Detection and alarm device and method for falling foreign matter during rock wool fiber forming

Abstract

The invention relates to the technical field of foreign matter detection, and provides a detection alarm device and method for falling foreign matters during rock wool fiber forming, and the detection alarm device comprises a detection roller, a brush roller and a mechanical limiting device; the detection roller is rotatably arranged on the fixed support through a first frame body, the width of the detection roller is matched with the width of rock wool, and the detection roller and the rock wool are oppositely arranged; a mechanical limiting device is further arranged on the fixing support and abuts against the lower end face of the first frame body, and the gap between the detection roller and the rock wool is controlled by adjusting the height of the mechanical limiting device. The brush roller is arranged on the fixed support and abuts against the outer side of the inclined lower portion of the detection roller, and the rotation direction of the detection roller is opposite to that of the brush roller. The device disclosed by the invention can accurately identify the foreign matters adhered to the rock wool output from the wool collecting machine, so that the safety of rock wool production is improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field related to foreign matter detection, and in particular, to a detection and alarm device and method for foreign matter dropped during rock wool fiberization. Background Art

[0002] The statements in this section merely provide background information related to the present disclosure and do not necessarily constitute prior art.

[0003] The main raw materials of rock wool are natural rocks such as basalt and industrial waste. These raw materials are melted in a high-temperature furnace, usually at a temperature of about 1500°C. The molten raw materials are fed into a centrifuge, which spins at high speed to throw out the melt to form long and thin fibers. During the fiber-forming process, resin glue is sprayed on the fibers. These resin glues help to bond the fibers together to form a strong rock wool felt. The fibers are collected by a cotton collector, whose main function is to spread the fibers evenly into a thin layer, i.e., a primary felt. This process is similar to making a quilt. After the rock wool fibers collected by the cotton collector form a primary felt, they are conveyed to the pendulum system through a conveyor belt, which evenly distributes the primary felt on the conveyor belt by swinging. This helps to form a rock wool board or felt with uniform thickness.

[0004] The inventor found in the research that when the cotton collector collects fibers, a small part of the fibers and resin glue will stick to the side wall and ceiling of the cotton collector. Over time, large pieces of useless glue will be produced. The large pieces of glue will fall on the rock wool and will adhere to the rock wool as the cotton collector rotates and enter the pendulum. Because the pendulum has two belts running in opposite directions at the same time, and the distance between the two belts is about 30mm, when the large pieces of glue enter the pendulum belt, they squeeze the pendulum belt, causing the pendulum belt to stop rotating and causing mechanical failure. This situation will affect the normal operation of the entire production line, increase downtime and maintenance costs. Summary of the invention

[0005] In order to solve the above problems, the present disclosure proposes a detection alarm device and method for foreign matter dropped during rock wool fiberization, which can accurately identify foreign matter adhered to the rock wool output from a rock wool collector, thereby improving the safety of rock wool production.

[0006] In order to achieve the above objectives, the present disclosure adopts the following technical solutions:

[0007] One or more embodiments provide a detection alarm device for foreign matter dropped during rock wool fiberization, comprising a fixed bracket, a detection roller, a brush roller and a mechanical limit device arranged on the fixed bracket;

[0008] The detection roller is rotatably arranged on the fixed bracket through the first bracket, the width of the detection roller is adapted to the width of the rock wool, and is arranged opposite to the rock wool; a mechanical limit device is also arranged on the fixed bracket, which is pressed against the lower end surface of the first bracket, and the gap between the detection roller and the rock wool is controlled by adjusting the height of the mechanical limit device;

[0009] The brush roller is arranged on the fixed bracket and abuts against the outer side of the oblique lower part of the detection roller. The rotation directions of the detection roller and the brush roller are opposite.

[0010] One or more embodiments provide a foreign object detection and alarm method based on the above-mentioned foreign object detection and alarm device for falling foreign objects during rock wool fiberization, and the steps are as follows:

[0011] Start the detection roller first, and test whether the speed of the detection roller reaches the linear speed of the cotton collector;

[0012] When the detection roller reaches the linear speed of the cotton collector, the brush roller is turned on, and the brush roller and the detection roller are controlled to rotate in opposite directions;

[0013] Control the brush roller to rotate at a speed greater than the detection roller;

[0014] When the detection process is completed or the cotton collector stops working, the detection roller and the brush roller are controlled to stop rotating.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The width of the detection roller provided in the present invention is adapted to the width of the rock wool, and comprehensive detection of foreign matter 3 on the surface of the rock wool is achieved through surface contact; at the same time, the rock wool passes through the inner side of the detection roller, and the brush roller rests on the outer side of the detection roller at an angle below the detection roller. The brush roller and the mechanical limit device can achieve stable support for the detection roller, and can control the gap between the detection roller and the surface of the rock wool. Even when subjected to the impact of a large foreign body, the first frame connected to the detection roller rotates, and the detection roller rises and then drops under the action of gravity, which can ensure that the gap between the detection roller and the surface of the rock wool remains unchanged.

[0017] The device disclosed in the present invention can detect and alarm large foreign objects when the rock wool is fiberized, effectively solving the problem of mechanical failure caused by large foreign objects (useless rubber blocks) entering the pendulum belt, reducing workload, and effectively reducing equipment failure rate, improving work efficiency, reducing production losses caused by fault inspection and maintenance, reducing maintenance costs, and reducing the amount of fault repairs.

[0018] The advantages of the present disclosure and the advantages of additional aspects will be described in detail in the following specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings constituting a part of the present disclosure are used to provide a further understanding of the present disclosure. The exemplary embodiments of the present disclosure and the description thereof are used to explain the present disclosure but do not constitute a limitation of the present disclosure.

[0020] Figure 1 is a front view of the detection alarm device of Embodiment 1 of the present disclosure;

[0021] Figure 2 is a top view of the detection alarm device of Embodiment 1 of the present disclosure;

[0022] Figure 3 is a schematic diagram of a rock wool passing detection alarm device in the absence of large foreign matter in Example 1 of the present disclosure;

[0023] Figure 4 is a schematic diagram of a rock wool detection alarm device when a large foreign body passes through in Embodiment 1 of the present disclosure;

[0024] Figure 5 It is a structural schematic diagram of a detection alarm device provided on a rock wool production device according to Embodiment 1 of the present disclosure;

[0025] Wherein: 1. detection roller, 2. detection roller transmission mechanism, 3. counterweight rod, 4. first bearing, 5. mechanical limit device, 6. brush roller, 7. brush roller transmission mechanism, 8. fixed bracket, 9. pin shaft, 10. first frame, 11. cotton collector, 12. second bearing, 13. foreign matter, 14. rock wool, 15. limit plate, 16. pendulum belt, 17. No. 1 belt;

[0026] 8-1, the fourth support rod, 8-2, the second support rod, 8-3, the third support rod. DETAILED DESCRIPTION

[0027] The present disclosure is further described below in conjunction with the accompanying drawings and embodiments.

[0028] It should be noted that the following detailed descriptions are exemplary and are intended to provide further explanation of the present disclosure. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present disclosure belongs.

[0029] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present disclosure. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof. It should be noted that, in the absence of conflict, the various embodiments in the present disclosure and the features in the embodiments can be combined with each other. The embodiments will be described in detail below in conjunction with the accompanying drawings.

[0030] Example 1

[0031] In the technical solutions disclosed in one or more embodiments, Figures 1 to 5 As shown, a detection alarm device for foreign objects dropped during rock wool fiberization comprises a fixed bracket 8, a detection roller 1, a brush roller 6 and a mechanical limit device 5 arranged on the fixed bracket 8;

[0032] The detection roller 1 is rotatably arranged on the fixed bracket 8 through the first frame 10. The width of the detection roller 1 is adapted to the width of the rock wool and is arranged opposite to the rock wool. A mechanical limit device 5 is also arranged on the fixed bracket 8, which is pressed against the lower end surface of the first frame 10. The gap between the detection roller 1 and the rock wool is controlled by adjusting the height of the mechanical limit device 5.

[0033] The brush roller 6 is arranged on the fixed bracket 8 and abuts against the outer side of the obliquely lower side of the detection roller 1 . The detection roller 1 and the brush roller 6 rotate in opposite directions and are arranged in contact with each other.

[0034] In this embodiment, the width of the detection roller is adapted to the width of the rock wool, and comprehensive detection of foreign matter 13 on the surface of the rock wool 14 is achieved through surface contact; at the same time, the rock wool 14 passes through the inner side of the detection roller 1, and the brush roller 6 is against the outer side of the detection roller 1 at an angle below the detection roller 1. The brush roller 6 and the mechanical limit device 5 can achieve stable support for the detection roller 1, and can control the gap between the detection roller 1 and the surface of the rock wool 14. Even if the detection roller 1 is impacted by a large foreign matter 13, the first frame 10 connected to the detection roller 1 rotates, and the detection roller 1 is raised and then drops under the action of gravity, it can also ensure that the gap between the detection roller 1 and the surface of the rock wool 14 remains unchanged.

[0035] In a further technical solution, the detection roller 1 is arranged on the upper arc section of the rock wool conveyor belt that sends out the cotton collector 11, and the detection roller 1 is subjected to the force of the foreign body 13 in an obliquely upward direction;

[0036] Specifically, the upper arc section of the rock wool conveyor belt is a reference plane in the horizontal direction of the center of the arc-shaped conveyor belt, and the detection roller 1 is above the reference plane.

[0037] In some embodiments, the detection roller 1 is connected to a detection roller transmission mechanism 2, and the detection roller transmission mechanism 2 is fixedly disposed on the first frame 10 to provide power for the rotation of the detection roller 1;

[0038] The length of the detection roller 1 is the same as the width of the cotton collector 11. One end of the detection roller 1 is connected to the detection roller transmission mechanism 2. The detection roller transmission mechanism 2 drives the detection roller 1 to rotate. The detection roller transmission mechanism 2 is controlled by the cotton collector electronic control system, so that the linear speed of the detection roller 1 is the same as the linear speed of the cotton collector 11; it can minimize the influence of the detection roller setting on the rock wool transmission during detection.

[0039] In one achievable implementation, the first frame 10 is a quadrilateral frame structure composed of a plurality of brackets, and is rotatably fixed to the top of the fixed bracket 8 through the first bearing 4; the rotatable connection of the first frame 10 is realized through the first bearing 4; the two opposite side brackets of the first frame 10 are rotatably connected to the two ends of the detection roller 1;

[0040] Optionally, the first frame 10 may be a rectangular square tube, and may be composed of a plurality of rectangular square tubes;

[0041] Specifically, two opposite side brackets of the first frame body 10 are connected to two ends of the detection roller 1 through bearings;

[0042] Optionally, a second support rod 8-2 is provided below the first frame 10 on the fixed bracket 8; a third support rod 8-3 is fixedly connected to the bottom of the second support rod 8-2; a brush roller 6 is provided on the third support rod 8-3, and the upper end surface of the second support rod 8-2 faces the lower end surface of the bracket of the first frame 10; a mechanical limit device 5 is provided on the second support rod 8-2 near the detection roller 1;

[0043] In order to achieve stable support of the second support rod 8-2, a fourth support rod 8-1 is connected to the lower end of the second support rod 8-2, one end of the fourth support rod 8-1 is connected to the bottom surface of the second support rod 8-2, and the other end is fixedly connected to the fixed bracket 8 to form a triangular reinforcement structure;

[0044] Optionally, a brush roller 6 is arranged on the third support rod 8-3 via a second bearing 12.

[0045] A further technical solution is that a position sensor is provided on the upper end surface of the mechanical limit device 5. The position sensor can be a pressure sensor, a pressure-sensitive sensor, etc., which is used to detect whether the first frame 10 leaves the mechanical limit device 5. At this time, a foreign object 13 passes through, and the detection roller 1 is lifted by the foreign object 13, so that the first frame 10 is lifted accordingly.

[0046] Optionally, the detection alarm device is further provided with a signal processing terminal and a display device, the signal processing terminal is connected to the display device and the position sensor respectively, and when the position sensor detects that the first frame 10 leaves the mechanical limit device 5, it is determined that a foreign object 13 has passed;

[0047] In this embodiment, the alarm signal sent by the signal processing terminal in response to the judgment result of the position sensor is displayed through the display device.

[0048] Furthermore, according to the actual production situation of rock wool, the thickness or fluffiness of the produced rock wool is determined, and the height of the mechanical limit device 5 is controlled;

[0049] Specifically, the production conditions that affect the thickness or fluffiness of the rock wool include the centrifuge speed, the blowing air pressure, the speed of the cotton collector 11, and the air flow rate and direction. The thickness of the rock wool can be estimated according to the specific production conditions, and the height of the mechanical limit device 5 can be adjusted accordingly.

[0050] Among them, the rotation speed of the centrifuge will affect the length and diameter of the fiber, thus affecting the fluffiness of the rock wool;

[0051] Blowing air pressure: The pressure of the blowing air determines the dispersion effect of the fibers and directly affects the fluffiness of the rock wool.

[0052] Collector speed: The speed of the collector 11 will affect the thickness and uniformity of the rock wool;

[0053] Air velocity and direction in the collector 11: Air velocity and direction will affect the deposition and distribution of fibers, thereby affecting the bulkiness and thickness of the rock wool.

[0054] Further, the height of the mechanical limit device is adjusted so that the distance between the rock wool conveyor belt for transmitting the rock wool and the detection roller 1 is not greater than the distance between the pendulum belts 16;

[0055] In the above scheme, the distance between the rock wool conveyor belt and the detection roller 1 is limited to ensure that the pendulum spacing requirements are met after transmission to the pendulum belt. An alarm is triggered when rock wool exceeding the pendulum spacing passes through the pendulum to prevent rock wool carrying large foreign objects 13 from squeezing the pendulum belt, thereby causing the pendulum belt to stop rotating and causing mechanical failure.

[0056] For example, if the distance between the two pendulum belts 16 is about 30 mm, and the thickness of the rock wool board is less than 30 mm, the distance between the lower plane of the detection roller 1 and the upper plane of the cotton collector 11 needs to be adjusted to less than 30 mm by mechanical limit.

[0057] In the above solution, the gap of the detection roller 1 can be adjusted by setting the height of the mechanical limit device 5. When the adjusted gap is smaller, the size of the foreign matter 13 that can be detected is smaller.

[0058] In this embodiment, a mechanical limiter is provided below the detection roller 1. The distance between the detection roller 1 and the cotton collector 11 is adjusted according to the production situation, so that small rubber blocks that do not affect production can be allowed to enter the pendulum belt 16 to prevent malfunction. In order to prevent the detection roller 1 from being bonded with rock wool fibers, which increases the diameter of the detection roller 1 and causes malfunction, a brush roller 6 is installed in front of the detection roller 1 to brush off the rock wool fibers bonded to the detection roller 1.

[0059] According to a further technical solution, a detection roller 1 is provided at one end of the first frame 10, and a counterweight rod 3 is provided at the other end, a limit plate 15 is provided on the counterweight rod 3, and a proximity switch is provided on the limit plate 15;

[0060] It is feasible to provide one proximity switch on the limit plate 15 or to provide a plurality of proximity switches sequentially at set intervals, and proximity switches at different positions can achieve different alarm limits.

[0061] In the above scheme, by setting the proximity switch, according to the triggering of the limit plate, a corresponding alarm signal is issued to realize the alarm before the fault;

[0062] Optionally, both ends of the first frame 10 are connected to the counterweight rod 3, and a hollow hole is provided at the connection position, and the pin 9 passes through the hollow hole and is connected to the first bearing 4, and the first bearing 4 is fixed on the frame of the external fixed bracket 8;

[0063] In some embodiments, bristles are installed on the brush roller 6, and the top of the bristles is in contact with the detection roller 1; the brush roller 6 is used to remove the foreign matter 13 stuck on the detection roller 1, the direction of the brush roller 6 is opposite to the direction of the detection roller 1, and the rotation speed of the brush roller 6 is greater than the rotation speed of the detection roller 1; the brush roller 6 is connected to a brush roller transmission mechanism 7 for providing power for the brush roller 6 to rotate;

[0064] Specifically, a fifth support rod is further provided on the fixed bracket 8, which is used to provide a support platform for setting the brush roller transmission mechanism 7;

[0065] The above devices, such as Figure 3 to Figure 4 As shown, during the normal fiber-forming process, the primary felt (rock wool) will be evenly spread on the cotton collector 11. When a foreign object 13 (such as a useless rubber block) enters the No. 1 belt 17, it will pass under the detection roller 1. The running diameter of the detection roller 1 becomes larger, and the detection roller 1 drives the first frame 10 to rotate, driving the counterweight rod 3 to flip downward. The counterweight rod 3 is connected to the limit plate 15 and flips downward at the same time, touching the proximity switch corresponding to the forced stop detection point. The proximity switch sends an alarm signal, and the cotton collector 11 and the No. 1 belt 17 stop urgently.

[0066] In this embodiment, it is possible to detect and alarm large foreign objects when the rock wool is fiberized, effectively solving the problem of mechanical failure caused by large foreign objects (useless rubber blocks) entering the pendulum belt 16, reducing the workload, and effectively reducing the equipment failure rate, improving work efficiency, reducing production losses caused by fault maintenance, reducing maintenance costs, and reducing the amount of fault maintenance.

[0067] Example 2

[0068] Based on Example 1, this embodiment provides a foreign body detection alarm method of a detection alarm device for foreign bodies dropped during rock wool fiberization based on Example 1, which can be implemented in a signal processing terminal, including the control of a roller brush and a detection roller, and the steps are as follows:

[0069] Step 1, first start the detection roller 1, and test whether the rotation speed of the detection roller 1 reaches the linear speed of the cotton collector 11;

[0070] Step 2: When the detection roller 1 reaches the linear speed of the cotton collector 11, the brush roller 6 is turned on, and the brush roller 6 and the detection roller 1 are controlled to rotate in opposite directions;

[0071] Step 3, controlling the brush roller 6 to rotate at a speed greater than the detection roller 1;

[0072] Step 4: When the detection process is completed or the cotton collector stops working, the detection roller 1 and the brush roller 6 are controlled to stop rotating.

[0073] A further technical solution is to obtain detection signals of the position sensor and the proximity switch. When the position sensor first detects a trigger signal, that is, the first frame 10 is lifted, and then the proximity switch detects a trigger signal, it is determined that a foreign object has passed through, and a first alarm message is issued; otherwise, only when the proximity switch detects a trigger signal, a second alarm message is issued; when the position sensor detects a trigger signal, but the proximity switch does not detect a trigger signal, a third alarm message is issued;

[0074] When the first alarm message and the second alarm message are issued, emergency shutdown is performed; when the third alarm message is issued, attention should be paid to eliminate whether the proximity switch is faulty;

[0075] In this embodiment, through the redundant setting of the detection switch, when the first alarm message is issued, it is to determine that a foreign object beyond the safety range has passed; when the second alarm message is issued, it is determined that a foreign object is detected and the position sensor may be faulty; when the third alarm message is issued, it may be that a smaller foreign object has passed, or the proximity switch has failed. When the third alarm message is issued multiple times, the proximity switch needs to be checked.

[0076] The above description is only a preferred embodiment of the present disclosure and is not intended to limit the present disclosure. For those skilled in the art, the present disclosure may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present disclosure shall be included in the protection scope of the present disclosure.

[0077] Although the above describes the specific implementation methods of the present disclosure in conjunction with the accompanying drawings, it is not intended to limit the scope of protection of the present disclosure. Technical personnel in the relevant field should understand that on the basis of the technical solution of the present disclosure, various modifications or variations that can be made by those skilled in the art without creative work are still within the scope of protection of the present disclosure.

Claims

1. A detection and alarm device for foreign matter dropped during rock wool fiberization, characterized in that: It includes a fixed bracket, a detection roller, a brush roller and a mechanical limit device arranged on the fixed bracket; The detection roller is rotatably arranged on the fixed bracket through the first bracket, the width of the detection roller is adapted to the width of the rock wool, and is arranged opposite to the rock wool; a mechanical limit device is also arranged on the fixed bracket, which is pressed against the lower end surface of the first bracket, and the gap between the detection roller and the rock wool is controlled by adjusting the height of the mechanical limit device; The brush roller is arranged on the fixed bracket and abuts against the outer side of the oblique lower part of the detection roller. The rotation directions of the detection roller and the brush roller are opposite.

2. A detection and alarm device for foreign matter dropped during rock wool fiberization as claimed in claim 1, characterized in that: The detection roller is arranged on the upper arc section of the rock wool conveyor belt that sends out the cotton collector, and the direction of the force exerted by the foreign matter on the detection roller is obliquely upward.

3. The detection and alarm device for foreign matter dropped during rock wool fiberization according to claim 1, characterized in that: The detection roller is connected with a detection roller transmission mechanism, which is fixed on the first frame and provides power for the rotation of the detection roller, so that the linear speed of the detection roller is the same as the linear speed of the cotton collector.

4. The detection and alarm device for foreign matter dropped during rock wool fiberization according to claim 1, characterized in that: The first frame is a quadrilateral frame structure composed of a plurality of brackets, and can be rotatably fixed on the top of the fixed bracket through a bearing; two side brackets opposite to the first frame can be rotatably connected to the two ends of the detection roller.

5. The detection and alarm device for foreign matter dropped during rock wool fiberization according to claim 1, characterized in that: A second support rod is arranged below the first frame on the fixed bracket; a third support rod is fixedly connected to the bottom of the second support rod; a brush roller is arranged on the third support rod, and the upper end surface of the second support rod faces the lower end surface of the bracket of the first frame; a mechanical limit device is arranged on the second support rod near the detection roller; Alternatively, bristles are installed on the brush roller, and the top of the bristles is in contact with the detection roller; the direction of the brush roller is opposite to the direction of the detection roller, and the rotation speed of the brush roller is greater than the rotation speed of the detection roller; the brush roller is connected to a brush roller transmission mechanism for providing power for the brush roller to rotate; A fifth support rod is also provided on the fixed bracket, which is used to provide a support platform for arranging the brush roller transmission mechanism.

6. The detection and alarm device for foreign matter dropped during rock wool fiberization according to claim 1, characterized in that: A position sensor is provided on the upper end surface of the mechanical limit device, which is used to detect whether the first frame has left the mechanical limit device; Or / and, according to the actual production situation of rock wool, determine the thickness or fluffiness of the produced rock wool and control the height of the mechanical limit device; Or / and, adjust the height of the mechanical limit device so that the distance between the rock wool conveyor belt transmitting the rock wool and the detection roller is not greater than the distance between the pendulum belts.

7. A detection and alarm device for foreign matter dropped during rock wool fiberization as claimed in claim 6, characterized in that: The detection alarm device is also provided with a signal processing terminal and a display device, which are respectively connected to the display device and the position sensor. When the position sensor detects that the first frame has left the mechanical limit device, it is determined that a foreign object has passed.

8. A detection and alarm device for foreign matter dropped during rock wool fiberization as claimed in claim 7, characterized in that: A detection roller is arranged at one end of the first frame, and a counterweight rod is arranged at the other end. A limit plate is arranged on the counterweight rod, and a proximity switch is arranged on the limit plate. The proximity switch is communicatively connected with the signal processing terminal.

9. A foreign body detection and alarm method for a foreign body detection and alarm device for dropping foreign bodies during rock wool fiberization according to any one of claims 1 to 8, characterized in that: Here are the steps: Start the detection roller first, and test whether the speed of the detection roller reaches the linear speed of the cotton collector; When the detection roller reaches the linear speed of the cotton collector, the brush roller is turned on, and the brush roller and the detection roller are controlled to rotate in opposite directions; Control the brush roller to rotate at a speed greater than the detection roller; When the detection process is completed or the cotton collector stops working, the detection roller and the brush roller are controlled to stop rotating.

10. The foreign body detection alarm method according to claim 9, characterized in that: Acquire detection signals from the position sensor and the proximity switch. When the position sensor first detects a trigger signal and then the proximity switch detects a trigger signal, it is determined that a foreign object has passed through and a first alarm message is issued. Otherwise, the second alarm message is issued only when the proximity switch detects the trigger signal; the third alarm message is issued when the position sensor detects the trigger signal but the proximity switch does not detect the trigger signal.

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