Powder feeding device

Abstract

The utility model relates to a powder feeding device which comprises a stock bin, and a mechanical arch breaking mechanism is arranged on the lower middle portion of the stock bin and used for powder stirring and arch breaking. A threaded rod conveyor is arranged below the stock bin and provided with a linkage structure connected with the mechanical arch breaking mechanism. A driving structure is arranged outside the stock bin; one end of the threaded rod conveyor faces the discharge port, and the other end of the threaded rod conveyor is rotationally connected with the side wall of the stock bin and penetrates through the side wall of the stock bin to be connected with an external driving structure; the driving structure drives the threaded rod conveyer to operate, and the threaded rod conveyer drives the mechanical arch breaking mechanism to operate during operation; according to the utility model, the problem of high driving energy consumption is reduced, the rotary joint of the threaded rod conveyor and the side wall of the stock bin is provided with the double-end-face sealing bearing, the abrasion caused by collision between the threaded rod conveyor and the stock bin is reduced, the maintenance frequency of the device is reduced, and the service life of the device is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of industrial equipment, and more specifically to the technical field of powder dosing machines. Background Art

[0002] The working principle of the existing powder dosing machine: The required powder is loaded into the hopper, and the powder is broken by spiral drive and stirring. Under the action of gravity, the broken powder falls onto the screw rod transporter at the bottom, and the powder is transported out by the drive device provided on the screw rod transporter.

[0003] On the one hand, during the process of transporting the powder, since the screw rod transporter and the silo are sealed by packing, the long-term operation of the screw rod transporter will easily wear the connection between the screw transporter and the silo, resulting in a shortened service life; on the other hand, since the arch breaking device and the screw rod transportation device require two drive devices, a large amount of electricity will be consumed during use, resulting in an increase in cost.

[0004] In view of the above deficiencies, it is necessary to improve the existing powder dosing machine to overcome the above deficiencies. At the same time, it is also convenient to control, the structure is simplified, and the cost is reduced. Summary of the Utility Model

[0005] The purpose of the utility model is to solve the defects existing in the prior art, and to provide a powder dosing machine device that is easy to control, has a simplified structure, and reduces costs.

[0006] For the above purpose, the utility model adopts the following technical scheme:

[0007] A powder dosing device, comprising a silo, a mechanical arch breaking mechanism, a screw rod transporter, and a drive structure;

[0008] The silo is used to prepare the powder, is provided with a viewing port, the upper part of the silo is provided with a feed port communicating with itself, and the lower part of the silo is provided with a discharge port communicating with itself; the mechanical arch breaking mechanism is located in the middle and lower part of the silo and is used for stirring and breaking the arch of the powder; the screw rod transporter is located below the silo, and the screw rod transporter has a linkage structure connected to the mechanical arch breaking mechanism, and the screw rod transporter can transport the powder along the horizontal direction; the drive structure is arranged outside the silo; one end of the screw rod transporter faces the discharge port, and the other end is rotatably connected to the side wall of the silo, passes through the side wall of the silo and is connected to the external drive structure, and the drive structure drives the screw rod transporter to operate, and at the same time drives the mechanical arch breaking mechanism to stir and break the arch of the powder while the screw rod transporter is operating.

[0009] Further, the screw rod transporter includes a screw rod with thread protrusions spirally extending in the axial direction. One end of the screw rod faces the discharge port of the silo, and the other end is provided with a first bevel gear. The screw rod passes through one side of the silo and is connected to an external drive structure.

[0010] Further, a double-end face seal bearing is provided at the connection between the silo and the screw rod. The double-end face seal bearing includes a first bearing and a second bearing through which the screw rod passes. A number of corresponding connection holes are provided on the first bearing and the second bearing. The first bearing and the second bearing are fixed by bolts and nuts. Washers are sleeved on the bolts, and the washers are located between the first bearing and the second bearing. There is a certain gap between the first bearing and the second bearing, and the gap is filled with packing, and the packing is wound around the circumference of the screw rod.

[0011] Further, the mechanical arch-breaking mechanism includes a fixed shaft fixed to the silo. The fixed shaft is located above the screw rod. The axis of the fixed shaft in the axial direction is perpendicular to the axis of the screw rod in the axial direction. A turntable is sleeved on the center of the fixed shaft. Stirring rods parallel to the fixed shaft are provided on the front and rear surfaces of the turntable. The positions of the stirring rods are close to the fixed shaft. A number of driving rods are provided on the edge of the turntable in a circumferential manner. A U-shaped groove is provided at one end of the driving rod away from the turntable.

[0012] Further, the linkage structure includes the screw rod of the screw rod transporter with thread protrusions spirally extending in the axial direction, and the mechanical arch-breaking mechanism. The mechanical arch-breaking mechanism is provided with a turntable, and a number of driving rods are provided on the edge of the turntable in a circumferential manner. A U-shaped groove is provided at one end of the driving rod away from the turntable. When intermittent point-to-point contact is formed between the outside of the thread protrusion and the inside of the U-shaped groove, the turntable is pushed to rotate.

[0013] Further, the drive structure includes a servo motor provided with a second bevel gear. The second bevel gear meshes with the first bevel gear of the screw rod. When the second bevel gear of the servo motor rotates, the power drives the screw rod to rotate through meshing with the first bevel gear of the screw rod.

[0014] Compared with the prior art, the present utility model also has the following technical effects:

[0015] Under the action of gravity, the powder in the silo slides down and falls into the mechanical arch-breaking mechanism. The drive structure outside the silo drives the screw rod transporter to rotate. Through the linkage structure between the screw rod transporter and the mechanical arch-breaking mechanism, the mechanical arch-breaking mechanism operates to stir and break the arch of the powder. The stirred and arch-broken powder will then fall onto the screw rod transporter, and the powder is transported towards the discharge port through the screw rod transporter.

[0016] One end of the threaded rod transporter, which is provided with a first bevel gear, is connected to an external driving structure. The movement of the driving structure drives the rotation of the threaded rod on the threaded rod transporter. During the rotation of the threaded rod, the powder is driven by the thread protrusions on the threaded rod and conveyed towards the discharge port.

[0017] When the double-end face sealed bearing rotates the threaded rod, the packing in the gap between the first bearing and the second bearing, through the self-tightening force of the bearing, generates a certain pressing force between the packing and the threaded rod, reducing the vibration and yaw of the threaded rod during rotation, avoiding the wear caused by the collision between the threaded rod and the silo during rotation, reducing the maintenance frequency of the present utility model, and prolonging the service life of the present utility model.

[0018] When the mechanical arch-breaking mechanism rotates the threaded rod through the U-shaped groove on the driving rod at the edge of the turntable, when the inner side of the U-shaped groove forms intermittent point-to-point contact with the outer side of the thread protrusion on the threaded rod, it pushes the circumferential movement of the turntable, and the stirring rods parallel to the fixed shaft on the front and back of the turntable move accordingly, stirring and breaking the arch of the powder, reducing the problem of high driving energy consumption.

[0019] The servo motor drives the rotation of the threaded rod through the meshing of bevel gears with the threaded rod. When the threaded rod rotates, it can drive the rotation of the turntable of the mechanical arch-breaking mechanism for stirring and breaking the arch. The rotation speed of the threaded rod and the rotation speed of the turntable are matched, so that the powder is consistent during arch-breaking and transportation. Description of the Drawings

[0020] Figure 1 is the structural schematic diagram of the present utility model;

[0021] Figure 2 is Figure 1 the side view of A in Detailed Description of the Invention

[0022] The following is a further detailed description through specific embodiments:

[0023] The reference numerals in the drawings of the specification include: material viewing port 1, fixed shaft 2, turntable 3, stirring rod 4, driving rod 5, threaded rod 7, thread protrusion 8, bolt 11, nut 12, washer 13, packing 14, first bearing 15, second bearing 16.

[0024] Embodiment, such as Figure 1 and Figure 2As shown in the figure, this embodiment provides a powder feeding device, which includes a silo. An observation port 1 is provided on the side wall of the silo. An inlet communicating with itself is provided above the silo, and an outlet communicating with itself is provided below the silo. A driving structure is arranged outside the silo, and a mechanical arch-breaking mechanism is arranged in the middle and lower part of the silo. The mechanical arch-breaking mechanism includes a fixed shaft 2. A turntable 3 is sleeved on the fixed shaft 2. Stirring rods 4 parallel to the fixed shaft 2 are arranged on the front and back surfaces of the turntable 3. When the turntable 3 moves circumferentially, the stirring rods 4 stir and break the arch of the powder. A number of driving rods 5 are arranged on the edge of the turntable 3 in a circumferential manner. A U-shaped groove is arranged at one end of the driving rod 5 far from the turntable.

[0025] A screw rod transporter for horizontally transporting powder is arranged below the silo. The screw rod transporter includes a screw rod 7. Threaded protrusions 8 extending spirally in the axial direction are arranged on the screw rod 7. One end of the screw rod 7 leads to the outlet of the silo, and the other end is provided with a first bevel gear, which passes through the side wall of the silo and is connected to the external driving structure. The side wall of the silo is rotationally connected to the screw rod 7, and the screw rod transporter has a linkage structure connected to the mechanical arch-breaking mechanism. When the screw rod transporter operates, the linkage structure will drive the mechanical arch-breaking mechanism to move and break the arch of the powder by stirring.

[0026] The linkage structure in this embodiment includes the screw rod 7 of the screw rod transporter. One end of the screw rod 7 is connected to the external driving structure of the silo. Threaded protrusions 8 extending spirally in the axial direction are arranged on the screw rod 7, and the mechanical arch-breaking mechanism. The mechanical arch-breaking mechanism is provided with a turntable 3. A number of driving rods 5 are arranged on the edge of the turntable 3 in a circumferential manner. A U-shaped groove is arranged at one end of the driving rod 5 far from the turntable 3. When the inner side of the U-shaped groove and the outer side of the threaded protrusion 8 form intermittent point-to-point contact, the turntable is pushed to rotate.

[0027] Among them, the driving structure includes a servo motor. A second bevel gear is arranged on the servo motor. The second bevel gear meshes with the first bevel gear of the screw rod 7. When the second bevel gear of the servo motor rotates, the power drives the screw rod 7 to rotate through meshing with the first gear of the screw rod 7.

[0028] In this embodiment, the external servo motor drives the screw rod 7 to rotate through the meshing of the first bevel gear and the second bevel gear. When the screw rod 7 rotates, the outer side of the threaded protrusion 8 and the inner side of the U-shaped groove form intermittent point-to-point contact, pushing the turntable 3 to rotate circumferentially. The stirring rods 4 on the turntable 3 stir and break the arch of the powder in the silo. The powder after stirring and arch-breaking falls onto the screw rod 7, and the powder moves to the outlet as the screw rod 7 rotates. Since the operation of the mechanical arch-breaking structure is driven by the rotation of the screw rod 7, there is no need to provide an additional driving source separately, reducing the problem of excessive driving energy consumption.

[0029] In this embodiment, a double-end face sealing bearing is provided at the rotational connection between the threaded rod 7 and the side wall of the silo. The double-end face sealing bearing includes a first bearing 15 and a second bearing 16 through which the threaded rod passes, a bolt 11, a nut 12, a washer 13, and a packing 14.

[0030] In this embodiment, a number of corresponding connection holes are provided on the first bearing 15 and the second bearing 16. The first bearing 15 and the second bearing 16 are fixed to the outer side wall of the silo by the bolt 11 and the nut 12. A washer 13 is sleeved on the bolt 11, and the washer 13 is located between the first bearing 15 and the second bearing 16, so that there is a certain gap between the first bearing 15 and the second bearing 16. A packing 14 is provided in the gap. The packing 14 is wound around the circumferential side of the threaded rod 7. When the threaded rod 7 rotates, the packing 14 in the gap between the first bearing 15 and the second bearing 16 generates a certain pressing force between the packing 14 and the threaded rod 7 through the self-tightening force of the bearing, reducing the vibration and yaw of the threaded rod 7 during rotation, avoiding the wear caused by the collision between the threaded rod 7 and the side wall of the silo during rotation, reducing the maintenance frequency of the present utility model, and extending the service life of the present utility model.

[0031] The above are only embodiments of the present utility model. Specific technical solutions and / or common knowledge such as characteristics that are well known in the art are not described in detail here. It should be noted that for those skilled in the art, without departing from the technical solution of the present utility model, several deformations and improvements can still be made, and these should also be regarded as the protection scope of the present utility model, and these will not affect the implementation effect of the present utility model and the practicality of the patent. The protection scope required by this application should be subject to the content of its claims, and the specific implementation manners described in the specification can be used to interpret the content of the claims.

Claims

1. A powder dosing device, characterized in that: It includes a silo, a mechanical arch-breaking mechanism, a threaded rod conveyor, and a driving structure; the silo is used to prepare powder, and a feed port connected to the silo is provided above the silo, and a discharge port connected to the silo is provided below the silo; the mechanical arch-breaking mechanism is located in the middle and lower part of the silo, and is used for mixing and arch-breaking of powder; the threaded rod conveyor is located below the silo, and the threaded rod conveyor has a linkage structure connected to the mechanical arch-breaking mechanism, and the threaded rod conveyor can transport powder in the horizontal direction; The driving structure is arranged outside the silo; one end of the threaded rod conveyor faces the discharge port, and the other end is rotatably connected to the side wall of the silo, and passes through the side wall of the silo to be connected to the external driving structure. The driving structure drives the threaded rod conveyor to operate, and while the threaded rod conveyor is operating, it drives the mechanical arch breaking mechanism to stir and break the powder.

2. A powder dosing device according to claim 1, characterized in that: A material viewing port is arranged on the side wall of the silo.

3. A powder dosing device according to claim 1, characterized in that: The threaded rod conveyor includes a threaded rod having a threaded protrusion extending spirally in the axial direction. One end of the threaded rod faces the discharge port of the silo, and the other end is provided with a first bevel gear that passes through the side wall of the silo and is connected to an external driving structure.

4. A powder dosing device according to claim 3, characterized in that: The threaded rod is rotatably connected to the side wall of the silo by a double-end sealed bearing.

5. A powder dosing device according to claim 4, characterized in that: The double-end sealed bearing includes a first bearing and a second bearing for the threaded rod to pass through, and the first bearing and the second bearing are provided with a plurality of corresponding connecting holes, and the connecting holes fix the first bearing and the second bearing through bolts and nuts, and washers are sleeved on the bolts, and the washers are located between the first bearing and the second bearing. There is a certain gap between the first bearing and the second bearing, and the gap between the first bearing and the second bearing is filled with fillers, and the fillers are arranged around the circumference of the threaded rod.

6. A powder dosing device according to claim 1, characterized in that: The mechanical arch breaking mechanism includes a fixed shaft fixed to the silo, the fixed shaft is located above the threaded rod, the axis of the fixed shaft along the axial direction is perpendicular to the axis of the threaded rod along the axial direction, a turntable is sleeved at the center of the fixed shaft, and stirring rods parallel to the fixed shaft are arranged at the front and back of the turntable, the stirring rods are located close to the fixed shaft, and a plurality of driving rods are arranged in a circular manner on the edge of the turntable, and a U-shaped groove is arranged at the end of the driving rod away from the turntable.

7. A powder dosing device according to claim 1, characterized in that: The linkage structure includes a threaded rod arranged on a threaded rod transporter, the threaded rod having a threaded protrusion extending spirally in an axial direction, and a mechanical arch breaking mechanism, the mechanical arch breaking mechanism is provided with a turntable, a plurality of driving rods are provided in a circular manner on the edge of the turntable, a U-shaped groove is provided at one end of the driving rod away from the turntable, and intermittent point-to-point contact is formed between the outer side of the threaded protrusion and the inner side of the U-shaped groove to push the turntable to rotate.

8. A powder feeding device according to any one of claims 1 or 3, characterized in that: The driving structure includes a servo motor, and the servo motor is provided with a second bevel gear, which is meshed with the first bevel gear of the threaded rod. When the second gear of the servo motor rotates, the power drives the threaded rod to rotate by meshing with the teeth of the first gear of the threaded rod.

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