Material strip fracture detection device of granulator

Abstract

The utility model discloses a material strip breakage detection device of a pelletizer, which comprises a rotating piece which is arranged on a material strip transmission path through a bearing seat and can be driven by a dragged material strip to rotate, a sensor which is positioned beside the rotating piece and is used for detecting whether the rotating piece rotates or not, a controller and an alarm, the controller is electrically connected with the sensor and used for receiving a detection signal of the sensor so as to send out a control signal, and the controller is electrically connected with the alarm and used for controlling the alarm to work. In the material strip conveying process, the rotating piece is driven by a material strip to move. When the material strip is broken, the rotating part loses the driving of the material strip and stops moving, at the moment, the sensor cannot detect the movement of the rotating part, a signal is sent to the controller, and the controller controls the alarm to give an alarm after receiving the signal, so that a worker can handle broken strips in time, and material strip accumulation and idle running of the device are prevented.

Description

Technical Field

[0001] This utility model relates to the field of granulators, specifically to a granulator strip breakage detection device. Background Technology

[0002] A pelletizer includes an extrusion unit, a cooling unit, a drying unit, and a pelletizing unit. During production, the extrusion unit melts the raw material, extrudes it into strips through a die, and then traction it through a cooling unit for cooling, followed by drying in a drying unit, and finally pelletizing it to obtain pellets. However, the strips are drawn sequentially through the cooling, drying, and pelletizing units. Due to the long transport path and the influence of gravity, the strips are prone to breakage during this process. Especially in the drying stage, high-powered exhaust fans are often used to quickly remove moisture from the strip surface, and the resulting negative pressure further exacerbates the risk of breakage. Once a strip breaks, not only does the continuously produced strips from the extrusion unit fall and accumulate, forming waste, but the equipment also becomes ineffective. Utility Model Content

[0003] Based on this, and in view of the above-mentioned technical problems, the purpose of this utility model is to provide a material strip breakage detection device for a granulator.

[0004] The objective of this utility model can be achieved through the following technical solutions:

[0005] A pelletizer strip breakage detection device is provided. The pelletizer includes, in sequence, a crushing device for crushing raw materials, an extrusion device for forming the crushed raw materials into strips and extruding the strips, a water tank for cooling the arriving strips, a drying device for drying the cooled strips, a pelletizing device for pelletizing the strips, and a storage device for storing the pellets. It also includes a strip detection device for detecting whether the strips are broken. This strip detection device includes a rotating component mounted on the strip's transport path via a bearing seat and capable of being rotated by the pulled strip, and a sensor located next to the rotating component for detecting whether the rotating component is rotating. The device also includes a controller and an alarm. The controller is electrically connected to the sensor to receive the sensor's detection signal and issue a control signal. The controller is also electrically connected to the alarm to activate the alarm.

[0006] Using the above technical solution, during the material bar conveying process, the rotating component is driven by the material bar. When the material bar breaks, the rotating component loses its drive and stops moving. At this time, the sensor cannot detect the movement of the rotating component and sends a signal to the controller. Upon receiving the signal, the controller activates the alarm, allowing staff to promptly handle broken bars and prevent material bar accumulation and equipment idling.

[0007] In a specific embodiment of this utility model, the sensor is a photoelectric tachometer, a laser tachometer, or an electromagnetic induction tachometer.

[0008] In a specific embodiment of this utility model: the rotating component consists of a rotating shaft and a roller sleeved on the rotating shaft. One end of the rotating shaft is mounted on a bearing seat, and baffles are respectively provided on both sides of the roller on the rotating shaft.

[0009] In a specific embodiment of this utility model: the drying device includes a pre-drying mechanism, a suction mechanism, and a blower mechanism arranged sequentially along the material strip's travel path, and the rotating component is located between the suction mechanism and the blower mechanism.

[0010] In a specific embodiment of this utility model: the pre-drying mechanism includes a first frame and a hollow shell with openings on both sides mounted on the first frame. Inside the shell, there is a vibrating roller assembly for removing moisture from the surface of the material strip by vibration, and brushes on both sides of the vibrating roller assembly for supporting and cleaning the material strip.

[0011] In a specific embodiment of this utility model: the suction mechanism includes a second frame and a suction box mounted on the second frame. The upper surface of the suction box has a plurality of suction holes. The material strip passes through the top of the suction box. An exhaust fan is connected to one side of the suction box. The bearing seat is mounted at the front end of the second frame.

[0012] In a specific embodiment of this utility model: the blower mechanism includes a water receiving trough and a blower shroud located above the water receiving trough. There is a material passage gap between the water receiving trough and the blower shroud for the material strip to pass through. The blower shroud has multiple air outlets facing the material strip downwards. A heater and a blower are connected to one side of the blower shroud.

[0013] In summary, this invention uses a moving strip to drive a rotating component, and a sensor detects the rotating component. When the strip breaks and causes the rotating component to stop, the sensor sends a signal to the controller, which triggers an alarm. This allows workers to handle the broken strip situation in a timely manner, preventing the strip from accumulating and the equipment from running idle. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings.

[0015] Figure 1 This is a schematic diagram of the structure of a material strip breakage detection device for a granulator according to the present invention;

[0016] Figure 2 This is a top view of the present invention;

[0017] Figure 3 yes Figure 2Enlarged view of point A in the middle;

[0018] Figure 4 yes Figure 2 Enlarged view of point B in the middle;

[0019] Figure 5 yes Figure 1 Enlarged view of point C in the middle. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1 and Figure 2 As shown, this utility model is a material strip breakage detection device for a granulator. The granulator includes, in sequence, a crushing device 1 for crushing raw materials, an extrusion device 2 for forming crushed raw materials into strips 9 and extruding the strips 9, a water tank 3 for cooling the arriving strips 9, a drying device 20 for drying the cooled strips 9, a pelletizing device 5 for pelletizing the strips 9, and a storage device 6 for storing the pellets.

[0022] The drying device 20 includes a pre-drying mechanism 21, a suction mechanism 22, and a blower mechanism 23 arranged sequentially along the travel path of the material bar 9.

[0023] Combination Figure 3 As shown, in this embodiment, the pre-drying mechanism 21 includes a first frame 211 and a hollow housing 212 with openings on both sides mounted on the first frame 211. Inside the housing 212 is a vibrating roller assembly 213 that removes moisture from the surface of the strip 9 by vibration, and brushes 214 on both sides of the vibrating roller assembly 213 for supporting and cleaning the strip 9. The vibrating roller assembly 213 includes a lower vibrating roller and an upper vibrating roller located above the lower vibrating roller, with a material passage gap between the upper and lower vibrating rollers for the strip to pass through. During operation, after the end of the strip is pulled out, it enters through the opening on the rear side of the housing, passes through the rear brush, through the material passage gap of the vibrating roller assembly, passes through the front brush, and extends out of the front opening of the housing. In this way, the high-frequency vibration of the vibrating roller assembly removes most of the moisture from the surface of the strip, achieving initial drying. Simultaneously, the brushes on both sides not only support the strip but also remove impurities from its surface, ensuring a smooth and clean surface.

[0024] like Figure 1 , Figure 2 and Figure 4 As shown, in this embodiment, the suction mechanism 22 includes a second frame 221 and a suction box 222 mounted on the second frame 221. Multiple suction holes 223 are distributed on the upper surface of the suction box 222. The material strip 9 passes through the top of the suction box 222. A suction fan 224 is connected to one side of the suction box 222. With this structure, when the material strip passes through the top of the suction box, the suction holes 223 are directly aligned with the material strip 9, which can quickly remove moisture from the material strip 9, avoid moisture residue, and improve drying efficiency.

[0025] like Figure 1 , Figure 2 and Figure 5 As shown, in this embodiment, the blower mechanism 23 includes a water receiving tank 231 and a blower hood 232 located above the water receiving tank 231. A material passage gap is provided between the water receiving tank 231 and the blower hood 232 for the material strip 9 to pass through. The blower hood 232 has multiple air outlets 233 facing downwards towards the material strip 9. A heater and a blower 234 are connected to one side of the blower hood. After the end of the material strip passes through the material passage gap, it enters the next process. The blower hood blows air onto the surface of the material strip, causing it to dry quickly. Furthermore, the addition of a heater ensures that the blown air has a higher temperature, further accelerating moisture evaporation and improving drying efficiency.

[0026] like Figure 1 , Figure 2 and Figure 4 As shown, the system also includes a strip detection device 10 for detecting whether the strip 9 is broken. The strip detection device 10 includes a rotating component 11 mounted between the suction mechanism 22 and the blower mechanism 23 via a bearing seat 16 and capable of being driven to rotate by the strip 9; and a sensor 12 located next to the rotating component 11 for detecting whether the rotating component 11 is rotating. It also includes a controller 13 and an alarm 14. The controller 13 is electrically connected to the sensor 12 to receive signals from the sensor 12. The controller 13 is also electrically connected to the alarm 14 to control the alarm 14 to operate. Thus, when the strip 9 breaks, the rotating component 11 loses its drive and stops moving. At this time, the sensor 12 cannot detect the rotation signal of the rotating component 11 and sends a signal to the controller 13. Upon receiving the signal from the sensor, the controller 13 controls the alarm 14 to sound. This allows workers to handle the situation immediately, effectively preventing strip accumulation and equipment idling. The bearing seat 16 is installed at the front end of the second frame.

[0027] In this embodiment, sensor 12 is a photoelectric tachometer, a laser tachometer, or an electromagnetic induction tachometer.

[0028] In this embodiment, the rotating component 11 consists of a rotating shaft 111 and a roller 112 sleeved on the rotating shaft 11. One end of the rotating shaft 11 is mounted on a bearing seat 16. Baffles 113 are respectively provided on the rotating shaft on both sides of the roller.

[0029] The above describes a material strip breakage detection device for a granulator according to this utility model. During operation, the raw material is first crushed by the crushing device 1, then melted and extruded by the extrusion device 2. The extruded material strip 9 is first cooled by the water tank 3, then dried by the drying device 20, and finally granulated by the cutting device 5 to obtain the desired granules. During the drying process, the material strip 9 first undergoes high-frequency vibration by the vibrating roller assembly, effectively removing most of the surface moisture for initial drying. Subsequently, the exhaust fan generates negative pressure, causing the suction box to draw in residual moisture and impurities from the surface of the material strip, further reducing surface moisture. Then, the material strip 9 passes around the rotating component 11. Due to the friction between the material strip 9 and the rotating component 11, the rotating component 11 is driven to rotate by the moving material strip 9. At this time, the sensor 12 installed near the rotating component 11 monitors its motion. When the rotating component 11 is detected to be rotating, the sensor 12 remains silent and does not send any alarm signal to the controller 13. Controller 13 determines that the system is operating normally based on the absence of sensor signals, and therefore will not trigger alarm 14, which remains silent. Finally, the blower operates, and due to the presence of a heater, the air blown out by the blower hood is hot air, further drying the arriving material strips to ensure their surface is dry. When material strip 9 breaks, the rotating component 11 loses its drive and stops moving. At this time, sensor 12 cannot detect the rotation signal of the rotating component 11 and sends an abnormal signal to controller 13. Controller 13 then activates alarm 14 to issue a warning, allowing staff to promptly address the material breakage situation and effectively prevent material strip accumulation and equipment idling.

[0030] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A pelletizer strip breakage detection device, the pelletizer comprising, in sequence, a crushing device for crushing raw materials, an extrusion device for forming the crushed raw materials into strips and extruding the strips, a water tank for cooling the arriving strips, a drying device for drying the cooled strips, a pelletizing device for cutting the strips into pellets, and a storage device for storing the pellets; characterized in that, It also includes a strip detection device for detecting whether the strip is broken. The strip detection device includes a rotating component mounted on the transmission path of the strip via a bearing seat and capable of being rotated by the traction strip, and a sensor located next to the rotating component for detecting whether the rotating component is rotating. It also includes a controller and an alarm. The controller is electrically connected to the sensor for receiving the detection signal from the sensor and issuing a control signal. The controller is also electrically connected to the alarm for controlling the alarm to operate.

2. The pelletizer strip breakage detection device according to claim 1, characterized in that, The rotating component consists of a rotating shaft and a roller sleeved on the rotating shaft. One end of the rotating shaft is mounted on a bearing seat, and baffles are respectively provided on both sides of the roller on the rotating shaft.

3. The pelletizer strip breakage detection device according to claim 1, characterized in that, The rotating component consists of a rotating shaft and a roller sleeved on the rotating shaft. One end of the rotating shaft is mounted on a bearing seat, and baffles are respectively provided on both sides of the roller on the rotating shaft.

4. The pelletizer strip breakage detection device according to claim 1, characterized in that, The drying device includes a pre-drying mechanism, a suction mechanism, and a blower mechanism arranged sequentially along the material strip's travel path, with the rotating component located between the suction mechanism and the blower mechanism.

5. The pelletizer strip breakage detection device according to claim 4, characterized in that, The pre-drying mechanism includes a first frame and a hollow shell with openings on both sides mounted on the first frame. Inside the shell, there is a vibrating roller assembly for removing moisture from the surface of the material strip by vibration, and brushes on both sides of the vibrating roller assembly for supporting and cleaning the material strip.

6. The pelletizer strip breakage detection device according to claim 5, characterized in that, The suction mechanism includes a second frame and a suction box mounted on the second frame. The upper surface of the suction box has multiple suction holes. The material strip passes through the top of the suction box. An exhaust fan is connected to one side of the suction box. The bearing seat is mounted at the front end of the second frame.

7. The pelletizer strip breakage detection device according to claim 6, characterized in that, The blower mechanism includes a water receiving trough and a blower shroud located above the water receiving trough. There is a material passage gap between the water receiving trough and the blower shroud for the material strip to pass through. The blower shroud has multiple air outlets facing the material strip downwards. A heater and a blower are connected to one side of the blower shroud.

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