A device for cleaning scale from a DC boiler

Abstract

This utility model provides a device for cleaning scale from a DC boiler, relating to the field of industrial cleaning technology. The cleaning device includes a transfer mechanism, a conveying mechanism, and a cleaning mechanism. The transfer mechanism moves the cleaning device to the side of the DC boiler, and the conveying mechanism is mounted on the transfer mechanism, with one end connected to the cleaning mechanism. The transfer mechanism includes a mounting base and casters at the bottom of the mounting base. The conveying mechanism includes a storage tank, a high-pressure pump, and a conveying hose. The cleaning mechanism includes a water spray pipe, a rotating brush head, a motor, a drive gear, and nozzles. The high-pressure pump pressurizes the cleaning fluid in the storage tank, which then flows through the conveying hose into the water spray pipe. The fluid is then sprayed onto the scale on the heated surface by the nozzles. Simultaneously, the motor drives the drive gear to rotate, causing the rotating brush head to scrub the scale. The high-pressure cleaning fluid and the rotating brush head cause the sticky and easily clump-forming scale on the heated surface to fall off, thus achieving the cleaning of stubborn scale.

Description

Technical Field

[0001] This utility model relates to the field of industrial cleaning technology, and in particular to a device for cleaning scale from DC boilers. Background Technology

[0002] Currently, thermal power generation remains one of the main power generation methods in my country, and large-scale thermal power generating units generally use once-through boilers as the main equipment. A once-through boiler refers to a boiler that relies on the pressure of a feedwater pump to make the feedwater pass sequentially through the economizer, the evaporating heating surface (water-cooled wall), and the superheater, and be completely converted into superheated steam.

[0003] Since once-through boilers lack a steam drum, most impurities in the feedwater accumulate on the heating surfaces during operation. To remove this scale, the once-through boiler needs to be circulated and cleaned with an alkaline solution at a certain temperature before ignition. However, this circulation cleaning is slow and time-consuming, and it is ineffective for cleaning sticky and easily clump-forming scale. Utility Model Content

[0004] This invention addresses the problem of difficult-to-clean scale that is highly viscous and easily clumps inside DC boilers by providing a device for cleaning scale from DC boilers.

[0005] The technical solution adopted in this utility model is:

[0006] An apparatus for cleaning scale from a DC boiler, comprising:

[0007] A transfer mechanism for moving the cleaning device to the side of the DC boiler;

[0008] A conveying mechanism, wherein the conveying mechanism is mounted on the transfer mechanism;

[0009] A cleaning mechanism, one end of which is connected to the conveying mechanism.

[0010] Furthermore, the transfer mechanism includes:

[0011] Ring-shaped mounting base;

[0012] The casters are located at the bottom of the mounting base.

[0013] Furthermore, the transfer mechanism also includes:

[0014] A placement device, wherein the placement device is disposed on the front side wall of the mounting base;

[0015] A column, wherein the column is disposed on one side wall of the mounting base;

[0016] Operating handles are formed on both sides of the top of the column.

[0017] Furthermore, the conveying mechanism includes:

[0018] A liquid storage tank for storing cleaning fluid;

[0019] A high-pressure pump is mounted on the side wall of the storage tank;

[0020] A delivery hose, one end of which is connected to the high-pressure pump and the other end of which is connected to the first connector.

[0021] Furthermore, the conveying mechanism also includes:

[0022] The top of the storage tank is equipped with a sealing cap;

[0023] A heater is installed at the center of the sealing cover;

[0024] The lower end of the heater is located inside the liquid storage tank.

[0025] Furthermore, the cleaning mechanism includes:

[0026] A water spray pipe, one end of which is connected to a first connector;

[0027] A rotating brush head is connected to the other end of the water spray pipe, and a groove is machined in the center of one side of the rotating brush head;

[0028] A nozzle, wherein the nozzle is mounted within the groove;

[0029] The water spray pipe has a control handle formed on its side wall, and a control button is installed on the control handle.

[0030] Furthermore, the cleaning mechanism also includes:

[0031] The second connector has one end connected to the water spray pipe and the other end rotatably connected to the rotating brush head. An mounting plate is formed on the side wall of the second connector.

[0032] The motor is fixed to the mounting plate;

[0033] The output shaft of the motor passes through the mounting plate and is connected to the drive gear. A driven gear ring is formed on the side wall of the rotating brush head, and the drive gear meshes with the driven gear ring.

[0034] Furthermore, the cleaning mechanism also includes:

[0035] An auxiliary handle is fitted onto the water spray pipe;

[0036] An adjustment knob, the adjustment knob being machined with threads;

[0037] The auxiliary handle has a threaded hole on its side wall, the adjustment knob is installed in the threaded hole, and the auxiliary handle is fixed to the water spray pipe by the adjustment knob.

[0038] Furthermore, the mounting base has a mounting notch in the circumferential direction for placing a high-pressure pump;

[0039] The inner wall of the mounting base is formed with a mounting flange for mounting the liquid storage tank.

[0040] The beneficial effects of this utility model are:

[0041] The cleaning fluid is pressurized by a high-pressure pump and then enters the spray pipe through a delivery hose. It is then sprayed onto the dirt on the heated surface by the nozzle. At the same time, the motor is started to drive the drive gear to rotate, so that the rotating brush head can rotate and scrub the dirt. The rinsing of the high-pressure cleaning fluid and the scrubbing of the rotating brush head cause the sticky and easily clumped dirt on the heated surface to fall off, thereby achieving the cleaning of stubborn dirt. Attached Figure Description

[0042] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0043] Figure 1 This is a schematic diagram of the cleaning device in this utility model.

[0044] Figure 2 This is a schematic diagram of the transfer mechanism of this utility model.

[0045] Figure 3 This is a schematic diagram of the conveying mechanism in this utility model.

[0046] Figure 4 This is a schematic diagram of the cleaning mechanism in this utility model.

[0047] Figure 5 This is a schematic diagram of the rotating brush head in the cleaning mechanism of this utility model.

[0048] Marked in the image:

[0049] 1. Cleaning device;

[0050] 100. Transfer mechanism; 101. Mounting base; 102. Column; 103. Casters; 104. Placer; 1011. Mounting notch; 1012. Mounting flange; 1021. Operating handle;

[0051] 200. Conveying mechanism; 201. Sealing cover; 202. Heater; 203. Liquid storage tank; 204. High-pressure pump; 205. Conveying hose; 206. First connector;

[0052] 300. Cleaning mechanism; 301. Rotating brush head; 302. Drive gear; 303. Second connector; 304. Motor; 305. Auxiliary handle; 306. Adjustment knob; 307. Water spray pipe; 308. Spray head; 3011. Driven gear ring; 3012. Brush head body; 3013. Brush bristles; 3031. Mounting plate; 3071. Control handle; 3072. Control button. Detailed Implementation

[0053] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0054] The following disclosure provides many different embodiments or examples for implementing various structures of this invention. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of this invention.

[0055] The embodiments of the utility model will now be described in detail with reference to the accompanying drawings.

[0056] This embodiment provides a device for cleaning scale from a once-through boiler. It uses high-pressure water to flush the heating surfaces inside the boiler and a brush head to remove sticky and easily clump-forming scale, achieving thorough cleaning of every corner of the heating surfaces. The cleaning device 1 mainly includes a transfer mechanism 100, a conveying mechanism 200, and a cleaning mechanism 300. The conveying mechanism 200 is mounted on the transfer mechanism 100, and one end of the conveying mechanism 200 is connected to the cleaning mechanism 300. During use, the cleaning device 1 can be easily moved to the side of the once-through boiler via the transfer mechanism 100. The hydraulic pump inside the conveying mechanism 200 pressurizes the water flow and delivers it to the cleaning mechanism 300. Then, the high-pressure water flow flushes the heating surfaces, and the electric brush head is activated to scrub the heating surfaces, thereby removing the sticky and easily clump-forming scale.

[0057] The following section will provide a detailed discussion of the various components and working principles of the cleaning device.

[0058] Figure 2 The diagram shows the structure of the transfer mechanism 100. The transfer mechanism 100 mainly consists of a mounting base 101, a column 102, casters 103, and a placement device 104. The mounting base 101 is generally annular, with a mounting flange 1012 formed inside for placing the conveying mechanism 200. A mounting notch 1011 is formed in the circumferential direction. A column 102 is located on the opposite side of the mounting notch 1011 in the circumferential direction. The mounting base 101 is fixedly connected to the column 102. An operating handle 1021 is formed in the front-rear direction at the upper end of the column 102, controlling the movement of the entire transfer mechanism 100. Brakeable casters 103 are fixedly connected to the bottom of the column 102, and brakeable casters 103 are also provided below the mounting notch 1011. Brakeable casters 103 are also provided on the front and rear sides of the bottom of the mounting base 101. Therefore, the universal wheels 103 installed at the bottom of the mounting base 101 via the operating handle 1021 allow the mounting base 101 to move freely, thereby easily transporting the entire cleaning device 1 to the side of the DC boiler and reducing the labor intensity of the workers. The placement device 104 is fixedly connected to the front side of the mounting base 101, with its upper and lower end faces being open, for storing the rotating brush head 301 in the cleaning mechanism 300.

[0059] Figure 3 The diagram shows the structure of the conveying mechanism 200, which mainly includes a sealing cover 201, a heater 202, a storage tank 203, a high-pressure pump 204, a conveying hose 205, and a first connector 206. The storage tank 203 stores an alkaline cleaning solution at a certain temperature. Since the boiler fuel is pulverized coal, combustion produces sulfides; therefore, the alkaline cleaning solution is needed to react chemically with the acidic components of the dirt, loosening the clumps before cleaning for better results. The top of the storage tank 203 is fitted with a sealing cover 201, with a through hole in its center. The heater 202 is installed inside the through hole of the sealing cover 201. This connection between the storage tank 203 and the sealing cover 201 achieves sealing and insulation. The heater 202 then heats the alkaline cleaning solution inside the storage tank 203, maintaining its temperature at a suitable level.

[0060] A high-pressure pump 204 is installed on the outer wall of the storage tank 203, penetrating the side wall of the storage tank 203. The storage tank 203 is mounted on the mounting flange 1012 of the mounting base 101, and the high-pressure pump 204 is placed at the mounting notch 1011. A delivery hose 205 is fixedly connected to the other side of the high-pressure pump 204. The delivery hose 205 has sufficient length and a first connector 206 is fixedly connected to its other end. The first connector 206 is cylindrical in shape, with a through hole machined in its center. A flange is formed on the side connected to the delivery hose 205, and threads are machined on the cylindrical surface on the side away from the delivery hose 205. An O-ring is provided on the flange end face on the same side as the threads to achieve a seal at the connection.

[0061] Combination Figure 4 and Figure 5 As can be seen, the cleaning mechanism 300 mainly consists of a rotating brush head 301, a drive gear 302, a second connector 303, a motor 304, an auxiliary handle 305, an adjustment knob 306, a water spray pipe 307, and a nozzle 308. A control handle 3071 is formed on the side wall of the water spray pipe 307. The control handle 3071 is located near the end of the water spray pipe 307 and has a control button 3072 for controlling the high-pressure water flow. Pressing the button activates the high-pressure water flow, and releasing the button deactivates it. An internal thread is machined on the end of the water spray pipe 307 near the control handle 3071, allowing the water spray pipe 307 to connect to the first connector 206, thereby connecting to the conveying mechanism 200.

[0062] The auxiliary handle 305 is fitted onto the water spray pipe 307. The top of the auxiliary handle 305 has a circular flange, and a threaded hole is machined on its side wall. The outer side wall of the adjusting knob 306 is also threaded. Thus, the auxiliary handle 305 can be adjusted along the water spray pipe 307 at any angle, and can be fixed by pressing the adjusting knob 306 against the water spray pipe 307.

[0063] The water spray pipe 307 has an external thread at the other end away from the control handle 3071, and the second connector 303 has an internal thread at one end. The water spray pipe 307 and the second connector 303 are connected by the thread, and an O-ring is provided inside the second connector 303 to seal the connection between the water spray pipe 307 and the second connector 303.

[0064] The rotating brush head 301 is mounted on the second connector 303 via a bearing, and a sealing ring is provided between the rotating brush head 301 and the second connector 303 to ensure that the high-pressure water flow does not leak at the connection. The second connector 303 has a flange formed circumferentially, and one end face of the rotating brush head 301 fits against the flange to achieve axial positioning.

[0065] See Figure 5The rotating brush head 301 mainly consists of a driven gear ring 3011, a brush head body 3012, and bristles 3013. The brush head body 3012 has a circumferentially formed flange with toothed edges, thus forming the driven gear ring 3011. A mounting plate 3031 is formed on the side wall of the second connector 303. A motor 304 is mounted at the end of the mounting plate 3031. The output shaft of the motor 304 passes through the mounting plate 3031 and is fixedly connected to the drive gear 302. The drive gear 302 meshes with the driven gear ring 3011 on the rotating brush head 301. Therefore, the output shaft of the motor 304 drives the drive gear 302 to rotate, causing the driven gear ring 3011 to rotate, thereby realizing the rotation of the rotating brush head 301 on the second connector 303, and performing a rotating brushing of dirt on the heated surface.

[0066] The brush head body 3012 has a groove machined on one end face, with a connecting part formed in the center of the groove. A through hole is opened in the center of the groove, and threads are machined on the side wall. The nozzle 308 has internal threads, a conical top, and a hexagonal prism bottom, facilitating the installation of the nozzle 308 onto the connecting part using a sleeve. An O-ring is provided inside the nozzle 308 to seal the connection. The depth of the groove is much greater than the height of the nozzle 308. The bristles 3013 are fixedly connected to the end face of the brush head body 3012 on the same side as the nozzle 308, and are located in the annular area between the side wall of the groove and the side wall of the brush head body 3012. Thus, high-pressure water flows through the spray pipe 307 into the second connector 303, and then, through the rotating brush head 301, is finally sprayed out by the nozzle 308. Simultaneously, the rotating brush head 301 rotates synchronously to scrub the dirt, thereby removing sticky and easily clump-forming dirt.

[0067] When using the cleaning device 1, push the column 102 with the operating handle 1021, which in turn pushes the mounting base 101 to easily move the cleaning device 1 next to the DC boiler. Then, add alkaline cleaning solution of a certain temperature into the storage tank 203. Adjust the grip distance between the auxiliary handle 305 and the control handle 3071, and fix the auxiliary handle 305 to the spray pipe 307 by adjusting the knob 306. Start the heater 202 and the high-pressure pump 204. The heater 202 heats the alkaline cleaning solution in the storage tank 203 to keep the temperature of the cleaning solution at a suitable level. The high-pressure pump 204 draws out the alkaline cleaning solution from the storage tank 203, pressurizes it, and then sends it into the spray pipe 307 through the delivery hose 205. Then, start the motor 304 to drive the drive gear 302 to rotate. The drive gear 302 meshes with the driven gear ring 3011 of the rotating brush head 301, thereby causing the rotating brush head 301 to rotate. Finally, hold the auxiliary handle 305 and the control handle 3071 with both hands respectively, and press the control button 3072 to spray the high-pressure cleaning fluid from the nozzle 308 onto the heating surface of the once-through boiler, so that the sticky and easily clumping dirt dissolves and loosens. At the same time, use the bristles 3013 of the rotating brush head 301 to brush the loosened dirt. After brushing, rinse again with high-pressure cleaning fluid, so that the dirt falls off the heating surface.

[0068] The above embodiments are merely a more detailed description of the present utility model. For those skilled in the art, modifications or equivalent substitutions can still be made to the technical solutions in the foregoing embodiments. 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 patent.

Claims

1. A device for cleaning scale from a DC boiler, characterized in that, include: A transfer mechanism (100) is used to move the cleaning device (1) to the side of the DC boiler; A conveying mechanism (200) is disposed on the transfer mechanism (100); A cleaning mechanism (300) is provided, one end of which is connected to the conveying mechanism (200).

2. The apparatus for cleaning scale from a DC boiler according to claim 1, characterized in that, The transfer mechanism (100) includes: Ring-shaped mounting base (101); The caster wheel (103) is located at the bottom of the mounting base (101).

3. The apparatus for cleaning scale from a DC boiler according to claim 2, characterized in that, The transfer mechanism (100) also includes: Placer (104), the placer (104) is disposed on the front side wall of the mounting base (101); A column (102) is provided on one side wall of the mounting base (101); Operating handles (1021) are formed on both sides of the top of the column (102).

4. The apparatus for cleaning scale from a DC boiler according to claim 1, characterized in that, The conveying mechanism (200) includes: Storage tank (203), the storage tank (203) is used to store cleaning fluid; A high-pressure pump (204) is mounted on the side wall of the liquid storage tank (203); A delivery hose (205) is provided, one end of which is connected to the high-pressure pump (204), and the other end of which is connected to the first connector (206).

5. The apparatus for cleaning scale from a DC boiler according to claim 4, characterized in that, The conveying mechanism (200) further includes: The top of the liquid storage tank (203) is provided with a sealing cap (201). A heater (202) is installed at the center of the sealing cover (201); The lower end of the heater (202) is located inside the liquid storage tank (203).

6. The apparatus for cleaning scale from a DC boiler according to claim 1, characterized in that, The cleaning mechanism (300) includes: A water spray pipe (307), one end of which is connected to a first connector (206); A rotating brush head (301) is connected to the other end of the water spray pipe (307), and a groove is machined in the center of one side of the rotating brush head (301). A nozzle (308) is installed in the groove; The water spray pipe (307) has a control handle (3071) formed on its side wall, and a control button (3072) is installed on the control handle (3071).

7. The apparatus for cleaning scale from a DC boiler according to claim 6, characterized in that, The cleaning mechanism (300) also includes: The second connector (303) has one end connected to the water spray pipe (307) and the other end rotatably connected to the rotating brush head (301). An mounting plate (3031) is formed on the side wall of the second connector (303). The motor (304) is fixed on the mounting plate (3031); The output shaft of the motor (304) passes through the mounting plate (3031) and is connected to the drive gear (302). A driven gear ring (3011) is formed on the side wall of the rotating brush head (301), and the drive gear (302) meshes with the driven gear ring (3011).

8. The apparatus for cleaning scale from a DC boiler according to claim 6, characterized in that, The cleaning mechanism (300) also includes: An auxiliary handle (305) is sleeved on the water spray pipe (307); An adjustment knob (306) is provided, the adjustment knob (306) having threads machined on it; The auxiliary handle (305) has a threaded hole on its side wall, and the adjustment knob (306) is installed in the threaded hole. The auxiliary handle (305) is fixed to the water spray pipe (307) by the adjustment knob (306).

9. The apparatus for cleaning scale from a DC boiler according to claim 2, characterized in that: The mounting base (101) has a mounting notch (1011) in the circumferential direction for placing the high pressure pump (204). The mounting base (101) has a mounting flange (1012) formed on its inner sidewall for mounting the liquid storage tank (203).

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