in that: The flue gas dust removal mechanism includes a flue connected to the smoke outlet of the heat exchange coil, and an inverted "V"-shaped filling frame mounting frame arranged in the flue, a filling frame slidably arranged in the filling frame mounting frame, a dust collection filler in the filling frame, a filling frame mounting frame provided with a slide groove, a sliding strip cooperating with the slide groove is provided on the filling frame, mounting openings are provided for the filling frame on the outer walls on both sides of the flue, the filling frame is clamped in the filling frame mounting frame through a limiting component, a flue baffle is fixed to the rear end of the filling frame, a filling frame sliding frame is connected to the mounting opening opened on the outer wall of the flue, the filling frame can slide in the filling frame sliding frame, and the filling frame can slide into the filling frame mounting frame by the filling frame sliding frame, a push plate is provided in the filling frame sliding frame, and the rear side wall of the push plate is fixedly connected to a hydraulic cylinder.

5. The all-oxygen glass furnace according to claim 4, characterized in that: The limiting assembly includes a limiting groove arranged at the bottom of the filling frame, and a limiting block arranged in the slide groove of the filling frame mounting frame. The limiting block is set as an inclined surface in the direction of entry of the filling frame. The limiting block can be slidably arranged in the sleeve. A spring is provided in the sleeve. The upper end of the spring abuts against the limiting block. A screw is fixedly connected to the bottom of the limiting block. The screw passes downward through the sleeve, the spring and the bottom of the flue. The part of the screw passing through the flue is connected to the fixing frame through a threaded connection, and the bottom end of the screw is connected to a rotating handle.

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