Equipment for flushing cylindrical boilers

Abstract

To provide a boiler low temperature state quick flushing method.SOLUTION: A boiler flushing device includes: an activation mechanism comprising a boiler body and a power assembly provided at the boiler body; a scale removal mechanism comprising a transmission assembly provided at the power assembly and a scale scraping assembly provided at the transmission assembly; and a uniform stirring mechanism comprising a fixed column provided at the boiler body, a limiting assembly provided at the fixed column, and a motion assembly provided at the limiting assembly. The scale removal mechanism allows a scale scraping brush to perform circular motion on an inner wall of the boiler body to scrape scales on the inner wall of the boiler body. A scraping member is provided on the inner wall of the boiler body and cleans the scale scraping brush. At the same time, the uniform stirring mechanism is provided on the fixed column to avoid the scraped scales from accumulating on a bottom part of the boiler body and being discharged from the boiler body with water flow through a drain pipe and allow cleaning to be performed more thoroughly.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to the technical field of boiler cleaning, and more particularly to a method and apparatus for rapid flushing of a boiler in a cold state. [Background technology]

[0002] In daily industrial production, boiler water is constantly circulated and concentrated during use, and the mineral content in the water increases, which causes scale to form on the inner wall of the furnace body and oxygen corrosion to occur. Once scale forms on the inner wall of the furnace body, it will greatly reduce the heat exchange efficiency and accelerate the oxygen corrosion of the boiler. As a result of oxygen corrosion of the boiler, the metal surface will be activated and Fe 3+ , Fe 2+ This will seriously affect the safety and efficiency of boiler operation, so the inner wall of the boiler furnace body must be cleaned regularly.

[0003] However, traditional flushing involves directly discharging a large amount of water into the boiler through a temporary water supply system, which then flushes the boiler with water. The temporary water injection system continues to operate until the boiler water quality is acceptable and the flushing is completed. This flushing method has the disadvantages of consuming a large amount of water, resulting in unnecessary waste and increasing the cost of pickling. Summary of the Invention

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Some simplifications or omissions may be made in this section and in the Abstract and Title of this application to avoid obscuring the purpose of this section, Abstract, and Title, but such simplifications or omissions are not intended to limit the scope of the present invention.

[0005] The conventional flushing method for existing boilers as described above has the drawback of consuming a large amount of water in the flushing process, which causes unnecessary waste and increases the cost of pickling. In view of this, the present invention is presented.

[0006] SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a method for rapid boiler cold state flashing.

[0007] In order to solve the above technical problems, the present invention provides the following technical solution: a method for rapid boiler cold state flushing, including the steps of: flushing the outlet pipe using a boiler flushing device by closing a switch unit; specifying a feedwater amount based on a steam separator water discharge cycle, and sampling and analyzing the steam separator water quality after the cycle is over; comparing the steam separator water quality to determine whether to continue operating the electric pump and stop the furnace circulation pump; performing variable flushing by adjusting the BR valve opening and the electric pump feedwater amount, and specifying the flushing cycle; detecting the Fe content in the steam separator water quality after the flushing cycle is over, and determining the end of the cold state flushing if the Fe content in the steam separator water quality is less than 200 μg / L for two consecutive analyses.

[0008] As a preferred solution for the boiler cold state rapid flashing method described in the present invention, the feedwater pump is started and the feedwater flow rate is controlled to be 200 t / h or less. After the water is discharged from the steam separator, the feedwater flow rate is increased and flashing is performed via the WDC valve top discharge.

[0009] As a preferred solution of the boiler cold state rapid flushing method described in the present invention, after the set flushing cycle is reached, sampling is carried out to analyze the separator water quality, and if Fe<800μg / L, the furnace circulation pump is maintained in continuous operation, and if Fe>800μg / L, the furnace circulation pump is stopped in operation.

[0010] As a preferred solution of the boiler cold state rapid flashing method described in the present invention, the switch unit includes: a furnace circulation pump inlet / outlet electric door, a recirculation adjustment door, a heat preservation pump heat preservation valve manual door, a WDC valve, and a BR valve front drain door.

[0011] This cleaning method has the following beneficial effects: By using a variable flow rate flushing method in which the BR valve opening is reduced to circulate at a low flow rate and discharge at a high flow rate, and the BR valve opening is increased to circulate at a high flow rate and discharge at a low flow rate, the water wall system can be quickly and effectively flushed after pickling, effectively shortening the flushing time, saving inspection periods, greatly improving water flushing efficiency, saving flushing water, maximizing flushing cleanliness, and effectively removing residues from each pipe segment of the water wall system after pickling.

[0012] A second object of the present invention is to provide a flushing device for solving the problem that when scale occurs on the inner wall of a boiler body, oxygen corrosion of the boiler is promoted, affecting the operational safety and efficiency of the boiler.

[0013] In order to solve the above technical problems, the present invention provides the following technical solution: A boiler flushing device includes: a starting mechanism consisting of a boiler body and a power assembly provided on the boiler body, a scale removing mechanism consisting of a transmission assembly provided on the power assembly and a scale scraping assembly provided on the transmission assembly, and a uniform stirring mechanism consisting of a fixed post provided on the boiler body, a limiting assembly provided on the fixed post, and a movement assembly provided on the limiting assembly.

[0014] As a preferred solution of the boiler flushing device described in the present invention, the boiler body comprises a water inlet pipe provided at the end of the boiler body, a drain pipe provided at the bottom of the boiler body, and a scraping member provided on the boiler body, and the power assembly comprises a support rod provided at the end of the boiler body, a water wheel provided on the support rod, a connecting shaft provided on the water wheel, and a bevel gear provided on the connecting shaft, and rolling grooves are opened at both ends of the water wheel, and the support rod is fitted into the rolling grooves.

[0015] As a preferred solution of the boiler flushing apparatus described in the present invention, the transmission assembly comprises a rotating gear mounted on the bevel gear, a fixed column mounted on the rotating gear, a transmission gear mounted on the fixed column, a gear ring mounted on the transmission gear, and a connecting rod mounted on the fixed column, wherein both ends of the connecting rod are fixedly connected to the fixed column through the fixed column, and both ends of the connecting rod are provided with bumps, and the length of the connecting rod is smaller than the inner diameter of the gear ring.

[0016] In a preferred solution of the boiler flushing device described in the present invention, the scale scraping assembly comprises a connecting rod mounted on the gear ring, a scale scraping brush mounted on the connecting rod, and a fixed rod mounted on the fixed post, one end of the fixed rod being provided with an abutment block, and both ends of the fixed rod being fixedly connected to the scale scraping brush via the fixed post.

[0017] As a preferred solution of the boiler flushing device described in the present invention, the limiting assembly comprises a positioning ring provided at the bottom end of the fixed column, a rotating rod provided on the positioning ring, a rotating column provided on the rotating rod, and a telescopic rod provided on the rotating column.

[0018] In a preferred solution of the boiler flushing device described in the present invention, the movement assembly consists of a threaded rod mounted on a fixed post, a threaded ring mounted on the threaded rod, and a fan blade mounted on the threaded ring, with turbulence holes provided on the fan blade, and a restricting ring provided at the end of the threaded rod.

[0019] The present invention has the following beneficial effects: By providing a scale removal mechanism, when liquid enters the boiler body through the water inlet pipe, the scale scraping brush can make a circular motion on the inner wall of the boiler body, scraping off the scale on the inner wall of the boiler body, and a scraping member is provided on the inner wall of the boiler body to achieve the cleaning purpose of the scale scraping brush, while providing a uniform stirring mechanism on the fixed column reduces the accumulation of scraped scale at the bottom of the boiler body, and the scale is discharged from the boiler body through the drain pipe together with the water flow, allowing for more thorough cleaning. [Brief explanation of the drawings]

[0020] In order to more clearly describe the technical solutions of the embodiments of the present invention, the following will briefly describe the accompanying drawings that need to be used in the description of the embodiments. Obviously, the accompanying drawings described below are only some embodiments of the present invention, and those skilled in the art can obtain other drawings based on these accompanying drawings without any creative work. [Figure 1] 1 is an overall schematic view of a flushing device of the present invention. [Figure 2] 1 is a cross-sectional view of the overall structure of a flushing device of the present invention. [Figure 3] 2 is a schematic diagram of a power mechanism of the flushing device of the present invention. FIG. [Figure 4] 1 is a structural schematic diagram of a transmission assembly of the flushing device of the present invention; [Figure 5] 1 is a structural schematic diagram of a uniform stirring mechanism of a flushing device according to the present invention. [Figure 6] 1 is a schematic diagram of the initial state of the transmission assembly of the flushing device of the present invention; [Figure 7]2 is a schematic diagram of the component connections of the flushing device of the present invention. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0021] In order to make the above objects, features and advantages of the present invention more clear and understandable, specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings of the specification.

[0022] In the following description, many details are described to fully understand the present invention, but the present invention can be implemented in other forms different from those described herein, and those skilled in the art can similarly promote the present invention without violating the meaning of the present invention, so the present invention is not limited to the specific examples disclosed below.

[0023] As used herein, "one embodiment" or "embodiment" includes a particular feature, structure, or characteristic that may be included in at least one implementation of the present invention. The appearances of "in one embodiment" in various places in this specification do not all refer to the same embodiment, nor do they refer to an embodiment that is separate or mutually exclusive from other embodiments.

[0024] Furthermore, the present invention will be described in detail in conjunction with schematic drawings, and when describing the embodiments of the present invention in detail, for the convenience of explanation, cross-sectional views showing the apparatus may be locally enlarged without following a general scale, and the schematic drawings are merely illustrative and do not limit the scope of protection of the present invention, and should include three-dimensional spatial dimensions of length, width, and depth in actual fabrication.

[0025] Example 1 The present invention provides a method for rapid boiler cold state flashing, flushing the outlet piping using a boiler flushing device (G) by closing the switch unit; Specifying the amount of water to be supplied based on the steam separator water discharge cycle, and sampling and analyzing the steam separator water quality after the cycle ends; determining whether to continue or stop the operation of the electric pump by comparing the steam separator water quality; performing variable flushing by adjusting the BR valve opening and the amount of water supplied by the electric pump, and specifying a flushing cycle; and detecting the Fe content in the steam separator water after the flushing cycle is completed, and determining that the low-temperature flushing is completed when the Fe content in the separator water is less than 200 μg / L for two consecutive analyses, where the two analytical standards are to measure the Fe content in the separator with the BR valve opening increased and decreased.

[0026] Specifically, the feedwater pump is started and the feedwater flow rate is controlled to be 200 t / h or less. After the steam separator discharges, the feedwater flow rate is increased and the WDC valve top discharge is opened to perform flushing. After the steam separator discharges, the feedwater flow rate is increased to 300 t / h and the WDC valve top discharge is opened to perform flushing. Water samples are analyzed every two hours during the flushing period.

[0027] Here, after the set flushing cycle is reached, sampling is performed to analyze the separator water quality. If Fe is less than 800 μg / L, the reactor circulation pump is maintained in continuous operation. If Fe is greater than 800 μg / L, the reactor circulation pump is stopped, the feedwater flow rate at the economizer inlet is maintained at 300 to 400 t / h, and top discharge flushing is performed for 2 hours, after which the water quality is analyzed again.

[0028] Furthermore, the switch unit includes an electric door for the reactor circulation pump inlet and outlet, a recirculation adjustment door, a manual door for the heat preservation pump heat preservation valve, a WDC valve, and a front drain door for the BR valve, and opens the reactor circulation pump subcooled water adjustment door to 50% or more to inject water into the reactor circulation pump inlet pipe.

[0029] The operation procedure is as follows: first, close the furnace circulation pump inlet / outlet electric door, recirculation adjustment door, heat preservation pump heat preservation valve manual door and WDC valve, open the furnace circulation pump subcooled water adjustment door to 50% or more, inject water into the furnace circulation pump inlet pipe, and pay attention to the following: the separator water level must be isolated quickly, and the water cooling wall must not actually be filled with water, then open the inlet water discharge electric door and manual door to ensure that water does not enter the superheater, and before starting the furnace circulation pump, flush the inlet pipe with subcooled water, open the BR valve front drain door and flush the outlet pipe, and close the furnace circulation pump outlet blind pipe. After flushing, start the feedwater pump and control the feedwater flow rate to be below 200t / h. After the steam separator discharges, increase the feedwater flow rate to 300t / h. Open the WDC valve top discharge and flush. During the flushing period, analyze the water sample every 2 hours. After the separator discharges, check whether water comes out of the separator water side sampling pipe during the steam sampling period. If not, carry out the inspection process. If no water sample is found, flush each WDC valve inlet line and sampling line for more than 20 minutes during boiler flushing. The WDC valve rear electric door must be closed during sampling. During the economizer flushing period, the BR valve front drain door is closed and the BR valve rear water discharge door is opened to flush the BR valve rear pipeline. At this time, the steam separator water storage tank water quality is detected as Fe<500μg / L. The furnace circulation pump is started, and the economizer inlet water supply flow rate is adjusted to about 900t / h for flushing. During flushing, the furnace circulation pump subcooled water adjustment door opening angle is about 50. %, flush for 1 hour, sample and analyze the separator water quality, if Fe<800μg / L, maintain continuous operation of the furnace circulation pump, if Fe>800μg / L, stop operation of the furnace circulation pump, maintain the economizer inlet feedwater flow rate at 300-400t / h, perform top discharge flushing for 2 hours, then analyze the water quality again, carefully monitor the temperature of the motor room during the furnace circulation pump flushing, if the temperature is above 55℃, stop operation of the furnace circulation pump, isolate it, inspect the magnetic filter of the furnace circulation pump, and inject water into the furnace circulation pump again,Finally, variable flow flushing is performed. First, stirring is performed at a high flow rate, the BCP flow rate is increased, the BR valve opening is set to about 60%, the electric pump flow rate is reduced to 150t / h, and the stirring is performed at a high flow rate for 1 hour. Then, flushing is performed at a high flow rate, the BR valve opening is reduced, the BCP is recirculated, the electric pump water flow rate to the boiler is increased and controlled to 300t / h, and the circulation is controlled for 2 hours. This flushing is repeated twice in succession, and when the separator water quality Fe is less than 200ug / l, the end of low-temperature flushing is determined. The standard for the two analyses is to measure the separator Fe content when the BR valve opening is increased and then decreased.

[0030] Example 2 1 to 4, a boiler flushing device is provided, which includes a starting mechanism 100 consisting of a boiler body 101 and a power assembly 102 provided on the boiler body 101, a scale removal mechanism 200 consisting of a transmission assembly 201 provided on the power assembly 102 and a scale scraping assembly 202 provided on the transmission assembly 201, and a uniform stirring mechanism 300 consisting of a fixed column 301 provided on the boiler body 101, a limiting assembly 302 provided on the fixed column 301, and a movement assembly 303 provided on the limiting assembly 302, and the scale removal mechanism 200 can effectively scrape off scale on the inner wall of the boiler body and extend the service life of the boiler.

[0031] Specifically, the boiler body 101 comprises a water inlet pipe 101a provided at the end of the boiler body 101, a drain pipe 101b provided at the bottom of the boiler body 101, and a scraping member 101c provided on the boiler body 101, and the power assembly 102 comprises a support rod 102a provided at the end of the boiler body 101, a water wheel 102b provided on the support rod 102a, and a water wheel 102b provided on the water wheel 102b. The water turbine 102b has a connecting shaft 102c fixed to the connecting shaft 102c, and a bevel gear 102d mounted on the connecting shaft 102c. Rolling grooves 102b-1 are formed on both ends of the water turbine 102b, the support rod 102a is fitted into the rolling grooves 102b-1, and through holes are formed on both ends of the water turbine 102b. The connecting shaft 102c is fixedly connected to the water turbine 102b via the water turbine 102b, and both ends of the connecting shaft 102c are fixedly connected to the bevel gear 102d.

[0032] Furthermore, the transmission assembly 201 comprises a rotating gear 201a mounted on the bevel gear 102d, a fixed column 201b mounted on the rotating gear 201a, a transmission gear 201c mounted on the fixed column 201b, a gear ring 201d mounted on the transmission gear 201c, and a connecting rod 201e mounted on the fixed column 201b, both ends of the connecting rod 201e being fixedly connected to the fixed column 201b via the fixed column 301, and bumps 201e-1 are provided on both ends of the connecting rod 201e, the length of the connecting rod 201e is smaller than the inner diameter of the gear ring 201d, only one transmission gear 201c is in contact with the gear ring 201d, and the rotation direction of the gear ring 201d can be changed by changing the transmission gear 301c in contact with the gear ring 201d.

[0033] Furthermore, the scale scraping assembly 202 consists of a connecting rod 202a mounted on the gear ring 201d, a scale scraping brush 202b mounted on the connecting rod 202a, and a fixed rod 202c mounted on the fixed column 301, with an abutment block 202d mounted on one end of the fixed rod 202c, and both ends of the fixed rod 202c being fixedly connected to the scale scraping brush 202b via the fixed column 301, and when the abutment block 202d comes into contact with the bump 201e-1, the connecting rod 201e displaces the transmission gear 201c, and another transmission gear 201c meshes with the gear ring 201d, changing the direction of rotation.

[0034] All other structures are the same as those in the first embodiment.

[0035] Operation process: When the water flow enters the boiler body 101 through the water inlet pipe 101a, the water flow passes through the water wheel 102b and flows downward. At this time, the blades of the water wheel 102b are subjected to the impact force of the water flow, causing the water wheel 102b to start rotating. When the water wheel 102b rotates, the bevel gears 102d at both ends of the connecting shaft 102c rotate. Note that in the initial state, the bevel gear 102d at one end is engaged with the rotating gear 201a below it, and the bevel gear 102d at the other end is not engaged with the rotating gear 201a below it. Similarly, the transmission gear 301c below the rotating gear 201a that is engaged with the bevel gear 102d is engaged with the gear ring 201, and the other transmission gear 301c is engaged with the gear ring 201d. As a result, the gear ring 201d rotates in a certain direction, rotating the scale scraping brush 202b. As the scale scraping brush 202b rotates, it scrapes off the scale on the inner wall of the boiler body 101. Since the scale also adheres to the surface of the scale scraping brush 202b, when the scale scraping brush 202b rotates together with the gear ring 201d, it passes through the scraping member 101c, and the scale scraping brush 202b and the scraping member 101c scrape off the scale adhering to their surfaces, thereby cleaning the scale on the inner wall of the boiler body 101 and achieving the effect of self-cleaning at the same time.

[0036] Example 3 5 to 7, this embodiment differs from the above embodiments in the following respects: the limiting assembly 302 comprises a positioning ring 302a mounted on the bottom end of the fixed pole 301, a rotating rod 302b mounted on the positioning ring, a rotating pole 302c mounted on the rotating rod 302b, and an extendable rod 302d mounted on the rotating pole 302c; a rotating groove is opened on the end surface of the positioning ring 302a, which is fitted to the rotating rod 302b, allowing the rotating rod 302b to perform circular motion within the positioning ring 302a; and the positioning ring 302a is used to prevent the rotating pole 302c from displacing up and down.

[0037] Specifically, the motion assembly 303 comprises a threaded rod 303a mounted on the fixed column 301, a threaded ring 303b mounted on the threaded rod 303a, and a fan blade 303c mounted on the threaded ring 303b. Turbulence holes 303c-1 are provided on the fan blade 303c, and a restrictor ring 303a-1 is provided at the end of the threaded rod 303a. When the gear ring 201d rotates, the threaded rod 303a rotates, and the turbulence holes 303c-1 reduce the resistance of the water flow. The fan blade 303c moves up and down on the upper surface of the threaded rod 303a, exerting a vertical force on the water flow. When the horizontal force of the water flow meets the vertical force of the water flow, the water flow and scale are mixed together, reducing the accumulation of scraped scale at the bottom of the boiler body. The scale is then discharged from the boiler body 101 through the drain pipe together with the water flow, allowing it to be more thoroughly cleaned.

[0038] All other structures are the same as those in the second embodiment.

[0039] Operation process: When the scale scraping brush 202b rotates, it also rotates the threaded rod 303a. When the threaded rod 303a rotates, the fan blade 303c moves along the thread on the threaded rod 303a via the rotating column 302c. When the fan blade 303c moves, the distance between the rotating column 302c and the threaded ring 303b changes via the telescopic rod 302d. The rotating rod 302b rotates in the rotating groove of the positioning ring 302a. When the distance between the column 302c and the positioning ring 302a is fixed and the fixed rod 202c performs a circular motion together with the scale scraping brush 202b, the connecting rod 201e does not rotate together with the scale scraping brush 202b, and the abutment block 202d on the fixed rod 202c abuts against the bump 201e-1. When the fixed rod 202c abuts against the abutment block 202d, the connecting rod 201e is displaced, and at this time, the gear ring 201d, which was originally engaged with the gear ring 201d, is displaced. When the rotation of the scale scraping brush 202b is stopped, a horizontal force is generated, driving the water flow. When the fan blade 303c moves up and down, a vertical force is generated, driving the water flow. When the horizontal force of the water flow meets the vertical force of the water flow, the water flow and the scale are mixed together, achieving the effect of mixing. This reduces the accumulation of scraped scale at the bottom of the boiler body, and the scale is discharged from the boiler body 101 through the drain pipe 101b together with the water flow, allowing for more thorough cleaning.

[0040] It should be noted that the structure and arrangement of the present application as illustrated in several different exemplary embodiments are merely exemplary. While only a few embodiments have been described in detail in this disclosure, those reading the contents of this disclosure will recognize that numerous modifications are possible without departing from the novel teachings and advantages of the subject matter described herein (e.g., variations in the size, scale, structure, shape, and proportions of each component, as well as parameters (e.g., temperature, pressure, etc.), mounting arrangements, material use, color, orientation, etc.). For example, a single-piece component may be composed of multiple parts or components, the position of components may be reversed or otherwise altered, and the nature, number, or location of separate components may be altered or varied. Accordingly, all such modifications are intended to be within the scope of the present invention. The order or sequence of any process or method steps may be varied or rearranged according to alternative embodiments. In the claims, the term "apparatus plus function" is intended to cover structures that perform the functions described herein that are not only structurally equivalent but also structurally equivalent. Other substitutions, modifications, changes, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments without departing from the scope of the present invention. Therefore, it is intended that the present invention not be limited to a particular embodiment, but that it cover many modifications that will still fall within the scope of the appended claims.

[0041] Furthermore, in order to provide a concise description of exemplary embodiments, it is possible not to describe all of the features of an actual embodiment (i.e., features that are not relevant to the currently best mode of carrying out the invention or that are not relevant to the implementation of the invention).

[0042] It should be understood that numerous specific embodiment decisions may be made during the process of developing an actual embodiment, such as any engineering or design project. While such a development effort might be complex and time-consuming, for those of ordinary skill in the art having the benefit of this disclosure, it will nevertheless be a routine undertaking of design, manufacturing, and production without undue experimentation.

[0043] Furthermore, the above embodiments are only for illustrating the technical solutions of the present invention, and are not intended to be limiting. Although the present invention has been described in detail with reference to preferred embodiments, it should be understood by those skilled in the art that any modifications or equivalent replacements made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention shall all fall within the scope of the claims of the present invention.

Claims

1. A power assembly (102) provided in a boiler body (101), a scale removal mechanism (200) comprising a transmission assembly (201) provided on the power assembly (102) and a scale scraping assembly (202) provided on the transmission assembly (201); a uniform stirring mechanism (300) consisting of a second fixed column (301) provided on the boiler body (101), a limiting assembly (302) provided on the second fixed column (301), and a movement assembly (303) provided on the limiting assembly (302); The apparatus for flushing a cylindrical boiler is characterized in that the power assembly (102) receives the impact force of a water flow, causing the scale removal mechanism (200) and the uniform stirring mechanism (300) to rotate, thereby discharging scale from the boiler body (101).

2. The power assembly (102) comprises a support rod (102a) provided at the end of the boiler body (101), a water wheel (102b) provided on the support rod (102a), a connecting shaft (102c) provided on the water wheel (102b), and a bevel gear (102d) provided on the connecting shaft (102c); The apparatus for flushing a cylindrical boiler according to claim 1, characterized in that the water wheel (102b) is provided with rolling grooves (102b-1) at both ends, and the support rod (102a) is fitted into the rolling grooves (102b-1).

3. The transmission assembly (201) comprises a rotary gear (201a) meshing with the bevel gear (102d), a first fixed column (201b) mounted on the rotary gear (201a), a transmission gear (201c) mounted on the first fixed column (201b), a gear ring (201d) meshing with the transmission gear (201c), and a connecting rod (201e) mounted on the first fixed column (201b); Both ends of the connecting rod (201e) are fixedly connected to the first fixed column (201b) via the second fixed column (301); The apparatus for flushing a cylindrical boiler according to claim 2, characterized in that the connecting rod (201e) is provided with bumps (201e-1) at both ends, and the length of the connecting rod (201e) is smaller than the inner diameter of the gear ring (201d).

4. the scale scraping assembly (202) comprises a connecting rod (202a) provided on the gear ring (201d), a scale scraping brush (202b) provided on the connecting rod (202a), and a fixed rod (202c) provided on the second fixed column (301); 4. The apparatus for flushing a cylindrical boiler according to claim 3, wherein the fixed rod (202c) is provided with abutment blocks (202d), and both ends of the fixed rod (202c) are fixedly connected to scale scraping brushes (202b) via the second fixed posts (301).

5. 5. The apparatus for flushing a cylindrical boiler according to claim 4, wherein the limiting assembly (302) comprises a positioning ring (302a) provided at the bottom end of the second fixed column (301), a rotating rod (302b) provided on the positioning ring, a rotating column (302c) provided on the rotating rod (302b), and a telescopic rod (302d) provided on the rotating column (302c).

6. The motion assembly (303) comprises a threaded rod (303a) mounted on the second fixed column (301), a threaded ring (303b) mounted on the threaded rod (303a), and a fan blade (303c) mounted on the threaded ring (303b); 6. The apparatus for flushing a cylindrical boiler according to claim 5, characterized in that turbulence holes (303c-1) are provided on the fan blades (303c) and a restricting ring (303a-1) is provided at the end of the threaded rod (303a).

7. An apparatus for flushing a cylindrical boiler as described in Claim 6, wherein the boiler body (101) comprises a water inlet pipe (101a) provided at the end of the boiler body (101), a drain pipe (101b) provided at the bottom of the boiler body (101), and a scraping member (101c) provided on the boiler body (101).

8. When the water flow enters the boiler body (101) through the water inlet pipe (101a), the water flow flows downward through the water wheel (102b), and the blades of the water wheel (102b) receive the impact force of the water flow, causing the water wheel (102b) to start rotating, 8. The device for flushing a cylindrical boiler according to claim 7, wherein when the water wheel (102b) rotates, the bevel gears (102d) on both ends of the connecting shaft (102c) rotate, thereby rotating the gear ring (201d), which in turn rotates the scale scraping brush (202b), thereby scraping off the scale on the inner wall of the boiler body (101).

9. An apparatus for flushing a cylindrical boiler as described in Claim 8, wherein when the scale scraping brush (202b) rotates together with the gear ring (201d), the scale scraping brush (202b) and the scraping member (101c) scrape off scale adhering to their surfaces, cleaning the scale from the inner wall of the boiler body (101), and at the same time the scale scraping brush (202b) and the scraping member (101c) perform self-cleaning.

10. When the scale scraping brush (202b) rotates, the threaded rod (303a) rotates at the same time, and when the threaded rod (303a) rotates, the fan blade (303c) moves along the thread on the threaded rod (303a) via the rotating column (302c), When the fan blade (303c) moves, the distance between the rotating column (302c) and the screw ring (303b) changes via the telescopic rod (302d), and the rotating rod (302b) rotates in the rotation groove of the positioning ring (302a), so that the distance between the rotating column (302c) and the positioning ring (302a) is fixed. When the fixed rod (202c) makes a circular motion together with the scale scraping brush (202b), the connecting rod (201e) does not rotate together with the scale scraping brush (202b), and the abutment block (202d) on the fixed rod (202c) abuts against the bump (201e-1). When the fixed rod (202c) abuts against the abutment block (202d), the connecting rod (201e) is displaced, and at this time, the gear ring (2 The transmission gear (301c) meshing with the gear ring (201d) disengages from the transmission gear (301c), and the transmission gear (301c) at the other end meshes with the gear ring (201d), and at the same time, the rotating gear (201a) at the other end meshes with the upper bevel gear (102d). At this time, the rotation direction of the gear ring (201d) changes, and the scale scraping brush (202b) moves in the opposite direction. At the same time, the fan blade (303c) moves in the opposite direction via the rotating column (302c).

10. The apparatus for flushing a cylindrical boiler according to claim 9, wherein the scale is discharged from the boiler body (101) through the drain pipe (101b) together with the water flow.

Images