Solid powder feeding system

Abstract

The invention discloses a feeding system for solid powder. The feeding system comprises a feeding box, a conversion box and a reaction kettle, the conversion box is connected with the feeding box through a first vacuum pipe, a second vacuum pipe is connected to the conversion box, a material cavity and a transfer cavity are formed in the conversion box, a first valve is arranged between the material cavity and the transfer cavity, the first vacuum pipe is communicated with the material cavity, a nitrogen pipe is further connected to the conversion box, and the nitrogen pipe is communicated with the transfer cavity. The nitrogen pipe is communicated with the transfer storage cavity; the reaction kettle is connected with the transfer box through a conveying pipe, and the conveying pipe is communicated with the transfer cavity. According to the reaction kettle, materials can enter the transfer storage cavity after entering the conversion box from the feeding box, air can be exhausted by introducing nitrogen into the transfer storage cavity through the nitrogen pipe, and air can be prevented from entering the reaction kettle when the materials in the conversion cavity enter the reaction kettle, so that the exhaust time of the reaction kettle is shortened, and the production efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of feeding systems, and in particular to a feeding system for solid powder. Background Art

[0002] In the chemical industry, the production of some products requires the mixing of multiple raw materials, and the reactions that occur during the mixing process can lead to the synthesis of the products. The mixing process is generally carried out in a reactor, and multiple raw materials need to be transported into the reactor. Some solid powder materials are generally loaded by vacuum loading during the loading process; some chemical products require specific reaction conditions when reacting in the reactor, such as the need to exclude air to avoid contact between the material and the air in the reactor. Therefore, in order to exclude the air in the reactor, nitrogen is generally filled into the reactor to replace the air in the reactor; however, in actual production, after multiple materials are transported to the reactor, nitrogen is filled into the reactor to replace the air in the reactor. Subsequent reactions can only be carried out after the air in the reactor is completely discharged. Therefore, it takes a certain amount of time for nitrogen to be filled into the reactor to replace the air, which will increase production time and affect production efficiency. Summary of the Invention

[0003] The object of the present invention is to provide a solid powder feeding system in view of the above-mentioned deficiencies in the prior art.

[0004] In order to solve the above problems, the technical solution adopted by the present invention is: A solid powder feeding system includes a feeding box; A conversion box is connected to the feeding box via a first vacuum tube, the conversion box is connected to a second vacuum tube, a material chamber and a transfer chamber are provided inside the conversion box, a first valve is provided between the material chamber and the transfer chamber, the first vacuum tube is connected to the material chamber, and the conversion box is further connected to a nitrogen tube, which is connected to the transfer chamber; The reactor is connected to the conversion box via a delivery pipe, and the delivery pipe is communicated with the transfer chamber.

[0005] Preferably, a feed port and a discharge port are provided on the side wall of the feeding box, an operating chamber and a collecting chamber are provided in the feeding box, the operating chamber and the collecting chamber are connected, a grid is fixedly provided in the operating chamber, the feed port and the discharge port are connected to the operating chamber, and the first vacuum tube is connected to the collecting chamber.

[0006] Preferably, an operating hole is provided on the feeding box, a rubber glove is fixedly installed in the feeding box, the rubber glove is located in the operating cavity, and the inner cavity of the rubber glove is communicated with the operating hole.

[0007] Preferably, the collecting chamber is a funnel-shaped structure, and the first vacuum tube is connected to the lower end of the collecting chamber.

[0008] Preferably, a dust removal fan is provided on the top of the feeding box, and the dust removal fan is connected to the operating chamber.

[0009] Preferably, a filter element is provided in the material chamber, and the filter element is located above the first vacuum tube.

[0010] Preferably, the conversion box is further connected to a backflush pipe, the backflush pipe is communicated with the material chamber, and a second valve is provided on the backflush pipe.

[0011] Preferably, a third valve is provided at the bottom of the conversion box.

[0012] The beneficial effects of adopting the above technical solution are: In the present invention, a transfer box is added between the feeding box and the reactor, the material is added to the feeding box, and the material is transported from the feeding box to the material chamber of the transfer box by vacuum loading. After a certain amount of material is accumulated, the first valve is opened to allow the material to enter the transfer chamber. Then, nitrogen is filled into the transfer chamber through a nitrogen pipe to discharge the air in the transfer chamber so that the transfer chamber is completely filled with nitrogen. The charging process can be carried out during the reaction of the reactor. When the reactor completes production and discharges the product, the material in the transfer chamber can be quickly transported to the reactor, while preventing air from entering the reactor. After the material transportation is completed, production can be carried out immediately, which can save time and improve production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a flow chart of the present invention; Figure 2 yes Figure 1 A magnified view of part A; Figure 3 It is a front view of the feeding box of the present invention; Figure 4 It is a schematic diagram of the internal structure of the feeding box of the present invention; Figure 5 This is a front view of the conversion box of the present invention; Figure 6 It is a side view of the conversion box of the present invention.

[0014] In the figure: 1 is the feeding box, 2 is the conversion box, 3 is the first vacuum tube, 4 is the second vacuum tube, 5 is the material chamber, 6 is the transfer chamber, 7 is the first valve, 8 is the nitrogen pipe, 9 is the reactor, 10 is the conveying pipe, 11 is the feed port, 12 is the discharge port, 13 is the operation chamber, 14 is the collection chamber, 15 is the grille, 16 is the operation hole, 17 is the dust removal fan, 18 is the filter element, 19 is the backflush pipe, 20 is the second valve, 21 is the third valve, and 22 is the exhaust pipe. DETAILED DESCRIPTION

[0015] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0016] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0017] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0018] like Figure 1 and Figure 2 As shown, a solid powder feeding system includes a feeding box 1, a conversion box 2 and a reactor 9. The feeding box 1 and the conversion box 2 are connected by a first vacuum tube 3. One end of the first vacuum tube 3 is connected to the bottom of the feeding box 1, and the other end is connected to the conversion box 2. A butterfly valve is provided on the first vacuum tube 3 to control the on and off of the first vacuum tube 3; a material chamber 5 and a transfer chamber 6 are provided in the conversion box 2. The material chamber 5 is located above the transfer chamber 6. One end of the first vacuum tube 3 is connected to the material chamber 5. A second vacuum tube 4 is connected to the conversion box 2. One end of the second vacuum tube 4 is connected to the top of the conversion box 2, and the other end is connected to a vacuum pump for extracting vacuum. The second vacuum tube 4 is connected to the material chamber 5, and a first valve 7 is provided between the material chamber 5 and the transfer chamber 6 (reference Figure 6), the first valve 7 adopts a pneumatic wafer butterfly valve. A nitrogen pipe 8 is also connected to the conversion box 2, and the nitrogen pipe 8 is connected to the transfer chamber 6. The reactor 9 and the conversion box 2 are connected through a delivery pipe 10. One end of the delivery pipe 10 is connected to the transfer chamber 6, and the other end is connected to the reactor 9. The reactor 9 is located below the conversion box 2. The material in the conversion box 2 can fall from the delivery pipe 10 into the reactor 9 due to gravity.

[0019] In the present invention, solid powder materials for producing chemical products are put into the feeding box 1, and the materials fall to the bottom of the feeding box 1 due to the action of gravity. When the materials in the feeding box 1 accumulate to a certain amount, the first valve 7 is closed, the butterfly valve on the first vacuum tube 3 is opened, and the vacuum pump connected to the second vacuum tube 4 is started to evacuate the material chamber 5. At the same time, due to the action of suction, the materials in the feeding box 1 can be extracted into the material chamber 5 in the conversion box 2 through the first vacuum tube 3. When the materials in the material chamber 5 accumulate to a certain amount, the vacuum pump and the butterfly valve on the first vacuum tube 3 are closed, and the first valve 7 is opened. The material can fall from the material chamber 5 into the transfer chamber 6, and at the same time, the nitrogen pipe 8 transports nitrogen to the transfer chamber 6, completely exhausting the air in the transfer chamber 6, so that the gas in the transfer chamber 6 is completely converted into nitrogen and replaced, and then the first valve 7 is closed to seal the transfer chamber 6 to prevent nitrogen leakage; when the reaction in the reactor is completed and the finished product is discharged, the material in the transfer chamber 6 is transported from the delivery pipe 10 to the reactor 9. Since the gas in the transfer chamber 6 is nitrogen, no air will enter the reactor 9 from the transfer chamber 6. After the material enters the reactor 9, production can be carried out directly, which reduces the waiting time for inflation and improves production efficiency.

[0020] It should be noted that, referring to Figure 1 、 Figure 2 and Figure 5 , a ball valve is provided on the nitrogen pipe 8 for controlling the on-off of the nitrogen pipe 8, and the end of the nitrogen pipe 8 away from the conversion box 2 is connected to a nitrogen source, which can be a nitrogen cylinder filled with nitrogen; the conversion box 2 is also connected to an exhaust pipe 22, and a ball valve is provided on the exhaust pipe 22 for controlling the on-off of the exhaust pipe 22, and the exhaust pipe 22 is connected to the transfer chamber 6. When the nitrogen pipe 8 passes nitrogen into the transfer chamber 6, the exhaust pipe 22 is opened, and the air in the transfer chamber 6 can be discharged from the exhaust pipe 22. When the nitrogen fills the transfer chamber 6, the first valve 7 can be closed, and the ball valve on the exhaust pipe 22 is closed at the same time to seal the transfer chamber 6; a third valve 21 is also provided at the bottom of the conversion box 2, and the third valve 21 is a flange butterfly valve. One end of the third valve 21 is connected to the conversion box 2, and the other end is connected to the delivery pipe 10. The third valve 21 can control the on-off of the delivery pipe 10, so that the material can enter the delivery pipe 10 and be delivered to the reactor 9.

[0021] Furthermore, if Figure 3 and Figure 4 As shown, the side wall of the feeding box 1 is provided with a feeding port 11 and a discharging port 12, which are used to put the packaging bag containing the material into the feeding box 1 and take it out from the feeding box 1. An operating chamber 13 and a collecting chamber 14 are provided in the feeding box 1. The operating chamber 13 and the collecting chamber 14 are connected. The operating chamber 13 is located above the collecting chamber 14. The operating chamber 13 is fixedly provided with a grid 15, and the grid 15 is located between the operating chamber 13 and the collecting chamber 14. The feeding port 11 and the discharging port 12 are connected with the operating chamber 13, and the first vacuum tube 3 is connected with the collecting chamber 14; an operating hole 16 is provided on the feeding box 1, and a rubber glove is fixedly provided in the feeding box 1. The rubber glove is located in the operating chamber 13, and the internal cavity of the rubber glove is connected with the operating hole 16. In this embodiment, a packaging bag containing materials is placed into the feeding box 1 from the feed port 11, and the packaging bag can be placed on the grid 15. The operator inserts his hands into the rubber gloves through the operating hole 16 and enters the operating cavity 13. The operator cuts the packaging bag so that the material in the packaging bag can fall from the grid 15 into the collecting cavity 14. After the material in the packaging bag is completely discharged, the packaging bag can be taken out from the discharge port 12; after the material falls into the collecting cavity 14, it can be transported from the first vacuum tube 3 to the conversion box 2.

[0022] Furthermore, the grid 15 is made of a plurality of parallel smooth round rods, which are fixed horizontally in the feeding box 1, and the packaging bags entering the feeding box 1 can slide horizontally along the round rods; at the same time, a blade is fixedly provided on the circumferential surface of the round rod, and during the sliding process of the packaging bag, the blade can cut the packaging bag, so that the material in the packaging bag can be quickly discharged from the packaging bag and fall into the collection cavity 14.

[0023] Furthermore, the material collection chamber 14 is a funnel-shaped structure, and the first vacuum tube 3 is connected to the lower end of the material collection chamber 14, which facilitates the complete discharge of materials from the material collection chamber 14; the material chamber 5 and the transfer chamber 6 of the conversion box 2 are also funnel-shaped structures, which can also facilitate the complete discharge of materials.

[0024] Furthermore, a dust removal fan 17 is provided on the top of the feeding box 1, and the dust removal fan 17 is connected to the operating chamber 13. The other end of the dust removal fan 17 is connected to a dust removal device, which can be a bag dust collector purchased on the market. When the bag is removed from the feeding box 1, the dust floats in the feeding box 1. In order to prevent the dust from floating out of the feeding box 1, the dust removal fan 17 can absorb the dust in the feeding box 1 and transport it to the bag dust collector for centralized dust removal.

[0025] Furthermore, if Figure 5 and Figure 6As shown, a filter element 18 is provided in the material chamber 5, and the filter element 18 is located above the first vacuum tube 3. The second vacuum tube 4 is connected to the side wall of the conversion box 2. The second vacuum tube 4 is located above the first vacuum tube 3. The filter element 18 is a cylindrical structure, and the filter element 18 can fit with the side wall of the conversion box 2. Therefore, during the loading process, the airflow can enter the conversion box 2 through the first vacuum tube 3, and then flow through the internal channel of the filter element 18 and pass through the filter element 18 for filtration, and finally be discharged from the second vacuum tube 4. When the airflow passes through the filter element 18, it can filter the dust in the airflow to avoid equipment blockage.

[0026] Furthermore, the conversion box 2 is also connected to a backblowing pipe 19, which is connected to the material chamber 5. One end of the backblowing pipe 19 is connected to the side wall of the material box 2, and the other end is connected to an air compressor, which can introduce high-pressure air into the backblowing pipe 19. A second valve 20 is provided on the backblowing pipe 19. The second valve 20 is a ball valve, which can control the on and off of the backblowing pipe 19. When the second valve 20 is opened, the high-pressure air of the air compressor can enter the conversion box 2 through the backblowing pipe 19 to backblow the filter element 18, thereby avoiding a reduction in the filtering effect of the filter element 18.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A solid powder feeding system, characterized in that: Including a feeding box (1); A conversion box (2) is connected to the feeding box (1) via a first vacuum tube (3); a second vacuum tube (4) is connected to the conversion box (2); a material chamber (5) and a transfer chamber (6) are provided inside the conversion box (2); a first valve (7) is provided between the material chamber (5) and the transfer chamber (6); the first vacuum tube (3) is communicated with the material chamber (5); a nitrogen tube (8) is further connected to the conversion box (2); and the nitrogen tube (8) is communicated with the transfer chamber (6); The reaction kettle (9) is connected to the conversion box (2) via a delivery pipe (10), and the delivery pipe (10) is connected to the transfer chamber (6).

2. A solid powder feeding system according to claim 1, characterized in that: The side wall of the feeding box (1) is provided with a feeding port (11) and a discharging port (12); an operating chamber (13) and a collecting chamber (14) are provided inside the feeding box (1); the operating chamber (13) and the collecting chamber (14) are communicated with each other; a grid (15) is fixedly provided on the operating chamber (13); the feeding port (11) and the discharging port (12) are communicated with the operating chamber (13); and the first vacuum tube (3) is communicated with the collecting chamber (14).

3. A solid powder feeding system according to claim 2, characterized in that: An operating hole (16) is provided on the feeding box (1), and a rubber glove is fixedly arranged in the feeding box (1). The rubber glove is located in the operating cavity (13), and the internal cavity of the rubber glove is connected to the operating hole (16).

4. A solid powder feeding system according to claim 2, characterized in that: The collecting cavity (14) is a funnel-shaped structure, and the first vacuum tube (3) is connected to the lower end of the collecting cavity (14).

5. A solid powder feeding system according to claim 2, characterized in that: A dust removal fan (17) is provided on the top of the feeding box (1), and the dust removal fan (17) is connected to the operating chamber (13).

6. A solid powder feeding system according to claim 1, characterized in that: A filter core (18) is provided in the material chamber (5), and the filter core (18) is located above the first vacuum tube (3).

7. A solid powder feeding system according to claim 6, characterized in that: The conversion box (2) is also connected to a backflush pipe (19), the backflush pipe (19) is in communication with the material chamber (5), and a second valve (20) is provided on the backflush pipe (19).

8. The solid powder feeding system according to claim 1, characterized in that: A third valve (21) is provided at the bottom of the conversion box (2).

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