Anti-blocking disc feeding system

Abstract

According to the anti-blocking type disc feeding system, a self-induction starting mechanism is arranged on a scraping plate of a disc feeder, and the self-induction starting mechanism is used for starting a vibration motor to clear blockage after a stock bin is blocked; the self-induction starting mechanism comprises induction rods and a travel switch, the induction rods are distributed in the vertical direction, the induction rods are rotationally connected with a fixing shaft fixed to the scraper in the horizontal direction, and the lower ends of the induction rods can be pushed by the material layer on the disc to drive the induction rods to swing along the fixing shaft; a contact of the travel switch is located on the back-swing stroke of the induction rod, so that the induction rod touches the contact of the travel switch after the induction rod swings back due to the fact that the thickness of a material layer on the material receiving disc is not enough to support the induction rod due to blockage of the stock bin, and the travel switch is communicated with a power supply of the vibration motor to start blockage clearing. The vibration motor can be automatically started for unblocking after the stock bin is blocked or materials are suspended, continuous attention of personnel is not needed, and energy conservation and noise reduction are achieved.

Description

Technical Field

[0001] This utility model relates to the field of feeding systems for powder or granular materials, specifically an anti-clogging disc feeding system. Background Technology

[0002] Disc feeding systems are widely used in mining feeding equipment, especially suitable for feeding powders or granular materials with poor flowability. They typically consist of a hopper and a disc feeder located at the discharge port at the bottom of the hopper. A cover is fixed at the bottom of the hopper to house the receiving disc of the disc feeder, and scrapers and a discharge port are installed on the cover. Material in the hopper falls through the discharge port onto the receiving disc, which is then driven to rotate continuously. The material on the receiving disc is blocked by the scraper after rotating to the discharge port.

[0003] Due to the flowability deviation of the materials conveyed by the aforementioned disc feeding system, materials are prone to clogging or hanging in the hopper, further causing uneven feeding and affecting normal material supply. Although a vibrating motor can be installed on the hopper to clear blockages, in practice, blockages and hanging materials are often intermittent and random, requiring continuous monitoring of the hopper's discharge, wasting unnecessary manpower. Alternatively, keeping the vibrating motor constantly running further wastes energy and generates unpleasant noise. Utility Model Content

[0004] The present invention aims to provide an anti-clogging disc feeding system that can automatically start a vibrating motor to clear blockages after the hopper is blocked or the material is suspended.

[0005] To solve the above technical problems, the specific solution adopted by this utility model is as follows: an anti-clogging disc feeding system, including a hopper and a disc feeder set at the bottom of the hopper. A vibrating motor is installed on the hopper wall, and a cover is installed at the bottom of the hopper covering the receiving disc of the disc feeder. The cover has a discharge port and a scraper at the discharge port for scraping the material on the receiving disc out of the discharge port. The scraper has a self-sensing starting mechanism, which is used to start the vibrating motor to clear the blockage after the hopper is blocked. The self-sensing starting mechanism includes a sensing rod and a limit switch. The sensing rod is distributed vertically and is rotatably connected to a fixed shaft fixed horizontally on the scraper. The lower end of the sensing rod can be pushed by the material layer on the disc to drive the sensing rod to swing along the fixed shaft. The contact of the limit switch is located at the swing stroke of the sensing rod. So when the sensing rod swings back due to the blockage of the hopper, and the thickness of the material layer on the receiving disc is insufficient to support the sensing rod, it touches the contact of the limit switch, and the limit switch connects the power supply of the vibrating motor to start clearing the blockage.

[0006] Preferably, the sensing rod is telescopic and includes a cylinder and a rod inserted into the cylinder. The cylinder is rotatably coupled with a fixed shaft. A through threaded hole is provided on the cylinder, and a tightening bolt for pressing the rod is installed in the threaded hole.

[0007] Preferably, the lower end of the rod is provided with horizontally distributed extension plates.

[0008] Preferably, the limit switch is located below the fixed position.

[0009] Preferably, a main switch is also connected in series on the power supply circuit of the vibration motor.

[0010] Preferably, anti-detachment bosses are fixedly provided on both sides of the sensing rod on the fixed shaft.

[0011] Preferably, a torsion spring is sleeved on the fixed shaft, with both ends of the torsion spring connected to the fixed shaft and the sensing rod respectively. The torsion spring is used to maintain the vertical distribution of the sensing rod.

[0012] Preferably, both the sensing rod and the limit switch are positioned near the discharge port of the scraper.

[0013] This invention features a self-induction starting mechanism. The lower end of the sensing rod in this mechanism is pushed by the material layer on the receiving disc to swing the rod. The contact of the limit switch in the mechanism is located at the return stroke of the sensing rod. This causes blockage or material suspension in the hopper, resulting in a significant reduction in the thickness of the material layer on the receiving disc, which is insufficient to support the lower end of the sensing rod. After the sensing rod swings back, it touches the contact of the limit switch, which then connects the power supply circuit of the vibrating motor, starting the motor to clear the blockage. Therefore, the disc feeding system of this invention can start automatically without continuous human supervision, saving manpower and avoiding energy waste and noise pollution caused by the vibrating motor being constantly running. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of an anti-clogging disc feeding system according to the present invention;

[0015] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure along the middle AA direction;

[0016] Figure 3 for Figure 2 A schematic diagram of the left-side structure of the self-sensing start mechanism in the image;

[0017] Figure 4 This is a schematic diagram showing the state of the sensor rod after the material on the receiving disc pushes the lower end of the sensor rod and causes the sensor rod to swing during the feeding process of the disc feeder.

[0018] Figure 5 for Figure 3 A schematic diagram of the left-side view structure;

[0019] Figure 6 This is a schematic diagram of the power supply circuit structure of the vibration motor of this utility model;

[0020] The markings in the diagram are: 1. Hopper, 2. Vibrating motor, 3. Feeder, 4. Receiving disc, 5. Cover, 6. Discharge port, 7. Scraper, 8. Self-induction starting mechanism, 9. Fixed shaft, 10. Limit switch, 11. Contact, 12. Sensing rod, 1201. Cylinder, 1202. Tightening bolt, 1203. Rod, 1204. Expansion plate, 13. Material layer, 14. Anti-detachment boss, 15. Torsion spring, 16. Main switch. Detailed Implementation

[0021] like Figure 1 As shown, the anti-clogging disc feeding system of this utility model is similar to the prior art in that it includes a hopper 1 and a disc feeder installed at the bottom of the hopper 1. The bottom of the hopper 1 is suspended and equipped with a feeder 3, which is used to continuously feed the material in the hopper 1 into the disc feeder below. A vibrating motor 2 for clearing blockages is also provided on the side wall of the hopper 1. After the vibrating motor 2 is started, it can vibrate the hopper wall of the hopper 1 to loosen the blocked or suspended material. The disc feeder includes a receiving disc 4 located below the feeder 3 and a drive component (not shown in the figure) that drives the receiving disc 4 to rotate. A cover cylinder 5 is also provided above the receiving disc 4. The cover cylinder 5 is fixed to the hopper 1 by a connecting rod (not shown in the figure), and a discharge port 6 and a scraper 7 are provided on the cover cylinder 5. Figure 2 As shown, when the material falls from the material receiving disc 4, it rotates counterclockwise along with the material receiving disc. The positions of the cover 5, scraper 7, and discharge port 6 do not change. The material is blocked by the scraper 7 after rotating to the scraper 7 and guided towards the discharge port 6, and finally discharged from the discharge port 6 to complete the feeding.

[0022] Unlike conventional disc feeding systems, this invention features a self-sensing start mechanism 8 on the scraper 7 near the discharge port 6. This mechanism automatically activates the vibration motor 2 to clear blockages when the hopper 1 becomes clogged. The self-sensing start mechanism 8 mainly includes a sensing rod 12 and a limit switch 10. Specifically:

[0023] like Figure 3 and Figure 5As shown, during non-feeding processes, the sensing rod 12 is vertically distributed, with a shaft hole at its top. This shaft hole rotatably engages with a fixed shaft 9 vertically fixed to the scraper 7, allowing the sensing rod 12 to swing around the fixed shaft 9 under external force. At the bottom of the sensing rod 12, there is a horizontally distributed expansion plate 1204 to increase the contact area between the lower end of the sensing rod 12 and the material layer 13. There is a gap between the lower edge of the expansion plate 1204 and the upper edge of the receiving disc 4, which is smaller than the normal thickness of the material layer 13 on the receiving disc 4 during normal feeding. Therefore, when the hopper 1 is not blocked, the material layer 13 on the receiving disc 4 exerts a pushing force on the expansion plate at the lower end of the sensing rod 12, causing the sensing rod 12 to swing. Figure 4 The state shown.

[0024] The housing of the limit switch 10 is fixed to the scraper 7 by a bracket (not shown) and located below the rotating shaft. The resilient contact 11 of the limit switch 10 is located in... Figure 3 In the indicated state, the sensing rod 12 is activated, causing the limit switch 10 to be in the open state. Figure 4 After the sensing rod 12 swings, the contact 11 resets due to the disengagement of the sensing rod 12, thus putting the limit switch 10 in an open-circuit state. The power supply circuit of the vibration motor 2 of this invention is as follows: Figure 6 As shown, a main switch 16 and the aforementioned limit switch 10 are connected in series between the power supply and the vibration motor 2, making the specific implementation of this utility model as follows:

[0025] In non-feeding operation mode, disconnect the main switch 16 and keep the vibrating motor 2 stationary.

[0026] During the feeding operation, the drive mechanisms of feeder 3 and receiving disc 4 are activated for normal feeding. Figure 4 The material layer 13 on the receiving disc 4 pushes the sensing rod 12 to swing, activating the main switch 16. When the hopper 1 becomes clogged, the reduced thickness of the material layer 13 causes the sensing rod 12 to swing back, triggering the limit switch 10. This connects the power supply circuit to the vibration motor 2, starting the motor to clear the blockage. After clearing the blockage, the material layer 13 thickness returns to normal, and the sensing rod should then swing further. Figure 4 The state causes the limit switch 10 to open, thereby shutting down the vibration motor 2.

[0027] In addition, anti-detachment bosses 14 are provided on both sides of the sensing rod 12 on the fixed shaft 9 to prevent the sensing rod 12 from sliding out along the circumference of the fixed shaft 9, or from causing the expansion plate at the bottom of the sensing rod 12 to come into contact with the scraper 7 and get stuck. A torsion spring 15 is also sleeved on the fixed rod, with both ends of the torsion spring 15 fixed to the sensing rod 12 and the fixed shaft 9, respectively, so as to maintain the sensing rod 12 in a vertical state when not feeding, and to ensure that the sensing rod 12 can swing back under the torsion of the torsion spring 15 to touch the contact 11 after the blockage of the hopper 1 occurs.

[0028] To meet the needs of different feeding amounts, the sensing rod 12 of this utility model is telescopic, including a cylinder 1201 located at the top and a rod 1203 slidably inserted into the lower end of the cylinder 1201. A threaded hole is provided on the cylinder 1201, and a tightening bolt 1202 for tightening the rod 1203 is installed in the threaded hole. Therefore, when the feeding amount is large and the material layer 13 on the receiving disc 4 is thick, the upper end of the rod 1203 can be further inserted into the cylinder 1201 and then positioned by the tightening bolt 1202 to prevent the extension plate 1204 from being inserted too deeply into the material layer 13, thus significantly reducing the passage gap of the material layer 13 and preventing material blockage. When the feeding amount is small and the material layer 13 on the receiving disc 4 is thin, the rod 1203 can be partially pulled out and then positioned by the tightening bolt 1202 to ensure that the lower edge of the extension plate 1204 can be pushed by the material layer 13.

Claims

1. A clog-resistant disc feeding system, comprising a hopper (1) and a disc feeder disposed at the bottom of the hopper (1), wherein a vibrating motor (2) is provided on the hopper wall, and a cover (5) is provided at the bottom of the hopper (1) covering the receiving disc (4) of the disc feeder, wherein a discharge port (6) is provided on the cover (5) and a scraper (7) is provided at the discharge port (6) for scraping the material on the receiving disc (4) out of the discharge port (6), characterized in that: The scraper (7) is equipped with a self-sensing start mechanism (8), which is used to start the vibrating motor (2) to clear the blockage after the hopper (1) is blocked. The self-sensing start mechanism (8) includes a sensing rod (12) and a limit switch (10). The sensing rod (12) is distributed vertically and is rotatably connected to a fixed shaft (9) fixed horizontally on the scraper (7). The lower end of the sensing rod (12) can be pushed by the material layer (13) on the disc. The movement causes the sensing rod (12) to swing along the fixed shaft (9); the contact (11) of the limit switch (10) is located on the swing stroke of the sensing rod (12), so that when the material layer (13) on the receiving disc (4) is not thick enough to support the sensing rod (12) due to the blockage of the hopper (1) and swings back, it touches the contact (11) of the limit switch (10), and the limit switch (10) connects the power supply of the vibration motor (2) to start clearing the blockage.

2. The anti-clogging disc feeding system as described in claim 1, characterized in that: The sensing rod (12) is telescopic and includes a cylinder (1201) and a rod (1203) inserted in the cylinder (1201). The cylinder (1201) is rotatably coupled with the fixed shaft (9). A through threaded hole is provided on the cylinder (1201), and a tightening bolt (1202) for pressing the rod (1203) is installed in the threaded hole.

3. The anti-clogging disc feeding system as described in claim 2, characterized in that: The lower end of the rod (1203) is provided with horizontally distributed extension plates (1204).

4. The anti-clogging disc feeding system as described in claim 1, characterized in that: The limit switch (10) is located below the fixed position.

5. The anti-clogging disc feeding system as described in claim 1, characterized in that: A main switch (16) is also connected in series on the power supply circuit of the vibration motor (2).

6. The anti-clogging disc feeding system as described in claim 1, characterized in that: Anti-detachment bosses (14) are fixedly provided on both sides of the sensing rod (12) on the fixed shaft (9).

7. The anti-clogging disc feeding system as described in claim 1, characterized in that: A torsion spring (15) is sleeved on the fixed shaft (9). The two ends of the torsion spring (15) are connected to the fixed shaft (9) and the sensing rod (12) respectively. The torsion spring (15) is used to maintain the vertical distribution state of the sensing rod (12).

8. The anti-clogging disc feeding system as described in claim 1, characterized in that: The sensing rod (12) and the limit switch (10) are both located on the scraper (7) near the discharge port (6).

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