A waste gas recovery device

Abstract

The application discloses a waste gas recovery device, which comprises a waste heat recovery tank, three heating cavities are arranged in the waste heat recovery tank, a ventilation pipe is rotationally connected in the waste heat recovery tank, a plurality of sealing adapter rings are fixedly connected to the outer side wall of the ventilation pipe, the sealing adapter rings are sealingly and rotationally connected with the waste heat recovery tank, four one-way valves are arranged in the waste heat recovery tank, and the four one-way valves divide three air slots in the ventilation pipe. In the application, the three heating cavities are arranged, three temperature gradient differences are arranged, the temperature of the finally discharged waste gas is based on the temperature of the low-temperature cavity, the temperature is already very low, the recovery of the waste heat in the high-temperature waste gas can be obviously improved, the heat energy loss is reduced, and the recovery efficiency of the waste heat in the high-temperature waste gas is further improved through the forward and reverse rotation of the driving motor.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of high-temperature waste gas recovery, and particularly relates to a waste gas recovery device. BACKGROUND

[0002] In use of the existing waste gas recovery device, the waste heat recovery device in the waste gas recovery device recovers waste heat, water heating is based on the temperature difference between the waste gas and the water, the higher the temperature difference, the higher the heating efficiency, and finally the temperature of the waste gas and the water tends to be consistent, so that after the water is heated into hot water, the waste gas still contains a lot of waste heat, but the waste heat cannot be well recovered and utilized, so that the waste heat recovery efficiency is not high enough. SUMMARY

[0003] The present application aims at solving the problems in the prior art, such as the waste heat recovery efficiency of the existing waste gas recovery device is not high enough.

[0004] In order to achieve the above-mentioned purpose, the present application adopts the following technical scheme:

[0005] A waste gas recovery device, comprising a waste heat recovery tank, three heating cavities are arranged in the waste heat recovery tank, a ventilation pipe is rotatably connected in the waste heat recovery tank, a plurality of sealing adapter rings are fixedly connected to the outer side wall of the ventilation pipe, the sealing adapter rings are rotatably connected with the waste heat recovery tank, four one-way valves are arranged in the waste heat recovery tank, the four one-way valves divide three air slots in the ventilation pipe, the three air slots are arranged in one-to-one correspondence with the three heating cavities, a plurality of communication holes are arranged in the outer side wall of the ventilation pipe and communicated with the air slots, a plurality of groups of limiting rings are symmetrically fixedly connected to the outer side wall of the ventilation pipe and arranged in two-by-two groups, the limiting rings are arranged close to the communication holes, a plurality of rotating rings are rotatably connected to the outer side wall of the ventilation pipe and arranged between two limiting rings, a plurality of heating pipes are fixedly connected between every two adjacent rotating rings, the plurality of heating pipes are arranged in spiral symmetry about the ventilation pipe, a plurality of spiral fan blades are fixedly connected in the air slots, a rotating bevel gear and an air exchange bevel gear are respectively arranged in the outer side wall of the ventilation pipe, and a driving device is arranged on the outer side wall of the waste heat recovery tank.

[0006] Preferably, the driving device comprises a support plate fixedly connected to one side wall of the waste heat recovery box near the rotating helical gear, a driving motor is arranged on the support plate, a driving shaft is fixedly connected to the output end of the driving motor, a driving helical gear is arranged on the outer side wall of the driving shaft, the driving helical gear is meshed with the rotating helical gear and the air exchange helical gear at two sides respectively, and a working switching device is arranged on the driving shaft.

[0007] Preferably, the working switching device comprises a threaded rod fixedly connected to one side wall of the waste heat recovery box near the driving shaft, an installation groove is arranged in one end of the driving shaft near the threaded rod, a threaded ring is fixedly connected to the inner side wall of the installation groove, the threaded ring is threadedly connected to the outer side wall of the threaded rod, and a stroke buffering device is arranged on the driving shaft.

[0008] Preferably, the stroke buffering device comprises two baffle plates, both of which are fixedly connected to the outer side wall of the driving shaft, two limiting blocks are fixedly connected to the outer side wall of the driving shaft in a symmetrical manner, the driving helical gear is slidably connected to the outer side wall of the driving shaft, and a buffering spring is fixedly connected between the two side walls of the driving helical gear and the baffle plate.

[0009] Preferably, two one-way bearings are arranged on the outer side wall of the air pipe respectively, and the rotating helical gear and the air exchange helical gear are arranged on the two one-way bearings respectively.

[0010] Preferably, a bottom plate is fixedly connected to one side wall of the driving motor near the support plate, a plurality of walking wheels are rotatably connected to the outer side wall of the bottom plate through rotating shafts, and the plurality of walking wheels are slidably connected to the support plate.

[0011] Preferably, a heat preservation cavity is arranged in the waste heat recovery box, and the heat preservation cavity is in a low-pressure state close to vacuum.

[0012] The application has the following beneficial effects:

[0013] In the application, three heating cavities are arranged, three temperature gradient differences are arranged, the final exhaust gas temperature is based on the temperature of the low-temperature cavity, the temperature is already very low, the recovery of waste heat in high-temperature exhaust gas can be significantly improved, and the heat energy loss can be reduced.

[0014] If the user needs to use the water in the medium-temperature zone and the low-temperature zone, the water in the medium-temperature cavity and the low-temperature cavity can be directly used, if the user only needs the water in the high-temperature zone, the water in the medium-temperature cavity can be introduced into the high-temperature cavity for heating after the water in the high-temperature cavity reaches the temperature, the water in the low-temperature cavity is introduced into the medium-temperature cavity for heating, and new water is introduced into the low-temperature cavity for heating, the water in the medium-temperature cavity and the low-temperature cavity can be regarded as the preheating of water by the high-temperature exhaust gas, so that the output efficiency of high-temperature water can be improved on the premise of ensuring the efficient recovery of waste heat in high-temperature exhaust gas.

[0015] When the driving motor rotates forward, the rotating bevel gear drives the air pipe to rotate by the one-way limiting effect of the one-way bearing, and then drives the helical fan blade in the air pipe to rotate forward. Through the rotation of the helical fan blade, the flow direction of the high-temperature waste gas in the air slot is from right to left, the one-way valve is closed, the high-temperature waste gas at the right end enters the heating pipe through the communication hole and the rotating ring, and then flows back to the left end through the heating pipe, completing the circulation flow. At the same time, the air pipe also drives the rotating ring and the heating pipe to rotate in the heating cavity by the friction effect, stirs the water in the heating cavity, increases and promotes the convection, cooperates with the circulating high-temperature waste gas in the heating pipe, enhances the heating effect of the water in the heating cavity, makes the heating uniform, and improves the utilization of the heat in the high-temperature waste gas.

[0016] When the driving motor reverses, the air exchange bevel gear drives the air pipe to reverse by the one-way bearing, the helical fan blade in the air slot reverses, the high-temperature waste gas in the air slot flows from left to right, the one-way valve opens, the new high-temperature waste gas enters the air slot corresponding to the high-temperature cavity, the waste gas in the air slot corresponding to the high-temperature cavity enters the air slot corresponding to the medium-temperature cavity, the waste gas in the air slot corresponding to the medium-temperature cavity enters the air slot corresponding to the low-temperature cavity, and the waste gas in the air slot corresponding to the low-temperature cavity is discharged. Through air exchange, the heat in the high-temperature waste gas is utilized efficiently. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a front structure schematic view of a waste gas recovery device provided by the application;

[0018] Figure 2 It is an internal structure schematic view of a waste gas recovery device provided by the application;

[0019] Figure 3 It is Figure 2 An enlarged view of the middle A structure;

[0020] Figure 4 It is Figure 2 An enlarged view of the middle B structure;

[0021] Figure 5 It is a structure schematic view of a helical fan blade of a waste gas recovery device provided by the application.

[0022] In the figure: 1 waste heat recovery tank, 2 heating cavity, 3 heat preservation cavity, 4 air pipe, 5 sealing rotating ring, 6 one-way valve, 7 limiting ring, 8 rotating ring, 9 heating pipe, 10 helical fan blade, 11 rotating bevel gear, 12 air exchange bevel gear, 13 one-way bearing, 14 supporting plate, 15 driving motor, 16 driving shaft, 17 driving bevel gear, 18 limiting block, 19 baffle, 20 buffer spring, 21 threaded rod, 22 bottom plate, 23 walking wheel. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application.

[0024] With reference to Figures 1-5 A waste heat recovery device, comprising a waste heat recovery tank 1, three heating cavities 2 are arranged in the waste heat recovery tank 1, water inlet pipes and water outlet pipes (not shown) are arranged on the three heating cavities 2, a heat preservation cavity 3 is arranged in the waste heat recovery tank 1, the heat preservation cavity 3 is in a low pressure state close to vacuum, an air pipe 4 is rotatably connected in the waste heat recovery tank 1, a plurality of sealing adapter rings 5 are fixedly connected to the outer side wall of the air pipe 4, the sealing adapter rings 5 are rotatably connected with the waste heat recovery tank 1, four one-way valves 6 are arranged in the waste heat recovery tank 1, the four one-way valves 6 divide three air slots in the air pipe 4, and the three air slots are arranged in one-to-one correspondence with the three heating cavities 2.

[0025] The outer side wall of the air pipe 4 is provided with a communication hole in communication with the air slot, a plurality of groups of limiting rings 7 are symmetrically fixedly connected to the outer side wall of the air pipe 4 and arranged in two groups each, the limiting rings 7 are arranged close to the communication hole, a rotating ring 8 is rotatably connected to the outer side wall of the air pipe 4, the rotating ring 8 is located between the two limiting rings 7, a plurality of heating pipes 9 are fixedly connected between every two adjacent rotating rings 8, the plurality of heating pipes 9 are arranged in spiral symmetry about the air pipe 4, a spiral fan blade 10 is fixedly connected in the air slot, a rotating bevel gear 11 and an air exchange bevel gear 12 are arranged on the outer side wall of the air pipe 4, respectively, and two one-way bearings 13 are arranged on the outer side wall of the air pipe 4, respectively, and the rotating bevel gear 11 and the air exchange bevel gear 12 are arranged on the two one-way bearings 13, respectively.

[0026] A driving device is arranged on the outer side wall of the waste heat recovery tank 1, the driving device comprises a supporting plate 14, the supporting plate 14 is fixedly connected to one side wall of the waste heat recovery tank 1 close to the rotating bevel gear 11, a driving motor 15 is arranged on the supporting plate 14, a driving shaft 16 is fixedly connected to the output end of the driving motor 15, a driving bevel gear 17 is arranged on the outer side wall of the driving shaft 16, the two sides of the driving bevel gear 17 are meshed with the rotating bevel gear 11 and the air exchange bevel gear 12, respectively, and a working switching device is arranged on the driving shaft 16, the working switching device comprises a threaded rod 21, the threaded rod 21 is fixedly connected to one side wall of the waste heat recovery tank 1 close to the driving shaft 16.

[0027] The driving shaft 16 is provided with a mounting groove at one end close to the threaded rod 21, a threaded ring is fixedly connected to the inner side wall of the mounting groove, the threaded ring is threadedly connected to the outer side wall of the threaded rod 21, the driving shaft 16 is provided with stroke buffering devices, the stroke buffering devices include two baffle plates 19, the two baffle plates 19 are fixedly connected to the outer side wall of the driving shaft 16, two limiting blocks 18 are fixedly connected to the outer side wall of the driving shaft 16 in a symmetrical manner, a driving bevel gear 17 is slidingly connected to the outer side wall of the driving shaft 16, a buffering spring 20 is fixedly connected between the two side walls of the driving bevel gear 17 and the baffle plate 19, and the driving motor 15 is fixedly connected with a bottom plate 22 on one side wall close to the supporting plate 14, a plurality of walking wheels 23 are rotatably connected to the outer side wall of the bottom plate 22 through a rotating shaft, and the plurality of walking wheels 23 are slidingly connected to the supporting plate 14.

[0028] In use, the high-temperature waste gas enters from the left end of the air pipe 4, the three heating cavities 2 are high-temperature cavities, medium-temperature cavities and low-temperature cavities from left to right, and the heating of the high-temperature waste gas on the water is divided into three temperature intervals with gradually increasing temperatures, for example, 80-100 DEG C can be taken as the high-temperature zone, 50-80 DEG C can be taken as the medium-temperature zone, and 20-50 DEG C can be taken as the low-temperature zone, the high-temperature waste gas first enters the air slot corresponding to the high-temperature cavity through the air pipe 4, and then is dispersed into the heating pipe 9 through the connecting hole and the rotating ring 8 to heat the water in the high-temperature cavity.

[0029] The driving motor 15 is started and rotates, the output end of the driving motor 15 drives the driving bevel gear 17 to rotate through the driving shaft 16 and the limiting block 18, the driving shaft 16 drives the threaded ring to move on the threaded rod 21 through rotation, and then the driving shaft 16 moves to the left, so that the driving bevel gear 17 is in contact with the rotating bevel gear 11 and meshes with the rotating bevel gear 11, the rotating bevel gear 11 is driven, in this process, the buffering spring 20 can buffer the excess movement stroke of the driving shaft 16 while keeping the driving bevel gear 17 and the rotating bevel gear 11 in transmission, the rotating bevel gear 11 drives the air pipe 4 to rotate through the one-way limiting action of the one-way bearing 13, and then drives the helical fan blade 10 in the air pipe 4 to rotate, the flow direction of the high-temperature waste gas in the air slot is changed from right to left through the rotation of the helical fan blade 10, the one-way valve 6 is closed, the high-temperature waste gas at the right end enters the heating pipe 9 through the communication hole and the rotating ring 8, and then flows back to the left end through the heating pipe 9, and the circulation flow is completed.

[0030] Meanwhile, the air pipe 4 also drives the rotating ring 8 and the heating pipe 9 to rotate in the heating cavity 2 by the friction force, stirs the water in the heating cavity 2, increases and promotes the convection, cooperates with the high-temperature waste gas circulating in the heating pipe 9, enhances the heating effect of the water in the heating cavity 2, makes the heating uniform, improves the utilization of the heat in the high-temperature waste gas, and after the driving motor 15 is positively rotated for a period of time, when the temperature difference between the high-temperature waste gas in the air slot and the hot water in the heating cavity 2 is little, the driving motor 15 is reversely rotated, with the reverse rotation of the driving motor 15, the driving shaft 16 starts to move to the right under the threaded connection between the threaded ring and the threaded rod 21, until the driving helical gear 17 is in contact with the air exchange helical gear 12 and meshes, the air exchange helical gear 12 reversely rotates the air pipe 4 by the one-way bearing 13, the spiral fan blade 10 in the air slot reversely rotates, the high-temperature waste gas in the air slot flows from left to right, the one-way valve 6 is opened, new high-temperature waste gas enters the air slot corresponding to the high-temperature cavity, the waste gas in the air slot corresponding to the high-temperature cavity enters the air slot corresponding to the medium-temperature cavity, the waste gas in the air slot corresponding to the medium-temperature cavity enters the air slot corresponding to the low-temperature cavity, and the waste gas in the air slot corresponding to the low-temperature cavity is discharged, through air exchange, the heat in the high-temperature waste gas is efficiently utilized, and after the air exchange is completed, the driving motor 15 starts to be positively rotated.

[0031] The heating effect of the high-temperature waste gas on the water decreases with the decrease of the temperature difference, and finally the waste gas temperature and the water temperature tend to be consistent, therefore, the three heating cavities in the application are set to have three temperature gradient differences, so that the final exhaust gas temperature is based on the low-temperature cavity temperature, and the temperature is already very low, thereby the waste heat in the high-temperature waste gas can be significantly recovered, and the heat energy loss is reduced, and according to the use needs of the user, if the user needs to use the water in the medium-temperature zone and the low-temperature zone, the water in the medium-temperature cavity and the low-temperature cavity can be directly used, if the user only needs the water in the high-temperature zone, the water in the medium-temperature cavity can be introduced into the high-temperature cavity for heating after the water reaching the temperature in the high-temperature cavity is discharged, the water in the low-temperature cavity is introduced into the medium-temperature cavity for heating, and new water is introduced into the low-temperature cavity for heating, the water in the medium-temperature cavity and the low-temperature cavity can be regarded as the preheating of the water by the high-temperature waste gas, so that the output efficiency of the high-temperature water can be improved on the premise of efficiently recovering the waste heat in the high-temperature waste gas.

[0032] The above is only the preferred specific embodiment of the application, but the protection scope of the application is not limited to this, any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the application within the technical range disclosed by the application, which should be covered in the protection scope of the application.

Claims

1. A waste gas recovery device, comprising a waste heat recovery box (1), characterized in that, The waste heat recovery box (1) is provided with three heating chambers (2). A vent pipe (4) is rotatably connected inside the waste heat recovery box (1). Multiple sealing transition rings (5) are fixedly connected to the outer wall of the vent pipe (4). The sealing transition rings (5) are rotatably connected to the waste heat recovery box (1). The waste heat recovery box (1) is provided with four one-way valves (6). The four one-way valves (6) divide the vent pipe (4) into three empty slots. The three empty slots are arranged in a one-to-one correspondence with the three heating chambers (2). The outer wall of the vent pipe (4) is provided with a connecting hole that communicates with the empty slot. The outer wall of the vent pipe (4) is symmetrically fixedly connected to... Multiple sets of limiting rings (7) are arranged in pairs. The limiting rings (7) are located close to the connecting hole. A rotating ring (8) is rotatably connected to the outer wall of the vent pipe (4). The rotating ring (8) is located between two limiting rings (7). Multiple heating tubes (9) are fixedly connected between each two adjacent rotating rings (8). The multiple heating tubes (9) are spirally symmetrical about the vent pipe (4). A spiral fan blade (10) is fixedly connected in the slot. A rotating helical gear (11) and a ventilation helical gear (12) are respectively provided on the outer wall of the vent pipe (4). A driving device is provided on the outer wall of the waste heat recovery box (1). The drive device includes a support plate (14), which is fixedly connected to the side wall of the waste heat recovery box (1) near the rotating helical gear (11). A drive motor (15) is provided on the support plate (14), and a drive shaft (16) is fixedly connected to the output end of the drive motor (15). A drive helical gear (17) is provided on the outer side wall of the drive shaft (16). The two sides of the drive helical gear (17) mesh with the rotating helical gear (11) and the ventilation helical gear (12) respectively. A working switching device is provided on the drive shaft (16). The working switching device includes a threaded rod (21), which is fixedly connected to the side wall of the waste heat recovery box (1) near the drive shaft (16). The drive shaft (16) is provided with an installation groove at one end near the threaded rod (21). A threaded ring is fixedly connected to the inner side wall of the installation groove. The threaded ring is threadedly connected to the outer side wall of the threaded rod (21). The drive shaft (16) is provided with a stroke buffer device. Two one-way bearings (13) are respectively provided on the outer wall of the vent pipe (4), and the rotating helical gear (11) and the air exchange helical gear (12) are respectively provided on the two one-way bearings (13).

2. The waste gas recovery device according to claim 1, characterized in that, The stroke buffer device includes two baffles (19), both of which are fixedly connected to the outer side wall of the drive shaft (16). Two limiting blocks (18) are symmetrically fixedly connected to the outer side wall of the drive shaft (16). The drive helical gear (17) is slidably connected to the outer side wall of the drive shaft (16). Buffer springs (20) are fixedly connected between the two side walls of the drive helical gear (17) and the baffles (19).

3. The waste gas recovery device according to claim 1, characterized in that, The drive motor (15) is fixedly connected to a base plate (22) on one side wall near the support plate (14). Multiple walking wheels (23) are rotatably connected to the outer side wall of the base plate (22) via a rotating shaft. The multiple walking wheels (23) are slidably connected to the support plate (14).

4. The waste gas recovery device according to claim 1, characterized in that, The waste heat recovery box (1) is provided with a heat preservation chamber (3), and the heat preservation chamber (3) is in a low-pressure state close to vacuum.

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