WO2016124121A1 - 连续卧式蒸煮锅 - Google Patents

连续卧式蒸煮锅 Download PDF

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Publication number
WO2016124121A1
WO2016124121A1 PCT/CN2016/073070 CN2016073070W WO2016124121A1 WO 2016124121 A1 WO2016124121 A1 WO 2016124121A1 CN 2016073070 W CN2016073070 W CN 2016073070W WO 2016124121 A1 WO2016124121 A1 WO 2016124121A1
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WIPO (PCT)
Prior art keywords
feed
pot body
pot
feeding
continuous horizontal
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PCT/CN2016/073070
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English (en)
French (fr)
Inventor
李�昊
陈嘉川
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李�昊
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Publication date
Application filed by 李�昊 filed Critical 李�昊
Priority to US15/549,206 priority Critical patent/US10422077B2/en
Publication of WO2016124121A1 publication Critical patent/WO2016124121A1/zh

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    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21CPRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C7/00Digesters
    • D21C7/02Rotary digesters
    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21CPRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C7/00Digesters
    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21CPRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C7/00Digesters
    • D21C7/06Feeding devices
    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21CPRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C7/00Digesters
    • D21C7/08Discharge devices
    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21CPRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C7/00Digesters
    • D21C7/10Heating devices

Definitions

  • the invention relates to the technical field of papermaking machinery and equipment, in particular to a continuous horizontal cooking pot capable of thoroughly mixing grass and wood chips with a chemical liquid, cooking and obtaining a papermaking slurry.
  • the cooking pot is one of the more commonly used equipments in the papermaking industry. Usually, the steaming pot is used to thoroughly mix and stir the grass or wood chips and the liquid in a high temperature and high pressure environment to obtain a paper pulp. The mixing and cooking effects of the cooking pot are on the slurry. The productivity and the quality of the later paper have a crucial impact.
  • the cooking pot is roughly divided into two types of structures: a vertical cooking pot and a horizontal cooking pot.
  • a vertical cooking pot For horizontal cooking pots, the more common spherical pots can realize batch cooking of papermaking pulp, but can not achieve continuous cooking of papermaking pulp, so its efficiency is lower, and more importantly, this form
  • the cooking pot has poor effect in gas, liquid and solid cooking.
  • liquid and solid accumulate in the lower part of the spherical pot body, and the gas always accumulates in the upper part of the spherical pot body, various There is no effective and sufficient mixing between the reactants, resulting in poor cooking effect;
  • another common structural form of the horizontal cooking pot is that a plurality of (at least four) horizontal tubular pots are connected in series to form a cooking line. In order to ensure the effect of cooking, these cooking pots need to be arranged one on top of the other, relying on the auger in the horizontal tube pot and the gravity of the slurry to achieve continuous cooking.
  • This type of cooking pot because the height of a single pot is usually in one The floor is about two feet high, so there are many defects: First, the layout of multiple horizontal tube pots requires the construction of corresponding floors, the construction cost is higher; second, the horizontal tube of each layer The pot body needs a separate power system to provide power, and the overall power consumption is high. Third, all the augers can simply push the slurry forward, and cannot fully mix the slurry in the pot body. Oxygen-alkali cooking and other forms. For vertical cooking pots, firstly, most of them can only perform batch cooking of papermaking pulp, and the cooking efficiency is low. Secondly, since the solid-liquid mixture is usually under, and the gas is on, the vertical cooking pot cannot be effective. Full mixing and cooking, the final cooking effect is not good.
  • the invention provides a continuous digester with a rotatable pot body, which can improve the cooking uniformity, reduce the liquid ratio and is particularly suitable for gas phase cooking.
  • a continuous horizontal cooking pot comprising a cylindrical pressure type pot, the pot body being rotatable about its own central axis, one end of the pot body being connected to the inner cavity thereof a feeding device capable of closing the pot body, and the other end is provided with a discharging device communicating with the inner cavity thereof on the central axis of the pot body;
  • the feeding device is at least divided into two feeding shells that communicate with each other, and a feeding shell communicates with the inner cavity of the pot body and rotates coaxially and synchronously with the pot body.
  • Another section of the feed housing is relatively fixed and connected to the feed port, and a sealing device is disposed between the rotating section and the fixed section.
  • the feeding device further comprises a feed spiral disposed in the feed casing, the feed spiral coincides with a central axis of the pan, the feed spiral and The pot body rotates relative to each other.
  • the pot body is provided with a sealing plate covering the opening of the end of the feeding shell, and the end of the end of the pot body is further fixed with a limiter, the stopper is opposite to the sealing
  • the plate applies a pulling force that is opposite to the feed direction.
  • the feed screw has a compression ratio
  • the feed casing has a plurality of filter holes
  • the outer casing of the feeding casing is provided with a water collecting casing fixedly connected to the feeding port, and a lower surface of the water collecting casing is inclined, and a drain port is opened at a lowest end thereof.
  • the joint of the feed casing and the feed port is provided with a bearing for eliminating the beating of the pan.
  • the feed housing is connected to a feeder that can supply the inner cavity of the pot and prevent the pressure inside the pot from leaking, and the feeder is connected to the feed port.
  • the inner wall of the pot body is further provided with a plurality of lifting plates, and the lifting plates are arranged in sections in the axial direction of the pot body, and are disposed between two adjacent lifting plates. There are circular partitions.
  • At least the inner wall of the feed end of the pot body is provided with a screw pusher blade and a stirring tooth.
  • the feeder comprises a auxiliary feed spiral above the feed screw, the auxiliary feed screw has a compression ratio, and the feed port is located at the auxiliary feed spiral Above, a discharge plate of the auxiliary feed screw is provided with a sealing plate opposite to the feed direction.
  • the beneficial effect of the invention is that the continuous horizontal cooking pot can realize the sufficient mixing of the materials in the inner cavity by the rotation of the horizontal pot body, and at the same time, the mixture discharged into the pot body through the feeding device. A sufficient reaction is achieved under the action of the cooking device, and the finally obtained papermaking slurry is discharged from the discharging device under high pressure conditions in the pot body.
  • the continuous horizontal cooking pot of the structural form can not only realize continuous cooking of the papermaking slurry, but also improve The efficiency of cooking, and can fully and effectively achieve the full mixing of the material and the liquid, and improve the cooking effect.
  • the feeding shell is set to two sections, a section of the feeding shell communicates with the inner cavity of the pot body and rotates coaxially and synchronously with the pot body, and the other section of the feeding shell is relatively fixed and connected to the feeding port, the rotating section and the fixed section A sealing device is provided between the segments to prevent high pressure leakage in the pan.
  • the material placed in the feed port can be squeezed and pushed forward along the feed casing, thereby forming a high-density material block at the junction of the feed shell and the pot body, and
  • the sealing plate in the pot body covering the opening end of the feeding shell acts against the material block under the action of the stopper until the material block pushes the sealing plate into the pot body under the action of the feeding spiral.
  • the high pressure formed by the cooking action of the cooking device in the pot body presses the sealing plate tightly on the end opening of the feeding shell to prevent the pressure inside the pot body from leaking out and ensure the cooking effect.
  • Opening a plurality of filter holes in the feed casing enables the feed spiral to rotate the material block, extruding the moisture in the material, and then flowing from the filter hole to the outer water collecting casing, and finally from the water outlet Discharge to prevent some of the moisture in the material from entering the pot.
  • the high temperature and high pressure steam can be introduced into the pot body through the steam inlet tube, and the interlayer can be disposed outside the pot body, and heating can be performed by the heat conducting oil, and the latter can avoid excessive incorporation of the slurry into the pot body. Moisture, to ensure the effect of cooking.
  • FIG. 1 is a schematic structural view of an embodiment of the present invention
  • Figure 2 is a cross-sectional view taken along line A-A of Figure 1;
  • Figure 3 is a schematic view of the B direction in Figure 1;
  • Figure 4 is a partial enlarged view of the portion C in Figure 1;
  • Figure 5 is a partial enlarged view of the portion D in Figure 1;
  • Figure 6 is a schematic structural view of another embodiment of the present invention.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • the cooking pot first comprises a cylindrical pot body 1, which can be placed horizontally or tilted.
  • the height of the material end (the right end of the figure) is higher than the height of the discharge end (the left end of the figure), and a backing plate 14 may be disposed below the end of the pot body 1 to adjust the inclination angle of the pot body 1 as needed.
  • the pot body can also be designed as a forward cone (small feed head, large discharge head); it can also be designed as a reverse cone; it can also be designed as an elliptical cylinder (large in the middle, small in the middle) or small in the middle
  • the combination of two cones; in order to improve the force of the pot body, at least one of the pot body can be designed to be semi-circular, and the above different pot forms can be adapted to different cooking process requirements, all of which are within the protection scope of the present technology. within.
  • the continuous horizontal cooking pot differs from the prior art cooking pot in that the pot body 1 of the cooking pot is rotatable along its own central axis, which enables very good mixing of materials.
  • the cooking pot generally comprises several parts of a feeding device, a discharging device and a cooking device, and the structure of these portions will be described in detail below.
  • the feeding device 2 of this embodiment first comprises a feed port 6 which is stationary and which is connected to a feed housing 5
  • the feed casing 5 includes two sections communicating with each other, and the two sections of the feed casing 5 are provided with a sealing device, and a section close to the inlet port 6 is fixed to the inlet port 6, and A section adjacent to the pot body 1 is in communication with the inner cavity of the pot body 1, and the feed housing 5 and the pot body 1 are synchronously rotated, and the feed housing 5 and the relatively fixed feed housing are rotated with the pot body.
  • the demarcation point of 5 is preferably in the spiral uncompressed section adjacent the feed opening 6, which makes the arrangement of the sealing device very simple, requiring only the rotating feed housing and the fixed feed housing to have a contact surface.
  • a feed screw 7 ie, auger
  • the feed screw 7 coincides with the central axis of the pot body 1, and the feed screw 7 is rotated by the power mechanism, thereby self-feeding
  • the material put into the port 6 is pushed into the pot body 1 along the feed casing 5, and the feed screw 7 and the pot body 1 are relatively rotated.
  • the feed screw 7 is selected with The feed spiral of the compression ratio, that is, the diameter of the feed screw 7 is gradually reduced along the moving direction of the material, and accordingly, the radial dimension of the feed casing 5 is gradually reduced along the transport direction of the material, so that the advantage is that The material is continuously extruded to form a high-density material block, and then part of the moisture doped in the material is extruded.
  • a plurality of filter holes are formed in the feed casing 5, that is, the feed casing 5 is changed into a filter plate, and a water collecting casing 10 is covered on the outer periphery of the feed casing 5,
  • the water collecting casing 10 is fixedly coupled to the inlet port 6, and the lower surface of the water collecting casing 10 is inclined, and a drain port 11 is provided at the lowest end thereof.
  • a passage may be formed in the intermediate shaft of the feed screw 7 to form a liquid medicine inlet pipe 4, and the liquid medicine is directly introduced into the pot body 1 therefrom.
  • the liquid medicine and the material may be doped together and put together from the feed port 6.
  • other methods may be adopted.
  • another structure for introducing the liquid medicine into the pot body 1 is described. form.
  • the diameter of the pot body 1 is usually about 2M, and the length is about 10M. When it rotates, it will inevitably generate a certain size jump between the fixed feed port 6.
  • the embodiment At least one bearing 12 is provided at the junction of the feed housing 5 and the feed port 6, and at least one section of the two-stage feed housing may also allow for a limited amount of floating in three dimensions to ensure fit tolerances between the two segments. .
  • a sealing plate 8 covering the opening of the end of the feed casing 5 is provided in the pot body 1, and the limiter is fixed to the outside of the end cover of the pot body 1, the limit in this embodiment.
  • the utility model comprises two cylinders 9, which apply a pulling force to the sealing plate 8 opposite to the feeding direction to ensure that the sealing plate 8 is tightly pressed against the end opening of the feeding casing 5, such a structure is In order to press the sealing plate 8 tightly against the end opening of the feed casing 5 due to the high pressure formed by the cooking action of the cooking device, the pressure inside the pan 1 is prevented from leaking out, and the cooking effect is ensured.
  • the material placed from the feed port 6 can be pressed and pushed forward along the feed casing 5, thereby connecting the feed casing 5 to the pot body 1.
  • a high-density material block is formed, and the sealing plate 8 disposed in the pot body 1 and covering the opening of the end of the feeding shell 5 acts on the material block in the opposite direction under the action of the cylinder 9, until the material block is in progress.
  • the sealing plate 8 is pushed away into the pot body 1 by the action of the material spiral 7.
  • the force applied to the sealing plate 8 can also come from the oil cylinder, and the oil pump that powers the cylinder is fixed to the pot body 1 to rotate synchronously.
  • the discharging device in this embodiment comprises a slurry discharging pipe 3 which protrudes into the pot body 1.
  • the end of the slurry discharging pipe 3 is located at the lowest end of the pan body 1, and is cooked under the high pressure condition in the pan body 1.
  • the papermaking slurry is slowly discharged from the slurry discharge pipe 3.
  • the cooking device in this embodiment can adopt two structural forms, one is as shown in FIG. 1, and an inlet pipe 13 is introduced into the pot body 1, and high temperature and high pressure steam is introduced into the inlet pipe 13 through the high temperature and high pressure steam.
  • Cooking, in this case, the inlet pipe 13 and the liquid chemical inlet pipe 4 can be used together with a pipe, that is, the inlet pipe 13 not only introduces steam into the body 1, but also feeds the liquid.
  • Another steaming device has a structural form in which a jacket is added to the outer layer of the pot body 1, the jacket is filled with heat-conducting oil, and a heat-conducting oil outlet for heat-conducting oil flowing out after heat transfer is opened on the jacket, and the heat-conducting oil is used for the pot.
  • the slurry in the body 1 is cooked, and this structure can avoid excessive moisture in the slurry in the pot body 1 to ensure the cooking effect.
  • a plurality of lifting plates may be added to the inner wall of the pot body 1, and the lifting plates are arranged in sections in the axial direction of the pot body 1, and the adjacent two lifting plates are arranged.
  • An annular partition plate may also be provided.
  • the lifting plates can continuously turn the slurry in the pot body 1 to improve the mixing effect of the slurry.
  • at least the spiral pusher blade and the stirring tooth may be disposed on the inner wall of the feeding end of the pot body 1 to further improve the effect of stirring the material.
  • the manhole 16 provided on the pot body 1 can facilitate the maintenance of the pot body 1 by the worker, and the air compressor 15 can power the cylinder 9.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • the feeding device in this embodiment includes a feeder connected to the feed port 6, and the feeder functions to feed the inner cavity of the pan 1 and prevent the internal pressure of the pan 1 from leaking.
  • the feeder comprises a secondary feed screw 17 above the feed screw 7, the auxiliary feed screw 17 having a compression ratio, the feed port 6 being located on the auxiliary feed screw 17, A discharge plate 8 is provided at the discharge opening of the auxiliary feed screw 17 to apply a direction opposite to the feed direction.
  • the feed casing 5 in this embodiment is also divided into two sections, and the sealing device between the two sections has higher requirements than the sealing device of the embodiment, and it is not only required to achieve material sealing. There is also a need to achieve a gas and liquid seal.
  • the feed screw 7 and the auxiliary feed screw 17 are disposed in the same direction, wherein the auxiliary feed screw 17 has a compression ratio, and the auxiliary feed screw 17 is located between the feed port 6 and the fixed feed casing 5.
  • the sealing plate 8 in this embodiment is disposed at the discharge end of the auxiliary feed screw 17, and the stopper (i.e., the cylinder 9) is attached to the sealing plate 8, and a force opposite to the feeding direction is applied to the sealing plate 8. This can prevent the liquid medicine in the pot 1 from being ejected under high pressure conditions.
  • a sealing plate is also provided at the discharge opening of the feed screw 7 which is directly connected to the pot body 1 so as to achieve a supplementary sealing of the cooking pressure in the pot body 1 when the first sealing plate fails.
  • the remaining feeding device for example, the compartment is matched with the spiral feeding, the free falling body feeding material of the compartment matching material
  • the discharging device and the cooking device of the above structure can cooperate with the discharging device and the cooking device of the above structure to solve the corresponding
  • this part of the structure is a relatively common technical means in the field, and will not be described here.
  • the continuous horizontal cooking pot has the advantages of simple structure and convenient operation, and can effectively mix materials during the cooking of the papermaking pulp, thereby improving the cooking efficiency and the cooking effect.

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Abstract

一种连续卧式蒸煮锅,包括圆柱形的压力式锅体(1),该锅体可以以自身中心轴线为轴转动。锅体的另一端设有与其内腔相连通、可对锅体进行封闭的进料装置(2)。锅体另一端设有与其内腔相连通、位于锅体中心轴线上的出料装置(3)。连续卧式蒸煮锅还包括对锅体内物料进行蒸煮的蒸煮装置(13)。该连续卧式蒸煮锅结构简单,操作方便,有效混合物料。

Description

连续卧式蒸煮锅 技术领域
本发明涉及造纸机械设备技术领域,特别是指一种能够将草或木片与药液进行充分混合、蒸煮并得到造纸浆料的连续卧式蒸煮锅。
背景技术
蒸煮锅是造纸行业较为常用的设备之一,通常利用蒸煮锅将草或木片与药液在高温高压环境下进行充分的混合搅拌以及蒸煮得到造纸浆料,蒸煮锅的混合、蒸煮效果对浆料的生产效率以及后期纸的质量具有至关重要的影响。
现阶段,蒸煮锅大体分为立式蒸煮锅和卧式蒸煮锅两种结构形式。对于卧式蒸煮锅来说,较为常见的球形锅体能够实现造纸浆料的间歇式蒸煮,但不能实现造纸浆料的连续蒸煮,所以其效率要稍低一些,更为重要的是这种形式的蒸煮锅在进行气、液、固混合蒸煮时效果欠佳,例如在进行氧碱蒸煮时,液体与固体积聚在球形锅体的下部,而气体则始终积聚在球形锅体的上部,各种反应物之间无法进行有效、充分的混合,导致蒸煮效果不佳;卧式蒸煮锅另一种较为常见的结构形式是多个(至少四个)横管式锅体相互串联形成一条蒸煮线,而为了保证蒸煮的效果,这些蒸煮锅需要依次上下布置,依靠横管式锅体内的搅龙以及浆料的自身重力实现连续蒸煮,这种形式的蒸煮锅,由于单个锅体的高度通常在一层楼高左右,所以存在诸多的缺陷:一是布置多个横管式锅体需要建造相应的楼层,建筑造价较高;二是每一层的横管式锅体都需要单独的动力系统提供动力,整体动力消耗较高;三是所有的搅龙只能单纯地推动浆料向前移动,而无法对锅体内的浆料进行充分的混合,也不适合氧碱蒸煮等形式。对于立式蒸煮锅来说,首先其大多只能进行造纸浆料的间歇式蒸煮,蒸煮效率较低;其次,由于固液混合物通常在下,而气体在上,立式蒸煮锅也无法实现有效、充分的混合与蒸煮,最终的蒸煮效果也不佳。
发明内容
本发明提出一种连续式的且蒸煮锅锅体可转动的蒸煮器,能够提高蒸煮匀度、降低液比且特别适用于气相蒸煮。
本发明的技术方案是这样实现的:连续卧式蒸煮锅,包括圆柱形的压力式锅体,所述锅体可以以自身中心轴线为轴转动,所述锅体的一端设有与其内腔相连通、可对所述锅体进行封闭的进料装置,另一端设有与其内腔相连通、位于所述锅体中心轴线上的出料装置;
还包括对所述锅体内的物料进行蒸煮的蒸煮装置。
作为一种优选的实施方式,所述进料装置至少分为相互连通的两段进料外壳,一段进料外壳与所述锅体的内腔相连通并与所述锅体同轴、同步转动,另一段进料外壳相对固定并连接进料口,转动的一段与固定的一段之间设置有密封装置。
作为一种优选的实施方式,所述进料装置还包括设置于所述进料外壳内的进料螺旋,所述进料螺旋与所述锅体的中心轴线相重合,所述进料螺旋与所述锅体相对转动。
作为一种优选的实施方式,所述锅体内设有覆盖所述进料外壳端部开口的密封板,所述锅体的端盖外部还固定有限位器,所述限位器对所述密封板施加与进料方向相反的拉力。
作为一种优选的实施方式,所述进料螺旋带有压缩比,所述进料外壳上开有若干滤孔;
所述进料外壳的外周罩有与所述进料口固定连接的集水外壳,所述集水外壳的下表面倾斜设置,其最低端处开有排水口。
作为一种优选的实施方式,所述进料外壳与所述进料口的连接处设有用于消除所述锅体跳动的轴承。
作为一种优选的实施方式,所述进料外壳连接可对所述锅体内腔供料并可防止所述锅体内压外泄的喂料器,所述喂料器连接所述进料口。
作为一种优选的实施方式,所述锅体的内壁上还设置有多个提升板,所述提升板在所述锅体的轴向上分段设置,相邻的两个提升板之间设有圆环形隔板。
作为一种优选的实施方式,至少在所述锅体的进料端内壁上设有螺旋推料叶片和搅拌齿。
作为一种优选的实施方式,所述喂料器包括位于所述进料螺旋上方的辅进料螺旋,所述辅进料螺旋带有压缩比,所述进料口位于所述辅进料螺旋上,所述辅进料螺旋的出料口处设有可对物料施加与进料方向相反的密封板。
采用了上述技术方案后,本发明的有益效果是:该连续卧式蒸煮锅通过卧式锅体的自身转动能够实现内腔内的物料充分混合,同时,通过进料装置排入锅体内的混合物在蒸煮装置的作用下实现充分反应,最终制得的造纸浆料在锅体内高压条件下自出料装置排出,这种结构形式的连续卧式蒸煮锅不仅能够实现造纸浆料的连续蒸煮,提高蒸煮的效率,而且能够充分有效地实现物料与药液的的充分混合,提高蒸煮的效果。
将进料外壳设置为两段,一段进料外壳与锅体的内腔相连通并与锅体同轴、同步转动,另一段进料外壳相对固定并连接进料口,转动的一段与固定的一段之间设置有密封装置,这样能够防止锅体内的高压外泄。
进料螺旋在旋转时,能够将从进料口放入的物料予以挤压并沿进料外壳向前推送,从而在进料外壳与锅体的连接处形成高密度的物料块,而设置在锅体内的、覆盖在进料外壳端部开口的密封板在限位器的作用下对物料块形成反方向的作用,直至物料块在进料螺旋的作用下将密封板推开进入锅体内,在这个过程中,锅体内因蒸煮装置的蒸煮作用形成的高压会将密封板紧紧地压在进料外壳的端部开口上,防止锅体内的压力外泄,保证蒸煮的效果。
在进料外壳上开设多个滤孔能够使进料螺旋旋转挤压物料块时,将物料中的水分挤压出来,进而从滤孔中流至罩在外面的集水外壳上,最终从排水口排出,防止物料中的部分水分进入锅体内。
对于蒸煮装置来说,利用进汽管向锅体内通入高温高压蒸汽可以,在锅体外设置夹层,通过导热油进行加热也可以,而且后者能够避免向锅体内的浆料掺入过多的水分,保证蒸煮的效果。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案,下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本发明的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动性的前提下,还可以根据这些附图获得其他的附图。
图1为本发明一种实施例的结构示意图;
图2为图1中A-A处的剖视示意图;
图3为图1中的B向示意图;
图4为图1中C处的局部放大示意图;
图5为图1中D处的局部放大示意图;
图6为本发明另一种实施例的结构示意图;
图中:1-锅体;2-进料装置;3-出浆管;4-药液进管;5-进料外壳;6-进料口;7-进料螺旋;8-密封板;9-气缸;10-集水外壳;11-排水口;12-轴承;13-进汽管;14-垫板;15-空压机;16-人孔;17-辅进料螺旋。
具体实施方式
下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
实施例一:
如图1所示,为本发明连续卧式蒸煮锅的一种实施例,该蒸煮锅首先包括一个圆柱形的锅体1,该锅体1可水平放置,也可倾斜设置,图示的进料端(图示右端)的高度要高于出料端(图示左端)的高度,在锅体1的端部下方可设置垫板14,以便根据需要随时调节锅体1的倾斜角度。当然,锅体还可以设计成正锥形(进料头小,出料头大);也可以设计成倒锥形;还可以设计成椭圆柱体(中间大,两头小)型或两头小中间大的两个圆锥体的组合;为了改善锅体的受力状况,锅体的至少一头可以设计成半圆形,以上不同的锅体形式可以适合不同的蒸煮工艺要求,均在本技术的保护范围之内。
该连续卧式蒸煮锅与现有技术中的蒸煮锅不同之处在于:该蒸煮锅的锅体1是可以沿自身中心轴线为轴进行转动的,这样能够非常好的进行物料的混合。该蒸煮锅大致包括进料装置、出料装置、蒸煮装置几部分,下面就这几部分的结构做详细描述。
如图1、3、4和5所示,该实施例的进料装置2首先包括一个进料口6,该进料口6是固定不动的,该进料口6连接一个进料外壳5,该进料外壳5包括相互连通的两段,而且这两段进料外壳5之间是设有密封装置的,靠近进料口6的一段是与进料口6之间相固定的,而靠近锅体1的一段是与锅体1的内腔相连通的,并且这一段进料外壳5与锅体1之间同步转动,随锅体转动的进料外壳5和相对固定的进料外壳5的分界点最好在靠近进料口6的螺旋非压缩段,这样可以使密封装置的设置非常简单,仅仅需要使转动的进料外壳和固定的进料外壳具有接触面即可。在进料外壳5内设置有一个进料螺旋7(即搅龙),该进料螺旋7与锅体1的中心轴线相重合,进料螺旋7在动力机构的带动下转动,从而将自进料口6投入进去的物料沿进料外壳5推送至锅体1内,而且进料螺旋7与锅体1之间是相对转动的,在该实施例中,进料螺旋7选用的是带有压缩比的进料螺旋,即进料螺旋7的直径沿着物料的运动方向逐渐缩小,相应的,进料外壳5的径向尺寸沿着物料的运输方向也逐渐缩小,这样的好处是能够将物料不断挤压形成高密度的物料块,进而将物料中掺杂的部分水分挤压出来。另外,为了收集这部分被挤压出来的水分,在进料外壳5上开设若干的滤孔,即将进料外壳5变为滤板,同时在进料外壳5的外周罩一个集水外壳10,该集水外壳10是与进料口6之间固定连接的,而且集水外壳10的下表面倾斜设置,在其最低端还设有排水口11。
对于要通入锅体1内进行反应的药液来说,可在进料螺旋7的中间轴上开设一根通道,形成药液进管4,直接将药液从此处通入锅体1内,当然也可将药液与物料掺杂在一起,一起从进料口6投入进去,当然还可以采取其他的方式,下文中即描述了另外一种向锅体1内通入药液的结构形式。
一般来说,锅体1的直径通常在2M左右,长度在10M左右,其转动时必然会与固定的进料口6之间产生一定的尺寸跳动,为了消除此跳动,该实施例 在进料外壳5与进料口6的连接处设置了至少一个轴承12,两段进料外壳的至少一段还可以允许在三维方向上作有限度的浮动,以确保两段之间的配合公差。
如图1、2和5所示,在锅体1内设有覆盖进料外壳5端部开口的密封板8,锅体1的端盖外部还固定有限位器,此实施例中的限位器包括两个气缸9,这两个气缸9对密封板8施加一个与进料方向相反的拉力,以保证密封板8紧紧地压在进料外壳5的端部开口,这样的结构形式是为了使锅体内因蒸煮装置的蒸煮作用形成的高压将密封板8紧紧地压在进料外壳5的端部开口上,防止锅体1内的压力外泄,保证蒸煮的效果。当带有压缩比的进料螺旋7在旋转时,能够将从进料口6放入的物料予以挤压并沿进料外壳5向前推送,从而在进料外壳5与锅体1的连接处形成高密度的物料块,而设置在锅体1内的、覆盖在进料外壳5端部开口的密封板8在气缸9的作用下对物料块形成反方向的作用,直至物料块在进料螺旋7的作用下将密封板8推开进入锅体1内。当然,对密封板8所施加的力还可来自油缸,为油缸提供动力的油泵固定在锅体1上同步转动。
该实施例中的出料装置包括一根伸入锅体1内的出浆管3,该出浆管3的末端位于锅体1的最低端,在锅体1内的高压条件下,蒸煮形成的造纸浆料会从出浆管3慢慢排出。
该实施例中的蒸煮装置可选用两种结构形式,一种是如图1所示,向锅体1内通入一根进汽管13,通过向进汽管13内通入高温高压蒸汽进行蒸煮,这种情况下,可将进汽管13与药液进管4同用一根管道,即进汽管13不仅向锅体1内通入蒸汽,也通入药液。
另一种蒸煮装置的结构形式是在锅体1的外层增设一个夹套,夹套内充满导热油,在夹套上开设供传热后导热油流出的导热油出口,利用导热油对锅体1内的浆料进行蒸煮,这种结构形式能够避免向锅体1内的浆料中掺入过多的水分,保证蒸煮的效果。
为了提高锅体1内物料的反应混合效果,在锅体1的内壁上还可增加多个提升板,这些提升板在锅体1的轴向上分段设置,相邻的两个提升板之间还可设置圆环形隔板,在锅体1旋转时,这些提升板可将锅体1内的浆料不断地进行翻动提升,提高浆料的混合效果。另外,还可至少在锅体1的进料端内壁上还可设置螺旋推料叶片和搅拌齿,进一步提高搅拌物料的效果。
锅体1上设置的人孔16能够方便工作人员对锅体1进行检修,空压机15能够为气缸9提供动力。
实施例二:
如图6所示,为本发明连续卧式蒸煮锅的另一种实施例,该实施例与实施例一的区别在于进料装置部分,其余相同的结构(例如出料装置和蒸煮装置)在图中简略示出,该实施例中的进料装置包括连接进料口6的喂料器,喂料器的作用是对锅体1内腔供料并可防止锅体1的内压外泄,该喂料器包括位于所述进料螺旋7上方的辅进料螺旋17,所述辅进料螺旋17带有压缩比,所述进料口6位于所述辅进料螺旋17上,所述辅进料螺旋17的出料口处设有可对物料施加与进料方向相反的密封板8。
当然,该实施例中的进料外壳5也是分为两段的,这两段之间的密封装置相对于实施例一种的密封装置来说具有更高的要求,不仅需要实现物料的密封,而且需要实现气体和液体的密封。
而且进料螺旋7和辅进料螺旋17是同向设置的,其中,辅进料螺旋17带有压缩比,辅进料螺旋17位于进料口6与固定的进料外壳5之间。而该实施例中的密封板8则设置在辅进料螺旋17的出料端,限位器(即气缸9)连接在密封板8上,对密封板8施加一个与进料方向相反的力,这样能够防止锅体1内药液在高压条件下喷出。
当然,在与锅体1直连的进料螺旋7的出料口处也设置有一个密封板,以使第一道密封板失效时实现对锅体1内蒸煮压力的补充密封。
该实施例中的其余结构与实施例一种的大致相同,在此不再赘述。
对于本发明的连续卧式蒸煮锅而言,其余的进料装置(例如隔仓配合螺旋进料、隔仓配合物料的自由落体进料)配合上述结构的出料装置、蒸煮装置也可解决相应的技术问题并达到相应的技术效果,此部分结构均为本领域较为常见的技术手段,在此也不再赘述。
该连续卧式蒸煮锅结构简单,操作方便,在进行造纸浆料蒸煮时能够有效地将物料进行混合,提高蒸煮的效率和蒸煮效果。
以上所述仅为本发明的较佳实施例而已,并不用以限制本发明,凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。

Claims (10)

  1. 连续卧式蒸煮锅,包括圆柱形的压力式锅体,其特征在于:所述锅体可以以自身中心轴线为轴转动,所述锅体的一端设有与其内腔相连通、可对所述锅体进行封闭的进料装置,另一端设有与其内腔相连通、位于所述锅体中心轴线上的出料装置;
    还包括对所述锅体内的物料进行蒸煮的蒸煮装置。
  2. 如权利要求1所述的连续卧式蒸煮锅,其特征在于:所述进料装置至少分为相互连通的两段进料外壳,一段进料外壳与所述锅体的内腔相连通并与所述锅体同轴、同步转动,另一段进料外壳相对固定并连接进料口,转动的一段与固定的一段之间设置有密封装置。
  3. 如权利要求2所述的连续卧式蒸煮锅,其特征在于:所述进料装置还包括设置于所述进料外壳内的进料螺旋,所述进料螺旋与所述锅体的中心轴线相重合,所述进料螺旋与所述锅体相对转动。
  4. 如权利要求3所述的连续卧式蒸煮锅,其特征在于:所述锅体内设有覆盖所述进料外壳端部开口的密封板,所述锅体的端盖外部还固定有限位器,所述限位器对所述密封板施加与进料方向相反的拉力。
  5. 如权利要求3所述的连续卧式蒸煮锅,其特征在于:所述进料螺旋带有压缩比,所述进料外壳上开有若干滤孔;
    所述进料外壳的外周罩有与所述进料口固定连接的集水外壳,所述集水外壳的下表面倾斜设置,其最低端处开有排水口。
  6. 如权利要求2所述的连续卧式蒸煮锅,其特征在于:所述进料外壳与所述进料口的连接处设有用于消除所述锅体跳动的轴承。
  7. 如权利要求2所述的连续卧式蒸煮锅,其特征在于:所述进料外壳连接可对所述锅体内腔供料并可防止所述锅体内压外泄的喂料器,所述喂料器连接所述进料口。
  8. 如权利要求1所述的连续卧式蒸煮锅,其特征在于:所述锅体的内壁上还设置有多个提升板,所述提升板在所述锅体的轴向上分段设置,相邻的两个提升板之间设有圆环形隔板。
  9. 如权利要求1所述的连续卧式蒸煮锅,其特征在于:至少在所述锅体的进料端内壁上设有螺旋推料叶片和搅拌齿。
  10. 如权利要求7所述的连续卧式蒸煮锅,其特征在于:所述喂料器包括位于所述进料螺旋上方的辅进料螺旋,所述辅进料螺旋带有压缩比,所述进料口位于所述辅进料螺旋上,所述辅进料螺旋的出料口处设有可对物料施加与进料方向相反的密封板。
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