CN2297236Y - Film equipment with negative pressure washing function - Google Patents
Film equipment with negative pressure washing function Download PDFInfo
- Publication number
- CN2297236Y CN2297236Y CN 96241367 CN96241367U CN2297236Y CN 2297236 Y CN2297236 Y CN 2297236Y CN 96241367 CN96241367 CN 96241367 CN 96241367 U CN96241367 U CN 96241367U CN 2297236 Y CN2297236 Y CN 2297236Y
- Authority
- CN
- China
- Prior art keywords
- valve
- threeway
- connect
- addition
- another termination
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Fee Related
Links
Images
Abstract
The utility model discloses an improved device for membrane separation, which can cause the membrane device to lie in the process of the membrane separation and can cause the membrane device to lie in the rinsing process. The utility model is composed of a feed pump, a circulating pump, a membrane device, a fluid bath, a pressure vacuum gauge, a valve, a pipeline, etc. The membrane device can play the separation function under the positive pressure through switching the valve, and can obtain the cleaning under the action of the negative pressure.
Description
The utility model relates to the improved film device of a class, particularly a class and is suitable for the film device that charging and emission type and continuous film separate type negative pressure are cleaned.The separation method and the apparatus technology that belong to pellicle.
The existing film device that carries out the negative pressure cleaning of film with pump generally is divided three classes: a class is to cause the negative pressure in film front with the process pump suction, forms the pressure reduction of film positive and negative, makes through the liquid adverse current and cleans film (seeing United States Patent (USP) 4986918); One class is to carry out face negative pressure high flow rate and see through the cleaning (seeing Chinese patent 96106491.9) that the liquid adverse current combines with process pump; The 3rd class is to adopt special scavenging pump, and the inlet of scavenging pump and operation delivery side of pump are coupled together, and conversion makes membrane module can be in the pressure journey of process pump by valve, carries out the film separable programming, can be in the suction journey of scavenging pump again, carries out the negative pressure cleaning procedure of film.The cleaning method of the film that all are above-mentioned and equipment all are to be suitable for the film device of opening a way, or the membrane module plural serial stage mode that connects one-level is done series connection and cleaned.Fail to solve the cleaning problem for charging and emission type and continuous film separate type said method.The plural serial stage method series connection cleaning performance that connects one-level will be affected in addition, and effect was just more weaker when the progression of especially connecting was many.For some media that is difficult to clean, need with other scavenging pump in addition, the size of this class scavenging pump, kind etc. will be done suitable selection and just can get a desired effect.
Existing background technology has following patent documentation by retrieval: the special 5-261537 of Yuanping City (1993), the special 6-32708 of Yuanping City (1994), United States Patent (USP) 4,867,885 etc.About carrying out technology and equipment that the film negative pressure cleans etc., charging and emission type, continuous film separate type, plural serial stage tandem type etc. do not appear in the newspapers.
The purpose of this utility model is to provide a kind of film device with negative pressure cleaning function, can make membrane module be in the liquid-liquid or the solid-liquid separation process of film by valve conversion, can be in the cleaning process of film again.
The utility model realizes that to add valve and connecting line and rinse bath between pump and membrane module in charging and emission type flow process carrying out the film negative pressure with circulating pump cleans.Add valve and pipeline in the continuous film separation process between circulating pumps at different levels and membrane module respectively, all grades all use the mode of a rinse bath to realize carrying out with circulating pump that the film negative pressure cleans.In plural serial stage film separation process, modes of carrying out the negative pressure cleaning respectively at different levels are realized the negative pressure cleaning of film with process pump.The film negative pressure cleaning performance of selecting for use satisfactory pump size and kind to realize ideal under the film device situation of special scavenging pump is being arranged.
The invention provides 6 in accompanying drawing, wherein:
Fig. 1 charging and emission type flow process film negative pressure cleaning device
Fig. 2 continuous film separation process film negative pressure cleaning device
The multistage film separation process of Fig. 3 film negative pressure cleaning device
Fig. 4 carries out the device of the negative pressure cleaning of film with the scavenging pump reverse flow
Fig. 5 with scavenging pump forward stream carry out the device that the negative pressure of film is cleaned
The full filter of Fig. 6 air pressure
Below in conjunction with 5 embodiment of description of drawings.
Embodiment 1
See also accompanying drawing 1, be connected in the following manner between membrane module of the present utility model and feed pump and the circulating pump and implement.The entrance and exit of feed pump [101] connect material respectively liquid bath [119] and valve [102], another termination threeway [103] of valve [102], the two ends in addition of threeway [103] connect the inlet of threeway [117] and circulating pump [104] respectively, the outlet of circulating pump [104] connects three grooves [105], the two ends in addition of threeway [105] connect valve [106] and valve [109] respectively, another termination of valve [109] reaches the pipeline that cleans liquid bath [111] bottom, another termination four-way [107] of valve [106], three ends in addition of four-way [107] connect pressure vacuum meter [108] respectively, feed liquid communication port of membrane module [112] and valve [110], another termination of valve [110] reach the pipeline that cleans liquid bath [111] bottom.Another feed liquid communication port of membrane module [112] connects threeway [115], the two ends in addition of threeway [115] connect pressure vacuum meter [116] and threeway [117] respectively, the 3rd termination valve [118] of threeway [117], another termination of valve [118] reaches the pipeline of material fluid bath [119] bottom, valve [113] is for seeing through the liquid valve, and [114] are for seeing through liquid bath.
When valve-off [109], [110], carry out the separation process of film when Open valve [102], [106], [113], [118].When valve-off [102], [106], [118], Open valve [109], [110] start circulating pump [104] and then carry out the negative pressure cleaning procedure that adopts circulating pump [104].
Embodiment 2
See also accompanying drawing 2.Continuous film separation process film negative pressure cleaning device is realized as follows, the entrance and exit of feed pump [201] connects material fluid bath [205] and valve [202] respectively, another termination threeway [203] of valve [202], the two ends in addition of threeway [203] connect threeway [206] and threeway [204] respectively, the two ends in addition of threeway [204] connect circulating pump [216] inlet and valve [217] respectively, the outlet of circulating pump [216] connects threeway [215], the two ends in addition of threeway [215] connect valve [212] and valve [214] respectively, another termination of valve [214] reaches the pipeline that cleans liquid bath [237] bottom, another termination four-way [211] of valve [212], three ends in addition of four-way [211] connect pressure vacuum meter [210] respectively, a feed liquid communication port [209] of membrane module [238] and valve [213], another termination of valve [213] reaches the pipeline of rinse bath [237] bottom, the liquid that sees through of membrane module [238] and [239] exports two interfaces that [231] and [233] connect threeway [232] respectively, and the 3rd mouth of threeway [232] is switched to the pipeline through liquid bath [234].Another termination threeway [218] of valve [217], the two ends in addition of threeway [218] connect threeway [229] and threeway [219] respectively, the two ends in addition of threeway [229] connect a feed liquid communication port [228] of pressure vacuum meter [230] and membrane module [239] respectively, the two ends in addition of threeway [219] connect circulating pump [220] and valve [235] respectively, the other end of valve [235] is switched to the pipeline of concentrated liquid bath [236], the outlet of circulating pump [220] connects threeway [221], the two ends in addition of threeway [221] connect valve [222] and valve [223] respectively, and another termination of valve [223] reaches the pipeline of rinse bath [237] bottom.Another termination four-way [225] of valve [222], three ends in addition of four-way [225] connect another feed liquid communication port [227] and the valve [224] of pressure vacuum meter [226], membrane module [239] respectively, and another termination of valve [224] reaches the pipeline of rinse bath [237] bottom.
When valve-off [213], [214], [223], [224], Open valve [202], [212], [217], [222], [235], enable feed pump [201] and circulating pump [216] and [220] and then implement the film separable programming, then implement to adopt the negative pressure cleaning process of circulating pump [216] and circulating pump [220] when valve-off [202], [217], [235], [212], [222], startup circulating pump [216], [220].
Above-mentioned continuous film separation process can connect circulating pump and membrane module as required again and make to concentrate liquid measure and cycles of concentration and see through liquid measure and reach requirement.
Embodiment 3
See also accompanying drawing 3.Multistage film separation process film negative pressure cleaning device is realized as follows, the entrance and exit of process pump [301] connects threeway [304] and threeway [308] respectively, the two ends in addition of threeway [304] connect valve [303] and threeway [305] respectively, another termination liquid bath [302] of valve [303], the two ends in addition of threeway [305] connect valve [307] and valve [306] respectively, another termination threeway [310] of valve [307], another termination threeway [323] of valve [306], the two ends in addition of threeway [308] connect threeway [336] and valve [309] respectively, the two ends in addition of threeway [310] connect valve [309] and threeway [311] respectively, the two ends in addition of threeway [311] connect a feed liquid communication port [313] of pressure vacuum meter [312] and membrane module [314] respectively, another feed liquid communication port [316] of membrane module [314] connects threeway [315], the two ends in addition of threeway [315] connect pressure vacuum meter [317] and threeway [337] respectively, the two ends in addition of threeway [337] connect valve [334] and valve [339] respectively, another termination of valve [334] reaches the pipeline of liquid bath [302] bottom, valve [339] connects and reaches the pipeline that cleans liquid bath [340], the two ends in addition of threeway [336] connect valve [338] and valve [342] respectively, the pipeline that connects valve [338] other end reaches the bottom of cleaning liquid bath [340], the pipeline that connects valve [342] reaches liquid bath [344] bottom, membrane module [314] sees through liquid outlet [318] and connects valve [319], another termination threeway [320] of valve [319], another termination that the in addition two ends of threeway [320] connect valve [321] and threeway [323] valve [321] respectively reaches the pipeline bottom the liquid bath [322], the 3rd termination valve [324] of threeway [323], another termination threeway [325] of valve [324], the two ends in addition of threeway [325] connect a feed liquid communication port [327] of pressure vacuum meter [326] and membrane module [328] respectively, another feed liquid communication port [329] of membrane module [328] connects threeway [330], the two ends in addition of threeway [330] connect pressure vacuum meter [331] and threeway [341] respectively, the two ends in addition of threeway [341] connect valve [335] and valve [343] respectively, another termination of valve [335] reaches the pipeline of liquid bath [302] bottom, and another termination of valve [343] reaches the pipeline of liquid bath [344] bottom.
Valve-off [306], [307], [321], [338], [339], [342], [343], pressure and flow velocity are regulated with valve [334], [335] in Open valve [303], [309], [319], [324], then can implement the film separable programming.
When valve-off [303], [309], [306], [319], [321], [324], [332], [334], [335], [342], [343], it is rinse bath and membrane module [314] is made the program that negative pressure is cleaned that Open valve [307], [338], [339] are then implemented with groove [340].
When valve-off [303], [307], [309], [319], [321], [334], [335], [338], [339], it is rinse bath and membrane module [328] is carried out the program that negative pressure is cleaned that Open valve [306], [324], [342], [343] are then implemented with liquid bath [344].
Embodiment 4
See also accompanying drawing 4.Carry out the device of the negative pressure cleaning of film realizes as follows with the scavenging pump reverse flow.The entrance and exit of process pump [401] connect material respectively liquid bath [402] and valve [403], another termination threeway [404] of valve [403], the two ends in addition of threeway [404] connect prefilter [407] and valve [405] respectively, the other end of valve [405] connects the inlet of scavenging pump [406], the outlet of scavenging pump [406] connects valve [418], and the other end of valve [418] connects the pipeline that reaches rinse bath [415] bottom.Another termination threeway [408] of prefilter, the two ends in addition of threeway [408] connect a feed liquid communication port of pressure vacuum meter [409] and membrane module [410] respectively, another feed liquid communication port of membrane module [410] connects threeway [414], the two ends in addition of threeway [414] connect pressure vacuum meter [413] and threeway [417] respectively, the two ends in addition of threeway [417] connect valve [416] and valve [419] respectively, another termination of valve [416] reaches the pipeline of material fluid bath [415] bottom, membrane module [410] see through liquid interface valve [412], another termination of valve [412] reaches the pipeline through liquid bath [411] bottom.
The flow of scavenging pump [406] is 1/20 to 9/10 of a process pump flow, scavenging pump [406] can be any form, when difficult cleansing medium exists, it is pulsed because of reciprocating pump sucks and extrudes that scavenging pump [406] adopts reciprocating pump (or claiming plunger displacement pump), and so easy pollutant the film surface is released.
When valve-off [405], [416], [418], [416], start process pump [401] when Open valve [403], [412], [419] and then carry out the film separation process, when valve-off [403], [419], Open valve [405], [416], [418], [412] start scavenging pump [406] and then implement film negative pressure cleaning procedure.
Embodiment 5
See also accompanying drawing 5.With scavenging pump forward stream carry out the device that the negative pressure of film cleans and realize as follows.The entrance and exit of process pump [501] connects liquid bath [502], valve [503] respectively, another termination threeway [507] of valve [503], the two ends in addition of threeway [507] connect valve [504] and prefilter [508] respectively, and another termination of valve [504] reaches the pipeline of rinse bath [506] bottom.Another termination threeway [509] of prefilter [508], the two ends in addition of threeway [509] connect a feed liquid communication port of pressure vacuum meter [510] and membrane module [511] respectively, another feed liquid communication port of membrane module [511] connects threeway [512], the two ends in addition of threeway [512] connect pressure vacuum meter [513] and threeway [517] respectively, the two ends in addition of threeway [517] connect valve [516] and valve [518] respectively, another termination of valve [516] reaches the pipeline of material fluid bath [502] bottom, the inlet of another termination scavenging pump [519] of valve [518], the outlet of scavenging pump [519] connects valve [505], and another termination of valve [505] reaches the pipeline of rinse bath [506] bottom.
The flow of scavenging pump [519] is 1/20 to 9/10 of process pump [a 501] flow, can be the pump of any pattern, adopts repeatedly pump (or claiming plunger displacement pump) better effects if when film pollutes seriously.
When valve-off [504], [505], [518], the film separation process is then carried out in Open valve [503], [516], [514] when starting process pump [501].When valve-off [503], [516], Open valve [504], [518], [505] start scavenging pump [519] and then carry out film negative pressure cleaning process.
Being connected all between the film device among above-mentioned 5 embodiment, material fluid bath and pump can change following mode into.See also accompanying drawing 6.The two ends of receiver [601] connect pump [606] and threeway [602] respectively, the two ends in addition of threeway [602] connect valve [603] and valve [604] respectively, another termination pneumatic supply of valve [603], the other end of valve [604] liquid bath [605] that connects material, the capacity of hopper is greater than the minimum reduction of feed volume that whole system is moved.When being concentrated to the feed liquid in the system to greatest extent with pump [606], termination of pumping [606], valve-off [604] are opened valve [603], make about 2kg/cm
2Air pressure be added on the feed liquid face in the basin, the feed liquid maximum ratio in the system is separated.
Claims (7)
1. film device with negative pressure cleaning function, comprise pump, valve, prefilter, pressure vacuum meter, threeway, four-way, liquid bath, connecting line, membrane module, it is characterized in that the pressure Cheng Shangyou that membrane module both had been connected on pump is connected on the suction journey of pump, between pump and membrane module, be connected with the valve that to press journey and inhale the journey conversion.
2. by the described film device of claim 1, the entrance and exit that it is characterized in that feed pump [101] connect material respectively liquid bath [119] and valve [102], another termination threeway [103] of valve [102], the two ends in addition of threeway [103] connect the inlet of threeway [117] and circulating pump [104] respectively, the outlet of circulating pump [104] connects threeway [105], the two ends in addition of threeway [105] connect valve [106] and valve [109] respectively, another termination of valve [109] reaches the pipeline that cleans liquid bath [111] bottom, another termination four-way [107] of valve [106], three ends in addition of four-way [107] connect pressure vacuum meter [108] respectively, feed liquid communication port of membrane module [112] and valve [110], another termination of valve [110] reach the pipeline that cleans liquid bath [111] bottom.Another feed liquid communication port of membrane module [112] connects threeway [115], the two ends in addition of threeway [115] connect pressure vacuum meter [116] and threeway [117] respectively, the 3rd termination valve [118] of threeway [117], another termination of valve [118] reaches the pipeline of material fluid bath [119] bottom, valve [113] is for seeing through the liquid valve, and [114] are for seeing through liquid bath.
3. by the described film device of claim 1, the entrance and exit that it is characterized in that feed pump [201] connects material fluid bath [205] and valve [202] respectively, another termination threeway [203] of valve [202], the two ends in addition of threeway [203] connect threeway [206] and threeway [204] respectively, the two ends in addition of threeway [204] connect circulating pump [216] inlet and valve [217] respectively, the outlet of circulating pump [216] connects threeway [215], the two ends in addition of threeway [215] connect valve [212] and valve [214] respectively, another termination of valve [214] reaches the pipeline that cleans liquid bath [237] bottom, another termination four-way [211] of valve [212], three ends in addition of four-way [211] connect pressure vacuum meter [210] respectively, a feed liquid communication port [209] of membrane module [238] and valve [213], another termination of valve [213] reaches the pipeline of rinse bath [237] bottom, the liquid that sees through of membrane module [238] and [239] exports two interfaces that [231] and [233] connect threeway [232] respectively, the 3rd interface of threeway [232] is by seeing through the pipeline of liquid bath [234], another termination threeway [218] of valve [217], the two ends in addition of threeway [218] connect threeway [229] and threeway [219] respectively, the two ends in addition of threeway [229] connect a feed liquid communication port [228] of pressure vacuum meter [230] and membrane module [239] respectively, the two ends in addition of threeway [219] connect circulating pump [220] and valve [235] respectively, the other end of valve [235] is switched to the pipeline of concentrated liquid bath [236], the outlet of circulating pump [220] connects threeway [221], the two ends in addition of threeway [221] connect valve [222] and valve [223] respectively, another termination of valve [223] reaches the pipeline of rinse bath [237] bottom, another termination four-way [225] of valve [222], three ends in addition of four-way [225] connect pressure vacuum meter [226] respectively, another feed liquid communication port [227] and the valve [224] of membrane module [239], another termination of valve [224] are stretched the pipeline of [237] bottom.
4. by the described film device of claim 1, the entrance and exit that it is characterized in that process pump [301] connects threeway [304] and threeway [308] respectively, the two ends in addition of threeway [304] connect valve [303] and threeway [305] respectively, another termination liquid bath [302] of valve [303], the two ends in addition of threeway [305] connect valve [307] and valve [306] respectively, another termination threeway [310] of valve [307], another termination threeway [323] of valve [306], the two ends in addition of threeway [308] connect threeway [336] and valve [309] respectively, the two ends in addition of threeway [310] connect valve [309] and threeway [311] respectively, the two ends in addition of threeway [311] connect a feed liquid communication port [313] of pressure vacuum meter [312] and membrane module [314] respectively, another feed liquid communication port [316] of membrane module [314] connects threeway [315], the two ends in addition of threeway [315] connect pressure vacuum meter [317] and threeway [337] respectively, the two ends in addition of threeway [337] connect valve [334] valve [339] respectively, another termination of valve [334] reaches the pipeline of liquid bath [302] bottom, valve [339] connects and reaches the pipeline that cleans liquid bath [340], the two ends in addition of threeway [336] connect valve [338] and valve [342] respectively, the pipeline that connects valve [338] other end reaches the bottom of cleaning liquid bath [340], the pipeline that connects valve [342] reaches liquid bath [344] bottom, membrane module [314] sees through liquid outlet [318] and connects valve [319], another termination threeway [320] of valve [319], the two ends in addition of threeway [320] connect valve [321] and threeway [323] respectively, another termination of valve [321] reaches the pipeline of liquid bath [322] bottom, the 3rd termination valve [324] of threeway [323], another termination threeway [325] of valve [324], the feed liquid communication port [329] that the two ends in addition of threeway [325] connect pressure vacuum meter [326] and membrane module [328] respectively connects threeway [330], the two ends in addition of threeway [330] connect pressure vacuum meter [331] and threeway [341] respectively, the two ends in addition of threeway [341] connect valve [335] and valve [343] respectively, another termination of valve [335] reaches the pipeline of liquid bath [302] bottom, and another termination of valve [343] reaches the pipeline of liquid bath [344] bottom.
5. by the described film device of claim 1, the entrance and exit that it is characterized in that process pump [401] connect material respectively liquid bath [402] and valve [403], another termination threeway [404] of valve [403], the two ends in addition of threeway [404] connect prefilter [407] and valve [405] respectively, the other end of valve [405] connects the inlet of scavenging pump [406], the outlet of scavenging pump [406] connects valve [418], the other end of valve [418] connects the pipeline that reaches rinse bath [415] bottom, another termination threeway [408] of prefilter, the two ends in addition of threeway [408] connect a feed liquid communication port of pressure vacuum meter [409] and membrane module [410] respectively, another feed liquid communication port of membrane module [410] connects threeway [414], the two ends in addition of threeway [414] connect pressure vacuum meter [413] and threeway [417] respectively, the two ends in addition of threeway [417] connect valve [416] and [419] respectively, another termination of valve [416] reaches the pipeline of material fluid bath [402] bottom, another termination of valve [416] reaches the pipeline of rinse bath [415] bottom, the liquid interface that sees through of membrane module [410] connects valve [412], and another termination of valve [412] reaches the pipeline through liquid bath [411] bottom; Scavenging pump [406] can be the pump of any pattern, and its flow is 1/20 to 9/20 of a process pump flow, and under difficulty cleaning situation, scavenging pump adopts reciprocating pump (or claiming plunger displacement pump).
6. by the described film device of claim 1, the entrance and exit that it is characterized in that process pump [501] connects liquid bath [502] respectively, valve [503], another termination threeway [507] of valve [503], the two ends in addition of threeway [507] connect the prefilter [508] of valve [504] respectively, another termination of valve [504] reaches the pipeline of rinse bath [506] bottom, another termination threeway [509] of prefilter [508], the two ends in addition of threeway [509] connect a feed liquid communication port of pressure vacuum meter [510] and membrane module [511] respectively, another feed liquid communication port of membrane module [511] connects threeway [512], the two ends in addition of threeway [512] connect pressure vacuum meter [513] and threeway [517] respectively, the two ends in addition of threeway [517] connect valve [516] and valve [518] respectively, another termination of valve [516] reaches the pipeline of liquid bath [502] bottom, the inlet of another termination scavenging pump [519] of valve [518], the outlet of scavenging pump [519] connects valve [505], another termination of valve [505] reaches the pipeline of rinse bath [506] bottom, the flow of scavenging pump [519] is 1/20 to 9/10 of process pump [a 501] flow, be the pump of any pattern, when film pollutes seriously, adopt repeatedly pump (or claiming plunger displacement pump).
7. by the described film device of claim 1, it is characterized in that being connected all between material fluid bath and pump can change following mode into, the two ends of receiver [601] connect pump [606] and threeway [602] respectively, the two ends in addition of threeway [602] connect valve [603] and valve [604] respectively, another termination pneumatic supply of valve [603], the other end of valve [604] liquid bath [605] that connects material, the capacity of hopper is greater than the minimum reduction of feed volume that whole system is moved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96241367 CN2297236Y (en) | 1996-10-23 | 1996-10-23 | Film equipment with negative pressure washing function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96241367 CN2297236Y (en) | 1996-10-23 | 1996-10-23 | Film equipment with negative pressure washing function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2297236Y true CN2297236Y (en) | 1998-11-18 |
Family
ID=33915788
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96241367 Expired - Fee Related CN2297236Y (en) | 1996-10-23 | 1996-10-23 | Film equipment with negative pressure washing function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2297236Y (en) |
-
1996
- 1996-10-23 CN CN 96241367 patent/CN2297236Y/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203379689U (en) | Two-phase flow flushing device | |
| EP2347858A3 (en) | Flow control system | |
| CN2297236Y (en) | Film equipment with negative pressure washing function | |
| CN117566984A (en) | Oil sewage bidirectional treatment equipment for ship repair | |
| US4921603A (en) | Anti-clogging apparatus and method for maximal flux and prolonged filtration time | |
| US4859332A (en) | Filter leaf cleaning jet apparatus | |
| CN2636944Y (en) | Self suction back flushing net type filtering apparatus | |
| CN1209178C (en) | Negative-pressure pulsed washing method | |
| CN109806682B (en) | Smoke dust particle filtering device | |
| CN109317389B (en) | Synchronous separator of many particle diameters microplastic in stirring formula deposit or earth | |
| US4968429A (en) | Anti-clogging method for maximal flux and prolonged filtration time | |
| CN107779372B (en) | Filtering system with backflushing device and filtering method | |
| CN1216720A (en) | Membrane separation apparatus able to be cleaned by various kinds of method | |
| CN114180803B (en) | Pump type sewage treatment equipment for separating and discharging sludge | |
| CN2283747Y (en) | Single pump membrane equipment with double membrane device | |
| CN214714761U (en) | Filter for wastewater pretreatment | |
| US4963253A (en) | Anti-clogging and dialysis device for filtration systems | |
| CN2587852Y (en) | Super filtering apparatus for automatic sewage treatment | |
| CN2288001Y (en) | Membrane equipment capable of simultaneously carrying-out operation and washing | |
| CN113457249A (en) | Filter equipment is used in microorganism collection | |
| CN1140325C (en) | Two-way working film separation method and equipment therefor | |
| CN112717698A (en) | Self-cleaning filter device | |
| CN1063674C (en) | Method and apparatus for using operating pump to negative pressure cleaning by semipermeable membrance | |
| CN100500311C (en) | Apparatus for removing impurity from solution cleaning tank | |
| CN101642680B (en) | Concentration technology for zymogen liquid |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |