WO2011097835A1 - 一种叠片式过滤器的滤芯装置 - Google Patents

一种叠片式过滤器的滤芯装置 Download PDF

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Publication number
WO2011097835A1
WO2011097835A1 PCT/CN2010/071035 CN2010071035W WO2011097835A1 WO 2011097835 A1 WO2011097835 A1 WO 2011097835A1 CN 2010071035 W CN2010071035 W CN 2010071035W WO 2011097835 A1 WO2011097835 A1 WO 2011097835A1
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filter
support frame
strip
pressure cap
spiral
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PCT/CN2010/071035
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English (en)
French (fr)
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黄虹宾
杨继跃
杨卫
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广东联塑科技实业有限公司
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Publication of WO2011097835A1 publication Critical patent/WO2011097835A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/44—Edge filtering elements, i.e. using contiguous impervious surfaces
    • B01D29/46—Edge filtering elements, i.e. using contiguous impervious surfaces of flat, stacked bodies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/18—Filters characterised by the openings or pores
    • B01D2201/184—Special form, dimension of the openings, pores of the filtering elements
    • B01D2201/186—Pore openings which can be modified

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  • the invention belongs to the field of component structures of laminated filters, and in particular to a filter device for a laminated filter.
  • Conventional filtration equipment generally uses filter filtration. Although it has a high filtration speed, the smaller particles and fibers in the water can still pass through the filter, and if the impurities are stuck or entangled on the filter screen during filtration, it is difficult to clean. Drop it.
  • the automatic disc filter fully inherits the advantages of the above filter.
  • the core of the disc filter is a filter strip.
  • the filter with this filtering principle is used for filtering and backwashing. Dynamically variable, it can improve the filtration performance, and can greatly reduce the amount of backwash water. Usually, the self-consumption water consumption is about 0.25%.
  • laminated filters in developed countries is quite common, and it is widely used for irrigation, wastewater treatment, sewage regeneration, municipal water supply, tap water because it can work accurately and stably under very demanding conditions and requires little maintenance. Plants, large power plants, chemical companies, and emergency response filtering.
  • the filter element of the commercially available laminated filter is basically composed of a lamination, a support frame, a cap spring mechanism, a backwashing water spray mechanism and a backstop mechanism.
  • the laminations are annular sheets on which the grooves passing through the center of the lamination or not passing through the center are distributed on the upper and lower surfaces of the lamination.
  • a plurality of laminations are bonded together, a plurality of intersections from the center of the outer lamination are formed between adjacent laminations, each intersection being equivalent to one node of the screen, so when water passes through the lamination filter When it is equivalent to passing through a multi-layer filter.
  • the backwashing water spraying mechanism is generally a square hollow cavity with a plurality of rows of nozzle holes.
  • the lamination stack is sleeved on the support frame and the upper end is pressed by a cap spring mechanism.
  • the main problem is the complexity of the structure.
  • the structure of patent number ZL200720119022.5 in order to backwash, a plurality of backwash nozzles are provided; patent number ZL200620023571.8 is provided with a recoil pipe, a recoil inlet, a hydrodynamic piston and a recoil hydraulic spray hole, The cleaning filter sets up a complex backwash mechanism.
  • Patent No. 94236652.5 the laminations of which are not the same diameter, are arranged in a pyramid shape from top to bottom. At present, the laminations are injection molded by injection molds. The number of laminations required for each filter exceeds 150.
  • the difference in lamination diameter means that more than 150 sets of molds are needed to make the laminations, or secondary processing will be used.
  • the injection molded laminates of the same diameter are cut into a plurality of laminations of different diameters, but this wastes a lot of material.
  • the filter element also has a common drawback that the laminate cannot be completely cleaned. The reason is that when some microorganisms grow on the surface of the laminate, a viscous substance is generated, and the adjacent laminations are bonded together. When backwashing, the water ejected from the orifices is difficult to bond together. The laminations are opened, causing the bonded laminations to lose their water function. When the number of laminated sheets bonded together is increased, the water passing area of the filter element is reduced, and the water resistance is increased, so that the amount of water and water pressure supplied to the downstream sprinkling (or drip) nozzle is reduced.
  • the filter element consists of a lamination and a support frame, without a cap spring mechanism, a backwash nozzle and a backstop mechanism.
  • a cap spring mechanism When rinsing, first loosen the pressure cap on the support frame to compress the lamination so that the lamination is loose, then pass water from the filter outlet pipe and rinse the lamination in reverse. After rinsing, tighten the lamination caps to fit the laminations together.
  • a large water pressure is required, which requires a large amount of water for reverse rinsing.
  • the loose laminations tend to partially overlap under the impact of water flow, so that scouring Not in place, affecting the flushing effect.
  • the object of the present invention is to overcome the deficiencies of the prior art and to provide a filter element device of a laminated filter which has a simple structure, is convenient to use, is easy to back flush, and is efficient in water saving during back flushing.
  • a filter device for a laminated filter comprising a filter strip, a support frame, a pressure cap, and a pressure cap adjustment mechanism, the filter strip being sleeved on the outside of the support frame, and the filter strip is provided with a strip-shaped sheet body having a filter groove on the surface
  • a continuous cylinder is formed by spiral winding, at least one end of which is coupled to the pressure cap and can be compressed inwardly or outwardly in the axial direction of the cartridge device under adjustment of the cap adjustment mechanism.
  • one end of the cylinder is fixed to the bottom of the support frame, and the other end is located at the top of the support frame, and is fixedly connected with the pressure cap.
  • the filter strip is formed by a ring along a spiral of equal diameter around an axis to form a filter strip having a certain thickness, a torus perpendicular to the axis perpendicular to the axis, on the torus There are filter tanks distributed.
  • the filter strip extends from the plurality of rings in the axial direction to form a cylindrical ring, all of which have the same outer diameter and the same inner diameter of all the rings.
  • the core of the present invention is to propose a spiral lamination.
  • the lamination of this structure does not need to be produced by an injection molding process, but an extrusion process.
  • In production from the extruder is a continuous spiral spiral around the axis and a flat section of the spiral filter, and then cut according to the required length and support frame, pressure cap and compression bolt Assembled into a filter element.
  • this production process can greatly improve the production efficiency, and there is no nozzle waste generated in the injection molding process, which greatly improves the material utilization rate; from the perspective of rinsing, the filter element of this structure can make each lamination Both filter surfaces can be flushed into place. And because the filter element can be rinsed in a container without having to use pressurized water for rinsing, the rinse water can be greatly saved.
  • Figure 1 is a schematic view showing the structure of a filter strip of the present invention
  • Figure 2 is a schematic view of the structure of the present invention.
  • Figure 3 is a schematic view showing the structure of the present invention under compression
  • Figure 4 is a schematic view showing the structure of the present invention in a backwash state.
  • the spiral wound filter strip structure of the present invention has a filter strip having a certain thickness formed by a circular ring along an equal diameter spiral around an axis. In the direction perpendicular to the axis, it is a torus perpendicular to the axis. A filter tank is distributed on the torus.
  • One of the main features of the filter rod is that the outer diameter and the inner diameter are the same in the axial direction, forming a cylindrical ring.
  • Another feature of the filter strip is that it can be elongated along the axial direction, so that each spiral piece The equidistant spacing is pulled apart; it can also be pressed in the axial direction so that each of the spiral pieces can be pressed without a gap.
  • FIG. 2 is a schematic structural view of the present invention, which is composed of an integral spiral filter strip 4, a support frame 3, a pressure cap 2, and a cap adjustment screw 1.
  • the filter strip 4 is placed outside the cylindrical support frame 3 and is pressed by the pressure cap 2 and the pressure cap adjustment screw 1 to form a hollow, cylindrical filter element.
  • the structure of the present invention in the backwash state is as follows.
  • the pressure cap adjusting screw 1 is loosened and the pressure cap 2 is pulled outward, the filter strip 4 is pulled apart, and the spiral of the filter strip is between Equidistant voids appear and the amount of spacing between the flights can be determined as needed.
  • the filter element can be cleaned at this time, and the filter strip can be cleaned by an automatic cleaning structure and method, or manually. When cleaning by hand, it is not necessary to use high-pressure water for rinsing, which greatly saves the water consumption of the rinsing filter.
  • the filter strip 4 In the filtering state, the filter strip 4 is in a compact state. In the flushing state, when the pressure cap 2 is released and the filter strip 4 is pulled apart, the adjacent spiral filter sheets are pulled apart, and there is still no sticking. A spiral filter that is combined. Under manual washing, it is not necessary to use pressurized water to rinse, and multiple filters can be placed in one container for rinsing.

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

Description

一种叠片式过滤器的滤芯装置
技术领域
本发明属于叠片式过滤器的部件结构领域，特别是涉及一种叠片式过滤器的滤芯装置。
背景技术
传统的过滤设备一般采用过滤网过滤，它虽然具有较高的过滤速度，但是水中较小的颗粒和纤维仍能穿过滤网，而且如果过滤时杂质卡在或缠绕在滤网上，则很难清洗掉。
自动盘片过滤器充分继承了上述过滤器的优点，盘式过滤器的核心为滤条，有很多双面带沟槽的塑料盘片相互叠加，称为叠片式过滤器，其相邻盘片间便形成了许许多多的交叉点，这些交叉点由外向里是不断缩小的，形成了有梯度过滤效果的过滤芯，采用这种过滤原理的过滤器在过滤和反冲洗时盘片间隙动态可变，可提高过滤性能，又可大大减少反洗用水量，通常自耗水量约为0.25％。可看作是一个组合模块，反洗是完全拆开、反洗完又重新完整组装好。具有过滤精度高，清洗完全，运转成本低等优点。
叠片式过滤器在发达国家的应用已相当普遍，因其能够在相当苛刻的使用条件下精确稳定地工作并很少需要维护而被广泛用于灌溉、废水处理、污水再生、市政供水、自来水厂、大型发电厂、化工企业、及应急情况过滤等领域。
目前市售的叠片式过滤器的滤芯基本上由叠片、支撑架、压帽弹簧机构、反洗喷水机构和逆止机构构成。其中的叠片为环状薄片，在叠片上下两个表面上分布有通过叠片中心的或不通过中心的沟槽。当多片叠片贴合在一起后，在相邻叠片间构成了由外向叠片中心的多个交叉点，每个交叉点相当于滤网的一个节点，因此当水通过叠片式滤芯时，相当于通过多层滤网。反冲洗喷水机构一般为方形空心腔体，上有数排喷孔。叠片组套在支撑架上，上端用压帽弹簧机构压紧。其主要问题在于结构复杂。如专利号ZL200720119022.5的结构，为了反冲洗，设置了多个反冲洗喷嘴；专利号ZL200620023571.8设置了反冲管、反冲进水口、水动活塞以及反冲水动喷水孔，为清洁过滤器设置了复杂的反冲洗机构。专利号94236652.5的专利，其叠片直径不相同，从上到下串列成金字塔形状。目前叠片均由注塑模具注射成型，每个过滤器所需的叠片数量超过150片，叠片直径不同就意味着需要超过150套模具来制造叠片，或采用二次加工的方法，将注塑出的直径相同的叠片切成直径不相同的多个叠片，但这会浪费大量材料。上述滤芯还有一个共同的缺陷，即叠片不可能完全清洗干净。其原因在于，当某些微生物在叠片表面生长时，会产生一种黏性物质，将相邻叠片粘合在一起，反冲洗时，喷孔喷出的水很难将粘合在一起的叠片冲开，致使粘合在一起的叠片失去过水功能。当粘合在一起的叠片数目增多后，滤芯的过水面积减小，水阻力增大，使向下游喷灌（或滴灌）喷嘴提供的水量和水压减小。
市场上还有一种结构简单的叠片式过滤器，其滤芯由叠片和支撑架构成，没有压帽弹簧机构、反洗喷水孔和逆止机构。冲洗时，首先松开支撑架上压紧叠片的压帽，使叠片处于松散状态，然后从过滤器出水管通入水，反向冲洗叠片。冲洗后，拧紧叠片压帽，使叠片贴合在一起。但一来反向冲洗时需要较大的水压，势必需要大量的水来进行反向冲洗，二来反向冲洗时，松散的叠片在水流的冲击下往往会发生部分互叠，使得冲刷不到位，影响冲洗效果。
发明内容
本发明的目的在于克服现有技术的不足，提供一种结构简单，使用方便，容易反向冲洗，且反向冲洗时节水高效的一种叠片式过滤器的滤芯装置。
为了实现上述发明目的，采用的技术方案如下：
一种叠片式过滤器的滤芯装置，包括滤条、支撑架、压帽、压帽调整机构，所述滤条套装在支撑架的外部，滤条由表面设有过滤槽的带状薄片体通过螺旋缠绕形成连续的圆柱体，所述圆柱体的至少一端与压帽连接，并能在压帽调整机构的调整下沿着滤芯装置的轴线方向向内压缩或向外拉伸。
上述技术方案中，所述圆柱体的一端固定在支撑架的底部，另一端则位于支撑架的顶部，并与压帽固定连接。
进一步地，所述滤条由一个圆环沿一条环绕一根轴线的、等直径的螺旋线生成具有一定厚度的滤条，在垂直于轴线方向为垂直于轴线的圆环面，圆环面上分布有过滤槽。
所述滤条由多个圆环沿轴线方向延伸，构成了一个圆柱环，所有圆环外直径相同，所有圆环内直径也相同。
本发明的核心点在于提出了螺旋式叠片，这种结构的叠片不需采用注塑工艺生产，而是采用挤塑工艺。在生产中，从挤塑机出来的是连续的、围绕轴心的螺旋状的、并且其截面为平面的螺旋状滤片，然后根据需要的长度剪断后与支撑架、压帽及压紧螺栓装配成滤芯。与单个叠片相比，这种生产工艺能极大提高生产效率，并且没有注塑工艺中产生的水口废料，大大提高材料利用率；从冲洗的角度，这种结构的滤芯能够使每一个叠片的两个过滤表面均能够被冲刷到位。并且由于可以将滤芯置于容器中进行漂洗，而不必使用带压力的水来冲洗，可极大节约冲洗水。
附图说明
图1是本发明的滤条结构示意图；
图2为本发明的结构示意图；
图3是本发明在压紧状态下的结构示意图；
图4是本发明在反向冲洗状态下的结构示意图。
具体实施方式
下面结合附图对本发明做进一步的说明。
如附图1所示为本发明的螺旋缠绕式滤条结构，由一个圆环沿一条环绕一根轴线的、等直径的螺旋线生成具有一定厚度的滤条。在垂直于轴线方向，为垂直于轴线的圆环面。在圆环面上分布有过滤槽。该滤条的一个主要特征是，沿轴线方向，外直径和内直径均相同，构成了一个圆柱环，该滤条的另一个特征是，沿着轴线方向可以拉长，使每一圈螺旋片成等间距被拉开；也可以沿轴线方向被压紧，使每一圈螺旋片均可无间隙被压紧。
如附图2所示为本发明的结构示意图，由一根一体式螺旋滤条4、支撑架3、压帽2、压帽调节螺杆1构成。滤条4套装在圆柱状支撑架3外部、并用压帽2和压帽调节螺杆1压紧后，构成一个中空的、圆柱状的滤芯。
当旋紧压帽调节螺杆1，压帽2沿着轴线方向将滤条4压紧，构成一个中空的圆柱状滤芯，此状态为正常过滤状态，如附图3所示。
如附图4所示为本发明在反向冲洗状态下的结构，当松开压帽调节螺杆1，并向外拉开压帽2，滤条4被拉开，滤条的螺旋片之间出现等间距空隙，并且可以根据需要确定螺旋片之间的间距的大小。此时即可对滤芯进行清洗，可以采用自动式清洗结构和方法对滤条进行清洗，也可手工清洗。手工清洗时，可不必使用高压水来冲洗，极大节约了冲洗滤芯的用水量。
本发明在过滤状态下，滤条4呈压紧状态，在冲洗状态下，当松开压帽2，并拉开滤条4后，相邻的螺旋滤片均被拉开，不存在仍然贴合在一起的螺旋滤片。在人工清洗下，不必使用带压力的水来冲洗，可以将多个过滤器置于一个容器中进行漂洗。

Claims (5)

  1. 一种叠片式过滤器的滤芯装置，其特征在于包括滤条、支撑架、压帽、压帽调整机构，所述滤条套装在支撑架的外部，滤条由表面设有过滤槽的带状薄片体通过螺旋缠绕形成连续的圆柱体，所述圆柱体的至少一端与压帽连接，并能在压帽调整机构的调整下沿着滤芯装置的轴线方向向内压缩或向外拉伸。
  2. 根据权利要求1所述的滤芯装置，其特征在于所述滤条的一端固定在支撑架的底部，另一端则位于支撑架的顶部，并与压帽固定连接。
  3. 根据权利要求1或2所述的滤芯装置，其特征在于所述滤条为由一个圆环沿一条环绕一根轴线的、等直径的螺旋线生成具有一定厚度的滤条，在垂直于轴线方向为垂直于轴线的圆环面，圆环面上分布有过滤槽。
  4. 根据权利要求3所述的滤芯装置，其特征是所述滤条由多个圆环沿轴线方向延伸，构成了一个圆柱环，所有圆环外直径相同，所有圆环内直径也相同。
  5. 根据权利要求1所述的滤芯装置，其特征在于所述滤条采用塑胶原料从挤塑机挤出来的连续的、围绕自己轴心的螺旋状的、并且其截面为平面的螺旋状滤片，然后根据需要的长度剪断后与支撑架、压帽及压紧螺栓装配成滤芯装置。
PCT/CN2010/071035 2010-02-11 2010-03-15 一种叠片式过滤器的滤芯装置 WO2011097835A1 (zh)

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