Boiler waste heat collecting and recycling device

Abstract

The utility model discloses a boiler waste heat collecting and recycling device which comprises a heat preservation box, a filtering assembly is arranged on the top of the heat preservation box, a heating assembly is arranged in the heat preservation box, the heating assembly comprises a top shell, the top shell is fixedly installed on the inner top of the heat preservation box, and the filtering assembly is arranged on the top of the heat preservation box. A top shell is fixedly installed on the inner bottom of the heat preservation box, a bottom shell is fixedly installed on the inner bottom of the heat preservation box, a split pipe is fixedly installed between the bottom shells, the split pipe is communicated with the interior of the top shell and the interior of the bottom shell, heat conduction plates are fixedly installed between the outer sides of the bottom shells, and communication grooves are fixedly installed between the heat conduction plates. According to the boiler waste heat collecting and recycling device, through the multiple split pipes and the heat conducting plates, the contact area of heat exchange between smoke and water is greatly increased, heat in the smoke can be rapidly transferred into water, the waste heat recycling efficiency is improved, heated hot water can be effectively used for the production process, heat supply and the like, and efficient utilization of energy is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a boiler technical field, concretely is a kind of boiler waste heat collection and reuse device. BACKGROUND

[0002] Industrial production field, boiler is as the key equipment of energy conversion, is widely used in chemical industry, electric power, food processing and many other industries, with the enhancement of energy crisis and environmental protection consciousness, boiler waste heat recovery technology arises at the historic moment, it aims at the heat in the high-temperature flue gas that is directly discharged is recycled, to reduce energy consumption and reduce thermal pollution.

[0003] The heat exchange efficiency of existing equipment is low, and the traditional heat exchange structure is designed unreasonably, which leads to insufficient heat transfer between flue gas and heated medium, and cannot fully develop the potential of waste heat recovery. Since the flue gas contains various impurities, the existing device is prone to blockage during operation. Once the pipeline or filter component is blocked, it will affect the normal operation of the waste heat recovery device.

[0004] Therefore, the utility model provides a kind of boiler waste heat collection and reuse device to solve the above problems. UTILITY MODEL CONTENT

[0005] In view of the deficiencies of the prior art, the utility model provides a kind of boiler waste heat collection and reuse device, which solves the above problems.

[0006] To achieve the above purpose, the utility model is realized by the following technical scheme: a kind of boiler waste heat collection and reuse device, including heat preservation box, the top of the heat preservation box is provided with filter assembly, the inside of the heat preservation box is provided with heating assembly, the heating assembly includes top shell, the top shell is fixedly installed in the inner top of heat preservation box, the inner bottom of the heat preservation box is fixedly installed with bottom shell, the split pipe is fixedly installed between the bottom shell, the split pipe is communicated inside top shell and bottom shell, the outside of the bottom shell is fixedly installed with heat conduction plate, the heat conduction plate is fixedly installed with communication groove.

[0007] Preferably, the bottom of the heat preservation box is fixedly installed with gas outlet pipe, and the gas outlet pipe is communicated with the inside of bottom shell.

[0008] Preferably, the top of the heat preservation box is fixedly installed with water inlet pipe, and the water inlet pipe is communicated with the inside of heat preservation box, the bottom outside of the heat preservation box is fixedly installed with water outlet pipe, and the water outlet pipe is fixedly installed with valve at the connection of heat preservation box.

[0009] Preferably, the filter assembly comprises a filter box, a three-way electromagnetic valve is fixedly installed at the top of the filter box, an air inlet pipe is fixedly installed at the right side of the three-way electromagnetic valve, the bottom port of the three-way electromagnetic valve is in communication with the inside of the filter box, and a second electromagnetic valve is fixedly installed between the bottom of the filter box and the top of the heat preservation box.

[0010] Preferably, the bottom of the second electromagnetic valve is in communication with the inside of the top shell, the top of the second electromagnetic valve is in communication with the inside of the filter box, and a filter screen is fixedly installed in the inside of the filter box.

[0011] Preferably, a first electromagnetic valve is fixedly installed at the side of the filter box, an air pump is fixedly installed at the outside of the first electromagnetic valve, and the air outlet of the air pump is in communication with the inside of the filter box through the first electromagnetic valve, and the communication position is below the filter screen.

[0012] Beneficial effects

[0013] The utility model provides a kind of boiler waste heat collection and reuse device.Compared with prior art, the following beneficial effects are possessed:

[0014] 1、The boiler waste heat collection and reuse device, by multiple split pipes and heat conduction plates, greatly increases the contact area of flue gas and water heat exchange, can quickly transfer the heat in flue gas to water, improves the waste heat recovery efficiency, so that the heated hot water can be effectively used for production process, heating and the like, realizes the efficient use of energy.

[0015] 2、The boiler waste heat collection and reuse device, the filter screen arranged in the filter assembly can preliminarily filter large particle impurities in flue gas, prevent its accumulation in split pipe internal pipe blockage, simultaneously, through the cooperation of three-way electromagnetic valve, first electromagnetic valve, air pump and the like structure, the backflush cleaning of filter screen can be realized, ensure that filter screen continuously and effectively filters impurities, maintains the stable operation of device. BRIEF DESCRIPTION OF DRAWINGS

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

[0017] Figure 1 It is the external structure perspective drawing of the utility model;

[0018] Figure 2 It is the internal sectional structure perspective drawing of the utility model;

[0019] Figure 3It is the heating assembly overall structure perspective view of the utility model;

[0020] Figure 4 It is the filter assembly internal section view structure perspective view of the utility model.

[0021] In the drawing: 1, heat preservation box;2, filter assembly;21, filter box;22, three-way electromagnetic valve;23, air inlet pipe;24, first electromagnetic valve;25, second electromagnetic valve;26, filter screen;27, air pump;3, heating assembly;31, top shell;32, split pipe;33, bottom shell;34, heat conduction plate;35, communication groove;4, water inlet pipe;5, water outlet pipe;6, air outlet pipe. Specific implementation

[0022] It should be noted that in the description of the embodiments of the application, the terms "front, back, left, right, up, down" and the like indicate the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the application and simplify the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the application. The terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection;It can be directly connected, or indirectly connected through an intermediate medium, or the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0023] The application will be further described in detail below by means of the drawings and examples.

[0024] Reference Figures 1 to 4 The embodiments of the application provide a boiler waste heat collection and recycling device, which comprises a heat preservation box 1, the top of the heat preservation box 1 is provided with a filter assembly 2, the inside of the heat preservation box 1 is provided with a heating assembly 3, the heating assembly 3 comprises a top shell 31, the top shell 31 is fixedly installed on the inner top of the heat preservation box 1, the inner bottom of the heat preservation box 1 is fixedly installed with a bottom shell 33, the split pipe 32 is fixedly installed between the bottom shells 33, the split pipe 32 communicates the inside of the top shell 31 and the bottom shell 33, the outside of the bottom shell 33 is fixedly installed with a heat conduction plate 34, and the heat conduction plate 34 is fixedly installed with a communication groove 35.

[0025] The bottom of the heat preservation box 1 is fixedly installed with an air outlet pipe 6, which communicates with the inside of the bottom shell 33.

[0026] The top of the heat preservation box 1 is fixedly provided with a water inlet pipe 4, which is communicated with the inside of the heat preservation box 1, and the bottom of the heat preservation box 1 is fixedly provided with a water outlet pipe 5, which is fixedly provided with a valve at the connection with the heat preservation box 1. The filter assembly 2 comprises a filter box 21, and the top of the filter box 21 is fixedly provided with a three-way electromagnetic valve 22, the right side of the three-way electromagnetic valve 22 is fixedly provided with an air inlet pipe 23, the bottom of the three-way electromagnetic valve 22 is communicated with the inside of the filter box 21, and the bottom of the filter box 21 is fixedly provided with a second electromagnetic valve 25 between the top of the heat preservation box 1.

[0027] In the embodiment, when the heat of the boiler flue gas is recycled, the air inlet pipe 23 is connected with the boiler flue gas pipeline, the flue gas enters the inside of the top shell 31 through the air inlet pipe 23, the filter box 21 and the second electromagnetic valve 25, is divided into multiple strands through the multiple split pipes 32, the heat in the flue gas is transferred to the inside of the heat conduction plate 34 outside through the split pipes 32, and is transferred to the inside of the water in the heat preservation box 1 through the heat conduction plate 34. The contact area of the flue gas and the water heat exchange is greatly increased through the multiple split pipes 32 and the heat conduction plate 34, so that the heat in the flue gas can be quickly transferred to the water, the heated hot water is discharged from the water outlet pipe 5 by opening the valve, and the heated hot water can be used for production process, heating and the like. The cool water is supplemented through the water inlet pipe 4, and the flue gas after heat exchange is discharged to the inside of the next process through the air outlet pipe 6.

[0028] Reference Figures 1 to 4 In one aspect of the embodiment, the bottom of the second electromagnetic valve 25 is communicated with the inside of the top shell 31, the top of the second electromagnetic valve 25 is communicated with the inside of the filter box 21, and the inside of the filter box 21 is fixedly provided with a filter screen 26. The side of the filter box 21 is fixedly provided with a first electromagnetic valve 24, the outside of the first electromagnetic valve 24 is fixedly provided with an air pump 27, and the air outlet of the air pump 27 is communicated with the inside of the filter box 21 through the first electromagnetic valve 24, and the communication position is below the filter screen 26.

[0029] In the embodiment, before the flue gas enters the inside of the split pipe 32, the large particle impurities in the flue gas are preliminarily filtered through the filter screen 26 in the filter box 21, so that the large particle impurities can be prevented from being accumulated in the split pipe 32 to cause pipeline blockage, and when the filter screen 26 needs to be cleaned, the right side opening of the three-way electromagnetic valve 22 is closed by starting, the bottom opening and the top opening are communicated, the second electromagnetic valve 25 is closed, the first electromagnetic valve 24 is opened, and the air pump 27 blows air into the inside of the filter box 21 after being opened. After the gas enters, it passes through the inside of the filter screen 26 from below, blows the impurities on the filter screen 26 down and discharges the impurities through the top opening of the three-way electromagnetic valve 22, so that the purpose of backflushing cleaning of the filter screen 26 is realized, and it is ensured that the filter screen 26 can continuously filter the impurities.

[0030] Meanwhile, the contents not described in detail in the specification all belong to the prior art known by those skilled in the art.

[0031] Working principle: when the boiler flue gas heat is recycled, the inlet pipe 23 is connected with the boiler flue gas pipeline, the flue gas enters the filter box 21 through the inlet pipe 23, in the filter box 21, the flue gas is first filtered by the filter screen 26 to remove large particles, then the second electromagnetic valve 25 is opened, the filtered flue gas enters the inside of the top shell 31 through the second electromagnetic valve 25, in the top shell 31, the flue gas is divided into multiple strands by the multiple split pipes 32, the heat inside the flue gas is transferred to the inside of the heat conduction plate 34 through the split pipes 32, and then transferred to the water inside the heat preservation box 1 through the heat conduction plate 34, heat exchange is realized, the heated hot water is discharged from the water outlet pipe 5 by opening the valve, and is used for production process, heating, etc., while the cold water is supplemented through the water inlet pipe 4, the flue gas after heat exchange is discharged to the next process through the gas outlet pipe 6, when it is necessary to clean the filter screen 26, the three-way electromagnetic valve 22 is started to close the right side port, the bottom port and the top port are communicated, the second electromagnetic valve 25 is closed, the first electromagnetic valve 24 is opened, and the filter box 21 is blown by the air pump 27, the gas passes through the filter screen 26 from below, blows the impurities down and discharges through the top port of the three-way electromagnetic valve 22.

[0032] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0033] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A boiler waste heat collection and reuse device, comprising an insulated box (1), characterized in that: The top of the heat preservation box (1) is provided with a filter assembly (2), and the inside of the heat preservation box (1) is provided with a heating assembly (3). The heating assembly (3) includes a top shell (31), which is fixedly installed on the inner top of the heat preservation box (1). A bottom shell (33) is fixedly installed on the inner bottom of the heat preservation box (1). A split tube (32) is fixedly installed between the bottom shells (33). The split tube (32) connects the top shell (31) and the inside of the bottom shell (33). A heat-conducting plate (34) is fixedly installed between the outer sides of the bottom shells (33). A connecting groove (35) is fixedly installed between the heat-conducting plates (34).

2. The boiler waste heat collection and reuse device according to claim 1, characterized in that: The bottom of the insulated box (1) is fixedly equipped with an air outlet pipe (6), which is connected to the inside of the bottom shell (33).

3. The boiler waste heat collection and reuse device according to claim 1, characterized in that: A water inlet pipe (4) is fixedly installed on the top of the insulation box (1), and the water inlet pipe (4) is connected to the inside of the insulation box (1). A water outlet pipe (5) is fixedly installed on the bottom outside of the insulation box (1), and a valve is fixedly installed at the connection between the water outlet pipe (5) and the insulation box (1).

4. The boiler waste heat collection and reuse device according to claim 1, characterized in that: The filter assembly (2) includes a filter box (21), a three-way solenoid valve (22) is fixedly installed on the top of the filter box (21), an air inlet pipe (23) is fixedly installed on the right side port of the three-way solenoid valve (22), the bottom port of the three-way solenoid valve (22) is connected to the inside of the filter box (21), and a second solenoid valve (25) is fixedly installed between the bottom of the filter box (21) and the top of the insulation box (1).

5. A boiler waste heat collection and reuse device according to claim 4, characterized in that: The bottom of the second solenoid valve (25) is connected to the inside of the top shell (31), and the top of the second solenoid valve (25) is connected to the inside of the filter box (21). A filter screen (26) is fixedly installed inside the filter box (21).

6. A boiler waste heat collection and reuse device according to claim 5, characterized in that: A first solenoid valve (24) is fixedly installed on the side of the filter box (21), and an air pump (27) is fixedly installed on the outside of the first solenoid valve (24). The air outlet of the air pump (27) is connected to the inside of the filter box (21) through the first solenoid valve (24), and the connection point is located below the filter screen (26).

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