CN113694606A - Underground tunnel waste slurry solid-liquid separation device - Google Patents
Underground tunnel waste slurry solid-liquid separation device Download PDFInfo
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- CN113694606A CN113694606A CN202111015945.7A CN202111015945A CN113694606A CN 113694606 A CN113694606 A CN 113694606A CN 202111015945 A CN202111015945 A CN 202111015945A CN 113694606 A CN113694606 A CN 113694606A
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- 239000002002 slurry Substances 0.000 title claims abstract description 85
- 239000002699 waste material Substances 0.000 title claims abstract description 44
- 239000007788 liquid Substances 0.000 title claims abstract description 31
- 238000000926 separation method Methods 0.000 title claims abstract description 27
- 230000007246 mechanism Effects 0.000 claims abstract description 110
- 238000001914 filtration Methods 0.000 claims abstract description 27
- 230000005540 biological transmission Effects 0.000 claims abstract description 22
- 230000035939 shock Effects 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 27
- 239000000463 material Substances 0.000 claims description 10
- 210000001503 joint Anatomy 0.000 claims description 3
- 238000005553 drilling Methods 0.000 description 20
- 238000000034 method Methods 0.000 description 17
- 239000007790 solid phase Substances 0.000 description 9
- 239000007791 liquid phase Substances 0.000 description 7
- 239000002245 particle Substances 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 239000000126 substance Substances 0.000 description 6
- 229910000278 bentonite Inorganic materials 0.000 description 5
- 239000000440 bentonite Substances 0.000 description 5
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
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- 238000010276 construction Methods 0.000 description 4
- 238000005065 mining Methods 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 230000018044 dehydration Effects 0.000 description 3
- 238000006297 dehydration reaction Methods 0.000 description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 description 3
- 239000011707 mineral Substances 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- 239000010802 sludge Substances 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 210000004907 gland Anatomy 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000011161 development Methods 0.000 description 1
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- 239000006185 dispersion Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/06—Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums
- B01D33/067—Construction of the filtering drums, e.g. mounting or sealing arrangements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/06—Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums
- B01D33/11—Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums arranged for outward flow filtration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D36/00—Filter circuits or combinations of filters with other separating devices
- B01D36/02—Combinations of filters of different kinds
Abstract
The invention discloses a solid-liquid separation device for waste slurry in underground tunnels, which comprises a frame, wherein a mounting frame is arranged above the frame, a plurality of supports are arranged between the mounting frame and the frame, a shock pad is arranged between each support and the mounting frame, a separation mechanism, a differential mechanism, a driving mechanism and a secondary filtering mechanism are arranged on the mounting frame, the separation mechanism comprises a left bearing, a right bearing and a shell, the left bearing and the right bearing are arranged in parallel along the length direction of the mounting frame, the shell is arranged between the left bearing and the right bearing, a centrifugal mechanism is arranged in the shell, a slurry discharge joint and a slurry discharge groove are respectively arranged at the left end and the right end of the bottom of the shell, the slurry discharge joint is butted with the secondary filtering mechanism, the feeding end of the centrifugal mechanism penetrates through the outer side of the shell and is in fixed-axis rotation connection with the left bearing, the driving end of the centrifugal mechanism penetrates through the outer side of the shell and is in transmission connection with the output end of the differential mechanism through the right bearing, the driving mechanism is positioned on the rack right below the differential mechanism, and the output end of the driving mechanism is in transmission connection with the input end of the differential mechanism.
Description
Technical Field
The invention relates to a solid-liquid separation mechanical device for underground tunnel waste slurry, in particular to a horizontal spiral centrifugal machine suitable for underground tunnel bentonite waste slurry in a mining area.
Background
In the field of geological core drilling, bentonite-based mud is the most widely applied and common drilling fluid at present. In recent years, with the exhaustion of mineral resources at shallow part of stratum, the development of mineral resources at home and abroad gradually advances to deep part, and the problems of great technical difficulty, high drilling accident rate and high cost are often faced when the deep hole drilling is simply carried out from the earth surface, therefore, when a deep mineral resource needs to be further detected in a mining area, many drilling holes are designed in a tunnel which is hundreds of meters or thousands of meters underground, however, with the continuous circulation of drilling mud, the performance of the mud changes, the technical requirements of a drilling retaining wall or other aspects are difficult to meet, and the drilling mud cannot be continuously used for drilling construction, so that a large amount of drilling waste mud is generated, generally speaking, the waste drilling mud is a special multiphase colloid-suspended rock slag floating system, has very complicated components, and mainly comprises clay, various chemical treatment agents, rock debris, drilling slag and the like.
Different from surface drilling, in the mining area, the space of underground tunnel is very limited, and the drilling point is more dispersed, directly discharges the mud after abandonment, not only can seriously pollute the geological environment in the pit, be unfavorable for environmental protection, and there are a lot of potential safety hazards in addition, for example erode the tunnel, block up drainage pipe or irrigation canals and ditches etc. can influence the drainage system in the pit when serious, consequently need carry out timely effectual processing, the method of handling abandonment mud at present mainly has following several types:
1. the pit is directly sealed, the method is simplest, but the sealing effect is often difficult to ensure according to different sealing processes, certain potential safety hazards exist, the underground environment protection is not facilitated, in addition, a large amount of waste mud can be generated along with the increase of the drilling engineering quantity, and the method is not practical in the underground narrow space;
2. the waste mud is sealed or transported in situ after being cured, the method has long treatment period, occupies a waste mud pool for a long time in the treatment process, can influence the normal construction of underground drilling, and has high requirements on equipment and high curing cost;
3. the mechanical treatment method based on the principle of vacuum dehydration or filter pressing dehydration has good treatment effect, but has complex process flow, large occupied area of required equipment and high cost, and is basically difficult to realize in a mining area, particularly in a gallery;
4. the centrifugal dehydration method is a mechanical method which has relatively low treatment cost and is reliable by separating solid from liquid and then further treating slurry by using a centrifugal principle, and a horizontal spiral centrifuge and the like are common. However, for the waste slurry, because the bentonite solid particles contained in the waste slurry are tiny, a stable colloid dispersion system is generated after continuous drilling circulation, and data show that the particle size of the bentonite solid particles is between 10 < -4 > and 10 < -6 > m, under the condition, the centrifugal force required for realizing solid-liquid separation is very large, the volume of a corresponding centrifugal machine is larger, the volume of a common horizontal spiral centrifugal machine in the current market often cannot meet the construction requirement of a narrow space of an underground tunnel, and in addition, when the waste slurry contains organic suspended particles smaller than the water density, the organic suspended particles cannot be deposited on the wall of a rotary drum and only can be suspended in water and discharged out of the machine along with the water, and cannot be separated.
Through the analysis, the horizontal spiral centrifuge is considered to be a relatively excellent solid-liquid separation device, the device mainly comprises a centrifugal separation dewatering device and accessories, and the treatment method is simple and reliable, low in cost and high in efficiency. But aiming at the characteristics of relatively dispersed drilling points, large amount of waste mud and narrow treatment space of underground tunnel drilling, further optimization and transformation are needed in order to not influence the normal construction of drilling engineering so as to solve the problem of solid-liquid separation of the waste mud of the underground tunnel.
Disclosure of Invention
Technical problem to be solved
The invention mainly aims to solve the problems that bentonite-based waste slurry is difficult to separate solid from liquid in a narrow space of an underground tunnel and is convenient for subsequent treatment.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: a solid-liquid separation device for waste slurry in an underground tunnel comprises a rack, wherein a mounting rack is arranged above the rack, a plurality of supports are arranged between the mounting rack and the rack, a shock pad is arranged between each support and the mounting rack, a separation mechanism, a differential mechanism, a driving mechanism and a secondary filtering mechanism are arranged on the mounting rack, the separation mechanism comprises a left bearing, a right bearing and a shell, the left bearing and the right bearing are arranged in parallel along the length direction of the mounting rack, the shell is arranged between the left bearing and the right bearing, a centrifugal mechanism is arranged in the shell, a slurry discharge joint and a slurry discharge groove are respectively arranged at the left end and the right end of the bottom of the shell, the slurry discharge joint is butted with the secondary filtering mechanism, the feeding end of the centrifugal mechanism penetrates through the outer side of the shell and is rotationally connected with a fixed shaft of the left bearing, and the transmission end of the centrifugal mechanism penetrates through the outer side of the shell and the right bearing to be in transmission connection with the output end of the differential mechanism, the driving mechanism is positioned on the rack right below the differential mechanism, and the output end of the driving mechanism is in transmission connection with the input end of the differential mechanism.
Preferably, the centrifugal mechanism comprises a rotary drum, a plurality of overflow ports are arranged on the end surface of the rotary drum close to one end of the slurry discharge joint, a plurality of overflow ports are arranged around the axis of the rotary drum in a circumferential direction at equal intervals, a plurality of underflow nozzles are arranged on the outer wall of the rotary drum close to one end of the slurry discharge groove, a plurality of underflow nozzles are arranged around the axis of the rotary drum in a circumferential direction at equal intervals, a spiral conveyer is coaxially arranged in the rotary drum, a cavity is arranged in the spiral conveyer, a plurality of overflow holes are uniformly distributed on the side wall of the cavity, the feed end of the centrifugal mechanism comprises a slurry inlet pipe, one end of the slurry inlet pipe facing the spiral conveyer penetrates into the cavity, the slurry inlet pipe is rotatably connected with the fixed shaft of the spiral conveyer, one end of the slurry inlet pipe, far away from the spiral conveyer, sequentially penetrates through the left side wall of the rotary drum and the left side wall of the shell and is rotatably connected with a left bearing, and the slurry inlet pipe is detachably and fixedly connected with the left end surface of the rotary drum, the centrifugal mechanism is characterized in that a transmission end of the centrifugal mechanism comprises a first hollow shaft rod and a second hollow shaft rod, the left end of the first hollow shaft rod is coaxially detachably and fixedly connected with the screw conveyor, the right end of the first hollow shaft rod is in transmission connection with the differential mechanism, the second hollow shaft rod is sleeved outside the first hollow shaft rod, a transmission bearing is arranged between the second hollow shaft rod and the first hollow shaft rod, the left end of the second hollow shaft rod is coaxially detachably and fixedly connected with the left end face of the rotary drum, the right end of the second hollow shaft rod penetrates through a right bearing to be in transmission connection with the differential mechanism, and the differential mechanism drives the rotary drum and the screw conveyor to rotate in the same direction and at a different speed through the second hollow shaft rod and the first hollow shaft rod.
Preferably, a plurality of ribs are uniformly distributed on the inner wall of the rotary drum in a circumferential direction around the axis at equal intervals.
Preferably, the aspect ratio of the rotating drum is 1: 2.
Preferably, the pitch of the helical blade is 85mm, the half cone angle of the helical blade is 10 °, the small end cone angle of the rotary drum is 9 °, and the gap between the helical blade and the rotary drum is 7 mm.
Preferably, the secondary filter mechanism includes the filter tube, the filter tube lateral wall is inserted and is equipped with the inlet tube, the inlet tube with arrange thick liquid and connect the butt joint, the filter tube is close to inlet tube one end and is provided with plug one, the filter tube is kept away from the one end of inlet tube and can be dismantled and be connected with fixed lid, the fixed lid is towards the coaxial inner tube that is provided with of one end of plug one, the inner tube extends to and is provided with plug two in the filter tube, a plurality of through-hole one has been seted up on the lateral wall of inner tube, be provided with first filtering material between inner tube outer wall and the filter tube inner wall, the intraductal second filtering material that is provided with, the coaxial one end of filter tube that is kept away from to the fixed lid is inserted and is equipped with the outlet pipe, the outlet pipe runs through fixed lid and inner tube intercommunication.
Preferably, the axis of inlet tube is mutually perpendicular with the axis of filter tube, the one end that the thick liquid joint was kept away from to the inlet tube extends to in the filter tube to be provided with end cap three, a plurality of through-hole two has been seted up on the inlet tube lies in the lateral wall in the filter tube.
Preferably, actuating mechanism includes motor and mounting panel, a plurality of fixed orificess have been seted up on the mounting panel, every all be provided with the bolt in the fixed orifices, the motor passes through the bolt is installed on the mounting panel, a plurality of locating holes have still been seted up to both sides around lieing in the motor on the mounting panel, be fixed with four screw rods in the frame under the motor, the locating hole that corresponds one side can be passed to the screw rod, just the equal threaded connection in both sides has lock nut about the screw rod lies in the mounting panel, the output of motor is provided with motor pulley, differential mechanism's input is provided with differential mechanism belt pulley, connect through belt drive between motor pulley and the differential mechanism belt pulley.
Preferably, the casing includes inferior valve and upper cover, the inferior valve is installed on the mounting bracket, can dismantle between upper cover and the inferior valve and be connected, be provided with the differential mechanism lid on the differential mechanism, can dismantle through the screw between differential mechanism lid and the mounting bracket and be connected.
(III) advantageous effects
The invention provides a solid-liquid separation device for underground tunnel waste slurry. The method has the following beneficial effects:
the slurry discharge joint is compact in structure, reasonable and standard in layout, small in size, light in weight and convenient to carry, is particularly suitable for being used in space-limited environments such as a tunnel, is convenient to move in the tunnel, has good adaptability to the narrow space of the underground tunnel, can be rotatably adjusted by 360 degrees so that equipment can be conveniently discharged in any direction in the narrow space of the tunnel, and is convenient to clean due to the additional arrangement of the upper cover.
The separation mechanism in the invention has reasonable design and good waste liquid treatment continuity, can completely and effectively separate solid-phase substances in the waste slurry, is convenient for further treatment of the waste slurry, and can effectively remove suspended particles in a liquid phase by additionally arranging one or more secondary filtering mechanisms.
The equipment provided by the invention is simple to operate, the waste slurry treatment efficiency is high, and the waste slurry can be treated by about 1.5m per hour3The treatment effect is good, the treated liquid phase part is approximately in a clear water shape, the difference between the fluidity and the clear water is not great, and the parameters of the separated liquid measured by a laboratory are as follows: at the moment, the funnel has the viscosity of 15.54 seconds, the specific gravity of 1.014, the sand content and the mud content of 0 and single component, and does not cause a pipe when circulating in a downhole tunnelPlugging of the streets or trenches. And the water content of the treated solid-phase substance is sampled and tested, the average water content is 38 percent, and bagging and transportation can be completely realized.
The invention can not only treat the waste slurry, but also carry out sand removal operation on the slurry in use, thereby prolonging the service life and the performance of the slurry and saving the preparation cost of the slurry.
Drawings
FIG. 1 is a schematic front view of the present invention;
FIG. 2 is a left side view of the present invention;
FIG. 3 is a cross-sectional view of the centrifugal mechanism of the present invention;
FIG. 4 is a schematic front view of the secondary filtering mechanism of the present invention;
FIG. 5 is a schematic cross-sectional view of the secondary filtering mechanism of the present invention.
In the figure, 1, a left bearing; 2. a lower case; 3. a gland assembly; 4. an upper cover; 5. a right bearing; 6. a differential case; 7. a differential pulley; 8. a pulp inlet pipe; 9. a mounting frame; 10. a shock pad; 11. a frame; 12. a pulp discharge joint; 13. a lower case; 14. a sludge discharge groove; 15. a motor pulley; 16. mounting a plate; 17. a motor; 18. a support; 19. an overflow aperture; 20. an overflow port; 21. a bottom spout; 22. a drum; 23. a rib; 24. a screw conveyor; 25. a differential mechanism; 26. a slurry supply pipe; 27. a fixed cover; 28. a filter element; 29. a water outlet pipe; 30. an inner tube; 31. a filter tube; 32. and (4) a water inlet pipe.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, an embodiment of the present invention provides a technical solution: a solid-liquid separation device for waste slurry in an underground tunnel comprises a frame 11, wherein a mounting frame 9 is arranged above the frame 11, a plurality of supports 18 are arranged between the mounting frame 9 and the frame 11, a shock pad 10 is arranged between each support 18 and the mounting frame 9, a separation mechanism, a differential 25, a driving mechanism and a secondary filtering mechanism are arranged on the mounting frame 9, the separation mechanism comprises a left bearing 1, a right bearing 5 and a shell, the left bearing 1 and the right bearing 5 are arranged in parallel along the length direction of the mounting frame 9, the shell is arranged between the left bearing 1 and the right bearing 5, a centrifugal mechanism is arranged in the shell, a slurry discharge joint 12 and a slurry discharge groove 14 are respectively arranged at the left end and the right end of the bottom of the shell, the slurry discharge joint 12 is butted with the secondary filtering mechanism, the feeding end of the centrifugal mechanism penetrates through the outer side of the shell and is in fixed-axis rotation connection with the left bearing 1, the transmission end of the centrifugal mechanism penetrates through the outer side of the shell and penetrates through the right bearing 5 to be in transmission connection with the output end of the differential mechanism 25, the driving mechanism is located on the rack 11 right below the differential mechanism 25, and the output end of the driving mechanism is in transmission connection with the input end of the differential mechanism 25.
Furthermore, considering the problem that the separating mechanism vibrates greatly in the working process, the rubber shock absorption pads 10 are additionally arranged at the lower parts of the ends of the left bearing 1 and the right bearing 5, and the shock absorption pads 10 are additionally arranged between the mounting frame 9 and the support 18, so that the separating mechanism works more stably, the rotary drum 22 can run stably under the complex working condition in the tunnel, and the noise pollution on the site is reduced.
Furthermore, parameters are optimized in structural design, the maximum longitudinal length is 2.1m, the size is small, and the underground tunnel is good in adaptability to narrow space of an underground tunnel.
Furthermore, considering that the waste slurry contains a large amount of rock drill cuttings, when the helical blade conveys solid-phase substances, a large amount of abrasion can be caused to the helical blade, the closer to the small end, the more serious the abrasion is, and in order to prolong the service life, the helical blade is made of heat-treated wear-resistant steel.
In this embodiment, the centrifugal mechanism includes a rotary drum 22, a plurality of overflow ports 20 are disposed on an end surface of the rotary drum 22 near one end of the slurry discharge joint 12, the plurality of overflow ports 20 are disposed around an axis of the rotary drum 22 in a circumferential direction at equal intervals, a plurality of underflow nozzles 21 are disposed on an outer wall of the rotary drum 22 near one end of the slurry discharge chute 14, the plurality of underflow nozzles 21 are disposed around an axis of the rotary drum 22 in a circumferential direction at equal intervals, a screw conveyor 24 is coaxially disposed in the rotary drum 22, a cavity is disposed in the screw conveyor 24, a plurality of overflow holes 19 are uniformly distributed on a side wall of the cavity, a feed end of the centrifugal mechanism includes a slurry inlet pipe 8, one end of the slurry inlet pipe 8 facing the screw conveyor 24 penetrates into the cavity, the slurry inlet pipe 8 is connected with the screw conveyor 24 in a fixed-axis rotating manner, one end of the slurry inlet pipe 8 far away from the screw conveyor 24 sequentially penetrates through a left side wall of the rotary drum 22 and a left side wall of the casing, the centrifugal mechanism comprises a first hollow shaft rod and a second hollow shaft rod, the left end of the first hollow shaft rod is coaxially, detachably and fixedly connected with a screw conveyor 24, the right end of the first hollow shaft rod is in transmission connection with a differential mechanism 25, the second hollow shaft rod is arranged on the outer side of the first hollow shaft rod, a transmission bearing is arranged between the second hollow shaft rod and the first hollow shaft rod, the left end of the second hollow shaft rod is coaxially, detachably and fixedly connected with the left end face of the rotary drum 22, the right end of the second hollow shaft rod penetrates through a right bearing 5 and is in transmission connection with the differential mechanism 25, and the differential mechanism 25 drives the rotary drum 22 and the screw conveyor to rotate in the same direction and in a differential manner through the second hollow shaft rod and the first hollow shaft rod.
Furthermore, for the convenience of feeding, the end of the pulp inlet pipe 8 far away from the shell is communicated with a pulp supply pipe 26 through the left bearing 1.
Furthermore, considering the reliability of the whole device and the characteristics of the waste slurry, the overflow holes 19 are directly arranged at the large end of the rotary drum 22 (namely the right end face of the rotary drum 22), and 6 overflow holes 19 are arranged in total, so that the separated liquid phase can be smoothly discharged and enters the slurry discharge joint 12 through a slurry outlet formed at the bottom of the shell; the bottom flow nozzle 21 is arranged at the small end of the rotary drum 22 (namely, the left end of the rotary drum 22), 12 bottom flow nozzles 21 are arranged in total, and the separated solid phase can enter the sludge discharge groove 14 through the bottom flow nozzles 21. In addition, the discharge direction of the outlet of the slurry discharge joint 12 can be adjusted by 360 degrees, so that the equipment can be discharged in any direction in the narrow space of the tunnel.
In this embodiment, a plurality of ribs 23 are uniformly distributed on the inner wall of the rotary drum 22 in a circumferential direction around the axis.
In this example, the aspect ratio of the rotating drum 22 is 1: 2.
Further, drum 22 has a maximum diameter of 350mm and a length of 700mm in consideration of the size of the screw centrifuge.
In this embodiment, the pitch of the helical blade is 85mm, the half cone angle of the helical blade is 10 °, the small end cone angle of the rotary drum 22 is 9 °, and the gap between the helical blade and the rotary drum 22 is 7 mm. The values here are determined according to the properties of the waste sludge.
In this embodiment, the secondary filter mechanism includes filter tube 31, filter tube 31 lateral wall is inserted and is equipped with inlet tube 32, inlet tube 32 with arrange thick liquid joint 12 butt joint, filter tube 31 is close to inlet tube 32 one end and is provided with end cap one, the one end that filter tube 31 kept away from inlet tube 32 can be dismantled and is connected with fixed lid 27, fixed lid 27 is provided with inner tube 30 towards the one end of end cap one is coaxial, inner tube 30 extends to and is provided with end cap two in the filter tube 31, a plurality of through-hole one has been seted up on the lateral wall of inner tube 30, be provided with first filtering material between inner tube 30 outer wall and the filter tube 31 inner wall, be provided with second filtering material in the inner tube 30, the one end that filter tube 31 was kept away from to fixed lid 27 is coaxial to be inserted and is equipped with outlet pipe 29, outlet pipe 29 runs through fixed lid 27 and inner tube 30 intercommunication. The liquid phase discharged from the slurry discharge joint 12 enters the filter pipe 31 from the water inlet pipe 32, enters the inner pipe 30 from the through hole after being filtered by the first filter material, and is discharged from the water outlet pipe 29 after being filtered by the second filter material.
Furthermore, in order to improve the filtering effect and remove suspended particles in the liquid phase, the water outlet pipe 29 is arranged upwards, the filtering is carried out in a countercurrent mode, and a plurality of secondary filtering mechanisms can be connected behind the water outlet pipe 29.
Furthermore, to prevent the second filter material from flowing out of the outlet pipe 29, a filter element 28 is provided at the inlet of the outlet pipe 29 in the inner pipe 30.
In this embodiment, the axis of the water inlet pipe 32 is perpendicular to the axis of the filter pipe 31, one end of the water inlet pipe 32, which is far away from the slurry discharging connector 12, extends into the filter pipe 31 and is provided with a third plug, and a plurality of second through holes are formed in the side wall of the water inlet pipe 32, which is located in the filter pipe 31.
In this embodiment, actuating mechanism includes motor 17 and mounting panel 16, a plurality of fixed orificess have been seted up on the mounting panel 16, every all be provided with the bolt in the fixed orifices, motor 17 passes through the bolt is installed on mounting panel 16, a plurality of locating holes have still been seted up to both sides around lieing in motor 17 on the mounting panel 16, be fixed with four screw rods in the frame 11 under motor 17, the screw rod can pass the locating hole that corresponds one side, just the screw rod lies in the equal threaded connection in both sides about mounting panel 16 and has lock nut, motor 17's output is provided with motor pulley 15, differential mechanism 25's input is provided with differential mechanism belt pulley 7, connect through belt transmission between motor pulley 15 and the differential mechanism belt pulley 7.
Furthermore, considering the problem of the migration of the whole device in the tunnel, the driving mechanism and other mechanisms are designed in a separated mode, the connection with other mechanisms on site can be realized through bolts and screws of the mounting plate 16, and the four screws and bolts are arranged, so that the horizontal displacement and the vertical displacement can be finely adjusted, and the differential mechanism 25 can be conveniently assembled.
In this embodiment, the casing includes lower casing 132 and upper cover 4, lower casing 132 is installed on mounting bracket 9, upper cover 4 and lower casing 132 can dismantle the connection between them, be provided with differential mechanism lid 6 on the differential mechanism 25, can dismantle the connection through gland subassembly 3 (screw or buckle) between differential mechanism lid 6 and the mounting bracket 9.
Further, in consideration of safety and convenient cleaning of the apparatus, the housing is disassembled into the lower case 132 and the upper case 4, and the lower case 132 and the upper case 4 are detachably and fixedly coupled.
The working principle of the invention is as follows: when the device starts to work, a reasonable place is arranged firstly, the device, the waste slurry tank and other devices are ensured to be reasonable in position, and the connection condition of each part is checked. Then, a mud pump is communicated with a slurry inlet pipe 8 in the device (the mud pump is communicated with a slurry supply pipe 26 firstly, the slurry supply pipe 26 is communicated with the slurry inlet pipe 8, the slurry inlet pipe 8 rotates along with the rotary drum 22, the slurry supply pipe 26 does not rotate along with the slurry inlet pipe 8), the mud pump is used for continuously pumping the waste mud into a cavity of a spiral conveyor 24 in the rotary drum 22, the waste mud is thrown out from an overflow hole 19 when the spiral conveyor 24 rotates at a high speed, but the pumping flow of the waste mud needs to be strictly controlled, the rotary drum 22 and the spiral conveyor 24 rotate in the same direction at different speeds under the action of a speed difference of a (planetary) differential mechanism 25, blades scrape solid phases on the inner wall of the rotary drum 22 to a bottom flow nozzle 21 at the small end position of the rotary drum 22 and discharge the solid phases out of the rotary drum 22, and separated liquid phases are discharged into a secondary filtering mechanism through an overflow port 20 and return to a waste slurry pool after being filtered.
The technical parameters of the device are shown in table 1.
TABLE 1 Main Performance parameters of solid-liquid separator for waste slurry in underground gallery
The operation steps of the equipment are that the starting operation sequence of the device and the slurry pump is that a power supply main switch is firstly switched on, and the motor 17 drives the rotary drum 22 and the screw conveyor 24 to reach the highest rotating speed and then switches on the power supply switch of the slurry pump;
and (3) stopping the operation sequence of the device and the slurry pump, turning off the power supply of the slurry pump, stopping supplying liquid, and driving the rotary drum 22 and the screw conveyor 24 by the motor 17 to continuously run for about 5 minutes to stop.
Through repeated and cyclic treatment, the solid phase components of the waste slurry in the waste slurry pool can be effectively and smoothly separated into mud-like substances, the mud-like substances can be bagged and then conveyed out of the ground surface for treatment, and the liquid phase can be discharged or used for other purposes. In addition, before treatment, the slurry in the waste slurry tank can be subjected to flocculation treatment, so that the volume of a solid phase is increased, and the solid-liquid separation efficiency of the device can be greatly improved.
If the whole device is stopped for a long time, the water supply in the screw conveyor 24 of the forward rotary drum 22 is stopped for cleaning, and the device is stopped for about 5 minutes. And during the shutdown period, the clean water is continuously injected into the screw conveyor 24 of the rotary drum 22 for about 3 minutes and then started to operate, and the process is repeated for 2-3 times so as to thoroughly remove impurities in the screw conveyor 24 and the rotary drum 22.
The results of the sampling test after the field application are shown in table 2.
TABLE 2 moisture content data of solid phase materials after treatment
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The utility model provides a gallery abandonment mud solid-liquid separation equipment in pit, a serial communication port, which comprises a frame, the frame top is provided with the mounting bracket, be provided with many supports between mounting bracket and the frame, and every all be provided with the shock pad between support and the mounting bracket, be provided with separating mechanism, differential mechanism, actuating mechanism and secondary filter mechanism on the mounting bracket, separating mechanism includes left bearing, right bearing and casing, left side bearing and right bearing are along the length direction parallel arrangement of mounting bracket, the casing sets up between left bearing and right bearing, be provided with centrifugal mechanism in the casing, both ends are provided with row's thick liquid joint, mud groove respectively about the casing bottom, arrange thick liquid joint with secondary filter mechanism docks, centrifugal mechanism's feed end runs through to the casing outside and with left bearing dead axle rotation is connected, centrifugal mechanism's transmission end runs through to the casing outside and passes right bearing with differential mechanism's output passes The driving mechanism is located on the rack right below the differential mechanism, and the output end of the driving mechanism is in transmission connection with the input end of the differential mechanism.
2. The solid-liquid separation device for the abandoned slurry in the underground tunnel according to claim 1, wherein the centrifugal mechanism comprises a rotary drum, the end surface of the rotary drum near one end of the slurry discharge joint is provided with a plurality of overflow ports, the plurality of overflow ports are arranged in a circumferential direction around the axis of the rotary drum at equal intervals, the outer wall of the rotary drum near one end of the slurry discharge groove is provided with a plurality of underflow nozzles, the plurality of underflow nozzles are arranged in a circumferential direction around the axis of the rotary drum at equal intervals, a spiral conveyor is coaxially arranged in the rotary drum, a cavity is arranged in the spiral conveyor, a plurality of overflow holes are evenly distributed on the side wall of the cavity, the feeding end of the centrifugal mechanism comprises a slurry inlet pipe, one end of the slurry inlet pipe facing the spiral conveyor penetrates into the cavity, the slurry inlet pipe is rotatably connected with the fixed shaft of the spiral conveyor, one end of the slurry inlet pipe far away from the spiral conveyor sequentially penetrates through the left side wall of the rotary drum and the left side wall of the shell, the centrifugal mechanism comprises a first hollow shaft rod and a second hollow shaft rod, the left end of the first hollow shaft rod is coaxially, detachably and fixedly connected with the screw conveyor, the right end of the first hollow shaft rod is in transmission connection with a differential mechanism, the hollow shaft rod is sleeved outside the first hollow shaft rod, a transmission bearing is arranged between the second hollow shaft rod and the first hollow shaft rod, the left end of the second hollow shaft rod is coaxially, detachably and fixedly connected with the left end face of the rotary drum, the right end of the second hollow shaft rod penetrates through a right bearing and is in transmission connection with the differential mechanism, and the differential mechanism drives the rotary drum and the screw feeder to rotate in the same direction and in a differential speed mode through the second hollow shaft rod and the first hollow shaft rod.
3. The solid-liquid separator for waste mud of underground tunnel according to claim 2, wherein the inner wall of said drum has a plurality of ribs arranged in a circumferential direction around the axis and at equal intervals.
4. The solid-liquid separation device for the underground tunnel waste slurry as claimed in claim 2, wherein the length-diameter ratio of the rotary drum is 1: 2.
5. The solid-liquid separation device for the waste slurry in the underground tunnel according to claim 2, wherein the pitch of the helical blade is 85mm, the half cone angle of the helical blade is 10 degrees, the cone angle of the small end of the rotary drum is 9 degrees, and the gap between the helical blade and the rotary drum is 7 mm.
6. The solid-liquid separation device for the waste slurry in the underground tunnel according to claim 1, wherein the secondary filtering mechanism comprises a filtering pipe, a water inlet pipe is inserted into the side wall of the filtering pipe, the water inlet pipe is in butt joint with the slurry discharge joint, a first plug is arranged at one end, close to the water inlet pipe, of the filtering pipe, a fixed cover is detachably connected to one end, away from the water inlet pipe, of the filtering pipe, an inner pipe is coaxially arranged at one end, facing the first plug, of the fixed cover, the inner pipe extends to the inside of the filtering pipe and is provided with a second plug, a plurality of first through holes are formed in the side wall of the inner pipe, a first filtering material is arranged between the outer wall of the inner pipe and the inner wall of the filtering pipe, a second filtering material is arranged in the inner pipe, a water outlet pipe is coaxially inserted into one end, away from the filtering pipe, of the fixed cover, and the water outlet pipe penetrates through the fixed cover and is communicated with the inner pipe.
7. The solid-liquid separation device for the underground tunnel waste slurry as claimed in claim 6, wherein the axis of the water inlet pipe is perpendicular to the axis of the filter pipe, one end of the water inlet pipe, which is far away from the slurry discharge joint, extends into the filter pipe and is provided with a third plug, and a plurality of second through holes are formed in the side wall of the water inlet pipe, which is located in the filter pipe.
8. The solid-liquid separation device for the waste slurry in the underground tunnel according to claim 1, wherein the driving mechanism comprises a motor and a mounting plate, a plurality of fixing holes are formed in the mounting plate, each fixing hole is internally provided with a bolt, the motor is mounted on the mounting plate through the bolts, a plurality of positioning holes are formed in the front side and the rear side of the motor on the mounting plate, four screw rods are fixed on a rack right below the motor and can penetrate through the positioning holes in the corresponding side, the screw rods are located on the upper side and the lower side of the mounting plate and are in threaded connection with locking nuts, a motor belt pulley is arranged at an output end of the motor, a differential belt pulley is arranged at an input end of the differential, and the motor belt pulley and the differential belt pulley are connected through belt transmission.
9. The solid-liquid separation device for the waste slurry in the underground tunnel according to claim 1, wherein the casing comprises a lower casing and an upper casing, the lower casing is mounted on the mounting frame, the upper casing and the lower casing are detachably connected, the differential mechanism is provided with a differential mechanism cover, and the differential mechanism cover and the mounting frame are detachably connected through screws.
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