A device for uniformly discharging powdered materials

Abstract

The invention discloses a powder material uniform unloading device, comprising a feeding bin, a lower hopper, a unloading screen plate, a gearbox, an eccentric disk, a controller, a power supply, a traction rod and a driving motor. A lower hopper is correspondingly arranged below the feeding bin, a unloading screen plate is arranged between the lower hopper and the feeding bin, one end of the unloading screen plate is connected to the gearbox through the traction rod and the eccentric disk, and the gearbox is connected to the driving motor; the driving motor is connected to the controller through a wire, and the controller is connected to the power supply through a wire; the invention has a small size, a simple structure, and a low cost, can control the flow rate through the frequency of the change of the driving motor speed, can operate in the form of an assembly line, is adapted to the production requirements of modern mechanization, is simple to operate, has strong applicability, has a good homogenizing effect, greatly improves the work efficiency, is suitable for homogenizing most solid powder materials with strong sliding properties, and is particularly suitable for materials with large component fluctuations and difficult to control the uniformity of material components.

Description

Technical Field

[0001] The invention relates to the technical field of material unloading devices, and in particular to a uniform unloading device for powdered materials. Background Art

[0002] At present, in industrial production, if powdered or fine granular materials are placed in a container and allowed to flow downward automatically at a small flow rate, it is difficult to rely on its own weight to keep it flowing downward at a uniform speed, or to control the quality of the material discharged according to demand, thereby ensuring the actual production of the industry. It is easy to cause too much or too little material to be unloaded, which does not meet the use standards, thereby affecting work efficiency or industrial production progress; usually, a plug plate is provided at the outlet at the bottom of the container, and the outlet at the bottom of the container is manually controlled to be on and off, thereby controlling the quality of the material discharged according to demand. Although this method of manual operation is simple and reliable, it is still difficult to control the speed of the material flowing downward, and the labor intensity is large, the labor cost is high, and it cannot be operated in the form of an assembly line, and it is difficult to adapt to the production requirements of modern industrial mechanization.

[0003] Therefore, whether the design and improvement of the uniform unloading tool for powdery or granular objects is reasonable or not is related to whether the unloading work can proceed smoothly or not. Summary of the invention

[0004] The purpose of the present invention is to solve the above problems and to provide a powder material uniform unloading device which is small in size, novel in structure, movable in operation and highly efficient in use.

[0005] The technical solution to achieve the above-mentioned purpose is: a uniform unloading device for powdered materials, including a feeding bin, a lower hopper, a unloading screen plate, a gearbox, an eccentric disk, a controller, a power supply, a traction rod and a driving motor. A lower hopper is provided below the feeding bin, and a unloading screen plate is provided between the lower hopper and the feeding bin. One end of the unloading screen plate is connected to the gearbox through a traction rod and an eccentric disk, and the gearbox is connected to the driving motor, so as to obtain power to drive the unloading screen plate to reciprocate; the driving motor is connected to the controller through a wire, and the controller is connected to the power supply through a wire.

[0006] Furthermore, a discharge port is provided at the lower end of the feeding bin, and the discharge port is nested and connected to the feeding bin; screening bars are provided in the discharge port, which divide the inside of the discharge port into evenly distributed discharge channels; a supporting screen bar is provided at the upper end of the lower hopper, which divides the upper end of the lower hopper into evenly distributed feeding channels, the supporting screen bar and the screening bar are arranged opposite to each other, and the unloading screen plate is arranged between the supporting screen bar and the screening bar.

[0007] Furthermore, the unloading screen plate is provided with screen slots, which are evenly spaced on the unloading screen plate, and the number of the screen bars is the same as that of the screening bars, which are arranged in a mutually staggered manner; when the screen slots on the unloading screen plate are connected to the discharge channel, the bottom of the screen slots cooperates with the screen bars to form a receiving hopper, and then receives and obtains the materials in the feeding bin; when the driving motor drives the unloading screen plate to reciprocate through the gearbox, the eccentric plate and the traction rod, the screen slots on the unloading screen plate move from the discharge channel to the position where the screen bars overlap with the screening bars, and the upper end of the screen slots is connected to the bottom plane of the screening bars, and the lower end is connected to the upper plane of the screen bars, so that the discharge port of the feeding bin is closed and the unloading is stopped; when the screen slots move from the discharge channel to the position of the feeding channel, when their lower ends are connected to the feeding channel, the materials obtained in the receiving hopper are released along the feeding channel to the conveyor belt, and the reciprocating motion frequency of the unloading screen plate is controlled by controlling the rotation speed of the driving motor through the controller, so as to control the quality of the unloaded materials.

[0008] Furthermore, a connecting ear is provided at one end of the unloading screen plate, and the connecting ear is connected to the traction rod through a bolt shaft, and the connecting ear and the traction rod can rotate around the bolt shaft.

[0009] Furthermore, the screening bars and the screen-supporting bars are both in the shape of triangular prisms.

[0010] Furthermore, the screening bar has one corner of its rib set upward, and the rib plane corresponding to the corner of the rib is horizontally downward; the supporting screen bar has one corner of its rib set downward, and the plane corresponding to the rib is horizontally upward, corresponding to the horizontally downward plane of the screening bar.

[0011] Furthermore, the width of the screening bar is the same as that of the supporting screen bar, and the width of the screen slot and the interval width on the unloading screen plate are respectively one-third of the width of the supporting screen bar or the screening bar. When the lower part of the screen slot is located at two-thirds of the middle position of the supporting screen bar, the material is obtained from the discharge channel between the two screening bars; when the lower part of the screen slot is located at one-third of the left and right ends of the supporting screen bar, its upper part is opposite to two-thirds of the middle position of the screening bar. At this time, the screen slot is in an upper and lower closed state, and the unloading of materials is stopped; when the lower part of the screen slot is located in the middle position of the two supporting screen bars, the material in the screen slot is unloaded.

[0012] Furthermore, support pulleys are respectively provided in the gaps between the screen-bearing bars and the screening bars.

[0013] Furthermore, the support wheels arranged on the screen-bearing bars and the screening bars lift the unloading screen plate evenly and place it in the middle position, so as to maintain a balanced state during reciprocating motion and improve efficiency.

[0014] Furthermore, the unloading screen plate is also provided with a support wheel track to facilitate the movement of the support wheels.

[0015] The present invention has the advantages of small size, simple structure and low cost. The flow rate can be controlled by changing the frequency of the rotation speed of the driving motor. The operation can be carried out in the form of an assembly line, and it is adapted to the production requirements of modern mechanization. The operation is simple, the applicability is strong, the homogenization effect is good, and the work efficiency is greatly improved. The present invention is suitable for homogenizing most solid powder materials with strong sliding properties, and is particularly suitable for materials with large component fluctuations and the uniformity of the material components is difficult to control. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0017] Figure 2 It is a schematic diagram of the partial cross-sectional structure of the present invention in use state.

[0018] Figure 3 It is a partial structural schematic diagram of the installation position of the support wheel of the present invention.

[0019] Figure 4 It is a schematic diagram of a partially enlarged structure of the present invention.

[0020] Figure 5 This is a schematic diagram of the structure of the unloading screen plate of the present invention when acquiring materials.

[0021] Figure 6 It is a schematic structural diagram of the unloading screen plate of the present invention when the material is unloaded from the closed screen slot.

[0022] Figure 7 It is a schematic diagram of the structure of the unloading screen plate of the present invention when unloading materials.

[0023] In the figure: 1. lower hopper 101. supporting screen bar 102. feeding channel 2. discharge port 201. screening bar 3. discharge screen plate 301. screen slot 302. connecting ear 303. support wheel track 4. gearbox 5. eccentric disk 6. controller 7. power supply 8. traction rod 9. driving motor 10. feeding bin 11. conveyor belt 12. support wheel. DETAILED DESCRIPTION

[0024] To facilitate understanding by those skilled in the art, the embodiments of the present invention are further described below with reference to the accompanying drawings.

[0025] As attached Figure 1-7The device for uniformly discharging powdered materials shown in the figure comprises a feeding bin 10, a lower hopper 1, a discharging screen plate 3, a gearbox 4, an eccentric disk 5, a controller 6, a power supply 7, a traction rod 8 and a driving motor 9. A discharge port 2 is provided at the lower end of the feeding bin 10, and the discharge port 2 is nested and connected with the feeding bin 10. Screening strips 201 are provided in the discharge port 2 to divide the inside of the discharge port 2 into uniformly distributed discharge channels 202; a lower hopper 1 is provided below the feeding bin 10, and a supporting screen strip 101 is provided at the upper end of the lower hopper 1, and the supporting screen strip 101 divides the upper end of the lower hopper 1 into uniformly distributed feeding channels 102, the supporting screen bar 101 and the screening bar 201 are arranged opposite to each other; a discharge screen plate 3 is arranged between the lower hopper 1 and the feeding bin 10, and the discharge screen plate 3 is arranged between the supporting screen bar 101 and the screening bar 201; a connecting ear 302 is arranged at one end of the discharge screen plate 3, and the connecting ear 302 is connected to the traction rod 8 through a bolt shaft, and the connecting ear 302 and the traction rod 8 can rotate around the bolt shaft; the connecting ear 302 at one end of the discharge screen plate 3 is connected to the gearbox 4 through the traction rod 8 and the eccentric disk 5, and the gearbox 4 is connected to the driving motor 9, so as to obtain power to drive the discharge screen plate 3 to reciprocate;

[0026] The driving motor 9 is connected to the controller 6 through a wire, and the controller 6 is connected to the power supply 7 through a wire; the unloading screen plate 3 is provided with a screen slot 301, and the screen slots 301 are evenly spaced on the unloading screen plate 3, and the number of the screen bars 101 and the screen bars 201 is the same, and they are mutually staggered. When the screen slots 301 on the unloading screen plate 3 are connected to the discharge channel 202, the bottom of the screen slot 301 cooperates with the screen bars 101 to form a receiving hopper, and then receives the material in the feeding bin 10, such as Figure 5 When the driving motor 9 drives the unloading screen plate 3 to reciprocate through the gearbox 4, the eccentric disk 5 and the traction rod 8, the screen slot 301 on the unloading screen plate 3 moves from the discharge channel 202 to the position where the screen bar 101 and the screen bar 201 overlap and dock, the upper end of the screen slot 301 docks with the bottom plane of the screen bar 201, and the lower end docks with the upper plane of the screen bar 101, closing the discharge port 2 of the feeding bin 10 and stopping the unloading. Figure 6 When the sieve slot 301 moves from the discharge channel 202 to the feed channel 102, its lower end is connected to the feed channel 102, and the material obtained in the hopper is unloaded along the feed channel 102. Figure 7 The controller 6 controls the rotation speed of the driving motor 9 to control the reciprocating motion frequency of the discharge screen plate 3, thereby controlling the quality of the discharged material.

[0027] Preferably, the screening bar 201 and the supporting screen bar 101 are both in the shape of a triangular prism; the screening bar 201 has one corner of its ribs set upward, and the rib plane corresponding to the corner of the ribs is horizontally downward; the supporting screen bar 101 has one corner of its ribs set downward, and the plane corresponding to the ribs is horizontally upward, corresponding to the plane of the screening bar 201 that is horizontally downward; the screening bar 201 has the same width as the supporting screen bar 101, and the width and interval width of the screening slots 301 on the discharge screen plate 3 are respectively one-third of the width of the supporting screen bar 101 or the screening bar 201 When the lower part of the screen slot 301 is located at two-thirds of the middle position of the screen bar 101, the material is obtained from the discharge channel 202 between the two screen bars 201; when the lower part of the screen slot 301 is located at one-third of the left and right ends of the screen bar 101, its upper part is opposite to two-thirds of the middle position of the screen bar 201. At this time, the screen slot 301 is in an upper and lower closed state, and the unloading of materials is stopped; when the lower part of the screen slot 301 is located in the middle position of the two screen bars 101, the material in the screen slot 301 is unloaded.

[0028] Preferably, in another embodiment, a supporting pulley 12 is provided between the gaps between the screen bars 101 and the screening bars 201. Figure 3 , Figure 4 The support wheel 12 provided on the screen bar 101 and the screening bar 201 will lift the discharge screen plate 3 evenly and hold it in the middle position, such as Figure 3 , which is convenient for maintaining a balanced state during reciprocating motion and improving efficiency; a support wheel track 303 is also provided on the unloading screen plate 3, such as Figure 1 , which is convenient for the support wheel 12 to walk.

[0029] In another embodiment, protective edges are respectively provided on both sides of the upper end of the lower hopper 1, and the protective edges restrict the discharge screen plate 3 to perform reciprocating motion at the upper end of the lower hopper 1.

[0030] When using, if attached Figure 2 , the staff first connects the circuit through the power supply 7, and then sets the working frequency of the drive motor 9 through the controller 6, thereby controlling the frequency of the reciprocating motion of the unloading screen plate 3; when the material is loaded into the feeding bin 10, the staff operates the controller 6 to drive the drive motor 9 to operate according to the demand, and the drive motor 9 drives the eccentric disk 5 to rotate through the gearbox 4. The eccentric disk 5 drives the traction rod 8 to pull the unloading screen plate 3 to reciprocate and then perform the unloading work. When the lower part of one group of screen slots 301 on the unloading screen plate 3 is located at two-thirds of the middle position of the supporting screen bar 101, the screen slot 301 obtains the material from the discharge channel 202 between the two screening bars 201, such as Figure 5 Then, when the traction rod 8 pulls the unloading screen plate 3 to reciprocate so that the lower part of the screen slot 301 is located at one-third of the left and right ends of the screen bar 101, its upper part is facing two-thirds of the middle position of the screen bar 201. At this time, the screen slot 301 is in a closed state up and down, such as Figure 6, stop unloading the material; when the lower portion of the screen slot 301 reciprocates to the middle position of the two bearing screen bars 101, the material in the screen slot 301 is unloaded along the feed channel 102, such as Figure 7 Thus, the material in the feeding bin 10 flows into the lower hopper 1 under the condition of the stable reciprocating motion of the unloading screen plate 3, and converges on the conveyor belt 11 along the lower part of the lower hopper 1 for stable transportation.

[0031] The above are only preferred embodiments of the present invention, and the scope of implementation of the present invention cannot be limited thereto; any simple equivalent changes and modifications made according to the scope of the patent application of the present invention and the content of the creation specification should still fall within the scope covered by the patent of the present invention.

Claims

1. A powder material uniform discharging device, comprising a feeding bin (10), a lower hopper (1), a discharging screen plate (3), a gearbox (4), an eccentric disc (5), a controller (6), a power source (7), a traction rod (8) and a driving motor (9), characterized in that: A lower hopper (1) is provided below the feeding bin (10), and a discharge screen plate (3) is provided between the lower hopper (1) and the feeding bin (10). One end of the discharge screen plate (3) is connected to a gearbox (4) via a traction rod (8) and an eccentric disk (5), and the gearbox (4) is connected to a drive motor (9), thereby obtaining power to drive the discharge screen plate (3) to perform reciprocating motion; the drive motor (9) is connected to a controller (6) via a wire, and the controller (6) is connected to a power source (7) via a wire; The lower end of the feeding bin (10) is provided with a discharge port (2), and the discharge port (2) is nested and connected with the feeding bin (10); the discharge port (2) is provided with a screening bar (201) to divide the inside of the discharge port (2) into evenly distributed discharge channels (202); the upper end of the lower hopper (1) is provided with a screen bar (101), and the screen bar (101) divides the upper end of the lower hopper (1) into evenly distributed feed channels (102), and the screen bar (101) and the screening bar (201) are connected to each other. 1) The two are arranged opposite to each other, the discharge screen plate (3) is arranged between the screen supporting bars (101) and the screening bars (201); the discharge screen plate (3) is provided with screen slots (301), the screen slots (301) are evenly spaced on the discharge screen plate (3), the screen supporting bars (101) and the screening bars (201) are the same in number, and are arranged in a mutually staggered manner; when the screen slots (301) on the discharge screen plate (3) are butted against the discharge channel (202), the bottom of the screen slots (301) and the screen supporting bars (101) are in contact with each other. 01) cooperate to form a receiving hopper, thereby receiving and obtaining materials in the feeding bin (10); when the driving motor (9) drives the discharge screen plate (3) to perform reciprocating motion through the gearbox (4), the eccentric disk (5) and the traction rod (8), the screen slot (301) on the discharge screen plate (3) moves from the discharge channel (202) to the position where the receiving screen bar (101) and the screening bar (201) overlap and dock, the upper end of the screen slot (301) docks with the bottom plane of the screening bar (201), and the lower end docks with the receiving screen bar (101). 1), the discharge port (2) of the feeding bin (10) is closed, and material discharge is stopped; when the sieve slot (301) moves from the discharge channel (202) to the feed channel (102), its lower end is in contact with the feed channel (102), and the material obtained in the hopper is released along the feed channel (102) onto the conveyor belt (11), and the controller (6) controls the rotation speed of the drive motor (9) to control the reciprocating frequency of the discharge sieve plate (3), thereby controlling the quality of the discharged material; A connecting ear (302) is provided at one end of the discharging screen plate (3), and the connecting ear (302) is connected to the traction rod (8) through a bolt shaft, and the connecting ear (302) and the traction rod (8) can rotate around the bolt shaft; The screening bars (201) and the screen-supporting bars (101) are both in the shape of triangular prisms.

2. A powder material uniform discharging device according to claim 1, characterized in that: The screening bar (201) has one corner of its rib arranged upwards, and the rib plane corresponding to the corner of the rib is horizontally downwards; the screening bar (101) has one corner of its rib arranged downwards, and the plane corresponding to the rib is horizontally upwards, corresponding to the plane of the screening bar (201) that is horizontally downwards.

3. A powder material uniform discharging device according to claim 2, characterized in that: The sieving bar (201) has the same width as the supporting sieving bar (101); the width and spacing width of the sieving slot (301) on the discharge sieving plate (3) are respectively one-third of the width of the supporting sieving bar (101) or the sieving bar (201); when the lower portion of the sieving slot (301) is located at two-thirds of the middle position of the supporting sieving bar (101), the material is obtained from the discharge channel (202) between the two sieving bars (201); when the lower portion of the sieving slot (301) is located at one-third of the left and right ends of the supporting sieving bar (101), its upper portion is opposite to two-thirds of the middle position of the sieving bar (201), at this time, the sieving slot (301) is in a closed state at the top and bottom, and the unloading of the material is stopped; when the lower portion of the sieving slot (301) is located at the middle position of the two supporting sieving bars (101), the material in the sieving slot (301) is unloaded.

4. A powder material uniform discharging device according to claim 2 or 3, characterized in that: Support wheels (12) are respectively provided in the spaces between the screen-bearing bars (101) and the screening bars (201).

5. A powder material uniform discharging device according to claim 4, characterized in that: The support wheels (12) provided on the screen-bearing bars (101) and the screening bars (201) evenly lift the discharge screen plate (3) to a middle position, thereby facilitating the maintenance of a balanced state during reciprocating motion and improving efficiency.

6. A powder material uniform discharging device according to claim 3, characterized in that: The unloading screen plate (3) is also provided with a support wheel track (303) to facilitate the movement of the support wheel (12).

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