CN113663372A - Press gas recycling device of press filter and energy-saving diaphragm press filter - Google Patents
Press gas recycling device of press filter and energy-saving diaphragm press filter Download PDFInfo
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- CN113663372A CN113663372A CN202010409846.6A CN202010409846A CN113663372A CN 113663372 A CN113663372 A CN 113663372A CN 202010409846 A CN202010409846 A CN 202010409846A CN 113663372 A CN113663372 A CN 113663372A
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- 238000004064 recycling Methods 0.000 title claims abstract description 25
- 239000000463 material Substances 0.000 claims abstract description 52
- 238000007664 blowing Methods 0.000 claims abstract description 35
- 230000018044 dehydration Effects 0.000 claims abstract description 32
- 238000006297 dehydration reaction Methods 0.000 claims abstract description 32
- 238000011010 flushing procedure Methods 0.000 claims abstract description 28
- 230000007246 mechanism Effects 0.000 claims description 26
- 239000004744 fabric Substances 0.000 claims description 18
- 238000001914 filtration Methods 0.000 claims description 16
- 238000005406 washing Methods 0.000 claims description 16
- 238000003825 pressing Methods 0.000 claims description 13
- 238000000861 blow drying Methods 0.000 claims description 11
- 238000000034 method Methods 0.000 abstract description 19
- 230000008569 process Effects 0.000 abstract description 18
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000004134 energy conservation Methods 0.000 abstract description 5
- 230000009467 reduction Effects 0.000 abstract description 5
- 230000006872 improvement Effects 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 abstract 1
- 239000012065 filter cake Substances 0.000 description 34
- 239000007788 liquid Substances 0.000 description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 238000011084 recovery Methods 0.000 description 10
- 239000000706 filtrate Substances 0.000 description 8
- 238000004140 cleaning Methods 0.000 description 7
- 239000012528 membrane Substances 0.000 description 7
- 239000002002 slurry Substances 0.000 description 7
- 238000007599 discharging Methods 0.000 description 6
- 238000005265 energy consumption Methods 0.000 description 4
- 239000012452 mother liquor Substances 0.000 description 4
- 238000005457 optimization Methods 0.000 description 4
- 230000000717 retained effect Effects 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 239000010720 hydraulic oil Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D25/00—Filters formed by clamping together several filtering elements or parts of such elements
- B01D25/12—Filter presses, i.e. of the plate or plate and frame type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D25/00—Filters formed by clamping together several filtering elements or parts of such elements
- B01D25/32—Removal of the filter cakes
- B01D25/325—Removal of the filter cakes counter-current flushing, e.g. by air bumps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D25/00—Filters formed by clamping together several filtering elements or parts of such elements
- B01D25/32—Removal of the filter cakes
- B01D25/34—Removal of the filter cakes by moving, e.g. rotating, the filter elements
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtration Of Liquid (AREA)
Abstract
The invention discloses a device for recycling press gas of a filter press and an energy-saving diaphragm filter press; the total innovation scheme of the pressed gas recycling device is as follows: the existing two independent processes of squeezing dehydration and back-blowing materials are optimized into a series process of squeezing dehydration and back-blowing materials; with the corresponding improvement pipeline route of the series connection technology of optimizing, with two independent pipelines of present squeeze dehydration pipeline and blowback material pipeline, the innovation is "squeeze dehydration + blowback material" series connection pipeline, and the extension squeezes the exhaust pipe and becomes the gas retrieval and utilization pipeline that squeezes, squeezes the blowback return line of the gas retrieval and utilization material of squeezing the exhaust pipe series connection blowback of squeezing the dehydration, squeezes the gas after the dehydration and is recycled the blowback material, collects "squeeze dehydration + blowback material" function as an organic whole. The energy-saving diaphragm filter press using the device has the advantages of energy conservation, noise reduction and efficiency improvement, saves compressed air for back flushing materials, eliminates the noise pollution caused by squeezing, dewatering and pressure relief, and improves the production efficiency of the filter press.
Description
Technical Field
The invention belongs to the technical field of membrane filter presses, and relates to a gas-saving pipeline device for squeezing dehydration and back flushing materials.
Background
The filter press is a multi-filter chamber primary pressurizing low-pressure (by means of pressure of a pressure pump) filtering device which is operated intermittently; the membrane filter press is a filter press for dehydrating filter cakes by expanding membranes through secondary high pressure (by means of the pressure of compressed air); an energy-saving diaphragm filter press is a mechanical, electrical and hydraulic integrated diaphragm automatic filter press which can save gas or water or electricity; the cloth washing machine mainly comprises a frame, a pressing mechanism, a filtering mechanism, a plate pulling mechanism, a cloth washing mechanism, a hydraulic driving mechanism, a PLC program control system and the like; is suitable for solid-liquid separation of various suspensions. Through a PLC control system, single operation cycle (filter plate compaction, feeding and filtering, washing and purifying, squeezing and dewatering, material back flushing, blow-drying and purifying, plate pulling and cake discharging, and filter cloth cleaning) is automatically completed by one key.
The filtering mechanism is a core mechanism of the filter press and mainly comprises a filtering chamber, a feeding and liquid discharging pipeline device, an air inlet and exhaust pipeline device, a washing (blow-drying) pipeline device and the like; the filter chamber is formed by alternately arranging a plurality of diaphragm filter plates with high-pressure medium holes, filter cloth and box filter plates; the air inlet and exhaust pipeline device comprises a squeezing dewatering pipeline and a back-blowing material pipeline, and the pipelines comprise pipelines, pipe fittings and valves. The squeezing dehydration is to introduce high-pressure fluid or gas medium through a high-pressure medium hole of a filter chamber to swell a diaphragm to squeeze a filter cake for the second time for dehydration, so that the water content of the filter cake is reduced to the lowest point, and the purity of the filter cake and the recovery rate of filtrate are improved; the back-blowing material is residual material retained in the feeding pipeline by back-blowing high-pressure gas, and the residual material is blown back to the stirring position, so that the influence of slurry on the purity of a filter cake and the recovery rate of filtrate is avoided, and the next feeding is facilitated.
The existing filter press air inlet and exhaust pipelines have the following defects: the squeezing dehydration and back-blowing material series pipeline is lacked, the squeezing dehydration and back-blowing material are two independent processes, and the squeezing dehydration pipeline and the back-blowing material pipeline are two independent pipelines; after the filter cake is pressed, dehydrated and pressurized, the pressed gas is directly discharged out of the filter chamber, which wastes energy and generates larger pressure relief noise pollution to influence the production environment; the back flushing material needs to be supplied with high-pressure gas independently, and the energy consumption is large when the air compressor is started repeatedly.
Disclosure of Invention
The invention aims to overcome the defects of air inlet and exhaust pipelines of the existing filter press, solve the technical problems of independent process pipelines, high energy consumption and high pressure relief noise of materials for squeezing dehydration and back flushing, and provide a device for recycling squeezed gas of the filter press and an energy-saving diaphragm filter press.
The invention solves the problems of the prior art and adopts the innovative overall technical scheme that: a press gas recycling device of a press filter (hereinafter referred to as the device) has an innovative overall structure, and compared with the prior art, has the prominent substantive characteristics that the process of pressing dehydration and back flushing materials is optimized, and the two independent processes of the existing pressing dehydration and back flushing materials are optimized into a series process of pressing dehydration plus (additionally) back flushing materials; the pipeline path is improved corresponding to the optimized series connection process, the existing two independent pipelines of a squeezing dewatering pipeline and a back-blowing material pipeline are innovated to be squeezing dewatering and back-blowing material series pipelines, a squeezing exhaust pipeline is prolonged to be a squeezing gas recycling pipeline, the squeezing gas recycling pipeline is connected with a back-blowing return pipeline, namely the squeezing dewatering squeezing exhaust pipeline is connected with the back-blowing return pipeline of the back-blowing material in series, the squeezing dewatering squeezing gas is recycled for back-blowing materials, and the device integrates the functions of squeezing dewatering and back-blowing materials, so that the purposes of energy conservation and noise reduction, gas conservation and electricity saving and pressure relief noise elimination are achieved.
The device has the specific design scheme that: the device mainly comprises main feed line, vice feed line, compressed air inlet, squeezes the inlet line, squeezes the exhaust pipe way (squeeze gaseous retrieval and utilization pipeline), blowback return line, blowback (weather) inlet line, and each pipeline includes pipeline, pipe fitting, valve. The lower end of the main feeding pipeline is connected with a pressure pump, and the upper end of the main feeding pipeline is connected with a thrust plate feeding hole; the lower end of the auxiliary feeding pipeline is connected with the main feeding pipeline, and the upper end of the auxiliary feeding pipeline is connected with a feed hole of the pressing plate; the lower end of the squeezing air inlet pipeline is connected with an air compressor, and the upper end of the squeezing air inlet pipeline is connected with an air inlet of a thrust plate; the upper end of the squeezing exhaust pipeline is connected with a pressure relief valve at the upper end of the squeezing air inlet pipeline, and the lower end of the squeezing exhaust pipeline is connected with a back flushing return pipeline; the back-blowing return pipeline is communicated with the main feeding pipeline; the left end of the back blowing (blow-drying) air inlet pipeline is connected with the lower end of the squeezing air inlet pipeline, and the right end of the back blowing (blow-drying) air inlet pipeline is connected with the lower end of the auxiliary feeding pipeline; when the filter cake needs to be dried and purified, compressed air is input through a back blowing (drying) air inlet pipeline, and the air flows through and dries the residual washing liquid in the filter cake particle seams, so that the water content of the filter cake is reduced, and the purity of the filter cake and the recovery rate of mother liquor are improved.
The principle of recycling the pressed gas is as follows: after the filter cake is squeezed and dehydrated, the pressure release valve is automatically opened, the squeezed gas enters a back-flushing return pipeline through a squeezing exhaust pipeline (squeezing gas recycling pipeline), the squeezed gas is used for back-flushing residual materials remained in the feeding pipeline and is blown back to the stirring position of the slurry tank, the slurry is prevented from influencing the purity of the filter cake and the recovery rate of filtrate, and the next feeding is facilitated; meanwhile, after being squeezed, the gas effectively eliminates pressure relief noise through a large feeding pipeline. Therefore, the technical problems of independent process pipelines, high energy consumption and high pressure relief noise of the material squeezing dehydration and back flushing are solved; due to the optimization of the process, the process gap time is shortened, and the production efficiency is improved.
The invention also provides an energy-saving diaphragm filter press, which uses the device for reusing the pressed gas of the filter press; the filter press mainly comprises a frame, a pressing mechanism, a filtering mechanism, a plate pulling mechanism, a cloth washing mechanism, a hydraulic driving mechanism, a PLC program control system and the like; the filtering mechanism comprises a squeezing gas recycling device and integrates the functions of squeezing and dehydrating and back flushing materials. The common technical part is that according to the current standard of China' Van filter press and plate-and-frame filter press part 1: type and basic parameters JB/T4333.1-2013, part 2 of filter presses for chamber and plate and frame: technical conditions JB/T4333.2-2013 part 4 of filter presses for chamber and plate and frame: the membrane filter plate is designed in JB/T4333.4-2013.
The device for recycling the pressed gas of the filter press has the advantages of process optimization, energy conservation and noise reduction; the beneficial effects are that compressed air for the blowback material is ingeniously saved, the noise pollution of squeezing dehydration decompression is effectively eliminated, the production efficiency of the filter press is further improved, and the blank of the series process of squeezing dehydration and blowback material of the filter press in China is filled.
Drawings
FIG. 1 is a schematic front view of a device for recycling a pressing gas in a filter press according to the present invention.
FIG. 2 is a schematic view of the assembly of the energy-saving membrane filter press using a compressed gas recycling apparatus (side surface) according to the present invention.
Reference numerals: the method comprises the following steps of 1-main feeding pipeline, 2-auxiliary feeding pipeline, 3-squeezing air inlet pipeline, 4-squeezing air outlet pipeline (squeezing gas recycling pipeline), 5-compressed air inlet, 6-reverse blowing return pipeline, 7-reverse blowing (blow-drying) air inlet pipeline, 8-hydraulic oil cylinder (push-pull oil cylinder), 9-diaphragm filter plate (box plate and diaphragm plate), 10-thrust plate (fixed head plate) and 11-pressing plate (movable tail plate).
Detailed Description
The technical solution of the embodiment of the present invention will be described below with reference to the accompanying drawings of the apparatus for reusing a pressed gas in a filter press and an energy-saving membrane filter press according to the present invention, and the described embodiment is only a preferred part of the embodiment of the present invention, but not all of the embodiments. All other embodiments, such as devices with the same principle and similar structure, which are connected in series with the squeezing dewatering and back-blowing material pipeline, are made by those skilled in the art without any inventive property based on the embodiments of the present invention, and all such embodiments belong to the protection scope of the present invention.
Example 1
The utility model provides a filter press squeezes gaseous device of recycling, the overall embodiment of innovation is, with current squeeze dehydration pipeline and blowback material pipeline twice single pipeline, the innovation is squeezing dehydration and blowback material series pipeline, and the extension squeezes exhaust duct 4 and becomes to squeeze gaseous retrieval and utilization pipeline, squeezes gaseous retrieval and utilization pipeline 4 and connects blowback return line 6, squeezes the gaseous blowback material of recycling behind the dehydration, collects "squeeze dehydration + blowback material" function as an organic whole. The device mainly comprises main feed line 1, vice feed line 2, squeeze air inlet pipeline 3, squeeze exhaust pipe (squeeze gas recycling pipeline) 4, blowback return line 6, compressed air inlet 5, blowback (weather) air inlet pipeline 7, and each pipeline includes pipeline, pipe fitting, valve.
Assembling the device: the lower end of the main feeding pipeline 1 is connected with a pressure pump, and the upper end of the main feeding pipeline is connected with a feeding hole of a thrust plate 10; the lower end of the auxiliary feeding pipeline 2 is connected with the main feeding pipeline 1, and the upper end of the auxiliary feeding pipeline is connected with a feeding hole of the pressing plate 11; the lower end of the squeezing air inlet pipeline 3 is connected with an air compressor, and the upper end of the squeezing air inlet pipeline is connected with an air inlet of a thrust plate 10; the upper end of the squeezing exhaust pipeline 4 is connected with a pressure relief valve at the upper end of the squeezing air inlet pipeline 3, and the lower end of the squeezing exhaust pipeline is connected with a back flushing return pipeline 6; the back-blowing return pipeline 6 is communicated with the main feeding pipeline 1; the left end of the back blowing (blow-drying) air inlet pipeline 7 is connected with the lower end of the squeezing air inlet pipeline 3, and the right end is connected with the lower end of the auxiliary feeding pipeline 2.
The working process of the device is as follows: (1) squeezing and dewatering: high-pressure gas is input into the filter chamber through a compressed air inlet 5, and the filter cake is secondarily squeezed by the inflatable diaphragm to be dehydrated, so that the water content of the filter cake is reduced to the lowest point, and the purity of the filter cake and the recovery rate of filtrate are improved; (2) back flushing the materials: after the filter cake is squeezed and dehydrated, a pressure release valve on a squeezing air inlet pipeline 3 is automatically opened, squeezed gas enters a back flushing return pipeline 6 through a squeezing exhaust pipeline (squeezing gas recycling pipeline) 4, and the squeezed gas is used for back flushing residual materials retained in a feeding pipeline 1 and is blown back to a slurry pond, so that the influence of slurry on the purity of the filter cake and the recovery rate of filtrate is avoided, and the next feeding is facilitated; meanwhile, the pressure relief noise of the squeezed gas is effectively eliminated through a large feeding pipeline 1; (3) when the filter cake needs to be dried and purified, high-pressure gas is input through a back-blowing (drying) air inlet pipeline 7, and the air flows through and dries the residual washing liquid in the particle seams of the filter cake, so that the water content of the filter cake is reduced, and the purity of the filter cake and the recovery rate of mother liquor are improved.
The recycling device for the pressed gas of the filter press has the advantages of process optimization, energy conservation and noise reduction through repeated tests; the technical problems of independent process pipelines, high energy consumption and high pressure relief noise of materials for squeezing dehydration and back flushing are solved; due to the optimization of the process, the process gap time is shortened, and the production efficiency is improved.
Example 2
An energy-saving diaphragm filter press, which uses the device for reusing the pressed gas of the filter press; the filter press is an automatic filter press integrating machine, electricity and liquid, and mainly comprises a frame, a pressing mechanism, a filtering mechanism, a plate pulling mechanism, a cloth washing mechanism, a hydraulic driving mechanism, a PLC program control system and the like. The filtering mechanism is a core mechanism of the filter press and mainly comprises a filtering chamber, a feeding and liquid discharging pipeline device, a pressed gas recycling device (the invention), a washing pipeline device and the like; the filter chamber is formed by alternately arranging a plurality of diaphragm filter plates 9 with high-pressure medium holes, filter cloth and box filter plates to form a series filter chamber; each pipeline comprises a pipeline, a pipe fitting and a valve. The common technical part is that according to the current standard of China' Van filter press and plate-and-frame filter press part 1: type and basic parameters; section 2: the technical conditions; section 4: diaphragm filter plates manufactured by JB/T4333.1, 2 and 4-2013.
Assembly of the pressed gas reuse apparatus (present invention): the lower end of the main feeding pipeline 1 is connected with a pressure pump, and the upper end of the main feeding pipeline is connected with a feeding hole of a thrust plate 10; the lower end of the auxiliary feeding pipeline 2 is connected with the main feeding pipeline 1, and the upper end of the auxiliary feeding pipeline is connected with a feeding hole of the pressing plate 11; the lower end of the squeezing air inlet pipeline 3 is connected with an air compressor, and the upper end of the squeezing air inlet pipeline is connected with an air inlet of a thrust plate 10; the upper end of the squeezing exhaust pipeline 4 is connected with a pressure relief valve at the upper end of the squeezing air inlet pipeline 3, and the lower end of the squeezing exhaust pipeline is connected with a back flushing return pipeline 6; the back-blowing return pipeline 6 is communicated with the main feeding pipeline 1; the left end of a back-blowing (blow-drying) air inlet pipeline 7 is connected with the lower end of the squeezing air inlet pipeline 3, and the right end is connected with the lower end of the auxiliary feeding pipeline 2; the device integrates the functions of squeezing and dewatering and back flushing materials.
The single complete operation cycle working process of the filter press comprises the following steps: compacting by a filter plate, feeding, filtering, washing, purifying, squeezing, dehydrating and back blowing materials, blow-drying, purifying, pulling a plate, discharging cakes and cleaning filter cloth; through a PLC control system, single operation cycle is automatically completed by one key; the intermittent reciprocating circulation work realizes the solid-liquid separation of the suspension liquid in batches; described in more detail below:
1. the filter plates are pressed tightly, handles at two sides of each filter plate are supported on guide rails of the cross beams, the filter plates 9 are pressed tightly through hydraulic oil cylinders 8, and concave parts of the adjacent filter plates 9 clamping the filter cloth form a series connection filter chamber.
2. Feeding and filtering, wherein a solid-liquid mixed material is simultaneously conveyed to each filter chamber from a main feeding pipeline 1 and an auxiliary feeding pipeline 2 by a conveying pump, so that pressure difference is formed between two sides of filter cloth, low-pressure static filtration is carried out, particles in the material are intercepted by the filter cloth to form filter cakes in the filter chambers, and filtrate passes through the filter cloth and flows out from a liquid outlet hole.
3. And (3) washing and purifying, wherein when washing is needed, a feed valve on the main feed pipeline 1 is automatically closed, and a water pump injects washing liquid into the filter cake from the washing hole to remove soluble impurities in the filter cake or recover valuable mother liquor retained in the filter cake.
4. Squeezing dehydration and back flushing materials, (1) squeezing dehydration: high-pressure gas is input into the filter chamber through a compressed air inlet 5, and the filter cake is secondarily squeezed by the inflatable diaphragm to be dehydrated, so that the water content of the filter cake is reduced to the lowest point, and the purity of the filter cake and the recovery rate of filtrate are improved; (2) back flushing the materials: after the filter cake is squeezed and dehydrated, a feed valve on the main feed pipeline 1 and a pressure relief valve on the squeezing air inlet pipeline 3 are automatically opened, squeezed gas enters a back-blowing return pipeline 6 through a squeezing exhaust pipeline (squeezing gas recycling pipeline) 4, and residual materials retained in the feed pipeline 1 are back-blown by the squeezed gas and blown back to a slurry pond, so that the influence of slurry on the purity of the filter cake and the recovery rate of filtrate is avoided, and the next feeding is facilitated; meanwhile, after being squeezed, the gas passes through a large feeding pipeline 1 to eliminate pressure relief noise.
5. Blow-dry purification, when needing to blow-dry, high-pressure gas is input through a blowback (blow-dry) air inlet pipeline 7, and the air flows through and blows dry the residual washing liquid in the filter cake grain gaps, so as to reduce the water content of the filter cake and improve the purity of the filter cake and the recovery rate of the mother liquor.
6. The plate pulling and cake discharging are carried out, the hydraulic oil cylinder 8 automatically reverses and loosens the pressing plate 11, and the filter plate 9 is pulled open through the plate pulling trolley, so that the gravity cake discharging is realized; when the cake needs to be quickly unloaded, the vibrating device of the filter plate 9 is automatically started according to the program, so that the filter cake quickly falls.
7. And (3) cleaning the filter cloth, when the cloth needs to be cleaned, the filter plate 9 is continuously pulled to a cleaning position by the unloading rear pull plate trolley, the cloth cleaning trolley cleans the filter cloth by high-pressure water through the lifting pipeline and the water cleaning transverse pipe, and the filter cloth is regenerated by water cleaning.
Through repeated experiments, the energy-saving type membrane filter press has the advantages of high efficiency and rapidness in squeezing and filtering, energy conservation, noise reduction and efficiency improvement; compressed air for back flushing materials is saved, squeezing dehydration pressure relief noise pollution is effectively eliminated, production efficiency of the filter press is further improved, and the blank of a series process of squeezing dehydration and back flushing materials of the filter press in China is filled.
Claims (2)
1. A press gas recycling device of a press filter comprises a main feeding pipeline, an auxiliary feeding pipeline, a press air inlet pipeline, a press air outlet pipeline, namely a press gas recycling pipeline, a back-blowing return pipeline, a compressed air inlet, a back-blowing and blow-drying air inlet pipeline, wherein each pipeline comprises a pipeline, a pipe fitting and a valve; the device is characterized in that the upper end of a main feeding pipeline is connected with a thrust plate feeding hole, the lower end of an auxiliary feeding pipeline is connected with the main feeding pipeline, the upper end of the auxiliary feeding pipeline is connected with a compacting plate feeding hole, the upper end of a squeezing air inlet pipeline is connected with a thrust plate air inlet, the upper end of a squeezing exhaust pipeline is connected with a pressure relief valve at the upper end of the squeezing air inlet pipeline, the lower end of the squeezing air inlet pipeline is connected with a back flushing return pipeline, the back flushing return pipeline is communicated with the main feeding pipeline, the left end of the back flushing and blow-drying air inlet pipeline is connected with the lower end of the squeezing air inlet pipeline, and the right end of the back flushing and blow-drying air inlet pipeline is connected with the lower end of the auxiliary feeding pipeline; the squeezing exhaust pipeline for squeezing dehydration is connected with a back-blowing return pipeline for back-blowing materials in series, squeezing gas after squeezing dehydration is recycled for back-blowing materials, and the functions of squeezing dehydration and back-blowing materials are integrated.
2. An energy-saving diaphragm filter press comprises a frame, a pressing mechanism, a filtering mechanism, a pressed gas recycling device of the filtering mechanism, a plate pulling mechanism, a cloth washing mechanism, a hydraulic driving mechanism and a PLC program control system; the press gas reusing device according to claim 1, wherein the press gas reusing device is provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010409846.6A CN113663372A (en) | 2020-05-15 | 2020-05-15 | Press gas recycling device of press filter and energy-saving diaphragm press filter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010409846.6A CN113663372A (en) | 2020-05-15 | 2020-05-15 | Press gas recycling device of press filter and energy-saving diaphragm press filter |
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| CN113663372A true CN113663372A (en) | 2021-11-19 |
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| CN202010409846.6A Pending CN113663372A (en) | 2020-05-15 | 2020-05-15 | Press gas recycling device of press filter and energy-saving diaphragm press filter |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203436885U (en) * | 2013-09-16 | 2014-02-19 | 杨德平 | Pressing and back flushing press filter |
| CN212440204U (en) * | 2020-05-15 | 2021-02-02 | 景津环保股份有限公司 | Press gas recycling device of press filter and energy-saving diaphragm press filter |
-
2020
- 2020-05-15 CN CN202010409846.6A patent/CN113663372A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203436885U (en) * | 2013-09-16 | 2014-02-19 | 杨德平 | Pressing and back flushing press filter |
| CN212440204U (en) * | 2020-05-15 | 2021-02-02 | 景津环保股份有限公司 | Press gas recycling device of press filter and energy-saving diaphragm press filter |
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