CN112122090A - Solid-liquid-gas separation integrated screen for drilling mud - Google Patents
Solid-liquid-gas separation integrated screen for drilling mud Download PDFInfo
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- CN112122090A CN112122090A CN202011082437.6A CN202011082437A CN112122090A CN 112122090 A CN112122090 A CN 112122090A CN 202011082437 A CN202011082437 A CN 202011082437A CN 112122090 A CN112122090 A CN 112122090A
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- 238000000926 separation method Methods 0.000 title claims abstract description 26
- 238000005096 rolling process Methods 0.000 claims abstract description 42
- 238000012216 screening Methods 0.000 claims abstract description 32
- 230000005284 excitation Effects 0.000 claims abstract description 16
- 239000002002 slurry Substances 0.000 claims abstract description 16
- 239000007787 solid Substances 0.000 claims abstract description 4
- 238000004140 cleaning Methods 0.000 claims description 33
- 238000007667 floating Methods 0.000 claims description 19
- 239000007788 liquid Substances 0.000 claims description 19
- 238000001914 filtration Methods 0.000 claims description 12
- 230000007246 mechanism Effects 0.000 claims description 8
- 239000004033 plastic Substances 0.000 claims description 3
- 238000005265 energy consumption Methods 0.000 abstract description 7
- 238000000034 method Methods 0.000 description 12
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/10—Screens in the form of endless moving bands
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/28—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/42—Drive mechanisms, regulating or controlling devices, or balancing devices, specially adapted for screens
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
- B07B1/4609—Constructional details of screens in general; Cleaning or heating of screens constructional details of screening surfaces or meshes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
- B07B1/50—Cleaning
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
- B07B1/50—Cleaning
- B07B1/52—Cleaning with brushes or scrapers
- B07B1/522—Cleaning with brushes or scrapers with brushes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
- B07B1/50—Cleaning
- B07B1/55—Cleaning with fluid jets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B2230/00—Specific aspects relating to the whole B07B subclass
- B07B2230/01—Wet separation
Landscapes
- Filtration Of Liquid (AREA)
Abstract
The embodiment of the invention discloses a solid-liquid-gas separation integrated screen for drilling mud, and belongs to the technical field of oil field drilling solid control equipment. The rolling chain type screening device, the negative pressure slurry collecting device and the pneumatic vibration excitation device are arranged in the main body frame, the fan is arranged on one side of the main body frame, and a suction port of the fan is communicated with the negative pressure slurry collecting device through the exhaust system and the connecting channel in sequence. The invention integrates the solid-liquid-gas separation function of the slurry, has the characteristics of small energy consumption, large treatment capacity and small occupied area, and has simple structure and safe and reliable performance of the whole machine.
Description
Technical Field
The invention relates to the technical field of solid-liquid-gas separation integrated sieves for drilling mud in oil fields, in particular to a solid-liquid-gas separation integrated sieve for drilling mud.
Background
The well drilling vibrating screen is mainly used for treating solid-phase particles in well drilling mud to realize solid-liquid separation. With the continuous development of petroleum machinery, the petroleum machinery is used as key equipment of a solid control system of petroleum drilling and has been widely applied.
At present, an existing excitation type vibrating screen is large in vibration, high in requirement on an installation base, high in splashing of drilling fluid due to vibration, particularly high in splashing of the drilling fluid in oil-based mud, poor in cleaning, easy in accumulation of materials, and further capable of blocking meshes, and large cleaning work is needed. When the screening granularity reaches more than 200 meshes, the screen is not well screened, meshes are easy to block or run, materials are discharged forwards in a movable mode, solid-phase rock debris and the like contained in drilling fluid can impact the screen, and therefore the service life of the screen is shortened.
The screening granularity of the existing excitation type vibrating screen can reach 240 meshes to the maximum extent, the handling capacity is small, and the vibrating screen and the deaerator are respectively independent solid control equipment, so that the vibrating screen has the defects of large energy consumption, large occupied area and the like.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides a solid-liquid-gas separation integrated screen for drilling mud, replaces the existing vibrating screen and a degasser, has low energy consumption, can screen materials with the screening degree of over 320 meshes, has large treatment capacity, and solves the technical problems of small treatment capacity, large energy consumption and large occupied area of the existing equipment.
In order to achieve the purpose, the invention adopts the following technical scheme: a solid-liquid-gas separation integrated screen for drilling mud comprises a main body frame, wherein a rolling chain type screening device, a negative pressure mud collecting device and a pneumatic vibration excitation device positioned at the top of the negative pressure mud collecting device are arranged inside the main body frame;
the rolling chain type screening device comprises a driving chain wheel, a driven chain wheel, a tension wheel, a chain and a screen, wherein the driving chain wheel and the driven chain wheel are respectively arranged at two ends of a main body frame;
and a fan is arranged on one side of the main body frame, and a suction port of the fan is communicated with the negative pressure slurry collecting device sequentially through an exhaust system and a connecting channel.
As an improvement of the invention, the chain is made of plastic materials and comprises a chain main body, a limiting pin and a connecting pin shaft;
the chain main body comprises a cylindrical screen cloth supporting part and a chain wheel meshing part, the highest point of the chain wheel meshing part is lower than that of the screen cloth supporting part, a limiting hole matched with a limiting pin is formed in the screen cloth supporting part, and the outer diameter of the connecting pin shaft is matched with the inner diameter of the screen cloth supporting part.
As an improvement of the invention, a liquid discharge system communicated with the exhaust system is arranged below the exhaust system;
the liquid discharge system comprises a floating ball, a liquid discharge port matched with the floating ball in shape is arranged under the floating ball, and when the fan sucks, the floating ball seals the liquid discharge port.
As an improvement of the invention, the exhaust system comprises a primary filter and a secondary filter which are communicated with each other, and the secondary filter is communicated with a suction port of the fan;
the first-stage filter is of a sheet-shaped staggered filtering structure, and the second-stage filter is of a net-shaped filtering structure.
As an improvement of the invention, a bottom plate is arranged at the bottom of the main body frame, and a rolling type chain cleaning device for cleaning the bottom plate is arranged below the rolling type chain screening device;
the rolling type chain cleaning device comprises a rolling chain device and brushes, and at least three brushes are connected to the rolling chain device and roll along with the rolling chain device.
As an improvement of the invention, the number of the hairbrushes is six, and the hairbrushes are uniformly distributed on the rolling chain device.
As an improvement of the invention, the front end and the rear end of the main body frame are provided with nozzle cleaning mechanisms, and the nozzle cleaning mechanisms are arranged on the inner side of the chain and used for carrying out back cleaning on the chain.
As an improvement of the invention, the pneumatic vibration excitation device comprises a chain support bar, a fixed plate, a pneumatic vibration exciter and a buffer spring;
the number of the fixing plates is at least two, the fixing plates are transversely connected to the top of the negative pressure slurry collecting device, and the number of the chain support bars is at least two, and the chain support bars are longitudinally connected to two adjacent fixing plates;
the buffer spring is arranged between the fixed plate and the chain supporting bar, and the pneumatic vibration exciter is arranged on the lower plane of the chain supporting bar.
As an improvement of the invention, the included angle between the chain support bar and the longitudinal central plane of the main body frame is 5-10 degrees.
As an improvement of the invention, a safety guardrail is arranged at the bottom of the front end of the main body frame.
The invention has the beneficial effects that: a solid-liquid-gas separation integrated screen for drilling mud is characterized in that a rolling chain type screening device, a negative pressure mud collecting device and a pneumatic vibration excitation device are arranged inside a main body frame, a fan is arranged on one side of the main body frame, and a suction opening of the fan is communicated with the negative pressure mud collecting device sequentially through an exhaust system and a connecting channel. By arranging the rolling chain type screening device, materials are discharged forwards in a rolling mode along with the screen in the screening process, and the screen is not easy to block; in addition, the negative pressure mud collecting device is sucked by the fan to ensure that the inner cavity of the negative pressure mud collecting device is vacuumized, the higher treatment capacity of the drilling mud can be realized through the double functions of the pressure difference between the upper part and the lower part of the screen and the pneumatic excitation device, the screening granularity can reach more than 320 meshes, and great convenience is brought to the subsequent treatment; the mud entering the negative pressure mud collecting device through the screen mesh is broken and released by the negative pressure, and is discharged from the exhaust port; the invention integrates the solid-liquid-gas separation function of the slurry, has the characteristics of small energy consumption, large treatment capacity and small occupied area, and has simple structure and safe and reliable performance of the whole machine.
The chain main body comprises a cylindrical screen cloth supporting part and a chain wheel meshing part, the highest point of the chain wheel meshing part is lower than that of the screen cloth supporting part, a limiting hole matched with a limiting pin is formed in the screen cloth supporting part, and the outer diameter of the connecting pin shaft is matched with the inner diameter of the screen cloth supporting part. The screen support part is designed into a cylindrical structure, so that the cylindrical screen support part is in line contact with the screen in the operation process, the aperture ratio is greatly improved, and the cylindrical structure is easier to clean and filter; in addition, the chain is connected with the connecting pin shaft through the limiting pin, so that the structure is simple and the installation is convenient.
The drainage system comprises a floating ball, a drainage port matched with the floating ball in shape is arranged under the floating ball, and when the fan sucks, the floating ball seals the drainage port. Through adopting the floater control leakage fluid dram, simple structure, convenient operation.
The exhaust system comprises a primary filter and a secondary filter which are communicated with each other, and the secondary filter is communicated with a suction port of the fan; the first-stage filter is a sheet-shaped staggered filtering structure, and the second-stage filter is a net-shaped filtering structure. The first-stage filter adopts a sheet-shaped staggered filtering structure, separates liquid and large particles in the gas, and can reduce the temperature in the gas; the secondary filter is a net-shaped filter structure and mainly removes most fine particles; through multi-stage filtration, the gas filtration is more comprehensive.
A bottom plate is arranged at the bottom of the main body frame, and a rolling type chain cleaning device for cleaning the bottom plate is arranged below the rolling type chain screening device; at the screening in-process, the screen cloth can carry the material that a small part can't throw off completely and fall to the bottom plate on, cleans the bottom plate through rolling formula chain cleaning device is automatic, need not artifical the sweeping, has improved degree of automation.
The pneumatic excitation device comprises a chain support bar, a fixed plate, a pneumatic vibration exciter and a buffer spring. The buffer spring is arranged between the fixed plate and the chain support bar, and the included angle between the chain support bar and the longitudinal central plane of the main body frame is 5-10 degrees. Through the chain support bar of arranging of slope, at the screening in-process, the chain support bar can scrape the adhesion at the inboard mud of chain, plays certain clean effect to the chain, further improves screening efficiency. The included angle between the chain support bar and the longitudinal central plane of the main body frame is too small, so that the cleaning effect cannot be achieved; the included angle is too large, the resistance is larger, and the power consumption is larger, the included angle is designed to be 5-10 degrees, the resistance is reduced to the minimum while the cleaning effect of the chain is considered, and the influence on the energy consumption of the whole machine can be ignored.
The safety guardrail is arranged at the bottom of the front end of the main body frame, and parts which can be prevented from accidentally falling can be prevented from flowing into the mud pit along with mud.
Drawings
FIG. 1 is a schematic structural view of a solid-liquid-gas separation integral screen for drilling mud according to a first embodiment of the present invention;
FIG. 2 is a schematic view of a portion A of FIG. 1;
FIG. 3 is a schematic structural diagram of a chain according to a first embodiment of the present invention;
FIG. 4 is a schematic illustration of a portion of a solid-liquid-gas separation integral screen for drilling mud in accordance with a first embodiment of the present invention;
fig. 5 is a schematic structural diagram of a rolling type screening excitation system according to a first embodiment of the present invention;
FIG. 6 is a schematic illustration of a drilling fluid screening process according to a first embodiment of the present invention;
FIG. 7 is a schematic structural diagram of a feed chute according to an embodiment of the present invention;
FIG. 8 is a schematic structural view of a solid-liquid-gas separation integral screen for drilling mud in a second embodiment of the present invention.
In the figure, 1, a fan; 2. an exhaust system; 21. a first stage filter; 22. a secondary filter; 3. a feed chute; 31. a feed inlet; 32. an adjusting handle; 33. a feeding adjusting plate; 34. a finger gap adjusting plate; 35. a buffer baffle; 36. a feed chute frame; 4. a pneumatic vibration excitation device; 41. a chain support bar; 42. a pneumatic vibration exciter; 43. a buffer spring; 44. a fixing plate; 5. a main body frame; 6. a rolling chain type screening device; 61. a drive sprocket; 62. a driven sprocket; 63. a tension wheel; 64. a chain; 641. a screen support; 642. a spacing pin; 643. connecting a pin shaft; 644. a sprocket engaging portion; 65. screening a screen; 7. a safety barrier; 8. a rolling chain device; 9. a floating ball; 10. a brush; 11. a nozzle cleaning mechanism; 12. a connecting channel; 121. a channel inlet; 13. a negative pressure slurry collection device; 14. drilling fluid; 15. a base plate.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative only and should not be construed as limiting the invention.
It should be noted that the terms of orientation such as front, back, top, bottom, left, right, inner and outer in the embodiments of the present invention are only relative concepts or reference to the normal use state of the product, and should not be considered as limiting.
The first embodiment is as follows:
as shown in fig. 1, the solid-liquid-gas separation integrated screen for drilling mud comprises a main body frame 5, a fan 1, an exhaust system 2, a liquid discharge system, a feeding groove 3, a pneumatic vibration excitation device 4, a rolling chain type screening device 6 and a rolling type chain cleaning device. The rolling chain type screening device 6, the negative pressure slurry collecting device 13 and the pneumatic vibration excitation device 4 are all arranged inside the main body frame 5, and the pneumatic vibration excitation device 4 is positioned at the top of the negative pressure slurry collecting device 13; fan 1 passes through the fan base to be installed in one side of main body frame 5, and this embodiment is the left side, and the suction opening of fan 1 loops through exhaust system 2 and linking channel 12 and is linked together with negative pressure mud collection device 13, and wherein, the passageway entry of linking channel 12 directly communicates the inner chamber of negative pressure mud collection device 13, and exhaust system 2 and fan 1 arrange in main body frame 5 with one side position, and its below is provided with the flowing back system rather than the intercommunication.
Preferably, the drainage system comprises a floating ball 9, a drainage port matched with the shape of the floating ball 9 is arranged under the floating ball 9, and when the fan 1 sucks air, the floating ball 9 seals the drainage port; when the liquid level reaches a certain height, the floating ball 9 floats to perform liquid drainage treatment; when the floating ball 9 floats to set the height, the limit switch is touched to send an alarm signal to remind an operator to check whether the operation of the integrated sieve is normal, and the operation is safe and reliable. In the present invention, the liquid discharge port may be controlled by a method such as water sealing, and the method of controlling the liquid discharge port is not limited in the present invention.
Preferably, the exhaust system 2 comprises a primary filter 21 and a secondary filter 22 which are in communication, the primary filter 21 being arranged below the secondary filter 22, the secondary filter 22 being in communication with the suction opening of the fan 1; the primary filter 21 is a plate-shaped staggered filter structure, the secondary filter 22 is a mesh filter structure, and preferably, the primary filter 21 is made of aluminum or copper. The first-stage filter adopts a sheet-shaped staggered filtering structure, separates liquid and large particles in the gas, and can reduce the temperature in the gas; the secondary filter is a net-shaped filter structure and mainly removes most fine particles; through multi-stage filtration, the gas filtration is more comprehensive.
As shown in fig. 6, the rolling chain type screening device 6 includes a driving sprocket 61 and a driven sprocket 62, a tension pulley 63, a chain 64, and a screen 65. Preferably, the driving sprocket 61 and the driven sprocket 62 adopt a nylon clamping groove type sprocket structure, so that the structure is simple and the rotation is smoother; the driving sprocket 61 and the driven sprocket 62 are respectively disposed at the front end and the rear end of the main body frame 5, in this embodiment, the driving sprocket 61 is disposed at the front end of the main body frame 5, the driven sprocket 62 is disposed at the rear end of the main body frame 5, the driving sprocket can drive and control the driving sprocket 61 by a conventional technical method such as a motor and a reducer, the chain 64 is sleeved on the driving sprocket 61, the driven sprocket 62 and the tension pulley 63, the screen 65 is mounted on the outer surface of the chain 64 and rolls along with the chain 64, and the negative pressure slurry collecting device 13 is located in a space surrounded by the driving sprocket 61, the driven sprocket 62, the tension pulley 63 and the chain 64; furthermore, the nozzle cleaning mechanisms 11 for back cleaning the chain 64 are respectively arranged at the front end and the rear end in the enclosed space, namely the nozzle cleaning mechanisms 11 are arranged at the inner side of the chain 64, the screen 65 can be adhered or blocked due to high viscosity of slurry in the screening working process, and the high-pressure nozzle cleaning mechanisms 11 are arranged at the front end and the rear end, so that the solid phase in the screen 65 is backflushed through high-pressure air flow, and the screen 65 is always kept in a high-efficiency working state.
Preferably, the screen 65 has a double-layer adhesive type mesh structure, the bottom mesh is a low mesh, the surface mesh is a high mesh, and the support and wear resistance of the high mesh screen are improved. The two sides and the middle of the screen 65 are bonded by glue, and the two ends are sewn with magic tapes or buckle edge seals, so that the screen is convenient to mount and dismount and can be better adjusted in fitting performance.
As shown in fig. 2 and 3, the chain 64 includes a chain body, a limiting pin 642 and a connecting pin 643, and the chain 64 is preferably made of plastic. The chain body comprises a cylindrical screen support part 641 and a sprocket meshing part 644 adapted to sprockets (the sprockets refer to the driving sprocket 61, the driven sprocket 62 and the tension pulley 63), the highest point of the sprocket meshing part 644 is lower than that of the screen support part 641, a limiting hole adapted to a limiting pin 642 is formed in the screen support part 641, the outer diameter of a connecting pin 643 is adapted to the inner diameter of the screen support part 641, the connecting pin 643 is inserted into the screen support part 641 and penetrates through the inside of the screen support part 641 and is fixed through the limiting pin 642, and the connecting pin 643 is preferably made of stainless steel. According to the invention, the screen support part 641 is designed into a cylindrical structure, so that the cylindrical screen support part 641 is in line contact with the screen 65 in the screening operation process, the aperture ratio is greatly improved, the cylindrical structure is easier to clean and filter, the structure is simple, and the installation is convenient.
As shown in fig. 1 and 4, a bottom plate 15 is arranged at the bottom of the main body frame 5, and a rolling type chain cleaning device for cleaning the bottom plate 15 is arranged below the rolling type chain screening device 6; the rolling type chain cleaning device comprises a rolling chain device 8 and at least three brushes 10 connected to the rolling chain device 8, preferably, six brushes 10 are uniformly distributed on the rolling chain device 8, the rolling chain device 8 can adopt a structure of a rolling chain type screening device 6 (without a screen 65) and can also adopt other existing structures, and the specific structure of the rolling chain cleaning device is not limited by the invention; the brush 10 rotates along with the rolling chain device 8 to clean the bottom plate, and brushes off the materials on the bottom plate 15, thereby achieving the cleaning effect.
As shown in fig. 5, the pneumatic excitation device 4 includes a chain support bar 41, a fixing plate 44, a pneumatic exciter 42 and a buffer spring 43; at least two fixing plates 44 are transversely connected to the top of the negative pressure mud collecting device 13, and at least two chain supporting bars 41 are longitudinally connected to two adjacent fixing plates 44; the buffer spring 43 is arranged between the fixing plate 44 and the chain supporting bar 41, and regarding the connection mode of the buffer spring 43, a spring guide rod can be arranged on the fixing plate 44 or/and the chain supporting bar 41, so that the buffer spring 43 is sleeved on the spring guide rod, or other modes in the prior art can be adopted.
Preferably, the angle between the chain support bar 41 and the longitudinal center plane of the main body frame 5 is 5 ° to 10 °. Through the inclined arrangement of the chain supporting bars 41, in the screening process, mud adhered to the inner side of the chain 64 can be scraped off by the chain supporting bars 41, a certain cleaning effect is achieved on the chain 64, and the screening efficiency is further improved. The angle between the chain support bar 41 and the longitudinal center plane of the main body frame 5 is too small to achieve the cleaning effect; the included angle is too large, the resistance is larger, and the power consumption is larger, the included angle is designed to be 5-10 degrees, the resistance is reduced to the minimum while the cleaning effect of the chain is considered, and the influence on the energy consumption of the whole machine can be ignored.
As shown in fig. 7, the feed chute 3 is a finger-strip feed chute, which is composed of a feed inlet 31, an adjusting handle 32, a feed adjusting plate 33, a finger-slot adjusting plate 34, a buffer baffle 35, and a feed chute frame 36. Drilling mud passes through buffer baffle 35 dispersion liquid level, makes the liquid level tiling, and drainage to screening through finger gap regulating plate 34 when arranging outward can make mud tiling in the wire side, handles more convenient by this feed mode.
Example two:
as shown in fig. 8, the present embodiment is different from the first embodiment in that: the safety guardrail 7 is arranged at the bottom of the front end of the main body frame 5, so that parts such as the brush 10 and the like which fall accidentally can be prevented from being fished inconveniently along with mud to a mud pit, and safety accidents are easily caused. This safety barrier 7 sets up to integrative sieve and provides a safety guarantee.
The above is a detailed description of the solid-liquid-gas separation integrated screen for drilling mud provided by the present invention, and a specific example is applied herein to explain the structural principle and the implementation of the present invention, and the above example is only used to help understand the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (10)
1. The utility model provides an integrative sieve of solid-liquid-gas separation for drilling mud, it includes main body frame (5), its characterized in that: a rolling chain type screening device (6), a negative pressure slurry collecting device (13) and a pneumatic vibration excitation device (4) positioned at the top of the negative pressure slurry collecting device (13) are arranged in the main body frame (5);
the rolling chain type screening device (6) comprises a driving chain wheel (61), a driven chain wheel (62), a tension wheel (63), a chain (64) and a screen (65), wherein the driving chain wheel (61) and the driven chain wheel (62) are respectively arranged at two ends of a main body frame (5), the chain (64) is sleeved on the driving chain wheel (61), the driven chain wheel (62) and the tension wheel (63), the screen (65) is arranged on the outer surface of the chain (64) and rolls along with the chain (64), and the negative pressure slurry collecting device (13) is positioned in a space surrounded by the driving chain wheel (61), the driven chain wheel (62), the tension wheel (63) and the chain (64);
a fan (1) is arranged on one side of the main body frame (5), and a suction port of the fan (1) is communicated with the negative pressure slurry collecting device (13) sequentially through the exhaust system (2) and the connecting channel (12).
2. The solid-liquid-gas separation integral screen for drilling mud of claim 1, wherein: the chain (64) is made of plastic and comprises a chain main body, a limiting pin (642) and a connecting pin shaft (643);
the chain body comprises a cylindrical screen support part (641) and a chain wheel meshing part (644), the highest point of the chain wheel meshing part (644) is lower than that of the screen support part (641), a limiting hole matched with a limiting pin (642) is formed in the screen support part (641), and the outer diameter of a connecting pin shaft (643) is matched with the inner diameter of the screen support part (641).
3. The solid-liquid-gas separation integral screen for drilling mud of claim 1, wherein: a liquid discharge system communicated with the exhaust system (2) is arranged below the exhaust system;
the liquid discharge system comprises a floating ball (9), a liquid discharge port matched with the shape of the floating ball (9) is arranged under the floating ball (9), and when the fan (1) sucks, the floating ball (9) seals the liquid discharge port.
4. The solid-liquid-gas separation integral screen for drilling mud of claim 1, wherein: the exhaust system (2) comprises a primary filter (21) and a secondary filter (22) which are communicated, and the secondary filter (22) is communicated with a suction port of the fan (1);
the first-stage filter (21) is of a sheet-shaped staggered filtering structure, and the second-stage filter (22) is of a net-shaped filtering structure.
5. The solid-liquid-gas separation integral screen for drilling mud of claim 1, wherein: a bottom plate (15) is arranged at the bottom of the main body frame (5), and a rolling type chain cleaning device for cleaning the bottom plate (15) is arranged below the rolling type chain screening device (6);
the rolling type chain cleaning device comprises a rolling chain device (8) and brushes (10), wherein at least three brushes (10) are connected to the rolling chain device (8) and roll together with the rolling chain device.
6. The solid-liquid-gas separation integral screen for drilling mud of claim 5, wherein: the number of the hairbrushes (10) is six, and the hairbrushes are uniformly distributed on the rolling chain device (8).
7. The solid-liquid-gas separation integral screen for drilling mud of claim 1, wherein: and the front end and the rear end of the main body frame (5) are provided with nozzle cleaning mechanisms (11), and the nozzle cleaning mechanisms (11) are arranged on the inner side of the chain (64) and used for reversely cleaning the chain (64).
8. The solid-liquid-gas separation integral screen for drilling mud of claim 1, wherein: the pneumatic vibration excitation device (4) comprises a chain support bar (41), a fixing plate (44), a pneumatic vibration exciter (42) and a buffer spring (43);
the number of the fixing plates (44) is at least two, the fixing plates are transversely connected to the top of the negative pressure slurry collecting device (13), and the number of the chain supporting bars (41) is at least two, and the chain supporting bars are longitudinally connected to two adjacent fixing plates (44);
the buffer spring (43) is arranged between the fixing plate (44) and the chain supporting bar (41), and the pneumatic vibration exciter (42) is arranged on the lower plane of the chain supporting bar (41).
9. The solid-liquid-gas separation integral screen for drilling mud of claim 7, wherein: the included angle between the chain support bar (41) and the longitudinal central plane of the main body frame (5) is 5-10 degrees.
10. A solid liquid gas separation integral screen for drilling mud as claimed in any one of claims 1 to 9 wherein: and a safety guardrail (7) is arranged at the bottom of the front end of the main body frame (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011082437.6A CN112122090A (en) | 2020-10-12 | 2020-10-12 | Solid-liquid-gas separation integrated screen for drilling mud |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011082437.6A CN112122090A (en) | 2020-10-12 | 2020-10-12 | Solid-liquid-gas separation integrated screen for drilling mud |
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| CN112122090A true CN112122090A (en) | 2020-12-25 |
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| CN202011082437.6A Pending CN112122090A (en) | 2020-10-12 | 2020-10-12 | Solid-liquid-gas separation integrated screen for drilling mud |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112516661A (en) * | 2021-01-21 | 2021-03-19 | 成都西部石油装备股份有限公司 | Electric high-frequency vibration negative pressure sieve bed |
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