Connecting device

Abstract

The utility model discloses a connecting device which comprises a feeding bin, a feeding port of the feeding bin is connected with a first device, and the bin bottom of the feeding bin is conical. Finished material of the fluidized bed (first device) is buffered and stored by the feeding bin. The vacuum generator comprises a vacuum gas inlet, a vacuum gas outlet and a vacuum adsorption port, the vacuum gas inlet is connected with a gas pipeline, the vacuum gas outlet is connected with a second device, and the vacuum adsorption port is connected with the discharge port of the bin bottom; and gas in the gas pipeline can carry materials in the first device to enter the second device through the vacuum generator. By arranging the connecting device between the fluidized bed and the rotary furnace, the material subjected to primary coating by the fluidized bed directly enters the rotary furnace for secondary coating, so that the secondary coating of the material is directly completed by one-step operation without adding and taking the material between the fluidized bed and the rotary furnace, and the material is continuously operated in a closed manner through the connecting device; and the purpose of efficient and safe production is achieved.

Description

Technical Field

[0001] The utility model relates to a connecting device used for connecting a fluidized bed and a rotary kiln. Background Art

[0002] A fluidized bed is a reactor that uses gas or liquid to pass through a granular solid layer to put the solid particles into a suspended motion state, and to carry out a gas-solid phase reaction process or a liquid-solid phase reaction process. Due to the poor coating properties of the fluidized bed, the material needs to be discharged later and then passed through a rotary kiln for re-coating separately to achieve the purpose of complete material coating. At present, due to the poor coating effect of the fluidized bed, the material may spontaneously combust when discharged later and stored in contact with air. For example, CVD silane gas deposition will spontaneously combust if it is not completely coated, which poses certain hazards. In addition, intermittent secondary coating is required. The material that has been coated once in the fluidized bed may be exposed to an oxygen environment while waiting for the secondary coating. The material may spontaneously combust when exposed to air for a long time, causing unnecessary impacts. Utility Model Content

[0003] In order to overcome the above shortcomings, the purpose of this utility model is to provide a connecting device installed between the fluidized bed and the rotary kiln. The material coated once in the fluidized bed does not need to be taken out and can directly enter the rotary kiln for secondary coating, thereby achieving the purpose of efficient and safe production.

[0004] In order to achieve the above purpose, the technical solution adopted by the present invention is: a connecting device, comprising:

[0005] A feeding silo, the feeding port of which is connected to the first device, and the bottom of which is conical; the feeding silo is used to buffer and store the finished materials of the fluidized bed (first device).

[0006] A vacuum generator, comprising a vacuum inlet, a vacuum outlet, and a vacuum suction port, wherein the vacuum inlet is connected to a gas pipeline, the vacuum outlet is connected to a second device, and the vacuum suction port is connected to the discharge port at the bottom of the bin;

[0007] The gas in the gas pipeline can carry the material in the first device through the vacuum generator into the second device.

[0008] Furthermore, a light sensor is provided on the side wall of the feeding bin, and the light sensor can sense the height of the material in the feeding bin; a feeding valve is provided at the feed inlet of the feeding bin, and the feeding valve is opened or closed according to the height of the material in the feeding bin.

[0009] Furthermore, the silo bottom is a partition-type structure, including an inner wall and an outer wall. Air holes are evenly opened on the inner wall as a gas distribution plate. A gas buffer chamber is formed between the inner wall and the outer wall. The gas buffer chamber is used to buffer the gas and keep the airflow smooth and without fluctuations. The gas buffer chamber is provided with an air inlet and an air outlet. The gas in the gas buffer chamber can enter the silo bottom through the air holes on the inner wall and contact the material. By designing the silo bottom as a partition-type structure, the inner wall is evenly opened with holes as a gas distribution plate, which plays the structural role of the distribution plate. The non-condensable gas passes through the interlayer buffer chamber at the silo bottom, and after being evenly distributed by the distribution plate, it acts on the material in the silo, increases the gaps between the particles, improves the fluidity, reaches a fluidized state, and makes the material fall smoothly and evenly.

[0010] Furthermore, an air path valve is provided at the air inlet, and when the air path valve is opened, the fluidizing gas enters the gas buffer chamber, and after being evenly distributed by the distribution plate, enters the bottom of the silo to act on the particulate material.

[0011] Furthermore, the connecting device also includes a hopper, the top of which is provided with a feed port connected to the discharge port of the first device, the material in the first device can enter the hopper, and the discharge port of the hopper is connected to the feed port of the feeding bin.

[0012] Furthermore, the hopper shell is provided with an interlayer, and is also provided with a water inlet and a water outlet connected to the interlayer. Cooling water enters the interlayer through the water inlet to cool the material in the hopper, and then flows out through the water outlet. The fluidized bed discharge is cooled by a water-cooling jacket, thereby improving cooling efficiency.

[0013] Furthermore, a gas circuit valve is provided on the gas inlet pipeline.

[0014] Furthermore, a ball valve is provided at the connection between the vacuum adsorption port and the bin bottom.

[0015] Furthermore, it also includes a feed pipe, which is connected to the vacuum outlet and the second device.

[0016] Furthermore, the first device is a fluidized bed, and the second device is a rotary kiln.

[0017] The beneficial effects of the utility model are:

[0018] 1) By setting a connecting device between the fluidized bed and the rotary kiln, the material coated once in the fluidized bed directly enters the rotary kiln for secondary coating, realizing the secondary coating of the material in one step. There is no need to add or take out material between the fluidized bed and the rotary kiln. The material is closed and continuously operated through the connecting device, achieving the purpose of efficient and safe production.

[0019] 2) The protective gas is used to create a vacuum through the vacuum generator to entrain the material and send it into the rotary kiln. The setting of the vacuum generator device eliminates the need for machine feeding and saves energy.

[0020] 3) Through the tapered wall structure at the bottom of the silo and the openings on the inner wall, gas is passed through to form a fluidized state, so that the material can be evenly discharged without accumulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 This is a schematic diagram of a connecting device for connecting a rotary kiln and a fluidized bed according to an embodiment of the present invention;

[0024] Figure 2 This is a schematic diagram of a connecting device according to an embodiment of the present invention.

[0025] In the figure: 1. Hopper; 11. Interlayer; 12. Water inlet; 13. Water outlet; 2. Feeding bin; 21. Bin bottom; 211. Outer wall; 212. Inner wall; 213. Gas buffer chamber; 214. Air inlet; 215. Air outlet; 3. Feeding valve; 4. Photosensor; 5. Vacuum generator; 51. Vacuum inlet; 52. Vacuum outlet; 53. Vacuum adsorption port; 6. Gas pipeline; 7. Feeding pipeline; 8. Rotary kiln; 9. Fluidized bed. DETAILED DESCRIPTION

[0026] To make the above-mentioned objects, features, and advantages of the present invention more clearly understood, the following detailed description of specific embodiments of the present invention is provided in conjunction with the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0027] See attached Figure 1 and attached Figure 2As shown, a connecting device in this embodiment is used to connect the fluidized bed 9 and the rotary kiln 8, so that the material is coated in the fluidized bed 9 and then transported to the rotary kiln 8 for secondary coating.

[0028] The connecting device includes a hopper 1, with a feed port at the top connected to the discharge port of the fluidized bed 9. The material coated by the fluidized bed 9 can enter the hopper 1. The shell of the hopper 1 is provided with an interlayer 11, and is also provided with a water inlet 12 and a water outlet 13. Cooling water enters the interlayer 11 through the water inlet 12 to cool the material in the hopper 1, and then flows out through the water outlet 13.

[0029] The connection device also includes a feed bin 2, which is connected to the discharge port of the hopper 1. The material can enter the feed bin 2 after being cooled by the hopper 1. A light sensor 4 is set on the side wall of the feed bin 2, and a feed valve 3 is set at the connection between the feed bin 2 and the hopper 1. When the material in the feed bin 2 reaches a certain capacity, the light sensor 4 senses that the feed valve 3 stops rotating, and the feeding of the feed bin 2 is stopped.

[0030] In some embodiments, the light sensor 4 is electrically connected to the feeding valve 3. When the light sensor 4 senses material, the feeding valve 3 automatically closes, stopping feeding. The light sensor 4 can also be connected to an alarm. When the light sensor 4 senses material, the alarm is activated to remind the staff to close the feeding valve 3.

[0031] In some embodiments, the bottom of the feed silo 2 is conical, that is, the silo bottom 21 of the feed silo 2 is conical. The silo bottom 21 is a partition wall structure, including an inner wall 212 and an outer wall 211, and the inner wall 212 is evenly opened with holes as a gas distribution plate. After the material enters the silo bottom 1, it contacts the distribution plate, and the distribution plate supports the material. A gas buffer chamber 213 is formed between the inner wall 212 and the outer wall 211. The gas buffer chamber 213 is provided with an air inlet 214 and an air outlet 215. An air circuit valve is provided at the air inlet 214. When the air circuit valve is opened, the fluidizing gas enters the gas buffer chamber 213, and after being evenly distributed by the distribution plate, enters the silo bottom 21 to act on the granular material, thereby increasing the gap between the material and the silo wall and the material particles, reducing friction, and achieving fluidization. The fluidizing gas is an inert gas, and nitrogen or argon is selected.

[0032] In some embodiments, a vacuum generator 5 is further included. The vacuum generator 5 includes a vacuum air inlet 51, a vacuum air outlet 52, and a vacuum suction port 53. The vacuum air inlet 51 is connected to the gas pipeline 6, the vacuum air outlet 52 is connected to the rotary kiln 8 via the feed pipe 7, and the vacuum suction port 53 is connected to the discharge port of the silo bottom 21. An air valve is provided on the gas inlet pipeline 6, and a ball valve is provided at the connection between the vacuum suction port 53 and the silo bottom 21. The air valve on the gas pipeline 6 is opened to allow nitrogen to enter the rotary kiln 8. High-speed air flows through the vacuum generator 5, generating a certain degree of vacuum. The ball valve at the silo bottom 21 is opened, and the nitrogen carries the material through the feed pipe 7 into the rotary kiln 8.

[0033] Working process:

[0034] The material passes through fluidized bed 9 and falls into hopper 1, where it is cooled by circulating water within interlayer 11 of hopper 1. Feed valve 3 is activated to feed hopper 2. Rotating feed valve 3 adjusts the impeller rotation speed according to conveying requirements, discharging the material evenly and continuously into hopper 2.

[0035] When the material in the feeding bin 2 reaches a certain capacity, the light sensor 4 senses it and the feeding valve 3 stops rotating.

[0036] Open the fluidizing gas valve, and the fluidizing gas enters the gas buffer chamber 213 of the silo bottom 21. After being evenly distributed through the distribution plate (inner wall 212) of the silo bottom 21, it enters the interior of the silo bottom 21 and acts on the granular material, increasing the gap between the material and the silo wall and the material particles, reducing friction resistance, and fluidizing the material so that it can fall smoothly into the vacuum generator 5 and enter the rotary kiln 8 through the feed pipe with negative pressure.

[0037] Open the gas valve on the bottom nitrogen pipeline 6, and let nitrogen into the rotary kiln 8. The high-speed air flows through the vacuum generator 5 to generate a certain vacuum degree. Open the ball valve at the bottom of the bin 21, and the nitrogen carries the material into the rotary kiln 8 through the feed pipe.

[0038] After the fluidization of this batch of materials is completed, the next batch of materials enters the hopper 1, and this is repeated to form a continuous operation. At the same time, it does not come into contact with the external air environment, forming a closed operation.

[0039] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0040] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

[0041] In addition, the various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

[0042] The above implementation methods are only for illustrating the technical concept and features of the utility model. Its purpose is to enable people familiar with this technology to understand the content of the utility model and implement it. It cannot be used to limit the scope of protection of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the scope of protection of the utility model.

Claims

1. A connecting device, characterized in that: include: A feeding bin (2), wherein the feeding port of the feeding bin (2) is connected to the first device, and the bottom (21) of the feeding bin (2) is conical; A vacuum generator (5), the vacuum generator (5) comprising a vacuum air inlet (214), a vacuum air outlet (215) and a vacuum suction port (53), the vacuum air inlet (214) being connected to a gas pipeline (6), the vacuum air outlet (215) being connected to a second device, and the vacuum suction port (53) being connected to a discharge port of the silo bottom (21); The gas in the gas pipeline (6) can carry the material in the first device through the vacuum generator (5) into the second device.

2. The connecting device according to claim 1, characterized in that A light sensor (4) is provided on the side wall of the feeding bin (2), and the light sensor (4) can sense the height of the material in the feeding bin (2); a feeding valve (3) is provided at the feed inlet of the feeding bin (2), and the feeding valve (3) is opened or closed according to the height of the material in the feeding bin (2).

3. The connecting device according to claim 1, characterized in that The silo bottom (21) is a partition-type structure, comprising an inner wall (212) and an outer wall (211). Air holes are evenly provided on the inner wall (212) as a gas distribution plate. A gas buffer chamber (213) is formed between the inner wall (212) and the outer wall (211). An air inlet (214) and an air outlet (215) are provided on the gas buffer chamber (213). The gas in the gas buffer chamber (213) can enter the silo bottom (21) through the air holes on the inner wall (212) and come into contact with the material.

4. The connection device according to claim 3, characterized in that An air path valve is provided at the air inlet (214). When the air path valve is opened, fluidizing gas enters the gas buffer chamber (213), is evenly distributed by the distribution plate, and then enters the interior of the silo bottom (21) to act on the granular material.

5. The connection device according to claim 1, characterized in that The connecting device also includes a hopper (1), the top of which is provided with a feed port connected to the discharge port of the first device, so that the material in the first device can enter the hopper (1), and the discharge port of the hopper (1) is connected to the feed port of the feeding bin (2).

6. The connecting device according to claim 5, characterized in that The shell of the hopper (1) is provided with an interlayer (11), and is also provided with a water inlet (12) and a water outlet (13) communicated with the interlayer (11). Cooling water enters the interlayer (11) through the water inlet (12) to cool the material in the hopper (1), and then flows out through the water outlet (13).

7. The connecting device according to any one of claims 1 to 6, characterized in that: The gas pipeline (6) is provided with a gas path valve.

8. The connecting device according to any one of claims 1 to 6, characterized in that: A ball valve is provided at the connection between the vacuum adsorption port (53) and the bin bottom (21).

9. The connecting device according to any one of claims 1 to 6, characterized in that: It also includes a feed pipe (7), wherein the feed pipe (7) is connected to the vacuum device air outlet (52) and the second device.

10. The connecting device according to any one of claims 1 to 6, characterized in that: The first device is a fluidized bed (9), and the second device is a rotary kiln (8).

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