Blockage monitoring system for conveying pipeline and conveying pipeline

Abstract

The invention provides a material blocking monitoring system for a conveying pipeline and the conveying pipeline, and relates to the technical field of material blocking monitoring, the material blocking monitoring system comprises a shell, a rotating shaft, a baffle, a first monitoring part and a second monitoring part, the shell is suitable for being connected with the outer side of a pipe body of the conveying pipeline, and the shell is provided with a containing cavity with an opening facing the conveying pipeline; the rotating shaft is arranged on the shell and can rotate relative to the shell, and the baffle is connected with the rotating shaft and arranged in the containing cavity to shield at least part of the opening of the containing cavity; the first monitoring piece is arranged on the outer side of the shell to monitor the rotation condition of the rotating shaft; the second monitoring part is used for monitoring the current condition of a conveying chain driver of the conveying pipeline. The pressure of the conveying pipeline and the current of the conveying chain driver can be monitored at the same time so as to effectively diagnose the material blocking condition, and the method is real-time and accurate and low in misjudgment rate.

Description

Technical Field

[0001] The present invention relates to the technical field of blockage monitoring, and in particular to a blockage monitoring system for a conveying pipeline and a conveying pipeline. Background Art

[0002] During the process of transporting materials in the horizontal flue of a waste incineration plant, blockage of materials often occurs, and it is necessary to detect and clean the blockage in time to ensure the normal transportation of materials.

[0003] In the related art, there are mainly two ways to judge whether the conveying pipeline is blocked. One way is that the operator determines that there may be a blockage in the pipeline according to a significant increase in the motor power of the material conveying chain. The other way is to regularly conduct on-site inspections and judge the blockage situation of the pipeline based on experience. However, both of the above two ways rely on the operator's experience to determine the blockage situation of the pipeline, resulting in a high misjudgment rate and seriously affecting production efficiency. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems in the related art to some extent.

[0005] To this end, an embodiment of one aspect of the present invention provides a blockage monitoring system for a conveying pipeline. The blockage monitoring system for the conveying pipeline can simultaneously monitor the pressure of the conveying pipeline and the current of the conveying chain driver to effectively judge the blockage situation, which is instant, accurate, and has a low misjudgment rate.

[0006] An embodiment of another aspect of the present invention provides a conveying pipeline.

[0007] A blockage monitoring system for a conveying pipeline according to an embodiment of the present invention includes a housing, a rotating shaft, a baffle, a first monitoring member, and a second monitoring member. The housing is adapted to be connected to the outer side of the pipe body of the conveying pipeline. The housing has a receiving cavity facing the open end of the conveying pipeline. The rotating shaft is provided in the housing and is rotatable relative to the housing. The baffle is connected to the rotating shaft and is arranged in the receiving cavity to block at least part of the open end of the receiving cavity. The first monitoring member is arranged outside the housing to monitor the rotation of the rotating shaft. The second monitoring member is used to monitor the current situation of the conveying chain driver of the conveying pipeline.

[0008] The material blockage monitoring system for a conveying pipeline according to an embodiment of the present invention is composed of a housing, a rotating shaft, and a baffle plate cooperating with each other to form a pressure testing device for the inner cavity of the pipeline on the outer side of the pipe body of the conveying pipeline. Among them, the pipe body communicates with the accommodating cavity. After the housing is installed on the outer side of the pipe body, if the material in the pipe body accumulates, the accumulated material will exert pressure on the wall surface of the pipe body and push the baffle plate when blockage occurs, causing the baffle plate to drive the rotating shaft to rotate. At this time, the first monitoring member can monitor whether the rotating shaft rotates, and at the same time, in combination with the second monitoring member's real-time monitoring of the current of the conveying chain driver, based on the two parameter information obtained, that is, the rotation information of the rotating shaft and the current information, comprehensive analysis is carried out to determine whether blockage occurs in the conveying pipeline, so as to minimize the misjudgment rate and achieve reliable monitoring of material blockage. Therefore, compared with the related art, the present invention can monitor the pressure of the conveying pipeline and the current of the conveying chain driver at the same time to effectively judge the blockage situation, which is instant, accurate, and has a low misjudgment rate.

[0009] In some embodiments, one end of the baffle plate facing away from the rotating shaft is movably connected to the outer side of the pipe body of the conveying pipeline.

[0010] In some embodiments, the material blockage monitoring system further includes an elastic member. The elastic member is located at one end of the baffle plate facing away from the rotating shaft, and the elastic member is adapted to be clamped between the baffle plate and the pipe body of the conveying pipeline to push and pull the baffle plate closer to or away from the pipe body of the conveying pipeline.

[0011] In some embodiments, the material blockage monitoring system further includes an extension plate. The extension plate is connected to and in surface contact with the side surface of the baffle plate facing away from the open end of the accommodating cavity, and the rotating shaft is connected to the side of the extension plate facing away from the baffle plate.

[0012] In some embodiments, at least part of the rotating shaft located in the accommodating cavity is blocked by the baffle plate.

[0013] In some embodiments, the material blockage monitoring system further includes an elastic sealing member. The elastic sealing member is arranged at the edge of the baffle plate, and one end of the elastic sealing member facing away from the baffle plate abuts against the inner peripheral surface of the accommodating cavity to seal the open end of the accommodating cavity.

[0014] In some embodiments, the housing is further provided with a cleaning port opposite to the open end of the accommodating cavity. The cleaning port communicates with the accommodating cavity. The material blockage monitoring system further includes a cover plate. The cover plate is detachably connected to the housing and covers the cleaning port.

[0015] In some embodiments, the material blockage monitoring system further includes a pressure rod. The pressure rod presses against the side of the cover plate facing away from the cleaning port, and the pressure rod is detachably connected to the housing.

[0016] In some embodiments, the material blockage monitoring system further includes a bushing sleeved on the pressure rod. A handle is provided on a side of the cover plate facing away from the cleaning port, and the bushing is movably connected to the handle along the extending direction of the handle.

[0017] In some embodiments, the rotating shaft includes a body portion and an extension portion connected to each other. The body portion is connected to the housing and the baffle, and the extension portion is located outside the housing.

[0018] The first monitoring member includes a trigger switch and a contact. The trigger switch is provided outside the housing and adjacent to the extension portion, and the contact is provided on the extension portion. When the rotating shaft rotates to a set position, the contact is electrically connected to the trigger switch.

[0019] A conveying pipeline according to an embodiment of the present invention includes a pipe body and a material blockage monitoring system. The pipe body is provided with an opening; the material blockage monitoring system is the material blockage monitoring system described in any of the above embodiments. The housing of the material blockage monitoring system is connected to the outside of the pipe body to cover the opening of the pipe body, and the opening of the accommodating cavity is communicated with the opening of the pipe body.

[0020] For the conveying pipeline according to the embodiment of the present invention, the material blockage monitoring system is designed to judge whether there is material blockage by monitoring the pressure of the material on the side wall of the pipe body and the current of the conveying chain driver, which is instant and accurate. Therefore, compared with the related art, the conveying pipeline adopting the material blockage monitoring system can realize real-time monitoring of material blockage, with a low misjudgment rate and improved production efficiency.

[0021] In some embodiments, the opening of the accommodating cavity has a first installation end, and the first installation end is connected to the pipe wall of the pipe body to form a connection portion. The opening of the pipe body has a first edge adjacent to the connection portion.

[0022] The pipe body is further provided with a shielding portion, and the shielding portion extends from the connection portion along the extending direction of the pipe body and extends to the first edge. The shielding portion is used to shield a part of the baffle facing away from the rotating shaft.

[0023] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic structural diagram of a material blockage monitoring system for a conveying pipeline according to an embodiment of the present invention (the second monitoring member is not shown in the figure).

[0025] Figure 2It is a control relationship block diagram of a first monitoring member, a second monitoring member, and a main control unit in a blockage monitoring system for a conveying pipeline according to an embodiment of the present invention.

[0026] Figure 3 It is a schematic cross-sectional structure diagram of a blockage monitoring system for a conveying pipeline according to an embodiment of the present invention.

[0027] Figure 4 It is a schematic structural diagram of a rotating shaft in a blockage monitoring system for a conveying pipeline according to an embodiment of the present invention.

[0028] Figure 5 It is a schematic cross-sectional structure diagram of a conveying pipeline according to an embodiment of the present invention.

[0029] Reference numerals:

[0030] 10, conveying pipeline;

[0031] 100, blockage monitoring system;

[0032] 200, pipe body;

[0033] 1, housing; 11, accommodation cavity; 111, first mounting end; 12, bearing seat; 13, cleaning port; 14, fixing block;

[0034] 2, rotating shaft; 21, body part; 22, extension part;

[0035] 3, baffle; 31, cavity;

[0036] 4, first monitoring member; 41, trigger switch; 42, contact;

[0037] 5, second monitoring member;

[0038] 6, elastic member;

[0039] 7, extension plate;

[0040] 8, elastic seal;

[0041] 91, cover plate; 911, first plate body; 912, second plate body; 913, handle; 92, pressing rod; 93, bushing; 931, supporting rod; 94, opening; 941, first edge; 95, connection part; 96, shielding part. Detailed implementation manners

[0042] The embodiments of the present invention will be described in detail below, and the examples of the embodiments are shown in the drawings. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0043] As Figures 1 to 3As shown in the figure, a material blockage monitoring system 100 for a conveying pipeline according to an embodiment of the present invention includes a housing 1, a rotating shaft 2, a baffle 3, a first monitoring member 4, and a second monitoring member 5. The housing 1 is adapted to be connected to the outer side of the pipe body 200 of the conveying pipeline 10. The housing 1 has a receiving cavity 11 that is open towards the conveying pipeline 10. The rotating shaft 2 is provided in the housing 1 and is rotatable relative to the housing 1. The baffle 3 is connected to the rotating shaft 2 and is arranged in the receiving cavity 11 to block at least part of the opening of the receiving cavity 11. The first monitoring member 4 is arranged outside the housing 1 to monitor the rotation of the rotating shaft 2. The second monitoring member 5 is used to monitor the current condition of the conveying chain driver of the conveying pipeline 10.

[0044] In the material blockage monitoring system 100 for a conveying pipeline according to an embodiment of the present invention, the housing 1, the rotating shaft 2, and the baffle 3 cooperate to form a pressure testing device for the inner cavity of the pipe body 200 on the outer side of the pipe body 200 of the conveying pipeline 10. Among them, the pipe body 200 is communicated with the receiving cavity 11. After the housing 1 is installed on the outer side of the pipe body 200, if materials accumulate in the pipe body 200, the accumulated materials will exert pressure on the wall surface of the pipe body 200 and push the baffle 3 when blockage occurs, causing the baffle 3 to drive the rotating shaft 2 to rotate. At this time, the first monitoring member 4 can monitor whether the rotating shaft 2 rotates. At the same time, combined with the real-time monitoring of the current of the conveying chain driver by the second monitoring member 5, based on the two parameter information obtained, that is, the rotation information of the rotating shaft 2 and the current information, comprehensive analysis is carried out to determine whether blockage occurs in the conveying pipeline 10, so as to minimize the misjudgment rate and realize reliable monitoring of material blockage. Therefore, compared with the related art, the present invention can monitor the pressure of the conveying pipeline 10 and the current of the conveying chain driver at the same time to effectively judge the blockage situation, which is instant, accurate, and has a low misjudgment rate.

[0045] Specifically, the material blockage monitoring system 100 may further include a main control unit, which is electrically connected to the first monitoring member 4 and the second monitoring member 5, so that the main control unit receives the feedback information of the first monitoring member 4 and the second monitoring member 5 to realize real-time remote monitoring of the blockage situation of the conveying pipeline 10 and further optimize the automation performance of the material blockage monitoring system 100.

[0046] Taking the figure as an example, for instance, a bearing seat 12 can be installed outside the housing 1, and the rotating shaft 2 is connected to the bearing seat 12 in a cooperative manner and can rotate relative to the housing 1. A rubber pad can also be clamped between the housing 1 and the bearing seat 12 to reduce the connection gap between the two by the rubber pad. The rubber pad has a hole in the middle, and the diameter of the hole can be slightly smaller than the diameter of the rotating shaft 2. A limiting component can also be provided at the end of the rotating shaft 2 away from the housing 1 to ensure that the rotating shaft 2 will not loosen and fall out of the housing 1. Among them, the limiting component may not be limited to including a screw and a nut. The screw can be penetrated through the rotating shaft 2 in the radial direction of the rotating shaft 2, and the nut is threadedly connected to the screw to fasten the screw on the rotating shaft 2.

[0047] It can be understood that the pressure testing device for monitoring the inner cavity of the tube body 200, which is composed of a shell 1, a rotating shaft 2, a baffle 3 and a first monitoring component 4, is installed on the outside of the tube body 200. At the same time, the design of the first monitoring component 4 being located on the outside of the shell 1 can realize the test of the inner cavity pressure of the tube body 200 without affecting the normal transportation of the inner cavity material of the tube body 200, and effectively reduce the influence of the material transportation environment on the working performance of the pressure testing device, so as to ensure its service life and monitoring reliability.

[0048] It should be noted that the blockage monitoring system 100 of the present invention is not limited to application in the material conveying system of the horizontal flue of a waste incineration plant, such as the ash lower pipe, but can also be applied to pipelines of other material transportation systems that require blockage monitoring.

[0049] like Figure 3 As shown, in some embodiments, one end of the baffle 3 facing away from the rotating shaft 2 is suitable for being movably connected to the outer side of the pipe body 200 of the conveying pipeline 10.

[0050] It can be understood that the above-mentioned structural design can cooperate with the rotating shaft 2 to stably support the baffle 3 in the accommodating chamber 11, that is, the baffle 3 has two limit points along the extension direction of the tube body 200 in the accommodating chamber 11, and the baffle 3 is not easily deflected due to accidental impact of the material. At the same time, the baffle 3 can be limited from excessive deflection relative to the tube body 200 to ensure the working reliability of the pressure testing device.

[0051] like Figure 3 As shown, in some embodiments, the blockage monitoring system 100 also includes an elastic member 6, which is located at the end of the baffle 3 away from the rotating shaft 2, and the elastic member 6 is suitable for being clamped between the baffle 3 and the tube body 200 of the conveying pipeline 10 to push and pull the baffle 3 closer to or away from the tube body 200 of the conveying pipeline 10.

[0052] It can be understood that after the blockage position of the tube body 200 is unblocked, the elastic member 6 can push and pull the baffle 3 to automatically reset relative to the tube body 200. The elastic member 6 can also support the baffle 3 to avoid its deviation due to its own weight. At the same time, when the material accidentally hits the baffle 3, the elastic force of the elastic member 6 can effectively overcome the impact force of the material, further making it difficult for the baffle 3 to be deflected due to accidental impact during material transportation, thereby improving the monitoring accuracy of the pressure testing device.

[0053] Specifically, the elastic member 6 is not limited to a spring. The selection of the elastic coefficient of the spring mainly depends on the weight of the baffle 3, the installation angle, the pipeline material, and the pressure exerted on the side wall of the pipe body 200 during material blockage. When the baffle 3 is lighter and the impact of the material is small, a spring with a small elastic coefficient can be selected, and vice versa. The first end of the elastic member 6 can be connected to the baffle 3, and the second end of the elastic member 6 can be connected to the pipe wall of the pipe body 200; or, the first end of the elastic member 6 can be connected to the baffle 3, and the second end of the elastic member 6 can be pressed against the pipe wall of the pipe body 200; or, the first end of the elastic member 6 can be pressed against the baffle 3, and the second end of the elastic member 6 can be connected to the pipe wall of the pipe body 200.

[0054] Taking the figure as an example, the material blockage monitoring system 100 further includes a limiting member. A through hole is formed in the baffle 3 along its thickness direction. The thickness direction of the baffle 3 is orthogonal to the extending direction of the pipe body 200 of the conveying pipeline 10. The first end of the elastic member 6 passes through the through hole and is detachably connected to the limiting member. The limiting member is used to limit the elastic member 6 on the baffle 3. The limiting member is not limited to, for example, a spring screw, so that the elastic member 6 can be fixed on the baffle 3 by the spring screw, preventing the elastic member 6 from falling off the baffle 3.

[0055] As Figure 3 shown, in some embodiments, the material blockage monitoring system 100 further includes an extension plate 7. The extension plate 7 is connected to the side surface of the baffle 3 facing away from the open end of the accommodating cavity 11 and is in surface contact. The rotating shaft 2 is connected to the side of the extension plate 7 facing away from the baffle 3.

[0056] It can be understood that connecting the rotating shaft 2 to the baffle 3 through the extension plate 7 and in surface contact can increase the connection reliability and connection strength between the rotating shaft 2 and the baffle 3.

[0057] Specifically, the extension plate 7 is located in the accommodating cavity 11. The extension plate 7 can extend along the axial direction of the rotating shaft 2. The axial direction of the rotating shaft 2 is orthogonal to the extending direction of the pipe body 200 of the conveying pipeline 10 and the thickness direction of the baffle 3.

[0058] Furthermore, the extension plate 7 can be detachably connected to the baffle 3, and the extension plate 7 can be welded to the outer peripheral surface of the rotating shaft 2. When one of the connected parts is damaged and fails, only the corresponding damaged part needs to be replaced to enable the normal operation of the material blockage monitoring system 100, without scrapping the entire material blockage monitoring system 100, further effectively reducing the maintenance cost of the material blockage monitoring system 100. Among them, the extension plate 7 can be connected to the baffle 3 through a first fastener.

[0059] As Figure 3As shown, in some embodiments, at least a part of the rotating shaft 2 located in the accommodating cavity 11 is blocked by the baffle 3. Preferably, the part of the rotating shaft 2 located in the accommodating cavity 11 is completely blocked by the baffle 3, so as to effectively prevent the abrasion and rotation influence of the conveyed material in the pipe body 200 on the rotating shaft 2, ensure the service life of the rotating shaft 2, and also enable the material blockage monitoring system 100 to work properly.

[0060] Furthermore, a cavity 31 is provided on the side of the baffle 3 facing away from the open end of the accommodating cavity 11 to enhance the structural strength of the baffle 3. Wherein, the cavity 31 can penetrate the baffle 3 along the axial direction of the rotating shaft 2, or in other words, both ends of the cavity 31 are open along the axial direction of the rotating shaft 2, and the extension plate 7 and the part of the rotating shaft 2 located in the accommodating cavity 11 can be arranged on the bottom surface of the cavity 31.

[0061] As Figures 1 to 3 shown, in some embodiments, the material blockage monitoring system 100 further includes an elastic seal 8. The elastic seal 8 is arranged at the edge of the baffle 3, and one end of the elastic seal 8 facing away from the baffle 3 abuts against the inner peripheral surface of the accommodating cavity 11 to seal the open end of the accommodating cavity 11.

[0062] It can be understood that the cooperation of the elastic seal 8 and the baffle 3 can ensure the sealing of the open end of the accommodating cavity 11, so as to prevent the material from entering the side of the baffle 3 facing away from the open end of the accommodating cavity 11, so as to prevent the normal rotation of the baffle 3.

[0063] Specifically, the elastic seal 8 is not limited to a rubber strip. The elastic seal 8 can be detachably connected to the baffle 3, so that when one of the two connected parts is damaged and fails, only the corresponding damaged part needs to be replaced to enable the normal operation of the material blockage monitoring system 100, without scrapping the entire material blockage monitoring system 100, further effectively reducing the maintenance cost of the material blockage monitoring system 100. For example, the baffle 3 can have four edges connected end to end in sequence, and an elastic seal 8 can be arranged on each edge, and the extending direction of the elastic seal 8 is consistent with the extending direction of the corresponding edge.

[0064] In addition, combined with the above structure, when the elastic seal 8 is arranged at the edge of the baffle 3, the part of the rotating shaft 2 located in the accommodating cavity 11 can be completely blocked by the baffle 3 and the elastic seal 8, so as to avoid the influence of the material stuck at the connection seam between the rotating shaft 2 and the housing 1 on its rotation.

[0065] As Figures 1 to 3 shown, in some embodiments, the housing 1 is further provided with a cleaning port 13 opposite to the open end of the accommodating cavity 11. The cleaning port 13 is communicated with the accommodating cavity 11. The material blockage monitoring system 100 further includes a cover plate 91. The cover plate 91 is detachably connected to the housing 1 and covers the cleaning port 13.

[0066] It can be understood that the cleaning port 13 and the cover plate 91 structure are adopted to facilitate maintenance personnel to open the cover plate 91 and clear the blockage in the pipe body 200 through the cleaning port 13. Compared with the method of installing a vibrator on the pipe wall of the pipe body 200 or manually knocking the pipe wall in the related art, the present invention can directly open the cover plate 91 to insert tools such as sticks into the pipe body 200 for clearing operations without damaging the pipe wall, thereby ensuring the service life of the conveying pipeline 10, while greatly improving the convenience and efficiency of maintenance, and low cost.

[0067] Specifically, the cover plate 91 may not be limited to including a first plate body 911 and a second plate body 912, the first plate body 911 is pressed against the shell 1 and covers the cleaning port 13, the second plate body 912 is at least two and is arranged at intervals, the second plate body 912 is located on the side of the first plate body 911 adjacent to the accommodating cavity 11, the second plate body 912 is connected to the first plate body 911 at an angle, and at least a portion of the second plate body 912 extends to the accommodating cavity 11, so that the first plate body 911 is limited in the cleaning port 13 by the second plate body 912, thereby preventing the first plate body 911 from sliding on the shell 1, and ensuring that the cover plate 91 reliably covers the cleaning port 13.

[0068] like Figures 1 to 3 As shown, in some embodiments, the blockage monitoring system 100 also includes a pressure rod 92, which is pressed against the side of the cover plate 91 away from the cleaning port 13. The pressure rod 92 is detachably connected to the shell 1 so that the cover plate 91 can be pressed against the shell 1 by the pressure rod 92 to ensure that there is no air leakage, thereby ensuring the monitoring accuracy, and also preventing the material fly ash from escaping and other influences on the external environment.

[0069] like Figure 1 As shown, in some embodiments, the blockage monitoring system 100 also includes a sleeve 93, which is sleeved on the pressure rod 92. A handle 913 is provided on the side of the cover plate 91 away from the cleaning port 13. The sleeve 93 and the handle 913 are movably connected along the extension direction of the handle 913, so that the sleeve 93 and the pressure rod 92 cooperate with each other, which further facilitates the tightening installation of the pressure rod 92 on the cover plate 91 and improves the efficiency of the dredging operation.

[0070] Specifically, the housing 1 may also be provided with fixing blocks 14, which are arranged adjacent to the edge of the cleaning port 13. There are at least two fixing blocks 14, which are arranged at intervals along the axial direction of the pressure rod 92. The end of the pressure rod 92 passes through the fixing blocks 14. The material blockage monitoring system 100 further includes a second fastener, which passes through the fixing blocks 14 along the radial direction of the pressure rod 92 and is threadedly connected to the end of the pressure rod 92 to lock the pressure rod 92 on the housing 1. A support rod 931 may also be provided on the outer periphery of the bushing 93 to facilitate the maintenance personnel to hold the support rod 931 for the disassembly and assembly operations of the bushing 93 and the pressure rod 92. The handle 913 may be located between the support rod 931 and the bushing 93. The bushing 93 can be limited to the cover plate 91 by the handle 913, effectively avoiding the risk of scattered and lost parts.

[0071] As Figure 3 and Figure 4 shown, in some embodiments, the rotating shaft 2 includes a body portion 21 and an extension portion 22 that are connected to each other. The body portion 21 is connected to the housing 1 and the baffle 3, and the extension portion 22 is located outside the housing 1.

[0072] The first monitoring member 4 includes a trigger switch 41 and a contact 42. The trigger switch 41 is provided on the outer side of the housing 1 and adjacent to the extension portion 22, and the contact 42 is provided on the extension portion 22. When the rotating shaft 2 rotates to a set position, the contact 42 is electrically connected to the trigger switch 41.

[0073] It can be understood that the cooperation of the trigger switch 41 and the contact 42 can realize the monitoring of the rotation of the rotating shaft 2. The overall structure is simple, the practicability is strong, and the cost is low.

[0074] Specifically, the trigger switch 41 is not limited to a travel switch. The trigger switch 41 can be installed on the outer wall surface of the housing 1. The contact 42 is not limited to a rocker type, a push type or other types of contacts 42. For example, in the figure, the contact 42 may include a bent screw, which is connected to the extension portion 22. A trigger end is provided at one end of the bent screw away from the extension portion 22. When the baffle 3 is pushed to rotate by the pressure generated by the accumulated material, the rotating shaft 2 starts to rotate. When the rotating shaft 2 rotates relative to the housing 1 to the set position, the trigger end contacts and pushes the travel switch, realizing the electrical connection between the two. At this time, the travel switch feeds back the trigger information to the main control unit, and the maintenance personnel can comprehensively judge whether the conveying pipeline 10 is blocked according to the trigger information and the current information of the conveying chain drive.

[0075] It should be noted that the selection of the elastic coefficient of the elastic member 6 (such as a spring) will also affect whether the trigger switch 41 can be effectively triggered, so it is necessary to select a suitable elastic member 6. In addition, the operating temperature of the blockage monitoring system 100 is generally -20°C to 100°C, which is mainly determined by the materials of the rubber pad at the bearing seat 12 and the elastic seal 8. Generally, cold-resistant, high-temperature-resistant and corrosion-resistant rubber is used. Because the ash in the ash lower pipe is corrosive, other metal parts in the blockage monitoring system 100 can be made of stainless steel.

[0076] Furthermore, the blockage monitoring system 100 also includes a protective cover (not shown in the figure), which is detachably connected to the outside of the shell 1. The protective cover is arranged on the outside of the extension part 22 and the first monitoring component 4 to protect the working sensitivity of the first monitoring component 4 and avoid the influence of the external environment on the working performance of the pressure testing device.

[0077] like Figure 5 As shown, a conveying pipeline 10 of an embodiment of the present invention includes a blockage monitoring system 100 and a pipe body 200, and the pipe body 200 is provided with an opening 94; the blockage monitoring system 100 is the blockage monitoring system 100 of any of the above-mentioned embodiments, and the shell 1 of the blockage monitoring system 100 is connected to the outside of the pipe body 200 to seal the opening 94 of the pipe body 200, and the opening of the accommodating cavity 11 is connected to the opening 94 of the pipe body 200.

[0078] According to the conveying pipeline 10 of the embodiment of the present invention, the blockage monitoring system 100 is designed to determine whether there is a blockage by monitoring the pressure of the material on the side wall of the pipe body 200 and the current of the conveying chain driver, which is immediate and accurate. Therefore, compared with the related technology, the conveying pipeline 10 using the blockage monitoring system 100 can realize real-time monitoring of material blockage, with a low misjudgment rate, thereby improving production efficiency.

[0079] Specifically, the shell 1 can extend along the axial direction of the rotating shaft 2. The shell 1 can be connected to the outer tube wall of the tube body 200 by welding, and the weld can be polished and smooth to ensure that there is no air leakage during the test, further reducing the misjudgment rate of blockage monitoring. The area of the opening 94 of the tube body 200 is smaller than the open area of the accommodating cavity 11. Sufficient welding width must be reserved at the edge of the opening 94 of the tube body 200 to meet the welding requirements of the shell 1 on the tube body 200. The conveying pipeline 10 also includes a conveying chain (not shown in the figure), which is arranged in the tube body 200 and is connected to the conveying chain driver for conveying materials.

[0080] It should be noted that when the pipe body 200 is an inclined pipe, the housing 1 of the material blockage monitoring system 100 should be installed on the upper pipe wall of the inclined pipe as much as possible to prevent the falling material from hitting the baffle 3 and causing the trigger switch 41 to be accidentally touched.

[0081] like Figure 5As shown, in some embodiments, the opening of the accommodating cavity 11 has a first mounting end 111 , which is connected to the outside of the tube body 200 and forms a connection 95 , and the opening 94 of the tube body 200 has a first edge 941 adjacent to the connection 95 .

[0082] The tube body 200 is further provided with a shielding portion 96 , which extends from the connection portion 95 along the extension direction of the tube body 200 and extends to the first edge 941 . The shielding portion 96 is used to shield the portion of the baffle 3 away from the rotating shaft 2 .

[0083] It can be understood that the shielding portion 96 on the tube body 200 can effectively prevent the baffle 3 from being accidentally hit during material transportation in the inner cavity of the tube body 200, thereby accidentally triggering the trigger switch 41, and also provide a reserved space for the elastic member 6 to be clamped between the shielding portion 96 and the baffle 3.

[0084] Specifically, the first mounting end 111 is an end of the opening of the accommodating cavity 11 that is away from the rotating shaft 2 .

[0085] It should be noted that during the material conveying process in the inner cavity of the tube body 200, when the material is conveyed from the input end to the output end of the conveying chain, part of the material will splash toward the baffle 3 at the opening 94 of the tube body 200, and the part of the baffle 3 that is away from the rotating shaft 2 is likely to cause the baffle 3 to deflect when subjected to the impact force (according to the lever principle, since the driving force required for the deflection of the part of the baffle 3 that is away from the rotating shaft 2 is relatively small, if this part is hit by the material, it is easy for the baffle 3 to deflect, so it is necessary to block this part, conversely, the closer the part of the baffle 3 is to the rotating shaft 2, the less likely it is to rotate). Therefore, by shielding the part of the baffle 3 that is away from the rotating shaft 2 by the shielding portion 96, the material can be avoided to the greatest extent to accidentally hit the baffle 3, causing the rotating shaft 2 to rotate, thereby triggering the switch 41 to be accidentally touched.

[0086] Now, in combination with the specific structure of the conveying pipeline 10, taking the following ash pipe as an example, the working process thereof will be described in detail as follows: A square opening 94 can be formed on the ash discharge pipe, and the housing 1 is welded and fixed to the ash discharge pipe. When ash blockage occurs, the material accumulates from bottom to top, generating pressure on the side wall of the pipe body 200 and pushing the baffle 3 at the opening 94 of the pipe body 200. The baffle 3 rotates to drive the rotation of the rotating shaft 2. When the rotating shaft 2 rotates to a set position, the trigger switch 41 comes into contact with and is electrically connected to the contact 42, sending a material blockage signal to the main control unit. As the blockage continues to accumulate upwards, the conveying chain (i.e., the internal chain of the fly ash transportation system) encounters a greater resistance, the power of the conveying chain driver (such as a motor) increases, and the current increases. The second monitoring component 5 feeds back the current information to the main control unit to achieve ash blockage early warning. Maintenance personnel can judge whether a material blockage situation has occurred based on the foregoing information received by the main control unit. When it is determined that a material blockage has occurred, the pressure rod 92 is disassembled on-site, the cover plate 91 is removed, and a tool such as a stick is used to extend into the blocked area of the pipe body 200 through the cleaning port 13 for dredging. After dredging, the cover plate 91 is put back, and the pressure rod 92 is inserted into the bushing 93 and fixed outside the cover plate 91, thus completing the maintenance of ash blockage dredging.

[0087] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation to the present invention.

[0088] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0089] In the present invention, unless otherwise clearly specified or limited, terms such as "install", "connect", "link", "fix", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or communicable with each other; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0090] In the present invention, unless otherwise clearly specified or limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0091] In the present invention, terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0092] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A plugging material monitoring system for a conveying pipeline, characterized in that Comprising: A housing, a rotating shaft, and a baffle. The housing is adapted to be connected to the outer side of the pipe body of the conveying pipeline. The housing has a receiving cavity that is open towards the conveying pipeline. The rotating shaft is provided in the housing and is rotatable relative to the housing. The baffle is connected to the rotating shaft and is disposed in the receiving cavity to block at least part of the opening of the receiving cavity; A first monitoring member, which is provided outside the housing to monitor the rotation of the rotating shaft; A second monitoring member, which is used to monitor the current situation of the conveying chain driver of the conveying pipeline.

2. The plugging material monitoring system for a conveying pipeline according to claim 1, characterized in that, One end of the baffle away from the rotating shaft is adapted to be movably connected to the outer side of the pipe body of the conveying pipeline.

3. The plugging material monitoring system for a conveying pipeline according to claim 2, wherein It further includes an elastic member. The elastic member is located at one end of the baffle away from the rotating shaft. The elastic member is adapted to be clamped between the baffle and the pipe body of the conveying pipeline to push and pull the baffle closer to or away from the pipe body of the conveying pipeline.

4. The plugging material monitoring system for a conveying pipeline according to claim 1, characterized in that, It further includes an extension plate. The extension plate is connected to and in surface contact with the side of the baffle away from the opening of the receiving cavity. The rotating shaft is connected to the side of the extension plate away from the baffle; And / or, at least part of the rotating shaft located in the receiving cavity is blocked by the baffle.

5. The plugging material monitoring system for a conveying pipeline according to claim 1, wherein, It further includes an elastic seal. The elastic seal is provided at the edge of the baffle. One end of the elastic seal away from the baffle abuts against the inner peripheral surface of the receiving cavity to seal the opening of the receiving cavity.

6. The plugging material monitoring system for a conveying pipeline according to claim 1, wherein The housing is further provided with a cleaning port opposite to the opening of the receiving cavity. The cleaning port is communicated with the receiving cavity. The material blockage monitoring system further includes a cover plate. The cover plate is detachably connected to the housing and covers the cleaning port.

7. The plugging material monitoring system for a conveying pipeline according to claim 6, characterized in that, It further includes: A pressure rod, which presses against the side of the cover plate away from the cleaning port. The pressure rod is detachably connected to the housing; and / or A bushing, which is sleeved on the pressure rod. A handle is provided on the side of the cover plate away from the cleaning port. The bushing is movably connected to the handle along the extending direction of the handle.

8. The plugging material monitoring system for a conveying pipeline according to claim 1, wherein, The rotating shaft includes a body portion and an extension portion that are connected to each other. The body portion is connected to the housing and the baffle. The extension portion is located outside the housing; The first monitoring member includes a trigger switch and a contact. The trigger switch is provided outside the housing and adjacent to the extension portion. The contact is provided on the extension portion. When the rotating shaft rotates to a set position, the contact is electrically connected to the trigger switch.

9. A conveying pipeline, characterized in that, Comprising: A pipe body, which is provided with an opening; and A material blockage monitoring system, which is the material blockage monitoring system according to any one of claims 1-8. The housing of the material blockage monitoring system is connected to the outer side of the pipe body to cover the opening of the pipe body. The opening of the receiving cavity is communicated with the opening of the pipe body.

10. The conveying pipeline according to claim 9, characterized in that, The opening of the receiving cavity has a first mounting end. The first mounting end is connected to the pipe wall of the pipe body and forms a connection portion. The opening of the pipe body has a first edge adjacent to the connection portion; The pipe body is further provided with a shielding portion. The shielding portion extends from the connection portion along the extending direction of the pipe body and extends to the first edge. The shielding portion is used to shield the part of the baffle away from the rotating shaft.

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