An ash cleaning device for a boiler

Abstract

This utility model discloses an ash and slag cleaning device for boilers, including a boiler body. A collection pipe is fixedly connected to the bottom of the boiler body, and a base is fixedly connected to the lower end of the collection pipe. A filter hole is provided between the bottom of the boiler body and the collection pipe. A feeding screw is rotatably connected inside the collection pipe. A scraper is fixedly connected to the upper end of the feeding screw, and a brush is fixedly connected to the lower side of the scraper. The scraper contacts the bottom of the boiler body, and the brush is located inside the filter hole. A hopper is fixedly connected to the collection pipe outside the feeding screw. A drive motor is fixedly connected to the outside of the base. A rotating shaft is fixedly connected to the output end of the drive motor, and a driving bevel gear is fixedly connected to the other end of the rotating shaft. An extension rod is fixedly connected to the lower end of the feeding screw, and a driven bevel gear is fixedly connected to the extension rod. The driving bevel gear meshes with the driven bevel gear. With the above structure, under the action of the drive motor, the scraper and brush break up and collect the ash and slag, which can prevent the ash and slag from damaging the bevel gear.

Description

Technical Field

[0001] This utility model relates to the field of ash and slag treatment technology, and in particular to an ash and slag cleaning device for boilers. Background Technology

[0002] A boiler is an energy conversion device. The energy input to a boiler includes the chemical energy of fuel and electrical energy. The boiler outputs steam, high-temperature water or organic heat carrier with a certain amount of thermal energy. The boiler body consists of a steam-water system (boiler) and a combustion system (furnace). The steam-water system consists of an economizer, steam drum, downcomer, header, water-cooled walls, superheater, reheater, etc. Its main task is to effectively absorb the heat released by fuel combustion and heat the feedwater entering the boiler to form superheated steam with a certain temperature and pressure.

[0003] Chinese patent application number "CN202321183766.9" is entitled "A Boiler Bottom Ash and Slag Cleaning Device." It includes: a boiler body with an exhaust pipe fixedly connected to its top; a filter plate fixedly installed inside the boiler body; a rotating shaft rotatably mounted in the middle of the filter plate; a scraper fixedly mounted on the outer wall of the rotating shaft, the scraper contacting the filter plate; a drive assembly for driving the rotating shaft to rotate inside the boiler body; and a collection box installed at the bottom of the boiler body. This device, by starting a drive motor, drives the rotating shaft and a first bevel gear to rotate. The first bevel gear meshes with a second bevel gear, driving the rotating shaft and scraper to rotate, thereby breaking up the slag falling on the filter plate, allowing it to pass through. Simultaneously, the scraper cleans the filter plate, preventing clogging. However, the following problems still exist in actual use:

[0004] 1. The drive assembly is located above the ash filter plate. During cleaning, the ash will pass through the drive assembly first. Over time, this will easily lead to wear at the connection between the first bevel gear and the second bevel gear, increasing maintenance costs.

[0005] 2. During use, simply using a scraper to break up and clean the ash and slag results in poor cleaning effectiveness. Utility Model Content

[0006] The purpose of this invention is to provide an ash and slag cleaning device for boilers, which solves the problems mentioned above.

[0007] To achieve the above objectives, an ash and slag cleaning device for boilers is provided, comprising a boiler body, a collection pipe fixedly connected to the bottom of the boiler body, and a base fixedly connected to the lower end of the collection pipe; a filter hole is provided between the bottom of the boiler body and the collection pipe, a feeding screw is rotatably connected inside the collection pipe, a scraper is fixedly connected to the upper end of the feeding screw, a brush is fixedly connected to the lower side of the scraper, the scraper contacts the bottom of the boiler body, the brush is located inside the filter hole, a hopper is fixedly connected to the collection pipe located outside the feeding screw, a drive motor is fixedly connected to the outside of the base, a rotating shaft is fixedly connected to the output end of the drive motor, a driving bevel gear is fixedly connected to the other end of the rotating shaft, an extension rod is fixedly connected to the lower end of the feeding screw, a driven bevel gear is fixedly connected to the extension rod, and the driving bevel gear meshes with the driven bevel gear.

[0008] According to the aforementioned ash and slag cleaning device for boilers, a cleaning door is hinged to the outside of the collection pipe.

[0009] According to the aforementioned ash and slag cleaning device for boilers, the bottom of the hopper is provided with a through hole, the feeding screw passes through the through hole, and its lower end is rotatably connected to the base.

[0010] According to the aforementioned ash and slag cleaning device for boilers, a dustproof rubber ring is provided at the connection between the feeding screw and the base.

[0011] According to the aforementioned ash and slag cleaning device for boilers, the diameter of the through hole is smaller than the diameter of the filter hole.

[0012] According to the aforementioned ash and slag cleaning device for a boiler, an exhaust pipe is fixedly connected to the top of the boiler body.

[0013] According to the aforementioned ash and slag cleaning device for boilers, a support plate is rotatably connected to the outer side of the rotating shaft, and the support plate is fixedly connected inside the base.

[0014] According to the aforementioned ash and slag cleaning device for boilers, a rubber pad is fixedly connected to the bottom of the base.

[0015] This utility model has the following beneficial effects:

[0016] 1. Compared with the existing technology, by setting a rotating shaft and bevel gear in the base, the active bevel gear and the driven bevel gear drive the feeding screw to rotate under the action of the drive motor, so that the scraper and brush break up and collect the ash and slag, which can avoid the ash and slag from damaging the bevel gear.

[0017] 2. Compared with the existing technology, by setting a hopper inside the cleaning pipe, and with the feeding screw passing through the hopper and the through hole, the ash and slag can be squeezed and crushed again during the cleaning process with the cooperation of the feeding screw and the through hole, making it easier to collect. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0019] Figure 1 This is a structural diagram of an ash and slag cleaning device for boilers according to the present invention;

[0020] Figure 2 This is a cross-sectional view of an ash and slag cleaning device for boilers according to the present invention;

[0021] Figure 3 for Figure 2 Enlarged view of the structure at point A in the middle;

[0022] Figure 4 This is a structural diagram of the hopper and scraper of an ash and slag cleaning device for boilers according to this utility model.

[0023] Legend:

[0024] 1. Boiler body; 2. Collection pipe; 3. Base; 4. Drive motor; 41. Rotating shaft; 42. Drive bevel gear; 5. Feeding screw; 51. Extension rod; 52. Driven bevel gear; 6. Discharge hopper; 61. Through hole; 7. Scraper; 71. Brush; 8. Support plate; 9. Filter hole; 10. Cleaning door; 11. Exhaust pipe; 12. Dustproof rubber ring. Detailed Implementation

[0025] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0026] Reference Figure 1-4 This utility model provides an ash and slag cleaning device for boilers, which includes a boiler body 1. The internal structure of the boiler body 1 is the same as that in the prior art, so it will not be described in this patent. An exhaust pipe 11 is fixedly connected to the top of the boiler body 1, and a collection pipe 2 is fixedly connected to the bottom of the boiler body 1. A cleaning door 10 is hinged to the outside of the collection pipe 2. The cleaning door 10 facilitates the cleaning of ash and slag. A base 3 is fixedly connected to the lower end of the collection pipe 2. A rubber pad is fixedly connected to the bottom of the base 3. Under the action of the rubber pad, the friction between the base 3 and the ground is increased.

[0027] A filter hole 9 is provided between the bottom of the boiler body 1 and the collection pipe 2. There are several filter holes 9, which are arranged in a ring. A feeding screw 5 is rotatably connected inside the collection pipe 2. A dustproof rubber ring 12 is provided at the connection between the feeding screw 5 and the base 3. Under the action of the dustproof rubber ring 12, ash and slag are prevented from entering the base 3. A scraper 7 is fixedly connected to the upper end of the feeding screw 5. A brush 71 is fixedly connected to the lower side of the scraper 7. The scraper 7 is in contact with the bottom of the boiler body 1. The brush 71 is located inside the filter hole 9. Under the action of the scraper 7 and the brush 71, the scraper 7 and the brush 71 are broken up by the drive motor 4 to prevent blockage.

[0028] A hopper 6 is fixedly connected inside the collection pipe 2 located outside the feeding screw 5. The bottom of the hopper 6 is provided with a through hole 61. The feeding screw 5 passes through the through hole 61 and its lower end is rotatably connected to the base 3. The diameter of the through hole 61 is smaller than the diameter of the filter hole 9. With the cooperation of the feeding screw 5 and the through hole 61, the ash and slag are squeezed and crushed again for easy collection. A drive motor 4 is fixedly connected to the outside of the base 3. A rotating shaft 41 is fixedly connected to the output end of the drive motor 4. A support plate 8 is rotatably connected to the outside of the rotating shaft 41. The support plate 8 is fixedly connected inside the base 3. A drive bevel gear 42 is fixedly connected to the other end of the rotating shaft 41. An extension rod 51 is fixedly connected to the lower end of the feeding screw 5. A driven bevel gear 52 is fixedly connected to the extension rod 51. The drive bevel gear 42 meshes with the driven bevel gear 52.

[0029] Working principle: During operation, the drive motor 4 is started, which drives the rotating shaft 41 to rotate. This, in turn, drives the feeding screw 5 to rotate through the active bevel gear 42 and the driven bevel gear 52. This causes the scraper 7 and brush 71 to break up the ash and slag, preventing blockage and allowing it to fall into the hopper 6. At the same time, the hopper 6 guides the ash and slag to the through hole 61. Then, under the action of the feeding screw 5, the ash and slag are collected into the collection pipe 2. With the cooperation of the feeding screw 5 and the through hole 61, the ash and slag are crushed again for easy collection.

[0030] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A slag cleaning device for a boiler, characterized in that It includes a boiler body (1), a collection pipe (2) is fixedly connected to the bottom of the boiler body (1), and a base (3) is fixedly connected to the lower end of the collection pipe (2); A filter hole (9) is provided between the bottom of the boiler body (1) and the collection pipe (2). A feeding screw (5) is rotatably connected inside the collection pipe (2). A scraper (7) is fixedly connected to the upper end of the feeding screw (5). A brush (71) is fixedly connected to the lower side of the scraper (7). The scraper (7) contacts the bottom of the boiler body (1). The brush (71) is located inside the filter hole (9). A hopper (6) is fixedly connected inside the collection pipe (2) outside the feeding screw (5). A drive motor (4) is fixedly connected to the outside of the base (3). A rotating shaft (41) is fixedly connected to the output end of the drive motor (4). A drive bevel gear (42) is fixedly connected to the other end of the rotating shaft (41). An extension rod (51) is fixedly connected to the lower end of the feeding screw (5). A driven bevel gear (52) is fixedly connected to the extension rod (51). The drive bevel gear (42) meshes with the driven bevel gear (52).

2. A soot cleaning device for a boiler according to claim 1, characterized in that A cleaning door (10) is hinged to the outside of the collection pipe (2).

3. A sootblowing device for a boiler according to claim 2, characterized in that The bottom of the hopper (6) is provided with a through hole (61), the feeding screw (5) passes through the through hole (61), and its lower end is rotatably connected to the base (3).

4. A sootblowing device for a boiler according to claim 3, characterized in that A dustproof rubber ring (12) is provided at the connection between the feeding screw (5) and the base (3).

5. A sootblowing device for a boiler according to claim 4, characterized in that The diameter of the through hole (61) is smaller than the diameter of the filter hole (9).

6. The ash and slag cleaning device for a boiler according to claim 5, characterized in that, An exhaust pipe (11) is fixedly connected to the top of the boiler body (1).

7. The ash and slag cleaning device for a boiler according to claim 6, characterized in that, The outer side of the rotating shaft (41) is rotatably connected to a support plate (8), which is fixedly connected inside the base (3).

8. The ash and slag cleaning device for a boiler according to claim 7, characterized in that, A rubber pad is fixedly connected to the bottom of the base (3).

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