Direct-fired machine with flue gas recovery function

Abstract

The direct-fired machine comprises a direct-fired machine body, a combustor, a recycling assembly and a drainage assembly, the combustor is arranged on one side of the direct-fired machine body, the recycling assembly comprises a conveying pipe arranged on one side of the direct-fired machine body, a box body assembly is arranged at one end of the conveying pipe, a filtering piece is arranged in the box body assembly, and the filtering piece is arranged on the other side of the direct-fired machine body. A water collecting pipe is arranged at the bottom of the box body assembly and arranged at the air inlet end of the combustor. Through the design of the combustor, the conveying pipe, the box body assembly, the filtering piece, the water collecting pipe and the water draining assembly, the arranged combustor has a smoke recycling function, smoke exhausted by the direct-fired machine is recycled through the conveying pipe in the using process, dust and particulate matter in the smoke are filtered through the filtering piece, and the dust and particulate matter in the smoke are filtered through the water collecting pipe; and then the flue gas is conveyed into the combustor, so that the combustor sucks the air and the flue gas and mixes the air and the flue gas, the concentration of oxygen in the air per cubic meter is reduced, and finally emission of nitric oxide is reduced.

Description

Technical Field

[0001] This utility model relates to the field of direct-fired engine technology, and in particular to a direct-fired engine with flue gas recovery. Background Technology

[0002] A direct-fired engine is a device that uses the heat energy generated by the direct combustion of fuel for heating.

[0003] A burner is installed on one side of the direct-fired engine to generate heat energy through combustion. However, when the burner is working, nitrogen oxides will be produced. The emission of nitrogen oxides poses a serious threat to the environment and human health. Therefore, this solution proposes a direct-fired engine with flue gas recovery to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a direct-fired engine with flue gas recovery to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a direct-fired engine with flue gas recovery, comprising:

[0006] Direct-fired engine;

[0007] A burner, wherein the burner is disposed on one side of the direct-fired engine;

[0008] The recovery assembly includes a conveying pipe disposed on one side of the direct-fired engine, a housing assembly disposed at one end of the conveying pipe, a filter element disposed inside the housing assembly, and a water collection pipe disposed at the bottom of the housing assembly, the water collection pipe being disposed at the air inlet end of the burner.

[0009] A drainage assembly is disposed at the bottom of a water collection pipe and is used for drainage.

[0010] Preferably, the direct-fired engine is provided with a chimney at the top, and the delivery pipe is provided on one side of the chimney.

[0011] Preferably, the middle part of the conveying pipe is fitted with an insulation layer, which is used to prevent heat loss.

[0012] Preferably, a second valve is provided on one side of the conveying pipe, which is used to control the flow of flue gas inside the conveying pipe.

[0013] Preferably, the drainage assembly includes a drain pipe disposed at the bottom of the water collection pipe, and a first valve is disposed in the middle of the drain pipe.

[0014] Preferably, the housing assembly includes a filter box disposed at one end of the conveying pipe, the filter box having a door on its front side, and bolts being provided at the connection between the door and the filter box.

[0015] Preferably, the filter element includes:

[0016] The first filter layer is interwoven and connected inside the filter box;

[0017] A second filter layer is disposed at the bottom of the first filter layer;

[0018] A limiting frame is inserted into the interior of the filter box, and the limiting frame is used to restrict the movement of the first filter layer and the second filter layer.

[0019] The technical effects and advantages of this utility model are as follows:

[0020] This invention, through the design of a burner, conveying pipe, housing assembly, filter element, water collection pipe, and drainage assembly, features a burner with flue gas recovery function. During use, the flue gas discharged from the direct-fired engine is recovered through the conveying pipe, and dust and particulate matter in the flue gas are filtered out through the filter element before being conveyed to the burner. The burner then draws in air and flue gas, mixes the two, reduces the oxygen concentration per cubic meter of air, and ultimately reduces nitrogen oxide emissions. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0022] Figure 2 This is a top view of the structure of this utility model.

[0023] Figure 3 This is a front cross-sectional view of the recycling component of this utility model.

[0024] Figure 4 This is a front cross-sectional view of the filter element of this utility model.

[0025] In the diagram: 1. Direct-fired engine; 101. Chimney; 2. Burner; 3. Delivery pipe; 301. Second valve; 4. Water collection pipe; 5. Drainage assembly; 501. Drainage pipe; 502. First valve; 6. Insulation layer; 7. Housing assembly; 701. Door; 702. Filter box; 703. Bolt; 8. Filter element; 801. Restriction frame; 802. First filter layer; 803. Second filter layer. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] This utility model provides, for example Figure 1-4 The direct-fired engine shown includes:

[0028] Direct-fired engine 1;

[0029] Burner 2 is located on one side of the direct-fired engine 1;

[0030] The recovery component includes a conveying pipe 3 located on one side of the direct-fired engine 1, a housing assembly 7 located at one end of the conveying pipe 3, a filter element 8 located inside the housing assembly 7, and a water collection pipe 4 located at the bottom of the housing assembly 7. The water collection pipe 4 is located at the air inlet end of the burner 2.

[0031] Drainage component 5 is located at the bottom of water collection pipe 4 and is used for drainage.

[0032] It should be noted that the direct-fired engine 1 is a device that uses fuel (such as natural gas, diesel, etc.) as energy and achieves refrigeration and heating functions through an absorption refrigeration cycle. The burner 2 is a low-NOx burner of model G30 / 2-A / ZM-4LN, which has a flue gas recovery function. During use, one end of the water collection pipe 4 is connected to the flue gas recovery pipe on the burner 2. During use, the flue gas is recovered through the recovery component and then sent to the burner 2. The burner 2 then draws in air and flue gas and mixes the two, reducing the oxygen concentration per cubic meter of air and ultimately reducing the emission of nitrogen oxides. The burner 2 draws in air and flue gas, mixes them, reduces the oxygen concentration, weakens the combustion intensity, and reduces the reaction between nitrogen and oxygen at high temperatures, thereby reducing NOx formation.

[0033] Specifically, a chimney 101 is provided on the top of the direct-fired engine 1, and a conveying pipe 3 is provided on one side of the chimney 101. An insulation layer 6 is provided in the middle of the conveying pipe 3 to prevent heat loss. A second valve 301 is provided on one side of the conveying pipe 3 to control the flow of flue gas inside the conveying pipe 3.

[0034] It should be noted that the chimney 101 is located at the top of the direct-fired engine 1, and the flue gas generated inside the direct-fired engine 1 is discharged through the chimney 101. The insulation layer 6 has an annular cross-section and is fitted onto the outer wall of the conveying pipe 3 during use to reduce the dissipation of heat in the flue gas. The second valve 301 can be a ball valve or a solenoid valve, and is used to control the flow of flue gas in the conveying pipe 3 during use.

[0035] Specifically, the drainage component 5 includes a drain pipe 501 located at the bottom of the water collection pipe 4, and a first valve 502 is located in the middle of the drain pipe 501.

[0036] It should be noted that the height of the middle part of the water collection pipe 4 is lower than that of the two ends, so that the water in the middle of the water collection pipe 4 is collected. The drain pipe 501 is located at the bottom of the middle part of the water collection pipe 4. The first valve 502 is a ball valve. When it is necessary to drain the water in the water collection pipe 4, the first valve 502 is opened, so that the water is discharged from the water collection pipe 4 through the drain pipe 501.

[0037] Specifically, the housing assembly 7 includes a filter box 702 disposed at one end of the conveying pipe 3, a door 701 disposed on the front of the filter box 702, and a bolt 703 disposed at the connection between the door 701 and the filter box 702.

[0038] It should be noted that a sealing ring is provided at the connection between the filter box 702 and the door 701 to seal the connection. A bolt 703 is also provided at the connection. When it is necessary to fix the filter box 702 and the door 701, the bolt 703 can be used to fix them. At the same time, when it is necessary to separate the door 701 and the filter box 702, the bolt 703 can be unscrewed.

[0039] Specifically, filter element 8 includes:

[0040] The first filter layer 802 is inserted into the interior of the filter box 702;

[0041] The second filter layer 803 is disposed at the bottom of the first filter layer 802;

[0042] A limiting frame 801 is inserted into the interior of the filter box 702. The limiting frame 801 is used to restrict the movement of the first filter layer 802 and the second filter layer 803.

[0043] It should be noted that the first filter layer 802 and the second filter layer 803 are the primary filter and the advanced filter, respectively. The first filter layer 802 has pores with a diameter of 10 to 15 micrometers to block dust and fly ash, and the second filter layer 803 has pores with a diameter of 2 to 2.5 micrometers to block fine particles in the flue gas. Two limiting frames 801 are provided, both of which are fixedly interlocked inside the filter box 702. The first filter layer 802 and the second filter layer 803 are provided between the two limiting frames 801, and the movement of the two filter layers is restricted by the two limiting frames 801.

[0044] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A direct-fired engine with flue gas recovery, characterized in that, include: Direct-fired engine (1); A burner (2) is disposed on one side of the direct-fired engine (1); The recycling component includes a conveying pipe (3) disposed on one side of the direct-fired engine (1), a housing assembly (7) disposed at one end of the conveying pipe (3), a filter element (8) disposed inside the housing assembly (7), a water collection pipe (4) disposed at the bottom of the housing assembly (7), and the water collection pipe (4) disposed at the air inlet end of the burner (2). A drainage component (5) is disposed at the bottom of the water collection pipe (4) and is used for drainage.

2. A direct-fired engine with flue gas recovery according to claim 1, characterized in that, The top of the direct-fired engine (1) is provided with a chimney (101), and the delivery pipe (3) is provided on one side of the chimney (101).

3. A direct-fired engine with flue gas recovery according to claim 1, characterized in that, The middle part of the conveying pipe (3) is fitted with a heat insulation layer (6), which is used to prevent heat loss.

4. A direct-fired engine with flue gas recovery according to claim 1, characterized in that, A second valve (301) is provided on one side of the conveying pipe (3), and the second valve (301) is used to control the flow of flue gas inside the conveying pipe (3).

5. A direct-fired engine with flue gas recovery according to claim 1, characterized in that, The drainage assembly (5) includes a drain pipe (501) located at the bottom of the water collection pipe (4), and a first valve (502) is provided in the middle of the drain pipe (501).

6. A direct-fired engine with flue gas recovery according to claim 1, characterized in that, The housing assembly (7) includes a filter box (702) disposed at one end of the conveying pipe (3). The filter box (702) has a door (701) on its front side, and a bolt (703) is provided at the connection between the door (701) and the filter box (702).

7. A direct-fired engine with flue gas recovery according to claim 1, characterized in that, The filter element (8) includes: The first filter layer (802) is inserted into the interior of the filter box (702); A second filter layer (803) is disposed at the bottom of the first filter layer (802); A limiting frame (801) is inserted into the interior of the filter box (702) to restrict the movement of the first filter layer (802) and the second filter layer (803).

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