Closed box drying equipment

Abstract

The utility model discloses closed box drying equipment, and mainly relates to the technical field of drying. Comprising a closed box body, a lower hot air mechanism and an upper hot air mechanism are sequentially arranged in the box body from bottom to top, the lower hot air mechanism comprises a lower air box fixed relative to the box body, a plurality of lower strip-shaped openings are formed in the top face of the lower air box, and the upper hot air mechanism comprises an upper air box capable of being adjusted in a lifting mode relative to the box body. A plurality of lower strip-shaped openings are formed in the bottom face of the upper air bellow, a plurality of upper strip-shaped openings are formed in the bottom face of the upper air bellow, the lower strip-shaped openings and the upper strip-shaped openings correspond to each other in size and are arranged in a staggered mode, air guide boxes are fixed to the lower strip-shaped openings and the upper strip-shaped openings respectively, air outlet channels are formed in the opposite sides of the air guide boxes, and the air outlet direction of each air outlet channel is inclined by 45 degrees relative to the horizontal plane. Conveying rollers driven by a motor are arranged at the two ends in the box body respectively. The sheet drying device has the beneficial effects that the surface of a sheet can be dried by soft and uniform hot air, uniform and thorough drying is facilitated, and the film forming effect is good.

Description

Technical Field

[0001] This utility model relates to the field of drying technology, specifically a closed-type box drying device. Background Technology

[0002] Drying ovens are widely used equipment in industry and laboratories, primarily for processes such as drying, curing, aging, and sterilizing materials. In the field of water treatment membrane preparation, the use of drying ovens is particularly crucial because it involves the drying and curing processes of membrane materials.

[0003] Because it is used to remove moisture from the surface of materials and cure the membrane material coated on the support to form a stable membrane structure, the control of the hot air blown onto the membrane surface is crucial. Excessive temperature and strong airflow may damage the membrane structure, while insufficient temperature may negatively impact drying and curing, resulting in incomplete drying and curing. Utility Model Content

[0004] The purpose of this invention is to provide a closed-type box drying device that can gently and evenly dry the surface of sheet materials with hot air, which is conducive to uniform and thorough drying and good film formation effect.

[0005] To achieve the above objectives, this utility model employs the following technical solution:

[0006] A closed-type box drying device includes a closed box. A lower hot air mechanism and an upper hot air mechanism are arranged sequentially from bottom to top inside the box. The lower hot air mechanism includes a lower air box fixed relative to the box, with multiple lower strip-shaped openings on its top surface. The upper hot air mechanism includes an upper air box that is adjustable in height relative to the box, with multiple upper strip-shaped openings on its bottom surface. The lower and upper strip-shaped openings are of corresponding sizes and staggered. Air guide boxes are fixed to the lower and upper strip-shaped openings respectively. An air outlet channel is provided on the opposite side of each air guide box, and the air outlet direction of the air outlet channel is inclined at 45 degrees relative to the horizontal plane. Motor-driven conveyor rollers are respectively provided at both ends of the box.

[0007] The lower and upper air boxes are respectively provided with interfaces, and a fan is installed on the interface or connected to an air source. The air source is a hot air source. Alternatively, a thermal resistor is installed inside the lower and upper air boxes.

[0008] The top of the box is provided with a top plate, the bottom of the box is provided with a bottom plate, and the sides of the box are provided with side plates. One end of the box is a feeding end plate, and the other end is a discharging end plate. The feeding end plate and the discharging end plate are respectively provided with a material passage extending horizontally along their width direction.

[0009] Multiple ear plates are fixed on both sides of the upper air box. A first screw is passed through the ear plate, and multiple first nuts are fitted on the first screw. The top end of the first screw is fixed to the top of the box body.

[0010] The bottom side of the air guide box is provided with a lower box opening that is adapted to or slightly larger than the upper / lower strip opening. The two ends of the air guide box are respectively provided with end panels. The top of the air guide box is provided with an upper box opening corresponding to its length. A horizontal baffle is provided at the upper box opening. The two ends of the baffle are respectively fixed to the top side of the end panel on the same side. The two sides of the baffle are respectively provided with integrally formed folding plates. The folding plates are at a 135-degree angle to the baffle. Air guide plates are provided on both sides of the upper box opening. The air guide plates are parallel to the folding plates. The gap between the air guide plates and the folding plates forms an air outlet channel.

[0011] The lower box opening has a rectangular frame structure edging plate on its periphery. The edging plate extends horizontally outward and has multiple mounting holes. Screws are installed in the mounting holes to fix the edging plate to the periphery of the upper / lower slot.

[0012] Material guiding mechanisms are installed on both sides of the air guide box of the upper hot air mechanism. The material guiding mechanism includes an installation plate fixedly installed to the side wall of the air guide box of the upper air box. A vertically extending strip plate is fixed on the installation plate. A vertically extending strip slot is passed through the strip plate. A guide roller is provided between the strip plates. A guide roller shaft is rotatably connected to the guide roller through the guide roller. Both ends of the guide roller shaft pass through the strip slot on the same side and slide up and down with it. Locking caps are threaded to both ends of the guide roller shaft.

[0013] Material guiding mechanisms are installed on both sides of the air guide box of the upper hot air mechanism. The material guiding mechanism includes an installation plate fixedly installed to the side wall of the air guide box of the upper air box. The outer end of the installation plate is provided with a swing frame that is hinged to it. A smooth rod is provided between the two swing frames. The smooth rod is a clean metal round rod. An arc plate is also fixed on the outer side of the installation plate. An arc hole is passed through the arc plate. The arc hole is coaxially arranged with the swing of the swing rod. The upper part of the swing rod is provided with a threaded rod that passes through the arc hole. A locking cap is fitted on the threaded rod.

[0014] Adjustable height portal frames are provided at both ends of the box body. Vertical sliding holes are provided near both ends of the side plates. Conveying roller shafts are provided at both ends of the conveying roller. The conveying roller shafts pass through the sliding holes and are slidably connected to the sliding holes. The two ends of the conveying roller are rotatably connected to the bottom of the portal frame.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] The staggered upper and lower air outlet channels provide a 45-degree angled airflow to the sheet surface, avoiding direct airflow. This angle effectively dries the sheet surface and facilitates diffusion along the surface without disrupting the curing process. Furthermore, the adjustable spacing between the upper and lower air outlets allows for control over the airflow intensity and drying effect, preventing overheating and achieving a uniform and controllable drying process. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the internal structure of Embodiment 1 of this utility model.

[0018] Figure 2 This is a cross-sectional view of the internal structure of Embodiment 1 of this utility model.

[0019] Figure 3 This is a utility model Figure 2 Enlarged view of part I.

[0020] Figure 4 This is a schematic diagram of the material guiding mechanism of Embodiment 1 of this utility model.

[0021] Figure 5 This is a schematic diagram of the material guiding mechanism in Embodiment 2 of this utility model.

[0022] Figure 6 This is a schematic diagram of the upper air box of this utility model.

[0023] Figure 7 This is a schematic diagram of the components inside the housing of this utility model.

[0024] Figure 8 This is a schematic diagram of the overall structure of Embodiment 3 of this utility model.

[0025] The labels shown in the attached diagram:

[0026] 1. Side plate; 2. Top plate; 3. Feed end plate; 4. Upper air box; 5. Ear plate; 6. First screw; 7. Upper strip opening; 8. Pillow strip; 9. Lower air box; 10. Lower strip opening; 11. Air guide box; 12. Edge plate; 13. End panel; 14. Baffle; 15. Folding plate; 16. Air guide plate; 17. Air outlet channel; 18. Mounting plate; 19. Strip plate; 20. Strip groove hole; 21. Locking cap; 22. Guide roller shaft; 23. Conveyor roller shaft; 24. Smooth rod; 25. Swing frame; 26. Arc plate; 27. Arc hole; 28. Threaded rod; 29. ​​Portal frame; 30. Second screw; 31. Sliding hole; 32. Material passage. Detailed Implementation

[0027] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the present invention, and these equivalent forms also fall within the scope defined in this application.

[0028] Example 1:

[0029] This example uses a closed box structure, primarily for air supply to the membrane surface. Its main structure includes:

[0030] The box body is a rectangular, closed structure extending in a straight line. One end of the box body is an inlet plate 3, and the other end is an outlet plate. Both the inlet and outlet plates have horizontally extending feed ports 32 for passing sheet material. The box body has a top plate 2 and a bottom plate. Side plates 1 are located on both sides of the box body, with the outlet and inlet plates 3 positioned at opposite ends of each side plate 1. All sheet material is made of stainless steel, forming the closed structure of the box body. A frame structure can be added inside the box body as needed.

[0031] The upper hot air mechanism is vertically mounted on the upper part of the housing. This mechanism includes a closed upper air box 4, which is also a rectangular closed structure. The length of the upper air box 4 corresponds to the length of the housing. Multiple ear plates 5 are fixed to the two sides of the upper air box 4, each with a triangular support structure. The ear plates 5 can be symmetrically arranged relative to the sides of the upper air box 4, with two ear plates on each side, or the number can be increased depending on the size of the air box. A first screw 6 passes through the ear plate 5, and two first nuts are fitted on the first screw 6, located above and below the ear plate 5 respectively. The top of the first screw 6 is fixed to the top plate 2 of the housing. Adjusting the first nuts allows adjustment of the relative height of the upper air box 4 within the housing, thereby changing its relative distance to the lower air box 9 and adjusting the airflow. Five upper strip-shaped openings 7 are equidistantly arranged along the length of the bottom end face of the upper air box 4. Air guide boxes 11 cover and are fixed to the upper strip-shaped openings 7 of the upper air box 4.

[0032] The lower hot air mechanism is fixedly installed at the bottom of the housing. Specifically, a strip 8 is set on the top surface of the bottom plate of the housing. A lower air box 9 is fixed above the strip 8. The width of the lower air box 9 is the same as that of the upper air box 4. The lower air box 9 is also a rectangular closed housing structure and corresponds to the length direction of the housing. The bottom surface of the lower air box 9 is fixed on the strip 8. Five lower strip-shaped openings 10 are provided on the top surface of the lower air box 9 along its length direction. The size of the lower strip-shaped openings 10 is the same as that of the upper strip-shaped openings 7. The lower strip-shaped openings 10 and the upper strip-shaped openings 7 are staggered. The lower strip-shaped openings 10 are centrally located between the two upper strip-shaped openings 7. The lower strip-shaped openings 10 are equidistant. An air guide box 11 is covered and fixed on the lower strip-shaped openings 10.

[0033] The upper air box 4 and the lower air box 9 are respectively provided with interfaces, and blowers are installed on the interfaces, or air sources are connected to the interfaces through pipes.

[0034] The lower air box 9 and the upper air box 4 are respectively equipped with thermal resistors, which achieve heating based on electrothermal energy, so that the blown air is hot air. Not limited to this example, if there is a heat source or boiler in the production process, a hot air source can also be directly connected through the interface to achieve the blowing of hot air.

[0035] The length of the air guide box 11 is adapted to or slightly larger than the length of the strip opening, and the width of the air guide box 11 is adapted to or slightly larger than the width of the strip opening. The bottom side of the air guide box 11 is provided with a lower box opening adapted to or slightly larger than the upper strip opening 7 / lower strip opening 10. The periphery of the lower box opening is provided with a rectangular frame structure edge plate 12. The edge plate 12 extends horizontally outward and is provided with multiple mounting holes. Screws are provided in the mounting holes. The screws are used to fix the edge plate 12 to the periphery of the upper strip opening 7 / lower strip opening 10, thereby fixing the air guide box 11 and covering the upper strip opening 7 / lower strip opening 10.

[0036] The air guide box 11 has end panels 13 at both ends, and an upper opening corresponding to its length at the top. A horizontal baffle 14 is provided at the upper opening, with its length direction corresponding to the length direction of the air guide box 11. The baffle 14 is centrally fixed at the opening, and its two ends are fixed to the top side of the end panel 13 on the same side. Folded plates 15 are integrally formed on both sides of the baffle 14 (based on a bending process). The baffle 14 is at a 135-degree angle to the baffle 15. Air guide plates 16 are provided on both sides of the upper box opening. The air guide plates 16 are parallel to the baffle 15. The distance between the lower inclined end face of the air guide plate 16 and the top end face of the baffle 15 is 0.8-3mm. This gap forms an air outlet channel 17, which sends hot air outward at a 45-degree angle, blowing it onto the sheet surface. This achieves a gentler contact at the inclined angle, and the inclined hot air is more easily diffused and flows along the sheet surface, avoiding direct blowing onto the sheet. Furthermore, the two air outlet channels 17 are symmetrically arranged, with relatively inclined air outlets, enabling drying in both directions.

[0037] Material guiding mechanisms are also installed at both ends of the air guide box 11 located in the upper air box 4. The length direction of the material guiding mechanism corresponds to the width direction of the upper air box 4. The material guiding mechanism includes strip plates 19 that are set at both ends and extend vertically. Vertically extending strip slots 20 are passed through the strip plates 19. Guide rollers are provided between the strip plates 19. Guide roller shafts 22 are rotatably connected to the guide rollers. The two ends of the guide roller shafts 22 pass through the strip slots 20 on the same side and are engaged with the slot openings. The outer end of the guide roller shafts 22 is provided with external threads. Locking caps 21 are threaded to both ends of the guide roller shafts 22. Rubber rings are provided on the inner end face of the strip plates 19 around the strip slots to increase the locking effect. The locking cap 21, by tightening, fixes the guide shaft to the strip plate 19 in an adjustable height, thereby providing height-adjustable guide rollers on both sides of the upper air guide box 11. This assists in the conveying of the sheet and positions the sheet. The sheet passes under the guide rollers and is tensioned by the guide rollers to be formed between the upper air box 4 and the lower air box 9. In this structure, the distance between the sheet and the 45-degree air outlet relative to the upper air box 4 is adjustable under the support of the guide rollers. Since the height of the upper air box 4 is adjustable, the distance between the sheet and the 45-degree air outlet of the lower air box 9 is also adjustable. Thus, the distance between the sheet and the air outlet can be freely and flexibly adjusted on both sides of the sheet. This adjustment is based on the process and feedback, ensuring that the gentleness of the airflow does not damage the curing effect. Furthermore, the 45-degree air outlet avoids direct blowing and damage to the coating, allowing the airflow to have good fluidity and diffusion on the sheet surface, resulting in a good dispersion and drying effect. The upper and lower air guide boxes 11 are arranged in an alternating pattern, allowing the airflow from above and below to be delivered alternately, resulting in a uniform airflow effect. Therefore, this equipment has a good drying effect on sheet surfaces, with gentle and uniform airflow, which is beneficial for film formation and curing.

[0038] The top side of the strip plate 19 is provided with a mounting plate 18 fixed thereto. The mounting plate 18 has a through-hole and a plurality of screws are provided in the through-hole. The mounting plate 18 is fixed to the side wall edge of the air guide box 11 of the upper air box 4 by the screws, thereby facilitating assembly.

[0039] Near the material inlet 32 ​​at both ends of the housing, there are also conveying rollers that can be rotatably installed with the housing. The two ends of the conveying rollers are rotatably installed with the side plates 1 of the housing through bearing components. The conveying rollers are driven by a motor fixed on the housing, thereby achieving the effect of actively pushing the sheet. The conveying rollers are located slightly above the material inlet. The sheet passes around the top circumference of the conveying roller and then passes around the bottom circumference of the guide roller, achieving a better tensioning effect.

[0040] Example 2:

[0041] Based on the housing, upper hot air mechanism, and lower hot air mechanism of Example 1, this example has a different design in terms of the material guiding mechanism. Due to the vertical space occupied by the vertical strip plate 19, this example adopts a different adjustable lifting structure, specifically:

[0042] The material guiding mechanism includes mounting plates 18 fixed to both ends of the side wall of the air guide box 11 of the upper air box 4. The outer end of the mounting plate 18 is provided with a swing frame 25 hinged to it. A smooth rod 24 is provided between the two swing frames 25. The smooth rod 24 is a clean stainless steel metal rod. The two ends of the smooth rod 24 are fixed to the bottom end of the swing frame 25. Based on the fact that the sheet is a smooth sheet, this design can reduce costs (no rotating structure, no bearings, simplified structure, simplified accessories). The sheet can be tightened by the clean metal surface of the smooth rod 24. The sheet is in contact with the bottom circumferential surface of the smooth rod 24.

[0043] An arc-shaped plate 26 is also fixed to the outer side of the mounting plate 18. An arc-shaped hole 27 is passed through the arc-shaped plate 26. The arc-shaped hole 27 is coaxially arranged with the swing axis of the swing rod. A threaded rod 28 is provided on the upper part of the swing rod, passing through the arc-shaped hole 27. The threaded rod 28 slides arc-shaped within the arc-shaped hole 27 based on the swing of the swing rod. A locking cap 21 is fitted on the threaded rod 28. By tightening the locking cap 21, the angle between the swing rod and the arc-shaped plate 26 can be fixed, thereby adjusting the height of the smooth rod 24.

[0044] Based on the above structure, the height of the light rod 24 can also be adjusted. The structure is simpler and has no excessive drooping components at both ends, which can reduce costs, facilitate adjustment, and achieve a larger adjustment range.

[0045] Example 3:

[0046] Based on the housing, upper hot air mechanism, and lower hot air mechanism of Example 1, this example adopts an adjustable structure for the conveyor rollers, specifically:

[0047] A portal frame 29 is provided at each of the two ends of the housing. Vertical sliding holes 31 are provided near the ends of the side plates 1. A conveying roller shaft 23 is provided at the bottom of the portal frame 29. The conveying roller shaft 23 is rotatably connected to the bottom of the portal frame 29 via bearing components. The conveying roller shaft 23 passes through the sliding holes 31 and slides vertically with the sliding holes 31. A conveying roller is provided on the conveying roller shaft 23 to support the bottom surface of the sheet material. Two vertically extending second screws 30 are provided at the two ends of the top plate 2 of the housing. Two second nuts are fitted on the second screws 30. Through holes are provided on the portal plates for the second screws 30 to pass through. The relative height between the portal frame 29 and the housing can be adjusted using the second screws 30 and the second nuts, thereby adjusting the relative height of the conveying rollers within the housing. This facilitates height adjustment based on the sheet material conveying conditions and the height of the guide rollers, improving the smooth and efficient guidance and conveying of the sheet material.

Claims

1. A closed-type box-type drying equipment, characterized in that, The device includes a closed housing. Inside the housing, from bottom to top, there are a lower hot air mechanism and an upper hot air mechanism. The lower hot air mechanism includes a lower air box fixed relative to the housing, and the top surface of the lower air box has multiple lower strip-shaped openings. The upper hot air mechanism includes an upper air box that is adjustable relative to the housing, and the bottom surface of the upper air box has multiple upper strip-shaped openings. The lower and upper strip-shaped openings are of corresponding sizes and are staggered. Air guide boxes are fixed to the lower and upper strip-shaped openings respectively. An air outlet channel is provided on the opposite side of the air guide box. The air outlet channel is inclined at 45 degrees relative to the horizontal plane. The two ends of the housing are respectively provided with motor-driven conveying rollers.

2. The enclosed box drying equipment according to claim 1, characterized in that, The lower and upper air boxes are respectively provided with interfaces, and a fan is installed on the interface or connected to an air source. The air source is a hot air source. Alternatively, a thermal resistor is installed inside the lower and upper air boxes.

3. The enclosed box-type drying equipment according to claim 1, characterized in that, The top of the box is provided with a top plate, the bottom of the box is provided with a bottom plate, and the sides of the box are provided with side plates. One end of the box is a feeding end plate, and the other end is a discharging end plate. The feeding end plate and the discharging end plate are respectively provided with a material passage extending horizontally along their width direction.

4. The enclosed box drying equipment according to claim 1, characterized in that, Multiple ear plates are fixed on both sides of the upper air box. A first screw is passed through the ear plate, and multiple first nuts are fitted on the first screw. The top end of the first screw is fixed to the top of the box body.

5. The enclosed box drying equipment according to claim 1, characterized in that, The bottom side of the air guide box is provided with a lower box opening that is adapted to or slightly larger than the upper / lower strip opening. The two ends of the air guide box are respectively provided with end panels. The top of the air guide box is provided with an upper box opening corresponding to its length. A horizontal baffle is provided at the upper box opening. The two ends of the baffle are respectively fixed to the top side of the end panel on the same side. The two sides of the baffle are respectively provided with integrally formed folding plates. The folding plates are at a 135-degree angle to the baffle. Air guide plates are provided on both sides of the upper box opening. The air guide plates are parallel to the folding plates. The gap between the air guide plates and the folding plates forms an air outlet channel.

6. The enclosed box drying equipment according to claim 5, characterized in that, The lower box opening has a rectangular frame structure edging plate on its periphery. The edging plate extends horizontally outward and has multiple mounting holes. Screws are installed in the mounting holes to fix the edging plate to the periphery of the upper / lower slot.

7. The enclosed box-type drying equipment according to claim 1, characterized in that, Material guiding mechanisms are installed on both sides of the air guide box of the upper hot air mechanism. The material guiding mechanism includes an installation plate fixedly installed to the side wall of the air guide box of the upper air box. A vertically extending strip plate is fixed on the installation plate. A vertically extending strip slot is passed through the strip plate. A guide roller is provided between the strip plates. A guide roller shaft is rotatably connected to the guide roller through the guide roller. Both ends of the guide roller shaft pass through the strip slot on the same side and slide up and down with it. Locking caps are threaded to both ends of the guide roller shaft.

8. The enclosed box drying equipment according to claim 1, characterized in that, Material guiding mechanisms are installed on both sides of the air guide box of the upper hot air mechanism. The material guiding mechanism includes an installation plate fixedly installed to the side wall of the air guide box of the upper air box. The outer end of the installation plate is provided with a swing frame that is hinged to it. A smooth rod is provided between the two swing frames. The smooth rod is a clean metal round rod. An arc plate is also fixed on the outer side of the installation plate. An arc hole is passed through the arc plate. The arc hole is coaxially arranged with the swing of the swing rod. The upper part of the swing rod is provided with a threaded rod that passes through the arc hole. A locking cap is fitted on the threaded rod.

9. The enclosed box drying equipment according to claim 3, characterized in that, Adjustable height portal frames are provided at both ends of the box body. Vertical sliding holes are provided near both ends of the side plates. Conveying roller shafts are provided at both ends of the conveying roller. The conveying roller shafts pass through the sliding holes and are slidably connected to the sliding holes. The two ends of the conveying roller are rotatably connected to the bottom of the portal frame.

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