CN107670353B - Multi-chamber sludge high-dryness dewatering device - Google Patents
Multi-chamber sludge high-dryness dewatering device Download PDFInfo
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- CN107670353B CN107670353B CN201711073443.3A CN201711073443A CN107670353B CN 107670353 B CN107670353 B CN 107670353B CN 201711073443 A CN201711073443 A CN 201711073443A CN 107670353 B CN107670353 B CN 107670353B
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- sludge
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- 239000010802 sludge Substances 0.000 title claims abstract description 92
- 230000007246 mechanism Effects 0.000 claims abstract description 43
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 33
- 238000003825 pressing Methods 0.000 claims abstract description 29
- 230000018044 dehydration Effects 0.000 claims abstract description 16
- 238000006297 dehydration reaction Methods 0.000 claims abstract description 16
- 239000004744 fabric Substances 0.000 claims description 28
- 238000007789 sealing Methods 0.000 claims description 13
- 238000006073 displacement reaction Methods 0.000 claims description 10
- 230000003014 reinforcing effect Effects 0.000 claims description 7
- 238000007790 scraping Methods 0.000 claims description 4
- 238000000605 extraction Methods 0.000 claims 1
- 230000037431 insertion Effects 0.000 claims 1
- 238000003780 insertion Methods 0.000 claims 1
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 30
- 208000005156 Dehydration Diseases 0.000 description 13
- 230000000694 effects Effects 0.000 description 12
- 230000009471 action Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 5
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000007769 metal material Substances 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 239000010865 sewage Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 229910021578 Iron(III) chloride Inorganic materials 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010801 sewage sludge Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/122—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
-
- 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
- B01D25/21—Plate and frame presses
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Treatment Of Sludge (AREA)
- Filtration Of Liquid (AREA)
Abstract
The invention relates to a multi-chamber sludge high-dryness dewatering device, which comprises a power mechanism (1), a filter plate mechanism and a rack (14), wherein the power mechanism (1) and the filter plate mechanism are arranged on the rack (14), the filter plate mechanism comprises a head plate (6), a tail plate (9) and a plurality of middle filter plates (8), and a plurality of filter pressing chambers are formed between the head plate (6) and the middle filter plates (8) adjacent to the head plate, between the middle filter plates (8) adjacent to the head plate, and between the tail plate (9) and the middle filter plates (8) adjacent to the tail plate; sludge enters the plurality of filter pressing chambers and acts on the filter plate mechanism through the power mechanism (1) to realize filter pressing dehydration. The invention has the advantages of few vulnerable parts, low energy consumption and lower water content of dehydrated sludge.
Description
Technical Field
The invention relates to the field of sewage sludge treatment, in particular to a multi-chamber sludge high-dryness dewatering device.
Background
The high water content of the sludge is a bottleneck for restricting sludge treatment, the sludge with high water content is huge in volume, and a large amount of organic matters, heavy metals and harmful microorganisms contained in the sludge are easy to be decomposed or released into the environment, so that secondary pollution is caused, and adverse effects are caused on subsequent landfill, incineration, recycling and the like of the sludge. Therefore, the deep dehydration and reduction of sludge is the primary aim of sludge treatment, the reduction is the basis for realizing other 'three' types of sludge, and the drier the sludge is, the more beneficial the subsequent treatment is.
The conventional dewatering equipment for early sludge comprises a plate-and-frame filter press, a rotary drum centrifuge and a belt filter press, the water content of the sludge is generally 75% -80% after the sludge is dewatered by the equipment, the sludge is inconvenient to transport and high in cost due to the excessively high water content, and the sludge cannot be directly treated in a landfill site to cause long drying time, contains a large amount of organic matters, rich nutrients such as nitrogen, phosphorus and potassium, and is easy to rot to produce malodor and cause environmental pollution.
At present, a diaphragm plate-and-frame filter press is adopted in the market by using more sludge deep dehydration equipment, but in dehydration, the efficiency is lower, the squeezing pressure is only 1.6MPa, sewage is injected into the diaphragm plate frame by a high-pressure water pump, the diaphragm is inflated to reduce the area of a filter chamber, and the diaphragm plate frame is pressed by virtue of plastic deformation of the plate frame; the diaphragm plate frame has small compression ratio and long relative working period. In addition, the common elastic pressing plate frame on the market is in the structure, the filter plates are all integral injection molding modules, the filter plates are easy to damage and deform, the damaged filter plates need to be replaced integrally, so that the maintenance cost is higher, more importantly, due to the structural characteristics and the low pressing pressure, the diaphragm plate frame filter press is adopted at present to possibly press and dehydrate municipal sludge to about 60%, the water content of the diaphragm plate frame filter press is reduced greatly compared with that of the prior plate frame filter press, the diaphragm bulge produces secondary pressing on the sludge, namely, the sludge press chamber is a variable chamber, but lime and ferric salt with the absolute sludge amount of about 30% are required to be added to the device, so that the sludge amount is greatly increased, the added lime, ferric chloride and the like can bring adverse effects to the subsequent treatment and disposal of the sludge, and the reduction and harmless principle of the sludge treatment and disposal are violated.
The ultra-high pressure elastic squeezing sludge dewatering machine mainly comprises a high-pressure oil cylinder, an ultra-high pressure filter plate, a distributing plate, a spring medium, special filter cloth, a tail plate, a push plate, a main beam and the like. The dewatering process of the squeeze plate is mainly divided into two stages, wherein the first stage is to convey materials to a filter chamber by a feed pump, and the solid-liquid separation is carried out by the pressure of the feed pump while feeding, namely, one-time filtration and dewatering; the second stage is elastic squeezing, one end of the device is fixed, the other end applies external pressure through a hydraulic cylinder, and the material is squeezed through an elastic force transfer device (spring) to carry out secondary dehydration. By carrying out ultrahigh pressure squeezing on the sludge, the squeezing pressure is about 5MPa, and a high-pressure oil pump is required to provide about 25-30MPa, so that the water content of the sludge can be reduced to about 50%. In addition, the ultra-high pressure elastic squeezer realizes ultra-high pressure squeezing by arranging the springs to change the volume of the sludge squeezing chamber, and because the springs are often subjected to processes of extension, compression and the like, the springs are required to bear alternating loads and are easy to be damaged by fatigue, the springs are easy to be damaged by fatigue, 10-20 high-strength springs are required between each group of plate frames, approximately 1000-2000 high-strength springs are required for 50-100 plate frames, the initial elastic action of the springs is overcome when the springs are squeezed, and the actual squeezing pressure of sludge is smaller than the pressure provided by an ultra-high pressure oil pump when the springs are squeezed for the second time. For example, at a feed pressure of 1MPa, the spring must provide an elastic force of greater than 1MPa so that the chamber between the filter plate and the filter frame is kept to a maximum, and when the high-pressure pump presses the sludge for the second time at the end of the feed pressing, the spring must be overcome, and this partial pressure is the consumed pressure, so that the pressure generated by the high-pressure pump on the sludge is smaller than the actual pressure.
There is also an ultrahigh pressure diaphragm plate-and-frame filter press in the market at present, the device is an upgrade on the original diaphragm plate-and-frame filter press, the pressure of nearly 10MPa is provided for the sludge by injecting 10MPa water into the diaphragm, the two-stage squeezing process is also adopted, namely, the feeding pressure is started, then high-pressure liquid is injected into the diaphragm, the diaphragm is inflated to further squeeze and dewater the sludge, and the water content of municipal sludge can be reduced to about 50% after the sludge is dewatered by the device. One major problem with this device is that the diaphragm, under such high pressures and large deformations, affects the service life of the diaphragm.
From the above analysis, it can be seen that the variability of the volume of the sludge press chamber must be achieved in order to achieve deep dewatering of the sludge, while the sludge is pressed under high pressure. Both diaphragm plate-and-frame presses and ultra-high pressure elastic presses have variability in the sludge press chamber, but the current deep sludge dewatering equipment has several major problems: (1) The common diaphragm plate-and-frame filter press has smaller sludge squeezing pressure and enough ultrahigh pressure diaphragm plate-and-frame filter press squeezing pressure, but the service life of the diaphragm is not high; (2) The ultrahigh pressure elastic squeezer realizes the change of the volume of the sludge squeezing chamber by means of springs, and the springs are easy to damage and consume a large amount of squeezing pressure; (3) The larger the pressure is, the stronger the sludge clinging to the filter plate is, so that a compact sludge layer is easy to form, the sludge layer is bonded on the filter cloth, the water discharge resistance is increased, and the dewatering effect is affected; (4) Because of the high compressibility and high water content of sewage and sludge and the characteristic of difficult sludge dehydration caused by capillary water, adsorbed water and internal water contained in the sewage and sludge, the sludge is difficult to be dehydrated deeply by completely adopting mechanical pressure, so that the water content of the sludge reaches a lower level; (5) All the pressure is directly from the pressure of the high-pressure oil cylinder, and the pressure and the volume of the oil cylinder are overlarge because of no force amplifying mechanism, so that higher requirements are put on the sealing and reliability of equipment.
Disclosure of Invention
In view of the above, the invention provides a multi-chamber sludge high-dryness dewatering device with few vulnerable parts, low energy consumption and lower water content of dewatered sludge, which aims at the technical problems of more vulnerable parts, high energy consumption, high requirement on cylinder pressure and higher water content of dewatered sludge in the prior art.
The technical scheme of the invention is that the multi-chamber sludge high-dryness dewatering device comprises a power mechanism, a filter plate mechanism and a frame, wherein the power mechanism and the filter plate mechanism are arranged on the frame, the filter plate mechanism comprises a head plate, a tail plate and a plurality of middle filter plates, and a plurality of filter pressing chambers are formed between the head plate and the middle filter plates adjacent to the head plate, between the middle filter plates adjacent to the head plate and the tail plate and between the tail plate and the middle filter plates adjacent to the head plate; and the sludge enters the plurality of filter pressing chambers and acts on the filter plate mechanism through the power mechanism to realize filter pressing dehydration.
Optionally, the middle filter plate is a concave-convex die filter plate, and the convex plate of the middle filter plate is embedded into the groove of the adjacent filter plate to form a filter pressing cavity.
Optionally, the dehydration device further comprises a high-pressure gas assembly including a high-pressure gas pump, a gas main pipe and a plurality of gas branch pipes, wherein the gas branch pipes are communicated with the gas main pipe, and the gas branch pipes are connected with corresponding gas inlets on all the middle filter plates, the head plates and the tail plates.
Optionally, the filter plate is divided into a plurality of filter plate group in the middle of the polylith, sets up one set of filter plate self-adjusting balance module between two adjacent filter plate groups, filter plate self-adjusting balance module includes protruding bulb board, concave bulb board and hose, protruding bulb board cross section's edge be the hemisphere, concave bulb board's inner wall edge be the sphere, protruding bulb board and concave bulb board cooperation, trompil in the middle of protruding bulb board and the concave bulb board, the hose mounting in the downthehole, protruding bulb board fix on the filter plate, concave bulb board is installed on another adjacent filter plate in the middle of the piece.
Optionally, the filter plate displacement control mechanism include support, guide arm, screens valve plate and spacing valve body, support fixed mounting is on corresponding middle filter plate, spacing valve body is installed on corresponding support, the screens valve plate sets up on the guide arm, be provided with spacing post between two adjacent spacing valve bodies, during spacing the screens valve plate inserts spacing valve body is in order to lock spacing post.
Optionally, the guide rod is arranged in parallel with the filter plate mechanism, and the guide rod drives the cylinder to drive the cylinder to move, so that the clamping valve plate is inserted into and pulled out of the limiting valve body.
Optionally, the spacing post includes interior bolt and outer bolt, and two through-holes that the size is different are seted up to spacing valve body, and wherein the hole that the diameter is little is the bolt hole, and this bolt hole and the screw thread engagement of interior bolt or outer bolt, another hole diameter surpass bolt head size, two through-holes on the adjacent spacing valve body are opposite in position, the screens valve plate insert in the spacing valve body, the screens valve plate correspond to open according to spacing valve body and set up the draw-in hole, draw-in hole size requirement be greater than the nominal diameter of bolt and be less than bolt head size, interior bolt and outer bolt install respectively in the bolt hole of spacing valve body.
Optionally, the middle filter plate includes the filter plate body, welt, strengthens lining cloth and filter cloth, welt and strengthen the lining cloth and fix on the filter plate body both sides, the filter cloth sets up on strengthening the lining cloth outside, the welt on seted up a plurality of through-holes and many water channels.
Optionally, the filter plate body be unsmooth mould shape, one end structure is the terrace die structure, and the other end is the die structure terrace die structure on install sealing member and scrape the mud ring, the terrace die structure and the die structure cooperation of adjacent filter plate body, terrace die structure, die structure and sealing member have formed a size adjustable filter-pressing cavity the filter plate body upper portion seted up inlet port and ventilation groove, the lower part has been seted up water channel and apopore.
Optionally, the middle filter plate slides on the linear guide rail through the support, the linear guide rail is installed in the frame, the tip of linear guide rail still install the stopper.
With the structure, the invention has the following advantages: (1) The closed cavity with arbitrarily variable volume can be formed by matching the adjacent concave-convex die filter plates and sealing pieces and the filter plate displacement control mechanism, so that the closed cavity is suitable for sludge with different compression characteristics, vulnerable parts such as springs, diaphragms and the like are not used, the reliability of equipment is improved, and the service life of the equipment is prolonged; (2) The method adopts a high-pressure gas generator and a component, and takes away the moisture which is difficult to be removed in the sludge in a mechanical way through a high-pressure gas way under the action of the high-pressure gas, namely, the mechanical squeezing and the gas flow double-effect are realized, so that the moisture of the sludge is further reduced, and the purpose of reducing the sludge depth is achieved; (3) The self-balancing filter plate module is adopted, the self-balancing adjusting module is arranged behind a certain number of filter plates, when the filter plates are stressed unevenly, the filter plates are inclined by a certain angle, and the convex ball head plates of the filter plates connected with the front ends can be automatically adjusted to be in a vertical state, namely, the self-balancing adjusting module is used for adjusting the self-balancing filter plates in a self-balancing manner, so that the filter plates of the whole device can be ensured to be in a state with enough pressure.
Drawings
FIG. 1 is a schematic structural view of a multi-chamber sludge high dryness dewatering device of the present invention;
FIG. 2 is an isometric view of a multi-chamber sludge high dryness dewatering device of the present invention;
FIG. 3 is a schematic diagram of the structure of an intermediate filter plate of the multi-chamber sludge high dryness dewatering device of the invention;
fig. 4 is an isometric view of an intermediate filter plate of the multi-chamber sludge high dryness dewatering device of the present invention.
As shown in the figure, 1, a power mechanism, 2, a front plate, 3, a connecting nut, 4, a push plate, 5-1, an air pump, 5-2, a gas main pipe, 5-3, a gas branch pipe, 6, a head plate, 7-1, a convex ball head plate, 7-2, a concave ball head plate, 7-3, a hose, 8, an intermediate filter plate, 8-1, a filter cloth, 8-2, a reinforcing lining cloth, 8-3, a lining plate, 8-4, a ventilation groove, 8-5, an air inlet hole, 8-6, a filter plate body, 8-7, a water channel, 8-8, an outlet hole, 9, a tail plate, 10, a rear plate, 11-1, a bracket, 11-2, a guide rod, 11-3, a clamping valve plate, 11-4, an inner bolt, 11-5, an outer bolt, 11-6, a limiting valve body, 11-7, a guide rod driving cylinder, 14 and a frame.
Detailed Description
The invention will be further described with reference to the drawings and the specific examples.
The invention is intended to cover any alternatives, modifications, equivalents, and variations that fall within the spirit and scope of the invention. In the following description of preferred embodiments of the invention, specific details are set forth in order to provide a thorough understanding of the invention, and the invention will be fully understood to those skilled in the art without such details. Furthermore, the drawings of the present invention are not necessarily to scale, nor are they necessarily drawn to scale.
As shown in FIG. 1, the multi-chamber sludge high-dryness dewatering device disclosed by the invention comprises a power mechanism 1, a front plate 2, a connecting nut 3, a push plate 4, a rear plate 10, a frame 14, an intermediate filter plate 8, a head plate 6 and a tail plate 9, wherein the power mechanism 1, the front plate 2, the push plate 4, the rear plate 10, the intermediate filter plate 8, the head plate 6 and the tail plate 9 are arranged on the frame 14, and the power mechanism 1 can be a hydraulic system, such as an oil cylinder, or a composite mechanism formed by combining the hydraulic system and a force amplifying mechanism, so long as sufficient pressure of sludge can be provided. The connecting nut 3 is connected with a hydraulic rod of the power mechanism 1 through threads, the front plate 2 and the rear plate 10 are fixed on a frame, and are made of metal materials and formed by welding steel plates.
The multi-chamber sludge high-dryness dewatering device further comprises a filter plate displacement control mechanism, a high-pressure gas assembly and a filter plate self-regulating balancing module, wherein the middle filter plate 8 is a concave-convex die filter plate and is made of metal materials, a convex plate of the middle filter plate 8 is embedded into a groove of an adjacent middle filter plate 8 to form a filter pressing chamber, the thickness of the formed chamber is generally 20-40mm, a set of filter plate self-regulating balancing module is arranged on a filter plate group formed by 6-8 filter plates according to the processing and assembling precision of equipment parts and the number of the filter plates of the equipment, for example, the number of the total filter plates of the equipment is 20-30, 2-3 sets of self-regulating balancing modules are generally arranged, the filter plate displacement control mechanism is arranged on the middle filter plate 8 to control the movement of the filter plate, the closing and opening actions are performed, the high-pressure gas assembly is connected with the middle filter plate 8, the high-pressure gas is introduced into a cavity, and the double dewatering effects of mechanical squeezing and high-pressure gas flow carrying drying are formed.
The middle filter plate 8 comprises a filter plate body 8-6, a lining plate 8-3, a reinforcing lining cloth 8-2 and filter cloth 8-1, wherein the lining plate 8-3 and the reinforcing lining cloth 8-2 are fixed on two sides of the filter plate body 8-6 through a plurality of screws, the filter plate body 8-6 is made of metal materials, the lining plate 8-3 is made of nylon plates, the reinforcing lining cloth 8-2 is made of materials with high strength and good water permeability, the filter cloth 8-1 is a common filter cloth widely used at present, a pressing ring groove and bolt holes are formed in the end face of the filter plate body 8-6, the size of the pressing ring groove is equal to the thickness of the pressing ring and the filter cloth, the filter cloth is fixed on two sides of the filter plate body 8-6 through the pressing ring and the screws, a plurality of through holes are formed in the lining plate 8-3, and the small holes are high-pressure gas and filter liquid channels, and a plurality of crossed water tanks are formed in the lining plate 8-3. Through setting up the welt and making moisture flow out more easily and the easy distribution of high-pressure gas to whole mud cavity in, improve the dehydration effect, set up the enhancement lining cloth, protect filter cloth, improve filter cloth life. The filter plate body 8-6 is in a concave-convex die circular shape, one end structure is a male die structure, the other end is a female die structure, a sealing element and a mud scraping ring are arranged on the male die structure, the sealing element can be an O-shaped ring or a lip-shaped ring, the mud scraping ring can be made of carbon fiber, the filter plate body has better wear resistance, the male die structure is matched with the female die structure, the male die, the female die and the sealing element form a sludge squeezing cavity with adjustable size, the upper end of the filter plate body 8-6 is provided with an air inlet hole 8-5, the lower end of the air channel 8-4 is provided with an air channel 8-7 and an outlet hole 8-8, the cylindrical surface of the filter plate body 8-6 is provided with a section of milled into a plane, the plane is distributed on two sides of the filter plate body, the filter plate body 8-6 is also provided with a guide post and a guide hole, and the guide post and the guide hole are mutually matched for use. Because the concave-convex die has relative motion, in order to better realize sealing effect, the mud is scraped clean by adopting a mud scraping ring, then double-layer sealing is adopted, sealing effect is ensured, a guide post and a guide hole are arranged, and the adjacent filter plates can smoothly enter and match with the concave-convex die.
The self-adjusting balancing module of the filter plate comprises a convex ball head plate 7-1, a concave ball head plate 7-2 and a hose 7-3, the edge of the cross section of the convex ball head plate 7-1 is hemispherical, the edge of the inner wall of the concave ball head plate 7-2 is spherical, the convex ball head plate 7-1 is matched with the concave ball head plate 7-2, the diameters of the two balls are equal, the middle of the convex ball head plate 7-1 and the concave ball head plate 7-2 are provided with holes, the hose 7-3 is arranged in the holes, the convex ball head plate 7-1 is fixed on the filter plate 8, and the concave ball head plate 7-2 is arranged on the other adjacent filter plate 8. Because the concave-convex mould matching mode that this scheme adopted, and the important influence factor to mud squeeze effect is to the positive pressure of mud, if there is great tolerance in the size processing (especially the straightness error of perpendicularity of cylinder face and terminal surface) of concave-convex mould, perhaps mud accords with machining precision but the accumulative error that filter cloth quantity is big and forms, can lead to the power that power unit provided can not form sufficient positive pressure in the horizontal direction of filter plate, and forms a great component in the vertical direction, and the filter plate can produce the slope of certain angle, can produce "choking" phenomenon when serious. The self-balancing filter plate module is adopted, the self-balancing adjusting module is arranged behind a certain number of filter plates, when the filter plates are stressed unevenly, the filter plates are inclined by a certain angle, the convex ball head plates 7-1 of the filter plates connected with the front ends can be automatically adjusted to be in a vertical state, namely, the self-balancing can be automatically found, the filter plates of the whole device can be ensured to be in a state with enough pressure, and software arranged in the middle can be self-adaptive to the deformation of a bit.
The filter plate displacement control mechanism comprises a bracket 11-1, a guide rod 11-2, a clamping valve plate 11-3, a limiting valve body 11-6, an inner bolt 11-4, an outer bolt 11-5 and a guide rod driving cylinder 11-7, wherein the bracket 11-1 is fixedly arranged on a middle filter plate 8, the limiting valve body 11-6 is arranged on the bracket 11-1, two through holes with different sizes are formed in the limiting valve body 11-6, the holes with small diameters are bolt holes, the bolt holes are meshed with the bolts, the other hole diameter exceeds the head size of the bolt, the two through holes on the adjacent limiting valve body 11-6 are opposite in direction, the clamping valve plate 11-3 is inserted into the limiting valve body 11-6, the clamping valve plate 11-3 is provided with clamping holes according to the corresponding limiting valve body 11-6, the clamping hole size is slightly larger than the nominal diameter of the bolt, the bolt can move in the clamping holes and cannot slide out completely, the inner bolt 11-4 and the outer bolt 11-5 are respectively arranged in the bolt holes of the limiting valve body 11-6, the guide rod 11-3 can move along the axial direction of the guide rod 11-3 along the guide rod 11-11 and the guide rod 2. When the feeding is finished, the two filter plates 8 are pressed for the second time, the thickness of the sludge is reduced and the volume is reduced, the two filter plates are mutually close, when the pressing dehydration is finished, the thickness of the sludge is minimum, the two filter plates must be pulled apart at the moment, and the mud cake can fall down. The filter pressing chamber of the filter plate can be maximized, reduced and pulled through the bracket 11-1, the guide rod 11-2, the clamping valve plate 11-3, the limiting valve body 11-6, the inner bolt 11-4, the outer bolt 11-5 and the guide rod driving cylinder 11-7, and meanwhile, the sealing state in the squeezing process is ensured. The arrangement of the inner and outer bolts 11-4 and 11-5 and the hole site is merely one specific example of a limit post, but is not limited to this example.
The size of the filter pressing cavity can be adjusted according to the screwing depth of the threaded holes of the inner bolt 11-4, the outer bolt 11-5 and the clamping valve plate 11-3, so that the thickness of the mud cake and the water content of the final mud cake are adjusted. Taking municipal sludge as an example, the thickness of a mud cake can obtain a good dehydration effect at 5mm, when the lower water content of the sludge is needed, the maximum distance between two middle filter plates 8 is shortened by screwing the inner bolt 11-4 and the outer bolt 11-5 in a threaded hole deeper, and the final mud cake is thinned under the same compression rate. If the water content is not high, but the treatment efficiency (sludge treatment capacity per unit time) is high, the screwing depth can be reduced, the filter plate distance is increased, the thickness of the mud cake is thickened, and the water content is increased.
The high-pressure gas assembly comprises a high-pressure gas pump 5-1, a gas main pipe 5-2 and a gas branch pipe 5-3, wherein the gas branch pipe 5-3 is connected with all the middle filter plates 8 and the gas inlet holes 8-5 on the head plate 6 and the tail plate 9, and the gas pressure is generally 0.5-0.8MPa. Because the moisture content of mechanical squeezing dehydration has a minimum limit value, the moisture content of sludge is further reduced, high dryness is realized, and then the mechanical plus air flow carrying effect can be adopted, through the structure, high-pressure air can enter a filter pressing cavity, the moisture of the sludge is carried out through the effect of the air, and the principle that a hair blower blows hair is similar to the principle that the hair blower blows hair, the high-speed air removes the moisture which cannot be removed by a mechanical way, meanwhile, the current mud cake can be blown off, unlike the current mud cake which needs to be manually stuck on a filter plate, the labor intensity can be saved, and the sludge particles blocked on the meshes of the filter cloth are blown off through the effect of the high-speed air, so that the resistance of water outflow is reduced.
The middle filter plate 8 slides on a linear guide rail 12 through a bracket 11-1, the linear guide rail 12 is arranged on a frame 14, and one end of the linear guide rail is also provided with a limiting block 13. By installing the linear guide rail, the concave-convex parts of each filter plate can be mutually embedded. The bracket 11-1 is an L-shaped bracket.
Preferred press parameters are: the sludge pressing pressure is 8-10MPa, the thickness of the sludge cake is 5-10mm, and the pressing time is 0.5-1.0 hour.
The working principle of the device is as follows: before mud is fed in, the oil cylinder is used as a power mechanism to push all filter plates to the back plate direction, at the moment, the limiting clamping plates are pulled outwards under the action of the guide rod driving air cylinder and the guide rod, the inner bolts and the outer bolts are inserted into the limiting valve body, when all filter plates are pushed to the leftmost end, the limiting clamping plates are inserted into the limiting valve body, all filter plates are embedded and connected like a chain, at the moment, the filter plates can only move in a small range, under the action of feeding pressure, the filter plates close to the tail plate are moved away from the tail plate direction by the pressure of mud, when the volume of the chamber is maximum, the filter plates are limited by the filter plate displacement control mechanism, at the moment, the filter plates can not move any more, the mud then enters the next chamber, the next filter plates are also pushed to the direction away from the tail plate to the maximum position by the filter plate displacement control mechanism, and so on, when the last filter plate and the head plate move to the maximum position of the chamber, the sum of the volumes of all the chambers of the whole device reaches the maximum value, and the feeding is stopped until the feeding is finished. In order to further reduce the water content, the sludge is pressed under higher pressure again, the power mechanism starts to work, the push plate pushes the head plate to move towards the tail plate under the action of the power mechanism, the sludge is subjected to the pressure action, water is extruded, the water is discharged through the water outlet at the lower end of the filter plate, the volume of the sludge is gradually reduced, the distance between adjacent filter plates is gradually shortened, high-pressure gas also works to carry out the water in the dehydration process, the dual effects of mechanical pressing and carrying with high-pressure gas flow are formed, the dehydration is finished, the guide rod drives the air cylinder to push the guide rod and the limiting clamping plate to move outwards, the restriction of bolts is relieved, the filter plates are pulled one by the plate pulling device, meanwhile, the high-pressure gas continues to blow, mud cakes adhered to the filter plates are blown down, and meanwhile, sludge particles blocked on filter cloth meshes are blown clean, so that preparation is made for the next period. When all the filter plates are pulled apart, the sludge falls down, and the whole working cycle is finished.
Although the embodiments have been described and illustrated separately above, and with respect to a partially common technique, it will be apparent to those skilled in the art that alternate and integration may be made between embodiments, with reference to one embodiment not explicitly described, and reference may be made to another embodiment described.
The foregoing is illustrative of the preferred embodiments of the present invention, and is not to be construed as limiting the claims. The present invention is not limited to the above embodiments, and the specific structure thereof is allowed to vary. In general, all changes that come within the meaning and range of equivalency of the claims are to be embraced within their scope.
Claims (6)
1. The utility model provides a multi-chamber mud high dryness dewatering device, includes power unit (1), filter plate mechanism and frame (14), its characterized in that: the filter plate displacement control mechanism is characterized by further comprising a filter plate displacement control mechanism, wherein the power mechanism (1) and the filter plate mechanism are arranged on the frame (14), the filter plate mechanism comprises a head plate (6), a tail plate (9) and a plurality of middle filter plates (8), and a plurality of filter pressing chambers are formed between the head plate (6) and the middle filter plates (8) adjacent to the head plate, between the middle filter plates (8) adjacent to the head plate, and between the tail plate (9) and the middle filter plates (8) adjacent to the tail plate; sludge enters the plurality of filter pressing chambers and acts on the filter plate mechanism through the power mechanism (1) to realize filter pressing dehydration;
the middle filter plate (8) is a concave-convex die filter plate, and the convex plates of the middle filter plate (8) are embedded into the grooves of the adjacent middle filter plates (8) to form a filter pressing cavity;
the filter plate displacement control mechanism comprises a bracket (11-1), a guide rod (11-2), a clamping valve plate (11-3) and a limiting valve body (11-6), wherein the bracket (11-1) is fixedly arranged on a corresponding middle filter plate (8), the limiting valve body (11-6) is arranged on the corresponding bracket (11-1), the clamping valve plate (11-3) is arranged on the guide rod (11-2), a limiting column is arranged between two adjacent limiting valve bodies (11-6), and the clamping valve plate (11-3) is inserted into the limiting valve body (11-6) to lock the limiting column during limiting;
the guide rod (11-2) is arranged in parallel with the filter plate mechanism, and is driven by the guide rod driving cylinder (11-7) to move so as to realize the insertion and extraction of the clamping valve plate (11-3) into and out of the limit valve body (11-6);
the limiting column comprises an inner bolt (11-4) and an outer bolt (11-5), two through holes with different sizes are formed in the limiting valve body (11-6), the small-diameter holes are bolt holes, the bolt holes are meshed with threads of the inner bolt or the outer bolt, the diameter of the other hole exceeds the size of the head of the bolt, the two through holes on the adjacent limiting valve body (11-6) are opposite in position, the clamping valve plate (11-3) is inserted into the limiting valve body (11-6), the clamping valve plate (11-3) is correspondingly provided with clamping holes according to the limiting valve body (11-6), the size of each clamping hole is required to be larger than the nominal diameter of the bolt and smaller than the size of the head of the bolt, and the inner bolt (11-4) and the outer bolt (11-5) are respectively installed in the bolt holes of the limiting valve body (11-6).
2. The multi-chamber sludge high dryness dewatering device according to claim 1, wherein: the dehydration device further comprises a high-pressure gas assembly, the high-pressure gas assembly comprises a high-pressure gas pump (5-1), a gas main pipe (5-2) and a plurality of gas branch pipes (5-3), the gas branch pipes (5-3) are communicated with the gas main pipe (5-2), and the gas branch pipes (5-3) are connected with corresponding gas inlet holes (8-5) on all middle filter plates (8), head plates (6) and tail plates (9).
3. The multi-chamber sludge high dryness dewatering device according to claim 1 or 2, wherein: the filter plate comprises a plurality of middle filter plates (8), wherein a set of filter plate self-adjusting balance modules are arranged between two adjacent filter plate groups, each filter plate self-adjusting balance module comprises a convex ball head plate (7-1), a concave ball head plate (7-2) and a hose (7-3), the edge of the cross section of each convex ball head plate (7-1) is hemispherical, the edge of the inner wall of each concave ball head plate (7-2) is spherical, the convex ball head plates (7-1) are matched with the concave ball head plates (7-2), holes are formed in the middle of each convex ball head plate (7-1) and each concave ball head plate (7-2), the hose (7-3) is installed in each hole, each convex ball head plate (7-1) is fixed on the middle filter plate (8), and each concave ball head plate (7-2) is installed on the middle (8) of the adjacent other filter plates.
4. The multi-chamber sludge high dryness dewatering device according to claim 1 or 2, wherein: the middle filter plate (8) comprises a filter plate body (8-6), a lining plate (8-3), a reinforcing lining cloth (8-2) and filter cloth (8-1), wherein the lining plate (8-3) and the reinforcing lining cloth (8-2) are fixed on two sides of the filter plate body (8-6), the filter cloth (8-1) is arranged on the outer side of the reinforcing lining cloth (8-2), and a plurality of through holes and a plurality of water through grooves are formed in the lining plate (8-3).
5. The multi-chamber sludge high dryness dewatering device according to claim 4, wherein: the filter plate body (8-6) is concave-convex die shaped, one end structure is a male die structure, the other end is a female die structure, a sealing element and a mud scraping ring are arranged on the male die structure, the male die structure of the adjacent filter plate body (8-6) is matched with the female die structure, the male die structure, the female die structure and the sealing element form a filter pressing cavity with adjustable size, an air inlet hole (8-5) and an air vent groove (8-4) are formed in the upper portion of the filter plate body (8-6), and a water through groove (8-7) and a water outlet hole (8-8) are formed in the lower portion of the filter plate body.
6. The multi-chamber sludge high dryness dewatering device according to claim 1, wherein: the middle filter plate (8) slides on a linear guide rail (12) through a bracket (11-1), the linear guide rail (12) is arranged on a frame (14), and a limiting block (13) is further arranged at the end part of the linear guide rail.
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| CN201711016114.5A Active CN107585983B (en) | 2017-04-08 | 2017-10-27 | Municipal sludge depth reduction method for microwave auxiliary treatment |
| CN201711023697.4A Expired - Fee Related CN107555759B (en) | 2017-04-08 | 2017-10-27 | Microwave improves dehydration and drying sludge treating system |
| CN201711023698.9A Active CN107698126B (en) | 2017-04-08 | 2017-10-27 | Microwave improves dehydration and drying sludge treating system |
| CN201711073443.3A Active CN107670353B (en) | 2017-04-08 | 2017-11-05 | Multi-chamber sludge high-dryness dewatering device |
| CN201711073442.9A Active CN107638724B (en) | 2017-04-08 | 2017-11-05 | Embedded multi-cavity sludge high-dryness dewatering device |
| CN201711388377.9A Active CN108503176B (en) | 2017-04-08 | 2017-12-20 | Microwave improves dehydration and drying method for sludge treatment |
| CN201711497457.8A Active CN108101340B (en) | 2017-04-08 | 2017-12-31 | High-dryness sewage sludge dewatering method with double effects of mechanical squeezing and air flow carrying |
| CN201810249136.4A Active CN108358422B (en) | 2017-04-08 | 2018-03-26 | Multi-cavity multi-stage filter pressing sludge dewatering method |
| CN201820406930.0U Expired - Fee Related CN208802977U (en) | 2017-04-08 | 2018-03-26 | A kind of multi-chamber multistage filters pressing sludge dehydration device |
| CN201810255306.XA Active CN108358423B (en) | 2017-04-08 | 2018-03-26 | Multi-cavity multi-stage filter-pressing sludge dewatering device |
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| CN201711016434.0A Active CN107572741B (en) | 2017-04-08 | 2017-10-27 | The municipal sludge depth minus quantization device of microwave-assisted processing |
| CN201711016114.5A Active CN107585983B (en) | 2017-04-08 | 2017-10-27 | Municipal sludge depth reduction method for microwave auxiliary treatment |
| CN201711023697.4A Expired - Fee Related CN107555759B (en) | 2017-04-08 | 2017-10-27 | Microwave improves dehydration and drying sludge treating system |
| CN201711023698.9A Active CN107698126B (en) | 2017-04-08 | 2017-10-27 | Microwave improves dehydration and drying sludge treating system |
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| CN201711073442.9A Active CN107638724B (en) | 2017-04-08 | 2017-11-05 | Embedded multi-cavity sludge high-dryness dewatering device |
| CN201711388377.9A Active CN108503176B (en) | 2017-04-08 | 2017-12-20 | Microwave improves dehydration and drying method for sludge treatment |
| CN201711497457.8A Active CN108101340B (en) | 2017-04-08 | 2017-12-31 | High-dryness sewage sludge dewatering method with double effects of mechanical squeezing and air flow carrying |
| CN201810249136.4A Active CN108358422B (en) | 2017-04-08 | 2018-03-26 | Multi-cavity multi-stage filter pressing sludge dewatering method |
| CN201820406930.0U Expired - Fee Related CN208802977U (en) | 2017-04-08 | 2018-03-26 | A kind of multi-chamber multistage filters pressing sludge dehydration device |
| CN201810255306.XA Active CN108358423B (en) | 2017-04-08 | 2018-03-26 | Multi-cavity multi-stage filter-pressing sludge dewatering device |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN107585983B (en) | 2023-10-24 |
| CN108101340B (en) | 2020-02-04 |
| CN108358422A (en) | 2018-08-03 |
| CN108358423A (en) | 2018-08-03 |
| CN107585983A (en) | 2018-01-16 |
| CN108503176A (en) | 2018-09-07 |
| CN107638724A (en) | 2018-01-30 |
| CN108101340A (en) | 2018-06-01 |
| CN108358422B (en) | 2020-11-27 |
| CN107670353A (en) | 2018-02-09 |
| CN108503176B (en) | 2019-11-01 |
| CN108358423B (en) | 2021-07-02 |
| CN107555759B (en) | 2019-10-01 |
| CN107572741A (en) | 2018-01-12 |
| CN107555759A (en) | 2018-01-09 |
| CN107698126A (en) | 2018-02-16 |
| CN208802977U (en) | 2019-04-30 |
| CN107638724B (en) | 2023-02-07 |
| CN107698126B (en) | 2019-11-01 |
| CN107572741B (en) | 2019-11-19 |
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