Raise boring machine slurry circulation rapid precipitation structure equipment

Abstract

The utility model relates to the technical field of drilling sewage treatment, and provides raise boring machine slurry circulation rapid sedimentation structure equipment which comprises a sedimentation tank and a slurry tank. A first partition plate and a second partition plate are sequentially arranged in the sedimentation tank at intervals, so that the inner space of the sedimentation tank is sequentially divided into a first sedimentation bin, a second sedimentation bin and a third sedimentation bin which are gradually close to the mud tank; the first partition plate is obliquely arranged, and the horizontal sectional area of the first precipitation bin is gradually reduced from top to bottom; a plurality of splitter plates are arranged on the plate surface, directly facing the first precipitation bin, of the first partition plate at intervals; the top and the bottom of the first partition plate are respectively communicated with the second precipitation bin. A first partition plate and a second partition plate are arranged in the sedimentation tank, so that multi-stage sedimentation is realized, and the sedimentation effect is improved; the first precipitation bin is further divided into smaller spaces by the splitter plate, so that the flowability of fluid in the first precipitation bin is reduced, and the precipitation efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of drilling sewage treatment, and particularly relates to a reverse drilling rig mud circulating rapid precipitation structure equipment. BACKGROUND

[0002] Reverse drilling rig construction is mainly used for underground shaft construction. The commonly used hole-forming process is mud circulation, that is, the mud residue in the hole is replaced to a sedimentation tank through the residue-carrying effect of the mud, and then the mud without sediment is circulated to the hole through a mud pump, so that the hole is formed and the residue is removed through continuous circulation. Due to the necessity of mud circulation arrangement, a separate mud tank and sedimentation tank are often arranged in the actual field. The working principle of the mud tank is to flow the mud in the hole into the sedimentation tank through a groove, and after the mud carrying the drilling residue in the sedimentation tank is deposited, the surface mud flows into the mud tank through the overflow port, and then the mud is circulated to the hole through the mud pump. However, the existing sedimentation tank has poor sedimentation effect, which causes more coarse particles or rock residue to be repeatedly brought into the hole, affecting the hole cleaning effect. SUMMARY

[0003] In view of the problems in the prior art, the present application provides a reverse drilling rig mud circulating rapid precipitation structure equipment, which has the characteristics of rapid precipitation and good sedimentation effect.

[0004] The utility model provides a reverse drilling rig mud circulating rapid precipitation structure equipment, which comprises a sedimentation tank, a mud tank and an overflow port connecting the sedimentation tank and the mud tank. First and second partitions are sequentially and spacedly arranged in the sedimentation tank to sequentially divide the internal space of the sedimentation tank into first, second and third sedimentation compartments gradually approaching the mud tank. The first partition is inclinedly arranged, and the horizontal cross-sectional area of the first sedimentation compartment gradually decreases from top to bottom. A plurality of flow dividing plates are spacedly arranged on the surface of the first partition opposite to the first sedimentation compartment. The top and bottom of the first partition are respectively communicated with the second sedimentation compartment. The bottom of the second partition is connected with the bottom of the sedimentation tank, the top of the second partition is lower than the top of the first partition, and a horizontal support positioning member is installed on the top of the second partition. One end of the horizontal support positioning member is connected with the surface of the first partition opposite to the second sedimentation compartment, and the other end is located in the third sedimentation compartment and connected with a flow blocking plate arranged on the top of the third sedimentation compartment. The flow blocking plate is arranged opposite to the overflow port.

[0005] Further, the horizontal support positioning member has a plurality of horizontal support positioning members, and the plurality of horizontal support positioning members are spacedly arranged. A connecting mesh plate is connected between adjacent horizontal support positioning members. The connecting mesh plate is not higher than the top of the second partition. The connecting mesh plate is located in the third sedimentation compartment and between the second partition and the flow blocking plate.

[0006] Further, the bottom of the connecting net plate is vertically suspended with a plurality of drainage rods; the bottom of the drainage rod is spaced apart from the bottom of the third sedimentation bin by less than 20 cm.

[0007] Further, the horizontal support positioning member comprises a support plate, a support seat, a lower clamping plate and an upper clamping plate; the support plate is horizontally arranged, one end of the support plate is connected with the support seat, the other end of the support plate is connected with the upper clamping plate, the bottom of the support plate and between the support seat and the upper clamping plate is connected with the lower clamping plate; the support seat is connected with the first partition plate, the lower clamping plate clamps and connects the top of the second partition plate; the upper clamping plate clamps and connects the bottom of the flow baffle.

[0008] Further, the bottom of the second sedimentation bin is connected with an L-shaped connecting seat, and the L-shaped connecting seat is connected with the second partition plate.

[0009] Further, the plate surface of the first partition plate opposite to the first sedimentation bin is spaced apart and provided with a plurality of limiting members, each limiting member comprises two limiting plates spaced apart, and a mounting groove is arranged between the two limiting plates; the flow distribution plate is inserted into the mounting groove.

[0010] Further, the flow distribution plate is slidingly fitted in the mounting groove in the height direction.

[0011] Further, one side of the limiting plate is provided with a fastener connected with the flow distribution plate.

[0012] Further, the top of the first partition plate is provided with an overflow net communicating the first sedimentation bin and the second sedimentation bin.

[0013] The beneficial effects of the utility model are: by setting the first partition plate and the second partition plate in the sedimentation tank, the sedimentation tank is divided into the first sedimentation bin, the second sedimentation bin and the third sedimentation bin, multi-stage sedimentation is realized, and the sedimentation effect is improved; due to the inclined arrangement of the first partition plate, the horizontal sectional area of the first sedimentation bin gradually decreases from top to bottom, coarse particles or rock slag deposited at the bottom of the first sedimentation bin are easy to gather and not easy to splash; especially, the first sedimentation bin is further divided into smaller spaces by the flow distribution plate, the fluid flowability in the first sedimentation bin is reduced, and the sedimentation efficiency is improved. By setting a plurality of drainage rods in the third sedimentation bin, when the mud overflowed from the second sedimentation bin flows to the third sedimentation bin, the mud flows along the drainage rods, avoiding the liquid in the third sedimentation bin from being shaken during the falling process of the mud, and affecting the sedimentation effect. The overflow net and the connecting net plate realize multi-stage filtration of the mud, and further ensure the sedimentation effect. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a sectional view of the structure of the reverse circulation drilling rig mud circulating rapid sedimentation structure equipment.

[0015] Figure 2 for Figure 1 a first partition plate;

[0016] Figure 3 for Figure 1 a horizontal support positioning member and a drainage rod.

[0017] In the figure, 1 is a sedimentation tank; 2 is a slurry tank; 3 is a slurry overflow port; 4 is a first partition plate; 5 is a second partition plate; 6 is a first sedimentation bin; 7 is a second sedimentation bin; 8 is a third sedimentation bin; 9 is a flow distribution plate; 10 is a limiting plate; 11 is a mounting groove; 12 is a fastener; 13 is an overflow screen; 14 is an L-shaped connecting seat; 15 is a horizontal support positioning member; 16 is a support plate; 17 is a support seat; 18 is a lower clamping plate; 19 is an upper clamping plate; 20 is a connecting screen plate; 21 is a drainage rod; and 22 is a flow blocking plate. DETAILED DESCRIPTION

[0018] The utility model will be further described in detail below in combination with the drawings and specific embodiments.

[0019] As Figures 1-3 shown in the reverse well drilling machine slurry circulation rapid sedimentation structure equipment, including sedimentation tank 1, slurry tank 2 and the slurry overflow port 3 of intercommunication sedimentation tank 1 and slurry tank 2. The side wall of sedimentation tank 1 and slurry tank 2 is attached, and the attached side wall is provided with the slurry overflow port 3 of intercommunication both.

[0020] The first partition plate 4 and the second partition plate 5 are sequentially and spacedly arranged in the sedimentation tank 1, so as to sequentially divide the internal space of the sedimentation tank 1 into the first sedimentation bin 6, the second sedimentation bin 7 and the third sedimentation bin 8 gradually close to the slurry tank 2. Figure 1 As shown in the figure, the sedimentation tank 1 is sequentially the first sedimentation bin 6, the second sedimentation bin 7 and the third sedimentation bin 8 from left to right, wherein the slurry tank 2 is immediately adjacent to the third sedimentation bin 8, and the slurry overflow port 3 intercommunicates the third sedimentation bin 8 and the slurry tank 2.

[0021] The first partition plate 4 is obliquely arranged, and the horizontal sectional area of the first sedimentation bin 6 gradually decreases from top to bottom; the top of the first sedimentation bin 6 serves as an inlet, and the unprecipitated slurry enters from the top of the first sedimentation bin 6, part of the slurry falls on the first partition plate 4 and flows down along the first partition plate 4 to the bottom of the first sedimentation bin 6.

[0022] The plate surface of the first partition plate 4 opposite to the first sedimentation bin 6 is spacedly provided with a plurality of flow distribution plates 9; the top and the bottom of the first partition plate 4 are respectively communicated with the second sedimentation bin 7.

[0023] As Figure 1 , Figure 2As shown, a plurality of sets of limiting members are arranged on the surface of the first partition plate 4 opposite to the first sedimentation bin 6, each set of limiting members comprising two limiting plates 10 arranged at intervals, and a mounting groove 11 is arranged between the two limiting plates 10; the flow distributor 9 is inserted into the mounting groove 11. The flow distributor 9 is slidingly fitted in the mounting groove 11 along the height direction. The flow distributor 9 can slide along the mounting groove 11 to adjust the relative height of the flow distributor 9 and the first partition plate 4. The bottom of the flow distributor 9 can be fixed to the bottom of the first sedimentation bin 6, so that the height of the first partition plate 4 can be slidingly adjusted to control the distance between the bottom of the first partition plate 4 and the bottom of the first sedimentation bin 6. When the distance increases, more coarse particles or rock slag at the bottom of the first sedimentation bin 6 can enter the second sedimentation bin 7, so that by adjusting the height of the bottom of the first partition plate 4, the thickness of the coarse particles or rock slag at the bottom of the first sedimentation bin 6 and the second sedimentation bin 7 can be controlled to adjust the mud sedimentation height of the first sedimentation bin 6 or the second sedimentation bin 7.

[0024] One side of the limiting plate 10 is provided with a fastener 12 connected with the flow distributor 9. The fastener 12 can be a bolt and a threaded hole. A plurality of threaded holes can be arranged on the limiting plate 10 and the flow distributor 9 along the height direction. The bolt is matched with the threaded holes at different heights to control the fitting height of the flow distributor 9 and the first partition plate 4.

[0025] The flow distributor 9 divides the first sedimentation bin 6 into smaller spaces. When the mud enters the first sedimentation bin 6, the influence of the newly entered mud on the mud already settled in the first sedimentation bin 6 is reduced under the limiting action of the flow distributor 9, thereby ensuring the sedimentation effect of the first sedimentation bin 6. When the liquid in the first sedimentation bin 6 is full, the liquid (mud) in the upper layer overflows from the overflow net 13 at the top of the first partition plate 4 to the second sedimentation bin 7. The overflow net 13 can prevent a part of the coarse particles or rock slag from entering the second sedimentation bin 7, thereby avoiding the coarse particles or rock slag from falling into the second sedimentation bin 7 to affect the sedimentation effect of the second sedimentation bin 7.

[0026] As shown in Figure 1 , Figure 3 The bottom of the second partition plate 5 is connected with an L-shaped connecting seat 14 opposite to the surface of the second sedimentation bin 7, and the L-shaped connecting seat 14 is also connected with the bottom of the second sedimentation bin 7. A plurality of horizontal support positioning members 15 are installed on the top of the second partition plate 5. The horizontal support positioning members 15 are arranged at intervals, and a connecting net plate 20 is connected between adjacent horizontal support positioning members 15. The connecting net plate 20 is not higher than the top of the second partition plate 5. The connecting net plate 20 is located in the third sedimentation bin 8 and between the second partition plate 5 and the flow baffle 22.

[0027] Specifically, the horizontal support positioning member 15 comprises a support plate 16, a support seat 17, a lower clamping plate 18 and an upper clamping plate 19.

[0028] The support plate 16 is horizontally set, with one end connected to the support base 17 and the other end connected to the upper clamping plate 19. The bottom of the support plate 16, and between the support base 17 and the upper clamping plate 19, is connected to the lower clamping plate 18.

[0029] The support base 17 is connected to the surface of the first partition 4 facing the second sedimentation tank 7, and the lower clamping plate 18 clamps and connects to the top of the second partition 5; the upper clamping plate 19 clamps and connects to the bottom of the baffle plate 22. The baffle plate 22 is positioned directly opposite the overflow port 3.

[0030] As the force-bearing component of the inclined first partition 4, the support base 17 transmits the pressure from the first partition 4 to the support plate 16. The support plate 16 transmits the vertical pressure and the horizontal pressure to the right to the second partition 5. The second partition 5 transmits the vertical pressure to the bottom of the second sedimentation tank 7. When the top of the second partition 5 is subjected to the horizontal pressure to the right, since the left side of the bottom of the second partition 5 is provided with the L-shaped connecting seat 14, the horizontal pressure to the right is converted into the horizontal pressure to the left of the L-shaped connecting seat 14, and finally transmitted to the bottom of the second sedimentation tank 7.

[0031] When it is necessary to clean the sedimentation tank 1, simply disassemble the horizontal support positioning piece 15, disconnect the connection between the lower clamping plate 18 and the second partition plate 5, and disconnect the connection between the support base 17 and the first partition plate 4. After the first partition plate 4 is no longer supported by the horizontal support positioning piece 15, lift the first partition plate 4 and the diversion plate 9 upwards to clean the first partition plate 4 and the diversion plate 9. After removing the connection between the L-shaped connecting seat 14 and the second partition plate 5, the entire sedimentation tank 1 can be cleaned.

[0032] After the mud in the second sedimentation chamber 7 is full, it overflows from the top to the connecting mesh plate 20 and flows down through the gaps in the connecting mesh plate 20 to the third sedimentation chamber 8. Since the bottom of the connecting mesh plate 20 is connected to multiple guide rods 21, and the distance between the bottom of the guide rods 21 and the bottom of the third sedimentation chamber 8 is less than 20cm, the mud flows along the guide rods 21 into the third sedimentation chamber 8, preventing it from dripping directly down from the connecting mesh plate 20 and reducing its impact on the sedimenting mud in the third sedimentation chamber 8. Once the mud in the third sedimentation chamber 8 reaches a certain height, it can flow out from the overflow port 3 to the mud tank 2. Alternatively, a mud pump can be installed inside the third sedimentation chamber 8 to pump the upper layer of mud from the third sedimentation chamber 8 into the mud tank 2. The height of the mud pump is lower than the height of the connecting mesh plate 20.

[0033] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are within its protection scope. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within its protection scope.

Claims

1. A quick precipitation structure equipment for circulating mud of a reverse circulation drilling machine, characterized in that, The application relates to a slurry overflow device for a slurry tank, which comprises a sedimentation tank, a slurry tank and a slurry overflow port connecting the sedimentation tank and the slurry tank; a first partition plate and a second partition plate are arranged in the sedimentation tank in sequence and are used for sequentially separating the internal space of the sedimentation tank into a first sedimentation bin, a second sedimentation bin and a third sedimentation bin which gradually approach the slurry tank; the first partition plate is arranged in an inclined mode, the horizontal sectional area of the first sedimentation bin gradually decreases from top to bottom, a plate surface of the first partition plate opposite to the first sedimentation bin is arranged with a plurality of flow distribution plates, the top and bottom of the first partition plate are connected with the second sedimentation bin, the bottom of the second partition plate is connected with the bottom of the sedimentation tank, the top of the second partition plate is lower than the top of the first partition plate, and a horizontal support positioning member is arranged on the top of the second partition plate. One end of the horizontal support positioning member is connected with the plate surface of the first partition plate opposite to the second sedimentation bin, and the other end is located in the third sedimentation bin and is connected with a flow blocking plate arranged on the top of the third sedimentation bin. The flow blocking plate is arranged opposite to the slurry overflow port.

2. The quick precipitation structure equipment for the mud circulation of the reverse drilling machine according to claim 1, characterized in that, The horizontal support positioning member has a plurality of horizontal support positioning members which are arranged at intervals, and a connecting net plate is arranged between adjacent horizontal support positioning members; the connecting net plate is not higher than the top of the second partition plate; the connecting net plate is located in the third sedimentation bin and is located between the second partition plate and the flow blocking plate.

3. The quick settling structure device for the mud circulation of the uphole drilling rig according to claim 2, characterized in that, A plurality of drainage rods are vertically hung on the bottom of the connecting net plate; the distance between the bottom of the drainage rod and the bottom of the third sedimentation bin is less than 20 cm.

4. The quick settling structure device for the mud circulation of the uphole drilling rig according to claim 2, characterized in that, The horizontal support positioning member comprises a support plate, a support base, a lower clamping plate and an upper clamping plate; one end of the support plate is connected with the support base, the other end is connected with the upper clamping plate, the bottom of the support plate and between the support base and the upper clamping plate is connected with the lower clamping plate; the support base is connected with the first partition plate, the lower clamping plate clamps and connects the top of the second partition plate, and the upper clamping plate clamps and connects the bottom of the flow blocking plate.

5. The quick settling structure device for the mud circulation of the uphole drilling rig according to claim 1, characterized in that, The bottom of the second sedimentation bin is connected with an L-shaped connecting base, and the L-shaped connecting base is connected with the second partition plate.

6. The quick settling structure device for the mud circulation of the uphole drilling rig according to claim 1, characterized in that, A plurality of limiting members are arranged at intervals on the plate surface of the first partition plate opposite to the first sedimentation bin, each limiting member comprises two limiting plates arranged at intervals, and a mounting groove is arranged between the two limiting plates; the flow distribution plate is inserted into the mounting groove.

7. The quick settling structure device for the mud circulation of the uphole drilling rig according to claim 6, characterized in that, The flow distribution plate is slidingly fitted in the mounting groove in the height direction.

8. The quick settling structure device for the mud circulation of the uphole drilling rig according to claim 7, characterized in that, One side of the limiting plate is provided with a fastener connected with the flow distribution plate.

9. The fast settling structure for the mud circulation of the uphole drilling rig of claim 1, wherein, The top of the first partition plate is provided with a overflow net connecting the first sedimentation bin and the second sedimentation bin.

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