An adjustable length powder material feed tube

Abstract

This utility model discloses an adjustable-length powder material guide tube, which is composed of multiple sets of tubes with different diameters connected in sequence. The smaller end of the preceding tube is inserted into the larger end of the following tube, and the tubes move synchronously at equal intervals in conjunction with an equal-interval variable-pitch mechanism. The equal-interval variable-pitch mechanism includes a chain structure composed of rhomboid units, and the tube spacing is adjusted by a motor-driven lead screw. In addition, a foldable sealing cloth is provided between adjacent tubes, and the inner wall of the tube is smooth. This guide tube can quickly adjust its length to meet the needs of different production scenarios; it maintains good rigidity during extension and retraction to ensure stable material conveying; it avoids material accumulation inside the tube, prevents leakage, and improves conveying efficiency and product quality.

Description

Technical Field

[0001] This utility model relates to the technical field of powder material conveying equipment, and in particular to a powder material guide pipe with adjustable length. Background Technology

[0002] In the conveying of powdery materials, the length of the guide pipe often needs to be adjusted according to changes in the actual production scenario. For example, transferring powdery materials between storage silos and processing equipment at different heights, or adjusting the layout of production equipment, all require adjustment of the guide pipe's length. However, most existing powdery material guide pipes are of fixed length. Changing the length requires reinstallation or replacement of the guide pipe, which is cumbersome and time-consuming. Although some telescopic guide pipes exist, insufficient rigidity often leads to deformation during extension, affecting the stability of material conveying. Furthermore, powdery materials tend to accumulate at the extension joints of the pipe during extension, causing blockages, affecting conveying efficiency, and even leading to agglomeration and deterioration, reducing product quality. Therefore, there is an urgent need for a powdery material guide pipe that can quickly adjust its length, maintain rigidity, and prevent material accumulation. Utility Model Content

[0003] To address the technical problems existing in the background art, this utility model proposes a powder material guide tube with adjustable length.

[0004] This utility model proposes a powder material guide tube with adjustable length, comprising:

[0005] Multiple sets of tubes, each with different diameters at both ends, one end being a large opening and the other a small opening, are connected in sequence, with the small opening of the previous tube inserted into the large opening of the next tube.

[0006] The equal-spacing variable-pitch mechanism is used to drive each tube to move synchronously and at equal intervals, with the smaller end of one tube always located inside the larger end of the other tube.

[0007] Preferably, the equal-spacing variable-pitch mechanism includes multiple rhomboid units, each of which is formed by four rods of equal length hinged together to form a parallelogram. Adjacent rhomboid units are hinged at their vertices through a linkage hinge assembly to form a chain structure that can be synchronously extended and retracted.

[0008] Each set of tubes has a pin on the outer wall near the large opening end. Multiple sets of pins are on the same straight line. Each node of the equal-spacing variable-pitch mechanism is connected to the pin of the corresponding tube, which is used to drive each tube to move synchronously at equal intervals.

[0009] Preferably, the outermost wall of the top of the tube is provided with a mounting bracket, on which a motor is mounted. The transmission part of the motor is connected to a lead screw. The pin of the second tube is provided with an extension that is threadedly connected to the lead screw. The motor drives the lead screw to rotate, thereby driving the threaded transmission between the lead screw and the extension, thus changing the two diagonal distances of the equal-distance variable-pitch mechanism and realizing the equal-distance change of all tubes.

[0010] Preferably, a foldable sealing cloth is connected between the outer walls of adjacent tubes, and the small end of one tube and the large end of the adjacent tube are located in the sealing cloth. The edges of the sealing cloth are respectively fixed to the outer walls of the adjacent tubes to prevent leakage of powdery materials during the expansion and contraction of the tubes.

[0011] Preferably, the inner wall of each set of tubes is smooth, and the smooth inner wall is used to reduce the adhesion and resistance of powdery materials during the conveying process.

[0012] The adjustable-length powder material guide tube proposed in this invention has the following beneficial effects:

[0013] Quick length adjustment: The motor drives the lead screw, which in turn drives the equal-pitch variable pitch mechanism to change the diagonal pitch. This enables multiple sets of tubes to move synchronously and at equal intervals, thereby quickly adjusting the length of the guide tube to meet the needs of different production scenarios. It is easy to operate and saves time and labor costs.

[0014] Maintaining rigidity: The structure of multiple sets of tubes nested together and the supporting effect of the equal-spacing variable-pitch mechanism ensure that the guide tube maintains good rigidity during the expansion and contraction process, and will not deform due to changes in length, thus ensuring the stability and reliability of material conveying.

[0015] To prevent material accumulation: The reducing sleeve structure of the pipe body allows the smaller end of the previous pipe body to be inserted into the larger end of the next pipe body, preventing powdery materials from accumulating inside the pipe body during the expansion and contraction process; at the same time, the smooth inner wall of the pipe body further reduces the adhesion and accumulation of materials, ensuring smooth material transportation, improving transportation efficiency, avoiding problems such as caking and deterioration caused by material accumulation, and ensuring product quality.

[0016] Good sealing performance: The foldable sealing cloth connecting the outer walls of adjacent pipes effectively prevents the leakage of powdery materials, ensures the cleanliness of the working environment, and enhances the sealing performance of the guide pipe, thereby improving the efficiency of material conveying.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] Figure 1This is a front view of the present invention when extended;

[0019] Figure 2 This is a front view of the present invention when it is shrunk.

[0020] Figure 3 This is a schematic diagram of the structure of the present invention when extended;

[0021] Figure 4 This is a schematic diagram of the structure of this utility model during contraction;

[0022] Figure 5 This is a partial structural schematic diagram of the present invention;

[0023] The following are the labels in the diagram: 1. Tube body; 101. Pin; 2. Equal pitch variable pitch mechanism; 3. Mounting bracket; 301. Motor; 302. Lead screw; 303. Extension. Detailed Implementation

[0024] The embodiments of this utility model are described in detail below. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar symbols denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0025] like Figures 1-5 The image shows an adjustable-length feed tube for powdered materials.

[0026] Pipe body 1 structure: The pipe body 1 has a unequal diameter structure at both ends, with one end being a large opening and the other a small opening. Multiple sets of pipe bodies 1 are sequentially nested, with the small opening of the previous pipe body 1 inserted into the large opening of the next pipe body 1. This structural design prevents powdery materials from accumulating at the nesting points of the pipe bodies 1 during expansion and contraction, ensuring smooth material conveying. Simultaneously, the nesting method of multiple sets of pipe bodies 1 enhances the overall rigidity of the guide pipe, allowing it to maintain a stable shape and prevent easy deformation even during length adjustments.

[0027] The equidistant pitch mechanism 2 is used to drive each tube 1 to move synchronously and at equal intervals, with the smaller end of tube 1 always located inside the larger end of another tube 1. Specifically, the equidistant pitch mechanism 2 includes multiple rhomboid units, each of which is a parallelogram formed by four rods of equal length hinged together. Adjacent rhomboid units are hinged at their vertices through a linkage hinge assembly, forming a chain structure that can extend and retract synchronously. Each group of tubes 1 has a pin 101 on the outer wall near the larger end, and multiple groups of pins 101 are on the same straight line. Each node of the equidistant pitch mechanism 2 is connected to the pin 101 of the corresponding tube 1, driving each tube 1 to move synchronously and at equal intervals. This mechanism design can precisely control the movement of each tube 1, achieving equal-interval extension and retraction, and ensuring the stability and reliability of the guide tube during length adjustment.

[0028] Furthermore, the outermost wall of the top of the uppermost tube 1 is provided with a mounting bracket 3, on which a motor 301 is mounted. The transmission part of the motor 301 is connected to a lead screw 302. The pin 101 of the second tube 1 is provided with an extension 303 that is threadedly connected to the lead screw 302. The motor 301 drives the lead screw 302 to rotate, thereby driving the threaded transmission between the lead screw 302 and the extension 303, thus changing the two diagonal distances of the equal-distance variable-pitch mechanism 2, achieving equal-distance changes in all tubes 1. This driving method is simple to operate and can quickly and accurately adjust the length of the guide tube to meet the needs of different production scenarios.

[0029] Furthermore, a foldable sealing cloth is connected between the outer walls of adjacent pipe bodies 1, with the small opening of one pipe body 1 and the large opening of an adjacent pipe body 1 located within the sealing cloth. The sealing cloth not only prevents powdery materials from leaking through the gaps between the pipe bodies 1, ensuring a clean working environment, but also enhances the sealing performance of the feed pipe to a certain extent, improving the efficiency of material conveying. The inner walls of each set of pipe bodies 1 are smooth, further reducing the adhesion and accumulation of powdery materials on the inner walls of the pipe bodies 1, ensuring that the material can pass smoothly through the feed pipe.

[0030] In this embodiment, during operation:

[0031] The adjustable-length powder material guide tube of the present invention is installed in the powder material conveying system, with the large end of the guide tube connected to the output end of the powder material (such as the discharge port of the storage silo), and the small end connected to the receiving end of the powder material (such as the feed port of the processing equipment).

[0032] When the length of the guide tube needs to be adjusted, the motor 301, mounted on the top mounting bracket 3 of the topmost tube 1, is activated, driving the lead screw 302 to rotate. Since the pin 101 of the second tube 1 has an extension 303 threadedly connected to the lead screw 302, the rotation of the lead screw 302 drives the second tube 1 to move via the threaded transmission, thereby causing the equal-pitch variable-pitch mechanism 2 to deform and change its two diagonal pitches. Because each node of the equal-pitch variable-pitch mechanism 2 is connected to the corresponding pin 101 of the tube 1, it can drive all tubes 1 to move synchronously and at equal intervals, thus achieving the adjustment of the guide tube length.

[0033] During the expansion and contraction of tube 1, the foldable sealing cloth between the outer walls of adjacent tubes 1 unfolds or folds accordingly, maintaining a good seal and preventing leakage of powdery materials. At the same time, since the small opening of tube 1 is always inside the large opening of another tube 1, and the inner wall of tube 1 is smooth, powdery materials can pass smoothly through the feed pipe and will not accumulate inside tube 1.

[0034] In a powder material processing workshop, it is necessary to transport powder materials from storage silos to processing equipment at different heights. By using the adjustable-length powder material guide pipe of this invention, the length of the guide pipe can be quickly adjusted according to the height changes of the processing equipment, ensuring that the powder materials can be smoothly transported to the processing equipment. Furthermore, no problems such as guide pipe deformation, material accumulation, or leakage occurred during the transport process, thus improving production efficiency and product quality.

[0035] It should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "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 accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not 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.

[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0037] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0038] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0039] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A length adjustable powder material guide tube, characterized in that, include: Multiple sets of pipes (1), the two ends of the pipes (1) are of different diameters, one end is a large end and the other end is a small end. Multiple sets of pipes (1) are connected in sequence, and the small end of the previous pipe (1) is inserted into the large end of the next pipe (1). The equal-spacing variable-pitch mechanism (2) is used to drive each tube (1) to move synchronously at equal intervals, and the small end of the tube (1) is always located inside the large end of the other tube (1).

2. A length adjustable powder material guide pipe according to claim 1, characterized in that, The equal-spacing variable-pitch mechanism (2) includes multiple rhomboid units. Each rhomboid unit is formed by four rods of equal length hinged together to form a parallelogram. Adjacent rhomboid units are hinged at their vertices through a linkage hinge assembly to form a chain structure that can be synchronously extended and retracted. Each set of tubes (1) has a pin (101) on the outer wall near the large opening end. Multiple sets of pins (101) are on the same straight line. Each node of the equal-spacing variable-pitch mechanism (2) is connected to the pin (101) of the corresponding tube (1) to drive each tube (1) to move synchronously at equal intervals.

3. A length adjustable powder material guide according to claim 2, characterized in that, The top outer wall of the tube (1) at the top is provided with a mounting bracket (3), and a motor (301) is mounted on the mounting bracket (3). The transmission part of the motor (301) is connected to the lead screw (302). The pin (101) of the second tube (1) is provided with an extension (303) that is threadedly connected to the lead screw (302). The motor (301) drives the lead screw (302) to rotate, thereby driving the threaded transmission between the lead screw (302) and the extension (303), thereby changing the two diagonal distances of the equal-distance variable-pitch mechanism (2) and realizing the equal-distance change of all tubes (1).

4. A length adjustable powder material guide pipe according to claim 1, characterized in that, The inner wall of each tube (1) is smooth.

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