Anti-blocking device for weightlessness type feeding machine

Abstract

The anti-blocking device comprises a machine body, a hopper and a conveying cylinder, the conveying cylinder is horizontally connected to the machine body, the hopper is vertically connected to the conveying cylinder, an anti-blocking assembly is arranged in the hopper, and the anti-blocking assembly comprises an anti-blocking motor, a two-way screw, a moving block, a limiting rod and a stirring rod; the two-way screw is rotationally connected to the position, close to a feeding port of the conveying cylinder, in the hopper, the limiting rod is connected into the hopper and is parallel to the two-way screw, the anti-blocking motor is installed on the outer wall of the hopper and is coaxially connected with the two-way screw, the moving block is arranged between the two-way screw and the limiting rod, and the moving block is in threaded fit with the two-way screw. And the stirring rod is rotationally connected to the moving block, a rotating assembly for driving the stirring rod to rotate is arranged on the moving block, and the stirring rod is used for stirring materials. The material conveying device has the effect of improving the material conveying efficiency of the weightlessness type feeding machine.

Description

Technical Field

[0001] This application relates to the field of feeder technology, and in particular to an anti-blocking device for a loss-in-weight feeder. Background Technology

[0002] A loss-in-weight feeder is a device used for precise metering and continuous feeding of materials. It consists of a hopper, a feeder (single or double-shaft screw feeder, etc.), a weighing system, and a regulator. During the feeding process, when material enters the feeder from the hopper, the reduced diameter of the hopper outlet causes compression and friction between the materials, which can easily lead to bridging. This can cause material blockage at the feeder inlet, preventing smooth material transport. Therefore, an anti-blocking device is needed to clear the blockage.

[0003] Chinese Patent No. CN212049617U discloses a loss-in-weight feeder for preventing blockage. It includes a feeder body, a motor housing fixedly connected to the top of the feeder body, a servo motor fixedly connected to the inner top wall of the motor housing, and a drive shaft fixedly connected to the output shaft of the servo motor. This loss-in-weight feeder allows material to be poured into the inner side of the feeder body through a feed pipe. The servo motor drives the drive shaft to rotate, which in turn drives a rotating impeller, a stirring impeller, and a scraper impeller to rotate sequentially. The rotating impeller and stirring impeller uniformly mix the material inside the feeder body to ensure its quality. The scraper impeller scrapes the inner side of the feeder body during rotation, preventing material from sticking and causing blockage.

[0004] Regarding the aforementioned technologies, existing technologies utilize servo motors to drive the scraper impeller and the agitator impeller to rotate, causing the material in the hopper to tumble and fall into the feeding cylinder for material conveying. However, in existing technologies, the agitator impeller and scraper impeller act within the conical hopper, causing the material in the hopper to tumble. The material at the hopper outlet receives relatively low tumbling action, and bridging is mainly concentrated at the hopper outlet. Therefore, there is still a possibility of material clogging at the hopper outlet, reducing the material conveying efficiency of the loss-in-weight feeder. Summary of the Invention

[0005] In order to improve the material conveying efficiency of loss-in-weight feeders, this application provides an anti-blocking device for loss-in-weight feeders.

[0006] This application provides an anti-clogging device for a loss-in-weight feeder, employing the following technical solution:

[0007] An anti-clogging device for a loss-in-weight feeder includes a machine body, a hopper, and a conveying cylinder. The conveying cylinder is horizontally connected to the machine body, and the hopper is vertically connected to the conveying cylinder. An anti-clogging component is installed inside the hopper, comprising an anti-clogging motor, a bidirectional screw, a moving block, a limiting rod, and a stirring rod. The bidirectional screw is rotatably connected inside the hopper near the feed inlet of the conveying cylinder. The limiting rod is connected inside the hopper and is parallel to the bidirectional screw. The anti-clogging motor is mounted on the outer wall of the hopper and coaxially connected to the bidirectional screw. The moving block is disposed between the bidirectional screw and the limiting rod, threadedly engaged with the bidirectional screw and slidably engaged with the limiting rod. The stirring rod is rotatably connected to the moving block, and a rotating component for driving the stirring rod to rotate is provided on the moving block. The stirring rod is used to agitate the material.

[0008] By adopting the above technical solution, during material feeding, the anti-blocking motor is activated, causing the bidirectional screw to rotate, which in turn drives the moving block to move back and forth, causing the stirring rod to move back and forth. In conjunction with the rotating assembly, this achieves the effect of the stirring rod reciprocating and agitating the material, thus clearing the blockage. By setting up the anti-blocking assembly, the material at the feed inlet of the conveying cylinder is agitated, reducing the possibility of material bridging. Compared to existing technologies, this improves the material conveying efficiency of the loss-in-weight feeder.

[0009] Optionally, the bottom wall of the limiting rod is provided with an opening, the bidirectional screw is located inside the limiting rod, the moving block is slidably fitted inside the limiting rod, a moving frame is sleeved on the limiting rod, the moving frame is connected to the moving block, and the stirring rod is rotatably connected to the moving frame.

[0010] By adopting the above technical solution and setting an opening on the bottom wall of the limiting rod, the phenomenon of material entering the bidirectional screw during conveying is reduced, and the possibility of the moving block getting stuck is reduced.

[0011] Optionally, the rotating assembly includes a rotating gear and a connecting rack, the connecting rack being connected to and parallel to the limiting rod, and the rotating gear being connected to the agitating rod and meshing with the connecting rack.

[0012] By adopting the above technical solution, when the stirring rod is rotated, the moving block drives the stirring rod to move, which in turn drives the rotating gear to move. Since the rotating gear meshes with the connecting rack, the rotating gear rotates, thus achieving the effect of rotating the stirring rod.

[0013] Optionally, a plurality of stirring blades are connected to the stirring rod.

[0014] By adopting the above technical solution and setting agitator blades, the agitation range and amplitude of the agitator rod are increased, further improving the material clearing effect.

[0015] Optionally, a rotating ring and a limiting component for restricting the rotation of the rotating ring are provided between the hopper and the feed inlet of the conveying cylinder. The hopper is connected to the machine body, and the rotating ring is rotatably connected to the hopper through a rotating shaft. During material conveying, the rotating ring and the hopper are coaxially arranged.

[0016] By adopting the above technical solution and setting a rotating ring, the limiting component can be loosened during maintenance, and the rotating ring can be moved out of the hopper range, making it convenient to maintain the anti-blocking component.

[0017] Optionally, connecting blocks are connected to the opposite side walls of the movable block, and an extension rod is slidably fitted on the connecting block. A compression spring is provided between the end of the extension rod and the connecting block, and the compression spring is sleeved on the extension rod.

[0018] By adopting the above technical solution and setting an extension rod, the agitation range of the material is further increased, thereby improving the material unblocking effect of the feeder.

[0019] Optionally, the end of the extension rod is connected to an abutting arc block, and a plurality of abutting beads are embedded in the arc wall of the abutting arc block, the abutting beads abutting against the inner wall of the hopper.

[0020] By adopting the above technical solution and setting up the abutting arc block and abutting bead, the friction between the extension rod and the rotating ring is reduced, allowing the extension rod to move smoothly with the changes in the inner wall of the rotating ring.

[0021] Optionally, the limiting component includes a positioning block, a fixing block, a locking claw, and a connecting spring. The positioning block is connected to the side wall of the hopper, the fixing block is connected to the rotating ring, and the fixing block has a locking groove. A connecting frame is connected to the hopper, and the connecting frame has a clearance groove. The locking claw is rotatably connected to the connecting frame, and a connecting shaft is connected to the locking claw. The connecting shaft passes through the clearance groove, and an abutment ring is sleeved on the connecting shaft. The connecting spring is sleeved on the connecting shaft and located between the locking claw and the abutment ring. When limiting, the rotating ring abuts against the positioning block, and the locking claw engages with the fixing block.

[0022] By adopting the above technical solution, when the rotating ring is restricted, the rotating ring rotates, the locking claw abuts against the fixed block, the locking claw rotates, the connecting spring is compressed, until the rotating ring abuts against the positioning block, at which point the locking claw is restored by the force of the connecting spring and engages with the fixed block, thereby restricting the degree of freedom of the rotating ring and achieving the effect of restricting the rotating ring.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. During material feeding, the anti-blocking motor is activated, causing the bidirectional screw to rotate, which in turn drives the moving block to reciprocate, causing the agitator to reciprocate. This, in conjunction with the rotating assembly, achieves the effect of the agitator reciprocatingly stirring the material, thus clearing the blockage. By incorporating the anti-blocking assembly, the material at the feed inlet of the conveyor cylinder is agitated, reducing the possibility of material bridging. Compared to existing technologies, this improves the material conveying efficiency of the loss-in-weight feeder.

[0025] 2. When the rotating ring is restricted, the rotating ring rotates, the locking claw abuts against the fixed block, the locking claw rotates, the connecting spring is compressed until the rotating ring abuts against the positioning block. At this time, the locking claw is restored by the force of the connecting spring and engages with the fixed block, thereby restricting the degree of freedom of the rotating ring and achieving the effect of restricting the rotating ring. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of the anti-blocking device for the loss-in-weight feeder in the embodiments of this application.

[0027] Figure 2 This is a schematic diagram of the rotating ring in an embodiment of this application.

[0028] Figure 3 This is a schematic diagram of the structure of the limiting component in the embodiments of this application.

[0029] Figure 4 This is an exploded view used in the embodiments of this application to illustrate the structure of the anti-blocking component.

[0030] Figure 5 This is a schematic diagram of the rotating component in an embodiment of this application.

[0031] Figure 6 This is a cross-sectional view used in the embodiments of this application to illustrate the structure of the anti-blocking component.

[0032] Figure 7 This is an exploded view used to illustrate the extension rod structure in the embodiments of this application.

[0033] Explanation of reference numerals in the attached drawings: 1. Machine body; 11. Hopper; 12. Conveying cylinder; 2. Rotating ring; 3. Restricting component; 31. Positioning block; 32. Fixing block; 33. Clamping claw; 331. Connecting shaft; 34. Connecting spring; 4. Anti-blocking component; 41. Anti-blocking motor; 42. Bidirectional screw; 43. Moving block; 431. Moving frame; 44. Restricting rod; 45. Stirring rod; 451. Stirring blade; 5. Rotating component; 51. Rotating gear; 52. Connecting rack; 6. Connecting block; 61. Extension rod; 62. Abutting arc block; 63. Abutting bead; 64. Compression spring; 65. Restricting strip. Detailed Implementation

[0034] The following is in conjunction with the appendix Figures 1-7This application will be described in further detail.

[0035] This application discloses an anti-clogging device for a loss-in-weight feeder. (Refer to...) Figure 1 The anti-clogging device for the loss-in-weight feeder includes a body 1, a hopper 11 and a conveying cylinder 12. The conveying cylinder 12 is horizontally fixedly connected to the body 1, and the hopper 11 is fixedly connected to the body 1 and is coaxially arranged with the feed inlet of the conveying cylinder 12.

[0036] Reference Figure 2 and Figure 3 A rotating ring 2 is rotatably connected to the hopper 11 via a rotating shaft. The rotating ring 2 is located between the hopper 11 and the feed inlet of the conveying cylinder 12. During material conveying, the rotating ring 2 is coaxially arranged with the hopper 11. A limiting component 3 is provided on the hopper 11, which includes a positioning block 31, a fixing block 32, a locking claw 33, and a connecting spring 34. A connecting frame is fixedly connected to the hopper 11, and the connecting frame has a clearance groove. The locking claw 33 is rotatably connected to the connecting frame, and a connecting shaft 331 is fixedly connected to the locking claw 33. The connecting shaft 331 passes through the clearance groove, and an abutment ring is sleeved on the connecting shaft 331.

[0037] Reference Figure 2 and Figure 3 The connecting spring 34 is sleeved on the connecting shaft 331 and is located between the locking claw 33 and the abutment ring. The positioning block 31 is fixedly connected to the hopper 11, and the fixing block 32 is fixedly connected to the rotating ring 2. The fixing block 32 has a locking groove.

[0038] When the rotating ring 2 is restricted, the rotating ring 2 rotates, the locking claw 33 abuts against the fixed block 32, the locking claw 33 rotates, the connecting spring 34 is compressed until the rotating ring 2 abuts against the positioning block 31. At this time, the locking claw 33 rotates under the force of the connecting spring 34 and engages with the fixed block 32, thereby restricting the degree of freedom of the rotating ring 2 and achieving the effect of restricting the rotating ring 2.

[0039] Reference Figure 2 , Figure 4 and Figure 5 An anti-clogging component 4 is provided on the rotating ring 2. The anti-clogging component 4 includes an anti-clogging motor 41, a bidirectional screw 42, a moving block 43, a limiting rod 44, and a stirring rod 45. The limiting rod 44 is horizontally fixedly connected inside the rotating ring 2, and its bottom wall is open. The bidirectional screw 42 is rotatably connected inside the rotating ring 2 and located inside the limiting rod 44. The anti-clogging motor 41 is mounted on the rotating ring 2 and coaxially connected to the bidirectional screw 42.

[0040] Reference Figure 4 , Figure 5 and Figure 6The movable block 43 is slidably fitted within the limiting rod 44 and threadedly fitted with the bidirectional screw 42. A movable frame 431 is fixedly connected to the movable block 43, and the movable block 43 is slidably fitted with the limiting rod 44. The stirring rod 45 is vertically rotatably connected to the movable frame 431. Several stirring blades 451 are fixedly connected to the stirring rod 45, and the stirring blades 451 are used to increase the stirring range and amplitude of the stirring rod 45.

[0041] Reference Figure 4 and Figure 5 A rotating assembly 5 is provided on the movable frame 431. The rotating assembly 5 includes a rotating gear 51 and a connecting rack 52. The connecting rack 52 is fixedly connected to the limiting rod 44 and is arranged parallel to the limiting rod 44. The rotating gear 51 is fixedly connected to the stirring rod 45 and meshes with the connecting rack 52.

[0042] During material feeding, the anti-blocking motor 41 is started, causing the bidirectional screw 42 to rotate, the moving block 43 to move, which in turn moves the moving frame 431, causing the stirring rod 45 to move. Through the engagement of the rotating ring 2-wheel and the connecting rack 52, the stirring rod 45 rotates, which in turn drives the stirring blade 451 to rotate, thus achieving the effect of reciprocating stirring of the material.

[0043] Reference Figure 4 and Figure 7 Connecting blocks 6 are fixedly connected to the opposite side walls of the moving block 43, and the two connecting blocks 6 are arranged symmetrically about the stirring rod 45. An extension rod 61 is slidably fitted onto the connecting block 6, and a limiting strip 65 is fixedly connected to the connecting block 6. A sliding groove is opened on the extension rod 61, and the limiting strip 65 is slidably fitted into the sliding groove. An abutting arc block 62 is fixedly connected to the end of the extension rod 61. Several abutting beads 63 are embedded in the arc wall of the abutting arc block 62. The abutting beads 63 abut against the inner wall of the rotating ring 2, and the abutting beads 63 are used to reduce the friction between the extension rod 61 and the inner wall of the rotating ring 2. A pressure spring 64 is sleeved on the extension rod 61, and the pressure spring 64 is located between the connecting block 6 and the abutting arc block 62.

[0044] When the moving block 43 moves, it drives the connecting block 6 to move, and the extension rod 61 moves. The contact bead 63 contacts the inner wall of the rotating ring 2, causing the extension rod 61 to move. The pressure spring 64 is compressed, causing the extension rod 61 to stir the material in other areas inside the rotating ring 2 when it moves. The extension rod 61 moves with the change of the inner wall of the rotating ring 2, achieving the effect of further stirring the material.

[0045] The implementation principle of an anti-blocking device for a loss-in-weight feeder according to an embodiment of this application is as follows: During material feeding, the anti-blocking motor 41 is started, causing the bidirectional screw 42 to rotate, the moving block 43 to move back and forth, driving the stirring rod 45 to move back and forth, and the stirring blade 451 to rotate to stir the material. At the same time, the extension rod 61 is driven to move. As the contact bead 63 contacts the inner wall of the rotating ring 2, the extension rod 61 moves, thereby achieving the effect of stirring the material inside the rotating ring 2.

[0046] During maintenance, press the end of the locking claw 33 to make the locking claw 33 lift up and disengage from the locking groove. At this time, move the rotating ring 2 to move the anti-blocking component 4 out of the range of the hopper 11, and the anti-blocking component 4 can be maintained. When closed, the rotating ring 2 is limited by the positioning block 31, and the locking claw 33 is engaged with the fixing block 32 to restrict the movement of the rotating ring 2.

[0047] By setting the anti-blocking component 4, the material at the feed inlet of the conveying cylinder 12 is agitated, reducing the possibility of material bridging. Compared with the existing technology, this improves the material conveying efficiency of the loss-in-weight feeder.

[0048] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A kind of anti-blocking device for weightless feeder, including machine body (1), hopper (11) and conveying cylinder (12), the conveying cylinder (12) is horizontally connected on the machine body (1), the hopper (11) is vertically connected on the conveying cylinder (12), it is characterized by: The hopper (11) is internally provided with a anti-blocking assembly (4), the anti-blocking assembly (4) comprises an anti-blocking motor (41), a bidirectional screw rod (42), a moving block (43), a limiting rod (44) and an agitating rod (45), the bidirectional screw rod (42) is rotationally connected in the hopper (11) at a position close to the inlet of the conveying cylinder (12), the limiting rod (44) is connected in the hopper (11) and is arranged in parallel with the bidirectional screw rod (42), the anti-blocking motor (41) is mounted on the outer wall of the hopper (11) and is coaxially connected with the bidirectional screw rod (42), the moving block (43) is arranged between the bidirectional screw rod (42) and the limiting rod (44), the moving block (43) is threadedly connected with the bidirectional screw rod (42) and is slidingly connected with the limiting rod (44), the agitating rod (45) is rotationally connected on the moving block (43), the moving block (43) is provided with a rotating assembly (5) for driving the agitating rod (45) to rotate, and the agitating rod (45) is used for stirring materials.

2. A choke for a loss-in-weight feeder according to claim 1, characterized in that: The bottom wall of the limiting rod (44) is provided with an opening, the bidirectional screw rod (42) is located inside the limiting rod (44), the moving block (43) is slidingly connected inside the limiting rod (44), a moving frame (431) is sleeved on the limiting rod (44), the moving frame (431) is connected with the moving block (43), and the agitating rod (45) is rotationally connected on the moving frame (431).

3. A choke for a loss-in-weight feeder as claimed in claim 2, wherein: The rotating assembly (5) comprises a rotating gear (51) and a connecting rack (52), the connecting rack (52) is connected on the limiting rod (44) and is parallel to the limiting rod (44), and the rotating gear (51) is connected on the agitating rod (45) and is engaged with the connecting rack (52).

4. The anti-jamming device for a loss-in-weight feeder according to claim 1, characterized in that: The agitating rod (45) is connected with a plurality of agitating blades (451).

5. The anti-jamming device for a loss-in-weight feeder according to claim 1, characterized in that: A rotating ring (2) and a limiting assembly (3) for limiting the rotation of the rotating ring (2) are arranged between the hopper (11) and the inlet of the conveying cylinder (12), the hopper (11) is connected on the machine body (1), the rotating ring (2) is rotationally connected with the hopper (11) through a rotating shaft, and the rotating ring (2) is coaxially arranged with the hopper (11) during feeding.

6. The anti-jamming device for a loss-in-weight feeder according to claim 2, characterized in that: The connecting blocks (6) are connected on the opposite two side walls of the moving block (43), the extending rods (61) are slidingly connected on the connecting blocks (6), the pressure springs (64) are arranged between the end portions of the extending rods (61) and the connecting blocks (6), and the pressure springs (64) are sleeved on the extending rods (61).

7. A choke for a loss-in-weight feeder according to claim 6, characterised in that: The end portions of the extending rods (61) are connected with abutting arc blocks (62), a plurality of abutting beads (63) are embedded on the arc walls of the abutting arc blocks (62), and the abutting beads (63) abut against the inner wall of the hopper (11).

8. The anti-jamming device for a loss-in-weight feeder according to claim 5, characterized in that: The limiting component (3) comprises a positioning block (31), a fixing block (32), a clamping claw (33) and a connecting spring (34), the positioning block (31) is connected on the side wall of the hopper (11), the fixing block (32) is connected on the rotating ring (2), the fixing block (32) is provided with a clamping groove, the hopper (11) is connected with a connecting frame, the connecting frame is provided with an avoiding groove, the clamping claw (33) is rotatably connected on the connecting frame, the clamping claw (33) is connected with a connecting shaft (331), the connecting shaft (331) penetrates through the avoiding groove, the connecting shaft (331) is sleeved with a resisting ring, the connecting spring (34) is sleeved on the connecting shaft (331) and located between the clamping claw (33) and the resisting ring, when limiting, the rotating ring (2) abuts against the positioning block (31), and the clamping claw (33) is clamped with the fixing block (32).

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