CN107905749B - Drilling mud non-landing treatment system and method - Google Patents
Drilling mud non-landing treatment system and method Download PDFInfo
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- CN107905749B CN107905749B CN201711428246.9A CN201711428246A CN107905749B CN 107905749 B CN107905749 B CN 107905749B CN 201711428246 A CN201711428246 A CN 201711428246A CN 107905749 B CN107905749 B CN 107905749B
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- conveying chain
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- filter plate
- cleaned
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- 238000005553 drilling Methods 0.000 title claims abstract description 68
- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000003825 pressing Methods 0.000 claims abstract description 158
- 239000007788 liquid Substances 0.000 claims abstract description 84
- 239000002002 slurry Substances 0.000 claims abstract description 46
- 239000007790 solid phase Substances 0.000 claims abstract description 43
- 239000007791 liquid phase Substances 0.000 claims abstract description 37
- 238000005507 spraying Methods 0.000 claims abstract description 37
- 238000004140 cleaning Methods 0.000 claims abstract description 35
- 238000001914 filtration Methods 0.000 claims abstract description 24
- 210000004907 gland Anatomy 0.000 claims description 31
- 239000007921 spray Substances 0.000 claims description 17
- 238000009825 accumulation Methods 0.000 claims description 16
- 238000011085 pressure filtration Methods 0.000 claims description 11
- 230000004888 barrier function Effects 0.000 claims description 9
- 238000007599 discharging Methods 0.000 claims description 7
- 230000003111 delayed effect Effects 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 5
- 239000004744 fabric Substances 0.000 claims description 4
- 239000000047 product Substances 0.000 description 59
- 230000003014 reinforcing effect Effects 0.000 description 5
- 239000004570 mortar (masonry) Substances 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 210000000078 claw Anatomy 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000012263 liquid product Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 239000012265 solid product Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/06—Arrangements for treating drilling fluids outside the borehole
- E21B21/063—Arrangements for treating drilling fluids outside the borehole by separating components
- E21B21/065—Separating solids from drilling fluids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/01—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
- B01D29/03—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements self-supporting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/96—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor in which the filtering elements are moved between filtering operations; Particular measures for removing or replacing the filtering elements; Transport systems for filters
Landscapes
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Treatment Of Sludge (AREA)
Abstract
The present application provides a drilling mud non-landing treatment system and method, the system comprising: a feed inlet, a liquid outlet and an air inlet; the filter pressing device is connected with the feed inlet and is used for receiving slurry; the filter press device is internally provided with a filter plate for filtering slurry, is connected with the air inlet and is used for filtering the slurry by compressed air to generate a solid-phase product and a liquid-phase product; the filter pressing device is connected with the liquid outlet so as to discharge liquid phase products through the liquid outlet; the filter pressing device is provided with a discharge hole, and the discharge hole is closed when filter pressing is performed; after the filter pressing is finished, a discharge hole is opened to discharge the solid-phase product and the filter plate; the conveyor is positioned below the discharge port of the filter pressing device so as to convey the solid-phase product outwards; the cleaning device comprises a spraying unit and a conveying unit, wherein the conveying unit is aligned with the discharge hole so as to convey the filter plate to be cleaned to the spraying unit for cleaning, and convey the cleaned filter plate back to the filter pressing device.
Description
Technical Field
The application relates to the technical field of drilling waste treatment, in particular to a drilling mud non-falling treatment system and a method.
Background
Drilling mud is one of important pollutants in the petroleum industry, the drilling mud contains clay, chemicals and sewage, a large number of pollutants with different toxicity and different natural degradation properties are contained in the drilling mud, and how to treat the drilling mud is always a technical problem which needs to be solved urgently in the petroleum drilling industry.
In the prior art, one conventional practice is to screen the drilling mud through a vibrating screen to obtain mortar, and then transport the mortar to a subsequent process through a mortar pump. An apparatus and method for separating solids from a solids laden drilling mud as disclosed in application No. 2007800307412, the apparatus comprising: a screen apparatus disposed in the vessel, the screen apparatus comprising a housing and at least one screen in or on the housing, liquid in the material flowing to and through the at least one screen, a primary conveyor below the at least one screen to remove solid material from the vessel.
The screening is realized only through the vibrating screen in the mode, so that the process requirement of drilling mud on non-falling treatment is difficult to meet, and the stability of the liquid-solid quantity of mortar required in the subsequent process is difficult to ensure, so that the effect of the subsequent treatment is directly influenced.
Disclosure of Invention
In view of the foregoing, embodiments of the present application provide a drilling mud non-landing treatment system and method that address the technical deficiencies of the prior art.
The embodiment of the application discloses a drilling mud does not fall to ground processing system, includes:
a feed inlet for delivering slurry, a liquid outlet for discharging liquid, and an air inlet for inputting compressed air;
the filter pressing device is connected with the feed inlet to receive slurry;
the filter press device is internally provided with a filter plate for filtering slurry, is connected with the air inlet and is used for filtering the slurry by compressed air to generate a solid-phase product and a liquid-phase product;
the filter pressing device is connected with a liquid outlet so as to discharge the liquid-phase product through the liquid outlet;
the filter pressing device is provided with a discharge hole, and the discharge hole is closed when filter pressing is performed; after the filter pressing is finished, the discharge hole is opened to discharge the solid-phase product and the filter plate;
the conveyor is positioned below the discharge port of the filter pressing device so as to convey the solid-phase product outwards;
the cleaning device comprises a spraying unit and a conveying unit, wherein the conveying unit is aligned with the discharge hole so as to convey a filter plate to be cleaned to the spraying unit for cleaning, and convey the cleaned filter plate back to the filter pressing device.
In an exemplary embodiment of the present application, the filter press apparatus includes:
the cylinder body is respectively connected with the feeding hole and the air inlet, and the discharging hole is formed in the lower end of the cylinder body;
the cylinder cover is hinged to the lower end of the cylinder body so as to open or close the discharge hole;
at least one through hole is formed in the inner end face of the cylinder cover, a liquid accumulation cavity is formed in the cylinder cover, the through hole is communicated with the liquid accumulation cavity, and the liquid accumulation cavity is communicated with the liquid outlet, so that liquid phase products are discharged.
In an exemplary embodiment of the present application, the cylinder cap is further connected with a first hydraulic cylinder, and the first hydraulic cylinder is connected with a hydraulic station to open or close the cylinder cap under the action of hydraulic pressure of the hydraulic station.
In an exemplary embodiment of the present application, the inner end surface of the cylinder cover is further formed with an annular array of reinforcing ribs.
In an exemplary embodiment of the present application, the inner end surface of the cylinder cover is provided with at least one limiting part to limit the filter plate;
a sealing ring is fixed in the cylinder; after the cylinder cover is closed, the filter plate is fixed under the combined action of the sealing ring and the limiting part.
In an exemplary embodiment of the present application, the cylinder further includes: the second hydraulic cylinder and the gland;
the second hydraulic cylinder is connected with the hydraulic station;
the gland is hinged below the second hydraulic cylinder, and the gland is driven by the second hydraulic cylinder to ascend or descend along the vertical direction;
the inner wall of the cylinder is also fixed with a barrier strip, and when the gland rises to the position of the barrier strip, the gland inclines under the action of the barrier strip; when the gland descends, the gland is converted into a horizontal state.
In an exemplary embodiment of the present application, the conveying unit includes:
the lifting device comprises a first conveying chain, a second conveying chain and a third conveying chain which are horizontally arranged;
one end of the first conveying chain is positioned below the cylinder cover, and when the cylinder cover is opened to a vertical state, the first conveying chain is positioned at two sides of the filter plate and is overlapped with the filter plate so as to convey the filter plate to be cleaned by the first conveying chain;
the second conveying chain is positioned above the first conveying chain, the lifting device is arranged between the first conveying chain and the second conveying chain, the lifting device is connected with the second conveying chain, the first conveying chain conveys a filter plate to be cleaned to the lifting device, and the lifting device is clamped with the filter plate and drives the filter plate to ascend or descend along the vertical direction;
The third conveying chain is arranged between the first conveying chain and the spraying unit, one end of the third conveying chain is overlapped with the other end of the first conveying chain, the spraying unit is located below the second conveying chain, the second conveying chain drives the lifting device to convey the filter plate to be cleaned to the spraying unit for cleaning, after cleaning is finished, the second conveying chain drives the lifting device to convey the cleaned filter plate to one end of the third conveying chain, and the cleaned filter plate is conveyed back to the cylinder cover which is opened in a vertical state through the first conveying chain.
In an exemplary embodiment of the present application, the filter plate includes: a perforated plate and a filter cloth arranged on the perforated plate;
a first lifting part and a second lifting part are formed on the periphery of the orifice plate, the first lifting parts are symmetrically distributed on two sides of the orifice plate, and the second lifting parts are symmetrically distributed on two sides of the orifice plate;
the filter plate is lapped on the first conveying chain through the first lifting part;
the filter plate is clamped with the lifting device through the second lifting part;
the filter plate is lapped on the third conveying chain through the first lifting part.
In an exemplary embodiment of the present application, the spray unit includes: a sump and at least one showerhead disposed within the sump;
A liquid accumulation tank is further connected between the filter pressing device and the liquid outlet, and the spray header is connected with the liquid accumulation tank through a pipeline so as to clean liquid phase products in the liquid accumulation tank to the spray header;
the liquid collecting tank is connected with the feed inlet through a pipeline so as to convey liquid-phase products in the liquid collecting tank back to the feed inlet.
In an exemplary embodiment of the present application, the filter press device is further connected with a vent for the export gas;
electromagnetic valves for controlling the on-off of the pipeline are connected between the feed inlet and the filter pressing device, between the air inlet and the filter pressing device and between the vent and the filter pressing device;
a manual blow-down valve is connected between the discharge port and the filter pressing device;
the filter pressing device is internally provided with a liquid level sensor, when slurry in the filter pressing device is at a high position, the liquid level sensor closes the electromagnetic valve between the feeding hole and the filter pressing device, and opens the electromagnetic valve between the air inlet and the filter pressing device.
In an exemplary embodiment of the present application, the pressure filtration device is connected to a pressure transmitter for detecting pressure, and the pressure transmitter opens a solenoid valve between the pressure filtration device and the vent when detecting that the pressure in the pressure filtration device is greater than a first threshold; when the pressure transmitter detects that the pressure in the filter pressing device is smaller than a second threshold value, closing an electromagnetic valve between the filter pressing device and the vent;
The liquid outlet and the filter pressing device are connected with a flowmeter for detecting flow, when the flow of the flowmeter is zero, the electromagnetic valve between the air inlet and the filter pressing device is closed in a delayed mode, and then the electromagnetic valve between the emptying port and the filter pressing device is opened for emptying.
In an exemplary embodiment of the present application, a slurry pump is further connected between the feed inlet and the filter press; and a liquid supply pump is connected between the spray header and the liquid storage tank.
In an exemplary embodiment of the present application, the number of the filter pressing devices is two, the number of the first conveying chain, the number of the third conveying chain and the number of the lifting devices are two, the number of the second conveying chain is one, and the number of the spraying units is one;
each side of the spraying unit is provided with a filter pressing device, a first conveying chain, a third conveying chain and a lifting device, and the two filter pressing devices alternately operate.
The embodiment of the application also discloses a drilling mud non-landing treatment method, which is used for the drilling mud non-landing treatment system and comprises the following steps:
a1, closing a discharge hole of a filter pressing device, and conveying slurry to the filter pressing device through a feed hole;
A2, closing a feed inlet, inputting compressed air to a filter pressing device through an air inlet for filter pressing, and filter pressing slurry to generate a solid-phase product and a liquid-phase product; wherein the liquid phase product is discharged through the liquid outlet;
a3, after the filter pressing is finished, a discharge hole of the filter pressing device is opened to discharge the solid-phase product and the filter plate to be cleaned;
and a4, conveying the solid-phase product outwards through a conveyor, conveying the filter plate to be cleaned to a spraying unit through a conveying unit for cleaning, conveying the cleaned filter plate back to the filter pressing device, and returning to the step a1.
In an exemplary embodiment of the present application, the filter press apparatus includes: the cylinder body and the cylinder cover are also connected with a first hydraulic cylinder, and the first hydraulic cylinder is connected with the hydraulic station;
in steps a1 and a3, the opening and closing of the cover is effected by the hydraulic pressure of the first hydraulic cylinder.
In an exemplary embodiment of the present application, the cylinder further includes: the second hydraulic cylinder and the gland; the second hydraulic cylinder is connected with the hydraulic station, and the gland is hinged below the second hydraulic cylinder;
after step a2, further comprising:
A0, the gland descends along the vertical direction under the drive of the second hydraulic cylinder to carry out pressure filtration, and the slurry is further pressure-filtered to generate a solid-phase product and a liquid-phase product;
in step a3, after the press filtration is completed, the press cover is driven by the second hydraulic cylinder to rise along the vertical direction, and then the discharge hole of the press filtration device is opened to discharge the solid-phase product and the filter plate to be cleaned.
In an exemplary embodiment of the present application, in step a3, the condition for judging the completion of the press filtration is: the flow of the liquid outlet is zero.
In an exemplary embodiment of the present application, the conveying unit includes: the first conveying chain, the second conveying chain, the third conveying chain and the lifting device are horizontally arranged;
one end of the first conveying chain is positioned below the cylinder cover, the second conveying chain is positioned above the first conveying chain, the lifting device is arranged between the first conveying chain and the second conveying chain, and the lifting device is connected with the second conveying chain;
the third conveying chain is arranged between the first conveying chain and the spraying unit, and one end of the third conveying chain is overlapped with the other end of the first conveying chain;
In step a4, the filter plate to be cleaned is conveyed to a spraying unit for cleaning by a conveying unit, and the cleaned filter plate is conveyed back to the filter pressing device, and the filter pressing device comprises:
a41, when the cylinder cover is opened to be in a vertical state, the first conveying chain is overlapped with the filter plate to be cleaned so as to convey the filter plate to be cleaned;
a42, when the filter plate to be cleaned is conveyed to the lifting device, the lifting device is clamped with the filter plate;
a43, the second conveying chain drives the lifting device to convey the filter plate to be cleaned to the spraying unit so as to clean the filter plate to be cleaned;
a44, the second conveying chain drives the lifting device to convey the cleaned filter plate to a third conveying chain, and the third conveying chain conveys the cleaned filter plate to a cylinder cover opened in a vertical state through the first conveying chain.
According to the drilling mud non-falling treatment system and method, compressed air is introduced into the filter pressing device to realize filter pressing of mud, then liquid-phase products are discharged through the liquid outlet, solid-phase products are discharged through the discharge outlet, the used filter plate is conveyed to the spraying unit to be cleaned and then conveyed back to the filter pressing device, the technological requirements of the drilling mud non-falling treatment can be met, the stability of the solid-phase products is guaranteed, and the processing of subsequent procedures is facilitated.
Secondly, the drilling mud non-floor treatment system of the application cleans the filter plate after carrying out solid-liquid separation on mud every time, thereby repeatedly using the filter plate and saving cost.
In addition, the drilling mud non-landing treatment system can adopt a skid-mounted mode, is flexible to use and occupies a small area.
Drawings
FIG. 1 is a schematic diagram of a drilling mud non-landing treatment system according to an embodiment of the present application;
FIG. 2 is a schematic illustration of a portion of a filter device of a drilling mud non-landing treatment system according to an embodiment of the present application;
FIG. 3 is a schematic view of a portion of a cleaning apparatus of a drilling mud non-landing treatment system according to an embodiment of the present application;
FIG. 4 is a block diagram of a filter press arrangement of a drilling mud non-landing treatment system according to an embodiment of the present application;
FIG. 5 is a perspective view of a filter press apparatus of a drilling mud non-landing treatment system according to an embodiment of the present application;
FIG. 6 is a schematic illustration of the configuration of a cover of a drilling mud non-landing treatment system according to an embodiment of the present application;
FIG. 7 is a schematic illustration of the configuration of a cover of a drilling mud non-landing treatment system according to an embodiment of the present application;
FIG. 8 is a schematic structural view of a gland of a drilling mud non-landing treatment system according to an embodiment of the present application;
FIG. 9 is a schematic structural view of a gland of a drilling mud non-landing treatment system according to an embodiment of the present application;
FIG. 10 is a schematic illustration of the structure of a filter plate of a drilling mud non-landing treatment system according to an embodiment of the present application;
FIGS. 11-14 are perspective block diagrams of drilling mud non-landing treatment systems according to embodiments of the present application;
FIG. 15 is a flow chart of a method of drilling mud non-landing treatment according to an embodiment of the present application;
FIG. 16 is a flow chart of a method of drilling mud non-landing treatment according to an embodiment of the present application;
figure 17 is a flow chart of a method of drilling mud non-landing treatment according to an embodiment of the present application.
Reference numerals
10-drilling mud non-landing treatment system,
20-a filter plate, 201-a pore plate, 202-a filter cloth, 203-a first lifting part, 204-a second lifting part,
30-a compressed air tank, 40-a liquid accumulation tank,
11-an air inlet,
12-a feed inlet, 121-a slurry pump, 122-a liquid supply pump,
13-a vent, 14-a liquid outlet,
15-a filter pressing device, 151-a discharge hole, 152-a cylinder body, 153-a second hydraulic cylinder, 154-a gland,
155-a stop strip,
156, cylinder cover, 561, reinforcing ribs, 562, limit parts, 563, through holes, 564, effusion cavity,
157-a first hydraulic cylinder,
A 16-a cleaning device, wherein the cleaning device comprises a cleaning device,
161-first conveyor chain, 162-lifting device, 163-third conveyor chain, 164-second conveyor chain,
165-spraying unit 651-liquid collecting tank 652-spraying head,
17-conveyor, 18-hydraulic station, 19-electromagnetic valve, 191-blow-down valve and 192-flowmeter.
Detailed Description
The following describes specific embodiments of the present application with reference to the drawings.
In this document, "upper", "lower", "front", "rear", "left", "right", and the like are used merely to indicate relative positional relationships between the relevant portions, and do not limit the absolute positions of the relevant portions.
Herein, "first", "second", etc. are used merely to distinguish one from another, and do not indicate importance and order, and preconditions that are present with respect to one another, etc.
Herein, "equal," "same," etc. are not strictly mathematical and/or geometric limitations, but also include deviations that may be appreciated by those skilled in the art and allowed by fabrication or use, etc.
Unless otherwise indicated, numerical ranges herein include not only the entire range within both of its endpoints, but also the several sub-ranges contained therein.
In order to meet the process requirements of drilling mud non-landing treatment, embodiments of the present application disclose a drilling mud non-landing treatment system 10, see fig. 1-3, which is functionally divided and essentially comprises: a filter pressing device 15 and a cleaning device 16. In addition, the system is also provided with: a feed port 12 for delivering slurry, a liquid outlet port 14 for discharging liquid, an air inlet port 11 for inputting compressed air, and an air discharge port 13 for externally delivering gas.
In this embodiment, referring to fig. 1 and 2, a filter press 15 is connected to the inlet 12 to receive slurry;
a filter plate 20 for filtering slurry is arranged in the filter pressing device 15, and the filter pressing device 15 is connected with the air inlet 11 and is used for generating a solid-phase product and a liquid-phase product by pressing the slurry through compressed air; the solid phase product is mud cake formed by pressing mud, and the liquid phase product is liquid compressed in the mud. It can be seen that in this embodiment, the pressure is provided by compressed air and is filtered by the filter plate 20, so as to jointly realize the function of filter pressing.
The filter pressing device 15 is connected with the liquid outlet 14 to discharge the liquid phase product through the liquid outlet 14;
the filter pressing device 15 is provided with a discharge hole 151, and the discharge hole 151 is closed when filter pressing is performed; after the press filtration is completed, the discharge port 151 is opened to discharge the solid-phase product and the filter plate 20;
a conveyor 17 is also arranged below the discharge port 151 of the filter pressing device 15 to convey the solid-phase product. In this embodiment, the conveyor 17 may be various, such as a chain conveyor, a belt conveyor, etc., and in this embodiment, the conveyor 17 is preferably a belt conveyor.
For a more detailed description of the technical solutions of the present application, the specific structure of the filter pressing device 15 is shown in fig. 4 to 9, and includes: a barrel 152 and a barrel cover 156;
The cylinder 152 is respectively connected with the feed inlet 12 and the air inlet 11, and the discharge outlet 151 is arranged at the lower end of the cylinder 152;
referring to fig. 6 and 7, the cap 156 is hinged to the lower end of the barrel 152 to open or close the discharge port 151;
at least one through hole 563 is formed on the inner end surface of the cylinder cap 156, a effusion cavity 564 is formed in the cylinder cap 156, the through hole 563 is communicated with the effusion cavity 564, and the effusion cavity 564 is communicated with the liquid outlet 14, so as to realize the discharge of the liquid phase product.
Optionally, the cover 156 is opened and closed in various manners, such as screwing, hydraulic closing, etc., and in this embodiment, the cover 156 is further connected to a first hydraulic cylinder 157, and the first hydraulic cylinder 157 is connected to the hydraulic station 18, so as to open or close the cover 156 under the action of the hydraulic pressure of the hydraulic station 18.
Optionally, referring to fig. 6, in order to ensure the bearing strength of the cover 156 during the pressure filtration of the slurry, the inner end surface of the cover 156 is further formed with reinforcing ribs 561. The reinforcing ribs 561 may be arranged in various manners, such as rectangular arrangement and annular arrangement, and in this embodiment, the reinforcing ribs 561 are preferably arranged in an annular manner and integrally formed with the cylinder cover 156 during processing, so as to save processing cost.
Optionally, to better separate the solid phase product from the liquid phase product, in this embodiment, the barrel 152 further comprises: a second hydraulic cylinder 153 and a gland 154; the second hydraulic cylinder 153 is connected to the hydraulic station 18 to receive the pressure provided by the hydraulic station 18; the pressing cover 154 is connected to the lower side of the second hydraulic cylinder 153, and the pressing cover 154 is vertically raised or lowered by the driving of the second hydraulic cylinder 153. By the action of the second hydraulic cylinder 153 and the gland 154, a secondary filter pressing of the slurry is achieved.
Further, the pressing cover 154 may be fixedly connected to the second hydraulic cylinder 153 or may be movably connected to the second hydraulic cylinder 153, and in this embodiment, the pressing cover 154 is preferably hinged to the second hydraulic cylinder 153, see fig. 4 and 5. The inner wall of the barrel 152 is also fixed with a barrier rib 155, when the gland 154 rises to the position of the barrier rib 155, the gland 154 tilts under the action of the barrier rib 155, see fig. 8, so that the gland 154 does not block the blanking of mud during feeding; when the pressing cover 154 descends, the pressing cover 154 is converted into a horizontal state, see fig. 9, so that press filtration of slurry is realized, and the slurry can be uniformly stressed.
Optionally, the inner end surface of the cylinder cap 156 is provided with at least one stopper 562 to limit the filter plate 20, i.e., the stopper 562 is located on the peripheral side of the filter plate 20 when the filter plate 20 is attached to the inner end surface of the cylinder cap 156. In addition, a seal ring (not shown) is fixed in the cylinder 152, and after the cylinder cover 156 is closed, the filter plate 20 is fixed by the combined action of the seal ring and the stopper 562. The sealing effect is achieved by the internal seal ring and the external hydraulic pressure.
Since the stop 562 of the filter plate 20 is merely a stop relationship with the bowl cover 156, and not a fixed relationship, after opening the bowl cover 156, the filter plate 20 is transported and cleaned by the cleaning device 16. The construction and operation of the cleaning device 16 will be described in detail later.
Further, a manual drain valve 191 is further connected between the liquid outlet 14 and the filter pressing device 15, and is used for manually opening a pipeline between the liquid outlet 14 and the filter pressing device 15.
Further, in order to realize automatic control, electromagnetic valves 19 for controlling the on-off of the pipeline are connected between the feed inlet 12 and the filter pressing device 15, between the air inlet 11 and the filter pressing device 15 and between the air outlet 13 and the filter pressing device 15;
A liquid level sensor (not shown in the figure) is arranged in the filter pressing device 15, and when slurry in the filter pressing device 15 is at a high position, the liquid level sensor closes the electromagnetic valve 19 between the feed inlet 12 and the filter pressing device 15, and opens the electromagnetic valve 19 between the air inlet 11 and the filter pressing device 15.
The pressure filtration device 15 is connected with a pressure transmitter (not shown in the figure) for detecting pressure, and the pressure transmitter opens a solenoid valve 19 between the pressure filtration device 15 and the vent 13 when detecting that the pressure in the pressure filtration device 15 is greater than a first threshold value; the pressure transmitter closes the solenoid valve 19 between the filter press 15 and the vent 13 when it detects that the pressure in the filter press 15 is less than a second threshold. In this embodiment, the first threshold is 2.5MPa and the second threshold is 0.1MPa. As will be appreciated by those skilled in the art, the first and second thresholds may be adjusted according to actual use.
Referring to fig. 2 and 4, a flow meter 192 for detecting flow is connected between the liquid outlet 14 and the filter pressing device 15, when the flow of the flow meter 192 is zero, the electromagnetic valve 19 between the air inlet 11 and the filter pressing device 15 is closed in a delayed manner, and then the electromagnetic valve 19 between the air outlet 13 and the filter pressing device 15 is opened for air discharge. In this embodiment, the delay time may be selected to be 5-10 minutes. The function of the delayed shut down is to maintain the pressure in the press 15 and blow dry the moisture in the solid product.
A slurry pump 121 is also connected between the feed inlet 12 and the filter pressing device 15 to realize the transportation of slurry.
Solenoid valves 19 for controlling the on/off of the fluid passage are connected between the first hydraulic cylinder 157 and the hydraulic station 18, and between the second hydraulic cylinder 153 and the hydraulic station 18, respectively.
Through the combined action of the slurry pump 121, the hydraulic station 18, the first hydraulic cylinder 157, the second hydraulic cylinder 153, the electromagnetic valve 19, the liquid level sensor and the pressure transmitter, the filter pressing device 15 of the present embodiment can automatically start feeding, stop feeding, perform primary and secondary filter pressing, blow down and discharge.
Further, the present system also includes a compressed air tank 30 to provide a source of compressed air.
The above is a specific description of the structure of the filter pressing apparatus 15 and the peripheral connection members thereof according to the present embodiment.
In operation, the filter press apparatus 15 is operated as follows:
1) Closing a discharge hole 151 of the filter pressing device 15;
2) Starting a slurry pump 121, and conveying slurry to the filter pressing device 15 through the feed inlet 12;
3) When the liquid level sensor detects that the slurry in the filter pressing device 15 is at a high position, the electromagnetic valve 19 between the feed inlet 12 and the filter pressing device 15 is closed;
4) Opening an electromagnetic valve 19 between the air inlet 11 and the filter pressing device 15, inputting compressed air to the filter pressing device 15 through the air inlet 11 for filter pressing, and filter pressing slurry to generate a solid-phase product and a liquid-phase product;
5) Opening an electromagnetic valve 19 between the second hydraulic cylinder 153 and the hydraulic station 18, and performing pressure filtration on slurry through a gland 154 to generate a solid-phase product and a liquid-phase product;
6) When the flow of the liquid outlet 14 is zero, the electromagnetic valve 19 between the air inlet 11 and the filter pressing device 15 is closed in a delayed mode, and then the electromagnetic valve 19 between the air outlet 13 and the filter pressing device 15 is opened for air discharging.
7) When the pressure transmitter detects that the pressure in the filter pressing device 15 is smaller than the second threshold value, the electromagnetic valve 19 between the first hydraulic cylinder 157 and the hydraulic station 18 is opened to open the discharge port 151 of the filter pressing device 15 for discharging the solid-phase product and the filter plate 20 to be cleaned.
8) The solid-phase product is transported out through the conveyor 17, and the filter plate 20 to be cleaned is conveyed to the cleaning device 16 for cleaning.
In practical application, the filter pressing device 15 in the system can be at least one, and the at least one filter pressing device 15 runs alternately, so that slurry is continuously treated, and the filter pressing efficiency is improved. As shown in fig. 1-2, the number of filter pressing devices 15 in the system is two, and the two filter pressing devices 15 are respectively connected with the feed inlet 12, the liquid outlet 14, the air inlet 11 and the air outlet 13, and the on-off of each pipeline is controlled by at least one electromagnetic valve 19 arranged in the system so as to realize the alternate operation of the two filter pressing devices 15. The specific control process of at least one filter pressing device 15 is not described in detail in this embodiment.
The above description has been given of the structure of the filter press device 15, and the following description has been given of the structure of the cleaning device 16 of the present application.
Referring to fig. 1 and 3, the cleaning apparatus 16 of the drilling mud non-landing treatment system 10 of the present application includes: the spray unit 165 and the delivery unit are aligned with the discharge port 151 to deliver the filter plate 20 to be cleaned to the spray unit 165 for cleaning and to deliver the cleaned filter plate 20 back to the filter press device 15.
Wherein, the conveying unit includes: a lifting device 162, and a first conveying chain 161, a second conveying chain 164 and a third conveying chain 163 which are horizontally arranged.
The first conveyor chain 161, the second conveyor chain 164, the third conveyor chain 163, and the lifting device 162 are all motor-driven controlled.
The lifting mechanism 162 may be of various types, and is provided in this application as a claw structure that clamps or unclamps the filter plate 20.
One end of a first conveying chain 161 is positioned below the cylinder cover 156, and when the cylinder cover 156 is opened to a vertical state, the first conveying chain 161 is positioned at two sides of the filter plate 20 and is overlapped with the filter plate 20, so that the first conveying chain 161 conveys the filter plate 20 to be cleaned;
the second conveying chain 164 is located above the first conveying chain 161, the lifting device 162 is disposed between the first conveying chain 161 and the second conveying chain 164, the lifting device 162 is connected with the second conveying chain 164, the first conveying chain 161 conveys the filter plate 20 to be cleaned to the lifting device 162, and the lifting device 162 is clamped with the filter plate 20 and drives the filter plate 20 to ascend or descend along the vertical direction;
The third conveying chain 163 is arranged between the first conveying chain 161 and the spraying unit 165, one end of the third conveying chain 163 is overlapped with the other end of the first conveying chain 161, the spraying unit 165 is positioned below the second conveying chain 164, the second conveying chain 164 drives the lifting device 162 to convey the filter plate 20 to be cleaned to the spraying unit 165 for cleaning, after cleaning, the second conveying chain 164 drives the lifting device 162 to convey the cleaned filter plate 20 to one end of the third conveying chain 163, and then the cleaned filter plate 20 is conveyed back to the cylinder cover 156 which is opened in a vertical state through the first conveying chain 161.
The first conveying chain 161, the second conveying chain 164, and the third conveying chain 163 are all driven by motors. It should be noted that the first conveyance chain 161 is reversed in its direction of rotation when conveying the filter plates 20 to the shower unit 165 and when conveying the cleaned filter plates 20 to the filtering device, which requires control of the direction of rotation of the first conveyance chain 161; also, the second conveyor chain 164 is reversed in its direction of rotation when conveying the filter plates 20 to be cleaned to the shower unit 165 and the cleaned filter plates 20 to the third conveyor chain 163, which requires control of the direction of rotation of the second conveyor chain 164.
When there are two press filtration apparatuses 15, there are two first conveyor chains 161, two third conveyor chains 163, and two hoisting apparatuses 162, one second conveyor chain 164, and one shower unit 165. Each side of the spray unit 165 is provided with a filter press 15, a first conveyor chain 161, a third conveyor chain 163 and a lifting device 162 to ensure that the two filter presses 15 operate alternately to process the slurry without interruption.
Referring to fig. 10, the structure of the filter sheet 20 in the present embodiment includes: a perforated plate 201 and a filter cloth 202 disposed on the perforated plate 201; the first lifting parts 203 and the second lifting parts 204 are formed on the periphery side of the orifice plate 201, the first lifting parts 203 are symmetrically distributed on two sides of the orifice plate 201, and the second lifting parts 204 are symmetrically distributed on two sides of the orifice plate 201.
The filter plates 20 are overlapped with the first conveyor chain 161 by the first lifting part 203; the filter plate 20 is clamped with the lifting device 162 through the second lifting part 204; the filter plates 20 are overlapped with the third conveyor chain 163 by the first hanging portion 203.
In addition, the shower unit 165 includes: a sump 651 and at least one showerhead 652 disposed within the sump 651;
A liquid storage tank 40 is also connected between the spray header 652 and the liquid outlet 14, and the spray header 652 is connected with the liquid storage tank 40 through a pipeline so as to clean liquid phase products in the liquid storage tank 40 to the spray header 652;
the liquid sump 651 is connected to the feed inlet 12 by a pipe to convey the liquid phase product in the liquid sump 651 back to the feed inlet 12.
Further, a liquid supply pump 122 is connected between the spray header 652 and the liquid accumulation tank 40 to convey the liquid phase product in the liquid accumulation tank 40 to the spray header 652 for cleaning.
In operation, the cleaning device 16 is operated as follows:
1) When the cylinder cover 156 is opened to the vertical state, the first conveying chain 161 is overlapped with the filter plates 20 to be cleaned to convey the filter plates 20 to be cleaned;
2) When the filter plate 20 to be cleaned is conveyed to the lifting device 162, the lifting device 162 is clamped with the filter plate 20 to be cleaned;
3) The second conveying chain 164 drives the lifting device 162 which is clamped with the filter plate 20 to be cleaned to the spraying unit 165 so as to clean the filter plate 20 to be cleaned;
4) The second conveying chain 164 drives the lifting device 162, which is clamped with the cleaned filter plate 20, to the third conveying chain 163, the third conveying chain 163 conveys the cleaned filter plate 20 to the cylinder cover 156 opened in a vertical state through the first conveying chain 161, and the filter plate 20 is limited by the limiting part 562.
It should be noted that, the cleaning device 16 can be independently operated to clean the filter plates 20, so that more than one filter plate 20 can be cleaned on the third conveying chain 163, and thus the filter plates 20 can be replaced in time when the system is actually operated, such as when the filter plates 20 are damaged or other emergency conditions are met, long-time waiting of the system is avoided, and the processing efficiency is improved.
The second conveyor chain 164 sequentially discharges the cleaned filter plates 20 to the third conveyor chain 163 in a direction approaching the shower unit 165, and the third conveyor chain 163 conveys the filter plate 20 closest to the filter press device 15 each time the filter plates 20 are conveyed, thereby fully utilizing each filter plate 20.
To more intuitively embody the spatial arrangement and structure of the various components of the present embodiment, fig. 11-14 are perspective views of the various angles of the drilling mud non-landing treatment system 10 of the present embodiment.
To sum up, in the drilling mud non-falling to the ground processing system 10 provided by the application, the compressed air is introduced into the filter pressing device 15 to realize the filter pressing of the mud, then the liquid phase product is discharged through the liquid outlet 14, the solid phase product is discharged through the discharge outlet 151, the used filter plate 20 is conveyed to the spraying unit 165 to be cleaned and then conveyed back to the filter pressing device 15, so that the process requirement of the drilling mud non-falling to the ground processing can be met, the stability of the solid phase product is ensured, and the processing of the subsequent procedures is facilitated.
Secondly, the drilling mud non-floor treatment system 10 of the application cleans the filter plate 20 after carrying out solid-liquid separation on mud every time, thereby repeatedly using the filter plate 20 and saving cost.
In addition, the drilling mud non-landing treatment system 10 of the present application can be in skid-mounted mode, and is flexible in use and small in occupied area.
When in actual use, the main parameters of the system are as follows: the design pressure is 2.5MPa; the working temperature of the adaptive medium is more than or equal to 5 ℃; the medium is drilling mud; the material is carbon steel; the device gauge size (length x width x height) is 9000 x 2700 x 3350 (mm).
The embodiments also disclose a drilling mud non-landing treatment method, see fig. 15, for a drilling mud non-landing treatment system 10 as described above, comprising:
a1, closing a discharge hole 151 of the filter pressing device 15, and conveying slurry to the filter pressing device 15 through a feed hole 12;
a2, closing a feed inlet 12, inputting compressed air to a filter pressing device 15 through an air inlet 11 for filter pressing, and filter pressing slurry to generate a solid-phase product and a liquid-phase product; wherein the liquid phase product is discharged via the liquid outlet 14;
a3, after the press filtration is completed, a discharge hole 151 of the press filtration device 15 is opened to discharge the solid-phase product and the filter plate 20 to be cleaned;
a4, conveying the solid-phase product out through the conveyor 17, conveying the filter plate 20 to be cleaned to the spraying unit 165 through the conveying unit for cleaning, conveying the cleaned filter plate 20 back to the filter pressing device 15, and returning to the step a1.
According to the drilling mud non-falling processing method, compressed air is introduced into the filter pressing device 15 to realize filter pressing of mud, then liquid-phase products are discharged through the liquid outlet 14, solid-phase products are discharged through the discharge outlet 151, the used filter plate 20 is conveyed to the spraying unit 165 to be cleaned and then conveyed back to the filter pressing device 15, the process requirement of non-falling processing of the drilling mud can be met, the stability of the solid-phase products is guaranteed, and the processing of subsequent procedures is facilitated.
Specifically, in steps a1 and a3, the opening and closing of the cylinder cap 156 is achieved by the hydraulic pressure of the first hydraulic cylinder 157.
Specifically, in step a3, the conditions for judging the completion of the press filtration are as follows: the flow rate of the liquid outlet 14 is zero.
In addition, referring to fig. 16, in step a4, the filter plate 20 to be cleaned is conveyed to the spray unit 165 by the conveying unit to be cleaned, and the cleaned filter plate 20 is conveyed back to the filter pressing device 15, including:
a41, when the cylinder cover 156 is opened to a vertical state, the first conveying chain 161 is overlapped with the filter plate 20 to be cleaned so as to convey the filter plate 20 to be cleaned;
a42, when the filter plate 20 to be cleaned is conveyed to the lifting device 162, the lifting device 162 is clamped with the filter plate 20;
a43, the second conveying chain 164 drives the lifting device 162 to convey the filter plate 20 to be cleaned to the spraying unit 165 so as to clean the filter plate 20 to be cleaned;
a44, the second conveying chain 164 drives the lifting device 162 to convey the cleaned filter plates 20 to a third conveying chain 163, and the third conveying chain 163 conveys the cleaned filter plates 20 to the cylinder cover 156 opened in a vertical state through the first conveying chain 161.
In an embodiment of the present application, another method for treating drilling mud without landing is also disclosed, see fig. 17, comprising:
a1, closing a discharge hole 151 of the filter pressing device 15, and conveying slurry to the filter pressing device 15 through a feed hole 12;
a2, closing a feed inlet 12, inputting compressed air to a filter pressing device 15 through an air inlet 11 for filter pressing, and filter pressing slurry to generate a solid-phase product and a liquid-phase product; wherein the liquid phase product is discharged via the liquid outlet 14;
a0, the gland 154 descends along the vertical direction under the drive of the second hydraulic cylinder 153 to carry out pressure filtration, and the slurry is further pressure-filtered to generate a solid-phase product and a liquid-phase product;
a3, after the press filtration is completed, the press cover 154 is driven by the second hydraulic cylinder 153 to rise vertically, and then the discharge hole 151 of the press filtration device 15 is opened to discharge the solid-phase product and the filter plate 20 to be cleaned;
a4, conveying the solid-phase product out through the conveyor 17, conveying the filter plate 20 to be cleaned to the spraying unit 165 through the conveying unit for cleaning, conveying the cleaned filter plate 20 back to the filter pressing device 15, and returning to the step a1.
In addition, the cleaning process in step a4 is the same as that of the above embodiment, and the description thereof is omitted.
According to the drilling mud non-floor treatment method, primary filter pressing of mud is achieved through introducing compressed air into the filter pressing device 15, and secondary filter pressing is achieved through the gland 154, so that effective separation of solid-liquid products is guaranteed.
Then, the liquid phase product is discharged through the liquid outlet 14, the solid phase product is discharged through the discharge outlet 151, and the used filter plate 20 is conveyed to the spraying unit 165 for cleaning and then conveyed back to the filter pressing device 15, so that the process requirement of drilling mud on non-falling treatment can be met, the stability of the solid phase product is ensured, and the processing of subsequent procedures is facilitated.
The preferred embodiments and examples of the present application have been described in detail with reference to the accompanying drawings, but the present application is not limited to the embodiments and examples described above, and various changes may be made within the knowledge of those skilled in the art without departing from the spirit of the present application.
Claims (15)
1. A drilling mud non-landing treatment system (10), comprising:
a feed port (12) for delivering slurry, a liquid outlet port (14) for discharging liquid, and an air inlet port (11) for inputting compressed air;
the filter pressing device (15) is connected with the feed inlet (12) to receive slurry;
a filter plate (20) for filtering slurry is arranged in the filter pressing device (15), and the filter pressing device (15) is connected with the air inlet (11) and is used for filtering the slurry to generate a solid-phase product and a liquid-phase product through compressed air;
the filter pressing device (15) is connected with a liquid outlet (14) so as to discharge the liquid-phase product through the liquid outlet (14);
the filter pressing device (15) is provided with a discharge hole (151), and the discharge hole (151) is closed when filter pressing is performed; after the press filtration is completed, the discharge port (151) is opened to discharge the solid phase product and the filter plate (20); the filter pressing device (15) comprises a cylinder body (152) and a cylinder cover (156), the cylinder body (152) is respectively connected with the feeding port (12) and the air inlet (11), and the discharging port (151) is arranged at the lower end of the cylinder body (152); the cylinder cover (156) is hinged to the lower end of the cylinder body (152) so as to open or close the discharge hole (151); at least one through hole (563) is formed in the inner end surface of the cylinder cover (156), a liquid accumulation cavity (564) is formed in the cylinder cover (156), the through hole (563) is communicated with the liquid accumulation cavity (564), and the liquid accumulation cavity (564) is communicated with the liquid outlet (14) so as to realize the discharge of liquid phase products;
Also included within the cartridge (152) is: a second hydraulic cylinder (153) and a gland (154); the second hydraulic cylinder (153) is connected with a hydraulic station (18); the gland (154) is hinged below the second hydraulic cylinder (153), and the gland (154) is driven by the second hydraulic cylinder (153) to ascend or descend along the vertical direction; the inner wall of the barrel body (152) is also fixed with a barrier rib (155), and when the gland (154) rises to the position of the barrier rib (155), the gland (154) inclines under the action of the barrier rib (155); when the gland (154) descends, the gland (154) is converted into a horizontal state;
a conveyor (17), wherein the conveyor (17) is positioned below a discharge hole (151) of the filter pressing device (15) so as to convey the solid-phase product outwards;
the cleaning device (16), the cleaning device (16) comprises a spraying unit (165) and a conveying unit, the conveying unit is aligned with the discharge hole (151) so as to convey a filter plate (20) to be cleaned to the spraying unit (165) for cleaning, and convey the cleaned filter plate (20) back to the filter pressing device (15);
The conveying unit comprises a lifting device (162), a first conveying chain (161), a second conveying chain (164) and a third conveying chain (163) which are horizontally arranged; one end of the first conveying chain (161) is positioned below the cylinder cover (156), and when the cylinder cover (156) is opened to a vertical state, the first conveying chain (161) is positioned at two sides of the filter plate (20) and is overlapped with the filter plate (20) so as to realize that the first conveying chain (161) conveys the filter plate (20) to be cleaned;
the second conveying chain (164) is located above the first conveying chain (161), the lifting device (162) is arranged between the first conveying chain (161) and the second conveying chain (164), the lifting device (162) is connected with the second conveying chain (164), the first conveying chain (161) conveys a filter plate (20) to be cleaned to the lifting device (162), and the lifting device (162) is clamped with the filter plate (20) and drives the filter plate (20) to ascend or descend along the vertical direction;
the third conveying chain (163) is arranged between the first conveying chain (161) and the spraying unit (165), one end of the third conveying chain (163) is overlapped with the other end of the first conveying chain (161), the spraying unit (165) is located below the second conveying chain (164), the second conveying chain (164) drives the lifting device (162) to convey the filter plate (20) to be cleaned to the spraying unit (165) for cleaning, and after the cleaning is finished, the second conveying chain (164) drives the lifting device (162) to convey the cleaned filter plate (20) to one end of the third conveying chain (163), and then the cleaned filter plate (20) is conveyed back to the cylinder cover (156) which is opened in a vertical state through the first conveying chain (161).
2. Drilling mud non-landing treatment system (10) according to claim 1, characterized in that,
the cylinder cover (156) is also connected with a first hydraulic cylinder (157), and the first hydraulic cylinder (157) is connected with the hydraulic station (18) so as to realize opening or closing of the cylinder cover (156) under the action of the hydraulic pressure of the hydraulic station (18).
3. The drilling mud non-landing treatment system (10) of claim 1, wherein the inner end surface of the cap (156) is further formed with an annular array of ribs (561).
4. Drilling mud non-landing treatment system (10) according to claim 1, characterized in that,
at least one limiting part (562) is arranged on the inner end surface of the cylinder cover (156) so as to limit the filter plate (20);
a sealing ring is fixed in the cylinder (152);
after the cylinder cover (156) is closed, the filter plate (20) is fixed under the combined action of the sealing ring and the limiting part (562).
5. Drilling mud non-landing treatment system (10) according to claim 1, characterized in that,
the filter sheet (20) comprises: a perforated plate (201) and a filter cloth (202) arranged on the perforated plate (201);
A first lifting part (203) and a second lifting part (204) are formed on the periphery of the orifice plate (201), the first lifting parts (203) are symmetrically distributed on two sides of the orifice plate (201), and the second lifting parts (204) are symmetrically distributed on two sides of the orifice plate (201);
the filter plate (20) is lapped on the first conveying chain (161) through the first lifting part (203);
the filter plate (20) is clamped with the lifting device (162) through the second lifting part (204);
the filter plate (20) is overlapped with the third conveying chain (163) through the first lifting part (203).
6. The drilling mud non-landing treatment system (10) of claim 1, wherein the spray unit (165) comprises: a sump (651) and at least one showerhead (652) disposed within the sump (651);
a liquid accumulation tank (40) is further connected between the filter pressing device (15) and the liquid outlet (14), and the spray header (652) is connected with the liquid accumulation tank (40) through a pipeline so as to clean liquid phase products in the liquid accumulation tank (40) to the spray header (652);
the liquid collecting tank (651) is connected with the feed inlet (12) through a pipeline so as to convey liquid-phase products in the liquid collecting tank (651) back to the feed inlet (12).
7. Drilling mud non-landing treatment system (10) according to claim 1, characterized in that,
the filter pressing device (15) is also connected with an air outlet (13) for outputting gas;
electromagnetic valves (19) for controlling the on-off of a pipeline are connected between the feeding port (12) and the filter pressing device (15), between the air inlet (11) and the filter pressing device (15) and between the emptying port (13) and the filter pressing device (15);
a manual blow-down valve (191) is connected between the liquid outlet (14) and the filter pressing device (15);
the filter-pressing device (15) is internally provided with a liquid level sensor, when slurry in the filter-pressing device (15) is at a high position, the liquid level sensor closes an electromagnetic valve (19) between the feed inlet (12) and the filter-pressing device (15), and opens the electromagnetic valve (19) between the air inlet (11) and the filter-pressing device (15).
8. Drilling mud non-landing treatment system (10) according to claim 7, characterized in that the filter press (15) is connected to a pressure transmitter for detecting pressure, which pressure transmitter, upon detecting a pressure in the filter press (15) being greater than a first threshold value, opens a solenoid valve (19) between the filter press (15) and the vent (13); when the pressure transmitter detects that the pressure in the filter pressing device (15) is smaller than a second threshold value, a solenoid valve (19) between the filter pressing device (15) and the vent (13) is closed;
A flow meter (192) for detecting flow is connected between the liquid outlet (14) and the filter pressing device (15), when the flow of the flow meter (192) is zero, the electromagnetic valve (19) between the air inlet (11) and the filter pressing device (15) is closed in a delayed mode, and then the electromagnetic valve (19) between the air outlet (13) and the filter pressing device (15) is opened for air discharge.
9. Drilling mud non-landing treatment system (10) according to claim 6, characterized in that,
a slurry pump (121) is also connected between the feed inlet (12) and the filter pressing device (15);
a liquid supply pump (122) is connected between the spray header (652) and the liquid accumulation tank (40).
10. Drilling mud non-landing treatment system (10) according to claim 1, characterized in that,
the number of the filter pressing devices (15) is two, the number of the first conveying chain (161), the number of the third conveying chain (163) and the number of the lifting devices (162) are two, the number of the second conveying chain (164) is one, and the number of the spraying units (165) is one;
each side of the spraying unit (165) is provided with a filter pressing device (15), a first conveying chain (161), a third conveying chain (163) and a lifting device (162), and the two filter pressing devices (15) alternately operate.
11. A method of drilling mud non-landing treatment, characterized by a drilling mud non-landing treatment system (10) according to any one of claims 1-10, comprising:
a1, closing a discharge hole (151) of the filter pressing device (15), and conveying slurry to the filter pressing device (15) through a feed hole (12);
a2, closing a feed inlet (12), inputting compressed air to a filter pressing device (15) through an air inlet (11) for filter pressing, and filter pressing slurry to generate a solid-phase product and a liquid-phase product; wherein the liquid phase product is discharged through a liquid outlet (14);
a3, after the press filtration is completed, a discharge hole (151) of the press filtration device (15) is opened to discharge the solid-phase product and the filter plate (20) to be cleaned;
and a4, conveying the solid-phase product out through a conveyor (17), conveying the filter plate (20) to be cleaned to a spraying unit (165) through a conveying unit for cleaning, conveying the cleaned filter plate (20) back to the filter pressing device (15), and returning to the step a1.
12. A drilling mud non-landing treatment method according to claim 11, characterized in that the filter press device (15) comprises: the cylinder body (152) and the cylinder cover (156), wherein the cylinder cover (156) is also connected with a first hydraulic cylinder (157), and the first hydraulic cylinder (157) is connected with the hydraulic station (18);
In steps a1 and a3, the opening and closing of the cover (156) is effected by the hydraulic pressure of the first hydraulic cylinder (157).
13. The drilling mud non-landing treatment method of claim 11, wherein the barrel (152) further comprises, within: a second hydraulic cylinder (153) and a gland (154); the second hydraulic cylinder (153) is connected with the hydraulic station (18), and the gland (154) is hinged below the second hydraulic cylinder (153);
after step a2, further comprising:
a0, the gland (154) descends along the vertical direction under the drive of the second hydraulic cylinder (153) to carry out pressure filtration, and the slurry is further pressure-filtered to generate a solid-phase product and a liquid-phase product;
in step a3, after the press filtration is completed, the press cover (154) is driven by the second hydraulic cylinder (153) to rise vertically, and then the discharge port (151) of the press filtration device (15) is opened to discharge the solid-phase product and the filter plate (20) to be cleaned.
14. The drilling mud non-landing treatment method according to claim 11, wherein in step a3, the filter-pressing completion determination condition is: the flow rate of the liquid outlet (14) is zero.
15. The drilling mud non-landing treatment method of claim 11, wherein the conveying unit comprises: a first conveying chain (161), a second conveying chain (164), a third conveying chain (163) and a lifting device (162) which are horizontally arranged;
one end of the first conveying chain (161) is positioned below the cylinder cover (156), the second conveying chain (164) is positioned above the first conveying chain (161), the lifting device (162) is arranged between the first conveying chain (161) and the second conveying chain (164), and the lifting device (162) is connected with the second conveying chain (164);
the third conveying chain (163) is arranged between the first conveying chain (161) and the spraying unit (165), and one end of the third conveying chain (163) is overlapped with the other end of the first conveying chain (161);
in step a4, the filter plate (20) to be cleaned is conveyed to a spraying unit (165) through a conveying unit to be cleaned, and the cleaned filter plate (20) is conveyed back to the filter pressing device (15), and the filter pressing device comprises:
a41, when the cylinder cover (156) is opened to a vertical state, the first conveying chain (161) is overlapped with the filter plate (20) to be cleaned so as to convey the filter plate (20) to be cleaned;
a42, when the filter plate (20) to be cleaned is conveyed to the lifting device (162), the lifting device (162) is clamped with the filter plate (20);
a43, the second conveying chain (164) drives the lifting device (162) to convey the filter plate (20) to be cleaned to the spraying unit (165) so as to clean the filter plate (20) to be cleaned;
a44, the second conveying chain (164) drives the lifting device (162) to convey the cleaned filter plate (20) to a third conveying chain (163), and the third conveying chain (163) conveys the cleaned filter plate (20) to a cylinder cover (156) which is opened in a vertical state through the first conveying chain (161).
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| CN110005352B (en) * | 2019-06-05 | 2019-08-16 | 中国石油大学(华东) | The level-one solid-liquid separating method of drilling fluid reclamation in a kind of oil drilling |
| CN114179421A (en) * | 2021-11-24 | 2022-03-15 | 北京嘉博文生物科技有限公司 | Kitchen garbage debris dewatering device |
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