Rotary opening and closing filtering device for shield tunneling machine

Abstract

The utility model relates to the technical field of shield tunneling machine filtering, in particular to a rotary opening and closing filtering device for a shield tunneling machine, which comprises a shield tunneling machine body, a gate, a first air cylinder, a rotary unit, a filter screen and a slurry discharge pipe, the shield tunneling machine body is provided with a slurry cabin and an air cushion cabin, the first air cylinder is started to drive the gate to enter a groove, and then an open groove is opened; at the moment, slurry in the slurry cabin enters the air cushion cabin, when the shield tunneling machine body is located in a soft soil stratum without rock, the rotating unit is started, the filter screen is driven to rotate, the filter screen is longitudinally arranged in the air cushion cabin, a filter opening in the filter screen does not face the open groove, the slurry is not filtered and blocked, and gravel in the slurry is filtered; therefore, the opening and closing of the filter screen can be adjusted, so that the mud pump can be adapted to different stratums, the application range is enlarged, and the mud pump is more convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of shield machine filtering, in particular to a rotating opening and closing filtering device for a shield machine. Background Art

[0002] During the construction of the shield machine, a large amount of debris or pebbles are generated. The large-diameter pebbles have a large mass and are likely to cause impact damage to the equipment itself when they fall into the secondary mixer and the belt conveyor.

[0003] The prior art patent CN207478930U discloses a shield construction slag screening device, which separates large-diameter pebbles from slag through a filter net, and then guides the large-diameter pebbles into a guide tube through the guiding effect of the filter net. After passing through the guide tube, the large-diameter pebbles enter the transport component and are transported out by the transport component, and the remaining slag is transported by a secondary mixer and then by a belt conveyor, thereby achieving safe transportation of large-diameter and large-mass pebbles and effectively preventing impact damage to shield equipment by pebbles.

[0004] However, in the aforementioned prior art, it is impossible to adjust the state of the filter according to different strata. When located in a rocky stratum, if no filtering is performed, the rock will cause serious wear and tear on the mud pump and reduce its service life. When located in a soft soil stratum without rock, the mud delivery efficiency will be reduced due to the obstruction of the filter, which is very inconvenient. Utility Model Content

[0005] The purpose of the utility model is to provide a rotating opening and closing filtering device for a shield machine, which solves the problem in the prior art that the state of the filter screen cannot be adjusted according to different strata. When located in a rocky stratum, if no filtering is performed, the rock will cause serious wear to the mud pump and reduce its service life. When located in a soft soil stratum without rock, the mud transportation efficiency will be reduced due to the obstruction of the filter screen, which is very inconvenient.

[0006] To achieve the above-mentioned purpose, the utility model provides a rotating opening and closing filtering device for a shield machine, comprising a shield machine body, a gate, a first cylinder, a rotating unit, a filter screen and a slurry discharge pipe, the shield machine body having a mud and water chamber and an air cushion chamber, the shield machine body also having a slot and a groove, the first cylinder being fixedly connected to the shield machine body and being located inside the groove, the output end of the first cylinder being fixedly connected to the gate, the gate being located inside the slot, the gate being adapted to the groove and the slot, the rotating unit being arranged inside the air cushion chamber, the filter screen being arranged on the rotating unit, the slurry discharge pipe being arranged inside the shield machine body, and one end of the slurry discharge pipe being connected to the air cushion chamber.

[0007] Wherein, the rotating unit includes a motor and a rotating shaft, the motor is fixedly connected to the shield machine body and is located inside the air cushion cabin, and the two ends of the rotating shaft are fixedly connected to the output end of the motor and the filter respectively.

[0008] Wherein, the rotating opening and closing filtering device for a shield machine further comprises a locking unit, and the locking unit is arranged inside the air cushion cabin.

[0009] Wherein, the locking unit includes a second cylinder and a locking block, the second cylinder is fixedly connected to the shield machine body and is located on the inner wall of the shield machine body, the output end of the second cylinder is fixedly connected to the locking block, and the locking block and the rotating shaft are mutually abutted.

[0010] Wherein, the slurry discharge pipe is located on a side of the filter screen away from the gate.

[0011] The utility model discloses a rotary opening and closing filter device for a shield machine. The device is started by the first cylinder to drive the gate to enter the groove and then open the slot. At this time, the mud in the mud and water tank enters the air cushion tank. When the shield machine body is in a soft soil layer without rocks, the rotating unit is started to drive the filter screen to rotate, so that the filter screen is longitudinally arranged in the air cushion tank, and the filter port on the filter screen is no longer facing the slot, so the mud is not filtered and blocked, thereby increasing the mud flow rate. When in a rocky layer, the rotating unit is started again to drive the filter screen to rotate, so that the filter screen is transversely arranged in the air cushion tank, and the filter port on the filter screen faces the slot to filter the gravel in the mud, thereby preventing the stones from causing damage to the mud pump. The filter screen can be opened and closed and adjusted to adapt to different layers, increase the scope of use, and be more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0013] Figure 1 It is an overall structural schematic diagram of the utility model.

[0014] Figure 2 The utility model Figure 1 A magnified view of the local structure at A.

[0015] 1- shield machine body, 2- gate, 3- first cylinder, 4- filter screen, 5- slurry discharge pipe, 6- mud water chamber, 7- air cushion chamber, 8- slot, 9- groove, 10- motor, 11- rotating shaft, 12- second cylinder, 13- locking block. DETAILED DESCRIPTION

[0016] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0017] See also Figure 1 and Figure 2 The utility model provides a rotating opening and closing filtering device for a shield machine, comprising a shield machine body 1, a gate 2, a first cylinder 3, a rotating unit, a filter screen 4 and a slurry discharge pipe 5. The shield machine body 1 has a mud and water chamber 6 and an air cushion chamber 7. The shield machine body 1 also has a slot 8 and a groove 9. The first cylinder 3 is fixedly connected to the shield machine body 1 and is located inside the groove 9. The output end of the first cylinder 3 is fixedly connected to the gate 2, and the gate 2 is located inside the slot 8. The gate 2 is adapted to the groove 9 and the slot 8. The rotating unit is arranged inside the air cushion chamber 7, the filter screen 4 is arranged on the rotating unit, the slurry discharge pipe 5 is arranged inside the shield machine body 1, and one end of the slurry discharge pipe 5 is connected to the air cushion chamber 7.

[0018] In this embodiment, the first cylinder 3 is started to drive the gate 2 into the groove 9, and then the slot 8 is opened. At this time, the mud in the mud and water tank 6 enters the air cushion tank 7. When the shield machine body 1 is in a soft soil layer without rocks, the rotating unit is started to drive the filter screen 4 to rotate, so that the filter screen 4 is longitudinally arranged in the air cushion tank 7, and the filter port on the filter screen 4 is no longer facing the slot 8, so the mud is not filtered and blocked, and the mud flow rate is increased. When in a rocky formation, the rotating unit is started again to drive the filter screen 4 to rotate, so that the filter screen 4 is transversely arranged in the air cushion tank 7, and the filter port on the filter screen 4 is facing the slot 8, so that the gravel in the mud is filtered to prevent the mud pump from being damaged by the stones. In this way, the opening and closing of the filter screen 4 can be adjusted to adapt to different formations, increase the scope of use, and be more convenient to use.

[0019] Furthermore, the rotating unit includes a motor 10 and a rotating shaft 11. The motor 10 is fixedly connected to the shield machine body 1 and is located inside the air cushion cabin 7. Both ends of the rotating shaft 11 are fixedly connected to the output end of the motor 10 and the filter 4 respectively.

[0020] In this embodiment, the motor 10 is started to drive the rotating shaft 11 to rotate, and drive the filter screen 4 to rotate.

[0021] Furthermore, the rotating opening and closing filtering device for a shield machine also includes a locking unit, and the locking unit is arranged inside the air cushion cabin 7.

[0022] In this embodiment, the locking unit locks the rotating shaft 11 to prevent accidental rotation during filtering.

[0023] Furthermore, the locking unit includes a second cylinder 12 and a locking block 13, the second cylinder 12 is fixedly connected to the shield machine body 1 and is located on the inner wall of the shield machine body 1, the output end of the second cylinder 12 is fixedly connected to the locking block 13, and the locking block 13 and the rotating shaft 11 are mutually abutted.

[0024] In this embodiment, the second cylinder 12 is started to drive the locking block 13 to move, and the locking block 13 resists the rotating shaft 11 to prevent it from rotating.

[0025] Furthermore, the slurry discharge pipe is located on a side of the filter screen away from the gate.

[0026] What is disclosed above is only one or more preferred embodiments of the present application, and cannot be used to limit the scope of rights of the present application. Ordinary technicians in this field can understand that all or part of the processes of implementing the above embodiments and equivalent changes made according to the claims of the present application are still within the scope covered by the present application.

Claims

1. A rotating opening and closing filtering device for a shield machine, characterized in that: It includes a shield machine body, a gate, a first cylinder, a rotating unit, a filter screen and a slurry discharge pipe. The shield machine body has a mud and water chamber and an air cushion chamber. The shield machine body also has a slot and a groove. The first cylinder is fixedly connected to the shield machine body and is located inside the groove. The output end of the first cylinder is fixedly connected to the gate, and the gate is located inside the slot. The gate is adapted to the groove and the slot. The rotating unit is arranged inside the air cushion chamber, the filter screen is arranged on the rotating unit, the slurry discharge pipe is arranged inside the shield machine body, and one end of the slurry discharge pipe is connected to the air cushion chamber.

2. The rotating opening and closing filtering device for a shield machine according to claim 1, characterized in that: The rotating unit comprises a motor and a rotating shaft. The motor is fixedly connected to the shield machine body and is located inside the air cushion cabin. Two ends of the rotating shaft are fixedly connected to the output end of the motor and the filter screen respectively.

3. The rotating opening and closing filtering device for a shield machine according to claim 2, characterized in that: The rotating opening and closing filtering device for a shield machine further comprises a locking unit, and the locking unit is arranged inside the air cushion cabin.

4. The rotating opening and closing filtering device for a shield machine according to claim 3, characterized in that: The locking unit includes a second cylinder and a locking block. The second cylinder is fixedly connected to the shield machine body and is located on the inner wall of the shield machine body. The output end of the second cylinder is fixedly connected to the locking block. The locking block and the rotating shaft abut against each other.

5. The rotating opening and closing filtering device for a shield machine according to claim 4, characterized in that: The slurry discharge pipe is located at a side of the filter screen away from the gate.

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