Calcined sand turning mechanism and calcining device

Abstract

The invention relates to the field of calcination, and particularly provides a calcined sand turning mechanism and a calcination device. The calcined sand turning mechanism comprises a base; the outer cylinder is horizontally arranged along the axis of the outer cylinder, the outer cylinder is rotatably arranged on the base, and the side wall surface of the outer cylinder is wavy; the inner cylinder is rotatably arranged in the outer cylinder and is coaxial with the outer cylinder, and the side wall surface of the inner cylinder is wavy; the springing devices are telescopically arranged on the side wall of the inner cylinder; the multiple springing devices are arranged in the circumferential direction of the inner cylinder at intervals and are perpendicular to the side wall face of the inner cylinder. According to the scheme, the side walls of the inner cylinder and the outer cylinder of the calcined sand turning mechanism are both arranged to be wavy, and the telescopic springing device is arranged on the side wall surface of the inner cylinder, so that in the calcining process, turning of materials in the inner cylinder and the outer cylinder is more irregular; therefore, the situation that large-size materials are accumulated on the upper portion and small-size materials are deposited on the lower portion is weakened, the calcination quality is improved, and the calcination efficiency is improved.

Description

Technical Field

[0001] The invention relates to the field of calcining devices, in particular to a calcining sand turning mechanism and a calcining device. Background Art

[0002] When calcining materials (such as quartz sand) in a calcining device, the thick accumulation of materials often leads to poor calcination effects and low calcination efficiency. At the same time, due to the different sizes of materials, during the calcination process, when the materials roll relative to the calcining device, it is easy to form a situation where large particles are accumulated on the top and small particles are deposited on the bottom, which will lead to incomplete calcination of large particles and affect the calcination effect. In addition, the materials are easy to adhere to the calcining device, which will not only further affect the calcination quality and reduce the calcination efficiency, but also increase the difficulty of subsequent cleaning work. Summary of the invention

[0003] One purpose of the present invention is to improve the calcination quality and the calcination efficiency.

[0004] Another object of the invention is to reduce the risk of material adhesion on the calcining device.

[0005] In particular, the present invention provides a calcined sand turning mechanism, comprising: a base; an outer cylinder, horizontally arranged along its axis, rotatably arranged on the base, and the side wall surface of the outer cylinder is wavy; an inner cylinder, rotatably arranged inside the outer cylinder, coaxially arranged with the outer cylinder, and the side wall surface of the inner cylinder is wavy; a plurality of elastic devices, telescopically arranged on the side wall of the inner cylinder; the plurality of elastic devices are arranged at intervals along the circumference of the inner cylinder and are perpendicular to the side wall surface of the inner cylinder.

[0006] Furthermore, each elastic device is arranged in the peak area of ​​the inner tube protruding toward the outer tube; one end of each elastic device extends into the inner tube, and the other end contacts the side wall surface of the outer tube; the elastic device is configured to repeatedly expand and contract relative to the inner tube under the pressure of the side wall surface of the outer tube when the outer tube rotates relative to the inner tube.

[0007] Furthermore, the elastic device includes: an elastic plate, one end of which extends into the inner tube and the other end contacts the side wall of the outer tube; at least one limiting plate is arranged on the elastic plate and is located between the inner tube and the outer tube; at least one first limiting spring is arranged between at least one limiting plate and the inner tube, one end is connected to the limiting plate and the other end is connected to the side wall of the inner tube.

[0008] Furthermore, the elastic device also includes: a cavity, which is arranged inside the elastic plate; at least one opening, which is arranged on the side wall of the elastic plate in an area close to the inner cylinder and is connected to one end of the cavity close to the inner cylinder; at least one stopper, which is telescopically movably arranged at the at least one opening, and at least one stopper is provided with a chamfer and a wedge-shaped surface recessed inwardly on the side surface facing the outer cylinder; at least one second limit spring, which is arranged in the cavity along the direction of the opening, one end of which is connected to the at least one stopper, and the other end of which is connected to the elastic plate; a push block, which is arranged in the cavity, and one end of the push block facing the stopper is formed with an outwardly protruding inclined surface adapted to the stopper; the elastic plate is configured to repeatedly bend and deform under the pressure of the side wall of the outer cylinder when the inner cylinder and the outer cylinder rotate relative to each other, thereby pushing the push block to repeatedly press against at least one stopper, so that at least one stopper repeatedly telescopes and moves at the opening.

[0009] Furthermore, the calcined sand turning mechanism also includes: a material-shifting shaft, which is rotatably arranged in the inner cylinder and axially close to the side wall of the inner cylinder; a material passage is formed on the side wall of the inner cylinder in an area close to the material-shifting shaft, and the material passage is arranged along the axial direction of the inner cylinder to connect the inner cylinder and the outer cylinder.

[0010] Furthermore, the calcined sand turning mechanism also includes: a first motor, which is arranged on the end surface of the inner cylinder and connected to the turning shaft.

[0011] Furthermore, the calcined sand turning mechanism also includes: a feed hole, which is arranged on the end face of the inner tube; a discharge hole, which is arranged on the end face of the outer tube and is located between the side wall of the outer tube and the side wall of the inner tube; a sealing plate, which is arranged on the end face of the outer tube and is used to close the discharge hole; and a cylinder, which is arranged on the base and connected to the sealing plate.

[0012] Furthermore, the calcined sand turning mechanism also includes: a second motor, which is arranged on the base; a pulley, which is arranged at the center of the end surface of the inner cylinder; and a belt, which is sleeved on the pulley and the second motor.

[0013] Furthermore, the calcined sand turning mechanism also includes: at least one annular track, which is circumferentially arranged at the end of the outer cylinder; and at least one supporting wheel, which is arranged on the base and cooperates with the at least one annular track.

[0014] In particular, the present invention further provides a calcining device, comprising: any one of the above-mentioned calcining sand turning mechanisms; and a heating device, which is arranged on the outer cylinder or outer periphery of the calcining sand turning mechanism.

[0015] The beneficial effects of the present invention are: The calcined sand turning mechanism and calcining device of the present invention configure the side walls of the inner cylinder and the outer cylinder of the calcined sand turning mechanism to be wavy, so that during the calcining process, when the inner cylinder and the outer cylinder rotate relative to each other, the tumbling of the materials in the inner cylinder and the outer cylinder becomes more irregular, thereby reducing the situation where large-sized materials are piled up on the top and small-sized materials are deposited on the bottom, thereby improving the calcination quality and the calcination efficiency.

[0016] Furthermore, the calcined sand turning mechanism and calcining device of the present invention are provided with an elastic device on the side wall of the inner cylinder, so that when the inner cylinder and the outer cylinder rotate relative to each other, the elastic device repeatedly extends and retracts relative to the inner cylinder. During the rolling process of the material, the elastic device repeatedly extends into the inner cylinder to drive the material to rise in the vertical direction, thereby reducing the accumulation of the material at the bottom of the inner cylinder, and at the same time making the material more fully contact with the hot air in the inner cylinder, making the preheating more sufficient, thereby improving the calcining efficiency.

[0017] Furthermore, the calcined sand turning mechanism and calcining device of the present invention, by providing a spring plate, utilizes the wavy side wall surface of the outer cylinder to repeatedly squeeze the spring plate when the inner cylinder and the outer cylinder rotate relative to each other, so that the spring plate is repeatedly bent and deformed. By providing a push block, a stopper and a second limit spring, after the spring plate is bent and deformed to a certain extent, the limit of the stopper is released, so that the spring plate can instantly restore to its original state and extend into the inner cylinder. The impact force generated by the instantaneous recovery of the spring plate causes the inner cylinder and the outer cylinder to vibrate, thereby reducing the risk of material adhering to the inner cylinder and the outer cylinder, which not only further improves the calcination quality and calcination efficiency, but also reduces the difficulty of subsequent cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. In the accompanying drawings: Figure 1 is a structural schematic diagram of a calcined sand turning mechanism according to an embodiment of the present invention; Figure 2 is a structural schematic diagram of a calcined sand turning mechanism according to an embodiment of the present invention from another angle; Figure 3 is an explosion schematic diagram of a calcined sand turning mechanism according to an embodiment of the present invention; Figure 4 is a structural schematic diagram of a calcined sand turning mechanism according to an embodiment of the present invention from another angle; Figure 5 is along Figure 4 A schematic cross-sectional view taken along the cutting line AA of ; Figure 6 yes Figure 5 A schematic enlarged view of the middle region B, wherein the spring plate is in a first state; Figure 7 is a schematic structural diagram of a spring plate in a second state according to an embodiment of the present invention; Figure 8 is a schematic structural diagram of a spring plate in a third state according to an embodiment of the present invention; Fig. 9 yes Figure 5 Schematic enlargement of area C in the middle.

[0019] Among them: 100, base; 110, bracket; 120, first motor; 130, cylinder; 140, second motor; 141, belt; 150, support wheel; 200, outer cylinder; 210, discharge hole; 220, sealing plate; 230, circular track; 300, inner cylinder; 310, feed hole; 320, pulley; 330, feed port; 400, elastic device; 410, elastic plate; 411, cavity; 412, opening; 420, limit plate; 430, first limit spring; 440, stop block; 441, chamfer; 442, wedge surface; 450, second limit spring; 460, push block; 461, inclined surface; 500, material diverting shaft; 510, rotating shaft; 520, material diverting plate; 530, arc plate; 600, heating device. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0021] The terms "first" and "second" herein 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 at least one of the features, that is, include one or more of the features. In the description of the present invention, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. When a feature "includes or contains" one or some of the features it covers, unless otherwise specifically described, this indicates that other features are not excluded and may further include other features.

[0022] Unless otherwise clearly defined and specified, the terms "installed", "connected", "connected" 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 an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. A person skilled in the art should be able to understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0023] It should be understood that the orientations or positional relationships indicated by terms such as “upper”, “lower”, “vertical”, “horizontal”, “inside”, “outside”, “axial”, and “circumferential” are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to 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 invention.

[0024] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0025] Figure 1 It is a structural schematic diagram of a calcined sand turning mechanism according to an embodiment of the present invention. Figure 2 It is a structural schematic diagram from another angle of the calcined sand turning mechanism according to an embodiment of the present invention. Figure 3 Schematic diagram of an explosion of a calcined sand turning mechanism according to an embodiment of the present invention.

[0026] Refer to the following Figures 1 to 9 To describe a calcined sand turning mechanism and a calcining device provided by the present invention.

[0027] like Figure 1-3 As shown, this embodiment first provides a calcined sand turning mechanism. The calcined sand turning mechanism generally may include: a base 100, an outer cylinder 200, an inner cylinder 300 and a plurality of elastic devices 400.

[0028] The outer cylinder 200 is horizontally arranged along its axis, and the outer cylinder 200 is rotatably arranged on the base 100, and the side wall surface of the outer cylinder 200 is wavy. The inner cylinder 300 is rotatably arranged inside the outer cylinder 200, and is coaxially arranged with the outer cylinder 200, and the side wall surface of the inner cylinder 300 is wavy. A plurality of elastic devices 400 are telescopically arranged on the side wall of the inner cylinder 300. The plurality of elastic devices 400 are arranged at intervals along the circumference of the inner cylinder 300 and are perpendicular to the side wall surface of the inner cylinder 300.

[0029] The solution of this embodiment is to set a coaxial inner cylinder 300 and outer cylinder 200, and set the side wall surfaces of the inner cylinder 300 and the outer cylinder 200 to be wavy, so that when the inner cylinder 300 and the outer cylinder 200 rotate relatively, the materials in the inner cylinder 300 and the outer cylinder 200 can roll more disorderly, thereby reducing the situation where large-sized materials are accumulated on the top and small-sized materials are deposited on the bottom, thereby improving the calcination quality and improving the calcination efficiency.

[0030] In the solution of this embodiment, a plurality of retractable spring devices 400 are arranged on the side wall of the inner cylinder 300, so that during the calcination process, the materials can roll more irregularly under the drive of the spring devices 400, thereby further reducing the situation where large-sized materials are piled up on the top and small-sized materials are deposited on the bottom, thereby improving the calcination quality and calcination efficiency. Each spring device 400 is arranged to be perpendicular to the side wall of the inner cylinder 300, so that the spring device 400 can be retracted more smoothly. Figure 1 As shown, two opposing brackets 110 may be generally provided on the base 100 , and the outer cylinder 200 and the inner cylinder 300 may be rotatably disposed between the two brackets 110 , and supported and installed by the two brackets 110 .

[0031] Each elastic device 400 is disposed in a crest region of the inner cylinder 300 protruding toward the outer cylinder 200. One end of each elastic device 400 extends into the inner cylinder 300, and the other end contacts the side wall surface of the outer cylinder 200. The elastic device 400 is configured to repeatedly expand and contract relative to the inner cylinder 300 under the pressure of the side wall surface of the outer cylinder 200 when the outer cylinder 200 rotates relative to the inner cylinder 300.

[0032] In the solution of this embodiment, a plurality of springing devices 400 are arranged on the side wall of the inner cylinder 300, and when the inner cylinder 300 and the outer cylinder 200 rotate relative to each other, the springing devices 400 are repeatedly extended and retracted relative to the inner cylinder 300. In the rolling process of the material, the springing devices 400 that repeatedly extend into the inner cylinder 300 can be used to drive the material to rise in the vertical direction, thereby reducing the accumulation of the material at the bottom of the inner cylinder 300, and at the same time, the material can be more fully contacted with the hot air in the inner cylinder 300, so that the material is heated more fully, thereby improving the calcining efficiency.

[0033] In some preferred embodiments, an elastic device 400 is provided at the top of each wave peak area on the side wall surface of the inner cylinder 300 protruding toward the outer cylinder 200 .

[0034] Figure 4 It is a structural schematic diagram of a calcined sand turning mechanism according to an embodiment of the present invention from another angle. Figure 5 is along Figure 4 A schematic cross-sectional view taken along the cutting line AA. Figure 6 yes Figure 5 A schematic enlarged view of the middle area B, wherein the spring plate 410 is in the first state. Figure 7 4 is a schematic structural diagram of a spring plate 410 in a second state according to an embodiment of the present invention. Figure 8 4 is a schematic structural diagram of a spring plate 410 in a third state according to an embodiment of the present invention. Fig. 9 yes Figure 5 Schematic enlargement of region C in the middle.

[0035] The elastic device 400 may generally include: an elastic plate 410 , at least one limiting piece 420 and at least one first limiting spring 430 .

[0036] One end of the spring plate 410 extends into the inner cylinder 300, and the other end contacts the side wall of the outer cylinder 200. At least one limiting piece 420 is arranged on the spring plate 410, and is located between the inner cylinder 300 and the outer cylinder 200. At least one first limiting spring 430 is arranged between at least one limiting piece 420 and the inner cylinder 300, one end of which is connected to the limiting piece 420, and the other end of which is connected to the side wall of the inner cylinder 300.

[0037] In the solution of this embodiment, the maximum distance that the spring plate 410 extends into the inner cylinder 300 is limited by providing a limit plate 420 and a first limit spring 430. The first limit spring 430 applies a force to the spring plate 410 to keep the spring plate 410 away from the inner cylinder 300, thereby preventing the spring plate 410 from completely breaking away from the side wall of the outer cylinder 200 when extending into the inner cylinder 300 under the pressure of the side wall of the outer cylinder 200, and preventing the spring plate 410 from excessively entering the inner cylinder 300.

[0038] In some preferred embodiments, a plurality of limiting plates 420 and a corresponding plurality of first limiting springs 430 may be provided on the spring plate 410. The plurality of limiting plates 420 and the plurality of first limiting springs 430 may be symmetrically distributed on both sides of the spring plate 410 and evenly spaced along the axial direction of the inner cylinder 300, thereby improving the structural stability while ensuring the limiting effect.

[0039] The first limiting spring 430 is preferably made of ceramic material to maintain its elasticity in a high temperature environment.

[0040] The elastic device 400 may generally further include: a cavity 411 , at least one opening 412 , at least one stopper 440 , at least one second limit spring 450 and a push block 460 .

[0041] The cavity 411 is arranged inside the spring plate 410. At least one opening 412 is arranged on the side wall of the spring plate 410 in an area close to the inner cylinder 300 and communicates with one end of the cavity 411 close to the inner cylinder 300. At least one stopper 440 is arranged at the at least one opening 412 so as to be telescopically movable, and a chamfer 441 and a wedge-shaped surface 442 concave inwardly are arranged on the side of the at least one stopper 440 facing the outer cylinder 200. At least one second limit spring 450 is arranged in the cavity 411 along the direction of the opening 412, one end of which is connected to the at least one stopper 440 and the other end of which is connected to the spring plate 410. A push block 460 is arranged in the cavity 411, and an outwardly protruding inclined surface 461 adapted to the stopper 440 is formed on one end of the push block 460 facing the stopper 440. The spring plate 410 is configured to bend and deform repeatedly under the pressure of the side wall of the outer cylinder 200 when the inner cylinder 300 and the outer cylinder 200 rotate relative to each other, thereby pushing the push block 460 to repeatedly press at least one stopper 440, so that at least one stopper 440 repeatedly telescopes and moves at the opening 412.

[0042] like Figure 6 As shown, when the inner cylinder 300 and the outer cylinder 200 rotate until the crest and trough areas of the inner cylinder 300 and the outer cylinder 200 are opposite to each other, the spring plate 410 is in the first state where no bending deformation occurs.

[0043] The solution of this embodiment is to set a cavity 411 inside the spring plate 410 and set a push block 460 in the cavity 411, so that when the spring plate 410 is squeezed by the side wall of the outer tube 200, the side wall of the spring plate 410 can protrude to both sides to form a curved surface, and at the same time push the push block 460 to move toward the stop block 440.

[0044] The stopper 440 is telescopically moved at the opening 412 , and the position of the spring plate 410 relative to the inner cylinder 300 is limited by the interference between the stopper 440 and the inner cylinder 300 .

[0045] like Figure 7 As shown, when the stopper 440 has not retracted to the inside of the spring plate 410, the spring plate 410 is in a second state of bending deformation under the pressure of the side wall surface of the outer cylinder 200. With the continuous pressure of the side wall surface of the outer cylinder 200, the degree of bending deformation of the spring plate 410 continues to increase. After the spring plate 410 is bent to a certain extent, the push block 460 contacts the stopper 440, and the inclined surface 461 of the push block 460 cooperates with the wedge surface 442 of the stopper 440 to push the stopper 440 back to the inside of the spring plate 410, and the limit of the spring plate 410 is released.

[0046] like Figure 8As shown, after the limit of the spring plate 410 is released, the bent portion of the spring plate 410 is instantly restored, and the spring plate 410 is in the third state of extending into the inner cylinder 300. The impact force generated by the instantaneous restoration of the bent portion of the spring plate 410 acts on the inner cylinder 300 and the outer cylinder 200, driving the inner cylinder 300 and the outer cylinder 200 to vibrate together, thereby reducing the risk of materials adhering to the inner cylinder 300 and the outer cylinder 200, not only further improving the calcination quality and calcination efficiency, but also reducing the difficulty of subsequent cleaning.

[0047] After the spring plate 410 extends into the inner cylinder 300, the stopper 440 breaks away from the contact with the wall surface of the inner cylinder 300 and extends from the opening 412 under the action of the second limit spring 450. The inner cylinder 300 and the outer cylinder 200 continue to rotate relative to each other, and the side wall surface of the outer cylinder 200 no longer presses the spring plate 410 to move into the inner cylinder 300. The spring plate 410 gradually moves away from the axis of the inner cylinder 300 under the pressure of the first limit spring 430. After the spring plate 410 moves to the point where the stopper 440 contacts the inner wall surface of the side wall of the inner cylinder 300, under the elastic force of the first limit spring 430, the side wall surface of the inner cylinder 300 presses against the chamfer 441 of the stopper 440, so that the stopper 440 gradually retracts into the spring plate 410. At the moment when the stopper 440 retracts into the spring plate 410, the blocking force of the inner cylinder 300 on the spring plate 410 disappears, and the force of the first limit spring 430 drives the spring plate 410 to move toward the outer cylinder 200, and generates a certain impact force on the inner cylinder 300 and the outer cylinder 200, so that the inner cylinder 300 and the outer cylinder 200 vibrate, further reducing the risk of material adhering to the inner cylinder 300 and the outer cylinder 200, and improving the calcination quality and efficiency.

[0048] In the solution of this embodiment, the spring plate 410 is set as a plate body that can store force and deform, and the impact force generated by the elastic movement is used to drive the inner cylinder 300 and the outer cylinder 200 to vibrate, thereby reducing the risk of the inner cylinder 300 and the outer cylinder 200 being attached with materials and alleviating the subsequent cleaning work.

[0049] In the solution of this embodiment, the elastic device 400 is arranged in the peak area of ​​the inner cylinder 300 protruding toward the outer cylinder 200, and one end of the elastic device 400 is arranged to contact the side wall surface of the outer cylinder 200, so that when the inner cylinder 300 and the outer cylinder 200 rotate relative to each other, no matter where the inner cylinder 300 and the outer cylinder 200 rotate, it can ensure that the elastic plate 410 contacts the side wall of the outer cylinder 200, and avoid excessive bending deformation of the elastic plate 410.

[0050] In some embodiments, a plurality of openings 412 are arranged at intervals along the axial direction on the spring plate 410, and a stopper 440 and a second limit spring 450 are arranged at each opening 412, and the plurality of stoppers 440 can be pushed by a push block 460. In other embodiments, the openings 412 can be symmetrically distributed on both sides of the spring plate 410, and two stoppers 440 arranged at two opposite openings 412 are connected by a second limit spring 450. In addition, a slide groove and a corresponding slider can be formed on the stopper 440 and the spring plate 410 to prevent the stopper 440 from slipping out of the opening 412. A "V"-shaped inclined surface can be formed correspondingly at the end of the push block 460 facing the stopper 440, so that the stopper 440 can push the two stoppers 440 at the same time, so that the two stoppers 440 are retracted into the spring plate 410 at the same time, and the spring plate 410 is ensured to smoothly extend into the inner cylinder 300.

[0051] The second limiting spring 450 is preferably made of ceramic material to maintain its elasticity in a high temperature environment.

[0052] In some preferred embodiments, the limiting plate and the opening 412 are staggered, thereby avoiding interference between the stopper 440 and the limiting plate and the first limiting spring, thereby improving structural stability.

[0053] In some preferred embodiments, an annular cavity is provided at both ends of the inner cylinder 300 and the outer cylinder 200. The annular cavity is located between the inner cylinder 300 and the outer cylinder 200 and at both ends of the elastic device 400, so that the material between the outer cylinder 200 and each elastic device 400 can flow through the annular cavity, thereby ensuring the calcination effect of the material.

[0054] The calcined sand turning mechanism may generally further include a turning shaft 500 .

[0055] The material-dispensing shaft 500 is rotatably disposed in the inner cylinder 300 and is axially close to the side wall of the inner cylinder 300. The side wall of the inner cylinder 300 is formed with a material-passing port 330 in the area close to the material-dispensing shaft 500. The material-passing port 330 is disposed axially of the inner cylinder 300 and connects the inner cylinder 300 and the outer cylinder 200.

[0056] The solution of this embodiment is to set a material through-hole 330 on the inner cylinder 300 and set a material-moving shaft 500 at the material through-hole 330, and utilize the rotation of the material-moving shaft 500 to move the material in the inner cylinder 300 to the material through-hole 330, and then send it between the inner cylinder 300 and the outer cylinder 200.

[0057] like Figure 8As shown, the material-digging shaft 500 may generally include a rotating shaft 510, and a material-digging plate 520 arranged on the rotating shaft 510 at intervals along the circumferential direction. An arc plate 530 is also arranged in the area of ​​the material-digging shaft 500 close to the axis of the inner cylinder 300. The arc plate 530 is arranged on the outer periphery of the material-digging shaft 500 to avoid interference with the material-digging shaft 500. The arc plate 530 prevents excessive accumulation of materials at the material-digging shaft 500, thereby ensuring the normal rotation of the material-digging shaft 500.

[0058] The calcined sand turning mechanism may generally further include a first motor 120 .

[0059] The first motor 120 is disposed on the end surface of the inner cylinder 300 and is connected to the material-moving shaft 500 .

[0060] In the solution of this embodiment, a first motor 120 is arranged on the end surface of the inner cylinder 300 , and the first motor 120 is used to drive the normal rotation of the material-prying shaft 500 .

[0061] The calcined sand turning mechanism may generally further include: a feed hole 310 , a discharge hole 210 , a sealing plate 220 and a cylinder 130 .

[0062] The feed hole 310 is arranged on the end surface of the inner cylinder 300. The discharge hole 210 is arranged on the end surface of the outer cylinder 200, and is located between the side wall of the outer cylinder 200 and the side wall of the inner cylinder 300. The sealing plate 220 is arranged on the end surface of the outer cylinder 200, and is used to close the discharge hole 210. The cylinder 130 is arranged on the base 100 and is connected to the sealing plate 220.

[0063] In the scheme of this embodiment, the feed hole 310 is set on the end face of the inner cylinder 300, and the discharge hole 210 is set between the inner cylinder 300 and the outer cylinder 200, so that the material first enters the inner cylinder 300 through the feed hole 310, then enters between the inner cylinder 300 and the outer cylinder 200 through the material opening 330, and is finally sent out through the discharge hole 210 located between the inner cylinder 300 and the outer cylinder 200. The specific setting of the material conveying path ensures the sufficient calcination of the material and improves the calcination quality.

[0064] The solution of this embodiment is to set a sealing plate 220 at the discharge hole 210 and set a cylinder 130 connected to the sealing plate 220, and use the cylinder 130 to open or close the discharge hole 210, which is not only convenient to operate but also improves the sealing effect of the calcining device, thereby improving the calcining efficiency.

[0065] In some preferred embodiments, the feed hole 310 and the discharge hole 210 may be respectively disposed at both ends of the inner cylinder 300 and the outer cylinder 200 to increase the moving distance of the material during the calcination process, thereby ensuring the calcination effect.

[0066] The calcined sand turning mechanism may generally further include: a second motor 140 , a pulley 320 and a belt 141 .

[0067] The second motor 140 is disposed on the base 100. The pulley 320 is disposed at the center of the inner cylinder 300 of the outer cylinder 200. The belt 141 is sleeved on the pulley 320 and the second motor 140.

[0068] In the solution of this embodiment, a second motor 140 is provided, and a belt 141 is used to drive a pulley 320 connected to the inner cylinder 300 to rotate, thereby driving the inner cylinder 300 to rotate.

[0069] In some preferred embodiments, the first motor 120 and the second motor 140 may be respectively disposed on two opposite end surfaces of the inner cylinder 300 .

[0070] The calcined sand turning mechanism may generally further include: at least one annular track 230 and at least one supporting wheel 150 .

[0071] At least one annular track 230 is circumferentially disposed at an end of the outer cylinder 200. At least one supporting wheel 150 is disposed on the base 100 and cooperates with the at least one annular track 230.

[0072] In the solution of this embodiment, an annular track 230 is provided at the end of the outer cylinder 200 , and a supporting wheel 150 cooperating with the annular track 230 is provided on the base 100 , so that the outer cylinder 200 is driven to rotate by the rotation of the supporting wheel 150 .

[0073] In some preferred embodiments, an annular track 230 may be provided at each end of the outer cylinder 200, and four supporting wheels 150 may be provided on the base 100 corresponding to the two annular tracks 230. The two supporting wheels 150 may be provided on both sides of the outer cylinder 200, respectively, and correspond to the same annular track 230. Thus, while the smoothness of the rotation of the outer cylinder 200 is improved, the supporting wheels 150 are used to support the outer cylinder 200, thereby improving the structural stability of the outer cylinder 200.

[0074] In some embodiments, the rotation of the support wheel 150 may be powered by the second motor 140. In other embodiments, the rotation of the support wheel 150 may also be powered by a separate motor.

[0075] This embodiment also provides a calcining device. The calcining device can generally include: any one of the above-mentioned calcining sand turning mechanisms and a heating device 600. The heating device 600 is arranged on the outer cylinder 200 or the outer periphery of the calcining sand turning mechanism.

[0076] The solution of this embodiment is to set a heating device 600 in the outer cylinder 200 or the outer periphery of the calcining sand turning mechanism, so that after the material enters the inner cylinder 300 through the feed hole 310, it is first fully preheated in the inner cylinder 300, and then enters between the inner cylinder 300 and the outer cylinder 200, and is fully calcined under the heating of the heating device 600 set in the outer cylinder 200 or the outer periphery, thereby ensuring the calcination effect.

[0077] like Figure 7 As shown, in some embodiments, the heating device 600 can be configured as a heating wire. The heating wire can be passed through or wound on the side wall surface of the outer cylinder 200. In other embodiments, the heating device 600 can be configured as an electric heating shell that generates heat energy when powered on, and is arranged on the outer cylinder 200. In still other embodiments, the outer cylinder 200 can be directly powered on to generate heat energy.

[0078] The specific working process of the calcined sand turning mechanism and the calcining device provided by the present invention is described in combination with the above embodiments: The inner cylinder 300 starts to rotate under the drive of the second motor 140, the outer cylinder 200 starts to rotate under the drive of the support wheel 150, and the material-dispensing shaft 500 starts to rotate under the drive of the first motor 120. The elastic device 400 is repeatedly deformed under the extrusion of the side wall of the outer cylinder 200, and repeatedly expands and contracts relative to the inner cylinder 300. The material enters the inner cylinder 300 through the feed hole 310 on the end surface of the inner cylinder 300, and rolls irregularly under the drive of the inner cylinder 300 and the elastic device 400 extending into the inner cylinder 300, and is fully preheated. Under the movement of the material-dispensing shaft 500, the material enters between the inner cylinder 300 and the outer cylinder 200 through the material opening 330, and rolls between the inner cylinder 300 and the outer cylinder 200 for calcination. After the calcination of the material is completed, the sealing plate 220 is moved by the cylinder 130 to open the discharge hole 210, so that the material can be smoothly taken out through the discharge hole 210.

[0079] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0080] The above-described embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A calcined sand turning mechanism, characterized in that: include: Base; An outer cylinder is horizontally arranged along its axis, the outer cylinder is rotatably arranged on the base, and the side wall surface of the outer cylinder is wavy; The inner cylinder is rotatably arranged inside the outer cylinder and coaxially arranged with the outer cylinder, and the side wall surface of the inner cylinder is wavy; A plurality of elastic devices are telescopically arranged on the side wall of the inner tube; the plurality of elastic devices are arranged at intervals along the circumference of the inner tube and are perpendicular to the side wall surface of the inner tube.

2. The calcined sand turning mechanism according to claim 1, characterized in that: Each of the elastic devices is arranged at a peak area of ​​the inner tube protruding toward the outer tube; One end of each of the elastic devices extends into the inner tube, and the other end contacts the side wall of the outer tube; The elastic device is configured to repeatedly expand and contract relative to the inner tube under the pressure of the side wall surface of the outer tube when the outer tube rotates relative to the inner tube.

3. The calcined sand turning mechanism according to claim 2, characterized in that: The elastic device comprises: A spring plate, one end of which extends into the inner tube and the other end of which contacts the side wall of the outer tube; At least one limiting piece, arranged on the spring plate and located between the inner tube and the outer tube; At least one first limiting spring is arranged between at least one of the limiting plates and the inner tube, one end of the spring is connected to the limiting plate, and the other end of the spring is connected to the side wall of the inner tube.

4. The calcined sand turning mechanism according to claim 3, characterized in that: The elastic device also includes: A cavity is arranged inside the spring plate; At least one opening is provided on the side wall of the spring plate in a region close to the inner tube and communicates with an end of the cavity close to the inner tube; At least one stopper is telescopically movably arranged at at least one of the openings, and at least one of the stoppers is provided with a chamfer and an inwardly concave wedge-shaped surface on a side facing the outer tube; At least one second limit spring is arranged in the cavity along the direction of the opening, one end of the second limit spring is connected to at least one of the stoppers, and the other end of the second limit spring is connected to the spring plate; A push block is arranged in the cavity, and one end of the push block facing the stopper is formed with an outwardly protruding inclined surface adapted to the stopper; The spring plate is configured to bend and deform repeatedly under the pressure of the side wall of the outer tube when the inner tube and the outer tube rotate relative to each other, thereby pushing the push block to repeatedly press at least one of the stoppers, so that at least one of the stoppers repeatedly moves in extension and retraction at the opening.

5. The calcined sand turning mechanism according to claim 1, characterized in that: Also includes: A material-dispensing shaft is rotatably disposed in the inner cylinder and is axially close to the side wall of the inner cylinder; A material through hole is formed on the side wall of the inner cylinder in an area close to the material-dispensing shaft. The material through hole is arranged along the axial direction of the inner cylinder and connects the inner cylinder and the outer cylinder.

6. The calcined sand turning mechanism according to claim 5, characterized in that: Also includes: The first motor is arranged on the end surface of the inner cylinder and is connected to the material-moving shaft.

7. The calcined sand turning mechanism according to claim 1, characterized in that: Also includes: A feed hole is provided on the end surface of the inner cylinder; A discharge hole is provided on the end surface of the outer cylinder and is located between the side wall of the outer cylinder and the side wall of the inner cylinder; A sealing plate, disposed on the end surface of the outer cylinder, for closing the discharge hole; The cylinder is arranged on the base and connected with the sealing plate.

8. The calcined sand turning mechanism according to claim 1, characterized in that: Also includes: A second motor is arranged on the base; A pulley, arranged at the center of the end surface of the inner cylinder; A belt is sleeved on the pulley and the second motor.

9. The calcined sand turning mechanism according to claim 1, characterized in that: Also includes: At least one annular track is circumferentially arranged at the end of the outer cylinder; At least one supporting wheel is arranged on the base and cooperates with at least one of the annular tracks.

10. A calcining device, characterized in that: include: The calcined sand turning mechanism according to any one of claims 1 to 9; as well as The heating device is arranged on the outer cylinder or the outer periphery of the calcined sand turning mechanism.

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