Zircon sand drying equipment

Abstract

The utility model discloses zircon sand drying equipment, and belongs to the technical field of drying furnaces. The drying furnace comprises a cylindrical furnace body, a water vapor guide pipe, a heating shell, a feeding sealing cover, a discharging sealing cover, an air inlet fan and an air outlet fan. A cylindrical furnace body is arranged in the heating shell, a water vapor guide pipe is arranged in the cylindrical furnace body, a feeding sealing cover and a discharging sealing cover are arranged at the two ends of the outer portion of the heating shell respectively, an air inlet fan is arranged on the feeding sealing cover, and an air outlet fan is arranged on the discharging sealing cover. The air pressure inside the water vapor guide pipe is lower than the air pressure outside the water vapor guide pipe. Compared with the prior art, the zircon sand drying device has the advantages that negative pressure is generated in the water vapor guide pipe, water vapor generated by heating in the furnace body is sucked into the water vapor guide pipe, the efficiency of discharging the water vapor in the furnace body is improved, and the influence of water vapor remaining in the furnace body on the zircon sand drying degree is reduced.

Description

Technical Field

[0001] This utility model relates to the field of drying furnace technology, and in particular to a zircon sand drying device. Background Technology

[0002] Zircon sand is a natural mineral, mainly composed of zirconium silicate, containing small amounts of impurities such as iron and titanium. It possesses advantages such as a high melting point and high chemical stability, making it widely used in industry. Due to the presence of impurities, zircon sand requires drying after crushing, screening, and water separation to improve its purity.

[0003] A rotary drum dryer, as described in announcement number CN221685008U, includes a support plate and a placement platform. Pads are provided on both sides of the top of the placement platform, and a driving device is installed on the top of each pad. Multiple sets of mounting strips and anti-collision pads are provided on the inner wall of the drum. The driving device drives a support wheel to rotate, which in turn drives a guide ring to rotate, which in turn drives the drum to rotate. The drum, in turn, drives the mounting strips and anti-collision pads on the inner wall to rotate. The mounting strips are arranged in a serpentine pattern on the inner wall of the drum, forming an angle with the inner wall. Sand blocks rotating within the drum are moved upwards by the mounting strips, and because the angle between the mounting strips and the inner wall of the drum is downwards, the sand blocks are heated evenly, resulting in better drying. Simultaneously, the anti-collision pads on the inner wall of the drum effectively prevent sand blocks from directly impacting the inner wall, extending the service life of the dryer.

[0004] While the aforementioned drying oven solves some problems, it employs a single-end heating system, with the other end used to discharge the moisture generated during heating, following the direction of material discharge. Due to the heating process, the high internal pressure forces the moisture from one end to the other. However, as the distance from the heating element increases, and the airflow inside the oven is slow during the expulsion of moisture, the rate at which the heated moisture is discharged from the outlet is low. Furthermore, the moisture tends to diffuse within the oven during transport, resulting in inefficient moisture discharge and potentially affecting the humidity of the dried material. Utility Model Content

[0005] This invention provides a zircon sand drying equipment to solve the defects in the prior art, such as slow airflow inside the furnace, low rate of discharge of heated water vapor at the outlet, and easy diffusion of water vapor inside the furnace during transportation, which affects the humidity of the dried material.

[0006] This utility model provides a zircon sand drying device, comprising:

[0007] A cylindrical furnace body, with a heating shell on the outside, and a feed sealing cover and a discharge sealing cover respectively at both ends of the heating shell; a water vapor guide pipe, which is located inside the cylindrical furnace body, is used to collect water vapor generated by heating inside the cylindrical furnace body, and the center of gravity of the water vapor guide pipe is slightly lower, and several evenly distributed air inlets are opened on the outer wall of the water vapor guide pipe; a water vapor conveying auxiliary component, which includes an inlet fan set on the feed sealing cover and an outlet fan set on the discharge sealing cover, the inlet fan is used to guide airflow into the interior of the water vapor guide pipe, and the air pressure inside the water vapor guide pipe is lower than the air pressure inside the cylindrical furnace body.

[0008] Optionally, the cylindrical furnace body rotates inside the heating shell, the cylindrical furnace body has a wear-resistant contact ring on the outside, and a support pad wheel is provided at the bottom of the heating shell.

[0009] Optionally, the interior of the cylindrical furnace body is inclined towards the end where the discharge sealing cover is installed, and a number of evenly distributed conveying spiral fins are fixedly connected to the inner wall of the cylindrical furnace body. A number of evenly distributed lifting plates are fixedly connected between the conveying spiral fins on the inner wall of the cylindrical furnace body.

[0010] Optionally, the air inlets are all located at the bottom of the outer wall of the water vapor guide pipe, and a number of evenly distributed counterweights are fixedly connected to the bottom of the outer wall of the water vapor guide pipe.

[0011] Optionally, the air intake fan and the water vapor guide pipe are located on the same axis, and the water vapor inside the cylindrical furnace body enters the interior of the water vapor guide pipe through the air intake hole.

[0012] Optionally, the exhaust fan and the cylindrical furnace body are located on the same axis, and both ends of the cylindrical furnace body are fixedly connected to a cross-shaped connecting frame. A connecting rod is provided between the connecting frames, and the top of the water vapor guide pipe is rotatably connected to the connecting rod.

[0013] Optionally, a driven gear ring with outward-facing teeth is provided in the middle of the outer wall of the cylindrical furnace body, a drive motor is provided on the side of the bottom of the outer side of the heating shell, and a drive gear is provided at the output end of the drive motor, the drive gear meshing with the driven gear ring.

[0014] Optionally, a feed hopper is fixedly connected to the side of the feed sealing cover away from the discharge sealing cover, and a discharge pipe is fixedly connected to the side of the discharge sealing cover away from the feed sealing cover.

[0015] Optionally, the counterweight is located at the interval of the air inlet, and the top of the water vapor guide pipe is conical.

[0016] The zircon sand drying equipment provided by this utility model has the following technical effects or advantages:

[0017] The fans installed at both ends of the furnace body generate a high-speed airflow inside the steam guide pipe, creating a negative pressure inside the steam guide pipe. The steam produced by heating inside the furnace body is drawn into the steam guide pipe. Combined with the blowing of the inlet fan and the suction of the outlet fan, the efficiency of steam discharge from inside the furnace body is increased, and the impact of residual steam inside the furnace body on the drying degree of zircon sand is reduced. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a three-dimensional schematic diagram of a zircon sand drying device provided in one embodiment of the present invention. Figure 1 ;

[0020] Figure 2 This is a three-dimensional schematic diagram of the zircon sand drying equipment of this utility model. Figure 2 ;

[0021] Figure 3 This is a three-dimensional schematic diagram of the zircon sand drying equipment of this utility model. Figure 3 ;

[0022] Figure 4 This is a three-dimensional schematic diagram of the zircon sand drying equipment of this utility model. Figure 4 ;

[0023] Figure 5 This is a partial three-dimensional schematic diagram of the zircon sand drying equipment of this utility model;

[0024] Figure 6 This is a three-dimensional enlarged schematic diagram of the water vapor guiding pipe of this utility model.

[0025] Figure label:

[0026] 1. Cylindrical furnace body; 2. Steam guide pipe; 3. Steam conveying auxiliary parts; 301. Inlet fan; 302. Outlet fan; 4. Heating shell; 5. Feed sealing cover; 6. Discharge sealing cover; 7. Support roller; 8. Feeding spiral fins; 9. Lifting plate; 10. Air inlet; 11. Counterweight; 12. Connecting frame; 13. Connecting rod; 14. Driven gear ring; 15. Drive motor; 16. Drive gear; 17. Feed hopper; 18. Discharge pipe. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0028] As mentioned earlier, current drying ovens use heating at one end, with the other end used to discharge the moisture generated during heating, following the direction of material discharge. Due to heating, the high pressure inside forces the moisture from one end to the other. However, because the distance from the heating device increases, and the airflow speed inside the oven is slow when the moisture is squeezed out, the rate at which the heated moisture is discharged from the outlet is low. Moreover, the moisture tends to diffuse inside the oven during transport, resulting in low efficiency in removing moisture and potentially affecting the humidity of the dried material.

[0029] To address this issue, this utility model provides a zircon sand drying device. Fans located at both ends of the furnace body, specifically the inlet fan 301, generate a high-speed airflow inside the steam guide pipe 2, creating a negative pressure inside the pipe. The airflow velocity on the inner wall of the bottom of the steam guide pipe 2 is greater than the airflow velocity on the outer wall. The steam generated during heating inside the furnace is drawn into the steam guide pipe 2. Combined with the blowing of the inlet fan 301 and the suction of the outlet fan 302, this increases the efficiency of steam removal from the furnace and reduces the impact of residual steam inside the furnace on the drying degree of the zircon sand.

[0030] The following is combined Figures 1-6 This utility model is described in detail. Example

[0031] like Figures 1-6 As shown, this utility model provides a drying device, particularly a zircon sand drying device, including a cylindrical furnace body 1, a water vapor guiding pipe 2, a water vapor conveying auxiliary component 3, a heating shell 4, a feed sealing cover 5, and a discharge sealing cover 6.

[0032] The heating housing 4, heated by an energized coil, is installed on the ground. Inside it is a rotatable cylindrical furnace body 1. A driven gear ring 14 is located in the middle of the outer wall of the cylindrical furnace body 1, with its teeth facing outwards. The inner wall of the driven gear ring 14 is fixedly connected to the outer wall of the cylindrical furnace body 1. The driven gear ring 14 drives the cylindrical furnace body 1 to rotate. Wear-resistant contact rollers are provided on the outer wall of the cylindrical furnace body 1 before and after the driven gear ring 14. Two sets of support rollers 7 are provided at the bottom of the heating housing 4. Figure 5As shown, the support roller 7 contacts two wear-resistant rollers on the outside of the cylindrical furnace body 1 through an opening at the bottom of the heating housing 4, as... Figure 3 As shown, four support rollers 7 pass through the opening at the bottom of the heating housing 4 and contact the wear-resistant roller to support the cylindrical furnace body 1, and the cylindrical furnace body 1 can rotate.

[0033] A drive motor 15 is bolted to the ground on the same horizontal plane as the heating shell 4. A drive gear 16 is fixedly connected to the output end of the drive motor 15. The drive gear 16 meshes with the driven gear ring 14, and the drive motor 15 drives the cylindrical furnace body 1 to rotate. Sealing covers are provided at both ends of the heating shell 4, one being a feed sealing cover 5 and the other a discharge sealing cover 6. The cylindrical furnace body 1 is inclined towards the discharge sealing cover 6 to facilitate the movement of the dried zircon sand inside the furnace towards the discharge end after the furnace body 1 rotates. To increase the stirring and conveying of the zircon sand inside the furnace, several equally spaced conveying spiral fins 8 are provided on the inner wall of the furnace, and all conveying spiral fins 8 are arranged rotating in the same direction. Several evenly distributed lifting plates 9 are provided within the spacing of the conveying spiral fins 8. The lifting plate 9, in conjunction with the rotation of the cylindrical furnace body 1, drives the zircon sand inside the furnace to be stirred in reverse. As the furnace rotates, the zircon sand at the top of the furnace is driven down by the lifting plate 9, breaking up the zircon sand blocks that have clumped due to excessive moisture.

[0034] To expedite the removal of moisture generated during furnace heating and zircon sand separation, an inlet fan 301 is installed on the inlet sealing cover 5, and an outlet fan 302 is installed on the outlet sealing cover 6. The fan blades at both ends convey the moisture generated inside the cylindrical furnace 1 towards the outlet end, assisting in the removal of moisture. A feed hopper 17 is fixedly connected to the side of the inlet sealing cover 5 furthest from the furnace body for feeding the zircon sand to be dried into the furnace. A discharge pipe 18 is fixedly connected to the side of the outlet sealing cover 6 furthest from the furnace body for discharging the dried zircon sand to the outside of the furnace.

[0035] Screened zircon sand is fed into the cylindrical furnace body 1 through the feed hopper 17. The drive motor 15 is started, and the drive motor 15 drives the driven gear ring 14 to rotate through the drive gear 16, causing the cylindrical furnace body 1 to rotate inside the heating shell 4. The rotation of the cylindrical furnace body 1 conveys the zircon sand to the discharge end of the furnace body through the conveying spiral fins 8. The lifting plates 9 between the conveying spiral fins 8, along with the rotation of the furnace body, tumble and lift the zircon sand. The agglomerated zircon sand is carried to the top, and then, without support and with insufficient centrifugal force, the agglomerated zircon sand falls from the top to the bottom, dispersing the agglomerated zircon sand. The sealed cover is closed, and the inlet fan 301 and outlet fan 302 are started by the motor. The speed of the inlet fan 301 is greater than that of the outlet fan 302, which transports the water vapor separated from the heating inside the furnace body to the outside. The inlet fan 301 is started on average every 20 to 40 minutes, and each start lasts for 5 to 10 minutes. Reduce the impact of airflow on the internal heating of the furnace. Example

[0036] Based on Embodiment 1, to further enhance the outward transport of water vapor generated inside the cylindrical furnace body 1, cross-shaped connecting frames 12 are installed at both ends of the furnace body. The four ends of the connecting frames 12 are fixedly connected to the inner wall of the furnace body, and the connecting frames 12 are connected together by a connecting rod 13. Both the connecting frames 12 and the connecting rod 13 rotate together with the furnace body. A water vapor guiding pipe 2 is installed on the connecting rod 13. The top of the water vapor guiding pipe 2 is conical, and several evenly distributed air inlets 10 are opened at the bottom of the outer side of the water vapor guiding pipe 2. The top is seamless to prevent zircon sand from clogging the gaps and causing blockage. The conical top prevents zircon sand from accumulating on the water vapor guiding pipe 2 when it falls. Furthermore, to prevent the water vapor guiding pipe 2 from rotating with the cylindrical furnace body 1, the bottom of the water vapor guiding pipe 2 is heavy, and several evenly distributed counterweights 11 are fixedly connected to the bottom of the outer side of the water vapor guiding pipe 2 to increase the stability of the water vapor guiding pipe 2 when the cylindrical furnace body 1 rotates.

[0037] The inlet fan 301 and the water vapor guide pipe 2 are concentric circles, conveying airflow into the pipe. When the fan blades at both ends rotate simultaneously, the average airflow velocity formed in the water vapor guide pipe 2 is between the airflow velocities at the inlet and outlet, but greater than the airflow velocity at the outlet fan 302, because the rotational speed of the inlet fan 301 is much greater than that of the outlet fan 302. Furthermore, the diameter of the water vapor guide pipe 2 is smaller than the inner diameter of the furnace body, and the airflow velocity inside the pipe is greater than that outside the pipe, creating a negative pressure inside the pipe. The air pressure outside the water vapor guide pipe 2 is greater than the air pressure inside the pipe, and the water vapor generated inside the furnace body is forced into the interior of the water vapor guide pipe 2 along with the gas inside the furnace. With the airflow and the outlet fan 302, some of the water vapor entering the interior of the water vapor guide pipe 2 liquefies. Under the influence of gravity due to the tilt of the furnace body and the surface tension between liquids, the water vapor and a small amount of liquid are conveyed to the discharge end. The steam guide pipe 2 runs through the entire heating section of the cylindrical furnace body 1, reducing the degree of steam dispersion inside the furnace and making it easier for the steam to gather and be transported outwards, thus reducing the degree of steam dispersion caused by airflow entering the furnace body. The exhaust fan 302 is concentric with the cylindrical furnace body 1 and eccentrically positioned with the steam guide pipe 2. The exhaust fan 302 transports the small amount of dispersed steam between the furnace body and the steam guide pipe 2 outwards and also assists in the transport of the steam gathered inside the steam guide pipe 2.

[0038] All electrical components mentioned in this article are connected to an external main controller and 220V AC mains power. The main controller can be a conventional known device such as a computer for control. The detailed description of known functions and components is omitted in the specific implementation of this disclosure. To ensure the compatibility of the device, the operating methods used are consistent with the parameters of commercially available instruments.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A zircon sand drying apparatus, characterised in that, Include: The cylindrical furnace body (1) is provided with a heating shell (4) outside, and the heating shell (4) is provided with a feeding sealing cover (5) and a discharging sealing cover (6) at both ends outside respectively; The water vapor guide pipe (2) is arranged inside the cylindrical furnace body (1), the water vapor guide pipe (2) is used for gathering water vapor generated by heating inside the cylindrical furnace body (1), and the center of gravity of the water vapor guide pipe (2) is downward, a plurality of evenly distributed air inlet holes (10) are formed in the outer wall of the water vapor guide pipe (2); The water vapor conveying auxiliary part (3) includes an air inlet fan (301) arranged on the feeding sealing cover (5) and an air outlet fan (302) arranged on the discharging sealing cover (6), the air inlet fan (301) is used for guiding air flow into the water vapor guide pipe (2), and the air pressure inside the water vapor guide pipe (2) is less than the air pressure inside the cylindrical furnace body (1).

2. The zircon sand drying apparatus of claim 1, wherein, The cylindrical furnace body (1) rotates inside the heating shell (4), the cylindrical furnace body (1) is provided with a contact wear-resistant rolling ring outside, and the bottom end of the heating shell (4) is provided with a supporting pad wheel (7).

3. The zircon sand drying apparatus of claim 1, wherein The cylindrical furnace body (1) is inclined to one end provided with the discharging sealing cover (6) inside, a plurality of evenly distributed material conveying spiral fins (8) are fixedly connected to the inner wall of the cylindrical furnace body (1), and a plurality of evenly distributed material lifting plates (9) are fixedly connected to the inner wall of the cylindrical furnace body (1) between the material conveying spiral fins (8).

4. The zircon sand drying apparatus of claim 1, wherein The air inlet holes (10) are all located at the bottom end of the outer wall of the water vapor guide pipe (2), and a plurality of evenly distributed counterweight blocks (11) are fixedly connected to the bottom of the outer wall of the water vapor guide pipe (2).

5. The zircon sand drying apparatus of claim 4, wherein, The air inlet fan (301) and the water vapor guide pipe (2) are located on the same axis, and the water vapor inside the cylindrical furnace body (1) enters the inside of the water vapor guide pipe (2) through the air inlet holes (10).

6. The zircon sand drying apparatus of claim 1, wherein, The air outlet fan (302) and the cylindrical furnace body (1) are located on the same axis, the inner wall of the cylindrical furnace body (1) is fixedly connected with a cross-shaped connecting frame (12) at both ends, a connecting rod (13) is arranged between the connecting frames (12), and the top of the water vapor guide pipe (2) is rotationally connected with the connecting rod (13).

7. The zircon sand drying apparatus of claim 1, wherein The cylindrical furnace body (1) is provided with a driven gear ring (14) in the middle of the outer wall, a driving motor (15) is arranged beside the bottom end of the outer wall of the heating shell (4), a driving gear (16) is arranged at the output end of the driving motor (15), and the driving gear (16) is engaged with the driven gear ring (14).

8. The zircon sand drying apparatus of claim 1, wherein, The feeding sealing cover (5) is fixedly connected with a feeding hopper (17) on the side away from the discharging sealing cover (6), and the discharging sealing cover (6) is fixedly connected with a discharging pipe (18) on the side away from the feeding sealing cover (5).

9. The zircon sand drying apparatus of claim 4, wherein, The counterweight blocks (11) are located at intervals of the air inlet holes (10), and the top of the water vapor guide pipe (2) is conical.

Images