Liftable float switch protection device

Abstract

The utility model discloses a liftable floating ball switch protection device, and relates to the technical field of sewage treatment, foreign matters can be prevented from winding a floating ball by arranging a protection net cover, the situation that the floating ball is stuck is avoided, and meanwhile, the protection net cover can be lifted out of a pump pool by arranging a lifting device, so that a worker can conveniently clean the protection net cover. According to the main technical scheme, the liftable floating ball switch protection device comprises a protection net cover and a lifting device, the protection net cover is arranged in a pump pool, a floating ball switch is arranged in the protection net cover, and a floating ball of the floating ball switch is suitable for floating in the protection net cover along with the liquid level change of the pump pool. The protective net cover is used for preventing foreign matter from penetrating through, and the lifting device is connected with the protective net cover and used for lifting or lowering the protective net cover.

Description

Technical Field

[0001] This application belongs to the field of wastewater treatment technology, specifically relating to a liftable float switch protection device. Background Technology

[0002] In the daily operation of urban and rural sewage lifting pump stations and rainwater pump stations, submersible sewage pumps are the core equipment, and their stable operation is crucial to the entire sewage treatment process. Currently, the start and stop of submersible sewage pumps usually rely on the detection and control of float switches. The float moves up and down with changes in the liquid level, triggering a relay to control the start and stop of the submersible sewage pump. However, in actual applications, due to the presence of a large number of lightweight foreign objects such as plastic fragments, hair, and leaves in sewage treatment plant lifting pump stations and rainwater pump stations, coupled with uncontrollable factors in the surrounding environment, these foreign objects can easily enter the pump pool and become entangled on the float switch float, preventing it from floating normally with changes in the liquid level. This seriously affects the normal functioning of the float switch and even threatens the safe and stable operation of the entire pump pool system.

[0003] To address the aforementioned issues, traditional anti-tangling measures, such as installing filters, can block foreign objects to some extent, but the filters are easily clogged by foreign objects and require frequent cleaning. Otherwise, it will seriously affect the flow of liquid and thus interfere with the normal operation of the float. Utility Model Content

[0004] In view of this, this application provides a liftable float switch protection device. By setting a protective net cover, it can prevent foreign objects from getting tangled in the float and avoid the float from getting stuck. At the same time, by setting a lifting device, the protective net cover can be lifted out of the pump pool for easy cleaning by staff.

[0005] To achieve the above objectives, this application mainly provides the following technical solutions:

[0006] This application provides a liftable float switch protection device, comprising:

[0007] A protective mesh cover is installed inside the pump pool, and a float switch is installed inside the protective mesh cover. The float of the float switch is adapted to float inside the protective mesh cover with the change of liquid level in the pump pool. The protective mesh cover is used to prevent foreign objects from passing through.

[0008] A lifting device is connected to the protective net cover and is used to raise or lower the protective net cover.

[0009] Optionally, the protective net cover is cylindrical and is vertically arranged.

[0010] Optionally, the diameter of the protective mesh cover is larger than the range of motion of the buoy.

[0011] Optionally, the bottom of the protective mesh cover is a fixed mesh structure.

[0012] Optionally, the top of the protective net cover is a movable net cover.

[0013] Optionally, when the float is in operation, the top surface of the protective mesh cover is located at a first vertical height, which is higher than the upper limit of the liquid level in the pump tank.

[0014] Optionally, when the float is in operation, the bottom surface of the protective mesh cover is located at a second vertical height, which is lower than the lower limit height of the liquid level in the pump tank.

[0015] Optionally, the liftable float switch protection device further includes:

[0016] A fixed bracket includes a fixing part and a guide part. The fixing part is disposed on the top of the pump pool, and the guide part is connected to the fixing part and extends vertically inside the pump pool. The movable part of the lifting device is slidably disposed on the guide part.

[0017] Optionally, at least two connection points are provided between the movable part of the lifting device and the protective net cover.

[0018] Optionally, at least two of the connection points include a first connection point and a second connection point, wherein the first connection point is located in the upper half of the protective mesh cover and the second connection point is located in the lower half of the protective mesh cover.

[0019] Optionally, a cover plate is detachably provided on the top of the pump pool. The cover plate has a first state and a second state. When the cover plate is in the first state, it covers the top of the pump pool. When the cover plate is in the second state, it is separated from the pump pool.

[0020] By employing the above technical solution, this application has at least the following beneficial effects:

[0021] The liftable float switch protection device provided in the embodiments of this application can physically block the float by setting a protective net cover, preventing foreign objects such as plastic fragments, hair, and leaves in the pump pool from contacting and entangled in the float. The position of the protective net cover can be flexibly adjusted by setting a lifting device. When maintenance, repair, or cleaning of the float switch inside the protective net cover is required, the protective net cover can be lifted out of the pump pool using the lifting device. Compared with traditional fixed protective devices, this greatly reduces the difficulty and time of maintenance. At the same time, it also facilitates the inspection of the float and float switch to check for residual small foreign objects or damage to the float. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of a liftable float switch protection device according to an optional embodiment of this application.

[0023] The reference numerals in the attached figures are as follows:

[0024] 1. Pump pool; 2. Protective net cover; 3. Lifting device; 31. Movable part; 4. Fixed bracket; 41. Fixed part; 42. Guide part; 5. Cover plate; 6. Float ball. Detailed Implementation

[0025] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0027] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0028] The preferred embodiments of this application are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit this application.

[0029] See Figure 1As shown, according to an embodiment of this application, a liftable float switch protection device is provided, including: a protective mesh cover 2, which is disposed in a pump pool 1, and a float 6 is adapted to float in the protective mesh cover 2 according to changes in liquid level, the protective mesh cover 2 being used to prevent foreign objects from entering; and a lifting device 3, which is connected to the protective mesh cover 2, the lifting device 3 being used to lift or lower the protective mesh cover 2.

[0030] In this embodiment, the float switch is installed inside the protective mesh cover 2. The protective mesh cover 2 can prevent foreign objects such as plastic fragments, hair, and leaves inside the pump pool 1 from contacting and entangled with the float 6. The position of the protective mesh cover 2 can be flexibly adjusted by the lifting device 3. When it is necessary to maintain, repair, or clean the float switch inside the protective mesh cover 2, the protective mesh cover 2 can be lifted out of the pump pool 1 by the lifting device 3. Compared with traditional fixed protective devices, this greatly reduces the difficulty and time of maintenance. At the same time, it also facilitates the inspection of the float 6 and the float switch to check for residual small foreign objects or damage to the float 6.

[0031] The protective mesh cover 2 can be a mesh structure. Specifically, the protective mesh cover 2 can be a mesh structure made using a cross-weaving process, which can prevent foreign objects from entering the interior of the protective mesh cover 2 while ensuring the smooth passage of liquid.

[0032] Specifically, in practical applications, when the float 6 floats up and down in the pump pool 1 with changes in liquid level, the protective mesh cover 2 with a mesh structure is placed on the outside of the float 6 to form a physical isolation, blocking foreign objects from the outside and ensuring that the float 6 will not be disturbed or entangled by foreign objects; at the same time, the diameter of the protective mesh cover 2 with a mesh structure is larger than the range of motion of the float 6, which can adapt to the up and down floating of the float 6 and ensure the normal operating radius of the float 6.

[0033] The protective mesh cover 2 is connected to the lifting device 3, used to raise or lower the protective mesh cover 2. Understandably, when maintenance or repair of the float switch or protective mesh cover 2 is required, the lifting device 3 can be used to raise the protective mesh cover 2 above the pump pool 1, allowing personnel to easily operate the float switch inside, such as replacing the float 6 or checking the electrical connections of the float switch. During daily operation, if the liquid level in the pump pool 1 changes significantly, the lifting device 3 can also be used to adjust the position of the protective mesh cover 2, ensuring that the float 6 is always within a suitable liquid level range, guaranteeing accurate monitoring of the liquid level by the float switch.

[0034] In some specific examples, the lifting device 3 can be installed at the top edge of the pump pool 1 and connected to the protective net cover 2 via ropes, chains, telescopic rods, or other structures. This allows workers to control the raising and lowering of the protective net cover 2 from above, without excessively occupying the internal space of the pump pool 1 and with relatively little interference to the flow of liquid within the pump pool 1. In other specific examples, the lifting device 3 can be installed on the side of the pump pool 1, using auxiliary devices such as tracks and sliders to ensure the vertical raising and lowering of the protective net cover 2. This is suitable for pump pools with special shapes or scenarios with special layout requirements. For example, when there are other equipment or buildings around the pump pool 1 and the top space is limited, installing the lifting device 3 on the side can utilize the space on the side. In addition, the lifting device 3 can also be installed at the bottom of the pump pool 1. The lifting device 3 installed at the bottom can lift the protective net cover 2 upwards using hydraulic or mechanical jacks.

[0035] Specifically, in this embodiment, when the float switch is operating normally, the protective mesh cover 2 isolates the float 6 from various foreign objects in the pump pool 1, ensuring that the float 6 can float freely within the protective mesh cover 2 as the liquid level rises and falls. Simultaneously, the lifting device 3 is locked or in standby mode. Therefore, when the liquid level changes, the float 6 operates normally within the protective mesh cover 2, triggering the float switch to perform corresponding operations, such as controlling the start and stop of the submersible pump. When maintenance is required or the liquid level is abnormal and the position of the protective mesh cover 2 needs adjustment, the lifting device 3 is activated to raise or lower the protective mesh cover 2. Through the cooperation of the protective mesh cover 2 and the lifting device 3, the reliability of the float switch and the safety and stability of the entire pump pool 1 system can be improved. At the same time, it facilitates maintenance and adapts to different operating conditions, overcoming the problems of easy clogging and difficult maintenance of traditional filters.

[0036] In some possible implementations disclosed in this application, see [link to relevant documentation]. Figure 1 As shown, the protective net cover 2 is cylindrical and is set vertically.

[0037] In this embodiment, by setting the protective mesh cover 2 as a vertical cylindrical structure, it can match the up and down floating path of the float 6. This makes the float 6 less constrained by the inner wall of the cylinder when it moves inside the protective mesh cover 2, and it can rise and fall with the liquid level more naturally and smoothly. This reduces movement jamming or deviation caused by the protective structure, and keeps the movement trajectory of the float 6 in the vertical direction, accurately triggering the liquid level control signal.

[0038] In some possible implementations disclosed in this application, see [link to relevant documentation]. Figure 1 As shown, the bottom of the protective net cover 2 is a fixed mesh structure.

[0039] In this embodiment, by setting the bottom of the protective mesh cover 2 to a fixed mesh structure, foreign objects can be prevented from entering the interior of the protective mesh cover 2 from the bottom, providing all-round protection for the float 6. At the same time, it also helps maintain the relative stability of the liquid environment inside the protective mesh cover 2, reducing interference from complex external water flow on the internal liquid. This makes the liquid environment around the float 6 closer to the state of natural liquid level changes, allowing the float 6 to more accurately sense the liquid level and avoiding misjudgment of the liquid level due to the impact of external water flow, thereby improving the accuracy of liquid level monitoring.

[0040] Specifically, taking a wastewater treatment plant as an example, in practical applications, wastewater contains a large amount of suspended solids, silt, and various debris. When this wastewater enters pump pool 1, heavier particles such as silt gradually settle to the bottom. If the bottom of the protective mesh cover 2 is open, the silt settled at the bottom may be stirred up by the water flow disturbance generated when the pump starts or stops, and enter the protective mesh cover 2 through the bottom, contacting the float 6 and affecting its normal floating. A fixed mesh structure at the bottom of the protective mesh cover 2 effectively prevents this from happening, preventing debris or foreign objects from entering the protective mesh cover 2 with the water flow, thus maintaining the cleanliness of the environment around the float 6. Simultaneously, in situations of frequent liquid level changes, such as in a rainwater pumping station, changes in rainfall intensity can cause the liquid level to rise or fall rapidly. When the liquid level drops rapidly, if the bottom of the protective mesh cover 2 is open, the float 6 may detach from the bottom due to the suction effect of the water flow. However, the design of the bottom of the protective net cover 2 is a fixed mesh structure, which acts like a "bottom catch". No matter how the liquid level changes, it can ensure that the float 6 is confined inside the protective net cover 2 and continuously and accurately monitor the liquid level.

[0041] In some possible implementations disclosed in this application, see [link to relevant documentation]. Figure 1 As shown, the top of the protective net cover 2 is a movable net cover.

[0042] In this embodiment, by setting the top of the protective mesh cover 2 as a movable mesh cover, a convenient passage is provided for the installation and maintenance of the float 6. Simultaneously, when the liquid level rises and liquid enters the interior of the protective mesh cover 2, the movable mesh cover at the top of the protective mesh cover 2 allows the liquid to flow naturally within the protective mesh cover 2, reducing resistance caused by limited liquid flow space. In other words, the float 6 can float in a relatively more natural liquid environment, better following changes in liquid level and ensuring the accuracy of liquid level monitoring. Furthermore, it is understood that the movable mesh cover at the top of the protective mesh cover 2 also prevents foreign objects from entering the protective mesh cover 2 from the top, ensuring that the float 6 is not interfered with or entangled by foreign objects.

[0043] In some specific examples, one edge of the top cover of the protective net cover 2 is connected to the main body of the protective net cover by a hinge, so that the top cover can rotate around the hinge axis like a door; in other specific examples, sliding tracks are provided on both sides or around the top of the protective net cover 2, and the cover is connected to the track by a slider or pulley.

[0044] Specifically, taking a wastewater treatment plant as an example, in practical applications, when installing a liftable float switch protective device, workers can first place the protective net cover 2 vertically inside the pump pool 1, and then directly insert the float 6 into the appropriate position on the protective net cover 2 by opening the top cover to form an opening. The float switch wiring is then connected. The installation process is simple and efficient. In subsequent maintenance work, if it is suspected that the float 6 is entangled by a small amount of foreign matter or that the float 6 itself is malfunctioning, workers can stand above the pump pool 1 and directly inspect the condition of the float 6 by opening the top cover of the protective net cover 2. If it is necessary to clean foreign matter or replace the float 6, tools can be conveniently used from the top. Furthermore, when the protective net cover 2 is connected to the lifting device 3, the protective net cover 2 can be lifted out of the pump pool 1 first using the lifting device 3, and then the top cover of the protective net cover 2 can be opened to clean foreign matter or replace the float 6.

[0045] In some possible implementations disclosed in this application, see [link to relevant documentation]. Figure 1 As shown, when the float 6 is in working condition, the top surface of the protective net cover 2 is at the first vertical height, which is higher than the upper limit of the liquid level of the pump pool 1.

[0046] In this embodiment, by setting the top surface of the protective mesh cover 2 higher than the upper limit of the liquid level in the pump pool 1, foreign objects can be effectively prevented from entering the interior of the protective mesh cover 2 from above throughout the entire process of liquid level changes. Even when the liquid level in the pump pool 1 reaches the upper limit, floating objects on the liquid surface are unlikely to cross the protective mesh cover 2 and enter the interior to interfere with the float 6. Therefore, the float 6 is provided with more comprehensive protection, ensuring that the float 6 is always in a relatively clean environment free from foreign object interference during operation.

[0047] Specifically, in practical applications, the liquid level in pump tank 1 changes continuously during normal operation. If the top surface of the protective mesh cover 2 is below the upper limit of the liquid level, the float 6, restricted by the top cover of the protective mesh cover 2, will not be able to rise normally with the liquid level during the liquid level rise process, and will not be able to reach its proper higher position corresponding to the actual liquid level. However, when the top surface of the protective mesh cover 2 is at a first vertical height above the upper limit of the liquid level, the float 6 inside the protective mesh cover 2 can freely rise normally with the liquid level, accurately reaching the height corresponding to the actual liquid level, truthfully reflecting the liquid level change, and ensuring the accuracy of liquid level measurement and display.

[0048] In some possible implementations disclosed in this application, see [link to relevant documentation]. Figure 1 As shown, when the float 6 is in working condition, the bottom surface of the protective net cover 2 is located at the second vertical height, which is lower than the lower limit height of the liquid level in the pump pool 1.

[0049] In this embodiment, by setting the bottom surface of the protective mesh cover 2 to be lower than the lower limit height of the liquid level in the pump pool 1, it is ensured that when the liquid level is low, the float 6 inside the protective mesh cover 2 can float freely and normally with the liquid level, accurately reaching the height corresponding to the actual liquid level, truthfully reflecting the liquid level change, ensuring the accuracy of liquid level measurement and display, thereby providing a reliable control signal for the pump pool system and avoiding maloperation of the equipment (such as a submersible sewage pump) in the pump pool 1 due to abnormal liquid level signals.

[0050] Specifically, taking a wastewater treatment plant as an example, in practical applications, the wastewater level constantly changes with the inflow and outflow of wastewater. When the wastewater level drops to the lower limit, if the bottom surface of the protective mesh cover 2 is higher than or equal to the lower limit, the float 6 may be restricted by the protective mesh cover 2 and unable to float normally, thus causing the float switch to be unable to accurately sense the change in liquid level. However, when the bottom surface of the protective mesh cover 2 is at a second vertical height below the lower limit, the float 6 is still surrounded by the protective mesh cover 2 during the liquid level drop, meaning it is not disturbed by foreign objects at the bottom of the pump tank 1 and can accurately monitor the change in liquid level.

[0051] In some possible implementations disclosed in this application, see [link to relevant documentation]. Figure 1 As shown, the liftable float switch protection device also includes: a fixed bracket 4, which includes a fixed part 41 and a guide part 42. The fixed part 41 is located on the top of the pump pool 1, and the guide part 42 is connected to the fixed part 41 and extends vertically inside the pump pool 1. The movable part 31 of the lifting device 3 is slidably arranged on the guide part 42.

[0052] In this embodiment, the guide part 42 provides precise vertical guidance for the movable part 31 of the lifting device 3, ensuring that the protective net cover 2 moves along a predetermined vertical direction during lifting. This helps avoid instability such as swaying, tilting, or offset during lifting, ensuring smooth ascent or descent. This effectively prevents collision damage to the float 6 caused by abnormal movement trajectory of the protective net cover 2, and also reduces interference with other equipment and structures inside the pump tank 1. Meanwhile, the fixing part 41 of the fixed bracket 4 is located at the top of the pump tank 1, providing a stable support point for the entire protective device. Through the coordinated work of the guide part 42 and the lifting device 3, the protective device can better withstand various external forces, such as water flow impact and equipment vibration, thereby extending the service life of the device and reducing maintenance frequency.

[0053] The fixing part 41 of the fixed bracket 4 can be in the form of a lock, snap, or bolt. The guide part 42 can be in the form of an L-shaped metal rod or an L-shaped metal plate. Further, in this embodiment, the guide part 42 includes a first section and a second section. The first section, as the short side of the guide part 42, is attached to the top edge of the pump pool 1 and locked in place by the fixing part 41 (such as a lock, snap, or bolt) to ensure a stable connection between the guide part 42 and the pump pool 1. The second section is the long side of the guide part 42, extending downwards vertically and directly into the liquid surface of the pump pool 1, continuing to extend. This allows the guide part 42 to provide precise vertical guidance for the movable part 31 of the lifting device 3, ensuring the stability and accuracy of the protective net cover 2 of the liftable float switch protective device during the lifting process.

[0054] Specifically, taking a wastewater treatment plant as an example, in practical applications, workers can first install the fixing part 41 of the fixed bracket 4 at a suitable position on the top of the pump pool 1, and then install the lifting device 3 and the protective net cover 2 along the guide part 42, making it easier to position and align the various components. This not only improves installation efficiency but also ensures the accuracy of the device installation, which is beneficial to the stability of the protective device during subsequent use.

[0055] In some possible implementations disclosed in this application, see [link to relevant documentation]. Figure 1 As shown, at least two connection points are provided between the movable part 31 of the lifting device 3 and the protective net cover 2.

[0056] In this embodiment, by setting at least two connection points, the tension and gravity generated during the lifting process can be dispersed, avoiding damage to the connection between the lifting device 3 and the protective net cover 2 due to excessive force at a single point. This ensures that the protective net cover 2 is always tightly connected to the lifting device 3 during the lifting process, and there will be no situation of falling off or loosening, thus ensuring the reliable operation of the entire protective device.

[0057] In this embodiment, the driving part of the lifting device 3 is installed at the top edge of the pump pool 1. The driving part and movable part 31 of different types of lifting devices 3 are described in detail below: When the lifting device 3 is a rope structure, the driving part is a motor-driven winding wheel, and the movable part 31 is the rope. After the motor is powered on, it drives the winding wheel to rotate. By winding or releasing the rope through the winding wheel, the rope is raised or lowered, thereby causing the protective net cover 2 connected to the rope to rise or fall. When the lifting device 3 is a chain structure, the driving part is a sprocket, and the movable part 31 is the chain. The sprocket is driven to rotate by a power source such as a motor. During rotation, the sprocket and the chain mesh with each other, thereby causing the protective net cover 2 connected to the chain to rise or fall.

[0058] Specifically, taking a wastewater treatment plant as an example, in practical applications, the water flow within the pump pool 1 is quite complex, generating significant water flow impact forces. When the lifting device 3 raises or lowers the protective mesh cover 2, if only one connection point is used, the protective mesh cover 2 may sway due to uneven force under the water flow impact. This not only causes the connection point to bear excessive shear force, easily leading to damage, but may also cause the protective mesh cover 2 to tilt, affecting the normal floating of the float 6. However, by setting at least two connection points, the water flow impact force can be effectively dispersed, allowing the protective mesh cover 2 to remain stable during raising and lowering, unaffected by water flow interference.

[0059] In the above embodiments, see Figure 1 As shown, at least two connection points include a first connection point and a second connection point. The first connection point is located in the upper half of the protective net cover 2, and the second connection point is located in the lower half of the protective net cover 2.

[0060] By setting the first connection point in the upper half of the protective net cover 2 and the second connection point in the lower half, the balance of the protective net cover 2 during its raising and lowering process can be better controlled. Specifically, the two connection points apply tension to the protective net cover 2 from different heights, forming a stable force-bearing structure that effectively prevents the protective net cover 2 from tilting forward, backward, or sideways. Especially when facing complex water flow environments or external disturbances, this layout can significantly enhance the stability of the protective net cover 2.

[0061] Furthermore, in some specific examples, the first connection point and the second connection point are staggered along the radial direction of the protective mesh cover 2; in other specific examples, the first connection point and the second connection point are opposite to each other along the axial direction of the protective mesh cover 2.

[0062] In some possible implementations disclosed in this application, see [link to relevant documentation]. Figure 1 As shown, a cover plate 5 is detachably provided on the top of the pump pool 1. The working states of the cover plate 5 include a first state and a second state. When the cover plate 5 is in the first state, the cover plate 5 covers the top of the pump pool 1. When the cover plate 5 is in the second state, the cover plate 5 is separated from the pump pool 1.

[0063] When the cover plate 5 is in the first state covering the top of the pump pool 1, it can prevent personnel from accidentally falling into the pump pool 1 and avoid personal safety accidents. On the other hand, it can also prevent foreign objects (such as large garbage, tools, etc.) from falling into the pump pool 1, reducing the potential risk of damage to the equipment (including the liftable float switch protection device) in the pump pool 1. Furthermore, it can also reduce the entry of natural factors such as dust and rainwater into the pump pool 1. In addition, it can also reduce the spread of odors generated by the evaporation of liquid in the pump pool 1 to the surrounding environment.

[0064] When the cover 5 is in its second state, separated from the pump pool 1, workers can easily maintain and repair the equipment inside the pump pool 1 (such as the liftable float switch protection device, submersible sewage pump, etc.). Operation is not required with the cover 5 obstructing the view, providing ample operating space and making maintenance and repair work more efficient. For example, when inspecting the liftable float switch protection device, workers can directly access all components of the device, including the protective mesh cover 2 and the lifting device 3, facilitating problem detection and repair.

[0065] It will be readily understood by those skilled in the art that the aforementioned advantageous methods can be freely combined and superimposed without conflict.

[0066] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application. The above are merely preferred embodiments of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this application, and these improvements and modifications should also be considered within the protection scope of this application.

Claims

1. A lift-and-float ball switch guard, comprising: The utility model relates to a kind of pump pool protection device, including: Protective screen cover (2), the protective screen cover (2) is arranged in pump pool (1), float ball switch is arranged in the protective screen cover, the float ball of the float ball switch (6) is suitable for floating in the protective screen cover (2) with the liquid level of the pump pool changes, the protective screen cover (2) is used to block foreign matter through; Lifting device (3), the lifting device (3) is connected with the protective screen cover (2), and the lifting device (3) is used to lift or lower the protective screen cover (2).

2. The liftable float switch guard of claim 1, wherein, The protective screen cover (2) is cylindrical, and the protective screen cover (2) is vertically arranged.

3. The liftable float switch guard of claim 2, wherein, The bottom of the protective screen cover (2) is a fixed mesh structure.

4. The liftable float switch guard of claim 2, wherein, The top of the protective screen cover (2) is a movable mesh cover.

5. The elevated float switch guard of claim 1, wherein, When the float ball (6) is in working condition, the top surface of the protective screen cover (2) is located at a first vertical height, which is higher than the upper limit height of the liquid level of the pump pool (1).

6. The elevated float switch guard of claim 1, wherein, When the float ball (6) is in working condition, the bottom surface of the protective screen cover (2) is located at a second vertical height, which is lower than the lower limit height of the liquid level of the pump pool (1).

7. The elevated float switch guard of claim 1, wherein, Further comprising: Fixed support (4), the fixed support (4) includes fixed part (41) and guide part (42), the fixed part (41) is arranged at the top of the pump pool (1), the guide part (42) is connected with the fixed part (41), and extends in the vertical direction inside the pump pool (1), and the movable part (31) of the lifting device (3) is slidably arranged on the guide part (42).

8. The liftable float switch guard of claim 1, wherein, At least two connection points are provided between the movable part (31) of the lifting device (3) and the protective screen cover (2).

9. The liftable float switch guard of claim 8, wherein, The at least two connection points include a first connection point and a second connection point, the first connection point is arranged in the upper half region of the protective screen cover (2), and the second connection point is arranged in the lower half region of the protective screen cover (2).

10. The liftable float switch guard of claim 1, wherein, The top of the pump pool (1) is detachably provided with a cover plate (5), and the working state of the cover plate (5) includes a first state and a second state, when the cover plate (5) is in the first state, the cover plate (5) covers the top of the pump pool (1), and when the cover plate (5) is in the second state, the cover plate (5) is separated from the pump pool (1).

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