Energy-saving waste heat recovery boiler

Abstract

The utility model discloses an energy-saving waste heat recovery boiler which comprises a boiler body. The heat energy recovery pipe is arranged on the boiler body; the smoke exhaust pipe is mounted on the heat energy recovery pipe; the spiral heat exchange pipe is arranged on the inner wall of the heat energy recovery pipe; the transverse moving mechanism and the cleaning mechanism are installed in the heat energy recovery pipe, the cleaning mechanism is used for cleaning dust attached to the spiral heat exchange pipe, and the transverse moving mechanism is used for controlling the cleaning mechanism to move transversely. According to the energy-saving waste heat recovery boiler provided by the scheme, waste heat in smoke can be efficiently recovered, the auxiliary cleaning function on the spiral heat exchange pipe is achieved, a worker can conveniently clean dust attached to the spiral heat exchange pipe, and time and labor are saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of waste heat recovery boilers, and particularly relates to an energy-saving waste heat recovery boiler. Background Art

[0002] A waste heat recovery boiler is an efficient energy utilization device. It recovers low-grade heat energy such as waste gas and waste heat generated in the industrial production process, and converts it into available heat energy or steam through a heat exchange process for production or domestic use.

[0003] The existing energy-saving waste heat recovery boilers recover the waste heat in the flue gas through spiral heat exchange tubes. However, the existing energy-saving waste heat recovery boilers often do not have an auxiliary cleaning function for the spiral heat exchange tubes. Therefore, it is necessary for the staff to periodically disassemble the boiler to clean the dust attached to the spiral heat exchanger, which is time-consuming and laborious. Summary of the Utility Model

[0004] The utility model provides an energy-saving waste heat recovery boiler, aiming to solve the problem that the existing energy-saving waste heat recovery boilers often do not have an auxiliary cleaning function for the spiral heat exchange tubes, and it is not convenient to clean the dust attached to the spiral heat exchange tubes as mentioned in the above background art.

[0005] To solve the above problems, the utility model is realized as follows. An energy-saving waste heat recovery boiler includes: a boiler body; a heat energy recovery pipe horizontally extending on the boiler body; a smoke exhaust pipe installed on the top of the heat energy recovery pipe; a spiral heat exchange pipe arranged in the heat energy recovery pipe; a transverse movement mechanism and a cleaning mechanism installed inside the heat energy recovery pipe. The cleaning mechanism is used to clean the dust attached to the spiral heat exchange tube, and the transverse movement mechanism is used to control the transverse movement of the cleaning mechanism.

[0006] Preferably, a drain groove located below the spiral heat exchange tube is formed on the bottom inner wall of the heat energy recovery pipe. A drain pipe is arranged at the bottom of the heat energy recovery pipe, and the drain pipe is communicated with the drain groove. An electromagnetic valve is arranged on the drain pipe. A limiting groove adjacent to the drain groove is formed on the bottom inner wall of the heat energy recovery pipe.

[0007] Preferably, the transverse movement mechanism includes: a servo motor fixedly installed at the free end of the heat energy recovery pipe; a screw rod rotatably installed on the inner wall of the heat energy recovery pipe and fixedly connected to the output shaft of the servo motor; a sliding plate threadedly sleeved on the screw rod and slidably connected to the two inner walls of the limiting groove. The top of the sliding plate is slidably matched with the top inner wall of the heat energy recovery pipe.

[0008] Preferably, the cleaning mechanism includes: a rotary joint fixedly installed in the middle of the sliding plate; a horizontal pipe provided at one end of the rotary joint and extending towards the spiral heat exchange pipe; a U-shaped plate fixedly sleeved on the horizontal pipe, the center of the closed end of the U-shaped plate is sleeved with the horizontal pipe, and the open end of the U-shaped plate faces the spiral heat exchange pipe; a plurality of shunt pipes provided on the horizontal pipe and located inside the U-shaped plate; a plurality of L-shaped pipes fixedly laid on the inner wall of the U-shaped plate and having one end communicating with the horizontal pipe; and spray heads provided on the shunt pipes and the L-shaped pipes.

[0009] Preferably, a driving motor is fixedly installed on the sliding plate, a driving gear is fixedly sleeved on the output shaft of the driving motor, a driven gear is fixedly sleeved on the horizontal pipe, and the driving gear meshes with the driven gear.

[0010] Preferably, a booster pump is fixedly installed on the outer wall of the top of the heat recovery pipe, a hose is provided at the water discharge end of the booster pump, the hose communicates with the rotary joint, and a water inlet pipe is provided at the water inlet end of the booster pump.

[0011] Preferably, a strip-shaped sliding opening is formed at the bottom of the heat recovery pipe, a smoke baffle is slidably installed on the strip-shaped sliding opening, a tooth groove is provided on one side of the smoke baffle, a stepping motor is fixedly installed on the outer wall of the bottom of the heat recovery pipe, and a flat gear is fixedly sleeved on the output shaft of the stepping motor, and the flat gear meshes with the tooth groove.

[0012] Compared with the related art, the energy-saving waste heat recovery boiler provided by the present invention has the following beneficial effects:

[0013] Compared with the prior art, for the energy-saving waste heat recovery boiler provided by this solution, the boiler body serves as the core bearing structure of the entire waste heat recovery system. The boiler body is not only responsible for generating thermal energy products such as steam or hot water, but also provides a stable installation foundation for the heat recovery device thereon. The heat recovery pipe is ingeniously arranged on the boiler body and is used to capture and guide the waste heat in the boiler flue gas. This design enables the waste heat that might otherwise be directly discharged into the atmosphere and cause energy waste to be effectively utilized, effectively improving the overall energy efficiency of the boiler. The flue gas pipe is installed on the heat recovery pipe and is used to discharge the flue gas. The spiral heat exchange pipe is arranged on the inner wall of the heat recovery pipe, and its unique spiral structure increases the contact area and heat exchange time between the flue gas and the heat exchange medium, thereby realizing the efficient recovery of waste heat. This design not only improves the heat recovery efficiency but also enhances the structural compactness and thermal stability of the equipment. The transverse movement mechanism is installed inside the heat recovery pipe and is used to control the horizontal movement of the cleaning mechanism. This mechanism enables the cleaning work to fully cover the surface of the spiral heat exchange pipe, ensuring that the heat exchange pipe always maintains good heat exchange efficiency and avoiding performance degradation caused by dust accumulation. The cleaning mechanism works in combination with the transverse movement mechanism to automatically clean the dust attached to the spiral heat exchange pipe. This design effectively solves the problems such as increased thermal resistance and decreased heat exchange efficiency caused by dust accumulation in the flue gas pipeline of traditional boilers, ensuring the long-term efficient operation of the boiler. At the same time, the automatic cleaning function also reduces the frequency and difficulty of manual maintenance, improving the automation level and operation reliability of the equipment;

[0014] In summary, the energy-saving waste heat recovery boiler described in the present invention realizes the efficient recovery and utilization of the waste heat in the boiler flue gas through innovative designs such as integrating the heat recovery pipe, spiral heat exchange pipe, transverse movement mechanism, and cleaning mechanism, and ensures the continuous efficient operation and easy maintenance of the equipment. This technical solution not only has significant economic and social benefits but also provides strong technical support for energy conservation, emission reduction, and green development in the boiler industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is the front view structural schematic diagram of an energy-saving waste heat recovery boiler provided by the present utility model;

[0016] Figure 2 is Figure 1 the three-dimensional assembly structural schematic diagram of the U-shaped plate, horizontal pipe, and L-shaped pipe in;

[0017] Figure 3 is Figure 1 the enlarged structural schematic diagram of part A shown in;

[0018] Figure 4 is Figure 1 the enlarged structural schematic diagram of part B shown in.

[0019] Reference numerals: 1, boiler body; 2, heat energy recovery pipe; 3, exhaust pipe; 4, spiral heat exchange pipe; 5, drainage tank; 6, drain pipe; 7, solenoid valve; 8, limit groove; 9, servo motor; 10, screw; 11, sliding plate; 12, rotary joint; 13, horizontal pipe; 14, U-shaped plate; 15, shunt pipe; 16, L-shaped pipe; 17, drive motor; 18, driving gear; 19, driven gear; 20, booster pump; 21, hose; 22, water inlet pipe; 23, strip-shaped sliding opening; 24, smoke baffle; 25, tooth groove; 26, stepper motor; 27, flat gear. Detailed implementation manners

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above drawings are intended to cover non-exclusive inclusion. The terms "first", "second", etc. in the specification and claims of this application or the above drawings are used to distinguish different objects and not to describe a specific order; the terms "inner", "outer", "left", "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0021] Reference to "embodiment" herein means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of this application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0022] An embodiment of the present utility model provides an energy-saving waste heat recovery boiler, as Figures 1-3 shown, the energy-saving waste heat recovery boiler includes: a boiler body 1; a heat energy recovery pipe 2 horizontally extending on the boiler body 1; an exhaust pipe 3 installed on the top of the heat energy recovery pipe 2; a spiral heat exchange pipe 4 arranged in the heat energy recovery pipe 2; a transverse movement mechanism and a cleaning mechanism installed inside the heat energy recovery pipe 2, the cleaning mechanism is used to clean the dust attached to the spiral heat exchange pipe 4, and the transverse movement mechanism is used to control the transverse movement of the cleaning mechanism.

[0023] In this embodiment, the boiler body 1 serves as the core bearing structure of the entire waste heat recovery system. The boiler body is not only responsible for generating heat energy products such as steam or hot water, but also provides a stable installation foundation for the heat energy recovery device on it. The heat energy recovery pipe 2 is ingeniously arranged on the boiler body and is used to capture and guide the waste heat in the boiler flue gas. This design enables the waste heat that might otherwise be directly discharged into the atmosphere and cause energy waste to be effectively utilized, effectively improving the overall energy efficiency of the boiler. The flue gas pipe 3 is installed on the heat energy recovery pipe and is used to discharge the flue gas. The spiral heat exchange pipe 4 is arranged on the inner wall of the heat energy recovery pipe, and its unique spiral structure increases the contact area and heat exchange time between the flue gas and the heat exchange medium, thus realizing the efficient recovery of waste heat. This design not only improves the heat recovery efficiency, but also enhances the structural compactness and thermal stability of the equipment. The transverse movement mechanism is installed inside the heat energy recovery pipe and is used to control the movement of the cleaning mechanism in the horizontal direction. This mechanism enables the cleaning work to fully cover the surface of the spiral heat exchange pipe, ensuring that the heat exchange pipe always maintains good heat exchange efficiency and avoiding performance degradation caused by dust accumulation. The cleaning mechanism works in combination with the transverse movement mechanism to automatically clean the dust attached to the spiral heat exchange pipe. This design effectively solves the problems such as increased thermal resistance and decreased heat exchange efficiency caused by dust accumulation in the flue gas pipeline of traditional boilers, ensuring the long-term efficient operation of the boiler. At the same time, the automatic cleaning function also reduces the frequency and difficulty of manual maintenance, improving the automation level and operation reliability of the equipment;

[0024] In summary, the energy-saving waste heat recovery boiler described in the present invention realizes the efficient recovery and utilization of the waste heat in the boiler flue gas through innovative designs such as integrating the heat energy recovery pipe, the spiral heat exchange pipe, the transverse movement mechanism, and the cleaning mechanism, and ensures the continuous efficient operation and easy maintenance of the equipment. This technical solution not only has significant economic and social benefits, but also provides strong technical support for energy conservation, emission reduction, and green development in the boiler industry.

[0025] In a further preferred embodiment of the present utility model, a drainage groove 5 located below the spiral heat exchange pipe is opened on the bottom inner wall of the heat energy recovery pipe 2. A drain pipe 6 is arranged at the bottom of the heat energy recovery pipe 2, and the drain pipe 6 is communicated with the drainage groove 5. An electromagnetic valve 7 is arranged on the drain pipe 6. A limiting groove 8 adjacent to the drainage groove is opened on the bottom inner wall of the heat energy recovery pipe 2.

[0026] In this embodiment, the waste water generated by cleaning the spiral heat exchange pipe 4 can be collected through the drainage groove 5, and the waste water in the drainage groove 5 can be discharged through the drain pipe 6 and the electromagnetic valve 7.

[0027] In a further preferred embodiment of the present utility model, the transverse movement mechanism includes: a servo motor 9 fixedly installed at the free end of the heat recovery pipe 2; a screw rod 10 rotatably installed on the inner wall of the heat recovery pipe 2 and fixedly connected to the output shaft of the servo motor 9; a sliding plate 11 threadedly sleeved on the screw rod 10 and slidably connected to the inner walls on both sides of the limiting groove 8, the top of the sliding plate being slidably fitted with the top inner wall of the heat recovery pipe.

[0028] In this embodiment, driving the screw rod 10 to rotate by the servo motor 9 can drive the sliding plate 11 to move horizontally, and the cleaning mechanism can be driven to move horizontally by the sliding plate 11.

[0029] In a further preferred embodiment of the present utility model, the cleaning mechanism includes: a rotary joint 12 fixedly installed in the middle of the sliding plate 11; a transverse pipe 13 provided at one end of the rotary joint 12 extending towards the spiral heat exchange pipe; a U-shaped plate 14 fixedly sleeved on the transverse pipe 13, the center of the closed end of the U-shaped plate being sleeved with the transverse pipe, and the open end of the U-shaped plate facing the spiral heat exchange pipe; a plurality of shunt pipes 15 provided on the transverse pipe 13 and located inside the U-shaped plate; a plurality of L-shaped pipes 16 fixedly laid on the inner wall of the U-shaped plate 14 and having one end communicating with the transverse pipe 13; and nozzles provided on the shunt pipes and the L-shaped pipes 16.

[0030] In this embodiment, water can be introduced into the plurality of L-shaped pipes 16 and the plurality of shunt pipes 15 through the transverse pipe 13, and the clear water can be sprayed onto the spiral heat exchange pipe 4 through the nozzles on the L-shaped pipes 16 and the plurality of shunt pipes 15, so as to clean the soot attached to the spiral heat exchange pipe 4.

[0031] In a further preferred embodiment of the present utility model, a driving motor 17 is fixedly installed on the sliding plate 11, a driving gear 18 is fixedly sleeved on the output shaft of the driving motor 17, a driven gear 19 is fixedly sleeved on the transverse pipe 13, and the driving gear 18 meshes with the driven gear 19.

[0032] In this embodiment, the transverse pipe 13 can be driven to rotate through the driving motor 17, the driving gear 18 and the driven gear 19, so as to drive the cleaning mechanism to rotate.

[0033] In a further preferred embodiment of the present utility model, a booster pump 20 is fixedly installed on the outer wall at the top of the heat recovery pipe 2, a hose 21 is provided at the water discharge end of the booster pump 20, the hose 21 communicates with the rotary joint 12, and a water inlet pipe 22 is provided at the water inlet end of the booster pump 20.

[0034] In this embodiment, the booster pump 20 can pump clear water, inject it into the transverse pipe 13 after pressurization through the hose 21 and the rotary joint 12.

[0035] In a further preferred embodiment of the present utility model, a strip-shaped sliding opening 23 is provided at the bottom of the heat energy recovery pipe 2. A smoke baffle 24 is slidably mounted on the strip-shaped sliding opening 23. A tooth groove 25 is provided on one side of the smoke baffle 24. A stepping motor 26 is fixedly mounted on the outer wall of the bottom of the heat energy recovery pipe 2. A flat gear 27 is fixedly sleeved on the output shaft of the stepping motor 26. The flat gear 27 meshes with the tooth groove 25.

[0036] In this embodiment, the cleaning mechanism can be shielded by the smoke baffle 24, so that the flue gas is led out of the heat energy recovery pipe 2 along the exhaust pipe 3. The stepping motor 26 drives the flat gear 27 to rotate meshingly on the tooth groove 25, which can drive the smoke baffle 24 to move up and down.

[0037] In summary, compared with the related art, the present device can not only efficiently recover the waste heat in the flue gas, but also has an auxiliary cleaning function for the spiral heat exchange pipe, which is convenient for the staff to clean the dust attached to the spiral heat exchanger, saving time and effort.

[0038] In several embodiments provided by the present application, it should be understood that the disclosed device can be implemented in other ways.

[0039] The above embodiments are only used to illustrate the technical solutions of the present utility model, rather than to limit the protection scope of the utility model. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all embodiments. Based on these embodiments, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present utility model. Although the present utility model has been described in detail with reference to the above embodiments, those of ordinary skill in the art can still, without conflict, make combinations, additions, deletions or other adjustments to the features in the embodiments of the present utility model according to the situation without creative efforts, so as to obtain different technical solutions that are essentially not divorced from the concept of the present utility model, and these technical solutions also fall within the scope of protection of the present utility model.

Claims

1. An energy-saving waste heat recovery boiler, characterized in that, Comprising: The boiler body; A heat energy recovery pipe horizontally extending on the boiler body; A smoke exhaust pipe installed on the top of the heat energy recovery pipe; A spiral heat exchange pipe arranged in the heat energy recovery pipe; A transverse movement mechanism and a cleaning mechanism installed inside the heat energy recovery pipe, the cleaning mechanism is used to clean the dust attached to the spiral heat exchange pipe, and the transverse movement mechanism is used to control the transverse movement of the cleaning mechanism.

2. The energy-saving waste heat recovery boiler according to claim 1, characterized in that, A drain groove located below the spiral heat exchange pipe is opened on the bottom inner wall of the heat energy recovery pipe, a drain pipe is arranged at the bottom of the heat energy recovery pipe, the drain pipe is communicated with the drain groove, a solenoid valve is arranged on the drain pipe, and a limit groove adjacent to the drain groove is opened on the bottom inner wall of the heat energy recovery pipe.

3. The energy-saving waste heat recovery boiler according to claim 2, wherein The transverse movement mechanism includes: A servo motor fixedly installed at the free end of the heat energy recovery pipe; A screw rod rotatably installed on the inner wall of the heat energy recovery pipe and fixedly connected to the output shaft of the servo motor; A sliding plate threadedly sleeved on the screw rod and slidably connected to the inner walls on both sides of the limit groove, and the top of the sliding plate is slidably matched with the top inner wall of the heat energy recovery pipe.

4. The energy-saving waste heat recovery boiler according to claim 3, characterized in that, The cleaning mechanism includes: A rotary joint fixedly installed in the middle of the sliding plate; A transverse pipe extending towards the spiral heat exchange pipe at one end of the rotary joint; A U-shaped plate fixedly sleeved on the transverse pipe, the center of the closed end of the U-shaped plate is sleeved on the transverse pipe, and the open end of the U-shaped plate faces the spiral heat exchange pipe; A plurality of shunt pipes arranged on the transverse pipe and inside the U-shaped plate; A plurality of L-shaped pipes fixedly laid on the inner wall of the U-shaped plate and communicated with the transverse pipe at one end; Nozzles arranged on the shunt pipes and the L-shaped pipes.

5. The energy-saving waste heat recovery boiler according to claim 4, characterized in that, A driving motor is fixedly installed on the sliding plate, a driving gear is fixedly sleeved on the output shaft of the driving motor, a driven gear is fixedly sleeved on the transverse pipe, and the driving gear meshes with the driven gear.

6. The energy-saving waste heat recovery boiler according to claim 4, wherein A booster pump is fixedly installed on the outer wall of the top of the heat energy recovery pipe, a hose is arranged at the drainage end of the booster pump, the hose is communicated with the rotary joint, and a water inlet pipe is arranged at the water inlet end of the booster pump.

7. The energy-saving waste heat recovery boiler according to claim 1, characterized in that, A strip-shaped sliding opening is opened at the bottom of the heat energy recovery pipe, a smoke baffle is slidably installed on the strip-shaped sliding opening, a tooth groove is arranged on one side of the smoke baffle, a stepping motor is fixedly installed on the outer wall of the bottom of the heat energy recovery pipe, and a flat gear is fixedly sleeved on the output shaft of the stepping motor, and the flat gear meshes with the tooth groove.

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