A pump station without hidden trouble

Abstract

The present application provides a kind of hidden pump station, including: drainage pump, for being installed below pump pool mouth, including pump body and lifting device, pump body is installed in pump station pool, lifting device includes pump cover, pump cover can be separated or coupled with pump body, and can be operated on ground to realize body cover separation and coupling.Body cover separates, lifting device can be lifted and extracted to ground outside pump pool mouth.Pump body bottom is equipped with pump suction inlet, after lifting device is extracted to pump station pool, grabbing device can pass through pump pool mouth and pump suction inlet in turn, then grab sewage at pump suction inlet.This kind of pump station does not install filter screen at pump suction inlet, after a period of time of pump station use, lifting device can be lifted up, and ground is pass through grabbing device etc.to pump suction inlet and actively clean sewage dredge, so that personnel can not go to the bottom of sewage pool to carry out maintenance to pump, to improve the working environment of maintenance personnel, solve the safety problem that personnel enters to the bottom of pool and maintains.

Description

Technical Field

[0001] This invention relates to the field of drainage, and more specifically, to a safe and reliable pumping station. Background Technology

[0002] Most existing stormwater and sewage pumping stations use submersible sewage pumps, which must start at a high water level and stop at a low water level. Additionally, to further prevent clogging by debris at the bottom of the tank, existing pumping stations have filters installed at the pump inlet so that sewage can be filtered before being discharged by the sewage pump. These pumping stations do not require proactive cleaning during normal operation; cleaning and maintenance are typically only carried out after blockages occur. The cleaning process involves first raising the submersible sewage pump to the ground, then having cleaning personnel descend to the bottom of the tank to remove the settled sludge and debris. However, this type of pumping station presents the following problems during use:

[0003] 1. Because submersible sewage pumps have a shutdown protection water level, the motor is prone to burnout if it is exposed above the water surface. The high shutdown water level, coupled with an even higher startup water level, causes severe sedimentation of sewage and sludge. This reduces the inlet flow rate, causing stagnation and further sedimentation in the inlet pipe, leading to blockages at the storm and sewage pump inlet.

[0004] 2. During the operation of the pumping station, the water level below the protection level of the collection tank remains for an extended period, leading to prolonged sedimentation and fermentation of sewage and waste. During this fermentation process, the oxygen-consuming decomposition of organic matter causes the oxygen consumption rate in the water to exceed the reoxygenation rate, resulting in oxygen deficiency. This leads to incomplete and slowed degradation of organic matter, and the anaerobic biodegradation process generates odorous substances such as hydrogen sulfide, amines, ammonia, and thiols, while also forming black substances such as FeS and MnS, causing the water to become black and smelly. Furthermore, because dredging and maintenance require personnel to descend to the bottom of the tank, serious safety accidents occur annually due to dredging and maintenance issues.

[0005] 3. Existing submersible sewage pumps have drawbacks such as cumbersome structure, poor interchangeability, inconvenient maintenance, short inspection and repair cycle, and need to be returned to the factory for repair.

[0006] Therefore, how to design a pump station that can easily dredge the silt without requiring personnel to go down to the bottom of the pool has become an urgent problem to be solved. Summary of the Invention

[0007] The present invention aims to solve at least one of the technical problems existing in the prior art.

[0008] Therefore, one object of the present invention is to provide a pumping station without hidden dangers.

[0009] This invention provides a safe and reliable pumping station with a drainage pump installed below the pump pool inlet. The drainage pump includes a pump body and a lifting device. The pump body is installed inside the pumping station pool. The lifting device includes a pump cover, which can be separated or coupled to the pump body via an automatic coupling device. The automatic coupling device can separate and couple the pump cover from the pump body above the pump pool inlet. When the pump cover is separated from the pump body, the lifting device can be lifted and pulled out of the pump pool inlet. The bottom of the pump body is provided with a pump suction inlet. After the lifting device is pulled out into the pumping station pool, a grabbing device can be inserted through the pump pool inlet and extend into the pump pool to grab dirt at the pump suction inlet.

[0010] The hazard-free pumping station provided by an embodiment of the present invention includes a drainage pump, which is installed below the pump pool inlet. The pump pool inlet can be the wellhead of an integrated pumping station or the inlet of other wells, pits, holes, etc., that require the use of a drainage pump. The drainage pump is used to discharge sewage from wells, pits, holes, etc. The drainage pump is a lift pump with a coupled pump cover and pump body. After installation in the pumping station pool, this type of drainage pump can lift the pump cover, motor, and rotating assembly as a whole above the pump pool inlet, i.e., on the ground, to achieve the removal of the pump cover, motor, and rotating assembly above the ground. This configuration, by detachably connecting the pump cover and pump body through an automatic coupling device, allows for rapid disassembly of the pump cover and pump body outside the pumping station pool (above the pump pool inlet, i.e., on the ground), enabling rapid sludge removal without requiring return to the factory for maintenance. This allows the pump body to be opened on-site at the pumping station, thereby disassembling the drainage pump's lifting device and facilitating subsequent cleaning using grabbing devices or other methods. Furthermore, in this application, when installing the drainage pump to form a pumping station, no filter screen is installed at the pump inlet; that is, the pump inlet is completely open. This allows external cleaning devices to be inserted into the pump body from the ground after the pump is lifted and removed, extending through the pump inlet into the pumping station pool to grab and clean the debris at the inlet. Specifically, after a period of use, the pumping station can have its lifting device (comprising the pump cover, motor, and rotating assembly) lifted up. Then, a grabbing device (which can be a pre-installed dedicated device or a hook-like structure found by maintenance personnel) can be used to actively clean and unclog the pump inlet, preventing blockage due to prolonged neglect. With this setup, if large debris adheres to the pump inlet during operation, the pumping station opening can be opened directly, the lifting device (including the pump cover) lifted and removed, and the debris at the pump inlet can then be removed using a temporary or specially configured grabbing device. This setup allows for pump maintenance without personnel needing to descend to the bottom of the sewage tank. This improves the working environment for maintenance personnel. Furthermore, the pump station tank is typically sealed, inevitably containing toxic gases such as carbon monoxide and chlorine, posing a risk of poisoning to personnel descending to the bottom. This application, however, cleans the sewage from the ground, eliminating the need for personnel to descend to the bottom of the tank and completely resolving the safety issues associated with such access. This method also makes pump station cleaning easier to perform, allowing for multiple pre-emptive cleanings. This transforms reactive cleaning caused by blockages into proactive cleaning, effectively preventing blockages and significantly reducing potential hazards, potentially achieving a hazard-free pump station.

[0011] Furthermore, in this application, the drainage pump adopts body-cover coupling technology, which allows for ground disassembly and dredging, convenient maintenance without requiring return to the factory for maintenance, and is safe and reliable.

[0012] In existing solutions, the drainage pumps in the pumping stations are not body-cap coupled lift pumps. Therefore, the motor, rotor, and other components of the drainage pump cannot be lifted separately from the ground. This is why the entire pump must be lifted up for cleaning in existing solutions. Furthermore, existing solutions have filters installed at the pump inlet. The presence of these filters prevents gripping devices from being extended from the ground outside the pump pool, thus preventing cleaning of the existing pumping stations from the ground. In this application, the combination of a body-cap coupled lift pump and the elimination of the filter at the pump inlet allows for cleaning of the pumping station entirely from the ground, without requiring the drainage pump to be fully lifted up or for maintenance personnel to descend into the pumping station pool.

[0013] Furthermore, to improve the ease of cleaning, the drainage pump can be equipped with a special pump capable of completely draining the water from the bottom of the pool, i.e., a pump that does not require a start-up water level or a safety water level. This exposes the pump inlet after the water is drained, making it easier to grab debris from the pump inlet using grabbing devices on the ground. In contrast, existing pumps generally require a start-up water level and a shutdown protection water level, making it impossible to completely drain the water. Therefore, debris is dispersed in the remaining water and does not easily accumulate at the pump inlet. This is another reason why existing pumping stations do not consider cleaning from the ground. Of course, in practice, it is also possible to set the pump as a regular submersible sewage pump. In this case, after the pump is lifted by the lifting device, the grabbing device can also be extended from the pump inlet to grab the sewage. However, the maintenance personnel on the ground cannot see the bottom of the pool, which will result in a relatively low cleaning efficiency. Of course, in this solution, the concentration of sewage is low, which will also result in a relatively low cleaning efficiency. However, this solution itself is feasible and falls within the scope of protection of this application.

[0014] In the above technical solution, the pump station without hidden dangers also includes: a water collection tank, which is set at the bottom of the pump station pool, and the pump inlet is located in the water collection tank.

[0015] In this technical solution, a water collection tank is set at the bottom of the pump station pool. This allows waste and other contaminants to be collected in the water collection tank. Especially when the drainage pump is not a pump with a pre-reserved start-up water level and a shutdown protection water level, the water collection tank can concentrate the pollutants in the water collection tank, which can greatly improve the efficiency of maintenance personnel to clean up the contaminants on the ground using grabbing devices.

[0016] The water collection trough is trapezoidal, but other shapes are also acceptable. The insertion depth of the pump suction inlet into the water collection trough can be set as needed, as can the width and diameter of the trough. Ideally, the depth, width, and diameter should be designed to allow the bottom of the pool to be emptied, with the top of the trough just exposed.

[0017] In the above technical solution, the hidden danger-free pumping station also includes: an extraction device that can be installed into the pumping station pool through the pump pool inlet and can be lifted and extracted outside the pumping station pool; and a collection bag, the open end of which is installed at the pump pool inlet, and the bottom of which is fitted onto the extraction device. The collection bag is used to wrap the extraction device when it is lifted upwards to extract it.

[0018] The present invention provides a hidden danger-free pumping station, including a lifting device, a grabbing device, and other extraction devices, as well as a collection bag. These lifting devices and grabbing devices can be assemblies composed of a pump cover, motor, and rotating assembly in a body-cover coupled lifting pump, or they can be shearing devices installed at the inlet of the integrated pumping station. Of course, the lifting devices and grabbing devices can also be any component that can be lifted and extracted above the pump pool inlet, i.e., on the ground (such as an externally configured grabbing device for clearing the suction inlet of the drainage pump). Since these components are used in the pumping station pool, they carry a certain amount of sewage or waste when lifted up. This application addresses this type of lifting device and grabbing device by pre-installing a collection bag at the pump pool inlet. Specifically, the open end of the collection bag is installed at the pump pool inlet, which can be the wellhead of the integrated pumping station, or the inlet of other wells, pits, or holes that require the use of a drainage pump. The bottom of the storage bag is fitted over the lifting device, gripping device, or other extraction device. This allows maintenance personnel to fold down and cover the portion of the device located below the bottom of the bag when lifting it upwards to remove it. The length of the storage bag should be determined based on the length of the area to be covered; that is, the distance from the bottom of the storage bag to the bottom of the extraction device should be less than the length of the bag itself, allowing it to fold down and wrap around the lower part of the device. This design, with the storage bag covering the lifting device, prevents maintenance personnel from coming into contact with wastewater or debris from the extraction device, ensuring their health throughout the operation. Meanwhile, this setup prevents maintenance personnel from directly contacting sewage and debris from the lifting and grabbing devices, and also prevents these devices from contaminating the ground, thus eliminating the spread of viruses, bacteria, and other harmful substances from the sewage and debris. This ensures the safety of maintenance personnel and significantly reduces the occurrence of serious safety accidents caused by dredging and maintenance issues.

[0019] The lifting and gripping devices, etc., which are wrapped in storage bags, can be specially treated according to standards if necessary. The storage bags can also be treated according to relevant requirements. Of course, depending on actual needs, special treatment may not be necessary if it is ensured that the lifting and gripping devices are safe. In particular, when the lifting and gripping devices are part of a liftable assembly consisting of the pump cover, motor, and rotating assembly in a body-cover coupled lifting pump, they can be simply treated and reinstalled in the pump station pool after cleaning.

[0020] The number of storage bags can be set according to the number of extraction devices that need to be raised. Generally, the number of storage bags corresponds one-to-one with the number of extraction devices that need to be raised.

[0021] In one specific embodiment, the extraction device includes a lifting device, and the collection bag includes a first collection bag adapted to the lifting device. That is, the extraction device includes the lifting device, and a first collection bag is installed for the lifting device. In this configuration, the first collection bag is pre-installed for the lifting device, which consists of the pump cover, motor, and rotating assembly. The open end of the first collection bag is sealed at the pump pool inlet, and the bottom of the first collection bag is fixed and fitted over the lifting device (mainly the lifting rod). The lower end of the lifting device passes through the bottom of the first collection bag and is fixed inside the pump pool. In other words, the entire first collection bag is fitted over the upper part of the lifting device. When lifting the device upwards to remove it, the first collection bag can be folded back and wrapped around the lower part of the lifting device to prevent sewage or other contaminants from polluting the ground, soiling maintenance personnel, or releasing toxic gases. This improves the working environment for maintenance personnel and ensures the safety of cleaning the pump station. In this embodiment, the first collection bag is mainly used to wrap the motor, pump cover, and rotating assembly connected to the motor. This structure allows for the lifting device, comprising the pump cover, motor, and rotating assembly, to be raised after a period of pump station operation. Then, a grabbing device actively cleans and unclogs the pump inlet, preventing blockages caused by prolonged neglect. When large amounts of debris adhere to the pump inlet during operation, the pump tank opening can be opened directly, the lifting device (including the pump cover) removed, and the debris cleared from the inlet using the grabbing device. This design eliminates the need for personnel to descend to the bottom of the sewage tank for pump maintenance, ensuring their safety. Furthermore, this method facilitates pump station cleaning, allowing for multiple pre-emptive cleanings. It transforms reactive cleaning caused by blockages into proactive cleaning, effectively resolving the problem of frequent blockages and significantly reducing potential hazards, thus achieving a degree of hazard-free pump station operation.

[0022] In any of the above technical solutions, the hazard-free pumping station also includes a cooling channel. One end of the cooling channel is connected to an external water source or the drain pipe of the drainage pump, meaning the inlet of the cooling channel is connected to the water source. The other end of the cooling channel is located at the motor of the drainage pump and is used to cool the motor. In other words, the water discharged from the other end of the cooling channel can act on the motor to cool it.

[0023] In this technical solution, water entering the cooling channel can act on the motor, thus cooling it. This setup allows the cooling channel inlet to be closed when the drainage pump starts submerged, allowing the motor to be cooled by the water in the pumping station pool. When the pump motor exceeds the preset liquid level, water can be supplied to the cooling channel to cool the motor. This design allows the motor to start both submerged and above the water surface, enabling more thorough drainage of the pumping station pool and reducing the remaining water level (essentially emptying the pool). This solves the safety hazard caused by thick sludge forming at the bottom of the pool due to incomplete drainage in existing solutions. In existing solutions, submersible pumps can only start submerged, with the motor not fully above the water surface. This results in a large amount of water remaining in the pumping station pool, creating a high residual sewage level – the so-called shutdown protection level. This makes cleaning and other treatment difficult, leading to the formation of thick sludge at the bottom of the pool. This application solves the problem of the motor not being able to operate above the liquid surface for extended periods by adding an additional cooling channel for the motor, thus ensuring effective drainage. It eliminates the need for a shutdown protection water level for the drainage pump and the water level required for submersion startup, further improving the efficiency of cleaning from the ground using grabbing devices and preventing the formation of silt at the bottom of the pool. Furthermore, this top-to-bottom cooling method allows personnel to control and maintain the cooling structure from the ground, making it very convenient.

[0024] Furthermore, the drainage pump is a canned pump, which is equipped with a magnetic fluid sealing device and an airlock shielding device used in conjunction with the magnetic fluid sealing device.

[0025] In this technical solution, the drainage pump is a canned motor pump, which is equipped with a magnetic fluid sealing device and an airlock shielding device used in conjunction with the magnetic fluid sealing device. Specifically, the canned motor pump includes a motor and a water pump. An air seal is established between the motor and the water pump through the magnetic fluid sealing device and the airlock shielding device to prevent sewage from flowing into the motor and damaging it during drainage. Furthermore, the water pump outlet is connected to a drainage pipe, so that the water pump, driven by the motor, can discharge sewage out of the pumping station pool through the drainage pipe.

[0026] Meanwhile, the drainage pump is a shielded pump with a magnetic fluid sealing device, specifically a magnetic fluid sealed airlock shielded pump. Its specific structure can be found in patent CN202020579246.X, "An Airlock Shielding Device and a Vertical Pump." Because of the magnetic fluid seal, this type of pump eliminates the need for oil seals and oil lubrication during operation. This elimination of oil seals and lubrication reduces temperature rise during operation, significantly lowering the motor's cooling requirements. This allows cooling water supplied through an additional cooling channel to meet the motor's cooling needs. In contrast, existing solutions use oil-sealed motors, which require significant cooling. Therefore, the cooling water supplied through the additional cooling channel cannot meet the needs of oil-sealed motors. Consequently, existing solutions typically use submersible start-up motors without additional cooling channels. Consequently, existing submersible pumps are equipped with a shutdown protection water level, which prevents forced pump shutdown. This type of pump cannot expose the motor, as doing so would burn it out. For submersible sewage pumps, the pump itself is approximately three to four meters high, and with the added safety water level for shutdown, the distance between the motor and the bottom of the tank is typically five to six meters. This means that in existing pumping stations, submersible sewage pumps stop pumping when the water level in the pumping station tank reaches five to six meters, leading to a large amount of sludge settling in the tank. Furthermore, after each pumping operation, the pumping station waits until the accumulated sewage in the tank is roughly near the bottom before pumping again. During this "water storage" process, even more sludge and debris accumulates at the bottom. Over time, very stubborn sludge forms at the bottom of the pumping station tank. Therefore, existing sewage pumping stations pose significant safety hazards during operation. In contrast, this application uses a magnetic fluid sealed airlock shielded pump, which is not afraid of running dry. Therefore, there is no need to design a safety water level for shutdown; during operation, the water can be completely pumped out until the pump stops. This design prevents the formation of thick sediment at the bottom of the pumping station pool after drainage, thus reducing safety hazards. Furthermore, this system allows for proactive ground cleaning after each pumping operation, transforming passive cleaning into active cleaning and significantly reducing pump blockage. In this application, because the pool bottom is emptied each time, debris is collected at the pump inlet, making it easy to retrieve from the ground using a grabbing device. In contrast, existing solutions, while lifting the entire pump, fail to empty the pool bottom, leaving debris floating throughout. This prevents proper ground cleaning because the dispersed, floating contaminants are impossible to collect.In this application, the technology of using a shielded pump and cooling channels to cool the motor allows the bottom of the pool to be evacuated. This allows the sludge to gradually collect at the pump inlet as the water level decreases. Maintenance personnel can then simply insert a grabbing device from the ground into the pump inlet to completely remove the sludge, thus preventing the formation of excessively thick silt at the bottom of the pool. Furthermore, the drainage pump in this type of pumping station has no shutdown protection water level limitation, allowing for raising the pool bottom elevation and saving on investment. It also eliminates the need for fixed hoisting equipment, pump rooms, heating, etc., saving related costs.

[0027] Furthermore, the lifting device also includes: a lifting rod, the upper end of which is installed at the pump pool inlet, and the upper end of the lifting rod is provided with an anti-rotation device and / or a back pressure device; a motor, which is installed at the bottom of the lifting rod and is airtightly connected to the pump cover through a motor bracket, the motor including a motor shaft, the output end of which passes through the pump cover and is inserted into the pump body; and a rotating assembly, which is installed in the pump body and is drivenly connected to the motor shaft.

[0028] In this technical solution, the lift pump with body-cover coupling has a lifting device consisting of a lifting rod, a motor, a pump cover, and an impeller, arranged from top to bottom as a rotating assembly. The lower end of the lifting rod is equipped with the motor, allowing the motor and pump cover to be lifted and pulled out from the ground. Alternatively, the lifting rod can be a lifting rope. The upper end of the lifting rod is fixedly installed at the pump pool inlet and is equipped with an anti-rotation device to prevent the motor, pump cover, and pump body from rotating. A back pressure device can also be installed on the lifting rod. The motor serves as the drive unit, airtightly connected to the pump cover via a motor bracket. The motor also includes a motor shaft, the output end of which passes through a hole in the pump cover and connects to the rotating assembly within the pump body to drive its rotation.

[0029] Furthermore, a cooling channel is provided inside the lifting rod. One end of the cooling channel is connected to an external water source or the drain pipe of a drainage pump, that is, the inlet of the cooling channel is connected to the water source. The other end of the cooling channel is set to the motor of the drainage pump for cooling the motor.

[0030] In this design, the cooling channel and the lifting rod are combined, eliminating the need for additional cooling water pipes and simplifying the overall structure.

[0031] Furthermore, a distribution plate is installed on the top of the motor. The distribution plate is used to receive water delivered from the cooling channel. The distribution plate is equipped with multiple distribution holes, which can disperse the water on the distribution plate to the motor to cool it.

[0032] In this technical solution, a distribution plate is installed on the top of the motor. The distribution plate can be part of the motor or part of the lifting rod. Water entering the cooling channel flows along the channel to the distribution plate, and then acts on the motor through multiple diversion holes on the distribution plate, thus achieving motor cooling. Furthermore, the edge of the distribution plate is located inside the motor, meaning the area of ​​the distribution plate is smaller than the cross-sectional area of ​​the motor. This design, through the distribution plate, diverts the cooling water, thereby improving the cooling effect and ensuring the non-submerged start-up of the motor.

[0033] Furthermore, the inlet of the cooling channel is connected to an external water source or the drain pipe of a drainage pump. A switch device is installed on the cooling channel, which can automatically open or close according to the status of the pump station without hidden dangers. When the inlet of the cooling channel is connected to the drain pipe of the drainage pump, a sewage treatment device is also installed between the switch device and the drain pipe.

[0034] In this technical solution, the cooling water can come from an externally provided water source. However, it is preferred that the cooling water comes from the water discharged by the drainage pump, meaning the inlet of the cooling channel is preferentially connected to the drainage pipe of the drainage pump. Simultaneously, a switching device can be installed on the cooling channel to connect or disconnect the cooling channel from the drainage pipe or external water source. Furthermore, this switching device can be connected to a liquid level detection device, allowing it to automatically open and close based on the status of the drainage pump and the liquid level in the pump station pool. Furthermore, when using water discharged from the drainage pipe to cool the motor, a wastewater treatment device can be installed between the drainage pipe and the switching device to treat the water in the drainage pipe before it is delivered to the cooling channel to cool the motor. This wastewater treatment device may only include a filtration device, allowing the discharged wastewater to be used for motor cooling after simple filtration. Of course, the wastewater treatment device can also be supplemented with other treatment functions as needed.

[0035] In any of the above technical solutions, the hazard-free pumping station further includes: a grabbing device, the bottom of which is provided with at least one grabbing hook. After the lifting device is pulled out to the pumping station pool, the grabbing device can be inserted from the pump pool opening and extended to the pump suction inlet of the drainage pump, and can grab the dirt at the pump suction inlet through the grabbing hook.

[0036] In this technical solution, the hazard-free pumping station also includes a grabbing device. The bottom of the grabbing device is equipped with at least one grabbing hook for grabbing debris at the pump inlet. Specifically, when large debris adheres to the inlet of the drainage pump, maintenance personnel can open the pump pool opening (such as the pool wall, pit, or hole), remove the lifting device (including the pump cover), insert the grabbing device into the pump from the pool opening, and extend it to the pump inlet. This allows the grabbing hook to remove the debris from the drainage pump inlet. The hazard-free pumping station provided by this invention is equipped with a grabbing device matched to the drainage pump. When large debris adheres to the drainage pump inlet, the pumping station pool can be opened directly, the lifting device (including the pump cover) can be lifted and removed, and the debris at the drainage pump inlet can then be removed using the grabbing device. Pump maintenance can be performed without personnel needing to descend to the bottom of the sewage pool, ensuring the safety of maintenance personnel.

[0037] In the above technical solution, the gripping device includes a rotatable rotating component, and at least one gripping hook is provided at the bottom of the rotating component.

[0038] In this technical solution, the gripping device includes a rotatable rotating component, and at least one gripping hook is provided at the bottom of the rotating component. Thus, when it is necessary to grip debris from the drainage pump inlet, the rotating component can drive the gripping hook to extend from the pump tank opening into the drainage pump inlet to clean the debris. Furthermore, there are two to four gripping hooks.

[0039] Furthermore, the rotating component is a steel wire rope. Even further, the rotating component is a steel wire rope rotatably mounted within an outer sleeve.

[0040] In the above technical solution, the gripping device also includes an electric drive device for driving the rotating part to rotate, or the gripping device also includes a manual device for driving the rotating part to rotate.

[0041] In this technical solution, the gripping device also includes a drive unit for rotating the rotating component. This drive unit can be electrically driven, so that when it is necessary to clean the surface of the drain pump inlet, simply turning on the electric drive unit will drive the rotating component to rotate the gripping hook, thus cleaning the drain pump inlet. Alternatively, the drive unit can be manually driven, allowing maintenance personnel to manually control the rotation of the rotating component to clean the drain pump inlet in the event of a power outage.

[0042] Furthermore, the gripping device also includes an outer sleeve fitted over the rotating component, which can rotate within the outer sleeve.

[0043] In this technical solution, the gripping device also includes an outer sleeve to protect the rotating parts. Simultaneously, the outer sleeve increases the weight and rigidity of the rotating parts, allowing for easier insertion of the rotating parts and gripping hooks into the pump body, preventing the steel wire rope and other rotating parts from snagging on other objects in the pump station pool. Furthermore, the outer sleeve facilitates the installation of a collection bag on the outside of the gripping device, thus simplifying the collection and disposal of waste gripped by the device.

[0044] In the above technical solution, the hazard-free pump station also includes: a second collection bag, the open end of which is used to be installed at the pump pool inlet, and the bottom of which is fitted over the gripping device to wrap the sewage grabbed by the gripping device.

[0045] In this technical solution, the hazard-free pumping station also includes a second collection bag. The open end of the second collection bag is installed facing upwards at the pump pool inlet, and the bottom of the second collection bag is fitted over the outer sleeve of the grabbing device. This allows the second collection bag to fold downwards and wrap around the waste collected by the grabbing device when the grabbing hook picks up the waste from the drainage pump's suction inlet. Specifically, when cleaning is required, the pump pool inlet can be opened first, the pump cover and lifting device removed, and the open end of the second collection bag installed at the pump pool inlet, with the bottom of the second collection bag fitted over the grabbing device (e.g., over the outer sleeve). When the grabbing device lifts up the contaminants, the second collection bag can be used directly to collect them. Throughout the process, maintenance personnel will not come into contact with the waste, and wastewater will not be exposed to the sun, thus ensuring the cleanliness and hygiene of the cleaning process and improving the working environment for cleaning and maintenance personnel.

[0046] It is understandable that the grabbing device itself is a lifting device that can be lifted and extracted from outside the pump pool to outside the pump station pool. Therefore, the scope of protection in this application also includes the solution of setting up a collection bag only for the grabbing device to collect the waste grabbed by the grabbing device.

[0047] Among them, the "no hidden danger pump station" refers to an integrated pump station. Of course, a "no hidden danger pump station" can also be a regular, non-integrated pump station.

[0048] In the above technical solution, the drainage pump is a self-priming pump.

[0049] In this technical solution, the drainage pump is a self-priming pump. By replacing the conventional non-self-priming pump with a self-priming pump, there is no need to install a separate pump priming device, simplifying the overall assembly of the pumping station.

[0050] In another technical solution, the motor of the drainage pump is an amphibious motor, which can be started submerged or not.

[0051] In this technical solution, the pump motor is an amphibious motor, capable of both submerged and non-submerged starting. This allows the pump to operate stably even when above the water surface, unlike traditional submersible pumps, overcoming the limitation of existing pumps that only operate at high water levels. Furthermore, because the pump operates stably even at low water levels, it can completely drain the water from the pumping station pool, improving drainage efficiency.

[0052] In the above technical solution, the drainage pump also includes a drainage pipe, which is sealed to the pump outlet of the drainage pump. The drainage pipe includes a hose, the inlet of which is sealed to the pump outlet. The hose is a hose with fabric. When the pressure inside the hose is less than the pressure outside the hose, at least part of the inner wall of the hose can be tightly pressed together to form a static seal under the pressure outside the hose.

[0053] In this technical solution, the drainage pump also includes a drainage pipe, which is sealed to the outlet of the drainage pump. Further, the drainage pipe includes a flexible hose, the inlet of which is sealed to the outlet of the pump. The hose is a fabric-lined hose. When the pressure inside the hose is less than the pressure outside, at least a portion of the inner wall of the hose can tightly adhere to each other under the external pressure to form a static seal. Because the hose in this application is a fabric-lined hose, it can tightly adhere to each other under the external pressure to form a static seal. This ensures that after the drainage pump discharges sewage, the air pressure inside the hose is less than the air pressure outside, allowing the inner walls of the hose to adhere to each other, preventing sewage from flowing back into the drainage pump and affecting its service life. This type of drainage pump has good airtightness, with no internal or external leakage, ensuring both vacuum negative pressure start-up and no medium backflow after shutdown.

[0054] In the above technical solution, one or more of the following are provided at the pump inlet: a filter device, a crushing device, a shearing device, and a basket filter screen.

[0055] In this technical solution, one or more of the following are installed at the pump inlet: a filter, a crushing device, a shearing device, and a basket filter screen. This allows for further filtration, crushing larger debris flowing into the drainage pump and extending its service life. Specifically, general debris is sheared and discharged upon entering the pump chamber. When larger debris clogs the suction inlet, a debris-removing and grabbing device can be used to remove the blockage and collect it environmentally.

[0056] In this application, the material of the first and second storage bags can be customized as needed. However, their structure is preferably similar to a sleeve, making it easier to secure the bottom of the first and second storage bags to the lifting and gripping devices. Furthermore, to improve the secure connection between the first and second storage bags and the lifting and gripping devices, a limiting structure can be provided on the lifting and gripping devices to prevent slippage.

[0057] Additional aspects and advantages of the invention will become apparent in the following description or may be learned by practice of the invention. Attached Figure Description

[0058] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0059] Figure 1 This is a schematic diagram of the structure of a pumping station without hidden dangers, which provides a lifting device for the drainage pump and inserts a grabbing device to grab the sewage.

[0060] Figure 2 yes Figure 1 A magnified schematic diagram of the partial structure at point A in the middle;

[0061] Figure 3 This is a schematic diagram of the structure of the hazard-free pumping station provided in an embodiment of the present invention, which lifts and grabs up the sewage.

[0062] Figure 4 This is a schematic diagram of the structure of the hidden danger-free pumping station provided in the embodiment of the present invention when the captured sewage is wrapped in the second collection bag in reverse.

[0063] Figure 5 This is a schematic diagram of the structure of the lifting device for the drainage pump provided in an embodiment of the present invention;

[0064] Figure 6 This is a schematic diagram of the structure of a drainage pump lifting device provided in another embodiment of the present invention.

[0065] Figures 1 to 6 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0066] 1. Pump station pool, 12. Pool wall, 14. Pool base, 142. Water collection tank, 16. Pool cover, 2. Grabbing device, 22. Rotating component, 24. Grabbing hook, 26. Drive device, 28. Outer sleeve, 3. Second collection bag, 4. Sludge, 5. Lifting device, 50. Diverter plate, 52. Motor, 54. Rotating assembly, 56. Lifting rod, 562. Cooling channel, 58. Anti-rotation device, 6. Pump suction pipe. Detailed Implementation

[0067] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0068] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the scope of protection of the invention is not limited to the specific embodiments disclosed below.

[0069] The following reference Figures 1 to 6 This describes a safe and reliable pumping station provided according to an embodiment of the present invention.

[0070] like Figures 1 to 6 As shown, this invention provides a hidden danger-free pumping station with a drainage pump for installation below the pump pool inlet. The drainage pump includes a pump body and a lifting device 5. The pump body is installed inside the pumping station pool 1. The lifting device 5 includes a pump cover, which can be separated or coupled to the pump body via an automatic coupling device. The automatic coupling device can separate and couple the pump cover from the pump body above the pump pool inlet. When the pump cover is separated from the pump body, the lifting device 5 can be lifted and pulled out of the pump pool inlet to the outside of the pumping station pool 1. A pump suction pipe 6 is provided at the bottom of the pump body, and a pump suction inlet is provided at the bottom of the pump suction pipe 6. After the lifting device 5 is pulled out to the pumping station pool 1 (… Figures 1 to 4 (This is the state after the lifting device 5 is pulled out). The grabbing device 2 can be inserted from the pump pool inlet, pass through the pump suction inlet, and extend into the pump station pool 1 to grab the dirt at the pump suction inlet.

[0071] The hazard-free pumping station provided according to an embodiment of the present invention includes a drainage pump, which is installed below the pump pool inlet. The pump pool inlet can be the wellhead of an integrated pumping station, or the inlet of other wells, pits, holes, etc., that require the use of a drainage pump. The drainage pump is used to remove sewage from wells, pits, holes, etc. The drainage pump is a lift pump with a coupled pump cover and pump body. After this type of drainage pump is installed in the pumping station pool 1, it can lift the pump cover, motor 52, and rotating assembly 54, etc., as a whole above the pump pool inlet, i.e., on the ground, thereby enabling the removal of the pump cover, motor 52, and rotating assembly 54, etc., above the ground. This configuration, by detachably connecting the pump cover and pump body via an automatic coupling device, allows for rapid disassembly of the pump cover and pump body outside the pump station pool 1 (above the pump pool inlet, i.e., on the ground), facilitating quick sludge removal without requiring factory repairs. This enables the pump body to be opened on-site, allowing the removal of the pump's lifting device 5, thus paving the way for subsequent cleaning using the grabbing device 2 and other methods. Furthermore, in this application, no filter screen is installed at the pump inlet when the pump is installed to form the pump station; the pump inlet is completely open. Therefore, when the pump's lifting device 5 is lifted and removed, external dredging devices can be inserted from the ground into the pump body and then extend through the pump inlet into the pump station pool 1 to grab and clean the debris at the pump inlet. Specifically, after a period of use, this type of pump station allows the lifting device 5, consisting of the pump cover, motor 52, and rotating assembly 54, to be raised. Then, the pump inlet is actively cleaned and dredged using a grabbing device 2 (which can be a pre-installed dedicated device or a hook-like structure found by maintenance personnel) to prevent blockage due to prolonged neglect. In cases where large amounts of debris adhere to the pump inlet during operation, the pump pool opening can be opened directly, and the lifting device 5, including the pump cover, can be removed. The debris 4 at the pump inlet can then be cleared using the grabbing device 2. This design allows for pump maintenance without personnel needing to descend to the bottom of the sewage pool, improving the working environment for maintenance personnel. Furthermore, the pump pool 1 is constantly sealed, inevitably containing toxic and harmful gases such as carbon monoxide and chlorine. Therefore, personnel descending to the bottom of the pool are prone to poisoning and other safety incidents. This application utilizes ground-level cleaning, eliminating the need for personnel to descend to the bottom of the sewage tank, thus completely resolving the safety issues associated with maintenance personnel entering the tank bottom. Furthermore, this method makes pump station cleaning easier to perform, allowing for multiple cleaning operations in advance. This transforms passive cleaning, which is often necessary due to blockages, into proactive cleaning, thereby completely resolving the problem of frequent blockages and significantly reducing potential hazards, ultimately achieving a degree of hazard-free pump station operation.

[0072] In existing solutions, the drainage pumps in the pumping station are not body-cap coupled lift pumps. Therefore, the motor 52, rotor, etc., cannot be lifted separately from the ground. This is why the entire pump must be lifted up for cleaning in existing solutions. Furthermore, existing solutions have filters installed at the pump inlet. The presence of these filters prevents the gripping device 2 from being extended from the ground outside the pump pool, thus preventing cleaning of the existing pumping station from the ground. In this application, the combination of body-cap coupled lift pumps and the elimination of filters at the pump inlet allows for cleaning of the pumping station entirely from the ground, without the need to lift the entire drainage pump up or for maintenance personnel to descend into the pumping station pool 1.

[0073] Furthermore, to improve the ease of cleaning, the drainage pump can be configured as a special pump capable of completely draining the water from the bottom of the pool, i.e., a pump that does not require a start-up water level or a safety water level. This exposes the pump inlet after the water is drained, facilitating the removal of debris from the pump inlet using the grabbing device 2 on the ground. In contrast, existing pumps generally require a start-up water level and a shutdown protection water level, making it impossible to completely drain the water. Therefore, debris is dispersed in the remaining water and does not easily accumulate at the pump inlet. This is another reason why existing pumping stations do not consider cleaning from the ground. Of course, in practice, it is also possible to set the pump as a regular submersible sewage pump. In this case, after the lifting device 5 of the drainage pump is lifted, the grabbing device 2 can also be extended from the pump inlet to grab the sewage. However, the maintenance personnel on the ground cannot see the bottom of the pool, which will result in a relatively low cleaning efficiency. Of course, in this scheme, the concentration of sewage is low, which will also result in a relatively low cleaning efficiency. However, this scheme itself is feasible and falls within the protection scope of this application.

[0074] In the above embodiments, such as Figure 2 As shown, the pump station without hidden dangers also includes: a water collection tank 142, which is set at the bottom of the pump station pool, and the pump inlet is located in the water collection tank 142.

[0075] In this embodiment, a water collection trough 142 is provided at the bottom of the pump station pool 1. This allows dirt and other contaminants to be collected in the water collection trough 142. Especially when the drainage pump is a pump that does not have a pre-reserved start-up water level and a shutdown protection water level, the water collection trough 142 can concentrate the pollutants in the water collection trough 142, which can greatly improve the efficiency of maintenance personnel in cleaning the dirt on the ground using the grabbing device 2, etc.

[0076] The water collection trough 142 is trapezoidal, but other shapes are also acceptable. The insertion depth of the pump suction pipe 6 into the water collection trough 142 can be set as needed, and the width and diameter of the water collection trough 142 can also be set according to actual requirements. Ideally, the depth, width, and diameter should be designed to allow the bottom of the pool to be emptied, with the top of the water collection trough 142 just exposed.

[0077] In the above embodiments, the hazard-free pumping station includes a lifting device 5, a grabbing device 2, and other extraction devices, as well as a collection bag. These extraction devices can be assemblies composed of the pump cover, motor 52, and rotating assembly 54 in a body-cover coupled lifting pump, or they can be shearing devices installed at the inlet of the integrated pumping station. Of course, the lifting device 5 and grabbing device 2 can also be any component that can be lifted and extracted above the pump pool inlet, i.e., on the ground (such as an externally configured grabbing device 2 for clearing the suction inlet of the drainage pump). Since these components are used in the pumping station pool 1, they carry a certain amount of sewage or waste when lifted up. This application addresses this type of extraction device by pre-installing a collection bag at the pump pool inlet. Specifically, the open end of the collection bag is installed at the pump pool inlet, which can be the wellhead of the integrated pumping station, or the entrance to other wells, pits, or holes that require the use of a drainage pump. The bottom of the storage bag is fitted onto the lifting device 5, gripping device 2, and other extraction devices. This allows maintenance personnel to fold the storage bag downwards and cover the portion of the extraction devices located below the bottom of the bag when lifting them upwards to remove them. The length of the storage bag should be determined based on the length of the area to be covered; that is, the distance from the bottom of the storage bag to the bottom of the lifting device 5, gripping device 2, and other extraction devices should be less than the length of the storage bag itself, so that the bag can fold downwards and cover the lower part of the extraction devices. This design involves covering the lifting device 5, gripping device 2, and other extraction devices with a storage bag. When disassembling these devices, the bag can be folded down to completely cover them, preventing maintenance personnel from coming into contact with wastewater and debris. This ensures the health of maintenance personnel throughout the operation. Furthermore, this design prevents direct contact between maintenance personnel and the wastewater and debris from the lifting device 5, gripping device 2, and other extraction devices, thus preventing the spread of viruses, bacteria, and other harmful substances from the wastewater and debris. This significantly reduces the risk of serious safety accidents caused by dredging and maintenance issues.

[0078] The lifting device 5, gripping device 2, and other extraction devices wrapped in the storage bag can be specially treated according to standards later if necessary. The storage bag can also be treated according to relevant requirements. Of course, depending on actual needs, special treatment may not be necessary if it is ensured that the lifting device 5, gripping device 2, and other extraction devices are safe. In particular, when the lifting device 5, gripping device 2, and other extraction devices are part of a liftable assembly consisting of a pump cover, motor 52, and rotating assembly 54 in a body-cover coupled lifting pump, they can be simply treated and reinstalled into the pump station pool 1 after cleaning.

[0079] The number of storage bags can be set according to the number of extraction devices that need to be raised. Generally, the number of storage bags corresponds one-to-one with the number of extraction devices that need to be raised.

[0080] In one specific embodiment, the extraction device includes a lifting device 5 (such as...). Figure 5 and Figure 6As shown in the figure, the collection bag includes a first collection bag (not shown) adapted to the lifting device 5. That is, the above-mentioned extraction device includes the lifting device 5, and the first collection bag is installed for the lifting device 5. In this configuration, the first collection bag is pre-installed for the lifting device 5, which consists of the pump cover, motor 52, and rotating assembly 54, etc. The open end of the first collection bag is sealed at the pump pool inlet, and the bottom of the first collection bag is fixed and fitted onto the outside of the lifting device 5 (mainly the outside of the lifting rod 56). That is, the lower end of the lifting device 5 passes through the bottom of the first collection bag and is fixed into the pump pool. In other words, the entire first collection bag is fitted onto the upper part of the lifting device 5. When lifting the lifting device 5 upwards to remove it, the first collection bag can be folded back and wrapped around the lower part of the lifting device 5 to prevent sewage on the lifting device 5 from polluting the ground, soiling maintenance personnel, or releasing toxic gases, thereby improving the working environment of maintenance personnel and ensuring the safety of pump station cleaning. In this design, the first storage bag is primarily used to wrap the motor 52 and the rotating assembly 54 connecting the pump cover and the motor 52. After the pump station has been in use for a period of time, this structure allows the lifting device 5, consisting of the pump cover, motor 52, and rotating assembly 54, to be lifted up. Then, the grabbing device 2 can be used to actively clean and unclog the pump inlet, preventing blockages caused by prolonged neglect. Furthermore, when large amounts of debris adhere to the pump inlet during operation, the pump tank opening can be opened directly, and the lifting device 5, including the pump cover, can be lifted and removed. The grabbing device 2 can then remove the debris from the pump inlet. This design allows for pump maintenance without personnel needing to descend to the bottom of the sewage tank, ensuring the safety of maintenance personnel. Simultaneously, this method facilitates pump station cleaning, enabling multiple cleaning operations in advance. This transforms passive cleaning due to blockages into proactive cleaning, effectively resolving the problem of frequent blockages and significantly reducing potential hazards, thus achieving a degree of hazard-free pump station operation.

[0081] In any of the above embodiments, such as Figure 6 As shown, the no-hazard pumping station also includes a cooling channel 562. One end of the cooling channel 562 is connected to an external water source or the drain pipe of the drainage pump, meaning the inlet of the cooling channel 562 is connected to a water source. The other end of the cooling channel 562 is positioned to cool the motor 52 of the drainage pump. In other words, the water discharged from the other end of the cooling channel 562 can act on the motor to cool the motor 52 of the drainage pump. The cooling water can flow along... Figure 6 The arrow in the image flows to the motor to cool the electrodes.

[0082] In this embodiment, water entering the cooling channel 562 can act on the motor 52 along the cooling channel 562, thereby cooling the motor 52. With this configuration, when the drainage pump is submerged and started, the inlet of the cooling channel 562 can be closed, allowing the motor 52 to be cooled by the water in the pumping station pool 1. When the motor 52 of the drainage pump exceeds the preset liquid level, water can be supplied to the cooling channel 562, allowing the motor 52 to be cooled by the water output from the cooling channel 562. This configuration allows the motor 52 to start both submerged and above the water surface, thus enabling more thorough drainage of the water in the pumping station pool 1, resulting in a lower remaining water level (essentially emptying the water). In existing solutions, submersible pumps can only start submerged, and their motors 52 cannot be fully exposed above the liquid surface. This results in a larger amount of water remaining in the pumping station pool 1, meaning the remaining sewage still has a high water level, the so-called shutdown protection water level. Therefore, this is very inconvenient for cleaning and other treatment processes. This application solves the problem that the motor 52 cannot be exposed above the liquid surface for long-term operation by setting an additional cooling channel 562 for the motor 52, thereby ensuring the drainage effect and eliminating the water level required for the shutdown protection of the drainage pump and the water level required for submersion start-up, thereby further improving the efficiency of cleaning on the ground by means of the gripping device 2, etc.

[0083] Furthermore, such as Figure 6 As shown, the lifting device 5 also includes: a lifting rod 56, the upper end of which is installed at the pump pool inlet, and the upper end of the lifting rod 56 is provided with an anti-rotation device 58 and / or a back pressure device; a motor 52, which is installed at the bottom of the lifting rod 56 and is airtightly connected to the pump cover through a motor 52 bracket, the motor 52 including a motor shaft, the output end of which passes through the pump cover and is inserted into the pump body; and a rotating assembly 54, which is installed in the pump body and is drivenly connected to the motor shaft.

[0084] In this embodiment, the lifting pump with body-cover coupling has a lifting device 5 that, from top to bottom, comprises a lifting rod 56, a motor 52, a pump cover, and an impeller, forming a rotating assembly 54. The lower end of the lifting rod 56 is fitted with the motor 52, allowing the motor 52 and pump cover to be lifted and pulled out from the ground. Alternatively, the lifting rod 56 can be a lifting rope. The upper end of the lifting rod 56 is fixedly installed at the pump pool inlet and is equipped with an anti-rotation device 58 to prevent the motor 52, pump cover, and pump body from rotating. A back pressure device can also be installed on the lifting rod 56. The motor 52 is a drive device 26, airtightly connected to the pump cover via a motor 52 bracket. The motor 52 also includes a motor shaft, the output end of which passes through a hole in the pump cover and connects to the rotating assembly 54 within the pump body to drive the rotating assembly 54 to rotate.

[0085] Furthermore, such as Figure 6As shown, a cooling channel 562 is provided inside the lifting rod 56. One end of the cooling channel 562 is connected to an external water source or the drain pipe of a drainage pump, that is, the inlet of the cooling channel 562 is connected to the water source. The other end of the cooling channel 562 is set to the motor 52 of the drainage pump for cooling the motor 52.

[0086] In this scheme, such as Figure 6 As shown, the cooling channel 562 and the lifting rod 56 are set together, so that there is no need to set up an additional cooling water pipe, thus simplifying the overall structure.

[0087] Furthermore, such as Figure 6 As shown, a diversion plate 50 is provided on the top of the motor 52. The diversion plate 50 is used to receive water delivered from the cooling channel 562. The diversion plate 50 is provided with multiple diversion holes, which can disperse the water on the diversion plate 50 to the motor 52 to cool the motor 52.

[0088] In this embodiment, a diversion plate 50 is provided on the top of the motor 52. The diversion plate 50 can be part of the motor 52 or part of the lifting rod 56. Water entering the cooling channel 562 flows into the diversion plate 50 and then acts on the motor 52 through multiple diversion holes on the diversion plate 50, thereby achieving cooling of the motor 52. Furthermore, the edge of the diversion plate 50 is located inside the motor 52, that is, the area of ​​the diversion plate 50 is smaller than the cross-sectional area of ​​the motor 52. This arrangement allows the cooling water to be diverted through the diversion plate 50, thereby improving the cooling effect of the cooling water and ensuring the non-submerged start-up of the motor 52.

[0089] Furthermore, the inlet of the cooling channel 562 is connected to an external water source or the drain pipe of a drainage pump. A switch device is installed on the cooling channel 562, which can automatically open or close according to the status of the pump station without hidden dangers. When the inlet of the cooling channel 562 is connected to the drain pipe of the drainage pump, a sewage treatment device is also installed between the switch device and the drain pipe.

[0090] In this embodiment, the cooling water can originate from an externally provided water source. However, it is preferred that the cooling water originates from the water discharged by the drainage pump, meaning the inlet of the cooling channel 562 is preferentially connected to the drainage pipe of the drainage pump. Simultaneously, a switching device can be installed on the cooling channel 562 to connect or disconnect the cooling channel 562 from the drainage pipe or the external water source. Furthermore, this switching device can be connected to a liquid level detection device, enabling it to automatically open and close based on the status of the drainage pump and the liquid level in the pump station pool 1. Furthermore, when using water discharged from the drainage pipe to cool the motor 52, a wastewater treatment device can be installed between the drainage pipe and the switching device to treat the water in the drainage pipe before it is delivered to the cooling channel 562 to cool the motor 52. This wastewater treatment device may only include a filtration device, allowing the discharged wastewater to be used for cooling the motor 52 after simple filtration. Of course, the wastewater treatment device can also be supplemented with other treatment functions as needed.

[0091] In any of the above embodiments, such as Figure 1 , Figure 3 and Figure 4 As shown, the pump station without hidden dangers also includes: a grabbing device 2, the bottom of which is provided with at least one grabbing hook 24. After the lifting device 5 is pulled out to the pump station pool 1, the grabbing device 2 can be inserted from the pump pool opening and extended to the pump suction inlet of the drainage pump, and can grab the dirt 4 at the pump suction inlet through the grabbing hook 24.

[0092] In this embodiment, the hazard-free pumping station also includes a grabbing device 2. The bottom of the grabbing device 2 is equipped with at least one grabbing hook 24 for grabbing debris 4 at the pump inlet. Specifically, when large debris 4 adheres to the inlet of the drainage pump, maintenance personnel can open the pump pool opening (such as the pool wall 12, pit, or hole), remove the lifting device 5 (including the pump cover), and insert the grabbing device 2 from the pump pool opening into the pump, extending it to the pump inlet of the drainage pump. This allows the grabbing hook 24 to remove the debris 4 from the drainage pump inlet. The hazard-free pumping station provided by this invention includes a grabbing device 2 matched to the drainage pump. When large debris 4 adheres to the drainage pump inlet, the pumping station pool 1 can be opened directly, and the lifting device 5 (including the pump cover) can be lifted and removed. The debris 4 can then be removed from the drainage pump inlet using the grabbing device 2. This allows for pump maintenance without personnel needing to descend to the bottom of the sewage pool, ensuring the safety of maintenance personnel.

[0093] In the above embodiments, such as Figure 2As shown, the gripping device 2 includes a rotatable rotating part 22, and at least one gripping hook 24 is provided at the bottom of the rotating part 22. Thus, when it is necessary to grip debris from the drainage pump inlet, the rotating part 22 can drive the gripping hook 24 to extend from the pump pool opening into the drainage pump inlet to clean the debris. Furthermore, there are two to four gripping hooks 24.

[0094] Furthermore, such as Figure 2 As shown, the rotating component 22 is a steel wire rope. Furthermore, the rotating component 22 is a steel wire rope rotatably mounted within the outer sleeve 28.

[0095] In the above embodiment, the gripping device 2 further includes a drive device 26 for driving the rotating member 22 to rotate. The drive device 26 can be an electrically driven device, so that when it is necessary to clean the dirt from the surface of the drain pump inlet, simply turning on the switch of the electric drive device 26 will drive the rotating member 22 to rotate the gripping hook 24 to clean the dirt from the drain pump inlet. Alternatively, the drive device 26 can also be a manually driven device, so that in the event of a power outage, maintenance personnel can manually control the rotation of the rotating member 22 to clean the dirt from the drain pump inlet.

[0096] Furthermore, such as Figure 2 As shown, the gripping device 2 also includes an outer sleeve 28 fitted outside the rotating member 22, and the rotating member 22 can rotate inside the outer sleeve 28.

[0097] In this embodiment, the gripping device 2 also includes an outer sleeve 28 to protect the rotating component 22. Simultaneously, the outer sleeve 28 increases the weight and rigidity of the rotating component 22, making it easier to insert the rotating component 22 and the gripping hook 24 into the pump body and preventing the steel wire rope or other rotating components 22 from snagging on other objects within the pump station pool 1. Furthermore, the outer sleeve 28 facilitates the installation of a collection bag on the outside of the gripping device 2, thereby simplifying the collection and treatment of waste gripped by the gripping device 2.

[0098] In the above embodiments, such as Figure 1 , Figure 3 and Figure 4 As shown, the no-hazard pump station also includes: a second collection bag 3, the open end of the second collection bag 3 is used to be installed at the pump pool inlet, and the bottom of the second collection bag 3 is fitted and installed outside the grabbing device 2 to wrap the dirt 4 grabbed by the grabbing device 2.

[0099] In this embodiment, the hazard-free pump station also includes a second collection bag 3. The open end of the second collection bag 3 is installed facing upwards at the pump pool inlet. The bottom of the second collection bag 3 is fitted over the outer sleeve 28 of the gripping device 2. This allows the second collection bag 3 to fold downwards and wrap around the dirt 4 grabbed by the gripping device 2 when the gripping hook 24 grabs and removes the dirt 4 from the drainage pump inlet. Specifically, when cleaning is required, the pump pool inlet can be opened first, the pump cover and lifting device 5 removed, and the open end of the second collection bag 3 installed at the pump pool inlet, with the bottom of the second collection bag 3 fitted over the gripping device 2 (e.g., outside the outer sleeve 28). When the gripping device 2 lifts up the contaminants, the second collection bag 3 can be used directly to collect them. Throughout the process, maintenance personnel will not come into contact with the dirt 4, and the wastewater on the dirt 4 will not be exposed to the sun, thus ensuring the cleanliness and hygiene of the cleaning process and improving the working environment for cleaning and maintenance personnel.

[0100] It is understandable that the grabbing device 2 here is also a lifting device 5 that can be lifted and extracted from outside the pump pool to outside the pump station pool 1. Therefore, the scope of protection in this application also includes the solution of setting up a collection bag only for the grabbing device 2 to collect the sewage grabbed by the grabbing device 2.

[0101] Among them, the "no hidden danger pump station" refers to an integrated pump station. Of course, a "no hidden danger pump station" can also be a regular, non-integrated pump station.

[0102] In the above embodiment, the drainage pump is a self-priming pump. By replacing the conventional non-self-priming pump with a self-priming pump, there is no need to install a separate pump priming device, simplifying the overall assembly of the pumping station.

[0103] In another embodiment, the motor 52 of the drainage pump is an amphibious motor, capable of both submerged and non-submerged starting. This allows the drainage pump of this application to operate stably even when above the water surface, unlike traditional submersible pumps, overcoming the limitation of existing technologies that only operate at high water levels and cannot operate at low water levels. Furthermore, because the drainage pump of this application can operate stably even at low water levels, it can completely drain the water from the pumping station pool 1, improving drainage efficiency.

[0104] In the above embodiment, the drainage pump is a canned motor pump, which is equipped with a magnetic fluid sealing device and an airlock shielding device used in conjunction with the magnetic fluid sealing device. Specifically, the canned motor pump includes a motor 52 and a water pump. An air seal is formed between the motor 52 and the water pump through the magnetic fluid sealing device and the airlock shielding device to prevent sewage from flowing into the motor 52 and damaging the motor 52 during drainage. Furthermore, the water pump outlet is connected to a drainage pipe, so that the water pump can discharge sewage out of the pumping station pool 1 through the drainage pipe under the drive of the motor 52.

[0105] Meanwhile, the drainage pump is a shielded pump with a magnetohydrodynamic (MHD) seal, eliminating the need for oil seals and other structures during operation, thus further reducing the cooling requirements of the motor 52. This allows the cooling water supplied through the additional cooling channel 562 to meet the motor 52's cooling needs. In contrast, existing solutions use oil-sealed motors, which require significantly more cooling. Therefore, the cooling water supplied through the additional cooling channel 562 is insufficient for oil-sealed motors, which is why existing solutions require submerged start-up motors instead of using a separate cooling channel 562 for additional cooling. Furthermore, the drainage pump's MHD seal allows it to run dry without interruption, enabling complete pumping until the pump stops. Existing solutions cannot run dry, necessitating a shutdown protection water level. The starting water level is also higher, which is why existing solutions cannot pump water from the bottom of the pool.

[0106] Furthermore, since the drainage pump in this application does not require a shut-off water level, the bottom of the pool can be completely pumped out, which is impossible with existing pumping stations. This design allows for proactive ground cleaning after each pumping operation, transforming the passive cleaning method of the pumping station into active cleaning, thus significantly reducing the risk of pump blockage. Simultaneously, because the bottom of the pool can be emptied each time, debris can be collected at the pump inlet, allowing it to be retrieved from the ground using the grabbing device 2, thereby completing the cleaning process. In contrast, while existing solutions can lift the entire pump, they cannot completely empty the pool bottom. Therefore, debris remains floating throughout the pool and cannot be completely collected. Consequently, even after lifting the entire pump, existing solutions cannot effectively clean the surface because the pollutants are dispersed and floating in the pool, making retrieval impossible. In this application, the technology of using a shielded pump and cooling channel 562 to cool the motor 52 can evacuate the bottom of the pool, so that the dirt can be collected at the pump inlet as the water gradually decreases. In this way, maintenance personnel only need to extend the grabbing device 2 into the pump inlet from the ground to completely clean up the dirt.

[0107] In the above embodiments, the drainage pump further includes a drainage pipe, which is sealed to the pump outlet of the drainage pump. The drainage pipe includes a flexible hose, the inlet of which is sealed to the pump outlet. The flexible hose is a fabric-lined hose. When the pressure inside the hose is less than the pressure outside the hose, at least a portion of the inner wall of the hose can tightly adhere to each other and form a static seal under the pressure outside the hose. Because the flexible hose of this application is a fabric-lined hose, it can tightly adhere to each other and form a static seal under the pressure outside the hose. This ensures that after the drainage pump of this application discharges sewage, the air pressure inside the hose is less than the air pressure outside the hose, allowing the inner walls of the hose to adhere to each other, preventing the discharged sewage from flowing back into the drainage pump and affecting the service life of the drainage pump.

[0108] In the above embodiments, one or more of the following are provided at the pump inlet: a filter, a pulverizing device, a shearing device, and a basket filter screen. This allows for further filtration, pulverizing larger debris flowing into the drainage pump and extending its service life.

[0109] In the above embodiments, the no-hazard pumping station also includes a monitoring system capable of acquiring the usage status of the drainage pump or the no-hazard pumping station itself, and providing cleaning prompts based on this status. When the drainage pump needs cleaning or the no-hazard pumping station needs to discharge water, maintenance personnel can use the gripping device 2 to clean the drainage pump or control the pump to discharge wastewater, based on the prompts. This setup allows for monitoring and prompting regarding the status of the no-hazard pumping station, enabling pre-clogging cleaning before blockages occur, thus reducing the probability of blockages.

[0110] Specifically, the monitoring system is equipped with a communication interface, and the human-machine interface enables intelligent remote monitoring. It monitors the liquid level, temperature, humidity, unit operating status, multi-functional shielded valves, pump protection signals, automatic turbine operation, high and low liquid level alarms, current monitoring, and power supply protection for the motors within the pumping station pool.

[0111] In the above embodiments, the no-hazard pumping station further includes: a detection system for detecting the parameters of the no-hazard pumping station; and a monitoring system connected to the detection system, which can issue an alarm when the parameters of the no-hazard pumping station are abnormal.

[0112] In this embodiment, the no-hazard pumping station also includes a detection system for monitoring its parameters. Specifically, these parameters include drainage volume and pump speed. Furthermore, a monitoring system is connected to the detection system. The monitoring system can issue an alarm when the pumping station's parameters are abnormal. For example, if the detection system detects abnormal parameters, it indicates a potential problem with the pump's suction inlet. In this case, the monitoring system can immediately issue an alarm, allowing maintenance personnel to promptly repair the pumping station and prevent accidents.

[0113] In the above embodiments, such as Figure 1 , Figure 3 and Figure 4 As shown, the hazard-free pumping station is an integrated pumping station, which also includes a pumping station pool 1. The pumping station pool 1 includes a pool base 14, pool walls 12 mounted on the pool base 14, and a detachable pool cover 16 mounted on top of the pool walls 12. Furthermore, the pump body is located inside the pumping station pool 1 and mounted on the pool base 14. Furthermore, the pool base 14 is made of high-strength fiberglass or concrete, which improves the flow guidance function and sludge removal efficiency. The pool walls 12 are made of high-strength fiberglass, which has good corrosion resistance and high reliability. The top cover is made of high-strength fiberglass and features an anti-slip and anti-aging design, ensuring safety and reliability. Furthermore, the top cover is equipped with ventilation holes and ventilation pipes, which allows for internal and external circulation of the pumping station pool 1, preventing problems such as foul odors from the sewage inside the pumping station pool 1.

[0114] Example 2

[0115] Embodiment 2 of the present invention provides a hidden danger-free pumping station, including: an extraction device that can be installed into the pumping station pool 1 through the pump pool inlet and can be lifted and extracted outside the pumping station pool 1; and a storage bag, the open end of which is installed at the pump pool inlet, and the bottom of which is fitted onto the extraction device. The storage bag is used to wrap the extraction device when it is lifted upwards to extract it.

[0116] The hazard-free pumping station provided by the present invention includes a lifting device 5, a grabbing device 2, and other extraction devices, as well as a collection bag. The lifting device 5 and grabbing device 2 can be assemblies composed of a pump cover, motor 52, and rotating assembly 54 in a body-cover coupled lifting pump, or they can be shearing devices installed at the inlet of the integrated pumping station. Of course, the lifting device 5 and grabbing device 2 can also be any component that can be lifted and extracted above the pump pool inlet, i.e., on the ground (e.g., an externally configured grabbing device 2 to unclog the suction inlet of the drainage pump). Since these components are used in the pumping station pool 1, they carry a certain amount of sewage or waste when lifted up. This application addresses this type of lifting device 5 and grabbing device 2 by pre-installing a collection bag at the pump pool inlet. Specifically, the open end of the collection bag is installed at the pump pool inlet, which can be the wellhead of the integrated pumping station or the entrance to other wells, pits, holes, etc., that require the use of a drainage pump. The bottom of the storage bag is fitted onto the lifting device 5, gripping device 2, and other extraction devices. This allows maintenance personnel to fold the storage bag downwards and cover the portion of the extraction devices located below the bottom of the bag when lifting them upwards to remove them. The length of the storage bag should be determined based on the length of the area to be covered; that is, the distance from the bottom of the storage bag to the bottom of the lifting device 5, gripping device 2, and other extraction devices should be less than the length of the storage bag itself, so that the bag can fold downwards and cover the lower part of the extraction devices. This design involves covering the lifting device 5, gripping device 2, and other extraction devices with a storage bag. When disassembling these devices, the bag can be folded down to completely cover them, preventing maintenance personnel from coming into contact with wastewater and debris. This ensures the health of maintenance personnel throughout the operation. Furthermore, this design prevents direct contact between maintenance personnel and the wastewater and debris from the lifting device 5, gripping device 2, and other extraction devices, thus preventing the spread of viruses, bacteria, and other harmful substances from the wastewater and debris. This significantly reduces the risk of serious safety accidents caused by dredging and maintenance issues.

[0117] Furthermore, the safe pumping station also includes a drainage pump with a lifting device 5. The specific structure of the drainage pump can be found in Embodiment 1. The lifting device 5 is one type of the aforementioned extraction device.

[0118] Furthermore, the gripping device 2 mentioned in Embodiment 1 is another type of the extraction device described above.

[0119] In this application, the material of the storage bag can be set as needed. However, its structure is preferably similar to a sleeve, which makes it easier to fix the bottom of the storage bag to the lifting device 5 and the gripping device 2. At the same time, in order to improve the fixation of the storage bag to the lifting device 5 and the gripping device 2, a limiting structure can be set on the lifting device 5 and the gripping device 2 to prevent the storage bag from slipping.

[0120] Furthermore, the pump station without hidden dangers is not equipped with a dedicated grabbing device 2. When ground cleaning is required, maintenance personnel can temporarily find a device with hooks to grab the dirt from the pump inlet.

[0121] Example 3

[0122] like Figures 1 to 6 As shown, this invention provides a hidden danger-free pumping station, including a drainage pump and a grabbing device 2. The drainage pump is installed below the pump pool inlet and includes a pump body and a lifting device 5. The pump body is installed inside the pumping station pool 1. The lifting device 5 includes a pump cover, which can be separated or coupled to the pump body via an automatic coupling device. The automatic coupling device can separate and couple the pump cover and pump body above the pump pool inlet. When the pump cover is separated from the pump body, the lifting device 5 can be lifted and pulled out of the pump pool inlet to the outside of the pumping station pool 1. The grabbing device 2 has at least one grabbing hook 24 at its bottom. After the lifting device 5 is pulled out to the pumping station pool 1, the grabbing device 2 can be inserted from the pump pool inlet and extended to the pump suction inlet of the drainage pump, and can grab the dirt 4 at the pump suction inlet through the grabbing hook 24. When large amounts of dirt 4 adhere to the inlet of the drainage pump, maintenance personnel can open the pump pool opening through the pool wall 12, pit, hole, etc., and then remove the lifting device 5, including the pump cover. The grabbing device 2 can then be inserted into the pump from the pool opening and extended to the drainage pump's inlet. The grabbing hook 24 can then be used to grab the dirt 4 from the drainage pump's inlet. The present invention provides a hidden danger-free pumping station equipped with a grabbing device 2 that matches the drainage pump. Thus, when large amounts of dirt 4 adhere to the drainage pump's inlet, the pumping station pool 1 can be opened directly, and the lifting device 5, including the pump cover, can be lifted and removed. The dirt 4 can then be removed from the drainage pump's inlet using the grabbing device 2. Pump maintenance can be performed without personnel needing to descend to the bottom of the sewage pool, ensuring the safety of maintenance personnel.

[0123] In the above embodiments, such as Figure 1 , Figure 3 and Figure 4 As shown, the no-hazard pumping station also includes a second storage bag 3, such as... Figure 1 As shown, the open end of the second collection bag 3 is installed facing upwards at the pump inlet. The bottom of the second collection bag 3 is fitted over the outer sleeve 28 of the gripping device 2. Thus, when the gripping hook 24 grips the waste 4 from the drainage pump inlet and removes the waste 4 (the lifting process is as follows...), Figure 3As shown), the second storage bag 3 can be folded down to wrap the dirt 4 (such as) grabbed by the gripping device 2. Figure 4 (As shown). Specifically, when cleaning is required, the pump pool inlet can be opened first, and the pump cover and lifting device 5 can be removed. Then, the open end of the second collection bag 3 can be installed at the pump pool inlet, and the bottom of the second collection bag 3 can be fitted over the gripping device 2 (e.g., outside the outer sleeve 28). When the gripping device 2 lifts up the contaminants, the second collection bag 3 can be used to collect the contaminants directly. Throughout the process, maintenance personnel will not come into contact with the dirt 4, and the sewage on the dirt 4 will not be exposed to the sun everywhere, thus ensuring the cleanliness and hygiene of the cleaning to the greatest extent and improving the working environment of the cleaning and maintenance personnel. The other structures of the drainage pump and the gripping device are the same as in the previous embodiment, and will not be described again here.

[0124] In the description of this specification, the terms "connection," "installation," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0125] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0126] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A pumping station with no hidden dangers, characterized in that, include: A drainage pump is used to be installed below the pump pool inlet. The drainage pump includes a pump body and a lifting device. The pump body is installed inside the pump station pool. The lifting device includes a pump cover. The pump cover and the pump body can be separated or coupled by an automatic coupling device. The automatic coupling device can separate and couple the pump cover and the pump body above the pump pool inlet. When the pump cover is separated from the pump body, the lifting device can be lifted and pulled out of the pump pool inlet to the outside of the pump station pool. The bottom of the pump body is provided with a pump suction port. After the lifting device is pulled out of the pump station pool, the grabbing device can be inserted into the pump pool and pass through the pump suction port and extend into the pump station pool to grab the dirt at the pump suction port. The lifting device also includes: A lifting rod, the upper end of which is installed at the pump pool inlet; A motor is installed at the bottom of the lifting rod and is airtightly connected to the pump cover via a motor bracket. The motor includes a motor shaft, the output end of which passes through the pump cover and is inserted into the pump body. A rotating assembly is installed inside the pump body and is driven by the motor shaft. The lifting rod is equipped with a cooling channel. One end of the cooling channel is connected to a water source, and the other end of the cooling channel is located at the motor of the drainage pump for cooling the motor.

2. The hidden danger-free pumping station according to claim 1, characterized in that, Also includes: A water collection tank is located at the bottom of the pump station pool, and the pump suction inlet is located inside the water collection tank.

3. The hidden danger-free pumping station according to claim 1, characterized in that, Also includes: The extraction device can be installed into the pumping station pool through the pump pool inlet and can be lifted and extracted outside the pump pool inlet to the outside of the pumping station pool. A storage bag, the open end of which is installed at the pump inlet, and the bottom of which is fitted onto the extraction device. The storage bag is used to wrap around the extraction device when it is lifted upwards to extract it.

4. The hidden danger-free pumping station according to claim 3, characterized in that, Also includes: The extraction device includes the lifting device, and the storage bag includes a first storage bag adapted to the lifting device.

5. The hidden danger-free pumping station according to claim 1, characterized in that, The lifting device also includes: A cooling channel, one end of which is connected to a water source, and the other end of which is set to the motor of the drain pump for cooling the motor; The drainage pump is a shielded pump, and the shielded pump is equipped with a magnetic fluid sealing device and an airlock shielding device used in conjunction with the magnetic fluid sealing device.

6. The hidden danger-free pumping station according to claim 1, characterized in that, The upper end of the lifting rod is equipped with an anti-rotation device and / or a counter-pressure device.

7. The hidden danger-free pumping station according to claim 1 or 5, characterized in that, The top of the motor is provided with a diversion plate, which is used to receive water delivered from the cooling channel. The diversion plate is provided with multiple diversion holes, which can disperse the water on the diversion plate to the motor to cool the motor. and / or The inlet of the cooling channel is connected to an external water source or the drain pipe of the drainage pump. A switch device is installed on the cooling channel, which can automatically open or close according to the status of the pump station without hidden dangers. Wherein, when the inlet of the cooling channel is connected to the drain pipe of the drainage pump, a sewage treatment device is also provided between the switching device and the drain pipe.

8. The hidden danger-free pumping station according to claim 1, characterized in that, Also includes: The gripping device has at least one gripping hook at its bottom. After the lifting device is pulled out into the pump station pool, the gripping device can be inserted into the pump pool opening and pass through the pump suction inlet, and can grab the dirt at the pump suction inlet through the gripping hook.

9. The hidden danger-free pumping station according to claim 8, characterized in that, The gripping device includes a rotatable rotating component, and at least one gripping hook is provided at the bottom of the rotating component; The gripping device may further include an electric drive device for driving the rotating component to rotate, or the gripping device may further include a hand drive device for driving the rotating component to rotate.

10. The hidden danger-free pumping station according to claim 9, characterized in that, The gripping device further includes an outer sleeve fitted over the rotating member, the rotating member being rotatable within the outer sleeve; and / or The rotating component is a steel wire rope.

11. The hidden danger-free pumping station according to claim 8, characterized in that, Also includes: The second storage bag has an open end for installation at the pump inlet, and its bottom is fitted over the gripping device to wrap the waste gripped by the gripping device.

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