Drilling fluid screening equipment for petroleum drilling engineering

Abstract

The utility model provides drilling fluid screening equipment for petroleum drilling engineering, which relates to the technical field of drilling fluid screening and comprises a screening frame and a screen plate arranged in the screening frame, a sliding frame sliding along the length direction of the screen plate is arranged on the outer side edge of the screening frame, and a scraper blade in the sliding frame rotates to select whether to be in contact with the upper surface of the screen plate or not. Then the sliding frame drives the scraping plate to move to the position with a certain distance away from the dewatering tank, the scraping plate rotates to make contact with the surface of the screening plate, the sliding frame drives the scraping plate to move, mud enters the dewatering tank, under the blocking effect of the scraping plate, part of mud is located below the pressing plate, and the pressing plate descends in the mode of being attached to the surface of the scraping plate; according to the scheme, the slurry on the sieve plate is cleaned section by section according to the mode that the distance between the sieve plate and the dewatering tank is from near to far, in addition, the used sieve plate is of a rigid structure and cannot be bent due to the resistance of the slurry, and in the descending process of the pressing plate, the slurry on the surface of the scraping plate can be scraped away.

Description

TECHNICAL FIELD

[0001] The utility model relates to drilling fluid screening technical field especially relates to a kind of petroleum drilling engineering drilling fluid screening equipment. BACKGROUND

[0002] Drilling fluid screening can effectively separate the solid particles in drilling fluid, avoid these particles from causing wear to the drill bit when drilling fluid circulates, thereby prolonging the service life of the drill bit, reducing the frequency of replacing the drill bit, making the drilling process more smooth, and significantly improving drilling efficiency.

[0003] Therefore, one kind of petroleum drilling engineering drilling fluid screening equipment of prior art, public number is: CN220026238U, when using, pour drilling fluid into screen box, and fall on screen cloth to carry out screening, by setting adjustment structure, when needing to clean the mud on the surface of screen cloth and screen hole, first rotate rotating lever to drive screw rod, so that screw rod is separated from sliding rod, at this time, cleaning brush will be driven to the reverse movement of screen cloth under the drive of spring, with screw rod drive and its screw thread connection link plate, link plate drives cleaning brush, i.e. can clean the mud on screen cloth, when cleaning is completed, again move sliding rod to drive cleaning brush and separate from screen cloth, when cleaning brush moves to appropriate position, again rotate rotating lever to drive screw rod, so that screw rod is abutted with sliding rod, to fix cleaning brush, by setting adjustment structure, after screening equipment is used, personnel can conveniently adjust cleaning brush to clean the mud attached to the surface of screen cloth and screen hole.

[0004] However, when cleaning brush moves on the surface of screen cloth to clean the mud filtered out, mud will accumulate on the surface of cleaning brush, and as the thickness of accumulated mud increases, the resistance generated on the surface of cleaning brush will also increase, so that the bristles of cleaning brush are prone to distortion, and the mud liquid permeated into cleaning brush is inconvenient to clean. UTILITY MODEL CONTENTS

[0005] The utility model aims at solving the problems in prior art and provides a kind of petroleum drilling engineering drilling fluid screening equipment.

[0006] To achieve the above object, the utility model adopts the following technical scheme: a kind of petroleum drilling engineering drilling fluid screening equipment, including screen frame and the screen frame inside setting screen plate, the screen frame outer side is provided with the sliding frame sliding along screen plate length direction, the sliding frame is rotatably connected with the scraper for scraping the mud on the surface of screen plate, the screen plate one side wide edge is fixedly installed with the filter plate with screen frame inner wall fixed installation between the screen frame and the screen plate side far from screen plate, dehydration groove is formed between the filter plate and the screen frame inner wall, the screen frame upper installation is slidably connected with the compression plate of dehydration groove four around groove wall, and the screen frame outer side is fixedly installed with the electric telescopic rod for pushing the compression plate to lift.

[0007] Preferably, the dehydration tank bottom is hinged with a rotating plate.

[0008] Preferably, the two long sides of the screen frame are fixedly provided with first linear lead screw modules at the same height, and the sliding seat portions of the two first linear lead screw modules are fixed to the surface of the sliding frame.

[0009] Preferably, one long side of the screen frame is fixedly provided with a second linear lead screw module below the first linear lead screw module, and the sliding seat portion of the second linear lead screw module is fixedly provided with a feeding pipe above the sliding frame and sliding along the length direction of the screen surface.

[0010] Preferably, the back side of the scraper opposite to the pressing plate is fixedly provided with a dust suction shell for sucking the mud in the screen holes of the screen surface, and a dust collector is fixedly provided at the other long side of the screen frame, and the dust collector is used in cooperation with the dust suction shell.

[0011] Preferably, the air inlet of the dust collector is communicated with the inside of the dust suction shell through a hose, and the air outlet of the dust collector is also connected with a switch valve through a hose.

[0012] Preferably, the port of the switch valve is fixedly connected with the upper surface of the pressing plate.

[0013] Compared with the prior art, the advantages and positive effects of the utility model are that,

[0014] 1. In the utility model, the scraper in the sliding frame is rotated to select whether to contact the upper surface of the screen, then the sliding frame drives the scraper to move to a distance from the dehydration tank, the scraper is rotated to contact the surface of the screen, the sliding frame drives the scraper to move, the mud enters the dehydration tank, and under the blocking action of the scraper, part of the mud is located below the pressing plate, finally the pressing plate descends along the surface of the scraper, the mud below the pressing plate is squeezed and dehydrated, the mud on the screen is cleaned in sections from near to far from the dehydration tank, the screen is of rigid structure and will not bend due to the resistance of the mud, and the mud on the surface of the scraper can be scraped off during the descending process of the pressing plate.

[0015] 2. In the utility model, after the mud on the surface of the screen is cleaned in sections, the sliding frame drives the dust suction shell to move on the surface of the screen, under the suction action of the dust collector, the residual mud in the screen holes of the screen surface covered by the dust suction shell is sucked out and enters the dehydration tank through the dust collector and the opened switch valve for collection and waiting for squeezing and dehydration, so that the screen can be deeply cleaned. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 A three-dimensional structure schematic diagram of a petroleum drilling engineering drilling fluid screening device is provided for the utility model;

[0017] Figure 2 The utility model provides a kind of petroleum drilling engineering drilling fluid screening equipment Figure 1 The rear view structure schematic view of

[0018] Figure 3 The utility model provides a kind of petroleum drilling engineering drilling fluid screening equipment Figure 2 The sectional structure schematic view of

[0019] Figure 4 The utility model provides a kind of petroleum drilling engineering drilling fluid screening equipment screening frame bottom surface structure schematic view.

[0020] Legend: 1, screening frame;2, pressing plate;3, electric telescopic rod;4, screen plate;5, scraper;6, sliding frame;7, feeding pipe;8, first linear lead screw module;9, dust collector;10, switch valve;11, second linear lead screw module;12, dust collection shell;13, dehydration tank;14, filter plate;15, rotating plate. Specific embodiments

[0021] In order to more clearly understand the above-mentioned purposes, features and advantages of the utility model, the utility model is further described below in conjunction with the drawings and examples. It should be noted that the embodiments of the present application and the features in the examples can be combined with each other without conflict.

[0022] In the following description, many specific details are set forth in order to provide a thorough understanding of the present utility model, however, the present utility model can also be implemented in other ways different from those described herein, therefore, the present utility model is not limited to the specific embodiments disclosed in the following specification.

[0023] As Figures 1-4As shown, a kind of petroleum drilling engineering drilling fluid screening equipment, including screen 1 and the screen plate 4 arranged in screen 1, the outside edge of screen 1 is provided with the sliding frame 6 sliding along the length direction of screen 4, the first linear lead screw module 8 is fixedly installed in the equal height position of the two long sides of screen 1, the sliding seat part in two first linear lead screw modules 8 is fixed with the surface of sliding frame 6, and the sliding frame 6 is moved along the length direction of screen 4 by using the operation of two first linear lead screw modules 8;Sliding frame 6 is rotatably connected with the scraper 5 for scraping the mud on the surface of screen 4, in actual use, the scraper 5 is rotated by the mode of installing servo motor on sliding frame 6, whether the scraper 5 is in contact with the surface of screen 4 is convenient for personnel control;The wide side of one side of screen 4 is fixedly installed with the filter plate 14 fixedly installed with the inner wall of screen 1 in the clearance with the end of screen 1, and the dehydration tank 13 is formed between the filter plate 14 and the side of the inner wall of screen 1 away from screen 4, and the turning plate 15 is hinged on the tank bottom of dehydration tank 13;The pressing plate 2 is installed on the upper portion of screen 1 and is slidably connected with the tank wall of dehydration tank 13, and the electric telescopic rod 3 is fixedly installed on the outside edge of screen 1 and is used to push the pressing plate 2 to lift, according to the thickness of the mud on the surface of screen 4, the scraper 5 is moved to a certain distance close to dehydration tank 13 without being in contact with the upper surface of screen 4, then the scraper 5 is rotated to be in contact with the surface of screen 4, the mud between the scraper 5 and dehydration tank 13 is moved to dehydration tank 13 by sliding frame 6, and under the blocking action of scraper 5, part of the mud is located below the pressing plate 2, finally, the pressing plate 2 is lowered along the surface of scraper 5 by the elongation of electric telescopic rod 3, so that the mud below the pressing plate 2 is squeezed and dehydrated, and the water squeezed out in the squeezing process enters the lower portion of screen 4 along the surface of filter plate 14 and is discharged, that is, the mud on screen 4 is cleaned in the mode of gradually from near to far from dehydration tank 13, and the screen 4 used is of rigid structure and will not bend due to mud resistance, and the mud on the surface of scraper 5 can be scraped during the lowering process of pressing plate 2, and the mud block formed by dehydration in dehydration tank 13 can be taken out by rotating and opening turning plate 15.

[0024] In addition: one of the long edges of screen 1 is fixedly installed with the second linear lead screw module 11 below the first linear lead screw module 8, the sliding seat part of second linear lead screw module 11 is fixedly installed with the feeding pipe 7 above sliding frame 6 and sliding along the length direction of screen 4, the feeding pipe 7 is used in cooperation with pump body, drilling fluid is extracted to the feeding pipe 7 by pump body and is sprayed and falls down, and the feeding pipe 7 is moved by second linear lead screw module 11, so that drilling fluid can be uniformly spread on the surface of screen 4, and the filtering speed of drilling fluid is accelerated.

[0025] Furthermore, the scraping plate 5 is fixedly installed with a dust suction shell 12 on the side away from the pressing plate 2, and a dust collector 9 is fixedly installed on the other side of the screen removing frame 1; the dust collector 9 is used in cooperation with the dust suction shell 12; the air inlet of the dust collector 9 is connected with the inside of the dust suction shell 12 through a hose, and the air outlet of the dust collector 9 is also connected with a switch valve 10 through a hose; the switch valve 10 is fixedly connected with the upper surface of the pressing plate 2; after the mud on the surface of the screen plate 4 is cleaned in sections, the dust suction shell 12 is moved on the surface of the screen plate 4 by the sliding frame 6; under the suction of the dust collector 9, the residual mud in the screen holes on the surface of the screen plate 4 covered by the dust suction shell 12 is sucked out and enters the dehydration tank 13 through the dust collector 9 and the opened switch valve 10.

[0026] The working principle is that the second linear lead screw module 11 drives the feeding pipe 7 to move, so that the drilling fluid can be uniformly spread on the surface of the screen plate 4 and the filtering speed of the drilling fluid is accelerated; the sliding frame 6 drives the scraping plate 5 to move by the two first linear lead screw modules 8, and the mud on the screen plate 4 is scraped to the dehydration tank 13 in sections by the rotation of the scraping plate 5; after the dehydration tank 13 is filled with mud, the scraping plate 5 moves to the side and abuts against the surface of the pressing plate 2; the pressing plate 2 is lowered to press the mud below by the extension of the electric telescopic rod 3; and the mud block formed after dehydration is taken out by the rotation of the rotating plate 15.

[0027] The wiring diagram of the electric telescopic rod 3, the first linear lead screw module 8, the dust collector 9, the switch valve 10, the servo motor and the second linear lead screw module 11 in the utility model is public knowledge in the field, and the working principle is a known technology; the type is selected according to actual use; therefore, the control mode and wiring arrangement of the electric telescopic rod 3, the first linear lead screw module 8, the dust collector 9, the switch valve 10, the servo motor and the second linear lead screw module 11 are not explained in detail.

[0028] The above is only a preferred embodiment of the utility model, and is not intended to limit the utility model in other forms; any skilled person in the art can change or modify the above disclosed technology content into equivalent embodiments applied to other fields, but any simple modification, equivalent change and modification made according to the technical essence of the utility model to the above embodiments still belong to the protection scope of the utility model technical scheme.

Claims

1. A petroleum drilling engineering drilling fluid screening device, comprising a screening frame (1) and a screen plate (4) arranged in the screening frame (1), characterized in that: The screen frame (1) is provided with a sliding frame (6) sliding along the length direction of the screen plate (4) on the outer side edge, the sliding frame (6) is rotatably connected with a scraper (5) for scraping the surface of the screen plate (4), the screen plate (4) is fixedly installed on the wide edge of one side and the gap between the end of the screen frame (1), and the filter plate (14) is fixedly installed on the inner wall of the screen frame (1), the filter plate (14) and the side of the screen frame (1) away from the screen plate (4) form a dehydration tank (13), the screen frame (1) is provided with a pressing plate (2) slidingly connected with the tank wall of the dehydration tank (13) on the upper side, and the screen frame (1) is fixedly installed with an electric telescopic rod (3) for pushing the pressing plate (2) to rise and fall.

2. The oil drilling engineering drilling fluid screening apparatus of claim 1, wherein: The dehydration tank (13) is hingedly connected with a rotating plate (15) on the bottom.

3. The oil drilling engineering drilling fluid screening apparatus of claim 1, wherein: The screen frame (1) is fixedly installed with a first linear lead screw module (8) at the same height position on the two long edges, and the sliding seat part of the two first linear lead screw modules (8) is fixed on the surface of the sliding frame (6).

4. The oil drilling engineering drilling fluid screening apparatus of claim 1, wherein: The screen frame (1) is fixedly installed with a second linear lead screw module (11) below the first linear lead screw module (8) at one of the long edges, and the sliding seat part of the second linear lead screw module (11) is fixedly installed with a feeding pipe (7) above the sliding frame (6) and sliding along the length direction of the surface of the screen plate (4).

5. The oil drilling engineering drilling fluid screening apparatus of claim 1, wherein: The back of the scraper (5) is fixedly installed with a dust suction shell (12) for sucking the mud in the screen hole of the screen plate (4), and the dust collector (9) is fixedly installed at the position of the other long edge of the screen frame (1), and the dust collector (9) is used in cooperation with the dust suction shell (12).

6. The oil drilling engineering drilling fluid screening apparatus of claim 5, wherein: The air inlet of the dust collector (9) is connected with the inside of the dust suction shell (12) through a hose, and the air outlet of the dust collector (9) is also connected with a switch valve (10) through a hose.

7. The oil drilling engineering drilling fluid screening apparatus of claim 6, wherein: The port of the switch valve (10) is fixedly connected with the upper surface of the pressing plate (2).

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