Potassium hexatitanate and its delivery method

Abstract

The present application belongs to the technical field of conveying, and particularly relates to a spiral conveying device for potassium hexatitanate and a conveying method thereof. The spiral conveying device for potassium hexatitanate comprises: a feeding hopper arranged at the top of the feeding end of a machine body; a discharging pipe arranged at the bottom of the discharging end of the machine body; a hot air adjusting mechanism comprising: a positioning pipe slidingly arranged at the end of the machine body; a hot air pipe rotatably arranged in the positioning pipe and in communication with a hot air machine; and a plurality of adjusting members hingedly connected at one end of the hot air pipe and in the shape of a circular arc. When conveying material, each adjusting member is turned outward and expanded relative to the hot air pipe, and the hot air sent out from the hot air pipe is diffused to the machine body through the inner wall of each adjusting member. When the discharging pipe is blocked, the material pushes the positioning pipe to slide outward, the positioning pipe pushes each adjusting member to turn inward and gather, and the hot air sent out from the hot air pipe impacts and clears the material through the inner wall of each adjusting member.

Description

Technical Field

[0001] This invention belongs to the field of conveying technology, specifically relating to a loading conveyor, and more particularly to a screw conveyor for potassium hexatitanate and its conveying method. Background Technology

[0002] When potassium hexatitanate powder is used as a flame-retardant filler (such as automotive brake pads), the moisture content needs to be controlled to be <5%. Therefore, potassium hexatitanate powder needs to be dried before feeding.

[0003] In related technologies, a conveyor belt dryer is often used to dry powdered potassium hexatitanate. This method causes the surface powder to dehydrate and form a shell quickly, while the internal moisture cannot escape, resulting in a lower yield.

[0004] When using a screw conveyor for feeding, hot air is conveyed into the screw conveyor to dry powdered potassium hexatitanate. The powdered potassium hexatitanate will form a bridging phenomenon at the discharge pipe, causing material to accumulate. Although the rotation of the screw conveyor during the conveying process can reduce the internal moisture, after long-term operation, the accumulated material will also block the hot air outlet, affecting the normal drying of the material.

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

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

[0007] This disclosure provides at least one embodiment of a screw conveyor for potassium hexatitanate and its operating method.

[0008] In a first aspect, embodiments of this disclosure provide a screw conveyor for potassium hexatitanate, comprising:

[0009] The feeding hopper is located at the top of the feeding end of the machine body;

[0010] The feeding pipe is located at the bottom of the discharge end of the machine body;

[0011] The hot air conditioning mechanism includes:

[0012] The positioning tube is slidably disposed at the end of the machine body and located above the feeding tube;

[0013] A hot air duct, which is rotatably installed inside the positioning tube and connected to the hot air blower;

[0014] Several adjusting components, one end of which is hinged to the end of the hot air duct and is in the shape of an arc;

[0015] During material conveying, each adjusting component flips outward and expands relative to the hot air pipe, and the hot air delivered from the hot air pipe flows into the machine body through the inner wall of each adjusting component in a diffused manner.

[0016] When the feed pipe is blocked, the material pushes the positioning pipe to slide outward, and the positioning pipe pushes the various adjusting parts to flip and gather inward. The hot air sent out from the hot air pipe impacts and clears the material through the inner wall of each adjusting part.

[0017] In one optional embodiment, the inner wall of the adjusting member is provided with a guide strip, the guide strip width is 0.5-1mm, and the spacing between two adjacent guide strips is 3-4 times the width of the guide strip.

[0018] In one 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;

[0019] The spiral direction of the guide strip is consistent with the rotation direction of the hot air duct.

[0020] In one optional embodiment, a fixed column is provided inside the hot air duct, and a guide cone is provided at the end of the fixed column near the adjusting member, the guide cone protruding from the hot air duct.

[0021] In one alternative embodiment, the outer diameter of the guide cone gradually increases from one end near the fixed post to the other end.

[0022] In one optional embodiment, a limiting plate is provided at one end of the positioning tube near the adjusting member, and an air outlet is opened at the center of the limiting plate. The inner diameter of the air outlet is not less than the outer diameter formed by each adjusting member in the expanded state.

[0023] In one optional embodiment, a conical ring is provided on the inner sidewall of the limiting disk;

[0024] Each of the aforementioned adjusting components has an inclined surface on its outer wall that matches the conical ring;

[0025] When the positioning tube slides towards the hot air duct, the conical ring pushes against the inclined surface, causing each adjusting component to flip inward and gather together.

[0026] In one optional embodiment, a connecting ring is provided on the outer wall of the limiting plate. The inner diameter of the connecting ring is the same as that of the air outlet. The connecting ring is slidably disposed in the communicating hole at the end of the machine body, and the end protrudes from the inner wall of the machine body.

[0027] In one optional embodiment, a return spring is provided at the outer end of the positioning tube, the return spring being adapted to press the positioning tube to move toward the machine body.

[0028] In one alternative embodiment, a torsion spring is provided at the hinge point between the adjusting member and the hot air duct, the torsion spring being adapted to push the adjusting member to rotate and expand outward relative to the hot air duct.

[0029] Secondly, embodiments of this disclosure also provide a method for conveying potassium hexatitanate using a screw conveyor, the method comprising:

[0030] When conveying materials, each adjusting component flips outward and expands relative to the hot air pipe, and the hot air delivered from the hot air pipe flows into the machine body through the inner wall of each adjusting component in a diffused manner.

[0031] When the feed pipe is blocked, the material pushes the positioning pipe to slide outward, and the positioning pipe pushes the various adjusting parts to flip and gather inward. The hot air sent out from the hot air pipe impacts and clears the material through the inner wall of each adjusting part.

[0032] The beneficial effects of this invention are that it provides a screw conveyor device and method for potassium hexatite. Through a dynamically adjustable hot air regulating mechanism, it efficiently solves the problem of material drying. During normal hot air conveying, each regulating component flips and expands outward, causing the hot air to form a diffused airflow, allowing the hot air to penetrate the powder layer evenly and increasing the contact area between the incoming hot air and the powder material. The unique material-driven positioning tube movement trigger mechanism, when the powder material blocks the feed pipe, pushes each regulating component inward to flip and converge, thereby forming a high-speed hot air jet, increasing the impact force of the hot air and preventing material blockage.

[0033] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention are realized and obtained through the structures particularly pointed out in the description and the drawings.

[0034] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the specific embodiments or related technologies of the present invention, the drawings used in the description of the specific embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0036] Figure 1 A perspective view of a screw conveyor for potassium hexatitanate provided in an embodiment of this disclosure;

[0037] Figure 2 A perspective view of the hot air regulating mechanism provided in an embodiment of this disclosure;

[0038] Figure 3 A cross-sectional perspective view of the hot air regulating mechanism provided in an embodiment of this disclosure;

[0039] Figure 4 A perspective view of the inward convergence state of each adjusting member provided in the embodiments of this disclosure;

[0040] Figure 5 This is a schematic diagram of the airflow diffusion state during normal operation, provided in an embodiment of this disclosure.

[0041] In the picture:

[0042] 1. Machine body; 2. Feeding hopper; 3. Discharge pipe; 4. Hot air regulating mechanism; 41. Positioning pipe; 42. Adjusting component; 420. Guide strip; 421. Inclined surface; 43. Fixed column; 430. Guide cone; 44. Hot air pipe; 45. Limiting plate; 450. Conical ring; 451. Connecting ring. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0044] In this document, when it is mentioned that a first component is located on a second component, this can mean that the first component can be directly formed on the second component, or that a third component can be inserted between the first and second components. Furthermore, in the accompanying drawings, the thickness of the components may be exaggerated or reduced for the purpose of effectively describing the technical content.

[0045] In this document, exemplary 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…” modify an entire column of elements when following a column 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.

[0046] The terminology used herein is for the purpose of describing specific exemplary configurations only and is 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 stated herein. The terms “comprising,” “including,” and “having” are inclusive and thus specify the presence of features, steps, operations, elements, and / or components, but do not preclude 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 construed as requiring them to be performed in the specific order discussed or shown, unless specifically identified as such. Additional or alternative steps may be employed.

[0047] As used herein, the phrases “in one embodiment,” “according to one embodiment,” “in some embodiments,” etc., generally refer to the fact that a particular feature, structure, or characteristic following the phrase can be included in at least one embodiment of this disclosure. Therefore, a particular feature, structure, or characteristic can be included in more than one embodiment of this disclosure, such that these phrases do not necessarily refer to the same embodiment. As used herein, the terms “example,” “exemplary,” etc., 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 superior to other implementations, aspects, or designs. Rather, the use of the terms “example,” “exemplary,” etc., is intended to present concepts in a specific manner.

[0048] Research has found that in related technologies, a conveyor belt dryer is often used to dry powdered potassium hexatitanate. This method causes the surface powder to dehydrate and form a shell quickly, but the internal moisture cannot escape, resulting in a lower yield.

[0049] When using a screw conveyor for feeding, hot air is conveyed into the screw conveyor to dry powdered potassium hexatitanate. The powdered potassium hexatitanate will form a bridging phenomenon at the discharge pipe, causing material to accumulate. Moreover, the accumulated material will block the hot air outlet, affecting the normal drying of the material.

[0050] Therefore, how to solve the above-mentioned defects is a technical problem that urgently needs to be solved in this field.

[0051] The defects in the above solutions and the reasons for their occurrence are the results of the inventors' practice and careful research. Therefore, the discovery process of the above problems and the solutions proposed in this disclosure should be considered as the inventors' contributions to this disclosure.

[0052] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0053] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0054] like Figures 1 to 5 As shown, at least one embodiment provides a screw conveyor for potassium hexatitanate, comprising: a feeding hopper 2, which is disposed at the top of the feeding end of the machine body 1; the machine body 1 is a screw conveyor. The feeding hopper 2 is welded to the top feeding end of the machine body 1, has a volume of 50L, and is used to hold potassium hexatitanate powder to be dried (moisture content 8%-12%). A discharge pipe 3 is disposed at the bottom of the discharge end of the machine body 1; a flange is connected to the bottom discharge end of the machine body 11, with an inner diameter of 80mm, and a pneumatic valve at the end to control the discharge flow rate. A drive motor is disposed at one end of the machine body 1 near the feeding hopper 2, and a screw conveyor rod is disposed inside the machine body 1. The drive motor drives the screw conveyor rod to rotate, so as to convey the material in the feeding hopper 2 to the discharge pipe 3.

[0055] Reference Appendix Figure 3 The hot air regulating mechanism 4 includes: a positioning tube 41, which is slidably disposed at the end of the machine body 1 and located above the feed pipe 3; a limiting plate 45 is provided at one end of the positioning tube 41 near the adjusting member 42, and an air outlet is opened at the center of the limiting plate 45, the inner diameter of the air outlet being 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; each adjusting member 42 has an inclined surface 421 matching the conical ring 450 on its outer wall; wherein, when the positioning tube 41 slides towards 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 side wall of the limiting plate 45, the inner diameter of the connecting ring 451 being consistent with the air outlet, the connecting ring 451 being slidably disposed in the communicating hole at the end of the machine body 1, and the end protruding from the inner wall of the machine body 1. A return spring is provided at the outer end of the positioning tube 41. The return spring is adapted to press the positioning tube 41 to move towards the machine body 1. The return spring always pushes the positioning tube 41 to move to the left and abut against the end wall of the machine body 1. A hot air duct 44 is rotatably installed inside the positioning tube 41 and is connected to a hot air blower. The hot air duct 44 is rotatably installed inside the positioning tube 41 via a bearing, and its right end is connected to a hot air blower hose (hot air temperature 150℃±10℃). A stainless steel fixing post 43 is coaxially fixed inside the hot air duct 44. The left end of the fixing post 43 extends out of the hot air duct 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 duct 44).

[0056] Several adjusting members 42, one end of which is hinged to the end of the hot air duct 44 and is arc-shaped; the adjusting members 42 are flexible. A torsion spring is provided at the hinge point between the adjusting member 42 and the hot air duct 44, and the torsion spring is adapted to push the adjusting member 42 to flip and expand outward relative to the hot air duct 44. The regulating components 42 consist of six pieces, each made of 304 stainless steel sheet stamped into an arc shape. One end of each component is hinged to the left end of the hot air pipe 44 via a pivot. A torsion spring (torque 0.8 N·m) is installed at the hinge point to maintain the outward expansion trend of the regulating components 42. During material conveying, each regulating component 42 flips and expands outward relative to the hot air pipe 44, and the hot air delivered from the hot air pipe 44 diffuses through the inner walls of each regulating component 42 into the machine body 1. When the discharge pipe 3 is blocked, the material pushes the positioning tube 41 to slide outward, and the positioning tube 41 pushes each regulating component 42 to flip and converge inward. The hot air delivered from the hot air pipe 44 impacts and clears the material through the converged inner walls of each regulating component 42. The dynamically adjustable hot air regulating mechanism 4 effectively solves the problem of material drying. During normal hot air conveying, each regulating component 42 flips and expands outward, causing the hot air to form a diffused airflow, allowing the hot air to penetrate the powder layer evenly and increasing the contact area between the incoming hot air and the powder material. The unique material-driven positioning tube 41 is triggered to move. When powder material blocks the feed tube 3, the adjusting components 42 are pushed inward and rotated to gather, thereby forming a high-speed hot air jet, which increases the impact force of the hot air and avoids material blockage.

[0057] Continue to refer to the appendix Figure 3 The inner wall of the adjusting member 42 is provided with guide strips 420, the width of which is 0.5-1mm, and the spacing between two adjacent guide strips 420 is 3-4 times the width of the guide strip 420. The guide strips 420 extend radially outward along the inner wall of the adjusting member 42, and several guide strips 420 are evenly distributed in a spiral shape along the inner wall of the adjusting member 42; wherein, the spiral direction of the guide strips 420 is consistent with the rotation direction of the hot air pipe 44. The guide strips 420 of the six adjusting members 42 together form a right-hand spiral channel (matching the clockwise rotation direction of the hot air pipe 44).

[0058] The specific working principle is as follows:

[0059] Under normal conveying and drying conditions, refer to the attached document. Figure 3 Potassium hexatitanate powder falls from the feed hopper 2 into the machine body 1; the hot air pipe 44 rotates at 30 rpm, and hot air at 150℃ (flow rate 10 m³ / min) is introduced; the adjusting component 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 by the spiral guide strip 420, which evenly heats 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 reset spring. Figure 3 F1 in the text indicates that the positioning tube 41 moves away from the hot air tube 44. Figure 3 The arrows in the diagram indicate the direction of hot air flow.

[0060] For the status of blockage clearing, please refer to the attached document. Figure 4 and Figure 5 When potassium hexatitanate powder forms a bridging blockage at the feed pipe 3, the accumulated material pushes the connecting ring 451 to the right; the positioning pipe 41 drives the limiting plate 45 to the right, and the conical ring 450 squeezes the inclined surface 421 of the adjusting component 42, forcing the 6 adjusting components 42 to overcome the torsion spring force and gather inward; the hot air is gathered 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 component 42 to rotate synchronously, so that the gathered airflow produces 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 material to move in the direction of the hot air tube 44. Figure 5 The arrows in the diagram indicate the direction of hot air flow.

[0061] During the reset process, after the blockage is cleared, the material pressure disappears, and the reset spring pushes the positioning tube 41 to the left; the limit plate 45 disengages from the adjusting component 42, and the torsion spring drives the adjusting component 42 to expand back to the working state.

[0062] At least one embodiment provides a conveying method for potassium hexatitanate using a screw conveyor, the conveying method comprising:

[0063] When conveying materials, each adjusting component 42 flips outward and expands relative to the hot air pipe 44, and the hot air sent out from the hot air pipe 44 flows into the machine body 1 through the inner wall of each adjusting component 42 in a diffuse manner.

[0064] When the feed pipe 3 is blocked, the material pushes the positioning pipe 41 to slide outward, and the positioning pipe 41 pushes each adjusting component 42 to flip inward and gather. The hot air sent out from the hot air pipe 44 impacts and clears the material through the gathered shape of the inner wall of each adjusting component 42.

[0065] In the description of the embodiments of the present invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention based on the specific circumstances.

[0066] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention 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, and therefore should not be construed as a limitation of the invention. Furthermore, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence unless expressly indicated herein. Therefore, without departing from the teachings of the exemplary embodiments, the first element, component, region, layer, or segment discussed above may be referred to as a second element, component, region, layer, or segment.

[0067] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A screw conveyor for potassium hexatite, characterized in that, include: The feeding hopper (2) is located at the top of the feeding end of the machine body (1); The feeding pipe (3) is located at the bottom of the discharge end of the machine body (1); Hot air regulating mechanism (4), including: The positioning tube (41) is slidably disposed at the end of the machine body (1) and located above the feeding tube (3); Hot air duct (44), which is rotatably disposed inside the positioning tube (41) and connected to the hot air blower; Several adjusting parts (42) are hinged at one end to the end of the hot air pipe (44) and are in the shape of an arc; When conveying materials, each adjusting component (42) flips outward relative to the hot air pipe (44) and expands. The hot air sent out from the hot air pipe (44) diffuses through the inner wall of each adjusting component (42) into the machine body (1). When the feed pipe (3) is blocked, the material pushes the positioning pipe (41) to slide outward, and the positioning pipe (41) pushes each adjusting component (42) to flip inward and gather. The hot air sent out from the hot air pipe (44) impacts and clears the material through the gathered shape of the inner wall of each adjusting component (42). A limiting plate (45) is provided at one end of the positioning tube (41) near the adjusting member (42). An air outlet is opened 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. A conical ring (450) is provided on the inner side wall of the limiting disk (45). Each of the aforementioned adjusting components (42) has an inclined surface (421) on its outer wall that matches the conical ring (450); When the positioning tube (41) slides toward the hot air tube (44), the conical ring (450) pushes against the inclined surface (421) so that each adjusting component (42) flips inward and gathers together; A torsion spring is provided at the hinge point between the adjusting member (42) and the hot air pipe (44), and the torsion spring is adapted to push the adjusting member (42) to flip and expand outward relative to the hot air pipe (44).

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

3. The screw conveyor for potassium hexatitanate as described in claim 2, characterized in that, The guide strip (420) extends radially outward along the inner wall of the adjusting member (42), and several 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 conveyor for potassium hexatitanate as described in claim 1, characterized in that, A fixed column (43) is provided inside the hot air pipe (44), and a guide cone (430) is provided at the end of the fixed column (43) near the adjusting member (42), and the guide cone (430) protrudes from the hot air pipe (44).

5. The screw conveyor for potassium hexatitanate as described in claim 4, characterized in that, The outer diameter of the guide cone (430) gradually increases from one end near the fixed column (43) to the other end.

6. The screw conveyor for potassium hexatitanate as described in claim 1, 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) is consistent with the air outlet. The connecting ring (451) is slidably disposed in the connecting hole at the end of the machine body (1), and the end protrudes from the inner wall of the machine body (1).

7. The screw conveyor for potassium hexatitanate as described in claim 6, characterized in that, A reset spring is provided at the outer end of the positioning tube (41), and the reset spring is adapted to press the positioning tube (41) to move towards the machine body (1).

8. A method for conveying potassium hexatite using a screw conveyor, characterized in that, The conveying method using the screw conveyor for potassium hexatitanate as described in any one of claims 1-7 includes: When conveying materials, each adjusting component (42) flips 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 adjusting component (42) into the machine body (1); When the feed pipe (3) is blocked, the material pushes the positioning pipe (41) to slide outward, and the positioning pipe (41) pushes each adjusting component (42) to flip and gather inward. The hot air sent out from the hot air pipe (44) impacts and clears the material through the gathered shape of the inner wall of each adjusting component (42).

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