A screw feeder

Abstract

The utility model provides a spiral feeder. The spiral feeder includes: the guide barrel; the feed inlet and the discharge gate of opening on the guide barrel; the spiral rod of rotation installation on the inner wall of guide barrel; the variable frequency motor of fixed installation in one side of guide barrel and through the shaft coupling with spiral rod is connected; the rotating speed sensor of installation on the guide barrel is used for monitoring the rotating speed of spiral rod; the hopper of setting on the feed inlet; the weighing mechanism of installation on the guide barrel is used for carrying out real -time weighing to the material in the hopper; the stirring mechanism of installation on the hopper is used for stirring the material in the hopper. The spiral feeder provided by the utility model has the advantages of the stirring anti -blocking function of material, the monitoring function of the rotating speed of spiral rod, the high advantage of the measurement precision of material.

Description

Technical Field

[0001] This utility model relates to the field of screw feeder technology, and in particular to a screw feeder. Background Technology

[0002] A screw feeder is an industrial device that integrates stable flow conveying, weighing, and quantitative control of powder materials. It is widely used in industries such as building materials, metallurgy, power, chemicals, grain, and coal. Its core function is to propel materials through the rotation of the screw shaft, achieving a continuous, uniform, and controllable feeding process.

[0003] However, existing screw feeders often lack the functions of agitating, preventing agglomeration and blockage of materials, as well as monitoring the screw speed, resulting in low metering accuracy of materials.

[0004] Therefore, it is necessary to provide a screw feeder to solve the above-mentioned technical problems. Utility Model Content

[0005] To address the technical problems of existing screw feeders, which often lack functions for mixing, preventing agglomeration and clogging of materials, lack of monitoring function for screw rotation speed, and low metering accuracy of materials, this utility model provides a screw feeder.

[0006] The screw feeder provided by this utility model includes: a guide cylinder; a feed inlet at the top of one end of the guide cylinder and a discharge outlet at the bottom of the other end of the guide cylinder; a screw rod rotatably mounted on the inner wall of the guide cylinder; a variable frequency motor fixedly mounted on one side of the guide cylinder and connected to the screw rod via a coupling; a speed sensor mounted on the guide cylinder for monitoring the speed of the screw rod; a hopper disposed on the feed inlet; a weighing mechanism installed between the guide cylinder and the hopper for real-time weighing of the material in the hopper; and a stirring mechanism installed on the hopper for stirring the material in the hopper.

[0007] Preferably, the weighing mechanism includes: a sliding rod fixedly installed on the guide cylinder and evenly distributed around the hopper; a fixed sleeve plate fixedly sleeved on the middle of the sliding rod; a sliding plate slidably sleeved on the sliding rod and fixedly connected to the hopper; an annular weighing sensor slidably sleeved on the sliding rod and located between the sliding plate and the fixed sleeve plate; and a limiting block fixedly installed at the top of the sliding rod.

[0008] Preferably, the stirring mechanism includes: an L-shaped frame fixedly installed at one end on the top edge of the hopper; a stirring rod rotatably installed at the other end of the L-shaped frame and perpendicular to the center of the hopper; and a stirring motor fixedly installed at the other end of the L-shaped frame and connected to the stirring rod via a coupling.

[0009] Preferably, a base is fixedly installed at the bottom of the guide cylinder, and a retractable displacement mechanism is provided on the base.

[0010] Preferably, the retractable displacement mechanism includes: two screws vertically rotatably mounted on the inner bottom wall of the base; a lifting plate threaded onto the two screws; casters fixedly mounted at both ends of the bottom of the lifting plate; an clearance opening at the bottom of the base for the casters to extend out; a dual-axis motor fixedly mounted on the inner top wall of the base; two transmission rods mounted on the output shaft of the dual-axis motor via a coupling; and a bevel gear fixedly mounted on the end of the transmission rod away from the dual-axis motor and meshing with the screws.

[0011] Preferably, two limiting rods passing through the lifting plate are fixedly connected between the inner bottom wall and the inner top wall of the base, and the limiting rods are slidably connected to the lifting plate.

[0012] Preferably, the bottom of the base is fixedly equipped with anti-slip pads.

[0013] Compared with related technologies, the screw feeder provided by this utility model has the following beneficial effects: This utility model provides a screw feeder. A variable frequency motor drives a screw to rotate, which conveys materials. A speed sensor monitors the screw's rotation speed, improving feeding accuracy. A hopper holds the material and guides it into a feed cylinder. A weighing mechanism weighs the material in the hopper in real time, further enhancing feeding accuracy. A stirring mechanism agitates the material in the hopper to prevent clumping. Multiple ring-shaped weighing sensors also provide real-time weighing of the material in the hopper, further improving feeding accuracy. A stirring motor drives the stirring mechanism. The rotating rod agitates the material in the hopper, preventing clumping. A retractable displacement mechanism and guide cylinder are mounted on the base. A dual-axis motor drives two transmission rods, which in turn drive two screws via multiple bevel gears. The screws move the lifting plate and two casters up and down. The downward-moving casters support the feeder, facilitating its movement. Limit rods guide and limit the lifting plate, and clearance openings allow for easy movement of the casters. Anti-slip pads enhance the feeder's stability. Attached Figure Description

[0014] Figure 1 A schematic diagram of a preferred embodiment of the screw feeder provided by this utility model; Figure 2 for Figure 1 An enlarged schematic diagram of part A shown in the image; Figure 3 for Figure 1 The enlarged schematic diagram of part B shown in the figure.

[0015] Labels in the diagram: 1. Guide cylinder; 2. Feed inlet; 3. Discharge outlet; 4. Screw rod; 5. Variable frequency motor; 6. Speed ​​sensor; 7. Hopper; 8. Sliding rod; 9. Fixed sleeve; 10. Ring weighing sensor; 11. Sliding plate; 12. Limiting block; 13. L-shaped frame; 14. Stirring rod; 15. Stirring motor; 16. Base; 17. Screw; 18. Lifting plate; 19. Casters; 20. Dual-axis motor; 21. Transmission rod; 22. Bevel gear; 23. Limiting rod; 24. Clearance opening; 25. Anti-slip pad; 26. Controller. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Please refer to the following: Figure 1-3 The screw feeder includes: a guide cylinder 1; a feed inlet 2 at the top of one end of the guide cylinder 1 and a discharge outlet 3 at the bottom of the other end of the guide cylinder 1; a screw rod 4 rotatably mounted on the inner wall of the guide cylinder 1; a variable frequency motor 5 fixedly mounted on one side of the guide cylinder 1 and connected to the screw rod 4 via a coupling; a speed sensor 6 mounted on the guide cylinder 1 for monitoring the speed of the screw rod 4; a hopper 7 disposed on the feed inlet 2; a weighing mechanism installed between the guide cylinder 1 and the hopper for real-time weighing of the material in the hopper 7; and a weighing mechanism installed in the hopper. The stirring mechanism on 7 is used to stir the material in the hopper 7. The screw rod 4 is driven to rotate by the frequency conversion motor 5. The rotation of the screw rod 4 can convey the material. The speed sensor 6 can monitor the speed of the screw rod 4, thereby improving the metering accuracy of feeding. The speed sensor is a non-contact magnetoelectric or laser type. The hopper 7 can hold the material and guide the material into the guide cylinder 1. The weighing mechanism can weigh the material in the hopper 7 in real time, thereby improving the metering accuracy of feeding. The stirring mechanism can stir the material in the hopper 7 to prevent the material from clumping.

[0018] The weighing mechanism includes: a sliding rod 8 fixedly installed on the guide cylinder 1 and evenly distributed around the hopper; a fixed sleeve plate 9 fixedly sleeved in the middle of the sliding rod 8; a sliding plate 11 slidably sleeved on the sliding rod 8 and fixedly connected to the hopper 7; an annular weighing sensor 10 slidably sleeved on the sliding rod 8 and located between the sliding plate and the fixed sleeve plate, the annular weighing sensor 10 being a Siemens SIWAREX R RN series; and a limiting block 12 fixedly installed at the top of the sliding rod 8. The weight of the hopper is transmitted to the annular weighing sensor through the sliding plate. Multiple annular weighing sensors 10 can weigh the material in the hopper 7 in real time, thereby improving the metering accuracy of the feeding.

[0019] The stirring mechanism includes: an L-shaped frame 13 fixedly installed at one end on the top edge of the hopper 7; a stirring rod 14 rotatably installed at the other end of the L-shaped frame 13 and perpendicular to the center of the hopper; and a stirring motor 15 fixedly installed at the other end of the L-shaped frame 13 and connected to the stirring rod 14 via a coupling. The stirring motor 15 is model HTYPG90S-8. The stirring motor 15 drives the stirring rod 14 to rotate, and the rotation of the stirring rod 14 can stir the material in the hopper 7 to prevent the material from clumping.

[0020] A base 16 is fixedly installed at the bottom of the guide cylinder 1. A retractable displacement mechanism is provided on the base 16. The retractable displacement mechanism can be installed on the base 16 and support the guide cylinder 1.

[0021] The retractable displacement mechanism includes: two screws 17 vertically rotatably mounted on the inner bottom wall of the base 16; a lifting plate 18 threaded onto the two screws 17; casters 19 fixedly mounted at both ends of the bottom of the lifting plate 18; an clearance opening 24, which is opened at the bottom of the base for the casters to extend out; a dual-axis motor 20 fixedly mounted on the inner top wall of the base 16, the model of the dual-axis motor 20 being STP-28D300X; two transmission rods 21 mounted on the output shaft of the dual-axis motor 20 via a coupling; and bevel gears 22 fixedly mounted on the end of the transmission rods 21 away from the dual-axis motor and meshing with the screws 17, wherein the dual-axis motor 20 drives the two transmission rods 21 to rotate, and the two transmission rods 21 drive the two screws 17 to rotate via four bevel gears 22, the rotation directions of the two screws must be opposite, and the thread directions of the two screws must be the same. The rotation of the two screws 17 drives the lifting plate 18 and the two casters 19 to move up and down and extend out of the bottom opening. The feeder can be supported by the two downward-moving casters 19, making it easier to move the feeder.

[0022] Two limiting rods 23 are fixedly connected between the inner bottom wall and the inner top wall of the base 16, passing through the lifting plate. The limiting rods 23 are slidably connected to the lifting plate 18, and the lifting plate 18 can be guided and limited by the limiting rods 23.

[0023] The bottom of the base 16 is fixedly equipped with anti-slip pads 25. The stirring motor, the frequency conversion motor and the dual-shaft motor can be operated independently. Alternatively, a controller 26 connected to the stirring motor, the frequency conversion motor and the dual-shaft motor can be installed on the guide cylinder 1. The opening 24 can be used to avoid the lifting and storage of the casters 19. The anti-slip pads 25 can improve the stability of the feeder. The controller 26 can be used to operate and control the feeder.

[0024] The working principle of the screw feeder provided by this utility model is as follows: Material is fed into hopper 7, and stirring motor 15 drives stirring rod 14 to rotate. Stirring rod 14 can stir the material in hopper 7 to prevent material from clumping. Multiple ring weighing sensors 10 can weigh the material in hopper 7 in real time, thereby improving the metering accuracy of feeding. The material in the hopper 7 is introduced into the guide cylinder 1 through the feed inlet 2. The screw rod 4 is driven to rotate by the variable frequency motor 5. The rotation of the screw rod 4 can guide the material entering the guide cylinder 1 to the discharge outlet 3. The material is discharged through the discharge outlet 3. The rotation speed of the screw rod 4 can be monitored by the speed sensor 6, thereby improving the metering accuracy of feeding. The dual-axis motor 20 drives two transmission rods 21 to rotate. The two transmission rods 21 drive two screws 17 to rotate through multiple bevel gears 22. The rotation of the two screws 17 drives the lifting plate 18 and multiple casters 19 to move up and down. The multiple casters 19 that move downward can support the feeder, making it easier to move the feeder.

[0025] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A screw feeder, characterized in that include: Feed cylinder; The feed inlet is located at the top of one end of the feed tube, and the discharge outlet is located at the bottom of the other end of the feed tube. A rotating screw rod is mounted on the inner wall of the feed cylinder; a variable frequency motor is fixedly mounted on one side of the feed cylinder and connected to the screw rod via a coupling; a speed sensor is mounted on the feed cylinder to monitor the rotational speed of the screw rod; a hopper is installed on the feed inlet; a weighing mechanism is installed between the feed cylinder and the hopper to weigh the material in the hopper in real time; and a stirring mechanism is installed on the hopper to stir the material in the hopper.

2. A screw feeder according to claim 1, characterized in that The weighing mechanism includes: a sliding rod fixedly installed on the guide cylinder and evenly distributed around the hopper; a fixed sleeve plate fixedly sleeved in the middle of the sliding rod; a sliding plate slidably sleeved on the sliding rod and fixedly connected to the hopper; an annular weighing sensor slidably sleeved on the sliding rod and located between the sliding plate and the fixed sleeve plate; and a limiting block fixedly installed at the top of the sliding rod.

3. The screw feeder of claim 1, wherein, The stirring mechanism includes: an L-shaped frame fixedly installed at one end on the top edge of the hopper; a stirring rod rotatably installed at the other end of the L-shaped frame and perpendicular to the center of the hopper; and a stirring motor fixedly installed at the other end of the L-shaped frame and connected to the stirring rod via a coupling.

4. The screw feeder of claim 1, wherein, The bottom of the feed cylinder is fixedly installed with a base, and the base is provided with a retractable displacement mechanism.

5. The screw feeder according to claim 4, characterized in that, The retractable displacement mechanism includes: two screws vertically and rotatably mounted on the inner bottom wall of the base; a lifting plate threaded onto the two screws; casters fixedly mounted at both ends of the bottom of the lifting plate; an clearance opening at the bottom of the base for the casters to extend out; a dual-axis motor fixedly mounted on the inner top wall of the base; two transmission rods mounted on the output shaft of the dual-axis motor via a coupling; and a bevel gear fixedly mounted on the end of the transmission rod away from the dual-axis motor and meshing with the screws.

6. A screw feeder according to claim 5, characterised in that Two limiting rods passing through the lifting plate are fixedly connected between the inner bottom wall and the inner top wall of the base, and the limiting rods are slidably connected to the lifting plate.

7. The screw feeder according to claim 4, characterized in that, The bottom of the base is fixedly equipped with anti-slip pads.

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