CN210948548U

CN210948548U - Drilling fluid screening installation

Info

Publication number: CN210948548U
Application number: CN201921952362.5U
Authority: CN
Inventors: 汤伟; 汤明全
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-11-13
Filing date: 2019-11-13
Publication date: 2020-07-07
Anticipated expiration: 2029-11-13

Abstract

The utility model relates to drilling fluid screening equipment, which comprises a screening main tank and a screening auxiliary tank, wherein a tank cover is arranged at the top center of the screening main tank, an outlet is arranged at the bottom center of the screening main tank, an annular groove is arranged at the center of the inner wall of the screening main tank, a spring is fixed at the bottom center of the annular groove, a through hole is arranged on the inner wall of the screening main tank, a baffle is fixed at the position of the inner wall of the screening main tank close to the edge of the through hole, an annular frame is connected with the inner wall of the annular groove in a sliding way, the bottom end of the annular frame is fixedly connected with the top end of the spring, a main filter plate is fixed in the annular frame, an upper baffle plate and a lower baffle plate are fixed at the top end and the bottom end of the annular frame, an opening is arranged at the bottom center of the screening auxiliary tank, an auxiliary filter plate, the edge positions of four corners of the sealing plate are provided with fixing holes, and the side surfaces of the screening auxiliary boxes are provided with fixing holes in a matching manner.

Description

Drilling fluid screening installation

Technical Field

The utility model relates to a drilling fluid screening technical field, concretely relates to drilling fluid screening installation.

Background

The drilling fluid is a general term for various circulating fluids which meet the requirements of drilling work by multiple functions in the drilling process. The drilling fluid is the blood of the well, also called drilling flushing fluid. The drilling fluid can be divided into clear water, slurry, clay-phase-free flushing fluid, emulsion, foam, compressed air and the like according to the composition. The clean water is the earliest drilling fluid, does not need to be treated, is convenient to use and is suitable for regions with complete rock stratums and sufficient water sources. The mud is widely used drilling fluid and is mainly suitable for unstable rock formations of hole walls, such as loose rock formations, fracture development, easy collapse and block falling, water swelling and peeling, and the like. After the drilling fluid is used, impurities need to be removed through screening, and then the drilling fluid is recycled. However, most of the existing drilling fluid screening devices adopt a vibrating screen to eject solid impurities, but the vibration type filtering means often causes the loosening of device components, reduces the service life of the device, and generates great noise pollution during working.

At present, a Chinese patent with the application number of CN201720853498.5 discloses a petroleum drilling fluid screening device; comprises a screening and filtering device, a primary impurity removal device and a secondary impurity removal device; the hinge is hinged with a second filter plate; an oil outlet branch pipe is arranged in the bottom end surface of the impurity removing box; an oil outlet pipe is arranged in the bottom end surface of the screening box; the upper end surface of the fixed seat is fixedly connected with a spring; the screening box is provided with a trash discharging port, and the outer end of the trash discharging port is provided with a first inclined plate and a second inclined plate; the upper end surface of the supporting column is fixedly connected with the mounting seat; the hydraulic cylinder is fixedly connected to the mounting surface of the mounting seat, and the hydraulic rod is fixedly connected to the working end surface of the hydraulic cylinder; the lower end surface of the fixed plate is fixedly connected with a cleaning brush; the drawing filter plate is connected to the bottom end face of the impurity removing box in a sliding manner; the baffle is fixedly connected with the outer end surface of the drawing filter plate. However, when the device is used for screening the drilling fluid, part of the drilling fluid is extruded and discharged in the process of back-and-forth cleaning of the cleaning brush, so that the drilling fluid is discharged and wasted. Based on this, the utility model designs a drilling fluid screening installation.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an at least defect among the prior art is overcome to a main aim at, provides a drilling fluid screening installation to the in-process that cleans is made a round trip at the cleaning brush that proposes in solving above-mentioned background, has partial drilling fluid by the extrusion exhaust condition, causes the extravagant problem of drilling fluid outer row.

In order to realize the technical scheme, the utility model discloses a following technical scheme:

a drilling fluid screening device comprises a screening main tank and a screening auxiliary tank, wherein a tank cover is arranged at the top center of the screening main tank, an inlet is formed at the top center of the tank cover, an outlet is formed at the bottom center of the screening main tank, an annular groove is formed at the center of the inner wall of the screening main tank, a spring is fixed at the bottom center of the annular groove, a through hole is formed in the inner wall of the screening main tank, a baffle is fixed at the position of the inner wall of the screening main tank close to the edge of the through hole, an annular frame is slidably connected with the inner wall of the annular groove, the bottom end of the annular frame is fixedly connected with the top end of the spring, a main filter plate is fixed inside the annular frame, an upper baffle plate and a lower baffle plate are symmetrically fixed at the top end and the bottom end of the annular frame, an opening is formed at the top end of the upper baffle plate, the screening device is characterized in that a sealing plate is arranged in the opening, a sealing plate matched with the opening is fixed on the side face of the sealing plate, fixing holes are formed in the edge positions of four corners of the sealing plate, and fixing holes are formed in the side face of the screening auxiliary box in a matched mode.

Preferably, screening auxiliary tank welded fastening is at screening main jar lateral wall, the screening auxiliary tank passes through the through-hole and screens main jar intercommunication, screening auxiliary tank and screening main jar welded fastening department coincide with screening main jar outer wall arc, the diameter of entry is far greater than the diameter of export.

Preferably, the spring is provided with a plurality of groups and the circumference is evenly fixed on the annular groove, the length of the spring when not deforming is equal to the difference between the height of the annular groove and the height of the annular frame.

Preferably, the through-hole is an arc-shaped groove matched with the radian of the inner wall of the screening main tank, the baffle is an arc plate matched with the through-hole, the arc length of the baffle is greater than that of the through-hole, the opening is an arc-shaped groove identical with the radian of the through-hole, and the arc length of the opening is smaller than that of the through-hole.

Preferably, but the sliding contact of ring frame lateral wall and annular inside wall connects, the difference of the internal and external diameters of ring frame is greater than the difference of the internal and external diameters of annular, the length of going up ring board and lower ring board all is greater than the height of spout, the lateral wall of going up ring board and lower ring board all with screening main tank inner chamber sliding contact connects.

Preferably, the height of the main filter plate is equal to that of the annular frame, the sizes of the sieve pores of the main filter plate and the auxiliary filter plate are the same, a sealing gasket is arranged at the contact position of the sealing plate and the opening, and the fixing hole is a threaded hole.

Compared with the prior art, the beneficial effects of the utility model are that: by arranging the annular groove, the spring, the annular frame, the upper retainer plate, the lower retainer plate, the through hole, the opening and the screening auxiliary box, along with continuous entering of drilling fluid, the drilling fluid is filtered by the main filter plate, the weight of the main filter plate is continuously increased, the spring is compressed, when the through hole is communicated with the opening, along with continuous entering of the drilling fluid, a filter material is flushed into the screening auxiliary box through the through hole, the spring jacks the main filter plate, so that the through hole and the opening are staggered, the drilling fluid is continuously filtered by the main filter plate, and the filter material enters the screening auxiliary box to be collected; this device can be continuous carry out drilling fluid screening, can not make the drilling fluid outer arranging when collecting the clearance filtrations.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the structure of the screening main tank of the present invention;

FIG. 3 is a schematic view of the internal structure of the screening main tank of the present invention;

fig. 4 is a schematic view of the cross-sectional structure of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1-screening main tank, 2-screening auxiliary tank, 3-tank cover, 4-inlet, 5-ring groove, 6-spring, 7-through hole, 8-baffle, 9-ring frame, 10-main filter plate, 11-upper baffle plate, 12-lower baffle plate, 13-opening hole, 14-outlet, 15-auxiliary filter plate, 16-closing plate, 17-sealing plate, 18-fixing hole and 20-opening hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the examples of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

As shown in fig. 1 and 2, the drilling fluid screening device comprises a screening main tank 1 and a screening auxiliary tank 2, wherein a tank cover 3 is arranged at the top center of the screening main tank 1, an inlet 4 is formed in the top center of the tank cover 3, an outlet 14 is formed in the bottom center of the screening main tank 1, an annular groove 5 is formed in the center of the inner wall of the screening main tank 1, a spring 6 is fixed at the bottom center of the annular groove 5, a through hole 7 is formed in the inner wall of the screening main tank 1, and a baffle plate 8 is fixed at the position, close to the edge of the through hole 7.

As shown in fig. 3 and 4, an annular frame 9 is slidably connected to the inner wall of the annular groove 5, the bottom end of the annular frame 9 is fixedly connected to the top end of the spring 6, a main filter plate 10 is fixed inside the annular frame 9, an upper baffle plate 11 and a lower baffle plate 12 are symmetrically fixed to the top end and the bottom end of the annular frame 9, an opening 13 is formed in the top end of the upper baffle plate 11, an outlet 14 is formed in the center of the bottom end of the screening auxiliary box 2, an auxiliary filter plate 15 is fixed in the middle of the screening auxiliary box 2, an opening 20 is formed in the upper portion of the side surface of the screening auxiliary box 2, a closing plate 16 is arranged inside the opening 20, a sealing plate 17 matched with the opening 20 is fixed to the side surface of the closing plate 16, fixing holes 18 are.

In the embodiment, the screening auxiliary tank 2 is welded and fixed on the side wall of the screening main tank 1, the screening auxiliary tank 2 is communicated with the screening main tank 1 through the through hole 7, the welding and fixing position of the screening auxiliary tank 2 and the screening main tank 1 is in arc fit with the outer wall of the screening main tank 1, and the diameter of the inlet 4 is far larger than that of the outlet 14; the springs 6 are provided with a plurality of groups, the circumferences of the groups of springs are uniformly fixed on the ring grooves 5, and the length of the springs 6 when the springs are not deformed is equal to the difference between the height of the ring grooves 5 and the height of the ring frame 9.

In the embodiment, the through hole 7 is an arc-shaped groove matched with the radian of the inner wall of the screening main tank 1, the baffle 8 is an arc-shaped plate matched with the through hole 7, the arc length of the baffle is greater than that of the through hole 7, the opening 13 is an arc-shaped groove with the same radian as that of the through hole 7, and the arc length of the opening 13 is less than that of the through hole 7; the outer side wall of the annular frame 9 and the inner side wall of the annular groove 5 are in slidable contact, the difference between the inner diameter and the outer diameter of the annular frame 9 is larger than the difference between the inner diameter and the outer diameter of the annular groove 5, the lengths of the upper ring baffle 11 and the lower ring baffle 12 are both larger than the height of the chute 5, and the outer side walls of the upper ring baffle 11 and the lower ring baffle 12 are in slidable contact with the inner cavity of the screening main tank 1; the height of the main filter plate 10 is equal to that of the annular frame 9, the sizes of the sieve pores of the main filter plate 10 and the auxiliary filter plate 15 are the same, a sealing gasket is arranged at the contact position of the sealing plate 17 and the opening 20, and the fixing hole 18 is a threaded hole.

One specific application of this embodiment is: the drilling fluid enters the screening main tank 1 through the inlet 4, firstly, the drilling fluid is screened and filtered through the main filter plate 10, the main filter plate 10 is fixed and continuously accumulated along with the screening, the weight of the main filter plate 10 is continuously increased, the spring 6 is compressed, the main filter plate 10 continuously moves downwards under the matching of the annular groove 5 and the annular frame 9, the upper retainer plate 11 and the lower retainer plate 12 always seal the annular groove 5 in the process, the screening main tank 1 is communicated with the screening auxiliary tank 2 along with the continuous downward movement of the main filter plate 10 when the opening 13 is communicated with the through hole 7, the solids on the main filter plate 10 are brought into the screening auxiliary tank 2 along with the continuous entering of the drilling fluid, the drilling fluid is screened through the auxiliary filter plate 15 during the communication of the opening 13 and the through hole 7, the main filter plate 10 is jacked up by the spring 6 along with the entering of the screening auxiliary tank 2, the opening 13 is staggered with the through hole 7, the screening main filter plate 1 is not communicated with, drilling fluid continues to pass through the screening main tank 1 for screening, the drilling fluid entering the screening auxiliary tank 2 is discharged through the auxiliary filter plate 15 and the outlet 14, the sealing plate 16 can be detached through the fixing hole 18, and the screened fixing is cleaned.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. The utility model provides a drilling fluid screening installation, includes screening main tank (1) and screening auxiliary tank (2), its characterized in that: the screening main tank (1) top center is provided with a tank cover (3), an inlet (4) is arranged at the top center of the tank cover (3), an outlet (14) is arranged at the bottom center of the screening main tank (1), an annular groove (5) is arranged at the center of the inner wall of the screening main tank (1), a spring (6) is fixed at the bottom center of the annular groove (5), a through hole (7) is arranged on the inner wall of the screening main tank (1), a baffle (8) is fixed at the position of the inner wall of the screening main tank (1) near the edge of the through hole (7), an annular frame (9) is connected with the inner wall of the annular groove (5) in a sliding manner, the bottom end of the annular frame (9) is fixedly connected with the top end of the spring (6), a main filter plate (10) is fixed inside the annular frame (9), an upper baffle plate (11) and a lower baffle plate (12) are symmetrically fixed at the top end and the top end, an outlet (14) is formed in the center of the bottom end of the screening auxiliary box (2), an auxiliary filter plate (15) is fixed in the middle of the screening auxiliary box (2), an opening (20) is formed in the upper portion of the side face of the screening auxiliary box (2), a sealing plate (16) is arranged inside the opening (20), a sealing plate (17) matched with the opening (20) is fixed to the side face of the sealing plate (16), fixing holes (18) are formed in the edge positions of four corners of the sealing plate (16), and fixing holes (18) are formed in the side face of the screening auxiliary box (2) in a matched mode.

2. The drilling fluid screening apparatus of claim 1, wherein: screening auxiliary tank (2) welded fastening is at screening main tank (1) lateral wall, screening auxiliary tank (2) are through-hole (7) and screening main tank (1) intercommunication, screening auxiliary tank (2) and screening main tank (1) welded fastening department coincide with screening main tank (1) outer wall arc, the diameter of entry (4) is far greater than the diameter of export (14).

3. The drilling fluid screening apparatus of claim 1, wherein: spring (6) are provided with a plurality of groups and the circumference is evenly fixed on annular (5), length when spring (6) do not take place deformation equals the difference of the height of annular (5) and annular frame (9) height.

4. The drilling fluid screening apparatus of claim 1, wherein: through-hole (7) are the arc wall that coincide with screening main tank (1) inner wall radian, baffle (8) are for the arc that cooperation through-hole (7) set up and arc length is greater than through-hole (7), trompil (13) are the arc wall the same with through-hole (7) radian, the arc length of trompil (13) is less than the arc length of through-hole (7).

5. The drilling fluid screening apparatus of claim 1, wherein: but annular frame (9) lateral wall and annular (5) inside wall sliding contact connect, the difference of the internal and external diameter of annular frame (9) is greater than the difference of the internal and external diameter of annular (5), the length of going up retaining ring board (11) and retaining ring board (12) down all is greater than the height of spout (5), the lateral wall of going up retaining ring board (11) and retaining ring board (12) down all with screening owner jar (1) inner chamber sliding contact connect.

6. The drilling fluid screening apparatus of claim 1, wherein: the height of the main filter plate (10) is equal to that of the annular frame (9), the sizes of the sieve pores of the main filter plate (10) and the auxiliary filter plate (15) are the same, a sealing gasket is arranged at the contact position of the sealing plate (17) and the opening (20), and the fixing hole (18) is a threaded hole.