A concrete mixing station silo material level detection device and method

Abstract

The present invention discloses a silo material level detection device and method for a concrete mixing station, and the present invention relates to the technical field of concrete production. By arranging multiple weights in a weight level meter assembly, and arranging multiple position adjustment assemblies corresponding to each weight position in an adjustment mechanism, the initial positions of the weights at multiple corresponding positions can be synchronously adjusted by using multiple position adjustment assemblies, thereby achieving the purpose of changing the distribution range of multiple weights; by changing the position of the weights, that is, the contact point between the weights and the concrete raw materials when they descend can be changed, thereby achieving the effect of detecting the height of the materials in different areas of the silo, and according to the detection results of the material heights in multiple areas in the silo, the input concrete amount can be comprehensively judged, thereby ensuring the accuracy of the silo material level detection of the concrete mixing station, and avoiding the situation where the material level detection result is misjudged due to the excessive height difference of the local material level in the silo.

Description

Technical Field

[0001] The invention relates to the technical field of concrete production, and in particular to a silo material level detection device and method for a concrete mixing station. Background Art

[0002] The production process of a concrete mixing plant requires a continuous and stable supply of raw materials. By real-time detection of the silo material level, it can ensure timely replenishment before the raw materials are about to run out, avoiding production interruptions caused by material shortages, thereby ensuring the continuity and stability of production.

[0003] At present, the commonly used detection devices for the material level of the concrete mixing station silo are the weight hammer material level meter, the rotary resistance material level meter and the radio frequency admittance material level meter;

[0004] Among them, the weight-type material level meter detects the height or storage of materials based on the lifting and lowering movement of the weight. During the measurement process, the weight is driven by the winch to descend along the wire rope or steel belt. When the weight touches the surface of the material, it stops descending due to the supporting force of the material. At this time, the control system will detect the position change of the weight and issue a command to reverse the winch, thereby pulling the weight up and back to the starting position.

[0005] A powder silo level detection device for concrete production disclosed in a patent application with reference publication number CN218381185U is a device that performs lifting and lowering adjustment inside an outer barrel by a threaded rod until a pressure sensor installed at the bottom end of the threaded rod contacts the powder, thereby pausing the operation of the motor and observing the moving distance of the threaded rod to judge the material level height inside the barrel; by using bolts to penetrate the barrel and the insert plate, the silo is fixed to the bottom of the barrel, the connection method is simple and convenient, and the powder will not overflow from the connection between the barrel and the silo.

[0006] A comprehensive analysis of the above patents reveals the following defects:

[0007] When the detection end in the material level detection device, that is, the surface of the pressure sensor, is adhered to impurities such as concrete powder, its volume will increase, and the position where the pressure sensor actually contacts the surface of the concrete powder will change, while the system still calculates according to the state when no impurities are adhered, resulting in the measurement value deviating from the actual value, and failing to measure the true material level of the concrete powder in the silo, thereby causing false alarms or no alarms, and in severe cases, causing overflow accidents; secondly, the presence of concrete powder impurities will cause uneven resistance to the weight during the descent and ascent process, thereby causing fluctuations in the measurement signal, affecting the stability of the measurement results; therefore, the present invention proposes a silo material level detection device and method for a concrete mixing station to solve the above problems. Summary of the invention

[0008] In view of the deficiencies in the prior art, the present invention provides a silo level detection device and method for a concrete mixing station, which solves the problem that after the surface of the detection end in the current level detection device is adhered to by impurities such as concrete powder, its volume will increase, and the position where the detection end actually contacts the surface of the concrete powder will change, while the system still calculates according to the state when the impurities are not adhered, resulting in the measurement value deviating from the actual value, and failing to measure the true level of the concrete powder in the silo, thereby causing false alarms or no alarms; the adhered concrete powder impurities will cause the detection end to encounter uneven resistance during the descent and ascent process, affecting the stability of the measurement results.

[0009] To achieve the above objectives, the present invention is implemented through the following technical solutions: a concrete mixing station silo level detection device, including a silo installed on the ground through a silo mounting frame, a feed pipe for filling cement ash is fixedly arranged above the outer wall of the silo, and a discharge pipe for outputting cement ash is fixedly arranged at the bottom of the silo, a ladder for convenient climbing is fixedly arranged on the side wall of the silo, and a silo level detection mechanism is also arranged inside the silo, the silo level detection mechanism includes a weight level meter assembly arranged on the top of the silo and an adjustment mechanism for regulating the level detection range of the weight level meter assembly, the adjustment mechanism is arranged inside the silo, and when the weight level meter assembly detects the material level, the surface thereof is cleaned at the same time.

[0010] Furthermore, the weight level meter assembly includes a box body fixedly arranged on the top of the silo and a winch, a sensor and a controller fixedly arranged inside the box body, a steel wire rope is wound on the output shaft of the winch, a weight is fixedly arranged at the bottom end of the steel wire rope and inside the silo, and a plurality of guide wheels are evenly arranged on the top of the inner cavity of the silo for guiding the lifting and lowering process of the steel wire rope.

[0011] Furthermore, the adjustment mechanism includes a disc fixedly mounted on the inner wall of the silo cavity, a plurality of long through grooves being evenly formed on the top of the disc, a position adjustment component being arranged at the bottom of the disc and at a position opposite to each long through groove, for adjusting the position of the weight at the corresponding position and cleaning the passing wire rope and weight, and a power mechanism for providing driving force for the position change of the plurality of position adjustment components being arranged between the plurality of position adjustment components.

[0012] Furthermore, the power mechanism includes a servo motor fixedly mounted on the top of the disc, the output shaft of the servo motor rotates through the disc and is fixedly mounted with a drive shaft, and drive plates corresponding to the positions of multiple position adjustment components are evenly and fixedly mounted on the outer wall of the drive shaft.

[0013] Furthermore, the position adjustment component includes a guide rail fixedly arranged at the bottom of the disc, a long through slot 2 is formed at the top of the guide rail and is opposite to one of the long through slots 1, a guide rod is fixedly arranged at the bottom of the guide rail through a bracket, a spring is slidably sleeved on the outer wall of the guide rod, a slide seat assembly is sleeved on the outer wall of the guide rail, and a cleaning assembly is arranged inside the slide seat assembly.

[0014] Furthermore, the slide assembly includes a slide seat slidably mounted on the outer wall of the guide rail, the side wall of the slide seat is fixedly provided with an arc-shaped protrusion that slides along the arc surface of the driving plate, the bottom of the slide seat is also provided with a second guide wheel, the spring is located on one side of the slide seat, and a cleaning cylinder is also fixedly provided on the side wall of the slide seat, and a circular track that provides a running track for the cleaning assembly is fixedly provided inside the cleaning cylinder, a scraper through hole is opened on the top of the cleaning cylinder, and a scraper ring is fixedly provided on the inner wall of the scraper through hole.

[0015] Further, the cleaning assembly includes a power conversion unit, a cleaning unit and a transmission unit, and the power conversion unit transmits power to the cleaning unit through the transmission unit to drive the cleaning unit to operate;

[0016] The power conversion unit comprises a power conversion wheel 1 and a power conversion wheel 2 which are arranged opposite to each other on the left and right. Both the power conversion wheel 1 and the power conversion wheel 2 are rotatably arranged on the inner wall of the cleaning cylinder through a rotating shaft, and a bevel gear 1 is fixedly sleeved on the outer wall of one rotating shaft.

[0017] Further, the transmission unit comprises a helical gear 2 meshingly connected with the helical gear 1, a transmission shaft is fixedly arranged at the bottom of the helical gear 2, and a gear is fixedly arranged at the bottom end of the transmission shaft;

[0018] The cleaning unit comprises a gear ring meshingly connected with the gear, cleaning brushes slidably arranged in an annular track are fixedly arranged on both sides of the outer wall of the gear ring, and a plurality of bristles are fixedly arranged on the opposite side walls of the two cleaning brushes.

[0019] The present invention also discloses a detection method for a silo material level detection device of a concrete mixing station, the method comprising the following steps:

[0020] Step 1: The feeding equipment is connected to the feed pipe through a pipeline and conveys the concrete raw materials into the silo;

[0021] Step 2: Using the control box to start the adjustment mechanism to adjust the material level detection range of the weight level meter component inside the silo. After the detection range is determined, the weight level meter component detects the material level height of the concrete raw material inside the silo at every preset time interval and records the measured material level height;

[0022] Step 3: When the concrete level inside the silo reaches the preset height, the weight level meter component will sound an alarm. At this time, stop adding concrete raw materials into the silo and start the adjustment mechanism again to control the weight level meter component to restore the original detection range.

[0023] The present invention provides a silo material level detection device and method for a concrete mixing station. Compared with the prior art, it has the following beneficial effects:

[0024] 1. A device and method for detecting the material level of a silo in a concrete mixing station. A weight level meter component and an adjustment mechanism are provided. A plurality of weights are provided in the weight level meter component. A plurality of position adjustment components corresponding to the position of each weight are provided in the adjustment mechanism. According to the material level detection requirements of the silo in the concrete mixing station, the initial positions of the weights at the plurality of corresponding positions can be synchronously adjusted by using the plurality of position adjustment components, thereby achieving the purpose of changing the distribution range of the plurality of weights. Secondly, by changing the positions of the weights, that is, the contact points of the weights with the concrete raw materials when they descend can be changed, thereby achieving the effect of detecting the heights of the materials in different areas of the silo. Moreover, according to the detection results of the material heights in the plurality of areas in the silo, the input concrete quantity can be comprehensively judged, thereby ensuring the accuracy of the material level detection of the silo in the concrete mixing station, and avoiding the misjudgment of the material level detection result due to the excessive height difference of the local material level in the silo.

[0025] 2. A silo material level detection device and method for a concrete mixing station, by arranging a cleaning component in an adjusting mechanism, can utilize the friction between the rising steel wire rope and the power conversion wheel 1 and the power conversion wheel 2 to drive the two power conversion wheels to rotate, so as to realize the conversion of the kinetic energy of the rising steel wire rope into the power to drive the rotation of the cleaning brush, and there is no need to separately arrange a power device for the rotation of the cleaning brush, thus saving the cost of arranging a power device; secondly, when the rising weight hammer and the rotating cleaning brush meet, the cleaning brush can use the bristles on its surface to clean the concrete powder raw materials attached to the surface of the weight hammer, so as to keep the surface of the weight hammer clean state, thereby avoiding the situation where the surface of the weight increases in volume due to the adhesion of concrete raw materials, ensuring that the actual position of the weight in contact with the surface of the concrete powder will not change, thereby ensuring that the test result is the true level of the concrete powder in the silo, and also avoiding the situation where the weight is subjected to uneven resistance during the descent and ascent due to the adhesion of concrete raw materials on the surface, which causes fluctuations in the measurement signal and affects the stability of the measurement results; secondly, the scraper ring can scrape off the concrete raw materials adhered to the surface of the wire rope during the lifting and lowering of the wire rope, avoiding the pollution and corrosion of the wire rope by the concrete raw materials and extending the service life of the wire rope.

[0026] 3. A device and method for detecting the material level of a silo in a concrete mixing station, which realizes linkage by setting a driving plate and an arc-shaped protrusion in a power mechanism, can use the same servo motor to synchronously drive the driving plates at multiple positions to rotate, and use the driving plate to push the slide seat gradually away from the center position of the silo to achieve the purpose of changing the position of the weight, making the adjustment of the position of the weight faster and simpler, thereby improving the efficiency of detecting the material level of the silo in the concrete mixing station. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0028] Figure 2 It is a schematic diagram of the first cross-sectional structure of the present invention;

[0029] Figure 3 It is a second cross-sectional structural schematic diagram of the present invention;

[0030] Figure 4 For the present invention Figure 3 A schematic diagram of the enlarged structure of part A;

[0031] Figure 5 It is a schematic diagram of a first assembly structure of the adjustment mechanism and the weight level meter assembly of the present invention;

[0032] Figure 6 It is a schematic diagram of a second assembly structure of the adjustment mechanism and the weight level meter assembly of the present invention;

[0033] Figure 7 For the present invention Figure 6 A schematic diagram of the enlarged structure of part B in FIG.

[0034] Figure 8 This is a schematic diagram of the structure of the present invention in which the silo is removed;

[0035] Fig. 9 It is a schematic diagram of the first cross-sectional structure of the position adjustment assembly of the present invention;

[0036] Fig.10 For the present invention Fig. 9 A schematic diagram of the enlarged structure of part C in FIG.

[0037] Fig.11 It is a second cross-sectional structural schematic diagram of the position adjustment assembly of the present invention;

[0038] Fig.12 For the present invention Fig.11 The D part in the figure is an enlarged structural diagram;

[0039] Fig.13 This is a schematic diagram of the structure of the position adjustment component of the present invention in a disassembled state;

[0040] Fig.14It is a schematic diagram of the structure of the cleaning component of the present invention.

[0041] In the figure: 1, silo; 2, feed pipe; 3, ladder; 4, discharge pipe; 5, weight level meter assembly; 51, box; 52, wire rope; 53, weight; 54, guide wheel 1; 6, adjustment mechanism; 61, disc; 62, long through slot 1; 63, position adjustment assembly; 631, guide rail; 632, long through slot 2; 633, guide rod; 634, spring; 635, arc-shaped protrusion; 636, guide wheel 2 ; 637, cleaning cylinder; 638, circular track; 639, cleaning assembly; 6391, power conversion wheel one; 6392, power conversion wheel two; 6393, bevel gear one; 6394, bevel gear two; 6395, transmission shaft; 6396, gear; 6397, gear ring; 6398, cleaning brush; 6310, scraper ring; 6311, slide; 64, servo motor; 65, drive shaft; 66, drive plate. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] like Figures 1 to 14 The present invention provides two technical solutions: a concrete mixing station silo material level detection device, specifically including the following embodiments:

[0044] Embodiment 1: A silo level detection device for a concrete mixing station includes a silo 1 installed on the ground through a silo mounting frame, a feed pipe 2 for filling cement ash is fixedly installed above the outer wall of the silo 1, and a discharge pipe 4 for outputting cement ash is fixedly installed at the bottom of the silo 1, a ladder 3 for easy climbing is fixedly installed on the side wall of the silo 1, and a silo level detection mechanism is also arranged inside the silo 1, the silo level detection mechanism includes a weight level meter assembly 5 arranged on the top of the silo 1 and an adjustment mechanism 6 for adjusting the level detection range of the weight level meter assembly 5, the adjustment mechanism 6 is arranged inside the silo 1, and when the weight level meter assembly 5 detects the material level, the surface cleaning operation is completed at the same time. The feed pipe 2 is located below the adjustment mechanism 6; the concrete raw material is cement or fly ash or additives. The weight level meter assembly 5 includes a box body 51 fixedly arranged on the top of the silo 1 and a winch, a sensor and a controller fixedly arranged inside the box body 51. A steel wire rope 52 is wound on the output shaft of the winch. A weight 53 is fixedly arranged at the bottom end of the steel wire rope 52 and inside the silo 1. A plurality of guide wheels 54 are evenly arranged on the top of the inner cavity of the silo 1 for guiding the lifting process of the steel wire rope 52. The weight level meter assembly 5 also includes a display terminal arranged in the control room. The display terminal is mainly composed of a touch screen, which is used to display the material level, alarm information, etc. in real time, so that the operator can check the material level at any time and make corresponding decisions and adjustments. The sensor is used to measure the moving distance of the wire rope 52, and convert the mechanical displacement into an electrical signal output for the controller to process and calculate data. The controller receives the output signal of the sensor, performs data processing and logical judgment to control the movement of the winch, and realizes automatic measurement and return of the weight 53. The winch is used to drive the wire rope 52 to pull the weight up and down. During the measurement process, the descending and ascending speed of the weight 53 is controlled to ensure the accuracy of the measurement. A circular through hole is opened at the top center of the silo 1, and the guide wheels 54 are evenly distributed on the circumference of the circular through hole. The wire rope 52 passes through the cleaning cylinder 637. , guide wheel 2 636, long through slot 2 632, and then pass through guide wheel 1 54 and the circular through hole to be wound around the winch output shaft in the box body 51; guide wheel 1 54 includes a wheel frame and a roller rotatably arranged inside the wheel frame, an annular groove is provided on the outer wall of the roller, and the wire rope 52 slides along the inner wall of the annular groove; the number of winches, sensors and controllers set is one, and the winding rollers of three wire ropes 52 are fixed on its output shaft at the same time, the three wire ropes 52 are led out from the box body 51 through the guide tube, and are divided into three different directions and enter the position adjustment components 63 at the corresponding positions respectively, the sensor is used to monitor the moving distance of one of the wire ropes 52, because the motion states of the three wire ropes 52 are exactly the same, therefore, the monitoring data of the sensor can be used for the other two wire ropes 52, and the controller is used to control the working state of the winch.By setting a weight level meter component 5 and an adjustment mechanism 6, a plurality of weights 53 are arranged in the weight level meter component 5, and a plurality of position adjustment components 63 corresponding to the position of each weight 53 are arranged in the adjustment mechanism 6. According to the material level detection requirements of the concrete mixing station silo, the initial positions of the weights 53 at a plurality of corresponding positions can be synchronously adjusted by using the plurality of position adjustment components 63, thereby achieving the purpose of changing the distribution range of the plurality of weights 53; secondly, by changing the position of the weight 53, that is, the contact point of the weight 53 with the concrete raw material when it descends can be changed, thereby achieving the effect of detecting the height of the material in different areas of the silo 1, and according to the detection results of the material height in multiple areas in the silo 1, the input concrete amount can be comprehensively judged, thereby ensuring the accuracy of the silo material level detection of the concrete mixing station, and avoiding the situation where the material level detection result is misjudged due to the excessive height difference of the local material level in the silo.

[0045] Embodiment 2: The main difference between this embodiment and the first technical solution is that: a concrete mixing station silo material level detection device, the adjustment mechanism 6 includes a disk 61 fixedly set on the inner wall of the silo 1 cavity, and a plurality of long through slots 62 are evenly opened on the top of the disk 61. A position adjustment component 63 is arranged at the bottom of the disk 61 and at a position opposite to each long through slot 62, which is used to adjust the position of the weight 53 at the corresponding position and clean the wire rope 52 and the weight 53 passing through. A power mechanism for providing driving force for the position change is arranged between the plurality of position adjustment components 63. A control box for controlling the operation process of the adjustment mechanism 6 is also arranged in the control room. The power mechanism includes a servo motor 64 fixedly set on the top of the disk 61, and the output shaft of the servo motor 64 rotates through the disk 61 and is fixedly provided with a drive shaft 65. The outer wall of the drive shaft 65 is evenly fixed with a drive plate 66 corresponding to the position of the plurality of position adjustment components 63. The position adjustment component 63 includes a guide rail 631 fixedly arranged at the bottom of the disc 61, a second long through slot 632 is provided at the top of the guide rail 631 and is opposite to one of the first long through slots 62, a guide rod 633 is fixedly arranged at the bottom of the guide rail 631 through a bracket, a spring 634 is slidably sleeved on the outer wall of the guide rod 633, a slide seat assembly is sleeved on the outer wall of the guide rail 631, and a cleaning assembly 639 is arranged inside the slide seat assembly. The slide assembly includes a slide 6311 slidably sleeved on the outer wall of the guide rail 631, an arc-shaped protrusion 635 sliding along the arc surface of the driving plate 66 is fixedly arranged on the side wall of the slide 6311, a guide wheel 636 is also arranged at the bottom of the slide 6311, a spring 634 is located on one side of the slide 6311, a cleaning cylinder 637 is also fixedly arranged on the side wall of the slide 6311, a circular track 638 providing a running track for the cleaning assembly 639 is fixedly arranged inside the cleaning cylinder 637, a scraping through hole is opened at the top of the cleaning cylinder 637, and a scraping ring 6310 is fixedly arranged on the inner wall of the scraping through hole. The scraping ring 6310 is a steel annular hanging ring with toughness, and its inner diameter is adapted to the outer diameter of the steel wire rope 52, and can scrape the concrete raw materials remaining on the surface of the steel wire rope 52 passing through. The cleaning component 639 includes a power conversion unit, a cleaning unit and a transmission unit. The power conversion unit transmits power to the cleaning unit through the transmission unit to drive the cleaning unit to operate; the power conversion unit includes a power conversion wheel 1 6391 and a power conversion wheel 2 6392 which are arranged opposite to each other on the left and right. The power conversion wheel 1 6391 and the power conversion wheel 2 6392 are both rotatably arranged on the inner wall of the cleaning cylinder 637 through a rotating shaft, and a bevel gear 1 6393 is fixedly sleeved on the outer wall of one of the rotating shafts; the outer walls of the power conversion wheel 1 6391 and the power conversion wheel 2 6392 are recessed inward to form an annular limiting groove, and a rubber ring is fixedly arranged in the annular fiber groove. The steel wire rope 52 slides close to the annular limiting groove, and the rubber ring can increase the friction between the steel wire rope 52 and the power conversion wheel 1 6391 and the power conversion wheel 2 6392.The transmission unit includes a bevel gear 2 6394 meshingly connected with the bevel gear 1 6393, a transmission shaft 6395 is fixedly arranged at the bottom of the bevel gear 2 6394, a gear 6396 is fixedly arranged at the bottom end of the transmission shaft 6395, a support arm is rotatably sleeved on the outer wall of the transmission shaft 6395, and the support arm is fixedly arranged on the inner wall of the cleaning cylinder 637. The cleaning unit includes a gear ring 6397 meshingly connected with the gear 6396, and cleaning brushes 6398 slidably arranged in the annular track 638 are fixedly arranged on both sides of the outer wall of the gear ring 6397, and a plurality of bristles are fixedly arranged on the opposite side walls of the two cleaning brushes 6398. The weight 53 is located between the two cleaning brushes 6398 inside the cleaning cylinder 637, and the length of the cleaning brush 6398 is greater than the length of the weight 53.

[0046] The embodiment of the present invention also provides a detection method of a silo material level detection device of a concrete mixing station, the method comprising the following steps:

[0047] Step 1, the feeding equipment is connected to the feed pipe 2 through a pipeline, and the concrete raw materials are transported to the interior of the silo 1; the specific process is: the feed pipe 2 is a channel for transporting the concrete raw materials to the silo 1, the external transport equipment is connected to the feed pipe 2 through a pipeline, cement or fly ash or additive powder is input into the interior of the silo 1 through the feed pipe 2, during the input of the concrete raw materials, the input of the concrete raw materials is paused at a preset interval, and the pause time is used for the weight hammer level meter component 5 to detect the material level of the concrete raw materials inside the silo 1;

[0048] Before the detection, the servo motor 64 is controlled by the control box to rotate within the range of 0 to 60 degrees, and a detection point is set every 10 degrees of rotation within the range of 0 to 60 degrees, with a total of six detection points. Each detection point corresponds to a control button in the control box. Since the servo motor 64 has been programmed according to the inner diameter of the silo 1, the servo motor 64 rotates in a counterclockwise low speed manner;

[0049] The weight level meter assembly 5 sets six preset release lengths of the steel wire rope 52 corresponding to the six detection points. Each detection point corresponds to a preset release length of the steel wire rope 52. The cleaning cylinder 637 is adjusted to different detection positions to ensure that the weight 53 is always located at the same height position inside the cleaning cylinder 637 after the cleaning cylinder 637 changes its position. The preset release length is controlled by the controller, and the command is sent through the touch screen in the control room. Six preset length release touch buttons are correspondingly set on the touch screen. According to the detection point control button selected in the control box, the preset length release touch button is selected accordingly;

[0050] When adjusting the material level detection range of the weight 53, the detection point is pre-selected according to the required detection position, and then the preset length release button set corresponding to the detection point is pressed, the controller controls the hoist to start, and monitors the length of the wire rope 52 falling in real time through the sensor. When the falling length reaches the preset length, the hoist stops working, and then the required detection point control button in the pre-selected control box is pressed again, the servo motor 64 rotates counterclockwise at a preset angle, and the drive shaft 65 synchronously drives the multiple drive plates 66 to rotate synchronously, pushing the position adjustment component 63 at the corresponding position The arc-shaped protrusion 635 inside slides along its arc surface, and the driving shaft 65 is gradually pushed away from the driving shaft 65. The slide 6311 slides along the outer wall of the guide rail 631, and the spring 634 is squeezed by the slide 6311 and elastically deformed. The servo motor 64 stops running after rotating a preset angle. During the movement of the slide 6311, the steel wire rope 52 is pulled and guided by the guide wheel 2 636, the power conversion wheel 1 6391 and the power conversion wheel 2 6392 and gradually moves upward, and the heavy hammer 53 finally returns to its original position in the cleaning brush 6398.

[0051] During the detection, the winch is started to release the wire rope 52, and the weight 53 moves downward under the action of its own gravity. When the weight 53 contacts the surface of the concrete raw material, it stops falling due to the supporting force of the concrete raw material. At this time, the sensor detects the position change of the weight 53 and issues a command to reverse the winch, thereby pulling the weight 53 back to the starting position. The controller calculates the height of the weight 53's descent through the two position changes of the weight 53 recorded by the sensor. Since the chamber height of the silo 1 is a known value, the height of the concrete raw material level can be calculated by subtracting the chamber height value of the silo 1 from the height value of the weight 53 moving downward. When the winch pulls the wire rope 52 upward, the weight 53 stops falling. The wire rope 52 utilizes friction force to drive the power conversion wheel 1 6391 and the power conversion wheel 2 6392 to rotate. Since the bevel gear 1 6393 and the bevel gear 2 6394 are meshed with each other, the transmission shaft 6395 is able to drive the gear 6396 to rotate. Since the gear 6396 and the gear ring 6397 are meshed with each other, the gear 6396 drives the two cleaning brushes 6398 to rotate. The bristles on the side walls of the cleaning brush 6398 clean the passing weight 53 and the outer wall of the wire rope 52 until the weight 53 returns to its original position, and the scraper ring 6310 scrapes the concrete raw materials remaining on the surface of the passing wire rope 52 again to keep the surface of the weight 53 clean.

[0052] Step 2: Using the control box to start the adjustment mechanism 6 to adjust the material level detection range of the weight level meter assembly 5 inside the silo 1. After the detection range is determined, the weight level meter assembly 5 detects the material level height of the concrete raw material inside the silo 1 at every preset time interval, and records the measured material level height;

[0053] Step 3: When the concrete level inside the silo 1 reaches a preset height, the weight level meter assembly 5 sounds an alarm. At this time, stop adding concrete raw materials into the silo 1, and start the adjustment mechanism 6 again to control the weight level meter assembly 5 to restore the original detection range.

[0054] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0055] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A silo material level detection device for a concrete mixing station, characterized in that: The invention comprises a silo (1) arranged on the ground via a silo mounting frame, wherein a feed pipe (2) for filling cement ash is fixedly arranged above the outer wall of the silo (1), and a discharge pipe (4) for discharging cement ash is fixedly arranged at the bottom of the silo (1), and a ladder (3) for facilitating climbing is fixedly arranged on the side wall of the silo (1), and a silo material level detection mechanism is also arranged inside the silo (1), the silo material level detection mechanism comprises a weight level meter assembly (5) arranged on the top of the silo (1) and an adjustment mechanism (6) for adjusting the material level detection range of the weight level meter assembly (5), the adjustment mechanism (6) being arranged inside the silo (1), and when the weight level meter assembly (5) detects the material level, a cleaning operation is simultaneously completed on its surface; The weight level meter assembly (5) comprises a box body (51) fixedly arranged on the top of the silo (1) and a winch, a sensor and a controller fixedly arranged inside the box body (51); a steel wire rope (52) is wound around the output shaft of the winch; a weight (53) is fixedly arranged at the bottom end of the steel wire rope (52) and inside the silo (1); a plurality of guide wheels (54) are evenly arranged on the top of the inner cavity of the silo (1) for guiding the lifting process of the steel wire rope (52); The regulating mechanism (6) comprises a disc (61) fixedly mounted on the inner wall of the cavity of the silo (1), a plurality of long through slots (62) being evenly arranged on the top of the disc (61), a position regulating assembly (63) being arranged at the bottom of the disc (61) and at a position opposite to each of the long through slots (62), for regulating the position of a weight (53) at a corresponding position and cleaning the steel wire rope (52) and the weight (53) passing through, and a power mechanism for providing a driving force for changing the position of the plurality of position regulating assemblies (63); The power mechanism comprises a servo motor (64) fixedly arranged on the top of the disc (61); an output shaft of the servo motor (64) rotates through the disc (61) and is fixedly provided with a drive shaft (65); and drive plates (66) corresponding to the positions of the plurality of position adjustment components (63) are evenly and fixedly provided on the outer wall of the drive shaft (65); The position adjustment component (63) comprises a guide rail (631) fixedly arranged at the bottom of the disc (61); a second long through slot (632) is provided at the top of the guide rail (631) and is opposite to one of the first long through slots (62); a guide rod (633) is fixedly arranged at the bottom of the guide rail (631) via a bracket; a spring (634) is slidably sleeved on the outer wall of the guide rod (633); a slide seat component is sleeved on the outer wall of the guide rail (631); a cleaning component (639) is arranged inside the slide seat component; The slide assembly comprises a slide (6311) slidably sleeved on the outer wall of the guide rail (631), the side wall of the slide (6311) being fixedly provided with an arc-shaped protrusion (635) that slides along the arc surface of the driving plate (66), the bottom of the slide (6311) being further provided with a second guide wheel (636), a spring (634) being located on one side of the slide (6311), a cleaning cylinder (637) being further fixedly provided on the side wall of the slide (6311), an annular track (638) that provides a running track for the cleaning assembly (639) being fixedly provided inside the cleaning cylinder (637), a scraping through hole being provided at the top of the cleaning cylinder (637), a scraping ring (6310) being fixedly provided on the inner wall of the scraping through hole; The cleaning component (639) comprises a power conversion unit, a cleaning unit and a transmission unit, wherein the power conversion unit transmits power to the cleaning unit via the transmission unit to drive the cleaning unit to operate; The power conversion unit comprises a power conversion wheel 1 (6391) and a power conversion wheel 2 (6392) which are arranged opposite to each other on the left and right sides. The power conversion wheel 1 (6391) and the power conversion wheel 2 (6392) are both rotatably arranged on the inner wall of the cleaning cylinder (637) via a rotating shaft, and a bevel gear 1 (6393) is fixedly sleeved on the outer wall of one of the rotating shafts. The transmission unit comprises a bevel gear 2 (6394) meshingly connected with the bevel gear 1 (6393), a transmission shaft (6395) is fixedly arranged at the bottom of the bevel gear 2 (6394), and a gear (6396) is fixedly arranged at the bottom end of the transmission shaft (6395); The cleaning unit comprises a gear ring (6397) meshingly connected to the gear (6396), cleaning brushes (6398) slidably arranged in a circular track (638) are fixedly arranged on both sides of the outer wall of the gear ring (6397), and a plurality of bristles are fixedly arranged on the opposite side walls of the two cleaning brushes (6398).

2. A detection method for implementing the concrete mixing station silo material level detection device according to claim 1, characterized in that: The method comprises the following steps: Step 1: The feeding device is connected to the feed pipe (2) via a pipeline and conveys the concrete raw materials into the silo (1); Step 2: Using the control box to start the regulating mechanism (6) to adjust the material level detection range of the weight hammer material level meter component (5) inside the silo (1); after the detection range is determined, the weight hammer material level meter component (5) detects the material level height of the concrete raw material inside the silo (1) at every preset time interval, and records the measured material level height; Step 3: When the concrete level inside the silo (1) reaches a preset height, the weight level meter assembly (5) sounds an alarm, and then the addition of concrete raw materials into the silo (1) is stopped. The regulating mechanism (6) is started again to control the weight level meter assembly (5) to restore the original detection range.

Images