A cleaning mechanism for a low-pressure waste heat boiler

Abstract

This utility model discloses a cleaning mechanism for a low-pressure waste heat boiler, belonging to the technical field of low-pressure waste heat boilers. It includes a sleeve block that slides onto all heat exchange tubes. The sleeve block is equipped with scrapers capable of scraping away dirt from the heat exchange tubes, and the scrapers cover the heat exchange tubes. A water spray assembly is fixedly installed on the inner wall of the boiler, and the water spray assembly corresponds to the heat exchange tubes. By directly sleeved onto the heat exchange tubes, this application utilizes the sliding of the sleeve block to drive all the scrapers to slide, thereby simultaneously scraping and cleaning all the heat exchange tubes comprehensively. Combined with the water spray assembly, this improves the cleaning effect on the heat exchange tubes.

Description

Technical Field

[0001] This utility model provides a cleaning mechanism for a low-pressure waste heat boiler, belonging to the technical field of low-pressure waste heat boilers. Background Technology

[0002] In industrial production processes, low-pressure waste heat boilers serve as important waste heat recovery equipment. They transfer heat from high-temperature waste gas to the working medium via heat exchanger tube bundles, thereby achieving efficient energy utilization. Their working principle diagram is shown below. Figure 1 As shown in the diagram, the heat exchange tubes, as the core component of heat recovery, are in direct contact with the exhaust gas, thus exchanging heat with it. Therefore, with prolonged use, dust particles and various types of scale easily accumulate on the surface of the heat exchange tubes. These deposits significantly reduce heat transfer efficiency, increase energy consumption, and in severe cases, can even cause boiler blockage, affecting the normal operation of the equipment. Therefore, regular cleaning of the heat exchange tubes is necessary.

[0003] Boilers typically have multiple heat exchange tubes inside. Traditional manual cleaning methods require treating each tube individually, which is not only labor-intensive and inefficient, but also makes it difficult to ensure consistent cleaning results for each tube. Especially in areas with densely packed tubes, cleaning tools struggle to reach deep areas, easily creating cleaning blind spots. Therefore, there is an urgent need to develop a new cleaning mechanism capable of efficiently and comprehensively cleaning multiple heat exchange tubes to improve the overall operating performance of waste heat boilers. Utility Model Content

[0004] The technical problem this invention aims to solve is that traditional manual cleaning methods for heat exchange tubes are inefficient and cleaning tools are difficult to penetrate dense heat exchange tube areas, easily creating cleaning dead zones.

[0005] To solve the above problems, the proposed technical solution is as follows: a cleaning mechanism for a low-pressure waste heat boiler, comprising a base and columns, wherein the base and columns are provided in two corresponding sets, and the columns are fixedly connected to the base; the boiler is fixedly disposed between the two columns, and an inlet pipe and an outlet pipe communicating with the boiler are respectively connected to the two columns; a support plate is fixedly disposed on the inner wall of the boiler, and several horizontally arranged heat exchange tubes are fixedly connected to the support plate; the boiler is a structure composed of two half-shells joined together; and further comprising:

[0006] A sleeve block is slidably fitted onto all the heat exchange tubes. The sleeve block is equipped with a scraper that can scrape off the dirt on the heat exchange tubes, and the scraper covers the heat exchange tubes. A water spray assembly is fixedly installed on the inner wall of the boiler, and the water spray assembly corresponds to the heat exchange tubes.

[0007] As an improvement, the water spray assembly includes a cleaning pipe and nozzles. The cleaning pipe is fixedly installed on the inner wall of the boiler, and several nozzles are evenly connected below the cleaning pipe, with the nozzles corresponding to the heat exchange pipes. An outlet pipe for wastewater discharge is connected to the bottom of the boiler.

[0008] As an improvement, the sleeve is fixedly connected to the support plate by screws, and an operating block is fixedly connected to the sleeve.

[0009] As an improvement, the scraper is fixedly connected to the sleeve block, and the number of scrapers is the same as the number of heat exchange tubes; the scraper is conical, the scraper is tightly fitted to the outer wall of the heat exchange tube, and the scraper slides on the heat exchange tube.

[0010] As an improvement, the support plate is provided with docking holes corresponding to the air inlet pipe and the air outlet pipe, and the sleeve is provided with connecting holes corresponding to the corresponding holes.

[0011] The beneficial effects of this utility model are:

[0012] The sleeve slides onto all the heat exchange tubes. The sleeve is equipped with scrapers that can scrape off the dirt on the heat exchange tubes, and the scrapers cover the heat exchange tubes. By directly sleeved onto the heat exchange tubes, the sliding of the sleeve can drive all the scrapers to slide, thereby simultaneously scraping and cleaning all the heat exchange tubes in an all-round way. Combined with the water spray component, the cleaning effect of the heat exchange tubes can be improved. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structural principle of this utility model.

[0014] Figure 2 This is a perspective view of the present invention.

[0015] Figure 3 This is a diagram of the internal structure of the boiler according to this utility model.

[0016] Figure 4 This is a structural diagram of the water spray assembly of this utility model.

[0017] Figure 5 This is an exploded view of the connection between the sleeve block and the heat exchange tube of this utility model.

[0018] 1. Base; 2. Column; 3. Inlet pipe; 4. Boiler; 5. Outlet pipe; 6. Heat exchanger pipe; 7. Support plate; 8. Sleeve block; 9. Scraper; 10. Cleaning pipe; 11. Nozzle; 12. Half shell; 13. Outlet pipe; 14. Docking hole; 15. Operating block; 16. Connection hole. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] This utility model provides a cleaning mechanism for a low-pressure waste heat boiler: it includes a base 1 and columns 2, each with two corresponding sets, and the columns 2 are fixedly connected to the base 1; the boiler 4 is fixedly installed between the two columns 2, and the two columns 2 are respectively connected to an inlet pipe 3 and an outlet pipe 5 communicating with the boiler 4; a support plate 7 is fixedly installed on the inner wall of the boiler 4, and several horizontally arranged heat exchange tubes 6 are fixedly connected to the support plate 7; the boiler 4 is a structure composed of two half-shells 12 spliced ​​together, which facilitates disassembly and opening of the boiler 4;

[0021] like Figure 3 As shown, the sleeve 8 slides onto all the heat exchange tubes 6. The sleeve 8 is equipped with scrapers 9 that can scrape away dirt from the heat exchange tubes 6, and the scrapers 9 cover the heat exchange tubes 6. The scrapers 9 are fixedly connected to the sleeve 8, and the number of scrapers 9 is the same as the number of heat exchange tubes 6, allowing for simultaneous cleaning of all heat exchange tubes 6. The scrapers 9 are conical, fit tightly against the outer wall of the heat exchange tubes 6, and slide on the heat exchange tubes 6. The sleeve 8 is fixedly connected to the support plate 7 with screws, ensuring the stability of the sleeve 8's position when not in use. An operating block 15 is fixedly connected to the sleeve 8 for convenient operation by staff.

[0022] like Figure 4 As shown, a water spray assembly is fixedly installed on the inner wall of the boiler 4, and the water spray assembly corresponds to the heat exchange tube 6. The water spray assembly includes a cleaning pipe 10 and nozzles 11. The cleaning pipe 10 is fixedly installed on the inner wall of the boiler 4, and several nozzles 11 are evenly connected below the cleaning pipe 10, and the nozzles 11 correspond to the heat exchange tube 6, which can play a role in assisting in cleaning the heat exchange tube 6; an outlet pipe 13 for wastewater discharge is connected to the bottom of the boiler 4.

[0023] like Figure 5 As shown, the support plate 7 has a docking hole 14 corresponding to the air inlet pipe 3 and the air outlet pipe 5, and the sleeve block 8 has a connecting hole 16 corresponding to the corresponding hole; the setting of the docking hole 14 and the connecting hole 16 does not affect the air intake and exhaust during normal operation.

[0024] The principle of this utility model

[0025] When cleaning of heat exchange tube 6 is required, first open half-shell 12, such as... Figure 2 , 3 As shown, this allows workers direct access to the interior of boiler 4. The cleaning pipe 10 is connected to an external water supply system, and water is sprayed onto the heat exchange pipe 6 using nozzle 11; as shown... Figure 3 , 5As shown, remove the screws to disconnect the fixed connection between the sleeve block 8 and the support plate 7; the operator holds the operating block 15 and drives the sleeve block 8 and all the scrapers 9 to slide on the heat exchange tubes 6. When the scrapers 9 slide, they can clean and scrape all the heat exchange tubes 6 at the same time. At the same time, since the scrapers 9 are conical and cover the heat exchange tubes 6, when the scrapers 9 move, they can scrape the entire circumference of the heat exchange tubes 6, avoiding cleaning dead corners. At the same time, there is no need to use additional cleaning tools, avoiding the inconvenience of cleaning tools to reach into the heat exchange tubes 6 due to the dense bundle of heat exchange tubes 6.

[0026] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A cleaning mechanism for a low-pressure waste heat boiler, comprising a base (1) and columns (2), wherein the base (1) and columns (2) are each provided with two corresponding sets, and the columns (2) are fixedly connected to the base (1); a boiler (4) is fixedly disposed between the two columns (2), and an air inlet pipe (3) and an air outlet pipe (5) communicating with the boiler (4) are respectively connected to the two columns (2); a support plate (7) is fixedly disposed on the inner wall of the boiler (4), and a plurality of horizontally arranged heat exchange tubes (6) are fixedly connected to the support plate (7); characterized in that: The boiler (4) is a structure formed by splicing two half-shells (12), and also includes: A sleeve (8) is slidably fitted onto all the heat exchange tubes (6). The sleeve (8) is provided with a scraper (9) that can scrape off the dirt on the heat exchange tubes (6), and the scraper (9) covers the heat exchange tubes (6). A water spray assembly is fixedly installed on the inner wall of the boiler (4), and the water spray assembly corresponds to the heat exchange tubes (6).

2. The cleaning mechanism for a low-pressure waste heat boiler according to claim 1, characterized in that: The water spray assembly includes a cleaning pipe (10) and a nozzle (11). The cleaning pipe (10) is fixedly installed on the inner wall of the boiler (4). Several nozzles (11) are evenly connected below the cleaning pipe (10), and the nozzles (11) correspond to the heat exchange pipe (6). The bottom of the boiler (4) is connected to an outlet pipe (13) for wastewater discharge.

3. The cleaning mechanism for a low-pressure waste heat boiler according to claim 1, characterized in that: The sleeve (8) is fixedly connected to the support plate (7) by screws, and an operating block (15) is fixedly connected to the sleeve (8).

4. The cleaning mechanism for a low-pressure waste heat boiler according to claim 3, characterized in that: The scraper (9) is fixedly connected to the sleeve (8), and the number of scrapers (9) is the same as the number of heat exchange tubes (6); the scraper (9) is conical, the scraper (9) is tightly fitted to the outer wall of the heat exchange tube (6), and the scraper (9) slides on the heat exchange tube (6).

5. The cleaning mechanism for a low-pressure waste heat boiler according to claim 4, characterized in that: The support plate (7) has a docking hole (14) corresponding to the air inlet pipe (3) and the air outlet pipe (5), and the sleeve block (8) has a connecting hole (16) corresponding to the corresponding hole.

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