Tail gas waste heat recycling device for bell-type annealing furnace

Abstract

The utility model relates to the technical field of waste heat recycling, and provides a bell type annealing furnace tail gas waste heat recycling device which comprises a device body, an exhaust structure is arranged on one side of the device body, the exhaust structure comprises a transition box, a connecting box, an air supply pipe, an exhaust pipe, a supporting seat and a suction fan, and the supporting seat is arranged on one side of the device body. The exhaust structure is arranged, under the air suction effect of the suction fans, when tail gas with heat sucked away reaches the connecting box, the suction fans suck the tail gas into the transition box, the tail gas is exhausted to the outside through the air supply pipe and the exhaust pipe, and by arranging the two sets of suction fans, only one suction fan is turned on in the using process, and the tail gas can be exhausted to the outside through the air supply pipe and the exhaust pipe. When the tail gas waste heat recycling device is used, the situation that normal exhaust is inconvenient after equipment is damaged can be avoided, the tail gas waste heat recycling device has the function of facilitating exhaust, and the convenience and the working efficiency of the tail gas waste heat recycling device for the bell-type annealing furnace are improved when the tail gas waste heat recycling device for the bell-type annealing furnace is used.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of waste heat recycling, particularly relates to a cover type annealing furnace tail gas waste heat recycling device. BACKGROUND

[0002] With the aggravation of global energy crisis, the reserves of traditional energy resources are gradually exhausted, the cover type annealing furnace as the commonly used equipment in industrial production, its tail gas emission contains a large amount of heat energy, if directly discharged into the atmosphere, not only will cause the waste of energy, also will increase the environmental burden. The heat energy in the tail gas is recycled and reused, which is of great significance to improve energy utilization efficiency, reduce energy consumption and reduce environmental pollution, therefore, a cover type annealing furnace tail gas waste heat recycling device needs to be designed;

[0003] Therefore, the patent with the publication number CN217403068U discloses a tail gas waste heat recycling device, which comprises a drying machine, an exhaust chimney and a return air pipe, the left end of the return air pipe is connected with the exhaust chimney, the right lower end of the return air pipe is connected with the upper end of the drying fan, the inner side of the return air pipe is provided with a temperature sensor, the upper end of the return air pipe is provided with a connecting rod, and the upper end of the connecting rod is fixedly provided with a processor. The utility model overcomes the defects of the prior art, by setting the return air pipe and the drying fan, when the drying fan works, the rotating shaft with the fan blade rotates to generate a suction force in the return air pipe. Since the other end of the return air pipe is installed at one third of the height of the exhaust chimney, the return air pipe can suck the tail gas and waste heat discharged from the exhaust chimney. Through the action of the drying fan, the recovered heat can be quickly transmitted into the drying machine, achieving the effect of energy saving and emission reduction, and reducing the power consumption of the drying machine.

[0004] Although the tail gas waste heat recycling device in the above can quickly transmit the recovered heat into the drying machine during use, if the smoke exhaust assembly is damaged, it is not convenient to normally exhaust the flue gas in time, therefore, a cover type annealing furnace tail gas waste heat recycling device needs to be designed. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a cover type annealing furnace tail gas waste heat recycling device, which solves the defect that the existing cover type annealing furnace tail gas waste heat recycling device is not convenient to normally exhaust the flue gas in time if the smoke exhaust assembly is damaged.

[0006] In order to solve the above technical problems, the utility model provides the following technical scheme: a cover type annealing furnace tail gas waste heat recycling device, which comprises a device body;

[0007] One side of the device body is provided with an exhaust structure;

[0008] The exhaust structure comprises a transition box, a connecting box, a gas supply pipe, an exhaust pipe, a supporting seat and a suction fan.

[0009] The support seat is arranged on one side of the device body, a connecting box is fixed at the middle position of the top end of the support seat, transition boxes are fixed at both ends of the connecting box, a gas delivery pipe is fixed at the side of the connecting box away from the device body, an exhaust pipe is fixed at the side of the gas delivery pipe away from the connecting box, and air suction fans are fixed at the side of the transition boxes away from the connecting box.

[0010] Further, the device body comprises a shell, an inner cavity, a reserved slot and a protective cover, the inner cavity is arranged in the shell, the reserved slots are arranged in the inner sides of the shells at both sides of the inner cavity, and the protective cover is fixed to the outer wall of the shell outside the reserved slot.

[0011] Further, the inner cavity is provided with a heat exchange structure, and the outer wall of the shell outside the reserved slot is provided with a dustproof structure.

[0012] Further, the dustproof structure comprises dustproof plates, dustproof holes and fixing bolts, the dustproof plates are arranged on the outer wall of the shell outside the reserved slot, the dustproof holes are uniformly arranged in the dustproof plates, and the fixing bolts are arranged at the corner positions in the dustproof plates.

[0013] Further, the dustproof holes are equidistantly distributed in the dustproof plates, and one end of the fixing bolts extends into the shell.

[0014] Further, the heat exchange structure comprises heat exchange pipes, connecting pipes, water inlet pipes and water outlet pipes, the heat exchange pipes are uniformly arranged in the inner cavity, the connecting pipes are fixed at both ends of the heat exchange pipes, the water inlet pipe is fixed to one side in the shell, and the water outlet pipe is fixed to the side in the shell away from the water inlet pipe.

[0015] Further, the lower ends of the water inlet pipe and the water outlet pipe extend into the inner cavity and are fixedly connected with the outer wall of the connecting pipe.

[0016] Further, the connecting box and the shell are connected with each other through a pipeline, and the connecting box and the transition box are connected with each other.

[0017] Further, the electromagnetic valves are fixed at both ends of the connecting box.

[0018] The cover type annealing furnace tail gas waste heat recycling device has the advantages that:

[0019] By setting up the exhaust structure, under the suction of the air suction fan, when the tail gas which has been sucked away heat reaches the connecting box, the air suction fan will suck the tail gas into the transition box, and through the air supply pipe and the exhaust pipe, the tail gas is discharged to the outside, by setting up two groups of air suction fans, only one air suction fan can be opened during use, and the other one is used as a spare, which can avoid the inconvenience of normal exhaust after the equipment is damaged, realize the function of convenient exhaust of the device, improve the convenience and working efficiency of the cover type annealing furnace tail gas waste heat recycling device during use;

[0020] By setting up the dustproof structure, under the filtering effect of the dustproof hole, large particles and dust in the tail gas can be blocked outside the dustproof hole, preventing dust particles from entering the inner cavity, realizing the function of convenient filtering of the tail gas of the device, improving the convenience of the cover type annealing furnace tail gas waste heat recycling device during use;

[0021] By setting up the heat exchange structure, warm water is injected into the inside of the heat exchange pipe through the water inlet pipe, and the warm water exchanges heat with the high-temperature tail gas through the heat exchange pipe, and the warm water gradually rises, and then is discharged outside through the water outlet pipe, which can reduce the loss and waste of heat in the tail gas, realize the function of convenient recycling of the tail gas waste heat of the device, and improve the working efficiency of the cover type annealing furnace tail gas waste heat recycling device during use. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is the overall three-dimensional structure schematic diagram of the utility model;

[0023] Figure 2 It is the main view cross section structure schematic diagram of the utility model;

[0024] Figure 3 It is the overhead cross section structure schematic diagram of the utility model;

[0025] Figure 4 It is the side view cross section three-dimensional structure schematic diagram of the utility model;

[0026] Figure 5 It is the side view cross section structure schematic diagram of the utility model.

[0027] Explanation of reference numerals in the drawing: 1, device body; 11, shell; 12, inner cavity; 13, reserved groove; 14, protective cover; 2, dustproof structure; 21, dustproof plate; 22, dustproof hole; 23, fixed bolt; 3, heat exchange structure; 31, heat exchange pipe; 32, connecting pipe; 33, water inlet pipe; 34, water outlet pipe; 4, exhaust structure; 41, transition box; 42, connecting box; 43, air supply pipe; 44, exhaust pipe; 45, support seat; 46, air suction fan. DETAILED DESCRIPTION

[0028] 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 scope of the utility model.

[0029] Please refer to Figures 1-5 The utility model provides a cover type annealing furnace tail gas waste heat recycling device, including device body 1.

[0030] Refer to Figure 2 And Figure 3 Device body 1 includes shell 11, inner chamber 12, reservation groove 13 and protective cover 14, the inside of shell 11 is provided with inner chamber 12, the inside of shell 11 on both sides of inner chamber 12 is provided with reservation groove 13, the outer wall of shell 11 on the outside of reservation groove 13 is fixed with protective cover 14, the inside of inner chamber 12 is provided with heat exchange structure 3, heat exchange structure 3 includes heat exchange pipe 31, connecting pipe 32, water inlet pipe 33 and water outlet pipe 34, heat exchange pipe 31 is evenly arranged in the inside of inner chamber 12, both ends of heat exchange pipe 31 are fixed with connecting pipe 32, water inlet pipe 33 is fixed to one side in the inside of shell 11, water outlet pipe 34 is fixed to the side away from water inlet pipe 33 in the inside of shell 11, the low end of water inlet pipe 33 and water outlet pipe 34 all extends to the inside of inner chamber 12 and is fixedly connected with the outer wall of connecting pipe 32.

[0031] Through water inlet pipe 33, hot water is injected into the inside of heat exchange pipe 31, and the hot water exchanges heat with high-temperature tail gas through heat exchange pipe 31, and the hot water gradually rises, and then is discharged outward through water outlet pipe 34 for utilization, which can reduce the loss and waste of heat in the tail gas.

[0032] Refer to Figure 2 And Figure 3 The outer wall of shell 11 on the outside of reservation groove 13 is fixed with dustproof structure 2, dustproof structure 2 includes dustproof plate 21, dustproof hole 22 and fixed bolt 23, dustproof plate 21 is arranged on the outer wall of shell 11 on the outside of reservation groove 13, dustproof hole 22 is evenly arranged in the inside of dustproof plate 21, and fixed bolt 23 penetrates the corner position in the inside of dustproof plate 21, dustproof hole 22 is distributed at equal intervals in the inside of dustproof plate 21, and one end of fixed bolt 23 extends to the inside of shell 11.

[0033] Under the filtering effect of dustproof hole 22, large-particle impurities and dust in the tail gas can be blocked outside dustproof hole 22, so that dust particles are prevented from entering the inside of inner chamber 12.

[0034] Refer to Figure 1 And Figure 5The side of the device body 1 is provided with an exhaust structure 4, the exhaust structure 4 includes a transition box 41, a connecting box 42, a gas supply pipe 43, an exhaust pipe 44, a support seat 45 and a suction fan 46, the support seat 45 is arranged on the side of the device body 1, the connecting box 42 is fixed at the middle position of the top end of the support seat 45, the two ends of the connecting box 42 are both fixed with the transition box 41, the side, away from the device body 1, of the connecting box 42 is fixed with the gas supply pipe 43, the side, away from the connecting box 42, of the gas supply pipe 43 is fixed with the exhaust pipe 44, the side, away from the connecting box 42, of the transition box 41 is fixed with the suction fan 46, the connecting box 42 and the shell 11 are communicated with each other through a pipeline, the connecting box 42 and the transition box 41 are communicated with each other, and the two ends of the connecting box 42 are both fixed with electromagnetic valves.

[0035] An external power supply is started to start the suction fan 46, under the suction effect of the suction fan 46, when the tail gas, which has been sucked away heat, reaches the connecting box 42, the suction of the suction fan 46 can suck the tail gas into the transition box 41, and the tail gas is discharged to the outside through the gas supply pipe 43 and the exhaust pipe 44, by arranging two groups of suction fans 46, only one of the suction fans 46 can be opened in use, and the other one is used as a standby, so that normal exhaust can be avoided after the equipment is damaged.

[0036] 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 to part of the technical features, and any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A cover annealing furnace tail gas waste heat recycling device, comprising a device body (1); Characterized in that: One side of the device body (1) is provided with an exhaust structure (4); The exhaust structure (4) comprises a transition box (41), a connecting box (42), a gas supply pipe (43), an exhaust pipe (44), a support seat (45) and an air suction fan (46); The support seat (45) is arranged on one side of the device body (1), the connecting box (42) is fixed at the middle position of the top end of the support seat (45), the connecting box (42) is fixed with the transition box (41) at both ends, the connecting box (42) is fixed with the gas supply pipe (43) away from the device body (1), the gas supply pipe (43) is fixed with the exhaust pipe (44) away from the connecting box (42), and the transition box (41) is fixed with the air suction fan (46) away from the connecting box (42).

2. The cover annealing furnace tail gas waste heat recycling device according to claim 1, characterized in that: The device body (1) comprises an outer shell (11), an inner cavity (12), a reserved groove (13) and a protective cover (14), the inner cavity (12) is formed in the inner part of the outer shell (11), the reserved grooves (13) are formed in the inner part of the outer shell (11) on both sides of the inner cavity (12), and the protective cover (14) is fixed on the outer wall of the outer shell (11) outside the reserved grooves (13).

3. The cover annealing furnace tail gas waste heat recycling device according to claim 2, characterized in that: A heat exchange structure (3) is arranged in the inner cavity (12), and a dust prevention structure (2) is fixed on the outer wall of the outer shell (11) outside the reserved grooves (13).

4. The cover annealing furnace tail gas waste heat recycling device according to claim 3, characterized in that: The dust prevention structure (2) comprises a dust prevention plate (21), a dust prevention hole (22) and a fixing bolt (23), the dust prevention plate (21) is arranged on the outer wall of the outer shell (11) outside the reserved grooves (13), the dust prevention holes (22) are uniformly formed in the inner part of the dust prevention plate (21), and the fixing bolts (23) are penetrated through the corner positions in the inner part of the dust prevention plate (21).

5. The cover annealing furnace tail gas waste heat recycling device according to claim 4, characterized in that: The dust prevention holes (22) are equally spaced in the inner part of the dust prevention plate (21), and one end of the fixing bolt (23) extends into the inner part of the outer shell (11).

6. The cover type annealing furnace tail gas waste heat recycling device according to claim 3, characterized in that: The heat exchange structure (3) comprises heat exchange pipes (31), connecting pipes (32), water inlet pipes (33) and water outlet pipes (34), the heat exchange pipes (31) are uniformly arranged in the inner cavity (12), the connecting pipes (32) are fixed at both ends of the heat exchange pipes (31), the water inlet pipes (33) are fixed on one side in the inner part of the outer shell (11), and the water outlet pipes (34) are fixed on the side in the inner part of the outer shell (11) away from the water inlet pipes (33).

7. The cover type annealing furnace tail gas waste heat recycling device according to claim 6, characterized in that: The lower ends of the water inlet pipes (33) and the water outlet pipes (34) extend into the inner cavity (12) and are fixedly connected with the outer wall of the connecting pipes (32).

8. The cover type annealing furnace tail gas waste heat recycling device according to claim 1, characterized in that: The connecting box (42) and the outer shell (11) are connected with each other through a pipeline, and the connecting box (42) and the transition box (41) are connected with each other.

9. The cover type annealing furnace tail gas waste heat recycling device according to claim 1, characterized in that: Electromagnetic valves are fixed at both ends of the connecting box (42).

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