CN221867680U - A filter device for water supply and drainage - Google Patents
A filter device for water supply and drainage Download PDFInfo
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 61
- 238000001914 filtration Methods 0.000 claims abstract description 20
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 15
- 238000007789 sealing Methods 0.000 claims description 9
- 229920000742 Cotton Polymers 0.000 claims description 7
- 229910052799 carbon Inorganic materials 0.000 claims 1
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 9
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- 239000000463 material Substances 0.000 description 4
- 230000007774 longterm Effects 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 101001121408 Homo sapiens L-amino-acid oxidase Proteins 0.000 description 1
- 101000827703 Homo sapiens Polyphosphoinositide phosphatase Proteins 0.000 description 1
- 102100026388 L-amino-acid oxidase Human genes 0.000 description 1
- 102100023591 Polyphosphoinositide phosphatase Human genes 0.000 description 1
- 101100233916 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) KAR5 gene Proteins 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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Abstract
本实用新型涉及过滤装置技术领域，尤其涉及一种给排水用过滤装置，其技术方案包括外筒，所述外筒的两端均固定设置有连接组件，所述外筒的进水端内部与外壁之间转动设置有截流阀，所述外筒的中部开设有半圆柱形安装口，所述外筒通过若干紧固件在所述安装口中固定连接有内筒；本实用新型通过在外筒上开设一个安装口，并在外筒上相对此安装口的周围分别固定设置第二扇形板、第二矩形板，使得在安装口中往外筒内部安装一个外部具有第一扇形板、第一矩形板的内筒，并且能通过多个紧固件把第一扇形板与第二扇形板相固定连接，把第一矩形板与第二矩形板相固定连接，从而达到了不用拆卸过滤装置就能更换滤芯的效果，简化了更换流程。
The utility model relates to the technical field of filtering devices, and in particular to a filtering device for water supply and drainage, wherein the technical scheme comprises an outer cylinder, both ends of the outer cylinder are fixedly provided with connecting components, a shut-off valve is rotatably provided between the inside of the water inlet end of the outer cylinder and the outer wall, a semi-cylindrical mounting opening is provided in the middle of the outer cylinder, and the outer cylinder is fixedly connected with an inner cylinder in the mounting opening through a plurality of fasteners; the utility model opens a mounting opening on the outer cylinder, and respectively fixes a second fan-shaped plate and a second rectangular plate around the mounting opening on the outer cylinder, so that an inner cylinder having a first fan-shaped plate and a first rectangular plate on the outside is installed inside the outer cylinder in the mounting opening, and the first fan-shaped plate can be fixedly connected to the second fan-shaped plate and the first rectangular plate can be fixedly connected to the second rectangular plate through a plurality of fasteners, thereby achieving the effect of replacing the filter element without disassembling the filtering device, thereby simplifying the replacement process.
Description
技术领域Technical Field
本实用新型涉及过滤装置技术领域，具体为一种给排水用过滤装置。The utility model relates to the technical field of filter devices, in particular to a filter device for water supply and drainage.
背景技术Background Art
给排水在工程施工上指的是城市建筑建设时的用水供给系统、排水系统和建筑给排水等，简称给排水，这是一项基本的民生设施；过滤装置是一种很常见的装置，因此给排水的设施中经常会投入水过滤装置进行对水过滤，从而提高用水的质量，常见的过滤装置种类有很多，如：活性炭过滤器、粗虑过滤器等。可根据用水要求、水质及要求出水水质来选择匹配的类型。由于过滤器长期运行或长期闲置都会影响到其寿命与工作效率，所以维护与保养很重要。Water supply and drainage in engineering construction refers to the water supply system, drainage system and building water supply and drainage during urban construction, which is referred to as water supply and drainage. It is a basic livelihood facility; the filter device is a very common device, so water filter devices are often used in water supply and drainage facilities to filter water to improve the quality of water. There are many common types of filter devices, such as activated carbon filters, coarse filters, etc. The matching type can be selected according to the water use requirements, water quality and required effluent water quality. Since the long-term operation or long-term idleness of the filter will affect its life and work efficiency, maintenance and maintenance are very important.
现有技术在使用的过程中还存在以下缺陷：The prior art also has the following defects during use:
1、现有技术在使用时，常用的过滤装置只能一次性实用，较为浪费，并且在使用时当长时间使用后，更换过滤芯的操作较为繁琐；1. In the prior art, the commonly used filtering device can only be used once, which is wasteful, and the operation of replacing the filter element is cumbersome after long-term use;
2、现有技术在使用时，现有的过滤装置只具有一种过滤规格，不能实时观察过滤情况，并且不能根据不同水质要求来快捷更换过滤装置的内芯规格以及不能更换不同尺寸的内芯。2. When the prior art is in use, the existing filter device has only one filter specification, and the filter status cannot be observed in real time. The inner core specification of the filter device cannot be quickly replaced according to different water quality requirements, and the inner core of different sizes cannot be replaced.
鉴于此我们提出一种给排水用过滤装置来解决现有的问题。In view of this, we propose a filtering device for water supply and drainage to solve the existing problems.
实用新型内容Utility Model Content
本实用新型的目的在于提供一种给排水用过滤装置，以解决上述背景技术中提出的问题。The purpose of the utility model is to provide a filtering device for water supply and drainage to solve the problems raised in the above background technology.
为实现上述目的，本实用新型提供如下技术方案：一种给排水用过滤装置，包括外筒，所述外筒的两端均固定设置有连接组件，所述外筒的进水端内部与外壁之间转动设置有截流阀，所述外筒的中部开设有半圆柱形安装口，所述外筒通过若干紧固件在所述安装口中固定连接有内筒，所述内筒的内部固定设置有过滤内芯组。To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a filtering device for water supply and drainage, comprising an outer cylinder, both ends of the outer cylinder are fixedly provided with connecting components, a shut-off valve is rotatably provided between the inside of the water inlet end of the outer cylinder and the outer wall, a semi-cylindrical mounting opening is opened in the middle of the outer cylinder, the outer cylinder is fixedly connected to the inner cylinder in the mounting opening by a plurality of fasteners, and a filter core group is fixedly provided inside the inner cylinder.
优选的，所述内筒的进水端、出水端的筒壁上均固定设置有透明观察镜，所述内筒相对于所述两透明观察镜之间的筒壁上固定设置有把手，所述内筒的进水端固定设置有大间隙格栅，所述内筒的端部具有第一扇形板，所述内筒的筒壁两侧均具有第一矩形板，所述第一扇形板与所述第一矩形板均通过若干所述紧固件与所述外筒相固定连接。Preferably, transparent observation mirrors are fixedly provided on the cylinder walls of the water inlet end and the water outlet end of the inner cylinder, a handle is fixedly provided on the cylinder wall of the inner cylinder relative to the two transparent observation mirrors, a large gap grille is fixedly provided at the water inlet end of the inner cylinder, a first fan-shaped plate is provided at the end of the inner cylinder, and first rectangular plates are provided on both sides of the cylinder wall of the inner cylinder, and the first fan-shaped plate and the first rectangular plate are fixedly connected to the outer cylinder by a plurality of fasteners.
优选的，所述过滤内芯组包括至少三个小间隙格栅、固定设置在所述前两个小间隙格栅之间的过滤棉、固定设置所述最后一个小间隙格栅前的活性炭。Preferably, the filter core group includes at least three small-gap grilles, filter cotton fixedly arranged between the first two small-gap grilles, and activated carbon fixedly arranged in front of the last small-gap grille.
优选的，所述外筒上相对于所述安装口的两端部均具有第二扇形板、两侧部具有第二矩形板，所述第二扇形板与所述第一扇形板相抵触连接，所述第二矩形板与所述第一矩形板相抵触连接。Preferably, the outer cylinder has second fan-shaped plates at both ends relative to the mounting opening and second rectangular plates at both sides, the second fan-shaped plates are connected in abutment with the first fan-shaped plates, and the second rectangular plates are connected in abutment with the first rectangular plates.
优选的，所述截流阀的一端具有截停件且直径与所述外筒的内径尺寸相同，所述截流阀的另一端具有夹持部。Preferably, one end of the shut-off valve has a stopper with a diameter the same as the inner diameter of the outer cylinder, and the other end of the shut-off valve has a clamping portion.
优选的，所述外筒的内径尺寸与所述内筒的外径尺寸相同。Preferably, the inner diameter of the outer cylinder is the same as the outer diameter of the inner cylinder.
优选的，所述连接组件包括接头、多个紧固螺栓、密封环，所述接头的一端与所述外筒的端部相固定连接，所述接头的另一端端面上开设有连接槽，所述密封环套设在所述连接槽的槽底，多个所述紧固螺栓均匀固定连接在所述接头的外周上。Preferably, the connecting assembly includes a joint, a plurality of fastening bolts, and a sealing ring, one end of the joint is fixedly connected to the end of the outer cylinder, a connecting groove is provided on the end surface of the other end of the joint, the sealing ring is sleeved on the bottom of the connecting groove, and a plurality of the fastening bolts are evenly fixedly connected to the outer periphery of the joint.
与现有技术相比，本实用新型的有益效果是：Compared with the prior art, the beneficial effects of the utility model are:
1、本实用新型通过在外筒上开设一个半圆柱形安装口，并且在外筒上相对此安装口的周围分别固定设置第二扇形板、第二矩形板，从而使得在安装口中往外筒内部安装一个外部具有第一扇形板、第一矩形板的内筒，并且能通过多个紧固件把第一扇形板与第二扇形板相固定连接，把第一矩形板与第二矩形板相固定连接，从而达到了不用拆卸过滤装置就能更换滤芯的效果，简化了更换流程。1. The utility model opens a semi-cylindrical mounting opening on the outer cylinder, and respectively fixes a second sector plate and a second rectangular plate around the mounting opening on the outer cylinder, so that an inner cylinder having a first sector plate and a first rectangular plate on the outside is mounted inside the outer cylinder in the mounting opening, and the first sector plate and the second sector plate can be fixedly connected, and the first rectangular plate and the second rectangular plate can be fixedly connected, by a plurality of fasteners, so that the filter element can be replaced without disassembling the filter device, and the replacement process is simplified.
2、本实用新型通过在该过滤装置中设置外筒，在外筒的进水端与出水端的筒壁上均固定设置一个透明观察镜，使得在使用时能通过这两个透明观察镜观察过滤情况；又在外筒上的安装口中安装一个可更换的内筒，并在内筒中的进水端固定设置大间隙格栅，在内筒内部固定设置至少三个小间隙格栅，并且在进水端两个相近小间隙格栅之间固定设置过滤棉，在出水端相近两格栅之间固定设置活性炭，从而实现了能根据水质要求来更换不同规格和不同尺寸过滤内芯的效果。2. The utility model arranges an outer cylinder in the filter device, and a transparent observation mirror is fixedly arranged on the cylinder wall of the water inlet end and the water outlet end of the outer cylinder, so that the filtering situation can be observed through the two transparent observation mirrors when in use; and a replaceable inner cylinder is installed in the installation opening on the outer cylinder, and a large gap grid is fixedly arranged at the water inlet end of the inner cylinder, at least three small gap grids are fixedly arranged inside the inner cylinder, and filter cotton is fixedly arranged between two adjacent small gap grids at the water inlet end, and activated carbon is fixedly arranged between two adjacent grids at the water outlet end, thereby achieving the effect of replacing filter cores of different specifications and sizes according to water quality requirements.
附图说明BRIEF DESCRIPTION OF THE DRAWINGS
图1为本实用新型的三维立体结构示意图；FIG1 is a schematic diagram of a three-dimensional structure of the utility model;
图2为本实用新型的内筒示意图；Figure 2 is a schematic diagram of the inner cylinder of the utility model;
图3为本实用新型的局部结构示意图；FIG3 is a schematic diagram of a partial structure of the utility model;
图4为本实用新型的内筒、过滤内芯组局部剖面结构示意图。FIG4 is a schematic diagram of a partial cross-sectional structure of the inner cylinder and the filter inner core group of the utility model.
图中：1、外筒；101、第二扇形板；102、第二矩形板；2、连接组件；21、接头；22、紧固螺栓；23、密封环；3、截流阀；31、截停件；32、夹持部；4、安装口；5、紧固件；6、内筒；61、透明观察镜；62、把手；63、大间隙格栅；64、第一扇形板；65、第一矩形板；7、过滤内芯组；71、小间隙格栅；72、过滤棉；73、活性炭；8、连接槽。In the figure: 1, outer cylinder; 101, second sector plate; 102, second rectangular plate; 2, connecting assembly; 21, joint; 22, fastening bolt; 23, sealing ring; 3, shut-off valve; 31, stop piece; 32, clamping part; 4, mounting port; 5, fastener; 6, inner cylinder; 61, transparent observation mirror; 62, handle; 63, large gap grille; 64, first sector plate; 65, first rectangular plate; 7, filter core group; 71, small gap grille; 72, filter cotton; 73, activated carbon; 8, connecting groove.
具体实施方式DETAILED DESCRIPTION
下文结合附图和具体实施例对本实用新型的技术方案做进一步说明。The technical solution of the utility model is further described below in conjunction with the accompanying drawings and specific embodiments.
实施例一Embodiment 1
如图1至图4所示，本实用新型提出的一种给排水用过滤装置，包括外筒1，外筒1的两端均固定设置有连接组件2，外筒1的进水端内部与外壁之间转动设置有截流阀3，外筒1的中部开设有半圆柱形安装口4，外筒1通过若干紧固件5在安装口4中固定连接有内筒6，内筒6的内部固定设置有过滤内芯组7；使用时，实现了快捷更换内筒6或滤芯的效果，同时实现了对粗过滤后的水流进行更高质量的过滤、实现在该过滤装置重复使用的情况下来改变过滤质量，减少了材料浪费。As shown in Figures 1 to 4, a filtering device for water supply and drainage proposed by the utility model comprises an outer cylinder 1, both ends of the outer cylinder 1 are fixedly provided with connecting components 2, a shut-off valve 3 is rotatably provided between the inside of the water inlet end of the outer cylinder 1 and the outer wall, a semi-cylindrical mounting port 4 is provided in the middle of the outer cylinder 1, the outer cylinder 1 is fixedly connected with an inner cylinder 6 in the mounting port 4 through a plurality of fasteners 5, and a filter core group 7 is fixedly provided inside the inner cylinder 6; when in use, the inner cylinder 6 or the filter core can be quickly replaced, and at the same time, the water flow after coarse filtration can be filtered with higher quality, and the filtering quality can be changed when the filtering device is reused, thereby reducing material waste.
进一步地，内筒6的进水端、出水端的筒壁上均固定设置有透明观察镜61，使用时，实现了可通过这两个透明观察镜61观察过滤情况；内筒6相对于两透明观察镜61之间的筒壁上固定设置有把手62，使用时，使得能手持此把手62，方便安装内筒6与拆卸内筒6；内筒6的进水端固定设置有大间隙格栅63，使用时，实现了大间隙格栅63对较大异物阻挡的效果；内筒6的端部具有第一扇形板64，内筒6的筒壁两侧均具有第一矩形板65，第一扇形板64与第一矩形板65均通过若干紧固件5与外筒1相固定连接；使用时，实现了内筒6与外筒1通过第一扇形板64、第一矩形板65相密封、抵触而连接的效果。Furthermore, transparent observation mirrors 61 are fixedly provided on the walls of the water inlet and outlet ends of the inner cylinder 6. When in use, the filtering situation can be observed through the two transparent observation mirrors 61; a handle 62 is fixedly provided on the wall of the inner cylinder 6 between the two transparent observation mirrors 61. When in use, the handle 62 can be held by hand to facilitate the installation and disassembly of the inner cylinder 6; a large gap grille 63 is fixedly provided on the water inlet end of the inner cylinder 6. When in use, the large gap grille 63 has the effect of blocking larger foreign objects; the end of the inner cylinder 6 has a first fan-shaped plate 64, and both sides of the wall of the inner cylinder 6 have a first rectangular plate 65. The first fan-shaped plate 64 and the first rectangular plate 65 are fixedly connected to the outer cylinder 1 through a plurality of fasteners 5; when in use, the inner cylinder 6 and the outer cylinder 1 are sealed and contacted by the first fan-shaped plate 64 and the first rectangular plate 65.
进一步地，过滤内芯组7包括至少三个小间隙格栅71、固定设置在前两个小间隙格栅71之间的过滤棉72、固定设置最后一个小间隙格栅71前的活性炭73，使用时，通过在进水端相近的两个小间隙格栅71之间安装过滤棉72，实现了对水流的初步粗过滤，通过在后两个相近的小间隙格栅71之间安装活性炭73，实现了对粗过滤后的水流进行更高质量的过滤、实现在该过滤装置重复使用的情况下来改变过滤质量，减少了材料浪费。Furthermore, the filter core group 7 includes at least three small-gap grilles 71, filter cotton 72 fixedly arranged between the first two small-gap grilles 71, and activated carbon 73 fixedly arranged in front of the last small-gap grille 71. When in use, the filter cotton 72 is installed between two small-gap grilles 71 close to the water inlet end, so that preliminary coarse filtration of the water flow is achieved. By installing activated carbon 73 between the last two close small-gap grilles 71, higher-quality filtration of the coarsely filtered water flow is achieved, and the filtration quality can be changed when the filter device is reused, thereby reducing material waste.
进一步地，外筒1上相对于安装口4的两端部均具有第二扇形板101、两侧部具有第二矩形板102，第二扇形板101与第一扇形板64相抵触连接，第二矩形板102与第一矩形板65相抵触连接；使用时，实现了能通过多个紧固件5把第一扇形板64与第二扇形板101相固定连接，把第一矩形板65与第二矩形板102相固定连接，从而达到了不用拆卸过滤装置就能更换滤芯的效果，简化了更换流程。Furthermore, the outer cylinder 1 has a second fan-shaped plate 101 at both end portions relative to the mounting opening 4, and a second rectangular plate 102 at both side portions. The second fan-shaped plate 101 is connected in contact with the first fan-shaped plate 64, and the second rectangular plate 102 is connected in contact with the first rectangular plate 65. When in use, the first fan-shaped plate 64 and the second fan-shaped plate 101 can be fixedly connected, and the first rectangular plate 65 and the second rectangular plate 102 can be fixedly connected by a plurality of fasteners 5, thereby achieving the effect of replacing the filter element without disassembling the filter device, thereby simplifying the replacement process.
进一步地，截流阀3的一端具有截停件31且直径与外筒1的内径尺寸相同，截流阀3的另一端具有夹持部32；使用时，实现了更换内筒6或滤芯时能通过转动夹持部32进而使截停件31在外筒1内转动的作用，从而实现截流阀3控制水流流动或停止的效果。Furthermore, one end of the shut-off valve 3 has a stopper 31 whose diameter is the same as the inner diameter of the outer tube 1, and the other end of the shut-off valve 3 has a clamping portion 32; when in use, when replacing the inner tube 6 or the filter element, the stopper 31 can be rotated in the outer tube 1 by rotating the clamping portion 32, thereby achieving the effect of the shut-off valve 3 controlling the flow or stopping of water.
进一步地，外筒1的内径尺寸与内筒6的外径尺寸相同；使用时，实现了，把内筒6安装到外筒1中后能实现紧密接触，而不会发生泄漏。Furthermore, the inner diameter of the outer cylinder 1 is the same as the outer diameter of the inner cylinder 6; when in use, after the inner cylinder 6 is installed in the outer cylinder 1, close contact can be achieved without leakage.
进一步地，连接组件2包括接头21、多个紧固螺栓22、密封环23，接头21的一端与外筒1的端部相固定连接，接头21的另一端端面上开设有连接槽8，密封环23套设在连接槽8的槽底，多个紧固螺栓22均匀固定连接在接头21的外周上；使用时，实现了给排水管道插入连接槽8后与密封环23抵触，从而实现密封的效果，又通过多个紧固螺栓22把给排水管道与接头21相固定连接在一起，从而实现紧密连接的效果。Furthermore, the connecting assembly 2 includes a joint 21, a plurality of fastening bolts 22, and a sealing ring 23. One end of the joint 21 is fixedly connected to the end of the outer tube 1, and a connecting groove 8 is provided on the end surface of the other end of the joint 21. The sealing ring 23 is sleeved on the bottom of the connecting groove 8, and a plurality of fastening bolts 22 are evenly fixedly connected to the outer periphery of the joint 21. When in use, the water supply and drainage pipe is inserted into the connecting groove 8 and contacts the sealing ring 23, thereby achieving a sealing effect, and the water supply and drainage pipe is fixedly connected to the joint 21 through a plurality of fastening bolts 22, thereby achieving a tight connection effect.
基于实施例一的给排水用过滤装置工作原理是：本实用新型在使用时，首先通过在外筒1上开设一个半圆柱形安装口4，并且在外筒1上相对此安装口4的周围分别固定设置第二扇形板101、第二矩形板102，从而使得在安装口4中往外筒1内部安装一个外部具有第一扇形板64、第一矩形板65的内筒6，并且能通过多个紧固件5把第一扇形板64与第二扇形板101相固定连接，把第一矩形板65与第二矩形板102相固定连接，从而达到了不用拆卸过滤装置就能更换滤芯的效果，简化了更换流程；又在外筒1上的安装口4中安装一个可更换的内筒6，并在内筒6中的进水端固定设置大间隙格栅63，在内筒6内部固定设置至少三个小间隙格栅71，并且在进水端两个相近小间隙格栅71之间固定设置过滤棉72，在出水端相近两格栅之间固定设置活性炭73，当需要过滤更高质量的水时，能通过更换内筒6的尺寸或者内筒6中小间隙格栅71之间的过滤材料即可实现在该过滤装置重复使用的情况下来改变过滤质量，减少了材料浪费、实现了能根据水质要求来更换不同规格和不同尺寸过滤内芯的效果；在外筒1的进水端与出水端的筒壁上均固定设置一个透明观察镜61，在当需要更过滤不同质量的水时，此时可通过这两个透明观察镜61观察过滤的水流情况。The working principle of the water supply and drainage filtering device based on the first embodiment is as follows: when the utility model is in use, firstly, a semi-cylindrical mounting opening 4 is opened on the outer cylinder 1, and a second sector plate 101 and a second rectangular plate 102 are fixedly arranged on the outer cylinder 1 around the mounting opening 4, so that an inner cylinder 6 having a first sector plate 64 and a first rectangular plate 65 on the outside is installed inside the outer cylinder 1 in the mounting opening 4, and the first sector plate 64 can be fixedly connected with the second sector plate 101 and the first rectangular plate 65 can be fixedly connected with the second rectangular plate 102 by a plurality of fasteners 5, so that the filter element can be replaced without disassembling the filtering device, simplifying the replacement process; and a replaceable inner cylinder 6 is installed in the mounting opening 4 on the outer cylinder 1, and a water inlet end of the inner cylinder 6 is fixedly fixedly connected to the inner cylinder 6. A large gap grid 63 is fixedly set, at least three small gap grids 71 are fixedly set inside the inner cylinder 6, and a filter cotton 72 is fixedly set between two adjacent small gap grids 71 at the water inlet end, and an activated carbon 73 is fixedly set between two adjacent grids at the water outlet end. When it is necessary to filter water of higher quality, the filtration quality can be changed by replacing the size of the inner cylinder 6 or the filter material between the small gap grids 71 in the inner cylinder 6, so as to achieve the effect of changing the filter cores of different specifications and sizes according to water quality requirements by reusing the filter device, thereby reducing material waste and achieving the effect of replacing filter cores of different specifications and sizes according to water quality requirements; a transparent observation mirror 61 is fixedly set on the cylinder wall of the water inlet end and the water outlet end of the outer cylinder 1. When it is necessary to filter water of different quality, the filtered water flow can be observed through the two transparent observation mirrors 61.
上述具体实施例仅仅是本实用新型的几种优选的实施例，基于本实用新型的技术方案和上述实施例的相关启示，本领域技术人员可以对上述具体实施例做出多种替代性的改进和组合。The above-mentioned specific embodiments are only several preferred embodiments of the present invention. Based on the technical solution of the present invention and the relevant inspiration of the above-mentioned embodiments, those skilled in the art can make various alternative improvements and combinations to the above-mentioned specific embodiments.
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