Raw material screening device for drilling fluid production

Abstract

The utility model belongs to the technical field of drilling fluid production, and particularly relates to a raw material screening device for drilling fluid production, which comprises a screening box, the inner wall of the screening box is detachably connected with the outer surfaces of a plurality of screening plates respectively, and the front surface and the back surface of the screening box are respectively provided with two mutually symmetrical moving grooves. A brush is driven by a first threaded sleeve to move rightwards to sweep solid impurities screened on the upper surface of a screening plate, the swept impurities enter a waste collecting box through an inclined plate to be collected in a centralized mode, meanwhile, a spring a drives a connecting rod to downwards press the brush to sweep the solid impurities in meshes in the surface of the screening plate, and the situation that the solid impurities block the meshes of the screening plate is avoided; and therefore, the problems that the screening device cannot be normally used, harmful solid phases blocking the meshes need to be manually removed and the use process is too tedious due to the fact that the meshes are extremely prone to being blocked in the screening process of an existing device are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of drilling fluid production, and in particular relates to a raw material screening device for drilling fluid production. Background Art

[0002] Drilling fluid is a general term for various circulating fluids that meet the needs of drilling work with their multiple functions during the drilling process. Drilling fluid is the blood of drilling, also known as drilling flushing fluid. Drilling fluid can be divided into clean water, mud, clay-free flushing fluid, emulsion, foam and compressed air according to its composition. Drilling fluid can be divided into water-based drilling fluid, oil-based drilling fluid, gas-type drilling fluid, etc. according to the dispersion medium (continuous phase). Drilling fluid is mainly composed of liquid phase, solid phase and chemical treatment agent. The liquid phase can be water (fresh water, salt water), oil (crude oil, diesel) or emulsion (mixed oil emulsion and invert emulsion), the solid phase includes useful solid phase (bentonite, weighting material) and useless solid phase (rock), and the chemical treatment agent includes inorganic, organic and polymer compounds.

[0003] Drilling fluid is an important and indispensable component of drilling operations. On the one hand, it is related to safe, fast and high-quality drilling, and on the other hand, it is related to the protection of oil and gas layers. According to actual work needs, a series of drilling fluid performance parameters are specified for drilling fluid. As the basis for adjusting and controlling the performance of drilling fluid, the control of solid content in drilling fluid is one of them. Therefore, when producing drilling fluid, it is necessary to remove harmful solids in the drilling fluid raw materials. Most of the existing drilling fluid screening devices screen through a screen plate with a fixed structure. The screening efficiency is low and the mesh is easily blocked, resulting in the screening device being unable to be used normally. The harmful solids that block the mesh need to be manually removed, and the use process is too cumbersome. Utility Model Content

[0004] In order to solve the problems raised in the above background technology, the utility model provides a raw material screening device for drilling fluid production.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a raw material screening device for drilling fluid production, comprising a screening box, the inner wall of the screening box is detachably connected to the outer surface of a plurality of screening plates, the front and back of the screening box are respectively provided with two mutually symmetrical movable grooves, the number and position of the movable grooves correspond to the number and position of the screening plates, the inner wall of the movable groove is provided with a debris removal component, the lower side of the left and right sides of the screening box is provided with a screening component, the right side of the screening box is symmetrically provided with a plurality of discharge ports, the positions of the discharge ports correspond to the positions of the screening plates;

[0006] The impurity removal component includes two screw rods rotatably connected to the right sides of the inner walls of the two moving grooves, the left ends of the screw rods pass through the bearings and the rotating shaft clamped on the left sides of the inner walls of the moving grooves and are fixedly connected to the output shaft of the stepper motor, the stepper motor is installed on the left side of the screening box, the outer surface of the screw rod is threadedly connected with a first threaded sleeve, and the opposite sides of the two first threaded sleeves are respectively fixedly connected to the front and back sides of the second threaded sleeve, the front and rear sides of the lower surface of the second threaded sleeve are respectively fixedly connected to the upper surfaces of the two connecting cylinders, the upper surface of the inner wall of the connecting cylinder is fixedly connected to the upper surface of the spring a, the lower surface of the spring a is fixedly connected to the upper surface of the connecting rod, the lower surface of the connecting rod is installed with a brush, and the lower surface of the brush fits with the upper surface of the screening plate.

[0007] Preferably, the right side of the screening plate is detachably connected to the left side of the inclined plate, the lower surface of the inclined plate is fitted with the left side of the upper surface of the waste collecting box, the number and positions of the waste collecting boxes correspond to the number and positions of the screening plates, and the left side of the waste collecting box is detachably connected to the right side of the screening box.

[0008] Preferably, the left and right sides of the lower surface of the screening box are respectively connected to one end of two liquid outlet pipes, and the lower side of the inner wall of the screening box is conical in shape.

[0009] Preferably, the screening assembly includes two fixed plates installed on the lower sides of the left and right sides of the screening box, the lower surfaces of the fixed plates are respectively fixed to the upper surfaces of a plurality of springs b, the lower surfaces of the springs b are fixed to the upper surface of the placement rack, and a vibration motor is installed at the center of the lower surface of the screening box.

[0010] Preferably, a feed hopper is installed on the left side of the upper surface of the screening box, and the shape of the feed hopper is triangular.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The utility model drives the brush to move rightward through the first threaded sleeve to clean the solid impurities screened on the upper surface of the screening plate. The cleaned impurities enter the waste collection box through the inclined plate for centralized collection. At the same time, the spring a drives the connecting rod to press the brush downward to clean the solid impurities in the mesh holes on the surface of the screening plate to avoid clogging the mesh holes of the screening plate. This solves the problem that the mesh holes of the existing device are easily clogged during screening, resulting in the screening device being unable to be used normally, requiring manual removal of harmful solid phases clogging the mesh holes, and the use process being too cumbersome.

[0013] The utility model starts the vibrating motor to drive the screening box to vibrate, and the vibration of the screening box drives the spring b to contract and extend up and down, thereby screening the raw materials of the drilling fluid through the screening plate, and the spring b amplifies the vibration of the screening box under the action of its own elastic force, thereby improving the screening efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model in the front view;

[0017] Figure 3 It is an enlarged structural schematic diagram of A in the utility model;

[0018] Figure 4 It is a schematic diagram of the structure of the left view in the utility model;

[0019] In the figure: 1. Screening box; 2. Feed hopper; 3. Discharge port; 4. Inclined plate; 5. Waste collection box; 6. Moving trough;

[0020] Debris removal components: 71, stepping motor; 72, screw; 73, first threaded sleeve; 74, second threaded sleeve; 75, connecting tube; 76, spring a; 77, connecting rod; 78, brush;

[0021] 8. Screening plate;

[0022] Screening components: 91, vibration motor; 92, fixing plate; 93, spring b;

[0023] 10. Placement rack; 11. Liquid outlet pipe. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Example

[0026] See also Figure 1-4The utility model provides the following technical solutions: a raw material screening device for drilling fluid production, comprising a screening box 1, the inner walls of the screening box 1 are detachably connected to the outer surfaces of a plurality of screening plates 8, the front and back sides of the screening box 1 are respectively provided with two symmetrical movable grooves 6, the number and positions of the movable grooves 6 correspond to the number and positions of the screening plates 8, the inner walls of the movable grooves 6 are provided with impurity removal components, the lower sides of the left and right sides of the screening box 1 are provided with screening components, the right side of the screening box 1 is symmetrically provided with a plurality of discharge ports 3, the positions of the discharge ports 3 correspond to the positions of the screening plates 8.

[0027] Specifically, the right side of the screening plate 8 is detachably connected to the left side of the inclined plate 4, the lower surface of the inclined plate 4 is fitted with the left side of the upper surface of the waste collecting box 5, the number and position of the waste collecting boxes 5 correspond to the number and position of the screening plates 8, and the left side of the waste collecting box 5 is detachably connected to the right side of the screening box 1;

[0028] The solid impurities screened out on the upper surface of the screening plate 8 are cleaned by the impurity removal component, and the cleaned impurities enter the waste collection box 5 through the inclined plate 4 for centralized collection.

[0029] Specifically, the left and right sides of the lower surface of the screening box 1 are respectively connected to one end of the two liquid outlet pipes 11, and the lower side of the inner wall of the screening box 1 is conical;

[0030] The lower side of the inner wall of the screening box 1 is set to be conical, which can prevent the drilling fluid raw material from accumulating at the bottom of the screening box 1. The drilling fluid raw material filtered and screened by the screening plate 8 is discharged from the screening box 1 through the liquid outlet pipe 11.

[0031] Specifically, the impurity removal component is provided with two screw rods 72 rotatably connected to the right sides of the inner walls of the two moving grooves 6, the left end of the screw rod 72 passes through the bearing and the rotating shaft clamped on the left side of the inner wall of the moving groove 6 and is fixedly connected to the output shaft of the stepper motor 71, the stepper motor 71 is installed on the left side of the screening box 1, the outer surface of the screw rod 72 is threadedly connected with a first threaded sleeve 73, and the opposite sides of the two first threaded sleeves 73 are respectively fixedly connected to the front and back sides of the second threaded sleeve 74, the front and rear sides of the lower surface of the second threaded sleeve 74 are respectively fixedly connected to the upper surfaces of two connecting tubes 75, the upper surface of the inner wall of the connecting tube 75 is fixedly connected to the upper surface of the spring a76, the lower surface of the spring a76 is fixedly connected to the upper surface of the connecting rod 77, the lower surface of the connecting rod 77 is installed with a brush 78, and the lower surface of the brush 78 is in contact with the upper surface of the screening plate 8;

[0032] The stepper motor 71 is started by an external power supply, and the two stepper motors 71 running in the same direction and at the same time drive the screw 72 to rotate. The rotation of the screw 72 drives the two first threaded sleeves 73 and the second threaded sleeve 74 to move to the right, and the second threaded sleeve 74 drives the brush 78 to move to the right to clean the solid impurities screened on the upper surface of the screening plate 8. At the same time, the spring a76 drives the connecting rod 77 to press the brush 78 downward to clean the solid impurities in the mesh on the surface of the screening plate 8 to prevent them from clogging the mesh of the screening plate 8.

[0033] Specifically, the screening assembly includes two fixing plates 92 installed on the lower sides of the left and right sides of the screening box 1, the lower surfaces of the fixing plates 92 are respectively fixed to the upper surfaces of a plurality of springs b93, the lower surfaces of the springs b93 are fixed to the upper surface of the placement frame 10, and a vibration motor 91 is installed at the center of the lower surface of the screening box 1;

[0034] The vibration motor 91 is started by an external power supply, and the vibration motor 91 starts to drive the screening box 1 to vibrate. The vibration of the screening box 1 drives the spring b93 to contract and extend up and down. The spring b93 amplifies the vibration of the screening box 1 under the action of its own elastic force, and then the drilling fluid raw materials are screened through the screening plate 8.

[0035] The working principle and use process of this utility model:

[0036] The utility model, when in use;

[0037] Drilling fluid raw materials are put into the feed hopper 2, and the stepper motor 71 drives the screw 72 to rotate. The rotation of the screw 72 drives the two first threaded sleeves 73 and the second threaded sleeve 74 to move rightward, and the second threaded sleeve 74 drives the brush 78 to move rightward to clean the solid impurities screened on the upper surface of the screening plate 8. The cleaned impurities enter the waste collection box 5 through the inclined plate 4 for centralized collection. At the same time, the spring a76 drives the connecting rod 77 to press the brush 78 downward to clean the solid impurities in the mesh of the surface of the screening plate 8 to prevent them from clogging the mesh of the screening plate 8;

[0038] The vibration motor 91 is started to drive the screening box 1 to vibrate. The vibration of the screening box 1 drives the spring b93 to contract and extend up and down. The spring b93 amplifies the vibration of the screening box 1 under the action of its own elastic force, and then screens the raw materials of the drilling fluid through the screening plate 8.

[0039] The circuits, electronic components and modules involved are all prior art and can be fully implemented by those skilled in the art. Needless to say, the content protected by this utility model does not involve improvements to software and methods.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A raw material screening device for drilling fluid production, comprising a screening box (1), characterized in that: The inner wall of the screening box (1) is detachably connected to the outer surfaces of a plurality of screening plates (8), the front and back of the screening box (1) are respectively provided with two mutually symmetrical movable grooves (6), the number and positions of the movable grooves (6) correspond to the number and positions of the screening plates (8), the inner wall of the movable groove (6) is provided with a cleaning assembly, the lower sides of the left and right sides of the screening box (1) are provided with screening assemblies, the right side of the screening box (1) is symmetrically provided with a plurality of discharge ports (3), the positions of the discharge ports (3) correspond to the positions of the screening plates (8); The impurity removal assembly comprises two screw rods (72) rotatably connected to the right side surfaces of the inner walls of the two moving grooves (6); the left end of the screw rod (72) passes through the bearing and the rotating shaft clamped on the left side surface of the inner wall of the moving groove (6) and is fixedly connected to the output shaft of the stepping motor (71); the stepping motor (71) is installed on the left side surface of the screening box (1); the outer surface of the screw rod (72) is threadedly connected to a first threaded sleeve (73), and the opposite sides of the two first threaded sleeves (73) are respectively connected to the second threaded sleeves (73). The front and back sides of the threaded sleeve (74) are fixedly connected, the front and rear sides of the lower surface of the second threaded sleeve (74) are respectively fixedly connected to the upper surfaces of the two connecting tubes (75), the upper surface of the inner wall of the connecting tube (75) is fixedly connected to the upper surface of the spring a (76), the lower surface of the spring a (76) is fixedly connected to the upper surface of the connecting rod (77), the lower surface of the connecting rod (77) is installed with a brush (78), and the lower surface of the brush (78) is in contact with the upper surface of the screening plate (8).

2. A raw material screening device for drilling fluid production according to claim 1, characterized in that: The right side surface of the screening plate (8) is detachably connected to the left side surface of the inclined plate (4); the lower surface of the inclined plate (4) is in contact with the left side of the upper surface of the waste collecting box (5); the number and position of the waste collecting boxes (5) correspond to the number and position of the screening plates (8); the left side surface of the waste collecting box (5) is detachably connected to the right side surface of the screening box (1).

3. The raw material screening device for drilling fluid production according to claim 1, characterized in that: The left and right sides of the lower surface of the screening box (1) are respectively connected to one end of two liquid outlet pipes (11), and the lower side of the inner wall of the screening box (1) is in a conical shape.

4. The raw material screening device for drilling fluid production according to claim 1, characterized in that: The screening assembly comprises two fixing plates (92) mounted on the lower sides of the left and right sides of the screening box (1), the lower surfaces of the fixing plates (92) being respectively fixedly connected to the upper surfaces of a plurality of springs b (93), the lower surfaces of the springs b (93) being fixedly connected to the upper surface of the placement frame (10), and a vibration motor (91) being mounted at the center of the lower surface of the screening box (1).

5. The raw material screening device for drilling fluid production according to claim 1, characterized in that: A feed hopper (2) is installed on the left side of the upper surface of the screening box (1), and the feed hopper (2) is in the shape of a triangle.

Images