Anti-blocking structure of screw conveying device of press bar machine

Abstract

The utility model discloses a kind of anti-blocking structure of bar-pressing machine spiral conveying device, including spiral conveying device (1) and bar-pressing machine storage bin (2), the spiral conveying device (1) includes conveying pipe (3), the bottom of conveying pipe (3) is connected with discharge pipe (4), the lower end of discharge pipe (4) is equipped with baffle (5), the baffle (5) is connected with baffle drive arrangement, high-level material level detection photoelectric switch (6) is provided in the bar-pressing machine storage bin (2), the baffle drive arrangement and the high-level material level detection photoelectric switch (6) are electrically connected with PLC programmable controller (18).The utility model can effectively prevent the problem of blockage and equipment damage caused by too much tobacco soil.

Description

Technical Field

[0001] This utility model relates to an anti-clogging structure, and more particularly to an anti-clogging structure for a screw conveyor device of a bar press. Background Technology

[0002] The TG80 fully automatic hydraulic briquetting machine is a type of tobacco briquetting equipment. The tobacco collected by the process dust removal system is conveyed into the storage hopper of the TG80 fully automatic hydraulic briquetting machine via a screw conveyor. The tobacco level in the storage hopper is detected by tobacco level sensors installed on the side of the TG80 fully automatic hydraulic briquetting machine. These sensors, from top to bottom, detect the high, middle, and low levels of the storage hopper. When the corresponding tobacco level sensor in the storage hopper is triggered, the TG80 fully automatic hydraulic briquetting machine enters automatic operation mode. The tobacco in the storage hopper is then compressed into short tobacco bars of suitable length and hardness by the TG80 fully automatic hydraulic briquetting machine, which are then processed by relevant departments.

[0003] In existing technology, the high-level material level detection in the storage silo only monitors the extreme level of tobacco stored in the silo. When the detection is blocked, it sends an alarm signal to remind the operator of the high-level alarm in the storage silo, but does not control the operation of the screw conveyor. During the operation of the TG80 fully automatic hydraulic briquetting machine, if the high-level material level detection in the storage silo is blocked for a certain period of time, the screw conveyor should stop conveying tobacco to the TG80 fully automatic hydraulic briquetting machine. Otherwise, excessive tobacco in the horizontal screw conveyor will cause it to break open the protective cover of the horizontal conveyor, and the inclined screw conveyor will trip due to motor overload. At this time, the TG80 fully automatic hydraulic briquetting machine will stop working. The screw conveyor is 2 meters or more above the ground, posing a significant safety hazard for maintenance workers climbing to perform maintenance. Utility Model Content

[0004] The purpose of this invention is to provide an anti-clogging structure for the screw conveyor of a press bar machine, so as to solve the technical problems in the prior art. It can effectively prevent clogging and equipment damage caused by excessive smoke and dust.

[0005] This utility model provides an anti-clogging structure for a screw conveyor device of a briquetting machine, including a screw conveyor device and a briquetting machine storage bin. The screw conveyor device includes a conveying pipe, and a discharge pipe is connected to the bottom of the conveying pipe. A baffle is provided at the lower end of the discharge pipe, and the baffle is connected to a baffle driving device. A high-level material level detection photoelectric switch is provided in the briquetting machine storage bin. Both the baffle driving device and the high-level material level detection photoelectric switch are electrically connected to a PLC programmable controller.

[0006] In the aforementioned anti-clogging structure of the screw conveyor of the briquetting machine, preferably, the feed end of the conveying pipe is connected to the tobacco storage bin, the discharge end of the conveying pipe is connected to the storage bin of the briquetting machine, the conveying pipe is inclined, and the end of the conveying pipe connected to the tobacco storage bin is lower than the other end.

[0007] In the aforementioned anti-clogging structure of the screw conveyor of the press machine, preferably, the discharge pipe is arranged vertically, the upper end of the discharge pipe is connected to the end of the conveying pipe near the tobacco storage bin, and a receiving cylinder is provided below the discharge pipe.

[0008] In the aforementioned anti-blocking structure of the screw conveyor of the press bar machine, preferably, the baffle driving device includes a cylinder support column, a cylinder fixing frame, and a cylinder. The cylinder support column is arranged vertically, the cylinder fixing frame is fixed to the top of the cylinder support column, the cylinder is arranged horizontally, the cylinder is fixed on the cylinder fixing frame, and the cylinder rod on the cylinder is fixedly connected to the baffle.

[0009] In the aforementioned anti-blocking structure of the screw conveyor of the press bar machine, preferably, the cylinder is connected to a two-position five-way solenoid valve through an air pipe, the two-position five-way solenoid valve is connected to an air source through an air pipe, and the two-position five-way solenoid valve is also electrically connected to the PLC programmable controller.

[0010] In the aforementioned anti-clogging structure of the screw conveyor of the press bar machine, preferably, the cylinder is provided with a first magnetic switch and a second magnetic switch, both of which are electrically connected to the PLC programmable controller.

[0011] In the aforementioned anti-clogging structure of the screw conveyor of the press bar machine, preferably, the cylinder fixing frame has two mounting holes, the two mounting holes are located on both sides of the cylinder, and guide rods are respectively inserted into and slidably connected in the two mounting holes. Guide blocks are slidably installed on both sides of the cylinder. One end of the guide rod is fixedly connected to the guide block, and the other end of the guide rod is fixedly connected to the baffle.

[0012] Compared with existing technologies, this utility model includes a screw conveyor and a briquette press storage bin. The screw conveyor includes a conveying pipe, the bottom of which is connected to a discharge pipe. A baffle is provided at the lower end of the discharge pipe, and the baffle is connected to a baffle drive device. A high-level material level detection photoelectric switch is installed inside the briquette press storage bin. Both the baffle drive device and the high-level material level detection photoelectric switch are electrically connected to a PLC programmable controller. Through the setting of the high-level material level detection photoelectric switch, when the tobacco in the briquette press storage bin blocks the high-level material level detection photoelectric switch for a preset time, the PLC programmable controller automatically controls the baffle drive device to move the baffle, causing the lower end of the discharge pipe to open. The tobacco in the conveying pipe is discharged through the discharge pipe and will not continue to enter the briquette press storage bin, effectively preventing excessive tobacco from causing blockage and equipment damage. Attached Figure Description

[0013] Fig. 1 This is a simplified structural diagram of the present invention;

[0014] Fig. 2 This is a partial structural schematic diagram of the present invention;

[0015] Fig. 3 This is the electrical schematic diagram of this utility model.

[0016] Explanation of reference numerals in the attached drawings: 1. Screw conveyor; 2. Press bar machine storage bin; 3. Conveying pipe; 4. Discharge pipe; 5. Baffle; 6. High-level material level detection photoelectric switch; 7. Tobacco storage bin; 8. Cylinder support column; 9. Cylinder fixing frame; 10. Cylinder; 11. Two-position five-way solenoid valve; 12. Air source; 13. First magnetic switch; 14. Second magnetic switch; 15. Guide rod; 16. Guide block; 17. Cylinder rod; 18. PLC programmable controller; 19. Audible and visual alarm. Detailed Implementation

[0017] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0018] Embodiments of this utility model: such as Figs. 1-3As shown, an anti-clogging structure for a screw conveyor of a briquetting machine includes a screw conveyor 1, a briquetting machine storage bin 2, and a tobacco storage bin 7. The screw conveyor 1 includes a conveying pipe 3, the inlet end of which is connected to the tobacco storage bin 7, and the outlet end of which is connected to the briquetting machine storage bin 2. The conveying pipe 3 is inclined, with one end of the conveying pipe 3 connected to the tobacco storage bin 7 being lower than the other end. A discharge pipe 4 is connected to the bottom of the conveying pipe 3, and a baffle 5 is provided at the lower end of the discharge pipe 4. The baffle 5 is connected to a baffle driving device. A high-level material level detection photoelectric switch 6 is provided in the briquetting machine storage bin 2. Both the baffle driving device and the high-level material level detection photoelectric switch 6 are electrically connected to a PLC programmable controller 18.

[0019] The screw conveyor 1 is a commercially available product that can be purchased directly. The screw conveyor 1 also includes a screw conveyor shaft and a drive motor. The screw conveyor shaft is located inside the conveying pipe 3, and the drive motor drives the screw conveyor shaft to rotate. When the screw conveyor shaft rotates, it can lift and convey the tobacco to the briquetting machine's storage hopper 2. The screw conveyor shaft and drive motor are not shown in the figure.

[0020] When the equipment is working, when the tobacco in the briquetting machine's storage bin 2 reaches the high level, it will block the high-level material level detection photoelectric switch 6. The high-level material level detection photoelectric switch 6 sends a signal to the PLC programmable controller 18. After the PLC programmable controller 18 detects that the high-level material level detection photoelectric switch 6 has been blocked for more than a preset time, it controls the baffle drive device to work, causing the baffle 5 to move horizontally and opening the lower end of the discharge pipe 4. At this time, when the tobacco in the conveying pipe 3 reaches the position of the discharge pipe 4, it will fall down along the discharge pipe 4 and fall into the receiving cylinder set below the discharge pipe 4. In this way, the tobacco in the briquetting machine's storage bin 2 will not increase further, thus solving the problem of excessive tobacco squeezing out the protective cover in the horizontal screw conveyor due to tobacco blockage, as well as the problem of the screw conveyor tripping due to motor overload.

[0021] The PLC programmable controller 18 is a commercially available product and can be purchased. In this embodiment, the preferred model of the PLC programmable controller 18 is Siemens S7-300.

[0022] Specifically, in this embodiment, the discharge pipe 4 is arranged vertically, the upper end of the discharge pipe 4 is connected to the end of the conveying pipe 3 near the tobacco storage bin 7, and a receiving cylinder is provided below the discharge pipe 4.

[0023] Since the volume of the receiving hopper is fixed, when the flue reaches a high level, it is still necessary for staff to handle it as soon as possible. Therefore, an audible and visual alarm 19 can be set up. The audible and visual alarm 19 is electrically connected to the PLC programmable controller 18. When the flue reaches a high level, the PLC programmable controller 18 controls the audible and visual alarm 19 to emit sound and light to remind staff to handle it as soon as possible.

[0024] Furthermore, the baffle driving device includes a cylinder support column 8, a cylinder fixing frame 9, and a cylinder 10. The cylinder support column 8 is arranged vertically, the cylinder fixing frame 9 is fixed on the top of the cylinder support column 8, the cylinder 10 is arranged horizontally, the cylinder 10 is fixed on the cylinder fixing frame 9, and the cylinder rod 17 on the cylinder 10 is fixedly connected to the baffle 5.

[0025] The lower end of the cylinder support column 8 is fixed to the ground, and the cylinder mounting bracket 9 is welded and fixed to the top end of the cylinder support column 8, or bolts can be used for fixing. The cylinder mounting bracket 9 is used to fix the cylinder 10, keeping the cylinder 10 in a horizontal position.

[0026] The cylinder 10 is connected to the two-position five-way solenoid valve 11 via an air pipe. The two-position five-way solenoid valve 11 is connected to the air source 12 via an air pipe. The two-position five-way solenoid valve 11 is also electrically connected to the PLC programmable controller 18.

[0027] The two-position five-way solenoid valve 11 is a commercially available product and is an actuator. The PLC programmable controller 18 can control the extension or retraction of the cylinder rod 17 on the cylinder 10 by controlling the working state of the two-position five-way solenoid valve 11.

[0028] In order to improve control accuracy and ensure that the baffle 5 can move into place, it is preferable to set a first magnetic switch 13 and a second magnetic switch 14 on the cylinder 10. Both the first magnetic switch 13 and the second magnetic switch 14 are electrically connected to the PLC programmable controller 18.

[0029] The first magnetic switch 13 is used to detect whether the cylinder rod 17 has moved into position when it extends. When the first magnetic switch 13 detects that the cylinder rod 17 has moved into position, it means that the baffle 5 has moved to the bottom of the discharge pipe 4, and at this time the bottom of the discharge pipe 4 is blocked. The second magnetic switch 14 is used to detect whether the cylinder rod 17 has moved into position when it retracts. When the second magnetic switch 14 detects that the cylinder rod 17 has moved into position, it means that the baffle 5 has left the bottom of the discharge pipe 4, and at this time the bottom of the discharge pipe 4 is in an open state.

[0030] The cylinder mounting bracket 9 has two mounting holes on both sides of the cylinder 10. Guide rods 15 are inserted into and slidably connected in the two mounting holes. Guide rails are provided on both sides of the cylinder 10. Guide blocks 16 are slidably installed on the guide rails. One end of the guide rod 15 is fixedly connected to the guide block 16, and the other end of the guide rod 15 is fixedly connected to the baffle 5.

[0031] The guide rod 15 ensures that the baffle 5 remains horizontal at all times, preventing it from tipping over.

[0032] The working principle of this utility model is as follows: When the TG80 automatic hydraulic briquetting machine is running normally, the screw conveyor 1 lifts the tobacco in the tobacco storage bin 7 and transports it to the briquetting machine storage bin 2.

[0033] When the screw conveyor 1 supplies too much soot to the briquetting machine storage bin 2 for some reason, the soot in the briquetting machine storage bin 2 will block the high-level material level detection photoelectric switch 6. After the PLC programmable controller 18 detects that the high-level material level detection photoelectric switch 6 is blocked, the PLC programmable controller 18 controls the audible and visual alarm 19 to send an audible and visual alarm, reminding the briquetting machine operator to perform relevant operations to eliminate the alarm.

[0034] If the high-level material level detection photoelectric switch 6 is blocked and triggered for more than a preset time, for example, a preset time of 3 minutes, the PLC programmable controller 18 controls the two-position five-way solenoid valve 11 to actuate, causing the cylinder rod 17 on the cylinder 10 to retract. When the second magnetic switch 14 detects that the cylinder rod 17 has moved into position, the second magnetic switch 14 sends a signal to the PLC programmable controller 18, which then controls the two-position five-way solenoid valve 11 to actuate, stopping the cylinder rod 17 from moving. At this time, the lower end of the discharge pipe 4 is open. When the tobacco is lifted, it will fall down along the discharge pipe 4 and enter the receiving hopper. No new tobacco will enter the briquetting machine storage bin 2.

[0035] When the PLC programmable controller 18 detects that the high-level material level detection photoelectric switch 6 has not been blocked for a preset time, for example, one minute, the PLC programmable controller 18 controls the two-position five-way solenoid valve 11 to actuate, causing the cylinder rod 17 on the cylinder 10 to extend. When the first magnetic switch 13 detects that the cylinder rod 17 has moved into position, the first magnetic switch 13 sends a signal to the PLC programmable controller 18, and the PLC programmable controller 18 controls the two-position five-way solenoid valve 11 to actuate, causing the cylinder rod 17 to stop moving. At this time, the baffle 5 moves to the bottom of the discharge pipe 4, the lower end of the discharge pipe 4 is blocked, and the tobacco continues to be lifted and sent into the briquetting machine storage bin 2.

[0036] The above description, based on the embodiments shown in the drawings, details the structure, features, and effects of this utility model. The above description is only a preferred embodiment of this utility model, but the scope of implementation of this utility model is not limited to what is shown in the drawings. Any changes made in accordance with the concept of this utility model, or modifications to equivalent embodiments, that do not exceed the spirit covered by the specification and drawings, shall be within the protection scope of this utility model.

Claims

1. A blockage prevention structure for a screw conveyor of a briquetting machine, comprising a screw conveyor (1) and a briquetting machine storage bin (2), characterized in that: The screw conveyor (1) includes a conveying pipe (3), the bottom of which is connected to a discharge pipe (4), and the lower end of the discharge pipe (4) is provided with a baffle (5). The baffle (5) is connected to a baffle driving device. The storage bin (2) of the press machine is provided with a high-level material level detection photoelectric switch (6). The baffle driving device and the high-level material level detection photoelectric switch (6) are both electrically connected to a PLC programmable controller (18).

2. The anti-clogging structure of the screw conveyor of the bar press according to claim 1, characterized in that: The feed end of the conveying pipe (3) is connected to the tobacco storage bin (7), and the discharge end of the conveying pipe (3) is connected to the press machine storage bin (2). The conveying pipe (3) is inclined, and the end of the conveying pipe (3) connected to the tobacco storage bin (7) is lower than the other end.

3. The anti-clogging structure of the screw conveyor of the bar press according to claim 2, characterized in that: The discharge pipe (4) is arranged vertically, and the upper end of the discharge pipe (4) is connected to the end of the conveying pipe (3) near the tobacco storage bin (7). A receiving cylinder is provided below the discharge pipe (4).

4. The anti-clogging structure of the screw conveyor of the bar press according to claim 1, characterized in that: The baffle driving device includes a cylinder support column (8), a cylinder fixing frame (9) and a cylinder (10). The cylinder support column (8) is arranged vertically, the cylinder fixing frame (9) is fixed to the top of the cylinder support column (8), the cylinder (10) is arranged horizontally, the cylinder (10) is fixed on the cylinder fixing frame (9), and the cylinder rod (17) on the cylinder (10) is fixedly connected to the baffle (5).

5. The anti-clogging structure of the screw conveyor of the bar press according to claim 4, characterized in that: The cylinder (10) is connected to a two-position five-way solenoid valve (11) via an air pipe. The two-position five-way solenoid valve (11) is connected to an air source (12) via an air pipe. The two-position five-way solenoid valve (11) is also electrically connected to the PLC programmable controller (18).

6. The anti-clogging structure of the screw conveyor of the bar press according to claim 5, characterized in that: The cylinder (10) is provided with a first magnetic switch (13) and a second magnetic switch (14), both of which are electrically connected to the PLC programmable controller (18).

7. The anti-clogging structure of the screw conveyor of the bar press according to claim 5, characterized in that: The cylinder mounting bracket (9) has two mounting holes located on both sides of the cylinder (10). Guide rods (15) are inserted into and slidably connected in the two mounting holes. Guide blocks (16) are slidably installed on both sides of the cylinder (10). One end of the guide rod (15) is fixedly connected to the guide block (16), and the other end of the guide rod (15) is fixedly connected to the baffle (5).

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