Pump body safe operation device of dewatering pump station

Abstract

The utility model discloses a pump body safe operation device of dry pump station, including water tank, still including setting in the floating box of water tank inside and installing the cleaning assembly of water tank inner wall, the bottom end of floating box inner wall is fixed with control module, and the upper end of control module is passed and is equipped with the first groove body, and the sliding of first groove body inner wall is provided with extrusion block. The utility model discloses through water level rising drive floating box to move up, makes the lower end of floating box under the traction of second connecting wire to be downward, the gravity ball in the guide rail inside moves down under the action of gravity and drives extrusion block to compress spring downward, thereby drive two connection contact points mutual contact, after control module will connect signal transmission to controller and make it start centrifugal pump to the water in the water tank and carry out delivery, because the liquid inlet height of centrifugal pump is lower than the height of heavy block, thereby guarantee centrifugal pump is in the state of positive pressure and continues to work, avoids appearing the damage of pump body caused by the phenomenon of sucking empty.

Description

Technical Field

[0001] This utility model relates to the field of pump body safety technology, specifically to a pump body safety operation device for a drainage pumping station. Background Technology

[0002] Drainage pumping stations are "lifeline projects" in mining, underground engineering (tunnels / subways), and municipal drainage. Their core function is to pump out groundwater, mine water, or rainwater during the flood season to maintain the dryness of the work area, the stability of the groundwater level, and the smooth flow of drainage. This is directly related to production safety and project progress. Drainage pumps operate under extreme conditions of "high sand content, high corrosion, and high dynamic load" for a long time, resulting in frequent failures. This not only causes water pumping interruptions, leading to safety risks such as well flooding and waterlogging, but also causes economic losses due to pump damage and parts replacement.

[0003] In existing technologies, the pump body of a drainage pumping station is the core equipment for transporting media such as mine water and groundwater by converting mechanical energy into liquid kinetic energy and pressure energy. The internal centrifugal force causes the liquid to be thrown from the center of the impeller to the edge of the impeller, resulting in a low-pressure zone in the center of the impeller. At this time, the media such as mine water and groundwater are drawn into the suction chamber through the bottom valve (one-way valve to prevent liquid backflow when the machine stops) at the pump body inlet under the pressure difference between the external atmospheric pressure and the low pressure at the center of the impeller. The liquid is then filled to the center of the impeller, completing the media suction process.

[0004] When extracting water from mine pits, the foot valve of the centrifugal pump is usually placed directly at the water source. Since the foot valve cannot extend to the bottom of the water source, during the extraction process, changes in the liquid level may cause the liquid level to fall below the pump inlet, resulting in air entering the pump body and causing damage to components such as the centrifugal pump impeller. Utility Model Content

[0005] To overcome the shortcomings of existing technologies, the purpose of this utility model is to provide a safe operation device for the pump body of a drainage pumping station. As the water level rises, the floating box moves upward. Under the traction of the second connecting line, the lower end of the floating box faces downward. At this time, the gravity ball inside the guide rail moves downward under the action of gravity and drives the squeezing block to compress the spring downward, thereby causing the two connecting contact points to come into contact with each other. Then, the control module transmits the connection signal to the controller to start the centrifugal pump to transport water in the water tank. Since the height of the inlet of the centrifugal pump is lower than the height of the weight, the centrifugal pump is kept in a positive pressure state to work continuously, avoiding the phenomenon of cavitation that could damage the pump body.

[0006] The objective of this utility model is achieved through the following technical solution: The pump body safety operation device of the drainage pumping station includes a water tank; it also includes a floating box installed inside the water tank and a cleaning component installed on the inner wall of the water tank; a control module is fixedly connected to the bottom of the inner wall of the floating box, and a first groove is opened through the upper end of the control module. A squeezing block is slidably installed on the inner wall of the first groove, and a spring is fixedly connected between the squeezing block and the bottom of the inner wall of the first groove. A connecting contact point is fixedly connected to the lower end of the squeezing block and the bottom of the inner wall of the first groove. A guide rail is fixedly connected to the upper end of the control module, and a gravity ball is slidably installed on the inner wall of the guide rail.

[0007] In one optional embodiment, a first connecting line is fixedly connected to the lower end of the upper cover of the water tank, a weight is fixedly connected to the lower end of the first connecting line, and a second connecting line is fixedly connected to the lower end of the weight.

[0008] In one optional embodiment, the end of the second connecting line away from the weight is fixed to the lower end of the floating box, and a submersible pump is provided on the left side of the water tank, with a cable fixed to the upper end of the submersible pump.

[0009] In one optional embodiment, a water outlet pipe is fixedly connected to the outer wall of the submersible pump, and the other end of the water outlet pipe is detachably connected to a first connecting pipe via a flange. The other end of the first connecting pipe is fixedly connected to the left end of the water tank.

[0010] In one optional embodiment, a protective mesh cover is provided on the outer wall of the water inlet end of the submersible pump, and a fixing ring is provided on the outer wall of the protective mesh cover. The fixing ring is detachably connected by bolts.

[0011] In one optional embodiment, a base plate is fixedly connected to the lower end of the water tank, a centrifugal pump is fixedly connected to the upper end of the base plate, and a second connecting pipe is fixedly connected between the centrifugal pump and the inclined surface at the bottom of the water tank.

[0012] In one optional embodiment, the cleaning assembly includes a limiting plate fixed to the inner wall of the water tank, a collection box slidably disposed on the inner wall of the water tank, a drain pipe fixed to the left end of the water tank, and a solenoid valve disposed on the drain pipe.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. As the water level rises, the floating box moves upward. Under the traction of the second connecting line, the lower end of the floating box faces downward. At this time, the gravity ball inside the guide rail moves downward under the action of gravity and drives the squeezing block to compress the spring downward, thereby causing the two connecting contact points to come into contact with each other. Then, the control module transmits the connection signal to the controller to start the centrifugal pump to transport water in the water tank. Since the height of the inlet of the centrifugal pump is lower than the height of the weight, the centrifugal pump is kept in a positive pressure state to work continuously, avoiding cavitation and damage to the pump body.

[0014] 2. By installing a protective mesh cover at the water inlet of the submersible pump, large solid impurities can be reduced from entering the pump body, increasing the service life of the pump. By adding flocculant to the water, impurities such as silt in the water are agglomerated into larger precipitates. Under the action of the inclined surface at the bottom of the water tank, the precipitates slide downward and accumulate inside the collection box. With the help of the filter screen inside the second connecting pipe, impurities inside the water body are prevented from entering the pump body during the centrifugal pumping process, thus avoiding damage to components such as the impeller. Attached Figure Description

[0015] Figure 1 A three-dimensional structural diagram of the safety operation device for the pump body of a drainage pumping station; Figure 2 A three-dimensional cross-sectional structural diagram of the water tank for the safe operation device of the pump body in the drainage pumping station; Figure 3 A cross-sectional three-dimensional structural diagram of the floating box, which is a safety device for the pump body of a drainage pumping station. Figure 4 A three-dimensional structural diagram of the protective mesh cover for the safe operation device of the pump body in a drainage pumping station; Figure 5 A cross-sectional three-dimensional structural diagram of the collection box for the safe operation device of the pump body in the drainage pumping station.

[0016] In the diagram: 1. Water tank; 101. Floating box; 102. Control module; 103. First tank; 104. Extrusion block; 105. Spring; 106. Connecting contact point; 107. Guide rail; 108. Gravity ball; 2. First connecting line; 201. Limiting plate; 202. Collection box; 203. Drain pipe; 204. Solenoid valve; 3. Weight; 4. Second connecting line; 5. Submersible pump; 6. Cable; 7. Water outlet pipe; 8. First connecting pipe; 9. Protective net cover; 10. Fixing ring; 11. Base plate; 12. Centrifugal pump; 13. Second connecting pipe. Detailed Implementation

[0017] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments. Unless otherwise specified, the materials and equipment used in this embodiment are all commercially available. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0018] In the description of this application, it should be understood that the terms "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are 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, and therefore should not be construed as a limitation on this application. In the description of this application, "a plurality of" means two or more, unless otherwise precisely specified.

[0019] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "connected," "linked," and "connected" should be interpreted broadly. For example, they can refer to a fixed connection, a connection through an intermediary, the internal connection of two elements, or the interaction between two elements. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0020] The terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such process, method, product, or apparatus.

[0021] Please refer to Figures 1-5This utility model provides an embodiment of a safe operation device for a drainage pumping station, including a water tank 1; it also includes a floating box 101 disposed inside the water tank 1 and a cleaning assembly installed on the inner wall of the water tank 1; a control module 102 is fixedly connected to the bottom of the inner wall of the floating box 101, a first groove 103 is opened through the upper end of the control module 102, a squeezing block 104 is slidably disposed on the inner wall of the first groove 103, a spring 105 is fixedly connected between the squeezing block 104 and the bottom of the inner wall of the first groove 103, and a connecting contact point 106 is fixedly connected to the lower end of the squeezing block 104 and the bottom of the inner wall of the first groove 103; a guide rail 107 is fixedly connected to the upper end of the control module 102, a gravity ball 108 is slidably disposed on the inner wall of the guide rail 107, and the floating box 101 is moved upward by the rise of the water level; the second connecting line 4 is a soft rope. The floating box 101 moves upward and straightens the second connecting line 4 together. Under the traction of the second connecting line 4, the lower end of the floating box 101 faces downward. At this time, the gravity ball 108 inside the guide rail 107 moves downward under the action of gravity and drives the squeezing block 104 to compress the spring 105 downward, thereby causing the two connecting contact points 106 to come into contact with each other. Then, the control module 102 transmits the connection signal to the controller to start the centrifugal pump 12 to transport water in the water tank 1. Since the height of the inlet of the centrifugal pump 12 is lower than the height of the weight 3, the centrifugal pump 12 is kept in a positive pressure state to work continuously, avoiding the phenomenon of air suction that would damage the pump body. This solves the problem that the liquid level may be lower than the pump body inlet due to changes in the liquid level, which would cause air to enter the pump body and damage components such as the impeller.

[0022] Please refer to Figures 1-4In a preferred embodiment of this utility model, a first connecting line 2 is fixedly connected to the lower end of the upper cover of the water tank 1, a weight 3 is fixedly connected to the lower end of the first connecting line 2, a second connecting line 4 is fixedly connected to the lower end of the weight 3, and the end of the second connecting line 4 away from the weight 3 is fixedly connected to the lower end of the floating box 101. A submersible pump 5 is provided on the left side of the water tank 1, a cable 6 is fixedly connected to the upper end of the submersible pump 5, a water outlet pipe 7 is fixedly connected to the outer wall of the submersible pump 5, and the other end of the water outlet pipe 7 is detachably connected to a first connecting pipe 8 through a flange. The other end of the first connecting pipe 8 is fixedly connected to the left end of the water tank 1. A protective mesh cover 9 is provided on the outer wall of the water inlet end of the submersible pump 5, and a fixing ring 10 is provided on the outer wall of the protective mesh cover 9. The fixing ring 10 is detachably connected by bolts. A bottom plate 11 is fixedly connected to the lower end of the water tank 1. A centrifugal pump 12 is fixedly connected to the upper end of plate 11. A second connecting pipe 13 is fixedly connected between the centrifugal pump 12 and the inclined surface at the bottom of the water tank 1. By installing a protective screen 9 at the water inlet of the submersible pump 5, large solid impurities can be reduced from entering the pump body, increasing the service life of the pump body. As the submersible pump 5 continuously pumps, the liquid level inside the water tank 1 continuously rises. Then, a flocculant is added to the water, causing the silt and other impurities in the water to agglomerate into larger precipitates. Under the action of the inclined surface at the bottom of the water tank 1, the precipitates slide downward and accumulate inside the collection box 202. Under the action of the filter screen inside the second connecting pipe 13, impurities inside the water body are prevented from entering the pump body during the pumping process of the centrifugal pump 12, which could damage the impeller and other components.

[0023] Please refer to Figure 5 In a preferred embodiment of this utility model, the cleaning component includes a limiting plate 201 fixed to the inner wall of the water tank 1, a collection box 202 slidably disposed on the inner wall of the water tank 1, a drain pipe 203 fixed to the left end of the water tank 1, and a solenoid valve 204 disposed on the drain pipe 203. After standing for a period of time, the sediment inside accumulates together. Then, the collection box 202 is removed by opening the top cover of the water tank 1, which makes it convenient to process most of the sediment inside the water tank 1. Afterwards, the remaining water and impurities inside the water tank 1 are discharged to the outside by opening the solenoid valve 204.

[0024] In use, the submersible pump 5 is first placed at the bottom of the pool. The submersible pump 5 is then started to transport water from the pool into the water tank 1. A protective mesh cover 9 is installed at the water inlet of the submersible pump 5 to reduce the entry of large solid impurities into the pump body and increase the service life of the pump body. As the submersible pump 5 continues to pump, the liquid level inside the water tank 1 continues to rise. Then, a flocculant is added to the water to cause the silt and other impurities in the water to agglomerate into larger precipitates. Under the action of the inclined surface at the bottom of the water tank 1, the precipitates slide down and accumulate inside the collection box 202. Under the action of the filter screen inside the second connecting pipe 13, impurities inside the water body are prevented from entering the pump body during the pumping process of the centrifugal pump 12, which could damage the impeller and other components. As the water level exceeds the height of the weight 3, the height of the floating box 101 rises accordingly. Under the traction of the second connecting line 4, the lower end of the floating box 101 faces downward. At this time, the gravity ball 108 inside the guide rail 107 moves downward under the action of gravity and drives the squeezing block 104 to compress the spring 105 downward, thereby causing the two connecting contact points 106 to come into contact with each other. Then, the control module 102 transmits the connection signal to the controller to start the centrifugal pump 12 to transport water inside the water tank 1. Since the height of the inlet of the centrifugal pump 12 is lower than the height of the weight 3, the centrifugal pump 12 is kept in a positive pressure state to continue to work, avoiding the phenomenon of cavitation that could damage the pump body. After the transfer is completed, let it stand for a period of time to allow the sediment inside to accumulate. Then, open the top cover of water tank 1 and take out the collection box 202 to facilitate the treatment of most of the sediment inside water tank 1. After that, open the solenoid valve 204 to discharge the remaining water and impurities inside water tank 1 to the outside.

[0025] Through the above steps, the rising water level causes the float box 101 to move upward. Under the traction of the second connecting line 4, the lower end of the float box 101 faces downward. At this time, the gravity ball 108 inside the guide rail 107 moves downward under the action of gravity and causes the squeezing block 104 to compress the spring 105 downward, thereby causing the two connecting contact points 106 to come into contact with each other. Then, the control module 102 transmits the connection signal to the controller to start the centrifugal pump 12 to transport water in the water tank 1. Since the height of the inlet of the centrifugal pump 12 is lower than the height of the weight 3, the centrifugal pump 12 is kept in a positive pressure state to work continuously, avoiding the phenomenon of air suction that could damage the pump body. This solves the problem that changes in the liquid level may cause the liquid level to fall below the pump body inlet, resulting in air entering the pump body and damaging components such as the impeller.

[0026] Although only certain components and embodiments of this application have been illustrated and described, many modifications and alterations (e.g., variations in the size, dimensions, structure, shape and proportion of the various elements, installation arrangement, material use, color, orientation, etc.) will be conceived by those skilled in the art without actually departing from the scope and spirit of the claims.

[0027] Finally, it should be noted that the above embodiments are only preferred embodiments of this utility model and should not be used to limit the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A pump body safety operation device for a drainage pumping station, comprising a water tank (1); characterized in that: It also includes a float box (101) installed inside the water tank (1) and a cleaning assembly installed on the inner wall of the water tank (1); a control module (102) is fixedly connected to the bottom of the inner wall of the float box (101), a first groove (103) is opened through the upper end of the control module (102), a squeezing block (104) is slidably arranged on the inner wall of the first groove (103), a spring (105) is fixedly connected between the squeezing block (104) and the bottom of the inner wall of the first groove (103), a connecting contact point (106) is fixedly connected to the lower end of the squeezing block (104) and the bottom of the inner wall of the first groove (103), a guide rail (107) is fixedly connected to the upper end of the control module (102), and a gravity ball (108) is slidably arranged on the inner wall of the guide rail (107).

2. The safe operation device for the pump body of the drainage pumping station according to claim 1, characterized in that: The lower end of the top cover of the water tank (1) is fixed with a first connecting line (2), the lower end of the first connecting line (2) is fixed with a weight (3), and the lower end of the weight (3) is fixed with a second connecting line (4).

3. The safe operation device for the pump body of the drainage pumping station according to claim 2, characterized in that: The second connecting line (4) is fixed to the lower end of the floating box (101) at the end away from the weight (3). A submersible pump (5) is set on the left side of the water tank (1), and a cable (6) is fixed to the upper end of the submersible pump (5).

4. The safe operation device for the pump body of the drainage pumping station according to claim 3, characterized in that: The submersible pump (5) has an outlet pipe (7) fixedly connected to its outer wall. The other end of the outlet pipe (7) is detachably connected to a first connecting pipe (8) via a flange. The other end of the first connecting pipe (8) is fixedly connected to the left end of the water tank (1).

5. The safe operation device for the pump body of the drainage pumping station according to claim 3, characterized in that: The submersible pump (5) has a protective mesh cover (9) on the outer wall of the water inlet end, and a fixing ring (10) is provided on the outer wall of the protective mesh cover (9). The fixing ring (10) is detachably connected by bolts.

6. The safe operation device for the pump body of the drainage pumping station according to claim 1, characterized in that: A base plate (11) is fixedly connected to the lower end of the water tank (1), and a centrifugal pump (12) is fixedly connected to the upper end of the base plate (11). A second connecting pipe (13) is fixedly connected between the centrifugal pump (12) and the inclined surface at the bottom of the water tank (1).

7. The safe operation device for the pump body of the drainage pumping station according to claim 1, characterized in that: The cleaning assembly includes a limiting plate (201) fixed to the inner wall of the water tank (1), a collection box (202) slidably disposed on the inner wall of the water tank (1), a drain pipe (203) fixed to the left end of the water tank (1), and a solenoid valve (204) disposed on the drain pipe (203).

Images