Lifting pump water filling device

Abstract

According to the lift pump irrigation device, the connecting pipe strides across the lift pump and is communicated with the water outlet pipe and the water inlet pipe in a striding mode, residual waste water in the water conveying pipe located at the high position is used for irrigating the pump cavity, and air in the pump cavity is squeezed by the residual waste water at the high position to emerge upwards through the one-way valve. The lifting pump cavity drainage device achieves full-closed irrigation and exhaust, does not add new water, reduces irrigation cost, is high in irrigation efficiency, does not have the risk of sewage overflow, saves energy and is environmentally friendly.

Description

Technical Field

[0001] This utility model relates to the field of booster pump water filling, and in particular to a booster pump water filling device. Background Technology

[0002] In many stages of wastewater treatment or industrial production, various types of booster pumps are commonly used to lift liquid materials. Common examples include low-energy centrifugal pumps, as well as magnetic pumps or self-priming pumps. The working principle of a booster pump is primarily to create a pressure difference to lift the liquid. However, regardless of the type of booster pump, the presence of air in the pump chamber can prevent the smooth lifting of liquid materials. This is because, while air rotates with the pump impeller, its compressibility prevents it from creating an effective pressure difference like liquid. Specifically, when the pump impeller rotates, it creates a vacuum between the pump inlet and the impeller center to draw in liquid. However, if air is present in the pump chamber, the rotation of the air cannot generate a sufficient pressure difference to draw in liquid, thus preventing the pump from operating normally.

[0003] To address the aforementioned problems, the traditional solution is to use a negative pressure priming tank to fill the pump body with water. Most projects design and install a negative pressure priming tank at the front end of the booster pump. However, due to the airtightness of the pipelines and the tank itself, in actual operation, it is still necessary to frequently fill the tank with tap water to expel air from the pump chamber before materials can be successfully lifted. Therefore, using a negative pressure priming tank requires a large volume of water, and the vent valve on the top of the tank must be opened during filling, resulting in some wastewater flowing through the vent valve into the ground-level containment embankment. Furthermore, vertical negative pressure tanks are generally quite tall, and the valve between the tank and the pool must be closed during filling; otherwise, the filled water will flow back into the wastewater pool, failing to completely purge air from the priming tank and the booster pump chamber, leading to lifting failure. Repeated filling is required until all air is expelled from the pump chamber before successful lifting can proceed.

[0004] The above method of filling the booster pump with water to remove air from the pump chamber has several drawbacks: sewage overflows from the negative pressure water tank and flows to the ground; the cost of filling the pump is high; and the clean water that is filled in turns into sewage, increasing the cost of treatment. Utility Model Content

[0005] Therefore, there is a need to provide a booster pump water filling device to solve the problems of existing technologies that use water to fill the booster pump and remove air from the pump chamber, resulting in sewage overflowing from the negative pressure water tank and flowing to the ground, high water filling costs, and the filling of clean water turning into sewage, which increases treatment costs everywhere.

[0006] To achieve the above objectives, this utility model provides a booster pump water filling device, including a booster pump, an outlet pipe, an inlet pipe, and a connecting pipe. One end of the connecting pipe is connected to the outlet pipe, and the other end is connected to the inlet pipe. One end of the outlet pipe is connected to a high-level water supply pipe, and the other end is connected to the outlet of the booster pump. One end of the inlet pipe is connected to a low-level water tank, and the other end is connected to the inlet of the booster pump. A water filling valve is provided on the connecting pipe. An outlet valve is provided above the connection point between the outlet pipe and the connecting pipe, and a one-way valve is provided below it. The flow direction of the one-way valve is from bottom to top.

[0007] Furthermore, it also includes a reducing tee fitting, wherein the reducing tee fitting is provided at the connection between the connecting pipe and the outlet pipe and at the connection between the connecting pipe and the inlet pipe, and the reducing end of the reducing tee fitting is connected to the connecting pipe.

[0008] Furthermore, it also includes a bottom valve, which is located at the inlet end of the water inlet pipe.

[0009] Furthermore, the booster pump is a centrifugal pump, a magnetic pump, or a self-priming pump.

[0010] Furthermore, the water filling valve and the water outlet valve are respectively one of a gate valve, a stop valve, or a ball valve.

[0011] Furthermore, the two non-reducing ports of the reducing tee fitting are fixedly connected to the connecting pipe and the outlet pipe via flange structures.

[0012] Furthermore, it also includes a pressure gauge, which is located at the outlet of the booster pump.

[0013] Furthermore, it also includes a vacuum gauge, which is located at the inlet of the booster pump.

[0014] Unlike existing technologies, the above-mentioned technical solution uses a connecting pipe to cross the booster pump, connecting it to both the outlet and inlet pipes. It utilizes the residual wastewater in the elevated water pipe to fill the pump chamber. The air in the pump chamber is squeezed upwards by the residual wastewater at the higher position and escapes through a one-way valve, thus completing the drainage of the booster pump chamber. This achieves fully enclosed filling and venting, with no additional water consumption, reducing filling costs, high filling efficiency, no risk of sewage overflow, and energy saving and environmental protection. Attached Figure Description

[0015] Figure 1 This is a structural diagram of a booster pump irrigation device according to a specific embodiment;

[0016] Figure 2 A structural diagram of a booster pump irrigation device with a reducing tee fitting, as described in a specific embodiment;

[0017] Figure 3 A structural diagram of a booster pump irrigation device with a bottom valve, as described in a specific embodiment;

[0018] Figure 4 A structural diagram of a booster pump irrigation device equipped with a pressure gauge, as described in a specific embodiment;

[0019] Figure 5 The diagram shows the structure of a booster pump priming device with a vacuum gauge, as described in a specific embodiment.

[0020] Explanation of reference numerals in the attached figures:

[0021] 10. Booster pump;

[0022] 11. Water outlet pipe;

[0023] 12. Water inlet pipe;

[0024] 13. Connecting pipe;

[0025] 14. Water supply pipe;

[0026] 21. Water filling valve;

[0027] 22. Water outlet valve;

[0028] 23. Check valve;

[0029] 30. Reducing tee fittings;

[0030] 24. Foot valve;

[0031] 40. Pressure gauge;

[0032] 50. Vacuum gauge. Detailed Implementation

[0033] To explain in detail the technical content, structural features, objectives, and effects of the technical solution, the following description is provided in conjunction with specific embodiments and accompanying drawings.

[0034] In this document, the term "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this application, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0035] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit this application.

[0036] In the description of this application, the term "and / or" is used to describe the logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and A and B exist simultaneously. Additionally, the character " / " in this document generally indicates that the preceding and following objects have an "or" logical relationship.

[0037] In this application, terms such as “first” and “second” are used only to distinguish one entity or operation from another, and do not necessarily require or imply any actual quantity, hierarchy or order relationship between these entities or operations.

[0038] Unless otherwise specified, the use of terms such as “comprising,” “including,” “having,” or other similar expressions in this application is intended to cover non-exclusive inclusion, which does not exclude the presence of additional elements in a process, method, or product that includes the stated elements, such that a process, method, or product that includes a list of elements may include not only those defined elements but also other elements not expressly listed, or elements inherent to such a process, method, or product.

[0039] Similar to the understanding in the Examination Guidelines, in this application, expressions such as "greater than," "less than," and "exceeding" are understood to exclude the stated number; expressions such as "above," "below," and "within" are understood to include the stated number. Furthermore, in the description of the embodiments in this application, "multiple" means two or more (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups" and "multiple times," unless otherwise explicitly specified.

[0040] In the description of the embodiments of this application, the space-related expressions used, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or drawings. They are only for the purpose of describing the specific embodiments of this application or for the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0041] Unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," "fixing," and "setting," as used in the description of the embodiments of this application, should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components or the interaction between two components. For those skilled in the art to which this application pertains, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0042] In existing technologies, a negative pressure priming tank is typically used to remove air from the pump chamber of a booster pump. Its working principle is as follows: Before the pump starts, the vacuum priming tank (negative pressure tank) is filled with water. When the pump starts, it first draws water from the vacuum tank, causing the liquid level to drop and creating a vacuum with a pressure lower than the atmospheric pressure at the water surface. At this time, water enters the vacuum tank through the suction pipe. When the pump's discharge and the suction pipe's inflow reach equilibrium, the liquid level in the vacuum tank stops dropping, and the pump reaches its rated operating state, continuously delivering water. After the pump stops, the water in the drain pipe flows back into the vacuum tank, completing the pre-start priming process, eliminating the need for repriming. However, in actual use, problems may arise due to the sealing of the pipeline or the vacuum priming tank itself, leading to unstable air venting and increased costs.

[0043] Please see Figures 1 to 5 This embodiment provides a water filling device for a booster pump 10, including a booster pump 10, an outlet pipe 11, an inlet pipe 12, and a connecting pipe 13. One end of the connecting pipe 13 is connected to the outlet pipe 11, and the other end is connected to the inlet pipe 12. One end of the outlet pipe 11 is connected to a high-level water supply pipe 14, and the other end is connected to the outlet of the booster pump 10. One end of the inlet pipe 12 is connected to a low-level water tank, and the other end is connected to the inlet of the booster pump 10. A water filling valve 21 is provided on the connecting pipe 13. An outlet valve 22 is provided above the connection point between the outlet pipe 11 and the connecting pipe 13, and a one-way valve 23 is provided below it. The flow direction of the one-way valve 23 is from bottom to top.

[0044] The booster pump 10 can be a centrifugal pump. The working principle of a centrifugal pump is that the high-speed rotation of the impeller generates centrifugal force, throwing the liquid from the center of the impeller to the edge. The liquid's kinetic energy is converted into static pressure energy through the diffusion channel of the pump casing, thus achieving liquid transport. Its advantages include simple structure, fewer parts, low failure rate, durability, low maintenance costs, convenient management, and reliable operation. Furthermore, the output of the centrifugal pump can be arbitrarily adjusted via the discharge valve, even completely closed, without the risk of unlimited head increase. For high-flow, low-head transport requirements, centrifugal pumps are an ideal choice.

[0045] The booster pump 10 can also be a magnetic pump. The working principle of a magnetic pump utilizes the property that a magnetic field can penetrate air gaps and non-magnetic materials. An electric motor drives an outer magnetic rotor to rotate, and the magnetic field drives an inner magnetic rotor connected to the impeller to rotate synchronously, achieving contactless power transmission and converting dynamic seals into static seals. The advantage of magnetic pumps is that they completely solve the problems of leaks and spills, eliminating the safety hazards of flammable, explosive, toxic, and harmful media leaking through the pump seal, effectively ensuring employee health and production safety.

[0046] The booster pump 10 can also be a self-priming pump. The working principle of a self-priming pump is to draw water in through the suction inlet, then transport the liquid to the outer edge of the impeller through rapid rotation, and finally discharge the liquid medium out of the pump through vacuum suction at the discharge outlet. The advantages of a self-priming pump include strong suction, convenient operation, stable operation, and easy maintenance and disassembly. Once filled with sufficient water for initial use, a self-priming pump can achieve a lifetime of self-priming performance, and it does not require a foot valve 24 in the pipeline; only a certain amount of priming liquid needs to be stored in the pump body before operation. Self-priming pumps are particularly suitable for applications requiring self-priming capability, such as liquid transportation when the liquid level is below the pump's suction inlet.

[0047] The connecting pipe 13, inlet pipe 12, outlet pipe 11, and water delivery pipe 14 can all be made of metal or plastic. Common plastic materials include UPVC (unplasticized polyvinyl chloride), PPR (polypropylene random copolymer), and PE (polyethylene). The pipe diameter is usually determined based on the flow rate and head requirements of the booster pump 10. The selection of the pipe diameter needs to consider the flow rate of the liquid being transported, the resistance loss of the pipeline, and the operating pressure of the system. For example, some water pump pipe diameter and flow rate comparison tables provide reference values ​​for flow rates corresponding to different pipe diameters, such as a DN100mm pipe corresponding to approximately 200m³ / h. 3 The flow rate is [number] / h. In practical applications, the selection of pipe diameter also needs to be combined with specific engineering requirements and pump performance parameters to ensure efficient and safe operation of the system.

[0048] The water filling valve 21 and the water outlet valve 22 are respectively one of the gate valve, stop valve or ball valve.

[0049] Gate valves have a relatively simple structure, mainly composed of a valve body, valve seat, valve stem, gate, valve cover, and sealing rings. Their working principle involves the valve stem driving the gate to move linearly up and down along the valve seat to control the flow of fluid. The advantages of gate valves include low flow resistance, low opening and closing torque, easier opening and closing, and unrestricted medium flow direction, without turbulence or pressure reduction.

[0050] In a gate valve, the valve stem axis is perpendicular to the valve seat sealing surface. Its working principle relies on rotating the valve stem to open or close the valve. The advantages of gate valves include simple structure, ease of manufacturing and maintenance; short working stroke and short opening / closing time; good sealing performance, low friction between sealing surfaces, and long service life.

[0051] A ball valve is a valve whose opening and closing element is a sphere. The sphere rotates around the center line of the valve body to open and close the valve. Advantages of ball valves include low flow resistance, simple structure, small size, and light weight; the sealing surface material is made of plastic, ensuring good sealing performance; easy operation, rapid opening and closing, and convenient remote control; and easy maintenance, as the sealing rings are generally movable, making disassembly and replacement convenient.

[0052] The usage process of this embodiment is as follows: 1. Open the outlet valve 22 and the filling valve 21, so that the wastewater in the water supply pipe 14 flows downward from a high position (because in the current design standard, the water supply pipe 14 needs to run through the pipe gallery cable tray, that is, there is an absolute height difference between the water supply pipe 14 and the lift pump 10. After the lift pump 10 is shut down, the wastewater remaining in the water supply pipe 14 flows back to the outlet pipe 11. Because the outlet pipe 11 is equipped with a one-way valve 23, the remaining wastewater cannot flow into the pump chamber by itself). 2. After the wastewater passes through the filling pipe, it first flows towards the bottom valve 24 in the inlet pipe 12, filling this section of the inlet pipe 12. 3. After filling the section of the inlet pipe 12 towards the bottom valve 24, the wastewater will flow towards the other section, namely the lift pump 10, and squeeze the air in the pump chamber upward. The air will then escape upward after passing through the one-way valve 23, and the air in the pump chamber will be filled with wastewater. The filling and air venting are completed.

[0053] This new invention uses a connecting pipe 13 to span the lift pump 10, connecting to the outlet pipe 11 and the inlet pipe 12 respectively. It uses the residual wastewater in the high-level water supply pipe 14 to fill the pump chamber. The air in the pump chamber is squeezed by the residual wastewater at the high level and then escapes upward through the one-way valve 23, completing the drainage of the lift pump 10's pump chamber. This achieves fully enclosed filling and venting, with no additional water consumption, reducing filling costs. Furthermore, it has high filling efficiency, no risk of sewage overflow, and is energy-saving and environmentally friendly.

[0054] Since smaller diameter irrigation pipes can be used, in some embodiments, a reducing tee fitting 30 is included to accommodate smaller diameter irrigation pipes. The reducing tee fitting 30 is provided at the connection points of the connecting pipe 13 and the outlet pipe 11, and at the connection points of the connecting pipe 13 and the inlet pipe 12. The reducing end of the reducing tee fitting 30 is connected to the connecting pipe 13. By dividing a pipe into two branches of different diameters or merging two pipes of different diameters into one pipe, the piping system is simplified and space is saved. This structural design allows for smooth fluid flow, reduces pressure loss, and improves delivery efficiency. Furthermore, the two non-reducing ports of the reducing tee fitting 30 are fixedly connected to the connecting pipe 13 and the outlet pipe 11 via flange structures. The flange structure consists of a pair of flanges, a gasket, and several bolts and nuts. The principle of flange connection is to place a gasket between the sealing surfaces of two flanges. Tightening the nuts creates pressure on the gasket surface, causing it to deform and fill the unevenness of the sealing surfaces, thus achieving a tight, leak-proof connection. The advantages of flange structures include good strength and sealing performance, simple structure, low cost, repeated disassembly and reassembly, and wide application range. Furthermore, flange connections are convenient to use and can withstand high pressures. Depending on the pressure rating, flange gaskets are made of different materials, ranging from low-pressure asbestos gaskets and high-pressure asbestos gaskets to metal gaskets.

[0055] In some embodiments, a bottom valve 24 is also included, which is disposed at the inlet end of the water inlet pipe 12. The inlet end of the water inlet pipe 12 is located at the bottom of the water tank. The bottom valve 24 can be a lift-type bottom valve 24, a swing-type bottom valve 24, or a surface-mounted bottom valve 24, etc. The bottom valve 24 can prevent air intake, reduce water hammer effect, and prevent debris from entering, protecting the lift pump 10 from damage.

[0056] Furthermore, a pressure gauge 40 is included, which is located at the outlet of the booster pump 10. The pressure gauge 40 can be a U-shaped pressure gauge 40, a digital pressure gauge 40, etc. The working principle of using the pressure gauge 40 to monitor whether the air inside the booster pump 10 has been completely removed is that the pressure change at the pump outlet is measured to determine whether the air inside the pump has been completely removed. When the pump is full of liquid, the pressure gauge 40 will display a stable reading; if there is air inside the pump, the liquid flow will fluctuate due to the presence of air, causing the pressure gauge 40 reading to be unstable. By observing the changes in the pressure gauge 40 reading, it can be determined whether the air inside the pump has been completely removed. If the pressure displayed by the pressure gauge 40 is stable, it indicates that the air inside the pump has been removed; if the pressure gauge 40 reading fluctuates significantly, it may mean that there is still air inside the pump that needs to be further removed. The pressure gauge 40 can specifically determine the remaining air in the pump chamber, facilitating the judgment of the next step of operation and improving work efficiency.

[0057] Furthermore, a vacuum gauge 50 is included, which is installed at the inlet of the booster pump 10. When the booster pump 10 starts, the internal pressure of the pump changes. If air is present in the pump, it will cause the pressure at the pump inlet to decrease, creating a negative pressure state. The vacuum gauge 50 can measure this negative pressure, i.e., the pressure value less than atmospheric pressure. If the air inside the pump is completely expelled, a stable vacuum state will be formed at the pump inlet, and the reading of the vacuum gauge 50 will stabilize at a low negative pressure value. If the air inside the pump is not completely expelled, the reading of the vacuum gauge 50 will fluctuate or fail to stabilize at a low negative pressure value because the presence of air will interfere with the formation of a stable vacuum environment inside the pump. By observing the changes in the reading of the vacuum gauge 50, the operator can determine whether the air inside the pump has been expelled. If the reading is stable and reaches the expected negative pressure value, it indicates that the air has been expelled; if the reading fluctuates or fails to reach the expected negative pressure value, it may mean that there is still air inside the pump that needs to be further expelled. The vacuum gauge 50 allows for quick determination of whether there is air in the pump chamber, thereby enabling venting operations and improving work efficiency.

[0058] It should be noted that although the above embodiments have been described herein, this does not limit the scope of patent protection for this utility model. Therefore, any changes and modifications made to the embodiments described herein based on the innovative concept of this utility model, or equivalent structural or procedural transformations made using the content of this utility model's specification and drawings, directly or indirectly applying the above technical solutions to other related technical fields, are all included within the scope of protection of this utility model patent.

Claims

1. A booster pump irrigation device, characterized in that: The system includes a booster pump, an outlet pipe, an inlet pipe, and a connecting pipe. One end of the connecting pipe is connected to the outlet pipe, and the other end is connected to the inlet pipe. One end of the outlet pipe is connected to a high-level water supply pipe, and the other end is connected to the outlet of the booster pump. One end of the inlet pipe is connected to a low-level water tank, and the other end is connected to the inlet of the booster pump. A filling valve is provided on the connecting pipe. The outlet pipe has an outlet valve above its connection with the connecting pipe, and a one-way valve below it, with the flow direction of the one-way valve being from bottom to top.

2. The booster pump irrigation device according to claim 1, characterized in that: It also includes a reducing tee fitting, wherein the reducing tee fitting is provided at the connection between the connecting pipe and the outlet pipe and at the connection between the connecting pipe and the inlet pipe, and the reducing end of the reducing tee fitting is connected to the connecting pipe.

3. The booster pump irrigation device according to claim 1, characterized in that: It also includes a bottom valve, which is located at the inlet end of the inlet pipe.

4. The booster pump irrigation device according to claim 1, characterized in that: The booster pump is a centrifugal pump, a magnetic pump, or a self-priming pump.

5. The booster pump irrigation device according to claim 1, characterized in that: The water filling valve and the water outlet valve are respectively one of the gate valve, stop valve or ball valve.

6. The booster pump irrigation device according to claim 2, characterized in that: The two non-reducing ports of the reducing tee fitting are fixedly connected to the connecting pipe and the outlet pipe via flange structures.

7. The booster pump irrigation device according to claim 1, characterized in that: It also includes a pressure gauge, which is located at the outlet of the booster pump.

8. The booster pump irrigation device according to claim 1, characterized in that: It also includes a vacuum gauge, which is located at the inlet of the booster pump.

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