Hot air circulation device for drying quartz sand

Abstract

The hot air circulation device comprises a feeding belt and a housing arranged on the feeding belt in a covering mode, the upper end of the housing is fixedly communicated with a plurality of convex shells and a fan cover in a linear array mode, the convex shells and the fan cover are arranged in a staggered mode, and lifting rods are slidably installed at the upper ends of the convex shells; the lifting rod extends into the convex shell, a T-shaped frame is fixedly installed at the lower end of the lifting rod, a sand stirring piece is connected to the end of the T-shaped frame, a hopper shell is elastically installed at the lower end of the T-shaped frame, a hopper plate is arranged at the lower end of the hopper shell in an attached mode, a closing piece is arranged between the hopper shell and the hopper plate, and a top column is slidably installed at the front end of the hopper shell; and the top column is pressed at the upper end of the bucket plate. The drying efficiency and the drying effect are improved, and it is ensured that quartz sand is smoothly moved to the bucket plate.

Description

Technical Field

[0001] This invention relates to the field of drying facilities, and more particularly to a hot air circulation device for drying quartz sand. Background Technology

[0002] Quartz sand is a non-metallic mineral raw material with quartz as its main component. Due to its excellent properties such as high temperature resistance, high hardness, strong chemical stability, and good insulation, it is widely used in various fields such as industrial production, building materials, and high technology, and is one of the indispensable basic raw materials in modern industry. During the processing of powdered quartz sand, hot air drying equipment is usually used to dry it to ensure that the quartz sand meets the requirements for subsequent use.

[0003] However, existing belt-type hot air drying devices have significant drawbacks in the drying of powdered quartz sand: on the one hand, the quartz sand is spread flat on the belt throughout the drying process, which directly obstructs the sand, greatly reducing the effective contact area between the sand and the hot air, resulting in insufficient heat exchange, prolonged drying cycle, and severely limiting drying efficiency; on the other hand, the quartz sand to be dried often contains powdery particles, which are prone to agglomeration due to residual moisture and interparticle adhesion. The resulting agglomerates are difficult for hot air to penetrate, leading to uneven drying inside and outside the agglomerates, ultimately resulting in poor overall drying performance. Therefore, providing a hot air circulation device for drying quartz sand is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of the prior art by proposing a hot air circulation device for drying quartz sand.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a hot air circulation device for drying quartz sand, comprising a feeding belt and a cover covering the feeding belt. Multiple convex shells and a wind hood are linearly arrayed and fixedly connected to the upper end of the cover. The convex shells and the wind hood are staggered. A lifting rod is slidably installed on the upper end of the convex shell, extending into the interior of the convex shell. A T-shaped frame is fixedly installed on the lower end of the lifting rod. A sand-dispensing component is connected to the end of the T-shaped frame. A bucket shell is elastically installed on the lower end of the T-shaped frame. A bucket plate is fitted against the lower end of the bucket shell. A closing component is provided between the bucket shell and the bucket plate. A top column is slidably installed on the front end of the bucket shell, pressing against the upper end of the bucket plate. A top rod is provided above the top column, fixed to the inner top surface of the convex shell. A wind hood is fixedly installed on the inner side of the convex shell behind the bucket shell. A crushing component is provided on the upper part of the inner side of the bucket shell.

[0006] Preferably, a hot air pipe is provided on one side of the cover, and the hot air pipe is fixedly connected to multiple air hoods. The hot air pipe extends into the interior of the convex shell and is fixedly connected to the air hood. A servo push cylinder is fixedly installed on the other side of the cover. A lifting seat is fixedly installed at the output end of the servo push cylinder. The upper end of the lifting rod is fixed to the lifting seat. A hopper is fixedly installed through the rear edge of the upper end of the cover. A gap is left between the lower end of the hopper, the lower end of the air hood, and the upper end of the feeding belt.

[0007] Preferably, two uprights are symmetrically fixedly installed on the upper end of the bucket shell, the T-shaped frame is slidably installed on the outer surface of the two uprights, a spring body is wound around the outside of the uprights, the two ends of the spring body are fixed to the T-shaped frame and the bucket shell respectively, a rod cap is coaxially fixedly installed at the end of the uprights, and the lower end of the bucket plate is raised on both sides.

[0008] Preferably, the sand-dispensing component includes a first protective shell, which is fixed to the bucket shell. A toothed plate is slidably installed at the rear end of the first protective shell. The toothed plate extends through the upper end of the first protective shell and is fixedly attached to the end of the T-shaped frame. A gear meshes with the lower part of the toothed plate, and a connecting shaft is fixedly installed through the middle of the gear. The connecting shaft extends through both sides of the first protective shell and is rotatably engaged with the first protective shell. A blade shaft is provided at the rear of the bucket shell. Multiple dispensing blades are fixedly installed in a circular array on the outer surface of the blade shaft, and the blade shaft is connected to the connecting shaft.

[0009] Preferably, a second protective shell is provided on both sides of the first protective shell. The second protective shell is fixed to the bucket shell. The end of the connecting shaft and the end of the plate shaft pass through the interior of the second protective shell. The connecting shaft and the plate shaft are rotatably engaged with the second protective shell. A belt is connected between the end of the connecting shaft and the end of the plate shaft through a pulley.

[0010] Preferably, the closure includes two sliding sleeves that are elastically connected to the bucket shell. Two flaps extend symmetrically from the front end of the bucket plate. A fixing frame is rotatably mounted on the upper end of each flap, and the end of the fixing frame is fixed to the bucket shell. A connecting frame is rotatably mounted on the front end of each sliding sleeve, and the end of the connecting frame is rotatably connected to the end of the flap.

[0011] Preferably, an extension frame is fixedly installed at the upper edge of the bucket shell, a limiting post is fixedly installed through the end of the extension frame, a sliding sleeve is slidably installed on the outer surface of the limiting post, a compression spring is wound around the outside of the limiting post, and the two ends of the compression spring are fixed to the extension frame and the sliding sleeve respectively.

[0012] Preferably, the crushing component includes a pressing seat slidably installed on the upper inner side of the bucket shell, a baffle fixedly installed in the middle of the inner side of the bucket shell, a plurality of pressing plates of the pressing seat passing through the lower end of the baffle, the plurality of pressing plates of the pressing seat slidingly engaging with the baffle, a pressing frame fixedly installed in the middle of the upper end of the pressing seat, the pressing frame slidingly passing through the upper end of the bucket shell, and the pressing frame elastically connected to the bucket shell.

[0013] Preferably, connecting rods are rotatably mounted on both sides of the pressure frame, and a horizontal pusher is rotatably mounted on the ends of the two connecting rods. A slide block is slidably mounted on the lower part of the horizontal pusher, and the slide block is fixed to the bucket shell. Wave plates extend from both sides of the interior of the convex shell. A guide wheel is mounted on the end of the horizontal pusher, and the guide wheel is pressed against the wave plate. A locking frame is fixedly mounted on the upper end of the horizontal pusher. Lugs extend from the side of the slide sleeve, and the lugs are aligned with the grooves on the locking frame.

[0014] Preferably, a guide post is slidably mounted through the end of the pressure frame, the lower end of the guide post is fixed to the bucket shell, a return spring is wound around the outside of the guide post, the two ends of the return spring are respectively fixed to the pressure frame and the bucket shell, and a column cap is coaxially fixedly mounted on the end of the guide post.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. By lowering the lifting rod, the bucket plate can be moved down to press against the upper end of the feeding belt, so that the quartz sand conveyed on the feeding belt can be intercepted and moved to the bucket plate. Then, the lifting rod moves the quartz sand intercepted on the bucket plate upward. During the upward movement, the top column will contact the top rod. Then, the lifting rod continues to move the bucket plate upward. At this time, the top column is supported by the top rod and exerts a downward thrust on the bucket plate, causing the bucket plate to flip down. The quartz sand intercepted on the bucket plate slides down and falls back onto the feeding belt. During the falling process, hot air will be blown out through multiple air holes on the air shell and come into contact with the falling quartz sand, thereby increasing the contact area between the quartz sand and the hot air and improving the drying efficiency.

[0017] 2. After the lifting rod moves the bucket plate down and presses against the upper end of the feeding belt, the lifting rod will continue to move down. At this time, the spring body deforms, so that the T-shaped frame slides down on the upright and drives the toothed plate down to drive the gear to rotate, thereby driving the paddle on the plate shaft to rotate, so as to push the quartz sand on the feeding belt toward the bucket plate, thus ensuring that the quartz sand is smoothly moved to the bucket plate.

[0018] 3. As the lifting rod moves the bucket plate upward, the corrugated plates on both sides push the two horizontal push frames to move in opposite directions. During this movement, the grooves of the locking frames on the horizontal push frames engage with the lugs, keeping the bucket plate horizontal. At the same time, the moving horizontal push frames also drive the connecting rod to move, pushing the pressure frame downward, which in turn moves the pressing seat downward to press the quartz sand on the bucket plate. This crushes any lumps of quartz sand, ensuring that the quartz sand is fully in contact with the hot air and improving the drying effect. Attached Figure Description

[0019] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0020] Figure 1 This is a schematic diagram of the structure of a hot air circulation device for drying quartz sand according to the present invention;

[0021] Figure 2 This is an internal view of the convex shell of a hot air circulation device for drying quartz sand according to the present invention;

[0022] Figure 3 This invention relates to a hot air circulation device for drying quartz sand. Figure 2 Enlarged view of A in the middle;

[0023] Figure 4 This invention relates to a hot air circulation device for drying quartz sand. Figure 2 Enlarged view of B in the middle;

[0024] Figure 5 This is a schematic diagram of the hopper shell of a hot air circulation device for drying quartz sand according to the present invention;

[0025] Figure 6 This invention relates to a hot air circulation device for drying quartz sand. Figure 5 Enlarged view of C;

[0026] Figure 7 This is an internal view of the hopper shell of a hot air circulation device for drying quartz sand according to the present invention.

[0027] Figure 8 This is a schematic diagram of the hopper shell of a hot air circulation device for drying quartz sand according to the present invention;

[0028] Figure 9 This is an internal view of the second protective shell of a hot air circulation device for drying quartz sand according to the present invention;

[0029] Figure 10 This is an internal view of the first protective shell of a hot air circulation device for drying quartz sand according to the present invention.

[0030] In the diagram: 1. Feeding belt; 2. Cover; 3. Air hood; 4. Convex shell; 5. Hot air duct; 6. Lifting rod; 7. Lifting seat; 8. Servo push cylinder; 9. Baffle; 10. Pressing seat; 11. Hopper shell; 12. Hopper plate; 13. Top rod; 14. Air casing; 15. Corrugated plate; 16. Horizontal push frame; 17. Guide wheel; 18. Slide seat; 19. T-shaped frame; 20. Upright pole; 21. Rod cap; 22. Spring body; 23. No. 1 protective shell; 24. 1. Pressure frame; 25. Guide column; 26. Column cap; 27. Return spring; 28. Top column; 29. ​​Extension frame; 30. Limiting column; 31. Compression spring; 32. Connecting frame; 33. Fixing frame; 34. Flip plate; 35. Sliding sleeve; 36. Lug; 37. Locking frame; 38. Connecting rod; 39. No. 2 protective shell; 40. Paddle; 41. Toothed plate; 42. Connecting shaft; 43. Belt; 44. Plate shaft; 45. Gear; 46. Hopper. Detailed Implementation

[0031] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention.

[0032] Example 1

[0033] like Figures 1-10 The hot air circulation device for drying quartz sand shown includes a feeding belt 1 and a cover 2 covering the feeding belt 1. The cover 2 serves to collect quartz sand on the feeding belt 1. Multiple convex shells 4 and a fan hood 3 are linearly arrayed and fixedly connected to the upper end of the cover 2. The convex shells 4 serve a load-bearing function, and the convex shells 4 and the fan hood 3 are staggered. Hot air is blown out through the fan hood 3 to dry the quartz sand spread flat on the feeding belt 1. A lifting rod 6 is slidably installed on the upper end of the convex shell 4, extending into the interior of the convex shell 4. A T-shaped frame 19 is fixedly installed on the lower end of the lifting rod 6, driving the T-shaped frame 19 to rise and fall. A sand-dispensing component is connected to the end of the T-shaped frame 19, and a hopper shell 11 is elastically installed on the lower end of the T-shaped frame 19. A bucket plate 12 is fitted at the lower end, which intercepts the quartz sand. A closing member is provided between the bucket shell 11 and the bucket plate 12. A top column 28 is slidably installed at the front end of the bucket shell 11, and the top column 28 presses against the upper end of the bucket plate 12. A top rod 13 is provided above the top column 28, and the top rod 13 is fixed to the inner top surface of the convex shell 4. The top column 28 is supported by the top rod 13, which generates a downward thrust on the bucket plate 12, causing the bucket plate 12 to flip down, allowing the quartz sand intercepted on the bucket plate 12 to slide down and fall back onto the feeding belt 1. An air shell 14 is fixedly installed on the inner side of the convex shell 4 behind the bucket shell 11. Hot air is blown out through multiple air holes on the air shell 14 and comes into contact with the falling quartz sand to dry it. A crushing member is provided on the upper inner side of the bucket shell 11.

[0034] A hot air duct 5 is provided on one side of the casing 2. The hot air duct 5 is connected to an external hot air generator, allowing hot air to be sent into the air shell 14 and the air shroud 3 through the hot air duct 5. Since generating hot air using a hot air generator is existing technology and has been widely used, it is not described in detail here. The hot air duct 5 is fixedly connected to multiple air shrouds 3. The hot air duct 5 extends into the interior of the convex shell 4 and is fixedly connected to the air shell 14. The airflow from the air shrouds 3 and the air shell 14 is relatively weak to avoid scattering the quartz sand. The other side of the casing 2 is fixedly connected to the air shroud 3. A servo pusher cylinder 8 is fixedly installed, and a lifting seat 7 is fixedly installed at the output end of the servo pusher cylinder 8. The upper end of the lifting rod 6 is fixed to the lifting seat 7. The servo pusher cylinder 8 can drive the lifting rod 6 on the lifting seat 7 to move up and down. A hopper 46 is fixedly installed through the rear edge of the upper end of the cover 2. A gap is left between the lower end of the hopper 46, the lower end of the air shell 14 and the upper end of the feeding belt 1, so that the quartz sand can be discharged through the gap. In this way, the bottom of the hopper 46 and the air shell 14 are used to push and scrape the quartz sand, so that the quartz sand is spread evenly on the feeding belt 1 and avoids accumulation.

[0035] Two uprights 20 are symmetrically fixedly installed on the upper end of the bucket shell 11. A T-shaped frame 19 is slidably installed on the outer surface of the two uprights 20. The uprights 20 serve to allow the T-shaped frame 19 to slide. A spring body 22 is wound around the outside of the uprights 20. The two ends of the spring body 22 are fixed to the T-shaped frame 19 and the bucket shell 11, respectively. When the bucket plate 12 presses against the upper end of the feeding belt 1 and the lifting rod 6 continues to move down, the spring body 22 will deform, allowing the lifting rod 6 to continue to move down. A rod cap 21 is coaxially fixedly installed at the end of the uprights 20. The rod cap 21 serves to position the bucket. The lower ends of the bucket plate 12 are raised on both sides to prevent the bottom of the bucket plate 12 from pressing completely on the quartz sand on the feeding belt 1 and affecting the conveying of the quartz sand. Ball bearings can be added to the raised lower ends of the bucket plate 12 to reduce the friction between the bucket plate 12 and the feeding belt 1.

[0036] The sand-removing component includes a first protective shell 23, which is fixed to the bucket shell 11. A toothed plate 41 is slidably installed at the rear end of the first protective shell 23, serving as a protective cover. The toothed plate 41 extends through the upper end of the first protective shell 23 and is fixedly attached to the end of the T-shaped frame 19. A gear 45 meshes with the lower part of the toothed plate 41, and a connecting shaft 42 is fixedly installed through the middle of the gear 45. The connecting shaft 42 serves to support the gear 45 and extends from both sides of the first protective shell 23. The connecting shaft 42 is rotatably engaged with the first protective shell 23. A blade shaft 44 is provided at the rear of the bucket shell 11. Multiple paddles 40 are fixedly installed in a ring array on the outer surface of the blade shaft 44. The blade shaft 44 serves to support the paddles 40. The toothed plate 41 moves down to drive the gear 45 to rotate, thereby driving the paddles 40 on the blade shaft 44 to rotate, so as to push the quartz sand on the feeding belt 1 towards the bucket plate 12, so that the quartz sand conveyed on the feeding belt 1 can be intercepted and moved to the bucket plate 12. The blade shaft 44 is connected to the connecting shaft 42.

[0037] A second protective shell 39 is provided on both sides of the first protective shell 23. The second protective shell 39 serves to cover and protect the shell. The second protective shell 39 is fixed to the hopper shell 11. The end of the connecting shaft 42 and the end of the plate shaft 44 pass through the interior of the second protective shell 39. The connecting shaft 42 and the plate shaft 44 are rotatably engaged with the second protective shell 39. A belt 43 is connected between the end of the connecting shaft 42 and the end of the plate shaft 44 through a pulley. The belt 43 serves to connect the connecting shaft 42 and the plate shaft 44 together.

[0038] Example 2

[0039] like Figures 1-10The hot air circulation device for drying quartz sand shown includes a feeding belt 1 and a cover 2 covering the feeding belt 1. The cover 2 serves to collect quartz sand on the feeding belt 1. Multiple convex shells 4 and a fan hood 3 are linearly arrayed and fixedly connected to the upper end of the cover 2. The convex shells 4 serve a load-bearing function, and the convex shells 4 and the fan hood 3 are staggered. Hot air is blown out through the fan hood 3 to dry the quartz sand spread flat on the feeding belt 1. A lifting rod 6 is slidably installed on the upper end of the convex shell 4, extending into the interior of the convex shell 4. A T-shaped frame 19 is fixedly installed on the lower end of the lifting rod 6, driving the T-shaped frame 19 to rise and fall. A sand-dispensing component is connected to the end of the T-shaped frame 19, and a hopper shell 11 is elastically installed on the lower end of the T-shaped frame 19. A bucket plate 12 is fitted at the lower end, which intercepts the quartz sand. A closing member is provided between the bucket shell 11 and the bucket plate 12. A top column 28 is slidably installed at the front end of the bucket shell 11, and the top column 28 presses against the upper end of the bucket plate 12. A top rod 13 is provided above the top column 28, and the top rod 13 is fixed to the inner top surface of the convex shell 4. The top column 28 is supported by the top rod 13, which generates a downward thrust on the bucket plate 12, causing the bucket plate 12 to flip down, allowing the quartz sand intercepted on the bucket plate 12 to slide down and fall back onto the feeding belt 1. An air shell 14 is fixedly installed on the inner side of the convex shell 4 behind the bucket shell 11. Hot air is blown out through multiple air holes on the air shell 14 and comes into contact with the falling quartz sand to dry it. A crushing member is provided on the upper inner side of the bucket shell 11.

[0040] The closure includes two sliding sleeves 35, which are elastically connected to the bucket shell 11. Two flaps 34 extend symmetrically from the front end of the bucket plate 12. A fixing frame 33 is rotatably mounted on the upper end of the flaps 34. The fixing frame 33 serves to connect the flaps 34. The end of the fixing frame 33 is fixed to the bucket shell 11. A connecting frame 32 is rotatably mounted on the front end of the sliding sleeves 35. The end of the connecting frame 32 is rotatably connected to the end of the flaps 34. When the sliding sleeves 35 move downward, they can drive the connecting frame 32 to move and push the flaps 34, so that the flaps 34 can rotate. This, in turn, drives the downward-flipped bucket plate 12 to rotate upward and reset to fit against the lower end of the bucket shell 11.

[0041] An extension frame 29 is fixedly installed at the upper edge of the casing 11. A limiting post 30 is fixedly installed through the end of the extension frame 29. The extension frame 29 serves to fix the limiting post 30. A sliding sleeve 35 is slidably installed on the outer surface of the limiting post 30. The limiting post 30 serves to allow the sliding sleeve 35 to slide. A compression spring 31 is wound around the outside of the limiting post 30. The two ends of the compression spring 31 are fixed to the extension frame 29 and the sliding sleeve 35 respectively. The compression spring 31 serves to allow the sliding sleeve 35 to move downward.

[0042] The crushing component includes a pressing seat 10 that is slidably installed on the upper inner side of the hopper shell 11. The pressing seat 10 moves down to press the quartz sand on the hopper plate 12, crushing the lumps mixed in the quartz sand. This ensures that the quartz sand is fully in contact with the hot air, thereby improving the drying effect. A baffle 9 is fixedly installed in the middle of the inner side of the hopper shell 11. Multiple pressing plates of the pressing seat 10 extend through the lower end of the baffle 9. The baffle 9 can push out the quartz sand remaining between the multiple pressing plates. The multiple pressing plates of the pressing seat 10 slide in cooperation with the baffle 9. A pressing frame 24 is fixedly installed in the middle of the upper end of the pressing seat 10. The pressing frame 24 drives the pressing seat 10 to move. The pressing frame 24 slides through the upper end of the hopper shell 11 and is elastically connected to the hopper shell 11.

[0043] Both sides of the pressure frame 24 are rotatably mounted with connecting rods 38. A horizontal pusher 16 is rotatably mounted at the end of each connecting rod 38. A slide block 18 is slidably mounted on the lower part of the horizontal pusher 16, serving to guide the horizontal pusher 16. The slide block 18 is fixed to the bucket shell 11. Wave plates 15 extend from both sides of the interior of the convex shell 4. A guide wheel 17 is mounted at the end of the horizontal pusher 16, reducing friction. The guide wheel 17 is pressed against the wave plate 15. A locking frame 37 is fixedly mounted on the upper end of the horizontal pusher 16. The sliding sleeve 35... The side extends with lugs 36, which are aligned with the grooves on the locking frame 37. The wave plates 15 on both sides push the two horizontal push frames 16 to move towards each other. During the movement towards each other, the grooves on the locking frame 37 on the horizontal push frame 16 will engage with the lugs 36, keeping the bucket plate 12 horizontal and ensuring that the bucket plate 12 will not tip over during the pressing process of the pressing seat 10. At the same time, the horizontal push frames 16 moving towards each other will also drive the connecting rod 38 to move, so as to push the pressing frame 24 down, thereby driving the pressing seat 10 down to press the quartz sand on the bucket plate 12.

[0044] A guide post 25 is slidably mounted through the end of the pressure frame 24. The lower end of the guide post 25 is fixed to the hopper shell 11. The guide post 25 serves to allow the pressure frame 24 to slide. A return spring 27 is wound around the outside of the guide post 25. The two ends of the return spring 27 are fixed to the pressure frame 24 and the hopper shell 11, respectively. The return spring 27 can push the pressure frame 24 to move upward, thereby driving the pressure plate seat 10 to move upward and reset. A column cap 26 is coaxially fixedly mounted on the end of the guide post 25. The column cap 26 serves to limit the movement.

[0045] In use, quartz sand is added from hopper 46. At this time, the feeding belt 1 rotates, allowing the quartz sand to be discharged from the gap between hopper 46 and feeding belt 1, so that it is spread evenly on feeding belt 1. Then, hot air from hot air pipe 5 is blown out through air hood 3 to dry the quartz sand spread evenly on feeding belt 1. At the same time, servo push cylinder 8 works to drive the lifting rod 6 on lifting seat 7 to move down, so that the lowering lifting rod 6 drives the bucket plate 12 to move down and press against the upper end of feeding belt 1. Then the lifting rod 6 continues to move down, at which time the spring body 22 deforms, so as to utilize the continued downward movement of the lifting rod. The lifting rod 6 drives the T-shaped frame 19 to slide down on the upright 20, thereby driving the toothed plate 41 to move down and push the gear 45 to rotate. This, in turn, drives the paddle 40 on the plate shaft 44 to rotate, so that the quartz sand on the feeding belt 1 is pushed towards the bucket plate 12, so that the quartz sand conveyed on the feeding belt 1 can be intercepted and moved onto the bucket plate 12. Then, the lifting rod 6 drives the quartz sand intercepted on the bucket plate 12 to move up. During the upward movement, the wave plates 15 on both sides will push the two horizontal push frames 16 to move towards each other. During the opposite movement, the groove of the locking frame 37 on the horizontal push frame 16 will engage with the lug 36. This keeps the bucket plate 12 horizontal. Simultaneously, the opposing horizontal pusher 16 moves the connecting rod 38, pushing the pressure frame 24 downwards. This, in turn, moves the pressing seat 10 downwards to press the quartz sand on the bucket plate 12, crushing any lumps within the quartz sand. This ensures the quartz sand is fully in contact with the hot air. After moving upwards a certain distance, the guide wheel 17 on the horizontal pusher 16 rolls precisely on the vertical surface above the wave plate 15, while the top column 28 on the bucket shell 11 contacts the top rod 13. Then, the lifting rod 6 continues to move the bucket plate 12 upwards. At this time, the top column 28 is supported by the top rod 13 and exerts a downward thrust on the bucket plate 12, causing the bucket plate 12 to flip down, allowing the quartz sand intercepted on the bucket plate 12 to slide down and fall back onto the feeding belt 1. During the falling process, the hot air in the hot air pipe 5 will be blown out through multiple air holes on the air shell 14 and come into contact with the falling quartz sand, thereby increasing the contact area between the quartz sand and the hot air. Then the feeding belt 1 continues to transport the quartz sand. When it is transported to the next convex shell 4, the above operation will be repeated, and so on, until the quartz sand is completely dried and discharged from the discharge end of the feeding belt 1.

[0046] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A hot air circulating device for drying quartz sand, comprising a feeding belt (1) and a cover (2) covering the feeding belt (1), characterized in that: The upper end linear array of the cover shell (2) is fixedly communicated with a plurality of convex shells (4) and a wind cover (3), the convex shell (4) and the wind cover (3) are arranged in a staggered manner, the upper end of the convex shell (4) is slidably installed with a lifting rod (6), the lifting rod (6) extends into the inside of the convex shell (4), the lower end of the lifting rod (6) is fixedly installed with a T-shaped frame (19), the end of the T-shaped frame (19) is connected with a sand shifting piece, the lower end of the T-shaped frame (19) is elastically installed with a bucket shell (11), the lower end of the bucket shell (11) is abutted with a bucket plate (12), a closing piece is arranged between the bucket shell (11) and the bucket plate (12), the front end of the bucket shell (11) is slidably installed with a jacking column (28), the jacking column (28) is pressed on the upper end of the bucket plate (12), the top of the jacking column (28) is provided with a jacking rod (13), the jacking rod (13) is fixed with the inner top surface of the convex shell (4), the inside of the convex shell (4) is fixedly installed with a wind shell (14) behind the bucket shell (11), the inside of the bucket shell (11) is provided with a crushing piece on the upper portion.

2. The hot air circulating device for drying quartz sand according to claim 1, characterized in that: One side of the cover shell (2) is provided with a hot air pipe (5), the hot air pipe (5) is fixedly communicated with a plurality of wind covers (3), the hot air pipe (5) extends into the inside of the convex shell (4), the hot air pipe (5) is fixedly communicated with the wind shell (14), the other side of the cover shell (2) is fixedly installed with a servo push cylinder (8), the output end of the servo push cylinder (8) is fixedly installed with a lifting seat (7), the upper end of the lifting rod (6) is fixed with the lifting seat (7), the upper end rear edge of the cover shell (2) is fixedly installed with a hopper (46), a gap is left between the lower end of the hopper (46), the lower end of the wind shell (14) and the upper end of the feeding belt (1).

3. The hot air circulating device for drying quartz sand according to claim 1, characterized in that: The upper end of the bucket shell (11) is fixedly installed with two vertical rods (20) in a symmetrical manner, the T-shaped frame (19) is slidably installed on the outer surface of the two vertical rods (20), the outer side of the vertical rod (20) is wound with a spring body (22), the two ends of the spring body (22) are respectively fixed with the T-shaped frame (19) and the bucket shell (11), the end of the vertical rod (20) is coaxially fixedly installed with a rod cap (21), the lower end of the bucket plate (12) is provided in a convex manner at the two side edges.

4. The hot air circulating device for drying quartz sand according to claim 1, characterized in that: The sand shifting piece comprises a No. 1 protective shell (23), the No. 1 protective shell (23) is fixed with the bucket shell (11), the inside rear end of the No. 1 protective shell (23) is slidably installed with a toothed plate (41), the toothed plate (41) penetrates out from the upper end of the No. 1 protective shell (23), the toothed plate (41) is fixedly penetrated on the end of the T-shaped frame (19), the lower portion of the toothed plate (41) is engaged with a gear (45), the middle portion of the gear (45) is fixedly installed with a connecting shaft (42), the connecting shaft (42) penetrates out from the two sides of the No. 1 protective shell (23), the connecting shaft (42) is rotatably matched with the No. 1 protective shell (23), a sheet shaft (44) is arranged behind the bucket shell (11), a plurality of shifting sheets (40) are fixedly installed on the outer surface of the sheet shaft (44) in an annular array, the sheet shaft (44) is connected with the connecting shaft (42).

5. The hot air circulating device for drying quartz sand according to claim 4, characterized in that: Two second protective shells (39) are arranged on both sides of the first protective shell (23), the second protective shell (39) is fixed with the bucket shell (11), the end of the connecting shaft (42) and the end of the piece shaft (44) penetrate the inside of the second protective shell (39), the connecting shaft (42) and the piece shaft (44) are rotationally connected with the second protective shell (39), and the end of the connecting shaft (42) and the end of the piece shaft (44) are connected with the belt (43) through a belt wheel.

6. The hot air circulating device for drying quartz sand according to claim 1, characterized in that: The closing piece comprises two sliding sleeves (35), the two sliding sleeves (35) are elastically connected with the bucket shell (11), the front end of the bucket plate (12) symmetrically extends two turning plates (34), the upper end of the turning plate (34) is rotationally installed with a fixing frame (33), the end of the fixing frame (33) is fixed with the bucket shell (11), the front end of the sliding sleeve (35) is rotationally installed with a connecting frame (32), and the end of the connecting frame (32) is rotationally connected with the end of the turning plate (34).

7. The hot air circulating device for drying quartz sand according to claim 6, characterized in that: The upper end edge of the bucket shell (11) is fixedly installed with an extending frame (29), the end of the extending frame (29) penetrates and is fixedly installed with a limiting column (30), the sliding sleeve (35) is slidingly installed on the outer surface of the limiting column (30), the outer side of the limiting column (30) is wound with a compression spring (31), and the two ends of the compression spring (31) are fixed with the extending frame (29) and the sliding sleeve (35) respectively.

8. The hot air circulating device for drying quartz sand according to claim 6, characterized in that: The crushing piece comprises a pressing piece seat (10) slidingly installed on the inner side of the upper portion of the bucket shell (11), a baffle (9) is fixedly installed on the inner side of the middle portion of the bucket shell (11), a plurality of pressing pieces of the pressing piece seat (10) penetrate out from the lower end of the baffle (9), the plurality of pressing pieces of the pressing piece seat (10) are slidingly connected with the baffle (9), a pressing frame (24) is fixedly installed on the upper end of the pressing piece seat (10), the pressing frame (24) slidingly penetrates out from the upper end of the bucket shell (11), and the pressing frame (24) is elastically connected with the bucket shell (11).

9. The hot air circulating device for drying quartz sand according to claim 8, characterized in that: Rotational installation is performed on the two sides of the pressing frame (24), the ends of the two connecting frame rods (38) are rotationally installed with horizontal pushing frames (16), the lower portion of the horizontal pushing frame (16) is slidingly installed with a sliding seat (18), the sliding seat (18) is fixed with the bucket shell (11), the inside of the convex shell (4) extends on both sides, the end of the horizontal pushing frame (16) is installed with a guide wheel (17), the guide wheel (17) is tightly arranged on the wave plate (15), the upper end of the horizontal pushing frame (16) is fixedly installed with a locking frame (37), the side of the sliding sleeve (35) extends with a lug (36), the lug (36) is aligned with the groove on the locking frame (37).

10. The hot air circulating device for drying quartz sand according to claim 8, characterized in that: The end of the pressing frame (24) penetrates and is slidingly installed with a guide column (25), the lower end of the guide column (25) is fixed with the bucket shell (11), the outer side of the guide column (25) is wound with a return spring (27), the two ends of the return spring (27) are fixed with the pressing frame (24) and the bucket shell (11) respectively, and the end of the guide column (25) is coaxially fixedly installed with a column cap (26).

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