CN118089365B - Drying conveyor for non-woven fabrics for reverse osmosis membrane and adjusting method thereof - Google Patents
Drying conveyor for non-woven fabrics for reverse osmosis membrane and adjusting method thereof Download PDFInfo
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- CN118089365B CN118089365B CN202410511748.1A CN202410511748A CN118089365B CN 118089365 B CN118089365 B CN 118089365B CN 202410511748 A CN202410511748 A CN 202410511748A CN 118089365 B CN118089365 B CN 118089365B
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- 238000001035 drying Methods 0.000 title claims abstract description 96
- 239000004745 nonwoven fabric Substances 0.000 title claims abstract description 84
- 239000012528 membrane Substances 0.000 title claims abstract description 26
- 238000001223 reverse osmosis Methods 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 13
- 230000007246 mechanism Effects 0.000 claims abstract description 43
- 238000012546 transfer Methods 0.000 claims abstract description 19
- 238000005452 bending Methods 0.000 claims abstract description 16
- 230000000903 blocking effect Effects 0.000 claims description 21
- 238000005192 partition Methods 0.000 claims description 20
- 238000010438 heat treatment Methods 0.000 claims description 13
- 230000001276 controlling effect Effects 0.000 claims 1
- 230000001105 regulatory effect Effects 0.000 claims 1
- 230000014759 maintenance of location Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 11
- 239000000835 fiber Substances 0.000 description 8
- 238000009423 ventilation Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000009467 reduction Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000008602 contraction Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000012943 hotmelt Substances 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 238000010345 tape casting Methods 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920002492 poly(sulfone) Polymers 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B13/00—Machines and apparatus for drying fabrics, fibres, yarns, or other materials in long lengths, with progressive movement
- F26B13/10—Arrangements for feeding, heating or supporting materials; Controlling movement, tension or position of materials
- F26B13/14—Rollers, drums, cylinders; Arrangement of drives, supports, bearings, cleaning
- F26B13/18—Rollers, drums, cylinders; Arrangement of drives, supports, bearings, cleaning heated or cooled, e.g. from inside, the material being dried on the outside surface by conduction
- F26B13/183—Arrangements for heating, cooling, condensate removal
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/001—Drying-air generating units, e.g. movable, independent of drying enclosure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/004—Nozzle assemblies; Air knives; Air distributors; Blow boxes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/06—Controlling, e.g. regulating, parameters of gas supply
- F26B21/10—Temperature; Pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/02—Applications of driving mechanisms, not covered by another subclass
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/20—Rollers
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention discloses a non-woven fabric drying conveyor for a reverse osmosis membrane and an adjusting method thereof, and the non-woven fabric drying conveyor comprises a conveyor frame, a conveying mechanism and a drying mechanism, wherein a drying chamber is arranged in the conveyor frame, the conveying mechanism penetrates through the drying chamber, the drying mechanism is arranged above the conveyor frame, the conveying mechanism consists of a support frame and a conveying roller device arranged on the support frame, the conveying roller device comprises a plurality of linear conveying rollers and curved conveying rollers which are sequentially arranged, the height of each linear conveying roller is lower than the heights of two ends of each curved conveying roller, the linear conveying rollers drive the non-woven fabric to move, and the curved conveying rollers drive two sides of the non-woven fabric to bend to form a bending part. The invention can increase heat transfer efficiency and reduce moisture retention time by arranging the curved conveying roller, thereby reducing the length dimension of the drying conveyor.
Description
Technical Field
The invention belongs to the technical field of non-woven fabrics manufactured by wet process, and particularly relates to a drying conveyor of non-woven fabrics for reverse osmosis membranes and an adjusting method thereof.
Background
The reverse osmosis membrane is generally prepared by dissolving polysulfone in an organic solution to prepare a permeable membrane solution, and coating the permeable membrane solution on a non-woven fabric single-surface layer by tape casting through a tape casting machine, thereby preparing the high-strength reverse osmosis membrane. The non-woven fabric as the reverse osmosis membrane base material has the requirements of excellent uniformity of fiber net forming distribution, good micropore structure, higher tensile strength, small heat shrinkage, proper ventilation, surface non-fuzzing, small deformation, consistent thickness and the like.
Chinese patent application number 2015105491377 discloses a wet substrate nonwoven fabric for reverse osmosis membrane and a method for preparing the same. The patent uses main fibers of PET materials and hot melt bonding fibers of a sheath-core structure as raw material fibers, adopts a wet non-woven fabric process, and prepares the wet non-woven fabric for water treatment of a reverse osmosis membrane support substrate by performing fiber dispersion, inclined wire papermaking forming, drying by a drying conveyor and hot melt rolling outside an off-line machine to form a whole.
The above patent proposal has the advantages of good quality of finished products and low process cost, but when the products are dried and conveyed, the temperature of the two side areas of the non-woven fabric base material is lower than that of the middle area because hot air flows are blown downwards from the upper part of the middle of the drying conveyor, and the drying effect is poorer than that of the middle part. In order to ensure the drying effect, the length of the drying conveyor is often up to 21 meters, and the drying conveyor occupies a large space, so that the subsequent maintenance cost is increased.
Disclosure of Invention
In order to solve the problems, the invention provides a non-woven fabric drying conveyor for a reverse osmosis membrane, which comprises a conveyor frame, a conveying mechanism and a drying mechanism, wherein a drying chamber is arranged in the conveyor frame, the conveying mechanism penetrates through the drying chamber, the drying mechanism is arranged above the conveyor frame, the conveying mechanism consists of a support frame and a conveying roller device arranged on the support frame, the conveying roller device comprises a plurality of linear conveying rollers and curved conveying rollers which are sequentially arranged, the height of each linear conveying roller is lower than the heights of two ends of each curved conveying roller, the linear conveying rollers drive the non-woven fabric to move, and the curved conveying rollers drive two sides of the non-woven fabric to bend to form a bending part.
Preferably, the curved conveying roller comprises a middle roller and a first side roller and a second side roller which are positioned on two sides of the middle roller and are obliquely arranged, wherein a first connecting frame and a second connecting frame are arranged on two sides of the middle roller, a first supporting plate and a second supporting plate are respectively arranged on the side edges of the first side roller and the second side roller, one faces of the first connecting frame and the second connecting frame, which are opposite to the middle roller, are vertical faces, one faces of the first connecting frame and the second connecting frame, which are opposite to the middle roller, are inclined faces, two sides of the middle roller are respectively connected with the vertical faces of the first connecting frame and the second connecting frame in a rotating mode, one end of the first side roller is connected with the inclined faces of the first connecting frame in a rotating mode, the other end of the first side roller is connected with the first supporting plate in a rotating mode, one end of the second side roller is connected with the inclined faces of the second connecting frame in a rotating mode, and the other end of the second side roller is connected with the second supporting plate in a rotating mode.
Preferably, the curved conveying roller comprises a middle roller, a first side roller and a second side roller, wherein the first side roller and the second side roller are positioned on two sides of the middle roller and are obliquely arranged, the side edges of the first side roller and the second side roller are respectively provided with a bending angle adjusting mechanism, two sides of the middle roller are respectively provided with a first supporting part and a second supporting part, the middle roller is rotationally arranged between the first supporting parts and the second supporting parts, one sides of the first supporting parts and the second supporting parts, deviating from the middle roller, are respectively hinged with a first concave frame and a second concave frame, the first concave frame is rotationally provided with a first side roller, the second concave frame is rotationally provided with a second side roller, the bending angle adjusting mechanism comprises a first adjusting column connected with the first concave frame and a second adjusting column connected with the second concave frame, the middle of the first adjusting column and the second adjusting column is respectively provided with an adjusting groove, the adjusting groove is provided with a locking bolt, the bending angle adjusting mechanism further comprises a first arc-shaped side edge fixed on the first side roller and a second arc-shaped plate fixed on the second side edge of the second side roller, and a second arc-shaped plate is fixedly arranged on the first arc-shaped plate and the second arc-shaped plate.
Preferably, the drying mechanism comprises a heat flow pipe positioned above the conveyor frame, a plurality of branch pipes are connected below the heat flow pipe, expansion pipes are connected below the branch pipes, a partition plate is connected on the inner side above the conveyor frame, an airflow chamber is formed between the upper side of the partition plate and the top of the conveyor frame, a flow equalizing area is arranged on the partition plate, and evenly arranged flow distributing holes are arranged on the flow equalizing area.
Preferably, the two sides of the flow equalizing area are provided with sliding rails in a downward extending mode, the two sides of the flow equalizing area are respectively provided with a first flow blocking plate and a second flow blocking plate in a sliding mode, the top surfaces of the first flow blocking plates and the second flow blocking plates are arranged in a pasting mode with the surfaces of the flow equalizing area, flow blocking holes matched with the flow dividing holes in size are formed in the surfaces of the first flow blocking plates and the second flow blocking plates, a driving box is arranged on the side edge of the conveyor frame, a first driving telescopic motor and a second driving telescopic motor are arranged in the driving box, the first driving telescopic motor is connected with the end portion of the first flow blocking plates, the second driving telescopic motor is connected with the end portion of the second flow blocking plates, and temperature sensors are arranged on the side edges of the middle roller, the first side roller and the second side roller.
Preferably, wind speed limiting mechanisms are arranged on the first spoiler and the second spoiler respectively, the wind speed limiting mechanisms comprise a first sliding rod and a second sliding rod which are fixed on two sides and are arranged in parallel, a speed reducing net is arranged between the first sliding rod and the second sliding rod in a sliding mode, the tops of two sides of the speed reducing net are respectively fixed with the tops of the first sliding rod and the second sliding rod, magnetic pieces are arranged at the bottoms of two sides of the speed reducing net, a first electromagnet and a second electromagnet are respectively arranged at two ends of the first sliding rod and two ends of the second sliding rod, and a current controller is respectively connected with the first electromagnet and the second electromagnet at two ends of the first sliding rod and the second sliding rod.
Preferably, the two sides of the curved conveying roller are respectively provided with a first guide plate and a second guide plate, the first guide plates and the second guide plates are respectively provided with outflow holes, and the upper parts of the opposite surfaces of the first guide plates and the second guide plates are respectively extended to the middle to form round corner parts.
Preferably, the drying chamber comprises a first drying chamber and a second drying chamber, a large air volume area is arranged on the partition plate corresponding to the first drying chamber, a large-diameter air outlet is arranged on the large air volume area, and the upper part of the second drying chamber corresponds to the flow equalizing area of the partition plate.
Preferably, the two sides of the linear conveying roller are provided with supporting seats, a rotating motor is arranged in the supporting seats, the output end of the rotating motor is connected with the end part of the linear conveying roller, a heating cavity is arranged in the linear conveying roller, a heating resistance wire is arranged in the heating cavity, and a plurality of strip round parts are arranged on the surface of the linear conveying roller.
The method for adjusting the drying conveyor of the non-woven fabric for the reverse osmosis membrane is characterized by comprising the following steps of: comprises the following steps of;
S1, collecting values of three temperature sensors on the side edges of any middle roller and the corresponding first side roller and second side roller in a second drying chamber;
S2, calculating an average value according to the numerical values of the three temperature sensors, making a difference between the numerical values of the temperature sensors on the side edges of the first side roller and the second side roller and the average value, comparing the corresponding difference value with a temperature threshold value, and if the difference value is larger than the temperature threshold value, moving a corresponding spoiler above the corresponding side roller, and executing a step S3; if the difference is smaller than the temperature threshold, re-executing the step S1;
S3, calculating the moving distance of the corresponding spoiler, comparing the value of the moving distance with a distance threshold value, and controlling the speed reduction network to cover the flow blocking holes on the corresponding spoiler if the difference value is larger than the threshold value; if the difference is less than the threshold, the adjustment is completed.
The invention has the advantages that:
1. The conveying device in the scheme is provided with the curved conveying roller, two sides of the wet non-woven fabric for the non-woven fabric can be driven to bend upwards during conveying, when hot air flow at the top is blown downwards from the top, the hot air flow can move towards two sides after contacting with the middle area of the non-woven fabric for the reverse osmosis membrane, wind power vortex can be generated under the structural effect of bending at two sides, and the vortex effect not only enables the hot air flow to contact and transfer heat to the surface of the non-woven fabric more effectively, so that the heat transfer efficiency is improved. The vortex effect can reduce the residence time of the moisture on the surface of the non-woven fabric on the surface of the film to a certain extent, so that the moisture is promoted to be taken away more rapidly, the drying process is accelerated, and the effect of reducing the length of the drying conveyor is achieved.
2. The top of drying chamber is equipped with the baffle in this scheme, is provided with the district that flow equalizes on the baffle, is equipped with the branch flow hole of evenly setting on the district that flow equalizes, and the branch flow hole can make the hot gas flow of top can be mild even inflow to the drying chamber of below. The uniformity of the flow velocity of the hot air flow is improved, and the stability of the hot air flow flowing into the drying chamber is ensured.
3. In this scheme, be equipped with the spoiler on the both sides in the regional district that flow equalizes, through removing the spoiler, can make the flow choking hole on the spoiler produce the dislocation with the reposition of redundant personnel hole on the baffle to reduce the hot air flow, reduce the heat that receives on non-woven fabrics both sides, avoid the crooked partial high temperature in non-woven fabrics both sides to cause the inhomogeneous that is heated.
4. In this scheme be provided with the speed reduction net on the spoiler, after the velocity of flow of the hot air flow of the flow choking hole on the spoiler leads to the velocity of flow to increase because of the flow choking hole dislocation, can cross the speed reduction net and reduce the wind speed, avoid the fibre on non-woven fabrics surface to receive great impact, cause fibrous displacement, tensile, damage or interweave bad condition.
5. The flow guide plate is further arranged in the scheme, so that the wind vortex can be further promoted, and the flow guide plate is further provided with the flow outlet holes, so that the moisture is conveniently discharged along with partial hot air flow.
6. The scheme also provides a method for adjusting the drying conveyor of the non-woven fabric for the reverse osmosis membrane, which can automatically control the movement of the spoiler and promote the degree of automation by collecting the temperature values of different positions.
Drawings
Fig. 1 is a structural view of a conveying mechanism of the present invention.
Fig. 2 is a schematic diagram of the overall structure of the present invention.
Fig. 3 is a side view of a curved transfer roll of the present invention.
FIG. 4 is a diagram of the structure of the conveying mechanism with the added deflector.
Fig. 5 is a side view of the conveyor of the present invention with the addition of baffles.
Fig. 6 is a block diagram of a separator and top of the present invention.
FIG. 7 is a block diagram of the addition of spoilers to the baffle plate of the present invention.
FIG. 8 is a side view of the addition of a spoiler to a baffle plate of the present invention.
FIG. 9 is a block diagram of a wind speed limiting mechanism according to the present invention.
Fig. 10 is a view showing the structure of the linear transfer roller of the present invention.
Fig. 11 is a structural view of another conveying mechanism of the present invention.
Fig. 12 is a side view of another curved transfer roll of the present invention.
In the figure: 1 conveyor frame, 2 support frame, 3 straight conveyor roller, 4 curved conveyor roller, 5 bend, 6 intermediate roller, 7 first side roller, 8 second side roller, 9 first link, 10 second link, 11 first support plate, 12 second support plate, 13 first support, 14 second support, 15 first concave support, 16 second concave support, 17 first adjustment column, 18 second adjustment column, 19 adjustment slot, 20 lock bolt, 21 first arc plate, 22 second arc plate, 23 adjustment hole, 24 thermal tube, 25 branch tube, 26 expansion tube, 27 baffle, 28 airflow chamber, 29 flow equalizing area 30 flow dividing holes, 31 sliding rails, 32 first flow blocking plates, 33 second flow blocking plates, 34 flow blocking holes, 35 driving boxes, 36 first driving telescopic motors, 37 second driving telescopic motors, 38 temperature sensors, 39 first sliding rods, 40 second sliding rods, 41 speed reducing nets, 42 magnetic pieces, 43 first electromagnets, 44 second electromagnets, 45 first flow guiding plates, 46 second flow guiding plates, 47 flow outlet holes, 48 round corner parts, 49 first drying chambers, 50 second drying chambers, 51 large air volume areas, 52 large-diameter air outlets, 53 supporting seats, 54 heating cavities, 55 heating resistance wires and 56 stripe round parts.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
Embodiment 1, as shown in fig. 1-2, a non-woven fabric drying conveyor for a reverse osmosis membrane comprises a conveyor frame 1, a conveying mechanism and a drying mechanism, wherein a drying chamber is arranged inside the conveyor frame 1, the conveying mechanism penetrates through the drying chamber, the drying mechanism is arranged above the conveyor frame 1, the conveying mechanism sends the non-woven fabric into the drying chamber, and the drying mechanism sends hot air flow from the top to dry the non-woven fabric. An air outlet is arranged on the surface of the conveyor frame 1 and is used for assisting the hot air flow to be discharged.
With reference to fig. 2, the conveying mechanism is composed of a supporting frame 2 and a conveying roller device arranged on the supporting frame 2, wherein the conveying roller device comprises a plurality of linear conveying rollers 3 and curved conveying rollers 4 which are sequentially arranged, and the linear conveying rollers 3 and the curved conveying rollers 4 are sequentially arranged. The two sides of the linear conveying roller 3 are provided with supporting seats 53, a rotating motor (not shown in the figure) is arranged in the supporting seats 53, the output end of the rotating motor is connected with the end part of the linear conveying roller 3, and the linear conveying roller 3 is driven to rotate by the rotating motor, so that the non-woven fabrics above the rotating motor are driven to move. The curved conveying roller 4 includes a middle roller 6, and first and second side rollers 7 and 8 disposed at both sides of the middle roller 6 and inclined, and the first and second side rollers 7 and 8 are symmetrically disposed. The intermediate roll 6 forms a curved concave structure with the first side roll 7 and the second side roll 8 on both sides. The middle roller 6 is flush with the linear transfer roller 3, and when the non-woven fabric passes through the curved transfer roller 4, both sides of the surface of the non-woven fabric are curved along with the first side roller 7 and the second side roller 8. The angle between the first side roller 7 and the second side roller 8 and the horizontal line is in the range of 45-65 °, if the angle is less than 45 °, it is difficult to generate wind vortex on both sides, and if the angle is more than 65 °, it is easy to cause damage to the nonwoven fabric. The angle between the first side roller 7 and the second side roller 8 and the horizontal line in this embodiment is 55 °. Referring to fig. 10, in this embodiment, a heating chamber 54 is provided in the linear conveying roller 3, and a heating resistance wire 55 is provided in the heating chamber 54, where the heating resistance wire 55 can heat the bottom of the nonwoven fabric by the linear conveying roller 3, so as to increase the drying rate. The surface of the linear conveying roller 3 is provided with a plurality of strip round parts 56, and the friction force between the linear conveying roller 3 and the surface of the non-woven fabric can be increased through the strip round parts 56, so that slipping is prevented.
With reference to fig. 2-3, the two sides of the intermediate roller 6 are provided with a first connecting frame 9 and a second connecting frame 10, the sides of the first side roller 7 and the second side roller 8 are respectively provided with a first supporting plate 11 and a second supporting plate 12, one surfaces of the first connecting frame 9 and the second connecting frame 10, which are opposite to the intermediate roller 6, are vertical surfaces, one surfaces of the first connecting frame 9 and the second connecting frame 10, which are opposite to the intermediate roller 6, are inclined surfaces, the two sides of the intermediate roller 6 are respectively connected with the vertical surfaces of the first connecting frame 9 and the second connecting frame 10 in a rotating manner, one end of the first side roller 7 is connected with the inclined surfaces of the first connecting frame 9 in a rotating manner, the other end of the first side roller 7 is connected with the first supporting plate 11 in a rotating manner, one end of the second side roller 8 is connected with the inclined surfaces of the second connecting frame 10 in a rotating manner, and the other end of the second side roller 8 is connected with the second supporting plate 12 in a rotating manner. As shown in fig. 3, when the hot air flows from the top to the surface of the non-woven fabric, the hot air flows diffuse from the middle to two sides of the non-woven fabric, and move upwards under the action of the bent angle structures at two sides of the non-woven fabric, and part of the hot air flows continuously move downwards again under the pushing of the new hot air flows, so that a wind vortex is formed at two sides of the non-woven fabric, and the hot air flows can blow to the bent parts 5 at two sides of the non-woven fabric for many times by the wind vortex, so that the temperature of the bent parts at two sides of the non-woven fabric can be increased, and the integral drying effect of the non-woven fabric is improved. The swirl effect not only allows the hot air stream to more effectively contact and transfer heat to the nonwoven fabric surface, thereby improving heat transfer efficiency. The vortex effect can reduce the residence time of the surface of the non-woven fabric on the surface of the film to a certain extent, so that moisture is promoted to be taken away more rapidly, the drying process is accelerated, and the effect of reducing the length of the drying conveyor is achieved. In the embodiment, the length of the drying conveyor is 15 meters, so that the length and the size are reduced compared with the traditional drying conveyor, and the installation space is saved.
Referring to fig. 4-5, the two sides of the curved conveying roller 4 are respectively provided with a first baffle 45 and a second baffle 46, the first baffle 45 and the second baffle 46 are respectively provided with a discharge hole 47, the upper parts of the opposite sides of the first baffle 45 and the second baffle 46 are respectively extended to the middle to form a round corner 48, the first baffle 45 is arranged on the first supporting plate 11 at the left side of the curved conveying rollers 4, the second baffle 46 is arranged on the second supporting plate 12 at the right side of the curved conveying rollers 4, the round corner 48 is a part of the two baffles extending to the middle, the higher the height is, the longer the length of the whole round corner 48 extending to the middle is, the edge line of the whole round corner 48 close to the middle is round corner, and when hot air flows blow to the non-woven fabrics from the top and spread from the two sides, the baffle and the round corner 48 are more helpful to promote the formation of wind vortex. The first flow guide plate 45 and the second flow guide plate 46 are respectively provided with an outflow hole 47, the outflow holes 47 can be in any shape such as a round shape, a square shape or a triangle shape, and the like, in this embodiment, an ellipse shape is selected, and the purpose of the outflow holes 47 is to facilitate the discharge of part of the moisture of the non-woven fabric along two sides.
Embodiment 2, in combination with fig. 2, the drying mechanism in this embodiment has the same parts as those in embodiment 1, and includes a heat flow pipe 24 located above the conveyor frame 1, a plurality of branch pipes 25 are connected below the heat flow pipe 24, an expansion pipe 26 is connected below the branch pipes 25, the expansion pipe 26 is in a horn shape, and the horn-shaped expansion pipe 26 can help to uniformly distribute heat so as to promote the flow of hot air to a lower area more uniformly, and prevent the heat from being concentrated in a certain part in the conveying process. And the horn-like design helps to reduce turbulence and thus resistance to airflow. The reduction of the resistance can reduce the energy consumption and improve the conveying efficiency.
Referring to fig. 2 and 6, a partition plate 27 is connected to the inner side of the upper part of the conveyor frame 1, an airflow chamber 28 is formed between the upper part of the partition plate 27 and the top of the conveyor frame 1, a large air volume area 51 and a flow equalizing area 29 are arranged on the partition plate 27, a drying chamber in the conveyor frame 1 comprises a first drying chamber 49 and a second drying chamber 50, the first drying chamber 49 is positioned at the front end of a drying conveying pipeline, and the temperature in the first drying chamber 49 is greater than that in the second drying chamber 50. Because the humidity of the initial state of the non-woven fabric on entering the drying assembly line is relatively high, and even if the drying temperature is higher at this time, the non-woven fabric is not damaged, so that the non-woven fabric can be quickly dried and dehumidified by the higher temperature, and after entering the second drying chamber 50, the humidity on the non-woven fabric is low, so that the drying temperature needs to be reduced, and the damage to the surface of the non-woven fabric caused by the high temperature is avoided. The partition plate 27 is provided with a large air volume area 51 corresponding to the first drying chamber 49, the large air volume area 51 is provided with a large-diameter air outlet 52, and the lower part of the large-diameter air outlet 52 is opposite to the first drying chamber 49. The flow equalizing area 29 of the partition plate 27 is provided with a plurality of uniformly arranged flow dividing holes 30, and the flow dividing holes 30 can enable the hot air in the upper air flow chamber 28 to flow into the lower second drying chamber 50 more smoothly and uniformly. The length of the diversion area on the partition plate 27 is far greater than that of the large air volume area 51, the length of the corresponding second drying chamber 50 is also far greater than that of the first drying chamber 49, and the diameter of the diversion hole 30 is small, so that the flow rate of hot air flow is reduced, and the temperature in the second drying chamber 50 is lower than that of the first drying chamber 49, and the damage to non-woven fabrics caused by overhigh temperature is avoided.
Referring to fig. 7-8, the two sides of the flow equalizing area 29 extend downwards to form a sliding rail 31, the sliding rails 31 on the two sides are respectively provided with a first spoiler 32 and a second spoiler 33 in a sliding manner, and the cross section of the sliding rail 31 is of a cross-shaped structure, so that the sliding of the two spoilers is more stable. The top surfaces of the first spoiler 32 and the second spoiler 33 are arranged in a manner of being attached to the surface of the flow equalizing area 29, flow equalizing holes 34 matched with the flow equalizing holes 30 in size are formed in the surfaces of the first spoiler 32 and the second spoiler 33, a driving box 35 is arranged on the side edge of the conveyor frame 1, a first driving telescopic motor 36 and a second driving telescopic motor 37 are arranged in the driving box 35, the first driving telescopic motor 36 is connected with the end part of the first spoiler 32, and the second driving telescopic motor 37 is connected with the end part of the second spoiler 33. The purpose of the spoiler is to reduce the temperature of the two sides of the non-woven fabric. From the width direction of the partition plate 27, four rows of flow dividing holes 30 are uniformly formed in the flow sharing area 29, and the flow dividing holes 34 on the first flow dividing plate 32 and the second flow dividing plate 33 correspond to the two rows of flow dividing holes 30 on the edge of the flow sharing area 29, when the first flow dividing plate 32 or the second flow dividing plate 33 moves, the flow dividing holes 34 on the two flow dividing plates are staggered with the flow dividing holes 30 on the flow sharing area 29, the flow dividing holes 34 and the flow dividing holes 30 are not coaxial, and at the moment, the ventilation diameter of the flow dividing holes 34 is reduced, so that the downward air output of hot air flow is reduced. The hot air streams blown out from the two rows of the split holes 30 and the choke holes 34 at the original edges are near the bent portions at the two sides of the nonwoven fabric, so that the heat quantity of the regions at the bent portions at the two sides of the nonwoven fabric is reduced. The purpose of setting so is because the both sides of non-woven fabrics can be close the steam outflow wind part of top more after upwards bending, and along with the production of wind-force vortex, the heat in the both sides upwards bending part region of non-woven fabrics can be higher and higher, and the both sides of stoving non-woven fabrics can be accelerated to higher heat, but also can cause the damage to the both sides of non-woven fabrics if the temperature is too high, consequently set up the spoiler and can suitably reduce the temperature on both sides. The side edges of the middle roller 6, the first side roller 7 and the second side roller 8 are respectively provided with a temperature sensor 38, so that the temperature of a corresponding area can be monitored, an operator can be reminded of adjusting the spoilers, the two spoilers can move along the length direction of the partition plate 27 or the width direction of the partition plate 27, and in the embodiment, the two spoilers are driven by two driving telescopic motors to move along the length direction of the partition plate 27.
Referring to fig. 9, wind speed limiting mechanisms are respectively arranged on the first spoiler 32 and the second spoiler 33, each wind speed limiting mechanism comprises a first sliding rod 39 and a second sliding rod 40 which are fixed on two sides and are arranged in parallel, two ends of each first sliding rod 39 and each second sliding rod 40 are supported by corresponding fixing seats, a speed reducing net 41 is slidably arranged between each first sliding rod 39 and each second sliding rod 40, two sides of the speed reducing net 41 are slidably arranged on each first sliding rod 39 and each second sliding rod 40 through a plurality of pull rings, and tops of two sides of the speed reducing net 41 are respectively fixed with tops of each first sliding rod 39 and each second sliding rod 40, and two sides of the speed reducing net 41 can freely stretch out and draw back. The deceleration net 41 is in a contracted state, and after the deceleration net 41 is unfolded, the corresponding flow blocking holes 34 on the flow blocking plates are covered, so that the expansion and contraction of the deceleration net 41 are similar to the expansion and contraction of the curtain. The bottom of two sides of the speed reducing net 41 is provided with a magnetic part 42, two ends of the first slide bar 39 and the second slide bar 40 are respectively provided with a first electromagnet 43 and a second electromagnet 44, the first electromagnet 43 and the second electromagnet 44 can be arranged on the fixed seat, the first electromagnet 43 and the second electromagnet 44 at two ends of the first slide bar 39 and the second slide bar 40 are connected with a current controller (not shown in the figure), the current direction of the first electromagnet 43 is opposite to the current direction of the second electromagnet 44, when the first electromagnet 43 and the second electromagnet 44 are electrified, the first electromagnet 43 generates electromagnetic attraction force on the magnetic part 42, and the second electromagnet 44 generates electromagnetic repulsion force on the magnetic part 42, so the speed reducing net 41 is in a contracted state. When the deceleration net 41 needs to be unfolded, the current directions of the two electromagnets are changed simultaneously through the current controller, at this time, the first electromagnet 43 generates electromagnetic repulsive force to the magnetic member 42, the second electromagnet 44 generates electromagnetic attractive force to the magnetic member 42, and the deceleration net 41 is in an unfolded state. The purpose of the speed reduction net 41 is that when the spoiler moves, the ventilation diameter of the spoiler hole 34 becomes smaller, the air outlet speed is increased while the downward air outlet amount of the hot air flow is reduced, and the high-speed hot air flow may cause the fibers on the surface of the nonwoven fabric to be impacted greatly, which may cause displacement, stretching, damage or poor interweaving of the fibers. This may lead to uneven surface quality, and problems such as fuzzing, pilling, etc. occur. And the ventilation position of the choke hole 34 is blocked by the speed reducing net 41, so that the resistance of the air flow is increased, and the wind pressure and the wind speed are reduced.
Embodiment 3 is a method for adjusting a drying conveyor for a nonwoven fabric for a reverse osmosis membrane according to embodiment 2, comprising the steps of;
S1, collecting values of three temperature sensors 38 at the side edges of a first side roller 7 and a second side roller 8 at two sides of any middle roller 6 in a second drying chamber 50; the three temperature sensors 38 may be located near the middle and two side regions of the nonwoven fabric. After the nonwoven fabric enters the conveyor frame 1 to start drying, the values of the three temperature sensors 38 are collected in real time. And monitoring the temperature states of the middle and two sides of the non-woven fabric in real time. The present embodiment collects only the temperature parameter in the second drying chamber 50.
S2, calculating an average value according to the numerical values of the three temperature sensors 38, making a difference between the numerical values of the temperature sensors 38 on the side edges of the first side roller 7 and the second side roller 8 and the average value, comparing the corresponding difference value with a temperature threshold value, if the difference value is smaller than the temperature threshold value, the temperature threshold value is 3 ℃, the difference between the temperature of the middle area and the temperature of the two side areas of the non-woven fabric is smaller, no obvious abnormality exists, and executing the step S1 again;
If the difference is larger than the temperature threshold, the temperature of the two sides of the non-woven fabric is higher, the difference between the temperature of the middle area and the temperature of the two sides of the non-woven fabric is larger, the non-woven fabric is heated unevenly, and then the corresponding flow blocking plates above the corresponding side rollers are moved, so that the temperature of the two sides of the non-woven fabric is reduced, and the step S3 is executed;
S3, calculating the moving distance of the corresponding spoiler, and comparing the moving distance value with a distance threshold value which is 0.5cm. If the difference is greater than the threshold value, the moving distance of the corresponding flow blocking plate is larger, the ventilation aperture of the flow blocking hole 34 is smaller, the flow speed of the hot air flow is obviously accelerated, and the speed reducing net 41 is controlled to cover the flow blocking hole 34 on the corresponding flow blocking plate; if the difference is less than the threshold, it is indicated that the ventilation aperture of the baffle orifice 34 is not changed much, the velocity of the hot gas stream will not accelerate significantly, and the deceleration net 41 need not be covered.
The embodiment can automatically control the movement of the spoiler by collecting temperature values at different positions, thereby improving the degree of automation. By comparing the temperature value corresponding to any side roller with the average value of the temperatures acquired by the three temperature sensors 38 at the same time, the heating uniformity of the surface of the non-woven fabric can be more accurately reflected, and false alarm can be avoided. If only the temperature value of the side roller region is compared with the temperature value of the middle roller 6 region, it is possible that the temperature of the entire second drying chamber 50 is raised, but both sides are raised more quickly, and the difference between the temperature value of the side roller region and the temperature value of the middle roller 6 region exceeds the threshold value at this time, because of the error of the short-time numerical variation, thereby causing a false alarm. Therefore, the monitoring and moving can be more accurate by adopting the scheme. If the temperature of the side roller areas on both sides collected in the step S1 is greater than a dangerous threshold, the dangerous threshold is the maximum temperature that the nonwoven fabric can bear during drying, and the corresponding spoilers above the corresponding side rollers are also moved, so that the temperature of the areas on both sides of the nonwoven fabric is reduced, and the step S3 is executed.
In the embodiment 4, referring to fig. 11-12, the embodiment discloses a curved conveying roller 4 with another structure, in this embodiment, the curved conveying roller 4 includes a middle roller 6, a first side roller 7 and a second side roller 8 which are located at two sides of the middle roller 6 and are obliquely arranged, and a bending angle adjusting mechanism, two sides of the middle roller 6 are provided with a first supporting part 13 and a second supporting part 14, the middle roller 6 is rotationally arranged between the first supporting part 13 and the second supporting part 14, one sides of the first supporting part 13 and the second supporting part 14, which are away from the middle roller 6, are respectively hinged with a first concave frame 15 and a second concave frame 16, a first side roller 7 is rotationally arranged on the first concave frame 15, a second side roller 8 is rotationally arranged on the second concave frame 16, the bending angle adjusting mechanism includes a first adjusting column 17 connected with the first concave frame 15 and a second adjusting column 18 connected with the second concave frame 16, the middle of the first adjusting column 17 and the second adjusting column 18 is provided with an adjusting groove 19, a locking bolt 20 is arranged on the adjusting groove 19, the bending angle adjusting mechanism also includes a first side roller 7 and a second side roller 21 fixed on the first side 21 and a second side of the second curved plate 22, and a first side of the second side 21 is provided with an arc plate 22. The dimensions of the adjustment slots 19 are larger than the dimensions of the corresponding arcuate plates, and two arcuate plates are provided through the adjustment slots 19 in the middle of the first and second adjustment posts 17, 18, respectively.
By rotating the first adjusting column 17 and the second adjusting column 18, the angle of the first side roller 7 and the second side roller 8 can be changed, and then the angle adjustment of the first side roller 7 and the second side roller 8 can be facilitated by locking the locking bolt 20. The bending state of the non-woven fabrics can be controlled more flexibly by adjusting the bending angle of the driving roller, so that the contact between hot air flow and the surface of the reverse osmosis membrane is optimized, the drying effect is improved, and the non-woven fabrics with different sizes and materials can be better adapted.
While embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a drying conveyor of non-woven fabrics for reverse osmosis membrane which characterized in that: including conveyer frame (1), conveying mechanism and drying mechanism, the inside drying chamber that is equipped with of conveyer frame (1), conveying mechanism runs through the drying chamber setting, drying mechanism locates the top at conveyer frame (1), drying mechanism is including heat flow pipe (24) that are located conveyer frame (1) top, the below of heat flow pipe (24) is connected with a plurality of branch pipes (25), the below of branch pipe (25) is connected with expansion pipe (26), conveying mechanism comprises support frame (2) and the transfer roller device of locating on support frame (2), the transfer roller device includes a plurality of sharp shape transfer roller (3) and the crooked transfer roller (4) that set gradually, the height of sharp shape transfer roller (3) is less than the height at crooked transfer roller (4) both ends, sharp shape transfer roller (3) drive and remove, crooked transfer roller (4) drive non-woven fabrics both sides bend forming bending part (5), crooked transfer roller (4) include intermediate roll (6), be located intermediate roll (6) and the second side (7) and second side (8) that are equipped with the second side (7) and the first side of intermediate roll (8) and second side (8) and the first side (8) of the side regulating roll that are equipped with the angle of both sides (8), the middle roller (6) rotates to be located between first supporting part (13) and second supporting part (14), the one side that first supporting part (13) and second supporting part (14) deviate from middle roller (6) articulates respectively has first spill frame (15) and second spill frame (16), it is equipped with first side roller (7) to rotate on first spill frame (15), the rotation of second spill frame (16) is equipped with second side roller (8), bending angle adjustment mechanism includes first adjusting column (17) and second adjusting column (18) of being connected with first spill frame (15) and with second spill frame (16), the centre of first adjusting column (17) and second adjusting column (18) all is equipped with adjustment tank (19), be equipped with locking bolt (20) on adjustment tank (19), bending angle adjustment mechanism still is equipped with arc (21) and second arc (22) that are fixed in second side roller (8) side, first arc (21) and second arc (23) are equipped with on arc.
2. The drying conveyor for a nonwoven fabric for a reverse osmosis membrane according to claim 1, wherein: the novel flow equalizing device is characterized in that a partition plate (27) is connected to the inner side of the upper part of the conveyor frame (1), an airflow chamber (28) is formed between the upper part of the partition plate (27) and the top of the conveyor frame (1), a flow equalizing area (29) is arranged on the partition plate (27), and evenly-arranged flow distributing holes (30) are formed in the flow equalizing area (29).
3. The drying conveyor for a nonwoven fabric for a reverse osmosis membrane according to claim 2, wherein: the utility model discloses a conveyer frame, including conveyer frame (1), including first baffle (32), second baffle (33), baffle (32) and second baffle (33), the both sides downwardly extending in flow equalizing area (29) is equipped with slide rail (31), both sides slide on slide rail (31) respectively is equipped with first baffle (32) and second baffle (33), the top surface of first baffle (32) and second baffle (33) pastes the setting with the surface in flow equalizing area (29), first baffle (32) and second baffle (33) surface are equipped with size and reposition of redundant personnel hole (30) assorted choked flow hole (34), the side of conveyer frame (1) is equipped with drive case (35), be equipped with first drive telescopic motor (36) and second drive telescopic motor (37) in drive case (35), first drive telescopic motor (36) are connected with the tip of first baffle (32), second drive telescopic motor (37) are connected with the tip of second baffle (33), the side of intermediate roll (6), first side roll (7) and second side roll (8) all is equipped with temperature sensor (38).
4. The drying conveyor for a nonwoven fabric for a reverse osmosis membrane according to claim 3, wherein: the wind speed limiting mechanism is arranged on the first spoiler (32) and the second spoiler (33), the wind speed limiting mechanism comprises a first sliding rod (39) and a second sliding rod (40) which are fixed on two sides and are arranged in parallel, a speed reducing net (41) is arranged between the first sliding rod (39) and the second sliding rod (40) in a sliding mode, the tops of two sides of the speed reducing net (41) are respectively fixed with the tops of the first sliding rod (39) and the second sliding rod (40), magnetic pieces (42) are arranged at the bottoms of two sides of the speed reducing net (41), a first electromagnet (43) and a second electromagnet (44) are respectively arranged at two ends of the first sliding rod (39) and two ends of the second sliding rod (40), and the first electromagnet (43) and the second electromagnet (44) at two ends of the first sliding rod (39) and the second sliding rod (40) are respectively connected with a current controller.
5. The drying conveyor for a nonwoven fabric for a reverse osmosis membrane according to claim 4, wherein: the two sides of the curved conveying roller (4) are respectively provided with a first guide plate (45) and a second guide plate (46), the first guide plates (45) and the second guide plates (46) are respectively provided with outflow holes (47), and the upper parts of the opposite surfaces of the first guide plates (45) and the second guide plates (46) are respectively extended to the middle to form round corner parts (48).
6. The drying conveyor for a nonwoven fabric for a reverse osmosis membrane according to claim 5, wherein: the drying chamber comprises a first drying chamber (49) and a second drying chamber (50), a large air volume area (51) is arranged on the partition plate (27) corresponding to the first drying chamber (49), a large-diameter air outlet (52) is arranged on the large air volume area (51), and the upper part of the second drying chamber (50) corresponds to the flow equalizing area (29) of the partition plate (27).
7. The drying conveyor for a nonwoven fabric for a reverse osmosis membrane according to claim 6, wherein: the two sides of the linear conveying roller (3) are provided with supporting seats (53), a rotating motor is arranged in each supporting seat (53), the output end of each rotating motor is connected with the end part of the linear conveying roller (3), a heating cavity (54) is formed in each linear conveying roller (3), a heating resistance wire (55) is arranged in each heating cavity (54), and a plurality of strip round parts (56) are arranged on the surface of each linear conveying roller (3).
8. A method for adjusting a drying conveyor for a nonwoven fabric for a reverse osmosis membrane according to claim 4, characterized by comprising: comprises the following steps of;
s1, collecting values of three temperature sensors (38) at the side edges of any middle roller (6) and a corresponding first side roller (7) and second side roller (8) in a second drying chamber (50);
S2, calculating an average value according to the numerical values of the three temperature sensors (38), making a difference between the numerical values of the temperature sensors (38) at the sides of the first side roller (7) and the second side roller (8) and the average value, comparing the corresponding difference value with a temperature threshold value, and if the difference value is larger than the temperature threshold value, moving a corresponding spoiler above the corresponding side roller, and executing the step S3; if the difference is smaller than the temperature threshold, re-executing the step S1;
S3, calculating the moving distance of the corresponding spoiler, comparing the value of the moving distance with a distance threshold value, and controlling a speed reducing network (41) to cover a flow blocking hole (34) on the corresponding spoiler if the difference value is larger than the threshold value; if the difference is less than the threshold, the adjustment is completed.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1525943A (en) * | 2001-06-19 | 2004-09-01 | Apparatus and method for roll bending heated glass sheets | |
| CN208419506U (en) * | 2018-06-15 | 2019-01-22 | 福建祥源纺织有限公司 | A kind of clothing cloth drying unit of flash baking |
| CN217200415U (en) * | 2022-01-20 | 2022-08-16 | 昆明东春欣业机械制造有限公司 | Plane turning belt conveyor |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200231933Y1 (en) * | 2001-02-12 | 2001-07-19 | 임승복 | The drying apparatus of the nonwoven fabric. |
| US20090243144A1 (en) * | 2008-03-25 | 2009-10-01 | Fujifilm Corporation | Support roller, web conveyance method, solution casting method and solution casting apparatus |
| CN208832935U (en) * | 2018-09-28 | 2019-05-07 | 湖北冠泰建材有限公司 | A kind of drying unit in quartzite slate production |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1525943A (en) * | 2001-06-19 | 2004-09-01 | Apparatus and method for roll bending heated glass sheets | |
| CN208419506U (en) * | 2018-06-15 | 2019-01-22 | 福建祥源纺织有限公司 | A kind of clothing cloth drying unit of flash baking |
| CN217200415U (en) * | 2022-01-20 | 2022-08-16 | 昆明东春欣业机械制造有限公司 | Plane turning belt conveyor |
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