Screw conveying and feeding device

Abstract

The utility model discloses a spiral conveying and feeding device which comprises a spiral conveyor and a feeding mechanism, the spiral conveyor is provided with a feeding port, the feeding mechanism is arranged at the feeding port, the feeding mechanism comprises a feeding hopper and a discharging pipeline, the discharging pipeline is divided into an upper pipeline and a lower pipeline, and a flexible connection structure is arranged between the upper pipeline and the lower pipeline. A baffle is arranged at the bottom in the upper pipeline, discharging holes are evenly formed in the baffle, an inserting plate matched with the baffle is arranged in the flexible connection structure, mounting plates are fixedly connected to the two sides of the upper pipeline and located above the inserting plate, driving motors are fixedly connected to the bottoms of the mounting plates, and the output ends of the driving motors are fixedly connected with eccentric plates. The eccentric plate is positioned above the insertion plate; according to the utility model, an intermittent blanking mode is adopted, so that the blockage of a blanking pipeline is avoided, and the condition that materials are accumulated at the feeding end of the spiral conveyer is also avoided, so that the spiral conveyer can continuously and stably convey the materials.

Description

Technical Field

[0001] The utility model relates to the technical field of material conveying equipment, in particular to a spiral conveying feeding device. Background Art

[0002] A screw conveyor is a machine that uses a motor to drive the screw to rotate and push materials to achieve the purpose of conveying. Among them, the shaft screw conveyor is suitable for non-sticky dry powder materials and small particle materials. It can be used with pneumatic force to achieve the feeding operation of some special equipment. Most existing screw conveyors adopt a continuous feeding operation mode, which can ensure that the feeding will not be blocked and can also ensure the stability of the feeding. However, the continuous feeding equipment is expensive and takes up a large working space. Some screw conveyors use the method of increasing the diameter of the feed pipe to avoid blockage, but this will cause the material to accumulate at the feed end of the screw conveyor, placing a large load on the drive motor. Utility Model Content

[0003] The purpose of the utility model is to provide a screw conveying feeding device, which adopts an intermittent feeding method, which will neither cause blockage of the feeding pipeline nor accumulation of materials at the feeding end of the screw conveyor, thereby enabling the screw conveyor to transport materials continuously and stably.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a screw conveying feeding device, comprising a screw conveyor and a feeding mechanism, wherein a rotating motor is installed at one end of the screw conveyor, a discharge port is provided at the top of the other end of the screw conveyor, an air inlet is provided below the discharge port, and a feeding port is provided at one end of the screw conveyor close to the rotating motor; the feeding mechanism comprises a feeding hopper and a discharge pipe, the discharge pipe is a square pipe, the feed hopper is installed at the top of the discharge pipe, and the bottom of the discharge pipe is installed at the feed port, the discharge pipe is divided into an upper pipe and a lower pipe, a soft connection structure is provided between the upper pipe and the lower pipe, a baffle is provided at the bottom of the upper pipe, and discharge holes are evenly provided on the baffle, a plug plate matching the baffle is provided in the soft connection structure, two ends of the plug plate pass through the soft connection structure and are arranged on the outside of the soft connection structure, two sides of the upper pipe are fixedly connected with mounting plates, the mounting plate is located above the plug plate, the bottom of the mounting plate is fixedly connected with a driving motor, the output end of the driving motor is fixedly connected with an eccentric plate, and the eccentric plate is located above the plug plate.

[0005] Optionally, a tension spring is fixedly connected between the mounting plate and the plug plate.

[0006] Optionally, a guide rod is provided on the plug plate, the guide rod is located inside the tension spring, and the top of the guide rod passes through the mounting plate and is slidably connected to the mounting plate.

[0007] Optionally, the top of the plug plate is uniformly provided with a plurality of plug blocks matched with the blanking holes, and the two sides of the plug block are provided with inclined surfaces, and a through hole is formed between adjacent plug blocks.

[0008] Optionally, the flexible connection structure adopts a corrugated pipe.

[0009] Optionally, the blade spacing of the screw conveyor gradually increases from the feeding end to the discharging end.

[0010] The spiral conveying and feeding device has the following advantages:

[0011] (1) Under normal circumstances, the baffle cooperates with the plug plate, the blanking pipe is in a closed state, and the material cannot fall into the screw conveyor, after the driving motor is started, the driving motor drives the eccentric plate to rotate, when the eccentric plate hits the plug plate, the plug plate will be pressed downward, so that the plug plate is separated from the baffle, the blanking pipe is opened, and the material falls into the screw conveyor, and the material cannot be accumulated at the feeding end of the screw conveyor, and the material conveying is continuous and stable.

[0012] (2) The extension spring is beneficial to the reset of the plug plate, and the material leakage cannot occur.

[0013] (3) The guide rod can guide the up-down movement of the plug plate, avoid the inclination and jamming of the plug plate, and ensure the stability of the material blanking. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a structural schematic view of the utility model.

[0015] Figure 2 It is a structural schematic view of the feeding mechanism.

[0016] Figure 3 It is a schematic view when the baffle is separated from the plug plate.

[0017] Figure 4 It is a top view of the baffle.

[0018] Figure 5 It is a top view of the plug plate. DETAILED DESCRIPTION

[0019] The utility model will be further described below in combination with the drawings, and the following description takes the direction in the drawings as the reference. Figure 1

[0020] As shown in the drawings, Figure 1-Figure 5 ​As shown, a screw conveying feeding device includes a horizontally arranged screw conveyor 1 and a feeding mechanism 2. A rotating motor 3 is installed at the left end of the screw conveyor 1 to drive the blades 4 in the screw conveyor 1 to rotate. The spacing between the blades 4 in the screw conveyor 1 from the feed end to the discharge end gradually increases. A discharge port 5 is provided at the top of the right end of the screw conveyor 1. An air inlet 6 is provided below the discharge port 5. Gas carries the material from the discharge port 5 to the corresponding equipment. A feed port 7 is provided at the top of the left end of the screw conveyor 1. The feeding mechanism 2 is connected to the feed port 7. The feeding mechanism 2 includes a feed hopper 8 and a discharge pipe 9. The discharge pipe 9 is a square tube. The feed hopper 8 is installed on the top of the discharge pipe 9. The bottom of the discharge pipe 9 is installed at the feed port 7. The discharge pipe 9 is divided into an upper pipe 10 and a lower pipe 11. A flexible connection structure is provided between the upper pipe 10 and the lower pipe 11. The flexible connection structure adopts a bellows 12. A baffle 13 is provided at the bottom of the upper pipe 10. The baffle 13 is evenly provided with discharge holes 14. The bellows 12 is provided with a plug plate 15 that matches the baffle 13. A number of plug blocks 16 that match the discharge holes 14 are evenly provided on the top of the plug plate 15. The plug blocks 16 are provided with inclined surfaces on both sides, and through holes 17 are opened between adjacent plug blocks 16. The left and right ends of the plug plates 15 pass through the side walls of the bellows 12 and are arranged outside the bellows 12. The left and right sides of the upper pipe 10 are fixedly connected to mounting plates 18. The mounting plates 18 are located above the plug plates 15. The bottom of the mounting plates 18 is fixedly connected to a drive motor 19. The output end of the drive motor 19 is fixedly connected to an eccentric plate 20. The eccentric plate 20 is located above the plug plates 15. A tension spring 21 is fixedly connected between the mounting plate 18 and the inserting plate 15. The tension spring 21 constantly pulls the inserting plate 15 upward, facilitating its reset. A vertical guide rod 22 is provided in the area of ​​the inserting plate 15 outside the bellows 12. The guide rod 22 is located within the tension spring 21. The top of the guide rod 22 passes through the mounting plate 18 and is slidably connected to the mounting plate 18. The guide rod 22 guides the upward and downward movement of the inserting plate 15, preventing it from tilting or getting stuck, and ensuring stable material unloading.

[0021] Under normal conditions, under the action of tension spring 21, insert plate 15 drives insert block 16 upward and inserts it into discharge hole 14 of baffle 13, closing discharge pipe 9 and preventing material from falling into screw conveyor 1. When drive motor 19 is activated, it rotates eccentric plate 20, which intermittently pushes insert plate 15 downward. Insert block 16 then drops from discharge hole 14, flows along the inclined surfaces on either side of insert block 16, passes through through-hole 17, and falls into screw conveyor 1. As insert plate 15 and baffle 13 continue to close and open, material in feed hopper 8 intermittently falls into the feed end of screw conveyor 1 and, driven by blades 4, is continuously conveyed to discharge port 5.

[0022] The embodiments described above are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

Claims

1. A spiral feeding device, characterized in that: The invention comprises a screw conveyor and a feeding mechanism, wherein a rotating motor is installed at one end of the screw conveyor, a discharge port is arranged at the top of the other end of the screw conveyor, an air inlet is arranged below the discharge port, and a feeding port is arranged at one end of the screw conveyor close to the rotating motor; the feeding mechanism comprises a feeding hopper and a discharge pipe, the discharge pipe is a square pipe, the feed hopper is installed on the top of the discharge pipe, the bottom of the discharge pipe is installed at the feeding port, the discharge pipe is divided into an upper pipe and a lower pipe, a soft connection structure is provided between the upper pipe and the lower pipe, a baffle is provided at the bottom of the upper pipe, and discharge holes are evenly provided on the baffle, a plug plate matching the baffle is provided in the soft connection structure, two ends of the plug plate pass through the soft connection structure and are arranged on the outside of the soft connection structure, mounting plates are fixedly connected on both sides of the upper pipe, the mounting plates are located above the plug plate, the bottom of the mounting plate is fixedly connected with a driving motor, the output end of the driving motor is fixedly connected with an eccentric plate, and the eccentric plate is located above the plug plate.

2. The screw conveying feeding device according to claim 1, characterized in that: A tension spring is fixedly connected between the mounting plate and the inserting plate.

3. The screw conveying feeding device according to claim 2, characterized in that: A guide rod is provided on the plug plate. The guide rod is located inside the tension spring. The top of the guide rod passes through the mounting plate and is slidably connected to the mounting plate.

4. The screw conveying feeding device according to claim 1, characterized in that: A plurality of inserting blocks matching the blanking holes are evenly arranged on the top of the inserting plate, inclined surfaces are arranged on both sides of the inserting blocks, and through holes are opened between adjacent inserting blocks.

5. The screw conveying feeding device according to claim 1, characterized in that: The soft connection structure adopts bellows.

6. The screw conveying feeding device according to claim 1, characterized in that: The blade spacing in the screw conveyor gradually increases from the feed end to the discharge end.

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