WO2014190693A1 - 大尺寸压滤板 - Google Patents

大尺寸压滤板 Download PDF

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Publication number
WO2014190693A1
WO2014190693A1 PCT/CN2013/087835 CN2013087835W WO2014190693A1 WO 2014190693 A1 WO2014190693 A1 WO 2014190693A1 CN 2013087835 W CN2013087835 W CN 2013087835W WO 2014190693 A1 WO2014190693 A1 WO 2014190693A1
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WO
WIPO (PCT)
Prior art keywords
filter
plate
plate body
filter press
outer ring
Prior art date
Application number
PCT/CN2013/087835
Other languages
English (en)
French (fr)
Inventor
庞仲达
Original Assignee
佛山市金凯地过滤设备有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 佛山市金凯地过滤设备有限公司 filed Critical 佛山市金凯地过滤设备有限公司
Priority to US14/893,953 priority Critical patent/US20160121241A1/en
Priority to JP2016512195A priority patent/JP6134059B2/ja
Priority to DE112013007120.7T priority patent/DE112013007120B4/de
Publication of WO2014190693A1 publication Critical patent/WO2014190693A1/zh

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D25/00—Filters formed by clamping together several filtering elements or parts of such elements
    • B01D25/12—Filter presses, i.e. of the plate or plate and frame type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D25/00—Filters formed by clamping together several filtering elements or parts of such elements
    • B01D25/12—Filter presses, i.e. of the plate or plate and frame type
    • B01D25/164—Chamber-plate presses, i.e. the sides of the filtering elements being clamped between two successive filtering plates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D25/00—Filters formed by clamping together several filtering elements or parts of such elements
    • B01D25/12—Filter presses, i.e. of the plate or plate and frame type
    • B01D25/21—Plate and frame presses
    • B01D25/215—Construction of the filter plates, frames

Definitions

  • the invention relates to the technical field of presses, in particular to a large-sized filter press plate.
  • the filter press is an industrial equipment commonly used in the field of environmental protection technology.
  • the sludge-doped sewage is separated into relatively dry materials and relatively clean water after passing through a filter press.
  • the volume of the material is greatly reduced, which is convenient for disposal by burial or incineration, and the water is separated by various solid components, or directly recycled, or further processed for recycling, and direct discharge.
  • Commonly used filter presses include components such as frames, filter plates, filter plates, and filter cloth.
  • the filter plates When in use, the filter plates are pressed together and pressed against each other, and the filter cloth is placed over the surface of the filter plate, and a closed space is formed between the filter cloths of adjacent filter plates.
  • the sewage enters the closed space between the various filter plates through the central hole of the filter press plate. Due to the strong pressure of the sewage, the water-permeable filter cloth enters the water-permeable hole opened inside the filter plate to discharge the filter press, but the sludge The filter cloth cannot be permeable, so it accumulates in the enclosed space between the filter cloths of adjacent filter plates.
  • the filter press can turn a huge volume of sewage into a mud cake with a reduced volume, which greatly reduces the cost of sewage treatment, and has very good economic and social benefits.
  • the former refers to how many tons of sewage can be filtered in a certain period of time, and the latter refers to the mud cake that is finally filtered. How low the water content is.
  • Everything about the filter press is a collection of the above problems.
  • the pressure filter plate of the prior art filter press has a diameter of less than 0.6 m, and is made into a larger pressure.
  • the filter plate can filter out more sludge at one time and double the working efficiency.
  • the diameter of the filter plate becomes larger, two problems arise. First, as the diameter becomes larger, the circumference of the filter press plate also becomes longer, and in the state of the filter press, the sealing between adjacent filter plates becomes more difficult. Especially when the mud cake falls off, there are always some mud cakes that will fall on the seals of the adjacent filter plates.
  • Each filter press has more than a dozen pressure filter plates, which are large in size. It is impossible to artificially apply mud every time.
  • the pressure applied by the filter plate is equal to the pressure of the sewage multiplied by the area of the filter plate. As the diameter of the filter plate becomes larger, the pressure of the sewage received by the filter plate becomes correspondingly larger. Therefore, in the process of pressure filtration, the pressure filter plate is shaken by the adjacent sides of the sewage, and if the strength of the pressure filter plate is insufficient, it will be easily broken and shorten the service life of the filter plate.
  • An object of the present invention is to provide a filter press plate which can be made into a larger size, which can improve the working efficiency of the sewage filter press of the filter press.
  • the present invention employs the following technical solutions.
  • a large-sized filter press plate is provided with closed ribs on the outer ring positions of the two sides of the plate body. When the two filter plates are abutted, a gap is formed between the ribs on both sides of the plate body.
  • the top surface of the rib of one side of the plate body is a flat surface, and the rib of the other side of the plate body is a apex or a fox top.
  • the top surface is disposed on the inner ring, and the apex or the curved top is disposed on the outer ring.
  • the gap has a width of 3 - 5 ⁇ .
  • Both sides of the plate body are covered with columnar protrusions in the range of the ribs, and the top surfaces of all the columnar protrusions are flush with each other, and the base surface of the plate body which grows out of the columnar protrusion is in the outer ring.
  • the thickness of the inner ring is thin, the height of the columnar protrusions located on the outer ring is small, and the height of the columnar protrusions located in the inner ring is large.
  • the two sides of the plate body are provided with support columns with circumferential hooks. When the two filter plates are abutted, the corresponding support columns of the plate body abut each other.
  • the support columns are divided into two groups according to the circumference of the distribution in the inner ring or the outer ring, four in the inner ring, each supporting column has a diameter of 30-50 ⁇ ; and one set in the outer ring is six. Each support column has a diameter of 50-7 Omm.
  • the diameter of the distribution circumference of the support column on the outer ring is 40-60% of the diameter of the filter plate, and the diameter of the distribution circumference of the support column at the inner ring is 20 of the diameter of the filter plate - 30%.
  • the pressure filter plate has a circular shape and a diameter of 0. 6m-l. 2m, the base surface of the filter plate has a thickness of 30-40 ⁇ , and the filter plate has a maximum thickness of 50-70 mm.
  • the present invention provides a closed rib structure on the front and back sides of the plate body, and a space of a certain size is formed between the front and back ribs when the adjacent filter plates are pressed. Therefore, if any material remains in the seal of the filter plate, when the filter plates are pressed against each other, the gap can accommodate a certain amount of residual material, thereby preventing the residual material from affecting the seal of the filter plate.
  • FIG. 1 is a schematic view showing the structure of a plurality of filter press plates of the present invention in abutment.
  • Fig. 2 is a partially enlarged structural view of a of Fig. 1, showing the structure in the vicinity of the void 2.
  • Figure 3 is a partially enlarged schematic view of the portion b of Figure 1, showing the structure of the base surface 14 and the columnar projection 13 of the filter plate.
  • Figure 4 is a schematic view showing the structure of the front side of the hungry filter plate of the present invention.
  • Plate body 1 top surface 11 1 , apex or curved top 121 , void 2 , columnar protrusion 13 , base surface 14 , support column 15 , diameter m of the filter plate, thickness n of the base surface of the filter plate, pressure The maximum thickness X of the filter plate and the width y of the gap 2.
  • the outer ring positions of the two sides of the plate body 1 are respectively provided with closed convex portions.
  • the convex surfaces of the plate body 1 are convex.
  • a gap 2 is formed between the ribs.
  • the plate body 1 may be circular or square. If it is circular, the rib is a circular boss. If it is a square plate, the rib is a square boss.
  • the ribbed closure means that the ribs are abutment that surrounds the outer circumference of the plate body 1 of the filter plate 1 end to end.
  • the adjacent filter press plates are provided with a rubber ring for sealing at the outer ring positions on both sides, or a structure in which the front surface is an annular protrusion and the reverse surface is a corresponding annular groove.
  • These structures appear to be tightly sealed but do not meet actual conditions. Because the filter cake falls off, it is inevitable that some material will remain in the seal of the pressure filter plate, causing the residual material to be pressed between the two filter plates when the filter plate is pressed next time, so that the seal fails.
  • the invention is deliberately designed to provide a closed rib structure on the front side and the back side of the plate body 1, and when the adjacent filter plate is pressed, a certain size gap is formed between the front and back ribs. 2 ( Figure 2). Therefore, if materials remain in the seal of the filter plate, when the filter plates are pressed against each other, the gap 2 can accommodate a certain amount of residual material, thereby preventing the residual material from affecting the seal of the filter plate.
  • top surface 111 of the rib of one side of the plate body 1 is a flat surface
  • the rib of the other side of the plate body 1 is a pointed top or a curved top 121.
  • the top surface 111 is a flat surface with a stronger sealing effect, and its contact with the opposite surface of the pressure filter plate is in surface contact; the structure of the apex or curved top 121 facilitates pushing the material from the contact position of the adjacent plate 1 Open, avoid pinching the material and causing leakage.
  • the structure actually forms a double-layer sealing structure, which enhances the sealing performance.
  • the front ribs and the ribs on the front side form a line of defense for the inner ring and the outer ring, and a gap between the two lines of defense for accommodating residual material 2 .
  • the top surface 111 is disposed on the inner ring, and the apex or curved top 121 is disposed on the outer ring.
  • the contact between the top surface 111 and the adjacent plate surface 1 is in surface contact, and the sealing ability is stronger, so the inner ring is first subjected to the pressure of the sewage.
  • the apex or curved top 121 is located on the outer ring for further sealing and is subjected to less effluent pressure and a secondary sealing effect.
  • the width y of the void 2 is 3-5 mm.
  • the width should not be too large. If the structure is too strong, the structural strength is insufficient, resulting in poor sealing performance; it should not be too small, too small to be easily filled by the accumulated material, resulting in a decrease in sealing performance.
  • the width y of the void 2 refers to the difference between the innermost radius of the void 2 and the outermost radius, as shown in FIG.
  • the two faces of the plate body 1 are evenly covered with the columnar protrusions 13 in the range of the ribs (for the sake of clarity, FIG. 4 does not depict the columnar protrusions 13. 3. As shown in Fig.
  • all of the columnar protrusions 1 3 The top surface is flush with each other, and the base surface 14 of the plate body 1 that grows the columnar protrusions 13 is thicker in the outer ring and thinner in the inner ring, and the columnar protrusions 13 located on the outer ring are smaller in height and located inside.
  • the columnar protrusions 13 of the ring are relatively tall.
  • the top surfaces of the columnar protrusions 13 are flush with each other, so that the material between the filter plates can be pressed into the same thickness of dry material, and such a structure is convenient for pressing. The material is easy to fall off.
  • the two sides of the plate body 1 are provided with support columns 15 which are evenly distributed around the circumference. When the two filter plates are abutted, the corresponding support columns 15 of the plate body 1 are tight.
  • the support column 15 protects the large-sized filter plate from the strong pressure of the sewage, and the filter plate does not shake from side to side.
  • the support columns 15 are divided into two groups according to the circumference of the distribution in the inner ring or the outer ring, four in the inner ring, each of the support columns 15 having a diameter of 30-50 mm; and one set on the outer ring being six Each support column 15 has a diameter of 50-70 mm.
  • the diameter of the distribution circumference of the support column 15 at the outer ring is 40-60% of the diameter of the filter plate, and the diameter of the distribution circumference of the support column 15 at the inner ring is the diameter of the filter plate 20-30%.
  • the support column 15 serves to prevent the swing of the filter plate from being excessively large when the material pressure is too large.
  • the position where the most easy swing is the middle position of the filter plate, so that a set of support columns 15 can be respectively disposed on the inner ring and the outer ring. The sway of the filter press plate during the press filtration process is more effectively reduced.
  • the filter plate is circular, and the diameter m is 0. 6m-1. 2m.
  • the thickness n of the base surface of the filter plate is 30-40mm, and the maximum thickness x of the filter plate is 50-70 ⁇ .
  • the maximum thickness x of the plate body 1 refers to the maximum distance to the top surface of the rib of the front and back faces of the plate body 1.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filtration Of Liquid (AREA)
  • Filtering Materials (AREA)

Abstract

一种压滤板，其板体（1）的两面的外圈位置分别设置有封闭的凸棱，两个所述压滤板靠紧时，板体（1）两面的凸棱之间形成空隙（2）。板体（1）一面的凸棱的顶面（111）为平面，板体（1）另一面的凸棱为尖顶或弧面顶（121）。两个压滤板靠紧时，相邻的两个压滤板的顶面（111）和尖顶或弧面顶（121）之间形成的空隙（2）是封闭的。顶面（111）设置于内圈，尖顶或弧面顶（121）设置于外圈。空隙（2）的宽度（y）为3-5mm。当有物料残留在压滤板的密封处，当压滤板相互压紧时，空隙（2）能够容纳一定的残留物料，从而避免残留物料影响压滤板的密封。

Description

大尺寸压滤板 本专利申请要求于 2013年 5月 28 日提交的、 申请号为 201310203763.1、 申请人为佛山市金凯地过滤设备有限公司、 发明名称为 "大尺寸压滤板" 的中 国专利申请的优先权， 该申请的全文以引用的方式并入本申请中。
技术领域
本发明涉及压榨机技术领域， 尤其涉及一种大尺寸压滤板。
背景技术
压滤机是在环保技术领域中常用的一种工业设备， 掺杂污泥的污水经过压 滤机之后被分离成比较干燥的物料和比较干净的水。 物料体积大为缩小， 方便 通过掩埋或者焚烧等形式进行处理， 而水则由于分离了各种固态成分， 或者直 接回收利用， 或者进行进一步处理后回收利用， 以及直接排放等。
常用的压滤机包括机架、 压滤板、 压滤板的驱动设备和滤布等部件。 使用 时， 压滤板被挤压在一起， 相互靠紧， 滤布套在压滤板表面， 相邻压滤板的滤 布之间形成封闭空间。 污水经过压滤板的中心孔进入到各个压滤板之间的封闭 空间内， 由于污水的强大压力， 水透过滤布进入到压滤板内部开设的透水孔里 排出压滤机， 但污泥无法透过滤布， 故积累在相邻压滤板的滤布之间的封闭空 间。 污泥沉积到达一定量后， 松开压滤板， 则积累的污泥像一块一块的饼一样 从压滤板的滤布之间掉落。 由于目前节能环保日益成为社会关注的热点问题， 压滤机能够将体积巨大的污水变成体积缩小的泥饼， 极大地减少了企业处理污 水的成本， 具有非常好的经济效益和社会效益。 根据上述整个过程可知， 压滤 机的工作效率和工作效果是最重要的两个因素， 前者指的是一定时间内可以压 滤多少吨污水， 后者指的是最终压滤出的泥饼的含水率有多低。 一切关于压滤 机的改进都是上述问题的集合。
现有技术中的压滤机的压滤板直径都在 0. 6m以下， 支如制成更大尺寸的压 滤板， 则可以一次压滤出更多的污泥， 成倍提高工作效率。 但是随着压滤板直 径的变大， 有两个问题随之而来。 首先， 由于直径变大， 因此压滤板的周长也 随之变长， 压滤状态时， 相邻压滤板之间的密封变得更加困难。 尤其是泥饼脱 落时， 总有一些泥饼会落在相邻压滤板的密封处， 每台压滤机有十几块压滤板， 尺寸又很大， 人工不可能每次都将泥饼清理干净， 于是下次压滤时， 相邻压滤 板可能无法严格密封， 从而污水带着污泥会直接从非密封处流走， 不会经过滤 布进行过滤。 其次， 压滤板承受的压力等于污水的压强乘以压滤板的面积，随着 压滤板直径变大， 压滤板承受的污水压力也相应变得更大。 所以， 在压滤的过 程中， 压滤板被相邻两侧的污水冲击得左右摇晃， 压滤板强度不够的话， 就会 容易破损， 缩短压滤板的使用寿命。 这两个问题是导致压滤板无法做的更大的 主要原因。
发明内容
本发明的目的在于提出一种能够制成更大尺寸的压滤板， 其可以提高压滤 机的污水压滤的工作效率。
为达此目的， 本发明采用以下技术方案。
一种大尺寸压滤板， 其板体的两面的外圈位置分别设置有封闭的凸棱， 两 个所述压滤板靠紧时， 板体的两面的凸棱之间形成空隙。
所述板体的一面的凸棱的顶面为平面， 所述板体的另一面的凸棱为尖顶或 狐面顶。
两个所述压滤板靠紧时， 相邻的两个压滤板的所述顶面和尖顶或弧面顶之 间形成空隙是封闭的。
所述顶面设置于内圈， 所述尖顶或弧面顶设置于外圈。
所述空隙的宽度为 3- 5匪。
所述板体的两面在凸棱内的范围里均勾布满柱状突起， 所有的所述柱状突 起的顶面相互平齐， 所述板体的长出所述柱状突起的基面在外圈较厚、 内圈较 薄， 位于外圈的所述柱状突起高度较小， 位于内圈的所述柱状突起高度较大。 所述板体的两面设置有圓周均勾分布的支撑柱， 两个所述压滤板靠紧时， 所述板体相对应的支撑柱相互抵紧。
所述支撑柱按照分布圓周位于内圈还是外圈分为两组， 位于内圈的一组为 四个， 每个支撑柱的直径为 30-50匪； 位于外圈的一组为六个， 每个支撑柱的直 径为 50-7 Omm。
位于外圈的所述支撑柱的分布圓周的直径为所述压滤板的直径的 40-60% , 位于内圈的所述支撑柱的分布圓周的直径为所述压滤板的直径的 20- 30%。
所述压滤板为圓形， 直径为 0. 6m-l . 2m, 压滤板的基面的厚度为 30-40匪， 压滤板的最大厚度为 50-70mm。
本发明在板体的正面和反面分别设置一个封闭的凸棱的结构， 并且当相邻 压滤板压紧时， 正面和反面的凸棱之间形成了一定尺寸的空隙。 所以， 若有物 料残留在压滤板的密封处， 当压滤板相互压紧时， 空隙能够容纳一定的残留物 料， 从而避免残留物料影响压滤板的密封。
附图说明
图 1是多个本发明的压滤板的实施例靠紧时的结构示意图。
图 2是图 1的 a处局部放大结构示意图， 表明了空隙 2附近的结构。
图 3是图 1的 b处局部放大结构示意图， 表明了压滤板的基面 14和柱状突 起 1 3的结构。
图 4是本发明饿压滤板的正面的结构示意图。
其中：
板体 1 , 顶面 11 1 , 尖顶或弧面顶 121 , 空隙 2 , 柱状突起 1 3 , 基面 14 , 支 撑柱 15 , 压滤板的直径 m, 压滤板的基面的厚度 n, 压滤板的最大厚度 X , 空隙 2的宽度 y。
具体实施方式
下面结合附图并通过具体实施方式来进一步说明本发明的技术方案。 如图 1至 3所示的本实施例的压滤板， 其板体 1的两面的外圈位置分别设 置有封闭的凸 两个所述压滤板靠紧时，板体 1的两面的凸棱之间形成空隙 2。 板体 1 可以为圓形也可以为方形， 若为圓形， 则凸棱是圓环形的凸台， 若为方 板， 则凸棱是方形的凸台。 凸棱的封闭指的是凸棱为首尾相接围绕所述压滤板 的板体 1 的外圈一周的环台。 现有技术中， 相邻的压滤板在两面的外圈位置设 置有用于密封的胶圈， 或者采取正面为环形突起， 反面为位置对应的环形凹坑 的结构。 这些结构看起来密封严格， 但却不符合实际工况。 因为滤饼脱落时， 难免会有部分物料残留在压滤板的密封处， 导致压滤板下次压紧时将残留的物 料也压紧在两个压滤板之间， 从而密封失效。 本发明开创性地设计了在板体 1 的正面和反面分别设置一个封闭的凸棱的结构， 并且当相邻压滤板压紧时， 正 面和反面的凸棱之间形成了一定尺寸的空隙 2 (如图 2 ) 。 所以， 若有物料残留 在压滤板的密封处， 当压滤板相互压紧时， 空隙 2 能够容纳一定的残留物料， 从而避免残留物料影响压滤板的密封。
进一步地， 所述板体 1的一面的凸棱的顶面 111为平面， 所述板体 1的另 一面的凸棱为尖顶或弧面顶 121。 顶面 111是平面， 具有更强的封闭作用， 他与 对面的压滤板的板面的接触为面接触； 尖顶或弧面顶 121 的结构便于将物料从 相邻板体 1的接触位置推开， 避免夹住物料导致泄漏。
两个所述压滤板靠紧时， 相邻的两个压滤板的所述顶面 111 和尖顶或弧面 顶 121之间形成空隙 2是封闭的。 本结构实际上形成了双层密封结构， 增强了 密封性能， 正面的凸棱和方面的凸棱形成内圈和外圈两道密封的防线， 在两道 防线之间为容纳残留物料的空隙 2。
所述顶面 111设置于内圈， 所述尖顶或弧面顶 121设置于外圈。 顶面 111 与相邻板面 1 的接触是面接触， 封闭能力更强， 所以在内圈， 首先承受污水的 压力。 尖顶或弧面顶 121 位于外圈， 起到进一步密封的作用， 受到的污水压力 较小， 承担次要的密封作用。
所述空隙 2的宽度 y为 3-5mm。 该宽度不可太大， 太大则结构强度不足， 导 致密封性能不好； 不可太小， 太小则容易被积存物料填满， 导致密封性能下降。 空隙 2的宽度 y, 指的是空隙 2的最内半径与最外半径的差值， 如图 2。 所述板体 1的两面在凸棱内的范围里均匀布满柱状突起 1 3 (为清晰起见， 图 4并未画满柱状突起 1 3。 如图 3 , 所有的所述柱状突起 1 3的顶面相互平齐， 所述板体 1的长出所述柱状突起 1 3的基面 14在外圈较厚、 内圈较薄， 位于外 圈的所述柱状突起 1 3 高度较小， 位于内圈的所述柱状突起 1 3高度较大。 柱状 突起 1 3的顶面相互平齐， 这样才能够将压滤板之间的物料压榨为相同厚度的干 燥物料， 而且这样的结构便于压榨之后的物料容易脱落。
所述板体 1的两面设置有圓周均匀分布的支撑柱 15 , 两个所述压滤板靠紧 时， 所述板体 1相对应的支撑柱 15相互 ·ί氏紧。 支撑柱 15能够保护大尺寸的压 滤板在承受污水的强大压力时， 压滤板不会左右摇晃。
所述支撑柱 15按照分布圓周位于内圈还是外圈分为两组， 位于内圈的一组 为四个， 每个支撑柱 15的直径为 30- 50mm; 位于外圈的一组为六个， 每个支撑 柱 15的直径为 50- 70mm。
位于外圈的所述支撑柱 15 的分布圓周的直径为所述压滤板的直径的 40-60% , 位于内圈的所述支撑柱 15 的分布圓周的直径为所述压滤板的直径的 20-30%。 支撑柱 15起到防止物料压力过大时压滤板的摆动过大的作用， 最容易 摆动的位置是压滤板的中部位置， 因此分别在内圈和外圈各设置一组支撑柱 15 能够更有效地减少所述压滤板在压滤过程中的晃动。
所述压滤板为圓形， 直径 m 为 0. 6m-1. 2m , 压滤板的基面的厚度 n 为 30-40mm, 压滤板的最大厚度 x为 50-70匪。 板体 1的最大厚度 x指的是给板体 1的正面和反面的凸棱的顶面的最大距离。
以上结合具体实施例描述了本发明的技术原理。 这些描述只是为了解释本 发明的原理， 而不能以任何方式解释为对本发明保护范围的限制。 基于此处的 解释， 本领域的技术人员不需要付出创造性的劳动即可联想到本发明的其它具 体实施方式， 这些方式都将落入本发明的保护范围之内。

Claims

权 利 要 求 书
1.一种大尺寸压滤板， 其特征在于： 其板体的两面的外圈位置分别设置有 封闭的凸棱， 两个所述压滤板靠紧时， 板体的两面的凸棱之间形成空隙。
2.根据权利要求 1 所述的大尺寸压滤板， 其特征在于： 所述板体的一面的 凸棱的顶面为平面， 所述板体的另一面的凸棱为尖顶或弧面顶。
3.根据权利要求 2 所述的大尺寸压滤板， 其特征在于： 两个所述压滤板靠 紧时， 相邻的两个压滤板的所述顶面和尖顶或弧面顶之间形成空隙是封闭的。
4.根据权利要求 3 所述的大尺寸压滤板， 其特征在于： 所述顶面设置于内 圈， 所述尖顶或弧面顶设置于外圈。
5.根据权利要求 1 所述的大尺寸压滤板， 其特征在于： 所述空隙的宽度为 3_5mm。
6.根据权利要求 1 所述的大尺寸压滤板， 其特征在于： 所述板体的两面在 凸棱内的范围里均匀布满柱状突起， 所有的所述柱状突起的顶面相互平齐， 所 述板体的长出所述柱状突起的基面在外圈较厚、 内圈较薄， 位于外圈的所述柱 状突起高度较小， 位于内圈的所述柱状突起高度较大。
7.根据权利要求 5 所述的大尺寸压滤板， 其特征在于： 所述板体的两面设 置有圓周均勾分布的支撑柱， 两个所述压滤板靠紧时， 所述板体相对应的支撑 柱相互抵紧。
8.根据权利要求 7 所述的大尺寸压滤板， 其特征在于： 所述支撑柱按照分 布圓周位于内圈还是外圈分为两组， 位于内圈的一组为四个， 每个支撑柱的直 径为 30-50mm; 位于外圈的一组为六个， 每个支撑柱的直径为 50-70mm。
9.根据权利要求 9 所述的大尺寸压滤板， 其特征在于： 位于外圈的所述支 撑柱的分布圓周的直径为所述压滤板的直径的 40-60% , 位于内圈的所述支撑柱 的分布圓周的直径为所述压滤板的直径的 20-30%。
10.根据权利要求 8所述的大尺寸压滤板，其特征在于：所述压滤板为圓形， 直径为 0. 6m-1. 2m , 压滤板的基面的厚度为 30-40匪， 压滤板的最大厚度为 50— 70匪。
PCT/CN2013/087835 2013-05-28 2013-11-26 大尺寸压滤板 WO2014190693A1 (zh)

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