A device for removing scale from the inner wall of a thermal boiler

Abstract

The utility model relates to a boiler maintenance and cleaning technical field especially relates to a heat -power boiler inner wall scale removal device, including sleeve, push rod, mounting bracket, motor and transmission shaft, push rod is connected with the inside slide of sleeve, sleeve right -hand member fixedly connected with mounting bracket, the inside right part fixedly connected with motor of mounting bracket, the output shaft fixedly connected with transmission shaft in motor left side. The utility model discloses through setting sleeve and the sliding connection cooperation of push rod, and utilize the fixed of dowel pin and screw hole, realized the flexible adjustment and reliable locking of device operation length, can adapt to the boiler internal space of different depth, ensure that the scale removal head can reach the specified position accurately, pass through the transmission shaft and the rotation axis design again and slide and connect the structure of the prismatic shape, can effectively transmit the rotary torque of motor output, drive scale removal head high -speed rotation, can allow push rod axial sliding in sleeve to adjust length, realized the compatible of power transmission and length adjustment function.

Description

Technical Field

[0001] This utility model relates to the field of boiler maintenance and cleaning technology, and in particular to a descaling device for the inner wall of a thermal boiler. Background Technology

[0002] Thermal boilers are key equipment in industrial production and centralized heating systems. Their working principle involves heating water with the heat generated from fuel combustion to produce steam or hot water. During long-term boiler operation, the feedwater inevitably contains hardness ions such as calcium and magnesium. These ions precipitate and deposit on the inner wall of the boiler's heating surface upon heating, forming a dense and hard scale layer. Scale has extremely poor thermal conductivity, only 1 / 30 to 1 / 50 that of steel. When scale accumulates to a certain thickness on the boiler's inner wall, it severely hinders heat transfer from the high-temperature flue gas to the boiler water, leading to a significant decrease in boiler thermal efficiency. To achieve the same steam or heat production requirements, more fuel must be consumed, resulting in energy waste.

[0003] Currently, boiler descaling mainly employs physical removal, which refers to manual chipping or the use of simple mechanical tools. However, this method is extremely labor-intensive, inefficient, and difficult to reach deep inside the boiler, resulting in high labor intensity and incomplete cleaning.

[0004] Therefore, it is necessary to design a descaling device for the inner wall of a thermal boiler to solve the above problems. Utility Model Content

[0005] To overcome the shortcomings of low descaling efficiency and difficulty in reaching deep parts of the boiler, this utility model provides a descaling device for the inner wall of a thermal boiler.

[0006] The technical solution of this utility model is as follows: a descaling device for the inner wall of a thermal boiler, comprising a sleeve, a push rod, a mounting bracket, a motor, a transmission shaft, a rotating shaft, a descaling head, a scraper seat, and scraper components. The push rod is slidably connected to the inner side of the sleeve, and the mounting bracket is fixedly connected to the right end of the sleeve. The motor is fixedly connected to the right side of the inner side of the mounting bracket, and the transmission shaft is fixedly connected to the output shaft on the left side of the motor. The rotating shaft is rotatably connected inside the push rod, and the inner side of the rotating shaft is slidably connected to the transmission shaft. Both the inner sides of the transmission shaft and the rotating shaft are prismatic. The descaling head is fixedly connected to the left end of the rotating shaft, and multiple scraper seats are circumferentially connected to the descaling head. Each scraper seat has a scraper component fixedly connected to its inner side.

[0007] As an improvement to the above solution, it also includes a locating pin, multiple threaded holes on the upper part of the push rod, a threaded hole on the top of the sleeve, and a locating pin is threadedly connected between the threaded hole on the sleeve and a threaded hole on the push rod.

[0008] As an improvement to the above solution, it also includes a handle, with a handle fixedly connected to the right side of the top of the sleeve.

[0009] As an improvement to the above solution, it also includes fasteners, with two fasteners fixedly connected to the front side of the sleeve.

[0010] As an improvement to the above solution, it also includes a water supply pipe, a water receiving pipe, a spray ring, and a telescopic hose. The water supply pipe is fixedly connected between the two fixing parts, the water receiving pipe is provided at the right end of the water supply pipe, the spray ring is sleeved on the left side of the push rod, and the telescopic hose is fixedly connected between the spray ring and the left end of the water supply pipe.

[0011] As an improvement to the above solution, it also includes a nozzle and a pump body. Multiple nozzles are arranged around the spray ring, and all nozzles are tilted at 30° toward the scraper. The pump body is fixedly connected to the left side of the water supply pipe, and the pump body is fixedly connected to the sleeve.

[0012] The beneficial effects are: 1. By setting a sliding connection between the sleeve and the push rod, and using the positioning pin and threaded hole for fixation, the working length of the device can be flexibly adjusted and reliably locked. It can adapt to the internal space of the boiler at different depths, ensuring that the descaling head can accurately reach the designated position. Furthermore, by designing the transmission shaft and the rotating shaft as a prismatic sliding connection structure, it can effectively transmit the rotational torque output by the motor to drive the descaling head to rotate at high speed, and also allow the push rod to slide axially in the sleeve to adjust the length, thus achieving compatibility between power transmission and length adjustment functions.

[0013] 2. This utility model uses multiple scraper seats and scraper components around the descaling head to directly scrape the scale on the inner wall of the boiler by high-speed rotating scraper components. The removal method is direct and effective and can handle scale of various hardness. In addition, through the cooperation of water supply pipe, telescopic hose, spray ring and nozzle, and equipped with an independent pump body, high-pressure water flushing can be carried out simultaneously during the descaling process. The inclined nozzle can effectively flush away the stripped debris and moisten the scale, prevent blockage and assist in the removal. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0015] Figure 2 This is a three-dimensional sectional view of the components of this utility model, including the motor, transmission shaft, and rotating shaft.

[0016] Figure 3 This is a three-dimensional structural diagram of the descaling head, scraper seat, and scraper components of this utility model.

[0017] Figure 4 This is a three-dimensional structural diagram of the telescopic hose, spray ring, and nozzle components of this utility model.

[0018] The labels in the diagram are as follows: 1-Sleeve, 2-Push rod, 3-Mounting bracket, 4-Motor, 5-Drive shaft, 6-Rotating shaft, 7-Threaded hole, 8-Positioning pin, 9-Handle, 10-Descaling head, 11-Scraper seat, 12-Scraper piece, 13-Fixing piece, 14-Water supply pipe, 15-Water inlet pipe, 16-Telescopic hose, 17-Spray ring, 18-Spray head, 19-Pump body. Detailed Implementation

[0019] Example: A descaling device for the inner wall of a thermal boiler, such as Figure 1 , Figure 2 and Figure 3 As shown, the device includes a sleeve 1, a push rod 2, a mounting bracket 3, a motor 4, a drive shaft 5, a rotating shaft 6, a descaling head 10, a scraper seat 11, and a scraper component 12. The push rod 2 is slidably connected to the inside of the sleeve 1. The mounting bracket 3 is welded to the right end of the sleeve 1. The motor 4 is fixedly connected to the right side of the inner side of the mounting bracket 3 by bolts. The output shaft on the left side of the motor 4 is fixedly connected to the drive shaft 5. The rotating shaft 6 is rotatably connected inside the push rod 2. The inner side of the rotating shaft 6 is slidably connected to the drive shaft 5. Both the drive shaft 5 and the inner side of the rotating shaft 6 are prismatic. The descaling head 10 is fixedly connected to the left end of the rotating shaft 6. Multiple scraper seats 11 are connected in a ring around the descaling head 10. Each scraper seat 11 is fixedly connected to a scraper component 12 by screws. The scraper component 12 is replaceable.

[0020] like Figure 2 As shown, it also includes a positioning pin 8, multiple threaded holes 7 are opened on the upper part of the push rod 2, and a threaded hole 7 is also opened on the top of the sleeve 1. The positioning pin 8 is threadedly connected between the threaded hole 7 on the sleeve 1 and a threaded hole 7 on the push rod 2.

[0021] like Figure 1 and Figure 2 As shown, it also includes a handle 9, which is fixedly connected to the top right side of the sleeve 1 by bolts.

[0022] like Figure 1 As shown, it also includes a fastener 13, and two fasteners 13 are fixedly connected to the front side of the sleeve 1.

[0023] like Figure 1 and Figure 4 As shown, it also includes a water supply pipe 14, a water receiving pipe 15, a spray ring 17 and a telescopic hose 16. The water supply pipe 14 is fixedly connected between the two fixing parts 13. The water receiving pipe 15 is provided at the right end of the water supply pipe 14. The spray ring 17 is sleeved on the left side of the push rod 2. The telescopic hose 16 is fixedly connected between the spray ring 17 and the left end of the water supply pipe 14.

[0024] like Figure 4As shown, it also includes a nozzle 18 and a pump body 19. Multiple nozzles 18 are arranged around the spray ring 17, and the multiple nozzles 18 are all tilted at 30° toward the scraper 12. The pump body 19 is fixedly connected to the left side of the water pipe 14, and the pump body 19 is fixedly connected to the sleeve 1.

[0025] When this device is needed to descale the inner wall of a thermal boiler, first connect the water pipe 15 to an external water source. According to the depth of the area to be cleaned inside the boiler, adjust the extension length of the push rod 2 relative to the sleeve 1. Push or pull the push rod 2 into the sleeve 1 until the desired position is reached. Then screw the positioning pin 8 into the threaded hole 7 at the top of the sleeve 1 and simultaneously screw it into the corresponding threaded hole 7 on the push rod 2, thereby firmly fixing the push rod 2 inside the sleeve 1 and ensuring that the length will not change unexpectedly during the operation.

[0026] The operator holds the handle 9 at the top of the sleeve 1 and slowly inserts the descaling head 10 at the front end of the device into the boiler inspection port or flue pipe port. The motor 4 is started, and the output shaft of the motor 4 drives the transmission shaft 5 to start rotating. Since the inner side of the transmission shaft 5 and the rotating shaft 6 inside the push rod 2 are both prismatic, the rotational power of the transmission shaft 5 is reliably transmitted to the rotating shaft 6, which in turn drives the descaling head 10 fixed at its left end to rotate at high speed. As the descaling head 10 rotates at high speed, the scraper pieces 12 fixed on the multiple scraper seats 11 around the descaling head 10 also rotate. The blades of the scraper pieces 12 are close to the inner wall of the boiler, and their sharp edges are used to powerfully scrape off the attached scale, peeling the hard scale off the metal wall surface.

[0027] While scraping, the pump body 19 on the water supply pipe 14 is started. The pump body 19 draws water from the water source and pressurizes it. The water flows through the water supply pipe 14 and the telescopic hose 16 into the spray ring 17. The spray ring 17 is sleeved on the left side of the push rod 2, and multiple nozzles 18 are distributed in a ring on it. Pressurized water is sprayed out from the nozzles 18. All nozzles 18 are tilted at a 30° angle and are directed at the high-speed rotating scraper 12. They wash away the scale and debris that are peeled off by the scraper 12 in time, preventing the debris from accumulating and clogging the scraper 12 or affecting the scraping effect. At the same time, they moisten the scale, making it easier to scrape off.

[0028] The operator can stably control the device through handle 9, and can also adjust the position of push rod 2 to control the position of descaling head 10 while keeping it rotating to continuously and evenly scrape and clean the inner wall of the boiler. The telescopic hose 16 ensures that the water circuit remains connected during the adjustment of push rod 2. After the descaling of the designated area is completed, the motor 4 and pump body 19 are turned off, and the device is slowly pulled out of the boiler for cleaning.

Claims

1. A descaling device for the inner wall of a thermal boiler, characterized in that, It includes a sleeve (1), a push rod (2), a mounting bracket (3), a motor (4), a transmission shaft (5), a rotating shaft (6), a descaling head (10), a scraper seat (11), and a scraper piece (12). The push rod (2) is slidably connected to the inside of the sleeve (1). The mounting bracket (3) is fixedly connected to the right end of the sleeve (1). The motor (4) is fixedly connected to the right side of the inner side of the mounting bracket (3). The transmission shaft (5) is fixedly connected to the output shaft on the left side of the motor (4). The rotating shaft (6) is rotatably connected inside the push rod (2). The inner side of the rotating shaft (6) is slidably connected to the transmission shaft (5). Both the inner sides of the transmission shaft (5) and the inner side of the rotating shaft (6) are prismatic. The descaling head (10) is fixedly connected to the left end of the rotating shaft (6). Multiple scraper seats (11) are connected in a ring around the descaling head (10). Each scraper seat (11) is fixedly connected to the inner side of a scraper piece (12).

2. The descaling device for the inner wall of a thermal boiler as described in claim 1, characterized in that, It also includes a positioning pin (8), multiple threaded holes (7) are opened on the upper part of the push rod (2), and a threaded hole (7) is also opened on the top of the sleeve (1). The threaded hole (7) on the sleeve (1) and a threaded hole (7) on the push rod (2) are threadedly connected by a positioning pin (8).

3. The descaling device for the inner wall of a thermal boiler as described in claim 2, characterized in that, It also includes a handle (9), and the top right side of the sleeve (1) is fixedly connected to the handle (9).

4. The descaling device for the inner wall of a thermal boiler as described in claim 3, characterized in that, It also includes a fastener (13), and the front side of the sleeve (1) is fixedly connected to two fasteners (13).

5. The descaling device for the inner wall of a thermal boiler as described in claim 4, characterized in that, It also includes a water supply pipe (14), a water inlet pipe (15), a spray ring (17) and a telescopic hose (16). The water supply pipe (14) is fixedly connected between the two fixing parts (13). The water inlet pipe (15) is provided at the right end of the water supply pipe (14). The spray ring (17) is sleeved on the left side of the push rod (2). The telescopic hose (16) is fixedly connected between the spray ring (17) and the left end of the water supply pipe (14).

6. The descaling device for the inner wall of a thermal boiler as described in claim 5, characterized in that, It also includes a nozzle (18) and a pump body (19). Multiple nozzles (18) are arranged around the spray ring (17). All nozzles (18) are tilted at 30° toward the scraper (12). The pump body (19) is fixedly connected to the left side of the water pipe (14). The pump body (19) is fixedly connected to the sleeve (1).

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