Isolation type powder adding system

Abstract

The utility model discloses an isolation type powder adding system, which relates to the technical field of powder adding and comprises a first stock bin, a feeding hopper is arranged at the upper end of the first stock bin, a feeding valve is arranged between the feeding hopper and the first stock bin, and the lower end of the first stock bin is hermetically connected with a second stock bin. A discharging valve is arranged between the first stock bin and the second stock bin, the lower end of the second stock bin is connected with a spiral conveyor in a sealed mode, a motor used for driving the spiral conveyor is fixedly installed at one end of the spiral conveyor, and the other end of the spiral conveyor is connected with end equipment in a sealed mode. The device has the beneficial effects that the two stock bins are arranged in an isolated mode, and air pressure regulation and control design is adopted, so that external air is effectively isolated, and the purity of powder is ensured; due to the application of the vacuum system, the cleanliness of the interior of the system is further improved, and stable working conditions of powder receiving equipment are guaranteed; the system is easy to operate, convenient to maintain and suitable for various industrial applications needing high-precision powder adding.

Description

Technical Field

[0001] The utility model relates to the technical field of powder addition, in particular to an isolated powder addition system. Background Art

[0002] In specific industrial applications, such as precision chemical engineering, high-end material manufacturing, etc., powders need to maintain strict purity during the addition process to avoid the influence of external air, impurities or moisture on the working conditions of the powder receiving equipment. Traditional powder addition systems often have difficulty in completely isolating external air, resulting in unstable working conditions of the powder receiving equipment. Therefore, it is particularly important to develop an isolated powder addition system that can effectively isolate external air. Summary of the Utility Model

[0003] The purpose of the utility model is to provide an isolated powder addition system, which can effectively isolate external air during the powder addition process, ensure the purity of the powder, and at the same time maintain the stable working conditions of the powder receiving equipment.

[0004] The utility model realizes the above purpose through the following technical solutions:

[0005] An isolated powder addition system includes a first bin. A feeding hopper is arranged at the upper end of the first bin, and a feeding valve is arranged between the feeding hopper and the first bin. The lower end of the first bin is hermetically connected to a second bin, and a discharging valve is arranged between the first bin and the second bin. The lower end of the second bin is hermetically connected to a screw conveyor. One end of the screw conveyor is fixedly installed with a motor for driving the screw conveyor, and the other end is hermetically connected to an end device. A ventilation pipe for connecting supplementary gas is arranged at the upper part of the first bin, and an air supplement valve is arranged on the ventilation pipe. A vacuum pump is hermetically connected to the upper part of the first bin, and a vacuum valve is arranged between the vacuum pump and the first bin.

[0006] Preferably, the end of the ventilation pipe far from the first bin is hermetically connected to an external gas supply device, and the external gas supply device provides the same gas as that in the end device.

[0007] Preferably, a first pressure gauge and a second pressure gauge are hermetically installed on the first bin and the second bin respectively.

[0008] Preferably, the first bin, the second bin and the housing of the screw conveyor are all made of transparent glass.

[0009] Preferably, the end of the ventilation pipe far from the first bin is hermetically connected to the end device.

[0010] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0011] Through the design of isolating two silos and regulating air pressure, external air is effectively isolated to ensure the purity of the powder.

[0012] The application of the vacuum system further improves the cleanliness inside the system and ensures the stable working conditions of the powder receiving equipment.

[0013] The system is easy to operate and maintain, and is suitable for various industrial applications that require high-precision powder addition. Description of the Drawings

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0015] Figure 1 It is a schematic structural diagram of Embodiment 2 of an isolation type powder adding system described in the present invention.

[0016] The description of the reference numerals in the drawings is as follows:

[0017] 1. Feeding hopper; 2. Feeding valve; 3. First pressure gauge; 4. First silo; 5. Vent pipe; 6. Discharge valve; 7. Second pressure gauge; 8. Second silo; 9. Motor; 10. Screw conveyor; 11. End equipment; 12. Air make-up valve; 13. Vacuum pump; 14. Vacuum valve. Detailed Embodiments

[0018] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "plurality" is two or more.

[0019] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0020] The present utility model will be further described below with reference to the accompanying drawings: Embodiment 1

[0021] An isolation type powder adding system includes a first bin 4. A feeding hopper 1 is arranged at the upper end of the first bin 4. A feeding valve 2 is arranged between the feeding hopper 1 and the first bin 4. The lower end of the first bin 4 is hermetically connected to a second bin 8. A discharging valve 6 is arranged between the first bin 4 and the second bin 8. The lower end of the second bin 8 is hermetically connected to a screw conveyor 10. The second bin 8 and the glass screw form a complete closed structure and are connected to a terminal device 11. One end of the screw conveyor 10 is fixedly installed with a motor 9 for driving the screw conveyor 10, and the other end is hermetically connected to the terminal device 11. A ventilation pipe 5 for connecting supplementary gas is arranged at the upper part of the first bin 4. One end of the ventilation pipe 5 away from the first bin 4 is hermetically connected to an external gas supply device. The external gas supply device provides the same gas as that inside the terminal device 11. A gas supplementing valve 12 is arranged on the ventilation pipe 5. A vacuum pump 13 is hermetically connected to the upper part of the first bin 4. A vacuum valve 14 is arranged between the vacuum pump 13 and the first bin 4. First pressure gauges 3 and second pressure gauges 7 are hermetically installed on the first bin 4 and the second bin 8 respectively. The shells of the first bin 4, the second bin 8, and the screw conveyor 10 are all made of transparent glass. The first bin 4 and the second bin 8 are in a transparent state so that the remaining material level in the bins can be observed in time for replenishment.

[0022] Working principle: During operation, the discharging valve 6 is closed to keep the second bin 8 and the first bin 4 isolated. When feeding the first bin 4, the feeding valve 2 is opened to add powder from the feeding hopper 1, and then the feeding valve 2 is closed. Next, after closing the gas supplementing valve 12, the vacuum valve 14 is opened and the vacuum pump 13 is started to exhaust the air in the first bin 4. By observing the first pressure gauge 3, after the vacuum degree of the first bin 4 reaches the required value, the vacuum valve 14 is closed and the gas supplementing valve 12 is slowly opened to supplement gas with the same characteristics as that in the terminal device 11. When the pressure of the first bin 4 returns to the same as that of the second bin 8, the gas supplementing valve 12 is closed to complete the gas conversion. Then the discharging valve 6 is opened to let the powder fall into the second bin 8. After closing the discharging valve 6, the motor 9 is started to drive the screw conveyor 10 to work and send the powder into the terminal device 11, completing one feeding process and waiting for the next feeding. Embodiment 2

[0023] As Figure 1 shown, the difference between this embodiment and Embodiment 1 is that one end of the ventilation pipe 5 far from the first bin 4 is hermetically connected to the terminal device 11. After the vacuum degree of the first bin 4 reaches, the vacuum valve 14 is closed and the air inlet valve 12 is slowly opened, and the gas in the terminal device 11 replenishes into the first bin 4 to ensure the consistency of the gas environment during the powder adding process.

[0024] The feeding valve 2, the first pressure gauge 3, the first bin 4, the discharging valve 6, the second pressure gauge 7, the motor 9, the screw conveyor 10, the terminal device 11, the air inlet valve 12, the vacuum pump 13, and the vacuum valve 14 are all general standard parts or components known to those skilled in the art. Their structures and principles can be known to those skilled in the art through technical manuals or obtained through conventional experimental methods, so no more records will be made here.

[0025] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. An isolated powder adding system, comprising a first silo (4), characterized in that: A feeding hopper (1) is arranged at the upper end of the first material bin (4), a feeding valve (2) is arranged between the feeding hopper (1) and the first material bin (4), a second material bin (8) is sealed at the lower end of the first material bin (4), a discharge valve (6) is arranged between the first material bin (4) and the second material bin (8), a screw conveyor (10) is sealed at the lower end of the second material bin (8), a motor (9) for driving the screw conveyor (10) is fixedly mounted at one end of the screw conveyor (10), and a terminal device (11) is sealed at the other end, a vent pipe (5) for connecting to supplementary gas is arranged at the upper part of the first material bin (4), a gas supplementation valve (12) is arranged on the vent pipe (5), a vacuum pump (13) is sealed at the upper part of the first material bin (4), and a vacuum valve (14) is arranged between the vacuum pump (13) and the first material bin (4).

2. The isolated powder adding system according to claim 1, characterized in that: One end of the ventilation pipe (5) away from the first silo (4) is sealed and connected to an external gas supply device, and the external gas supply device provides the same gas as that in the terminal device (11).

3. The isolated powder adding system according to claim 1, characterized in that: A first pressure gauge (3) and a second pressure gauge (7) are respectively installed in a sealed manner on the first material bin (4) and the second material bin (8).

4. The isolated powder adding system according to claim 1, characterized in that: The first material bin (4), the second material bin (8) and the casing of the screw conveyor (10) are all made of transparent glass.

5. The isolated powder adding system according to claim 1, characterized in that: One end of the ventilation pipe (5) away from the first silo (4) is sealed and connected to the terminal device (11).

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