A powder conveying acceleration chamber

Abstract

This utility model relates to a powder conveying acceleration chamber, including an acceleration chamber body and a negative pressure device. The acceleration chamber body includes a feed inlet, a nitrogen inlet, and a discharge outlet. The feed inlet is used for material entry, and the nitrogen inlet is used for nitrogen entry. The negative pressure device is installed inside the acceleration chamber body and includes a negative pressure outlet aligned with the discharge outlet. The negative pressure device creates negative pressure within the acceleration chamber body. This technical solution, by installing a negative pressure device within the acceleration chamber body, allows material above the acceleration chamber body to flow out quickly through the discharge outlet, preventing upward movement, resulting in more stable pipeline pressure and improved conveying capacity.

Description

Technical Field

[0001] This utility model relates to the field of powder conveying, and in particular to a powder conveying acceleration chamber. Background Technology

[0002] Negative pressure pipeline conveying is an important conveying mode for powder materials. Usually, an acceleration chamber is equipped at the front end of the pipeline to mix the powder materials into negative pressure air, and use the negative pressure air as a carrier to achieve the purpose of conveying the powder materials.

[0003] Existing acceleration chambers cannot effectively create negative pressure within the chamber due to the dispersion of velocity flow and poor stability. This causes gas to rise during the conveying process of powder, resulting in unstable pipeline pressure and reduced conveying capacity. Utility Model Content

[0004] Therefore, there is a need to provide a powder conveying acceleration chamber to solve the technical problem that existing acceleration chambers cannot effectively form negative pressure in the chamber due to the dispersion of velocity flow and poor stability, which leads to gas rising in the powder during the conveying process, unstable pipeline pressure, and reduced conveying capacity.

[0005] To achieve the above objectives, this utility model provides a powder conveying acceleration chamber, comprising:

[0006] The accelerator chamber body includes a feed inlet, an air inlet, and a discharge outlet. The feed inlet is used to allow material to enter, and the nitrogen air inlet is used to allow nitrogen to enter.

[0007] The negative pressure device is installed inside the acceleration chamber. The negative pressure device includes a negative pressure outlet, which is aligned with the discharge port. The negative pressure device creates negative pressure inside the acceleration chamber.

[0008] Unlike existing technologies, the above-mentioned technical solution has a negative pressure device installed inside the acceleration chamber. The negative pressure device can create negative pressure inside the acceleration chamber, which allows the material above the acceleration chamber to flow out quickly through the discharge port, preventing it from rising upwards. This makes the pipeline pressure more stable and improves the conveying capacity.

[0009] As one embodiment of the present invention, the negative pressure device includes a pressurization chamber and a nozzle. The pressurization chamber includes a first air inlet and a first air outlet, and the nozzle includes a negative pressure air inlet and a negative pressure air outlet. The first air inlet is connected to a nitrogen air inlet, and the first air outlet is connected to the negative pressure air inlet.

[0010] In this way, by using the nitrogen gas in the acceleration chamber itself, the pressurization chamber can pressurize the nitrogen gas, and the speed of the nitrogen gas increases sharply, forming a negative pressure area around the pressurization chamber. This prevents the gas from rising during the conveying process of the powder. The material inside the acceleration chamber is carried away by the instantaneous release of the nozzle and the inertia of fluid mechanics (when compressed air at normal pressure enters the contraction section, the flow velocity rises sharply, and a negative pressure is formed around the outside of the corresponding pipe).

[0011] In one embodiment of this utility model, the diameter of the first air outlet gradually decreases from the direction away from the nozzle to the direction closer to the nozzle.

[0012] Thus, the diameter of the pipe at the first outlet gradually decreases from the direction away from the nozzle to the direction closer to the nozzle, thereby forming a constriction section, further increasing the velocity of nitrogen and strengthening the negative pressure, which can more quickly remove the material in the acceleration chamber.

[0013] As one embodiment of this utility model, the negative pressure device also includes a vacuum pump, a gas ejector, or a Roots blower.

[0014] Thus, vacuum pumps, gas ejectors, or Roots blowers are existing negative pressure devices. Vacuum pumps offer high vacuum levels, gas ejectors are corrosion-resistant and explosion-proof, and Roots blowers have large air volume and simple structure.

[0015] As one embodiment of this utility model, the powder conveying acceleration chamber also includes a flow regulating device, which is installed at the bottom of the acceleration chamber body. The flow regulating device delivers gas into the acceleration chamber body to increase the airflow disturbance at the bottom of the acceleration chamber body.

[0016] In this way, the flow regulating device can deliver gas into the acceleration chamber body. Since the gas flow direction of the flow regulating device is different from that of the gas flow direction in the internal channel of the acceleration chamber body, it can increase the airflow disturbance at the bottom of the acceleration chamber body, prevent excessive material accumulation in the acceleration chamber body, and allow the negative pressure air to continue to carry away the powder through the discharge port, avoiding material blockage in the acceleration chamber body and further improving the conveying efficiency.

[0017] As one embodiment of this utility model, the flow regulating device is a flow regulating pipe arranged along the axial direction of the acceleration chamber body, and the flow regulating pipe has two or more air outlets evenly distributed along the axial direction of the acceleration chamber body.

[0018] Thus, the simple structure and easy installation of the flow regulating pipe, coupled with the fact that the air outlet is positioned differently from the gas flow direction inside the accelerator chamber, increases airflow disturbance at the bottom of the accelerator chamber.

[0019] As one embodiment of this utility model, the powder conveying acceleration chamber also includes a mounting bracket, on which a negative pressure device is fixedly mounted.

[0020] Thus, the negative pressure device is fixedly installed inside the acceleration chamber by mounting brackets. Optionally, the entire negative pressure device is arranged along the axial direction of the acceleration chamber body so that the negative pressure outlet is directly aligned with the discharge port.

[0021] As one embodiment of this utility model, the powder conveying acceleration chamber also includes a movable flange, which is installed at the feed inlet and is used to install external pipes.

[0022] In this way, external pipes can be installed via movable flanges, making installation and disassembly convenient.

[0023] As one embodiment of this utility model, the powder conveying acceleration chamber also includes a filter dust cover, which is installed at the nitrogen inlet and filters the air drawn into the acceleration chamber body.

[0024] In this way, the purity of the gas in the negative pressure zone can be maintained by using a filter dust cover, thus protecting the equipment.

[0025] As one embodiment of this utility model, the powder conveying acceleration chamber also includes a control valve, which is installed between the filter dust cover and the acceleration chamber body.

[0026] In this way, the control valve can adjust the airflow into the acceleration chamber body according to the actual situation.

[0027] The above description of the utility model is merely an overview of the technical solution of this application. In order to enable those skilled in the art to better understand the technical solution of this application and to implement it based on the description and drawings, and to make the above-mentioned objectives and other objectives, features and advantages of this application easier to understand, the following description is provided in conjunction with the specific embodiments and drawings of this application. Attached Figure Description

[0028] The accompanying drawings are only used to illustrate the principles, implementation methods, applications, features, and effects of specific embodiments of this application and other related content, and should not be considered as limitations on this application.

[0029] In the accompanying drawings of the instruction manual:

[0030] Figure 1 This is a schematic diagram of the structure of a powder conveying acceleration chamber according to an embodiment of this application. Figure 1 ;

[0031] Figure 2 for Figure 1 Enlarged view of A in the middle;

[0032] Figure 3 This is a schematic diagram of the structure of a powder conveying acceleration chamber according to an embodiment of this application. Figure 2 ;

[0033] Figure 4 This is a schematic diagram of the structure of a powder conveying acceleration chamber according to an embodiment of this application. Figure 3 ;

[0034] Figure 5 This is a schematic diagram of the structure of a powder conveying acceleration chamber according to an embodiment of this application. Figure 4 .

[0035] The reference numerals used in the above figures are explained as follows:

[0036] 100-Powder conveying acceleration chamber; 200-Material; 1-Acceleration chamber body; 11-Inlet; 12-Nitrogen inlet; 13-Outlet; 2-Negative pressure device; 21-Pressure chamber; 211-First air inlet; 212-First air outlet; 22-Nozzle; 221-Negative pressure inlet; 222-Negative pressure outlet; 3-Flow regulating device; 31-Flow regulating pipe; 311-Air outlet; 4-Mounting bracket; 5-Movable flange; 6-Filter dust cover; 7-Control valve; X-Axial direction of the acceleration chamber body. Detailed Implementation

[0037] To illustrate the possible application scenarios, technical principles, implementable specific solutions, and achievable objectives and effects of this application in detail, the following description, in conjunction with the listed specific embodiments and accompanying drawings, provides a detailed explanation. The embodiments described herein are merely illustrative of the technical solutions of this application and are therefore intended to limit the scope of protection of this application.

[0038] In this document, the term "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this application, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0039] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit this application.

[0040] In the description of this application, the term "and / or" is used to describe the logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and A and B exist simultaneously. Additionally, the character " / " in this document generally indicates that the preceding and following objects have an "or" logical relationship.

[0041] In this application, terms such as “first” and “second” are used only to distinguish one entity or operation from another, and do not necessarily require or imply any actual quantity, hierarchy or order relationship between these entities or operations.

[0042] Without further limitations, the use of terms such as “comprising,” “including,” “having,” or other similar open-ended expressions in this application is intended to cover non-exclusive inclusion, which does not exclude the presence of additional elements in a process, method, or product that includes the stated elements, such that a process, method, or product that includes a list of elements may include not only those defined elements but also other elements not expressly listed, or elements inherent to such a process, method, or product.

[0043] Similar to the understanding in the Examination Guidelines, in this application, expressions such as "greater than," "less than," and "exceeding" are understood to exclude the stated number; expressions such as "above," "below," and "within" are understood to include the stated number. Furthermore, in the description of the embodiments in this application, "multiple" means two or more (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups" and "multiple times," unless otherwise explicitly specified.

[0044] In the description of the embodiments of this application, the space-related expressions used, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or drawings. They are only for the purpose of describing the specific embodiments of this application or for the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0045] Unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," "fixing," and "setting," as used in the description of the embodiments of this application, should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral arrangement; it can be a direct connection or an indirect connection through an intermediate medium; it can be a relationship of two components combined together, an interaction relationship between two components, or a connection within two structures. Those skilled in the art to which this application pertains can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0046] Existing acceleration chambers cannot effectively create negative pressure within the chamber due to the dispersion of velocity flow and poor stability. This causes gas to rise during the conveying process of powder, resulting in unstable pipeline pressure and reduced conveying capacity.

[0047] In view of this, this application provides a powder conveying acceleration chamber 100, including an acceleration chamber body 1 and a negative pressure device 2. The acceleration chamber body 1 includes a feed inlet 11, an air inlet, and a discharge outlet 13. The feed inlet 11 is used to allow material 200 to enter, and the nitrogen air inlet 12 is used to allow nitrogen to enter. The negative pressure device 2 is installed inside the acceleration chamber body 1. The negative pressure device 2 includes a negative pressure air outlet 222, which is aligned with the discharge outlet 13. The negative pressure device 2 creates a negative pressure inside the acceleration chamber body 1.

[0048] According to some embodiments of this application, please refer to Figures 1 to 5 This embodiment relates to a powder conveying acceleration chamber 100, including an acceleration chamber body 1 and a negative pressure device 2. The acceleration chamber body 1 includes a feed inlet 11, a nitrogen inlet 12 and a discharge outlet 13. The feed inlet 11 is used to supply material 200, and the nitrogen inlet 12 is used to supply nitrogen. The negative pressure device 2 is installed inside the acceleration chamber body 1 and includes a negative pressure outlet 222. The negative pressure outlet 222 is aligned with the discharge outlet 13, and the negative pressure device 2 forms a negative pressure inside the acceleration chamber body 1.

[0049] The acceleration chamber body 1 is a pipe structure. The side wall of the acceleration chamber body 1 is provided with a feeding channel for adding powder. The feeding channel has a feed port 11, a nitrogen inlet 12 for introducing nitrogen, and a discharge port 13 for discharging material 200.

[0050] The above technical solution includes a negative pressure device 2 installed inside the acceleration chamber body 1. The negative pressure device 2 can create negative pressure inside the acceleration chamber body 1, thereby allowing the material 200 above the acceleration chamber body 1 to flow out quickly through the discharge port 13, preventing it from rising upwards, making the pipeline pressure more stable and improving the conveying capacity.

[0051] like Figure 1 As shown, the negative pressure device 2 includes a pressurization chamber 21 and a nozzle 22. The pressurization chamber 21 includes a first air inlet 211 and a first air outlet 212. The nozzle 22 includes a negative pressure air inlet 221 and a negative pressure air outlet 222. The first air inlet 211 is connected to the nitrogen air inlet 12, and the first air outlet 212 is connected to the negative pressure air inlet 221.

[0052] Optionally, the first air inlet 211 can be directly aligned with the nitrogen inlet 12, so that nitrogen can directly enter the pressurization chamber 21.

[0053] Thus, by using the nitrogen gas in the acceleration chamber itself, the pressurization chamber 21 can pressurize the nitrogen gas, and the speed of the nitrogen gas increases sharply, forming a negative pressure area around the pressurization chamber 21. This prevents the gas from rising during the conveying process of the powder. The material 200 in the acceleration chamber body 1 is carried away by the instantaneous release of the nozzle 22 and the inertia of fluid mechanics (when compressed air at normal pressure enters the contraction section, the flow velocity rises sharply, and a negative pressure is formed around the outside of the corresponding pipe).

[0054] like Figure 2 As shown, the diameter of the first air outlet 212 gradually decreases from the direction away from the nozzle 22 to the direction closer to the nozzle 22.

[0055] Thus, the diameter of the first outlet 212 gradually decreases from the direction away from the nozzle 22 to the direction closer to the nozzle 22, thereby forming a contraction section, further increasing the speed of nitrogen gas and strengthening the negative pressure, so as to carry away the material 200 in the acceleration chamber body 1 more quickly.

[0056] According to some embodiments of this application, the negative pressure device 2 may optionally include a vacuum pump, a gas ejector, or a Roots blower.

[0057] Thus, a vacuum pump, a gas ejector, or a Roots blower are the existing negative pressure devices 2. The vacuum pump has a high vacuum degree, the gas ejector is corrosion-resistant and explosion-proof, and the Roots blower has a large air volume and a simple structure.

[0058] like Figures 3 to 5 As shown, the powder conveying acceleration chamber 100 also includes a flow regulating device 3, which is installed at the bottom of the acceleration chamber body 1. The flow regulating device 3 delivers gas into the acceleration chamber body 1 to increase the airflow disturbance at the bottom of the acceleration chamber body 1.

[0059] The positions of the flow regulating device 3 and the negative pressure device 2 do not conflict. The flow regulating device 3 is located on one side of the negative pressure device 2, meaning that nitrogen can be pressurized by the negative pressure device 2 and then flow regulated by the flow regulating device 3.

[0060] In this way, the flow regulating device 3 can deliver gas into the acceleration chamber body 1. Since the gas flow direction of the flow regulating device 3 is different from that of the gas flow direction in the internal channel of the acceleration chamber body 1, the airflow disturbance at the bottom of the acceleration chamber body 1 can be increased, preventing the material 200 in the acceleration chamber body 1 from accumulating too much. This allows the negative pressure air to continue to carry away the powder through the discharge port 13, avoiding blockage of the material 200 in the acceleration chamber body 1 and further improving the conveying efficiency.

[0061] like Figure 3 As shown, the flow regulating device 3 is a flow regulating pipe 31 arranged along the axial X direction of the acceleration chamber body. The flow regulating pipe 31 has two or more air outlets 311 evenly distributed along the axial X direction of the acceleration chamber body.

[0062] Optionally, the cross-section of the flow regulating pipe 31 can be triangular, rectangular, or arc-shaped, etc. Its shape can be adapted to actual needs.

[0063] Thus, the flow regulating pipe 31 has a simple structure and is easy to install. The air outlet 311 is set in a different direction from the gas flow direction of the internal channel of the acceleration chamber body 1, which increases the airflow disturbance at the bottom of the acceleration chamber body 1.

[0064] like Figure 1 As shown, the powder conveying acceleration chamber 100 also includes a mounting bracket 4, which is used to fix the negative pressure device 2.

[0065] Mounting bracket 4 is installed inside the acceleration chamber body 1. Thus, the negative pressure device 2 is fixedly installed inside the acceleration chamber body 1 by mounting bracket 4. Optionally, the negative pressure device 2 is arranged along the axial direction (X) of the acceleration chamber body so that the negative pressure outlet 222 is directly aligned with the discharge port 13.

[0066] like Figure 1 As shown, the powder conveying acceleration chamber 100 also includes a movable flange 5, which is installed at the feed inlet 11 and is used to install external pipes.

[0067] Thus, external pipes can be installed via the movable flange 5, facilitating installation and disassembly.

[0068] like Figure 4 and Figure 5 As shown, the powder conveying acceleration chamber 100 also includes a filter dust cover 6, which is installed at the nitrogen inlet 12 and filters the air drawn into the acceleration chamber body 1.

[0069] In this way, the purity of the gas in the negative pressure zone can be maintained by the filter dust cover 6, thus protecting the equipment.

[0070] like Figure 5 As shown, the powder conveying acceleration chamber 100 also includes a control valve 7, which is installed between the filter dust cover 6 and the acceleration chamber body 1.

[0071] Control valve 7 can be a manual valve or an electric valve. Specifically, a manual butterfly valve can be selected, which has the functions of easy operation, rapid and good flow regulation and sealing performance.

[0072] Thus, control valve 7 can adjust the airflow into the acceleration chamber body 1 according to the actual situation.

[0073] In normal operation, a powder conveying acceleration chamber 100 allows material 200 to pass through the acceleration chamber body 1 by its own gravity and the air-closing discharge valve. Under the action of nitrogen in the pressurization chamber 21, the nitrogen velocity increases sharply, forming a negative pressure area around the pressurization chamber 21 to ensure that the nitrogen in the conveying pipeline does not escape and waste energy. Finally, the material is released instantaneously through the nozzle 22 and carried away by the inertia of fluid mechanics, so that the material flows out through the discharge port 13.

[0074] It should be noted that although the above embodiments have been described herein, this does not limit the scope of patent protection for this utility model. Therefore, any changes and modifications made to the embodiments described herein based on the innovative concept of this utility model, or equivalent structural or procedural transformations made using the content of this utility model's specification and drawings, directly or indirectly applying the above technical solutions to other related technical fields, are all included within the scope of patent protection for this utility model.

Claims

1. A powder delivery acceleration chamber, characterized by, include: The acceleration chamber body includes a feed inlet, a nitrogen inlet, and a discharge outlet. The feed inlet is used to allow material to enter, and the nitrogen inlet is used to allow nitrogen to enter. A negative pressure device is installed inside the acceleration chamber. The negative pressure device includes a negative pressure outlet, which is aligned with the discharge port. The negative pressure device generates negative pressure inside the acceleration chamber.

2. The powder conveying acceleration chamber according to claim 1, characterized in that, The negative pressure device includes a pressurization chamber and a nozzle. The pressurization chamber includes a first air inlet and a first air outlet. The nozzle includes a negative pressure air inlet and a negative pressure air outlet. The first air inlet is connected to the nitrogen air inlet, and the first air outlet is connected to the negative pressure air inlet.

3. The powder delivery acceleration chamber of claim 2, wherein, The diameter of the first air outlet gradually decreases from the direction away from the nozzle to the direction closer to the nozzle.

4. The powder delivery acceleration chamber of claim 1, wherein, The negative pressure device also includes a vacuum pump, a gas ejector, or a Roots blower.

5. The powder delivery acceleration chamber of claim 1, wherein, The powder conveying acceleration chamber also includes a flow regulating device, which is installed at the bottom of the acceleration chamber body. The flow regulating device supplies gas into the acceleration chamber body to increase the airflow disturbance at the bottom of the acceleration chamber body.

6. The powder delivery acceleration chamber of claim 5, wherein, The flow regulating device is a flow regulating pipe arranged along the axial direction of the acceleration chamber body, and the flow regulating pipe has two or more air outlets evenly distributed along the axial direction of the acceleration chamber body.

7. The powder delivery acceleration chamber of claim 1, wherein, The powder conveying acceleration chamber also includes a mounting bracket, which is used to fix the negative pressure device.

8. The powder delivery acceleration chamber of claim 1, wherein, The powder conveying acceleration chamber also includes a movable flange, which is installed at the feed inlet and is used to install external pipes.

9. The powder delivery acceleration chamber of claim 1, wherein, The powder conveying acceleration chamber also includes a filter dust cover, which is installed at the nitrogen inlet and filters the nitrogen gas drawn into the acceleration chamber body.

10. The powder conveying acceleration chamber according to claim 9, characterized in that, The powder conveying acceleration chamber also includes a control valve, which is installed between the filter dust cover and the acceleration chamber body.

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