Spiral conveying device for potassium hexatitanate and conveying method thereof

Abstract

The invention belongs to the technical field of conveying, and particularly relates to a spiral conveying device for potassium hexatitanate and a conveying method of the spiral conveying device. The spiral conveying device for potassium hexatitanate comprises a feeding hopper arranged at the top of the feeding end of a machine body; the discharging pipe is arranged at the bottom of the discharging end of the machine body; the hot air adjusting mechanism comprises a positioning pipe which is arranged at the end part of the machine body in a sliding manner; the hot air pipe is rotationally arranged in the positioning pipe and communicates with an air heater; one end of each adjusting piece is hinged to the end of the hot air pipe and is in an arc shape; when materials are conveyed, all the adjusting pieces are turned over and expanded outwards relative to the hot air pipe, and hot air sent out of the hot air pipe flows into the machine body in a diffusion mode through the inner walls of all the adjusting pieces. When the discharging pipe is blocked, materials push the positioning pipe to slide outwards, the positioning pipe pushes all the adjusting pieces to overturn inwards and be gathered, and hot air sent out from the hot air pipe impacts and dredges the materials in a gathering mode through the inner walls of all the adjusting pieces.

Description

Technical Field

[0001] The present invention belongs to the field of conveying technology, and specifically relates to a loading conveyor, and more particularly to a screw conveying device for potassium hexatitanate and a conveying method thereof. Background Art

[0002] When potassium hexatitanate powder is used as a flame retardant filler (such as automobile brake pads), the moisture content needs to be controlled to less than 5%. Therefore, the potassium hexatitanate powder needs to be dried when it is fed.

[0003] In the related art, a crawler dryer is often used to dry powdered potassium hexatitanate. This method allows the surface powder to be quickly dehydrated and shelled, and the internal moisture cannot overflow, resulting in a lower yield.

[0004] When a screw conveyor is used for loading, hot air is transported into the screw conveyor to dry the powdered potassium hexatitanate. The powdered potassium hexatitanate will form a bridge phenomenon at the discharge pipe, causing material accumulation. Although the rotation of the screw conveyor during the conveying process can reduce the internal moisture, the accumulated material will block the hot air outlet when working for a long time, affecting the normal drying of the material.

[0005] Therefore, how to solve the above-mentioned defects is a technical problem that needs to be solved urgently in this field.

[0006] It should be noted that the above information disclosed in this background technology section is only used to understand the background technology of the present application concept, and therefore, the above description is not considered to constitute information of related technology. Summary of the Invention

[0007] The embodiments of the present disclosure at least provide a screw conveying device for potassium hexatitanate and a working method thereof.

[0008] In a first aspect, an embodiment of the present disclosure provides a screw conveying device for potassium hexatitanate, comprising: An upper hopper, which is arranged on the top of the feeding end of the machine body; A discharge pipe is provided at the bottom of the discharge end of the machine body; Hot air regulating mechanism, comprising: A positioning tube is slidably arranged at the end of the machine body and is located above the discharge tube; a hot air pipe, which is rotatably disposed in the positioning pipe and is connected to the hot air blower; A plurality of adjusting members, one end of which is hinged to the end of the hot air pipe and is in an arc shape; When conveying materials, each regulating member turns outward and expands relative to the hot air pipe, and the hot air sent out of the hot air pipe diffuses through the inner wall of each regulating member and flows into the machine body; When the discharge pipe is blocked, the material pushes the positioning tube to slide outward, and the positioning tube pushes the adjusting parts to flip inward and gather together. The hot air sent out of the hot air pipe passes through the inner walls of the adjusting parts to impact and dredge the material.

[0009] In an optional embodiment, a guide strip is provided on the inner wall of the adjusting member, the width of the guide strip is 0.5-1 mm, and the distance between two adjacent guide strips is 3-4 times the width of the guide strip.

[0010] In an optional embodiment, the guide strips extend radially outward along the inner wall of the adjusting member, and a plurality of guide strips are evenly distributed in a spiral shape along the inner wall of the adjusting member; The spiral direction of the guide strip is consistent with the rotation direction of the hot air pipe.

[0011] In an optional embodiment, a fixing column is provided in the hot air pipe, and a guide cone is provided at the end of the fixing column close to the adjusting member, and the guide cone protrudes from the hot air pipe.

[0012] In an optional embodiment, the outer diameter of the guide cone gradually increases from one end close to the fixing column to the other end.

[0013] In an optional embodiment, a limiting plate is provided at one end of the positioning tube close to the adjusting member, an air outlet is provided at the center of the limiting plate, and the inner diameter of the air outlet is not less than the outer diameter formed by each adjusting member in the expanded state.

[0014] In an optional embodiment, the inner side wall of the limiting disk is provided with a conical ring; The outer wall of each adjusting member is provided with an inclined surface matching the conical ring; When the positioning tube slides toward the hot air tube, the conical ring pushes the inclined surface to cause the adjusting parts to turn inward and gather together.

[0015] In an optional embodiment, a connecting ring is provided on the outer wall of the limiting plate, the inner diameter of the connecting ring is consistent with the air outlet, the connecting ring is slidably provided in the connecting hole at the end of the machine body, and the end protrudes from the inner wall of the machine body.

[0016] In an optional embodiment, a return spring is provided at the outer end of the positioning tube, and the return spring is suitable for squeezing the positioning tube to move toward the machine body.

[0017] In an optional embodiment, a torsion spring is provided at a hinge point between the adjusting member and the hot air pipe, and the torsion spring is suitable for pushing the adjusting member to flip and expand outward relative to the hot air pipe.

[0018] In a second aspect, the present disclosure also provides a method for conveying potassium hexatitanate using a screw conveying device, the method comprising: When conveying materials, each regulating part turns outward and expands relative to the hot air pipe, and the hot air sent out from the hot air pipe diffuses through the inner wall of each regulating part and flows into the machine body; When the discharge pipe is blocked, the material pushes the positioning tube to slide outward, and the positioning tube pushes the adjusting parts to flip inward and gather together. The hot air sent out of the hot air pipe passes through the inner walls of the adjusting parts to impact and dredge the material.

[0019] The beneficial effects of the present invention are as follows: it provides a spiral conveying device and method for potassium hexatitanate, which effectively solves the problem of material drying through a dynamically adjustable hot air regulating mechanism. During normal hot air conveying, the regulating members flip outward and expand, forming a diffuse airflow, allowing the hot air to evenly penetrate the powder layer and increase the contact area between the incoming hot air and the powdered material. A unique trigger mechanism, in which the material pushes the positioning tube to move, causes the regulating members to flip inward and converge when the powdered material blocks the discharge tube, thereby forming a high-speed hot air jet, increasing the impact force of the hot air and preventing material blockage.

[0020] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention are realized and obtained by the structures particularly pointed out in the description and the drawings.

[0021] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are specifically cited herein and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in related technologies, the following briefly introduces the drawings required for use in the specific embodiments or related technical descriptions. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 A perspective view of a screw conveying device for potassium hexatitanate provided in an embodiment of the present disclosure; Figure 2 A three-dimensional diagram of a hot air regulating mechanism provided in an embodiment of the present disclosure; Figure 3 A sectional perspective view of a hot air regulating mechanism provided in an embodiment of the present disclosure; Figure 4 A three-dimensional diagram of the state where the adjusting members provided in the embodiment of the present disclosure are gathered inwards; Figure 5 A schematic diagram of the airflow diffusion state during normal operation provided by an embodiment of the present disclosure.

[0024] In the picture: 1. Machine body; 2. Upper hopper; 3. Discharge pipe; 4. Hot air adjustment mechanism; 41. Positioning pipe; 42. Adjusting piece; 420. Guide strip; 421. Inclined surface; 43. Fixing column; 430. Guide cone; 44. Hot air pipe; 45. Limiting plate; 450. Conical ring; 451. Connecting ring. DETAILED DESCRIPTION

[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0026] In this document, when it is mentioned that a first component is located on a second component, this may mean that the first component may be directly formed on the second component, or that a third component may be interposed between the first component and the second component. In addition, in the drawings, the thickness of components may be exaggerated or reduced in order to effectively describe technical content.

[0027] Herein, example embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. As used herein, expressions such as "at least one of..." when following a list of elements modify the entire list of elements. For example, the expression "at least one of a, b, and c" should be understood to include only a, only b, only c, both a and b, both a and c, both b and c, or all of a, b, and c.

[0028] The terms used herein are only used to describe specific exemplary configurations and are not intended to be limiting. As used herein, the singular articles "a", "an" and "the" may also be intended to include plural forms, unless otherwise clearly indicated herein. The terms "comprise", "include" and "have" are inclusive and therefore specify the presence of features, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components and / or combinations thereof. The method steps, processes and operations described herein should not be interpreted as necessarily requiring them to be performed in the particular order discussed or shown, unless specifically identified as an execution order. Additional or alternative steps may be adopted.

[0029] As used herein, the phrases "in one embodiment," "according to one embodiment," "in some embodiments," and the like generally refer to the fact that the particular feature, structure, or characteristic following the phrase may be included in at least one embodiment of the present disclosure. Thus, a particular feature, structure, or characteristic may be included in more than one embodiment of the present disclosure, such that these phrases do not necessarily refer to the same embodiment. As used herein, the terms "example," "exemplary," and the like are used to "serve as an example, instance, or illustration." Any implementation, aspect, or design described herein as "example" or "exemplary" is not necessarily to be construed as preferred or advantageous over other implementations, aspects, or designs. Instead, the use of the terms "example," "exemplary," and the like is intended to present concepts in a concrete manner.

[0030] Research has found that in related technologies, crawler dryers are often used to dry powdered potassium hexatitanate. This method allows the surface powder to quickly dehydrate and form a shell, and the internal moisture cannot overflow, resulting in a lower yield rate.

[0031] When a screw conveyor is used for loading, hot air is transported into the screw conveyor to dry the powdered potassium hexatitanate. The powdered potassium hexatitanate will form a bridge phenomenon at the discharge pipe, causing material accumulation; and the accumulated material will also block the hot air outlet, affecting the normal drying of the material.

[0032] Therefore, how to solve the above-mentioned defects is a technical problem that needs to be solved urgently in this field.

[0033] The defects in the above solutions and the causes of their occurrence are the results obtained by the inventors after practice and careful research. Therefore, the process of discovering the above problems and the solutions proposed by the present disclosure in this article should be the contributions made by the inventors to the present disclosure during the disclosure process.

[0034] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0035] The following embodiments of the present invention are described in detail with reference to the accompanying drawings. In the absence of conflict, the following embodiments and features therein may be combined with each other.

[0036] like Figures 1 to 5As shown, at least one embodiment provides a screw conveying device for potassium hexatitanate, comprising: an upper hopper 2, which is arranged at the top of the feed end of the machine body 1; the machine body 1 is a screw conveying device. The upper hopper 2 is welded to the top feed end of the machine body 1, with a volume of 50L, and is used to accommodate the potassium hexatitanate powder to be dried (water content 8%-12%). The lower feed pipe 3 is arranged at the bottom of the discharge end of the machine body 1; the flange is connected to the discharge end at the bottom of the machine body 11, with an inner diameter of 80mm, and a pneumatic valve is provided at the end to control the discharge flow rate. A drive motor is provided at one end of the machine body 1 close to the upper hopper 2, and a screw conveying rod is provided in the machine body 1. The drive motor drives the screw conveying rod to rotate to convey the material in the upper hopper 2 to the lower feed pipe 3.

[0037] Reference Attachment Figure 3 The hot air regulating mechanism 4 comprises: a positioning tube 41, which is slidably arranged at the end of the machine body 1 and is located above the discharge pipe 3; a limiting plate 45 is provided at one end of the positioning tube 41 close to the adjusting member 42, and an air outlet is provided at the center of the limiting plate 45, and the inner diameter of the air outlet is not less than the outer diameter formed by each adjusting member 42 in the expanded state. A conical ring 450 is provided on the inner side wall of the limiting plate 45; and an inclined surface 421 matching the conical ring 450 is provided on the outer wall of each adjusting member 42; wherein, when the positioning tube 41 slides toward the hot air pipe 44, the conical ring 450 pushes the inclined surface 421, so that each adjusting member 42 flips inward and gathers together. A connecting ring 451 is provided on the outer wall of the limiting plate 45, and the inner diameter of the connecting ring 451 is consistent with the air outlet. The connecting ring 451 is slidably arranged in the connecting hole at the end of the machine body 1, and the end thereof protrudes from the inner wall of the machine body 1. A return spring is provided at the outer end of the positioning tube 41, and the return spring is suitable for squeezing the positioning tube 41 to move in the direction of the machine body 1. The return spring always pushes the positioning tube 41 to move to the left and against the end wall of the machine body 1. The hot air pipe 44 is rotatably arranged in the positioning tube 41 and is connected to the hot air blower; the hot air pipe 44 is rotatably installed in the positioning tube 41 through a bearing, and the right end is connected to the hot air blower hose (hot air temperature 150℃±10℃); a stainless steel fixing column 43 is coaxially fixed in the hot air pipe 44, and the left end of the fixing column 43 extends out of the hot air pipe 44 and is welded with a guide cone 430 (cone angle 60°, maximum outer diameter is 80% of the inner diameter of the hot air pipe 44); Several adjusting members 42 are hinged at one end to the end of the hot air pipe 44 and are arc-shaped. The adjusting members 42 are flexible. A torsion spring is provided at the hinge point between the adjusting members 42 and the hot air pipe 44, and the torsion spring is adapted to push the adjusting members 42 to turn and expand outward relative to the hot air pipe 44. There are six adjusting members 42, each stamped into an arc shape from 304 stainless steel. One end is hinged to the left end of the hot air pipe 44 via a rotating shaft. A torsion spring (torque 0.8 N·m) is installed at the hinge point to maintain the outward expansion tendency of the adjusting members 42. During material conveying, each adjusting member 42 rotates outward relative to the hot air pipe 44, causing the hot air discharged from the hot air pipe 44 to diffuse into the machine body 1 through the inner walls of each adjusting member 42. When the discharge pipe 3 is blocked, the material pushes the positioning tube 41 outward, which pushes the adjusting members 42 inward and converges. The hot air discharged from the hot air pipe 44 converges along the inner walls of each adjusting member 42, impacting and clearing the material. The dynamically adjustable hot air regulating mechanism 4 effectively solves the problem of material drying. During normal hot air conveying, each adjusting member 42 rotates outward and expands, forming a diffuse airflow, allowing the hot air to evenly penetrate the powder layer and increasing the contact area between the incoming hot air and the powder material. The original trigger mechanism of the material pushes the positioning tube 41 to move. When the powder material blocks the discharge tube 3, the adjusting parts 42 are pushed inward and gathered together, thereby forming a high-speed hot air jet, increasing the impact force of the hot air and avoiding material blockage.

[0038] Continue to refer to the attached Figure 3 The inner wall of the adjusting member 42 is provided with guide strips 420. These strips 420 are 0.5-1 mm wide, and the spacing between adjacent strips 420 is 3-4 times the width of the strips 420. These strips 420 extend radially outward along the inner wall of the adjusting member 42, and several strips 420 are evenly distributed along the inner wall of the adjusting member 42 in a spiral shape. The spiral direction of the strips 420 aligns with the rotation direction of the hot air duct 44. The six strips 420 of the adjusting member 42 collectively form a right-handed spiral channel (matching the clockwise rotation direction of the hot air duct 44).

[0039] The specific working principle is as follows: Normal conveying dry state, refer to the attached Figure 3 Potassium hexatitanate powder falls from the upper hopper 2 into the machine body 1; the hot air pipe 44 rotates at 30 rpm, introducing 150°C hot air (flow rate 10 m³ / min); the adjusting member 42 expands to the maximum angle under the action of the torsion spring, and the hot air is rectified by the guide cone 430 and diffused into a swirling hot air through the spiral guide strip 420, uniformly heating the powder in the machine body 1; the positioning tube 41 is tightly attached to the inner wall of the machine body 1 under the action of the return spring. Figure 3 F1 in the figure indicates that the positioning tube 41 moves away from the hot air tube 44. Figure 3 The arrows in the figure indicate the direction of hot air flow.

[0040] For the blockage and unblocking status, please refer to the attached Figure 4 and Figure 5 : When potassium hexatitanate powder forms a bridge blockage at the discharge pipe 3, the accumulated material pushes the connecting ring 451 to move to the right; the positioning tube 41 drives the limit plate 45 to move to the right, and the conical ring 450 squeezes the inclined surface 421 of the adjusting part 42, forcing the 6 adjusting parts 42 to overcome the torsion spring force and gather inward; the hot air is focused into a high-speed airflow (the flow rate increases from 15m / s to 35m / s), impacting the blockage point; the rotation of the hot air pipe 44 drives the adjusting part 42 to rotate synchronously, causing the focused airflow to produce a drilling effect, clearing the material within 3 seconds. Figure 4 F1 in the figure indicates that the positioning tube 41 is pushed by the accumulated materials to move toward the hot air tube 44 . Figure 5 The arrows in the figure indicate the direction of hot air flow.

[0041] During the reset process, after the blockage is released, the material pressure disappears, and the reset spring pushes the positioning tube 41 to move left; the limit plate 45 disengages from the adjusting member 42, and the torsion spring drives the adjusting member 42 to expand again to the working state.

[0042] At least one embodiment provides a method for conveying potassium hexatitanate using a screw conveying device, the method comprising: When conveying materials, each regulating member 42 turns outward and expands relative to the hot air pipe 44, and the hot air sent out from the hot air pipe 44 diffuses through the inner wall of each regulating member 42 and flows into the machine body 1; When the discharge pipe 3 is blocked, the material pushes the positioning pipe 41 to slide outward, and the positioning pipe 41 pushes the adjusting parts 42 to turn inward and gather together. The hot air sent out from the hot air pipe 44 impacts and clears the material through the inner walls of the adjusting parts 42 in a concentrated manner.

[0043] In the description of the embodiments of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0044] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, terms such as "first", "second" and other numerical terms do not imply an order or sequence when used herein unless expressly indicated above. Therefore, without departing from the teachings of the example embodiments, the first element, component, region, layer or section discussed above may be referred to as a second element, component, region, layer or section.

[0045] With the above-described preferred embodiments of the present invention as a guide, and with reference to the above description, relevant personnel are fully capable of making various changes and modifications without departing from the technical scope of this invention. The technical scope of this invention is not limited to the contents of the specification and must be determined according to the scope of the claims.

Claims

1. A screw conveying device for potassium hexatitanate, characterized in that: include: An upper hopper (2) is arranged on the top of the feeding end of the machine body (1); A discharge pipe (3) is provided at the bottom of the discharge end of the machine body (1); The hot air regulating mechanism (4) comprises: A positioning tube (41) is slidably arranged at the end of the machine body (1) and is located above the discharge tube (3); a hot air pipe (44) rotatably disposed in the positioning pipe (41) and connected to the hot air blower; A plurality of adjusting members (42), one end of which is hinged to the end of the hot air pipe (44) and is in an arc shape; When conveying materials, each regulating member (42) turns outward and expands relative to the hot air pipe (44), and the hot air sent out of the hot air pipe (44) diffuses through the inner wall of each regulating member (42) and flows into the machine body (1); When the discharge pipe (3) is blocked, the material pushes the positioning pipe (41) to slide outward, and the positioning pipe (41) pushes the adjusting parts (42) to turn inward and gather together. The hot air sent out from the hot air pipe (44) impacts and clears the material through the inner wall of each adjusting part (42).

2. The screw conveying device for potassium hexatitanate according to claim 1, characterized in that: The inner wall of the regulating member (42) is provided with a guide strip (420), the width of the guide strip (420) is 0.5-1 mm, and the distance between two adjacent guide strips (420) is 3-4 times the width of the guide strip (420).

3. The screw conveying device for potassium hexatitanate according to claim 2, characterized in that: The guide strips (420) extend radially outward along the inner wall of the adjusting member (42), and a plurality of guide strips (420) are evenly distributed in a spiral shape along the inner wall of the adjusting member (42); The spiral direction of the guide strip (420) is consistent with the rotation direction of the hot air pipe (44).

4. The screw conveying device for potassium hexatitanate according to claim 1, wherein: A fixing column (43) is provided in the hot air pipe (44), and a guide cone (430) is provided at the end of the fixing column (43) close to the adjusting member (42), and the guide cone (430) protrudes from the hot air pipe (44).

5. The screw conveying device for potassium hexatitanate according to claim 4, characterized in that: The outer diameter of the guide cone (430) gradually increases from one end close to the fixed column (43) to the other end.

6. The screw conveying device for potassium hexatitanate according to claim 1, characterized in that: A limiting plate (45) is provided at one end of the positioning tube (41) close to the adjusting member (42), and an air outlet is provided at the center of the limiting plate (45). The inner diameter of the air outlet is not less than the outer diameter formed by each adjusting member (42) in the expanded state.

7. The screw conveying device for potassium hexatitanate according to claim 6, characterized in that: The inner side wall of the limiting plate (45) is provided with a conical ring (450); The outer wall of each adjusting member (42) is provided with an inclined surface (421) matching the conical ring (450); When the positioning tube (41) slides toward the hot air tube (44), the conical ring (450) pushes the inclined surface (421) to cause the adjusting members (42) to turn inward and gather together.

8. The screw conveying device for potassium hexatitanate according to claim 7, characterized in that: A connecting ring (451) is provided on the outer wall of the limiting plate (45), the inner diameter of the connecting ring (451) being consistent with the air outlet hole, and the connecting ring (451) is slidably provided in the connecting hole at the end of the machine body (1), and the end thereof protrudes from the inner wall of the machine body (1).

9. The screw conveying device for potassium hexatitanate according to claim 8, characterized in that: A return spring is provided at the outer end of the positioning tube (41), and the return spring is suitable for squeezing the positioning tube (41) to move in the direction of the machine body (1).

10. The screw conveying device for potassium hexatitanate according to claim 9, characterized in that: A torsion spring is provided at a hinge point between the adjusting member (42) and the hot air pipe (44), and the torsion spring is suitable for pushing the adjusting member (42) to flip and expand outward relative to the hot air pipe (44).

11. A method for conveying potassium hexatitanate using a screw conveyor, characterized in that: The screw conveying device for potassium hexatitanate according to any one of claims 1 to 10 is used, and the conveying method includes: When conveying materials, each regulating member (42) turns outward and expands relative to the hot air pipe (44), and the hot air sent out from the hot air pipe (44) diffuses through the inner wall of each regulating member (42) and flows into the machine body (1); When the discharge pipe (3) is blocked, the material pushes the positioning pipe (41) to slide outward, and the positioning pipe (41) pushes the adjusting parts (42) to turn inward and gather together. The hot air sent out from the hot air pipe (44) impacts and clears the material through the inner wall of each adjusting part (42).

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