A drilling mud cuttings processing system

Abstract

The present application relates to the technical field of drill cuttings processing, and specifically discloses a drilling mud drill cuttings processing system, which includes a screening unit, a conveying unit, a buffer unit, a drying unit and a buffer unit. The drying unit includes a frame, and a separation barrel is rotatably arranged on the frame. The cylinder wall of the separation barrel includes a first outer inclined section, a right-angle connecting section and a second outer inclined section connected in sequence from low to high, and the inner peripheral walls of the first outer inclined section, the right-angle connecting section and the second outer inclined section are all provided with a plurality of drainage holes; the frame is also provided with a drop hopper for dropping materials, an intermittent blocking mechanism for intermittently blocking the discharge hole of the drop hopper, a cutter for cutting the raw material at the right-angle connecting section, a push ring for connecting several cutters, and a drive structure for driving the push ring to reciprocate in a direction close to or away from the second outer inclined section. The processing system of the present application has the effect of efficiently dehydrating drill cuttings.

Description

Technical Field

[0001] The present application relates to the field of drill cuttings processing technology, and in particular to a drilling mud and drill cuttings processing system. Background Art

[0002] Currently, mud cuttings processing equipment is often installed at drilling sites to ensure environmentally friendly treatment of drill cuttings and post-drilling waste drilling fluid. During construction, the mud cuttings processing equipment collects and processes drill cuttings and post-drilling waste drilling fluid, ensuring that drill cuttings are not dropped on the ground and are treated harmlessly, allowing for waste recycling.

[0003] In related technology, a water-based mud cuttings processing system includes a screening unit, a conveying unit, a buffer unit, and a drying unit. The screening unit includes several vibrating screens, the buffer unit includes a collection bin, a cuttings box, and a liquid storage tank, the drying unit includes a dryer, and the conveying unit includes multiple screw conveyors connected sequentially between the vibrating screens and the collection bin, between the collection bin and the dryer, between the dryer and the cuttings box, and between the dryer and the liquid storage tank. Each unit achieves solid-liquid separation of mud cuttings through collection, conveying, chemical addition, mixing, and solidification.

[0004] When the system is running, the water-containing drill cuttings are continuously transported by the screw conveyor into the dryer, and then the separated rock cuttings and clear liquid are continuously discharged from the dryer; in this process, a small amount of drilling fluid is often wrapped in the blocky drill cuttings, and the small amount of drilling fluid wrapped in the drill cuttings is not easy to separate from the rock cuttings, so that a small amount of drill cuttings wrapped with drilling fluid are discharged by the dryer to the conveying unit, resulting in poor dehydration effect of the drill cuttings. Summary of the Invention

[0005] In order to improve the problem of poor dehydration effect of drill cuttings, the present application provides a drilling mud and drill cuttings processing system.

[0006] The drilling mud and cuttings processing system provided in this application adopts the following technical solutions:

[0007] A drilling mud and cuttings processing system includes a screening unit, a conveying unit, a buffer unit, a drying unit and a buffer unit, wherein the drying unit includes a frame, and the frame is provided with:

[0008] A separation barrel, the separation barrel being rotatably mounted on the frame, wherein the barrel wall of the separation barrel comprises, from bottom to top, a first outer oblique section, a right-angle connecting section, and a second outer oblique section connected in sequence, wherein the inner circumferential walls of the first outer oblique section, the right-angle connecting section, and the second outer oblique section are all provided with a plurality of drainage holes;

[0009] A drop hopper is provided above the separation barrel and is used to collect the mixed material transferred to the drying unit. A plurality of discharge holes are provided on the peripheral wall of the drop hopper, and a perforation is provided at the bottom of the drop hopper;

[0010] An intermittent blocking mechanism, used for intermittently blocking the discharge hole of the hopper;

[0011] A push ring is located in the separation barrel, and the bottom surface of the push ring is detachably attached to the bottom surface of the right-angle connection section, and a plurality of cutters are fixedly provided at intervals on the upper end surface of the push ring;

[0012] The driving structure is used to drive the push ring to move back and forth in a direction close to or away from the second outer oblique section.

[0013] By adopting the above technical solution, when in use, the raw materials conveyed to the hopper by the conveying unit are discharged into the separation barrel along the discharge hole, and then under the rotation of the separation barrel, the centrifuged mixture rolls in the direction from the first outer inclined section to the right-angle connection section. In this process, the adhered water on the surface of the drill cuttings in the mixture is separated from the drill cuttings by the centrifugal force, and then the adhered water is discharged from the separation barrel along the drainage hole. Then, under the continuous centrifugal action, the drill cuttings with dehydrated surface roll to the right-angle connection section. In this process, the drill cuttings are cut by the cutter on the surface of the push ring, so that the drill cuttings are cut by the cutter, so that the water entrained in the drill cuttings is exposed to the surface of the drill cuttings at the cut opening. At this time, the water is discharged along the drainage hole under the action of centrifugal force. The intermittent blocking mechanism then blocks the discharge hole of the hopper, stopping the flow of mixed material into the separation barrel. The drive mechanism then drives the push ring upward, pushing the drill cuttings abutting the surface of the right-angled connecting section to the surface of the second outer inclined section. The drill cuttings on the surface of the second outer inclined section are then thrown out from the surface of the second outer inclined section under the action of centrifugal force, thereby effectively separating the cuttings from the surface water and the internal entrained water, achieving efficient dehydration of the cuttings. The drive mechanism then drives the push ring down to the bottom surface of the right-angled connecting section, and the intermittent blocking mechanism opens the discharge hole of the hopper to carry out the next round of cuttings feeding and drying.

[0014] Optionally, the intermittent blocking mechanism includes a plug and a driving assembly disposed on the frame and used to drive the plug to detachably block the discharge hole.

[0015] By adopting the above technical solution, the driving component drives the plug to move so that the plug can seal the discharge hole, so as to ensure that when the driving structure drives the push ring to rise, no other drill chips will centrifugally roll down along the first outer inclined section to the bottom wall of the push ring, so as to ensure that the push ring will subsequently stably fit with the bottom surface of the right-angle connecting section.

[0016] Optionally, the plug includes:

[0017] The end head has an upper end which is slidably mounted in the hopper along the through hole, and a peripheral side of the upper end is slidably fitted with an inner peripheral wall of the hopper;

[0018] A limiting ring is arranged outside the drop hopper, and the limiting ring is fixed on the outer peripheral side of the lower end of the end head.

[0019] By adopting the above technical solution, the driving component drives the end head to slide along the inner wall of the perforation, so that the upper end peripheral side of the end head blocks the discharge hole on the inner peripheral wall of the hopper, thereby stopping the discharge of the hopper; when the top wall of the limit ring abuts against the lower end face of the hopper, the end head is difficult to rise again under the limitation of the limit ring, thereby achieving the state of the end head being in a stable state of blocking the discharge hole.

[0020] Optionally, an elastic telescopic part is provided on the frame, and the elastic telescopic part includes a rod portion and a sleeve portion slidably sleeved on the outer peripheral side of the rod portion, and the end of the sleeve portion away from the rod portion is fixedly connected to the bottom of the end head, and the end of the rod portion away from the sleeve portion is driven by the driving assembly, and a compression spring is sleeved on the rod portion, and one end of the compression spring is fixedly connected to the sleeve portion, and the other end is fixedly connected to the rod portion.

[0021] By adopting the above technical solution, an elastic telescopic part is provided so that the driving component can push the end head smoothly into the drop hopper to achieve smooth closure of the discharge hole; when the limiting ring on the end head abuts against the lower end of the drop hopper, under the continuous drive of the driving component, the compressed elastic telescopic rod applies a continuously increasing thrust to the end head, thereby continuously sealing and supporting the gradually increasing mixture in the drop hopper.

[0022] Optionally, a plurality of mounting grooves are provided on the circumferential side of one end of the rod portion away from the sleeve portion, and the driving structure includes a slider slidably installed in the mounting groove, the sliding direction of the slider is parallel to the sliding direction of the end head, and a connecting rod is provided between the slider and the push ring for fixedly connecting the two; when the end head does not block the discharge hole, a sliding gap is left between the bottom wall of the slider and the inner bottom wall of the mounting groove.

[0023] By adopting the above technical solution, after the end head completes the sealing of the discharge hole, the rod continues to move toward the end head under the continuous push of the driving component. During the movement, the mixture in the hopper undergoes material separation under the action of centrifugal force, and the drill cuttings in the mixture roll to the right-angle connection section under the action of centrifugal force; then the continuously moving rod moves to the bottom wall of the installation groove and fits the inner bottom wall of the slider, and then the continuously moving rod pushes the slider through the bottom wall of the installation groove to achieve synchronous sliding of the rod and the slider. At this time, the slider drives the push ring to rise through the connecting rod, so that the push ring can push the drill cuttings at the inner wall of the right-angle connection section to the inner wall of the second outer inclined section.

[0024] Optionally, the driving component includes:

[0025] an incomplete gear, the incomplete gear being rotatably disposed on the frame;

[0026] An inner gear ring, the inner gear ring is slidably mounted on the frame along the sliding direction of the end head, the inner gear ring is sleeved on the circumference of the incomplete gear, the inner gear ring includes a rack portion for the incomplete gear to rotate and mesh in sequence, and a connecting portion connecting the two rack portions, the connecting portion being fixed to the fixed end of the elastic telescopic rod;

[0027] A rotating power member is fixed on the frame, and a driving end of the rotating power member is fixedly connected to the center of the end surface of the incomplete gear.

[0028] By adopting the above technical solution, the driving end of the rotating power part drives the incomplete gear to rotate, and then the rotating incomplete gear engages with the two rack parts one by one; in the process of the incomplete gear engaging with the two rack parts in sequence, the rotating incomplete gear pushes the inner gear ring to reciprocate along the sliding direction of the end head through the engagement of the two rack parts, thereby realizing the sequential replacement of the end head to block and open the discharge hole, thereby realizing intermittent discharge of the discharge hopper.

[0029] Optionally, a connecting rod is fixedly provided on the outer peripheral side of one end of the rod away from the compression spring, and a cutting knife for cutting the raw material on the inner wall of the first outer inclined section is fixedly provided on the one end of the connecting rod away from the limiting ring.

[0030] By adopting the above technical solution, during the process of conveying the cuttings to the separation barrel, the cuttings and drilling fluid are easily mixed by the rotation of the screw conveyor blades, so that part of the drilling fluid is mixed inside the cuttings; and a cutting knife is provided to cut the cuttings and other raw materials on the inner wall of the first outer inclined section to crush the cuttings so that the cuttings can be quickly separated from the water wrapped inside.

[0031] Optionally, a support rod is fixedly provided on the outer periphery of the limiting ring, and a protective bucket is fixedly provided on the end of the support rod away from the rod portion, and a through groove is provided on the inner wall of the protective bucket for the cutting knife to pass through; when the end head does not block the discharge hole, the cutting knife slides and fits with the inner wall of the through groove on the peripheral side of the end away from the inner wall of the first outer inclined section.

[0032] By adopting the above technical solution, in the process of the driving component driving the end head to rise through the elastic telescopic part, the cutting knife and the protective bucket rise synchronously, and when the end head is in a positioned state under the limit of the limit ring, the protective bucket stops moving, and then the driving component continues to drive the rod in the elastic telescopic part to rise, so that the cutting knife rises again, thereby realizing the rise of the blade of the cutting knife and passing through the through groove on the protective bucket, so as to peel off the drill chips adhered to the cutting knife through the inner wall of the through groove.

[0033] Optionally, a guide hopper is fixedly provided on the frame for receiving the raw materials discharged from the discharge hole, a gap is left between the bottom wall of the guide hopper and the bottom wall of the separation barrel, and the lower end opening of the guide hopper faces the center of the bottom surface of the separation barrel.

[0034] By adopting the above technical solution, a guide hopper is set to guide the raw materials entering the separation barrel, so that the raw materials flow to the center of the bottom surface of the separation barrel under the guidance of the inner wall of the guide hopper, so that the raw materials will be centrifuged along the direction from the center of the bottom surface of the separation barrel to the inner circumferential wall of the separation barrel, so as to increase the separation stroke of the raw materials in the separation barrel, thereby making full use of the internal space of the separation barrel to fully separate the rock cuttings and drilling fluid.

[0035] Optionally, a plurality of inclined guide plates are fixedly provided on the side wall of the guide hopper at one end away from the first outer inclined section.

[0036] By adopting the above technical solution, an inclined guide plate is set to peel, layer and guide the thicker mixture, so that the mixture is transferred to the bottom center of the separation barrel in a thinner and more uniform form, so that the mixed liquid can be separated more fully.

[0037] In summary, this application includes at least one of the following beneficial technical effects:

[0038] 1. The centrifuged mixture rolls in the direction from the first outer inclined section to the right-angled connecting section, so that the water adhering to the surface of the drill cuttings in the mixture is separated from the drill cuttings under the action of centrifugal force. Then, the drill cuttings are cut by the cutter on the surface of the push ring, so that the drill cuttings are cut by the cutter, thereby exposing the water entrained in the drill cuttings to the surface of the cut drill cuttings, so that the water is discharged along the drainage hole under the action of centrifugal force. Then, the driving structure drives the push ring upward, and the push ring pushes the drill cuttings abutting the surface of the right-angled connecting section to the surface of the second outer inclined section, so that the drill cuttings on the surface of the second outer inclined section are thrown out from the surface of the second outer inclined section under the action of centrifugal force, thereby achieving effective separation of the rock cuttings from the surface water and the rock cuttings from the internal entrained water, thereby achieving efficient dehydration of the drill cuttings.

[0039] 2. The drive assembly drives the plug to move so that the plug blocks the discharge hole, thereby ensuring that when the drive structure drives the push ring to rise, no remaining drill cuttings will centrifugally roll down along the first outer inclined section to the bottom wall of the push ring, thereby ensuring that the push ring subsequently fits stably with the bottom surface of the right-angle connection section;

[0040] 3. When the device is in operation, the plug first blocks the discharge hole, and then the cutter body of the cutter rises and passes through the groove on the protective bucket to peel off the drill cuttings adhering to the cutter. Then the driving structure drives the push ring to push the drill cuttings accumulated in the right-angle connection section to the second outer inclined section, so that the drill cuttings can be centrifugally thrown out of the separation barrel on the inclined inner wall of the second outer inclined section. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is a schematic diagram of the system principle of an embodiment of the present application;

[0042] Figure 2 This is a schematic diagram of the overall structure of the drying unit in the embodiment of the present application;

[0043] Figure 3 Schematic diagram of the cross-sectional structure of the drying unit in the embodiment of the present application;

[0044] Figure 4 It is a structural diagram of the drop hopper and the guide hopper;

[0045] Figure 5 It is a cross-sectional structural diagram showing the internal structure of the separation barrel;

[0046] Figure 6 yes Figure 3 A magnified schematic diagram of part A;

[0047] Figure 7 yes Figure 3 Schematic diagram of the enlarged portion B.

[0048] Reference numerals: 11, screening unit; 111, vibrating screen; 112, receiving hopper; 12, conveying unit; 121, screw conveyor; 13, buffer unit; 131, collecting bin; 132, cuttings box; 133, liquid phase storage tank; 14, drying unit; 15, re-filtration unit; 151, sand pump; 152, high-speed centrifuge; 2, frame; 21, solid phase collection barrel; 22, liquid phase collection barrel; 23, guide hopper; 231, inclined guide plate; 24, drop hopper; 241, discharge hole; 25, push ring; 26, cutter; 3, separation barrel; 31, first outer Oblique section; 32. Right-angle connecting section; 33. Second outer oblique section; 34. Drain hole; 5. Plug; 51. End; 52. Limiting ring; 6. Drive assembly; 61. Incomplete gear; 62. Inner ring; 621. Rack portion; 622. Connecting portion; 64. Guide bar; 7. Elastic telescopic rod; 71. Rod portion; 711. Upper column; 712. Lower column; 713. Mounting groove; 72. Sleeve portion; 73. Compression spring; 8. Slider; 81. Connecting rod; 9. Connecting rod; 91. Cutting knife; 10. Support rod; 101. Protective bucket; 102. Through groove. DETAILED DESCRIPTION

[0049] The following is combined with Figure 1-7 This application is described in further detail.

[0050] The present application discloses a drilling mud cuttings processing system. Figure 1 The drilling mud and cuttings processing system includes a screening unit 11, a conveying unit 12, a buffer unit 13, and a drying unit 14. The screening unit 11 includes multiple vibrating screens 111 and a receiving hopper 112 connected below the vibrating screen 111 for receiving solid-phase raw materials. The buffer unit 13 includes a collecting bin 131, a cuttings box 132, and a liquid phase storage tank 133. The conveying unit 12 includes multiple screw conveyors 121 connected in sequence between the vibrating screen 111 and the collecting bin 131, between the collecting bin 131 and the drying unit 14, between the drying unit 14 and the cuttings box 132, and between the drying unit 14 and the liquid phase storage tank 133. During use, the raw materials are first screened by the vibrating screen 111 for preliminary solid-liquid separation and screening, and then the water-containing solid phase raw materials are accumulated in the collection bin 131. Then, the screw conveyor 121 transports the precipitated solid phase raw materials settled at the bottom of the collection bin 131 to the drying unit 14, and the solid phase is dehydrated and dried by the drying unit 14 to achieve solid-liquid separation of the drill cuttings and drilling fluid in the raw materials.

[0051] In order to achieve sufficient dehydration of the rock cuttings by the drying unit 14, refer to Figure 2 and Figure 3The drying unit 14 includes a frame 2, on which a solid phase collection barrel 21 and a liquid phase collection barrel 22 fixedly arranged inside the solid phase collection barrel 21 are provided. A separation barrel 3 is rotatably arranged in the liquid phase collection barrel 22, and a high-speed drive motor for driving the separation barrel 3 to rotate is provided in the liquid phase collection barrel 22.

[0052] Reference Figure 1 In order to separate and filter the liquid raw materials in the liquid collection barrel 22 again to separate and process the particulate impurities in the liquid raw materials, a re-filtration unit 15 is provided on one side of the frame 2. The re-filtration unit 15 includes a sand pump 151 and a high-speed centrifuge 152 provided on the liquid storage tank 133. The liquid storage tank 133 and the liquid collection barrel 22 are connected by a conveying pipe. The feed end of the sand pump 151 is connected to the bottom of the inner cavity of the liquid storage tank 133 through a conveying pipe. The discharge end of the sand pump 151 is connected to the feed end of the high-speed centrifuge 152 through a conveying pipe. The solid phase discharge end of the high-speed centrifuge 152 is connected to the cuttings box 132, and the liquid phase discharge end is connected to the inner cavity at the upper end of the liquid storage tank 133.

[0053] In order to make the raw materials fall into the separation barrel 3 stably, refer to Figure 3 and Figure 4 A hopper 24 is fixedly mounted on the frame 2 above the separation barrel 3. A plurality of discharge holes 241 are formed on the peripheral wall of the hopper 24. The openings of the discharge holes 241 are inclined downward from the inner wall to the outer wall of the hopper 24. A perforation is formed at the bottom of the hopper 24. A guide hopper 23 is fixedly mounted on the frame 2 on the outer periphery of the hopper 24. The openings of the discharge holes 241 face the inner periphery of the guide hopper 23, allowing the guide hopper 23 to receive raw materials such as rock cuttings and drilling fluid discharged from the discharge holes 241. There is a gap between the bottom wall of the guide hopper 23 and the inner bottom wall of the separation barrel 3. The lower end opening of the guide hopper 23 faces the center of the bottom surface of the separation barrel 3. A number of inclined guide plates 231 are integrally formed on the side wall of the guide hopper 23 away from the separation barrel 3. The thickness of the several inclined guide plates 231 is between 2mm and 10mm. The extension direction of the inclined guide plate 231 intersects with the busbar of the guide hopper 23, so that the raw materials flowing through the inner wall of the guide hopper 23 are divided by the inclined guide plate 231, so that the thicker raw material section is divided into upper and lower sections under the separation of the upper end surface and the side wall of the inclined guide plate 231.

[0054] Reference Figure 3 and Figure 5The wall of the separation barrel 3 comprises, from bottom to top, a first outwardly inclined section 31, a right-angled connecting section 32, and a second outwardly inclined section 33, which are connected in sequence. The top of the second outwardly inclined section 33 is lower than the upper end of the solid phase collection barrel 21. The inner diameters of the upper ends of the first and second outwardly inclined sections 31, 33 are both smaller than the inner diameters of the lower ends. The right-angled connecting section 32 has an L-shaped vertical cross-section, with the upper vertical side of the right-angled connecting section 32 integrally formed with the bottom end of the second outwardly inclined section 33, and the lower horizontal side of the right-angled connecting section 32 integrally formed with the upper end of the first outwardly inclined section 31.

[0055] Reference Figure 5 To ensure effective solid-liquid separation in separation barrel 3, multiple drainage holes 34 are provided on the inner circumferences of the first outwardly inclined section 31, the right-angled connecting section 32, and the second outwardly inclined section 33. A push ring 25 is installed on frame 2 within separation barrel 3. The bottom surface of push ring 25 detachably engages the inner bottom surface of the lower horizontal side of the right-angled connecting section 32. Several cutters 26 for cutting drill cuttings are welded to the upper end surface of push ring 25 at regular intervals along its inner circumference. A drive mechanism is also provided on frame 2 for driving push ring 25 to reciprocate in a direction toward or away from the second outwardly inclined section 33.

[0056] During use, the adhering water on the surface of the drill cuttings is separated from the drill cuttings by centrifugal force, and then the adhering water is discharged into the liquid phase collection bucket 22 along the drainage hole 34. Then, under the continuous centrifugal action, the drill cuttings with surface dehydration roll to the right-angle connecting section 32 under the action of centrifugal force for accumulation. In this process, the drill cuttings are cut by the cutter 26 on the surface of the push ring 25, so that the drill cuttings are cut open by the cutter 26, so that the water entrained in the drill cuttings is exposed to the surface of the drill cuttings at the cut opening. Then the driving structure drives the push ring 25 to rise, and the push ring 25 pushes the drill cuttings against the surface of the right-angle connecting section 32 to the surface of the second outer inclined section 33. Then, the drill cuttings on the surface of the second outer inclined section 33 are thrown out from the surface of the second outer inclined section 33 to the solid phase collection bucket 21 under the action of centrifugal force, thereby realizing effective separation of the rock cuttings from the surface-adherent water and the rock cuttings from the internal entrained water, thereby realizing efficient dehydration of the drill cuttings.

[0057] Reference Figure 5 To ensure that when the drive structure drives the push ring 25 upward, no additional drilling cuttings will centrifugally roll down the first outer inclined section 31 to the bottom wall of the push ring 25, thereby ensuring that the push ring 25 subsequently maintains stable contact with the bottom surface of the right-angled connecting section 32. The frame 2 is also equipped with an intermittent blocking mechanism for intermittently blocking the discharge hole 241 of the hopper 24. The intermittent blocking mechanism includes a plug 5 and a drive assembly 6 disposed on the frame 2 and configured to detachably block the plug 5 and the discharge hole 241.

[0058] In this embodiment, the plug 5 includes an end cap 51 and a retaining ring 52. The upper end of the end cap 51 is tapered and is vertically slidably mounted within the hopper 24 along the opening direction of the perforation, with the circumference of the upper end slidably engaged with the inner circumferential wall of the hopper 24. The retaining ring 52 is disposed outside the hopper 24 and is fixedly mounted around the lower end of the end cap 51. The upper end surface of the retaining ring 52 detachably contacts the lower end surface of the hopper 24.

[0059] Reference Figure 6 The drive assembly 6 includes an incomplete gear 61, an inner ring gear 62, and a rotating power member (not shown). The incomplete gear 61 is rotatably mounted on the frame 2, and the inner ring gear 62 is slidably mounted on the frame 2 along the height direction. The inner ring gear 62 includes two rack portions 621 that the incomplete gear 61 sequentially rotates and meshes with, and a connecting portion 622 that connects the two rack portions 621. The two connecting portions 622 and the two rack portions 621 together form a ring shape. The rotating power member is fixedly mounted on the frame 2, and the driving end of the rotating power member is fixedly connected to the center of the end face of the incomplete gear 61.

[0060] To ensure stable lifting and lowering movement of the inner gear ring 62, vertical guide strips 64 are symmetrically arranged on a set of opposite sides of the inner gear ring 62 on the frame 2. The outer wall of the inner gear ring 62 fits with the guide strips 64 so that the inner gear ring 62 can slide directionally on the surface of the guide strips 64.

[0061] During use, the driving end of the rotating power part drives the incomplete gear 61 to rotate, and then the rotating incomplete gear 61 engages with the two rack parts 621 one by one; and the rotating incomplete gear 61 pushes the inner gear ring 62 to reciprocate along the sliding direction of the end head 51 by engaging with the two rack parts 621 in sequence.

[0062] In other embodiments, the drive assembly 6 can also be configured as a reciprocating drive component such as a reciprocating telescopic oil hydraulic rod, a pneumatic telescopic rod, etc.; considering that the internal space of the separation barrel 3 is limited, and the reciprocating telescopic oil hydraulic rod needs to be equipped with an oil hydraulic cylinder, the pneumatic telescopic rod requires an external air pump and other components, and the reciprocating speed of this type of reciprocating drive component is relatively fast, for this reason, the drive assembly 6 in the present application preferably includes the above-mentioned incomplete gear 61, the inner ring gear 62 and the rotating power component.

[0063] Reference Figure 7To ensure stable push and pull motion of the drive assembly 6 against the end piece 51, an elastic telescopic rod 7 is provided at the upper connection portion 622. The elastic telescopic rod 7 comprises a rod portion 71 and a sleeve portion 72 that slides around the outer periphery of the rod portion 71. The end of the sleeve portion 72, distal from the rod portion 71, is fixedly connected to the bottom of the end piece 51. The end of the rod portion 71, distal from the sleeve portion 72, is welded to the upper connection portion 622. The rod portion 71 comprises an upper column 711 and a lower column 712, which are integrally formed with each other. The upper column 711 is positioned above the lower column 712, and the diameter of the upper column 711 is smaller than that of the lower column 712. The upper end of the upper column 711 is slidably engaged with the inner circumferential wall of the sleeve portion 72. The lower end of the upper column 711 is sheathed with a compression spring 73. The upper end of the compression spring 73 is fixedly connected to the lower end surface of the plug 5, and the lower end is fixedly connected to the upper end surface of the lower column 712. The outer peripheral side of the upper column 711 is provided with a flexible protective cover for protecting the compression spring 73. The flexible protective cover can be an accordion protective cover, a flexible bellows, etc.

[0064] Reference Figure 3 and Figure 5 To achieve reciprocating lifting and lowering of the push ring 25 within the separation barrel 3, so that the push ring 25 can push drill cuttings accumulated on the inner wall of the right-angled connecting section 32 into the second outer inclined section 33, a plurality of mounting slots 713 are evenly spaced around the circumference of the lower column 712. The extending direction of each mounting slot 713 is consistent with the height direction of the lower column 712, and each mounting slot 713 is a dovetail slot. The drive structure includes sliders 8 corresponding to the plurality of mounting slots 713. The sliders 8 are slidably installed in the corresponding mounting slots 713 along the opening direction of the mounting slots 713. A connecting rod 81 is provided between the sliders 8 and the push ring 25 to securely connect the two.

[0065] When the end head 51 does not block the discharge hole 241, a sliding gap is left between the bottom surface of the slider 8 and the inner bottom wall of the installation groove 713. After the end head 51 completes the blocking of the discharge hole 241, the rod 71 continues to move toward the end head 51 under the continuous push of the drive assembly 6. During the movement, the mixed material in the hopper 24 undergoes material separation under the action of centrifugal force, and the drill cuttings in the mixed material roll to the right-angle connection section 32 under the action of centrifugal force. Then, the rod 71 continues to move upward and gradually moves until the inner bottom wall of the installation groove 713 fits the inner bottom wall of the slider 8. Then, the continuously moving rod 71 pushes the slider 8 through the inner bottom wall of the installation groove 713 to achieve synchronous sliding of the rod 71 and the slider 8. At this time, the slider 8 drives the push ring 25 to rise through the connecting rod 81, so that the push ring 25 can push the drill cuttings on the inner wall of the right-angle connection section 32 to the inner wall of the second outer inclined section 33.

[0066] Reference Figure 3To further improve the splitting effect of the rock cuttings entering the separation barrel 3, a connecting rod 9 is fixedly installed on the outer circumference of the end of the rod portion 71 away from the compression spring 73. The end of the connecting rod 9 away from the limiting ring 52 is fixedly installed with a splitting knife 91 for cutting the raw material on the inner wall of the first outer oblique section 31. The outer circumference of the limiting ring 52 is connected to a support rod 10. The end of the support rod 10 away from the rod portion 71 is fixedly installed with a protective bucket 101. The inner wall of the protective bucket 101 is provided with a through-groove 102 for the splitting knife 91 to penetrate. When the end head 51 does not block the discharge hole 241, the splitting knife 91 slides and fits against the inner circumferential wall of the through-groove 102 on the circumference of the end away from the inner wall of the first outer oblique section 31.

[0067] In the process of the driving component 6 driving the end head 51 to rise through the elastic telescopic rod 7, the cutting knife 91 and the protective bucket 101 rise synchronously; then when the end head 51 is in a positioned static state under the limit of the limiting ring 52, the protective bucket 101 stops moving, and then the driving component 6 continues to drive the rod part 71 in the elastic telescopic rod 7 to rise, so that the cutting knife 91 rises again, thereby realizing the blade of the cutting knife 91 rising and passing through the through groove 102 on the protective bucket 101, so as to peel off the drill cuttings adhered to the cutting knife 91 through the inner wall of the through groove 102.

[0068] The implementation principle of a drilling mud and drill cuttings processing system in an embodiment of the present application is: when in use, the vibrating screen 111 screens the raw materials, and then the screw conveyor 121 conveys the screened solid-phase raw materials to the collecting bin 131 for sedimentation and standing, and then the solid-phase raw materials precipitated at the bottom of the collecting bin 131 are conveyed to the drop hopper 24 through a screw conveyor 121, and then the raw materials fall into the bottom of the separation barrel 3 along the drop hopper 24.

[0069] Under the centrifugal force of the rotating separation barrel 3, the centrifuged mixture rolls in the direction from the first outer inclined section 31 to the right-angle connecting section 32, so that the water adhering to the surface of the drill cuttings in the mixture is separated from the drill cuttings under the action of centrifugal force, so that the separated drilling fluid is concentrated and stored in the liquid phase collection barrel 22. Then the drill cuttings are cut once by the cutting knife 91 and cut twice by the cutting knife 26, so that the moisture entrained in the drill cuttings is exposed to the surface of the drill cuttings at the cut opening, so that the moisture is discharged along the drainage hole 34 under the action of centrifugal force, so that the dehydrated drill cuttings are pressed against the vertical surface of the right-angle connecting section 32 under the action of centrifugal force, and then the driving component 6 drives the plug 5 to rise, so as to seal the discharge hole 241 of the drop hopper 24 through the plug 5; then the continuously running driving component 6 drives the push ring 25 to rise through the driving structure, and the push ring 25 pushes the drill cuttings pressed against the surface of the right-angle connecting section 32 to the surface of the second outer inclined section 33, so that the drill cuttings located on the surface of the second outer inclined section 33 are thrown out from the surface of the second outer inclined section 33 to the solid phase collection bucket 21 under the action of centrifugal force, thereby realizing effective separation of rock cuttings from surface attached water and rock cuttings from internal entrained water, thereby realizing efficient dehydration of the drill cuttings.

[0070] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A drilling mud and cuttings processing system, comprising a screening unit (11), a conveying unit (12), a drying unit (14) and a buffer unit (13), characterized in that: The drying unit (14) comprises a frame (2), and the frame (2) is provided with: A separation barrel (3), the separation barrel (3) being rotatably mounted on the frame (2), the barrel wall of the separation barrel (3) comprising, from bottom to top, a first outer oblique section (31), a right-angle connecting section (32), and a second outer oblique section (33) connected in sequence, the inner circumferential walls of the first outer oblique section (31), the right-angle connecting section (32), and the second outer oblique section (33) all being provided with a plurality of drainage holes (34); A drop hopper (24), the drop hopper (24) is arranged above the separation barrel (3) and is used to collect the mixed material transferred to the drying unit (14), a plurality of discharge holes (241) are opened on the peripheral wall of the drop hopper (24), and a perforation is opened on the bottom of the drop hopper (24); An intermittent blocking mechanism, used for intermittently blocking the discharge hole (241) of the drop hopper (24); A push ring (25) is located in the separation barrel (3), and the bottom surface of the push ring (25) is detachably attached to the bottom surface of the right-angle connection section (32). A plurality of cutters (26) are fixedly provided at intervals on the upper end surface of the push ring (25); The driving structure is used to drive the push ring (25) to move back and forth in a direction approaching or away from the second outer oblique section (33).

2. The drilling mud and cuttings processing system according to claim 1, characterized in that: The intermittent blocking mechanism comprises a plug (5) and a driving assembly (6) arranged on the frame (2) and used to drive the plug (5) to detachably block the discharge hole (241).

3. The drilling mud and cuttings processing system according to claim 2, characterized in that: The plug (5) comprises: An end head (51), the upper end of which is slidably mounted in the hopper (24) along the opening direction of the through hole, and the circumference of the upper end is slidably fitted with the inner circumferential wall of the hopper (24); A limiting ring (52) is arranged outside the drop hopper (24), and the limiting ring (52) is fixed to the outer peripheral side of the lower end of the end head (51).

4. The drilling mud and cuttings processing system according to claim 3, characterized in that: An elastic telescopic rod (7) is provided on the frame (2), and the elastic telescopic rod (7) comprises a rod portion (71) and a sleeve portion (72) slidably sleeved on the outer peripheral side of the rod portion (71), one end of the sleeve portion (72) away from the rod portion (71) is fixedly connected to the bottom of the end head (51), and the end of the rod portion (71) away from the sleeve portion (72) is driven by the driving assembly (6), and a compression spring (73) is sleeved on the rod portion (71), one end of the compression spring (73) is fixedly connected to the bottom of the end head (51), and the other end is fixedly connected to the rod portion (71).

5. The drilling mud and cuttings processing system according to claim 4, characterized in that: A plurality of mounting grooves (713) are provided on the circumferential side of one end of the rod portion (71) away from the sleeve portion (72), and the driving structure includes a slider (8) slidably mounted in the mounting groove (713), the sliding direction of the slider (8) being parallel to the sliding direction of the end head (51), and a connecting rod (81) for fixedly connecting the slider (8) and the push ring (25) is provided between the slider (8) and the push ring (25); when the end head (51) does not block the discharge hole (241), a sliding gap is left between the bottom surface of the slider (8) and the inner bottom wall of the mounting groove (713).

6. The drilling mud and cuttings processing system according to claim 4, characterized in that: The driving assembly (6) comprises: An incomplete gear (61), the incomplete gear (61) being rotatably mounted on the frame (2); An inner gear ring (62), the inner gear ring (62) is slidably mounted on the frame (2) along the sliding direction of the end head (51), the inner gear ring (62) is sleeved on the circumference of the incomplete gear (61), the inner gear ring (62) includes a rack portion (621) for the incomplete gear (61) to rotate and mesh in sequence, and a connecting portion (622) connecting the two rack portions (621), the connecting portion (622) being fixed to the fixed end of the elastic telescopic rod (7); A rotating power member is fixedly mounted on the frame (2), and a driving end of the rotating power member is fixedly connected to the center of the end face of the incomplete gear (61).

7. The drilling mud and cuttings processing system according to claim 4, characterized in that: A connecting rod (9) is fixedly provided on the outer peripheral side of one end of the rod portion (71) away from the compression spring (73), and a cutting knife (91) for cutting the raw material on the inner wall of the first outer oblique section (31) is fixedly provided on one end of the connecting rod (9) away from the limiting ring (52).

8. The drilling mud and cuttings processing system according to claim 7, characterized in that: A support rod (10) is fixedly provided on the outer periphery of the limiting ring (52), and a protective bucket (101) is fixedly provided on the end of the support rod (10) away from the rod portion (71), and a through groove (102) for the cutting knife (91) to pass through is opened on the inner wall of the protective bucket (101); when the end head (51) does not block the discharge hole (241), the side of the end of the cutting knife (91) away from the inner wall of the first outer inclined section (31) slides and fits with the inner wall of the through groove (102).

9. The drilling mud and cuttings processing system according to claim 1, characterized in that: A guide hopper (23) is fixedly provided on the frame (2) for receiving the raw materials discharged from the discharge hole (241), a gap being left between the bottom wall of the guide hopper (23) and the inner bottom wall of the separation barrel (3), and the lower end opening of the guide hopper (23) faces the center of the bottom surface of the separation barrel (3).

10. The drilling mud and cuttings processing system according to claim 9, characterized in that: A plurality of inclined guide plates (231) are fixedly provided on a side wall of one end of the guide hopper (23) away from the first outer inclined section (31).

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