Novel six-stage suspension preheater

Abstract

The utility model discloses a novel six-stage suspension preheater, which relates to the technical field of suspension preheaters, and comprises a decomposing furnace main body, a kiln tail smoke chamber, a rotary kiln, a five-stage cyclone cylinder main body and a feed port, the bottom end of the decomposing furnace main body is connected with the kiln tail smoke chamber, the front part of the kiln tail smoke chamber is connected with the rotary kiln, and the feed port is connected with the five-stage cyclone cylinder main body. A five-stage cyclone cylinder main body is arranged on the outer side of the decomposing furnace main body, and a feeding opening is connected to the outer side of the decomposing furnace main body. According to the novel six-stage suspension preheater, when the limiting plate moves, the limiting plate can slide through the two sets of mounting blocks, when the limiting plate ascends to the highest position, a threaded column can be inserted into a kiln tail smoke chamber, a partition plate can prevent part of materials from entering the decomposing furnace body, and therefore the feeding amount is controlled; meanwhile, the situation that materials in the decomposing furnace body are difficult to make full contact with high-temperature waste gas due to the too large feeding amount can be avoided, and the situation that a feeding opening is blocked can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of suspension preheater, concretely to a novel six-stage suspension preheater. BACKGROUND

[0002] Suspension preheater is important equipment in cement production process, it makes full use of the heat energy in the high temperature exhaust gas discharged from rotary kiln and decomposing furnace, preheats raw material and partially decomposes carbonate, thereby improving the thermal efficiency and production capacity of the whole production system, the existing suspension preheater still has certain defects when using.

[0003] The suspension preheater in the prior art is usually composed of several stages of heat exchange units (cyclone drums), each stage of cyclone drum preheats raw material by using high temperature exhaust gas discharged from the previous stage, the material is suspended in the exhaust gas and rapidly exchanges heat with the exhaust gas, then gas-solid separation is realized through the cyclone drum, the preheated material is collected and sent into the next stage or decomposing furnace for continuous heating and decomposition, the conventional suspension preheater is usually a five-stage suspension preheater, the five-stage suspension preheater has high coal consumption and power consumption indexes during use, and the heat exchange effect is not sufficient, meanwhile, the size of the outlet at the top of the kiln tail smoke chamber is smaller than that of the kiln tail smoke chamber, so that after the gas in the rotary kiln enters the inside of the kiln tail smoke chamber, the gas flow velocity will be reduced and the resistance will be large. CONTENT

[0004] The utility model aims at providing a novel six-stage suspension preheater to solve the problem of large gas flow resistance in the kiln tail smoke chamber of the suspension preheater on the market.

[0005] To achieve the above object, the utility model provides the following technical scheme: a novel six-stage suspension preheater, comprising: a decomposing furnace main body, a kiln tail smoke chamber, a rotary kiln, a five-stage cyclone drum main body and a feeding opening, the bottom end of the decomposing furnace main body is connected with the kiln tail smoke chamber, the front part of the kiln tail smoke chamber is connected with the rotary kiln, the outside of the decomposing furnace main body is provided with the five-stage cyclone drum main body, the outside of the decomposing furnace main body is connected with the feeding opening, the six-stage cyclone drum is connected below the five-stage cyclone drum main body through a pipeline, the front part and the rear part of the kiln tail smoke chamber are both installed with mounting blocks, the inside of two mounting blocks is commonly connected with a limiting plate through sliding, the inside of the limiting plate is connected with a screw knob through screwing, the end of the screw knob is connected with an extrusion plate, the front part and the rear part of the kiln tail smoke chamber close to the extrusion plate are both provided with connecting plates, one side of the connecting plate close to the kiln tail smoke chamber is connected with a threaded column, the outside of the threaded column is connected with a sealing gasket, the inside of the kiln tail smoke chamber is provided with a flow guide plate, the inner wall of the kiln tail smoke chamber close to the flow guide plate is connected with a stop block.

[0006] Preferably, the flow guide plate is symmetrically provided with two groups about the center of the kiln tail smoke chamber.

[0007] Preferably, the inside of the guide plate is provided with a through hole matching the size of the threaded column.

[0008] Preferably, the top of the feeding opening is provided with a mounting box, and the mounting box is provided with a limiting groove close to the inner wall of the main body of the decomposition furnace.

[0009] Preferably, the inside of the mounting box is provided with a forward-reverse motor, a screw rod is connected between the output end of the forward-reverse motor and the mounting box through a bearing, and a moving plate is threadedly connected to the outer side of the screw rod.

[0010] Preferably, the bottom of the moving plate is connected with a connecting column, and the bottom end of the connecting column is connected with a partition plate.

[0011] Preferably, the inner wall of the rotary kiln is provided with a limiting cylinder, and two limiting cylinders are jointly connected with an S-shaped heat exchange pipe.

[0012] Preferably, one end of the S-shaped heat exchange pipe is connected with a water inlet valve, the other end of the S-shaped heat exchange pipe is connected with a drain pipe, and the end of the drain pipe is connected with a water storage tank.

[0013] Preferably, the inside of the rotary kiln is inserted with a temperature sensor, the bottom end of the temperature sensor is connected with a temperature display main body through a wire harness, and the temperature sensor is connected with a heat-resistant rubber snap ring close to the outer side of the temperature display main body.

[0014] Preferably, the bottom of the rotary kiln close to the heat-resistant rubber snap ring is connected with a connecting block, and the inside of the connecting block is threadedly connected with a bolt.

[0015] Compared with the prior art, the novel six-stage suspension preheater has the advantages that when the limiting plate moves, it can slide through the two groups of mounting blocks, when the limiting plate rises to the highest position, the threaded column can be inserted into the inside of the kiln tail smoke chamber, the partition plate can block a part of the material from entering the inside of the main body of the decomposition furnace, thereby controlling the feeding amount, and at the same time, it can avoid that the feeding amount is too large, so that the material in the main body of the decomposition furnace is difficult to fully contact with the high-temperature waste gas, and the blocking of the feeding opening can be reduced.

[0016] 1. The suspension preheater is a device that realizes raw material preheating and partial decomposition of carbonate by fully dispersing, rapidly exchanging heat and high-efficiency separation of gas-solid two phases, but the airflow resistance in the kiln tail smoke chamber is relatively large, which can affect the speed of gas entering the main body of the decomposition furnace, when the limiting plate moves, it can slide through the two groups of mounting blocks, when the limiting plate rises to the highest position, the threaded column can be inserted into the inside of the kiln tail smoke chamber, when the sealing gasket side contacts the surface of the kiln tail smoke chamber, the limiting plate can be loosened, when the limiting plate is loosened, it can drop to the center position of the connecting plate, at this time the threaded knob can be tightened, so that the extrusion plate at the end of the threaded knob can extrude and fix the surface of the connecting plate, when the guide plate moves, it can drive the stop block to move, when the gas in the rotary kiln enters the inside of the kiln tail smoke chamber, the two groups of guide plates can quickly guide the gas into the main body of the decomposition furnace, reducing the resistance of the gas in the kiln tail smoke chamber, at the same time, the six-stage cyclone drum can improve the time of the material in the suspended state fully contacting with the hot gas flow, so that the heat transfer efficiency is greatly improved, and the energy consumption is reduced.

[0017] 2. During the use of the suspension preheater, the material can be added into the inside of the main body of the decomposition furnace through the feeding opening, the traditional feeding opening is difficult to adjust the feeding amount according to the actual situation, when the positive and negative motor operates, it can drive the lead screw to rotate, when the lead screw rotates, the threaded lead screw can drive the moving plate to move towards the feeding opening, when the connecting column moves, it can drive the partition plate to move, when the bottom of the partition plate moves to the specified position in the feeding opening, the positive and negative motor can be stopped, the partition plate can block a part of the material from entering the inside of the main body of the decomposition furnace, so as to control the feeding amount, at the same time, it can avoid that the feeding amount is too large, so that the material in the main body of the decomposition furnace is difficult to fully contact with the high-temperature waste gas, and the blocking of the feeding opening can be reduced.

[0018] 3. During the use of the suspension preheater, the rotary kiln continuously conveys hot gas into the inside of the kiln tail smoke chamber, but the hot gas is difficult to utilize during the conveying process, when the hot gas in the rotary kiln passes to the kiln tail smoke chamber, the water inlet valve can be opened, so that cold water can enter the S-shaped heat exchange pipe, when the hot gas passes through the S-shaped heat exchange pipe, it can heat the cold water in the S-shaped heat exchange pipe, the heated water can flow into the water storage tank through the drain pipe, the end of the temperature sensor is inserted into the rotary kiln, and then the heat-resistant rubber clasp is moved to the outside of the temperature sensor, so that the temperature sensor can be clamped in the inside of the heat-resistant rubber clasp, so as to tighten the bolt, so that the end of the bolt can extrude and fix the heat-resistant rubber clasp, so that the temperature sensor is not easy to loosen, the temperature in the rotary kiln can be monitored in real time through the temperature sensor, and the safety of the rotary kiln during use can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a front view structural schematic diagram of the utility model.

[0020] Figure 2 It is left view cut structure schematic diagram of kiln tail smoke chamber of the utility model;

[0021] Figure 3 It is main view cut structure schematic diagram of mounting block of the utility model;

[0022] Figure 4 It is the utility model Figure 2 It is the utility model

[0023] Figure 5 It is main view cut structure schematic diagram of feeding opening of the utility model;

[0024] Figure 6 It is the utility model Figure 2 It is the utility model

[0025] Figure 7 It is the utility model

[0026] In the drawing: 1, decomposition furnace main body;2, kiln tail smoke chamber;3, rotary kiln;4, five-stage cyclone main body;5, feeding opening;6, six-stage cyclone;7, mounting block;8, limiting plate;9, threaded knob;10, extrusion plate;11, connecting plate;12, threaded column;13, sealing gasket;14, guide plate;15, stop block;16, mounting box;17, limiting groove;18, forward and reverse motor;19, screw rod;20, moving plate;21, connecting column;22, partition plate;23, limiting cylinder;24, S-shaped heat exchange pipe;25, water inlet valve;26, drain pipe;27, water storage tank;28, temperature sensor;29, temperature display main body;30, heat-resistant rubber snap ring;31, connecting block;32, bolt. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0028] Please refer to Figures 1-4The utility model provides a technical scheme: a novel six-stage suspension preheater, it is including: decomposition furnace main body 1, kiln tail smoke chamber 2, rotary kiln 3, five stage cyclone barrel main body 4 and charging port 5, the bottom of decomposition furnace main body 1 is connected with kiln tail smoke chamber 2, the front of kiln tail smoke chamber 2 is connected with rotary kiln 3, the outside of decomposition furnace main body 1 is provided with five stage cyclone barrel main body 4, the outside of decomposition furnace main body 1 is connected with charging port 5, six stage cyclone 6 is connected below five stage cyclone barrel main body 4 through pipeline, the front and rear of kiln tail smoke chamber 2 are all installed mounting block 7, the inside of two mounting blocks 7 is slidably connected with limiting plate 8, the inside of limiting plate 8 is threadedly connected with screw knob 9, the end of screw knob 9 is connected with extrusion plate 10, the front and rear of kiln tail smoke chamber 2 close to extrusion plate 10 are all provided with connecting plate 11, the side close to kiln tail smoke chamber 2 of connecting plate 11 is connected with threaded column 12, the outside of threaded column 12 is connected with sealing gasket 13, the inside of kiln tail smoke chamber 2 is provided with guide plate 14, the inner wall close to kiln tail smoke chamber 2 of guide plate 14 is connected with stopper 15, guide plate 14 is about the center of kiln tail smoke chamber 2 and is provided with two groups symmetrically, the inside of guide plate 14 is penetrated and is provided with the through -hole of matching with the size of threaded column 12.

[0029] When implementing, the suspension preheater is a kind of equipment for realizing raw material preheating and carbonate partial decomposition by gas-solid two-phase full dispersion, rapid heat exchange and high efficiency separation, but the air resistance in the inside of kiln tail smoke chamber 2 is relatively large, which can affect the speed of gas entering the inside of decomposition furnace main body 1, the two groups of limiting plates 8 in the front and rear of kiln tail smoke chamber 2 can be pushed upward respectively, when limiting plate 8 moves, it can slide through two groups of mounting blocks 7, when limiting plate 8 rises to the highest position, threaded column 12 can be inserted into the inside of kiln tail smoke chamber 2, when one side of sealing gasket 13 contacts with the surface of kiln tail smoke chamber 2, limiting plate 8 can be loosened, when limiting plate 8 is loosened, it can drop to the central position of connecting plate 11, at this time, screw knob 9 can be tightened, so that the extrusion plate 10 at the end of screw knob 9 can extrude and fix the surface of connecting plate 11, then guide plate 14 is sleeved on the outside of threaded column 12, when guide plate 14 moves, it can drive stopper 15 to move, when the end of stopper 15 moves to the inner wall surface of kiln tail smoke chamber 2, nut can be sleeved on the end of threaded column 12 and tightened, so that the nut can extrude and fix guide plate 14.

[0030] Refer to Figures 1-4 When the gas in the inside of rotary kiln 3 enters the inside of kiln tail smoke chamber 2, it can be quickly guided into decomposition furnace main body 1 through two groups of guide plates 14, which can reduce the resistance of gas in the inside of kiln tail smoke chamber 2, at the same time, six stage cyclone 6 can improve the time of material in suspension state fully contacting with hot gas flow, so that the heat transfer efficiency is greatly improved, and the energy consumption is reduced.

[0031] Refer to Figure 1 andFigure 5 It is known that an installation box 16 is installed on the top of the feeding port 5. The installation box 16 has a limit groove 17 on the inner wall near the main body 1 of the decomposition furnace. A forward and reverse motor 18 is installed inside the installation box 16. The output end of the forward and reverse motor 18 is connected to the installation box 16 by a lead screw 19 through a bearing. A moving plate 20 is threaded to the outside of the lead screw 19. A connecting column 21 is connected to the bottom of the moving plate 20. A partition plate 22 is connected to the bottom end of the connecting column 21. The partition plate 22 and the feeding port 5 form a sliding structure.

[0032] In practice, during the use of the suspension preheater, materials can be added into the decomposition furnace body 1 through the feeding port 5. Traditional feeding port 5 is difficult to adjust the feeding amount according to the actual situation. When the feeding amount needs to be reduced, the forward and reverse motor 18 can be rotated forward. When the forward and reverse motor 18 is running, it can drive the lead screw 19 to rotate forward. When the lead screw 19 rotates, it can drive the moving plate 20 to move closer to the feeding port 5. When the moving plate 20 moves, it can slide with the mounting box 16 through the limiting groove 17. At the same time as the moving plate 20 moves, it can drive the connecting column 21 to move. When the connecting column 21 moves, it can drive the partition plate 22 to move. When the bottom of the partition plate 22 moves to the designated position inside the feeding port 5, the forward and reverse motor 18 can be turned off.

[0033] See Figure 1 and Figure 5 It can be seen that the partition plate 22 can block some of the material from entering the body of the decomposition furnace 1, thereby controlling the amount of material fed. At the same time, it can prevent the amount of material fed too much from causing the material inside the body of the decomposition furnace 1 to have insufficient contact with the high-temperature exhaust gas, and can reduce the possibility of blockage at the feed port 5.

[0034] See Figure 1 , Figure 2 , Figure 6 and Figure 7 It is known that the inner wall of the rotary kiln 3 is equipped with a limiting cylinder 23, and an S-shaped heat exchange tube 24 is connected between the two limiting cylinders 23. One end of the S-shaped heat exchange tube 24 is connected to a water inlet valve 25, and the other end of the S-shaped heat exchange tube 24 is connected to a drain pipe 26. The end of the drain pipe 26 is connected to a water storage tank 27. A temperature sensor 28 is inserted inside the rotary kiln 3. The bottom end of the temperature sensor 28 is connected to a temperature display body 29 through a wire harness. A heat-resistant rubber retaining ring 30 is connected to the outside of the temperature sensor 28 near the temperature display body 29. A connecting block 31 is connected to the bottom of the rotary kiln 3 near the heat-resistant rubber retaining ring 30. A bolt 32 is connected to the internal thread of the connecting block 31.

[0035] In specific implementation, during use of the floating preheater, the rotary kiln 3 continuously conveys hot gas into the kiln tail smoke chamber 2, but the hot gas is difficult to utilize during conveying. When the hot gas in the rotary kiln 3 flows into the kiln tail smoke chamber 2, the water inlet valve 25 can be opened, so that cold water can enter the S-shaped heat exchange pipe 24. When the hot gas passes through the S-shaped heat exchange pipe 24, the cold water in the S-shaped heat exchange pipe 24 is heated. The heated water can flow into the water storage tank 27 through the drain pipe 26. The hot water in the water storage tank 27 can be used for domestic water or equipment cleaning. The temperature sensor 28 is inserted into the rotary kiln 3, and the heat-resistant rubber snap ring 30 is moved to the outside of the temperature sensor 28, so that the temperature sensor 28 can be clamped in the heat-resistant rubber snap ring 30. At this time, the heat-resistant rubber snap ring 30 is located between the two groups of connecting blocks 31, so that the bolt 32 can be tightened to press and fix the heat-resistant rubber snap ring 30, so that the temperature sensor 28 is not easy to loosen.

[0036] It can be seen from Figure 1 , Figure 2 , Figure 6 and Figure 7 that the temperature sensor 28 can monitor the temperature in the rotary kiln 3 in real time, which can improve the safety of the rotary kiln 3 during use.

[0037] In summary, when the novel six-stage floating preheater is used, the two groups of limiting plates 8 in front of and behind the kiln tail smoke chamber 2 can be pushed upward. When the limiting plates 8 move, the two groups of mounting blocks 7 can slide, and the two groups of flow guide plates 14 can quickly guide the gas into the decomposition furnace body 1, reducing the resistance of the gas in the kiln tail smoke chamber 2. At the same time, the six-stage cyclone 6 can increase the time for the material to fully contact with the hot gas flow in a suspended state, greatly improving the heat transfer efficiency and reducing energy consumption. The partition plate 22 can block a part of the material from entering the decomposition furnace body 1, thereby controlling the amount of material added, and avoiding excessive material addition, which makes it difficult for the material in the decomposition furnace body 1 to fully contact with the high-temperature waste gas, and reduces the blocking of the charging port 5. The temperature sensor 28 can monitor the temperature in the rotary kiln 3 in real time, which can improve the safety of the rotary kiln 3 during use. The contents not described in detail in the description belong to the prior art known to those skilled in the art.

[0038] Although the utility model 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 make equivalent replacement for part of the technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model shall be included in the protection scope of the utility model.

Claims

1. A novel six-stage suspended preheater comprising: The utility model relates to a rotary kiln, which comprises a decomposition furnace main body (1), a kiln tail smoke chamber (2), a rotary kiln (3), a five-stage cyclone cylinder main body (4) and a feeding opening (5), characterized in that: The bottom end of the decomposition furnace main body (1) is connected with the kiln tail smoke chamber (2), the front part of the kiln tail smoke chamber (2) is connected with the rotary kiln (3), the outer side of the decomposition furnace main body (1) is provided with the five-stage cyclone cylinder main body (4), and the outer side of the decomposition furnace main body (1) is connected with the feeding opening (5). The front part and the rear part of the kiln tail smoke chamber (2) are both provided with mounting blocks (7), the interiors of the two mounting blocks (7) are jointly and slidably connected with a limiting plate (8), the interior of the limiting plate (8) is threadedly connected with a threaded knob (9), the end of the threaded knob (9) is connected with an extrusion plate (10), the front part and the rear part of the kiln tail smoke chamber (2) close to the extrusion plate (10) are both provided with connecting plates (11), one side of the connecting plate (11) close to the kiln tail smoke chamber (2) is connected with a threaded column (12), the outer side of the threaded column (12) is connected with a sealing gasket (13), the interior of the kiln tail smoke chamber (2) is provided with a flow guide plate (14), and the inner wall of the kiln tail smoke chamber (2) close to the flow guide plate (14) is connected with a stop block (15).

2. A novel six-stage suspended preheater as claimed in claim 1, wherein: The flow guide plate (14) is symmetrically provided with two groups about the center of the kiln tail smoke chamber (2).

3. A novel six-stage suspended preheater as claimed in claim 2, wherein: The interior of the flow guide plate (14) is provided with a through hole matching the size of the threaded column (12).

4. A novel six-stage suspended preheater as claimed in claim 1, wherein: The top of the feeding opening (5) is provided with a mounting box (16), and the inner wall of the mounting box (16) close to the decomposition furnace main body (1) is provided with a limiting groove (17).

5. A novel six-stage suspension preheater as claimed in claim 4, wherein: The interior of the mounting box (16) is provided with a forward and reverse motor (18), the output end of the forward and reverse motor (18) and the mounting box (16) are connected with a lead screw (19) through a bearing, and the outer side of the lead screw (19) is threadedly connected with a moving plate (20).

6. A novel six-stage suspension preheater as claimed in claim 5, wherein: The bottom of the moving plate (20) is connected with a connecting column (21), and the bottom end of the connecting column (21) is connected with a partition plate (22).

7. A novel six-stage suspended preheater as claimed in claim 1, wherein: The inner wall of the rotary kiln (3) is provided with limiting cylinders (23), and the S-shaped heat exchange pipe (24) is jointly connected between the two limiting cylinders (23).

8. A novel six-stage suspension preheater as claimed in claim 7, wherein: One end of the S-shaped heat exchange pipe (24) is connected with a water inlet valve (25), the other end of the S-shaped heat exchange pipe (24) is connected with a drain pipe (26), and the end of the drain pipe (26) is connected with a water storage tank (27).

9. A novel six-stage suspended preheater as claimed in claim 1, wherein: The interior of the rotary kiln (3) is inserted with a temperature sensor (28), the bottom end of the temperature sensor (28) is connected with a temperature display main body (29) through a wire harness, and the outer side of the temperature sensor (28) close to the temperature display main body (29) is connected with a heat-resistant rubber snap ring (30).

10. A novel six-stage suspended preheater as claimed in claim 9, wherein: The bottom of the rotary kiln (3) close to the heat-resistant rubber snap ring (30) is connected with a connecting block (31), and the interior of the connecting block (31) is threadedly connected with a bolt (32).

Images