CN105126437A - Multi-stage composite filtration device - Google Patents
Multi-stage composite filtration device Download PDFInfo
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- CN105126437A CN105126437A CN201510655764.9A CN201510655764A CN105126437A CN 105126437 A CN105126437 A CN 105126437A CN 201510655764 A CN201510655764 A CN 201510655764A CN 105126437 A CN105126437 A CN 105126437A
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- 239000002131 composite material Substances 0.000 title claims abstract description 10
- 238000001914 filtration Methods 0.000 title claims description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 143
- 239000004576 sand Substances 0.000 claims abstract description 53
- 238000005192 partition Methods 0.000 claims abstract description 34
- 238000000034 method Methods 0.000 claims abstract description 13
- 230000008569 process Effects 0.000 claims abstract description 11
- 239000010865 sewage Substances 0.000 claims description 58
- 238000011001 backwashing Methods 0.000 claims description 7
- 239000003638 chemical reducing agent Substances 0.000 claims description 7
- 238000004140 cleaning Methods 0.000 claims description 5
- 230000002262 irrigation Effects 0.000 claims description 4
- 238000003973 irrigation Methods 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims 2
- 238000006243 chemical reaction Methods 0.000 abstract description 2
- 238000000746 purification Methods 0.000 abstract 1
- 238000011010 flushing procedure Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
本发明公开了一种多级复合型过滤装置，属于过滤净化装置技术领域。本发明的技术方案要点为：一种多级复合型过滤装置，包括多个相互并联连接的罐体，罐体的内部从上到下依次由上隔板和下隔板分隔成砂石介质过滤腔、楔形网过滤腔和清水集水腔，砂石介质过滤腔的侧壁上设有进水口，楔形网过滤腔的侧壁上设有出水口。本发明通过控制不同阀门的启闭可以实现三种运行模式，转换过程简单，根据不同的运行状况选择使用，适用范围更加广泛。
The invention discloses a multi-stage composite filter device, which belongs to the technical field of filter purification devices. The main points of the technical solution of the present invention are: a multi-stage composite filter device, including a plurality of tanks connected in parallel, the inside of the tank is separated from top to bottom by an upper partition and a lower partition to form a sand medium filter. Cavity, wedge-shaped mesh filter cavity and clean water collection cavity, the side wall of the sand medium filter cavity is provided with a water inlet, and the side wall of the wedge-shaped mesh filter cavity is provided with a water outlet. The invention can realize three operation modes by controlling the opening and closing of different valves, the conversion process is simple, and the valve can be selected and used according to different operation conditions, and the application range is wider.
Description
技术领域 technical field
本发明属于过滤净化装置技术领域，具体涉及一种多级复合型过滤装置。 The invention belongs to the technical field of filtering and purifying devices, and in particular relates to a multi-stage composite filtering device.
背景技术 Background technique
目前，农业灌溉领域上应用的过滤器主要有叠片过滤器、砂石介质过滤器、离心过滤器和网式过滤器等形式，应用时主要采用组合形式过滤，例如砂石介质过滤器配合叠片过滤器、离心过滤器配合叠片过滤器或砂石过滤器配合网式过滤器等。单体过滤器只能够实现单一的过滤功能，组合应用后才能够满足实际过滤需求。但是，组合应用的过滤器组存在许多弊端，过滤级数的增加，必然增加管道连接难度，管件繁杂多样，增加了系统成本，同时增大了设备占用的空间。管件增多，管道增长，水流流道的弯曲，增大了过滤系统的水头损失，使得首部配套水泵功率增加。同时，多级过滤器经过一段时间过滤后，要进行反冲洗，级数越多，单独冲洗所消耗的水越多，增加了冲洗频率的同时也造成了大量的水资源浪费，使得设备的使用效率降低。 At present, the filters used in the field of agricultural irrigation mainly include laminated filters, sand media filters, centrifugal filters and mesh filters. Sheet filter, centrifugal filter with laminated filter or sand filter with mesh filter, etc. A single filter can only achieve a single filtering function, and the actual filtering needs can only be met after combined application. However, there are many disadvantages in the filter group used in combination. The increase in the number of filter stages will inevitably increase the difficulty of pipeline connection, and the variety of pipe fittings will increase the cost of the system and increase the space occupied by the equipment. The increase of pipe fittings, the increase of pipes, and the bending of the water flow path increase the head loss of the filtration system, which increases the power of the first matching water pump. At the same time, after a period of time, the multi-stage filter needs to be backwashed. The more stages there are, the more water will be consumed for separate flushing, which increases the frequency of flushing and also causes a lot of waste of water resources, which makes the use of equipment more efficient. reduce.
发明内容 Contents of the invention
本发明为克服现有技术的不足而提供了一种将砂石介质过滤器与楔形网自清洗过滤器组合起来的多级复合型过滤装置。 The present invention provides a multi-stage composite filter device combining a sand medium filter and a wedge-shaped net self-cleaning filter in order to overcome the deficiencies of the prior art.
本发明为解决上述技术问题采用如下技术方案，一种多级复合型过滤装置，其特征在于包括多个相互并联连接的罐体，罐体的内部从上到下依次由上隔板和下隔板分隔成砂石介质过滤腔、楔形网过滤腔和清水集水腔，其中砂石介质过滤腔的上方设有与进水口相连通的布水器，进水口与进水口水动三向阀相连，进水口水动三向阀的另外两个接口分别与排污管和进水管相连，砂石介质过滤腔的内部通过腔体侧壁上的装砂孔填充有砂石介质过滤层，在砂石介质过滤层的底部设有一层滤帽，该滤帽固定于上隔板的上侧，与滤帽相对的上隔板上设有过滤孔；楔形网过滤腔位于上隔板与下隔板之间，其中楔形滤网的上端密封，楔形滤网的下端固定于下隔板上，与楔形滤网相对的下隔板上设有过滤孔，楔形网过滤腔的上部设有用于收集砂石介质过滤腔出水的一级过滤集水腔，该一级过滤集水腔与下隔板下方的清水集水腔通过导流管相连通，楔形网过滤腔的侧壁上设有出水口，出水口与出水管相连，出水管与集水仓相连；清水集水腔的顶部设有与下隔板过滤孔相对且与下隔板滑动配合的U型排污管，该U型排污管通过联轴器固定于转轴上，转轴依次穿过楔形网过滤腔和砂石介质过滤腔与罐体顶部的减速机相连，减速机与电机相连，U型排污管与排污总管相连，该排污总管通过设置于清水集水腔底部的轴座延伸至罐体的外部，并且该排污总管通过排污电磁阀与污水池相连；罐体的外侧分别设有上压差开关、下压差开关和控制柜，其中上压差开关的一端通过连接管与砂石介质过滤层上方的砂石介质过滤腔相连通，上压差开关的另一端通过连接管与砂石介质过滤层底部的砂石介质过滤腔相连通，下压差开关的一端通过连接管与楔形滤网的内侧相连通，下压差开关的另一端通过连接管与楔形滤网的外侧相连通，控制柜内设有中央控制器和显示屏，该中央控制器分别通过线路与显示屏、上压差开关、下压差开关、进水口水动三向阀、排污电磁阀和电机相连。 In order to solve the above technical problems, the present invention adopts the following technical scheme, a multi-stage composite filter device, which is characterized in that it includes a plurality of tanks connected in parallel, and the inside of the tank is sequentially composed of an upper partition and a lower partition from top to bottom. The plate is divided into a sand medium filter chamber, a wedge mesh filter chamber and a clear water collection chamber, wherein a water distributor connected to the water inlet is arranged above the sand medium filter chamber, and the water inlet is connected to the water inlet hydraulic three-way valve , the other two ports of the hydraulic three-way valve at the water inlet are respectively connected to the sewage pipe and the water inlet pipe, and the inside of the sand medium filter chamber is filled with a sand medium filter layer through the sand hole on the side wall of the chamber, and the sand medium The bottom of the medium filter layer is provided with a filter cap, which is fixed on the upper side of the upper partition, and the upper partition opposite to the filter cap is provided with filter holes; the wedge-shaped mesh filter chamber is located between the upper partition and the lower partition. Between them, the upper end of the wedge-shaped filter is sealed, the lower end of the wedge-shaped filter is fixed on the lower partition, and the lower partition opposite to the wedge-shaped filter is provided with a filter hole, and the upper part of the wedge-shaped filter chamber is provided with a sand medium The first-stage filter water collection chamber for the water outlet of the filter chamber. The first-stage filter water collection chamber is connected with the clear water collection chamber below the lower partition through a diversion tube. The side wall of the wedge-shaped mesh filter chamber is provided with a water outlet. It is connected with the outlet pipe, and the outlet pipe is connected with the water collection bin; the top of the clean water collection chamber is provided with a U-shaped sewage pipe that is opposite to the filter hole of the lower partition and is slidingly fitted with the lower partition. The U-shaped sewage pipe passes through the coupling Fixed on the rotating shaft, the rotating shaft passes through the wedge-shaped mesh filter cavity and the sand medium filter cavity in turn to connect with the reducer on the top of the tank, the reducer is connected with the motor, the U-shaped sewage pipe is connected with the sewage main pipe, and the sewage main pipe is installed in the clean water The shaft seat at the bottom of the water collection chamber extends to the outside of the tank, and the sewage main pipe is connected to the sewage pool through the sewage solenoid valve; the outer side of the tank is respectively equipped with an upper differential pressure switch, a lower differential pressure switch and a control cabinet. One end of the differential switch communicates with the sand medium filter cavity above the sand medium filter layer through a connecting pipe, the other end of the upper differential pressure switch communicates with the sand medium filter cavity at the bottom of the sand medium filter layer through a connecting tube, and the lower One end of the differential pressure switch communicates with the inner side of the wedge-shaped filter through a connecting pipe, and the other end of the lower differential pressure switch communicates with the outer side of the wedge-shaped filter through a connecting pipe. There is a central controller and a display screen in the control cabinet. The controller is respectively connected with the display screen, the upper differential pressure switch, the lower differential pressure switch, the hydraulic three-way valve of the water inlet, the sewage discharge electromagnetic valve and the motor through lines.
进一步限定，所述的罐体底部设有泄水阀门，清水集水腔的侧壁上设有检修孔，罐体的底部设有支撑架。 It is further defined that a drain valve is provided at the bottom of the tank, an inspection hole is provided on the side wall of the clear water collection chamber, and a support frame is provided at the bottom of the tank.
本发明所述的多级复合型过滤装置的具体运行过程为：首先将多个罐体通过进水管和出水管实现并联连接，正常过滤过程，由中央控制器控制切换进水口水动三向阀开启进水方向通道，底部电磁排污阀处于关闭状态，水通过布水器分布于砂石介质过滤层进行一级过滤，过滤后的水经过滤帽进入一级过滤集水腔，然后通过导流管进入清水集水腔，水通过楔形滤网过滤后进入楔形网过滤腔，再由楔形网过滤腔侧壁上的出水口排入出水管，各个罐体的出水口通过出水管汇集至集水仓，最后由集水仓进入下一级过滤或者直接通往灌溉管网；楔形滤网的反冲洗过程，通过下压差开关报警由中央控制器控制待清洗罐体的进水口水动三向阀关闭，排污电磁阀开启，与待清洗罐体并联的其它罐体的部分出水由待清洗罐体的出水口进入楔形网过滤腔，通过反冲洗楔形滤网将附着在楔形滤网内壁上的杂质冲洗掉并由U型排污管和排污总管排出，通过中央控制器控制电机带动U型排污管旋转以完成不同楔形滤网的清洗过程；砂石介质过滤层的反冲洗过程，通过上压差开关报警由中央控制器将待清洗罐体的进水口水动三向阀与排污管相连通的通道切换至开启状态，进水通道处于关闭状态，底部排污电磁阀处于关闭状态，与待清洗罐体并联的其它罐体的部分出水由待清洗罐体的出水口进入楔形网过滤腔，再由楔形网过滤腔进入清水集水腔，然后通过导流管进入一级过滤集水腔，在滤帽的配水作用下对砂石介质过滤层进行清洗，污水通过砂石介质过滤腔侧壁上的进水口进入排污管。 The specific operation process of the multi-stage composite filter device described in the present invention is as follows: firstly, multiple tanks are connected in parallel through the water inlet pipe and the water outlet pipe, and the normal filtration process is controlled by the central controller to switch the hydraulic three-way valve at the water inlet. Open the water inlet channel, the bottom electromagnetic drain valve is closed, the water is distributed on the sand medium filter layer through the water distributor for primary filtration, the filtered water enters the primary filter water collection chamber through the filter cap, and then passes through the diversion The pipe enters the clear water collection chamber, the water is filtered through the wedge-shaped filter, and then enters the wedge-shaped filter chamber, and then is discharged into the outlet pipe through the outlet on the side wall of the wedge-shaped filter chamber, and the water outlets of each tank are collected to the water collection through the outlet pipe. Finally, the water collection warehouse enters the next level of filtration or directly leads to the irrigation pipe network; the backwashing process of the wedge-shaped filter screen, through the lower differential pressure switch alarm, the central controller controls the water flow of the water inlet of the tank to be cleaned in three directions The valve is closed, the sewage solenoid valve is opened, and part of the effluent of other tanks connected in parallel with the tank to be cleaned enters the wedge-shaped filter chamber from the outlet of the tank to be cleaned, and the wedge-shaped filter is backwashed to remove the water that is attached to the inner wall of the wedge-shaped filter. The impurities are washed away and discharged by the U-shaped sewage pipe and the sewage main pipe. The central controller controls the motor to drive the U-shaped sewage pipe to rotate to complete the cleaning process of different wedge-shaped filters; Switch alarm The central controller switches the channel connecting the water inlet water three-way valve of the tank to be cleaned and the sewage pipe to the open state, the water inlet channel is closed, the bottom sewage solenoid valve is closed, and the tank to be cleaned Part of the water from other tanks connected in parallel enters the wedge-shaped mesh filter cavity from the outlet of the tank to be cleaned, and then enters the clear water collection cavity through the wedge-shaped filter cavity, and then enters the first-stage filter water collection cavity through the diversion tube. The sand medium filter layer is cleaned under the action of water distribution of the cap, and the sewage enters the sewage pipe through the water inlet on the side wall of the sand medium filter cavity.
本发明与现有技术相比具有以下优点：过滤装置体积小、减少了设备用地的土建投资；过滤装置清洗时无需停水，解决了单罐砂石过滤器不能清洗的问题；通过控制不同阀门的启闭可以实现三种运行模式，转换过程简单，根据不同的水质状况选择使用，适用范围更加广泛。 Compared with the prior art, the present invention has the following advantages: the volume of the filter device is small, and the civil construction investment of the equipment land is reduced; the filter device does not need to stop water when cleaning, which solves the problem that the single-tank gravel filter cannot be cleaned; by controlling different valves The opening and closing can realize three operation modes, the conversion process is simple, and it can be used according to different water quality conditions, and the scope of application is wider.
附图说明 Description of drawings
图1是本发明的外部结构示意图； Fig. 1 is a schematic diagram of the external structure of the present invention;
图2是本发明中楔形网过滤腔的横向剖视图。 Fig. 2 is a transverse cross-sectional view of the wedge-shaped mesh filter cavity in the present invention.
图面说明：1、罐体，2、上隔板，3、下隔板，4、砂石介质过滤腔，5、楔形网过滤腔，6、清水集水腔，7、进水口，8、布水器，9、装砂孔，10、滤帽，11、楔形滤网，12、一级过滤集水腔，13、导流管，14、出水口，15、U型排污管，16、转轴，17、减速机，18、电机，19、排污总管，20、轴座，21、排污电磁阀，22、泄水阀门，23、检修孔，24、支撑架。 Drawing description: 1. Tank body, 2. Upper partition, 3. Lower partition, 4. Sand medium filter chamber, 5. Wedge mesh filter chamber, 6. Clean water collection chamber, 7. Water inlet, 8. Water distributor, 9, sand filling hole, 10, filter cap, 11, wedge-shaped filter screen, 12, primary filter water collection chamber, 13, diversion pipe, 14, water outlet, 15, U-shaped sewage pipe, 16, Rotating shaft, 17, reducer, 18, motor, 19, sewage main, 20, shaft seat, 21, sewage solenoid valve, 22, drain valve, 23, inspection hole, 24, support frame.
具体实施方式 Detailed ways
结合附图详细描述本发明的技术方案。如图1-2所示，一种多级复合型过滤装置，包括多个相互并联连接的罐体1，罐体1的内部从上到下依次由上隔板2和下隔板3分隔成砂石介质过滤腔4、楔形网过滤腔5和清水集水腔6，其中砂石介质过滤腔4的上方设有与进水口7相连通的布水器8，进水口7与进水口水动三向阀相连，进水口水动三向阀的另外两个接口分别与排污管和进水管相连，砂石介质过滤腔4的内部通过腔体侧壁上的装砂孔9填充有砂石介质过滤层，在砂石介质过滤层的底部设有一层滤帽10，该滤帽10固定于上隔板2的上侧，与滤帽10相对的上隔板2上设有过滤孔；楔形网过滤腔5位于上隔板2与下隔板3之间，其中楔形滤网11的上端密封，楔形滤网11的下端固定于下隔板3上，与楔形滤网11相对的下隔板3上设有过滤孔，楔形网过滤腔5的上部设有用于收集砂石介质过滤腔4出水的一级过滤集水腔12，该一级过滤集水腔12与下隔板3下方的清水集水腔6通过导流管13相连通，楔形网过滤腔5的侧壁上设有出水口14，出水口14与出水管相连，出水管与集水仓相连；清水集水腔6的顶部设有与下隔板3过滤孔相对且与下隔板3滑动配合的U型排污管15，该U型排污管15通过联轴器固定于转轴16上，转轴16依次穿过楔形网过滤腔5和砂石介质过滤腔4与罐体1顶部的减速机17相连，减速机17与电机18相连，U型排污管15与排污总管19相连，该排污总管19通过设置于清水集水腔6底部的轴座20延伸至罐体1的外部，并且该排污总管19通过排污电磁阀21与污水池相连，罐体1底部设有泄水阀门22，清水集水腔6的侧壁上设有检修孔23，罐体的底部设有支撑架24；罐体的外侧分别设有上压差开关、下压差开关和控制柜，其中上压差开关的一端通过连接管与砂石介质过滤层上方的砂石介质过滤腔相连通，上压差开关的另一端通过连接管与砂石介质过滤层底部的砂石介质过滤腔相连通，下压差开关的一端通过连接管与楔形滤网的内侧相连通，下压差开关的另一端通过连接管与楔形滤网的外侧相连通，控制柜内设有中央控制器和显示屏，该中央控制器分别通过线路与显示屏、上压差开关、下压差开关、进水口水动三向阀、排污电磁阀和电机相连。 The technical scheme of the present invention is described in detail in conjunction with the accompanying drawings. As shown in Figure 1-2, a multi-stage composite filter device includes a plurality of tanks 1 connected in parallel. Sand medium filter cavity 4, wedge-shaped mesh filter cavity 5 and clear water collection cavity 6, wherein the top of the sand medium filter cavity 4 is provided with a water distributor 8 connected with the water inlet 7, and the water inlet 7 is connected with the water inlet The three-way valve is connected, and the other two ports of the water inlet hydraulic three-way valve are respectively connected with the sewage pipe and the water inlet pipe. The inside of the sand medium filter chamber 4 is filled with sand medium through the sand hole 9 on the side wall of the chamber. The filter layer is provided with a layer of filter cap 10 at the bottom of the sand medium filter layer, and the filter cap 10 is fixed on the upper side of the upper partition 2, and the upper partition 2 opposite to the filter cap 10 is provided with filter holes; The filter cavity 5 is located between the upper partition 2 and the lower partition 3, wherein the upper end of the wedge-shaped filter screen 11 is sealed, the lower end of the wedge-shaped filter screen 11 is fixed on the lower partition 3, and the lower partition 3 opposite to the wedge-shaped filter screen 11 The upper part of the wedge-shaped mesh filter chamber 5 is provided with a first-stage filter water collection chamber 12 for collecting water from the sand medium filter chamber 4. The water chamber 6 is communicated with by a guide pipe 13, and the side wall of the wedge-shaped mesh filter chamber 5 is provided with a water outlet 14, and the water outlet 14 is connected with the water outlet pipe, and the water outlet pipe is connected with the water collection bin; the top of the clear water collection chamber 6 is provided with There is a U-shaped sewage pipe 15 opposite to the filter hole of the lower partition 3 and slidingly matched with the lower partition 3. The U-shaped sewage pipe 15 is fixed on the rotating shaft 16 through a coupling, and the rotating shaft 16 passes through the wedge-shaped mesh filter chamber 5 in turn. The sand medium filter chamber 4 is connected with the reducer 17 on the top of the tank body 1, the reducer 17 is connected with the motor 18, and the U-shaped sewage pipe 15 is connected with the sewage main pipe 19, and the sewage main pipe 19 is arranged at the bottom of the clear water collection chamber 6 The shaft seat 20 of the shaft extends to the outside of the tank body 1, and the sewage main pipe 19 is connected with the sewage pool through the sewage discharge solenoid valve 21, the bottom of the tank body 1 is provided with a drain valve 22, and the side wall of the clear water collection chamber 6 is provided with a maintenance valve. hole 23, the bottom of the tank body is provided with a support frame 24; the outside of the tank body is respectively provided with an upper differential pressure switch, a lower differential pressure switch and a control cabinet, wherein one end of the upper differential pressure switch is connected to the upper part of the sand medium filter layer through the connecting pipe. The other end of the upper differential pressure switch is connected to the sand medium filter cavity at the bottom of the sand medium filter layer through a connecting pipe, and one end of the lower differential pressure switch is connected to the inner side of the wedge-shaped filter screen through a connecting pipe. The other end of the lower differential pressure switch is connected to the outside of the wedge-shaped filter through a connecting pipe. There is a central controller and a display screen in the control cabinet. The central controller is connected to the display screen, upper differential pressure switch, The lower differential pressure switch, the hydraulic three-way valve at the water inlet, and the sewage discharge electromagnetic valve are connected with the motor.
本发明运行过程中，首先将多个罐体通过出水口水动三向阀和回水管实现并联连接以实现以下三种运行模式： During the operation of the present invention, firstly, multiple tanks are connected in parallel through the hydraulic three-way valve at the water outlet and the return pipe to realize the following three operating modes:
（1）过滤模式 (1) Filter mode
正常过滤过程，由中央控制器控制切换进水口水动三向阀开启进水方向通道，底部电磁排污阀处于关闭状态，水通过布水器分布于砂石介质过滤层进行一级过滤，过滤后的水经过滤帽进入一级过滤集水腔，然后通过导流管进入清水集水腔，水通过楔形滤网过滤后进入楔形网过滤腔，再由楔形网过滤腔侧壁上的出水口排入出水管，各个罐体的出水口通过出水管汇集至集水仓，最后由集水仓进入下一级过滤或者直接通往灌溉管网； In the normal filtration process, the central controller controls the switching of the water inlet hydraulic three-way valve to open the water inlet direction channel, the bottom electromagnetic sewage valve is in the closed state, and the water is distributed on the sand medium filter layer through the water distributor for primary filtration. After filtration The water enters the primary filter water collection chamber through the filter cap, and then enters the clear water collection chamber through the diversion pipe. The water is filtered through the wedge-shaped filter screen and then enters the wedge-shaped screen filter chamber, and then is discharged from the water outlet on the side wall of the wedge-shaped screen filter chamber. Inlet and outlet pipes, the water outlets of each tank are collected to the water collection bin through the water outlet pipe, and finally enter the next level of filtration from the water collection bin or directly lead to the irrigation pipe network;
（2）楔形滤网的反清洗模式 (2) Backwashing mode of wedge-shaped filter
楔形滤网的反冲洗过程，通过下压差开关报警由中央控制器控制待清洗罐体的进水口水动三向阀关闭，排污电磁阀开启，与待清洗罐体并联的其它罐体的部分出水由待清洗罐体的出水口进入楔形网过滤腔，通过反冲洗楔形滤网将附着在楔形滤网内壁上的杂质冲洗掉并由U型排污管和排污总管排出，通过中央控制器控制电机带动U型排污管旋转以完成不同楔形滤网的清洗过程； In the backwashing process of the wedge-shaped filter, the central controller controls the water inlet hydraulic three-way valve of the tank to be cleaned to close through the lower differential pressure switch, and the sewage solenoid valve to open. The parts of other tanks connected in parallel with the tank to be cleaned The effluent enters the wedge-shaped filter chamber from the outlet of the tank to be cleaned, washes away the impurities attached to the inner wall of the wedge-shaped filter through the backwash wedge-shaped filter, and discharges it through the U-shaped sewage pipe and the sewage main pipe, and controls the motor through the central controller Drive the U-shaped sewage pipe to rotate to complete the cleaning process of different wedge-shaped filters;
（3）砂石介质过滤层的反清洗模式 (3) Backwashing mode of sand media filter layer
砂石介质过滤层的反冲洗过程，通过上压差开关报警由中央控制器将待清洗罐体的进水口水动三向阀与排污管相连通的通道切换至开启状态，进水通道处于关闭状态，底部排污电磁阀处于关闭状态，与待清洗罐体并联的其它罐体的部分出水由待清洗罐体的出水口进入楔形网过滤腔，再由楔形网过滤腔进入清水集水腔，然后通过导流管进入一级过滤集水腔，在滤帽的配水作用下对砂石介质过滤层进行清洗，污水通过砂石介质过滤腔侧壁上的进水口进入排污管。 In the backwashing process of the sand medium filter layer, the central controller switches the channel connecting the water three-way valve of the water inlet of the tank to be cleaned with the sewage pipe to the open state through the upper differential pressure switch alarm, and the water inlet channel is closed. state, the bottom sewage solenoid valve is closed, and part of the water from other tanks connected in parallel with the tank to be cleaned enters the wedge-shaped mesh filter chamber from the outlet of the tank to be cleaned, and then enters the clean water collection chamber from the wedge-shaped mesh filter chamber, and then Through the diversion pipe, it enters the first-stage filter water collection chamber, and the sand media filter layer is cleaned under the water distribution action of the filter cap, and the sewage enters the sewage pipe through the water inlet on the side wall of the sand media filter chamber.
以上显示和描述了本发明的基本原理，主要特征和优点，在不脱离本发明精神和范围的前提下，本发明还有各种变化和改进，这些变化和改进都落入要求保护的本发明的范围。 The basic principles, main features and advantages of the present invention have been shown and described above. On the premise of not departing from the spirit and scope of the present invention, the present invention also has various changes and improvements, and these changes and improvements all fall into the claimed invention. range.
Claims (4)
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