CN111036505B - Asphalt waterproof coiled material secondary coating equipment - Google Patents
Asphalt waterproof coiled material secondary coating equipmentInfo
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- CN111036505B CN111036505B CN201911366924.2A CN201911366924A CN111036505B CN 111036505 B CN111036505 B CN 111036505B CN 201911366924 A CN201911366924 A CN 201911366924A CN 111036505 B CN111036505 B CN 111036505B
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- roller
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- coiled material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C9/00—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important
- B05C9/08—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation
- B05C9/14—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation the auxiliary operation involving heating or cooling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/007—After-treatment
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- Drying Of Solid Materials (AREA)
- Coating Apparatus (AREA)
Abstract
本发明涉及沥青防水卷材生产设备技术领域，公开了一种沥青防水卷材二次涂盖设备，包括顺序设置的烘干装置和涂盖装置，所述烘干装置包括相距设置且各自独立驱动的两道烘干辊，分别为具有热量的第一烘干辊和第二烘干辊；所述涂盖装置包括用于盛放和/或承接沥青的涂盖池以及设置于涂盖池上方的双直排挤压成型机构，所述双直排挤压成型机构包括相距设置且具有热量的两对成对设置的挤压辊，分别为用于粗压的第一上挤压辊与第一下挤压辊和用于精压的第二上挤压辊与第二下挤压辊，第一上挤压辊的转速比第二上挤压辊的转速大。本发明采用烘干与涂盖相结合的方式，通过多烘干装置和涂盖装置的改进，使两者更相适应，从而促进防水卷材成品质量的提升。
The present invention relates to the technical field of asphalt waterproofing coiled material production equipment, and discloses a secondary coating equipment for asphalt waterproofing coiled material, including a drying device and a coating device arranged in sequence, wherein the drying device includes two drying rollers arranged at a distance and driven independently, namely, a first drying roller and a second drying roller with heat; the coating device includes a coating pool for containing and/or receiving asphalt and a double straight-row extrusion molding mechanism arranged above the coating pool, wherein the double straight-row extrusion molding mechanism includes two pairs of extrusion rollers arranged at a distance and having heat, namely, a first upper extrusion roller and a first lower extrusion roller for rough pressing and a second upper extrusion roller and a second lower extrusion roller for fine pressing, and the rotation speed of the first upper extrusion roller is greater than that of the second upper extrusion roller. The present invention adopts a method of combining drying and coating, and through the improvement of multiple drying devices and coating devices, the two are more compatible, thereby promoting the improvement of the quality of finished waterproofing coiled materials.
Description
Technical Field
The invention relates to the technical field of asphalt waterproof coiled material production equipment, in particular to asphalt waterproof coiled material secondary coating equipment.
Background
The asphalt waterproof coiled material is coiled material made of asphalt material, tyre material, surface spreading anti-adhesion material, etc. and is also called asphalt felt, and is used in pasting waterproof layer. The asphalt waterproof coiled material comprises a coiled material with a tire and a coiled material without a tire. The rolled material is made up by using thick paper or glass fibre cloth, asbestos cloth and cotton and hemp fabric, etc. and impregnating them with petroleum asphalt, and mixing them with asphalt material, and rolling so as to obtain the invented rolled material.
The modified asphalt waterproof coiled material is commonly called as modified asphalt felt, and is a coiled sheet waterproof material which is prepared by taking glass fiber felt, polyester felt, jute cloth, polyethylene film, polyester non-woven fabric, metal foil or two composite materials as a base, taking synthetic high polymer modified asphalt with the doping amount of not less than 10 percent as dip-coating materials, and taking powdery, sheet-shaped or granular mineral materials, synthetic high polymer films and metal films as covering materials. The range of application is limited when it is used as a water-repellent material due to inherent disadvantages of asphalt itself such as low softening point, high penetration, and low-temperature brittleness. After the high molecular polymer is added into asphalt for modification, the performance is greatly improved, so that the weather resistance, the temperature sensitivity (high temperature characteristic and low temperature flexibility) and the adaptability to substrate cracking are obviously improved, and the waterproof material prepared by using the modified asphalt is realized and possible from the past times of heavy, thick, long and large into the industrialized times of light, thin, short and small.
Whether unmodified or modified asphalt waterproof coiled materials with a tire belong to the waterproof coiled materials with a tire, the production process of the waterproof coiled materials is to dip-coat asphalt on a tire base cloth such as non-woven fabrics, and then squeeze the tire base cloth dipped with the asphalt to tamp the asphalt on the tire base cloth. The pre-soaking function is to soak the asphalt for pre-soaking into the base cloth to ensure that the base cloth can be fully soaked with the asphalt, avoiding water channeling and layering of the finished product after meeting water, and the pre-soaking is usually carried out before the coating, so that the pre-soaking effect is influenced, the coating success and failure are related, the pre-soaking base is prevented from being pulled to deform, and the pre-soaking base is generally dried in a suspended drying or drying mode in the prior art, so that the drying effect of the drying mode is often unsatisfactory. On one hand, the coating is used for achieving a certain thickness requirement, and more importantly, the waterproof coiled material is obtained tightly and uniformly finally, however, the waterproof coiled material produced by the existing coating device is poor in tightness and uniformity, and the service life of the waterproof coiled material is influenced. Therefore, there is a need for improvements over existing dry coating apparatus.
Disclosure of Invention
In view of the above, the present invention provides a secondary covering device for asphalt waterproof coiled materials, which solves the problems of contradiction between the drying effect and the pulling deformation and the difficulty in achieving the expected effect in covering.
In order to solve the technical problems, the invention adopts the following technical scheme:
the secondary coating equipment for the asphalt waterproof coiled material comprises a drying device and a coating device which are sequentially arranged, wherein the drying device comprises two drying rollers which are arranged at intervals and are driven independently, the two drying rollers are respectively a first drying roller and a second drying roller with heat, the coating device comprises a coating pool for containing and/or bearing asphalt and a double-straight-row extrusion forming mechanism arranged above the coating pool, the double-straight-row extrusion forming mechanism comprises two pairs of extrusion rollers which are arranged at intervals and are provided with heat, the first upper extrusion roller and the first lower extrusion roller which are used for coarse compression and the second upper extrusion roller and the second lower extrusion roller which are used for fine compression, and the rotating speed of the first upper extrusion roller is higher than that of the second upper extrusion roller.
According to the production process of the asphalt waterproof coiled material, the invention provides a set of asphalt waterproof coiled material secondary coating equipment for effectively improving the quality of a waterproof coiled material finished product aiming at a drying coating process after asphalt pre-impregnation, and the equipment comprises a drying device and a coating device which are sequentially arranged. The drying device is mainly formed by two drying rollers which are independently driven at intervals, the two drying rollers are driven by different driving mechanisms respectively, and the waterproof coiled material is not stretched and deformed even if the viscosity of the waterproof coiled material is greatly improved at high temperature. In addition, the invention abandons the traditional air-separating drying mode, adopts contact type drying, and greatly improves the drying effect. The device is covered to scribble, each squeeze roll all has the heat, further soften the pitch of contact department when the extrusion makes it extrude the air more fast, fill the gap, prevent the bubble production, realize the thick pressure to waterproofing membrane under the extrusion effect of the first squeeze roll and the first squeeze roll down on the great first squeeze roll of rotational speed, realize the smart pressure to waterproofing membrane under the extrusion effect of the second squeeze roll down on the second that the rotational speed is less relatively, improve extruded compactness and homogeneity through the combination of thick pressure, smart two processes, two direct-vent squeeze forming mechanisms have continued drying device's design theory equally, can also greatly reduced the probability of warping when improving the time delay homogeneity.
The rotation speed of the first upper squeeze roller is higher than that of the first lower squeeze roller, the rotation speed of the second upper squeeze roller is lower than that of the second lower squeeze roller, and a speed difference is formed between the upper squeeze roller and the lower squeeze roller, so that the first upper squeeze roller forms a strickling effect on the upper surface of the waterproof coiled material, the second upper squeeze roller forms a compacting effect on the upper surface of the waterproof coiled material, the waterproof coiled material is strickled to a certain extent, and the waterproof coiled material is strickled to a certain extent while compacting, so that the compactness uniformity of the waterproof coiled material is further improved. The rotating speed of the first lower squeeze roller is basically consistent with that of the second lower squeeze roller, and the continuous compacting effect of the first lower squeeze roller on the lower surface of the waterproof coiled material is kept. Each squeeze roller is driven by four large-moment servo motors respectively.
At squeeze roll and waterproofing membrane contact department, the linear velocity direction of first upper squeeze roll is the same with the direction of movement of waterproofing membrane, the linear velocity direction of first lower squeeze roll is opposite with the direction of movement of waterproofing membrane, the linear velocity direction of second upper squeeze roll is the same with the direction of movement of waterproofing membrane, the linear velocity direction of second lower squeeze roll is opposite with the direction of movement of waterproofing membrane. In other words, the rotation directions of all the squeeze rolls are kept consistent, the upper squeeze roll forms friction force which is consistent with the trend of the waterproof coiled material on the contact position of the waterproof coiled material and pushes the waterproof coiled material to move forwards, and the lower squeeze roll forms friction force which is opposite to the trend of the waterproof coiled material on the contact position of the waterproof coiled material and forms a certain scraping effect when compacting.
The distance between the two pairs of extrusion rollers is not more than 60cm, and the distance is too large, so that compaction is not facilitated to be completed at a proper temperature, the continuity of rough pressing and coining is not facilitated to be maintained, and the synergistic effect of the two is not facilitated to be exerted.
Each squeeze roller is connected above the coating pool in a lifting manner through a ball screw transmission mechanism, so that the thickness control of the waterproof coiled material is realized, and the ball screw transmission mechanism has higher precision and is beneficial to the accurate control of the thickness of the waterproof coiled material.
The length of the squeeze roll is generally large, the squeeze roll with a certain length is easy to deform to a certain extent due to gravity or pressure, and the defect that the waterproof roll is thick in the middle and thin on two sides is caused, and for this reason, the squeeze roll is preferably designed to have a structure that the diameter of the middle is larger than that of the two ends.
The coating device also comprises a dipping roller which is arranged in the coating pool or can be lifted into the coating pool, and asphalt is coated on the lower surface of the waterproof coiled material. The material soaking roller is positioned between the coating pool wall and the double in-line extrusion forming mechanism, and a guide roller is further arranged between the material soaking roller and the coating pool wall to prevent the waterproof coiled material from touching the coating pool wall and even scraping asphalt presoaked in the previous working procedure.
The feeding side of the double-in-line extrusion forming mechanism is also provided with a waterfall type blanking mechanism, and asphalt is uniformly spread on the upper surface of the waterproof coiled material. The feeding side of each pair of squeeze rollers is provided with a waterfall type blanking mechanism, asphalt is coated on the upper surface of the waterproof coiled material before squeezing, and the waterproof coiled material is ensured to have enough thickness and tightness.
The drying roller and the extrusion roller are sandwich oil-passing rollers, heat-conducting oil is passed through the sandwich oil-passing rollers, the temperature of the heat-conducting oil in the drying roller is 190-220 ℃, the temperature of the heat-conducting oil in the extrusion roller is 220 ℃, and the temperature of the roller surface is 170-190 ℃. The drying roller and the squeeze roller are designed into a sandwich oil-passing structure, and heat is provided for the drying roller by adopting a heat conduction oil heating mode, so that the temperature of the drying roller is not suddenly changed, the variation is not too large, the waterproof coiled material is effectively prevented from being damaged, and even fire is caused.
The roller wrapping rate of each drying roller is not lower than 75%, the higher roller wrapping rate can provide more drying area, the drying efficiency and the utilization rate of the drying roller are improved, the span of equipment is reduced, and therefore space is saved, more importantly, the higher roller wrapping rate is favorable for maintaining the temperature balance of heat conduction oil in the drying roller, the deformation of the drying roller caused by thermal expansion and cold contraction is avoided, and the service life of the equipment is prolonged.
The angle between the common plane where the first drying roller rotating shaft and the second drying roller rotating shaft are positioned and the horizontal plane is 60-80 degrees, and the drying device is also provided with two drying guide rollers which are respectively arranged at intervals with the first drying roller and the second drying roller, so that the roller wrapping rate of the drying rollers is not lower than 75%.
The drying device further comprises bouncing frames arranged on two sides, so that the waterproof coiled material is further prevented from being stretched, and the effect of buffering is achieved. The bouncing frame comprises a guide rail, bouncing rollers connected to the guide rail in a sliding manner, a spring buffer device arranged below the bouncing rollers, and a gravity block for balancing the bouncing rollers through a chain wheel mechanism.
Each drying roller is driven by a variable frequency motor respectively, and the waterproof coiled material is further prevented from being stretched.
Compared with the prior art, the waterproof coiled material coating device has the following beneficial effects that the waterproof coiled material coating device adopts a mode of combining drying and coating, and is more suitable by improving a plurality of drying devices and the coating device, so that the quality of the waterproof coiled material finished product is promoted. The invention abandons the traditional air-separation drying mode, adopts contact type drying, greatly improves the drying effect, and the drying device is mainly formed by arranging two drying rollers which are independently driven at intervals, wherein the two drying rollers are respectively driven by different driving mechanisms, and the waterproof coiled material is not stretched and deformed even if the viscosity is greatly improved at high temperature; the device is covered to scribble, each squeeze roll all has the heat, further soften the pitch of contact department when the extrusion makes it extrude the air more fast, fill the gap, prevent the bubble production, realize the thick pressure to waterproofing membrane under the extrusion effect of the first squeeze roll and the first squeeze roll down on the great first squeeze roll of rotational speed, realize the smart pressure to waterproofing membrane under the extrusion effect of the second squeeze roll down on the second that the rotational speed is less relatively, improve extruded compactness and homogeneity through the combination of thick pressure, smart two processes, two direct-vent squeeze forming mechanisms have continued drying device's design theory equally, can also greatly reduced the probability of warping when improving the time delay homogeneity.
Drawings
Fig. 1 is a schematic structural view of an asphalt waterproof roll secondary coating device.
Fig. 2 is a schematic structural view of the drying apparatus.
Fig. 3 is a schematic structural view of the capping device.
Fig. 4 is a schematic diagram of the operation of a dual inline extrusion mechanism.
Reference numerals illustrate the drying apparatus 100, the first drying roller 111, the second drying roller 112, the drying guide roller 113, the bouncing frame 120, the guide rail 121, the bouncing roller 122, the spring buffer 123, the coating apparatus 200, the coating pool 210, the first upper pressing roller 221, the first lower pressing roller 222, the second upper pressing roller 223, the second lower pressing roller 224, the dipping roller 231, the guide roller 232, the waterfall type blanking mechanism 240, and the deviation correcting apparatus 300.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the invention, certain components of the drawings may be omitted, enlarged or reduced in order to better illustrate the present embodiments, and do not represent the actual product size, it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted, and positional relationships are described in the drawings for illustrative purposes only and are not to be construed as limiting the invention. The present invention will be described in further detail with reference to specific examples.
As shown in fig. 1, a secondary coating device for asphalt waterproof coiled materials comprises a drying device 100, a deviation correcting device 300 and a coating device 200 which are sequentially arranged.
As shown in fig. 2, the drying device 100 includes two drying rollers and bouncing frames 120 disposed at both sides. The two drying rollers are arranged at intervals, are driven independently and have heat, the drying rollers are sandwich oil-passing rollers, heat conduction oil is passed through the sandwich oil-passing rollers, and the temperature of the heat conduction oil is 190-220 ℃. The roller wrapping rate of each drying roller is not lower than 75%, the higher roller wrapping rate can provide more drying area, the drying efficiency and the utilization rate of the drying roller are improved, the span of equipment is reduced, and therefore space is saved, more importantly, the higher roller wrapping rate is favorable for maintaining the temperature balance of heat conduction oil in the drying roller, the deformation of the drying roller caused by thermal expansion and cold contraction is avoided, and the service life of the equipment is prolonged. The two drying rollers are a first drying roller 111 and a second drying roller 112 with heat respectively, the angle between the common plane where the rotation shafts of the first drying roller 111 and the second drying roller 112 are positioned and the horizontal plane is 60-80 degrees, the drying device 100 is also provided with two drying guide rollers 113 which are respectively arranged at intervals from the first drying roller 111 and the second drying roller 112, and the roller wrapping rate of the drying rollers is not lower than 75%. The bouncing rack 120 comprises a guide rail 121, a bouncing roller 122 slidably connected to the guide rail, a spring buffer device 123 arranged below the bouncing roller, and a gravity block for balancing the bouncing roller through a sprocket mechanism, so that the waterproof coiled material is further prevented from being stretched, and the function of buffering is achieved.
As shown in fig. 3, the capping device 200 includes a capping tank 210, a double inline extrusion mechanism disposed above the capping tank 210, a dip roll 231 disposed in the capping tank 210 or liftable into the capping tank 210, and a waterfall type blanking mechanism 240 disposed on the feed side of the double inline extrusion mechanism. The coating bath 210 is used to hold and/or receive asphalt. The double-inline extrusion forming mechanism comprises two pairs of extrusion rollers which are arranged at intervals and provided with heat, the extrusion rollers are sandwich oil-passing rollers, heat conduction oil is passed through the sandwich oil-passing rollers, the temperature of the heat conduction oil is 220 ℃, and the temperature of the roller surface is 170-190 ℃. As shown in fig. 4, the two pairs of squeeze rolls are respectively a first upper squeeze roll 221 and a first lower squeeze roll 222 for rough squeeze and a second upper squeeze roll 223 and a second lower squeeze roll 224 for finish squeeze, the rotation speed of the first upper squeeze roll 221 is larger than that of the second upper squeeze roll 223, the rotation speed v 11 of the first upper squeeze roll 221 is larger than that v 12 of the first lower squeeze roll 222, the rotation speed v 21 of the second upper squeeze roll 223 is smaller than that v 22 of the second lower squeeze roll 224, the rotation speed v 12 of the first lower squeeze roll 222 and the rotation speed v 22 of the second lower squeeze roll 224 are kept substantially the same, the linear speed direction of the first upper squeeze roll 221 is the same as that of the waterproof roll, the linear speed direction of the first lower squeeze roll 222 is opposite to that of the waterproof roll, the linear speed direction of the second upper squeeze roll 223 is the same as that of the waterproof roll, and the linear speed of the second lower squeeze roll 224 is opposite to that of the waterproof roll at the contact point between the squeeze rolls. The distance between the two pairs of extrusion rollers is not more than 60cm, and the distance is too large, so that compaction is not facilitated to be completed at a proper temperature, the continuity of rough pressing and coining is not facilitated to be maintained, and the synergistic effect of the two is not facilitated to be exerted. Each squeeze roller is respectively connected above the coating pool 210 in a lifting manner through a ball screw transmission mechanism, so that the thickness control of the waterproof coiled material is realized, and the ball screw transmission mechanism has higher precision and is beneficial to the accurate control of the thickness of the waterproof coiled material. The length of the squeeze roll is generally large, the squeeze roll with a certain length is easy to deform to a certain extent due to gravity or pressure, and the defect that the waterproof roll is thick in the middle and thin on two sides is caused, and for this reason, the squeeze roll is preferably designed to have a structure that the diameter of the middle is larger than that of the two ends. The dipping roller 231 is mainly used for coating asphalt on the lower surface of the waterproof coiled material. The soaking roller 231 is located between the wall of the coating tank 210 and the double in-line extrusion forming mechanism, and a guiding roller 232 is further arranged between the soaking roller 231 and the wall of the coating tank 210 to prevent the waterproof coiled material from touching the wall of the coating tank 210 and even scraping pre-process pre-impregnated asphalt. The waterfall type blanking mechanism 240 uniformly spreads asphalt on the upper surface of the waterproof coiled material. The feeding side of each pair of squeeze rollers is provided with a waterfall type blanking mechanism 240, and asphalt is coated on the upper surface of the waterproof coiled material before squeezing, so that the waterproof coiled material is ensured to have enough thickness and tightness.
According to the production process of the asphalt waterproof coiled material, the embodiment provides a set of asphalt waterproof coiled material secondary coating equipment for effectively improving the quality of a waterproof coiled material finished product aiming at a drying coating process after asphalt pre-impregnation, and the asphalt waterproof coiled material secondary coating equipment comprises a drying device 100 and a coating device 200 which are sequentially arranged. The drying device 100 is mainly composed of two drying rollers which are independently driven at intervals, the two drying rollers are driven by different driving mechanisms respectively, and the waterproof coiled material is not stretched and deformed even if the viscosity of the waterproof coiled material is greatly improved at high temperature. In addition, the invention abandons the traditional air-separating drying mode, adopts contact type drying, and greatly improves the drying effect. The coating device 200 adopts a double-straight-row extrusion forming mechanism, each extrusion roller has heat, asphalt at the contact part is further softened while extrusion, so that air is extruded faster, gaps are filled, bubbles are prevented from being generated, coarse extrusion of the waterproof coiled material is realized under the extrusion action of the first upper extrusion roller 221 and the first lower extrusion roller 222 with larger rotating speed, finish extrusion of the waterproof coiled material is realized under the extrusion action of the second upper extrusion roller 223 and the second lower extrusion roller 224 with relatively smaller rotating speed, the extrusion compactness and uniformity are improved through the combination of the coarse extrusion and the finish extrusion, the design concept of the drying device 100 is continued by the double-straight-row extrusion forming mechanism, and the probability of deformation is also greatly reduced while the time delay uniformity is improved.
Referring to fig. 4, the rotation speed of the first upper squeeze roller 221 is greater than that of the first lower squeeze roller 222, the rotation speed of the second upper squeeze roller 223 is less than that of the second lower squeeze roller 224, and a speed difference is formed between the upper squeeze roller and the lower squeeze roller, so that the first upper squeeze roller 221 forms a scraping effect on the upper surface of the waterproof roll, the second upper squeeze roller 223 forms a compacting effect on the upper surface of the waterproof roll, and the waterproof roll has a certain degree of compaction while being scraped, and also has a certain degree of scraping effect while compacting, so that the compactness uniformity of the waterproof roll is further improved. The rotation speed of the first lower squeeze roll 222 is substantially identical to that of the second lower squeeze roll 224, and the continuous compacting effect on the lower surface of the waterproof roll is maintained. Each squeeze roller is driven by four large-moment servo motors respectively.
Referring to fig. 4, at the contact position of the squeeze rolls with the waterproof roll, the linear velocity direction of the first upper squeeze roll 221 is the same as the moving direction of the waterproof roll, the linear velocity direction of the first lower squeeze roll 222 is opposite to the moving direction of the waterproof roll, the linear velocity direction of the second upper squeeze roll 223 is the same as the moving direction of the waterproof roll, and the linear velocity direction of the second lower squeeze roll 224 is opposite to the moving direction of the waterproof roll. In other words, the rotation directions of all the squeeze rolls are kept consistent, the upper squeeze roll forms friction force which is consistent with the trend of the waterproof coiled material on the contact position of the waterproof coiled material and pushes the waterproof coiled material to move forwards, and the lower squeeze roll forms friction force which is opposite to the trend of the waterproof coiled material on the contact position of the waterproof coiled material and forms a certain scraping effect when compacting.
It is to be understood that the above examples of the present invention are provided by way of illustration only and not by way of limitation of the embodiments of the present invention. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.
Claims (8)
1. The secondary coating equipment for the asphalt waterproof coiled material is characterized by comprising a drying device and a coating device which are sequentially arranged, wherein the drying device comprises two drying rollers which are arranged at intervals and are driven independently, the two drying rollers are respectively a first drying roller and a second drying roller which are provided with heat, the coating device comprises a coating pool for containing and/or receiving asphalt and a double straight-line extrusion forming mechanism arranged above the coating pool, the double straight-line extrusion forming mechanism comprises two pairs of extrusion rollers which are arranged at intervals and are provided with heat, the two pairs of extrusion rollers are respectively a first upper extrusion roller and a first lower extrusion roller which are used for coarse extrusion and a second upper extrusion roller and a second lower extrusion roller which are used for fine extrusion, the rotation speed of the first upper extrusion roller is higher than that of the second upper extrusion roller, the rotation speed of the first upper extrusion roller is higher than that of the first lower extrusion roller, the rotation speed of the second upper extrusion roller is lower than that of the second lower extrusion roller, and the rotation speed of the first lower extrusion roller is equal to that of the second lower extrusion roller.
2. The asphalt waterproof roll secondary coating apparatus according to claim 1, wherein at a contact position of the pressing roll and the waterproof roll, a linear velocity direction of the first upper pressing roll is the same as a moving direction of the waterproof roll, a linear velocity direction of the first lower pressing roll is opposite to the moving direction of the waterproof roll, a linear velocity direction of the second upper pressing roll is the same as the moving direction of the waterproof roll, and a linear velocity direction of the second lower pressing roll is opposite to the moving direction of the waterproof roll.
3. The asphalt waterproof roll secondary coating apparatus according to claim 1, wherein a distance between the two pairs of squeeze rolls is not more than 60cm.
4. The asphalt waterproof roll secondary coating apparatus according to claim 1, wherein each squeeze roll is respectively connected above the coating pool in a lifting manner through a ball screw transmission mechanism so as to realize the thickness control of the waterproof roll.
5. The secondary coating equipment for the asphalt waterproof coiled material according to any one of claims 1-3, wherein the drying roller and the extrusion roller are sandwich oil-passing rollers, heat conduction oil is passed through the sandwich oil-passing rollers, the temperature of the heat conduction oil in the drying roller is 190-220 ℃, the temperature of the heat conduction oil in the extrusion roller is 220 ℃, and the roller surface temperature is 170-190 ℃.
6. The asphalt waterproof roll secondary coating equipment according to any one of claims 1 to 3, wherein the roll wrapping rate of each drying roll is not lower than 75%.
7. The asphalt waterproof roll secondary coating equipment according to any one of claims 1 to 3, wherein the drying device further comprises bouncing frames arranged on two sides.
8. The asphalt waterproof roll secondary coating device according to any one of claims 1 to 3, wherein each drying roller is driven by a variable frequency motor.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911366924.2A CN111036505B (en) | 2019-12-26 | 2019-12-26 | Asphalt waterproof coiled material secondary coating equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911366924.2A CN111036505B (en) | 2019-12-26 | 2019-12-26 | Asphalt waterproof coiled material secondary coating equipment |
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| CN111036505A CN111036505A (en) | 2020-04-21 |
| CN111036505B true CN111036505B (en) | 2025-07-25 |
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