CN213865895U - Shield muck dewatering equipment - Google Patents
Shield muck dewatering equipment Download PDFInfo
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- CN213865895U CN213865895U CN202022260176.4U CN202022260176U CN213865895U CN 213865895 U CN213865895 U CN 213865895U CN 202022260176 U CN202022260176 U CN 202022260176U CN 213865895 U CN213865895 U CN 213865895U
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Abstract
The utility model discloses a shield constructs dregs dewatering equipment, including cell body and vacuum pump, the cell body passes through the porous disk and separates for the dregs room on upper portion and the negative pressure room of lower part, the vacuum pump pass through the negative pressure pipe with the negative pressure mouth of negative pressure room is connected, be equipped with the electric osmosis stake in the cell body, lie in on the electric osmosis stake the bottom department of dregs room is equipped with the cathode contact, lie in on the electric osmosis stake the top of cathode contact still is equipped with the positive pole contact, cathode contact and positive pole contact are connected with DC power supply's negative pole and positive pole respectively. The set of dehydration equipment adopts a mode of combining electroosmosis with vacuum preloading, can improve the dehydration efficiency to a greater extent, and does not need a larger floor area.
Description
Technical Field
The utility model belongs to the technical field of the shield constructs dregs dehydration, specific theory relates to a shield constructs dregs dehydration equipment.
Background
With the rapid increase of urban population in China, underground rail transit becomes a main means for solving the problem of traffic deterioration, and a shield method becomes a preferred construction method of an urban tunnel due to safety, rapidness and economy in the urban tunnel construction process. In the shield tunneling process, in order to balance the stress on the tunnel face, additives such as water, bentonite, foam, high-molecular polymer and the like are added into a soil bin of the shield tunneling machine, so that a large amount of water-rich muck can be generated in the shield tunneling process, the shield muck is directly filled due to high fluidity and poor stability and has serious potential safety hazard, and in addition, if the shield muck is not treated, the shield muck is directly transported, so that the leakage is easily caused in the transportation process, the urban appearance is influenced, and the environment pollution is caused. The existing muck dehydration equipment cannot well meet the dehydration treatment of a large amount of shield muck due to large occupied area, low efficiency and poor dehydration effect.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a main aim at provides a shield constructs dregs dewatering equipment, this dewatering equipment can great degree the improvement dewatering efficiency, improves dehydration effect, satisfies the shield structure dregs transportation better and stacks the requirement.
The utility model provides a technical scheme that its technical problem adopted as follows:
the utility model provides a shield constructs dregs dewatering equipment, includes cell body and vacuum pump, the cell body passes through the porous disk and separates for the dregs room on upper portion and the negative pressure room of lower part, the vacuum pump pass through the negative pressure pipe with the negative pressure mouth of negative pressure room is connected, be equipped with the electric osmosis stake in the cell body, lie in on the electric osmosis stake the bottom department of dregs room is equipped with the cathode contact, lie in on the electric osmosis stake the top of cathode contact still is equipped with the anode contact, cathode contact and anode contact are connected with DC power supply's negative pole and positive pole respectively.
Specifically, the electroosmosis pile is composed of a hydraulic cylinder, the hydraulic cylinder is vertically arranged in the negative pressure chamber, a cylinder barrel penetrates through the water permeable plate, the cathode contact is arranged on the cylinder barrel, and the anode contact is arranged at the top end of a piston rod of the hydraulic cylinder.
Specifically, the cylinder barrel is provided with a convex ring for supporting the water permeable plate.
Specifically, the electroosmosis piles are uniformly arranged in the groove body, the cathode contact and the anode contact are uniformly arranged around the pile body of the electroosmosis pile, and the vacuum instrument is arranged on the negative pressure chamber.
Specifically, the corrosion resistance of the anode contact is 1-2 times that of the cathode contact.
The dehydration steps of the shield muck dehydration equipment are as follows:
s1: pouring the shield muck to be dehydrated into a muck chamber;
s2: lifting the electroosmosis pile to a position 5-10 cm below the upper surface of the residue soil, and electrifying direct current;
s3: starting a vacuum pump to enable the negative pressure chamber to form negative pressure and pumping out water in the negative pressure chamber;
s4: after the residue soil is dehydrated, the electroosmosis pile is descended to the water permeable plate, the direct current power supply is cut off, and the vacuum pump is closed;
s5: and digging out the dewatered muck from the muck chamber and transporting away.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. the electroosmosis combined vacuum preloading mode is adopted for dehydration, an upper double-layer structure and a lower double-layer structure are matched, water in the residue soil is subjected to downward gravity, electroosmosis force and negative pressure suction force at the same time, the specific electroosmosis pile can discharge free water and part of weak combined water at the same time, the efficient dehydration efficiency is achieved, and the electroosmosis pile is particularly remarkable for silt and clay with high fine particle content and low permeability.
2. The groove body adopts an upper-lower double-layer structure, free water in the muck can automatically flow into the lower-layer negative pressure chamber under the action of gravity by utilizing the permeable plate, so that the dehydration cost of the shield muck dehydration equipment is lower, and the occupied area of the muck pool is smaller due to the special upper-lower structure.
Drawings
Fig. 1 is an overall schematic view of a shield muck dewatering device according to an embodiment of the present invention;
FIG. 2 is a top view of a shield muck dewatering device according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a shield muck dewatering process according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of the shield of the embodiment of the present invention after the dewatering of the shield muck is completed;
fig. 5 is a schematic view of an electroosmotic pile according to an embodiment of the present invention;
fig. 6 is a schematic view of a vacuum meter according to an embodiment of the present invention.
Wherein: 1-a groove body; 101-a water permeable plate; 2-an electroosmosis pile; 201-convex ring; 202-a cathode contact; 203-a piston rod; 204-anode contact; 3-an electro-hydraulic control system; 4-a vacuum gauge; 401-pressure probe; 5-a negative pressure pipe; 6-a vacuum pump; 7-control line.
Detailed Description
In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following detailed description will be given with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1-6, a shield muck dewatering device comprises a tank body 1 and a vacuum pump 6, an inner cavity of the tank body 1 is divided into an upper muck chamber and a lower negative pressure chamber by a water permeable plate 101, the vacuum pump 6 is connected with a negative pressure port of the negative pressure chamber by a negative pressure pipe 5, an electroosmosis pile 2 is arranged in the tank body 1, a cathode contact 202 is arranged at the bottom end of the muck chamber on the electroosmosis pile 2, an anode contact 204 is also arranged above the cathode contact 202 on the electroosmosis pile 2, and the cathode contact 202 and the anode contact 204 are respectively connected with the negative pole and the positive pole of a direct current power supply of an electro-hydraulic control system 3.
Specifically, the electroosmosis pile 2 comprises three-level hydraulic cylinder, the hydraulic cylinder passes through control line 7 and electric hydraulic control system 3 electric connection, positive pole contact 204 has been arranged on the piston rod 203 top of hydraulic cylinder, negative pole contact 202 has been arranged on the cylinder top of hydraulic cylinder, the hydraulic cylinder bottom is located negative pressure chamber bottom to pass porous disk 101, the bulge loop 201 of its waist holds in the palm in porous disk 101 below, the high position of positive pole contact 204 in the dregs room can be adjusted through the hydraulic cylinder, thereby can make things convenient for the clearance of the indoor dregs of dregs.
The electroosmosis piles 2 are uniformly arranged in the tank body 1, the cathode contacts 202 and the anode contacts 204 are uniformly arranged 3-6 around the pile body of the electroosmosis piles 2, the corrosion resistance of the anode contacts 204 is 1-2 times of that of the cathode contacts 202, a vacuum instrument 4 is arranged on the negative pressure chamber, a pressure probe 401 of the vacuum instrument 4 is inserted into the negative pressure chamber, and a current control switch for controlling the on-off of a direct-current power supply and a lifting control switch for controlling the lifting of a hydraulic cylinder are arranged on the electro-hydraulic control system 3.
Referring to fig. 1 to 6, the dehydration step of the shield muck dehydration device is as follows:
s1: pouring the shield muck to be dehydrated into a muck chamber;
s2: lifting the electroosmosis pile 2 to a position 5-10 cm below the upper surface of the muck through an electrohydraulic control system 3, and electrifying direct current;
s3: starting the vacuum pump 6 to form negative pressure in the negative pressure chamber and pumping out water in the negative pressure chamber;
s4: after the residue soil is dehydrated, the electroosmosis pile 2 is descended to the water permeable plate 101 through the electrohydraulic control system 3, the direct current power supply is cut off, and the vacuum pump 6 is closed;
s5: and digging out the dewatered dregs from the double-layer dregs pool and transporting away.
This set of dewatering equipment adopts the mode dehydration of vacuum preloading jointly of electroosmosis to bilayer structure about the cooperation, the water in the dregs receives decurrent gravity, electroosmosis power and negative pressure suction simultaneously, and the peculiar electroosmosis stake can discharge free water and partial weak binding water simultaneously, can improve dehydration efficiency to a great extent, and need not great area. The method is particularly remarkable for sludge and clay with high fine particle content and low permeability. The groove body adopts an upper-lower double-layer structure, free water in the muck can automatically flow into the lower-layer negative pressure chamber under the action of gravity by utilizing the permeable plate, so that the dehydration cost of the shield muck dehydration equipment is lower, and the occupied area of the muck pool is smaller due to the special upper-lower structure.
The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (4)
1. The utility model provides a shield constructs dregs dewatering equipment, includes cell body and vacuum pump, its characterized in that: the tank body is divided into an upper muck chamber and a lower negative pressure chamber by a water permeable plate, the vacuum pump is connected with a negative pressure port of the negative pressure chamber by a negative pressure pipe, an electroosmosis pile is arranged in the tank body, a cathode contact is arranged at the bottom end of the muck chamber on the electroosmosis pile, an anode contact is also arranged above the cathode contact on the electroosmosis pile, and the cathode contact and the anode contact are respectively connected with the negative electrode and the positive electrode of a direct current power supply;
the electroosmosis pile is composed of a hydraulic cylinder, the hydraulic cylinder is vertically arranged in the negative pressure chamber, a cylinder barrel penetrates through the water permeable plate, the cathode contact is arranged on the cylinder barrel, and the anode contact is arranged at the top end of a piston rod of the hydraulic cylinder;
the electroosmosis piles are uniformly arranged in the groove body, and the cathode contacts and the anode contacts are uniformly arranged around the pile body of the electroosmosis pile.
2. The shield muck dewatering device of claim 1, wherein: and the cylinder barrel is provided with a convex ring for supporting the permeable plate.
3. The shield muck dewatering device of claim 1 or 2, wherein: and a vacuum instrument is arranged on the negative pressure chamber.
4. The shield muck dewatering device of claim 1 or 2, wherein: the corrosion resistance of the anode contact is 1-2 times that of the cathode contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022260176.4U CN213865895U (en) | 2020-10-12 | 2020-10-12 | Shield muck dewatering equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022260176.4U CN213865895U (en) | 2020-10-12 | 2020-10-12 | Shield muck dewatering equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213865895U true CN213865895U (en) | 2021-08-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022260176.4U Active CN213865895U (en) | 2020-10-12 | 2020-10-12 | Shield muck dewatering equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213865895U (en) |
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2020
- 2020-10-12 CN CN202022260176.4U patent/CN213865895U/en active Active
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