Fire stopping device of reprocessed plastic granulator

Abstract

The utility model discloses a reprocessed plastic pelletizer fire stopping device, which is connected between a pelletizer and a waste gas treatment system, the pelletizer comprises a gas outlet pipe, the waste gas treatment system comprises an environment-friendly air pipe, the environment-friendly air pipe comprises a connecting pipe, a temperature detection piece, at least one spraying assembly, three valve pieces and a control assembly, the connecting pipe is provided with three opening ends, and the temperature detection piece is connected with the temperature detection piece. The temperature detection part is arranged in the connecting pipe and used for detecting the temperature in the connecting pipe, the spraying assembly comprises a spraying head and a switch part, the spraying head is connected to the inner wall of the connecting pipe, the switch part is connected to the spraying head and used for opening or closing the spraying head, and the three valve parts are connected to the three opening ends of the connecting pipe respectively. The control assembly is used for opening or closing the open end of the connecting pipe and electrically connected with the temperature detection piece, the switch piece and the three valve pieces. The utility model can solve the problem that a series of fire disasters are easily caused by greasy dirt encountering high temperature or sparks.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic recycling, in particular to a fire stopping device for a recycled plastic granulator. Background Art

[0002] Recycling granulation is a recycling method that converts waste plastics into granules through a granulation process.

[0003] For example, the Chinese utility model patent with application number: CN201820582234.5 is named: A recycled plastic granulator, including a frame, a screw extruder and a granulator, a melting chamber is arranged above the feed port of the screw extruder, a grid plate is arranged in the melting chamber, four support columns protrude from the left and right ends of the front and rear side walls of the melting chamber, and the support columns are connected to the base frame installed on the frame through springs, hot air inlets are arranged on both sides of the discharge pipe of the melting chamber, and air outlets are arranged at the top of the melting chamber at the corresponding positions of the hot air inlet, a vibration motor is arranged at the center of the front and rear side walls of the melting chamber, a stirring shaft is arranged in the melting chamber, and a number of stirring paddles are arranged on the stirring shaft. The granulator realizes the rapid melting of waste pellets through vibration and hot air, and directly enters the screw extruder for extrusion under the push of the stirring paddle body, and then the pelletizer completes the pelletizing. However, there is often oil stain left after the exhaust gas is cooled in the environmental protection air duct for exhaust gas collection, and the oil stain is very likely to cause a fire when it encounters high temperature or sparks.

[0004] Therefore, there is an urgent need for a fire-stopping device for a recycled plastic granulator to solve the problem in the prior art that the oil stains left in the environmental protection air duct can easily cause a fire when encountering high temperature or sparks, thereby causing a series of fires. Utility Model Content

[0005] In view of this, it is necessary to provide a fire-stopping device for a recycled plastic granulator to solve the technical problem in the prior art that the oil stains left in the environmental protection air duct can easily cause fires when encountering high temperature or sparks, thereby causing a series of fires.

[0006] In order to achieve the above technical purpose, the technical solution of the utility model provides a fire-stopping device for a recycled plastic granulator, which is connected between the granulator and the exhaust gas treatment system. The granulator includes an exhaust pipe, and the exhaust gas treatment system includes an environmental protection air duct, including:

[0007] A connecting pipe having three open ends and connected to both the environmental protection air duct and the air outlet pipe;

[0008] A temperature detection component, built into the connecting pipe, for detecting the temperature inside the connecting pipe;

[0009] At least one spray assembly, including a spray head and a switch, wherein the spray head is connected to the inner wall of the connecting pipe, and the switch is connected to the spray head and is used to open or close the spray head;

[0010] Three valve members, the three valve members are respectively connected to the three opening ends of the connecting pipe, and are used to open or close the opening ends of the connecting pipe;

[0011] The control component is electrically connected to the temperature detection component, the switch component and the three valve components.

[0012] Furthermore, the connecting pipe includes a horizontal section and a vertical section, the horizontal section and the vertical section are vertically arranged and interconnected, the two ends of the horizontal section are respectively connected to the environmental protection air duct, the vertical section is connected to the air outlet pipe, and the two valve components are respectively arranged at the connection between the horizontal section and the environmental protection air duct, and the other valve component is arranged at the connection between the vertical section and the air outlet pipe.

[0013] Furthermore, the valve component includes a ventilation plate, a sealing plate and a motor. The ventilation plate is arranged perpendicular to the axis of the horizontal section or the vertical section and is connected to the inner wall of the horizontal section or the vertical section and is provided with ventilation holes. The sealing plate is arranged relative to the ventilation holes and is rotatably connected to the ventilation plate. The motor is connected to the connecting pipe, and its output shaft is connected to the sealing plate. The motor is electrically connected to the control component for driving the sealing plate to rotate relative to the ventilation plate to open or close the ventilation holes.

[0014] Furthermore, the area of ​​the sealing plate is larger than the area of ​​the ventilation hole.

[0015] Furthermore, the sealing plate is provided with a slide groove along its rotation axis, the output shaft of the motor is provided with a slot relative to the slide groove, and the valve member also includes a sliding bar, which is slidably built into the slide groove and can be slidably inserted into the slot, so as to detachably connect the sealing plate to the output shaft of the motor.

[0016] Furthermore, the valve member also includes an electromagnet, which is fixedly built into the bottom of the slot and can generate a magnetic adsorption force so that the sliding bar is stuck in the slot, and the electromagnet is electrically connected to an external power source.

[0017] Furthermore, the valve member also includes a rotating part, which is rotatably connected to the connecting pipe and is transmission-connected to the sealing plate. The rotating part rotates around its own axis and can drive the sealing plate to rotate relative to the ventilation plate.

[0018] Furthermore, the connecting pipe is provided with a rotating groove and a through groove, the through groove is communicated with the rotating groove, the sealing plate is rotatably embedded in the rotating groove, the rotating part includes an external gear and a rotating gear, the external gear is fixedly sleeved on the sealing plate, the rotating gear is rotatably connected to the inner wall of the rotating groove and meshes with the external gear, and the rotating gear is placed outside the connecting pipe through the through groove.

[0019] Furthermore, the valve member further includes a sealing portion, which is disposed between the rotating gear and an inner wall of the rotating groove and is connected to the rotating gear.

[0020] Furthermore, it also includes a water tank, the interior of which is connected to the liquid inlet ends of the plurality of spray heads.

[0021] Compared with the prior art, the beneficial effects of the utility model include: the outlet pipe of the granulator is connected to the environmental protection air duct of the waste gas treatment system through a connecting pipe, the connecting pipe has three open ends, the temperature detection component is built into the connecting pipe, used to detect the temperature in the connecting pipe, at least one spray head is built into the connecting pipe and controlled by the switch component, and the three valve components are respectively used to control the opening or closing of the three open ends of the connecting pipe, wherein the control component is electrically connected to the temperature detection component, the switch component and the three valve components, and is used to control the opening or closing of the switch component and the valve component according to the temperature detected by the temperature detection component. Compared with the prior art, the device detects the temperature by setting a temperature detection component, and uses the valve component to achieve the connection or isolation between the connecting pipe and the outlet pipe and the environmental protection air duct according to the control of the control component, and then extinguishes the fire in the connecting pipe through the spray of the spray head, thereby isolating and extinguishing the fire, preventing the fire from spreading further, and can solve the technical problem that the oil stains left in the environmental protection air duct are very likely to cause fires when encountering high temperature or sparks in the prior art, thereby causing a series of fires. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional structural schematic diagram of a fire-stop device of a recycled plastic granulator provided by an embodiment of the utility model connected with an air outlet pipe and an environmental protection air duct;

[0023] Figure 2 Figure 1 A local enlarged schematic diagram of the middle A;

[0024] Figure 3 It is a cross-sectional structural schematic diagram of a fire-stop device of a recycled plastic granulator provided by an embodiment of the utility model connected with an air outlet pipe and an environmental protection air duct;

[0025] Figure 4 It is a three-dimensional structural schematic diagram of the connection between the connecting pipe and the valve member provided in the embodiment of the utility model;

[0026] Figure 5 It is a cross-sectional structural schematic diagram of the connection between the connecting pipe and the valve member provided in the embodiment of the utility model. DETAILED DESCRIPTION

[0027] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the present application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0028] See also Figures 1 to 4 The utility model provides a fire stopping device for a raw plastic granulator, which is connected between the granulator and the exhaust gas treatment system. The granulator includes an exhaust pipe 1, and the exhaust gas treatment system includes an environmental protection air duct 2, including: a connecting pipe 3, a temperature detecting component 4, at least one spray component 5, three valve components 6 and a control component. The connecting pipe 3 has three open ends and is connected to the environmental protection air duct 2 and the exhaust pipe 1. The temperature detecting component 4 is built into the connecting pipe 3 for detecting the temperature in the connecting pipe 3. The spray component 5 includes a spray head 51 and a switch component 52. The spray head 51 is connected to the inner wall of the connecting pipe 3. The switch component 52 is connected to the spray head 51 for opening or closing the spray head 51. The three valve components 6 are respectively connected to the three open ends of the connecting pipe 3 for opening or closing the open end of the connecting pipe 3. The control component is electrically connected to the temperature detecting component 4, the switch component 52 and the three valve components 6.

[0029] In this device, the air outlet pipe 1 of the granulator is connected to the environmental protection air duct 2 of the exhaust gas treatment system through a connecting pipe 3. The connecting pipe 3 has three open ends and is T-shaped. The temperature detection component 4 is built into the connecting pipe 3 for detecting the temperature in the connecting pipe 3. At least one spray head 51 is built into the connecting pipe 3 and controlled by the switch component 52. The three valve components 6 are respectively used to control the opening or closing of the three open ends of the connecting pipe 3. The control component is electrically connected to the temperature detection component 4, the switch component 52 and the three valve components 6, and is used to control the opening or closing of the switch component 52 and the valve component 6 according to the temperature detected by the temperature detection component 4.

[0030] Compared with the prior art, the device detects the temperature by setting a temperature detection component 4, and uses the valve component 6 to achieve the connection or isolation between the connecting pipe 3 and the exhaust pipe 1 and the environmental protection air duct 2 according to the control of the control component, and then extinguishes the fire in the connecting pipe 3 by spraying the sprinkler head 51, thereby isolating and extinguishing the fire to prevent the fire from spreading further. It can solve the technical problem in the prior art that the oil stains left in the environmental protection air duct 2 are very likely to cause a fire when encountering high temperature or sparks, thereby causing a series of fires.

[0031] Furthermore, the air outlet pipe 1 of the granulator in the present device is usually connected to the waste gas treatment system to recover and treat the high-temperature gas generated during the granulation process. Specifically, the environmental protection air duct 2 in the present device is disconnected at the top of the air outlet pipe 1, and the connecting pipe 3 is arranged between the two disconnected sections of the environmental protection air duct 2, and the two open ends of the connecting pipe 3 are respectively connected to the two sections of the environmental protection air duct 2, and the other open end of the connecting pipe 3 is connected to the air outlet pipe 1. Here, the air outlet pipe 1 and the environmental protection air duct 2 are conventional settings well known to technical personnel in this field and will not be described in detail.

[0032] Furthermore, the material of the connecting pipe 3 in the present device is a metal that is common and easy to purchase on the market, and the size of the pipe diameter can be changed according to production needs. The temperature detection component 4 is a temperature sensor that is common and easy to purchase on the market. The control component is a PLC that is common and easy to purchase on the market. The switch component 52 is a common and easy to purchase solenoid valve. The solenoid valve is electrically connected to the control component to realize the opening or closing of the sprinkler head 51. These are all conventional settings known to those skilled in the art and will not be elaborated on.

[0033] As an implementation mode, the device further comprises a water tank, the interior of which is connected to the liquid inlet ends of the plurality of spray heads 51 .

[0034] Specifically, the liquid inlet end of the sprinkler head 51 in the device can be directly connected to the water pipe, or can be connected to the water pipe through a water tank. Here, the water tank is arranged at a distance from the granulator to store water for fire extinguishing.

[0035] like Figure 1 , Figure 2 As shown, the connecting pipe 3 includes a horizontal section and a vertical section. The horizontal section and the vertical section are vertically arranged and interconnected. The two ends of the horizontal section are respectively connected to the environmental protection air duct 2, and the vertical section is connected to the outlet pipe 1. Two valve components 6 are respectively arranged at the connection between the horizontal section and the environmental protection air duct 2, and the other valve component 6 is arranged at the connection between the vertical section and the outlet pipe 1.

[0036] The arrangement of the horizontal section and the vertical section can not only form a connection with the environmental protection air duct 2 and the exhaust pipe 1, but also effectively separate the granulator from the exhaust gas treatment system, and use the valve member 6 to effectively isolate the spread of fire when a fire occurs.

[0037] like Figures 3 to 5 As shown, the valve member 6 includes a ventilation plate 61 , a sealing plate 62 , a motor 63 , a sliding bar 64 , an electromagnet 65 , a rotating portion 66 , and a sealing portion 67 .

[0038] Among them, the ventilation plate 61 is arranged perpendicular to the axis of the horizontal section or the vertical section, and is connected to the inner wall of the horizontal section or the vertical section, and is provided with ventilation holes. The sealing plate 62 is arranged relative to the ventilation holes and is rotatably connected to the ventilation plate 61. The motor 63 is connected to the connecting pipe 3, and its output shaft is connected to the sealing plate 62. The motor 63 is electrically connected to the control component, and is used to drive the sealing plate 62 to rotate relative to the ventilation plate 61 to open or close the ventilation holes.

[0039] The ventilation hole can be opened by rotating the sealing plate 62 relative to the ventilation hole, thereby realizing the opening or closing of the valve member 6.

[0040] As an implementation method, Figure 5 As shown, the area of ​​the sealing plate 62 is larger than the area of ​​the ventilation hole.

[0041] Specifically, in the present application, the sealing plate 62 is a circular plate, and a connecting hole is opened on the sealing plate 62. The area of ​​the connecting hole is smaller than the area of ​​the ventilation hole, so that the sealing plate 62 can completely cover the ventilation hole after rotating a certain angle.

[0042] As another implementation method, Figure 5 As shown, the sealing plate 62 is provided with a slide groove along its rotation axis, the output shaft of the motor 63 is provided with a slot relative to the slide groove, the sliding bar 64 is slidably built into the slide groove, and can be slidably inserted in the slot, so as to detachably connect the sealing plate 62 to the output shaft of the motor 63.

[0043] When the sliding bar 64 is inserted into the slot, the rotation of the output shaft of the motor 63 can drive the sealing plate 62 to rotate simultaneously through the sliding bar 64. When the sliding bar 64 is not inserted into the slot, the rotation of the output shaft of the motor 63 cannot be transmitted to the sealing plate 62, so that the sealing plate 62 can be connected to the sliding bar 64 by controlling the sliding of the sliding bar 64.

[0044] As an implementation method, Figure 5 As shown, the electromagnet 65 is fixedly built into the bottom of the slot and can generate a magnetic adsorption force so that the sliding bar 64 is stuck in the slot, and the electromagnet 65 is electrically connected to an external power source.

[0045] When the electromagnet 65 is energized, it can generate a magnetic adsorption force for adsorbing the sliding bar 64, thereby clamping the sliding bar 64 in the slot. When the power is off, the sliding bar 64 automatically falls into the slide groove due to its own weight. At this time, the sealing plate 62 is separated from the output shaft of the motor 63. The user can control the opening or closing of the valve member 6 by rotating the sealing plate 62. Therefore, when the power is off, the user can also control the valve member 6 manually to improve the safety and stability of the device.

[0046] As another implementation method, Figure 5As shown, the rotating part 66 is rotatably connected to the connecting pipe 3 and is transmission-connected to the sealing plate 62 . The rotating part 66 rotates around its own axis and can drive the sealing plate 62 to rotate relative to the ventilation plate 61 .

[0047] The rotating portion 66 is rotatably connected to the connecting pipe 3 for conveniently controlling the rotation of the sealing plate 62 manually.

[0048] As an implementation method, Figure 5 As shown, the connecting pipe 3 is provided with a rotating groove and a through groove, the through groove is connected with the rotating groove, the sealing plate 62 is rotatably embedded in the rotating groove, the rotating part 66 includes an external gear 661 and a rotating gear 662, the external gear 661 is fixedly sleeved on the sealing plate 62, the rotating gear 662 is rotatably connected to the inner wall of the rotating groove and meshes with the external gear 661, and the rotating gear 662 is placed outside the connecting pipe 3 through the through groove.

[0049] The rotating part 66 is composed of an outer gear 661 and a rotating gear 662, and is externally mounted on the connecting tube 3 through a through-groove portion. The user can manually control the rotating gear 662 to rotate when the power is off.

[0050] As another implementation method, Figure 5 As shown, the sealing portion 67 is disposed between the rotating gear 662 and the inner wall of the rotating groove, and is connected to the rotating gear 662 .

[0051] The sealing portion 67 is provided to form a seal between the rotating gear 662 and the inner wall of the rotating groove to reduce the overflow of exhaust gas.

[0052] Furthermore, the sealing portion 67 here is an elastic sealing gasket that is common and easy to purchase on the market. This is a conventional setting known to those skilled in the art and will not be described in detail.

[0053] The specific working process of the utility model is that the outlet pipe 1 of the granulator is connected to the environmental protection air duct 2 of the waste gas treatment system through a connecting pipe 3, the connecting pipe 3 has three open ends, the temperature detection component 4 is built into the connecting pipe 3, and is used to detect the temperature in the connecting pipe 3, at least one spray head 51 is built into the connecting pipe 3, and is controlled by the switch component 52, and the three valve components 6 are respectively used to control the opening or closing of the three open ends of the connecting pipe 3, wherein the control component is electrically connected to the temperature detection component 4, the switch component 52 and the three valve components 6, and is used to control the opening or closing of the switch component 52 and the valve component 6 according to the temperature detected by the temperature detection component 4. Compared with the prior art, the device detects the temperature by setting the temperature detection component 4, and uses the valve component 6 according to the control of the control component to achieve the connection or isolation between the connecting pipe 3 and the outlet pipe 1 and the environmental protection air duct 2, and then extinguishes the fire in the connecting pipe 3 by spraying the spray head 51, thereby isolating and extinguishing the fire to prevent the fire from spreading further.

[0054] During use, if the remaining oil stains are ignited and a fire occurs, the temperature detection component 4 first transmits an electrical signal to the control component, and then the control component transmits the signal to the motor 63 and the switch component 52 on the valve component 6 respectively, and then the motor 63 drives the sealing plate 62 to rotate relative to the ventilation plate 61 and seals the ventilation hole. Finally, the switch component 52 is opened, and the sprinkler head 51 sprays water to extinguish the fire in the connecting pipe 3.

[0055] When a power outage occurs, the magnetic adsorption force of the electromagnet 65 disappears, and the sliding bar 64 slides into the sliding groove under the action of gravity, so that the output shaft of the motor 63 is separated from the sealing plate 62. The user can control the rotation of the rotating gear 662 to drive the sealing plate 62 to rotate relative to the ventilation plate 61, thereby opening or closing the ventilation hole.

[0056] The device, through the above structure, can solve the technical problem in the prior art that the oil stains left in the environmental protection air duct 2 are very likely to cause fire when encountering high temperature or sparks, thereby causing a series of fires.

[0057] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the present invention should be included in the protection scope of the present invention.

Claims

1. A fire-stopping device for a recycled plastic granulator, connected between the granulator and an exhaust gas treatment system, the granulator includes an exhaust pipe, and the exhaust gas treatment system includes an environmental protection air duct, characterized in that: include: A connecting pipe having three open ends and connected to both the environmental protection air duct and the air outlet pipe; A temperature detection component, built into the connecting pipe, for detecting the temperature inside the connecting pipe; At least one spray assembly, including a spray head and a switch, wherein the spray head is connected to the inner wall of the connecting pipe, and the switch is connected to the spray head and is used to open or close the spray head; Three valve members, the three valve members are respectively connected to the three opening ends of the connecting pipe, and are used to open or close the opening ends of the connecting pipe; The control component is electrically connected to the temperature detection component, the switch component and the three valve components.

2. The fire-stopping device for a recycled plastic granulator according to claim 1, characterized in that: The connecting pipe includes a horizontal section and a vertical section, the horizontal section and the vertical section are vertically arranged and connected to each other, the two ends of the horizontal section are respectively connected to the environmental protection air duct, the vertical section is connected to the air outlet pipe, and the two valve components are respectively arranged at the connection between the horizontal section and the environmental protection air duct, and the other valve component is arranged at the connection between the vertical section and the air outlet pipe.

3. The fire-stopping device for a recycled plastic granulator according to claim 2, characterized in that: The valve component includes a ventilation plate, a sealing plate and a motor. The ventilation plate is arranged perpendicular to the axis of the horizontal section or the vertical section, and is connected to the inner wall of the horizontal section or the vertical section, and is provided with ventilation holes. The sealing plate is arranged relative to the ventilation holes and is rotatably connected to the ventilation plate. The motor is connected to the connecting pipe, and its output shaft is connected to the sealing plate. The motor is electrically connected to the control component for driving the sealing plate to rotate relative to the ventilation plate to open or close the ventilation holes.

4. The fire-stopping device for a recycled plastic granulator according to claim 3, characterized in that: The area of ​​the sealing plate is larger than the area of ​​the ventilation hole.

5. The fire-stopping device for a recycled plastic granulator according to claim 3, characterized in that: The sealing plate is provided with a slide groove along its rotation axis, and the output shaft of the motor is provided with a slot relative to the slide groove. The valve member also includes a sliding bar, which is slidably built into the slide groove and slidably inserted into the slot, so as to detachably connect the sealing plate to the output shaft of the motor.

6. The fire-stopping device for a recycled plastic granulator according to claim 5, characterized in that: The valve member further comprises an electromagnet, which is fixedly built into the bottom of the slot and can generate a magnetic adsorption force so that the sliding bar is clamped in the slot, and the electromagnet is electrically connected to an external power source.

7. The fire-stopping device for a recycled plastic granulator according to claim 6, characterized in that: The valve member further comprises a rotating part, which is rotatably connected to the connecting pipe and is transmission-connected to the sealing plate. The rotating part rotates around its own axis and can drive the sealing plate to rotate relative to the ventilation plate.

8. The fire-stopping device for a recycled plastic granulator according to claim 7, characterized in that: The connecting tube is provided with a rotating groove and a through groove, the through groove is communicated with the rotating groove, the sealing plate is rotatably embedded in the rotating groove, the rotating part includes an external gear and a rotating gear, the external gear is fixedly sleeved on the sealing plate, the rotating gear is rotatably connected to the inner wall of the rotating groove and meshes with the external gear, and the rotating gear is placed outside the connecting tube through the through groove.

9. The fire-stopping device for a recycled plastic granulator according to claim 8, characterized in that: The valve member further includes a sealing portion, which is disposed between the rotating gear and an inner wall of the rotating groove and is connected to the rotating gear.

10. The fire-stopping device for a recycled plastic granulator according to claim 1, characterized in that: It also includes a water tank, the interior of which is connected to the liquid inlet ends of the plurality of spray heads.

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