Energy-saving hot blast stove

Abstract

The utility model discloses an energy-saving hot-blast stove, which relates to the technical field of hot-blast stoves, and comprises a stove body, a combustion chamber and a heat exchange chamber are arranged in the stove body and are communicated through an air vent, a fixed cylinder is arranged on one side of the stove body, a fuel tank is arranged on one side of the fixed cylinder, an auger rod is arranged in the fixed cylinder, and the auger rod is connected with the fuel tank. The reciprocating screw rod, the time relay, the processor, the motor, the auger rod, the scraper and the movable frame are arranged, firstly, a worker sets an interval section through the time relay, after the preset time is reached, the processor starts the motor, the motor rotates to enable the auger rod to rotate, and the auger rod rotates to convey fuel into the combustion chamber; the aim of feeding at fixed time is achieved, workers do not need to be on duty beside the hot blast stove for feeding work, and the workload of the workers is relieved.

Description

Technical Field

[0001] The utility model relates to the technical field of hot blast stoves, in particular to an energy-saving hot blast stove. Background Art

[0002] As one of the important admixtures for cement production, slag powder has been gradually promoted throughout the country and around the world. Most slag powder production lines use vertical mills to perform grinding tasks, and hot air furnaces to preheat the mills and dry the materials.

[0003] When the existing hot air furnace is working, it heats the hot gas and the heat exchange tube, and then heats the air in the heat exchange tube. The heated hot air then dries the material. However, since the smoke after combustion contains smoke, the smoke is easy to adhere to the heat exchange tube. When the dust accumulates on the heat exchange tube to a certain extent, it will affect its thermal conductivity, thereby making the heat exchange effect poor, affecting the later processing efficiency. Utility Model Content

[0004] Based on this, the purpose of the utility model is to provide an energy-saving hot blast stove to solve the technical problems mentioned in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an energy-saving hot blast furnace, comprising a furnace body, a combustion chamber and a heat exchange chamber are arranged inside the furnace body, and the combustion chamber and the heat exchange chamber are connected through an air vent, a fixed cylinder is arranged on one side of the furnace body, a fuel tank is arranged on one side of the fixed cylinder, an auger rod is arranged inside the fixed cylinder, a driving wheel is arranged at the end of the auger rod, a baffle and a heat exchange tube are arranged inside the heat exchange chamber, a fixed frame is arranged inside the furnace body, a reciprocating screw rod is arranged on the inner side of the fixed frame, a driven wheel and a movable frame are respectively arranged on the outer surface of the reciprocating screw rod, a scraper is fixed to the bottom of the movable frame by a connecting rod, the outer surfaces of the driving wheel and the driven wheel are connected by a transmission belt, and a time relay and a processor are respectively arranged on the top of the fixed frame.

[0006] Furthermore, a grate and a slag box are provided inside the combustion chamber. The slag box is located at the bottom of the grate, and the slag box is detachable from the furnace body.

[0007] By adopting the above technical solution, the grate provides a combustion platform for the fuel, and then the residue enters the slag box. The staff can clean the slag conveniently by taking out the slag box.

[0008] Furthermore, the bottom of the fuel tank is connected to the fixed cylinder through a discharge pipe, and the upper side of the fixed cylinder is connected to the combustion chamber through a discharge pipe.

[0009] By adopting the above technical solution, the fuel enters the fixed cylinder through the down-feed pipe, and after the fuel is lifted, the fuel is added into the combustion chamber from the discharge pipe.

[0010] Furthermore, a first blower and a second blower are respectively installed on the outer surface of the furnace body, the first blower is connected to the combustion chamber, and the second blower is connected to the heat exchange pipe.

[0011] By adopting the above technical solution, the first blower can blow air into the combustion chamber, thereby making the fuel burn more vigorously and fully, and the second blower can inflate the heat exchange tube so that air enters the heat exchange tube to exchange heat with the flue gas.

[0012] Furthermore, a sliding rod is provided on the inner side of the fixed frame, and the movable frame is sleeved on the outer surface of the sliding rod.

[0013] By adopting the above technical solution, under the action of the sliding rod, the upward and downward movement of the fixing frame is made more stable.

[0014] Furthermore, the baffles are provided in multiple groups, and one side of the multiple groups of baffles is penetrated by a movable opening.

[0015] By adopting the above technical solution, the baffle forms an "S"-shaped flow channel, which increases the flow path of the flue gas and ensures the adequacy of heat exchange.

[0016] Furthermore, a plurality of through holes are passed through the top of the scraper, and the hole walls of the through holes are in contact with the tube walls of the heat exchange tubes.

[0017] By adopting the above technical solution, the scraper can move up and down to scrape most of the heat exchange tube, which plays a cleaning role and ensures the heat exchange effect.

[0018] Furthermore, a motor is installed on the top of the fixed cylinder, the output end of the motor is connected to the auger rod, and the motor is electrically connected to the time relay and the processor respectively.

[0019] By adopting the above technical solution, the time relay cooperates with the processor to control the opening and closing time of the motor. The rotation of the motor causes the auger rod to rotate, thereby achieving the purpose of automatic feeding.

[0020] Furthermore, a smoke exhaust port is provided on the other side of the furnace body, and a filter element is provided inside the smoke exhaust port.

[0021] By adopting the above technical solution, the smoke exhaust port can discharge the smoke, and the filter element can filter the smoke.

[0022] To sum up, the utility model mainly has the following beneficial effects: the utility model is provided with a reciprocating screw, a time relay, a processor, a motor, an auger rod, a scraper and a movable frame. First, the staff uses the time relay to set the interval segment. When the preset time is reached, the processor starts the motor. The rotation of the motor causes the auger rod to rotate. The rotation of the auger rod can transfer the fuel into the combustion chamber, thereby achieving the purpose of timed feeding. There is no need for the staff to be on duty next to the hot blast furnace to carry out feeding work, which reduces the workload of the staff. At the same time, when the auger rod rotates, the cooperation of the active rotor, the driven rotor and the transmission belt can drive the reciprocating screw to rotate. After the reciprocating screw rotates, the movable frame moves, and then the scraper is driven to move through the connecting rod. The scraper can clean and scrape away the smoke and dust from the heat exchange tube to prevent the smoke and dust from adhering to the heat exchange tube and affecting the heat conduction effect, thereby improving the heat exchange effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the utility model;

[0024] Figure 2 This is a schematic diagram of the cross-sectional structure of the furnace body of the utility model;

[0025] Figure 3 This is a schematic diagram of the scraper structure of the utility model;

[0026] Figure 4 For the utility model Figure 1 Schematic diagram of the baffle structure in FIG.

[0027] Figure 5 For the utility model Figure 1 Schematic diagram of the heat exchange tube structure.

[0028] In the figure: 1. furnace body; 2. fuel tank; 3. fixed cylinder; 4. fixed frame; 5. processor; 6. time relay; 7. smoke exhaust port; 8. filter element; 9. first blower; 10. second blower; 11. reciprocating screw; 12. movable frame; 13. driven rotor; 14. motor; 15. driving rotor; 16. transmission belt; 17. auger rod; 18. discharge pipe; 19. slag box; 20. grate; 21. baffle; 22. heat exchange tube; 23. connecting rod; 24. sliding rod; 25. scraper; 26. discharge pipe; 27. movable port; 28. combustion chamber; 29. ​​heat exchange chamber; 30. vent. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. The embodiments described below with reference to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model.

[0030] The following describes an embodiment of the utility model based on its overall structure.

[0031] Embodiment 1: An energy-saving hot air stove, such as Figure 1-Figure 5 As shown, it includes a furnace body 1, a combustion chamber 28 and a heat exchange chamber 29 are arranged inside the furnace body 1, and the combustion chamber 28 and the heat exchange chamber 29 are connected through a vent 30, and a sealing door is arranged on the outer surface of the heat exchange chamber 29 for cleaning the scraped smoke, a fixed cylinder 3 is arranged on one side of the furnace body 1, a fuel tank 2 is arranged on one side of the fixed cylinder 3, an auger rod 17 is arranged inside the fixed cylinder 3, and a driving wheel 15 is arranged at the end of the auger rod 17, a baffle 21 and a heat exchange tube 22 are arranged inside the heat exchange chamber 29, a fixed frame 4 is arranged inside the furnace body 1, a reciprocating screw rod 11 is arranged on the inner side of the fixed frame 4, and a driven wheel 13 and an active wheel 15 are arranged on the outer surface of the reciprocating screw rod 11, respectively. The movable frame 12 has a scraper 25 fixed to its bottom through a connecting rod 23. A plurality of through holes are passed through the top of the scraper 25, and the hole walls of the through holes are in contact with the tube walls of the heat exchange tubes 22. The scraper 25 can scrape off most of the heat exchange tubes 22 by moving up and down, thereby playing a cleaning role and ensuring the heat exchange effect. A slide bar 24 is provided on the inner side of the fixed frame 4, and the movable frame 12 is sleeved on the outer surface of the slide bar 24. Under the action of the slide bar 24, the up and down movement of the fixed frame 4 is more stable. The outer surfaces of the active runner 15 and the driven runner 13 are connected through a transmission belt 16. A time relay 6 and a processor 5 are provided on the top of the fixed frame 4 respectively.

[0032] See also Figure 2 In the above embodiment, the bottom of the fuel tank 2 is connected to the fixed cylinder 3 through the down pipe 18, and the upper side of the fixed cylinder 3 is connected to the combustion chamber 28 through the discharge pipe 26. The fuel enters the fixed cylinder 3 through the down pipe 18. After the fuel is lifted, the fuel is added to the combustion chamber 28 from the discharge pipe 26.

[0033] See also Figure 1-Figure 2 In the above embodiment, a motor 14 is installed on the top of the fixed cylinder 3, the output end of the motor 14 is connected to the auger rod 17, and the motor 14 is electrically connected to the time relay 6 and the processor 5 respectively. The time relay 6 cooperates with the processor 5 to control the opening and closing time of the motor 14. The rotation of the motor 14 causes the auger rod 17 to rotate, thereby achieving the purpose of automatic feeding.

[0034] Example 2: See Figure 2 A grate 20 and a slag box 19 are provided inside the combustion chamber 28. The slag box 19 is located at the bottom of the grate 20, and the slag box 19 is detachably arranged from the furnace body 1. The grate 20 provides a combustion platform for the fuel, and then the residue enters the slag box 19. The staff can clean the slag by taking out the slag box 19.

[0035] Example 3: See Figure 1 and Figure 5 A first blower 9 and a second blower 10 are respectively installed on the outer surface of the furnace body 1. The first blower 9 is connected to the combustion chamber 28, and the second blower 10 is connected to the heat exchange tube 22. The first blower 9 can blow air into the combustion chamber 28, thereby making the fuel burn more violently and fully. The second blower 10 can inflate the heat exchange tube 22, so that air enters the heat exchange tube 22 to exchange heat with the flue gas.

[0036] Example 4: See Figure 2-Figure 4 There are multiple groups of baffles 21, and one side of the multiple groups of baffles 21 is penetrated by a movable port 27. The baffles 21 form an "S"-shaped flow channel, which increases the flow path of the flue gas and packages the adequacy of heat exchange. The movable port 27 provides space for the scraper 25 to move up and down.

[0037] Example 5: See Figure 1-Figure 2 A smoke exhaust port 7 is provided on the other side of the furnace body 1, and a filter element 8 is provided inside the smoke exhaust port 7. The smoke exhaust port 7 can discharge the smoke, and the filter element 8 can filter the smoke.

[0038] The implementation principle of the utility model is as follows: first, the staff uses the time relay 6 to set the interval section, and then the staff adds fuel into the combustion chamber 28, and then ignites the fuel. The oxygen outside the device can be sucked into the combustion chamber 28 through the first blower 9, so that the flame in the combustion chamber 28 burns more violently, and the hot air enters the heat exchange chamber 29 through the vent 30. The second blower 10 fills the air into the heat exchange tube 22. The baffle 21 forms an "S"-shaped flow channel, which increases the flow path of the hot air. The hot air heats the air in the heat exchange tube 22, and the hot air heats the heat. The heated hot air is sent to the external slag powder drying chamber. When the predetermined time is reached, the processor 5 starts the motor 14. The rotation of the motor 14 causes the auger rod 17 to rotate. The rotation of the auger rod 17 can transfer the fuel to the combustion chamber 28. At the same time, when the auger rod 17 rotates, the cooperation of the active rotor 15, the driven rotor 13 and the transmission belt 16 can drive the reciprocating screw 11 to rotate. After the reciprocating screw 11 rotates, the movable frame 12 moves, and then the scraper 25 is driven to move through the connecting rod 23. The scraper 25 can clean and scrape off the smoke and dust from the heat exchange tube 22.

[0039] Although an embodiment of the utility model has been shown and described, this specific embodiment is only an explanation of the utility model and is not a limitation of the utility model. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contribution as needed without departing from the principles and purpose of the utility model. However, as long as they are within the scope of the claims of the utility model, they are protected by patent law.

Claims

1. An energy-saving hot blast furnace, comprising a furnace body (1), characterized in that: The furnace body (1) is provided with a combustion chamber (28) and a heat exchange chamber (29) inside, and the combustion chamber (28) and the heat exchange chamber (29) are connected through a vent (30); a fixed cylinder (3) is provided on one side of the furnace body (1); a fuel tank (2) is provided on one side of the fixed cylinder (3); an auger rod (17) is provided inside the fixed cylinder (3); a driving wheel (15) is provided at the end of the auger rod (17); a baffle (21) and a heat exchange tube (22) are provided inside the heat exchange chamber (29); and the furnace body A fixed frame (4) is provided inside the (1), a reciprocating screw rod (11) is provided inside the fixed frame (4), a driven rotating wheel (13) and a movable frame (12) are provided on the outer surface of the reciprocating screw rod (11), a scraper (25) is fixed to the bottom of the movable frame (12) through a connecting rod (23), the outer surfaces of the driving rotating wheel (15) and the driven rotating wheel (13) are connected by a transmission belt (16), and a time relay (6) and a processor (5) are provided on the top of the fixed frame (4).

2. The energy-saving hot blast stove according to claim 1, characterized in that: A grate (20) and a slag box (19) are provided inside the combustion chamber (28); the slag box (19) is located at the bottom of the grate (20), and the slag box (19) is detachably arranged from the furnace body (1).

3. The energy-saving hot blast stove according to claim 1, characterized in that: The bottom of the fuel tank (2) is connected to the fixed cylinder (3) through a discharge pipe (18), and the upper side of one side of the fixed cylinder (3) is connected to the combustion chamber (28) through a discharge pipe (26).

4. The energy-saving hot blast stove according to claim 1, characterized in that: A first blower (9) and a second blower (10) are respectively installed on the outer surface of the furnace body (1); the first blower (9) is connected to the combustion chamber (28), and the second blower (10) is connected to the heat exchange pipe (22).

5. The energy-saving hot blast stove according to claim 1, characterized in that: A sliding rod (24) is provided on the inner side of the fixed frame (4), and the movable frame (12) is sleeved on the outer surface of the sliding rod (24).

6. The energy-saving hot blast stove according to claim 1, characterized in that: The baffle plates (21) are provided in a plurality of groups, and a movable opening (27) is penetrated on one side of the plurality of groups of baffle plates (21).

7. The energy-saving hot blast stove according to claim 1, characterized in that: A plurality of through holes are passed through the top of the scraper (25), and the hole walls of the through holes are in contact with the tube wall of the heat exchange tube (22).

8. The energy-saving hot blast stove according to claim 1, characterized in that: A motor (14) is installed on the top of the fixed cylinder (3), the output end of the motor (14) is connected to the auger rod (17), and the motor (14) is electrically connected to the time relay (6) and the processor (5) respectively.

9. The energy-saving hot blast stove according to claim 1, characterized in that: A smoke exhaust port (7) is provided on the other side of the furnace body (1), and a filter element (8) is provided inside the smoke exhaust port (7).

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