Economizer with ash removal function

Abstract

The utility model relates to the technical field of coal economizers, in particular to a coal economizer with an ash removal function. In order to solve the problems that in the process that hot air is blown to fins of an existing economizer, impurities in the air are prone to being attached to the fins and a pipeline, follow-up cleaning is difficult, heating of liquid in the pipeline is affected after a long time, and the heating effect is reduced, the following technical scheme is provided: the economizer comprises an economizer main body; a top cover for guiding gas conveniently is mounted at the top of the economizer body, a filter screen for filtering gas conveniently is mounted in the top cover, and a rotating assembly for cleaning the filter screen conveniently is mounted on the filter screen. According to the utility model, the purpose of filtering the gas is achieved while the gas is utilized, impurities in the gas are prevented from being adhered to the fins and the pipeline to reduce the heating effect, and the filter screen can be cleaned to prevent the filter screen from being blocked to hinder the subsequent filtering work.

Description

Technical Field

[0001] The utility model relates to the technical field of economizers, in particular to an economizer with an ash cleaning function. Background Art

[0002] An economizer is a device used to improve the thermal efficiency of a boiler and is usually installed on the boiler flue gas duct. Its function is to transfer the heat in the flue gas discharged from the boiler to the boiler feed water, reducing the flue gas temperature while increasing the feed water temperature, thereby reducing fuel consumption and improving the thermal efficiency of the boiler. Nowadays, hot gas is usually blown from top to bottom onto the fins and pipes to complete the purpose of heating the liquid in the economizer, thereby increasing the liquid temperature and achieving an energy-saving effect.

[0003] However, during the process of hot gas blowing onto the fins in the existing economizer, impurities in the gas are likely to adhere to the fins and pipes, making subsequent cleaning difficult. Over time, this affects the heating of the liquid inside the pipes and reduces the heating effect. In view of this, we propose an economizer with an ash cleaning function. Summary of the Utility Model

[0004] The purpose of the utility model is to address the problems in the background art and propose an economizer with an ash cleaning function.

[0005] The technical solution of the utility model: An economizer with an ash cleaning function includes an economizer main body. A top cover for guiding gas is installed at the top of the economizer main body. A filter net for filtering gas is installed inside the top cover. A rotating assembly for cleaning the filter net is installed on the filter net. Guiding assemblies for guiding gas to the fins and pipes of the economizer main body are symmetrically installed on the front-facing wall body and the back wall body of the economizer main body. A dust-proof net for preventing ash from entering the bottom of the economizer main body is installed at the bottom of the two guiding assemblies.

[0006] Preferably, a guiding cavity is formed inside the top cover, and the filter net is installed in the guiding cavity.

[0007] Preferably, a first electromagnetic valve is installed on the back wall body of the top cover, and the outlet end of the first electromagnetic valve is communicated with the inside of the guiding cavity.

[0008] Preferably, the rotating assembly includes a rotating shaft. Bearing seats are connected to both the top and bottom ends of the rotating shaft, and the two bearing seats are symmetrically installed on the top wall body and the bottom wall body of the guiding cavity.

[0009] Preferably, a sealing bearing and a spiral fan blade are sleeved on the outer surface of the rotating shaft, and the spiral fan blade is located above the sealing bearing.

[0010] Preferably, vertical thin plates and cleaning brushes are welded on the outer ring surface of the rotating shaft, and the cleaning surface of the cleaning brush is in close contact with the top of the filter net.

[0011] Preferably, the guiding assembly includes a protective plate, and a second solenoid valve is connected to the inlet end of the protective plate, and the inlet end of the second solenoid valve is communicated with the inside of the guiding cavity.

[0012] Preferably, a guiding plate is installed at the opening on the side wall of the protective plate, and the openings on the guiding plate correspond to the positions of the fins and the pipes.

[0013] Compared with the prior art, the utility model has the following beneficial technical effects:

[0014] The utility model filters the gas entering the top cover through the filter net, avoiding impurities adhering to the fins and pipes of the economizer main body, resulting in difficult cleaning problems. At the same time, when the gas enters the guiding cavity in the top cover, the generated pressure blows multiple vertical thin plates to drive the rotating shaft to rotate. The spiral fan blades in the rotating state guide the gas entering the guiding cavity to the filter net for filtering, which is beneficial to accelerating the gas filtering speed, avoiding gas retention in the guiding cavity, and the rotating shaft in the rotating state can drive the cleaning brush to rotate to clean the filter net, avoiding impurities bonding on the filter net, causing blockage and reducing the filtering effect, realizing the utilization of energy. Then, through the arrangement of the guiding assembly, it is beneficial to guide the gas to the fins and pipes to achieve the purpose of heating the liquid in the pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a front view sectional structure schematic diagram of an economizer with an ash cleaning function;

[0016] Figure 2 is Figure 1 the isometric three-dimensional structure schematic diagram of the rotating assembly in

[0017] Figure 3 is Figure 1 the three-dimensional structure schematic diagram of the guiding assembly in

[0018] Reference numerals: 1, economizer main body; 2, top cover; 3, filter net; 4, rotating assembly; 41, rotating shaft; 42, bearing seat; 43, sealed bearing; 44, spiral fan blade; 45, vertical thin plate; 46, cleaning brush; 5, guiding assembly; 51, protective plate; 52, second solenoid valve; 53, guiding plate; 6, dust-proof net. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The following further describes the technical solutions of the present utility model with reference to the drawings and specific embodiments.

[0020] Embodiment

[0021] As Figures 1-3 shown, a economizer with ash cleaning function proposed by the utility model includes an economizer main body 1, a top cover 2 is fixedly installed at the top of the economizer main body 1, a guiding cavity is opened in the top cover 2, a filter net 3 is fixedly installed in the guiding cavity and is located below the inlet pipe, and is used for filtering the gas entering the guiding cavity to avoid the unfiltered gas directly blowing onto the fins and pipes of the economizer main body 1, causing impurities to adhere to the pipes and fins, increasing the cleaning difficulty and affecting subsequent heating at the same time; a first solenoid valve is fixedly installed on the back wall of the top cover 2, its inlet end is communicated with the inside of the guiding cavity and is located above the filter net 3, which is convenient for discharging impurities from the guiding cavity subsequently.

[0022] Furthermore, a rotating assembly 4 for facilitating the cleaning of the filter net 3 is installed on the filter net 3. The rotating assembly 4 includes a rotating shaft 41. A rotating hole is opened on the filter net 3, and the rotating shaft 41 is arranged in the rotating hole. Two bearing seats 42 are symmetrically installed on the top wall and the bottom wall of the guiding cavity. The rotating ends of the two bearing seats 42 are respectively connected to the top end and the bottom end of the rotating shaft 41, which plays a role in limiting the rotating shaft 41 and is beneficial to assisting the rotation of the rotating shaft 41; a spiral fan blade 44 and a sealing bearing 43 are both sleeved on the outer surface of the rotating shaft 41. The sealing bearing 43 is arranged in the rotating hole, and its outer surface is connected to the inner surface of the rotating hole, which plays a role in assisting the rotation of the rotating shaft 41 and seals the rotating hole to prevent gas from directly entering below the filter net 3 without being filtered; the spiral fan blade 44 is located above the filter net 3. The rotating shaft 41 in a rotating state can drive the spiral fan blade 44 to rotate, which is beneficial to accelerating the discharge speed of the gas in the guiding cavity and avoiding it staying in the guiding cavity; a plurality of vertical thin plates 45 and a plurality of cleaning brushes 46 are both fixedly welded on the outer surface of the rotating shaft 41. The outlet of the inlet pipe corresponds to one of the vertical thin plates 45, so that the vertical thin plate 45 can be blown to rotate during the intake process of the guiding cavity, and the rotating shaft 41 drives the cleaning brush 46 and the spiral fan blade 44 to rotate during the rotation of the vertical thin plate 45. The cleaning surface of the cleaning brush 46 is closely attached to the top of the filter net 3. The rotating cleaning brush 46 achieves the purpose of cleaning the filter net 3, avoiding the filter net 3 from adhering to impurities and reducing the filtering effect. The cleaned impurities can be discharged from the guiding cavity through the opened first solenoid valve. Due to the arrangement of the vertical thin plate 45, the pressure generated by the gas entering the guiding cavity is utilized.

[0023] Furthermore, guiding components 5 for facilitating the guiding of gas to the fins and pipes of the economizer main body 1 are symmetrically installed on the front-facing wall body and the back wall body of the economizer main body 1. The guiding component 5 includes a protection plate 51. The side wall of the protection plate 51 is fixedly connected to the side wall of the top cover 2, and the side wall of the protection plate 51 is also fixedly connected to the economizer main body 1. Through the connection between the protection plate 51 and the top cover 2, it is in an N shape, placing the fins and pipes of the economizer main body 1 inside the top cover 2 and the protection plate 51 to play a protective role; the second solenoid valve 52 is fixedly installed at the inlet end of the protection plate 51. The inlet end of the second solenoid valve 52 is communicated with the inside of the guiding cavity and is located below the filter net 3, facilitating the guiding of the filtered gas into the protection plate 51 for subsequent use; the guiding plate 53 is fixedly installed at the opening of the side wall of the protection plate 51. The openings on the guiding plate 53 correspond to the positions of the fins and the pipes, realizing the guiding of the gas to the positions corresponding to the fins and the pipes, thereby improving the heating efficiency; the dust-proof net 6 is fixedly installed at the bottom of the protection plate 51, used to prevent dust from entering the fins and pipes through the bottom of the economizer main body 1, playing a dust-proof role for the economizer main body 1.

[0024] The above specific embodiments are merely several preferred embodiments of the present invention. Based on the technical solution of the present invention and the relevant revelations of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A coal economizer with a ash cleaning function, comprising a coal economizer body (1), characterized in that: A top cover (2) for guiding gas is installed at the top of the economizer body (1), a filter (3) for filtering gas is installed inside the top cover (2), and a rotating component (4) for cleaning the filter (3) is installed on the filter (3). Guide components (5) for guiding gas to the fins and pipes of the economizer body (1) are symmetrically installed on the front wall and the back wall of the economizer body (1), and dustproof nets (6) are installed at the bottom of the two guide components (5) to prevent dust from entering the bottom of the economizer body (1).

2. The economizer with ash cleaning function according to claim 1, characterized in that: A guide cavity is provided in the top cover (2), and the filter screen (3) is installed in the guide cavity.

3. The economizer with ash cleaning function according to claim 1, characterized in that: A first electromagnetic valve is installed on the back wall of the top cover (2), and an outlet end of the first electromagnetic valve is communicated with the interior of the guide cavity.

4. The economizer with ash cleaning function according to claim 1, characterized in that: The rotating assembly (4) comprises a rotating shaft (41), the top and bottom ends of the rotating shaft (41) are both connected to bearing seats (42), and the two bearing seats (42) are symmetrically mounted on the top wall and the bottom wall of the guide cavity.

5. The economizer with ash cleaning function according to claim 4, characterized in that: A sealing bearing (43) and a spiral blade (44) are sleeved on the outer ring surface of the rotating shaft (41), and the spiral blade (44) is located above the sealing bearing (43).

6. The economizer with ash cleaning function according to claim 5, characterized in that: A vertical thin sheet (45) and a cleaning brush (46) are welded on the outer ring surface of the rotating shaft (41), and the cleaning surface of the cleaning brush (46) is in close contact with the top of the filter screen (3).

7. The economizer with ash cleaning function according to claim 1, characterized in that: The guide assembly (5) comprises a protection plate (51), the inlet end of the protection plate (51) is connected to a second solenoid valve (52), and the inlet end of the second solenoid valve (52) is communicated with the interior of the guide cavity.

8. The economizer with ash cleaning function according to claim 7, characterized in that: A guide plate (53) is installed at the opening on the side wall of the protection plate (51), and the opening on the guide plate (53) corresponds to the position of the fin and the pipeline.

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