A powder positive pressure feeding device

Abstract

The utility model relates to powder feeding technology field, the utility model provides a kind of powder positive pressure feeding device, including the storage tank with containing cavity, the storage tank bottom still has discharge gate;Second conveying pipeline is communicated with discharge gate, the axis of second conveying pipeline is perpendicular to the axis of storage tank, second conveying pipeline has the first pipe fitting and second pipe fitting arranged in turn, wherein, the pipe diameter of second pipe fitting is greater than the pipe diameter of first pipe fitting;Air source piece is arranged at one end of second conveying pipeline, and air source piece is used to supply positive pressure gas to second conveying pipeline. Through the above technical scheme, the flow rate of powder material can be changed when the powder material enters the conveying pipe with varying pipe diameter, the risk of material plugging in the pipe and the storage tank is reduced by the impact of different flow rates, and the conveying efficiency and device running stability of powder material are improved.

Description

Technical Field

[0001] This utility model relates to the field of powder feeding technology, specifically to a powder positive pressure feeding device. Background Technology

[0002] In many industrial sectors such as chemical, food, pharmaceutical, and metallurgical industries, it is frequently necessary to transport powdered materials, such as conveying raw materials to reactors or finished products to packaging equipment. Positive pressure feeding devices are a type of pneumatic conveying equipment. Pneumatic conveying utilizes the energy of airflow to transport granular materials along the airflow direction within a closed pipeline. Pneumatic conveying technology has advantages such as high conveying efficiency, long-distance transport capability, ease of automation control, and prevention of material contamination, and has been widely used in powder material conveying. Positive pressure pneumatic conveying is a major form of pneumatic conveying. It achieves material transport by applying positive pressure at the beginning of the pipeline, causing airflow to carry the powdered material within the pipeline. However, existing positive pressure feeding devices may experience blockages due to material accumulation in the pipeline or storage bin, affecting material transport efficiency. Therefore, there is an urgent need for a device that can effectively solve these problems to ensure smooth transport of powdered materials without blockages. Utility Model Content

[0003] To overcome the above-mentioned defects, this utility model provides a positive pressure powder feeding device, which solves the technical problem of blockage during powder material conveying in related technologies.

[0004] According to one aspect, at least one embodiment of the present invention provides a powder positive pressure feeding device, comprising:

[0005] A storage tank having a receiving cavity, and a discharge port at the bottom of the storage tank;

[0006] A second conveying pipe is connected to the discharge port. The axis of the second conveying pipe is perpendicular to the axis of the storage tank. The second conveying pipe has a first pipe fitting and a second pipe fitting arranged in sequence, wherein the diameter of the second pipe fitting is larger than the diameter of the first pipe fitting.

[0007] A gas source component is installed at one end of the second conveying pipeline, and the gas source component is used to supply positive pressure gas to the second conveying pipeline.

[0008] For example, at least one embodiment of the present invention provides a powder positive pressure feeding device, wherein the second conveying pipe further includes a connector, the connector having a large connection port and a small connection port, the small connection port being connected to the first pipe fitting, and the large connection port being connected to the second pipe fitting.

[0009] For example, at least one embodiment of the present invention provides a powder positive pressure feeding device, which further includes:

[0010] A first conveying pipe is disposed below the storage tank. The two ends of the first conveying pipe are respectively connected to the discharge port and the second conveying pipe. The axis of the first conveying pipe coincides with the axis of the storage tank.

[0011] For example, at least one embodiment of this utility model provides a powder positive pressure feeding device, wherein the first conveying pipe, the second conveying pipe and the air source component are connected by a T-junction.

[0012] For example, at least one embodiment of this utility model provides a powder positive pressure feeding device, wherein the three-way pipe has a horizontal pipe section and an inclined pipe section, the inclined pipe section is connected to the first conveying pipe, the inclined pipe section extends inclinedly along the powder material conveying direction, and the two ends of the horizontal pipe section are respectively connected to the second conveying pipe and the air source component.

[0013] For example, at least one embodiment of this utility model provides a powder positive pressure feeding device, wherein the bottom of the storage tank is conical and the cross-sectional area of ​​the cone decreases downward along the central axis of the storage tank.

[0014] For example, at least one embodiment of the present invention provides a powder positive pressure feeding device, which further includes:

[0015] A stirring element is rotatably disposed within the receiving cavity, the axis of rotation of the stirring element being coincident with the axis of the storage tank, and the stirring element is capable of stirring the powder material within the receiving cavity.

[0016] For example, at least one embodiment of the present invention provides a powder positive pressure feeding device, wherein the stirring member has a plurality of uniformly distributed stirring rods, and powder material can pass between the stirring rods.

[0017] For example, at least one embodiment of this utility model provides a powder positive pressure feeding device, wherein a control valve group is provided on the first conveying pipe, and the control valve group can control the amount of powder material entering the storage tank into the first conveying pipe.

[0018] For example, at least one embodiment of the present invention provides a powder positive pressure feeding device, wherein a manual valve is also provided on the first conveying pipe, and the manual valve is located between the control valve group and the discharge port.

[0019] The beneficial effects of the embodiments of this utility model are as follows:

[0020] In this invention, the discharge port at the bottom of the storage tank is connected to the second conveying pipe, changing the material conveying direction and preventing material accumulation at the bottom of the storage tank. The difference in diameter between the first and second pipe fittings in the second conveying pipe reduces the airflow velocity when material enters the larger-diameter second fitting, minimizing material buildup caused by excessive airflow impacting the pipe wall and reducing pipe wear. When the airflow passes through the smaller-diameter first fitting, the increased gas velocity facilitates powder material transport and accelerates powder flow, preventing blockages. A stable positive-pressure gas source provides stable gas pressure, ensuring continuous material transport within the pipe. The coordinated structures of all components form an effective conveying path, reducing the risk of blockages in the pipes and storage tank, and improving the conveying efficiency and operational stability of the device. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this utility model and these drawings without any creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of a powder positive pressure feeding device in one embodiment of the present invention;

[0023] Figure 2 This is a side view of a powder positive pressure feeding device according to the present invention;

[0024] Figure 3 This is a schematic diagram of the three-way pipe in this utility model.

[0025] In the diagram: 1. Storage tank, 101. Receiving cavity, 102. Discharge port, 2. Second conveying pipe, 201. First pipe fitting, 202. Second pipe fitting, 203. Connector, 3. Air source component, 4. Agitator component, 401. Agitator rod, 5. First conveying pipe, 6. T-pipe, 601. Horizontal pipe section, 602. Inclined pipe section, 7. Control valve assembly, 8. Manual valve. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit its scope.

[0027] To keep the drawings concise, only the parts relevant to the utility model are shown schematically in each drawing; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of the components with the same structure or function is schematically shown, or only one is labeled. In this document, "a" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0028] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0030] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0031] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0032] like Figures 1-3As shown, this invention illustrates a powder positive pressure feeding device according to one embodiment. The storage tank 1 is vertically arranged, with an internal cavity 101 for storing powder materials and a discharge port 102 at the bottom serving as a material output channel. A second conveying pipe 2 is horizontally arranged and connected to the discharge port 102. The second conveying pipe 2 is composed of a first fitting 201 and a second fitting 202 connected sequentially, with the diameter of the first fitting 201 being smaller than that of the second fitting 202. An air source component 3 is installed at one end of the second conveying pipe 2 to supply positive pressure gas into it. When the device is operating, the powder materials in the storage tank 1 enter the first fitting 201 of the second conveying pipe 2 from the discharge port 102. The positive pressure gas generated by the air source component 3 propels the material within the pipe. Due to the increased diameter of the second fitting 202, the airflow velocity decreases, reducing material accumulation within the pipe and allowing the material to be smoothly conveyed to the designated location.

[0033] Specifically, the discharge port 102 at the bottom of the storage tank 1 is connected to the second conveying pipe 2, changing the material conveying direction and preventing material accumulation at the bottom of the storage tank 1. The difference in pipe diameter between the first fitting 201 and the second fitting 202 in the second conveying pipe 2 reduces the airflow velocity when material enters the larger-diameter second fitting 202, minimizing material accumulation caused by excessive airflow impacting the pipe wall and reducing pipe wear. When the airflow passes through the smaller-diameter first fitting 201, the gas velocity increases, facilitating powder material transport and accelerating powder flow to prevent blockages. Multiple sets of the first and second fittings 201 and 202 can be sequentially installed according to the conveying distance to achieve powder material transport over different distances. The gas source 3 provides stable positive pressure gas to ensure continuous material transport within the pipe. The coordinated structure of each component forms an effective conveying path, reducing the risk of material blockage in the pipe and storage tank 1, and improving the powder material conveying efficiency and device operational stability.

[0034] like Figures 1-3As shown, the first fitting 201 and the second fitting 202 of the second conveying pipe 2 are connected by a connector 203. The small connector of the connector 203 connects to the first fitting 201, and the large connector connects to the second fitting 202. A first conveying pipe 5 is installed below the storage tank 1, with its axis coinciding with the axis of the storage tank 1. Its two ends are connected to the outlet 102 of the storage tank 1 and the second conveying pipe 2, respectively. The first conveying pipe 5, the second conveying pipe 2, and the air source component 3 are connected by a tee pipe 6. The horizontal section 601 of the tee pipe 6 connects to the second conveying pipe 2 and the air source component 3 at both ends, respectively. The inclined section 602 connects to the first conveying pipe 5 and extends inclinedly along the material conveying direction. During operation, the material in the storage tank 1 enters the first conveying pipe 5 through the outlet 102, enters the first fitting 201 of the second conveying pipe 2 through the inclined section 602 of the tee pipe 6, transitions to the second fitting 202 via the connector 203, and is conveyed under the positive pressure of the air source component 3.

[0035] Specifically, connector 203 achieves a smooth transition between the first pipe fitting 201 and the second pipe fitting 202, avoiding material accumulation caused by abrupt changes in pipe diameter and reducing conveying resistance. Connector 203 is preferably an eccentric reducer, ensuring the bottoms of the first and second pipe fittings 201 and 202 are flush, further reducing material accumulation and effectively preventing blockages. The first conveying pipe 5 is coaxially aligned with the storage tank 1, allowing material to fall vertically under gravity, reducing the probability of accumulation at the bottom of the storage tank 1 and the pipe inlet. The inclined section 602 of the tee pipe 6 guides material smoothly into the second conveying pipe 2, reducing impact between material and pipe. Combined with the positive pressure gas introduced by the horizontal section 601, a continuous and stable conveying flow field is formed, further improving the smoothness of conveying.

[0036] like Figure 1 As shown, a stirring element 4 is installed inside the storage tank 1, with its rotation axis coinciding with the axis of the storage tank 1. Several stirring rods 401 are distributed on the stirring element 4, with gaps between the stirring rods 401 to allow material to pass through. During operation, the stirring element 4 rotates with the drive device, and the stirring rods 401 stir the material in the storage tank 1, keeping the material in a loose state, allowing it to enter the subsequent pipeline through the discharge port 102. The rotation of the stirring element 4 prevents the material in the storage tank 1 from clumping, keeping it loose and facilitating smooth discharge from the discharge port 102, reducing blockage at the bottom of the storage tank 1 caused by material clumping. The gaps between the stirring rods 401 allow material to pass through without obstructing its fall. Simultaneously, continuous stirring ensures that the material is evenly distributed within the storage tank 1, preventing localized accumulation. Combined with the conveying path of the first conveying pipeline 5, this improves the overall conveying efficiency.

[0037] like Figure 2As shown, the bottom of the storage tank 1 is conical, with the cross-sectional area gradually decreasing downwards along the central axis, forming a discharge port 102 at the bottom end. Material slides down the inclined surface of the conical bottom inside the storage tank 1 and enters the first conveying pipe 5 through the discharge port 102. The conical bottom structure causes the material to gather towards the discharge port 102 under gravity, reducing residue and accumulation at the bottom of the storage tank 1. Combined with the vertical conveying path of the first conveying pipe 5, this accelerates the speed at which material enters subsequent pipes. In conjunction with the action of the agitator 4, this further reduces the possibility of blockage within the storage tank 1.

[0038] like Figures 1-2 As shown, a control valve assembly 7 and a manual valve 8 are installed on the first conveying pipeline 5. The manual valve 8 is located between the control valve assembly 7 and the discharge port 102 of the storage tank 1. During operation, the manual valve 8 controls the opening and closing of the first conveying pipeline 5, while the control valve assembly 7 regulates the amount of material entering the pipeline. The control valve assembly 7 achieves precise control of the material conveying volume, avoiding pipeline blockage due to excessive material or reduced conveying efficiency due to insufficient material. The manual valve 8 serves as a backup control component, cutting off material conveying in case of a failure of the control valve assembly 7, facilitating equipment maintenance. Furthermore, it works in conjunction with the control valve assembly 7 to form a dual control mechanism, enhancing the reliability of the device operation.

[0039] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A powder positive pressure feeding device, characterized in that, include: The storage tank (1) has a receiving cavity (101) and the bottom of the storage tank (1) also has a discharge port (102). The second conveying pipe (2) is connected to the discharge port (102). The axis of the second conveying pipe (2) is perpendicular to the axis of the storage tank (1). The second conveying pipe (2) has a first pipe fitting (201) and a second pipe fitting (202) arranged in sequence. The diameter of the second pipe fitting (202) is larger than the diameter of the first pipe fitting (201). A gas source component (3) is installed at one end of the second conveying pipe (2), and the gas source component (3) is used to supply positive pressure gas to the second conveying pipe (2).

2. The powder positive pressure feeding device according to claim 1, characterized in that, The second conveying pipe (2) also includes a connector (203), which has a large connection port and a small connection port. The small connection port is connected to the first pipe fitting (201), and the large connection port is connected to the second pipe fitting (202).

3. The powder positive pressure feeding device according to claim 1, characterized in that, Also includes: The first conveying pipe (5) is located below the storage tank (1). The two ends of the first conveying pipe (5) are connected to the discharge port (102) and the second conveying pipe (2) respectively. The axis of the first conveying pipe (5) coincides with the axis of the storage tank (1).

4. The powder positive pressure feeding device according to claim 3, characterized in that, The first conveying pipe (5), the second conveying pipe (2) and the gas source component (3) are connected by a three-way pipe (6).

5. A powder positive pressure feeding device according to claim 4, characterized in that, The three-way pipe (6) has a horizontal pipe section (601) and an inclined pipe section (602). The inclined pipe section (602) is connected to the first conveying pipe (5). The inclined pipe section (602) extends inclinedly along the powder material conveying direction. The two ends of the horizontal pipe section (601) are respectively connected to the second conveying pipe (2) and the air source component (3).

6. The powder positive pressure feeding device according to claim 1, characterized in that, Also includes: A stirring element (4) is rotatably disposed in the receiving cavity (101). The rotation axis of the stirring element (4) coincides with the axis of the storage tank (1). The stirring element (4) is capable of stirring the powder material in the receiving cavity (101).

7. A powder positive pressure feeding device according to claim 6, characterized in that, The stirring component (4) has a plurality of uniformly distributed stirring rods (401), and powder material can pass between the stirring rods (401).

8. The powder positive pressure feeding device according to claim 1, characterized in that, The bottom of the storage tank (1) is conical, and the cross-sectional area of ​​the cone decreases downward along the central axis of the storage tank (1).

9. A powder positive pressure feeding device according to claim 5, characterized in that, A control valve group (7) is provided on the first conveying pipe (5), and the control valve group (7) can control the amount of powder material entering the first conveying pipe (5) from the storage tank (1).

10. A powder positive pressure feeding device according to claim 9, characterized in that, The first conveying pipe (5) is also equipped with a manual valve (8), which is located between the control valve group (7) and the discharge port (102).

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