A dust remover multi-bin pump series-parallel hoisting system

Abstract

This invention discloses a series-parallel hoisting system for multi-compartment pumps in a dust collector, belonging to the field of ash conveying technology for dust collectors in thermal power plants. It includes an ash conveying header and several sets of ash conveying units. Each set of ash conveying units is connected to the header and used to transport fly ash from the other sets of units to the header, where it is collected and discharged. Each ash conveying unit includes an ash conveying pipe and several sets of ash conveying devices. The ash conveying devices are connected in series via the ash conveying pipe. Each ash conveying device includes a receiving component and a conveying component. Compensation components are provided between the receiving component and the conveying component, or between the conveying component and the conveying pipe, to absorb thermal displacement. This multi-compartment pump series-parallel hoisting system effectively solves the problems in existing technologies where multiple compartment pumps are connected in series via ash conveying pipes, resulting in different thermal displacements in different ash hoppers, leading to deformation or even damage to the conveying pipes or pumps; and also addresses the low ash conveying efficiency.

Description

Technical Field

[0001] This invention belongs to the field of ash conveying technology for dust collectors in thermal power plants. Specifically, it relates to a series-parallel hoisting system for multi-compartment pumps in a dust collector. Background Technology

[0002] In thermal power plants, a certain amount of fly ash is continuously collected in the dust collector hopper. The fly ash enters the ash conveying pump below the hopper, and compressed air is used to transport the fly ash out through the conveying pipeline. Some power plant (baghouse) dust collectors have relatively small ash volumes in their hoppers, requiring multiple hopper pumps to convey fly ash through a single conveying pipeline. However, this presents the following challenges: 1. The ash hopper is connected to the silo pump, and the silo pump is connected to the ash conveying pipeline to form a whole. However, the thermal displacement values ​​of each ash hopper are different. If the influence of thermal displacement is not eliminated, it will cause deformation or even damage to the ash conveying pipeline and silo pump. 2. When a fly ash hopper is full, it needs to be transported. Because the amount of ash in each ash hopper varies, the time it takes for the hopper to fill varies. When one of the multiple hoppers connected in series is full, all the hoppers connected together need to be transported as a whole. If there are many hoppers connected in series, the transport efficiency decreases; moreover, the number of potential failure points on a single pipeline increases, reducing safety. Summary of the Invention

[0003] The purpose of this invention is to address the aforementioned shortcomings by providing a multi-compartment pump series-parallel hoisting system for dust collectors. This system solves the problems in existing technologies where multiple hopper pumps are connected in series through ash conveying pipelines, resulting in different thermal displacements in the ash hoppers, leading to deformation or even damage to the ash conveying pipelines or hopper pumps; and also addresses the low ash conveying efficiency. To achieve the above objective, this invention provides the following technical solution: A multi-compartment pump series-parallel hoisting system for a dust collector includes an ash conveying main pipe and several sets of ash conveying units. The sets of ash conveying units are respectively connected to the ash conveying main pipe for conveying fly ash from the sets of ash conveying units to the ash conveying main pipe, and then collecting and discharging it through the ash conveying main pipe. Each ash conveying unit includes an ash conveying pipe and several sets of ash conveying devices. The sets of ash conveying devices are connected in series through the ash conveying pipe. The end of the ash conveying pipe along the ash conveying direction is connected to the ash conveying main pipe. Each ash conveying device includes an ash receiving component and an ash conveying component. A compensation component is provided between the ash receiving component and the ash conveying component, or between the ash conveying component and the ash conveying pipe, for absorbing thermal displacement.

[0004] Furthermore, the ash receiving assembly includes an ash hopper, a square-round joint, and an ash discharge pipe; the bottom of the ash hopper is connected to the ash discharge pipe through the square-round joint; the ash discharge pipe is connected to the ash conveying assembly; and a manual slide valve is provided on the ash discharge pipe.

[0005] Furthermore, the ash conveying assembly includes a feed valve and a silo pump; the inlet end of the feed valve is connected to the ash discharge pipe, and the outlet end is connected to the silo pump; the silo pump is connected to the ash conveying pipeline, and after the fly ash enters the silo pump through the feed valve, it is conveyed along the ash conveying pipeline.

[0006] Furthermore, a pneumatic valve, an air supply device, and an elbow are sequentially provided between the end of the ash conveying pipeline and the ash conveying main pipe; the pneumatic valve is used to control the conveying of fly ash; the air supply device is used to provide pressure so that the fly ash can be smoothly conveyed at the elbow.

[0007] Furthermore, it also includes a maintenance platform; the maintenance platform is fixed by several sets of columns; the maintenance platform has several maintenance holes for the ash conveying device to pass through.

[0008] Furthermore, the compensation component is an expansion joint; both ends of the expansion joint are respectively connected to the ash discharge pipe and the feed valve.

[0009] Furthermore, the pump is equipped with horizontal connecting rods at both ends; a tie rod is vertically mounted on the connecting rod; the top of the tie rod is rigidly connected to the maintenance platform; the pump is hoisted through the maintenance platform, with a pre-reserved passage to the ground.

[0010] Furthermore, the compensation component is an expansion joint; the expansion joint is installed on the ash conveying pipe between two adjacent silo pumps.

[0011] Furthermore, the silo pump is equipped with horizontal connecting rods at both ends; a tie rod is vertically mounted on the connecting rod; the top of the tie rod is rigidly connected to the ash hopper; the silo pump is hoisted through the ash hopper, with a pre-reserved passage to the ground.

[0012] Furthermore, it also includes a controller; the controller is electrically connected to the silo pump, the air replenishment device, the feed valve and the pneumatic valve respectively, and is used to control the conveying of fly ash.

[0013] The beneficial effects of this invention are: The ash conveying hopper pump is rigidly connected and fixed to the dust collector ash hopper via tie rods. The hopper pump moves with the ash hopper due to thermal displacement. Expansion joints are installed on the ash conveying pipeline between every two hopper pumps. These expansion joints absorb axial and radial thermal displacement, eliminating the impact of the hopper pump's thermal displacement on the ash conveying pipeline. An expansion joint is installed between the ash hopper and the inlet of the silo pump. The ash conveying silo pump is rigidly connected and fixed to the maintenance platform by a tie rod. After the silo pump is fixed, it will not affect the thermal displacement of the ash conveying pipeline. The expansion joint has the function of absorbing axial and radial thermal displacement, absorbing the thermal displacement of the dust collector ash hopper, and eliminating the impact of the ash hopper thermal displacement on the silo pump and the ash conveying pipeline. Each electric field contains multiple silo pumps and ash conveying pipes connected in series to form a branch pipe, and the branch pipes of multiple electric fields are connected in parallel to form a main ash conveying pipe. Compared with the scheme where all silo pumps are connected in series to form a single ash conveying pipe, in this mode, each electric field is a group, and they are conveyed separately and sequentially, which improves the flexibility and reliability of the conveying process.

[0014] The silo pump and ash conveying pipeline are installed using a hoisting method, approximately 2 meters above the ground, allowing for normal access for personnel. Compared to a method where the silo pump and ash conveying pipeline are laid on the ground, this method provides better access and maintenance conditions. Attached Figure Description

[0015] Figure 1 This is a top view of the present invention; Figure 2 yes Figure 1 Enlarged view of point A in the middle; Figure 3 This is a front view of an embodiment where the expansion joint is located between the ash conveying assembly and the ash conveying pipe; Figure 4 yes Figure 3 Side view of the ash conveying device; Figure 5 This is a front view of an embodiment where the expansion joint is located between the ash receiving assembly and the ash conveying assembly; Figure 6 yes Figure 5 Side view of the ash conveying device; In the attached diagram: 1. Ash conveying main pipe; 2. Ash conveying pipeline; 3. Ash hopper; 4. Square-round joint; 5. Ash drop pipe; 6. Manual slide gate valve; 7. Feed valve; 8. Silo pump; 9. Pneumatic valve; 10. Air replenishment device; 11. Elbow; 12. Maintenance platform; 13. Expansion joint; 14. Tie rod. Detailed Implementation

[0016] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments, but the present invention is not limited to the following embodiments.

[0017] In the description of this invention, 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," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0018] In the description of this invention, "first feature" and "second feature" may include one or more of the features.

[0019] In the description of this invention, "a plurality of" means two or more.

[0020] In the description of this invention, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or it may include the first and second features not being in direct contact but being in contact through another feature between them.

[0021] In the description of this invention, the terms "above," "over," and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicating that the first feature is at a higher horizontal level than the second feature.

[0022] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," and "some examples" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0023] Example See attached Figures 1-6 This embodiment discloses a multi-compartment pump series-parallel hoisting system for a dust collector, including a main ash conveying pipe 1 and several sets of ash conveying units. All sets of ash conveying units are connected to the main ash conveying pipe 1, enabling centralized collection and unified discharge of fly ash from multiple ash conveying units. The main ash conveying pipe 1 can be made of wear-resistant material. One end is connected to subsequent fly ash storage or processing equipment, while the other end is closed to ensure that the fly ash is conveyed in a designated direction. Simultaneously, the main ash conveying pipe 1 is fixed to the top of the plant building by supports, maintaining a certain distance from the ground to avoid affecting the operation of other equipment and personnel passage within the plant building. The ash conveying units, as the core units for fly ash conveying, each set of ash conveying units corresponds to an electric field. Each set of ash conveying units includes an ash conveying pipe 2 and several sets of ash conveying devices. These ash conveying devices are connected in series through the ash conveying pipe 2 to form a single ash conveying branch pipe. The end of the ash conveying pipe 2 along the ash conveying direction is connected to the main ash conveying pipe 1, allowing the fly ash in a single ash conveying unit to be collected through the ash conveying pipe 2 and then uniformly discharged into the main ash conveying pipe 1. The ash conveying pipe 2 can also be made of wear-resistant material to extend its service life. When connected in series, the ash conveying pipes 2 of the two adjacent ash conveying devices are connected by flanges to ensure the sealing of the connection and prevent fly ash leakage.

[0024] In this embodiment, each ash conveying device includes an ash receiving component and an ash conveying component. The ash receiving component is used to receive the fly ash discharged from the dust collector ash hopper 3, and the ash conveying component is used to transport the fly ash received by the ash receiving component to the ash conveying pipeline 2. In order to eliminate the influence of thermal displacement on the equipment, a compensation component is provided between the ash receiving component and the ash conveying component or between the ash conveying component and the ash conveying pipeline 2. The compensation component can absorb the thermal displacement generated during the operation of the equipment, and prevent the ash conveying pipeline 2, the silo pump 8 and other components from deforming or even being damaged due to thermal expansion and contraction, so as to ensure the long-term stable operation of the system.

[0025] In this embodiment, the ash receiving assembly includes an ash hopper 3, a square-round joint 4, and an ash discharge pipe 5. The ash hopper 3 has a funnel-shaped structure, with its top connected to the ash discharge port of the dust collector to receive the fly ash collected by the dust collector. The inner wall of the ash hopper 3 is smooth to reduce the accumulation of fly ash in the ash hopper 3. The bottom of the ash hopper 3 is connected to the ash discharge pipe 5 through the square-round joint 4. The square-round joint 4 is used to adapt to the square outlet of the ash hopper 3 and the circular interface of the ash discharge pipe 5 to achieve a smooth connection between the two. The ash discharge pipe 5 is vertically arranged, with one end fixedly connected to the square-round joint 4 and the other end connected to the ash conveying assembly to guide the fly ash in the ash hopper 3 to the ash conveying assembly. The ash discharge pipe 5 is equipped with a manual slide valve 6. The manual slide valve 6 is operated manually and is normally in the open state. When it is necessary to inspect or maintain the ash conveying assembly, the manual slide valve 6 is closed to cut off the fly ash conveying channel, prevent the fly ash from continuing to fall, and ensure the safety and convenience of the maintenance process.

[0026] In this embodiment, the ash conveying assembly includes a feed valve 7 and a silo pump 8. The inlet end of the feed valve 7 is connected to the ash discharge pipe 5, and the outlet end is connected to the silo pump 8. The feed valve 7 is pneumatically controlled and can be quickly opened and closed to control the flow of fly ash from the ash discharge pipe 5 into the silo pump 8. The silo pump 8 serves as a temporary storage and conveying device for fly ash. Each set of ash conveying devices corresponds to one silo pump 8, and several sets of silo pumps 8 are connected in series through the ash conveying pipeline 2, allowing the fly ash to pass through each silo pump 8 sequentially and finally be conveyed to the end of the ash conveying pipeline 2. After the fly ash enters the silo pump 8 through the feed valve 7, it is conveyed along the ash conveying pipeline 2 by the power provided by compressed air. The compressed air is provided by an external air compressor and connected to the silo pump 8 through an air pipe to ensure sufficient pressure inside the silo pump 8 to drive the fly ash to flow smoothly.

[0027] In this embodiment, a pneumatic valve 9, an air supply device 10, and an elbow 11 are sequentially installed between the end of the ash conveying pipeline 2 and the ash conveying main pipe 1. These three components are connected by flanges to ensure the sealing and stability of the connection. The pneumatic valve 9 is electrically connected to the controller and is used to control the connection and disconnection between the ash conveying pipeline 2 and the ash conveying main pipe 1. When a certain group of ash conveying units needs to convey fly ash, the controller controls the corresponding pneumatic valve 9 to open, and the fly ash enters the ash conveying main pipe 1 through the ash conveying pipeline 2, the pneumatic valve 9, the air supply device 10, and the elbow 11. When the group of ash conveying units completes its conveying or malfunctions, the controller controls the pneumatic valve 9 to close, cutting off the connection between the ash conveying unit and the ash conveying main pipe 1 to avoid affecting the normal operation of other ash conveying units. The air supply device 10 is also electrically connected to the controller and is used to provide additional pressure when fly ash passes through the elbow 11. Since the pipeline route changes at the elbow 11, fly ash is prone to accumulate here. The air supply device 10 increases the airflow velocity at the elbow 11 by supplementing compressed air into the pipeline, so that the fly ash can pass through the elbow 11 smoothly, avoid blockage, and ensure the smoothness of the ash conveying process.

[0028] In this embodiment, the system also includes a maintenance platform 12, which is fixed to the factory floor by several sets of columns. The height of the maintenance platform 12 is designed to be approximately 2 meters above the ground, ensuring sufficient hoisting space for the silo pump 8 and the ash conveying pipe 2 while allowing for normal passage of personnel, avoiding the platform being too low and obstructing access. The maintenance platform 12 has several inspection holes, the number of which matches the number of ash conveying devices. Each inspection hole is slightly larger than the cross-sectional dimension of the ash conveying device, allowing it to pass through. Personnel can inspect, maintain, and replace components such as the ash conveying device and the ash conveying pipe 2 through these inspection holes on the maintenance platform 12 without disassembling the entire system, greatly improving maintenance efficiency and reducing maintenance costs.

[0029] In this embodiment, as Figures 5-6The compensation component uses an expansion joint 13, which has good axial and radial expansion capacity and can effectively absorb the thermal displacement generated during equipment operation. The expansion joint 13 is set between the ash discharge pipe 5 and the feed valve 7. The two ends of the expansion joint 13 are connected to the ash discharge pipe 5 and the feed valve 7 respectively through flanges to ensure the sealing of the connection. In this installation method, the ash conveying silo pump 8 is rigidly connected and fixed to the maintenance platform 12 through the tie rod 14. Specifically, the silo pump 8 has horizontal connecting rods at both ends. The connecting rods are made of steel and are welded and fixed to the silo pump 8. The tie rod 14 is vertically installed on the connecting rod. The tie rod 14 is made of high-strength steel and is welded and fixed to the maintenance platform 12 at the top end, realizing the rigid connection between the silo pump 8 and the maintenance platform 12, so that the silo pump 8 is fixed and does not affect the thermal displacement of the ash conveying pipe 2. At this time, the thermal displacement generated during the operation of the dust collector hopper 3 will be transferred to the expansion joint 13 through the ash discharge pipe 5. The expansion joint 13 absorbs the thermal displacement of the hopper 3 through its own expansion and contraction deformation, preventing the thermal displacement from being transferred to the silo pump 8 and the ash conveying pipe 2, preventing the silo pump 8 and the ash conveying pipe 2 from being damaged by deformation, cracking or other damage due to thermal displacement, and ensuring the stable operation of the system.

[0030] In other embodiments, such as Figures 3-4 The expansion joint 13 is installed on the ash conveying pipeline 2 between two adjacent silo pumps 8. Both ends of the expansion joint 13 are connected to the ash conveying pipeline 2 of the two adjacent silo pumps 8 through flanges to ensure no leakage during fly ash conveying. In this installation method, the ash conveying silo pump 8 is rigidly connected and fixed to the ash hopper 3 through the tie rod 14. Specifically, the silo pump 8 has horizontal connecting rods at both ends, which are welded and fixed to the silo pump 8. The tie rod 14 is vertically installed on the connecting rods, and the top of the tie rod 14 is welded and fixed to the ash hopper 3, realizing the rigid connection between the silo pump 8 and the ash hopper 3. This allows the silo pump 8 to generate thermal displacement together with the ash hopper 3. At this time, the thermal displacement difference between the two adjacent silo pumps 8 will be transmitted to the expansion joint 13 through the ash conveying pipeline 2. The expansion joint 13 absorbs the thermal displacement difference between the two silo pumps 8 through its own expansion and contraction deformation, eliminating the impact of the thermal displacement of the silo pump 8 on the ash conveying pipeline 2, and avoiding stress concentration in the ash conveying pipeline 2 due to thermal displacement, which could lead to pipeline deformation and damage. Meanwhile, an expansion joint 13 is also installed on the ash conveying pipe 2 between the ash conveying main pipe 1 and the nearest silo pump 8 to avoid thermal displacement affecting the ash conveying main pipe 1.

[0031] In this embodiment, a controller is also included. The controller can be a PLC controller, which is installed in the control room of the plant for easy operation and monitoring by staff. The controller is electrically connected to the silo pump 8, the air replenishment device 10, the feed valve 7 and the pneumatic valve 9 respectively. Through the preset control program, the automatic control of fly ash conveying is realized, thereby improving the conveying efficiency and reducing manual operation. The controller can monitor the material level in each silo pump 8 in real time. When the fly ash in a certain silo pump 8 reaches the preset full level, the controller controls the feed valve 7 on that silo pump 8 to close, and at the same time controls the external air compressor to introduce compressed air into the silo pump 8, pushing the fly ash in the silo pump 8 into the ash conveying pipeline 2. When the fly ash is conveyed to the end of the ash conveying pipeline 2, the controller controls the corresponding pneumatic valve 9 to open, and at the same time controls the air replenishment device 10 to start, replenishing compressed air to the elbow 11 to ensure that the fly ash passes smoothly through the elbow 11 into the ash conveying main pipe 1. When the fly ash in the silo pump 8 is completely conveyed and the material level reaches the preset empty level, the controller controls the feed valve 7 to open, and the pneumatic valve 9 and the air replenishment device 10 to close, completing one ash conveying cycle. Throughout the ash conveying process, the expansion joint 13 plays a crucial role. If the expansion joint 13 is installed between the ash discharge pipe 5 and the feed valve 7, the thermal displacement generated by the ash hopper 3 will be absorbed by the expansion joint 13, preventing it from being transmitted to the silo pump 8 and the ash conveying pipeline 2. If the expansion joint 13 is installed on the ash conveying pipeline 2 between adjacent silo pumps 8, the difference in thermal displacement generated by the silo pump 8 following the ash hopper 3 will be absorbed by the expansion joint 13, preventing deformation of the ash conveying pipeline 2. At the same time, the silo pump 8 is rigidly connected to the maintenance platform 12 or the ash hopper 3 via the tie rod 14 and is suspended at a position about 2m above the ground. Workers can pass normally on the ground and can also inspect and maintain the ash conveying device, ash conveying pipeline 2, and other components through the inspection holes on the maintenance platform 12, greatly improving maintenance and access conditions.

[0032] Since each ash conveying unit corresponds to an electric field, compared to the scheme where all the silo pumps 8 are connected in series to form a single ash conveying pipe 2, in this system, a single electric field is a group, which can be conveyed separately and sequentially. When a certain group of ash conveying units fails, the other ash conveying units can operate normally without affecting the overall ash conveying operation, thus improving the flexibility and reliability of the conveying. At the same time, the number of fault points on a single ash conveying pipe 2 is reduced, which lowers the probability of failure and further improves the safety of the system.

[0033] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the present invention, and all such modifications and substitutions should be covered within the scope of the claims of the present invention. Technical aspects, shapes, and structures not described in detail in this invention are all well-known technologies.

Claims

1. A series-parallel hoisting system for a multi-compartment pump in a dust collector, characterized in that: It includes a main ash conveying pipe (1) and several sets of ash conveying units; the several sets of ash conveying units are respectively connected to the main ash conveying pipe (1) for conveying the fly ash from the several sets of ash conveying units to the main ash conveying pipe (1), and then collecting and discharging it through the main ash conveying pipe (1); the ash conveying unit includes an ash conveying pipe (2) and several sets of ash conveying devices; Several sets of the ash conveying devices are connected in series through the ash conveying pipe (2); the end of the ash conveying pipe (2) along the ash conveying direction is connected to the ash conveying main pipe (1); the ash conveying device includes an ash receiving component and an ash conveying component; A compensation component is provided between the ash receiving component and the ash conveying component or between the ash conveying component and the ash conveying pipe (2) for absorbing thermal displacement.

2. The dust collector multi-compartment pump series-parallel hoisting system according to claim 1, characterized in that: The ash receiving assembly includes an ash hopper (3), a square-round joint (4), and an ash discharge pipe (5); the bottom of the ash hopper (3) is connected to the ash discharge pipe (5) through the square-round joint (4); the ash discharge pipe (5) is connected to the ash conveying assembly; and a manual slide valve (6) is provided on the ash discharge pipe (5).

3. A series-parallel hoisting system for a multi-compartment pump in a dust collector according to claim 2, characterized in that: The ash conveying assembly includes a feed valve (7) and a silo pump (8); the inlet end of the feed valve (7) is connected to the ash discharge pipe (5), and the outlet end is connected to the silo pump (8); the silo pump (8) is connected to the ash conveying pipeline (2), and after the fly ash enters the silo pump (8) through the feed valve (7), it is conveyed along the ash conveying pipeline (2).

4. A series-parallel hoisting system for a multi-compartment pump in a dust collector according to claim 3, characterized in that: The end of the ash conveying pipe (2) is connected to the ash conveying main pipe (1) by a pneumatic valve (9), an air replenishment device (10) and an elbow (11) in sequence; the pneumatic valve (9) is used to control the conveying of fly ash; the air replenishment device (10) is used to provide pressure so that fly ash can be conveyed smoothly at the elbow (11).

5. A series-parallel hoisting system for a multi-compartment pump in a dust collector according to claim 3, characterized in that: It also includes a maintenance platform (12); the maintenance platform (12) is fixed by several sets of columns; the maintenance platform (12) has several maintenance holes for the ash conveying device to pass through.

6. A series-parallel hoisting system for a multi-compartment pump in a dust collector according to claim 5, characterized in that: The compensation component is an expansion joint (13); the two ends of the expansion joint (13) are respectively connected to the ash discharge pipe (5) and the feed valve (7).

7. A series-parallel hoisting system for a multi-compartment pump in a dust collector according to claim 6, characterized in that: The silo pump (8) has horizontal connecting rods at both ends; the connecting rods have vertical tie rods (14); the top of the tie rods (14) is rigidly connected to the maintenance platform (12); the silo pump (8) is hoisted through the maintenance platform (12) and a passage is reserved on the ground.

8. A series-parallel hoisting system for a multi-compartment pump in a dust collector according to claim 3, characterized in that: The compensation component is an expansion joint (13); the expansion joint (13) is installed on the ash conveying pipe (2) between two adjacent silo pumps (8).

9. A series-parallel hoisting system for a multi-compartment pump in a dust collector according to claim 8, characterized in that: The silo pump (8) has horizontal connecting rods at both ends; the connecting rods have vertical pull rods (14); the top of the pull rods (14) is rigidly connected to the ash hopper (3); the silo pump (8) is hoisted through the ash hopper (3) and a passage is reserved with the ground.

10. A multi-compartment pump series-parallel hoisting system for a dust collector according to claim 4, characterized in that: It also includes a controller; the controller is electrically connected to the silo pump (8), the air replenishment device (10), the feed valve (7) and the pneumatic valve (9) respectively, and is used to control the conveying of fly ash.

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