A boiler tube bundle scraper for a basic oxygen furnace plant

Abstract

The utility model discloses a kind of alkali furnace workshop boiler tube bundle scrapers, comprising: scraper body, the feed inlet of scraper body is connected with the discharge port of ash bucket by flexible pipe, scraper body is equipped with drainage lock, and drainage lock is located at the discharge end of scraper body;Flushing mechanism, the flushing mechanism includes conveying main pipe, conveying branch pipe, the conveying main pipe is set along the length direction of scraper;The conveying branch pipe is equipped with several, and several conveying branch pipes are sequentially arranged along the length direction of conveying main pipe;The conveying branch pipe is equipped with valve, and one end of conveying branch pipe is connected with conveying main pipe, the other end of conveying branch pipe is worn in the inside of scraper, and is equipped with high pressure nozzle, to high pressure shower scraper of scraper;Overturning mechanism, the overturning mechanism is drivingly connected with scraper body, to drive scraper body overturn to inclined state.The utility model has the advantages of self-cleaning function and efficient cleaning to avoid shutdown.

Description

Technical Field

[0001] This application relates to the technical field of scraper conveyors for alkali furnaces, specifically to a scraper conveyor for boiler tube bundles in an alkali furnace workshop. Background Technology

[0002] When the alkali furnace burns black liquor, the rising flue gas heats the superheater, boiler tube bundle, and economizer. Long-term operation leads to ash accumulation on the surfaces of the superheater, boiler tube bundle, and economizer. The alkali ash adhering to the tube walls of the heated surfaces is cleaned off by a soot blower and collected in the ash hopper below. The alkali ash collected in the ash hopper is discharged into a scraper conveyor and sent to the concentrated black liquor mixing tank of the alkali furnace. In the concentrated black liquor mixing tank, it is mixed with added anhydrous sodium sulfate and then sent back to the evaporation workshop for further concentration.

[0003] During the operation of the alkali furnace, large pieces of alkali are prone to falling from the boiler tube bundle and economizer. These falling alkali pieces can enter the scraper conveyor and jam it, causing the scraper conveyor to stop operating. The large alkali pieces need to be removed manually in time, but the removal of alkali pieces is difficult and takes a long time, which will seriously reduce the load and even cause the machine to shut down. Utility Model Content

[0004] Therefore, it is necessary to provide a scraper conveyor for boiler tube bundles in alkali furnace workshops to solve the problems in the existing technology where the scraper conveyor of alkali furnace is stuck by alkali blocks, making it difficult to clean, time-consuming, and prone to load reduction and shutdown.

[0005] To achieve the above objectives, the inventor provides a boiler tube bundle scraper conveyor for an alkali furnace workshop, comprising:

[0006] The scraper conveyor body has its feed inlet connected to the discharge outlet of the ash hopper via a flexible pipe. The scraper conveyor body is equipped with a drainage gate, which is located at the discharge end of the scraper conveyor body.

[0007] The flushing mechanism includes a main conveying pipe and several branch conveying pipes. The main conveying pipe is arranged along the length of the scraper conveyor. Several branch conveying pipes are arranged sequentially along the length of the main conveying pipe. Each branch conveying pipe is equipped with a valve, and one end of the branch conveying pipe is connected to the main conveying pipe. The other end of the branch conveying pipe passes through the interior of the scraper conveyor and is equipped with a high-pressure nozzle to spray the scraper of the scraper conveyor under high pressure.

[0008] A flipping mechanism is connected to the scraper conveyor body to drive the scraper conveyor body to flip to an inclined state.

[0009] In some embodiments, the flipping mechanism includes two sets of lifting mechanisms, which are respectively located at both ends of the scraper machine body and are hinged to the scraper machine body.

[0010] In some embodiments, the lifting mechanism is a pneumatic cylinder or a hydraulic cylinder.

[0011] In some embodiments, it also includes:

[0012] The drying mechanism includes a hot air blower, which is connected to the scraper conveyor body via an air duct to introduce hot air into the interior of the scraper conveyor body for drying.

[0013] In some embodiments, the fan is connected to the scraper conveyor body via several ducts, and the several ducts are arranged sequentially along the length of the scraper conveyor body.

[0014] In some embodiments, a plurality of conveying branch pipes are arranged in two rows, the two rows of conveying branch pipes are respectively connected to both sides of the scraper conveyor body, and the two rows of conveying branch pipes are staggered.

[0015] In some embodiments, each row of conveying branches has seven conveying branches.

[0016] In some embodiments, the main delivery pipe is connected to a water supply mechanism via a water pump.

[0017] In some embodiments, the water supply mechanism is a self-evaporating workshop, which is used to provide secondary condensate.

[0018] In some embodiments, the drain gate is connected to the mixing tank of concentrated black liquor from the alkali furnace via a drain pipe.

[0019] Unlike existing technologies, the scraper conveyor for boiler tube bundles in the alkali furnace workshop described in the above technical solution has its feed inlet connected to the discharge outlet of the ash hopper via a flexible pipe. When the scraper body is rotated, the flexible pipe adapts and deforms without affecting the connection with the ash hopper. The alkali ash in the ash hopper is discharged into the scraper body through the flexible pipe. When the scraper body jams and cannot operate normally, after slightly reducing the load, the flushing mechanism delivers flushing water through the main conveying pipe and branch conveying pipe, and flushes the scrapers of the scraper body through high-pressure nozzles. Depending on the actual flushing effect, the scraper body is restarted until it starts running normally. There is no need to manually clean the alkali blocks. The alkali blocks are cleaned by high-pressure flushing, which can effectively eliminate the problem of the scraper body jamming caused by alkali blocks and avoid the shutdown of the entire equipment. If the alkali blocks are relatively large or difficult to flush away, they can also be soaked for a while. The scraper body can continue to run. Under the combined action of the scraper body running on its own and the alkali blocks soaking, the alkali blocks will continuously dissolve and become smaller until they no longer affect the normal operation of the scraper body. Several conveying branch pipes are sequentially arranged along the length of the main conveying pipe. Each branch pipe is equipped with a valve, allowing for targeted flushing and precise treatment based on the location of any alkali blockage. The scraper conveyor body is equipped with a drain gate located at the discharge end. After removing the alkali block, a tilting mechanism drives the scraper conveyor body to an inclined position, allowing flushing water to flow along the length of the scraper body towards the drain gate, thus draining any accumulated water. Therefore, the boiler tube bundle scraper conveyor in the alkali furnace workshop has a built-in flushing and unblocking function. In cases of alkali blockage, the flushing function can be activated with a slightly reduced load for high-pressure flushing, while the scraper conveyor body continues to operate until normal operation is fully restored. This eliminates the need for a complete shutdown and provides efficient and rapid processing, preventing a complete equipment shutdown.

[0020] The above description of the utility model is merely an overview of the technical solution of this application. In order to enable those skilled in the art to better understand the technical solution of this application and to implement it based on the description and drawings, and to make the above-mentioned objectives and other objectives, features and advantages of this application easier to understand, the following description is provided in conjunction with the specific embodiments and drawings of this application. Attached Figure Description

[0021] The accompanying drawings are only used to illustrate the principles, implementation methods, applications, features, and effects of specific embodiments of this application and other related content, and should not be considered as limitations on this application.

[0022] In the accompanying drawings of the instruction manual:

[0023] Figure 1 This is a diagram showing the connection relationship of the scraper conveyor body at the alkali furnace in a specific embodiment;

[0024] Figure 2 This is a structural diagram of the boiler tube bundle scraper conveyor in the alkali furnace workshop described in the specific implementation method;

[0025] Figure 3 This is a diagram showing the tilting state of the boiler tube bundle scraper conveyor in the alkali furnace workshop as described in the specific implementation method.

[0026] Figure 4 This is a diagram showing the internal structure of the scraper conveyor body as described in the specific implementation method;

[0027] Figure 5 This is a bottom structural diagram of the scraper conveyor body described in a specific embodiment;

[0028] The reference numerals used in the above figures are explained as follows:

[0029] 1. Scraper conveyor body;

[0030] 101. Flexible pipe;

[0031] 102. Drainage gate;

[0032] 2. Conveying supervisor;

[0033] 3. Delivery branch pipe;

[0034] 300. Valves;

[0035] 301. High-pressure nozzle;

[0036] 4. Lifting mechanism;

[0037] 5. Hot air blower;

[0038] 6. Air ducts;

[0039] 7. Water pump;

[0040] 8. Self-evaporating workshop;

[0041] 9. Drainage pipe;

[0042] 10. Concentrated black liquor mixing tank;

[0043] 11. Ash hopper;

[0044] 12. Alkali furnace;

[0045] 13. Superheater;

[0046] 14. Boiler tube bundle;

[0047] 15. Economizer. Detailed Implementation

[0048] To illustrate the possible application scenarios, technical principles, implementable specific solutions, and achievable objectives and effects of this application in detail, the following description, in conjunction with the listed specific embodiments and accompanying drawings, provides a detailed explanation. The embodiments described herein are merely illustrative of the technical solutions of this application and are therefore intended to limit the scope of protection of this application.

[0049] In this document, the term "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this application, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0050] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit this application.

[0051] In the description of this application, the term "and / or" is used to describe the logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and A and B exist simultaneously. Additionally, the character " / " in this document generally indicates that the preceding and following objects have an "or" logical relationship.

[0052] In this application, terms such as “first” and “second” are used only to distinguish one entity or operation from another, and do not necessarily require or imply any actual quantity, hierarchy or order relationship between these entities or operations.

[0053] Unless otherwise specified, the use of terms such as “comprising,” “including,” “having,” or other similar expressions in this application is intended to cover non-exclusive inclusion, which does not exclude the presence of additional elements in a process, method, or product that includes the stated elements, such that a process, method, or product that includes a list of elements may include not only those defined elements but also other elements not expressly listed, or elements inherent to such a process, method, or product.

[0054] As understood in the Examination Guidelines, in this application, expressions such as "greater than," "less than," and "exceeding" are understood to exclude the stated number; expressions such as "above," "below," and "within" are understood to include the stated number. Furthermore, in the description of the embodiments in this application, "multiple" means two or more (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups" and "multiple times," unless otherwise explicitly specified.

[0055] In the description of the embodiments of this application, the space-related expressions used, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or drawings. They are only for the purpose of describing the specific embodiments of this application or for the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0056] Unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," "fixing," and "setting," as used in the description of the embodiments of this application, should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components or the interaction between two components. For those skilled in the art to which this application pertains, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0057] When the alkali furnace 12 burns black liquor, the rising flue gas heats the superheater 13, boiler tube bundle 14, and economizer 15. Long-term operation will cause ash to accumulate on the surface of the superheater 13, boiler tube bundle 14, and economizer 15. The alkali ash adhering to the tube wall of the heated surface is cleaned off by a soot blower and collected in the ash hopper 11 below. The alkali ash collected by the ash hopper 11 is discharged into the scraper conveyor and sent to the concentrated black liquor mixing tank 10. In the concentrated black liquor mixing tank 10, it is mixed with added anhydrous sodium sulfate and then sent back to the evaporation workshop for further concentration.

[0058] During the operation of the alkali furnace 12, large pieces of alkali are prone to falling from the boiler tube bundle 14 and economizer 15. These falling alkali pieces can easily get stuck in the scraper conveyor, causing it to stop operating. The large alkali pieces need to be removed manually in time, but the removal of alkali pieces is difficult and takes a long time, which will seriously reduce the load and even cause the machine to shut down.

[0059] Therefore, this utility model provides a boiler tube bundle scraper conveyor for alkali furnace workshop, which is used to transport the alkali ash collected in the ash hopper 11 of alkali furnace 12 to the concentrated black liquor mixing tank. In particular, it has a built-in flushing and unblocking function. When jamming caused by alkali blocks occurs, the scraper body 1 can start the flushing and unblocking function by slightly reducing the load. It can clean and efficiently process alkali blocks without stopping the machine, thus avoiding affecting the operating efficiency of the entire equipment.

[0060] In a specific embodiment, the boiler tube bundle scraper conveyor in the alkali furnace workshop includes a scraper conveyor body 1, a flushing mechanism, and a turning mechanism. The scraper conveyor body 1 is used to receive alkali ash from the ash hopper 11 and move it to the concentrated black liquor mixing tank. The flushing mechanism is used to flush the inside of the scraper conveyor body 1 to wash away alkali ash and alkali lumps to achieve the purpose of clearing blockages. The turning mechanism is used to turn the scraper conveyor body 1 to drain the water accumulated inside the scraper conveyor body 1 during flushing.

[0061] The feed inlet of the scraper conveyor body 1 is connected to the discharge outlet of the ash hopper 11 through a flexible pipe 101. The scraper conveyor body 1 is equipped with a drainage gate 102, which is located at the discharge end of the scraper conveyor body 1. The flushing mechanism includes a main conveying pipe 2 and a branch conveying pipe 3. The main conveying pipe 2 is arranged along the length of the scraper conveyor. Several branch conveying pipes 3 are arranged sequentially along the length of the main conveying pipe 2, so as to meet the flushing requirements of various positions of the scraper conveyor body 1. The branch conveying pipe 3 is equipped with a valve 300. One end of the branch conveying pipe 3 is connected to the main conveying pipe 2, and the other end of the branch conveying pipe 3 passes through the interior of the scraper conveyor and is equipped with a high-pressure nozzle 301 to spray the scraper blades of the scraper conveyor under high pressure. The tilting mechanism is connected to the scraper conveyor body 1 to drive the scraper conveyor body 1 to tilt to an inclined state.

[0062] Please see Figure 1 After the alkali furnace 12 burns black liquor for a period of time, the soot blower blows air to the superheater 13, boiler tube bundle 14 and economizer 15 for heating. The alkali ash falls into the ash hopper 11 below for collection, and then is discharged into the scraper conveyor body 1, and then sent to the concentrated black liquor mixing tank 10 through the scraper conveyor body 1.

[0063] The boiler tube bundle scraper conveyor in the alkali furnace workshop can be installed in only one layer. The feed inlet of the scraper conveyor body 1 is connected to the ash hopper 11, and the scraper conveyor body 1 discharges ash into the concentrated black liquor mixing tank 10.

[0064] Please see Figure 1The scraper conveyor can be configured in two layers. The upper layer has multiple sets of scraper conveyors for the boiler tube bundles of the alkali furnace workshop. Each set of scraper conveyors for the boiler tube bundles of the alkali furnace workshop receives the alkali ash discharged from each ash hopper 11. The feed inlet of the scraper body 1 of the upper scraper conveyor is connected to the ash hopper 11 through a flexible pipe 101. The lower layer has one set of scraper conveyors. All the scraper conveyors for the boiler tube bundles of the alkali furnace workshop in the upper layer discharge alkali ash to the scraper conveyor in the lower layer, and the scraper conveyor in the lower layer discharges alkali ash to the alkali furnace concentrated black liquor mixing tank 10.

[0065] The feed inlet of the scraper body 1 of the boiler tube bundle scraper in the alkali furnace workshop is connected to the discharge outlet of the ash hopper 11 through a flexible pipe 101. When the scraper body is flipped, the flexible pipe 101 deforms adaptively without affecting the connection with the ash hopper 11. The alkali ash in the ash hopper 11 is discharged into the scraper body 1 through the flexible pipe 101.

[0066] When the scraper conveyor body 1 jams and cannot operate normally, after slightly reducing the load, the flushing mechanism delivers flushing water through the main conveying pipe 2 and the branch conveying pipe 3, and flushes the scraper of the scraper conveyor body 1 through the high-pressure nozzle 301. Depending on the actual flushing effect, try to start the scraper conveyor body 1 until it starts running normally. There is no need to manually clean the alkali blocks. The alkali blocks are cleaned by high-pressure flushing, which can effectively eliminate the problem of the scraper conveyor body 1 jamming caused by alkali blocks and avoid the shutdown of the entire equipment. If the alkali blocks are relatively large or difficult to flush away, they can also be soaked for a while. The scraper conveyor body 1 can continue to run. Under the combined effect of the scraper conveyor body 1 running on its own and the alkali blocks soaking, the alkali blocks will continue to dissolve and become smaller until they no longer affect the normal operation of the scraper conveyor body 1.

[0067] Several conveying branch pipes 3 are arranged sequentially along the length of the main conveying pipe 2. Each conveying branch pipe 3 is equipped with a valve 300. The valve 300 at the nearest conveying branch pipe 3 can be opened according to the actual location where the alkali block is stuck, so as to carry out targeted flushing, precise treatment, and water conservation.

[0068] The scraper conveyor body 1 is equipped with a drainage gate 102, and the drainage gate 102 is located at the discharge end of the scraper conveyor body 1. After removing the alkali block, the scraper conveyor body 1 is driven to tilt to an inclined state by the flipping mechanism, so that the flushing water flows along the length of the scraper conveyor body 1 to the drainage gate 102, thereby draining the water accumulated in the scraper conveyor body 1.

[0069] Therefore, the boiler tube bundle scraper conveyor in the alkali furnace workshop has a built-in flushing and unblocking function. When the machine is stuck due to alkali blocks, the load can be slightly reduced to start the flushing function for high-pressure flushing. During this period, the scraper conveyor body 1 continues to run until it is fully restored to normal operation. There is no need to completely shut down the machine, and it can handle the situation efficiently and quickly, avoiding a complete shutdown of the equipment.

[0070] In some embodiments, the high-pressure nozzle is located between the upper and lower chains of the scraper conveyor and is inclined at 45° toward the tail of the scraper conveyor (i.e., the ash discharge port).

[0071] Please see Figure 2 In some embodiments, the tilting mechanism includes two sets of lifting mechanisms 4, which are respectively located at both ends of the scraper conveyor body 1 and are hinged to the scraper conveyor body 1; please refer to Figure 3 After rinsing or soaking, when it is necessary to drain the accumulated water, the lifting mechanism 4 can be activated. One set of lifting mechanisms 4 drives the scraper conveyor body 1 to rise, and the other set of lifting mechanisms 4 drives the scraper conveyor body 1 to fall, so that the scraper conveyor body 1 tilts so that the accumulated water flows to the drain gate 102 to drain the accumulated water. Alternatively, when it is necessary to flush the alkali blocks, one set of lifting mechanisms 4 drives the scraper conveyor body 1 to rise, and the other set of lifting mechanisms 4 drives the scraper conveyor body 1 to fall, so that the scraper conveyor body 1 tilts downward in the discharge direction to assist the flushing mechanism in removing the alkali blocks. Under the action of the scraper conveyor body 1, the downward force of the gravity of the alkali blocks, and the high-pressure flushing of the flushing mechanism, the alkali blocks are removed.

[0072] In some embodiments, the lifting mechanism 4 is a pneumatic cylinder or a hydraulic cylinder.

[0073] To prevent a large amount of alkali ash from adhering to the inside of the scraper conveyor body 1 after rinsing, some embodiments also include a drying mechanism. The drying mechanism includes a hot air blower 5, which is connected to the scraper conveyor body 1 through an air duct 6 to introduce hot air into the interior of the scraper conveyor body 1 for drying. After rinsing is completed, the drying mechanism is activated, and hot air is introduced into the interior of the scraper conveyor body 1 through the hot air blower 5 to dry the interior of the scraper conveyor body 1 and ensure the subsequent normal operation of the scraper conveyor body 1.

[0074] In some embodiments, the fan is connected to the scraper conveyor body 1 via several air ducts 6, and the several air ducts 6 are arranged sequentially along the length of the scraper conveyor body 1, so that the fan can blow to various positions of the scraper conveyor body 1.

[0075] In some embodiments, a plurality of conveying branch pipes 3 are arranged in two rows, and the two rows of conveying branch pipes 3 are respectively connected to both sides of the scraper conveyor body 1, and the two rows of conveying branch pipes 3 are staggered.

[0076] Please see Figure 4 and Figure 5 In some embodiments, each row of conveying branch pipes 3 is provided with seven conveying branch pipes 3, that is, two rows of conveying branch pipes 3 can flush fourteen points of the scraper machine body 1.

[0077] In some embodiments, the main delivery pipe 2 is connected to a water supply mechanism via a water pump 7.

[0078] In some embodiments, the water supply mechanism can be the tap water supply equipment of the factory where the alkali furnace is located, or it can be the self-evaporation workshop 8. The self-evaporation workshop 8 is used to provide secondary condensate to recycle water resources, which is more energy-saving and environmentally friendly.

[0079] In some embodiments, the drainage gate 102 is an electric gate that opens when drainage is needed and closes when drainage is not needed, so as not to affect the conveying of alkali ash by the scraper conveyor body 1.

[0080] Please see Figure 5 In some embodiments, the drainage gate 102 is located on the bottom surface of the scraper conveyor body 1, so that most of the accumulated water can be discharged and the remainder can be dried and removed by the drying mechanism.

[0081] In some embodiments, the drain gate 102 is connected to the alkali furnace concentrated black liquor mixing tank through a drain pipe 9. The drain pipe 9 is also a flexible pipe that does not affect the flipping mechanism flipping the scraper machine body 1.

[0082] Finally, it should be noted that although the above embodiments have been described in the text and drawings of this application, this should not limit the scope of patent protection of this application. Any technical solutions that are based on the essential concept of this application and utilize the content described in the text and drawings of this application, resulting in equivalent structural or procedural substitutions or modifications, as well as the direct or indirect application of the technical solutions of the above embodiments to other related technical fields, are all included within the scope of patent protection of this application.

Claims

1. A scraper conveyor for boiler tube bundles in an alkali furnace workshop, characterized in that, include: The scraper conveyor body has its feed inlet connected to the discharge outlet of the ash hopper via a flexible pipe. The scraper conveyor body is equipped with a drainage gate, which is located at the discharge end of the scraper conveyor body. The flushing mechanism includes a main conveying pipe and several branch conveying pipes. The main conveying pipe is arranged along the length of the scraper conveyor. Several branch conveying pipes are arranged sequentially along the length of the main conveying pipe. Each branch conveying pipe is equipped with a valve, and one end of the branch conveying pipe is connected to the main conveying pipe. The other end of the branch conveying pipe passes through the interior of the scraper conveyor and is equipped with a high-pressure nozzle to spray the scraper of the scraper conveyor under high pressure. A flipping mechanism is connected to the scraper conveyor body to drive the scraper conveyor body to flip to an inclined state.

2. The boiler tube bundle scraper machine for the alkali furnace workshop according to claim 1, characterized in that, The flipping mechanism includes two sets of lifting mechanisms, which are respectively located at both ends of the scraper machine body and are hinged to the scraper machine body.

3. The scraper conveyor for boiler tube bundles in the alkali furnace workshop according to claim 2, characterized in that, The lifting mechanism is a pneumatic cylinder or a hydraulic cylinder.

4. The boiler tube bundle scraper machine for the alkali furnace workshop according to claim 1, characterized in that, Also includes: The drying mechanism includes a hot air blower, which is connected to the scraper conveyor body via an air duct to introduce hot air into the interior of the scraper conveyor body for drying.

5. The boiler tube bundle scraper machine for the alkali furnace workshop according to claim 4, characterized in that, The fan is connected to the scraper conveyor body through several air ducts, and the air ducts are arranged sequentially along the length of the scraper conveyor body.

6. The boiler tube bundle scraper conveyor in the alkali furnace workshop according to claim 1, characterized in that, Several conveying branch pipes are arranged in two rows, and the two rows of conveying branch pipes are respectively connected to both sides of the scraper conveyor body, and the two rows of conveying branch pipes are staggered.

7. The boiler tube bundle scraper machine for the alkali furnace workshop according to claim 4, characterized in that, Each row of conveyor branches has seven conveyor branches.

8. The boiler tube bundle scraper machine for the alkali furnace workshop according to claim 1, characterized in that, The main delivery pipe is connected to the water supply mechanism via a water pump.

9. The boiler tube bundle scraper machine for the alkali furnace workshop according to claim 8, characterized in that, The water supply mechanism is a self-evaporating workshop, which is used to provide secondary condensate.

10. The boiler tube bundle scraper machine for the alkali furnace workshop according to claim 1, characterized in that, The drainage gate is connected to the mixing tank of concentrated black liquor from the alkali furnace via a drainage pipe.

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