CN107178144B - Automatic dredging system and method for municipal rainwater and sewage pump station - Google Patents
Automatic dredging system and method for municipal rainwater and sewage pump station Download PDFInfo
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- CN107178144B CN107178144B CN201710575892.1A CN201710575892A CN107178144B CN 107178144 B CN107178144 B CN 107178144B CN 201710575892 A CN201710575892 A CN 201710575892A CN 107178144 B CN107178144 B CN 107178144B
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F7/00—Other installations or implements for operating sewer systems, e.g. for preventing or indicating stoppage; Emptying cesspools
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/10—Collecting-tanks; Equalising-tanks for regulating the run-off; Laying-up basins
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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
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Abstract
The invention relates to an automatic dredging system for a municipal rainwater and sewage pump station, which is characterized in that: the system comprises a pump station and dredging equipment, wherein the dredging equipment comprises a grid dirt separator, a closure quick-opening device, a suspension type sedimentation lifting device and a submersible drainage pump; the pump station comprises a water inlet pipeline, a water inlet gate well, a grid pool, a water collecting pool, a lifting pump chamber, a water outlet pressure pool or a water outlet valve well and a water outlet pipeline; a cut-off reservoir is arranged on one side of the water collecting tank; the other side of the collecting tank corresponding to the interception water storage tank is provided with a sedimentation receiving well, and a sedimentation collecting groove is formed in the position, corresponding to a sedimentation inlet, of the bottom of the collecting tank between the interception water storage tank and the sedimentation receiving well. The invention can realize multidirectional, multi-angle and multi-level dredging operation, relieves the manpower from the heavy dredging work of the pump station collecting basin, eliminates potential safety hazard, reduces the energy consumption and the maintenance cost of the operation of the pump station, ensures that the pump station collecting basin can realize normalization and coherence as soon as possible, has good dredging effect, saves social resources, contributes to environmental protection and the like.
Description
Technical Field
The invention belongs to the technical field of construction of municipal rain and sewage pump stations, and particularly relates to an automatic dredging system and a dredging method for a municipal rain and sewage pump station.
Background
At present, the conditions of sludge deposition and hardening generally exist in rainwater and sewage pump station collecting ponds of some cities in China, so that the operation and normal drainage of a pump station are hindered, and the daily life and trip of people are influenced; the current technology and solutions:
1. manual well descending and dredging: regularly organize manpower into well desilting, the artifical instrument that needs the outfit of going into the well operation includes: gas detection equipment, shovels, mud scrapers, ropes, buckets and the like; the dredging mode has the following defects that personnel go into the well with many potential safety hazards, long consumed time, low efficiency, large labor intensity and low regularity.
2. High-pressure water jet: a high-pressure water pump which is pre-installed at the bottom of the pool is utilized in a pump station water collecting pool, the high-pressure water pump is flushed through nozzles which are densely distributed on a water outlet pipeline, deposited deposition is activated, and then the high-pressure water pump is sucked and transported away at multiple points by a mud suction pump truck; often, after the high-pressure water pump is silted up, the desilting work can not be continued, the high-pressure washing is combined with the mud suction pump truck, the continuity of actual operation is not strong, the labor input and the labor intensity are very large, and the equipment operation and maintenance cost is high.
3. Stirring formula: pre-installing stirring equipment in a pump station water collecting tank, suspending a large amount of deposited sludge through stirring, and then starting a main water pump of the pump station to discharge muddy water to a downstream pipe network or a river system; the processes of stirring, lifting and discharging do not fundamentally solve the problem of sludge discharge, but increase the burden of a downstream drainage pipe network, and the direct discharge of black odorous water to the river system is not allowed along with the implementation of river growth.
Therefore, the automatic dredging system and the dredging method for the municipal rainwater and sewage pump station are provided, which release manpower from heavy dredging work of the pump station collecting tank, eliminate potential safety hazards, reduce energy consumption and maintenance cost of operation of the pump station, realize normalization and continuity of dredging of the pump station collecting tank as soon as possible, save social resources and contribute to environmental protection.
Disclosure of Invention
The invention provides an automatic dredging system and a dredging method for a municipal rainwater and sewage pump station, which solve the technical problems in the known technology, release manpower from heavy dredging work of the pump station collecting tank, eliminate potential safety hazards, reduce energy consumption and maintenance cost of operation of the pump station, realize normalization and continuity of dredging of the pump station collecting tank as soon as possible, save social resources, save energy and protect environment.
The technical scheme adopted by the invention for solving the technical problems in the prior art is as follows:
the utility model provides an automatic desilting system of municipal administration rain, sewage pump station which characterized in that: the system comprises a pump station and dredging equipment, wherein the dredging equipment comprises a grid dirt separator, a closure quick-opening device, a suspension type sedimentation lifting device and a submersible drainage pump; the pump station comprises a plurality of water inlet pipelines connected with municipal rainwater and sewage, the water inlet pipelines are connected with a water inlet of a water inlet gate well, a water inlet gate is installed in the water inlet gate well and connected with a hoist, a grid pool is arranged on the water outlet side of the water inlet gate well, a grid channel is arranged between the adjacent grid pools, the grid pools are adjacent to a water collecting pool, the water collecting pool is adjacent to a lifting pump chamber, and a lifting pump group is installed in the lifting pump chamber; the lifting pump chamber is adjacent to the water outlet pressure pool or the water outlet valve well, each lifting pump set is connected with the water inlet of the water outlet pressure pool or the water outlet valve well, and the water outlet of the water outlet pressure pool or the water outlet valve well is connected with a water outlet pipeline; one side of the water collecting tank is provided with an intercepting reservoir or a sedimentation receiving well, and a water drainage hole communicated with the water collecting tank is arranged between the intercepting reservoir and the water collecting tank; the other side of the corresponding intercepting reservoir collecting tank is provided with an intercepting reservoir or a sedimentation receiving well, and a sedimentation inlet communicated with the collecting tank is arranged between the sedimentation receiving well and the collecting tank; the bottom of the sedimentation receiving well is lower than the bottom of the interception water storage pool, so that an effective collection volume space is formed; a guide slope is arranged at the bottom of the intercepting reservoir; a sedimentation gathering groove is arranged at the position, corresponding to a sedimentation inlet, of the bottom of a water collecting tank between the intercepting reservoir and the sedimentation receiving well, the sedimentation gathering groove is perpendicular to the water inlet direction, and a slope is arranged in the sedimentation gathering groove from the intercepting reservoir to the sedimentation receiving well; the grid sewage removing machine is arranged in the grid pool; the closure quick-opening device is arranged in the closure water storage tank; the suspension type siltation lifting device is movably arranged in a siltation receiving well; and a submerged drainage dry pump is arranged in the sedimentation receiving well and is positioned below the bottom of the sedimentation receiving well.
The invention can also adopt the following technical measures:
and a guide wall is arranged in the water collecting tank close to the side of the lifting pump chamber.
And a structural wall is arranged in the water collecting tank, the water outlet pressure tank or the water outlet valve well, and communication holes are formed in the structural wall.
The water inlet gate well, the grating tank, the water collecting tank and the lifting pump chamber are divided into two independent units by the partition walls along the water inlet and outlet directions; the sedimentation collection tank is divided into two sedimentation collection tanks positioned on the same central line through a partition wall body; one side of each of the two independent water collecting tanks is provided with a sedimentation receiving well; the sedimentation receiving well is arranged corresponding to the sedimentation collecting tank; two drainage holes are arranged on the partition wall body corresponding to the positions of the silting and collecting grooves, the two drainage holes are arranged up and down and are positioned on the same central line, and a group of flow-stopping quick-opening devices are respectively arranged on the two drainage holes;
guide plates are arranged on two sides of the drain hole on the upper part, and the lower ends of the guide plates extend to two sides of the silting and collecting groove.
The device comprises a hydraulic quick cut-off device, a cut-off body and a control device, wherein the cut-off body is connected with a hydraulic piston rod of the hydraulic quick cut-off device and is arranged on a rack in a sliding manner; the frame is fixedly arranged on the wall of the water collecting tank.
A secondary concrete structure body is poured at the position of a drainage hole on the wall body of the water collecting tank, and a connecting piece fixedly connected with the stand is pre-buried at the position, corresponding to the stand, of the secondary concrete structure; the mounting table is prefabricated on the wall body of the water collecting tank above the rack, the hydraulic quick hoist is inversely installed on the upper surface of the mounting table, a hydraulic piston rod of the hydraulic quick hoist vertically extends downwards, and the lower end part of the hydraulic piston rod is connected with a fluid intercepting body.
The intercepting quick-opening device comprises a double-acting hydraulic quick-opening and closing machine, an intercepting body is connected with a hydraulic piston rod of the hydraulic quick-opening and closing machine, the intercepting body is slidably mounted on a gantry frame, sliding grooves are formed in two sides of the gantry frame, two sides of the intercepting body are inserted into the sliding grooves, and the intercepting body slides up and down along the sliding grooves under the action of the hydraulic quick-opening and closing machine to realize quick opening and slow closing; one side of the gantry frame is fixedly connected with a first flange; a water drainage pipe is embedded in a water drainage hole of the water collecting tank; a water outlet of the water drain pipe is provided with a second flange; the first flange of the gantry frame is fixedly connected with the second flange on the water drain pipe through a fastener; installing a intercepting fluid at an outlet of the first flange; the hydraulic quick hoist is inversely arranged on the upper part of the gantry frame, a hydraulic piston rod of the hydraulic quick hoist vertically extends downwards, and the lower end part of the hydraulic piston rod is connected with a fluid intercepting body.
The suspension type sedimentation lifting device is arranged on an upper plate of a sedimentation receiving well, linear guide rails are arranged on two sides of the upper plate along the length direction of the sedimentation receiving well, a walking trolley is assembled on the linear guide rails, a walking driving device for driving the walking trolley to move along the linear guide rails is arranged on the walking trolley, two vertical plates are arranged on the walking trolley in the direction vertical to the upper plate, the lower ends of the vertical plates extend to the position close to the bottom of the sedimentation receiving well, the upper ends of the vertical plates extend upwards, a driving wheel set is arranged between the upper ends of the two vertical plates, and the driving wheel set is connected with a rotary driving device for driving the driving wheel set to rotate through a transmission component; a driven wheel group is arranged between the lower end parts of the vertical plates, a belt is arranged between the driving wheel group and the driven wheel group, a plurality of mud scooping buckets are uniformly hung on the outer side of the belt, and the distance between the mud scooping buckets and the bottom of the sedimentation receiving well is 3-5 cm at the lower limit position; and a receiving hopper is arranged on the walking trolley corresponding to the position of the mud scooping hopper.
The invention also provides a dredging method based on the municipal rainwater and sewage pump station automatic dredging system, which comprises the operations of dredging a siltation collection groove, dredging a grating pond, dredging a water collection groove and siltation lifting the siltation collection groove
1) And desilting operation of the silting collection groove: firstly, closing a water inlet gate of a water inlet gate well, and simultaneously starting a water lifting pump set and a submersible drainage pump in a sedimentation receiving well to drain accumulated water in a water collecting tank; secondly, injecting water into the intercepting reservoir while performing draining operation, so that a liquid level difference is generated between the intercepting reservoir and the reservoir, and a power condition is provided for later silt flushing; thirdly, when the preset liquid level difference value is reached, starting the cut-off quick-opening device, quickly returning the cut-off quick-opening device within 2-5 seconds, quickly flushing high-level water in the cut-off water storage tank to the sedimentation collection tank after the cut-off quick-opening device is opened, and allowing the sediment deposited in the sedimentation collection tank to flow to a sediment receiving well along the sedimentation collection tank under the action of water flow impact; thirdly, at the moment, the submersible drainage pump starts the drainage operation again, and the current dredging operation is finished; if residues exist in the silt flushing process, injecting water into the intercepting water storage tank in an external water source adjusting mode under the condition that the dry tank state is kept, and performing secondary silt flushing when the expected set difference value is achieved in the intercepting water storage tank;
2) And dredging operation of the grid pond: under the dry pond state, the sediment at the bottom of the grid pond is washed and silted by opening the water inlet gate of the water inlet gate well by a certain opening degree and utilizing the principle of small-diameter flow rate;
3) The lower part of a lifting pump group in the water collecting tank is provided with a flow guide slope with 1.5 percent of slope at the bottom of a pump chamber, and the bottom of the pump chamber is flushed with silt by utilizing the water hammer effect generated by the backflow of water in a water pumping pipe when the lifting pump is stopped, so that the silting flows to a silting collecting groove.
4) And (3) silting and lifting operation of the silting and collecting tank: the suspended type sedimentation lifting device is started to lift the sedimentation deposited at the bottom of the sedimentation receiving well, the sedimentation is lifted to the receiving hopper, the receiving hopper is moved away after the receiving hopper is fully loaded, and the receiving hopper can be continuously received by replacing a new receiving hopper.
The invention has the advantages and positive effects that: by adopting the technical scheme, the multi-directional, multi-angle and multi-level dredging operation can be realized, the manpower is released from the heavy dredging work of the pump station collecting tank, the potential safety hazard is eliminated, the energy consumption and the maintenance cost of the operation of the pump station are reduced, the pump station collecting tank dredging is enabled to be frequent and coherent as soon as possible, the dredging effect is good, the social resources are saved, the contribution to environmental protection is made, and the like.
Drawings
FIG. 1 is a schematic structural view of embodiment 1 of the present invention;
FIG. 2 isbase:Sub>A sectional view taken along line A-A;
FIG. 3 is a cross-sectional view B-B of FIG. 1;
FIG. 4 is a cross-sectional view C-C of FIG. 1;
FIG. 5 is a schematic structural view of a cut-off quick-opening device;
FIG. 6 is a schematic view of a shut-off quick-open device mounting structure;
FIG. 7 is a schematic view of another construction of a flow intercepting quick-opening device;
fig. 8 is a schematic view of an installation structure of the intercepting quick-opening device of fig. 7;
fig. 9 is a schematic view of a suspended siltation lift;
FIG. 10 is a schematic diagram of the pump station structure of embodiment 2.
In the figure: 100. a pump station; 110. a water inlet line; 120. a water inlet gate well; 121. a water inlet gate; 122. a hoist; 130. a grid pool; 131. a grid channel; 140. a water collecting tank; 141. silting a gathering tank; 142. a guide wall; 143. a structural wall; 144. a wall body; 145. a secondary concrete structure; 146. a connecting member; 147. a mounting table; 145. a secondary concrete structure; 146. a connecting member; 147. an installation table; 150. a lift pump chamber; 151. lifting a pump group; 160. a water outlet pressure tank; 161. a structural wall; 170. an outlet line; 180. intercepting a reservoir; 181. a water drain hole; 190. silting a receiving well; 191. an upper plate; 210. a grid cleaner; 220. a closure quick-opening device; 221. a double-acting hydraulic quick hoist; 222. a fluid stopping body; 223. a frame; 224. a chute; 225. a gantry frame; 226. a first flange; 227. a drain pipe; 228. a second flange; 230. a suspended siltation hoist; 231. a linear guide rail; 232. a walking trolley; 233. a travel drive device; 234. a vertical plate; 235. a driving wheel set; 236. a transmission member; 237. a rotation driving device; 238. a driven wheel set; 239. a belt; 2390. scooping a mud bucket; 2391. a receiving hopper; 240. a submersible draining pump; 300. separating the wall body; 310. a drain hole;
Detailed Description
In order to further understand the contents, features and effects of the present invention, the following embodiments are illustrated and described in detail with reference to the accompanying drawings:
embodiment 1, please refer to fig. 1 to 4, a municipal rainwater and sewage pumping station automatic dredging system comprises a pumping station 100 and dredging equipment, wherein the dredging equipment comprises a grid sewage-removing machine 210, a cut-off quick-opening device 220, a suspended type siltation lifting device 230 and a submersible drainage pump 240; the pump station 100 comprises a plurality of water inlet pipelines 110 connected with municipal rainwater and sewage, the water inlet pipelines are connected with the water inlet of a water inlet gate well 120, a water inlet gate 121 is installed in the water inlet gate well, the water inlet gate is connected with a hoist 122, the hoist controls the opening and closing of the water inlet gate, and the working principle of the pump station belongs to the known technology; a grid pool 130 is arranged on the water outlet side of the water inlet gate well 120, a grid channel 131 is arranged between the adjacent grid pools, the grid pools are adjacent to a water collecting pool 140, the water collecting pool is adjacent to a lifting pump chamber 150, and a lifting pump group 151 is arranged in the lifting pump chamber; the lift pump chambers are adjacent to a water outlet pressure tank or a water outlet valve well, in this embodiment, a water outlet pressure tank 160, each lift pump group is connected with a water inlet of the water outlet pressure tank, and a water outlet of the water outlet pressure tank or the water outlet valve well is connected with a water outlet pipeline 170; one side of the water collecting tank is provided with an intercepting reservoir 180, and a water drainage hole 181 communicated with the water collecting tank is arranged between the intercepting reservoir and the water collecting tank; a sedimentation receiving well 190 is arranged corresponding to the other side of the water collecting tank of the intercepting reservoir, a sedimentation inlet communicated with the water collecting tank is arranged between the sedimentation receiving well and the water collecting tank, and the bottom of the sedimentation receiving well is lower than the bottom of the intercepting reservoir, so that an effective collecting volume space is formed; a guide slope 181 is arranged at the bottom of the intercepting reservoir to prevent sediment from depositing at the bottom of the intercepting reservoir; a sedimentation collection groove 141 is formed in the bottom of the water collection tank between the interception water storage tank and the sedimentation receiving well, corresponds to a sedimentation inlet, is perpendicular to the water inlet direction, and is provided with a slope in the direction from the interception water storage tank to the sedimentation receiving well; the grid sewage remover 210 is arranged in the grid pool 130; the intercepting quick-opening device 220 is arranged in the intercepting water reservoir 180; the suspended sludge hoist 230 is movably mounted in the sludge receiving well 190; the sedimentation receiving well is provided with a submersible drainage dry pump 240 which is positioned below the bottom of the sedimentation receiving well.
To achieve the diversion within the sump, a diversion wall 142 is provided within the sump 140 adjacent the lift pump chamber side.
In order to improve the strength of the pump station, structural walls 143 and 161 are arranged in the water collecting tank, the water outlet pressure tank or the water outlet valve well, and communication holes are formed in the structural walls.
Referring to fig. 5 and 6, the closure quick-opening device 220 includes a position of a double-acting hydraulic quick-opening hoist 221. The closure body 222 is connected with a hydraulic piston rod of the hydraulic quick hoist, and the stroke of the hydraulic quick hoist is 30% greater than the effective stroke of the closure body; the fluid intercepting body is slidably mounted on a rack 223, sliding grooves 224 are formed in two sides of the rack, two sides of the fluid intercepting body are inserted into the sliding grooves, and the fluid intercepting body slides up and down along the sliding grooves under the action of a hydraulic quick-opening hoist to realize quick opening and slow closing; the frame 223 is fixedly mounted on the wall 144 of the sump. The hydraulic station is used as a power output center in a municipal rainwater and sewage pump station for the first time, so that single control and multi-machine joint control of the quick-open type cut-off device are realized, manual and automatic control is freely switched, and the running state is uploaded in real time; opening the fluid interception body for 2-5 seconds by using the return stroke of the oil cylinder; the closure quick-opening device has the characteristics of good economy, reliable performance, low cost, further improved efficiency and service life, reduced environmental pollution and the like.
In order to avoid damaging the wall of the water collecting tank, a secondary concrete structure 145 is poured at the position of a water drainage hole on the wall of the water collecting tank, and a connecting piece 146 fixedly connected with the rack is pre-buried at the position, corresponding to the rack, on the secondary concrete structure; an installation platform 147 is prefabricated on the wall body of the water collecting tank above the rack, the hydraulic quick hoist is inversely installed on the upper surface of the installation platform, a hydraulic piston rod of the hydraulic quick hoist 221 vertically extends downwards, and the lower end part of the hydraulic piston rod is connected with a fluid intercepting body 222.
On the premise of not influencing the strength of the wall body of the integral water collecting tank, the installation efficiency of the interception quick-opening device is improved, the interception quick-opening device can also adopt the following structure, please refer to fig. 7 and 8, the interception quick-opening device comprises a double-acting hydraulic quick-opening machine 221, an interception body 222 connected with a hydraulic piston rod of the hydraulic quick-opening machine, the interception body is slidably installed on a gantry frame 225, sliding grooves 224 are formed in two sides of the gantry frame 225, two sides of the interception body 222 are inserted into the sliding grooves, and the interception body slides up and down along the sliding grooves under the action of the hydraulic quick-opening machine to realize quick opening and slow closing; one side of the gantry frame 225 is fixedly connected with a first flange 226; a drain pipe 227 is pre-embedded in a drain hole of the water collecting tank; a second flange 228 is arranged at the water outlet of the water drain pipe; the first flange of the gantry frame is fixedly connected with the second flange on the water drain pipe through a fastener; installing a intercepting fluid 222 at the outlet of the first flange; the hydraulic quick hoist is inversely arranged on the upper part of the gantry frame 225, a hydraulic piston rod of the hydraulic quick hoist vertically extends downwards, and the lower end part of the hydraulic piston rod is connected with a fluid intercepting body 222.
Referring to fig. 9, the suspension type sludge lifting device 230 is installed on an upper plate 191 of the sludge receiving well, linear guide rails 231 are installed on both sides of the upper plate along the length direction of the sludge receiving well, a traveling trolley 232 is installed on the linear guide rails, a traveling driving device 233 for driving the traveling trolley to move along the linear guide rails is installed on the traveling trolley, two vertical plates 234 are installed on the traveling trolley in a direction perpendicular to the upper plate, the lower ends of the vertical plates extend to the upper position of the bottom of the sludge receiving well, the upper ends of the vertical plates extend upwards, a driving wheel set 235 is installed between the upper ends of the two vertical plates, and the driving wheel set is connected with a rotation driving device 237 for driving the driving wheel set to rotate through a transmission member 236; a driven wheel group 238 is arranged between the lower end parts of the vertical plates 234, a belt 239 is arranged between the driving wheel group and the driven wheel group, a plurality of mud scooping buckets 2390 are uniformly hung on the outer side of the belt, and the mud scooping buckets are 3-5 cm away from the bottom of the deposition receiving well at the lower limit position; a receiving hopper 2391 is arranged on the travelling trolley corresponding to the position of the mud scooping hopper; the length direction that drives whole device and receive the well along the siltation under travel drive's drive removes, the siltation that will deposit in siltation receiving well bottom is ladled out to the mud bucket that ladles out that is located lower extreme position at removal in-process, the mud bucket that ladles out on rotary drive's effect belt after ladling out takes the siltation upward movement gradually, in the siltation that ladles out the mud bucket when moving to upper extreme position spills gradually and falls the hopper that connects on the dolly of walking, after receiving the hopper full load, will connect the hopper to remove, change a new hopper that connects and can connect mud in succession.
In embodiment 2, in order to improve the rationality of the pump station structure and ensure that the pump station can still normally operate during maintenance, partition walls 300 are arranged at the middle positions of the water inlet gate well 120, the grid pond 130, the water collecting pond 140 and the lifting pump chamber 150 along the water inlet and outlet direction, and divide the water inlet gate well, the grid pond, the water collecting pond and the lifting pump chamber into two independent units; the deposition collecting groove 141 is divided into two deposition collecting grooves on the same central line by a separating wall body; a sedimentation receiving well 190 is respectively arranged at one side of each of the two independent water collecting ponds; the sedimentation receiving well is arranged corresponding to the sedimentation collecting tank; the partition wall body is provided with two drain holes 310 corresponding to the silting and collecting groove, the two drain holes are arranged up and down and are positioned on the same central line, and a group of flow-stopping quick-opening devices 220 are respectively arranged on the two drain holes; therefore, the two independent units can be alternately used, the working efficiency is improved, and the service life of pump station equipment is prolonged; in order to maximally ensure the scouring of the upper drain holes to the sedimentation collection tank, flow deflectors 320 are arranged on two sides of the upper drain holes, and the lower ends of the flow deflectors extend to two sides of the sedimentation collection tank.
The invention also provides a dredging method based on the municipal rainwater and sewage pump station automatic dredging system, which comprises the operations of dredging a siltation collection groove, dredging a grating pond, dredging a water collection groove and siltation lifting the siltation collection groove
1) And desilting operation of the silting collection groove: firstly, closing a water inlet gate of a water inlet gate well, and simultaneously starting a water lifting pump set and a submersible drainage pump in a sedimentation receiving well to drain accumulated water in a water collecting tank; secondly, injecting water into the interception water storage tank during draining operation, so that a liquid level difference is generated between the interception water storage tank and the water storage tank, and power conditions are provided for later silt flushing; thirdly, when the expected set liquid level difference is reached, starting the cut-off quick-opening device, quickly returning the cut-off quick-opening device within 2-5 seconds, quickly flushing high-level water in the cut-off water storage tank to a sedimentation collection tank after the cut-off quick-opening device is opened, and allowing the sediment deposited in the sedimentation collection tank to flow to a sedimentation receiving well along the sedimentation collection tank under the action of water flow impact; thirdly, at the moment, the submersible drainage pump starts the drainage operation again, and the current dredging operation is finished; if residues exist in the silt flushing process, injecting water into the intercepting water storage tank in an external water source adjusting mode under the condition that the dry tank state is kept, and performing secondary silt flushing when the expected set difference value is achieved in the intercepting water storage tank; the water in the intercepting reservoir can be completely extracted by a pump by utilizing the water in the collecting reservoir, the current water level of the collecting reservoir can also be used as a main water source, and when the water level in the intercepting reservoir is less than an expected set value, the intercepting reservoir can be supplemented by an external water regulation source until the water level reaches the expected set value; when the first dredging is finished and the intercepting reservoir needs to store water again, a water inlet gate of a water inlet gate well can be opened firstly, when the water level of the water collecting pool rises to a certain liquid level, the intercepting fluid is opened, the principle of the communicating vessel is utilized, the liquid level in the intercepting reservoir is consistent with the liquid level in the water collecting pool, at the moment, the intercepting fluid is closed until the water drainage hole is sealed by the intercepting fluid, and when the water level in the intercepting reservoir is less than an expected set value, the intercepting reservoir can be supplemented by an external water source until the expected set value is reached; in addition, rainwater which can be collected by the intercepting reservoir can be used as a water source when the dredging operation is not carried out.
2) And dredging operation of the grating pool: under the dry pond state, the water inlet gate of the water inlet gate well is opened to a certain opening degree, and the deposit at the bottom of the grid pond is washed and silted by using the small-diameter flow velocity principle;
3) The below of lifting pump group in the sump, the pump chamber bottom is equipped with the water conservancy diversion slope of 1.5% slope, and the water hammer effect that the water reflux produced in the pump pipe when utilizing the lift pump to shut down washes silt to the pump chamber bottom, makes the siltation flow direction siltation collection groove.
4) And (3) silting and lifting operation of a silting and collecting tank: the suspended sediment lifting device is started to lift sediment deposited at the bottom of the sediment receiving well, the sediment is lifted to the receiving hopper, after the receiving hopper is fully loaded, the receiving hopper is removed, and the sediment can be continuously received by replacing a new receiving hopper.
By adopting the technical scheme, the multi-direction, multi-angle and multi-layer dredging operation can be realized, the potential safety hazard is relieved and eliminated from the heavy dredging work of the pump station collecting tank, the energy consumption and the maintenance cost of the operation of the pump station are reduced, the pump station collecting tank can realize the normalization and the coherence as soon as possible, the dredging effect is good, the social resources are saved, and the contribution is made to the environmental protection.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications, equivalent changes and modifications made to the above embodiment according to the technical spirit of the present invention are within the scope of the technical solution of the present invention.
Claims (6)
1. The dredging method of the automatic dredging system of the municipal rainwater and sewage pump station is characterized in that: the automatic dredging system of the municipal rainwater and sewage pump station comprises a pump station and dredging equipment, wherein the dredging equipment comprises a grid sewage remover, a closure quick-opening device, a suspension type sedimentation lifting device and a submersible drainage pump; the pump station comprises a plurality of water inlet pipelines connected with municipal rainwater and sewage, the water inlet pipelines are connected with a water inlet of a water inlet gate well, a water inlet gate is installed in the water inlet gate well and connected with a hoist, a grid pool is arranged on the water outlet side of the water inlet gate well, a grid channel is arranged between the adjacent grid pools, the grid pools are adjacent to a water collecting pool, the water collecting pool is adjacent to a lifting pump chamber, and a lifting pump group is installed in the lifting pump chamber; the lifting pump chambers are adjacent to the water outlet pressure pool or the water outlet valve well, each lifting pump set is connected with the water inlet of the water outlet pressure pool or the water outlet valve well, and the water outlet of the water outlet pressure pool or the water outlet valve well is connected with a water outlet pipeline;
one side of the water collecting tank is provided with an intercepting water reservoir, and a water drainage hole communicated with the water collecting tank is arranged between the intercepting water reservoir and the water collecting tank; a sedimentation receiving well is arranged on the other side corresponding to the collecting tank of the intercepting reservoir, and a sedimentation inlet communicated with the collecting tank is arranged between the sedimentation receiving well and the collecting tank; the bottom of the sedimentation receiving well is lower than the bottom of the interception water storage pool, so that an effective collection volume space is formed; a guide slope is arranged at the bottom of the intercepting reservoir; a sedimentation gathering groove is arranged at the bottom of the water collecting tank between the interception water storage tank and the sedimentation receiving well corresponding to a sedimentation inlet, the sedimentation gathering groove is vertical to the water inlet direction, and the sedimentation gathering groove is provided with a slope from the interception water storage tank to the sedimentation receiving well; the grid sewage removing machine is arranged in the grid pool; the interception quick-opening device is arranged in the interception water storage tank; the suspension type siltation lifting device is movably arranged in a siltation receiving well; a submerged drainage dry pump is arranged in the sedimentation receiving well and is positioned below the bottom of the sedimentation receiving well;
the suspension type sedimentation lifting device is arranged on an upper plate of a sedimentation receiving well, linear guide rails are arranged on two sides of the upper plate along the length direction of the sedimentation receiving well, a walking trolley is assembled on the linear guide rails, a walking driving device for driving the walking trolley to move along the linear guide rails is arranged on the walking trolley, two vertical plates are arranged on the walking trolley in the direction vertical to the upper plate, the lower ends of the vertical plates extend to the position close to the bottom of the sedimentation receiving well, the upper end parts of the vertical plates extend upwards, a driving wheel set is arranged between the upper end parts of the two vertical plates, and the driving wheel set is connected with a rotary driving device for driving the driving wheel set to rotate through a transmission component; a driven wheel group is arranged between the lower end parts of the vertical plates, a belt is arranged between the driving wheel group and the driven wheel group, a plurality of mud scooping buckets are uniformly hung on the outer side of the belt, and the distance between the mud scooping buckets and the bottom of the deposition receiving well is 3-5 cm at the lower limit position; a receiving hopper is arranged on the travelling trolley corresponding to the position of the mud scooping hopper;
the dredging method of the automatic dredging system of the municipal rainwater and sewage pump station comprises the following steps: siltation lifting operation including siltation collection tank desilting operation, grid pond desilting operation and catch basin desilting operation and siltation receiving well: 1) And desilting operation of the silting collection groove: firstly, closing a water inlet gate of a water inlet gate well, and simultaneously starting a lifting pump set and a submersible drainage pump in a sedimentation receiving well to drain accumulated water in a water collecting tank; secondly, injecting water into the intercepting reservoir while performing draining operation, so that a liquid level difference is generated between the intercepting reservoir and the reservoir, and a power condition is provided for later silt flushing; thirdly, when the expected set liquid level difference is reached, starting the cut-off quick-opening device, quickly returning the cut-off quick-opening device within 2-5 seconds, quickly flushing high-level water in the cut-off water storage tank to a sedimentation collection tank after the cut-off quick-opening device is opened, and allowing the sediment deposited in the sedimentation collection tank to flow to a sedimentation receiving well along the sedimentation collection tank under the action of water flow impact; fourthly, at the moment, the submersible drainage pump starts the drainage operation again, and the current dredging operation is finished; if residues exist in the silt flushing process, injecting water into the intercepting water storage tank in an external water source adjusting mode under the condition that the dry tank state is kept, and performing secondary silt flushing when the expected set difference value is achieved in the intercepting water storage tank; 2) And dredging operation of the grating pool: under the dry pond state, the sediment at the bottom of the grid pond is washed and silted by opening the water inlet gate of the water inlet gate well by a certain opening degree and utilizing the principle of small-diameter flow rate; 3) And dredging operation of the water collecting tank: a guide slope with the gradient of 1.5% is arranged at the bottom of the pump chamber below a lifting pump group in the water collecting tank, and the bottom of the pump chamber is flushed and silted by utilizing the water hammer effect generated by the backflow of water in a water pumping pipe when the lifting pump group is stopped, so that the silted water flows to a silting and collecting tank; 4) And (3) silting and lifting operation of a silting receiving well: the suspended type sedimentation lifting device is started to lift the sedimentation deposited at the bottom of the sedimentation receiving well, the sedimentation is lifted to the receiving hopper, the receiving hopper is moved away after the receiving hopper is fully loaded, and the receiving hopper can be continuously received by replacing a new receiving hopper.
2. The dredging method of the automatic dredging system of the municipal rainwater and sewage pump station according to claim 1, which is characterized in that: and a guide wall is arranged in the water collecting tank close to the side of the lifting pump chamber.
3. The dredging method of the automatic dredging system of the municipal rainwater and sewage pump station according to claim 1, which is characterized in that: and a structural wall is arranged in the water collecting tank, the water outlet pressure tank or the water outlet valve well, and communication holes are formed in the structural wall.
4. The dredging method of the automatic dredging system of the municipal rainwater and sewage pump station according to claim 1, which is characterized in that: the intercepting quick-opening device comprises a double-acting hydraulic quick-opening and closing machine, a hydraulic piston rod of the hydraulic quick-opening and closing machine is connected with a fluid intercepting body, the fluid intercepting body is slidably mounted on a rack, sliding grooves are formed in two sides of the rack, two sides of the fluid intercepting body are inserted into the sliding grooves, and the fluid intercepting quick-opening and quick-opening device can slide up and down along the sliding grooves under the action of the hydraulic quick-opening and closing machine to realize quick opening and slow closing; the frame is fixedly arranged on the wall of the water collecting tank.
5. The dredging method of the automatic dredging system of the municipal rainwater and sewage pump station according to claim 4, characterized in that: a secondary concrete structure is poured at the position of a water drainage hole on the wall body of the water collecting tank, and a connecting piece fixedly connected with the frame is pre-buried at the position, corresponding to the frame, of the secondary concrete structure; the mounting table is prefabricated on the wall body of the water collecting tank above the rack, the hydraulic quick hoist is inversely installed on the upper surface of the mounting table, a hydraulic piston rod of the hydraulic quick hoist vertically extends downwards, and the lower end part of the hydraulic piston rod is connected with a fluid-intercepting body.
6. The dredging method of the automatic dredging system of the municipal rainwater and sewage pump station according to claim 1, which is characterized in that: the intercepting quick-opening device comprises a double-acting hydraulic quick-opening and closing machine, a hydraulic piston rod of the hydraulic quick-opening and closing machine is connected with a fluid intercepting body, the fluid intercepting body is slidably mounted on a gantry frame, sliding grooves are formed in two sides of the gantry frame, two sides of the fluid intercepting body are inserted into the sliding grooves, and the fluid intercepting body slides up and down along the sliding grooves under the action of the hydraulic quick-opening and closing machine to realize quick opening and slow closing; one side of the gantry frame is fixedly connected with a first flange; a water drainage pipe is embedded in a water drainage hole of the water collecting tank; a water outlet of the water drain pipe is provided with a second flange; the first flange of the gantry frame is fixedly connected with the second flange on the water drain pipe through a fastener; installing a intercepting fluid at an outlet of the first flange; the hydraulic quick hoist is inversely arranged on the upper part of the gantry frame, a hydraulic piston rod of the hydraulic quick hoist vertically extends downwards, and the lower end part of the hydraulic piston rod is connected with a fluid intercepting body.
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| CN108560694A (en) * | 2018-03-12 | 2018-09-21 | 上海市城市建设设计研究总院（集团）有限公司 | Rainfall pumping station with test run function |
| CN113090325A (en) * | 2021-03-17 | 2021-07-09 | 中铁大桥勘测设计院集团有限公司 | Construction method for tunnel drainage ditch |
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Effective date of registration: 20200611 Address after: 300382 building E83, No.1, Sizhi Road, Xuefu Industrial Zone, Xiqing District, Tianjin Applicant after: SKF (Tianjin) Intelligent Water System Co.,Ltd. Address before: Lutai Town, Tianjin city Ninghe County 301500 Jin Yu branch cotton company compound Applicant before: Chen Zhensheng |
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Address after: 301500, 1500 meters west of the Independent Village Committee in Dabeijiangu Town, Ninghe District, Tianjin City Patentee after: SKF (Tianjin) Intelligent Water System Co.,Ltd. Address before: Building E83, No. 1 Sizhi Road, Xuefu Industrial Zone, Xiqing District, Tianjin, 300382 Patentee before: SKF (Tianjin) Intelligent Water System Co.,Ltd. |