Pumping deslagging spiral conveying device

Abstract

The utility model relates to the technical field of tunnel shield tunneling construction, in particular to a pumping deslagging spiral conveying device which is used for conveying muck to a belt conveyor receiving hopper or a shield receiving device and comprises a spiral conveyor, a muck conveying pump, a receiving hopper, a first gate, a second gate, a third gate and a slurry outlet pipe. The spiral conveyor is communicated with the receiving hopper through a first gate; the receiving hopper is communicated with the muck conveying pump through a second gate; the material receiving hopper is provided with a material outlet right opposite to the slag receiving hopper of the belt conveyor; the third gate is arranged at the discharge hole and is used for opening or closing the discharge hole; and the slurry outlet pipe is communicated with the muck conveying pump and is arranged over against the shield material receiving device. By opening and closing the third gate and the second gate, spewing slurry and conventional muck are effectively shunted, a large amount of spewing slurry is efficiently conveyed through the muck conveying pump, the spewing problem of the shield tunneling machine in complex stratums is effectively solved, continuity of the tunneling process is guaranteed, and construction efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a tunnel shield tunneling construction technical field especially relates to a pump out of residue screw conveying device. BACKGROUND

[0002] The spiral conveyor is a key component of the earth pressure balance shield machine, which drives the movement and discharge of the muck through spiral movement, and adjusts the speed to control the discharge speed of the muck, so as to ensure the stability of the soil bin pressure. However, the complex and changeable geological conditions in shield construction, especially in water-rich or high water pressure stratum, often cause the spiral conveyor to appear gushing phenomenon, causing a large amount of high-pressure mud to be ejected from the earth outlet. These gushing muds will pollute the pipelines and segments on the shield machine, affect the construction progress and damage the construction environment.

[0003] The current common anti-gushing measures include adjusting the speed of the spiral conveyor or adjusting the opening of the gate to directly transport the muck, but this method often leads to the reduction of the muck discharge speed of the shield machine, thereby affecting the tunneling progress and reducing the overall construction efficiency. In recent years, some new anti-gushing systems have appeared, such as patents CN 110541716 A and CN 109488324 A use grating and mud pump for muck and water separation to prevent gushing. However, these systems have complex structure, large volume and high cost, and are prone to grid blockage in muck containing stones and mud, difficult to maintain, and difficult to apply in small diameter shield machines.

[0004] Therefore, it is necessary to provide a new pump out of residue screw conveying device to solve the above technical problems. UTILITY MODEL CONTENT

[0005] The main purpose of the utility model is to provide a pump out of residue screw conveying device, which aims to solve the problem of poor anti-gushing effect of the existing spiral conveyor during tunneling in water-rich stratum, thereby affecting the construction efficiency.

[0006] To achieve the above purpose, the utility model provides a pump out of residue screw conveying device for conveying muck to a belt conveyor receiving hopper or a shield receiving device, which comprises a spiral conveyor, a muck conveying pump, a receiving hopper, a first gate, a second gate, a third gate and a slurry outlet pipe. The spiral conveyor is in communication with the receiving hopper through the first gate; the receiving hopper is in communication with the muck conveying pump through the second gate; the receiving hopper is provided with a discharge port opposite to the belt conveyor receiving hopper; the third gate is arranged at the discharge port for opening or closing the discharge port; the slurry outlet pipe is in communication with the muck conveying pump, and the slurry outlet pipe is arranged opposite to the shield receiving device.

[0007] Optionally, the material receiving hopper comprises a material receiving part, a material discharging part and a communication part, the top of the material receiving part is communicated with the bottom of the screw conveyor through the first gate, one end of the material discharging part is communicated with the material receiving part, and the other end is provided with the discharging opening; the communication part is communicated with the material receiving part or the material discharging part, and the communication part is connected with the muck conveying pump through the second gate.

[0008] Optionally, the number of the communication parts is two or more, and each communication part is arranged on the two sides of the material receiving part or the material discharging part; the muck conveying pump is arranged in one-to-one correspondence with the number of the communication parts, and each communication part is communicated with the corresponding muck conveying pump through the second gate.

[0009] Optionally, the bottom wall of the material receiving part is arranged to be inclined downward along the horizontal direction; and / or, the bottom wall of the material discharging part is arranged to be inclined downward along the horizontal direction.

[0010] Optionally, the first gate, the second gate and the third gate are all hydraulic opening gates.

[0011] Optionally, the third gate comprises a gate body and a gate plate, the gate body is arranged at the discharging opening, and the gate body forms a hollow part for exposing the discharging opening, the inner wall of the hollow part forms a limiting groove, and the top of the gate body is provided with a socket communicated with the limiting groove; the gate plate can be inserted into the limiting groove through the socket to seal the discharging opening.

[0012] Optionally, the pumping and discharging screw conveying device further comprises a soil pressure sensor and a control module, the soil pressure sensor is arranged on the screw conveyor and used for monitoring the pressure in the screw conveyor in real time; and the control module is electrically connected with the soil pressure sensor, the first gate, the second gate and the third gate.

[0013] Optionally, the muck conveying pump comprises a material box and a pump body, the material box is communicated with the material receiving hopper and the slurry discharging pipe respectively, the pump body is arranged on the material box, and the pump body can adjust the air pressure in the material box.

[0014] In the technical scheme of the utility model, by opening and closing of the third gate and the second gate, the gushing mud and the conventional muck can be effectively divided, the gushing mud can be efficiently and massively conveyed through the muck conveying pump, the problem of gushing of the shield machine in the complex stratum is effectively solved, the continuity of the tunneling process is ensured, and the construction efficiency is improved. Moreover, the pumping and discharging screw conveying device in the utility model has the advantages of simple and compact structure, small size, convenient manufacturing and installation, and reasonable layout of the internal space of the shield machine. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description, obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained according to the structures shown in these drawings without creative labor.

[0016] Fig. 1 The structure diagram of the slag pumping screw conveying device in the embodiment of the present application is shown.

[0017] Fig. 2 The side view of the slag pumping screw conveying device in the embodiment of the present application is shown.

[0018] Fig. 3 The structure diagram of the receiving hopper in the embodiment of the present application is shown.

[0019] Explanation of reference numerals:

[0020] 1, screw conveyor; 2, muck conveying pump; 2.1, material box; 2.2, pump body; 3, receiving hopper; 3.1, receiving part; 3.2, discharging part; 3.3, communication part; 3.3.1, discharging port; 4, first gate; 5, second gate; 6, third gate; 6.1, gate main body; 6.1.1, limiting groove; 6.1.2, socket; 6.2, gate plate; 7, slurry discharging pipe; 8, earth pressure sensor.

[0021] The realization, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0022] The embodiments of the present application will be described in detail below with reference to the accompanying drawings, but the present application can be implemented in various different ways limited and covered by the claims.

[0023] The present application provides a slag pumping screw conveying device, which aims to solve the problem that the existing screw conveyor has poor blowout prevention effect when tunneling in water-rich stratum, thereby affecting the construction efficiency.

[0024] As shown in the drawings, Figs. 1-3 Fig. 1 ​The arrow direction in the figure is the direction of the muck conveying, a pumping muck screw conveying device for conveying muck to the belt conveyor receiving hopper 3 or the shield receiving device, the pumping muck screw conveying device comprising a screw conveyor 1, a muck conveying pump 2, a receiving hopper 3, a first gate 4, a second gate 5, a third gate 6 and a slurry outlet pipe 7, the screw conveyor 1 being communicated with the receiving hopper 3 through the first gate 4; the receiving hopper 3 being communicated with the muck conveying pump 2 through the second gate 5; the receiving hopper 3 being provided with a discharge opening 3.3.1 opposite to the belt conveyor receiving muck hopper; the third gate 6 being arranged at the discharge opening 3.3.1 for opening or closing the discharge opening 3.3.1; the slurry outlet pipe 7 being communicated with the muck conveying pump 2, and the slurry outlet pipe 7 being arranged opposite to the shield receiving device. In actual operation, when the muck pressure is too high, the third gate 6 is closed, the second gate 5 is opened, the muck and water enter the muck conveying pump 2 through the pipeline, and are discharged into the muck slurry outlet pipe 7 under the driving of the muck conveying pump 2, and finally conveyed to the shield receiving device; when the muck pressure at the output end of the screw conveyor 1 returns to the normal range, the third gate 6 is reopened, the second gate 5 is closed, and the muck enters the belt conveyor receiving muck hopper through the third gate 6. In this embodiment, the pumping muck discharge can effectively prevent the screw machine from spouting, keep the tunnel clean and realize continuous tunneling, and the pumping muck discharge and the gate muck discharge can meet the tunneling requirements in complex strata, realize shield tunneling when spouting, and effectively solve the problem that the existing screw conveyor 1 has poor anti-spouting effect when tunneling in water-rich strata, thereby affecting the construction efficiency.

[0025] In this embodiment, an additional driving device for conveying spouting muck is also included, and the conventional gate muck discharge mode is combined to realize the functions of anti-spouting and synchronous tunneling.

[0026] The receiving hopper 3 comprises a receiving part 3.1, a discharge part 3.2 and a communication part 3.3, the top of the receiving part 3.1 is communicated with the bottom of the screw conveyor 1 through the first gate 4, one end of the discharge part 3.2 is communicated with the receiving part 3.1, and the other end is provided with a discharge opening 3.3.1; the communication part 3.3 is communicated with the receiving part 3.1 or the discharge part 3.2, and the communication part 3.3 is connected with the muck conveying pump 2 through the second gate 5. One communication part 3.3 is correspondingly provided with one second gate 5, and the receiving hopper 3 can realize the transition between the screw conveyor and the muck conveying pump 2 and the discharge opening 3.3.1 to ensure the normal conveying of the muck.

[0027] Further, the number of the communication parts 3.3 is two or more, and each of the communication parts 3.3 is arranged on the two sides of the receiving part or the discharging part; the number of the muck conveying pumps 2 is consistent with that of the communication parts 3.3, and the communication parts 3.3 are arranged in one-to-one correspondence with the muck conveying pumps 2, and the communication parts 3.3 are communicated with the corresponding muck conveying pumps 2 through the second gate 5. When the muck conveying pump 2 or the pipeline is maintained and repaired, one side of the second gate 5 and the conveying pump can be closed, while the other side continues to discharge the muck and the conveying power of the other side is increased, which does not affect the construction excavation. Through the cooperation of the double pumps and the gate, effective muck discharging in the water-rich stratum and the ordinary soil pressure stratum is realized, the gushing is prevented, the synchronous excavation of the shield is ensured, the construction stagnation caused by maintenance is reduced, and the excavation efficiency is improved. Multiple or multiple driving can also be used to realize the function of synchronous maintenance and excavation.

[0028] Further, the bottom wall of the receiving part 3.1 is arranged to be inclined downward along the horizontal direction; and the bottom wall of the discharging part 3.2 is arranged to be inclined downward along the horizontal direction. The bottom wall arranged to be inclined downward along the horizontal direction can make the muck entering the receiving hopper 3 flow along the bottom wall to the direction of the discharge port 3.3.1, so as to ensure the smoothness of discharging.

[0029] Preferably, the first gate 4, the second gate 5 and the third gate 6 are all hydraulic opening gates. Without manual operation, the automatic opening and closing of the gates can be realized, the workload of the workers is effectively reduced, and automatic operation is realized. In the embodiment, the hydraulic opening gate is a hydraulic knife gate valve.

[0030] In another example of the embodiment, the third gate 6 includes a gate body 6.1 and a gate plate 6.2, the gate body 6.1 is arranged at the discharge port 3.3.1, and the gate body 6.1 forms a hollow part exposed by the discharge port 3.3.1, the inner wall of the hollow part forms a limiting groove 6.1.1, and the top of the gate body 6.1 is provided with a socket 6.1.2 communicated with the limiting groove 6.1.1; the gate plate 6.2 can be inserted into the limiting groove 6.1.1 through the socket 6.1.2 to seal the discharge port 3.3.1. The worker inserts the gate plate 6.2 into the limiting groove 6.1.1 to seal the discharge port 3.3.1. Since the flow rate of the muck at the discharge port 3.3.1 is large, the impact and wear of the gate are also large, therefore, the third gate 6 at the discharge port 3.3.1 adopts a manual opening and closing structure, which ensures the closing function of the gate and reduces the loss in the opening and closing process.

[0031] In addition, the slag pumping screw conveying device further comprises a soil pressure sensor 8 and a control module, the soil pressure sensor 8 is arranged on the screw conveyor 1 and is used for monitoring the pressure in the screw conveyor 1 in real time, and the control module is electrically connected with the soil pressure sensor 8, the first gate 4, the second gate 5 and the third gate 6 respectively. The control module can control the opening and closing of the first gate 4, the second gate 5 and the third gate 6 according to the pressure detected by the soil pressure sensor 8, so as to solve the gushing problem of the shield machine in the complex stratum, ensure the continuity of the tunneling process, and further improve the construction efficiency.

[0032] In the embodiment, the slag conveying pump 2 comprises a material box 2.1 and a pump body 2.2, the material box 2.1 is communicated with the receiving hopper 3 and the slurry outlet pipe 7 respectively, the pump body 2.2 is arranged on the material box 2.1, and the pump body 2.2 can adjust the air pressure in the material box 2.1. By controlling the opening and closing of the second gate 5 and the third gate 6, the gushing mud and the conventional slag can be effectively divided, and the pump body 2.2 can efficiently and massively convey the gushing mud in the material box 2.1 to the shield receiving device through the slurry outlet pipe 7.

[0033] The above only describes the preferred embodiments of the utility model, and does not limit the patent range of the utility model, and any equivalent structural transformation made under the utility model concept of the utility model, or direct / indirect application in other related technical fields is included in the patent protection range of the utility model.

Claims

1. A pumping-out slurry screw conveyor for conveying slurry to a belt conveyor hopper (3) or a shield receiving device, characterized in that The pumping-out residue screw conveying device comprises a screw conveyor (1), a residue conveying pump (2), a receiving hopper (3), a first gate (4), a second gate (5), a third gate (6) and a slurry outlet pipe (7), the screw conveyor (1) is communicated with the receiving hopper (3) through the first gate (4); the receiving hopper (3) is communicated with the residue conveying pump (2) through the second gate (5); the receiving hopper (3) is provided with a discharge port (3.3.1) facing the residue receiving hopper of the belt conveyor; the third gate (6) is arranged at the discharge port (3.3.1) and used for opening or closing the discharge port (3.3.1); the slurry outlet pipe (7) is communicated with the residue conveying pump (2), and the slurry outlet pipe (7) faces the shield receiving device.

2. The pump-out slag screw conveyor as claimed in claim 1, characterized in that, The receiving hopper (3) comprises a receiving part (3.1), a discharge part (3.2) and a communication part (3.3), the top of the receiving part (3.1) is communicated with the bottom of the screw conveyor (1) through the first gate (4), one end of the discharge part (3.2) is communicated with the receiving part (3.1), and the other end is provided with the discharge port (3.3.1); the communication part (3.3) is communicated with the receiving part (3.1) or the discharge part (3.2), and the communication part (3.3) is connected with the residue conveying pump (2) through the second gate (5).

3. The pump-out slag screw conveyor as claimed in claim 2, characterized in that, The number of the communication parts (3.3) is two or more, and each communication part (3.3) is arranged on the two sides of the receiving part (3.1) or the discharge part (3.2); the residue conveying pump (2) is arranged in consistent with the number of the communication parts (3.3) and one-to-one correspondence, and the communication parts (3.3) are respectively communicated with the corresponding residue conveying pumps (2) through the second gates (5).

4. The pump-out slag screw conveyor as claimed in claim 3, characterized in that, The bottom wall of the receiving part (3.1) is arranged to be inclined downward along the horizontal direction; and / or, the bottom wall of the discharge part (3.2) is arranged to be inclined downward along the horizontal direction.

5. A pump-out-of-slag screw conveyor as claimed in claim 4, characterized in that, The first gate (4), the second gate (5) and the third gate (6) are all hydraulic opening gates.

6. The pumped-out slag screw conveyor as claimed in claim 4, characterized in that, The third gate (6) comprises a gate body (6.1) and a gate plate (6.2), the gate body (6.1) is arranged at the discharge port (3.3.1), the gate body (6.1) forms a hollow part for the discharge port (3.3.1) to expose, the inner wall of the hollow part forms a limiting groove (6.1.1), the top of the gate body (6.1) is provided with a socket (6.1.2) communicated with the limiting groove (6.1.1); the gate plate (6.2) can be inserted into the limiting groove (6.1.1) through the socket (6.1.2) to seal the discharge port (3.3.1). ​ 7. A pump-out-of-slag screw conveyor as claimed in any one of claims 1 to 5, characterized in that The pumping-out slag screw conveying device further comprises a soil pressure sensor (8) and a control module, the soil pressure sensor (8) is arranged on the screw conveyor (1) and used for monitoring the pressure in the screw conveyor (1) in real time, and the control module is electrically connected with the soil pressure sensor (8), the first gate (4), the second gate (5) and the third gate (6) respectively.

8. A pump-out-of-slag screw conveyor as claimed in any one of claims 1 to 6, characterized in that The muck conveying pump (2) comprises a material box (2.1) and a pump body (2.2), the material box (2.1) is communicated with the receiving hopper (3) and the slurry outlet pipe (7) respectively, the pump body (2.2) is arranged on the material box (2.1), and the pump body (2.2) can adjust the air pressure in the material box (2.1).

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