Quantitative pneumatic conveying device for powder materials

Abstract

The utility model provides a powder material quantitative pneumatic conveying device which comprises a material storage box, a gas conveying pipeline, a fan and a discharging channel, the fan is arranged at the head end of the gas conveying pipeline, and the bottom of the material storage box is communicated with the gas conveying pipeline through the discharging channel. The material fixing mechanism comprises a support, a driver, a lower supporting plate, an upper supporting plate, a polished rod and an adjusting assembly, the driver is used for driving the support to ascend and descend, the polished rod is fixed to the bottom of the support, the lower supporting plate is arranged at the bottom of the polished rod, the polished rod is sleeved with the upper supporting plate, and the adjusting assembly is arranged on the support and used for adjusting the height of the upper supporting plate. By driving the lower supporting plate and the upper supporting plate to circularly move up and down, materials in the containing cavity between the lower supporting plate and the upper supporting plate can be quantitatively and intermittently input into the gas conveying pipeline, the input amount of each time is the same and controllable, the materials are conveyed uniformly, the discharge amount of the materials is relatively stable, and fluctuation of the conveying amount of the materials is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to powder material pneumatic conveying technical field, concretely to a kind of powder material quantitative pneumatic conveying device. BACKGROUND

[0002] Pneumatic conveying, also known as airflow conveying, utilizes the energy of airflow to convey particulate materials in a closed pipeline along the airflow direction, which is a specific application of fluidization technology. The structure of the pneumatic conveying device is simple, and it is easy to operate. It can be used for horizontal, vertical or inclined conveying, and is widely used in powder transportation.

[0003] The existing pneumatic conveying device cannot well control the amount of material entering the conveying air pipe when conveying material, resulting in uneven material conveying, and unstable material discharge during pneumatic conveying, which is less applicable. UTILITY MODEL CONTENT

[0004] (I) Technical problem solved

[0005] In view of the deficiencies of the prior art, the utility model provides a powder material quantitative pneumatic conveying device to solve the problems raised in the above background art.

[0006] (II) Technical solution

[0007] To achieve the above purpose, the utility model is implemented by the following technical scheme: a powder material quantitative pneumatic conveying device, comprising a storage tank, a gas pipeline, a fan, a discharging channel, the fan is arranged at the first end of the gas pipeline, the bottom of the storage tank is communicated with the gas pipeline through the discharging channel, a material setting mechanism is arranged in the storage tank, the material setting mechanism comprises a bracket, a drive, a lower supporting plate, an upper supporting plate, a polished rod and an adjusting assembly, the drive is used to drive the bracket to lift, the polished rod is fixed at the bottom of the bracket, the lower supporting plate is arranged at the bottom of the polished rod, the upper supporting plate is sleeved on the polished rod, the adjusting assembly is arranged on the bracket and is used to adjust the height of the upper supporting plate.

[0008] Preferably, the outer contour of the lower supporting plate and the upper supporting plate is vertically matched with the shape of the discharging channel, which can be circular, and the lower supporting plate, the upper supporting plate and the discharging channel are vertically piston type slidingly matched.

[0009] Preferably, a sealing ring is arranged on the outer ring of the lower supporting plate and the upper supporting plate to contact the inner wall of the discharging channel.

[0010] Preferably, the adjusting assembly comprises a lead screw, a nut, a connecting rod and a lifting motor, the lead screw is vertically pivoted in the bracket, the lifting motor is arranged on the bracket and is coaxially connected with the lead screw, the nut is threadedly sleeved outside the lead screw, and the nut is connected with the upper supporting plate through the connecting rod.

[0011] Preferably, the bottom of the storage tank cavity is provided with a material pushing assembly for pushing the material to the center.

[0012] Preferably, the material pushing assembly comprises four groups of scrapers and a driving motor, one end of the scraper is pivotally connected to the bottom of the storage tank cavity, the four scrapers are distributed at equal angles around the center of the discharging channel, and the driving motor is arranged at the bottom of the storage tank and connected with the rotating shaft of the scraper.

[0013] Preferably, the top of the storage tank is provided with a feeding port.

[0014] (Three) beneficial effects

[0015] The utility model provides a kind of powder material ration pneumatic conveying device.It has the following beneficial effects:

[0016] 1, the powder material ration pneumatic conveying device, by electric push rod drives lower backplate and upper backplate to move cyclically up and down, material in the cavity between lower backplate and upper backplate can be intermittently input into gas pipeline, the same input amount is controlled each time, material conveying is uniform, the discharge capacity of material is relatively stable, and material conveying fluctuation is avoided.

[0017] 2, the powder material ration pneumatic conveying device, by setting adjusting assembly, the spacing between upper backplate and lower backplate can be adjusted, and the size of cavity can be adjusted according to the power of conveying material. DRAWINGS

[0018] Figure 1 It is the external axis drawing of the utility model;

[0019] Figure 2 It is the storage tank and gas pipeline half sectional view of the utility model;

[0020] Figure 3 It is the adjusting assembly structure schematic view of the utility model.

[0021] In the drawing: 1 storage tank, 2 gas pipeline, 3 fan, 4 discharging channel, 5 adjusting assembly, 6 lower backplate, 7 upper backplate, 8 light pole, 9 support, 10 electric push rod, 11 scraper, 12 driving motor, 13 feeding port, 51 lead screw, 52 nut, 53 connecting rod, 54 lifting motor. DETAILED DESCRIPTION

[0022] The utility model embodiment provides a kind of powder material ration pneumatic conveying device, as shown in Figures 1-3 Figure, including storage tank 1, gas pipeline 2, fan 3, discharging channel 4, fan 3 is arranged at the first end of gas pipeline 2, and fan 3 is used to provide power for gas pipeline 2, and the other end of gas pipeline 2 is connected to material receiving terminal.

[0023] The bottom of the storage bin 1 is connected to the air supply pipe 2 through the discharge channel 4, which is arranged vertically.

[0024] The top of the storage tank 1 is provided with a feeding port 13. Materials are added into the storage tank 1 through the feeding port 13.

[0025] like Figure 2 As shown, a material-fixing mechanism is provided inside the storage bin 1. The material-fixing mechanism includes a bracket 9, a driver, a lower support plate 6, an upper support plate 7, a guide rod 8, and an adjustment assembly 5. The driver is used to drive the bracket 9 to rise and fall, and the driver is an electric push rod 10. The guide rod 8 is fixed to the bottom of the bracket 9, the lower support plate 6 is set at the bottom of the guide rod 8, and the upper support plate 7 is sleeved on the guide rod 8. The distance between the lower support plate 6 and the upper support plate 7 is less than the length of the material discharge channel 4.

[0026] The outer contours of the lower support plate 6 and the upper support plate 7 are both shaped to match the vertical shape of the feeding channel 4, and can be circular. The lower support plate 6 and the upper support plate 7 are vertically piston-like slidingly adapted to the feeding channel 4. A sealing ring is provided on the outer ring of the lower support plate 6 and the upper support plate 7 to contact the inner wall of the feeding channel 4.

[0027] A material-holding cavity is formed between the upper pallet 7 and the lower pallet 6. State 1: The lower pallet 6 is located at the inlet of the discharge channel 4, and the material gathers in the cavity between the upper pallet 7 and the lower pallet 6. State 2: The lower pallet 6 enters the depth of the discharge channel 4, and the upper pallet 6 is near the inlet of the discharge channel 4, with a gap between the upper pallet 6 and the inlet of the discharge channel 4 for material to enter. State 3: After the cavity is full of material, the pallets continue to be pushed downwards until the lower pallet 6 extends beyond the bottom of the discharge channel 4, at which point the material in the cavity can be fed into the gas delivery pipe 2.

[0028] In order to enable the adjustable quantity of material for each measurement, the adjustment component 5 is set on the bracket 9 and is used to adjust the height of the upper tray 7.

[0029] like Figure 3 As shown, the adjusting assembly 5 includes a lead screw 51, a nut 52, a connecting rod 53, and a lifting motor 54. The lead screw 51 is vertically pivotally connected to the bracket 9. The lifting motor 54 is mounted on the bracket 9 and coaxially connected to the lead screw 51. The nut 52 is threaded onto the outside of the lead screw 51 and is connected to the upper support plate 7 via the connecting rod 53. The nut 52 moves the upper support plate 7 in conjunction with the connecting rod 53, thereby adjusting the size of the cavity between the upper support plate 7 and the lower support plate 6.

[0030] To prevent materials from accumulating around the perimeter of the storage bin 1 and failing to gather, a material-pushing component is provided at the bottom of the inner cavity of the storage bin 1 to move the materials toward the center.

[0031] like Figure 2As shown, the material pushing assembly comprises four groups of scrapers 11 and a driving motor 12, one end of the scraper 11 is pivotally connected to the bottom of the inner cavity of the storage tank 1, the scraper 11 is in an arc shape, and the arc length is 80-90°. The four scrapers 11 are distributed at equal angles around the center of the discharging channel 4, the driving motor 12 is arranged at the bottom of the storage tank 1 and connected with the rotating shaft of the scraper 11. Through the reciprocating rotation of the scraper 11, the material located at the edge of the storage tank 1 can be pushed to the center.

[0032] Although the embodiments of the present application have been shown and described, it should be understood by those ordinary skilled in the art that various changes, modifications, replacements and modifications can be made to these embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A powder material quantitative pneumatic conveying device, comprising a storage tank (1), a gas conveying pipe (2), a fan (3), and a discharging channel (4), wherein the fan (3) is arranged at the head end of the gas conveying pipe (2), and the bottom of the storage tank (1) is communicated with the gas conveying pipe (2) through the discharging channel (4), characterized in that: The storage tank (1) is internally provided with a material positioning mechanism, which comprises a support (9), a driver, a lower supporting plate (6), an upper supporting plate (7), a light rod (8) and an adjusting assembly (5). The driver is used for driving the support (9) to lift, the light rod (8) is fixed at the bottom of the support (9), the lower supporting plate (6) is arranged at the bottom of the light rod (8), the upper supporting plate (7) is sleeved on the light rod (8), the adjusting assembly (5) is arranged on the support (9) and used for adjusting the height of the upper supporting plate (7). The adjusting assembly (5) comprises a lead screw (51), a nut (52), a connecting rod (53) and a lifting motor (54). The lead screw (51) is vertically pivoted in the support (9), the lifting motor (54) is arranged on the support (9) and coaxially connected with the lead screw (51), the nut (52) is threadedly sleeved outside the lead screw (51), and the nut (52) is connected with the upper supporting plate (7) through the connecting rod (53). ​ 2. A powder material dosing pneumatic conveying device according to claim 1, characterized in that The outer contours of the lower supporting plate (6) and the upper supporting plate (7) are vertically matched with the shape of the blanking channel (4) and can be circular, and the lower supporting plate (6), the upper supporting plate (7) and the blanking channel (4) are vertically piston type slidingly matched.

3. A powder material dosing pneumatic conveying device according to claim 2, characterized in that: Sealing rings are arranged on the outer rings of the lower supporting plate (6) and the upper supporting plate (7) and are in contact with the inner walls of the blanking channel (4).

4. A powder material dosing pneumatic conveying device according to claim 1, characterized in that: The bottom of the inner cavity of the storage tank (1) is provided with a material stirring assembly for stirring the material to the center.

5. A powder material dosing pneumatic conveying device according to claim 4, characterized in that: The material stirring assembly comprises four scraper plates (11) and a driving motor (12). One end of the scraper plate (11) is pivoted at the bottom of the inner cavity of the storage tank (1), the four scraper plates (11) are distributed at equal angles around the center of the blanking channel (4), and the driving motor (12) is arranged at the bottom of the storage tank (1) and connected with the rotating shaft of the scraper plate (11).

6. A powder material dosing pneumatic conveying device according to claim 1, characterized in that: The top of the storage tank (1) is provided with a feeding port (13).

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