Adjustable drilling fluid desludging cleaner

Abstract

The present invention discloses an adjustable drilling fluid desilter and cleaner, comprising: an adjustable cyclone, a cyclone inlet regulating valve, a cyclone overflow regulating valve, a cleaner inlet pipe, a cleaner outlet pipe, a desander and desilter support, and a cleaning vibrating screen. Compared to the prior art, the cyclone's inlet regulating valve and overflow regulating valve can adjust the inlet and outlet volumes. The adjustable cyclone's overflow pipe has an adjustable insertion depth, and the underflow port is adjustable in size and is located on and tangential to the sidewall of the cyclone body. This reduces the amount of fine rock debris in the underflow, adapts to the separation of drilling fluids of varying displacement, density, and viscosity from rock debris, and increases the applicability of the drilling fluid desilter and cleaner. The adjustable drilling fluid desilter and cleaner disclosed herein can adapt to drilling fluids of varying displacement, density, and viscosity in different work areas or at different drilling stages by adjusting the inlet regulating valve, overflow regulating valve, overflow pipe insertion depth, and underflow port size individually or in combination.

Description

Technical Field

[0001] The invention relates to the technical field of drilling fluid solid phase control equipment, in particular to an adjustable drilling fluid desludging cleaner. Background Art

[0002] In oil drilling operations, the drilling fluid desander and desilter cyclone is an important equipment for the four-stage solids control. During the drilling process of each well from shallow to deep, the drilling fluid density increases from low to high (1.1g / cm 3 ~2.5g / cm 3 ) changes, and the cuttings content also changes with changes in well depth and drilling speed.

[0003] Existing desander and desilter cyclones have always used the same structure and operating parameters to process drilling fluids in different conditions, resulting in low desilting efficiency or even no desilting in most cases. As a result, the solid particles in the drilling fluid continue to increase, increasing the workload of the downstream centrifuge and the probability of centrifuge jamming and clogging, which leads to serious wear of equipment such as mud pumps, drill bits, drilling tools and downhole instruments, reducing the drilling speed, and even causing the drill to get stuck or stop drilling. At the same time, it affects the quality of electrical logging and cementing, and reduces the permeability of oil and gas layers and oil and gas production capacity.

[0004] Therefore, how to enable a drilling fluid desanding and desilting cyclone to process drilling fluids of different densities is a technical problem that needs to be solved urgently by those skilled in the art. Summary of the Invention

[0005] In view of this, the present invention provides an adjustable drilling fluid desilting cleaner, which can remove mud from drilling fluid under different conditions.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] An adjustable drilling fluid desilter cleaner comprises: an adjustable cyclone, a desander and desilter bracket, a cleaning vibrating screen and a base;

[0008] The adjustable cyclone is fixed to the base via the desander and desilter bracket, and the cleaning vibrating screen is mounted on the base via a spring;

[0009] The adjustable cyclone includes: an overflow mechanism;

[0010] The overflow mechanism comprises an overflow outer cylinder and an overflow inner cylinder; the overflow inner cylinder is axially movable and sleeved inside the overflow outer cylinder.

[0011] Preferably, the overflow mechanism further comprises: a gear assembly provided on the overflow outer cylinder;

[0012] The outer wall of the overflow inner cylinder is provided with a rack matched with the gear assembly, and the rack is parallel to the axial direction of the overflow inner cylinder.

[0013] Preferably, a long groove is provided in the side wall of the overflow outer cylinder along the axial direction, a mounting plate is fixed to the cylinder wall on one side of the long groove, and the mounting plate is provided with a through hole for mounting the gear assembly;

[0014] The thickness of the rack is smaller than the width of the long slot, and the length of the rack is smaller than the length of the long slot.

[0015] Preferably, the gear assembly includes: a gear, a circular shaft section, a locking section, a threaded section and a screwing section arranged in sequence;

[0016] The circular shaft section is provided with an O-ring groove;

[0017] The overflow mechanism further comprises: a locking sleeve, a locking washer, a locking nut and a disc spring;

[0018] The locking sleeve is sleeved on the circular shaft segment with clearance fit;

[0019] The inner circumference of the locking washer and the outer circumference of the locking section are in polygonal shape;

[0020] The locking nut cooperates with the threaded section to sequentially press the locking washer, the disc spring, the locking sleeve, and the gear assembly onto the mounting plate.

[0021] Preferably, the overflow mechanism further comprises:

[0022] A scale provided on the side wall of the overflow outer cylinder;

[0023] An indicating arrow is provided on the rack and is used to cooperate with the scale.

[0024] Preferably, the liquid inlet pipe of the adjustable cyclone is provided with a cyclone liquid inlet regulating valve, and the overflow pipe of the adjustable cyclone is provided with a cyclone overflow regulating valve.

[0025] Preferably, the adjustable cyclone further comprises: a lower cylindrical barrel;

[0026] The lower cylindrical barrel comprises: a barrel body and a bottom flow port regulating mechanism;

[0027] The cylinder is provided with an underflow port, and the underflow port regulating mechanism can adjust the size of the underflow port.

[0028] Preferably, the underflow outlet adjustment mechanism comprises: a rectangular tube, a leaf spring, an adjustment bolt and a locking nut;

[0029] The lower end of the cylinder is closed, and the side wall of the cylinder is provided with a rectangular bottom flow port; the rectangular tube is connected to the bottom flow port, and the inner and outer walls of one side of the rectangular tube are respectively tangent to the inner and outer diameters of the side wall of the cylinder; the leaf spring is disposed in the rectangular tube, and the first end of the leaf spring is fixed to the rectangular tube;

[0030] The adjusting bolt passes through the rectangular tube, and the locking nut is sleeved on the adjusting bolt and located between the head of the locking nut and the rectangular tube; the end of the rod of the adjusting bolt is used to fix and adjust the second end of the leaf spring.

[0031] Preferably, the adjustable cyclone further comprises: an upper cylindrical cylinder and a middle conical cylinder sequentially connected between the overflow mechanism and the lower cylindrical cylinder;

[0032] The adjustable cyclone further includes a liquid inlet pipe radially connected to the upper cylindrical barrel.

[0033] Preferably, it further comprises: a cleaner liquid inlet pipe and a cleaner liquid outlet pipe;

[0034] There are multiple adjustable cyclones, and the multiple adjustable cyclones share one cleaner liquid inlet pipe and one cleaner liquid outlet pipe.

[0035] As can be seen from the above technical solution, the adjustable drilling fluid desilter provided by the present invention can adjust the number of cyclones and the processing capacity of each cyclone through the ball valves at the cyclone inlet and overflow port; the overflow pipe insertion depth and, therefore, the cyclone separation efficiency can be adjusted through the overflow pipe and the adjustment mechanism; and the size of the underflow port can be adjusted by adjusting the position of the underflow port spring plate. This ensures that the cyclone is always in the optimal working state when processing different drilling fluids, improves the separation efficiency, and adapts to the desanding and desilting requirements of drilling fluids with different drilling fluid densities, viscosities, and cuttings contents. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0037] Figure 1 A schematic structural diagram of an adjustable drilling fluid desilter cleaner provided in an embodiment of the present invention;

[0038] Figure 2 A schematic structural diagram of an adjustable cyclone provided in an embodiment of the present invention;

[0039] Figure 3 A schematic structural diagram of an overflow pipe and an adjustment mechanism provided in an embodiment of the present invention;

[0040] Figure 4 A schematic structural diagram of an overflow outer cylinder provided in an embodiment of the present invention;

[0041] Figure 5 A schematic structural diagram of an overflow inner cylinder provided in an embodiment of the present invention;

[0042] Figure 6 A schematic structural diagram of a gear assembly provided in an embodiment of the present invention;

[0043] Figure 7 A schematic structural diagram of a locking sleeve provided in an embodiment of the present invention;

[0044] Figure 8 A schematic structural diagram of a locking washer provided in an embodiment of the present invention;

[0045] Figure 9 A schematic structural diagram of a lower cylindrical barrel and a bottom flow outlet adjustment mechanism provided in an embodiment of the present invention;

[0046] Figure 10 A schematic structural diagram of a leaf spring provided in an embodiment of the present invention.

[0047] Among them, there are an adjustable cyclone 1, a cyclone liquid inlet regulating valve 2, a cyclone overflow regulating valve 3, a cleaner liquid inlet pipe 4, a cleaner liquid outlet pipe 5, a desander and desilter bracket 6, and a cleaning vibrating screen 7;

[0048] Overflow mechanism 11, liquid inlet pipe 12, upper cylindrical tube 13, middle conical tube 14, lower cylindrical tube 15;

[0049] Overflow outer cylinder 111, overflow inner cylinder 112, scale 113, indicator arrow 114, gear assembly 115;

[0050] Gear 1151, circular shaft section 1152, locking section 1154, threaded section 1155, screwing section 1156;

[0051] Locking sleeve 116, locking washer 117, locking nut 118, disc spring 119;

[0052] Cylinder 151 , rectangular tube 152 , leaf spring 153 , adjusting bolt 154 , locking nut 155 . DETAILED DESCRIPTION

[0053] The present invention discloses an adjustable drilling fluid desilter and cleaner, comprising an adjustable cyclone, a cyclone inlet pipe ball valve, a cyclone overflow pipe ball valve, a cleaner inlet pipe, a cleaner overflow pipe, a cleaner bracket, and a cleaning vibrating screen. Several adjustable cyclones are combined to share a common cleaner inlet pipe and a cleaner overflow pipe. The cleaner bracket is mounted on the base of the cleaning vibrating screen and positioned above the screen. The desilter's sand discharge port is located near the rear of the screen, allowing small rock cuttings to enter the screen for screening, discharging the cuttings and recovering the drilling fluid.

[0054] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0055] The embodiment of the present invention provides an adjustable drilling fluid desilter cleaner, comprising: an adjustable cyclone 1, a desander and desilter bracket 6, a cleaning vibrating screen 7, and a base;

[0056] Among them, the adjustable cyclone 1 is fixed to the base through the desander and desilter bracket 6, and the cleaning vibrating screen 7 is installed on the base through the spring; its structure can be referred to Figure 1 As shown;

[0057] The adjustable cyclone 1 includes: an overflow mechanism 11; its structure can refer to Figure 1 As shown;

[0058] The overflow mechanism 11 comprises an overflow outer cylinder 111 and an overflow inner cylinder 112; the overflow inner cylinder 112 can be axially moved and sleeved in the overflow outer cylinder 111; its structure can be referred to Figure 3 The overflow outer cylinder 111 is a hollow cylinder with flange structures at both ends. The upper end is connected to the overflow pipeline through the flange with bolts; the lower end is connected to the upper cylindrical cylinder 13 through the flange with bolts. The overflow inner cylinder 112 is a tubular structure with an outer diameter that is loosely matched with the inner diameter of the overflow outer cylinder 111.

[0059] As can be seen from the above technical solution, the adjustable drilling fluid desilter provided in the embodiment of the present invention can adjust the insertion depth of the overflow inner cylinder 112 through the overflow mechanism 11, thereby adjusting the separation efficiency of the cyclone, so that the cyclone is always in the optimal working state when processing different drilling fluids, thereby improving the separation efficiency and adapting to the desanding and desilting requirements of drilling fluids with different drilling fluid densities, viscosities, and drill cuttings contents.

[0060] Preferably, the overflow mechanism 11 further includes: a gear assembly 115 disposed on the overflow outer cylinder 111;

[0061] The outer wall of the overflow inner cylinder 112 is provided with a rack that cooperates with the gear assembly 115. The rack is parallel to the axial direction of the overflow inner cylinder 112 to achieve axial movement of the overflow inner cylinder 112 relative to the overflow outer cylinder 111.

[0062] Furthermore, a long groove is provided in the side wall of the overflow outer cylinder 111 along the axial direction, and a mounting plate is fixed to the cylinder wall on one side of the long groove, and the mounting plate has a through hole for mounting the gear assembly 115; its structure can be referred to Figure 4 As shown;

[0063] The thickness of the rack is smaller than the width of the long slot, and the length of the rack is smaller than the length of the long slot. Driven by the rack, the overflow inner tube 112 can move up and down along the long slot of the overflow outer tube 111. The difference between the length of the rack and the length of the long slot of the overflow outer tube determines the adjustment range of the overflow tube insertion depth.

[0064] Specifically, the gear assembly 115 includes: a gear 1151, a circular shaft section 1152, a locking section 1154, a threaded section 1155 and a screwing section 1156 arranged in sequence; its structure can be referred to Figure 6 As shown;

[0065] The circular shaft section 1152 is provided with an O-ring groove 1153 for installing an O-ring to perform a sealing function;

[0066] The overflow mechanism 11 further includes: a locking sleeve 116, a locking washer 117, a locking nut 118 and a disc spring 119; its structure can be referred to Figure 2 、 Figure 7 and Figure 8 As shown;

[0067] The locking sleeve 116 is loosely fitted on the circular shaft section 1152;

[0068] The inner circumference of the locking washer 117 and the outer circumference of the locking section 1154 are polygonal surfaces.

[0069] The locking nut 118 cooperates with the threaded section 1155 to press the locking washer 117, the disc spring 119, the locking sleeve 116, and the gear assembly 115 onto the mounting plate in sequence to achieve reliable assembly.

[0070] Furthermore, the overflow mechanism 11 further includes:

[0071] The scale 113 is provided on the side wall of the overflow outer cylinder 111; its structure can refer to Figure 2 As shown;

[0072] An arrow 114 is provided on the rack for cooperating with the scale 113. This arrangement allows for easy observation of the adjustment of the overflow inner cylinder 112.

[0073] In this embodiment, the liquid inlet pipe of the adjustable cyclone 1 is provided with a cyclone liquid inlet regulating valve 2, and the overflow pipe of the adjustable cyclone 1 is provided with a cyclone overflow regulating valve 3. The structure of the cyclone 1 can be referred to Figure 1 This solution can adjust the number of cyclones and the liquid inlet and outlet of each cyclone, adapt to the separation of drilling fluids and cuttings with different displacement, density and viscosity, and expand the application range of drilling fluid desander and desilter cleaners.

[0074] Furthermore, the adjustable cyclone 1 further comprises: a lower cylindrical barrel 15; the structure of which can be referred to Figure 2 As shown;

[0075] Among them, the lower cylindrical tube 15 includes: a cylinder 151 and a bottom flow regulating mechanism; its structure can refer to Figure 9 As shown;

[0076] The cylinder 151 is provided with an underflow port, and the underflow port regulating mechanism can adjust the size of the underflow port, thereby reducing the content of fine rock cuttings in the underflow, adapting to the separation of drilling fluid and rock cuttings with different displacement, density and viscosity, and improving the application range of the drilling fluid desander and desilter cleaner.

[0077] Specifically, the bottom flow outlet regulating mechanism includes: a rectangular tube 152, a leaf spring 153, an adjusting bolt 154 and a locking nut 155; its structure can be referred to Figure 9 As shown;

[0078] The lower end of the cylinder 151 is closed, and a rectangular bottom flow port is formed on the side wall of the cylinder 151. A rectangular tube 152 is connected to the bottom flow port, and the inner and outer walls of one side of the rectangular tube 152 are tangent to the inner and outer diameters of the side wall of the cylinder 151. A leaf spring 153 is disposed within the rectangular tube 152, and a first end of the leaf spring 153 is fixed to the rectangular tube 152.

[0079] The adjusting bolt 154 passes through the rectangular tube 152 , and the locking nut 155 is sleeved on the adjusting bolt 154 and located between the head of the locking nut 155 and the rectangular tube 152 ; the end of the rod of the adjusting bolt 154 is used to fix and adjust the second end of the leaf spring 153 .

[0080] As a preference, the adjustable cyclone 1 further comprises: an upper cylindrical tube 13 and a middle conical tube 14 sequentially connected between the overflow mechanism 11 and the lower cylindrical tube 15; the structure of which can be referred to Figure 2 As shown;

[0081] The adjustable cyclone 1 further includes a liquid inlet pipe 12 radially connected to the upper cylindrical barrel 13 .

[0082] The adjustable drilling fluid desilting cleaner provided in the embodiment of the present invention further includes: a cleaner liquid inlet pipe 4 and a cleaner liquid outlet pipe 5;

[0083] There are multiple adjustable cyclones 1 , and the multiple adjustable cyclones 1 share one cleaner liquid inlet pipe 4 and one cleaner liquid outlet pipe 5 , which can simplify the structure.

[0084] The present invention will be further described below with reference to specific embodiments:

[0085] like Figure 1 As shown, the present invention discloses an adjustable drilling fluid desilter and cleaner. It includes an adjustable cyclone 1, a cyclone inlet regulating valve 2, a cyclone overflow regulating valve 3, a cleaner inlet pipe 4, a cleaner outlet pipe 5, a desander and desilter support 6, and a cleaning vibrating screen 7. The adjustable cyclone 1 is provided with an inlet regulating valve 2 on its inlet pipe and an overflow regulating valve 3 on its overflow pipe, allowing the number of cyclones and the inlet and outlet volumes of each cyclone to be adjusted.

[0086] The adjustable cyclone 1 comprises an overflow mechanism 11, a liquid inlet pipe 12, an upper cylindrical tube 13, a middle conical tube 14, a lower cylindrical tube, and an underflow adjustment mechanism 15. The overflow mechanism 11 comprises an outer overflow tube 111, an inner overflow tube 112, a scale 113, an indicator arrow 114, a gear assembly 115, a locking sleeve 116, a locking washer 117, a locking nut 118, and a disc spring 119. The outer overflow tube 111 is a hollow cylinder with flanges at both ends. The upper end is bolted to the overflow pipeline via a flange; the lower end is bolted to the upper cylindrical tube 13 via a flange. A long slot is cut into one side of the outer tube; a plate is welded to the wall on one side of the slot, with ribs welded to both ends. A circular hole is located in the center of the plate for securing the gear assembly. The overflow inner cylinder 112 is a tubular structure, and its outer diameter is clearance-matched with the inner diameter of the overflow outer cylinder 111; a rack is embedded on one side of its upper section, the thickness of the rack is less than the width of the long groove of the overflow outer cylinder 111, and the length of the rack is less than the length of the long groove of the overflow outer cylinder. Driven by the rack, the overflow inner cylinder can move up and down along the long groove of the overflow outer cylinder 111. The difference between the length of the rack and the length of the long groove of the overflow outer cylinder is the adjustment range of the insertion depth of the overflow pipe; the overflow inner cylinders at both ends of the rack each have an O-ring groove for installing an O-ring to perform a sealing function.

[0087] The gear of the gear assembly 115 cooperates with the rack. The gear assembly 115 is close to the gear 1151. There is a circular shaft 1152. The outer diameter of the circular shaft section 1152 is clearance-matched with the inner diameter of the locking sleeve 116. There is an O-ring groove 1153 in the middle of the shaft for installing the O-ring to play a sealing role; close to the circular shaft section is a hexagonal shaft, which is used to fix the gasket 117 and disc spring 119 with an inner hexagonal hole. The next section is a thread, so that the locking nut 118 fixes the gasket 117, disc spring 119, locking sleeve 116, and gear assembly 115 to the overflow outer cylinder 111; the next section is a hexagonal shaft, whose function is to use a wrench to rotate the hexagonal shaft to rotate the gear, drive the rack to move, and thus change the insertion depth of the overflow pipe.

[0088] The lower cylindrical tube 15 comprises a body 151, a rectangular tube 152, a leaf spring 153, an adjusting bolt 154, and a locking nut 155. The inner diameter of the body 151 is the same as the inner diameter of the lower end surface of the middle conical tube 14, and the lower opening is sealed. A rectangular tube 152 is welded to the side of the body 151. The outer and inner walls of the rectangular tube 152 are tangent to the inner and outer diameters of the body 151, respectively. A circular hole is provided on the inner wall of the rectangular tube 152 for securing and adjusting the leaf spring 153 via the adjusting bolt 154 and locking nut 155.

[0089] During use, drilling fluid requiring desilting is pumped into the adjustable drilling fluid desilter cleaner via a sand pump to remove small 20-40μm rock debris. The overflow then flows into the centrifuge suction tank, while the underflow flows into a clean vibrating screen for screening, removing rock debris, and recovering the drilling fluid. To adapt to different drilling fluid densities, viscosities, and cuttings contents, and to improve separation efficiency, the number of cyclones and the processing capacity of each cyclone can be adjusted via the cyclone inlet regulating valve 2 and the cyclone overflow regulating valve 3. The overflow pipe insertion depth, and thus the cyclone separation efficiency, can be adjusted via the overflow mechanism 11. The underflow port spring plate can be adjusted to adjust the size of the underflow port, ensuring that the cyclone is always in the optimal discharge state when handling different drilling fluids, thereby improving separation efficiency.

[0090] In summary, the present invention discloses an adjustable drilling fluid desilter cleaner for separating cuttings from various drilling fluids. The adjustable drilling fluid desilter cleaner comprises: an adjustable cyclone, a cyclone inlet regulating valve, a cyclone overflow regulating valve, a cleaner inlet pipe, a cleaner outlet pipe, a desander and desilter bracket, and a cleaning vibrating screen. Compared with the cyclone in the prior art, the drilling fluid desilter cleaner of the present invention has an adjustable inlet regulating valve and an overflow regulating valve for the cyclone, which can adjust the inlet and outlet volumes; the overflow pipe of the adjustable cyclone has an adjustable insertion depth, and the bottom flow port is adjustable in size and is opened on the side wall of the main body and tangent to the side wall, which can reduce the content of fine cuttings in the bottom flow, adapt to the separation of drilling fluids of different displacement, density, and viscosity from cuttings, and improve the scope of application of the drilling fluid desilter cleaner. The adjustable drilling fluid desilter and cleaner disclosed herein can accommodate drilling fluids of varying flow rates, densities, and viscosities by adjusting the inlet regulating valve, overflow regulating valve, overflow pipe insertion depth, and underflow port size individually or in combination, depending on the work area or drilling period. The purified drilling fluid is discharged through the overflow pipe into the centrifuge suction tank. The underflow enters the clean vibrating screen for further fluid recovery and removal of cuttings. The adjustable drilling fluid desilter and cleaner disclosed herein is suitable for separating drilling fluids of varying flow rates, densities, and viscosities from cuttings.

[0091] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0092] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An adjustable drilling fluid desilter cleaner, characterized in that: include: Adjustable cyclone (1), desander and desilter bracket (6), cleaning vibrating screen (7) and base; The adjustable cyclone (1) is fixed to the base via the desander and desilter bracket (6), and the cleaning vibrating screen (7) is mounted on the base via a spring; The adjustable cyclone (1) comprises: an overflow mechanism (11); The overflow mechanism (11) comprises: an overflow outer cylinder (111) and an overflow inner cylinder (112); the overflow inner cylinder (112) is axially movable and sleeved inside the overflow outer cylinder (111); The adjustable cyclone (1) further comprises: a lower cylindrical barrel (15); The lower cylindrical barrel (15) comprises: a barrel body (151) and a bottom flow outlet regulating mechanism; The cylinder (151) is provided with an underflow port, and the underflow port regulating mechanism is capable of regulating the size of the underflow port; The bottom flow outlet regulating mechanism comprises: a rectangular tube (152), a plate spring (153), an adjusting bolt (154) and a second locking nut (155); The lower end of the cylinder (151) is closed, and the side wall of the cylinder (151) is provided with a rectangular bottom flow port; the rectangular tube (152) is connected to the bottom flow port, and the inner and outer walls of one side of the rectangular tube (152) are respectively tangent to the inner and outer diameters of the side wall of the cylinder (151); the leaf spring (153) is arranged in the rectangular tube (152), and the first end of the leaf spring (153) is fixed to the rectangular tube (152); The adjusting bolt (154) passes through the rectangular tube (152), and the second locking nut (155) is sleeved on the adjusting bolt (154) and located between the head of the second locking nut (155) and the rectangular tube (152); the end of the rod of the adjusting bolt (154) is used to fix and adjust the second end of the leaf spring (153); The adjustable cyclone (1) further comprises: an upper cylindrical cylinder (13) and a middle conical cylinder (14) sequentially connected between the overflow mechanism (11) and the lower cylindrical cylinder (15); The adjustable cyclone (1) further comprises: a liquid inlet pipe (12) radially connected to the upper cylindrical barrel (13).

2. The adjustable drilling fluid desilter cleaner according to claim 1, characterized in that: The overflow mechanism (11) further includes: a gear assembly (115) disposed on the overflow outer cylinder (111); The outer wall of the overflow inner cylinder (112) is provided with a rack that cooperates with the gear assembly (115), and the rack is parallel to the axial direction of the overflow inner cylinder (112).

3. The adjustable drilling fluid desilter cleaner according to claim 2, characterized in that: A long groove is formed in the axial direction on the side wall of the overflow outer cylinder (111); a mounting plate is fixed to the cylinder wall on one side of the long groove; the mounting plate has a through hole for mounting the gear assembly (115); The thickness of the rack is smaller than the width of the long slot, and the length of the rack is smaller than the length of the long slot.

4. The adjustable drilling fluid desilter cleaner according to claim 3, characterized in that: The gear assembly (115) comprises: a gear (1151), a circular shaft section (1152), a locking section (1154), a threaded section (1155), and a screwing section (1156), which are arranged in sequence; The circular shaft section (1152) is provided with an O-ring groove (1153); The overflow mechanism (11) further includes: a locking sleeve (116), a locking washer (117), a first locking nut (118), and a disc spring (119); The locking sleeve (116) is sleeved on the circular shaft section (1152) with clearance fit; The inner circumference of the locking washer (117) and the outer circumference of the locking section (1154) are polygonal surfaces; The first locking nut (118) cooperates with the threaded section (1155) to sequentially press the locking washer (117), the disc spring (119), the locking sleeve (116), and the gear assembly (115) onto the mounting plate.

5. The adjustable drilling fluid desilter cleaner according to claim 3, characterized in that: The overflow mechanism (11) further comprises: A scale (113) provided on a side wall of the overflow outer cylinder (111); An indicating arrow (114) is provided on the rack and is used to cooperate with the scale (113).

6. The adjustable drilling fluid desilter cleaner according to claim 1, characterized in that: The liquid inlet pipe of the adjustable cyclone (1) is provided with a cyclone liquid inlet regulating valve (2), and the overflow pipe of the adjustable cyclone (1) is provided with a cyclone overflow regulating valve (3).

7. The adjustable drilling fluid desilter cleaner according to claim 1, characterized in that: Also includes: a cleaner liquid inlet pipe (4) and a cleaner liquid outlet pipe (5); There are multiple adjustable cyclones (1), and the multiple adjustable cyclones (1) share one cleaner liquid inlet pipe (4) and one cleaner liquid outlet pipe (5).

Images