Self-cleaning heat exchanger

Abstract

The utility model provides a self-cleaning heat exchanger which comprises a frame, a plurality of heat exchange mechanisms, a driving mechanism, a liquid inlet pipe, a liquid discharge pipe and a cleaning mechanism, the frame is fixed inside a flue gas discharge port, and the heat exchange mechanisms are fixed inside the frame. The input ends of the heat exchange mechanisms are connected with the liquid inlet pipe, the output ends of the heat exchange mechanisms are connected with the liquid outlet pipe, and the liquid inlet pipe and the liquid outlet pipe are connected with corresponding external equipment. Cleaning mechanisms are fixed to the frame, the output ends of the cleaning mechanisms all face the corresponding heat exchange mechanisms, and the input ends of the cleaning mechanisms are connected with external corresponding equipment. A driving mechanism is fixed to the outer side face of the frame, and the output end of the driving mechanism is connected with the heat exchange mechanism. When the flue gas heat exchanger is used, heat energy in the flue gas pipeline can be fully utilized, heat exchange pipes in the heat exchange mechanism can be comprehensively cleaned, and shutdown operation is not needed in the cleaning process.

Description

TECHNICAL FIELD

[0001] The utility model belongs to heat exchanger technical field especially relates to a self -cleaning heat exchanger. BACKGROUND

[0002] In the field of waste incineration, high-temperature flue gas carries abundant heat energy. If this heat energy can be effectively utilized, not only can it improve energy use efficiency, but also can significantly reduce environmental pollution. Therefore, installing a heat exchanger inside the flue has become an important technical means. As a kind of heat transfer equipment, the core function of heat exchanger is to efficiently transfer the heat energy in flue gas to other media, such as cooling water or air. This process has a wide range of applications in energy recovery, industrial heating and other fields.

[0003] However, the application of heat exchanger in waste incineration flue is facing some challenges. Because the flue gas contains a large amount of dust and impurities, these substances are easy to deposit on the pipe wall when flowing through the heat exchange pipe, forming ash deposit. The existence of ash deposit not only seriously hinders the heat transfer, resulting in a significant decrease in heat exchange efficiency, but also may become a safety hazard, such as causing blockage or local overheating.

[0004] In order to solve the problem of ash deposit, the traditional method is to manually stop and clean the heat exchange pipe using special tools after the heat exchanger runs for a period of time. However, this method not only consumes time and effort, increases maintenance cost, but also seriously affects the continuous operation ability and overall efficiency of the equipment. Especially in the industrial environment that needs continuous operation, frequent shutdown for cleaning will bring many inconveniences and economic losses.

[0005] In order to improve this situation, the existing solution is to add a cleaning mechanism inside the heat exchanger, which can remove the ash deposit on the surface of the heat exchange pipe by spraying gas or liquid. However, this improved scheme also faces some problems in actual use: because the heat exchange pipes are usually arranged densely, in order to achieve comprehensive cleaning of each heat exchange pipe, a large number of cleaning pipes need to be laid around and in the middle of the heat exchange mechanism. This not only increases the complexity and manufacturing cost of the equipment, but also may cause blockage of flue gas flow, affecting the heat exchange effect.

[0006] Therefore, it is necessary to invent a heat exchanger that can efficiently exchange heat and automatically clean. UTILITY MODEL CONTENT

[0007] The utility model aims at providing a self-cleaning heat exchanger to solve the problems mentioned in the background.

[0008] To solve the above technical problems, the utility model is realized by the following technical scheme:

[0009] The utility model discloses a kind of self-cleaning heat exchangers, including frame, heat exchange mechanism, driving mechanism, liquid inlet pipe, liquid outlet pipe and cleaning mechanism, the frame is fixed in flue gas outlet inside by bolt, wherein the inside of frame is fixed with several heat exchange mechanisms;The input end of heat exchange mechanism is connected with liquid inlet pipe, and the output end of heat exchange mechanism is connected with liquid outlet pipe, wherein liquid inlet pipe and liquid outlet pipe are connected with corresponding external equipment respectively;Cleaning mechanism is fixed on the frame, wherein the output end of cleaning mechanism is towards corresponding heat exchange mechanism, and the input end of cleaning mechanism is connected with external corresponding equipment;Driving mechanism is fixed on the outside of frame, wherein the output end of driving mechanism is connected with heat exchange mechanism.

[0010] Further, the heat exchange mechanism includes heat exchange pipe, transfer plate, rotating pipe, base and rotary joint, wherein both ends of the heat exchange pipe are fixed with transfer plates, and the heat exchange pipe is communicated with the inner cavity of the transfer plate;The other side of the transfer plate is fixed with rotating pipe, wherein the rotating pipe is communicated with the inner cavity of the corresponding transfer plate;The outer side of the rotating pipe is rotatably connected with the corresponding base through support bearing, wherein the base is fixed with the frame by bolt;The other end of the rotating pipe is connected with the liquid inlet pipe or the liquid outlet pipe through the rotary joint, and the outer side of the rotating pipe is connected with the output end of the driving mechanism, which can exchange heat with high-temperature flue gas inside the flue gas outlet, and the heat exchange pipe can rotate under the driving of the driving mechanism.

[0011] Further, the heat exchange mechanism further includes first housing, second housing, connecting pipe and exhaust pipe, the first housing is fixed on the outer side of the rotating pipe by bolt, wherein the outer side of the first housing is rotatably mounted with the second housing by sealing bearing, wherein the first housing and the second housing are communicated inside;The second housing is fixed with the frame by bolt, and the outer side of the second housing is fixed with the connecting pipe, wherein the other end of the connecting pipe is connected with the cleaning mechanism;The outer side of the second housing is fixed with several exhaust pipes, wherein the exhaust pipe is fixed through the transfer plate, which can clean the heat exchange pipe from the middle of the heat exchange mechanism.

[0012] Further, the driving mechanism includes motor, rack and chain transmission mechanism, the motor is installed on the frame by rack, wherein the output end of the motor is connected with corresponding rotating pipe through chain transmission mechanism, which can drive the rotating pipe to rotate.

[0013] Further, the cleaning mechanism comprises a feeding pipe, a conveying pipe, a side pipe, a middle pipe and a spray head, the conveying pipe is fixed on the upper and lower sides of the frame through pipe clamps respectively, and the outer side of one of the conveying pipes is fixed with the feeding pipe, the other end of the feeding pipe is connected with the corresponding external equipment; the side pipe and the middle pipe are fixed between the conveying pipes respectively, the side pipe is fixed on the outer side of the frame through a pipe clamp, and the middle pipe is arranged between the corresponding heat exchange mechanisms; the outer sides of the side pipe and the middle pipe are fixed with a plurality of spray heads, the output ends of the spray heads are all directed to the corresponding heat exchange mechanisms; and the outer side of the conveying pipe is fixed with a connecting pipe through a tee joint, so that the heat exchange mechanism can be cleaned.

[0014] Compared with the prior art, the utility model has the advantages of:

[0015] When the dust attached to the heat exchange mechanism needs to be cleaned, the gas or liquid can be sprayed on the heat exchange pipe on the side of the heat exchange mechanism through the cleaning mechanism, and the heat exchange pipe on the outer side of the heat exchange mechanism can be cleaned comprehensively by rotating the heat exchange pipe in the heat exchange mechanism through the driving mechanism, meanwhile, the gas or liquid in the cleaning mechanism can be sprayed out from the middle part of the heat exchange mechanism through the cooperation of the first shell, the second shell, the connecting pipe and the exhaust pipe, so that the heat exchange pipe on the inner side of the heat exchange mechanism can be cleaned, and in addition, the heat exchange pipe does not need to be stopped for cleaning. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment description, obviously, the drawings in the following description are only some embodiments of the utility model, and for the ordinary skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0017] Figure 1 It is the structural schematic diagram of the utility model.

[0018] Figure 2 It is the structural schematic diagram of the heat exchange mechanism and the driving mechanism of the utility model.

[0019] Figure 3 It is the sectional view structural schematic diagram of the heat exchange mechanism of the utility model.

[0020] Figure 4 It is the partial structural schematic diagram of the heat exchange mechanism of the utility model.

[0021] Figure 5 It is the structural schematic diagram of the cleaning mechanism of the utility model.

[0022] Fig.:

[0023] 1 - frame, 2 - heat exchange mechanism, 21 - heat exchange pipe, 22 - transfer plate, 23 - rotating pipe, 24 - base, 25 - rotating joint, 26 - first shell, 27 - second shell, 28 - connecting pipe, 29 - exhaust pipe, 3 - driving mechanism, 31 - motor, 32 - rack, 33 - chain transmission mechanism, 4 - liquid inlet pipe, 5 - liquid outlet pipe, 6 - cleaning mechanism, 61 - feed pipe, 62 - feed pipe, 63 - side pipe, 64 - middle pipe, 65 - spray head. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0025] In the description of the present application, it should be understood that the terms "upper", "middle", "outer", "inner", "periphery" and the like indicate the orientation or positional relationship, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the indicated components or elements must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0026] Please refer to Figures 1 to 5 As shown in the drawings, the present application is a self-cleaning heat exchanger, which comprises a frame 1, a heat exchange mechanism 2, a driving mechanism 3, a liquid inlet pipe 4, a liquid outlet pipe 5 and a cleaning mechanism 6. The frame 1 is fixed inside the flue gas exhaust outlet by bolts, and a plurality of heat exchange mechanisms 2 are fixed inside the frame 1. The input ends of the heat exchange mechanisms 2 are connected to the liquid inlet pipe 4, and the output ends of the heat exchange mechanisms 2 are connected to the liquid outlet pipe 5. The liquid inlet pipe 4 and the liquid outlet pipe 5 are respectively connected to the corresponding external equipment. The cleaning mechanism 6 is fixed on the frame 1, and the output ends of the cleaning mechanism 6 are directed towards the corresponding heat exchange mechanisms 2. The input ends of the cleaning mechanism 6 are connected to the corresponding external equipment. The driving mechanism 3 is fixed on the outer side of the frame 1, and the output ends of the driving mechanism 3 are connected to the heat exchange mechanisms 2.

[0027] Specifically, the heat exchange mechanism 2 comprises heat exchange pipes 21, transfer plates 22, rotating pipes 23, bases 24 and rotating joints 25, both ends of the heat exchange pipes 21 are fixed with the transfer plates 22, and the heat exchange pipes 21 communicate with the inner cavities of the transfer plates 22; the other side of each of the transfer plates 22 is fixed with the rotating pipe 23, and the rotating pipe 23 communicates with the inner cavity of the corresponding transfer plate 22; the outer side of each of the rotating pipes 23 is rotatably connected with the corresponding base 24 through a support bearing, and each of the bases 24 is fixed with the frame 1 through a bolt; the other end of each of the rotating pipes 23 is connected with the liquid inlet pipe 4 or the liquid outlet pipe 5 through the rotating joint 25, and the outer side of each of the rotating pipes 23 is connected with the output end of the driving mechanism 3; when in use, the cold water inside the external equipment enters the liquid inlet pipe 4, and then passes through the corresponding rotating joint 25, rotating pipe 23, transfer plate 22 and enters the heat exchange pipe 21, and exchanges heat with the high-temperature flue gas inside the flue gas outlet, so that the cold water becomes hot water, and then the hot water passes through the corresponding transfer plate 22, rotating pipe 23, rotating joint 25 and liquid outlet pipe 5 and is discharged into the corresponding external equipment; in addition, the heat exchange pipes 21, transfer plates 22 and rotating pipes 23 can be driven to rotate by the driving mechanism 3.

[0028] Specifically, the heat exchange mechanism 2 further comprises a first housing 26, a second housing 27, a connecting pipe 28 and exhaust pipes 29, the first housing 26 is fixed on the outer side of the rotating pipe 23 through a bolt, the outer side of the first housing 26 is rotatably installed with the second housing 27 through a sealing bearing, and the inner cavities of the first housing 26 and the second housing 27 communicate; the second housing 27 is fixed with the frame 1 through a bolt, and the outer side of the second housing 27 is fixed with the connecting pipe 28, and the other end of the connecting pipe 28 is connected with the cleaning mechanism 6; the outer side of the second housing 27 is fixed with a plurality of exhaust pipes 29, and the exhaust pipes 29 are fixed through the transfer plates 22; when in use, the liquid or gas inside the cleaning mechanism 6 passes through the connecting pipe 28 and enters between the first housing 26 and the second housing 27, and then is sprayed towards the heat exchange pipes 21 through the exhaust pipes 29, so that the heat exchange pipes 21 are cleaned; in addition, the first housing 26 and the exhaust pipes 29 rotate correspondingly during the rotation of the rotating pipes 23, while the second housing 27 is stationary.

[0029] Specifically, the driving mechanism 3 comprises a motor 31, a rack 32 and a chain transmission mechanism 33, the motor 31 is installed on the frame 1 through the rack 32, and the output end of the motor 31 is connected with the corresponding rotating pipe 23 through the chain transmission mechanism 33; when in use, the rotating pipe 23 can be driven to rotate by the cooperation of the motor 31 and the chain transmission mechanism 33

[0030] Specifically, the cleaning mechanism 6 comprises a feeding pipe 61, a conveying pipe 62, a side pipe 63, a middle pipe 64 and a spray head 65, the conveying pipe 62 is fixed on the upper and lower sides of the frame 1 by pipe clamps respectively, and the outer side of one of the conveying pipes 62 is fixed with the feeding pipe 61, the other end of the feeding pipe 61 is connected with the corresponding external equipment; the side pipe 63 and the middle pipe 64 are fixed between the conveying pipes 62 respectively, the side pipe 63 is fixed on the outer side of the frame 1 by a pipe clamp, and the middle pipe 64 is arranged between the corresponding heat exchange mechanisms 2; the outer sides of the side pipe 63 and the middle pipe 64 are both fixed with a plurality of spray heads 65, the output ends of the spray heads 65 all face the corresponding heat exchange mechanisms 2; the outer side of the conveying pipe 62 is fixed with a connecting pipe 28 through a tee joint, when in use, the feeding pipe 61 can receive the liquid or gas discharged by the corresponding external equipment, then the liquid or gas is conveyed into the side pipe 63 and the middle pipe 64 through the conveying pipe 62, and finally the liquid or gas is sprayed to the heat exchange mechanism 2 through the spray head 65, so as to clean the heat exchange mechanism 2.

[0031] Please refer to Figures 1-5 The utility model discloses a self-cleaning heat exchanger, and the working principle is as follows: when in use, cold water enters the heat exchange mechanism 2 through the liquid inlet pipe 4, is changed into hot water after high-efficiency heat exchange with the high-temperature flue gas in the flue gas pipeline, and is then discharged through the liquid outlet pipe 5, when cleaning is needed, the cleaning mechanism 6 and the driving mechanism 3 are started, so that the corresponding liquid or gas is uniformly sprayed on the heat exchange pipe 21, and the heat exchange pipe 21 is cleaned.

[0032] In the description of the present specification, the description of the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are contained in at least one embodiment or example of the utility model. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0033] The preferred embodiments of the utility model disclosed above are only used for helping explaining the utility model. The preferred embodiments do not describe all the details, and the utility model is not limited to the specific embodiments described. Obviously, according to the content of the present specification, many modifications and changes can be made. The present specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the utility model, so that the person skilled in the art can well understand and utilize the utility model. The utility model is limited by the claims and the whole scope and equivalents thereof.

Claims

1. A self-cleaning heat exchanger, comprising a frame (1), a heat exchange mechanism (2), a driving mechanism (3), a liquid inlet pipe (4), a liquid outlet pipe (5) and a cleaning mechanism (6), characterized in that: The frame (1) is fixed inside the flue gas exhaust, wherein the inside of the frame (1) is fixed with several heat exchange mechanisms (2); the input end of the heat exchange mechanism (2) is connected with the liquid inlet pipe (4), and the output end of the heat exchange mechanism (2) is connected with the liquid outlet pipe (5), wherein the liquid inlet pipe (4) and the liquid outlet pipe (5) are respectively connected with corresponding external equipment; the frame (1) is fixed with a cleaning mechanism (6), wherein the output end of the cleaning mechanism (6) is directed to the corresponding heat exchange mechanism (2), and the input end of the cleaning mechanism (6) is connected with the corresponding external equipment; the outside of the frame (1) is fixed with a driving mechanism (3), wherein the output end of the driving mechanism (3) is connected with the heat exchange mechanism (2).

2. A self-cleaning heat exchanger as claimed in claim 1, characterized in that: The heat exchange mechanism (2) comprises a heat exchange pipe (21), a transfer plate (22), a rotating pipe (23), a base (24) and a rotating joint (25), wherein both ends of the heat exchange pipe (21) are fixed with the transfer plate (22), and the heat exchange pipe (21) is communicated with the inner cavity of the transfer plate (22); the other side of the transfer plate (22) is fixed with the rotating pipe (23), wherein the rotating pipe (23) is communicated with the inner cavity of the corresponding transfer plate (22); the outside of the rotating pipe (23) is rotatably connected with the corresponding base (24), wherein the base (24) is fixed with the frame (1); the other end of the rotating pipe (23) is connected with the liquid inlet pipe (4) or the liquid outlet pipe (5) through the rotating joint (25), and the outside of the rotating pipe (23) is connected with the output end of the driving mechanism (3).

3. A self-cleaning heat exchanger as claimed in claim 2, characterized in that: The heat exchange mechanism (2) further comprises a first housing (26), a second housing (27), a connecting pipe (28) and an exhaust pipe (29), the first housing (26) is fixed on the outside of the rotating pipe (23), wherein the outside of the first housing (26) is rotatably installed with the second housing (27), wherein the inside of the first housing (26) and the second housing (27) is communicated; the second housing (27) is fixed with the frame (1), and the outside of the second housing (27) is fixed with the connecting pipe (28), wherein the other end of the connecting pipe (28) is connected with the cleaning mechanism (6); the outside of the second housing (27) is fixed with several exhaust pipes (29), wherein the exhaust pipes (29) are fixed through the transfer plate (22).

4. A self-cleaning heat exchanger as claimed in claim 2, wherein: The driving mechanism (3) comprises a motor (31), a rack (32) and a chain transmission mechanism (33), the motor (31) is installed on the frame (1) through the rack (32), wherein the output end of the motor (31) is connected with the corresponding rotating pipe (23) through the chain transmission mechanism (33).

5. A self-cleaning heat exchanger as claimed in claim 3, wherein: The cleaning mechanism (6) comprises a feeding pipe (61), a conveying pipe (62), a side pipe (63), a middle pipe (64) and a spray head (65), the conveying pipes (62) are respectively fixed on the upper and lower sides of the frame (1), and the outer side of one of the conveying pipes (62) is fixed with the feeding pipe (61), the other end of the feeding pipe (61) is connected with the corresponding external equipment; the side pipes (63) and the middle pipes (64) are respectively fixed between the conveying pipes (62), the side pipes (63) are fixed on the outer side of the frame (1), and the middle pipes (64) are arranged between the corresponding heat exchange mechanisms (2); the outer sides of the side pipes (63) and the middle pipes (64) are respectively fixed with a plurality of spray heads (65), and the output ends of the spray heads (65) all face the corresponding heat exchange mechanisms (2); the outer side of the conveying pipe (62) is provided with a connecting pipe (28).

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