Anti-blocking equipment and system

Abstract

The embodiment of the invention provides anti-blocking equipment and a system. The anti-blocking equipment comprises a feeding assembly, a blanking pipeline, a material mixing assembly and an unblocking device, the unblocking device comprises a sensor located in the material mixing assembly, an isolation door assembly electrically connected with the sensor and located outside the blanking pipeline, and an unblocking execution unit; an opening penetrating through the thickness direction of the blanking pipeline is formed in the side wall of the blanking pipeline, the isolation door assembly is correspondingly arranged at the opening, and the unblocking execution unit is located on the side, away from the blanking pipeline, of the isolation door assembly; the unblocking execution unit comprises a driving wheel, a first driven wheel, a second driven wheel and a third driven wheel which are arranged in sequence and define a rectangle, the driving wheel, the first driven wheel, the second driven wheel and the third driven wheel are connected through a linkage belt surrounding the driving wheel, the first driven wheel, the second driven wheel and the third driven wheel, and an unblocking assembly parallel to the radial direction of the blanking pipeline is fixedly connected to the linkage belt. According to the anti-blocking equipment disclosed by the embodiment of the invention, the problem of blocking in the blanking pipeline can be effectively solved.

Description

Technical Field

[0001] The embodiments disclosed herein belong to the field of generator set technology, specifically relating to an anti-blocking device and system. Background Technology

[0002] Biomass direct combustion coupled with coal-fired power generation technology, as a novel technology route for the efficient and large-scale utilization of biomass, has become an important development direction for achieving carbon emission reduction in the thermal power generation industry due to its advantages such as zero carbon emissions, simple technical solutions, and low equipment investment costs. Biomass feedstock, as an alternative fuel for coupled coal-fired power generating units, is characterized by its wide availability, diverse forms, and significant differences in transport performance. The stable and reliable operation of its feeding system is of great importance to the overall safe and stable operation of the power generating unit.

[0003] However, when biomass feedstock needs to be crushed to below 10mm before being conveyed by air or flue gas into the burner nozzles of a coal-fired boiler for co-firing, the flowability of fine biomass particles below 10mm deteriorates significantly, especially when the moisture content is high, easily leading to arching and blockage in the conveying pipeline. Furthermore, because pneumatic conveying is used, the silo outlet is directly connected to the pipeline, which is under positive pressure. Therefore, ensuring a stable and continuous conveying of fine biomass particles, effectively solving the problem of localized blockage in the pipeline, and guaranteeing the effectiveness of biomass fuel co-firing and the safe and stable operation of the unit are urgent issues that need to be addressed. Summary of the Invention

[0004] The embodiments disclosed herein are intended to at least address one of the technical problems existing in the prior art, and to provide an anti-blocking device and system.

[0005] On one hand, embodiments of this disclosure provide an anti-clogging device, which includes a feeding assembly for receiving materials, a material mixing assembly connected to the feeding assembly via a discharge pipe, and an anti-clogging device; the anti-clogging device includes a sensor located within the material mixing assembly, an isolation gate assembly electrically connected to the sensor and located outside the discharge pipe, and an anti-clogging execution unit; The side wall of the material discharge pipe has an opening extending through its thickness. The isolation gate assembly is correspondingly positioned at this opening, and the unblocking execution unit is located on the side of the isolation gate assembly facing away from the material discharge pipe. The unblocking execution unit includes a driving wheel, a first driven wheel, a second driven wheel, and a third driven wheel arranged sequentially and forming a rectangle. These three wheels are connected by a linkage belt surrounding them. An unblocking assembly parallel to the radial direction of the material discharge pipe is fixed to the linkage belt. When the sensor detects an interruption or discontinuity in the pressure signal within the material mixing assembly, the isolation door assembly is activated to open the opening in the side wall of the material discharge pipe, and the drive wheel is activated to drive the linkage belt to move. The linkage belt then drives the unblocking assembly to reciprocate along the path formed by the drive wheel, the first driven wheel, the second driven wheel, and the third driven wheel, thereby unblocking the material discharge pipe.

[0006] Optionally, the length of the rectangle formed by the driving wheel, the first driven wheel, the second driven wheel, and the third driven wheel is parallel to the radial direction of the discharge pipe, and the height is parallel to the axial direction of the discharge pipe.

[0007] Optionally, the anti-blocking device further includes an outer protective cover, wherein the driving wheel, the first driven wheel, the second driven wheel, the third driven wheel and the linkage belt are all located inside the outer protective cover, and the side of the outer protective cover near the material discharge pipe is connected to the material discharge pipe through the isolation door assembly; in the initial state, the anti-blocking component is located inside the outer protective cover and is in the first position; When the sensor detects that the pressure signal in the material mixing assembly is interrupted or discontinuous, the unblocking assembly unblocks the material discharge pipe; when the sensor detects that the pressure signal in the material mixing assembly is continuous and stable, the drive wheel drives the unblocking assembly to the first position, and the isolation door assembly closes.

[0008] Optionally, the unblocking assembly includes a cleaning robotic arm with a first end fixed to the linkage belt by fixing bolts and a second end provided with an unblocking component; and, in the initial state, the axes of the unblocking component and the cleaning robotic arm are both parallel to the radial direction of the discharge pipe.

[0009] Optionally, the isolation door assembly includes an isolation door and an isolation door motor that drives the isolation door to open and close and is electrically connected to the sensor; wherein, The isolation door motor is located outside the outer protective cover. The isolation door passes through the outer protective cover and is used to separate the material discharge pipe from the driving wheel, the first driven wheel, the second driven wheel, and the third driven wheel, which form a rectangle.

[0010] Optionally, the anti-clogging device further includes a receiving hopper connected to the bottom of the outer cover, and the outlet of the receiving hopper is connected to the inlet of the feeding assembly through a conveying pipe connected in series with a feeding fan.

[0011] Optionally, the feeding assembly includes a biomass silo and a feeder; The inlet of the biomass silo is connected to the outlet of the receiving hopper, and the outlet of the biomass silo is connected to the inlet of the discharge pipe via a feeder.

[0012] Optionally, the material mixing assembly includes an intermediate hopper, a rotary feeder, and a material mixer; The inlet of the intermediate silo is connected to the outlet of the discharge pipe, and the outlet of the intermediate silo is connected to the inlet of the material mixer through the rotary feeder.

[0013] Optionally, the anti-blocking device further includes an isolation component disposed inside the outer protective cover, the isolation component being sandwiched between the linkage belt and the isolation door assembly.

[0014] On the other hand, embodiments of this disclosure also provide an anti-clogging system employing the anti-clogging device described above; and the outlet of the material mixing component is connected to the burner nozzle of a coal-fired boiler.

[0015] The anti-clogging device and system of this disclosure, through its feeding assembly, discharge pipe, material mixing assembly, and unblocking device, can flexibly solve the problem of biomass material blockage in the discharge pipe. Furthermore, by designing sensors to monitor the conveying status of the biomass material in real time, and designing automatic feedback control based on the status monitoring, the entire set of equipment can be automated. The equipment is simple and reliable overall, with a significant anti-clogging effect, effectively reducing the risk of blockage during biomass material conveying and improving operational safety and stability. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of an anti-blocking device in its initial state according to an embodiment of the present disclosure; Figure 2 This is a schematic diagram of the state of an anti-blocking device during unblocking, according to another embodiment of this disclosure. Detailed Implementation

[0017] To enable those skilled in the art to better understand the technical solutions of this disclosure, the disclosure will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0018] like Figure 1 and Figure 2 As shown, an anti-clogging device 100 includes a feeding assembly 110 for receiving materials, a material mixing assembly 130 connected to the feeding assembly 110 via a discharge pipe 120, and an anti-clogging device 140. The anti-clogging device 140 includes a sensor 141 located within the material mixing assembly 130, an isolation gate assembly 150 electrically connected to the sensor 141 and located outside the discharge pipe 120, and an anti-clogging execution unit.

[0019] The side wall of the material discharge pipe 120 has an opening extending through its thickness. The isolation door assembly 150 is correspondingly disposed at this opening, and the unblocking execution unit is located on the side of the isolation door assembly 150 opposite to the material discharge pipe 120. The unblocking execution unit includes a driving wheel 142, a first driven wheel 143, a second driven wheel 144, and a third driven wheel 145 arranged sequentially and forming a rectangle. These three wheels are connected by a linkage belt 146 surrounding them. An unblocking assembly 160, parallel to the radial direction of the material discharge pipe 120, is fixedly connected to the linkage belt 146. When the sensor 141 detects an interruption or discontinuity in the pressure signal within the material mixing assembly 130, the isolation door assembly 150 is activated to open the opening in the side wall of the material discharge pipe 120, and the drive wheel 142 is activated to drive the linkage belt 146 to move. The linkage belt 146 drives the unblocking assembly 160 to reciprocate along the path formed by the drive wheel 142, the first driven wheel 143, the second driven wheel 144, and the third driven wheel 145, thereby unblocking the material discharge pipe 120.

[0020] Specifically, such as Figure 1 and Figure 2 As shown, the feeding assembly 110 is used to receive materials, specifically fine biomass pellets with a diameter of less than 10 mm. The material flows out of the feeding assembly 110 and through the discharge pipe 120 into the material mixing assembly 130, and is ultimately conveyed by the material mixing assembly 130 to the burner nozzle of the coal-fired boiler. During actual operation, the sensor 141 is responsible for real-time monitoring of the pressure signal within the material mixing assembly 130. When the pressure signal is continuous and stable, it indicates that the material is flowing and falling normally. When sensor 141 detects an interruption or discontinuity in the pressure signal within the material mixing assembly 130, it indicates a blockage in the discharge pipe 120. At this time, the isolation gate assembly 150 is activated to open the side wall opening of the discharge pipe 120. The drive wheel 142 is activated to drive the linkage belt 146 to move. The linkage belt 146 drives the unblocking assembly 160 to reciprocate along the path formed by the drive wheel 142, the first driven wheel 143, the second driven wheel 144, and the third driven wheel 145. During the process of the unblocking assembly 160 entering and moving in the discharge pipe 120, it can clear the blockage material in the discharge pipe 120.

[0021] The anti-clogging device of this disclosure, through its feeding assembly, discharge pipe, material mixing assembly, and unblocking device, can flexibly solve the problem of biomass material blockage in the discharge pipe. Furthermore, by designing sensors to monitor the conveying status of the biomass material in real time, and designing automatic feedback control based on the status monitoring, the entire set of equipment can be automated. The equipment is simple and reliable, with a significant anti-clogging effect, effectively reducing the risk of blockage during biomass material conveying and improving operational safety and stability.

[0022] For example, such as Figure 1 and Figure 2 As shown, the length of the rectangle formed by the driving wheel 142, the first driven wheel 143, the second driven wheel 144 and the third driven wheel 145 is parallel to the radial direction of the discharge pipe 120, and the height is parallel to the axial direction of the discharge pipe 120.

[0023] Furthermore, the anti-clogging device 100 also includes an outer protective cover 170. The driving wheel 142, the first driven wheel 143, the second driven wheel 144, the third driven wheel 145, and the linkage belt 146 are all located inside the outer protective cover 170. The side of the outer protective cover 170 closest to the material discharge pipe 120 is connected to the material discharge pipe 120 through the isolation door assembly 150. In the initial state, the unblocking assembly 160 is located inside the outer protective cover 170 and is in the first position. When the sensor 141 detects that the pressure signal in the material mixing assembly 130 is interrupted or discontinuous, the unblocking assembly 160 unblocks the material discharge pipe 120. When the sensor 141 detects that the pressure signal in the material mixing assembly 130 is continuous and stable, the driving wheel 142 drives the unblocking assembly 160 to the first position, and the isolation door assembly 150 closes.

[0024] Furthermore, the isolation door assembly 150 includes an isolation door 151 and an isolation door motor 152 that drives the isolation door 151 to open and close and is electrically connected to the sensor 141. The isolation door motor 152 is located outside the outer protective cover 170, and the isolation door 151 passes through the outer protective cover 170 and serves to separate the material discharge pipe 120 from the rectangularly arranged drive wheel 142, first driven wheel 143, second driven wheel 144, and third driven wheel 145.

[0025] Specifically, such as Figure 1 and Figure 2As shown, in the initial state, the unblocking component 160 is located inside the outer cover 170 and in the first position. When the sensor 141 detects an interruption or discontinuity in the pressure signal within the material mixing component 130, the isolation door motor 152 actuates to drive the isolation door 151 to open upwards. At this time, the unblocking component 160, in its initial position, operates via the drive wheel 142 and drives the cleaning robotic arm 162 to move via the linkage belt 146. Part of the cleaning robotic arm 162 and the unblocking component 161 enter the discharge pipe 120 to clear the blockage material. The unblocking component 160 reciprocates along the path formed by the drive wheel 142, the first driven wheel 143, the second driven wheel 144, and the third driven wheel 145 to clear the blockage material in the discharge pipe 120. With the operation of the unblocking component 160, the biomass material resumes normal flow. After the sensor 141 detects a continuous and stable pressure signal again, the drive wheel 142 drives the unblocking component 160 to the first position in the initial state and returns to the inside of the outer cover 170 through the discharge pipe 120. The isolation door motor 152 controls the isolation door 151 to close downward.

[0026] The unblocking assembly 160 includes a cleaning robotic arm 162 with one end fixed to the linkage belt 146 by fixing bolts and the other end equipped with an unblocking component 161. Furthermore, in the initial state, the axes of both the unblocking component 161 and the cleaning robotic arm 162 are parallel to the radial direction of the discharge pipe 120. It is easy to understand that... Figure 1 and Figure 2 As shown, the lengths of the unblocking component 161 and the cleaning robotic arm 162 can be set according to actual needs, and this disclosure does not impose specific limitations on them.

[0027] For example, such as Figure 1 and Figure 2 As shown, the anti-clogging device 100 also includes a receiving hopper 180 connected to the bottom of the outer protective cover 170. The outlet of the receiving hopper 180 is connected to the inlet of the feeding assembly 110 via a conveying pipe 182 connected in series with a feeding fan 181. The feeding assembly 110 includes a biomass silo 111 and a feeder 112. The inlet of the biomass silo 111 is connected to the outlet of the receiving hopper 180, and the outlet of the biomass silo 111 is connected to the inlet of the discharge pipe 120 via the feeder 112.

[0028] Specifically, when the isolation door 151 is opened for unblocking, some material will enter the outer cover 170 through the discharge pipe 120. The material entering the outer cover 170 flows downward and accumulates in the receiving hopper 180. When the isolation door 151 is closed, the feeding fan 181 starts to send the material in the receiving hopper 180 back to the biomass silo 111 through the conveying pipe 182 to achieve the recycling of biomass materials. Of course, when the isolation door 151 is not open, the biomass silo 111 receives external materials, which are conveyed to the discharge pipe 120 through the feeder 112 and fall into the material mixing assembly 130 through the discharge pipe 120.

[0029] Furthermore, the material mixing assembly 130 includes an intermediate hopper 131, a rotary feeder 132, and a material mixer 133. The inlet of the intermediate hopper 131 is connected to the outlet of the discharge pipe 120, and the outlet of the intermediate hopper 131 is connected to the inlet of the material mixer 133 through the rotary feeder 132.

[0030] Specifically, such as Figure 1 and Figure 2 As shown, the material in the discharge pipe 120 enters the intermediate silo 131, and under the action of the rotary feeder 132, it enters the material mixer 133, and finally enters the burner nozzle of the coal-fired boiler from the material mixer 133.

[0031] For example, such as Figure 1 and Figure 2 As shown, the anti-blocking device 100 also includes an isolating member 171 disposed inside the outer protective cover 170, the isolating member 171 being sandwiched between the linkage belt 146 and the isolation door assembly 150. The isolating member 171 further separates the material from the linkage belt 146 when the material enters the outer protective cover 170, preventing the material from falling onto the linkage belt 146 and affecting its normal rotation. Simultaneously, the isolating member 171 also better promotes the downward flow and accumulation of material entering the outer protective cover 170 within the receiving hopper 180.

[0032] On the other hand, embodiments of this disclosure provide an anti-clogging system that employs the anti-clogging device described above. The specific structure of the anti-clogging device can be found in the preceding descriptions and will not be elaborated upon here. Furthermore, the outlet of the material mixing component is connected to the burner nozzle of a coal-fired boiler.

[0033] It is understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of this disclosure, and this disclosure is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and substance of this disclosure, and these modifications and improvements are also considered to be within the scope of protection of this disclosure.

Claims

1. An anti-clogging device, characterized in that, The anti-blocking device includes a feeding assembly for receiving materials, a material mixing assembly connected to the feeding assembly via a discharge pipe, and a blockage clearing device; the blockage clearing device includes a sensor located inside the material mixing assembly, an isolation door assembly electrically connected to the sensor and located outside the discharge pipe, and a blockage clearing execution unit; The side wall of the material discharge pipe has an opening extending through its thickness. The isolation gate assembly is correspondingly positioned at this opening, and the unblocking execution unit is located on the side of the isolation gate assembly facing away from the material discharge pipe. The unblocking execution unit includes a driving wheel, a first driven wheel, a second driven wheel, and a third driven wheel arranged sequentially and forming a rectangle. These three wheels are connected by a linkage belt surrounding them. An unblocking assembly parallel to the radial direction of the material discharge pipe is fixed to the linkage belt. When the sensor detects an interruption or discontinuity in the pressure signal within the material mixing assembly, the isolation door assembly is activated to open the opening in the side wall of the material discharge pipe, and the drive wheel is activated to drive the linkage belt to move. The linkage belt then drives the unblocking assembly to reciprocate along the path formed by the drive wheel, the first driven wheel, the second driven wheel, and the third driven wheel, thereby unblocking the material discharge pipe.

2. The anti-clogging device according to claim 1, characterized in that, The length of the rectangle formed by the driving wheel, the first driven wheel, the second driven wheel, and the third driven wheel is parallel to the radial direction of the material discharge pipe, and the height direction is parallel to the axial direction of the material discharge pipe.

3. The anti-clogging device according to claim 2, characterized in that, The anti-blocking device also includes an outer protective cover. The driving wheel, the first driven wheel, the second driven wheel, the third driven wheel, and the linkage belt are all located inside the outer protective cover. The side of the outer protective cover closest to the material discharge pipe is connected to the material discharge pipe through the isolation door assembly. In the initial state, the anti-blocking component is located inside the outer protective cover and is in the first position. When the sensor detects that the pressure signal in the material mixing assembly is interrupted or discontinuous, the unblocking assembly unblocks the material discharge pipe; when the sensor detects that the pressure signal in the material mixing assembly is continuous and stable, the drive wheel drives the unblocking assembly to the first position, and the isolation door assembly closes.

4. The anti-clogging device according to claim 3, characterized in that, The unblocking assembly includes a cleaning robotic arm with one end fixed to the linkage belt by fixing bolts and the other end equipped with an unblocking component; and, in the initial state, the axes of the unblocking component and the cleaning robotic arm are both parallel to the radial direction of the material discharge pipe.

5. The anti-clogging device according to claim 3, characterized in that, The isolation door assembly includes an isolation door and an isolation door motor that drives the isolation door to open and close and is electrically connected to the sensor; wherein... The isolation door motor is located outside the outer protective cover. The isolation door passes through the outer protective cover and is used to separate the material discharge pipe from the driving wheel, the first driven wheel, the second driven wheel, and the third driven wheel, which form a rectangle.

6. The anti-clogging device according to claim 5, characterized in that, The anti-clogging device also includes a receiving hopper connected to the bottom of the outer cover, and the outlet of the receiving hopper is connected to the inlet of the feeding assembly through a conveying pipe connected in series with a feeding fan.

7. The anti-clogging device according to claim 6, characterized in that, The feeding assembly includes a biomass silo and a feeder; The inlet of the biomass silo is connected to the outlet of the receiving hopper, and the outlet of the biomass silo is connected to the inlet of the discharge pipe via a feeder.

8. The anti-clogging device according to claim 7, characterized in that, The material mixing assembly includes an intermediate hopper, a rotary feeder, and a material mixer; The inlet of the intermediate silo is connected to the outlet of the discharge pipe, and the outlet of the intermediate silo is connected to the inlet of the material mixer through the rotary feeder.

9. The anti-clogging device according to claim 3, characterized in that, The anti-blocking device also includes an isolation component located inside the outer protective cover, which is sandwiched between the linkage belt and the isolation door assembly.

10. An anti-blocking system, characterized in that, The anti-clogging system employs the anti-clogging device according to any one of claims 1 to 9; and the outlet of the material mixing component is connected to the burner nozzle of the coal-fired boiler.

Images