Fault detection mechanism for mud scraper, detection method of fault detection mechanism and mud scraper

Abstract

The invention discloses a fault detection mechanism for a mud scraper, a detection method of the fault detection mechanism and the mud scraper. The fault detection mechanism for the mud scraper comprises a detection sheet which is arranged on a mud scraping plate of the mud scraper and moves along with the mud scraping plate; the detection sheet is provided with a first detection point and a second detection point; the sensing device is arranged above the detection piece, the detection piece moves along with the mud scraping plate, and when the mud scraping plate moves to a preset position, the first detection point and the second detection point are sensed; the control system is in communication connection with the sensing device; the alarm device is in communication connection with the control system; wherein the alarm device is used for giving an alarm after the sensing device does not detect the first detection point and the second detection point, and a worker can go to check or maintain according to the alarm.

Description

Technical Field

[0001] The invention relates to the field of mud scrapers, and in particular to a fault detection mechanism for mud scrapers, a detection method thereof, and a mud scraper. Background Art

[0002] In the field of sewage treatment, the scraper is one of the key equipment in the sewage sedimentation tank structure. Its main function is to remove the scum on the surface of the tank to ensure the efficiency of subsequent sewage deep treatment. However, in the actual operation of the outdoor scraper, due to the slow movement speed of the scraper, it is difficult to find faults in time during inspection.

[0003] Therefore, how to provide a fault warning device for a scraper to detect equipment abnormalities in a timely manner, improve equipment fault monitoring and warning capabilities, and ensure long-term stable operation of the scraper is a technical problem that needs to be solved urgently. Summary of the invention

[0004] The object of the present invention is to provide a fault detection mechanism for a mud scraper, so that abnormalities of the mud scraper can be discovered in time.

[0005] In order to solve the above technical problems, an embodiment of the present invention provides a fault detection mechanism for a mud scraper, comprising:

[0006] A detection sheet, the detection sheet is arranged on the scraper blade of the scraper and is used to follow the movement of the scraper blade; along a length direction perpendicular to the scraper blade, the detection sheet has two detection points: a first detection point and a second detection point;

[0007] A sensing device, the sensing device is used to sense the first detection point and the second detection point when the detection sheet moves to a preset position following the scraper blade;

[0008] A control system, the control system being communicatively connected to the sensing device;

[0009] an alarm device, the alarm device being communicatively connected to the control system;

[0010] Wherein, the alarm device is used to issue an alarm after the sensing device fails to detect the first detection point and the second detection point.

[0011] Compared with the prior art, the embodiments of the present invention can determine that the scraper has a fault because the alarm device sends out an alarm after the sensing device fails to detect the first detection point and the second detection point, and maintenance personnel go to repair it.

[0012] The fact that the sensing device does not detect the first detection point and the second detection point can be understood as the following two situations: one situation is that the sensing device detects neither the first detection point nor the second detection point; the other situation is that the sensing device only detects the first detection point or the second detection point.

[0013] That is to say, the alarm will not sound an alarm unless the sensing device detects both the first detection point and the second detection point. Otherwise, the alarm will sound an alarm.

[0014] Only when the operation state of the scraper blade is completely normal, the sensing device can detect the first detection point and the second detection point, and the alarm does not sound at this time.

[0015] In addition, since the first detection point and the second detection point are set along the direction of normal movement of the scraper blade, for example, along a position perpendicular to the length direction of the scraper blade, when the scraper blade is offset, it is possible that only the first detection point is detected and the second detection point cannot be detected.

[0016] Therefore, the present application sets two detection points. Once the scraper deviates, the first detection point and the second detection point cannot be detected at the same time, so it can be determined that the scraper has failed, thereby improving the stability of the scraper.

[0017] The sensing device is used to send a first signal to the control system after sensing the first detection point, and send a second signal to the control system after sensing the second detection point;

[0018] The control system is used to determine that the scraper is operating normally after receiving the first signal and the second signal; the control system is used to determine that the scraper is operating faulty and control the alarm device to sound an alarm after not receiving the first signal and the second signal.

[0019] The control system is used to determine that the scraper has an operating failure after the first signal and the second signal are not received after a preset time.

[0020] Because it includes a detection sheet, a sensing device and a control system, the detection sheet has a first detection point and a second detection point, the sensing device is used to sense the first detection point and the second detection point, and sends a first signal to the control system after detecting the first detection point, and sends a second signal to the control system after detecting the second detection point.

[0021] When the control system receives both the first signal and the second signal, it determines that the scraper is operating normally; when the control system does not receive the first signal and the second signal, or only receives one of the first signal and the second signal, it determines that the scraper is operating faultily.

[0022] Therefore, when a fault occurs, the scraper stops running, the scraper blade stops moving, and the sensing device cannot sense the first signal and the second signal, then the control system determines that the scraper has a fault, and the staff can go to check or repair it according to the alarm.

[0023] In one embodiment, the control system is used to determine that the scraper has an operating failure after neither the first signal nor the second signal is received after a preset time has passed.

[0024] In one embodiment, the control system is further used to determine that the scraper is operating normally after receiving the first signal and the second signal again after determining that the scraper is operating faulty.

[0025] In one embodiment, the fault detection mechanism further includes an alarm device, which is communicatively connected to the control system, and the control system is used to activate the alarm device after determining that the scraper has an operating fault.

[0026] In one embodiment, the sensing device is a photoelectric sensor or an electromagnetic sensor.

[0027] In one embodiment, there are multiple detection pieces, and the detection pieces are arranged at both ends of the scraper blade in the length direction;

[0028] There are two sensing devices, which are located at two ends of the scraper blade in the length direction and are used to sense the first detection point and the second detection point on the detection sheet.

[0029] In one embodiment, there are a plurality of detection sheets, and at least one detection sheet is disposed on each scraper blade.

[0030] An embodiment of the present invention further provides a method for detecting a fault of a mud scraper, comprising:

[0031] Acquire a limit signal from a scraper blade, wherein the limit signal is a first signal and a second signal from the same scraper blade;

[0032] If the limit signal is not received within a preset time, an alarm signal is issued.

[0033] An embodiment of the present invention further provides a mud scraper, the mud scraper comprising:

[0034] A plurality of scraper blades, each of which is used to scrape away scum on the surface of the sewage pool;

[0035] The above-mentioned fault detection mechanism for a mud scraper;

[0036] A driving device is connected to each of the scrapers to drive each of the scrapers to move along the surface of the sewage pool to scrape off scum.

[0037] In one embodiment, the driving device comprises:

[0038] A pair of chains, the pair of chains are relatively arranged on both sides of the scraper blade along the length direction of the scraper blade and are fixedly connected to each scraper blade, and the chain is annular;

[0039] A driving member is used to drive the pair of chains to rotate and drive the scraper to move along the surface of the sewage pool to scrape off scum. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0041] Figure 1 is a schematic structural diagram of a mud scraper in an embodiment of the present invention;

[0042] Figure 2 It is a side view of the scraper of the present invention after being placed in a sewage tank;

[0043] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0044] Figure 4 is a top view of the mud scraper of the present invention;

[0045] Figure 5 yes Figure 4 Enlarged view of point B in the middle.

[0046] Reference numerals:

[0047] 100. Scraper; 1. Scraper blade; 21. Chain; 211. First chain; 212. Second chain; 22. Driving member; 221. Driving wheel; 222. Driven wheel; 3. Detection sheet; 31. First detection point; 32. Second detection point; 4. Induction device; 5. Sewage tank. DETAILED DESCRIPTION

[0048] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the following will be described in detail with reference to the accompanying drawings. However, it will be appreciated by those skilled in the art that in the various embodiments of the present invention, many technical details are provided in order to enable the reader to better understand the present application. However, even without these technical details and various changes and modifications based on the following embodiments, the technical scheme claimed in the present application can be implemented.

[0049] In the following description, certain specific details are set forth for the purpose of illustrating various disclosed embodiments to provide a thorough understanding of the various disclosed embodiments. However, those skilled in the relevant art will recognize that the embodiments may be practiced without one or more of these specific details. In other cases, well-known devices, structures, and techniques associated with the present application may not be shown or described in detail to avoid unnecessarily obscuring the description of the embodiments.

[0050] Unless the context requires otherwise, throughout the specification and claims, the word "comprise" and variations such as "include" and "have" should be construed in an open, inclusive sense, ie, should be interpreted as "including, but not limited to."

[0051] The following will be described in detail with reference to the accompanying drawings to provide a clearer understanding of the purpose, features and advantages of the present invention. It should be understood that the embodiments shown in the accompanying drawings are not intended to limit the scope of the present invention, but are only intended to illustrate the essential spirit of the technical solution of the present invention.

[0052] References throughout the specification to "one embodiment" or "an embodiment" indicate that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, the appearances of "in one embodiment" or "in an embodiment" in various places throughout the specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any manner in one or more embodiments.

[0053] As used in this specification and the appended claims, the singular forms "a," "an," and "the" include plural referents unless the context clearly dictates otherwise. It should be noted that the term "or" is generally employed in its sense including "and / or" unless the context clearly dictates otherwise.

[0054] In the following description, in order to clearly show the structure and working mode of the present invention, many directional words will be used for description, but the words "front", "back", "left", "right", "outside", "inside", "outward", "inward", "up", "down", etc. should be understood as convenient terms and should not be understood as restrictive terms.

[0055] In order to facilitate the understanding of the scraper fault detection mechanism in the embodiment of the present application, a type of scraper is introduced below, but it should be noted that the scraper fault detection mechanism in the embodiment of the present application can be applied to the scraper introduced below, and can also be applied to other types of scrapers.

[0056] Specifically, as shown in the figure, an embodiment of the present application provides a scraper 100, which is placed in a sewage pool 5. The scraper 100 includes a plurality of scraper blades 1 and a driving device. Each scraper blade 1 can be used to scrape off the scum on the surface of the sewage pool 5. The driving device is connected to each scraper blade 1 to drive each scraper blade 1 to move along the surface of the sewage pool 5 to scrape off the scum.

[0057] Specifically, in order to enable the scraper blade 1 to move along the upper surface of the sewage pool 5, the driving device includes a pair of chains 21 and a driving member 22. The pair of chains 21 are relatively arranged on both sides of the scraper blade 1 along the length direction of the scraper blade 1 and are fixedly connected to each scraper blade 1. The chain 21 is annular. The driving member 22 is used to drive the pair of chains 21 to rotate and drive the scraper blade 1 to move along the surface of the sewage pool 5 to scrape off the scum.

[0058] As shown in the figure, there are about 50 scraper blades 1, and the two ends of the length direction of each scraper blade 1 are fixed on a pair of chains 21, which are a first chain 211 and a second chain 212. The two ends of the length direction of the scraper blade 1 are fixed on the first chain 211 and the second chain 212 respectively.

[0059] The driving member 22 includes: a driving wheel 221 and nine driven wheels 222. There are five gears on each side along the length direction of the scraper blade 1. The chain 21 is meshed with the five gears. As shown in the figure, there is a driving wheel 221 on the first chain 211. The driving wheel 221 is driven to rotate by the motor, thereby driving each driven wheel 222 to rotate, and the scraper blade 1 moves.

[0060] In addition, the mud scraper 100 may further include the following fault detection mechanism for the mud scraper 100 . The structure of the fault detection mechanism for the mud scraper 100 is described below.

[0061] The following describes a fault detection mechanism for a mud scraper 100 according to an embodiment of the present invention with reference to the accompanying drawings. The fault detection mechanism includes a detection sheet 3, a sensing device 4, a control system and an alarm device.

[0062] The detection sheet 3 is arranged on the scraper blade 1 of the scraper 100, and is used to follow the movement of the scraper blade 1; along the length direction perpendicular to the scraper blade 1, that is, along the normal movement direction of the scraper blade 1, the detection sheet 3 has a first detection point 31 and a second detection point 32. The sensing device 4 is used to sense the first detection point 31 and the second detection point 32 when the detection sheet 3 follows the scraper blade 1 to move to a preset position. The control system is in communication connection with the sensing device 4.

[0063] The alarm device is communicatively connected to the control system, wherein the alarm device is used to issue an alarm after the sensing device fails to detect the first detection point and the second detection point.

[0064] Since the alarm device sounds an alarm after the sensing device 4 fails to detect the first detection point 31 and the second detection point 32, it can be determined that the scraper 100 has a fault and the maintenance personnel go to repair it.

[0065] The failure of the sensing device 4 to detect the first detection point 31 and the second detection point 32 can be understood as the following two situations: one situation is that the sensing device 4 detects neither the first detection point 31 nor the second detection point 32; the other situation is that the sensing device 4 only detects the first detection point 31 or the second detection point 32.

[0066] That is to say, the alarm will not sound an alarm unless the sensing device 100 detects both the first detection point 31 and the second detection point 32. Otherwise, the alarm will sound an alarm.

[0067] When the operation state of the scraper blade 1 is completely normal, the sensing device 4 can detect the first detection point 31 and the second detection point 32, and the alarm does not sound at this time.

[0068] In addition, since the first detection point 31 and the second detection point 32 are arranged along the direction of normal movement of the scraper blade 1, for example, along a position perpendicular to the length direction of the scraper blade 1, when the scraper blade 1 is slightly offset, it is possible that only the first detection point 31 is detected, while the second detection point 32 cannot be detected.

[0069] Therefore, the present application sets two detection points. Once the scraper 100 deviates, the first detection point 31 and the second detection point 32 cannot be detected at the same time, so that it can be determined that the scraper 100 has a fault, thereby improving the use stability of the scraper 100.

[0070] In addition, when the sensing device 4 senses the first detection point 31, it sends a first signal to the control system, and when it senses the second detection point 32, it sends a second signal to the control system;

[0071] The control system is used to determine that the scraper 100 is operating normally after receiving the first signal and the second signal; the control system is used to determine that the scraper 100 is operating faulty and issue an alarm after not receiving the first signal and the second signal.

[0072] Since the detection sheet 3, the sensing device 4 and the control system are included, the detection sheet 3 has a first detection point 31 and a second detection point 32. The sensing device 4 is used to sense the first detection point 31 and the second detection point 32, and sends a first signal to the control system after detecting the first detection point 31, and sends a second signal to the control system after detecting the second detection point 32.

[0073] When the control system receives both the first signal and the second signal, it determines that the scraper 100 is operating normally; when the control system does not receive the first signal and the second signal, or only receives one of the first signal and the second signal, it determines that the scraper 100 is operating faultily.

[0074] Therefore, when a failure occurs, the scraper 100 stops running, the scraper blade 1 stops moving, and the sensing device 4 cannot sense the first signal and the second signal. The control system determines that the scraper 100 has a failure, and the staff can go to check or repair it according to the alarm.

[0075] In addition, only when the operation state of the scraper blade 1 is completely normal, the sensing device can detect the first detection point 31 and the second detection point 32. Since the first detection point 31 and the second detection point 32 are set along the direction of the normal movement of the scraper blade 1, for example, along a position perpendicular to the length direction of the scraper blade 1, when the scraper blade 1 deviates to some extent, it is possible that only the first detection point 31 is detected, but the second detection point 32 cannot be detected.

[0076] Therefore, the embodiment of the present application sets two detection points. Once the scraper 100 deviates, the first detection point 31 and the second detection point 32 cannot be detected at the same time, so that it can be determined that the scraper 100 has a fault, thereby improving the use stability of the scraper 100.

[0077] Specifically, as shown in the figure, the sensing device 4 can be fixed on the side wall of the sewage pool 5. When the scraper blade 1 moves, the detection sheet 3 moves to the bottom of the sensing device 4. At this time, the sensing device 4 can detect the first detection point 31 and the second detection point 32 on the detection sheet 3. When the scraper blade 1 stops moving, the sensing device 4 cannot detect the first detection point 31 and the second detection point 32 on the detection sheet 3.

[0078] In addition, in practice, since the sewage pool 5 is generally set outdoors, the detection sheet 3 is easily covered with dirt, resulting in the inability of the sensing device 4 to detect the detection point. In the embodiment of the present application, there are two detection points, and only when the sensing device 4 detects both detection points can it be determined that the scraper 100 is operating normally.

[0079] Specifically, the detection sheet 3 may be a metal plate or a plastic plate, such as a steel plate, and the steel plate may be glued or fixed to the scraper blade 1 by screws.

[0080] In order to allow the control system to determine that the scraper 100 is in a fault state, when the control system still does not receive the first signal and the second signal after a preset time, it is determined that the scraper 100 is in a fault state. When only one scraper 1 is provided with a detection piece 3, the preset time may be slightly longer than the time taken for the scraper 1 to run one circle.

[0081] In some solutions, there are 50 scraper blades 1, and each scraper blade 1 is provided with a detection sheet 3, then the preset time may be greater than the final value obtained by multiplying the distance between two adjacent scraper blades 1 by the speed. For example, the time interval between each two adjacent scraper blades 1 receiving signals is about 8 minutes, then the preset time may be 12 minutes, and if the first signal and the second signal are not received for more than 12 minutes, it is determined that the operation is faulty. Of course, if only one of the first signal and the second signal is received, it is also determined that the operation is faulty, because the scraper blade may have deviated at this time.

[0082] In addition, the fault detection mechanism also includes an alarm device, which is communicatively connected to the control system. The control system is used to activate the alarm device after determining that the scraper 100 has an operating fault.

[0083] Specifically, the sensing device 4 is a photoelectric sensor or an electromagnetic sensor, and the first detection point and the second detection point can be a reflective plate or a metal plate that can be sensed by the electromagnetic sensor.

[0084] In addition, in a possible embodiment, there are multiple detection pieces 3, and the detection pieces 3 are set at both ends of the scraper blade 1 in the length direction; there are two sensing devices 4, and the two sensing devices 4 are located at both ends of the scraper blade 1 in the length direction, for sensing the first detection point 31 and the second detection point 32 on the detection piece 3.

[0085] In a possible implementation manner, there are a plurality of detection sheets 3 , and at least one detection sheet 3 is disposed on each scraper blade 1 .

[0086] The embodiment of the present invention further provides a fault detection method for a mud scraper 100, comprising:

[0087] A limit signal is obtained from the scraper blade 1, wherein the limit signal is a first signal and a second signal from the same scraper blade 1; if the limit signal is not received within a preset time, an alarm signal is issued.

[0088] In addition, after the alarm signal is issued, the control system receives the limit signal again, at which time the alarm can be released.

[0089] Preferred embodiments of the present invention have been described above in detail, but it should be understood that aspects of the embodiments can be modified, if necessary, to employ aspects, features and concepts of the various patents, applications and publications to provide further embodiments.

[0090] These and other changes can be made to the embodiments in light of the above detailed description.In general, in the claims, the terms used should not be considered limited to the specific embodiments disclosed in the specification and the claims, but should be construed to include all possible embodiments along with the full scope of equivalents to which these claims are entitled.

[0091] Those skilled in the art will appreciate that the above embodiments are specific embodiments for implementing the present invention, and that in actual applications, various changes may be made in form and detail without departing from the spirit and scope of the present invention.

Claims

1. A fault detection mechanism for a mud scraper, characterized in that: include: A detection sheet, the detection sheet being arranged on a scraper plate of the scraper and being used for following the movement of the scraper plate; Along the length direction perpendicular to the scraper blade, the detection sheet has two detection points: a first detection point and a second detection point; A sensing device, the sensing device is used to sense the first detection point and the second detection point when the detection sheet moves to a preset position following the scraper blade; A control system, the control system being communicatively connected to the sensing device; an alarm device, the alarm device being communicatively connected to the control system; Wherein, the alarm device is used to issue an alarm after the sensing device fails to detect the first detection point and the second detection point.

2. The fault detection mechanism for a mud scraper according to claim 1, characterized in that: The sensing device is used to send a first signal to the control system after sensing the first detection point, and send a second signal to the control system after sensing the second detection point; The control system is used to determine that the mud scraper is operating normally after receiving the first signal and the second signal; After failing to receive the first signal and the second signal, the control system determines that the scraper has an operating failure and controls the alarm device to sound an alarm.

3. The fault detection mechanism for a mud scraper according to claim 1, characterized in that: The control system is used to determine that the scraper has an operating failure after the first signal and the second signal are not received after a preset time.

4. The fault detection mechanism for a mud scraper according to claim 1, characterized in that: The control system is also used for judging that the scraper is operating normally if the first signal and the second signal are received again after judging that the scraper is operating faulty.

5. The fault detection mechanism for a mud scraper according to claim 1, characterized in that: The sensing device is a photoelectric sensor or an electromagnetic sensor.

6. The fault detection mechanism for a mud scraper according to claim 1, characterized in that: There are multiple detection pieces, and the detection pieces are arranged at both ends of the scraper blade in the length direction; There are two sensing devices, which are located at two ends of the scraper blade in the length direction and are used to sense the first detection point and the second detection point on the detection sheet.

7. The fault detection mechanism for a mud scraper according to claim 1, characterized in that: There are a plurality of detection pieces, and at least one detection piece is disposed on each scraper blade.

8. A method for detecting faults of a scraper, characterized in that: include: Acquire a limit signal from a scraper blade, wherein the limit signal is any one of a first signal and a second signal from the same scraper blade; If the limit signal is not received within a preset time, an alarm signal is issued.

9. The method for detecting faults of a mud scraper according to claim 8, characterized in that: After the alarm signal is issued, the limit signal is received and the alarm is cleared.

10. A mud scraper, characterized in that: The scraper comprises: A plurality of scraper blades, each of which is used to scrape away scum on the surface of the sewage pool; The fault detection mechanism for a mud scraper as described in any one of claims 1 to 7 above; A driving device is connected to each of the scrapers to drive each of the scrapers to move along the surface of the sewage pool to scrape off scum.

11. The mud scraper according to claim 10, characterized in that: The driving device comprises: A pair of chains, the pair of chains are relatively arranged on both sides of the scraper blade along the length direction of the scraper blade and are fixedly connected to each scraper blade, and the chain is annular; A driving member is used to drive the pair of chains to rotate and drive the scraper to move along the surface of the sewage pool to scrape off scum.

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