A harmless treatment device for drill cuttings

Abstract

The application discloses a harmless treatment device for drill cuttings, and relates to the technical field of drill cuttings treatment, which comprises a box body, a supporting plate and a filter cartridge, the supporting plate is installed on the upper inside position of the box body, the filter cartridge is rotationally connected to the supporting plate, and filtering holes for water passing through are uniformly arranged on the filter cartridge, a spiral conveying shaft is rotationally connected in the filter cartridge, and the middle part of the spiral conveying shaft is in a conical structure, a first driving assembly for driving the filter cartridge to rotate is installed on the supporting plate, and a second driving assembly for driving the spiral conveying shaft to rotate is also installed on the supporting plate, the application combines the two modes of centrifugal dewatering of drill cuttings through the rotation of the filter cartridge and extrusion dewatering of drill cuttings through the cooperation of the conical spiral conveying shaft, improves the efficiency and effect of the dewatering treatment of drill cuttings, and through the setting of a pressing ring assembly, the pressure of drill cuttings conveying is utilized to extrude and dewater the drill cuttings again, so that the dewatering of the drill cuttings is more thorough, and the quality of the dewatering treatment of the drill cuttings is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of drilling sludge treatment, and particularly relates to a harmless drilling sludge treatment device. BACKGROUND

[0002] The cast-in-place bored pile is formed by means of mechanical drilling, steel pipe soil extrusion or manpower excavation to form a pile hole in the ground, and a reinforcement cage is placed in the pile hole and concrete is poured to form the pile. A large amount of mud slurry is generated during the drilling construction process. In order to protect the environment and avoid waste of land resources, the drilling slurry is usually recycled by means of filtration and dehydration. At present, the drilling slurry is usually dehydrated and recovered by means of centrifugal filtration. However, it is difficult to completely dry the drilling slurry by means of centrifugal dehydration alone, and the drilling slurry needs to be subjected to secondary dehydration treatment, which is relatively complicated to operate, and the efficiency of the drilling slurry treatment is low. In addition, the drilling slurry is easy to adhere to the inner wall of the container after being subjected to pressure, and it is difficult to unload the slurry. Usually, the slurry needs to be manually scooped out, and it is inconvenient to unload the slurry. Therefore, a harmless drilling slurry treatment device is needed to solve the above problems. SUMMARY

[0003] The present application aims to provide a harmless drilling slurry treatment device to solve the problems existing in the prior art as described in the background.

[0004] To achieve the above-mentioned purpose, the present application provides the following technical scheme:

[0005] A harmless drilling slurry treatment device comprises a box body, a support plate and a filter cartridge. The support plate is installed on the upper side of the inside of the box body. The filter cartridge is rotatably connected to the support plate, and the filter cartridge is uniformly provided with filter holes for water to pass through. A spiral conveying shaft is rotatably connected in the filter cartridge, and the middle part of the spiral conveying shaft is in a conical structure. A first driving assembly for driving the filter cartridge to rotate is installed on the support plate. A second driving assembly for driving the spiral conveying shaft to rotate is also installed on the support plate. A support ring frame is connected to the lower side of the inside of the box body, and the filter cartridge is rotatably connected to the support ring frame. A pressure ring assembly for extruding and filtering water from the drilling slurry is arranged on the lower side of the filter cartridge. An unloading assembly for unloading the filter residue is installed on the support ring frame. A third driving assembly for driving the unloading assembly to unload the residue is also installed on the support ring frame.

[0006] Preferably, the first driving assembly comprises a driven gear, a first bracket and a first motor. The driven gear is keyed to the rotating shaft of the filter cartridge. The first motor is installed on the support plate through the first bracket. The output end of the first motor is keyed to a driving gear which is engaged with the driven gear.

[0007] Preferably, the second driving assembly comprises a driven friction wheel, a second support and a second motor, the driven friction wheel is connected to the screw conveying shaft by a key, the second support is slidingly connected to the supporting plate, and the second motor is installed on the second support, and the output end of the second motor is connected with a driving friction wheel by a key.

[0008] Preferably, the pressing ring assembly comprises a sliding frame, a ring body and a bottom cover, the sliding frame is connected to the inner wall of the box body, the ring body is installed on the sliding frame, and the bottom cover is slidingly connected to the sliding frame, and a cylinder for driving the bottom cover to slide to control the opening and closing of the bottom of the ring body is installed on the box body.

[0009] Preferably, the slag discharging assembly comprises a sliding block, a sleeve and a push plate, the sliding block is slidingly connected to the lower end surface of the supporting ring frame, the sleeve is connected to the sliding block, the push plate is slidingly connected to the sleeve through a column, a tension spring is connected between the push plate and the sleeve, a driving column is connected to the push plate, and the lower end surface of the supporting ring frame is provided with a driving block for pressing the driving column downward.

[0010] Preferably, the third driving assembly comprises a reversing gear, a connecting frame and a first rack, the reversing gear is rotatably connected to the supporting ring frame through a support, the connecting frame is slidingly connected to the supporting ring frame and connected with the sliding block, the connecting frame is connected with the first rack which is engaged with the reversing gear, the bottom cover is connected with a driving frame, and the driving frame is connected with the second rack which is engaged with the reversing gear.

[0011] Preferably, the driving frame and the second support are connected through a synchronous frame.

[0012] Preferably, the lower side of the pressing ring assembly is provided with a slag discharging pipeline, and the lower side of the box body is provided with a water outlet.

[0013] Compared with the prior art, the present application has the following advantages:

[0014] 1. The present application combines the two ways of drilling slag centrifugal dewatering by rotating the filter cartridge and extruding dewatering by the cooperation of the conical screw conveying shaft, thereby improving the efficiency and effect of drilling slag dewatering treatment, and the pressure of drilling slag conveying is used to extrude the drilling slag again by the setting of the pressing ring assembly, so that the drilling slag dewatering is more thorough, and the quality of drilling slag dewatering treatment is improved.

[0015] 2. The setting of the slag discharging assembly and the third driving assembly can automatically discharge the compacted drilling slag in the ring body and synchronously control the rotating state of the screw conveying shaft, so as to avoid the direct discharging of the drilling slag which has not been extruded and dewatered in the ring body, thereby ensuring the reliability of drilling slag dewatering treatment. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1It is the schematic diagram of the overall structure of the present application.

[0017] Figure 2 It is the schematic diagram of the internal structure of the box of the present application.

[0018] Figure 3 It is the schematic diagram of the cross-sectional structure of the filter cartridge of the present application.

[0019] Figure 4 It is the schematic diagram of the installation position of the compression ring assembly and the residue discharging assembly of the present application.

[0020] Figure 5 It is the schematic diagram of the partial enlargement structure at A of the present application. Figure 4

[0021] Figure 6 It is the schematic diagram of the bottom structure of the compression ring assembly of the present application.

[0022] Figure 7 It is the schematic diagram of the partial enlargement structure at B of the present application. Figure 6

[0023] Figure 8 It is the schematic diagram of the structure of the third driving assembly of the present application.

[0024] Figure 9 It is the schematic diagram of the structure of the residue discharging assembly of the present application.

[0025] In the figure: 1, box; 2, support plate; 3, filter cartridge; 4, spiral conveying shaft; 5, first driving assembly; 51, driven gear; 52, first support; 53, first motor; 54, driving gear; 6, second driving assembly; 61, driven friction wheel; 62, second support; 63, second motor; 64, driving friction wheel; 7, support ring frame; 8, compression ring assembly; 81, sliding frame; 82, ring body; 83, bottom cover; 84, air cylinder; 9, residue discharging assembly; 91, sliding block; 92, sleeve; 93, push plate; 94, tension spring; 95, driving column; 96, driving block; 10, third driving assembly; 101, reversing gear; 102, connecting frame; 103, first rack; 104, driving frame; 105, second rack; 11, synchronization frame; 12, residue discharging pipeline; 13, water outlet. DETAILED DESCRIPTION

[0026] In order to make the technical means, creative features, purposes and effects realized by the present application easy to understand, the present application is further described below in combination with specific embodiments.

[0027] Please refer to Figures 1-9 The present application provides a technical solution:

[0028] ​​The utility model provides a kind of harmless treatment device of drill cuttings, including box 1, support plate 2 and filter cartridge 3, the support plate 2 is installed on the inside upper side position of box 1, the filter cartridge 3 is rotatably connected on support plate 2, and filter cartridge 3 is evenly provided with the filter hole for water passing, screw conveyor shaft 4 is rotatably connected in the filter cartridge 3, and the middle part of screw conveyor shaft 4 is conical structure, the conical top of screw conveyor shaft 4 is towards upper side, the structure can be arranged to make the volume of drill cuttings gradually extruded smaller in the process of being conveyed downwards, to facilitate the moisture in drill cuttings extruded, improve the effect of drill cuttings dehydration.

[0029] The support plate 2 is provided with a first driving assembly 5 for driving the rotation of the filter cartridge 3, the first driving assembly 5 comprises a driven gear 51, a first bracket 52 and a first motor 53, the driven gear 51 is keyed connected to the rotating shaft of the filter cartridge 3, the first motor 53 is installed on the support plate 2 through the first bracket 52, and the output end of the first motor 53 is keyed connected with a driving gear 54 engaged with the driven gear 51; the first driving assembly 5 can drive the rotation of the filter cartridge 3, so that the filter cartridge 3 rotates under the action of centrifugal force to dehydrate the drill cuttings, improving the dehydration efficiency of the drill cuttings.

[0030] And the support plate 2 is also provided with a second driving assembly 6 for driving the rotation of the screw conveyor shaft 4, the second driving assembly 6 comprises a driven friction wheel 61, a second bracket 62 and a second motor 63, the driven friction wheel 61 is keyed connected to the screw conveyor shaft 4, the second bracket 62 is slidingly connected to the support plate 2, the second motor 63 is installed on the second bracket 62, and the output end of the second motor 63 is keyed connected with a driving friction wheel 64; the driving frame 104 is connected with the second bracket 62 through the synchronous frame 11; the second driving assembly 6 can drive the differential rotation of the screw conveyor shaft 4 relative to the filter cartridge 3, realizing the downward conveying of the drill cuttings, and the synchronous frame 11 can control the engagement and separation of the driving friction wheel 64 and the driven friction wheel 61, cooperating with the unloading operation of the drill cuttings.

[0031] The inside lower side of the box 1 is connected with a support ring frame 7, and the filter cartridge 3 is rotatably connected to the support ring frame 7, the lower side of the filter cartridge 3 is provided with a pressure ring assembly 8 for filtering water by extruding the drill cuttings, the pressure ring assembly 8 comprises a sliding frame 81, a ring body 82 and a bottom cover 83, the sliding frame 81 is connected to the inner wall of the box 1, the ring body 82 is installed on the sliding frame 81, and the bottom cover 83 is slidingly connected to the sliding frame 81, and the box 1 is provided with an air cylinder 84 for driving the sliding of the bottom cover 83 to control the opening and closing of the bottom of the ring body 82; the ring body 82 is attached to the bottom of the filter cartridge 3, and the filter cartridge 3 can rotate relative to the ring body 82, and the side of the ring body 82 is provided with filter holes; the setting of the pressure ring assembly 8 facilitates the re-extrusion dehydration of the drill cuttings after centrifugal dehydration, so that the drill cuttings are dehydrated more thoroughly.

[0032] The support ring frame 7 is provided with a residue discharging assembly 9 for discharging the residue, the residue discharging assembly 9 comprises a sliding block 91, a sleeve 92 and a push plate 93, the sliding block 91 is slidably connected to the lower end surface of the support ring frame 7, the sleeve 92 is connected to the sliding block 91, the push plate 93 is slidably connected to the sleeve 92 through a column, and a tension spring 94 is connected between the push plate 93 and the sleeve 92, the push plate 93 is connected with a driving column 95, the lower end surface of the support ring frame 7 is provided with a driving block 96 for pressing the driving column 95, and the residue discharging assembly 9 facilitates pushing and discharging the compacted residue in the compression ring assembly 8, and manual shovel is not needed.

[0033] The support ring frame 7 is further provided with a third driving assembly 10 for driving the residue discharging assembly 9 to discharge the residue, the third driving assembly 10 comprises a reversing gear 101, a connecting frame 102 and a first rack 103, the reversing gear 101 is rotatably connected to the support ring frame 7 through a support, the connecting frame 102 is slidably connected to the support ring frame 7, and the connecting frame 102 is connected with the sliding block 91, the connecting frame 102 is connected with the first rack 103 which is engaged with the reversing gear 101, the bottom cover 83 is connected with a driving frame 104, and the driving frame 104 is connected with a second rack 105 which is engaged with the reversing gear 101; the third driving assembly 10 can control the residue discharging assembly 9 to discharge the residue, and can control the rotation of the screw conveying shaft 4 through the synchronous frame 11, so that the residue which is not extruded and dehydrated is not discharged from the filter cartridge 3 during the residue discharging process.

[0034] The compression ring assembly 8 is provided with a residue discharging pipe 12 on the lower side, and the box body 1 is provided with a water outlet 13 on the lower side, the residue discharging pipe 12 is used for guiding the discharged residue to the outside of the box body 1, and the water outlet 13 is used for discharging the water in the box body 1.

[0035] The working process of the present application is as follows:

[0036] When the residue needs to be dehydrated, the residue is put into the filter cartridge 3, the first motor 53 is started to drive the driving gear 54 to rotate, the driving gear 54 drives the filter cartridge 3 to rotate through the driven gear 51, the filter cartridge 3 is dehydrated under the action of centrifugal force, at the same time, the second motor 63 drives the driving friction wheel 64 to rotate, the driving friction wheel 64 drives the screw conveying shaft 4 to rotate through the driven friction wheel 61, the screw conveying shaft 4 and the filter cartridge 3 rotate at different speeds to convey the residue downward, since the middle part of the screw conveying shaft 4 is provided with a tapered structure, the volume of the residue is gradually compressed during the downward movement, so that the water in the residue is squeezed out, and the effect of the residue dehydration is improved.

[0037] The drill cuttings after centrifugal dewatering enter the ring body 82, under the pressure of the downward conveying of the drill cuttings in the filter cartridge 3, the drill cuttings in the ring body 82 continue to be compressed, when the drill cuttings in the ring body 82 are compressed to a certain extent, the air cylinder 84 drives the bottom covers 83 on both sides of the bottom of the ring body 82 to move away from each other, so that the bottom of the ring body 82 is in an open state, in the process of movement of the bottom cover 83, the bottom cover 83 drives the second rack 105 to move through the driving frame 104, the second rack 105 drives the reversing gear 101 to rotate, so that the reversing gear 101 drives the connecting frame 102 to slide through the first rack 103, the connecting frame 102 drives the push plate 93 to enter the inside of the ring body 82 through the sliding block 91 and the sleeve 92, when the driving column 95 contacts the driving block 96, the inclined surface provided on the driving block 96 extrudes the driving column 95, so that the push plate 93 moves downward to push the drill cuttings, so that the drill cuttings in the ring body 82 are unloaded and discharged to the outside of the box body 1 through the unloading pipeline 12.

[0038] In the process of opening of the bottom cover 83, the driving frame 104 drives the second support 62 to slide through the synchronous frame 11, so that the driving friction wheel 64 is separated from the driven friction wheel 61, and the spiral conveying shaft 4 stops rotating, so as to avoid that the drill cuttings that are not compressed and dewatered are unloaded during the unloading of the drill cuttings, after the bottom cover 83 is closed, the spiral conveying shaft 4 can continue to rotate.

[0039] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present application, the scope of the present application being defined by the appended claims and their equivalents.

Claims

1. A harmless treatment device for drill cuttings, characterized in that: The invention comprises a box body (1), a support plate (2) and a filter cartridge (3), wherein the support plate (2) is installed at an upper position inside the box body (1), the filter cartridge (3) is rotatably connected to the support plate (2), and filter holes for water to pass through are evenly arranged on the filter cartridge (3), a spiral conveying shaft (4) is rotatably connected inside the filter cartridge (3), and the middle part of the spiral conveying shaft (4) is a conical structure, and the spiral conveying shaft (4) and the filter cartridge (3) rotate at a differential speed to convey the drill cuttings downward; A first driving assembly (5) for driving the filter cartridge (3) to rotate is installed on the support plate (2), and a second driving assembly (6) for driving the screw conveying shaft (4) to rotate is also installed on the support plate (2); a supporting ring frame (7) is connected to the lower side of the interior of the box body (1), and the filter cartridge (3) is rotatably connected to the supporting ring frame (7); a pressure ring assembly (8) for squeezing and filtering drill residue is provided on the lower side of the filter cartridge (3); a slag discharge assembly (9) for discharging the filter residue is installed on the supporting ring frame (7); and a third driving assembly (10) for driving the slag discharge assembly (9) to discharge the residue is also installed on the supporting ring frame (7); The pressure ring assembly (8) comprises a slide (81), a ring body (82) and a bottom cover (83), wherein the slide (81) is connected to the inner wall of the box body (1), the ring body (82) is mounted on the slide (81), the bottom cover (83) is slidably connected to the slide (81), and a cylinder (84) is mounted on the box body (1) for driving the bottom cover (83) to slide and control the opening and closing of the bottom of the ring body (82); The slag unloading assembly (9) includes a slider (91), a sleeve (92) and a push plate (93), wherein the slider (91) is slidably connected to the lower end surface of the support ring frame (7), the sleeve (92) is connected to the slider (91), the push plate (93) is connected to the sleeve (92) by sliding up and down through a column, and a tension spring (94) is connected between the push plate (93) and the sleeve (92), the push plate (93) is connected to a driving column (95), the lower end surface of the support ring frame (7) is provided with a driving block (96) for pressing the driving column (95), and the driving block (96) is provided with an inclined surface for squeezing the driving column (95); The third driving assembly (10) includes a reversing gear (101), a connecting frame (102) and a first rack (103), wherein the reversing gear (101) is rotatably connected to the support ring frame (7) via a support, the connecting frame (102) is slidably connected to the support ring frame (7), and the connecting frame (102) is connected to the slider (91), the connecting frame (102) is connected to a first rack (103) meshing with the reversing gear (101), the bottom cover (83) is connected to a driving frame (104), and the driving frame (104) is connected to a second rack (105) meshing with the reversing gear (101).

2. The device for harmless treatment of drill cuttings according to claim 1, characterized in that: The first driving assembly (5) comprises a driven gear (51), a first bracket (52) and a first motor (53); the driven gear (51) is key-connected to the rotating shaft of the filter cartridge (3); the first motor (53) is mounted on the support plate (2) via the first bracket (52); the output end of the first motor (53) is key-connected to a driving gear (54) meshing with the driven gear (51).

3. The device for harmless treatment of drill cuttings according to claim 1, characterized in that: The second driving assembly (6) comprises a driven friction wheel (61), a second bracket (62) and a second motor (63), wherein the driven friction wheel (61) is key-connected to the screw conveying shaft (4), the second bracket (62) is slidably connected to the support plate (2), the second motor (63) is mounted on the second bracket (62), and the output end of the second motor (63) is key-connected to the active friction wheel (64).

4. The device for harmless treatment of drill cuttings according to claim 3, characterized in that: The driving frame (104) and the second bracket (62) are connected via a synchronous frame (11).

5. The device for harmless treatment of drill cuttings according to claim 1, characterized in that: A slag discharge pipe (12) is provided on the lower side of the pressure ring assembly (8), and a water outlet (13) is provided on the lower side of the box body (1).

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