CN111332710A - Vacuum water separation type anti-gushing spiral conveyor and gushing prevention method - Google Patents
Vacuum water separation type anti-gushing spiral conveyor and gushing prevention method Download PDFInfo
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- CN111332710A CN111332710A CN202010362488.8A CN202010362488A CN111332710A CN 111332710 A CN111332710 A CN 111332710A CN 202010362488 A CN202010362488 A CN 202010362488A CN 111332710 A CN111332710 A CN 111332710A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G33/00—Screw or rotary spiral conveyors
- B65G33/08—Screw or rotary spiral conveyors for fluent solid materials
- B65G33/14—Screw or rotary spiral conveyors for fluent solid materials comprising a screw or screws enclosed in a tubular housing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G33/00—Screw or rotary spiral conveyors
- B65G33/24—Details
Abstract
The invention discloses a vacuum water separation type anti-gushing spiral conveyor and an anti-gushing method, and solves the problem that the spiral conveyor in the prior art is prone to gushing. The invention comprises a spiral shaft, an outer cylinder and a vacuum water separating cylinder section, wherein the vacuum water separating cylinder section is connected to the outer cylinder, a high-pressure flushing mechanism, a vacuum water separating mechanism and a water stopping mechanism are arranged on the vacuum water separating cylinder section, the high-pressure flushing mechanism is connected with a high-pressure water source, and the vacuum water separating mechanism and the water stopping mechanism are connected with a vacuum pump station. The vacuum water separation cylinder section is composed of two layers, the inner cylinder section is provided with a plurality of groups of water through holes, the outer cylinder section is arranged in a closed structure, muddy water is automatically separated into the vacuum water separation cylinder section through the internal water pressure of the screw conveyor, and the muddy water is timely discharged through the vacuum water separation mechanism and the water stop mechanism, so that the spraying phenomenon is effectively avoided.
Description
Technical Field
The invention relates to the technical field of tunnel excavation, in particular to a vacuum water separation type anti-gushing spiral conveyor and an anti-gushing method.
Background
With the high-speed development of the development and utilization of the current underground space, the influence of the construction of the tunnel on the underground space is small, particularly the influence of the use of an urban tunnel boring machine on road traffic is small, so that the tunnel excavation by adopting the shield machine is widely applied, and particularly the tunnel excavation by adopting the earth pressure balance shield method has the advantages of safety, economy, high efficiency and the like. However, in some water-rich strata, the construction of the earth pressure balance shield method is greatly limited due to the limited pressure maintaining capacity of the screw conveyor, and the conditions of the screw conveyor such as gushing, slag discharge and splashing frequently occur in the water-rich strata, so that the tunnel construction is greatly influenced, the tunneling is slow, the slag soil improvement cost is high, and the tunnel pollution is caused.
The existing screw conveyor is complex in structure arrangement and large in occupied space, and can play a part of anti-gushing effect, but can not realize real-time slag-water separation and still has gushing phenomenon in a water-rich stratum, so that the tunneling efficiency and the construction safety are influenced.
Disclosure of Invention
Aiming at the defects in the background art, the invention provides a vacuum water separation type anti-gushing spiral conveyor and an anti-gushing method, which solve the problem that the spiral conveyor in the prior art is easy to gush.
The technical scheme of the invention is realized as follows: the utility model provides a gushing prevention screw conveyer of vacuum formula of bleeding, includes screw axis and outer barrel, still includes the vacuum shell ring of bleeding, and the sealed connection of vacuum shell ring of bleeding is on outer barrel, be equipped with high-pressure washing mechanism, vacuum mechanism of bleeding and stagnant water mechanism on the shell ring of bleeding in the vacuum, high-pressure washing mechanism is connected with the high-pressure water source, and vacuum mechanism of bleeding and stagnant water mechanism all are connected with vacuum pump station.
The vacuum water separating cylinder section comprises an inner cylinder section and an outer cylinder section which are connected in a sealing way, an annular chamber is formed between the inner cylinder section and the outer cylinder section, the high-pressure flushing mechanism, the vacuum water separating mechanism and the water stopping mechanism are all arranged in the annular chamber, and the water stopping mechanism is connected with the inner cylinder section and the outer cylinder section in a sealing way; and the lower part of the inner cylinder section is provided with a water through hole.
The two water stopping mechanisms are in a group, at least two groups of water stopping mechanisms are arranged in the annular cavity, the two groups of water stopping mechanisms are arranged on two sides of the water passing hole, and the vacuum water separating mechanism is positioned between the two water stopping mechanisms in the same group.
The inner cylinder section is fixedly and hermetically connected with the outer cylinder body and is arranged coaxially with the outer cylinder body.
The high-pressure washing mechanism comprises a high-pressure washing pipe, the high-pressure washing pipe is positioned in the annular cavity chamber and corresponds to the water passing holes, and the outer end part of the high-pressure washing pipe is connected with a high-pressure water source through a pipeline.
The vacuum water separating mechanism comprises a filter pipe, the filter pipe is connected to the inner wall of the outer cylinder section through a first pressing plate, and the filter pipe is axially arranged along the outer cylinder section.
And a filter mesh is arranged on the outer circumferential surface of the filter pipe, one end of the filter pipe is provided with a first flushing hole, and the other end of the filter pipe is connected with a vacuum pump station through a transition pipeline.
A first manual switch valve is arranged on the transition pipeline; and a plug screw plug is arranged in the first flushing hole for plugging.
The water stopping mechanism comprises a fixed pipe, the fixed pipe is hermetically connected between the inner cylinder section and the outer cylinder section through a second pressing plate and is axially arranged along the outer cylinder section; a rotating core pipe is rotatably arranged in the fixed pipe and is in sealing connection with the fixed pipe; one end of the rotating core pipe is provided with a second flushing hole, and the other end of the rotating core pipe is connected with a vacuum pump station through a connecting pipe.
The fixed pipe is provided with a first opening, the rotating core pipe is provided with a second opening, and the second opening can correspond to the first opening by rotating the rotating core pipe; and a rotary nut is arranged on the rotary core pipe, and a second manual switch valve is arranged on the connecting pipe.
A shield machine comprises the vacuum water-separating anti-gushing spiral conveyor.
A gushing prevention method of a vacuum water separation type gushing prevention screw conveyor comprises the following steps:
s1: connecting a vacuum water separating cylinder section to an outer cylinder of a spiral conveyor, forming an annular chamber between an inner cylinder section and an outer cylinder section of the vacuum water separating cylinder section, and uniformly distributing water passing holes at the bottom of the inner cylinder section;
s2: the two water stopping mechanisms are in a group, at least two groups of water stopping mechanisms are arranged in the annular cavity, the two groups of water stopping mechanisms are arranged on two sides of the water passing hole, the vacuum water separating mechanism is positioned between the two water stopping mechanisms in the same group, the annular cavity chamber is internally provided with the high-pressure washing mechanism, and the high-pressure washing mechanism is positioned below the water passing hole;
s3: in the process of transporting the muck, mud and water in the muck flow into an annular cavity chamber of the vacuum water separation barrel section through water holes under the action of a vacuum pump station started by a vacuum water separation mechanism to realize slag and water separation, then the mud and water are discharged through a water stop mechanism and the vacuum water separation mechanism after being filtered, and the muck is discharged through a screw conveyor;
s4: before the step S3 is started or during the slag soil transportation process, the water through hole, the water stopping mechanism or the vacuum water separating mechanism are washed by the high-pressure washing mechanism to prevent blockage.
The specific steps of step S3 are as follows:
s3.1: when meeting a high water pressure area, closing a slag outlet door of the screw conveyer, and automatically separating mud and water out of the slag soil in the screw conveyer into an annular cavity chamber of the vacuum water separation barrel section through internal water pressure;
s3.2: rotating a rotating core pipe of the water stopping mechanism to enable the rotating core pipe and a fixed pipe of the water stopping mechanism to rotate relatively, enabling a first opening of the fixed pipe to be matched with a second opening on the rotating core pipe, and enabling muddy water to be in contact with the vacuum water separating mechanism;
s3.3: starting a vacuum pump station connected with the rotary water stopping mechanism and the vacuum water separating mechanism, and discharging muddy water in the annular cavity chamber through the rotary water stopping mechanism and the vacuum water separating mechanism;
s3.4: when meeting a low water pressure area, a slag discharging door of the spiral conveyor is opened, slag soil is directly discharged through the spiral conveyor, the rotary core pipe is rotated, the first opening of the fixed pipe and the second opening on the rotary core pipe are staggered, the water stopping mechanism is closed, muddy water is isolated from the vacuum water separating mechanism, and the blockage of the vacuum water separating mechanism is avoided.
The vacuum water separation barrel section is composed of two layers, the inner barrel section is provided with a plurality of groups of water through holes, the outer barrel section is arranged in a closed structure, the vacuum pump station forms negative pressure inside the screw conveyer through the vacuum water separation mechanism, muddy water in the muck is automatically separated into the vacuum water separation barrel section, and the muddy water is discharged in time through the vacuum water separation mechanism and the water stop mechanism, so that the gushing phenomenon is effectively avoided. In addition, the on-off of the muddy water and the vacuum water separating mechanism is realized by adjusting the switch of the water stopping mechanism, the device is suitable for different water pressure layers, and meanwhile, the vacuum water separating mechanism is protected. According to the invention, the real-time separation of slag and water is realized in the transportation process of the screw conveyor through the vacuum water separation cylinder section, a chemical improvement or chemical consolidation water control scheme is not adopted, the cost is lower, the environment is friendly, the vacuum water separation mechanism and the water stop mechanism can be cleaned in the construction process, the blockage is prevented, the vacuum water separation mechanism and the water stop mechanism can be quickly replaced through the pressing plate after being damaged, and the construction safety is improved.
Drawings
In order to illustrate the embodiments of the invention more clearly, the drawings that are needed in the description of the embodiments will be briefly described below, it being apparent that the drawings in the following description are only some embodiments of the invention, and that other drawings may be derived from those drawings by a person skilled in the art without inventive effort.
Fig. 1 is a schematic view of the overall structure of the present invention.
FIG. 2 is a schematic view of the vacuum water separating cylinder section of the present invention.
Fig. 3 is a view from a-a in fig. 2.
FIG. 4 is a schematic view of the vacuum water-separating mechanism of the present invention.
Fig. 5 is a schematic view of the water stopping mechanism of the present invention.
Fig. 6 is a schematic diagram of the switching process of the water stopping mechanism.
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 obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
As shown in fig. 1, embodiment 1 is a vacuum water separation type anti-gushing screw conveyor, which comprises a screw shaft 30 and an outer cylinder 1, wherein the screw conveying shaft is positioned in the outer cylinder, and the screw conveying shaft is installed in the same way as the existing screw conveyor, the front part of the outer cylinder is provided with a slag inlet 26, and the rear part of the outer cylinder is provided with a slag outlet door; the spiral conveyor also comprises a vacuum water separating cylinder section 2, the vacuum water separating cylinder section 2 is hermetically connected to the outer cylinder body 1 and is communicated with the outer cylinder body coaxially, and one or more sections of vacuum water separating cylinder sections can be arranged on one spiral conveyor. The vacuum water separating cylinder section 2 is provided with a high-pressure washing mechanism 6, a vacuum water separating mechanism 9 and a water stopping mechanism 8, the high-pressure washing mechanism 6 is connected with a high-pressure water source, and the high-pressure washing mechanism is used for washing the inside of the vacuum water separating cylinder section. The vacuum water separating mechanism 9 and the water stopping mechanism 8 are both connected with the vacuum pump station 5. Under the action of the vacuum pump station, muddy water entering the vacuum water separating cylinder section is discharged through the vacuum water separating mechanism 9 and the water stopping mechanism 8, the vacuum pump station can be connected to a sewage tank through an output pipeline 16, and the muddy water is directly discharged into the sewage tank.
Further, as shown in fig. 2 and 3, the vacuum water separation cylinder section 2 comprises an inner cylinder section 2-1 and an outer cylinder section 2-2 which are hermetically connected, an annular chamber is formed between the inner cylinder section 2-1 and the outer cylinder section 2-2, and the inner cylinder section 2-1 is fixedly and hermetically connected with the outer cylinder 1 and is coaxially arranged with the outer cylinder 1. The lower part of the inner cylinder section 2-1 is provided with a water through hole 7, and muddy water enters the annular cavity chamber through the water through hole to realize real-time slag-water separation. The vacuum water separating cylinder section consists of two layers, the inner layer cylinder section is provided with a plurality of groups of water through holes, and the outer layer is of a closed structure. The high-pressure flushing mechanism 6, the vacuum water separating mechanism 9 and the water stopping mechanism 8 are all arranged in the annular chamber, the water stopping mechanism 8 is hermetically connected with the inner cylinder section 2-1 and the outer cylinder section 2-2, and the on-off of the muddy water and the vacuum water separating mechanism is controlled, namely the water stopping mechanism has a switching function, and the vacuum water separating mechanism and the water stopping mechanism are used for discharging the muddy water in the annular chamber.
Preferably, two stagnant water mechanisms 8 are a set of, are equipped with two sets of stagnant water mechanisms 8 in the annular cavity, and two sets of stagnant water mechanisms 8 symmetry set up in the both sides of crossing water hole 7, and from and vacuum water separation mechanism 9 is located between two stagnant water mechanisms 8 of the same group, can set up one set of or multiunit vacuum water separation mechanism 9 between two stagnant water mechanisms 8 of the same group, and quantity sets up as required. Two stagnant water mechanisms of the same group are arranged on the lower portion on the right side of the water passing hole, the other one is arranged on the upper portion on the right side of the water passing hole, and the other one is symmetrically arranged. The muddy water flowing out of the water passing holes enters between the two water stopping mechanisms 8 positioned at the lower part, and the muddy water is switched on and off by the contact of the muddy water and the vacuum water separating mechanism through the opening of the water stopping mechanisms 8.
As shown in fig. 4, in embodiment 2, the vacuum water-separating anti-spewing screw conveyor, the high-pressure flushing mechanism 6 includes a high-pressure flushing pipe 601, the high-pressure flushing pipe 601 is located in the annular chamber and corresponds to the water through holes 7, and the outer end of the high-pressure flushing pipe 601 is connected to a high-pressure water source through a pipeline. The water through holes can be washed through the high-pressure washing pipe, so that the dregs entering the vacuum water absorption cylinder section through the water through holes are prevented from being solidified on the water through holes, the water through holes are washed, and the blockage of the water through holes is prevented.
Further, the vacuum water separating mechanism 9 comprises a filter pipe 12, the diameter of a filter hole of the filter pipe 12 is matched according to the particle size of the slag soil, the filter pipe 12 is connected to the inner wall of the outer cylinder section 2-2 through a first pressing plate 14, and the first pressing plate is fixed to the inner wall of the outer cylinder section through a bolt 15 and is axially arranged along the outer cylinder section 2-2. The outer circumferential surface of the filter pipe 12 is provided with a filter mesh 11, and other filtering mechanisms can be adopted to filter the muddy water entering the filter pipe so as to prevent the filter pipe from being blocked. One end of the filter pipe 12 is provided with a first flushing hole 13, a plug screw plug is arranged in the first flushing hole 13, when the filter pipe needs to be flushed, the plug screw plug is taken down and connected with a high-pressure water pipe, the interior of the high-pressure water pipe is flushed, and blockage is prevented. The other end of the filter pipe 12 is connected with a vacuum pump station 5 through a transition pipeline 4. A first manual switch valve 3 is arranged on the transition pipeline 4; first manual on-off valve can adopt manual ball valve, realizes the control to 4 break-make of transition pipeline, and first manual on-off valve 3 also can adopt intelligent valve, realizes intelligent control.
Further, as shown in fig. 5 and 6, the water stopping mechanism 8 comprises a fixed pipe 17, the fixed pipe 17 is hermetically connected between the inner cylinder section 2-1 and the outer cylinder section 2-2 through a second pressing plate 20, and the second pressing plate 20 is fixed on the outer cylinder section through a fastening bolt 21 and is axially arranged along the outer cylinder section 2-2; the fixed pipe 17 is respectively connected with the inner cylinder section 2-1 and the outer cylinder section 2-2 in a sealing way, so that the on-off of muddy water in the annular cavity body is controlled. The fixed pipe 17 is provided with a rotary core pipe 18 in a rotating mode, the rotary core pipe 18 is connected with the fixed pipe 17 in a sealing mode, namely only when the second opening corresponds to the first opening, muddy water can enter the rotary core pipe 18. One end of the rotating core pipe 18 is provided with a second flushing hole 19, and the other end is connected with the vacuum pump station 5 through a connecting pipe 24. The second flushing hole 19 is internally provided with a plug screw plug, when the rotating core pipe 1 needs to be flushed, the plug screw plug is taken down and connected with a high-pressure water pipe to flush the inside of the high-pressure water pipe, so that blockage is prevented. The fixed pipe 17 is provided with a first opening, the rotating core pipe 18 is provided with a second opening, the second opening can correspond to the first opening by rotating the rotating core pipe 18, when the second opening corresponds to the first opening, the rotating core pipe is communicated with the fixed pipe, and when the second opening is staggered from the first opening, the rotating core pipe is cut off from the fixed pipe and is not communicated with the fixed pipe. The rotating core tube 18 is provided with a rotating nut 22, the rotating core tube is rotated in the fixed tube by rotating the rotating nut, and the connecting tube 24 is provided with a second manual switch valve 23. The second manual switch valve can adopt a manual ball valve to realize the control of the on-off of the connecting pipe 24, and can also adopt an intelligent valve to realize intelligent control. The matching of the core tube and the fixed tube can also adopt a unilateral air bag form, and the connection and disconnection of the core tube and the fixed tube are realized through inflation and deflation. The vacuum water separating pipe can be connected with a vacuum pump from the end part of the vacuum water separating cylinder section or the circumferential direction of the cylinder section, and the water stopping pipe can be connected with a high-pressure water pipe from the end part of the cylinder section or the circumferential direction of the cylinder section and arranged as required.
Example 3: a shield machine comprising the vacuum water-separation type anti-gushing screw conveyor of embodiment 2.
Example 4: a method for preventing gushing of a vacuum bleeding type gushing prevention screw conveyor as in example 2 or 3, comprising the steps of:
s1: connecting a vacuum water separating cylinder section 2 to an outer cylinder 1 of a screw conveyor, forming an annular chamber between an inner cylinder section 2-1 and an outer cylinder section 2-2 of the vacuum water separating cylinder section 2, and uniformly distributing water passing holes 7 at the bottom of the inner cylinder section 2-1;
s2: the two water stopping mechanisms 8 form a group, at least two groups of water stopping mechanisms 8 are arranged in the annular cavity, the two groups of water stopping mechanisms 8 are arranged on two sides of the water passing hole 7, the vacuum water separating mechanism 9 is positioned between the two water stopping mechanisms 8 in the same group, the high-pressure washing mechanism 6 is arranged in the annular cavity, and the high-pressure washing mechanism 6 is positioned below the water passing hole 7;
s3: in the process of transporting the dregs, mud and water in the dregs flows into an annular cavity chamber of the vacuum water separation barrel section 2 through water holes 7 under the action of a vacuum pump station started by the vacuum water separation mechanism 9 (negative pressure is formed in the vacuum water separation barrel section 2) to realize the separation of the dregs and the water, then the mud and water are discharged through a water stop mechanism 8 and the vacuum water separation mechanism 9 after being filtered, and the dregs are discharged through a screw conveyer;
s4: before the step S3 is started or during the slag soil transportation (or when the blockage occurs), the water through hole 7, the water stopping mechanism 8 or the vacuum water separating mechanism 9 is washed by the high-pressure washing mechanism 6 to prevent the blockage. When the water through hole is washed, the high-pressure washing pipe directly washes the water through hole, and when the water stopping mechanism is washed, the screw plug is plugged and taken down and connected with the high-pressure water pipe to wash the interior of the water stopping mechanism; when the vacuum water separating mechanism is washed, the plug screw on the filter pipe is plugged and taken down and is connected with the high-pressure water pipe to wash the interior of the filter pipe, so that the blockage is prevented.
The specific steps of step S3 are as follows:
s3.1: when meeting a high water pressure region, closing a slag outlet door 25 of the screw conveyer, and automatically separating muddy water out of the muck in the screw conveyer into an annular chamber of the vacuum water separation barrel section 2 through internal water pressure;
s3.2: rotating the rotating core tube 18 of the water stopping mechanism 8 to enable the rotating core tube 18 and the fixed tube 17 of the water stopping mechanism 8 to rotate relatively, enabling the first opening of the fixed tube 17 to be matched and communicated with the second opening on the rotating core tube 18, and enabling muddy water to be in contact with the vacuum water separating mechanism 9 when the water stopping mechanism 8 is opened;
s3.3: starting a vacuum pump station 5 connected with the rotary water stopping mechanism 8 and the vacuum water separating mechanism 9, and discharging muddy water in the annular cavity chamber through the rotary water stopping mechanism 8 and the vacuum water separating mechanism 9;
s3.4: when meeting a low water pressure area, the slag discharging door 25 of the spiral conveyor is opened, the slag soil is directly discharged through the spiral conveyor, the rotary core pipe 18 is rotated, the first opening of the fixed pipe 17 is staggered with the second opening on the rotary core pipe 18, the water stopping mechanism 8 is closed, the muddy water is isolated from the vacuum water separating mechanism 9, and the vacuum water separating mechanism 9 is prevented from being blocked due to contact with the muddy water.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (13)
1. The utility model provides a vacuum water separation formula prevents gushing screw conveyer, includes screw axis (30) and outer barrel (1), its characterized in that: the vacuum water separating device is characterized by further comprising a vacuum water separating cylinder section (2), wherein the vacuum water separating cylinder section (2) is connected to the outer cylinder body (1) in a sealing mode, a high-pressure washing mechanism (6), a vacuum water separating mechanism (9) and a water stopping mechanism (8) are arranged on the vacuum water separating cylinder section (2), the high-pressure washing mechanism (6) is connected with a high-pressure water source, and the vacuum water separating mechanism (9) and the water stopping mechanism (8) are connected with a vacuum pump station (5).
2. The vacuum dewatering type spewing-proof screw conveyor according to claim 1, wherein: the vacuum water separation barrel section (2) comprises an inner barrel section (2-1) and an outer barrel section (2-2) which are connected in a sealing manner, an annular chamber is formed between the inner barrel section (2-1) and the outer barrel section (2-2), the high-pressure flushing mechanism (6), the vacuum water separation mechanism (9) and the water stop mechanism (8) are all arranged in the annular chamber, and the water stop mechanism (8) is connected with the inner barrel section (2-1) and the outer barrel section (2-2) in a sealing manner; the lower part of the inner cylinder section (2-1) is provided with a water through hole (7).
3. The vacuum dewatering type spewing-proof screw conveyor according to claim 2, wherein: the two water stopping mechanisms (8) are in a group, at least two groups of water stopping mechanisms (8) are arranged in the annular cavity chamber, the two groups of water stopping mechanisms (8) are arranged on two sides of the water passing hole (7), and the vacuum water separating mechanism (9) is positioned between the two water stopping mechanisms (8) in the same group.
4. The vacuum dewatering type spewing-proof screw conveyor according to claim 3, wherein: the inner cylinder section (2-1) is fixedly and hermetically connected with the outer cylinder body (1) and is arranged coaxially with the outer cylinder body (1).
5. The vacuum dewatering type spewing-proof screw conveyor according to claim 3, wherein: the high-pressure flushing mechanism (6) comprises a high-pressure flushing pipe (601), the high-pressure flushing pipe (601) is located in the annular chamber and corresponds to the water passing holes (7), and the outer end of the high-pressure flushing pipe (601) is connected with a high-pressure water source through a pipeline.
6. The vacuum water-separating anti-gushing screw conveyor according to any one of claims 2 to 5, characterized in that: the vacuum water separating mechanism (9) comprises a filter pipe (12), and the filter pipe (12) is connected to the inner wall of the outer cylinder section (2-2) through a first pressing plate (14) and is axially arranged along the outer cylinder section (2-2).
7. The vacuum dewatering type spewing-proof screw conveyor according to claim 6, wherein: the outer circumferential surface of the filter pipe (12) is provided with a filter mesh (11), one end of the filter pipe (12) is provided with a first flushing hole (13), and the other end of the filter pipe is connected with a vacuum pump station (5) through a transition pipeline (4).
8. The vacuum dewatering type spewing-proof screw conveyor according to claim 7, wherein: a first manual switch valve (3) is arranged on the transition pipeline (4); a plug screw plug is arranged in the first flushing hole (13) for plugging.
9. The vacuum water-separating anti-gushing spiral conveyor according to any one of claims 2 to 5, 7 and 8, wherein: the water stopping mechanism (8) comprises a fixed pipe (17), the fixed pipe (17) is hermetically connected between the inner cylinder section (2-1) and the outer cylinder section (2-2) through a second pressing plate (20) and is axially arranged along the outer cylinder section (2-2); a rotary core pipe (18) is rotationally arranged in the fixed pipe (17), and the rotary core pipe (18) is hermetically connected with the fixed pipe (17); one end of the rotating core pipe (18) is provided with a second flushing hole (19), and the other end of the rotating core pipe is connected with a vacuum pump station (5) through a connecting pipe (24).
10. The vacuum dewatering type spewing-proof screw conveyor according to claim 9, wherein: the fixed pipe (17) is provided with a first opening, the rotating core pipe (18) is provided with a second opening, and the second opening can correspond to the first opening by rotating the rotating core pipe (18); and a rotating nut (22) is arranged on the rotating core pipe (18), and a second manual switch valve (23) is arranged on the connecting pipe (24).
11. The utility model provides a shield constructs machine which characterized in that: comprising a vacuum dewatering type spewing-proof screw conveyor according to claim 1 or 2 or 3 or 7 or 9.
12. A gushing prevention method of a vacuum water separation type gushing prevention screw conveyor is characterized by comprising the following steps: the method comprises the following steps:
s1: connecting a vacuum water separating cylinder section (2) to an outer cylinder (1) of a screw conveyor, forming an annular chamber between an inner cylinder section (2-1) and the outer cylinder section (2-2) of the vacuum water separating cylinder section (2), and uniformly distributing water passing holes (7) at the bottom of the inner cylinder section (2-1);
s2: the two water stopping mechanisms (8) form a group, at least two groups of water stopping mechanisms (8) are arranged in the annular cavity, the two groups of water stopping mechanisms (8) are arranged on two sides of the water passing hole (7), the vacuum water separating mechanism (9) is positioned between the two water stopping mechanisms (8) in the same group, the high-pressure washing mechanism (6) is arranged in the annular cavity, and the high-pressure washing mechanism (6) is positioned below the water passing hole (7);
s3: in the process of transporting the dregs, mud and water in the dregs flow into an annular cavity chamber of the vacuum water separation barrel section (2) through water holes (7) under the action of a vacuum pump station started by a vacuum water separation mechanism (9) to realize the separation of the dregs and water, then the mud and water are discharged through a water stop mechanism (8) and the vacuum water separation mechanism (9) after being filtered, and the dregs are discharged through a screw conveyer;
s4: before the step S3 is started or in the process of slag soil transportation, the water through hole (7), the water stopping mechanism (8) or the vacuum water separating mechanism (9) is washed by the high-pressure washing mechanism (6) to prevent blockage.
13. The blowout prevention method of the vacuum water separation type blowout prevention screw conveyor according to claim 12, characterized in that: the specific steps of step S3 are as follows:
s3.1: when meeting a high water pressure area, a slag outlet door (25) of the screw conveyer is closed, and muddy water is automatically separated out from the muck in the screw conveyer into an annular chamber of the vacuum water separation barrel section (2) through internal water pressure;
s3.2: rotating a rotating core pipe (18) of the water stopping mechanism (8), enabling the rotating core pipe (18) and a fixed pipe (17) of the water stopping mechanism (8) to rotate relatively, enabling a first opening of the fixed pipe (17) to be matched with a second opening on the rotating core pipe (18), and realizing the opening of the water stopping mechanism (8), wherein muddy water is in contact with the vacuum water separating mechanism (9);
s3.3: starting a vacuum pump station (5) connected with the rotary water stopping mechanism (8) and the vacuum water separating mechanism (9), and discharging muddy water in the annular cavity chamber through the rotary water stopping mechanism (8) and the vacuum water separating mechanism (9);
s3.4: when meeting a low water pressure area, a slag discharging door (25) of the spiral conveyor is opened, slag soil is directly discharged through the spiral conveyor, the rotary core pipe (18) is rotated, the first opening of the fixed pipe (17) and the second opening on the rotary core pipe (18) are staggered, the water stopping mechanism (8) is closed, muddy water is isolated from the vacuum water separating mechanism (9), and the vacuum water separating mechanism (9) is prevented from being blocked.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010362488.8A CN111332710A (en) | 2020-04-30 | 2020-04-30 | Vacuum water separation type anti-gushing spiral conveyor and gushing prevention method |
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| CN202010362488.8A CN111332710A (en) | 2020-04-30 | 2020-04-30 | Vacuum water separation type anti-gushing spiral conveyor and gushing prevention method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114135310A (en) * | 2021-11-25 | 2022-03-04 | 盾构及掘进技术国家重点实验室 | Anti-surging screw conveyor |
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2020
- 2020-04-30 CN CN202010362488.8A patent/CN111332710A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114135310A (en) * | 2021-11-25 | 2022-03-04 | 盾构及掘进技术国家重点实验室 | Anti-surging screw conveyor |
| CN114135310B (en) * | 2021-11-25 | 2023-11-21 | 盾构及掘进技术国家重点实验室 | Prevent gushing formula screw conveyer |
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