Weighing device of screw feeder

Abstract

The utility model discloses a screw feeder weighing device, which relates to the field of feeding processing, and comprises a bottom plate and a screw extruder fixedly arranged on the bottom plate, the upper end of the screw extruder is provided with a feed hopper used for storing materials, the inner side of the feed hopper is movably provided with two first baffle plates used for blocking the materials, and the first baffle plates are arranged on the bottom plate. Two second baffle plates are movably arranged on the inner side of the feeding hopper, two guide grooves are formed in the inner wall of the feeding hopper, all materials are blocked through the first baffle plates, all the materials can be loaded into the feeding hopper till the feeding hopper is filled with the materials, the feeding frequency is reduced, the first baffle plates can rotate, the feeding hopper is not prone to falling off, and the feeding hopper is convenient to use. A small amount of materials are released for multiple times, a small part of the materials enter the second blocking plate, the small amount of the materials are released for multiple times through the discharging motor, and the materials are prevented from being blocked in the screw extruder.

Description

Technical Field

[0001] The utility model relates to the field of feeding processing, in particular to a weighing device for a spiral feeder. Background Art

[0002] The weighing device of the screw feeder generally uses a screw rod to transport powdered, granular and small block materials. During the transportation process, the material needs to be weighed and set. The force sensor feeds the signal back to the PLC from time to time, converts it into weight, and finally calculates the weight of the material by accumulating the value of the stroke.

[0003] When the screw feeder is in use, the material is generally stored in the feed hopper connected to its upper end. All the materials are added into the feed hopper. Because it is transported by friction, it will cause blockage and inaccurate measurement during the transportation process. As a result, the material needs to be added into the feed hopper multiple times, resulting in a high frequency of adding materials, which is time-consuming and labor-intensive.

[0004] Therefore, it is necessary to propose a screw feeder weighing device to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a weighing device for a screw feeder to solve the problem of high frequency of adding materials.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a screw feeder weighing device, comprising a bottom plate and a screw extruder fixedly arranged on the bottom plate, a feed hopper for storing materials is arranged at the upper end of the screw extruder, two first baffles for blocking materials are movably arranged inside the feed hopper, and two second baffles are movably arranged inside the feed hopper;

[0007] The inner wall of the feed hopper is provided with two guide grooves, the inner sides of the guide grooves are slidably provided with center rods, the two second baffles are rotatably connected by corresponding center rods, the two first baffles are rotatably connected by corresponding center rods, and the lower ends of the second baffles and the first baffles are both against the inner wall of the feed hopper;

[0008] A feed nozzle is fixedly arranged on the outer side of the screw extruder, the feed nozzle and the feed hopper are connected, and the feed hopper is arranged in an inverted trapezoidal shape.

[0009] Preferably, two rotating shafts are movably provided on the inner side of the feed hopper, two cams are fixedly provided on the outer side of the rotating shaft, two discharge motors are fixedly provided on one end of the feed hopper, the output end of the discharge motor is fixedly connected to the corresponding end of the rotating shaft, and the outer sides of the two cams abut against the corresponding second baffle and the lower end of the first baffle.

[0010] Preferably, a plurality of weight detectors are fixedly provided at the lower end of the second baffle.

[0011] Preferably, two support rods are fixedly provided on the upper end of the bottom plate, and the ends of the support rods are fixedly connected to the outer side of the feed hopper.

[0012] Preferably, the rotating shaft and the central rod are in the same vertical plane.

[0013] Preferably, a feeding motor for driving the screw extruder is fixedly provided on the upper end of the bottom plate.

[0014] Technical effects and advantages of the utility model:

[0015] 1. All materials can be blocked by the first baffle, and all materials can be loaded into the feed hopper until the feed hopper is full of materials, reducing the feeding frequency, and the first baffle can rotate to release materials in small quantities and multiple times, so that a small part of the materials enter the second baffle, and the material is released in small quantities and multiple times by the discharge motor to prevent the materials from being blocked in the screw extruder;

[0016] 2. Through the weight detector, when the material on the upper end of the second baffle reaches a certain threshold, the second baffle is lifted up through the setting of the cam, so that the material moves from the second baffle and is released from the gap between the second baffle and the feed hopper. The material entering the screw extruder can be weighed, and the material released from the first baffle will be preferentially accumulated at the edge of the second baffle, so that when the second baffle rotates, the falling speed of the material can be increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The utility model is a schematic diagram of the structure of the weighing device of the spiral feeder.

[0018] Figure 2 This is a schematic diagram of the structure of the feed hopper of the utility model.

[0019] Figure 3 It is a schematic diagram of the internal structure of the feed hopper of the utility model.

[0020] Figure 4 It is a schematic diagram of the structure of the first baffle and the second baffle of the utility model.

[0021] Figure 5 This is a schematic diagram of the cam structure of the utility model.

[0022] In the figure: 1. bottom plate; 2. screw extruder; 3. feed nozzle; 4. feed hopper; 5. first baffle; 6. center rod; 7. guide groove; 8. second baffle; 9. weight detector; 10. discharge motor; 11. rotating shaft; 12. cam; 13. support rod; 14. feeding motor. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] The utility model provides Figure 1 - Figure 5 The screw feeder weighing device shown includes a base plate 1 and a screw extruder 2 fixedly arranged on the base plate 1, wherein the screw extruder 2 is composed of an outer shell and a screw rod inside the outer shell, wherein a weighing sensor is provided at the end of the screw rod, wherein the weighing sensor is not shown in the figure and is a prior art, and is used to estimate the weight of the extruded material when the screw rod is working.

[0025] A feed hopper 4 for storing materials is provided at the upper end of the screw extruder 2. The feed hopper 4 is arranged in an inverted trapezoidal shape. Two first baffles 5 for blocking materials are movably provided inside the feed hopper 4. Two second baffles 8 are movably provided inside the feed hopper 4. The second baffles 8 are used to release the materials released by the first baffles 5.

[0026] The first baffle 5 blocks all materials and can load all materials into the feed hopper 4 until the feed hopper 4 is full of materials, thereby reducing the feeding frequency. The first baffle 5 can rotate to release materials in small quantities and multiple times, so that a small portion of the materials enters the second baffle 8, and the material discharge motor 10 releases materials in small quantities and multiple times, thereby preventing the materials from being blocked in the screw extruder 2.

[0027] Two guide grooves 7 are provided on the inner wall of the feed hopper 4, and a center rod 6 is slidably provided inside the guide grooves 7, so that the center rod 6 can slide up and down inside the guide grooves 7, and the two second baffles 8 are rotatably connected by the corresponding center rods 6, and the two first baffles 5 are rotatably connected by the corresponding center rods 6, and the lower ends of the second baffles 8 and the first baffles 5 are both against the inner wall of the feed hopper 4. Through the setting of the shape of the feed hopper 4, the second baffles 8 and the first baffles 5 can be clamped on the inner wall of the feed hopper 4 to block the material;

[0028] A feed nozzle 3 is fixedly provided on the outer side of the screw extruder 2 , and the feed nozzle 3 and the feed hopper 4 are connected.

[0029] Two rotating shafts 11 are movably provided on the inside of the feed hopper 4, and two cams 12 are fixedly provided on the outside of the rotating shafts 11. Two discharging motors 10 are fixedly provided at one end of the feed hopper 4. The output ends of the discharging motors 10 are fixedly connected to the corresponding ends of the rotating shafts 11. The outer sides of the two cams 12 abut against the corresponding second baffle 8 and the lower ends of the first baffle 5. When the convex top of the cam 12 contacts the second baffle 8, the second baffle 8 will be lifted up to create a gap between it and the feed hopper 4 for the material to fall and enter the screw extruder 2.

[0030] A plurality of weight detectors 9 are fixedly provided at the lower end of the second baffle 8, and two discharge motors 10 and the weight detector 9 are connected and controlled by a signal line, wherein the weight detector 9 controls whether the two discharge motors 10 are working through the processor, and when the material at the upper end of the second baffle 8 reaches a certain threshold through the weight detector 9, the second baffle 8 is lifted up through the setting of the cam 12, so that the material moves from the second baffle 8 and is discharged from the gap between the second baffle 8 and the feed hopper 4, so that the material entering the screw extruder 2 can be weighed, and the material released from the first baffle 5 will be preferentially accumulated at the edge of the second baffle 8, so that when the second baffle 8 rotates, the falling speed of the material can be increased.

[0031] Two support rods 13 are fixedly provided at the upper end of the bottom plate 1 , and the ends of the support rods 13 are fixedly connected to the outside of the feed hopper 4 for supporting the feed hopper 4 .

[0032] The rotating shaft 11 and the center rod 6 are in the same vertical plane, ensuring that the rotating shaft 11 drives the cam 12 to be directly below the center rod 6 .

[0033] A feeding motor 14 for driving the screw extruder 2 is fixedly disposed on the upper end of the bottom plate 1. The feeding motor 14 is a servo motor, which is a prior art and will not be described in detail here.

[0034] Working principle: The operator puts the material to be transported into the feed hopper 4, and then turns on the feeding motor 14, so that the feeding motor 14 drives the screw rod in the screw extruder 2 to rotate, and then turns on the discharge motor 10 and the weight detector 9. The weight detector 9 detects that there is no weight on the second baffle 8, and then controls the corresponding discharge motor 10 to work, so that the discharge motor 10 drives the rotating shaft 11 to rotate, and then the rotating shaft 11 drives the cam 12 to rotate, so that the convex top of the cam 12 gradually contacts the first baffle 5, so that the first baffle 5 is lifted by the cam 12, and then slides in the guide groove 7 through the center rod 6, so that the first baffle 5 is gradually merged and set, and the material enters the second baffle 8;

[0035] When the material on the second baffle 8 reaches the required threshold, the weight detector 9 controls the corresponding discharge motor 10 to work, thereby resetting the cam 12 and closing the first baffle 5. The weight of the material on the first baffle 5 is used to press the first baffle 5 down to reset the material and intercept the material.

[0036] The weight detector 9 then controls another discharge motor 10, causing the second baffle 8 to rotate, thereby allowing the weighed material to enter the screw extruder 2 through the feed nozzle 3 to complete the weighing and transportation of the material. The cam 12 is reset, thereby causing the two second baffles 8 to reset by their own gravity. After the second baffles 8 are reset, the first baffle 5 is relatively opened, and the material is weighed and released here, and the material is transported through the screw extruder 2.

Claims

1. A screw feeder weighing device, comprising a base plate (1) and a screw extruder (2) fixedly arranged on the base plate (1), characterized in that: The upper end of the screw extruder (2) is provided with a feed hopper (4) for storing materials, the inner side of the feed hopper (4) is provided with two first baffles (5) for blocking materials, and the inner side of the feed hopper (4) is provided with two second baffles (8); The inner wall of the feed hopper (4) is provided with two guide grooves (7), the inner sides of the guide grooves (7) are slidably provided with center rods (6), the two second baffles (8) are rotatably connected through the corresponding center rods (6), the two first baffles (5) are rotatably connected through the corresponding center rods (6), and the lower ends of the second baffles (8) and the first baffles (5) are both in contact with the inner wall of the feed hopper (4); A feed nozzle (3) is fixedly provided on the outside of the screw extruder (2); the feed nozzle (3) and the feed hopper (4) are connected to each other; and the feed hopper (4) is arranged in an inverted trapezoidal shape.

2. The screw feeder weighing device according to claim 1, characterized in that: Two rotating shafts (11) are movably provided inside the feed hopper (4), two cams (12) are fixedly provided outside the rotating shafts (11), two discharge motors (10) are fixedly provided at one end of the feed hopper (4), the output end of the discharge motor (10) is fixedly connected to one end of the corresponding rotating shaft (11), and the outer sides of the two cams (12) abut against the corresponding second baffle (8) and the lower end of the first baffle (5).

3. The screw feeder weighing device according to claim 1, characterized in that: A plurality of weight detectors (9) are fixedly provided at the lower end of the second baffle (8).

4. The screw feeder weighing device according to claim 1, characterized in that: Two support rods (13) are fixedly provided on the upper end of the bottom plate (1), and the ends of the support rods (13) are fixedly connected to the outside of the feed hopper (4).

5. The screw feeder weighing device according to claim 2, characterized in that: The rotating shaft (11) and the central rod (6) are located in the same vertical plane.

6. The screw feeder weighing device according to claim 1, characterized in that: A feeding motor (14) for driving the screw extruder (2) to work is fixedly provided on the upper end of the bottom plate (1).

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