Sand baking pipe

Abstract

The utility model belongs to the technical field of sand baking equipment, and particularly discloses a sand baking pipe which comprises a hollow cylinder, a strip-shaped protruding structure is arranged on the surface of the inner wall of the hollow cylinder, the section, in the radial direction of the hollow cylinder, of the strip-shaped protruding structure is in a first arc shape, and the first arc shape comprises a first arc, two linear segments and two second arcs; the circle center of the first arc is inside the first arc, and the circle center of the second arc is outside the second arc; the first arc is located at the top end of the first arc, the two ends of the first arc are sequentially and tangentially connected with the corresponding linear section and the second arc, and the second arc is tangentially connected with the inner wall of the hollow cylinder on the corresponding side. According to the sand baking device, the effects of uniform overturning and full reaction of quartz sand in the sand baking pipe can be achieved.

Description

Technical Field

[0001] The present application belongs to the technical field of sand baking equipment, and more specifically, relates to a sand baking tube. Background Art

[0002] In the prior art, the sand-baking tubes used in the chlorination and sand-baking processes of the high-purity quartz sand purification process are all cylindrical sand-baking tubes. The problem is that the smooth inner wall of the cylindrical sand-baking tube cannot effectively flip the sand into the air when rotating, and the sand cannot exceed the repose angle during the stirring process, and dead zones will be formed at certain specific positions, resulting in the quartz sand being unable to fully react. On the other hand, it may also cause particle size segregation. Utility Model Content

[0003] In view of the defects of the prior art, the purpose of the present application is to provide a baking sand tube, which aims to solve the problem that when the existing baking sand tube is flipped, the quartz sand has a flipping dead zone and cannot fully react.

[0004] To achieve the above-mentioned purpose, the present application provides a baking sand pipe, which includes a hollow cylinder, and a strip-shaped protrusion structure is arranged on the inner wall surface of the hollow cylinder. The strip-shaped protrusion structure has a first arc shape in the radial cross-section of the hollow cylinder. The first arc shape includes a first arc, two straight line segments and two second arcs. The center of the first arc is inside the first arc, and the center of the second arc is outside the second arc. The first arc is located at the top of the first arc, and its two ends are respectively tangently connected to the corresponding straight line segment and the second arc in sequence, and the second arc is respectively tangently connected to the inner wall of the corresponding side hollow cylinder.

[0005] By designing a strip-shaped protrusion structure with an arc surface, the quartz sand is thrown into the air with the help of the strip-shaped protrusion structure when the sand baking cylinder is turned over. At the same time, the dead zone-free design is used to avoid the particle size segregation of the quartz sand, thereby making the quartz sand evenly stirred and fully reacted.

[0006] Furthermore, the strip-shaped protrusion structures are arranged along the axial direction of the hollow cylinder or arranged in a spiral shape.

[0007] Furthermore, the length of the strip-shaped protrusion structure is greater than or equal to the length of the hollow cylinder.

[0008] Furthermore, the strip-shaped protrusion structure is a straight-line protrusion structure or a wavy protrusion structure.

[0009] Furthermore, the strip-shaped protrusion structure is integrally formed with the hollow cylinder.

[0010] Furthermore, at least two fixing ridges are arranged on the outer side wall of the hollow cylinder along the axial direction of the hollow cylinder, and the fixing ridges are used to be fixedly connected to external equipment of the sand baking tube.

[0011] Furthermore, the fixing ridge is integrally formed with the hollow cylinder.

[0012] Furthermore, the strip-shaped protrusion structure and the fixed ridge are arranged correspondingly.

[0013] Furthermore, the bottom surface width of the strip-shaped protrusion structure is smaller than the bottom surface width of the fixed ridge.

[0014] Furthermore, the radius of the second arc is 1.5 times the radius of the first arc.

[0015] In general, the above technical solutions conceived by this application have the following technical advantages compared with the prior art:

[0016] 1. A strip-shaped protrusion structure is arranged on the inner wall of the hollow cylinder of the sand baking tube, and the surface of the strip-shaped protrusion structure is an arc surface, that is, there is no angle; the strip-shaped protrusion structure is smoothly connected to the inner wall of the hollow cylinder to form an arc surface, which can avoid the existence of a dead zone at the connection between the strip-shaped protrusion structure and the inner wall of the cylinder; through the above design, the quartz sand can be thrown into the air with the help of the strip-shaped protrusion structure when the sand baking tube is turned over, and at the same time, the effect of avoiding the particle size segregation of the quartz sand is achieved through the design without dead zones, so that the quartz sand can be evenly stirred and fully reacted.

[0017] 2. The strip-shaped protrusion structure in the present application is designed as a linear protrusion structure or a wavy protrusion structure, and can be arranged along the axial direction of the hollow cylinder or arranged in a spiral shape, which can achieve effective multiple scattering of quartz sand, thereby enhancing the effect of the quartz sand reaction.

[0018] 3. The outer wall of the hollow cylinder of the present application is also designed with a fixed ridge corresponding to the strip-shaped convex structure, which is convenient for assembling and fixing the sand baking cylinder and is more stable when flipped; the bottom width of the fixed ridge is greater than the bottom width of the strip-shaped convex structure to achieve a more stable fixing effect.

[0019] 4. In the present application, the strip-shaped protrusion structure and the fixed protrusion are integrally formed with the sand-baking tube, and the surfaces of the two protrusions are arc-shaped, which is convenient for processing. Compared with the protrusions with angles, the arc-shaped protrusions can prevent the strip-shaped protrusion structure and the fixed protrusion from being damaged due to bumps during processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic cross-sectional view of a baking sand tube provided in Example 1 of the present application;

[0021] Figure 2 This is a schematic diagram of the appearance of the baked sand tube provided in Example 1 of the present application;

[0022] Figure 3 It is a projection relationship diagram of the spirally arranged linear protrusion structure and the central axis of the hollow cylinder provided in Example 2 of the present application;

[0023] Figure 4 This is a schematic diagram of the shape of a wavy protrusion structure provided in Example 3 of the present application.

[0024] In all the drawings, the same reference numerals are used to represent the same elements or structures, wherein: 1-hollow cylinder, 2-strip-shaped protruding structure, 3-first arc, 31-first circular arc, 32-straight segment, 33-second circular arc, 4-straight protruding structure, 5-wavy protruding structure, 6-fixed ridge, 7-connecting point. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0026] Example 1

[0027] This embodiment provides a baked sand pipe, such as Figure 1 and 2 As shown, the baked sand pipe includes a hollow cylinder 1, the inner wall surface of the hollow cylinder 1 is along Figure 2 The strip-shaped protrusion structure 2 is arranged in the axial direction, and the outer surface of the strip-shaped protrusion structure 2 is a first arc 3, as shown in FIG. Figure 1 As shown, the height H of the first arc 3 is greater than the width L of its base, the radial cross-section of the first arc 3 along the arrow of the hollow cylinder 1 is the first arc 3, and the first arc 3 is tangently connected to the inner wall of the hollow cylinder 1. Since the cross-section of the strip-like protrusion structure 2 is an arc shape, the surface of the strip-like protrusion structure has no angles, and its bottom is tangent to the connection with the inner wall of the hollow cylinder 1, so the connection 7 also has no angles, thereby avoiding the existence of a flipping dead zone.

[0028] Specifically, the first arc 3 includes a first arc 31, two straight line segments 32 and two second arcs 33, and the first arc 3 is a bilaterally symmetrical structure, the center of the first arc 31 is inside the first arc 3, and the center of the second arc 33 is outside the second arc 3; the first arc 31 is located at the top of the first arc 3, and its two ends are tangentially connected to the corresponding straight line segments 32 and the second arc 33 in sequence, and the second arc 33 is tangentially connected to the inner wall of the corresponding side hollow cylinder 1 respectively; the above design makes the strip-shaped protrusion structure have edges of a certain height, which can achieve a better stirring effect.

[0029] In other preferred embodiments, the radius r of the first arc 31 is 1 and the radius r of the second arc 32 2 There is the following relationship: 2 =1.5r 1, which can ensure that the strip-shaped protrusion structure 2 is well-proportioned, has a moderate height, and avoids dead zones; the length l of the straight line segment can be located at r 1 and r 2 The specific length is determined by factors such as the inner diameter of the hollow cylinder 1, the space and the required stirring effect.

[0030] In this embodiment, the strip-shaped protrusion structures 2 are linear in shape, and each linear strip-shaped protrusion structure 2 is parallel to the central axis of the hollow cylinder 1 , and each strip-shaped protrusion structure 2 has the same length as the hollow cylinder 1 .

[0031] In this embodiment, there are 6 strip-like protrusion structures 2, and the 6 strip-like protrusion structures are evenly arranged at equal intervals along the axial direction of the hollow cylinder 1, and the length of each strip-like protrusion structure is the same as the length of the hollow cylinder 1; when the hollow cylinder 1 is flipped, the internal quartz sand can be thrown into the hollow area in the sand baking tube with the help of the strip-like protrusion structures 2, thereby achieving uniform flipping and avoiding particle size segregation.

[0032] In this embodiment, the strip-shaped protrusion structure 2 is integrally formed with the hollow cylinder 1, and the specific preparation process is the existing technology in the field, which will not be described here.

[0033] In this embodiment, at least two fixed ribs 6 are arranged on the outer wall of the hollow cylinder 1 along the central axis of the hollow cylinder 1 , and the fixed ribs 6 are used to be fixedly connected to external equipment of the sand baking tube.

[0034] In this embodiment, the aforementioned fixed rib 6 is also integrally formed with the hollow cylinder 1, and the strip-shaped protrusion structure 2 and the fixed rib 6 can be arranged one by one. The radial cross-section of the fixed rib 6 along the hollow cylinder 1 as indicated by the arrow is also arc-shaped, which is easy to process.

[0035] In other preferred embodiments, the number of the aforementioned strip-like protrusion structures 2 can be more than 6 or less than 6. When using a baking sand tube with multiple strip-like protrusion structures, the quartz sand is lifted into the air, which increases the reaction area. Under the same conditions, the more strip-like protrusion structures there are, the shorter the time to achieve the same reaction effect. For example, a baking sand tube with 2 protrusion structures requires 1h47min to achieve the desired reaction effect, a baking sand tube with 4 protrusion structures requires 1h39min, a baking sand tube with 6 protrusion structures requires 1h12min, and a baking sand tube with 8 protrusion structures requires 1h17min.

[0036] In a preferred embodiment, the plurality of strip-shaped protrusion structures 2 can be arranged evenly or unevenly, as long as there is a spacing between two adjacent strip-shaped protrusion structures; the bottom width of the aforementioned fixed ridge 6 can be greater than the bottom width of the strip-shaped protrusion structure 2 to achieve a better fixing effect.

[0037] In this embodiment, the height of the strip-shaped protruding structure 2 is related to the static repose angle of the material to be dried.

[0038] Example 2

[0039] The difference between the baked sand pipe provided in this embodiment and the embodiment 1 is that in this embodiment, a plurality of linear protrusion structures 4 are arranged on the inner wall of the hollow cylinder 1, and the plurality of linear protrusion structures 4 are arranged in a spiral shape on the inner wall of the hollow cylinder 1, such as Figure 3 As shown, the projection of the central axis of the hollow cylinder 1 on its inner wall intersects with each corresponding straight-line protrusion structure 4, that is, there is an angle between the two. This arrangement can also achieve the effect of avoiding particle size segregation, uniform flipping and complete reaction of quartz sand.

[0040] In other preferred embodiments, when the strip-shaped protrusion structure 2 is arranged in a spiral shape, the strip-shaped protrusion structure 2 can also be one strip.

[0041] Example 3

[0042] The difference between this embodiment and embodiment 1 is that the strip-shaped protrusion structure 2 is as follows Figure 4 The wave-shaped protrusion structure 5 (or S-shaped protrusion structure) shown has uniform thickness; and a plurality of wave-shaped protrusion structures 5 are evenly arranged along the axial direction of the hollow cylinder 1.

[0043] In other preferred embodiments, a plurality of wavy protrusion structures 5 or a single wavy protrusion structure 5 is arranged in a spiral shape on the inner wall 1 of the hollow cylinder, that is, the projection of the central axis of the hollow cylinder 1 on the inner wall of the hollow cylinder 1 is staggered with the wavy protrusion structure 5. This design can achieve better effects of avoiding particle size segregation, uniform flipping and complete reaction of quartz sand.

[0044] In general, there is no overturning dead zone in the sand baking tube designed in the present application, which can effectively flip the sand into the air, so that the sand exceeds the repose angle during the stirring process to avoid accumulation, further promote the full reaction of the quartz sand, and avoid the particle size segregation of the quartz sand.

[0045] It should be understood that expressions such as "include" and "may include" used in this application indicate the existence of the disclosed functions, operations or constituent elements, and do not limit one or more additional functions, operations and constituent elements. In this application, terms such as "include" and / or "have" may be interpreted as indicating specific characteristics, numbers, operations, constituent elements, components or combinations thereof, but may not be interpreted as excluding the existence or possibility of adding one or more other characteristics, numbers, operations, constituent elements, components or combinations thereof.

[0046] It should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0047] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0048] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0049] It will be easily understood by those skilled in the art that the above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A baked sand pipe, characterized in that: The sand-baking tube comprises a hollow cylinder (1), the inner wall surface of the hollow cylinder (1) is provided with a strip-shaped protrusion structure (2), the cross section of the strip-shaped protrusion structure (2) along the radial direction of the hollow cylinder (1) presents a first arc shape (3), the first arc shape (3) comprises a first arc (31), two straight line segments (32) and two second arcs (33), the center of the first arc (31) is inside the first arc shape (3), and the center of the second arc (33) is outside the first arc shape (3); the first arc (31) is located at the top of the first arc shape (3), and its two ends are respectively tangently connected to the corresponding straight line segment (32) and the second arc (33) in sequence, and the second arc (33) is respectively tangently connected to the inner wall of the corresponding side hollow cylinder (1).

2. A sand-baked pipe as claimed in claim 1, characterized in that: The strip-shaped protrusion structures (2) are arranged along the axial direction of the hollow cylinder (1) or in a spiral shape.

3. The sand-baked tube according to claim 1, characterized in that: The length of the strip-shaped protruding structure (2) is greater than or equal to the length of the hollow cylinder (1).

4. The sand-baked tube according to claim 1, characterized in that: The strip-shaped protrusion structure (2) is a straight-line protrusion structure (4) or a wavy protrusion structure (5).

5. The sand-baked tube according to claim 1, characterized in that: The strip-shaped protrusion structure (2) and the hollow cylinder (1) are formed integrally.

6. The baked sand pipe according to any one of claims 1 to 5, characterized in that: At least two fixing ridges (6) are arranged on the outer wall of the hollow cylinder (1) along the axial direction of the hollow cylinder (1), and the fixing ridges (6) are used to be fixedly connected to external equipment of the sand baking tube.

7. The baked sand pipe according to claim 6, characterized in that: The fixed ridge (6) and the hollow cylinder (1) are formed integrally.

8. The baked sand pipe according to claim 6, characterized in that: The strip-shaped protruding structure (2) and the fixed protruding ridge (6) are arranged correspondingly.

9. The baked sand pipe according to claim 6, characterized in that: The bottom surface width of the strip-shaped protruding structure (2) is smaller than the bottom surface width of the fixed ridge (6).

10. The baked sand pipe according to claim 1, characterized in that: The radius of the second circular arc (33) is 1.5 times the radius of the first circular arc (31).

Images