Granulator protection device

Abstract

The utility model discloses a protection device for a granulator, which relates to the technical field of feeder equipment and comprises a base plate, a first driving motor for controlling the granulator to work is mounted on the base plate, a conveying pipe for conveying materials is arranged at the top end of the base plate, and a storage barrel for storing the materials is fixedly mounted above the conveying pipe. An extrusion pipe is fixedly mounted on the outer side of the conveying pipe and used for conveying materials in the storage barrel into the extrusion pipe, and the materials are extruded through the extrusion pipe; when the pressure relief pipe is used, the mode that internal materials can be used for expansion during blocking is adopted, when the materials block and deposit, the materials in the pipe automatically push the sliding push plate in the pressure relief pipe, the movable push frame is made to move outwards, and when the movable push frame moving outwards pushes the button switch, the button switch is pushed to move outwards. At the moment, the first driving motor is controlled to be closed or reversely rotated, and the situation that the equipment is damaged by pressurizing the interior of the equipment due to continuous material treatment is prevented.

Description

Technical Field

[0001] This utility model relates to the field of granulator equipment technology, specifically a granulator protection device. Background Technology

[0002] The statements herein provide only background information related to this invention and do not necessarily constitute prior art.

[0003] In current technology, plastic recycling is generally carried out through extrusion processing, with extruders being one of the main equipment used. Twin-screw extruders are a type of extruder that differs from traditional extruders in that they are driven by two screws.

[0004] In existing technology, when a granulator malfunctions and causes a blockage, the screw in operation needs to be manually handled. This is usually done by shutting down the equipment or reversing the screw. Workers need to shut down or reverse the screw in time to prevent the continuous processing of materials from causing excessive internal pressure and damaging the equipment. Then, workers manually clear the blockage.

[0005] Meanwhile, the existing technology uses weight sensors for alarms, which trigger an alarm when the total weight of the device exceeds a set threshold. This is susceptible to external interference and may lead to false alarms. Utility Model Content

[0006] To address the shortcomings mentioned in the background art, the purpose of this utility model is to provide a twin-screw metering feeder.

[0007] The objective of this utility model can be achieved through the following technical solutions:

[0008] A protective device for a granulator includes a base plate, on which a first drive motor for controlling the operation of the granulator is mounted. A conveying pipe for conveying materials is provided at the top of the base plate. A storage hopper for storing materials is fixedly installed above the conveying pipe. An extrusion pipe is fixedly installed on the outside of the conveying pipe for conveying materials in the storage hopper to the extrusion pipe and extruding them through the extrusion pipe. A diversion and pressure relief pipe is connected in the middle of the conveying pipe, allowing materials blocked in the conveying pipe to enter the diversion and pressure relief pipe.

[0009] A control device for controlling the drive motor to rotate forward and backward is installed at the corresponding position of the diversion and pressure relief pipe on the base plate. The diversion and pressure relief pipe is equipped with a material blocking component. The material entering the diversion and pressure relief pipe can push the material blocking component to move closer to the control device in the diversion and pressure relief pipe, and trigger the control device to reverse the first drive motor.

[0010] Furthermore, a motor bracket is fixedly installed on the top of the base plate, and the first drive motor is fixedly installed inside the motor bracket. The control device includes a push-button switch for contacting the material blocking component, and the push-button switch is used to control the forward and reverse rotation of the first drive motor.

[0011] Furthermore, a transmission assembly for transmission is provided on the inner side of the conveying pipe, and a pressure relief port for diverting pressure is opened on the inner side of the conveying pipe at the position corresponding to the diversion and pressure relief pipe.

[0012] Furthermore, a sliding push plate is slidably provided on the inner side of the diversion and pressure relief pipe, and a push support rod is fixedly installed on the end of the sliding push plate away from the conveying pipe.

[0013] Furthermore, the material blocking component includes a movable pusher frame, and a switch control push plate is provided at the bottom of the movable pusher frame corresponding to the position of the button switch. After the movable pusher frame is driven, the switch control push plate will push the button switch to control the working state of the first drive motor. A guide groove is provided on the outer side of the movable pusher frame.

[0014] Furthermore, the material blocking component includes a fixed bracket, on which a pressure sensor is fixedly installed at a position corresponding to the movable pusher. A movable guide rail is fixedly connected to the outside of the fixed bracket at a position corresponding to the guide groove, for guiding the movement of the movable pusher in coordination with the guide groove. A spring is fixedly installed at the end of the pressure sensor facing the movable pusher. A signal processor is installed inside the fixed bracket, and an alarm player is fixedly installed on the outside of the fixed bracket. The signal processor is used to receive the signal transmitted by the pressure sensor when it reaches a preset critical value, and to issue an alarm to the outside through the alarm player.

[0015] Furthermore, a top cover is installed on the top of the storage tank, and a feeding hopper for feeding is provided on the top of the top cover. A second drive motor is fixedly installed on the top of the top cover, and a mixing shaft is fixedly installed through the top cover by the second drive motor for controlling the mixing shaft to rotate. A mixing side frame for preliminary mixing of materials is fixedly installed on the outside of the mixing shaft. A compression shaft is fixedly installed at the bottom of the mixing shaft, and a compression impeller is provided on the outside of the compression shaft for feeding materials into the conveying pipe at the bottom during rotation.

[0016] Furthermore, an extrusion shaft is provided inside the extrusion tube, and the extrusion shaft is connected to the first drive motor through a transmission assembly. An extrusion impeller is fixedly installed on the outside of the extrusion shaft to realize the extrusion of materials. An extrusion port for extruding materials is provided at the end of the extrusion tube away from the conveying tube.

[0017] The beneficial effects of this utility model are:

[0018] This invention utilizes the expansion of internal materials when blockage occurs. When materials accumulate and become blocked, they automatically push the sliding push plate inside the pressure relief pipe, causing the movable pusher to move outward. When the movable pusher moves outward, it pushes the button switch, which then controls the first drive motor to shut down or reverse, preventing further material processing from pressurizing the equipment and causing damage.

[0019] This invention also provides an alarm function. By utilizing the expansion of accumulated material, the pressure inside the pressure sensor increases immediately when the button switch is pushed, in conjunction with the spring. At this time, a signal is transmitted to the alarm device to alert the outside and remind the staff to handle the equipment abnormality. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings.

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the base plate structure of this utility model;

[0023] Figure 3 This is a cross-sectional view of the internal structure of this utility model;

[0024] Figure 4 This is a schematic diagram of the diversion and pressure relief pipe structure of this utility model;

[0025] Figure 5 This is a schematic diagram of the movable pusher structure of this utility model;

[0026] Figure 6 This is a schematic diagram of the fixed bracket structure of this utility model;

[0027] Figure 7 This is a cross-sectional view of the internal structure of the storage tank and extrusion tube of this utility model.

[0028] In the diagram: 1. Base plate; 11. Motor bracket; 12. First drive motor; 13. Control device; 14. Push button switch; 2. Conveying pipe; 21. Transmission assembly; 22. Pressure relief port; 3. Diversion and pressure relief pipe; 31. Sliding push plate; 32. Push rod; 4. Movable push frame; 41. Switch control push plate; 42. Guide groove; 5. Fixed bracket; 51. Pressure sensor; 52. Moving guide rail; 53. Spring; 54. Alarm player; 6. Storage tank; 61. Top cover; 62. Feed hopper; 63. Second drive motor; 64. Mixing and stirring shaft; 65. Stirring side frame; 66. Compression central shaft; 67. Compression impeller; 7. Extrusion pipe; 71. Extrusion chamber; 72. Extrusion central shaft; 73. Extrusion impeller; 74. Extrusion port. Detailed Implementation

[0029] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. Obviously, the described embodiments are only a part of the embodiments of the utility model, and not all of them. Unless otherwise specified, the embodiments and features described in this application can be combined with each other. All other embodiments obtained by those skilled in the art based on the embodiments of the utility model without creative effort are within the scope of protection of the utility model.

[0030] See Figures 1 to 7 .

[0031] A granulator protection device, such as Figure 1 and 2 As shown, the system includes a base plate 1, on which a first drive motor 12 for controlling the operation of the granulator is installed. A conveying pipe 2 for conveying materials is provided at the top of the base plate 1. A storage tank 6 for storing materials is fixedly installed above the conveying pipe 2. An extrusion pipe 7 is fixedly installed on the outside of the conveying pipe 2. The material in the storage tank 6 is conveyed to the extrusion pipe 7 and extruded through the extrusion pipe 7. A diversion and pressure relief pipe 3 is connected in the middle of the conveying pipe 2, so that the material blocked in the conveying pipe 2 can enter the diversion and pressure relief pipe 3.

[0032] A control device 13 for controlling the drive motor to rotate in both directions is installed at the corresponding position of the diversion and pressure relief pipe 3 on the base plate 1. The diversion and pressure relief pipe 3 is provided with a material blocking component. The material entering the diversion and pressure relief pipe 3 can push the material blocking component to move closer to the control device 13 in the diversion and pressure relief pipe 3, and trigger the control device 13 to reverse the first drive motor 12.

[0033] like Figure 2 As shown, a motor bracket 11 is fixedly installed on the top of the base plate 1, and the first drive motor 12 is fixedly installed inside the motor bracket 11. The control device 13 includes a push button switch 14 for contacting the material blocking component, and the push button switch 14 is used to control the forward and reverse rotation of the first drive motor 12.

[0034] The working state of the first drive motor 12 is controlled by the control device 13 inside the base plate 1. The working direction of the first drive motor 12 is controlled by turning the button switch 14 on the top of the control device 13 on and off, thereby realizing the movement direction of the internal material in the working state. The control device 13 can control the working state of the first drive motor 12 according to the settings, and turn it off or reverse it after turning it off.

[0035] like Figure 3As shown, a transmission assembly 21 for transmission is provided on the inner side of the conveying pipe 2, and a pressure relief port 22 for pressure diversion is opened on the inner side of the conveying pipe 2 at the position corresponding to the diversion and pressure relief pipe 3.

[0036] The material is guided into the conveying pipe 2. Under normal conditions, the material is introduced into the extrusion pipe 7. When the extrusion pipe 7 is blocked, the material is introduced into the diversion and pressure relief pipe 3 through the pressure relief port 22.

[0037] like Figure 4 As shown, a sliding push plate 31 is slidably arranged inside the diversion and pressure relief pipe 3, and a push support rod 32 is fixedly installed at the end of the sliding push plate 31 away from the conveying pipe 2.

[0038] The material that flows back into the extrusion tube 7 when it is silted up inside the diversion and pressure relief pipe 3 will push the sliding push plate 31 to move outward and push the push rod 32 at the same time, so that the push rod 32 can drive the movable push frame 4 to move.

[0039] like Figure 5 As shown, the material blocking component includes a movable pusher 4, which is located on the side of the push rod 32 away from the conveying pipe 2. It can move away from the conveying pipe 2 under the drive of the push rod 32. A switch control push plate 41 is provided at the bottom of the movable pusher 4 corresponding to the position of the button switch 14. After the movable pusher 4 is driven, the switch control push plate 41 will push the button switch 14 to control the working state of the first drive motor 12. A guide groove 42 is provided on the outer side of the movable pusher 4.

[0040] The push plate 41 at the bottom of the movable push frame 4 is controlled by a switch to move the push button switch 14, thereby enabling the control device 13 to control the working state of the first drive motor 12.

[0041] like Figure 6 As shown, the material blocking component includes a fixed bracket 5, which is located on the side of the movable pusher 4 away from the conveying pipe 2. A pressure sensor 51 is fixedly installed on the fixed bracket 5 at the position corresponding to the movable pusher 4. A movable guide rail 52 for guiding the movement of the movable pusher 4 is fixedly connected to the outside of the fixed bracket 5 at the position corresponding to the guide groove 42. The guide rail 52 is used to guide the movement direction of the movable pusher 4 in conjunction with the guide groove 42. A spring 53 is fixedly installed on the end of the pressure sensor 51 facing the movable pusher 4. A signal processor is installed inside the fixed bracket 5. An alarm player 54 is fixedly installed on the outside of the fixed bracket 5. The signal processor is used to receive the signal transmitted by the pressure sensor 51 when it reaches a preset critical value and to issue an alarm to the outside through the alarm player 54.

[0042] By pushing the support rod 32 to move the movable pusher 4, and when the switch control push plate 41 pushes the button switch 14 to switch the working state, a sudden and significant change in the pressure of the spring 53 occurs. This facilitates the pressure sensor 51's monitoring of the working state. At this time, the pressure sensor 51 sends a signal to the alarm player 54 at the bottom, causing the alarm player 54 to sound an alarm outward, reminding personnel to handle the situation promptly. It should be noted that when the alarm player 54 sounds an alarm outward, the spring still has a certain amount of compression. If the pressure in the delivery pipe 2 continues to increase, the movable pusher 4 can continue to move to alleviate the pressure increase inside the delivery pipe 2.

[0043] like Figure 7 As shown, a top cover 61 is installed on the top of the storage tank 6. A feeding hopper 62 for feeding is provided on the top of the top cover 61. A second drive motor 63 is fixedly installed on the top of the top cover 61. A mixing and stirring shaft 64 is fixedly installed through the top cover 61 and is used to control the mixing and stirring shaft 64 to rotate. A mixing side frame 65 for preliminary mixing of materials is fixedly installed on the outside of the mixing and stirring shaft 64. A compression shaft 66 is fixedly installed at the bottom of the mixing and stirring shaft 64. A compression impeller 67 is provided on the outside of the compression shaft 66 and is used to input materials into the conveying pipe 2 at the bottom during rotation.

[0044] An extrusion shaft 72 is provided inside the extrusion tube 7. The extrusion shaft 72 is connected to the first drive motor 12 through the transmission group 21. An extrusion impeller 73 is fixedly installed on the outside of the extrusion shaft 72 to realize the extrusion of materials. An extrusion port 74 for extruding materials is provided at the end of the extrusion tube 7 away from the conveying tube 2.

[0045] The material is introduced through the feed hopper 62 and enters the storage tank 6. The second drive motor 63 drives the mixing shaft 64 and the compression shaft 66 to rotate, so that the mixing shaft 64 and the compression shaft 66 press the material into the conveying pipe 2. The mixing side frame 65 is used to perform coarse processing of the material, and the compression impeller 67 is used to squeeze the raw material into the conveying pipe 2.

[0046] The first drive motor 12 drives the extrusion shaft 72 to rotate, so that the extrusion impeller 73 on the outside of the extrusion shaft 72 can extrude the material inside the extrusion tube 7 to the extrusion port 74.

[0047] In use, the material is fed into the storage tank 6 through the feed hopper 62. After initial mixing by the stirring frame 65 driven by the second drive motor 63 and extrusion by the compression impeller 67, the material enters the conveying pipe 2 and is then guided into the extrusion pipe 7. The material entering the extrusion pipe 7 is then extruded into the extrusion port 74 by the extrusion impeller 73, and finally extruded.

[0048] When internal material blockage occurs, the extrusion port 74 will become clogged first, leading to increased pressure inside the extrusion tube 7. Simultaneously, under the continued operation of the second drive motor 63, the material will be introduced into the diversion and pressure relief pipe 3 through the pressure relief port 22. The material introduced into the diversion and pressure relief pipe 3 will push the sliding push plate 31 to move. When this movement causes the movable pusher 4 to move, the movable pusher 4 will push the button switch 14 through the guide groove 42 at its bottom, ultimately pushing the button switch 14 to shut down or reverse the first drive motor 12. At this time, the pressure sensor 51 will sense the significant pressure change generated when the button switch 14 is pushed and transmit a signal to the alarm player 54, causing the alarm player 54 to issue an alarm to the outside, alerting personnel to handle the situation.

[0049] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

[0050] It should be noted that if the utility model embodiment involves directional indicators (such as up and down), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0051] Furthermore, the meaning of "and / or" throughout the text includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution that simultaneously satisfies A and B. Additionally, if the utility model embodiments involve descriptions of "first," "second," etc., these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" or "second" can explicitly or implicitly include at least one of those features. Furthermore, "multiple" refers to two or more. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by the utility model.

Claims

1. A protective device for a granulator, comprising a base plate (1), characterized in that, The base plate (1) is equipped with a first drive motor (12) for controlling the operation of the granulator. The top of the base plate (1) is provided with a conveying pipe (2) for conveying materials. A storage tank (6) for storing materials is fixedly installed above the conveying pipe (2). An extrusion pipe (7) is fixedly installed on the outside of the conveying pipe (2). The material in the storage tank (6) is conveyed to the extrusion pipe (7) and extruded through the extrusion pipe (7). The middle part of the conveying pipe (2) is connected to a diversion and pressure relief pipe (3). The material blocked in the conveying pipe (2) can enter the diversion and pressure relief pipe (3). The base plate (1) is equipped with a control device (13) for controlling the drive motor to rotate in both directions at the corresponding position of the diversion and pressure relief pipe (3). The diversion and pressure relief pipe (3) is provided with a baffle component. The material entering the diversion and pressure relief pipe (3) can push the baffle component to move closer to the control device (13) in the diversion and pressure relief pipe (3) and trigger the control device (13) to reverse the first drive motor (12).

2. The granulator protection device according to claim 1, characterized in that, A motor bracket (11) is fixedly installed on the top of the base plate (1), and the first drive motor (12) is fixedly installed inside the motor bracket (11). The control device (13) includes a button switch (14) for contacting the material blocking component. The button switch (14) is used to contact the material blocking component and control the first drive motor (12) to rotate forward and backward.

3. The granulator protection device according to claim 1, characterized in that, The inner side of the conveying pipe (2) is provided with a transmission assembly (21) for transmission, and the inner side of the conveying pipe (2) is provided with a pressure relief port (22) for pressure relief corresponding to the position of the diversion and pressure relief pipe (3).

4. A granulator protection device according to claim 2, characterized in that, A sliding push plate (31) is slidably provided on the inner side of the diversion and pressure relief pipe (3), and a push rod (32) is fixedly installed on the end of the sliding push plate (31) away from the conveying pipe (2).

5. A granulator protection device according to claim 4, characterized in that, The material blocking component includes a movable pusher (4), which is located on the side of the push rod (32) away from the conveying pipe (2). It can move away from the conveying pipe (2) under the drive of the push rod (32). A switch control push plate (41) is provided at the bottom of the movable pusher (4) corresponding to the position of the button switch (14). After the movable pusher (4) is driven, the switch control push plate (41) pushes the button switch (14) to control the working state of the first drive motor (12).

6. A granulator protection device according to claim 5, characterized in that, The material blocking component includes a fixed bracket (5), which is located on the side of the movable pusher (4) away from the conveying pipe (2). A pressure sensor (51) is fixedly installed on the fixed bracket (5) at the position corresponding to the movable pusher (4). A guide groove (42) is provided on the outer side of the movable pusher (4). A movable guide rail (52) is fixedly connected on the outer side of the fixed bracket (5) at the position corresponding to the guide groove (42) to guide the movement of the movable pusher (4). A spring (53) is installed on the end of the pressure sensor (51) facing the movable pusher (4). A signal processor is installed inside the fixed bracket (5). An alarm player (54) is fixedly installed on the outer side of the fixed bracket (5). The signal processor is used to receive the signal transmitted by the pressure sensor (51) when it reaches a preset critical value and to send an alarm to the outside through the alarm player (54).

7. A granulator protection device according to claim 1, characterized in that, The storage tank (6) is equipped with a top cover (61) at the top. The top cover (61) is provided with a feeding hopper (62) for feeding. The top cover (61) is fixedly installed with a second drive motor (63). The second drive motor (63) passes through the top cover (61) and is fixedly installed with a mixing shaft (64) for controlling the mixing shaft (64) to rotate. The mixing shaft (64) is fixedly installed with a mixing side frame (65) for preliminary mixing of materials on the outside. The mixing shaft (64) is fixedly installed with a compression shaft (66) at the bottom. The compression shaft (66) is provided with a compression impeller (67) on the outside for feeding materials into the conveying pipe (2) at the bottom during rotation.

8. A granulator protection device according to claim 1, characterized in that, The extrusion tube (7) is provided with an extrusion shaft (72) inside. The extrusion shaft (72) is connected to the first drive motor (12) through the transmission group (21). An extrusion impeller (73) is fixedly installed on the outside of the extrusion shaft (72) to realize the extrusion of the material. An extrusion port (74) for extruding the material is provided at the end of the extrusion tube (7) away from the conveying tube (2).

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