Powder conveying device and tobacco sheet processing equipment
By connecting the bypass pipe on the main pipe of the powder conveying device, the powder is divided into two channels at the connection between the main pipe and the bypass pipe, which solves the problem of unstable output powder flow during the powder conveying process, and achieves rapid uniform mixing of powder density and consistency of product quality.
Patent Information
- Application Number
- CN202421451045.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-24
- Publication Date
- 2025-03-28
- Estimated Expiration
- 2034-06-24
AI Technical Summary
The existing powder conveying device has unstable output powder flow during powder conveying, resulting in uneven mixing and precise proportioning in subsequent processes, affecting the consistency of product quality.
A powder conveying device is designed. By connecting at least one bypass pipe in the length direction of the main pipe, the powder enters in two ways at the connection between the main pipe and the bypass pipe. The powder exiting in the bypass pipe is mixed with the powder with a lower density at the rear in the main pipe to achieve rapid and even mixing of the powder density.
Through the design of the bypass pipeline, the uneven density powder in the main pipeline can be quickly mixed evenly, avoiding the problem of unstable powder discharge speed, ensuring uniform mixing and precise mixing of powder during processing, and thus ensuring the consistency of product quality.
Smart Images
Figure CN222683667U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a powder conveying device and tobacco slice processing equipment, belonging to the technical field of conveying bulk materials through grooves, pipelines or tubes by using floating materials or air flow, liquid flow or foam flow. Background Art
[0002] Heated cigarettes have attracted a lot of attention because they can effectively reduce the release of harmful substances such as tar and reduce health risks. In terms of raw material selection, processing tobacco into thin sheets can make it easier to control and adjust the chemical composition of the product. Therefore, the industry often selects tobacco sheets as tobacco raw materials to make heated cigarettes.
[0003] The preparation of tobacco flakes requires that the tobacco extract be concentrated, dried, and then crushed to obtain tobacco powder. In the production process, airflow conveying is often used to convey tobacco powder in the pipeline, that is, a feed port and a discharge port are set in the length direction of a pipeline (i.e., the main pipeline). The tobacco powder enters the main pipeline from the feed port and is discharged from the discharge port to the next process under the conveying action of the airflow. However, during the conveying process, when the density of the tobacco powder is large, the material flow rate decreases, and its conveying speed is relatively slow, which in turn affects the subsequent conveying of tobacco powder, so that the tobacco powder output from the main pipeline is sometimes more and sometimes less, resulting in unstable tobacco powder conveying flow rate. Stable tobacco powder conveying flow rate is the prerequisite for the normal operation of the process and the uniform mixing and precise proportioning of tobacco powder during the processing, which is crucial to maintaining product quality consistency.
[0004] In view of the above problems, there is an urgent need for a powder conveying device to solve the problem of unstable output powder flow rate during powder conveying. Utility Model Content
[0005] The purpose of the utility model is to provide a powder conveying device to solve the problem that the current powder conveying device has unstable output powder flow rate during powder conveying. The purpose of the utility model is also to provide a tobacco sheet processing device to solve the above problem.
[0006] In order to achieve the above-mentioned purpose, the powder conveying device of the present utility model adopts the following technical scheme:
[0007] A powder conveying device comprises a main pipe, one end of the main pipe in the length direction is a feed port for powder to enter, and the other end in the length direction is a discharge port for powder to be discharged, at least one bypass pipe is connected to the main pipe, the head and tail ends of the bypass pipe are respectively connected to the main pipe, and the head and tail ends of the bypass pipe are spaced apart in the length direction of the main pipe.
[0008] Beneficial effect: The utility model is an improved invention. When the density of the powder entering the main pipe from the feed port is large, the flow rate of the powder will decrease. By connecting at least one bypass pipe in the length direction of the main pipe, the powder is divided into two paths at the connection between the main pipe and the bypass pipe to enter the main pipe and the bypass pipe. The powder coming out of the bypass pipe is mixed with the powder with lower density and faster flow rate in the rear of the main pipe, so as to achieve the effect of making the powder density in the powder conveying device more quickly and uniformly mixed. Compared with the prior art, the powder with uneven density in the main pipe can be quickly mixed uniformly, avoiding the problem of different flow rates due to uneven powder density in the main pipe, which leads to unstable discharge speed of the powder.
[0009] Furthermore, the first and last ends of the bypass pipe are arranged at intervals along the length direction of the main pipe, and the two opposite sides of the main pipe are connected to the bypass pipe.
[0010] Furthermore, the head and tail ends of the bypass pipe on one side are staggered with the head and tail ends of the bypass pipe on the other side.
[0011] Furthermore, at least two bypass pipes are provided on each side.
[0012] Furthermore, the bypass pipe is an arc-shaped pipe.
[0013] Furthermore, the bypass pipe is in an arc shape, and a center angle of the bypass pipe is less than or equal to 90°.
[0014] Furthermore, the inner diameter of the bypass pipe is equal to the inner diameter of the main pipe.
[0015] Furthermore, the bypass pipes on both sides are of the same shape and size.
[0016] Furthermore, the bypass pipeline and the main pipeline are both stainless steel pipelines.
[0017] In order to achieve the above-mentioned purpose, the tobacco sheet processing equipment of the utility model adopts the following technical scheme:
[0018] A tobacco sheet processing device includes a tobacco powder conveying device, wherein the powder conveying device includes a main pipe, one end of the main pipe in the length direction is a feed port for powder to enter, and the other end in the length direction is a discharge port for powder to be discharged, characterized in that at least one bypass pipe is connected to the main pipe, the head and tail ends of the bypass pipe are respectively connected to the main pipe, and the head and tail ends of the bypass pipe are spaced apart in the length direction of the main pipe.
[0019] Beneficial effect: The utility model is an improved invention. When the density of the powder entering the main pipe from the feed port is large, the flow rate of the powder will decrease. By connecting at least one bypass pipe in the length direction of the main pipe, the powder is divided into two paths at the connection between the main pipe and the bypass pipe to enter the main pipe and the bypass pipe. The powder coming out of the bypass pipe is mixed with the powder with lower density and faster flow rate in the rear of the main pipe, so as to achieve the effect of making the powder density in the powder conveying device more quickly and uniformly mixed. Compared with the prior art, the powder with uneven density in the main pipe can be quickly mixed uniformly, avoiding the problem of different flow rates due to uneven powder density in the main pipe, which leads to unstable discharge speed of the powder.
[0020] Furthermore, the first and last ends of the bypass pipe are arranged at intervals along the length direction of the main pipe, and the two opposite sides of the main pipe are connected to the bypass pipe.
[0021] Furthermore, the head and tail ends of the bypass pipe on one side are staggered with the head and tail ends of the bypass pipe on the other side.
[0022] Furthermore, at least two bypass pipes are provided on each side.
[0023] Furthermore, the bypass pipe is an arc-shaped pipe.
[0024] Furthermore, the bypass pipe is in an arc shape, and a center angle of the bypass pipe is less than or equal to 90°.
[0025] Furthermore, the inner diameter of the bypass pipe is equal to the inner diameter of the main pipe.
[0026] Furthermore, the bypass pipes on both sides are of the same shape and size.
[0027] Furthermore, the bypass pipeline and the main pipeline are both stainless steel pipelines. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] Figure 1 It is a schematic structural diagram of an embodiment of a tobacco powder conveying device in tobacco sheet processing equipment of the utility model.
[0029] In the figure: 1, main pipeline; 11, feed inlet; 12, discharge outlet; 2, bypass pipeline; 21, bypass inlet; 22, bypass outlet. DETAILED DESCRIPTION
[0030] The features and performance of the present invention are further described in detail below in conjunction with the embodiments.
[0031] In view of the technical problems existing in the prior art, the basic technical concept of the utility model is:
[0032] When the density of the powder entering the main pipe from the feed port is relatively high, the flow rate of the powder will decrease. By connecting at least one bypass pipe in the length direction of the main pipe, the powder is divided into two paths at the connection point between the main pipe and the bypass pipe to enter the main pipe and the bypass pipe. The powder coming out of the bypass pipe is mixed with the powder with lower density and faster flow rate in the rear of the main pipe, so as to achieve the effect of making the powder density in the powder conveying device more uniform and faster. Compared with the prior art, the powder with uneven density in the main pipe can be quickly mixed uniformly, ensuring the stable discharge speed of the powder in the main pipe. This ensures the uniform mixing and precise proportioning of the powder during the processing.
[0033] Based on the above concept, the embodiment of the tobacco sheet processing equipment of the utility model is as follows:
[0034] like Figure 1 As shown, the tobacco sheet processing equipment includes a tobacco powder conveying device, which includes a main pipe 1, which is a straight pipe, one end of the main pipe 1 in the length direction is a feed port 11 for tobacco powder to enter, and the other end in the length direction is a discharge port 12 for tobacco powder to be discharged, and at least one bypass pipe 2 is connected to the main pipe 1, and the head and tail ends of the bypass pipe 2 are respectively connected to the main pipe 1, and the head and tail ends of the bypass pipe 2 are spaced in the length direction of the main pipe 1. The feed port 11 of the main pipe 1 is defined as the rear direction, and the discharge port 12 is defined as the front direction. In this embodiment, the bypass pipe 2 includes a bypass inlet 21 at the head end and a bypass outlet 22 at the tail end, and the bypass inlet 21 and the bypass outlet 22 are respectively connected to the main pipe 1 and the bypass inlet 21 and the bypass outlet 22 are spaced along the length direction of the main pipe 1, and the two opposite sides of the main pipe 1 are connected to the bypass pipe 2, that is, the bypass pipes 2 on both sides are arranged at 180 degrees. When the tobacco powder being transported has a slow flow rate in the main pipe 1 due to its large density, when it flows to the connection point between the main pipe 1 and the bypass pipe 2, part of the powder will enter the bypass pipe 2 from the bypass inlet 21, and the powder coming out of the bypass pipe 2 will be mixed with the powder with a smaller density and a faster flow rate in the rear of the main pipe 1, thereby achieving the effect of making the powder density in the tobacco powder conveying device mix more quickly and evenly. The bypass pipes 2 arranged on both sides further accelerate the mixing process of tobacco powders with different densities in the tobacco powder conveying device, thereby ensuring the stability of the tobacco powder conveying flow rate.
[0035] The head and tail ends of the bypass pipe 2 on one side of the main pipe 1 are staggered with the head and tail ends of the bypass pipe 2 on the other side, that is, the bypass inlet 21 of the bypass pipe 2 on one side is located between the bypass inlet 21 and the bypass outlet 22 of a bypass pipe 2 on the other side, and the bypass outlet 22 is located between the bypass inlet 21 and the bypass outlet 22 of the front adjacent bypass pipe 2 on the other side. Therefore, the tobacco powder flowing into the main pipe 1 from the bypass outlet 22 of the bypass pipe 2 is mixed with the tobacco powder in the main pipe 1 again, rather than the tobacco powder flowing into the main pipe 1 from the bypass outlets 22 of the bypass pipes 2 on both sides. The mixing efficiency of tobacco powders with different densities is further accelerated, and the stability of the output tobacco powder flow rate is ensured.
[0036] At least two bypass pipes 2 are provided on each side, that is, multiple bypass pipes 2 are provided in the length direction of the main pipe 1. In this embodiment, five bypass pipes 2 are provided on opposite sides of the main pipe 1, so that multiple openings of the bypass pipes 2 that can divert tobacco powder are provided on both sides of the main pipe 1, further improving the mixing efficiency of the powder in the tobacco powder conveying device and ensuring the stability of the conveying flow rate of the tobacco powder.
[0037] The shape of the bypass pipe 2 is specifically an arc, so as to reduce the resistance brought by the bypass pipe 2 during the flow of tobacco powder, and avoid large energy loss due to large turning amplitude in the bypass pipe 2, thereby slowing down the conveying speed. Further, the bypass pipe 2 is an arc, and the center angle of the bypass pipe 2 is less than or equal to 90°, so as to avoid large energy loss due to excessive turning amplitude between the bypass pipe 2 and the main pipe 1. In this embodiment, the center angle of the bypass pipe 2 is 90°. In order to avoid different flow rates of tobacco powder in the main pipe 1 and the bypass pipe 2, thereby causing unstable output tobacco powder flow, the inner diameter of the bypass pipe 2 is equal to the inner diameter of the main pipe 1. The bypass pipe 2 and the main pipe 1 are both stainless steel pipes, which facilitates cleaning in the pipe and improves cleaning efficiency.
[0038] In other embodiments, the bypass pipe and the main pipe may be plastic pipes instead of stainless steel pipes.
[0039] In other embodiments, the bypass pipes on opposite sides of the main pipe may have different shapes and sizes. For example, the bypass pipes on the two sides may be arranged at intervals of pipes of different sizes.
[0040] In other embodiments, the inner diameter of the bypass pipe may no longer be equal to the inner diameter of the main pipe, but may be larger than the inner diameter of the main pipe.
[0041] In other embodiments, the central angle of the bypass pipe may no longer be 90°, but may be 80° or 70°.
[0042] In other embodiments, the bypass pipe may not be an arc-shaped pipe, but may be formed by smoothly connecting three or four arc-shaped pipes with different curvature radii.
[0043] In other embodiments, the number of bypass pipes on both sides of the main pipe may be one, two, three or four.
[0044] In other embodiments, the number of bypass pipes on both sides of the main pipe may also be unequal, such as two bypass pipes on one side and three bypass pipes on the other side.
[0045] In other embodiments, the bypass pipes on opposite sides of the main pipe may also be arranged end to end.
[0046] In other embodiments, the bypass pipes on both sides of the main pipe may no longer be arranged back to back, but may be arranged at a certain angle along the circumference of the main pipe, such as 120° or 150°.
[0047] In other embodiments, the center line of the bypass pipe may not be located in the same plane as the axis of the main pipe, that is, the bypass pipe is spirally arranged on the main pipe.
[0048] In other embodiments, the bypass pipeline may be provided on only one side of the main pipeline, and the number of the bypass pipelines may be one, two, three or more.
[0049] In other embodiments, the main pipe may no longer be a straight pipe, but a continuously extending curved pipe.
[0050] Embodiment of the powder conveying device of the utility model:
[0051] The specific structure of the powder conveying device is the same as that of the tobacco powder conveying device in the above tobacco sheet processing equipment, and will not be described in detail here. In addition to conveying tobacco powder, the powder conveying device can also be used to convey flour, cement and other items.
[0052] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. The patent protection scope of the present invention shall be based on the claims. All equivalent structural changes made using the description and drawings of the present invention shall be included in the protection scope of the present invention.
Claims
1. A powder conveying device, comprising a main pipe, one end of the main pipe in the length direction is a feed inlet for powder to enter, and the other end in the length direction is a discharge outlet for powder to be discharged, characterized in that: At least one bypass pipeline is connected to the main pipeline. The head and tail ends of the bypass pipeline are respectively connected to the main pipeline. The head and tail ends of the bypass pipeline are spaced apart in the length direction of the main pipeline.
2. The powder conveying device according to claim 1, characterized in that: The first and last ends of the bypass pipeline are arranged at intervals along the length direction of the main pipeline, and the two opposite sides of the main pipeline are connected to the bypass pipeline.
3. The powder conveying device according to claim 2, characterized in that: The head and tail ends of the bypass pipeline on one side are staggered with the head and tail ends of the bypass pipeline on the other side.
4. The powder conveying device according to claim 2, characterized in that: There are at least two bypass pipes on each side.
5. The powder conveying device according to any one of claims 1 to 4, characterized in that: The bypass pipeline is an arc-shaped pipeline.
6. The powder conveying device according to claim 5, characterized in that: The bypass pipeline is in an arc shape, and the center angle of the bypass pipeline is less than or equal to 90°.
7. The powder conveying device according to any one of claims 1 to 4, characterized in that: The inner diameter of the bypass pipeline is equal to the inner diameter of the main pipeline.
8. The powder conveying device according to any one of claims 2 to 4, characterized in that: The bypass pipes on both sides have the same shape and size.
9. The powder conveying device according to any one of claims 1 to 4, characterized in that: The bypass pipeline and the main pipeline are both stainless steel pipelines.
10. A tobacco sheet processing device, comprising a tobacco powder conveying device, characterized in that: The tobacco powder conveying device is the powder conveying device according to any one of claims 1-9.