CN111877522A - Construction method for urban sewage pump station - Google Patents
Construction method for urban sewage pump station Download PDFInfo
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- CN111877522A CN111877522A CN202010555260.0A CN202010555260A CN111877522A CN 111877522 A CN111877522 A CN 111877522A CN 202010555260 A CN202010555260 A CN 202010555260A CN 111877522 A CN111877522 A CN 111877522A
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- sewage pump
- lifting
- submersible sewage
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- 239000010865 sewage Substances 0.000 title claims abstract description 134
- 238000010276 construction Methods 0.000 title claims abstract description 26
- 239000010813 municipal solid waste Substances 0.000 claims abstract description 53
- 230000007246 mechanism Effects 0.000 claims abstract description 38
- 230000000903 blocking effect Effects 0.000 claims abstract description 16
- 238000001914 filtration Methods 0.000 claims abstract description 11
- 238000000429 assembly Methods 0.000 claims abstract description 9
- 230000000712 assembly Effects 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 33
- 238000009434 installation Methods 0.000 claims description 19
- 238000000926 separation method Methods 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 125000003003 spiro group Chemical group 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims description 2
- 230000004888 barrier function Effects 0.000 abstract description 4
- 238000004140 cleaning Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 239000010801 sewage sludge Substances 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009189 diving Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/22—Adaptations of pumping plants for lifting sewage
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/50—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/96—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor in which the filtering elements are moved between filtering operations; Particular measures for removing or replacing the filtering elements; Transport systems for filters
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B15/00—Cleaning or keeping clear the surface of open water; Apparatus therefor
- E02B15/04—Devices for cleaning or keeping clear the surface of open water from oil or like floating materials by separating or removing these materials
- E02B15/10—Devices for removing the material from the surface
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F9/00—Arrangements or fixed installations methods or devices for cleaning or clearing sewer pipes, e.g. by flushing
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a construction method of an urban sewage pump station, which comprises the following steps: step 1) prefabricating a trash holding assembly, wherein the trash holding assembly comprises a trash holding net, a pair of lifting lugs, a pair of balancing weights and a pair of first lifting mechanisms; step 2), prefabricating a plurality of filter assemblies, wherein each filter assembly comprises a filter screen and a second lifting mechanism; step 3) prefabricating a plurality of submersible sewage assemblies, wherein each submersible sewage assembly comprises a base, a submersible sewage pump, a pair of conveying pipes, a pair of stand columns, a pair of guide blocks and a pair of guide shafts; step 4) erecting a barrier plate in the sewage pool, wherein a plurality of flow guide pipes penetrate through the barrier plate, a platform template is erected on the downstream side of the barrier plate, and concrete is poured; and 5) installing the trash blocking assembly, the plurality of filtering assemblies and the submerged trash assembly in a sewage pool. The invention can construct sewage pump stations with different scales on site according to the operation environment, the discharge capacity requirement and the like.
Description
Technical Field
The invention relates to the field of sewage treatment. More particularly, the invention relates to a construction method of an urban sewage pump station.
Background
Municipal sewage treatment generally introduces sewage into a sewage tank through a sewer, collects the sewage into a submersible sewage pump, lifts the sewage through the submersible sewage pump, and conveys the sewage to a sewage treatment plant through a ground drainage pipeline for treatment. Because sewage is directly conveyed to a sewage treatment plant through a submersible sewage pump, the sewage possibly has the possibility of blocking the submersible sewage pump and a conveying pipeline, the submersible sewage pump is lifted to the ground through an iron chain during the current maintenance, the problem of uneven force application exists, the submersible sewage pump is inverted and collided in the lifting process, the structure is damaged, the cost is further increased, the construction period of the equipment is short for a long time, and the trend and the requirement of energy conservation and environmental protection are not met.
Disclosure of Invention
An object of the present invention is to solve at least the above problems and to provide at least the advantages described later.
The invention also aims to provide a construction method of the urban sewage pump station, which is characterized in that the sewage blocking component and the filtering component are arranged to respectively block large-volume sewage and small-volume sewage, so that solid garbage in sewage is reduced, the water environment is maintained in a regular salvaging and cleaning mode, the sewage submersible pump is periodically overhauled by arranging the sewage submersible component, the construction efficiency is improved, and the sewage pump stations with different scales can be constructed on site according to the operation environment, the discharge capacity requirement and the like.
To achieve these objects and other advantages in accordance with the purpose of the invention, there is provided a municipal sewage pump station construction method including:
step 1) prefabricating a trash rack assembly, wherein the trash rack assembly comprises a trash rack, a pair of lifting lugs, a pair of balancing weights and a pair of first lifting mechanisms, the trash rack is of a basket structure, the top of the trash rack is open, first filtering holes are formed in the side wall and the bottom of the trash rack, the pair of lifting lugs are fixedly arranged on the front side and the rear side of the trash rack, and the pair of first lifting mechanisms are connected with the pair of lifting lugs through the pair of balancing weights hung on a rope so as to lift or lower the trash rack;
step 2) prefabricating a plurality of filter assemblies, wherein each filter assembly comprises a filter screen and a second lifting mechanism, the filter screen is of a cylindrical structure and comprises an installation end face and a closed end face, second filter holes are formed in the outer wall and the closed end of the filter screen, the size of each second filter hole is smaller than that of each first filter hole, a plurality of filter sheets are arranged on the installation end face in the radial direction, one ends, connected with the circumference, of the filter sheets are fixed ends, the other ends, pointing to the circle center, of the filter sheets are free ends, the filter sheets are elastic members, the plurality of filter sheets are not overlapped with each other and form fine and long gaps, the width of each gap is smaller than that of each second filter hole, and the second lifting mechanisms are connected with the outer wall of the filter screen in a hanging mode through ropes so that the filter screens;
step 3) prefabricating a plurality of submersible sewage assemblies, wherein each submersible sewage assembly comprises a base, a submersible sewage pump, a pair of conveying pipes, a pair of stand columns, a pair of guide blocks and a pair of guide shafts, the submersible sewage pump and the pair of stand columns are detachably mounted on the base, a plurality of pairs of through holes are reserved in the base, the pair of stand columns are vertically mounted in the front and the rear of the submersible sewage pump, the stand columns face the side faces of the submersible sewage pump to form a long-strip-shaped opening, the pair of guide shafts are vertically arranged inside the pair of stand columns respectively, the top ends and the bottom ends of the guide shafts are mounted on the stand columns respectively through bearing seats, the guide shafts are provided with external threads, the front side and the rear side of the submersible sewage pump are connected with the pair of guide blocks respectively, the guide blocks extend into the opening to form a lifting nut, the outer diameter of the guide blocks is larger than the width of the opening and are sleeved on the, the front side and the rear side of the submersible sewage pump are respectively connected with a pair of conveying pipes, and the horizontal parts of the conveying pipes are lower than the guide blocks and extend into the openings so that the vertical parts of the conveying pipes are positioned behind the guide shafts;
step 4) erecting a vertical blocking plate in the sewage pool perpendicular to the sewage flowing direction, penetrating a plurality of flow guide pipes on the blocking plate, erecting a platform template on the downstream side of the blocking plate, forming a closed space by the platform template and the inner wall of the sewage pool, embedding a plurality of pairs of bolts in the closed space along the vertical direction, pouring concrete in the closed space, forming a platform and exposing the ground inserting bolts;
step 5) will block dirty subassembly install in separation board upper reaches side, a pair of first hoist mechanism install at the effluent water sump top, block dirty net immerse the effluent water sump bottom to be less than the effluent water sump entry, install a plurality of filter components in separation board downstream side makes the installation terminal surface of a filter screen insert a honeycomb duct, the second hoist mechanism install at the effluent water sump top, will dive dirty subassembly install in the filter component downstream side, the base passes through locking nut spiro union on inserting ground bolt, the motor is installed at the effluent water sump top, the drainage pipe that is located ground is passed through the connecting pipe UNICOM at the top of the vertical portion of conveyer pipe.
Preferably, the method further comprises the following steps:
step 6), when large-volume dirt is salvaged, the trash rack is lifted through a pair of first lifting mechanisms, and the trash rack is placed downwards and reset after being salvaged; when small-volume dirt is cleaned, the filter screen is not inserted into the flow guide pipe, the filter screen is lifted through the second lifting mechanism, and the filter screen is placed downwards and reset after being cleaned; when the submersible sewage pump is overhauled, the submersible sewage pump is removed from being connected with the base, the guide shaft is driven by the motor to rotate, the pair of guide blocks ascend to lift the submersible sewage pump, and the submersible sewage pump is placed after being overhauled and reset.
Preferably, the counterweight block comprises an upper counterweight block and a lower counterweight block, the upper counterweight block and the lower counterweight block are respectively positioned above and below the lifting lug, and the length and width dimensions of the upper counterweight block and the lower counterweight block are larger than those of the lifting lug.
Preferably, the first lifting mechanism and the second lifting mechanism each comprise a winch or a combination of a winch and a fixed pulley.
Preferably, the radial lengths of the plurality of filter discs are different, and the radial length of the longest filter disc is still slightly smaller than the radius of the mounting end face.
Preferably, the output shaft of one motor drives all the guide shafts to rotate through a straight bevel gear.
Preferably, the output shaft of the motor, the straight bevel gear, the top end of the guide shaft and the connecting pipe are packaged in a shell.
The invention at least comprises the following beneficial effects:
firstly, the sewage blocking assembly and the filtering assembly are arranged to respectively block large-volume dirt and small-volume dirt, so that solid garbage in sewage is reduced, a water environment is maintained in a mode of regular salvage and cleaning, the sewage submersible pump is periodically overhauled by arranging the sewage submersible assembly, the construction efficiency is improved, and sewage pump stations of different scales can be constructed on site according to the operation environment, the discharge capacity requirement and the like;
secondly, sewage sludge and dirt are conveyed to the sewage pool through an inlet of the sewage pool, the dirt blocking net is lower than the inlet so that the dirt directly enters the dirt blocking net, the dirt with the size smaller than that of the first filter hole enters the flow guide pipe along with the sewage sludge, and as the mounting end face of the filter screen is provided with a plurality of elastic component (preferably metal) filter sheets, the filter sheets are bent and tightly attached to the outer wall of the flow guide pipe in a surrounding mode during splicing, the abutted external force is larger than the water flow impact force, the dirt with the size larger than that of the second filter hole is blocked, water enters a water inlet of the submersible sewage pump, and meanwhile, the water is;
thirdly, the trash rack is of a basket structure, the trash rack is provided with first filtering holes and can effectively intercept large-size dirt, the peripheral size of the trash rack is preferably slightly smaller than the upstream side space of the internal baffle plate of the sewage pool, the largest covering area of the dirt can be conveniently accommodated, the trash rack can be quickly reset to the bottom of the pool due to gravity when being placed downwards due to the arrangement of the balancing weight so as to receive sewage and sludge entering the sewage pool, the size can be conveniently adjusted according to the specification of the sewage pool in a prefabricated mode, and the trash rack can be quickly installed on site;
fourthly, the filter screen is of a cylindrical structure, the second filter holes are formed in the filter screen, small-size dirt can be effectively intercepted, the number of the filter screens is multiple, rapid water passing and large-amount dirt containing are facilitated, the filter sheets are arranged from the periphery to the circle center and are bent towards the inside of the filter screen during insertion, the multiple filter sheets are not overlapped with each other, bending resistance is reduced, fine and long gaps are formed, dirt is prevented from being penetrated out, blocking sections are further formed, the size can be adjusted better according to the specifications of a sewage pool and a flow guide pipe in a prefabricated mode, and the filter screen can be installed rapidly on site;
fifthly, the submersible sewage pump is the existing equipment (purchased), can be detachably mounted on a base, is convenient to connect and disconnect, has a complex structure and internal installation, can be detachably mounted on the base, is convenient for components to be prefabricated and integrally mounted respectively, is convenient for the base to be sleeved with a ground inserting bolt of cast-in-place concrete through a through hole and is convenient for fastening and mounting the base, is convenient for reducing the turbulence degree and the water inlet resistance of the submersible sewage pump, is internally provided with a rotatable guide shaft, is convenient for the threaded matching of the guide shaft and the guide block, simultaneously limits the horizontal displacement of the guide block and ensures that the submersible sewage pump can be lifted stably, is used for conveying sewage through a conveying pipe, has a horizontal part lower than the guide block and a vertical part positioned behind the guide shaft, avoids blocking the matching of the guide block and the guide shaft, ensures that the sewage is conveyed stably, and when the submersible sewage pump needs to be overhaul, the connection between the water outlet of the submersible sewage pump and the conveying pipe is removed, so that the operation is simple, rapid and mature;
sixthly, during on-site construction, assembling the prefabricated components with a sewage tank and a drainage pipeline on the ground, properly adding stiffening rods, pipe hoops and a waterproof structure for on-site installation and maintenance according to construction requirements, simultaneously performing cast-in-place to form a platform and preposing a sewage interception surface, and reducing the problem that a submersible sewage pump is damaged by turbulence caused by the fact that the side wall of the sewage tank is positioned at the downstream of the submersible sewage pump in the prior art;
seventh, when salvaging and cleaning are needed, the first lifting mechanism lifts the trash rack, the second lifting mechanism lifts the filter screen for manual cleaning, time, labor and cost consumption when workers enter the sewage pool are avoided, the submersible sewage pump is driven by a motor to ascend horizontally, uniformly and linearly when being overhauled, loss caused by inversion and collision can be reduced, and construction safety is improved; the direction of the balancing weight is set to enable the lifting lugs to be clamped and quickly lowered when the ropes are tensioned; the rope is ensured to be vertically suspended and lifted through the winch or the combination of the winch and the fixed pulley, so that the lifted component is uniformly stressed and vertically lifted; the radial lengths of the plurality of filter sheets are different, so that the outer wall of the flow guide pipe bears the butt joint of different sites, the front and back surfaces of different filter sheets are prevented from being in contact with each other, the extrusion and the dispersion of the stress of the flow guide pipe are avoided, the longest specification of the filter sheets is slightly smaller than the radius of the installation end surface, the flow guide pipe can be ensured to be in contact and butt joint, and the splicing quality is improved; only one motor is needed to be linked with a plurality of guide shafts through a plurality of straight bevel gears, so that the uniformity of steering and rotating speed is ensured, and the consumption of energy consumption is reduced; waterproof dustproof installation is carried out through setting up the casing, better protection part, equipment and construction safety.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
FIG. 1 is a schematic structural diagram of one embodiment of the present invention;
FIG. 2 is a schematic view of the mounting end face of the filter screen of the present invention;
FIG. 3 is an enlarged schematic view of A of FIG. 1 according to the present invention.
Detailed Description
The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the invention by referring to the description text.
It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.
It is to be noted that the experimental methods described in the following embodiments are all conventional methods unless otherwise specified, and the reagents and materials, if not otherwise specified, are commercially available; in the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can, for example, be fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. The terms "lateral," "longitudinal," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the invention and to simplify the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.
As shown in fig. 1-3, the present invention provides a construction method of an urban sewage pumping station, comprising:
step 1) prefabricating a trash rack assembly, wherein the trash rack assembly comprises a trash rack 1, a pair of lifting lugs, a pair of balancing weights and a pair of first lifting mechanisms 2, the trash rack 1 is of a basket type structure, the top of the trash rack 1 is open, first filtering holes are formed in the side wall and the bottom of the trash rack, the pair of lifting lugs are fixedly arranged on the front side and the rear side of the trash rack 1, and the pair of first lifting mechanisms 2 are connected with the pair of lifting lugs through the pair of balancing weights hung on a rope so as to lift or lower the trash rack 1;
step 2) prefabricating a plurality of filter assemblies, wherein each filter assembly comprises a filter screen 3 and a second lifting mechanism 4, each filter screen 3 is of a cylindrical structure, each filter screen 3 comprises an installation end face and a closed end face, the outer wall and the closed end of each filter screen 3 are respectively provided with a second filter hole, the size of each second filter hole is smaller than that of each first filter hole, the installation end face is radially provided with a plurality of filter sheets, one end, connected with the circumference, of each filter sheet is a fixed end, the other end, pointing to the circle center, of each filter sheet is a free end, each filter sheet is an elastic component, the plurality of filter sheets are not overlapped with each other and form a small and long gap, the width of each gap is smaller than that of each second filter hole, and each second lifting mechanism 4 is connected with the outer wall of each filter screen 3 in a hanging mode through a;
step 3) prefabricating a plurality of submersible sewage assemblies, wherein each submersible sewage assembly comprises a base 5, a submersible sewage pump 6, a pair of conveying pipes, a pair of stand columns 7, a pair of guide blocks and a pair of guide shafts, the submersible sewage pump 6 and the pair of stand columns 7 are detachably mounted on the base 5, a plurality of pairs of through holes are reserved on the base 5, the pair of stand columns 7 are vertically mounted in front of and behind the submersible sewage pump 6, the stand columns 7 face the side faces of the submersible sewage pump 6 to form strip-shaped openings, the pair of guide shafts are vertically arranged inside the pair of stand columns 7 respectively, the top ends and the bottom ends of the guide shafts are mounted on the stand columns 7 through bearing seats respectively, the guide shafts are provided with external threads, the front side and the rear side of the submersible sewage pump 6 are connected with the pair of guide blocks respectively, the parts of the guide blocks extending into the openings form lifting nuts, the outer diameters of the, the motor 8 can drive the guide shaft to rotate to enable the guide block to lift or lower the submersible sewage pump 6, the front side and the rear side of the submersible sewage pump 6 are respectively connected with a pair of conveying pipes, and the horizontal parts of the conveying pipes are lower than the guide block and extend into the openings to enable the vertical parts of the conveying pipes to be located behind the guide shaft;
step 4) erecting a vertical baffle plate 9 in the sewage pool perpendicular to the sewage flow direction, penetrating a plurality of flow guide pipes on the baffle plate 9, erecting a platform template on the downstream side of the baffle plate 9, forming a closed space by the platform template and the inner wall of the sewage pool, embedding a plurality of pairs of bolts in the closed space along the vertical direction, pouring concrete in the closed space to form a platform and exposing the ground inserting bolts;
step 5) will block dirty subassembly install in 9 upper reaches sides of separation board, install a pair of first hoist mechanism 2 at the effluent water sump top, block dirty net 1 and sink into the effluent water sump bottom to be less than the effluent water sump entry, install a plurality of filter assembly in 9 downstream sides of separation board make the installation terminal surface of a filter screen 3 insert a honeycomb duct, second hoist mechanism 4 is installed at the effluent water sump top, will the subassembly of diving is installed in the filter assembly downstream side, base 5 is through locking nut spiro union in inserting ground bolt, motor 8 is installed at the effluent water sump top, the top of the vertical portion of conveyer pipe is located the drainage pipe 11 on ground through the connecting pipe UNICOM.
In above-mentioned technical scheme, block dirty subassembly, filtering component through the setting and carry out the interception respectively of bulky filth, little volume filth, reduce the solid-state rubbish in the sewage to maintain the water environment through the mode of regularly salvaging, clearing up, carry out the periodic overhaul of stealthily dirty pump 6 through setting up stealthily dirty subassembly, improve the efficiency of construction, can be according to the sewage pump station of site operation different scales such as operational environment, discharge capacity demand.
The entry of effluent water sump is to effluent water sump transport sewage sludge filth, it makes the filth directly get into trash screen 1 to trash screen 1 be less than the entry, the filth that the size is less than first filtration pore gets into the honeycomb duct along with sewage sludge, because the installation terminal surface of filter screen 3 has a plurality of elastic component (preferably metal) filter discs, the filter disc takes place to buckle and encircles and hugs closely at the honeycomb duct outer wall during grafting, the external force of butt is greater than the rivers impact force, the filth that the size is greater than the second filtration pore is intercepted, the water inlet of stealthily dirty pump 6 is intake, simultaneously through conveyer pipe pump sending to the drainage pipe 11 on ground.
The trash rack 1 is a basket structure, and the trash rack is provided with a first filter hole to effectively intercept large-size dirt, the peripheral size of the trash rack 1 is preferably slightly smaller than the space on the upstream side of the inner barrier plate 9 of the sewage tank, so that the largest coverage area of the trash can be conveniently accommodated, the trash can be quickly reset to the bottom of the tank due to gravity when being conveniently placed through the arrangement of the balancing weight, the sewage and sludge dirt entering the sewage tank can be accepted, the size can be conveniently adjusted according to the specification of the sewage tank better through a prefabricated mode, and the trash rack is quickly installed on site.
The submersible sewage pump 6 is the existing equipment (purchased), is detachably arranged on a base 5, is convenient to connect and disconnect, has a complex structure and internal installation of a stand column 7, is detachably arranged on the base 5, is convenient for components to be prefabricated and integrally installed respectively, the base 5 is sleeved with a ground inserting bolt of cast-in-place concrete through a through hole, is convenient for fastening and installing the base 5, the stand columns 7 are arranged at the front and the rear of the submersible sewage pump 6, is convenient for the submersible sewage pump 6 to reduce turbulence and water inlet resistance, a rotatable guide shaft is arranged in the stand columns 7, is convenient for the guide shaft and the guide block to be in screwed connection, simultaneously limits the horizontal displacement of the guide block, ensures that the submersible sewage pump 6 can be lifted stably, carries out sewage conveying through a conveying pipe, the horizontal part is lower than the guide block, and the vertical part is positioned at the rear of the guide shaft, avoids blocking the connection of the guide block, when the submersible sewage pump 6 needs to be overhauled, the connection between the water outlet of the submersible sewage pump 6 and the conveying pipe is removed, and the operation is simple, rapid and mature.
During on-site construction, the prefabricated components are assembled with the sewage pool and the drainage pipeline 11 on the ground, stiffening rods, pipe hoops and waterproof structures can be properly added according to construction requirements for on-site installation and maintenance, meanwhile, a platform is formed by on-site casting, a sewage intercepting surface is arranged in front, the problem that in the prior art, the submersible sewage pump 6 is damaged by turbulence caused by the fact that the side wall of the sewage pool is located at the downstream of the submersible sewage pump 6 is solved, a sealing plate can be properly installed at the top of the sewage pool, the positions for installing the first lifting mechanism 2 and the second lifting mechanism 4, the lifting fixed-point cleaning positions of the sewage blocking net 1 and the filter net 3, and the positions of the motor 8, the transmission components and the conveying pipeline are reserved, and the sewage pool has planning performance and.
In another technical solution, the method further comprises:
step 6), when large-volume dirt is salvaged, the trash rack 1 is lifted through the pair of first lifting mechanisms 2, and the trash rack is placed downwards and reset after being salvaged; when small-volume dirt is cleaned, the filter screen 3 is not inserted into the flow guide pipe, the filter screen 3 is lifted through the second lifting mechanism 4, and the filter screen is placed downwards and reset after being cleaned; when examining and repairing stealthily dirty pump 6, remove stealthily dirty pump 6 with the connection of base 5, through motor 8 drive the guiding axle rotates, and a pair of guide block rises in order to promote stealthily dirty pump 6 is transferred after examining and repairing and is reset.
In above-mentioned technical scheme, when needs salvage, clearance, promote trash rack 1, second hoist mechanism 4 through first hoist mechanism 2 and promote filter screen 3 and carry out artifical clearance, avoid the workman to get into the effluent water sump consuming time, consume power, consume the cost, when overhauing stealthily dirty pump 6, through the drive of motor 8, stealthily dirty pump 6 level, at the uniform velocity, straight-line lift can reduce because of inversion, the loss that the collision caused, improve the construction security.
In another technical scheme, the balancing weight comprises an upper balancing weight and a lower balancing weight, the upper balancing weight and the lower balancing weight are respectively located above and below the lifting lug, and the length and the width of the upper balancing weight and the width of the lower balancing weight are both larger than the lifting lug. The position setting of balancing weight can both press from both sides tight lug when making the stretch-draw rope, transfers fast.
In another technical solution, the first lifting mechanism 2 and the second lifting mechanism 4 both include a winch or a combination of a winch and a fixed pulley. The rope is ensured to be vertically suspended and lifted through the winch or the combination of the winch and the fixed pulley, and the lifted component can be uniformly stressed and vertically lifted.
In another technical scheme, the radial lengths of the plurality of filter sheets are different, and the radial length of the longest filter sheet is still slightly smaller than the radius of the mounting end face. The radial length of a plurality of cassette is not equal, makes the outer wall of honeycomb duct bear the butt of different sites, avoids the positive and negative contact extrusion dispersion honeycomb duct atress of different cassette, and the longest specification of cassette slightly is less than the radius of installation terminal surface, ensures that the honeycomb duct can be contacted, butt, improves the quality of pegging graft.
In another technical scheme, an output shaft of one motor 8 drives all guide shafts to rotate through a straight bevel gear. Only one motor 8 is needed to be linked with a plurality of guide shafts through a plurality of straight bevel gears, so that the uniformity of steering and rotating speed is ensured, and the consumption of energy consumption is reduced.
In another technical scheme, the output shaft of the motor 8, the straight bevel gear, the top end of the guide shaft and the connecting pipe are packaged in a shell 10. The shell 10 is arranged for waterproof and dustproof installation, so that parts, equipment and construction safety are better protected.
The number of apparatuses and the scale of the process described herein are intended to simplify the description of the present invention. Applications, modifications and variations of the present invention will be apparent to those skilled in the art.
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.
Claims (7)
1. The construction method of the urban sewage pump station is characterized by comprising the following steps:
step 1) prefabricating a trash rack assembly, wherein the trash rack assembly comprises a trash rack, a pair of lifting lugs, a pair of balancing weights and a pair of first lifting mechanisms, the trash rack is of a basket structure, the top of the trash rack is open, first filtering holes are formed in the side wall and the bottom of the trash rack, the pair of lifting lugs are fixedly arranged on the front side and the rear side of the trash rack, and the pair of first lifting mechanisms are connected with the pair of lifting lugs through the pair of balancing weights hung on a rope so as to lift or lower the trash rack;
step 2) prefabricating a plurality of filter assemblies, wherein each filter assembly comprises a filter screen and a second lifting mechanism, the filter screen is of a cylindrical structure and comprises an installation end face and a closed end face, second filter holes are formed in the outer wall and the closed end of the filter screen, the size of each second filter hole is smaller than that of each first filter hole, a plurality of filter sheets are arranged on the installation end face in the radial direction, one ends, connected with the circumference, of the filter sheets are fixed ends, the other ends, pointing to the circle center, of the filter sheets are free ends, the filter sheets are elastic members, the plurality of filter sheets are not overlapped with each other and form fine and long gaps, the width of each gap is smaller than that of each second filter hole, and the second lifting mechanisms are connected with the outer wall of the filter screen in a hanging mode through ropes so that the filter screens;
step 3) prefabricating a plurality of submersible sewage assemblies, wherein each submersible sewage assembly comprises a base, a submersible sewage pump, a pair of conveying pipes, a pair of stand columns, a pair of guide blocks and a pair of guide shafts, the submersible sewage pump and the pair of stand columns are detachably mounted on the base, a plurality of pairs of through holes are reserved in the base, the pair of stand columns are vertically mounted in the front and the rear of the submersible sewage pump, the stand columns face the side faces of the submersible sewage pump to form a long-strip-shaped opening, the pair of guide shafts are vertically arranged inside the pair of stand columns respectively, the top ends and the bottom ends of the guide shafts are mounted on the stand columns respectively through bearing seats, the guide shafts are provided with external threads, the front side and the rear side of the submersible sewage pump are connected with the pair of guide blocks respectively, the guide blocks extend into the opening to form a lifting nut, the outer diameter of the guide blocks is larger than the width of the opening and are sleeved on the, the front side and the rear side of the submersible sewage pump are respectively connected with a pair of conveying pipes, and the horizontal parts of the conveying pipes are lower than the guide blocks and extend into the openings so that the vertical parts of the conveying pipes are positioned behind the guide shafts;
step 4) erecting a vertical blocking plate in the sewage pool perpendicular to the sewage flowing direction, penetrating a plurality of flow guide pipes on the blocking plate, erecting a platform template on the downstream side of the blocking plate, forming a closed space by the platform template and the inner wall of the sewage pool, embedding a plurality of pairs of bolts in the closed space along the vertical direction, pouring concrete in the closed space, forming a platform and exposing the ground inserting bolts;
step 5) will block dirty subassembly install in separation board upper reaches side, a pair of first hoist mechanism install at the effluent water sump top, block dirty net immerse the effluent water sump bottom to be less than the effluent water sump entry, install a plurality of filter components in separation board downstream side makes the installation terminal surface of a filter screen insert a honeycomb duct, the second hoist mechanism install at the effluent water sump top, will dive dirty subassembly install in the filter component downstream side, the base passes through locking nut spiro union on inserting ground bolt, the motor is installed at the effluent water sump top, the drainage pipe that is located ground is passed through the connecting pipe UNICOM at the top of the vertical portion of conveyer pipe.
2. The urban sewage pumping station construction method according to claim 1, further comprising:
step 6), when large-volume dirt is salvaged, the trash rack is lifted through a pair of first lifting mechanisms, and the trash rack is placed downwards and reset after being salvaged; when small-volume dirt is cleaned, the filter screen is not inserted into the flow guide pipe, the filter screen is lifted through the second lifting mechanism, and the filter screen is placed downwards and reset after being cleaned; when the submersible sewage pump is overhauled, the submersible sewage pump is removed from being connected with the base, the guide shaft is driven by the motor to rotate, the pair of guide blocks ascend to lift the submersible sewage pump, and the submersible sewage pump is placed after being overhauled and reset.
3. The construction method of the municipal sewage pump station according to claim 1, wherein the counterweight comprises an upper counterweight and a lower counterweight, the upper counterweight and the lower counterweight are respectively located above and below the lifting lug, and the length and width of the upper counterweight and the lower counterweight are larger than the lifting lug.
4. The municipal sewage pump station construction method according to claim 1, wherein each of the first lifting mechanism and the second lifting mechanism comprises a winch or a combination of a winch and a fixed sheave.
5. The municipal sewage pump station construction method according to claim 1, wherein the radial lengths of the plurality of filter discs are different, and the radial length of the longest filter disc is still slightly less than the radius of the installation end face.
6. The municipal sewage pump station construction method according to claim 1, wherein an output shaft of one motor drives all the guide shafts to rotate by means of a straight bevel gear.
7. The municipal sewage pump station construction method according to claim 6, wherein the output shaft of said motor, said spur and bevel gear, the top end of said guide shaft, said connecting pipe are enclosed in a housing.
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| CN111877522B (en) | 2021-11-09 |
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