CN105880157B - For the mud vibrating screen screen mesh improved structure of offshore drilling - Google Patents
For the mud vibrating screen screen mesh improved structure of offshore drilling Download PDFInfo
- Publication number
- CN105880157B CN105880157B CN201610415356.0A CN201610415356A CN105880157B CN 105880157 B CN105880157 B CN 105880157B CN 201610415356 A CN201610415356 A CN 201610415356A CN 105880157 B CN105880157 B CN 105880157B
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- Prior art keywords
- moving stop
- drilling fluid
- fixed baffle
- sieve
- sliding block
- Prior art date
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- 238000005553 drilling Methods 0.000 title claims abstract description 148
- 239000012530 fluid Substances 0.000 claims abstract description 133
- 210000003298 dental enamel Anatomy 0.000 claims description 5
- 229920000459 Nitrile rubber Polymers 0.000 claims description 4
- 230000001154 acute effect Effects 0.000 claims description 3
- 239000007791 liquid phase Substances 0.000 abstract description 35
- 239000007790 solid phase Substances 0.000 abstract description 34
- 230000000694 effects Effects 0.000 abstract description 25
- 238000012216 screening Methods 0.000 abstract description 17
- 238000000034 method Methods 0.000 abstract description 14
- 230000008569 process Effects 0.000 abstract description 12
- 239000007788 liquid Substances 0.000 description 10
- 239000007787 solid Substances 0.000 description 10
- 239000002245 particle Substances 0.000 description 6
- 230000000903 blocking effect Effects 0.000 description 5
- 238000000926 separation method Methods 0.000 description 5
- 230000007246 mechanism Effects 0.000 description 4
- 239000012071 phase Substances 0.000 description 4
- 230000004941 influx Effects 0.000 description 3
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- 230000008093 supporting effect Effects 0.000 description 3
- 241001074085 Scophthalmus aquosus Species 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000002633 protecting effect Effects 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000002320 enamel (paints) Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
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- 238000000746 purification Methods 0.000 description 1
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- 239000002893 slag Substances 0.000 description 1
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- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
-
- 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
-
- 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
Landscapes
- Combined Means For Separation Of Solids (AREA)
Abstract
The invention discloses the mud vibrating screen screen mesh improved structures for offshore drilling, including screen frame, sieve, guide rail, guard rail plate and sliding block, screen frame is equipped with several fixed baffles, fixed baffle is towards the spring being equipped on the side of sieve entrance perpendicular to fixed baffle, spring connects cushion pad, moving stop is parallel to fixed baffle, the part setting that moving stop is located on screen frame is parallel to the shaft of screen frame normal direction, the shaft is provided with screw thread on the side of bottom end, shaft bottom end is inserted into through moving stop in the screw hole set on screen frame, the side of moving stop and cushion contact.The present apparatus causes the liquid phase in drilling fluid further to be detached with solid phase; strengthen screening effect; avoid the liquid phase in screening process in drilling fluid also have not enough time to detach with solid phase just with solid phase movement to screened outlet at; cause the loss of recyclable liquid phase; the use cost of drilling fluid is not only reduced, also protects environment.
Description
Technical field
The present invention relates to drilling fluid reclamation fields, and in particular to improves knot for the mud vibrating screen sieve of offshore drilling
Structure.
Background technology
Drilling fluid is the general name of various circulation of fluids used in drilling process, and drilling fluid is also referred to as drilling mud.
In drilling process, drilling fluid can effectively cool down and lubricate drill bit, additionally it is possible to which balancing layer pressure avoids that blowout and well occurs
It gushes, in addition to this, drilling fluid also is able to passing power and coring sampling.According to decentralized medium difference, drilling fluid is broadly divided into water
The gentle base drilling fluid three categories of base drilling fluid, oil base drilling fluid.
In drilling process, drilling fluid enters to bottom by drilling rod, after its effect is completed with drilling well in generate it is useless
Slag is discharged together, since drilling fluid is not only at high price but also meeting welding, so should be recycled to drilling fluid, solid controlling
System is exactly for recycling drilling fluid.Solid controlling system is also called drilling-fluid circulation system and drilling fluid cleaning system.Solid controlling system
System mainly includes the solid control equipments such as drilling fluid vibrating sieve, vacuum degasser, desander, desilter, horizontal spiral centrifuge.These
Solid control equipment realizes purification and recycling to drilling fluid by layering just as a series of different sieve of sizes, function.
Drilling fluid vibrating sieve is for the level-one solid control equipment of circulation of drilling fluid, cleaning system, has oscillation intensity height, sieve
The features such as facet product is big.Drilling fluid vibrating sieve is mainly used for removing bore meal particles larger in drilling fluid, safeguards the property of drilling fluid
Can be equipment most important in solid controlling system with the treatment effect and service life of the solid control equipment after guarantee.
The screening process of drilling fluid vibrating sieve includes liquid phase and crosses in sieve to screen box on sieve from sieve to enter with solid phase
Mouth is moved to the outlet of sieve.When drilling fluid is located at the sieve set on screen box, solid-liquid two-phase begins to separation.Solid-liquid two
It will not mutually be immediately disconnected, the screening mechanism of traditional drilling fluid vibrating sieve is likely to occur solid phase particles and liquid phase also in screening process
Do not have enough time separate just have left sieve, cause the drilling fluid liquid phase that can be recycled lose, not only pollute environment also add brill
Well cost.
Invention content
The shortcomings that technical problems to be solved by the invention are for traditional drilling fluid vibrating sieve screening mechanism, it is therefore intended that
Mud vibrating screen screen mesh improved structure for offshore drilling is provided, traditional drilling fluid vibrating sieve is solved and goes out in screening process
The problem of existing solid phase particles also do not have enough time separating just having left sieve, causing recyclable liquid phase loss in drilling fluid with liquid phase.
The present invention is achieved through the following technical solutions：For the mud vibrating screen screen mesh improved structure of offshore drilling, including
Screen frame is provided with sieve in screen frame, guide rail is provided on screen frame, guide rail extends to drilling fluid from drilling fluid inlet
Exit, is provided with several sliding blocks on guide rail, and fixed baffle, other end peace are equipped with close to one end of drilling fluid outlet on sliding block
Equipped with moving stop, for the longer sides of the contact surface of fixed baffle and sliding block perpendicular to sliding block, the height of fixed baffle is parallel to sliding block
Normal direction, fixed baffle is parallel to moving stop, spring, the spring one is provided between fixed baffle and moving stop
End is vertically fixed on fixed baffle, and the other end is connected with cushion pad, and the cushion pad is contacted with moving stop, moving stop top
Portion sets the shaft for being parallel to slide block method line direction, and screw thread, shaft bottom end are provided on the side of the shaft bottom end
It is inserted into through moving stop in the screw hole to match with the screw thread set on sliding block, further includes guard rail plate, guard rail plate is consolidated
Moving stop is scheduled on towards on the side of drilling fluid inlet, close to shaft, the angle of guard rail plate and moving stop is guard rail plate
Acute angle, guard rail plate are biased to guide rail.In the prior art, the screen box of drilling fluid vibrating sieve and the equal slant setting of sieve, drilling fluid entrance
The height at place is more than the height in exit, when drilling fluid enters from drilling fluid vibrating sieve entrance on sieve, consolidating in drilling fluid
Mutually it is located above sieve, is moved to the exit of sieve from the inlet of sieve, the liquid phase in drilling fluid goes out in solid phase to sieve
During mouth is mobile, gradually detached by effect of vibration with solid phase, and entered in the screen box below sieve across sieve, most
The liquid phase of drilling fluid is collected in screen box exit afterwards and is transferred in the solid control equipment of next stage and is further detached.But
It is that the screening mechanism of traditional drilling fluid vibrating sieve uniquely relies on sieve and sieved, and sieve is arranged in screen frame, screen frame
For the edge at the top of screen box, partly the glutinous solid particle with drilling fluid liquid phase is not being opened also with liquid phase separation in screening process
When just have moved to exit and be collected, the liquid phase that can be recycled in drilling fluid is caused to lose.Due to drilling fluid liquid phase
In not only comprising decentralized medium such as water, further comprise the chemical substances such as inorganic agent, be not only not easy to processing, also pollute the environment,
Also, increase the use cost of drilling fluid.To solve the above-mentioned problems, the present invention proposes shakes for the mud of offshore drilling
Dynamic sieve screen mesh improved structure.The mechanism is provided with guide rail on screen frame, and guide rail is located on two sides that screen frame is mutually parallel,
Guide rail is extended to along screen frame close to the position of drilling fluid vibrating sieve discharge port from close to the position of drilling fluid vibrating sieve feed inlet.
Sliding block is provided on guide rail, sliding block may be locked in any position on guide rail, and the lock-in techniques of the linear guide top shoe are existing
The companies such as technology, MISUMI, NBK can produce can be in the linear guide of guide rail any position lock slider.It is set on sliding block
There are moving stop and fixed baffle, moving stop is parallel to fixed baffle and is located on sliding block close to one end of drilling fluid entrance,
The feed inlet of drilling fluid entrance, that is, drilling fluid vibrating sieve.A part for moving stop and fixed baffle is respectively positioned on sliding block, another
Part is located on sieve, wherein, fixed baffle is fixed on sliding block, and shaft is provided at the top of moving stop, close to shaft bottom end
Side on be provided with screw thread, the activity of shaft bottom end is through moving stop and is inserted into being set on sliding block with screw thread in shaft
In the screw hole to match, moving stop can surround shaft System of Rotating about Fixed Axis, be connected through a screw thread, can be after prolonged use to turning
The components such as axis, moving stop are replaced.Spring is provided between moving stop and fixed baffle, spring is vertically mounted on fixation
The side of baffle is equipped with cushion pad on one end that spring is contacted with moving stop.When drilling fluid flows into sieve from feed inlet
When upper, drilling fluid is impinged upon while effect vibrated on moving stop, and drilling fluid generates moving stop impulse force, mobile
Baffle generates reaction force to drilling fluid, anti-due to liquid phase in drilling fluid and solid phase after reaction force acts are on drilling fluid
The difference of elastic force degree, solid phase rebound distance it is remote compared with the distance that liquid phase rebound, thus further separation drilling fluid in solid phase with
Liquid phase avoids liquid phase from also having not enough time to detach with solid phase just with solid phase movement to screened outlet, causes recyclable drilling fluid
Liquid phase is lost；In addition, a part of liquid phase can be also adhered on moving stop, as effect of vibration slowly slides from moving stop
Enter in screen box on to sieve and eventually by sieve pore, which not only realizes the separation with solid phase, moreover it is possible to play and subtract
Light shock of the drilling fluid to moving stop is played the role of protecting moving stop.Moving stop after the shock by drilling fluid,
System of Rotating about Fixed Axis can be done around shaft, still, one end far from shaft can be comprehensive by the supporting role of spring in rotary course
Getting up, moving stop can move a distance towards fixed baffle, be rebounded later by the support of spring after being hit,
A part of impulse force can be not only shed in this way, impulse force is transferred on cushion pad and spring, and moving stop is avoided frequently to hit
Middle damage, while rebound dynamics of the moving stop to drilling fluid is also increased by spring, further such that the liquid in drilling fluid
It is mutually detached with solid phase, in addition, moving stop avoids the side that part drilling fluid is deposited in moving stop by turning effort.
During use, if moving stop is excessive and intensive, the movement speed of solid phase particles can be greatly reduced, and solid phase particles is caused to exist
It is accumulated on sieve, not only easily blocks and damage sieve, also reduce the treating capacity of drilling fluid vibrating sieve；Gap mistake between baffle
During big and negligible amounts, the effect that moving stop plays is limited, and expected solid-liquid two-phase secondary separation effect, mobile gear is not achieved
The separative efficiency of plate reduces.To solve the above-mentioned problems, the present apparatus passes through the sliding block that sets the linear guide He match so that behaviour
Position of the moving stop on guide rail can be adjusted according to field conditions such as the viscosity, inlet amount, charging rate of drilling fluid by making personnel
It puts, changes the distance between each moving stop, moreover it is possible to the number of moving stop needed for adjusting, when needing to increase or decrease mobile gear
During plate number according to demand more flexiblely, it is only necessary to install or unload sliding block, operating personnel can use moving stop
The solid-liquid two-phase of drilling fluid is sieved, further improves the separative efficiency of moving stop.It has also been found that, passed in practice process
The screen of vibration screen for well drill liquid of system is due to being not added with moving stop, the influence of drilling fluid only effect vibrated, drilling fluid from into
After material mouth is entered on sieve, feed inlet is normally at the center of sieve, so the amount of drilling fluid is as drilling fluid is from sieve
It is unfolded to sieve both sides and gradually decreases in the central axes of net.However the present apparatus is increasing moving stop, fixed baffle, guide rail, cunning
After the parts such as block, after drilling fluid is impinged upon on moving stop, part drilling fluid can splash direction guiding rail, after a period of use, glue
The drilling fluid being attached on guide rail can be so that movement of the sliding block on guide rail be restricted, and movement is very difficult, is not easy to remove cunning
Block so that the effect of guide rail and sliding block reduces.In order to solve the problems, such as this, the present apparatus is added to guard rail plate on moving stop, shield
Rail plate is positioned close to one end of shaft and is biased to guide rail direction.Since the drilling fluid itself at screen periphery is less, institute
The drilling fluid to be prevented is mainly the drilling fluid that direction guiding rail is splashed after being hit with moving stop, so need not be in guide rail close to sieve
Side is installed by entire splash board, it is only necessary to which a guard rail plate is installed on moving stop to be solved the problems, such as.When drilling fluid is hit
After moving stop, the drilling fluid for splashing direction guiding rail is impinged upon on guard rail plate, and drilling fluid is avoided to splash to guide rail, influences sliding block on guide rail
Movement so that sliding block and guide rail energy normal use.The present apparatus causes the liquid phase in drilling fluid further to be detached with solid phase, strengthens
Screening effect, avoids in screening process, when the influx of especially drilling fluid increases suddenly, liquid phase in drilling fluid
Also have not enough time to detach with solid phase just with solid phase movement to screened outlet at, cause the loss of recyclable liquid phase, not only reduce
The use cost of drilling fluid, also protects environment.
Further, the length of moving stop is 1.5 to 2 times of fixed baffle length.In the present apparatus, moving stop plays
The effect of solid phase and liquid phase in drilling fluid is further detached, installation spring plays resilient support to moving stop on fixed baffle
Effect.It is found by practice, if the length of moving stop is less than 1.5 times of fixed baffle length, moving stop and drilling fluid
Contact area it is too small, inferior separating effect, part drilling fluid can also be deposited in the side of fixed baffle；If the length of moving stop
Degree is more than 2 times of fixed baffle length, since moving stop by spring supporting effect is located proximate to shaft so that mobile to keep off
The rotational steps of plate are excessive, can not return to original position blocking drilling fluid in time after part impulse force is shed, and blocking effect is poor.
Further, the length of moving stop is the 1/4 to 1/3 of mesh widths.The width of sieve refers to perpendicular to guide rail
The length of side on place side, when the length of moving stop is less than a quarter of mesh widths, due in the more segment set of drilling fluid
At middle part, so the screening effect of moving stop is poor, when the length of moving stop is more than 1/3rd of mesh widths, meeting
Lead to the Deal With Drilling Fluid amount of drilling fluid vibrating sieve to reduce, solid phase is resulted even in when serious and is deposited on sieve, damage sieve.
Further, moving stop surface is coated with synthetic enamel.Synthetic enamel is mainly used for the protection of metal surface, due to
Moving stop can be frequently by the shock in drilling fluid, and the solid phase of drilling fluid can generate scraping to its surface, reduce moving stop
Service life, synthetic enamel can play a protective role to the surface of moving stop, extend its service life.In practice, mainly make
With C53-31 antirust enamel paint, which has good adhesive force and flexibility, moving stop surface can be played good
Protecting effect.
Further, spring is located at one end on sieve close to fixed baffle.Spring is arranged on fixed baffle and is located at sieve
On one end the rotation angle of moving stop can be avoided excessive, blocking effect is caused to reduce.
Further, cushion pad is made of nitrile rubber.Nitrile rubber not only has cushioning effect, can shed moving stop
On part impulse force, also with certain intensity and frictional behaviour so that spring will not be by during moving stop is supported
Relative movement occurs between moving stop and support effect is caused to be deteriorated, makes moving stop that can not be restored to original position.
Compared with prior art, the present invention it has the following advantages and advantages：
1st, the present invention is on the basis of the effect of vibration of traditional screen of vibration screen for well drill liquid, by increasing moving stop so that
Liquid phase in drilling fluid is further detached with solid phase, strengthen screening effect, avoid in screening process, especially drilling fluid
When influx increases suddenly, the liquid phase in drilling fluid also has not enough time to detach with solid phase just as solid phase movement to sieve goes out
At mouthful, the loss of recyclable liquid phase is caused, the use cost of drilling fluid is not only reduced, also protects environment；
2nd, the present invention is provided with fixed baffle, spring and cushion pad so that moving stop, can be towards fixation after being hit
Baffle moves a distance, is rebounded later by the support of spring, can not only shed a part of impulse force in this way, and impulse force is turned
It moves on cushion pad and spring, moving stop is avoided to be damaged, while also increase moving stop by spring in frequent hit
To the rebound dynamics of drilling fluid, further such that the liquid phase in drilling fluid is detached with solid phase, in addition, moving stop is made by rotating
With the side for avoiding part drilling fluid and being deposited in moving stop；
3rd, the sliding block of the invention by setting the linear guide and matching so that operating personnel can be according to the viscous of drilling fluid
The field conditions such as degree, inlet amount, charging rate adjust position and number of the moving stop on guide rail, and operating personnel being capable of basis
Demand more flexiblely sieves the solid-liquid two-phase of drilling fluid with moving stop, further improves the separation of moving stop
Efficiency；
4th, the present invention is added to guard rail plate on moving stop, after drilling fluid hits moving stop, splashes the brill of direction guiding rail
Well liquid is impinged upon on guard rail plate, and drilling fluid is avoided to splash to guide rail, influences movement of the sliding block on guide rail so that sliding block and guide rail energy
Normal use；
5th, the present invention is had found when the length of moving stop is 1.5 to 2 times of fixed baffle length by practical application,
The screening effect of moving stop is best, if the length of moving stop is less than 1.5 times of fixed baffle length, moving stop is with boring
The contact area of well liquid is too small, inferior separating effect, and part drilling fluid can also be deposited in the side of fixed baffle；If moving stop
Length be more than 2 times of fixed baffle length, since moving stop by spring supporting effect is located proximate to shaft so that shifting
The rotational steps of dynamic baffle are excessive, can not return to original position blocking drilling fluid, blocking effect in time after part impulse force is shed
Difference.
Description of the drawings
Attached drawing described herein is used for providing further understanding the embodiment of the present invention, forms one of the application
Point, do not form the restriction to the embodiment of the present invention.In the accompanying drawings：
Fig. 1 is schematic structural view of the invention.
Label and corresponding parts title in attached drawing：
1- screen frames, 2- sieves, 3- shafts, 4- fixed baffles, 5- cushion pads, 6- springs, 7- moving stops, 8- sliding blocks,
9- guide rails, 10- guard rail plates.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, with reference to embodiment and attached drawing, to this
Invention is described in further detail, and exemplary embodiment of the invention and its explanation are only used for explaining the present invention, do not make
For limitation of the invention.
Embodiment
As shown in Figure 1, the present invention is the mud vibrating screen screen mesh improved structure for offshore drilling, including screen frame 1, sieve
Sieve 2 is provided in screen frame 1, guide rail 9 is provided on screen frame 1, guide rail 9 extends to the outlet of drilling fluid from drilling fluid inlet
Place, is provided with several sliding blocks 8 on guide rail 9, and fixed baffle 4, other end peace are equipped with close to one end of drilling fluid outlet on sliding block 8
Equipped with moving stop 7, the longer sides of the contact surface of the fixed baffle 4 and sliding block 8 are perpendicular to sliding block 8, the Gao Ping of fixed baffle 4
For row in the normal direction of sliding block 8, fixed baffle 4 is parallel to moving stop 7, and bullet is provided between fixed baffle 4 and moving stop 7
Spring 6,6 one end of spring are vertically fixed on fixed baffle 4, and the other end is connected with cushion pad 5, and cushion pad 5 connects with moving stop 7
It touches, 7 top setting of moving stop is parallel to the shaft 3 of 8 normal direction of sliding block, is set on the side of 3 bottom end of shaft
Screw thread is equipped with, 3 bottom end of shaft is inserted into the screw hole to match with screw thread set on sliding block 8 through moving stop 7, further includes
Guard rail plate 10, guard rail plate 10 are fixed on moving stop 7 towards on the side of drilling fluid inlet, and guard rail plate 10 is close to shaft 3, shield
The angle of rail plate 10 and moving stop 7 is acute angle, and guard rail plate 10 is biased to guide rail 9.The length of moving stop 7 is grown for fixed baffle 4
1.5 to 2 times of degree.The length of moving stop 7 is the 1/4 to 1/3 of 2 width of sieve.7 surface of moving stop is coated with synthetic enamel.
Spring 6 is located at one end on sieve 2 close to fixed baffle 4.Cushion pad 5 is made of nitrile rubber.When drilling fluid is from 2 entrance of sieve
During inflow, drilling fluid is impinged upon while effect vibrated on moving stop 7, and moving stop 7 is by the anti-of drilling fluid
Active force further detaches solid phase and liquid phase in drilling fluid, and liquid phase is avoided also to have not enough time to detach with solid phase just as solid phase is moved
It moves to screened outlet, recyclable drilling fluid liquid phase is caused to lose；Moving stop 7 can move after being hit towards fixed baffle
Dynamic a distance, is rebounded by the support of spring 6, can not only shed a part of impulse force in this way, impulse force is transferred to later
On cushion pad 5 and spring 6, moving stop 7 is avoided to be damaged, while also increase moving stop 7 by spring 6 in frequent hit
To the rebound dynamics of drilling fluid, further such that the liquid phase in drilling fluid is detached with solid phase, moving stop 7 also passes through turning effort
Avoid the side that part drilling fluid is deposited in moving stop 7.Part drilling fluid can splash direction guiding rail 9 after moving stop 7 is hit,
Guard rail plate 10 on moving stop 7 can prevent drilling fluid from splashing direction guiding rail 9, prevent drilling fluid from adhering on the rail 9, do
Disturb the movement of sliding block 8 on the rail 9.Operating personnel can be by increasing or decreasing the quantity of sliding block 8, adjusting sliding block 8 in guide rail 9
On position, more flexiblely according to the field conditions such as the viscosity of drilling fluid, inlet amount, charging rate adjust moving stop 7 exist
Position on guide rail 9 changes the distance between each moving stop 7 and number, further improves the separative efficiency of moving stop 7.
The present apparatus causes the liquid phase in drilling fluid further to be detached with solid phase, strengthens screening effect, avoids in screening process, especially
When being that the influx of drilling fluid increases suddenly, the liquid phase in drilling fluid also has not enough time to detach with solid phase just as solid phase is moved
The loss for 2 exit of sieve, causing recyclable liquid phase is moved, the use cost of drilling fluid is not only reduced, also protects environment.
Above-described specific embodiment has carried out the purpose of the present invention, technical solution and advantageous effect further
It is described in detail, it should be understood that the foregoing is merely the specific embodiment of the present invention, is not intended to limit the present invention
Protection domain, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should all include
Within protection scope of the present invention.
Claims (3)
1. for the mud vibrating screen screen mesh improved structure of offshore drilling, including screen frame (1), set in the screen frame (1)
There is sieve (2), which is characterized in that guide rail (9) is provided on screen frame (1), the guide rail (9) extends to from drilling fluid inlet
The exit of drilling fluid is provided with several sliding blocks (8) on guide rail (9), pacifies on the sliding block (8) close to one end of drilling fluid outlet
Equipped with fixed baffle (4), the other end is equipped with moving stop (7), the fixed baffle (4) and the contact surface of sliding block (8) compared with
Long side is parallel to the normal direction of sliding block (8) perpendicular to sliding block (8), the height of fixed baffle (4), and fixed baffle (4) is parallel to shifting
Dynamic baffle (7), is provided with spring (6), described spring (6) one end is vertically fixed between fixed baffle (4) and moving stop (7)
On fixed baffle (4), the other end is connected with cushion pad (5), and the cushion pad (5) contacts with moving stop (7), moving stop
(7) top setting is parallel to the shaft (3) of sliding block (8) normal direction, is provided on the side of the shaft (3) bottom end
Screw thread, shaft (3) bottom end are inserted into through moving stop (7) in the screw hole to match with the screw thread set on sliding block (8),
Further include guard rail plate (10), the guard rail plate (10) is fixed on moving stop (7) towards on the side of drilling fluid inlet, guard rail
The angle of the close shaft (3) of plate (10), guard rail plate (10) and moving stop (7) is acute angle, and guard rail plate (10) is biased to guide rail (9)；
Moving stop (7) surface is coated with synthetic enamel；The spring (6) close to fixed baffle (4) on sieve (2) one
End；The cushion pad (5) is made of nitrile rubber.
2. the mud vibrating screen screen mesh improved structure according to claim 1 for offshore drilling, which is characterized in that described
The length of moving stop (7) is 1.5 to 2 times of fixed baffle (4) length.
3. the mud vibrating screen screen mesh improved structure according to claim 1 for offshore drilling, which is characterized in that described
The length of moving stop (7) is the 1/4 to 1/3 of sieve (2) width.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610415356.0A CN105880157B (en) | 2016-06-15 | 2016-06-15 | For the mud vibrating screen screen mesh improved structure of offshore drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610415356.0A CN105880157B (en) | 2016-06-15 | 2016-06-15 | For the mud vibrating screen screen mesh improved structure of offshore drilling |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105880157A CN105880157A (en) | 2016-08-24 |
| CN105880157B true CN105880157B (en) | 2018-06-12 |
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| CN201610415356.0A Expired - Fee Related CN105880157B (en) | 2016-06-15 | 2016-06-15 | For the mud vibrating screen screen mesh improved structure of offshore drilling |
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| CN108212751B (en) * | 2017-12-27 | 2019-12-31 | 广东省怡合建设有限公司 | Raw materials screening installation is used in municipal works construction |
| CN116752917B (en) * | 2023-08-17 | 2023-12-19 | 河南中正石油起重机械有限公司 | Negative pressure shale shaker for well drilling |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101878072A (en) * | 2007-10-08 | 2010-11-03 | M-I有限公司 | The fluid that is used for vibratory sieve distributes |
| CN203061424U (en) * | 2012-12-06 | 2013-07-17 | 安徽省宁国市宁武耐磨材料厂 | Push-and-pull sieve for cleaning impurities on wear-resisting ball surface |
| WO2014065670A1 (en) * | 2012-10-23 | 2014-05-01 | Optipro As | Shale shaker with a filter pack adapter |
| CN203664179U (en) * | 2013-11-29 | 2014-06-25 | 什邡市金孚工贸有限公司 | Separating screen used for foundry casting production |
| CN204933963U (en) * | 2015-08-03 | 2016-01-06 | 砀山县圣轩建材有限公司 | A kind of fragment of brick material screening device |
| CN205816183U (en) * | 2016-06-15 | 2016-12-21 | 成都来宝石油设备有限公司 | A kind of improved structure for oil drilling slurry vibrating screen mesh |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8556083B2 (en) * | 2008-10-10 | 2013-10-15 | National Oilwell Varco L.P. | Shale shakers with selective series/parallel flow path conversion |
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2016
- 2016-06-15 CN CN201610415356.0A patent/CN105880157B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101878072A (en) * | 2007-10-08 | 2010-11-03 | M-I有限公司 | The fluid that is used for vibratory sieve distributes |
| WO2014065670A1 (en) * | 2012-10-23 | 2014-05-01 | Optipro As | Shale shaker with a filter pack adapter |
| CN203061424U (en) * | 2012-12-06 | 2013-07-17 | 安徽省宁国市宁武耐磨材料厂 | Push-and-pull sieve for cleaning impurities on wear-resisting ball surface |
| CN203664179U (en) * | 2013-11-29 | 2014-06-25 | 什邡市金孚工贸有限公司 | Separating screen used for foundry casting production |
| CN204933963U (en) * | 2015-08-03 | 2016-01-06 | 砀山县圣轩建材有限公司 | A kind of fragment of brick material screening device |
| CN205816183U (en) * | 2016-06-15 | 2016-12-21 | 成都来宝石油设备有限公司 | A kind of improved structure for oil drilling slurry vibrating screen mesh |
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| CN105880157A (en) | 2016-08-24 |
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