CN215963155U

CN215963155U - Powder feeding device

Info

Publication number: CN215963155U
Application number: CN202122186937.0U
Authority: CN
Inventors: 岳敏; 郑林; 黄绵彬; 张小平; 邓清夫
Original assignee: Zhejiang Yanyi New Energy Technology Co ltd
Current assignee: Zhejiang Yanyi New Energy Technology Co ltd
Priority date: 2021-09-10
Filing date: 2021-09-10
Publication date: 2022-03-08
Anticipated expiration: 2031-09-10

Abstract

The utility model discloses a powder feeding device which comprises a powder storage bin and a mixing kettle, wherein the powder storage bin is provided with a feeding port, a feeding mechanism is arranged between the powder storage bin and the mixing kettle, the feeding mechanism comprises a feeder, a buffer hopper and a hose, the inlet of the feeder is connected with the discharge port of the powder storage bin, the outlet of the feeder is connected with the inlet of the buffer hopper, the outlet of the buffer hopper is connected with the inlet of the mixing kettle through the hose, a first pneumatic valve is arranged between the hose and the buffer hopper, a second pneumatic valve is arranged between the hose and the mixing kettle, and the mixing kettle is provided with a first weighing module, a stirring mechanism, a liquid phase inlet valve and a first emptying valve. Compared with the prior art, the powder in the powder storage bin is conveyed and cached by arranging the feeding mechanism, the feeding amount in the mixing kettle is monitored by the first weighing module, the accuracy of the feeding amount is ensured, and the stability of feeding of the powder is ensured.

Description

Powder feeding device

Technical Field

The utility model relates to the technical field of powder feeding production, in particular to a powder feeding device.

Background

Some raw materials in chemical production are in a powder state, and some of the powder raw materials have the properties of high toxicity, flammability, explosiveness, high corrosion and the like, and are not suitable for long-term contact of human bodies, so that the feeding production needs to be carried out by means of equipment.

At present, powder feeding equipment has unstable feeding amount, and the quality stability of production is influenced by large feeding deviation.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a powder feeding device, which aims to solve the technical problem of ensuring the stability of powder feeding.

In order to solve the problems, the utility model adopts the following technical scheme: the utility model provides a powder feed arrangement, the device includes that the powder stores the storehouse, mixes the cauldron, the storehouse is stored to the powder is provided with the charge door, the powder is stored the storehouse and is provided with feed mechanism between the cauldron, feed mechanism includes feeder, buffer memory fill, hose, the import of feeder is stored the discharge gate in storehouse with the powder and is connected, the export of feeder and the access connection that buffer memory was fought, the export that buffer memory was fought passes through the hose and mixes the access connection of cauldron, is provided with first pneumatic valve between hose and the buffer memory fill, is provided with the second pneumatic valve between hose and the mixed cauldron, mixed cauldron is provided with first weighing module, rabbling mechanism, liquid phase inlet valve and first emptying valve.

Furthermore, the feeder comprises a first driving motor and a screw feeder, and the first driving motor is in transmission connection with the screw feeder.

Further, the screw feeder is a single screw or a twin screw feeder.

Further, rabbling mechanism includes puddler, second driving motor, and the puddler is connected with second driving motor's output shaft, and the puddler is located and is mixed the cauldron, and second driving motor sets up on mixing the cauldron.

Further, a nitrogen inlet valve and a second emptying valve are arranged on the powder storage bin.

Further, a second weighing module is arranged on the powder storage bin.

Furthermore, an observation sight glass is arranged on the cache bucket.

Further, the first pneumatic valve and the second pneumatic valve are both pneumatic ball valves.

Further, a connecting valve is arranged on a discharge hole of the mixing kettle.

Compared with the prior art, the feeding mechanism is arranged to convey and cache the powder in the powder storage bin, and the first weighing module is used for monitoring the feeding amount in the mixing kettle, so that the accuracy of the feeding amount is ensured, and the stability of powder feeding is ensured.

Drawings

Fig. 1 is an overall schematic view of the present invention.

In the figure:

1. a powder storage bin; 2. a feed inlet; 3. a nitrogen inlet valve; 4. a second vent valve; 5. a second weighing module; 6. a feeder; 7. a first drive motor; 8. caching buckets; 9. an observation sight glass; 10. a first pneumatic valve; 12. a second pneumatic valve; 13. a mixing kettle; 14. a stirring rod; 15. a second drive motor; 16. a liquid phase inlet valve; 17. a first vent valve; 18. a first weighing module; 19. a connecting valve; 20. a screw feeder.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

As shown in fig. 1, the utility model discloses a powder feeding device, which comprises a powder storage bin 1 and a mixing kettle 13, wherein the top of the powder storage bin 1 is sequentially provided with a feeding port 2, a nitrogen inlet valve 3 and a second vent valve 4, the outer wall of the bin body of the powder storage bin 1 is provided with a feeding mechanism for weighing powder in the powder storage bin 1, and a feeding mechanism is arranged between the powder storage bin 1 and the mixing kettle 13 and used for conveying the powder in the powder storage bin 1 to the mixing kettle 13; the feeding mechanism comprises a feeder 6, a buffer hopper 8 and a hose 11, a discharge port of the powder storage bin 1 is connected with an inlet of the feeder 6, an outlet of the feeder 6 is connected with an inlet of the buffer hopper 8, an observation sight glass 9 can be installed at the upper part of the buffer hopper 8 to manually observe the powder in the buffer hopper 8, two ends of the hose 11 are respectively connected with the outlet of the buffer hopper 8 and an inlet of a mixing kettle 13, a first pneumatic valve 10 is arranged between the hose 11 and the buffer hopper 8, a second pneumatic valve 12 is arranged between the hose and the mixing kettle 13, a liquid phase inlet valve 16 and a first emptying valve 17 are sequentially installed at the top of the mixing kettle 13, and a stirring mechanism is arranged in the mixing kettle 13 to mix the powder and the liquid phase in the mixing kettle; a first weighing module 18 is arranged on the outer wall of the mixing kettle 13 to monitor the feeding amount of the mixing kettle 13; the discharge port of the mixing kettle 13 is also connected to a reaction kettle (not shown in the figure) through a connecting valve 19, which is prior art and will not be described in detail herein.

As shown in fig. 1, the feeder 6 includes a first driving motor 7 and a screw feeder 20, the first driving mechanism 7 is connected to drive the screw feeder 20 to rotate, an inlet of the screw feeder 20 is connected to a discharge port of the powder storage bin 1, an outlet of the screw feeder 20 is connected to an inlet of the buffer hopper 8, in the present invention, the screw feeder 20 may be a single screw or a twin screw feeder, and the first driving motor 7 may be a variable frequency driving motor.

As shown in fig. 1, on the basis of the above structure, the stirring mechanism includes a stirring rod 14 and a second driving motor 15, the stirring rod 14 is connected to an output shaft of the second driving motor 15, the stirring rod 14 is disposed in the mixing tank 13, and the second driving motor 15 is disposed on the mixing tank 13.

In the present invention, the first pneumatic valve 10 and the second pneumatic valve 12 are both pneumatic ball valves.

The utility model can be controlled by a Distributed Control System (DCS), controls all valves, a feeding driving motor and a stirring driving motor and receives weight information fed back by a storage bin weighing module and a mixing kettle weighing module

The working process is as follows: when the feeding is confirmed to be started, powder is manually added into the feeding port 2, and the weight of the powder storage bin 1 is recorded through the second weighing module 5;

the liquid phase inlet valve 16 is opened to start adding a certain amount of liquid phase raw materials into the mixing kettle 13, when the liquid phase raw materials are added, the first emptying valve 17 of the mixing kettle 13 is opened to prevent the pressure in the mixing kettle 13 from being too high, the use of the equipment is prevented from being influenced, and the liquid phase feeding amount is recorded through the first weighing module 18.

Then the second driving motor 15 of the mixing kettle 13 is started to rotate the stirring rod 14, and then the first pneumatic valve 10, the second pneumatic valve 12 and the first driving motor 7 are opened, and the powder is conveyed to the buffer hopper 8 through the screw feeder 20 and then enters the mixing kettle 13 through the feeding hose 11.

According to the information fed back by the first weighing module 18 of the mixing kettle 13, when 5kg of powder reaches the set amount, the first driving motor 7 automatically reduces the rotating speed, the powder is slowly added, when the set amount is reached, the second pneumatic valve 12 and the first pneumatic valve 10 are successively closed, then the first driving motor 7 is stopped, and the powder feeding is completed.

After accomplishing the powder feeding, open the powder and store the nitrogen gas import valve 3 at 1 top in storehouse and continuously let in trace nitrogen gas, ensure dry in the powder storehouse, prevent that the powder from weing, open second atmospheric valve 4, discharge the main blow-down pipe through second atmospheric valve 4 with unnecessary gas.

The utility model has the beneficial effects that:

1. during the powder in the storehouse is stored with the powder through the feeder was carried the buffer memory and is fought in first pneumatic valve and second pneumatic valve all opened, during the powder free fall got into mixing kettle, this process was monitored the feeding volume through first weighing module, when still remaining 5kg, first driving motor reduce frequency, reduce feed rate, the effective control feeding volume, when reaching the setting value, close the second pneumatic valve earlier, close first pneumatic valve again, ensure the accuracy of feeding volume.

2. Through twice pneumatic valves, not only effective control powder feeding volume, the liquid steam that still effectively completely cuts off in the mixing kettle rises, and makes the pipeline remain the powder and appear the moisture absorption phenomenon.

Claims

1. The utility model provides a powder feed arrangement which characterized in that: the device comprises a powder storage bin (1) and a mixing kettle (13), wherein the powder storage bin (1) is provided with a feeding port (2), be provided with feed mechanism between storehouse (1) is stored to powder and mixed cauldron (13), feed mechanism includes feeder (6), buffer memory fill (8), hose (11), the import of feeder (6) is connected with the discharge gate that storehouse (1) was stored to the powder, the export of feeder (6) and the access connection of buffer memory fill (8), the export of buffer memory fill (8) passes through the access connection of hose (11) and mixed cauldron (13), be provided with first pneumatic valve (10) between hose (11) and buffer memory fill (8), be provided with second pneumatic valve (12) between hose and mixed cauldron (13), mixed cauldron (13) are provided with first weighing module (18), rabbling mechanism, liquid phase inlet valve (16) and first emptying valve (17).

2. The powder feeding device according to claim 1, wherein: the feeder (6) comprises a first driving motor (7) and a screw feeder (20), and the first driving motor (7) is in transmission connection with the screw feeder (20).

3. The powder feeding device according to claim 2, wherein: the screw feeder (20) is a single screw or twin screw feeder.

4. The powder feeding device according to claim 1, wherein: the stirring mechanism comprises a stirring rod (14) and a second driving motor (15), the stirring rod (14) is connected with an output shaft of the second driving motor (15), the stirring rod (14) is arranged in the mixing kettle (13), and the second driving motor (15) is arranged on the mixing kettle (13).

5. A powder feeding device according to any one of claims 1 to 4, wherein: and a nitrogen inlet valve (3) and a second emptying valve (4) are arranged on the powder storage bin (1).

6. The powder feeding device according to claim 1, wherein: and a second weighing module (5) is arranged on the powder storage bin (1).

7. The powder feeding device according to claim 1, wherein: an observation sight glass (9) is arranged on the buffer bucket (8).

8. The powder feeding device according to claim 1, wherein: the first pneumatic valve (10) and the second pneumatic valve (12) are both pneumatic ball valves.

9. The powder feeding device according to claim 1, wherein: and a connecting valve (19) is arranged on a discharge hole of the mixing kettle (13).