阅读说明：本技术 一种沥青防水卷材涂布用溢料机构 (Flash mechanism is used in coating of pitch waterproofing membrane ) 是由 曾昭奇 匡奕楠 丁爱国 于 2020-06-20 设计创作，主要内容包括：本发明涉及防水卷材生产设备技术领域,更具体地,涉及一种沥青防水卷材涂布用溢料机构。所述沥青防水卷材涂布用溢料机构,包括用于供料的运料管和用于涂布的溢料斗,所述运料管上设有控制流量的阀门,所述溢料斗的纵截面为非对称倒梯形,所述溢料斗安装于所述运料管上方,所述溢料斗下表面开设沥青入口,所述运料管上端开设运料管溢出口,所述运料管溢出口设于所述沥青入口内。采用本发明所述的沥青防水卷材涂布用溢料机构不会出现胎基布张力大、在后段工序中收缩严重的情况,可生产出收缩率小的沥青防水卷材；同时提供一种小型化设计的溢料机构,能达到对胎基布下表面涂布的同时节约了涂盖设备安装和使用所占的空间。(The invention relates to the technical field of waterproof coiled material production equipment, in particular to a flash mechanism for coating an asphalt waterproof coiled material. The overflow mechanism for coating the asphalt waterproof coiled material comprises a material conveying pipe for feeding and an overflow hopper for coating, wherein a valve for controlling flow is arranged on the material conveying pipe, the longitudinal section of the overflow hopper is asymmetrical inverted trapezoid, the overflow hopper is installed above the material conveying pipe, an asphalt inlet is formed in the lower surface of the overflow hopper, an overflow outlet of the material conveying pipe is formed in the upper end of the material conveying pipe, and the overflow outlet of the material conveying pipe is formed in the asphalt inlet. The overflow mechanism for coating the asphalt waterproof coiled material does not have the conditions of large tension of the base fabric and serious contraction in the later process, and the asphalt waterproof coiled material with small contraction rate can be produced; meanwhile, the small-sized flash mechanism is provided, so that the lower surface of the base fabric can be coated, and the occupied space for installing and using a coating device is saved.)

1. The overflow mechanism for coating the asphalt waterproof coiled material is characterized by comprising a material conveying pipe for feeding and an overflow hopper for coating, wherein a valve for controlling flow is arranged on the material conveying pipe, the longitudinal section of the overflow hopper is asymmetrical inverted trapezoid, the overflow hopper is installed above the material conveying pipe, an asphalt inlet is formed in the lower surface of the overflow hopper, an overflow outlet of the material conveying pipe is formed in the upper end of the material conveying pipe, and the overflow outlet of the material conveying pipe is formed in the asphalt inlet.

2. The mechanism of claim 1, wherein the overflow hopper comprises a first side wall and a second side wall inclined toward the conveying direction of the asphalt waterproof roll, the longitudinal section length of the second side wall is greater than that of the first side wall, and the upper surface of the overflow hopper is open horizontally.

3. The mechanism of claim 2, wherein the length of the longitudinal section of the second sidewall exceeds 2 times the length of the longitudinal section of the first sidewall.

4. The mechanism of claim 2, wherein the angle of inclination of the second sidewall of the overflow hopper is 60 ° to 80 °.

5. The asphalt waterproofing membrane of claim 2 coats and uses flash mechanism, characterized by, set up the first heightening board that is used for heightening above the first lateral wall, set up the second heightening board that is used for heightening above the second lateral wall, first heightening board and second heightening board are vertical baffle.

6. The asphalt waterproofing membrane of claim 1 coats and uses flash mechanism, characterized by that, the delivery pipe flash width is 1-3mm, the pitch entry width is 2-4mm, the delivery pipe flash width is less than the pitch entry width, and the delivery pipe flash is located the middle part of pitch entry.

7. The asphalt waterproofing membrane of claim 1 coats and uses flash mechanism, characterized by that, the delivery pipe flash mouth length is 0.8-1.2m, the pitch entry length is 1-1.5m, the delivery pipe flash mouth length is less than the pitch entry length, and the delivery pipe flash mouth is located the middle part of pitch entry.

8. The mechanism of any one of claims 1 to 7, wherein the longitudinal section of the conveying pipe is rectangular or square.

9. The flash mechanism for coating asphalt waterproof coiled materials according to any one of claims 1 to 7, wherein the material conveying pipe is of a double-layer jacket structure comprising an inner material conveying layer and an insulating layer, the insulating layer is provided with a heat-conducting oil inlet and an outlet, and asphalt fluidity in the flash mechanism is maintained by introducing heat-conducting oil into the insulating layer.

10. The overflow mechanism for coating asphalt waterproof coiled material according to claim 9, wherein a closable discharge outlet is arranged at the bottom of the material conveying pipe, and the discharge outlet is connected to the inner layer of the material conveying pipe.

Technical Field

The invention relates to the technical field of waterproof coiled material production equipment, in particular to a flash mechanism for coating an asphalt waterproof coiled material.

Background

The asphalt waterproof coiled material is a coiled material made of asphalt material, base material and surface spreading anti-sticking material, also called asphalt felt, and is commonly used for a pasting type waterproof layer. The asphalt waterproof coiled material comprises a filled coiled material and a non-filled coiled material. The roll-shaped material is made by impregnating base materials such as thick paper or glass fiber cloth, asbestos cloth, cotton and linen fabrics and the like with petroleum asphalt and is called as a base coiled material; asbestos, rubber powder, etc. are mixed into asphalt material, and the rolled material is called rolled coiled material, i.e. tubeless coiled material.

The modified asphalt waterproof coiled material is commonly called modified asphalt felt, and is a curlable sheet-like waterproof material which is prepared by taking a glass fiber felt, a polyester felt, a jute cloth, a polyethylene film, a polyester non-woven fabric, a metal foil or two composite materials as a base, taking synthetic high molecular polymer modified asphalt and oxidized asphalt with the mixing amount of not less than 10% as dip-coating materials and taking powder, sheet and granular mineral materials, synthetic high molecular films and metal films as covering materials. Due to inherent disadvantages of low softening point, high penetration and low temperature brittleness of asphalt itself, the application range of the asphalt is limited when the asphalt is used as a waterproof material. After the asphalt is modified by adding the high molecular polymer, the performances are greatly improved, 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 realistic and possible from the traditional 'heavy, thick, long and big' era to the 'light, thin, short and small' industrialized era.

The production process of the waterproof roll material is to dip-coat asphalt on base fabric such as glass fiber cloth or non-woven fabric, and then extrude the base fabric dipped with asphalt to tamp the asphalt on the base fabric. Two procedures of pre-dipping and coating are needed during production; the pre-dipping has the function of soaking the pre-dipping asphalt into the tire base fabric, so that the tire base fabric can be completely soaked with the asphalt, and water channeling and layering of a finished product after the finished product is in contact with water are avoided; the function of coating is to make the asphalt waterproof layers on the upper and lower surfaces of the base fabric of the waterproof roll material meet certain thickness requirements, and more importantly, to finally obtain a tight and uniform waterproof roll material. The currently common coating process is as follows: the method is characterized in that a pre-soaked base fabric is introduced into an asphalt coating material pool by using a press roller, and the base fabric leaves the material pool after being adhered with the asphalt coating material on the two sides. Therefore, there is a need for improvement of the existing coating device, and in the imported devices introduced at present, there are hopper type devices for coating the lower surface of the base fabric, but these hoppers are made deep to meet the production process and product requirements abroad, and at least hundreds of kilograms of asphalt coating material can be stored in the hoppers, and it takes several hours to melt the residual asphalt when restarting after shutdown, so these hoppers are usually designed to be turnable, and the hoppers are directly turned over to dump the residual asphalt after shutdown, so that it is necessary to reserve a large installation space of instruments and a large use space for turning over the hopper, which is not favorable for miniaturization and intensive manufacturing of the coating device.

Disclosure of Invention

The invention aims to overcome at least one defect of the prior art and provides a flash mechanism for coating an asphalt waterproof coiled material, which is used for solving the problems of large tension and large shrinkage of a base fabric of a waterproof coiled material using an immersion coating cover.

Another object of the present invention is to provide a flashing mechanism with a compact design, which can coat the lower surface of the base fabric and save the space occupied by the installation and use of the coating equipment.

The technical scheme adopted by the invention is as follows:

the overflow mechanism for coating the asphalt waterproof coiled material comprises a material conveying pipe and an overflow hopper, wherein the material conveying pipe is used for feeding materials, the overflow hopper is used for coating materials, a valve for controlling flow is arranged on the material conveying pipe, the longitudinal section of the overflow hopper is asymmetrical inverted trapezoid, the overflow hopper is installed above the material conveying pipe, an asphalt inlet is formed in the lower surface of the overflow hopper, an overflow outlet of the material conveying pipe is formed in the upper end of the material conveying pipe, and the overflow outlet of the material conveying pipe is formed in the asphalt inlet.

In the technical scheme, a mode that the pre-soaked base fabric is pressed into an asphalt coating material pool by using a press roller to enable the base fabric to be adhered with the asphalt coating material on two sides and then leave the material pool to coat the asphalt on the surface of the base fabric is abandoned, and the base fabric passing above the base fabric is coated by adopting a flash mechanism for coating asphalt waterproof coiled materials. The overflow hopper has the function of coating asphalt on the lower surface of the tire base cloth which is horizontally conveyed from the upper part, conveying asphalt coating materials from the overflow port of the material conveying pipe to the overflow hopper from the lower part to the upper part through the asphalt inlet, and continuously supplying the asphalt coating materials to the overflow hopper from the upper part through the material conveying pipe. By adopting the technical scheme, the overflow mechanism for coating the asphalt waterproof coiled material has the advantages that the base fabric of the tire is not required to be pressed into the asphalt coating material pool in the coating process, and the base fabric of the tire is not in a continuous pulling state, so that the conditions of large tension and serious contraction in the post-stage process can be avoided.

In the technical scheme, the longitudinal section of the overflow hopper is designed to be an inverted trapezoid, the upper surface of the overflow hopper is wide, the lower surface of the overflow hopper is narrow, the overflow hopper belongs to an asymmetric inverted trapezoid, the two waist lengths are different, and the overflow hopper is provided with a short waist and a long waist. If the longitudinal section of the hopper is designed to be symmetrical trapezoid and the lengths of the two sides are the same, if the depth of the hopper is controlled to be shallow, the opening on the upper surface of the hopper is very large, and a large installation space is occupied; if the opening on the upper surface of the hopper is made small, the hopper is very deep, a large amount of asphalt coating materials are stored in the hopper, raw materials are wasted, and the production cost is increased. Among this technical scheme, asymmetric inverted trapezoid design can make the upper surface opening size and the hopper degree of depth of overflow hopper all adjust suitable scope, the upper surface opening is great, the hopper is lighter simultaneously, obtain the flash mechanism of a miniaturized design, remaining pitch material is few in the overflow hopper, even restart after shutting down, remaining a small amount of pitch in the hopper also can melt very fast, consequently overflow hopper fixed mounting, needn't overturn, practiced thrift when reaching the base fabric lower surface coating and covered the equipment fixing and used shared space.

Preferably, the overflow hopper comprises a first side wall and a second side wall with a certain inclination angle towards the conveying direction of the asphalt waterproof roll, the longitudinal section length of the second side wall is greater than that of the first side wall, and an opening on the upper surface of the overflow hopper is horizontal. Among this technical scheme, the first lateral wall of excessive hopper is asymmetric inverted trapezoid's short waist promptly, and the second lateral wall that has certain inclination towards pitch waterproofing membrane direction of transfer is long waist promptly, and first lateral wall can be vertical board, makes asymmetric inverted trapezoid become the right trapezoid of inversion, and first lateral wall also does have certain inclination towards the opposite direction of pitch waterproofing membrane conveying, makes asymmetric inverted trapezoid become non-right trapezoid, specifically can carry out the reasonable selection according to equipment fixing space. The length of the longitudinal section of the second side wall is greater than that of the longitudinal section of the first side wall, and meanwhile, the opening in the upper surface of the flash hopper is horizontal, so that the opening in the upper surface of the flash hopper in the technical scheme is horizontal to the base fabric of the tire above, asphalt is uniformly distributed on the base fabric of the tire, and the prepared waterproof coiled material has a better effect.

Further preferably, the second sidewall longitudinal cross-sectional length exceeds 2 times the first sidewall longitudinal cross-sectional length. The length of the longitudinal section of the second side wall exceeds 2 times of that of the first side wall, so that the opening of the overflow hopper is larger, and the coating is more favorably carried out.

Further preferably, the second sidewall of the overflow hopper has an inclination angle of 60 ° to 80 °. The inclination angle of the second side wall is larger than 60 degrees, the opening of the upper surface of the overflow hopper can be ensured to be large, coating is facilitated, the inclination angle cannot exceed 80 degrees, otherwise, the longitudinal section of the overflow hopper is too flat, the opening of the upper surface of the overflow hopper is too large, too large installation space is occupied, meanwhile, the storage of asphalt materials in the overflow hopper is too small, and the condition of uneven coating is likely to occur.

Preferably, first heightening plate for heightening is arranged above the first side wall, second heightening plate for heightening is arranged above the second side wall, and the first heightening plate and the second heightening plate are vertical baffles. The vertically arranged first heightening plate and the vertically arranged second heightening plate are used for improving the height of the upper surface of the overflowing hopper and preventing asphalt coating materials from overflowing from the upper surface.

Preferably, the width of the conveying pipe overflow outlet is 1-3mm, the width of the asphalt inlet is 2-4mm, the width of the conveying pipe overflow outlet is smaller than the width of the asphalt inlet, and the conveying pipe overflow outlet is located in the middle of the asphalt inlet.

Preferably, the length of the conveying pipe overflow outlet is 0.8-1.2m, the length of the asphalt inlet is 1-1.5m, the length of the conveying pipe overflow outlet is smaller than the length of the asphalt inlet, and the conveying pipe overflow outlet is located in the middle of the asphalt inlet.

Preferably, the longitudinal section of the conveying pipe is rectangular or square. Because the lower surface of the flash hopper is horizontal, the material conveying pipe is designed into a rectangle or square and has a horizontal upper surface, so that the joint part of the material conveying pipe and the flash hopper can be more tightly matched, and material leakage is prevented.

Furthermore, the material conveying pipe is of a double-layer jacket structure comprising a material conveying inner layer and a heat insulation layer, the heat insulation layer is provided with a heat conduction oil inlet and a heat conduction oil outlet, and asphalt flowability in the flash mechanism is kept by leading heat conduction oil into the heat insulation layer. The heat conducting oil with a certain temperature flows in the heat preservation layer, can provide heat for the asphalt coating material in the material conveying inner layer, keeps the proper temperature and good fluidity of the asphalt, and enables the asphalt layer coated on the tire base cloth to be more uniform.

Preferably, the bottom of the material conveying pipe is provided with a closable discharge opening, and the discharge opening is connected to the inner layer of the material conveying pipe. The discharge port at the bottom of the material conveying pipe is in a closed state in the coating process, and the asphalt materials in the overflow hopper and the coating inner layer can be discharged and recycled by opening the discharge port after the coating is finished, so that the asphalt is hardly remained in the overflow mechanism. The design that the bin outlet can be closed at the bottom makes the flash hopper of this technical scheme need not to overturn the row material after accomplishing the coating, consequently can practice thrift and scribble the space that the equipment installation and use occupy of covering.

Compared with the prior art, the invention has the beneficial effects that: the overflow mechanism for coating the asphalt waterproof coiled material does not have the conditions of large tension of the base fabric and serious contraction in the later process, and the asphalt waterproof coiled material with small contraction rate can be produced; meanwhile, the small-sized flash mechanism is provided, so that the lower surface of the base fabric can be coated, and the occupied space for installing and using a coating device is saved.

Drawings

Fig. 1 is a schematic perspective view of a flash mechanism according to this embodiment.

Fig. 2 is a schematic perspective view of the combination of the overflow hopper and the insulating layer according to the embodiment.

Fig. 3 is a schematic perspective view of the material conveying inner tube of this embodiment.

FIG. 4 is a top plan view of the flash mechanism of this embodiment.

Fig. 5 is a bottom plan view of the flashing mechanism of this embodiment.

The figure includes: an overflow hopper 400; an overflow hopper lower surface 401; an asphalt inlet 402; a hopper upper surface 403; a first sidewall 404; a first heightening plate 405; a second sidewall 406; a second heightening plate 407; a material conveying pipe 630; a pipe overflow 631; a material handling inner layer 632; an insulating layer 633; a discharge opening 634.

Detailed Description

The drawings are only for purposes of illustration and are not to be construed as limiting the invention. For a better understanding of the following embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.