Boiler air inlet pipeline with impurity filtering function

Abstract

The utility model discloses a boiler air inlet pipeline with an impurity filtering function. The boiler air inlet pipeline comprises two pipeline bodies which are arranged in parallel. Filtering modules are arranged on the two pipeline bodies; a first reversing valve is arranged between the head ends of the two pipeline bodies, and a second reversing valve is arranged between the tail ends of the two pipeline bodies; the first reversing valve and the second reversing valve are two-position three-way reversing valves; the filter module comprises a filter shell and a filter screen, the filter screen is arranged in the filter shell, and a plurality of filter holes are formed in the filter screen. The boiler air inlet pipeline does not need to be shut down when the filter module is maintained, so that the boiler is always kept in a working state, and working benefits can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a boiler air inlet pipeline, concretely relates to a boiler air inlet pipeline with impurity filtering function. BACKGROUND

[0002] The condensing boiler utilizes high-efficiency full premix combustion technology, effectively improves the combustion efficiency of natural gas, can not only sufficiently absorb the sensible heat of flue gas but also utilize the condensation heat release of water vapor generated during natural gas combustion, greatly improves the conversion efficiency of natural gas energy in heat utilization equipment, and saves energy.

[0003] The boiler is an energy converter, and the boiler is divided into two parts of "pot" and "furnace". The "pot" is a pressure part containing water and steam, and is used for heating, vaporization and vapor-liquid separation of water. The "furnace" is a place for fuel combustion or other heat release, which has a combustion device, a combustion chamber furnace and a heat release flue, etc. The boiler is mainly divided into a domestic boiler and an industrial boiler. The air inlet pipeline is one of the essential pipe fittings in the industrial boiler. In order to improve the cleanliness of the air inlet, a filter module is installed in the existing air inlet pipeline. Although the air can be filtered, the following problems still exist:

[0004] After a long time of use, the filter module will inevitably be filled with a large amount of impurities, and the purification function will decrease. Therefore, it is necessary to replace the filter module or disassemble the filter module for cleaning, that is, the machine needs to be stopped for maintenance, and the work efficiency needs to be improved. CONTENT OF THE UTILITY MODEL

[0005] The utility model aims at overcoming the above-mentioned problems, and provides a boiler air inlet pipeline with impurity filtering function. The boiler air inlet pipeline does not need to be stopped for maintenance of the filter module, so that the boiler can always maintain a working state, and the work efficiency can be improved.

[0006] The utility model achieves the above-mentioned purpose through the following technical scheme:

[0007] A boiler air inlet pipeline with impurity filtering function comprises two pipeline bodies arranged side by side, and filter modules are arranged on the two pipeline bodies.

[0008] A first reversing valve is arranged between the first ends of the two pipeline bodies, and a second reversing valve is arranged between the ends of the two pipeline bodies.

[0009] The working principle of the above-mentioned boiler air inlet pipeline with impurity filtering function is as follows:

[0010] In work, the first reversing valve is used to connect the first end of one of the pipeline bodies with the air inlet, the second reversing valve is used to connect the last end of the pipeline body with the air outlet, air flows from the pipeline body to the boiler, and the filter module purifies the air and removes impurities; at this time, the other pipeline body and its filter module are in standby state.

[0011] In one preferred embodiment of the present application, the first reversing valve and the second reversing valve are both two-position three-way reversing valves.

[0012] In one preferred embodiment of the present application, the filter module comprises a filter shell and a filter screen, the filter screen is arranged in the filter shell, and a plurality of filter holes are arranged on the filter screen.

[0013] Further, the filter screen comprises an outer filter screen and an inner filter screen, and the inner filter screen is arranged in the outer filter screen; in this way, the dual filtration effect can be achieved, and the cleanliness of the filtered air can be improved.

[0014] Further, the size of the filter holes of the outer filter screen is smaller than that of the filter holes of the inner filter screen; in this way, large-particle impurities can be filtered out by the outer filter screen first, and small-particle impurities can be filtered out by the inner filter screen, and the filtration rate can be improved.

[0015] Further, the number of the filter holes of the outer filter screen is greater than that of the filter holes of the inner filter screen; in this way, more passages are provided, and even if the size of the filter holes of the outer filter screen is small, the air passing speed of the outer filter screen can be the same as that of the inner filter screen, and the air flow speed will not be additionally blocked.

[0016] Further, the inner filter screen is connected with the filter shell through a bolt connection structure, and can be disassembled, cleaned or replaced in later period.

[0017] Further, the outer filter screen is connected with the filter shell through a bolt connection structure.

[0018] In one preferred embodiment of the present application, the filter module is connected with the pipeline body through a bolt connection structure.

[0019] Compared with the prior art, the present application has the following beneficial effects:

[0020] The boiler air inlet pipeline of the utility model can maintain the working state of the boiler and improve the work efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a front view of the boiler air inlet pipeline with the impurity filtering function of the utility model.

[0022] Figure 2 It is a sectional view of the boiler air inlet pipeline with the impurity filtering function of the utility model.

[0023] Figure 3 It is an enlarged view of X in Figure 2 DETAILED DESCRIPTION

[0024] In order to make the skilled in the art well understand the technical scheme of the utility model, the utility model is further described below in combination with the embodiments and the drawings, but the embodiment of the utility model is not limited to this.

[0025] Referring to Figures 1-2 The boiler air inlet pipeline with the impurity filtering function of the embodiment comprises two pipeline bodies 1 arranged side by side, a filter module is arranged on each of the two pipeline bodies 1, a first reversing valve 2 is arranged between the first ends of the two pipeline bodies 1, and a second reversing valve 3 is arranged between the last ends of the two pipeline bodies 1.

[0026] Specifically, the first reversing valve 2 and the second reversing valve 3 are both two-position three-way reversing valves.

[0027] Referring to Figures 1-3 The filter module comprises a filter shell 4 and a filter screen, the filter screen is arranged in the filter shell 4, and a plurality of filter holes are arranged on the filter screen.

[0028] Further, the filter screen comprises an outer filter screen 5 and an inner filter screen 6, and the inner filter screen 6 is arranged in the outer filter screen 5. In this way, the dual filtering effect can be achieved, and the cleanliness of the filtered air can be improved.

[0029] Further, the size of the filter holes of the outer filter screen 5 is smaller than the size of the filter holes of the inner filter screen 6, so that the large-particle impurities can be filtered out by the outer filter screen 5 first, and then the small-particle impurities can be filtered out by the inner filter screen 6, thereby improving the filtering rate.

[0030] ​Further, the number of filter holes of the outer filter screen 5 is greater than that of the inner filter screen 6, so as to provide more passages, and the air passing speed of the outer filter screen 5 is the same as that of the inner filter screen 6, and the air flow speed is not additionally blocked even if the size of the filter hole of the outer filter screen 5 is small.

[0031] Further, the inner filter screen 6 is connected with the filter shell 4 through a bolt connection structure, and can be disassembled, cleaned or replaced later.

[0032] Further, the outer filter screen 5 is connected with the filter shell 4 through a bolt connection structure.

[0033] Further, the filter module is connected with the pipeline body 1 through a bolt connection structure.

[0034] Referring to Figures 1-3 The working principle of the boiler air inlet pipeline with the impurity filtering function in the embodiment is as follows:

[0035] During work, the first end of one of the pipeline bodies 1 is connected with the air inlet through the first reversing valve 2, and the last end of the pipeline body 1 is connected with the air outlet through the second reversing valve 3, so that air flows from the pipeline body 1 to the boiler, and the air is purified by the filter module to remove impurities; at this time, the other pipeline body 1 and the filter module are in standby state. When the filter module of the pipeline body 1 needs to be maintained, the first end of the other pipeline body 1 is connected with the air inlet through the first reversing valve 2, and the last end of the pipeline body 1 is connected with the air outlet through the second reversing valve 3, so that the other pipeline body 1 and the filter module are responsible for the air inlet work, and seamless switching is realized. At this time, the filter module of the original working pipeline body 1 is offline, so that the filter module can be maintained without stopping, and the boiler can keep working, so that the work efficiency can be improved.

[0036] The above is the preferred embodiment of the present application, but the embodiment of the present application is not limited by the above content, and any change, modification, replacement, combination and simplification made without departing from the spirit and principle of the present application should be equivalent replacement, and all are included in the protection scope of the present application.

Claims

1. A boiler intake duct having a function of filtering impurities, characterized by comprising: The pipeline body comprises two pipeline bodies arranged side by side; the two pipeline bodies are each provided with a filter module; A first reversing valve is arranged between the first ends of the two pipeline bodies, and a second reversing valve is arranged between the ends of the two pipeline bodies.

2. The boiler intake duct having a function of filtering impurities according to claim 1, wherein The first reversing valve and the second reversing valve are both two-position three-way reversing valves.

3. The boiler intake duct with a function of filtering impurities according to claim 1, characterized in that, The filter module comprises a filter shell and a filter screen, and the filter screen is arranged in the filter shell and is provided with a plurality of filter holes.

4. The boiler intake duct having a function of filtering impurities according to claim 3, wherein The filter screen comprises an outer filter screen and an inner filter screen, and the inner filter screen is located in the outer filter screen.

5. The boiler intake duct having a function of filtering impurities according to claim 4, wherein The size of the filter holes of the outer filter screen is smaller than the size of the filter holes of the inner filter screen.

6. The boiler intake duct with a function of filtering impurities according to claim 5, characterized in that, The number of the filter holes of the outer filter screen is greater than the number of the filter holes of the inner filter screen.

7. The boiler intake duct with a function of filtering impurities according to claim 4, characterized in that, The inner filter screen is connected with the filter shell through a bolt connection structure.

8. The boiler intake duct with a function of filtering impurities according to claim 4, characterized in that, The outer filter screen is connected with the filter shell through a bolt connection structure.

9. The boiler intake duct with a function of filtering impurities according to claim 1, characterized in that, The filter module and the pipeline body are detachably connected through a bolt connection structure.

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