A tunnel construction wastewater separation and treatment device

Abstract

The present invention provides a tunnel construction wastewater separation and treatment device, including a skid-mounted frame assembly and a primary separation mechanism. The skid-mounted frame assembly includes a sludge removal skid-mounted frame, a water treatment skid-mounted frame, a sludge discharge skid-mounted frame, and a pump skid-mounted frame. The sludge removal skid-mounted frame and the water treatment skid-mounted frame are both installed on the upper surface of the sludge discharge skid-mounted frame. In the present invention, the primary separation mechanism uses a spiral guide plate to cause the incoming wastewater to form a vortex inside the sludge removal tank, so as to utilize the centrifugal force of the vortex to make the sediment carried in the wastewater move outward, reduce its flow rate, and deposit it at the bottom of the sludge removal tank. Then, the water guide mechanism cooperates with the water inlet pipe to extract the wastewater after separating the sediment at the center of the vortex and transport it to the inside of the secondary treatment mechanism for secondary treatment, thereby avoiding the occurrence of blockage caused by excessive sediment carried in the wastewater. Moreover, the rotating third auger column can be used to push the sediment deposited in the sludge removal tank into the inside of the sludge discharge mechanism, ensuring the effect of sediment separation in the sludge removal tank.

Description

Technical Field

[0001] The present invention relates to a wastewater treatment device, specifically a separation and treatment device for tunnel construction wastewater, belonging to the technical field of construction wastewater treatment. Background Art

[0002] Tunnel construction wastewater mainly includes tunnel water inrush, drilling and blasting wastewater, shotcrete and grouting wastewater, etc. It usually has the characteristics of high suspended solid content, complex chemical composition, and difficult treatment. If directly discharged without treatment, it is likely to pollute the surrounding environment.

[0003] A Chinese patent with the patent name of a tunnel wastewater treatment and processing device (publication number: CN117883831A) discloses a wastewater treatment and processing technology. It uses a cylinder to drive a cleaning unit to slide on the side wall of a conical sedimentation tank to clean the inner wall of the conical sedimentation tank, so that the sludge layer attached to the inner wall of the conical sedimentation tank is separated from the conical sedimentation tank and re-enters the sludge reflux cycle, improving the efficiency of the water treatment box for tunnel construction wastewater. The cleaning plate can be made to lie flat on the inner wall of the conical sedimentation tank and maintain a downward displacement action by driving the driving arm to rotate, so that the sludge attached to the conical sedimentation tank can be scraped off and dispersed and then re-enter the sludge reflux cycle, preventing the reduction of water treatment efficiency due to frequent cleaning cycles; however, the overall device is an integrated structure, which not only has a relatively high transportation cost, but also uses the sedimentation method to separate sediment, and the treatment efficiency is relatively low.

[0004] A Chinese patent with the patent name of a green and environment-friendly tunnel construction wastewater recycling device (publication number: CN118811905A) discloses a construction wastewater recycling technology. Through a coarse filter screen and a fine filter screen, solid particles in the wastewater can be effectively removed, ensuring a relatively high cleanliness of the wastewater before entering the mixing tank. At the same time, through an adjustment component, the filter component can be conveniently lifted to the top of the sedimentation tank to clean the solid particles on the filter screen, improving the filtration efficiency and reducing the frequency and workload of manual cleaning; however, although this device can initially filter solid particles using the coarse filter screen, the solid particles are still likely to clog the coarse filter screen, which will not only affect the treatment efficiency, but also require regular cleaning, resulting in a relatively high overall use cost. Therefore, a separation and treatment device for tunnel construction wastewater is proposed. Summary of the Invention

[0005] In view of this, the present invention provides a separation and treatment device for tunnel construction wastewater to solve or alleviate the technical problems existing in the prior art and at least provide a beneficial option.

[0006] The technical solution of the embodiment of the present invention is realized as follows: A tunnel construction wastewater separation and treatment device includes a skid frame assembly and a primary separation mechanism. The skid frame assembly includes a sludge dewatering skid, a water treatment skid, a sludge discharge skid, and a pump skid.

[0007] Among them, the sludge dewatering skid and the water treatment skid are both installed on the upper surface of the sludge discharge skid. The pump skid is arranged on one side of the sludge dewatering skid. The primary separation mechanism is installed on the top of the inner wall of the sludge dewatering skid. A secondary treatment mechanism is installed on the top of the inner wall of the water treatment skid. A sludge discharge mechanism is installed on the top of the inner wall of the sludge discharge skid. A synchronous pushing mechanism and a water guiding mechanism are installed between the primary separation mechanism and the secondary treatment mechanism. A pressure-bearing mechanism is installed at the bottom of the inner wall of the secondary treatment mechanism.

[0008] Among them, the primary separation mechanism includes a sludge dewatering tank, a spiral guide plate, and a water inlet pipe. The synchronous pushing mechanism includes a third auger column and a water stirring frame.

[0009] Among them, the sludge dewatering tank is fixedly connected to the top of the inner wall of the sludge dewatering skid. The spiral guide plate is fixedly connected to the inner wall of the sludge dewatering tank. The water inlet pipe is fixedly connected to the top of the inner wall of the sludge dewatering tank. The third auger column is arranged in the middle of the inner wall of the sludge dewatering tank. The water stirring frame is fixedly connected to the middle of the outer wall of the third auger column.

[0010] Further preferably, the primary separation mechanism further includes an external connecting pipe, a sewage inlet pipe, and a sewage discharge pipe.

[0011] Among them, one end of the external connecting pipe is communicated with the top of the outer wall of the water inlet pipe. The other end of the external connecting pipe penetrates through the inner wall of the sludge dewatering tank. One end of the sewage inlet pipe is communicated with the top of the outer wall of the sludge dewatering tank. One end of the sewage discharge pipe is communicated with the bottom of the sludge dewatering tank.

[0012] Further preferably, the secondary treatment mechanism includes a water treatment tank, a support grid, modified fiber balls, a water purification filter cartridge, a waste discharge pipe, a drain valve, and a cylindrical water passing airbag.

[0013] Among them, the water treatment tank is fixedly connected to the top of the inner wall of the water treatment skid. The support grid is fixedly connected to the middle of the inner wall of the water treatment tank. The outer wall of the cylindrical water passing airbag is fixedly connected to the inner wall of the support grid. The water purification filter cartridge is arranged inside the support grid and installed at the middle of the inner wall of the water treatment tank. The modified fiber balls are filled between the water purification filter cartridge and the cylindrical water passing airbag. One end of the waste discharge pipe is communicated with the bottom of the water treatment tank. One end of the drain valve is communicated with the bottom of the outer wall of the water treatment tank.

[0014] Further preferably, the sludge discharging mechanism includes a first motor, a first auger column, a plurality of water passing micropores, a sliding carriage, a plug column, a first spring, a sludge discharging pipe, two branch connecting pipes and a dehydration cylinder;

[0015] Among them, the dehydration cylinder is fixedly connected to the top of the inner side wall of the sludge discharging skid frame, the first motor is installed at one end of the dehydration cylinder, the first auger column is arranged inside the dehydration cylinder, one end of the first auger column is fixedly connected to the output shaft of the first motor, the sliding carriage is fixedly connected to the other end of the dehydration cylinder, the outer side wall of the plug column is slidably connected to the inner side wall of the dehydration cylinder near one end of the sliding carriage, the inner side wall of the plug column is slidably connected to the outer side wall of the sliding carriage, the first spring is fixedly connected between the sliding carriage and the plug column, the sludge discharging pipe is communicated with the bottom of the outer side wall of the dehydration cylinder near one end of the sliding carriage, the two branch connecting pipes are symmetrically communicated with the top of the outer side wall of the dehydration cylinder, one end of one branch connecting pipe is flange-connected to the sewage discharging pipe, and one end of the other branch connecting pipe is flange-connected to the impurity discharging pipe.

[0016] Further preferably, the synchronous pushing mechanism further includes a driving mechanism, a first pulley, a transmission belt, a second pulley and a second auger column;

[0017] Among them, the driving mechanism is installed on one side of the upper surface of the water treatment tank, the first pulley is installed in the middle of the upper surface of the water treatment tank, the second pulley is installed in the middle of the upper surface of the sludge dewatering tank, the transmission belt is sleeved on the outer side walls of the second pulley and the transmission belt, one end of the third auger column penetrates through the inner side wall of the sludge dewatering tank and is fixedly connected to the inner side wall of the second pulley, the second auger column is arranged on the inner side wall of the water purification filter cylinder, one end of the second auger column penetrates through the inner side wall of the water treatment tank and is fixedly connected to the inner side wall of the first pulley, and a plurality of the water passing micropores are all opened on the outer side walls of the first auger column and the second auger column.

[0018] Further preferably, the water guiding mechanism includes a water pump, a water guiding connecting pipe and a water guiding conveying pipe;

[0019] Among them, the mounting frame is fixedly connected to one side of the upper surface of the water treatment tank, the second motor is installed in the middle of the upper surface of the mounting frame, the gear is rotatably connected between the upper surface of the water treatment tank and the mounting frame, the output shaft of the second motor is fixedly connected to one end of the gear, and the outer side wall of the gear is meshed with the bottom of the outer side wall of the first pulley.

[0020] Further preferably, the water guiding mechanism includes a water pump, a water guiding connecting pipe and a water guiding conveying pipe;

[0021] Among them, the water pump is installed in the middle of the inner side wall of the water treatment skid. One end of the water guiding connecting pipe is flange-connected to one end of the outer connecting pipe, the other end of the water guiding connecting pipe communicates with the water inlet of the water pump, one end of the water guiding conveying pipe communicates with the water outlet of the water pump, and the other end of the water guiding conveying pipe penetrates the inner side walls of the water treatment tank, the support grid, the cylindrical water passing airbag, and the modified fiber ball and extends into the interior of the water purification filter cartridge.

[0022] Further preferably, the pressure-bearing mechanism includes a support frame, a sealing baffle, a guide shaft, and a second spring;

[0023] Among them, the support frame is fixedly connected to the middle of the inner side wall of the waste discharge pipe. The outer side wall of the sealing baffle is slidably connected to the bottom of the inner side wall of the water treatment tank. One end of the guide shaft is fixedly connected to the bottom of the sealing baffle. The outer side wall of the guide shaft is slidably connected to the inner side wall of the support frame. The second spring is sleeved on the outer side of the guide shaft, and the second spring is fixedly connected between the sealing baffle and the support frame.

[0024] Further preferably, a sewage pump is installed at the bottom of the inner side wall of the pump skid. The water outlet of the sewage pump communicates with a sewage guiding pipe. One end of the sewage guiding pipe penetrates the inner side wall of the pump skid and is flange-connected to one end of the sewage inlet pipe.

[0025] Further preferably, a pressing mechanism is installed on the top of the water treatment tank. The pressing mechanism includes an electric push rod, an air storage cylinder, a piston plate, and an air guiding pipe;

[0026] Among them, the electric push rod is installed on one side of the upper surface of the water treatment tank. The air storage cylinder is fixedly connected to one side of the top of the inner wall of the water treatment tank. The outer side wall of the piston plate is slidably connected to the inner side wall of the air storage cylinder. The piston rod of the electric push rod is fixedly connected to the top end of the piston plate. One end of the air guiding pipe communicates with the bottom of the air storage cylinder, and the other end of the air guiding pipe penetrates the support grid and communicates with the interior of the cylindrical water passing airbag. The top of the outer side wall of the water treatment tank communicates with a backwashing pipe.

[0027] Due to the adoption of the above technical solutions in the embodiments of the present invention, it has the following advantages:

[0028] 1. The present invention uses a spiral guide plate through a primary separation mechanism to form a vortex inside the sludge removal tank for the incoming wastewater, so as to utilize the centrifugal force of the vortex to make the sediment carried in the wastewater move outward, reduce its flow rate, and deposit it at the bottom of the sludge removal tank. Then, through the water guiding mechanism and the water diversion pipe, the wastewater after separating sediment at the center of the vortex is pumped out and transported to the inside of the secondary treatment mechanism for secondary treatment, thus avoiding the occurrence of blockage caused by excessive sediment carried in the wastewater, and the sediment deposited in the sludge removal tank can be pushed into the inside of the sludge discharge mechanism by the rotating third auger column, ensuring the effect of sediment separation in the sludge removal tank.

[0029] 2. The present invention uses a synchronous pushing mechanism to push the impurities separated during the treatment processes of the primary separation mechanism and the secondary treatment mechanism into the inside of the sludge discharge mechanism, and then the sludge discharge mechanism squeezes and dehydrates the impurities and discharges the impurities after dehydration is completed, so that during the tunnel construction process, the treated water and the separated impurities can be reused according to requirements.

[0030] 3. The present invention performs skid-mounted treatment on the entire equipment, enabling the entire equipment to be quickly assembled at the construction site, or the entire equipment can be disassembled to separately transport the sludge removal skid frame, water treatment skid frame, sludge discharge skid frame, and pump skid frame, saving transportation costs, and the structures of the equipment after disassembly are relatively small and more convenient for handling operations.

[0031] The above summary is only for the purpose of the specification and is not limited in any way. In addition to the above-described illustrative aspects, embodiments, and features, further aspects, embodiments, and features of the present invention will be readily apparent by referring to the drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] 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 required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0033] Figure 1 is the structural diagram of the present invention;

[0034] Figure 2 is the cross-sectional structural schematic diagram of the first perspective of the present invention;

[0035] Figure 3 is for the present invention Figure 2 is the enlarged schematic diagram of the structure of Area A of the present invention;

[0036] Figure 4 is for the present inventionFigure 2 Schematic enlarged view of the B area structure;

[0037] Figure 5 Cross-sectional structure schematic diagram of the second perspective of the present invention;

[0038] Figure 6 Axonometric view of the sludge removal skid of the present invention;

[0039] Figure 7 Axonometric view of the water treatment skid of the present invention;

[0040] Figure 8 Cross-sectional structure schematic diagram of the water treatment skid of the present invention;

[0041] Figure 9 Axonometric view of the cylindrical water passing airbag of the present invention;

[0042] Figure 10 Axonometric view of the sludge discharge skid of the present invention;

[0043] Figure 11 Axonometric view of the pump skid of the present invention;

[0044] Figure 12 Side view structure schematic diagram of the present invention.

[0045] Reference numerals: 1, skid assembly; 2, primary separation mechanism; 3, secondary treatment mechanism; 4, sludge discharge mechanism; 5, synchronous pushing mechanism; 6, pressing mechanism; 7, water guiding mechanism; 8, pressure bearing mechanism; 101, sludge removal skid; 102, water treatment skid; 103, sludge discharge skid; 104, pump skid; 201, sludge removal tank; 202, spiral guide plate; 203, water inlet pipe; 204, external connection pipe; 205, sewage inlet pipe; 206, sewage discharge pipe; 301, water treatment tank; 302, support grid; 303, modified fiber ball; 304, water purification filter cartridge; 305, impurity discharge pipe; 306, drain valve; 307, cylindrical water passing airbag; 401, first motor; 402, first auger column; 403, water passing micropores; 404, sliding frame; 405, plug column; 406, first spring; 407, sludge discharge pipe; 408, branch connection pipe; 409, dehydration cylinder; 501, driving mechanism; 502, first pulley; 503, transmission belt; 504, second pulley; 505, second auger column; 506, third auger column; 507, water stirring frame; 511, mounting frame; 512, second motor; 513, gear; 601, electric push rod; 602, air storage cylinder; 603, piston plate; 604, air guide pipe; 701, water pump; 702, water guiding connection pipe; 703, water guiding delivery pipe; 801, support frame; 802, sealing baffle; 803, guiding shaft; 804, second spring; 91, backwashing pipe; 92, sewage pump; 93, sewage guiding pipe. Detailed implementation manners

[0046] In the following text, only some exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present invention. Therefore, the accompanying drawings and the description are considered to be exemplary in nature rather than restrictive.

[0047] It should be noted that terms such as "first", "second", "symmetric", "array", etc. are only used for the purpose of distinguishing descriptions and position descriptions, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first", "symmetric", etc. may explicitly or implicitly include one or more of such features; similarly, when certain features are not limited in quantity by words such as "two", "three", etc., it should be noted that such features also belong to those that explicitly or implicitly include one or more feature quantities.

[0048] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0049] As Figures 1 - 12 shown, the embodiment of the present invention provides a tunnel construction wastewater separation and treatment device, including a skid-mounted frame assembly 1 and a primary separation mechanism 2. The skid-mounted frame assembly 1 includes a sludge removal skid 101, a water treatment skid 102, a sludge discharge skid 103, and a pump skid 104.

[0050] Among them, both the sludge removal skid 101 and the water treatment skid 102 are installed on the upper surface of the sludge discharge skid 103. The pump skid 104 is arranged on one side of the sludge removal skid 101. The primary separation mechanism 2 is installed at the top of the inner side wall of the sludge removal skid 101. A secondary treatment mechanism 3 is installed at the top of the inner side wall of the water treatment skid 102. A sludge discharge mechanism 4 is installed at the top of the inner side wall of the sludge discharge skid 103. A synchronous pushing mechanism 5 and a water guiding mechanism 7 are installed between the primary separation mechanism 2 and the secondary treatment mechanism 3. A pressure-bearing mechanism 8 is installed at the bottom of the inner side wall of the secondary treatment mechanism 3.

[0051] Among them, the primary separation mechanism 2 includes a sludge removal tank 201, a spiral guide plate 202, a water inlet pipe 203, an external connecting pipe 204, a sewage inlet pipe 205, and a sewage discharge pipe 206. The synchronous pushing mechanism 5 includes a third auger column 506 and a water stirring frame 507.

[0052] Among them, the sludge removal tank 201 is fixedly connected to the top of the inner side wall of the sludge removal skid frame 101, the spiral guide plate 202 is fixedly connected to the inner side wall of the sludge removal tank 201, the water inlet pipe 203 is fixedly connected to the top of the inner side wall of the sludge removal tank 201, the third auger column 506 is arranged in the middle of the inner side wall of the sludge removal tank 201, one end of the external connection pipe 204 communicates with the top of the outer side wall of the water inlet pipe 203, the other end of the external connection pipe 204 penetrates through the inner side wall of the sludge removal tank 201, one end of the sewage inlet pipe 205 communicates with the top of the outer side wall of the sludge removal tank 201, one end of the sewage discharge pipe 206 communicates with the bottom of the sludge removal tank 201, and the water stirring frame 507 is fixedly connected to the middle of the outer side wall of the third auger column 506; A sewage pump 92 is installed at the bottom of the inner side wall of the pump skid frame 104, the drainage port of the sewage pump 92 is communicated with a sewage guide pipe 93, and one end of the sewage guide pipe 93 penetrates through the inner side wall of the pump skid frame 104 and is flange-connected to one end of the sewage inlet pipe 205.

[0053] In one embodiment, the secondary treatment mechanism 3 includes a water treatment tank 301, a support grid 302, modified fiber balls 303, a water purification filter cartridge 304, a waste discharge pipe 305, a drain valve 306, and a cylindrical water passing airbag 307;

[0054] Among them, the water treatment tank 301 is fixedly connected to the top of the inner side wall of the water treatment skid frame 102, the support grid 302 is fixedly connected to the middle of the inner side wall of the water treatment tank 301, the outer side wall of the cylindrical water passing airbag 307 is fixedly connected to the inner side wall of the support grid 302, the water purification filter cartridge 304 is arranged inside the support grid 302 and installed in the middle of the inner side wall of the water treatment tank 301, the modified fiber balls 303 are filled between the water purification filter cartridge 304 and the cylindrical water passing airbag 307, one end of the waste discharge pipe 305 communicates with the bottom of the water treatment tank 301, and one end of the drain valve 306 communicates with the bottom of the outer side wall of the water treatment tank 301.

[0055] The residual solid particles in the wastewater are intercepted by the water purification filter cartridge 304, and then the modified fiber balls 303 are used to intercept the residual suspended solids, colloids, organic substances and some heavy metal ions in the wastewater by virtue of their large specific surface area and pore structure. The provided support grid 302 is used to provide a supporting force for the outer side of the cylindrical water passing airbag 307.

[0056] In one embodiment, the sludge discharge mechanism 4 includes a first motor 401, a first auger column 402, a number of water passing micropores 403, a sliding frame 404, a plug column 405, a first spring 406, a sludge discharge pipe 407, two branch connection pipes 408, and a dehydration cylinder 409;

[0057] Among them, the dehydration cylinder 409 is fixedly connected to the top of the inner side wall of the sludge discharge skid frame 103. The first motor 401 is installed at one end of the dehydration cylinder 409. The first auger column 402 is arranged inside the dehydration cylinder 409. One end of the first auger column 402 is fixedly connected to the output shaft of the first motor 401. The carriage 404 is fixedly connected to the other end of the dehydration cylinder 409. The outer side wall of the plug column 405 is slidably connected to the inner side wall of the dehydration cylinder 409 near one end of the carriage 404. The inner side wall of the plug column 405 is slidably connected to the outer side wall of the carriage 404. The first spring 406 is fixedly connected between the carriage 404 and the plug column 405. The sludge discharge pipe 407 is communicated with the bottom of the outer side wall of the dehydration cylinder 409 near one end of the carriage 404. Two branch pipes 408 are symmetrically communicated with the top of the outer side wall of the dehydration cylinder 409. One end of one branch pipe 408 is flange-connected to the sewage discharge pipe 206, and one end of the other branch pipe 408 is flange-connected to the impurity discharge pipe 305.

[0058] The output shaft of the first motor 401 drives the first auger column 402 to rotate. The rotating first auger column 402 drives the sediment and other solid particles collected in the dehydration cylinder 409 to move, so as to concentrate the sediment and other solid particles at the plug column 405. Then, the rotating first auger column 402 cooperates with the sediment and other solid particles to squeeze one end of the plug column 405. When the pressure borne by the plug column 405 reaches the bearing limit of the first spring 406, the plug column 405 moves along the carriage 404 under the action of the pressure, and drives the first spring 406 to be compressed.

[0059] In one embodiment, the synchronous pushing mechanism 5 further includes a driving mechanism 501, a first pulley 502, a transmission belt 503, a second pulley 504 and a second auger column 505;

[0060] Among them, the driving mechanism 501 is installed on one side of the upper surface of the water treatment tank 301. The first pulley 502 is installed in the middle of the upper surface of the water treatment tank 301. The second pulley 504 is installed in the middle of the upper surface of the sludge dewatering tank 201. The transmission belt 503 is sleeved on the outer side walls of the second pulley 504 and the transmission belt 503. One end of the third auger column 506 penetrates through the inner side wall of the sludge dewatering tank 201 and is fixedly connected to the inner side wall of the second pulley 504. The second auger column 505 is arranged on the inner side wall of the water purification filter cylinder 304. One end of the second auger column 505 penetrates through the inner side wall of the water treatment tank 301 and is fixedly connected to the inner side wall of the first pulley 502. A number of water passing micropores 403 are all opened on the outer side walls of the first auger column 402 and the second auger column 505;

[0061] The driving mechanism 501 is composed of a mounting frame 511, a second motor 512 and a gear 513;

[0062] Among them, the mounting bracket 511 is fixedly connected to one side of the upper surface of the water treatment tank 301. The second motor 512 is installed in the middle of the upper surface of the mounting bracket 511. The gear 513 is rotatably connected between the upper surface of the water treatment tank 301 and the mounting bracket 511. The output shaft of the second motor 512 is fixedly connected to one end of the gear 513. The outer side wall of the gear 513 is meshed and connected to the bottom of the outer side wall of the first pulley 502.

[0063] The output shaft of the second motor 512 drives the gear 513 to rotate. The rotating gear 513 drives the first pulley 502 to rotate by means of the tooth pattern. The rotating first pulley 502 drives the second auger column 505 and the transmission belt 503 to move. The moving transmission belt 503 drives the second pulley 504 to rotate. The rotating second pulley 504 drives the water stirring frame 507 to rotate by means of the third auger column 506.

[0064] In one embodiment, the water guiding mechanism 7 includes a water pump 701, a water guiding connecting pipe 702 and a water guiding conveying pipe 703.

[0065] Among them, the water pump 701 is installed in the middle of the inner side wall of the water treatment skid 102. One end of the water guiding connecting pipe 702 is flange-connected to one end of the outer connecting pipe 204. The other end of the water guiding connecting pipe 702 communicates with the water inlet of the water pump 701. One end of the water guiding conveying pipe 703 communicates with the water outlet of the water pump 701. The other end of the water guiding conveying pipe 703 penetrates through the inner side walls of the water treatment tank 301, the support grid 302, the cylindrical water passing airbag 307 and the modified fiber ball 303 and extends into the inside of the water purification filter cartridge 304.

[0066] The water pump 701 uses the water guiding connecting pipe 702 to cooperate with the outer connecting pipe 204 to generate suction in the water inlet pipe 203, so as to use the water inlet pipe 203 to pump out the wastewater after separating the sediment, and then inject the pumped wastewater into the inside of the water purification filter cartridge 304 through the water guiding conveying pipe 703.

[0067] In one embodiment, the pressure bearing mechanism 8 includes a support frame 801, a sealing baffle 802, a guide shaft 803 and a second spring 804.

[0068] Among them, the support frame 801 is fixedly connected to the middle of the inner side wall of the impurity discharge pipe 305. The outer side wall of the sealing baffle 802 is slidably connected to the bottom of the inner side wall of the water treatment tank 301. One end of the guide shaft 803 is fixedly connected to the bottom of the sealing baffle 802. The outer side wall of the guide shaft 803 is slidably connected to the inner side wall of the support frame 801. The second spring 804 is sleeved on the outer side of the guide shaft 803. The second spring 804 is fixedly connected between the sealing baffle 802 and the support frame 801.

[0069] By using the stacked solid particulate matter to extrude the surface of the sealing baffle 802, when the pressure received by the sealing baffle 802 reaches the bearing limit of the second spring 804, the sealing baffle 802 drives the guide shaft 803 and the second spring 804 to move under the action of the pressure. The moving guide shaft 803 slides in the support frame 801 to guide the sealing baffle 802, and the moving second spring 804 is compressed.

[0070] In one embodiment, a pressing mechanism 6 is installed on the top of the water treatment tank 301. The pressing mechanism 6 includes an electric push rod 601, an air storage cylinder 602, a piston plate 603, and an air guide pipe 604.

[0071] Among them, the electric push rod 601 is installed on one side of the upper surface of the water treatment tank 301. The air storage cylinder 602 is fixedly connected to one side of the top of the inner wall of the water treatment tank 301. The outer wall of the piston plate 603 is slidably connected to the inner wall of the air storage cylinder 602. The piston rod of the electric push rod 601 is fixedly connected to the top of the piston plate 603. One end of the air guide pipe 604 communicates with the bottom of the air storage cylinder 602, and the other end of the air guide pipe 604 penetrates through the support grid 302 and communicates with the inside of the cylindrical water-permeable airbag 307. The top of the outer wall of the water treatment tank 301 is communicated with a backwash pipe 91.

[0072] The piston rod of the electric push rod 601 is pushed to drive the piston plate 603 to reciprocate. The moving piston plate 603 cooperates with the air guide pipe 604 to squeeze the air in the air storage cylinder 602 into the inside of the cylindrical water-permeable airbag 307, so that the cylindrical water-permeable airbag 307 expands to squeeze the modified fiber balls 303 to extrude the impurities intercepted by them. The provided backwash pipe 91 is used to inject backwash clear water into the water treatment tank 301.

[0073] When the present invention is working: First, the sludge discharge skid frame 103 is integrally installed at the designated position according to actual needs. Then, the sludge dewatering skid frame 101 and the water treatment skid frame 102 are integrally assembled by means of hoisting, so that one ends of the sewage discharge pipe 206 and the impurity discharge pipe 305 are simultaneously aligned with one ends of two branch connecting pipes 408, and one end of the outer connecting pipe 204 is aligned with one end of the water guide connecting pipe 702. After all the alignments are completed, the bottoms of the sludge dewatering skid frame 101 and the water treatment skid frame 102 are fixed on the sludge discharge skid frame 103. Then, the pump skid frame 104 is installed on one side of the sludge discharge skid frame 103, so that one end of the sewage guiding pipe 93 is aligned with one end of the sewage inlet pipe 205. Then, bolts are used to connect the sewage guiding pipe 93 and the sewage inlet pipe 205, the outer connecting pipe 204 and the water guide connecting pipe 702, the sewage discharge pipe 206 and the branch connecting pipe 408, and the impurity discharge pipe 305 and the branch connecting pipe 408 respectively. The transmission belt 503 is sleeved between the first belt pulley 502 and the second belt pulley 504. Then, the sewage suction pipe is connected to the water inlet of the sewage suction pump 92 according to actual needs to complete the overall assembly operation of the equipment.

[0074] When it is necessary to treat the tunnel construction wastewater, the wastewater is pumped out by the sewage pump 92 in cooperation with the sewage suction pipe, and is injected into the interior of the sludge removal tank 201 through the sewage guiding pipe 93 in cooperation with the sewage inlet pipe 205. Then, the spiral guide plate 202 is used to guide the incoming wastewater, so that the wastewater forms a vortex inside the sludge removal tank 201, in order to utilize the vortex centrifugal force to make the sediment carried in the wastewater move outward and contact the inner wall of the sludge removal tank 201, so as to reduce the flow rate of the sediment and make it gradually deposit at the bottom of the sludge removal tank 201, for the primary separation treatment of the construction wastewater.

[0075] Then, the output shaft of the second motor 512 drives the gear 513 to rotate. The rotating gear 513 drives the first pulley 502 to rotate by means of the tooth pattern. The rotating first pulley 502 drives the second auger column 505 and the transmission belt 503 to move. The moving transmission belt 503 drives the second pulley 504 to rotate. The rotating second pulley 504 drives the water stirring frame 507 to rotate by means of the third auger column 506. The rotating water stirring frame 507 drives the wastewater in the sludge removal tank 201 to move, in order to increase the rotation speed of the wastewater in the sludge removal tank 201. At the same time, the rotating third auger column 506 pushes the sediment and part of the wastewater deposited at the bottom of the sludge removal tank 201 into the interior of the dehydration cylinder 409, preventing the sediment from accumulating at the bottom of the sludge removal tank 201 and affecting the separation effect.

[0076] The water pump 701 generates suction in the water guiding pipe 203 through the water guiding connecting pipe 702 in cooperation with the external connecting pipe 204, so as to utilize the water guiding pipe 203 to pump out the wastewater after separating the sediment at the vortex center. Then, the pumped wastewater is injected into the interior of the water purification filter cartridge 304 through the water guiding delivery pipe 703, so as to intercept the residual solid particles in the wastewater through the water purification filter cartridge 304. Then, the modified fiber ball 303 intercepts the residual suspended substances, colloids, organic substances and part of heavy metal ions in the wastewater by virtue of its large specific surface area and pore structure, for the secondary purification treatment of the construction wastewater, so that the treated water can be put into the tunnel construction operation again, reducing the pollution to the surrounding environment. Then, the drain valve 306 is opened, and the treated water in the water treatment tank 301 can be drained out for use.

[0077] The rotating second auger column 505 pushes the solid particulate matter intercepted in the water purification filter cartridge 304, causing it to gather towards the bottom of the water treatment tank 301. When a large amount of solid particulate matter accumulates at the bottom inner wall of the water treatment tank 301, the rotating second auger column 505 uses the accumulated solid particulate matter to squeeze the surface of the sealing baffle 802. When the pressure received by the sealing baffle 802 reaches the bearing limit of the second spring 804, the sealing baffle 802 drives the guide shaft 803 and the second spring 804 to move under the action of the pressure. The moving guide shaft 803 slides within the support frame 801 to guide the sealing baffle 802, and the moving second spring 804 is compressed. Thus, the bottom of the water treatment tank 301 can be opened, enabling the solid particulate matter accumulated inside to be discharged into the interior of the dehydration cylinder 409 through the waste discharge pipe 305 and the branch connection pipe 408. When the pressure borne by the sealing baffle 802 decreases due to the discharge of the accumulated solid particulate matter, the compressed second spring 804 drives the sealing baffle 802 to reset, so as to block the bottom of the water treatment tank 301 and prevent the water in the water purification filter cartridge 304 from directly flowing into the interior of the dehydration cylinder 409.

[0078] The output shaft of the first motor 401 drives the first auger column 402 to rotate. The rotating first auger column 402 drives the sediment and other solid particulate matter collected in the dehydration cylinder 409 to move, so as to concentrate the sediment and other solid particulate matter at the plug column 405. Then, the rotating first auger column 402 cooperates with the sediment and other solid particulate matter to squeeze one end of the plug column 405. When the pressure borne by the plug column 405 reaches the bearing limit of the first spring 406, the plug column 405 moves along the sliding frame 404 under the action of the pressure and drives the first spring 406 to be compressed. When the plug column 405 moves to one side of the sludge discharge pipe 407, the sediment and other solid particulate matter dehydrated by squeezing between the plug column 405 and the first auger column 402 is extruded into the sludge discharge pipe 407 by using the pressure, so as to be discharged through the sludge discharge pipe 407; the provided water passing micropores 403 are used to ensure that during the extrusion process of the sediment or other solid particulate matter, the water extruded can directly flow through the first auger column 402 or the second auger column 505.

[0079] When the water purification filter cartridge 304 and the modified fiber ball 303 need to be cleaned after a long period of use, the pump skid 104 is assembled with the water treatment skid 102 as a whole, one end of the sewage guiding pipe 93 is communicated with one end of the backwashing pipe 91, and the drain valve 306 is closed, so as to directly inject the drawn clear water into the interior of the water treatment tank 301 by using the sewage pumping pump 92 in cooperation with the sewage guiding pipe 93 and the backwashing pipe 91, and then use the injected water to backwash the modified fiber ball 303 and the water purification filter cartridge 304 in the reverse direction. Then, the bottom of the water treatment tank 301 is opened under the action of water pressure through the pressure-bearing mechanism 8, so as to discharge the water for reverse washing in the water treatment tank 301 through the impurity discharge pipe 305. During the washing process, the piston rod of the electric push rod 601 can be used to push the piston plate 603 to reciprocate. The moving piston plate 603 cooperates with the air guiding pipe 604 to extrude the air in the air storage cylinder 602 into the interior of the cylindrical water-permeable air bag 307, so that the cylindrical water-permeable air bag 307 expands to extrude the modified fiber ball 303, so as to extrude the impurities intercepted by it. When the piston plate 603 is reset, the air in the cylindrical water-permeable air bag 307 can be extracted by using the air guiding pipe 604 to reset the cylindrical water-permeable air bag 307, so as to repeatedly extrude the modified fiber ball 303 and cooperate with the water for reverse washing to clean the water purification filter cartridge 304.

[0080] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of various changes or substitutions, and these should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A tunnel construction wastewater separation and treatment device, comprising a skid assembly (1) and a primary separation mechanism (2), characterized in that: The skid assembly (1) comprises a desludging skid (101), a water treatment skid (102), a mud discharge skid (103) and a pump skid (104); The desludging skid (101) and the water treatment skid (102) are both mounted on the upper surface of the desludging skid (103); the pump skid (104) is arranged on one side of the desludging skid (101); the primary separation mechanism (2) is mounted on the top of the inner wall of the desludging skid (101); a secondary treatment mechanism (3) is mounted on the top of the inner wall of the water treatment skid (102); a desludging mechanism (4) is mounted on the top of the inner wall of the desludging skid (103); a synchronous pushing mechanism (5) and a water guiding mechanism (7) are mounted between the primary separation mechanism (2) and the secondary treatment mechanism (3); and a pressure bearing mechanism (8) is mounted on the bottom of the inner wall of the secondary treatment mechanism (3); The primary separation mechanism (2) comprises a desludging tank (201), a spiral guide plate (202) and a water diversion pipe (203), and the synchronous pushing mechanism (5) comprises a third auger column (506) and a water stirring frame (507); The desludging tank (201) is fixedly connected to the top of the inner wall of the desludging skid frame (101), the spiral guide plate (202) is fixedly connected to the inner wall of the desludging tank (201), the water guide pipe (203) is fixedly connected to the top of the inner wall of the desludging tank (201), the third auger column (506) is arranged in the middle of the inner wall of the desludging tank (201), and the water stirring frame (507) is fixedly connected to the middle of the outer wall of the third auger column (506); The secondary treatment mechanism (3) comprises a water treatment tank (301), a support grid (302), modified fiber balls (303), a water purification filter cartridge (304), a drainage pipe (305), a drainage valve (306) and a cylindrical water-passing air bag (307); The water treatment tank (301) is fixedly connected to the top of the inner wall of the water treatment skid (102), the support grid (302) is fixedly connected to the middle of the inner wall of the water treatment tank (301), the outer wall of the cylindrical water-passing air bag (307) is fixedly connected to the inner wall of the support grid (302), the water purification filter cartridge (304) is arranged inside the support grid (302) and installed in the middle of the inner wall of the water treatment tank (301), the modified fiber balls (303) are filled between the water purification filter cartridge (304) and the cylindrical water-passing air bag (307), one end of the drainage pipe (305) is connected to the bottom of the water treatment tank (301), and one end of the drainage valve (306) is connected to the bottom of the outer wall of the water treatment tank (301).

2. The tunnel construction wastewater separation and treatment equipment according to claim 1 is characterized by: The primary separation mechanism (2) further comprises an external pipe (204), a sewage inlet pipe (205) and a sewage outlet pipe (206); One end of the external pipe (204) is connected to the top of the outer wall of the water diversion pipe (203), the other end of the external pipe (204) passes through the inner wall of the desludging tank (201), one end of the sewage inlet pipe (205) is connected to the top of the outer wall of the desludging tank (201), and one end of the sewage discharge pipe (206) is connected to the bottom of the desludging tank (201).

3. The tunnel construction wastewater separation and treatment equipment according to claim 2 is characterized by: The mud discharge mechanism (4) comprises a first motor (401), a first auger column (402), a plurality of water-passing microholes (403), a slide frame (404), a plug column (405), a first spring (406), a mud discharge pipe (407), two branch pipes (408) and a dewatering cylinder (409); The dewatering cylinder (409) is fixedly connected to the top of the inner wall of the mud discharge skid frame (103); the first motor (401) is installed at one end of the dewatering cylinder (409); the first auger column (402) is arranged inside the dewatering cylinder (409); one end of the first auger column (402) is fixedly connected to the output shaft of the first motor (401); the slide (404) is fixedly connected to the other end of the dewatering cylinder (409); the outer wall of the plug column (405) is slidably connected to the inner wall of the dewatering cylinder (409) near one end of the slide (404); and the plug column The inner wall of the (405) is slidably connected to the outer wall of the slide (404), the first spring (406) is fixedly connected between the slide (404) and the plug (405), the mud discharge pipe (407) is connected to the bottom of the outer wall of the dewatering cylinder (409) close to one end of the slide (404), the two branch pipes (408) are symmetrically connected to the top of the outer wall of the dewatering cylinder (409), one end of one branch pipe (408) is flange-connected to the sewage discharge pipe (206), and one end of the other branch pipe (408) is flange-connected to the impurity discharge pipe (305).

4. The tunnel construction wastewater separation and treatment equipment according to claim 3 is characterized by: The synchronous pushing mechanism (5) further comprises a driving mechanism (501), a first belt pulley (502), a transmission belt (503), a second belt pulley (504) and a second auger column (505); The driving mechanism (501) is installed on one side of the upper surface of the water treatment tank (301), the first pulley (502) is installed in the middle of the upper surface of the water treatment tank (301), the second pulley (504) is installed in the middle of the upper surface of the desludging tank (201), the transmission belt (503) is sleeved on the outer wall of the second pulley (504) and the transmission belt (503), and one end of the third auger column (506) passes through the desludging tank (201). The inner wall of the water treatment tank (201) is fixedly connected to the inner wall of the second pulley (504), the second auger column (505) is arranged inside the water purification filter cartridge (304), one end of the second auger column (505) passes through the inner wall of the water treatment tank (301) and is fixedly connected to the inner wall of the first pulley (502), and a plurality of water-passing micropores (403) are provided on the outer walls of the first auger column (402) and the second auger column (505).

5. The tunnel construction wastewater separation and treatment equipment according to claim 4 is characterized by: The driving mechanism (501) is composed of a mounting frame (511), a second motor (512) and a gear (513); The mounting frame (511) is fixedly connected to one side of the upper surface of the water treatment tank (301); the second motor (512) is installed in the middle of the upper surface of the mounting frame (511); the gear (513) is rotatably connected between the upper surface of the water treatment tank (301) and the mounting frame (511); the output shaft of the second motor (512) is fixedly connected to one end of the gear (513); and the outer wall of the gear (513) is meshedly connected to the bottom of the outer wall of the first pulley (502).

6. The tunnel construction wastewater separation and treatment equipment according to claim 2 is characterized by: The water guiding mechanism (7) comprises a water pump (701), a water guiding connecting pipe (702) and a water guiding delivery pipe (703); The water pump (701) is installed at the middle of the inner wall of the water treatment skid (102), one end of the water guide connecting pipe (702) is flange-connected to one end of the external pipe (204), the other end of the water guide connecting pipe (702) is connected to the water inlet of the water pump (701), one end of the water guide delivery pipe (703) is connected to the drain outlet of the water pump (701), and the other end of the water guide delivery pipe (703) passes through the water treatment tank (301), the support grid (302), the cylindrical water-passing air bag (307), and the inner wall of the modified fiber ball (303) and extends to the interior of the water purification filter cartridge (304).

7. The tunnel construction wastewater separation and treatment equipment according to claim 1 is characterized by: The pressure-bearing mechanism (8) comprises a support frame (801), a sealing baffle (802), a guide shaft (803) and a second spring (804); The support frame (801) is fixedly connected to the middle of the inner wall of the impurity discharge pipe (305), the outer wall of the sealing baffle (802) is slidably connected to the bottom of the inner wall of the water treatment tank (301), one end of the guide shaft (803) is fixedly connected to the bottom of the sealing baffle (802), the outer wall of the guide shaft (803) is slidably connected to the inner wall of the support frame (801), the second spring (804) is sleeved on the outside of the guide shaft (803), and the second spring (804) is fixedly connected between the sealing baffle (802) and the support frame (801).

8. The tunnel construction wastewater separation and treatment equipment according to claim 2 is characterized by: A sewage pump (92) is installed at the bottom of the inner wall of the pump skid frame (104); the drainage port of the sewage pump (92) is connected to a sewage guide pipe (93); one end of the sewage guide pipe (93) passes through the inner wall of the pump skid frame (104) and is flange-connected to one end of the sewage inlet pipe (205).

9. The tunnel construction wastewater separation and treatment equipment according to claim 1, characterized in that: A compression mechanism (6) is installed on the top of the water treatment tank (301), and the compression mechanism (6) comprises an electric push rod (601), an air storage cylinder (602), a piston plate (603) and an air guide pipe (604); The electric push rod (601) is installed on one side of the upper surface of the water treatment tank (301), the air cylinder (602) is fixedly connected to one side of the top of the inner wall of the water treatment tank (301), the outer wall of the piston plate (603) is slidably connected to the inner wall of the air cylinder (602), the piston rod of the electric push rod (601) is fixedly connected to the top of the piston plate (603), one end of the air guide tube (604) is connected to the bottom of the air cylinder (602), the other end of the air guide tube (604) passes through the supporting grid (302) and is connected to the inside of the cylindrical water-passing air bag (307), and the top of the outer wall of the water treatment tank (301) is connected to a recoil pipe (91).

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