WO2016086387A1 - 一种快速反冲洗过滤器 - Google Patents

一种快速反冲洗过滤器 Download PDF

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Publication number
WO2016086387A1
WO2016086387A1 PCT/CN2014/093021 CN2014093021W WO2016086387A1 WO 2016086387 A1 WO2016086387 A1 WO 2016086387A1 CN 2014093021 W CN2014093021 W CN 2014093021W WO 2016086387 A1 WO2016086387 A1 WO 2016086387A1
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Prior art keywords
drum
filter
passage
valve port
casing
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PCT/CN2014/093021
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English (en)
French (fr)
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苏俊
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苏俊
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Priority to PCT/CN2014/093021 priority Critical patent/WO2016086387A1/zh
Publication of WO2016086387A1 publication Critical patent/WO2016086387A1/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
    • B01D29/62—Regenerating the filter material in the filter
    • B01D29/66—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/12—Devices for taking out of action one or more units of multi- unit filters, e.g. for regeneration

Definitions

  • the present invention relates to a filtering device, and more particularly to a filtering device that can be quickly backwashed.
  • the structure mainly comprises a casing, the casing is provided with a liquid inlet and a liquid discharge port, and the casing is further provided with a filter cartridge, and the filter cartridge is provided with a plurality of filters.
  • a core the liquid inlet is connected to a space outside the filter element through a pre-filtration passage, and an inner space of the filter element is connected to the liquid discharge port through a filter passage; the liquid inlet is connected with an inlet valve and a slag discharge valve arranged in parallel.
  • the liquid port is connected with an intake valve and a drain valve arranged in parallel, and the inlet valve, the slag discharge valve, the intake valve and the drain valve are connected by an external pipe.
  • the liquid inlet enters the liquid, enters the filter cartridge through the pre-filtration channel, and after filtering through the filter element, the filter residue is blocked on the filter element, and the relatively clean liquid is discharged from the liquid discharge port through the filter passage.
  • the inlet valve and the drain valve are closed, then the intake valve and the slag discharge valve are opened, and the compressed air backflushing filter element is used to discharge the filter residue from the slag discharge valve.
  • the disadvantages are: firstly, the device is inconvenient to operate, and it is necessary to control a plurality of valves at the same time; secondly, due to the long pipe length, the slag discharge is not thorough and the work efficiency is low; thirdly, the compressed air needs to be sufficient in the backwashing process.
  • the flow area and air pressure, the existing pipeline size is small, the compressed air can not be released instantaneously, and the impact force of the backwashing is small, which easily leads to incomplete slagging.
  • a rapid backwashing filter comprising a housing provided with a liquid inlet and a liquid discharge port, and a filter cartridge mounted on the housing, the filter cartridge being provided with a plurality of filter cores.
  • the inlet port is connected to the space outside the filter element through the pre-filtration passage, and the inner space of the filter element is connected to the liquid discharge port through the filter passage;
  • the hollow outer outer tube is arranged longitudinally at the top of the housing, and the inner rotating tube is arranged in the outer rotating tube
  • the outer drum is rotatably mounted on the casing and passes through the filtering rear passage and the pre-filtration passage.
  • the outer side of the outer drum seals and isolates between the pre-filtration passage and the filtering passage, and between the outer outer casing and the outer casing
  • the inner rotating cylinder is arranged in the outer rotating cylinder, and the inner rotating cylinder and the outer rotating cylinder side are correspondingly provided with an upper valve port and a lower valve port, the upper valve port position corresponds to the filtering channel, the lower valve port position and the filtering
  • the front channel corresponds to the same; when the outer drum rotates, the inlet port and the pre-filter channel are connected or blocked through the upper valve port on the outer drum, and the filtered channel and row are passed through the lower valve port on the outer drum.
  • the liquid port is connected or blocked; a partition plate is arranged between the upper valve port and the lower valve port of the inner drum.
  • the lower end of the inner drum and the drum is turned discharging outlet opening, the upper end of the inner drum is also provided with a rotary joint for intake air.
  • the device When the device is in operation, it has two working modes, one of which is a normal filtering mode.
  • the outer rotating drum is rotated to connect the liquid inlet port with the pre-filtering channel, and at the same time, the filtering channel and the liquid discharging port are connected.
  • the corresponding upper valve on the outer drum and the inner drum The circumferential direction of the mouth is staggered, and the lower valve port is also circumferentially staggered; the liquid inlet enters the liquid, enters the filter cartridge through the filter channel, and after filtering through the filter element, the filter residue is blocked on the filter element, and the relatively clean liquid passes through the filter.
  • the rear channel is discharged from the drain port.
  • the outer drum rotates to separate the liquid inlet from the pre-filtration channel, and at the same time, the filtering channel is separated from the liquid discharge port; then, the inner drum is rotated to make the inner rotation
  • the upper valve port and the lower valve port of the cylinder and the outer drum are simultaneously connected, and the compressed air in the inner drum instantaneously passes through the filtering passage to enter the filter core, blows off the filter residue outside the filter core, and simultaneously passes the filter residue through the pre-filtration passage from the slag discharge port. discharge.
  • the invention has less liquid in the slag discharge, less waste, and can directly supply a large flow of compressed air, so that the filter residue is strongly impacted, the slag discharge efficiency is high, and the slag discharge speed is fast.
  • the slag is more thorough.
  • the device can be used as a sewage filter or an oil filter.
  • the outer circumference of the outer drum is provided with an annular boss, and the upper and lower sides of the annular boss are respectively provided with wear-resistant support members, and the wear-resistant support member on the lower side is supported on the casing, and is located on the upper side.
  • the wear-resistant support member is movably mounted on the inner bottom of the outer pressure cover, and the inner pressure cover is connected with an inner pressure cover partially extending into the outer pressure cover, the inner pressure cover is set on the outer rotary tube, the lower end surface of the inner pressure cover and the upper end resistance
  • a compression spring is disposed between the grinding supports, and the outer pressure cover is fixed to the housing.
  • the wear resistant support can be a carbon alloy bearing. This solution facilitates the installation of the outer drum.
  • the upper end of the outer drum protrudes from the outer portion of the casing to be provided with a lower rotating hand wheel, and the upper end of the inner rotating drum is provided with an upper rotating hand wheel.
  • the device can also realize automatic control.
  • both the pre-filtration channel and the post-filtration channel are attached to the lower end of the filter cartridge. This structure is more conducive to slagging.
  • an exhaust joint is provided at the top of the filter cartridge.
  • Figure 1 is a schematic view of the structure of the present invention.
  • Figure 2 is a partial elevational view taken along line A-A of Figure 1.
  • Fig. 3 is a diagram showing the positional relationship between the inner rotating cylinder and the outer rotating cylinder when the liquid inlet and the pre-filtration passage are connected.
  • Figure 4 is a larger partial view of the portion of B in Figure 1.
  • 1 row slag port 1 row slag port, 2 filter front channel, 3 wear-resistant support, 4 compression spring, 5 filter channel, 6 filter, 7 filter cartridge, 8 exhaust connector, 9 rotary joint, 10 rotating hand wheel, 11 Lower rotating handwheel, 12 discharge ports, 13 outer drums, 13a annular bosses, 14 inner drums, 14a partitions, 15 upper valve ports, 16 lower valve ports, 17 inlet ports, 18 housings, 19 Gland, 20 outer gland.
  • a rapid backwash filter includes a housing 18 having a liquid inlet port 17 and a liquid discharge port 12, A filter cartridge 7 is further disposed on the casing 18, and the filter cartridge 7 is provided with a plurality of filter cores 6.
  • the liquid inlet port 17 is connected to the space outside the filter element 6 through the pre-filtration passage 2, and the internal space of the filter element 6 is filtered through the passage channel 5. It is connected to the liquid discharge port 12; it is characterized in that a hollow outer rotating cylinder 13 is longitudinally disposed at the top of the casing 18, and an inner rotating cylinder 14 is fitted in the outer rotating cylinder 13, and the outer rotating cylinder 13 is rotatably mounted on the casing 18.
  • the outer side of the outer drum 13 is sealed and isolated between the pre-filter channel 2 and the filtered channel 5, and the outer side of the outer drum 13 is also sealedly connected with the casing 18;
  • the rotating drum 14 is disposed in the outer rotating cylinder 13 , and the inner rotating cylinder 14 and the outer rotating cylinder 13 are correspondingly provided with an upper valve port 15 and a lower valve port 16 , and the upper valve port 15 is corresponding to the filtering passage 5 , and the lower valve port
  • the 16 position corresponds to the pre-filter passage 2; when the outer drum 13 rotates, the inlet port 17 and the pre-filter passage 2 are connected or blocked by the upper valve port 15 on the outer drum 13, and at the same time, through the outer drum 13
  • the upper lower valve port 16 connects or blocks the filtered passage 5 and the liquid discharge port 12; a partition 14a, an outer drum 13 and an inner turn are disposed between the upper valve port 15 and the lower valve port 16 of the inner drum 14 Cartridge 14
  • the lower end opening is
  • the outer circumference of the outer drum 13 is provided with an annular boss 13a.
  • the upper and lower sides of the annular boss 13a are respectively provided with wear-resistant support members 3.
  • the wear-resistant support members 3 on the lower side are supported on the casing 18, and are resistant to the upper side.
  • the grinding support member 3 is movably mounted on the bottom of the outer pressure cover 20, and the outer pressure cover 20 is connected with an inner pressure cover 19 partially extending into the outer pressure cover 20, and the inner pressure cover 19 is set on the outer rotation cylinder 13 and the inner pressure cover 19 is under
  • a compression spring 4 is provided between the end face and the wear-resistant support 3 on the upper side, the outer pressure cover 20 being fixed to the housing 18.
  • the wear resistant support 3 is a carbon alloy bearing.
  • a portion of the outer drum 13 that protrudes from the outer side of the casing 18 is provided with a lower rotating hand wheel 11, and an upper rotating hand wheel 10 is provided at an upper end of the inner drum 14.
  • the pre-filtration channel 2 and the post-filtration channel 5 are connected to the lower end of the filter cartridge 7.
  • An exhaust joint 8 is provided at the top of the filter cartridge 7.
  • the device When the device is in operation, it has two working modes, one (see Fig. 3), which is a normal filtering mode.
  • the outer rotating cylinder 13 is rotated to connect the liquid inlet port 17 with the pre-filtration channel 2, and at the same time, after filtering
  • the channel 5 is connected to the valve port on the liquid discharge port 12, and the corresponding upper valve port 15 on the outer drum 13 and the inner drum 14 are circumferentially offset, and the lower valve port 16 is also circumferentially offset; the liquid inlet 17
  • the liquid is introduced into the filter cartridge 7 through the pre-filtration passage 2, and after filtering through the filter element 6, the filter residue is blocked on the filter element 6, and the relatively clean liquid is discharged from the liquid discharge port 12 through the filter passage 5.
  • the lower valve port 16b on the outer drum and the lower valve port 16a on the inner drum are displaced, the compressed air cannot be supplied, and the lower valve port 16b on the outer drum is connected to the inlet port 17 and the filter.
  • the flow path of the passage 2; the upper valve port corresponds to the lower valve port.
  • the second (see FIG. 2) is a slagging mode.
  • the outer drum 13 When slag discharge is required, the outer drum 13 is rotated to block the liquid inlet port 17 from the pre-filtration channel 2, and at the same time, the filtering channel 5 is separated from the liquid discharge port 12; Then, the inner drum 14 is rotated, so that the upper valve port 15 and the lower valve port 16 of the inner drum 14 and the outer drum 13 are simultaneously turned on, and the compressed air in the inner drum 14 instantaneously enters the filter element 6 through the filter passage 5, The filter residue outside the filter element 6 is blown off, and the filter residue is discharged from the slag discharge port 1 through the pre-filtration passage 2.
  • the lower valve port 16b on the outer drum and the lower valve port 16a on the inner drum are correspondingly connected, and the position of the upper valve port is also correspondingly connected, the compressed air is instantaneously supplied, and the outer drum is partitioned.
  • the liquid passage 17 and the flow passage of the pre-filtration passage 2 at the same time, also block the flow passage of the liquid discharge passage and the filtration passage; the invention has a small amount of liquid closed during slag discharge, The waste is small, and the compressed air of a large flow can be instantaneously supplied.
  • the inner cavity of the inner drum can be used as a gas storage cavity.
  • the device can be used as a sewage filter or an oil filter.

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

Abstract

一种快速反冲洗过滤器，其壳体（18）顶部纵向设置有中空的外转筒（13），外转筒（13）内配合设有内转筒（14），外转筒（13）可转动地安装在壳体（18）上并向下穿过滤后通道（5）和滤前通道（2）；内转筒（14）配合设置在外转筒（13）内，内转筒（14）和外转筒（13）侧面对应开设有上阀口（15）和下阀口（16），上阀口（15）位置与滤后通道（5）相对应，下阀口（16）位置与滤前通道（2）相对应；外转筒（13）旋转时，可将进液口（17）与滤前通道（2）接通或隔断，同时将滤后通道（5）与排液口（12）接通或隔断；内转筒（14）的上阀口（15）和下阀口（16）之间设有隔板（14a），外转筒（13）和内转筒（14）下端开口接通排渣口（1），内转筒（14）上端还设有用于进气的旋转接头（9）。

Description

一种快速反冲洗过滤器 技术领域
本发明涉及一种过滤装置，特别涉及一种可快速反冲洗的过滤装置。
背景技术
现有技术中，有一种反冲洗式过滤器，其结构主要包括有壳体，壳体上设有进液口和排液口，壳体上还安装有滤筒，滤筒内设有若干过滤芯，所述进液口经滤前通道与滤芯外的空间相连，滤芯内部空间经滤后通道与排液口相连；所述进液口连接有并联设置的进液阀和排渣阀，排液口连接有并联设置的进气阀和排液阀，进液阀、排渣阀、进气阀和排液阀通过外接管路连接。其正常工作时，进液口进液，经滤前通道进入滤筒内，再经滤芯过滤后，滤渣被阻挡在滤芯上，相对洁净的液体通过滤后通道从排液口排出。当需要进行反冲洗时，关闭进液阀和排液阀，然后打开进气阀和排渣阀，压缩空气反吹滤芯，将滤渣从排渣阀排出。其不足之处在于：首先，该装置操作不便，需要同时操控多个阀；其次，由于管程长，导致排渣不彻底，工作效率低下；其三，压缩空气在反冲洗时，需要有足够的通流面积和气压，现有的管路尺寸较小，压缩空气不能瞬间释放，反冲洗的冲击力小，容易导致排渣不彻底。
发明内容
本发明的目的是提供一种快速反冲洗过滤器，可克服现有技术中的缺陷，使其能瞬间快速排渣，使排渣更彻底。
本发明的目的是这样实现的：一种快速反冲洗过滤器，包括设有进液口和排液口的壳体，壳体上还安装有滤筒，滤筒内设有若干过滤芯，所述进液口经滤前通道与滤芯外的空间相连，滤芯内部空间经滤后通道与排液口相连；壳体顶部纵向设置有中空的外转筒，外转筒内配合设有内转筒，外转筒可转动地安装在壳体上并向下穿过滤后通道和滤前通道，外转筒外侧将滤前通道和滤后通道之间密封隔离，外转筒外侧与壳体之间也密封连接；内转筒配合设置在外转筒内，内转筒和外转筒侧面对应开设有上阀口和下阀口，上阀口位置与滤后通道相对应，下阀口位置与滤前通道相对应；外转筒旋转时，通过外转筒上的上阀口将进液口与滤前通道接通或隔断，同时，通过外转筒上的下阀口将滤后通道与排液口接通或隔断；内转筒的上阀口和下阀口之间设有隔板，外转筒和内转筒下端开口接通排渣口，内转筒上端还设有用于进气的旋转接头。
该装置工作时，具有两种工作方式，其一，为正常过滤方式，此时，外转筒转动到使进液口与滤前通道接通，同时，滤后通道与排液口接通，且外转筒和内转筒上对应的上阀 口周向错开位置、同时下阀口也周向错开位置；进液口进液，经滤前通道进入滤筒内，再经滤芯过滤后，滤渣被阻挡在滤芯上，相对洁净的液体通过滤后通道从排液口排出。其二，为排渣方式，当需要排渣时，外转筒转动到使进液口与滤前通道隔断，同时，滤后通道与排液口隔断；然后，转动内转筒，使得内转筒和外转筒的上阀口和下阀口同时接通，内转筒内的压缩空气瞬间经滤后通道进入滤芯，吹落滤芯外的滤渣，同时将滤渣经滤前通道从排渣口排出。与现有技术相比，本发明在排渣时封闭的液体量少，浪费小，能够瞬间供入大流量的压缩空气，使得滤渣受到强力的冲击，排渣效率高，排渣速度快，排渣更加彻底。该装置可用作污水类过滤器或油类过滤器。
作为本发明的进一步改进，所述外转筒外周设有环形凸台，环形凸台上下侧分别设有耐磨支撑件，位于下侧的耐磨支撑件支撑在壳体上，位于上侧的耐磨支撑件活动安装在外压盖内底部，外压盖上连接有局部伸入外压盖内的内压盖，内压盖套装在外转筒上，内压盖下端面和位于上侧的耐磨支撑件之间设有压缩弹簧，所述外压盖与壳体相固定。耐磨支撑件可以为碳合金轴承。该方案方便了外转筒的安装。
为便于操作，所述外转筒上端伸出壳体外的部分设有下旋转手轮，内转筒上端设有上旋转手轮。当然，如在外转筒上端和内转筒上端设有自动旋转控制机构，本装还可实现全自动控制。
作为本发明的进一步改进，滤前通道和滤后通道均连接在滤筒下端。该结构更利于排渣。
为能方便地排出滤筒内的残余空气，所述滤筒顶部设有排气接头。
附图说明
图1为本发明结构示意图。
图2为图1的A-A向局部视图。
图3为进液口和滤前通道接通时的内转筒、外转筒位置关系图。
图4为图1中B的局部分大图。
其中，1排渣口，2滤前通道，3耐磨支撑件，4压缩弹簧，5滤后通道，6滤芯，7滤筒，8排气接头，9旋转接头，10上旋转手轮，11下旋转手轮，12排液口，13外转筒，13a环形凸台，14内转筒，14a隔板，15上阀口，16下阀口，17进液口，18壳体，19内压盖，20外压盖。
具体实施方式
如图1-4所示，一种快速反冲洗过滤器，包括设有进液口17和排液口12的壳体18， 壳体18上还安装有滤筒7，滤筒7内设有若干过滤芯6，所述进液口17经滤前通道2与滤芯6外的空间相连，滤芯6内部空间经滤后通道5与排液口12相连；其特征在于壳体18顶部纵向设置有中空的外转筒13，外转筒13内配合设有内转筒14，外转筒13可转动地安装在壳体18上并向下穿过滤后通道5和滤前通道2，外转筒13外侧将滤前通道2和滤后通道5之间密封隔离，外转筒13外侧与壳体18之间也密封连接；内转筒14配合设置在外转筒13内，内转筒14和外转筒13侧面对应开设有上阀口15和下阀口16，上阀口15位置与滤后通道5相对应，下阀口16位置与滤前通道2相对应；外转筒13旋转时，通过外转筒13上的上阀口15将进液口17与滤前通道2接通或隔断，同时，通过外转筒13上的下阀口16将滤后通道5与排液口12接通或隔断；内转筒14的上阀口15和下阀口16之间设有隔板14a，外转筒13和内转筒14下端开口接通排渣口1，内转筒14上端还设有用于进气的旋转接头9。所述外转筒13外周设有环形凸台13a，环形凸台13a上下侧分别设有耐磨支撑件3，位于下侧的耐磨支撑件3支撑在壳体18上，位于上侧的耐磨支撑件3活动安装在外压盖20内底部，外压盖20上连接有局部伸入外压盖20内的内压盖19，内压盖19套装在外转筒13上，内压盖19下端面和位于上侧的耐磨支撑件3之间设有压缩弹簧4，所述外压盖20与壳体18相固定。所述耐磨支撑件3为碳合金轴承。外转筒13上端伸出壳体18外的部分设有下旋转手轮11，内转筒14上端设有上旋转手轮10。滤前通道2和滤后通道5连接在滤筒7下端。滤筒7的顶部设有排气接头8。
该装置工作时，具有两种工作方式，其一(参见图3)，为正常过滤方式，此时，外转筒13转动到使进液口17与滤前通道2接通，同时，滤后通道5与排液口12上阀口接通，且外转筒13和内转筒14上对应的上阀口15周向错开位置、同时下阀口16也周向错开位置；进液口17进液，经滤前通道2进入滤筒7内，再经滤芯6过滤后，滤渣被阻挡在滤芯6上，相对洁净的液体通过滤后通道5从排液口12排出。图中，外转筒上的下阀口16b和内转筒上的下阀口16a位置错开，压缩空气不能供入，外转筒上的下阀口16b为接通进液口17和滤前通道2的流道；上阀口与下阀口相对应。其二(参见图2)，为排渣方式，当需要排渣时，外转筒13转动到使进液口17与滤前通道2隔断，同时，滤后通道5与排液口12隔断；然后，转动内转筒14，使得内转筒14和外转筒13的上阀口15和下阀口16同时接通，内转筒14内的压缩空气瞬间经滤后通道5进入滤芯6，吹落滤芯6外的滤渣，同时将滤渣经滤前通道2从排渣口1排出。图中，外转筒上的下阀口16b和内转筒上的下阀口16a位置对应接通，上阀口的位置也相对应接通，压缩空气瞬间供入，外转筒上隔断进液口17和滤前通道2的流道，同时，也隔断排液通道和滤后通道的流道；本发明在排渣时封闭的液体量少， 浪费小，能够瞬间供入大流量的压缩空气，内转筒的内腔可作为储气空腔，其压力释放时使得滤芯上的滤渣瞬间受到强力的冲击，排渣效率高，排渣速度快，排渣更加彻底。该装置可用作污水类过滤器或油类过滤器。
本发明并不局限于上述实施例，在本发明公开的技术方案的基础上，本领域的技术人员根据所公开的技术内容，不需要创造性的劳动就可以对其中的一些技术特征作出一些替换和变形，这些替换和变形均在本发明的保护范围内。

Claims (6)

  1. 一种快速反冲洗过滤器，包括设有进液口和排液口的壳体，壳体上还安装有滤筒，滤筒内设有若干过滤芯，所述进液口经滤前通道与滤芯外的空间相连，滤芯内部空间经滤后通道与排液口相连；其特征在于壳体顶部纵向设置有中空的外转筒，外转筒内配合设有内转筒，外转筒可转动地安装在壳体上并向下穿过滤后通道和滤前通道，外转筒外侧将滤前通道和滤后通道之间密封隔离，外转筒外侧与壳体之间也密封连接；内转筒配合设置在外转筒内，内转筒和外转筒侧面对应开设有上阀口和下阀口，上阀口位置与滤后通道相对应，下阀口位置与滤前通道相对应；外转筒旋转时，通过外转筒上的上阀口将进液口与滤前通道接通或隔断，同时，通过外转筒上的下阀口将滤后通道与排液口接通或隔断；内转筒的上阀口和下阀口之间设有隔板，外转筒和内转筒下端开口接通排渣口，内转筒上端还设有用于进气的旋转接头。
  2. 根据权利要求1所述的一种快速反冲洗过滤器，其特征在于所述外转筒外周设有环形凸台，环形凸台上下侧分别设有耐磨支撑件，位于下侧的耐磨支撑件支撑在壳体上，位于上侧的耐磨支撑件活动安装在外压盖内底部，外压盖上连接有局部伸入外压盖内的内压盖，内压盖套装在外转筒上，内压盖下端面和位于上侧的耐磨支撑件之间设有压缩弹簧，所述外压盖与壳体相固定。
  3. 根据权利要求2所述的一种快速反冲洗过滤器，其特征在于所述耐磨支撑件为碳合金轴承。
  4. 根据权利要求1或2所述的一种快速反冲洗过滤器，其特征在于所述外转筒上端伸出壳体外的部分设有下旋转手轮，内转筒上端设有上旋转手轮。
  5. 根据权利要求1或2所述的一种快速反冲洗过滤器，其特征在于所述滤前通道和滤后通道连接在滤筒下端。
  6. 根据权利要求1或2所述的一种快速反冲洗过滤器，其特征在于所述滤筒顶部设有排气接头。
PCT/CN2014/093021 2014-12-04 2014-12-04 一种快速反冲洗过滤器 WO2016086387A1 (zh)

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