Water pump starting device and quick starting water pump

Abstract

This utility model discloses a water pump starting device and a rapid-start water pump, belonging to the field of water pump technology. The water pump starting device includes a side valve body, a flow channel, a valve disc, and a valve disc counterweight block disposed on the valve disc. The water inlet end of the side valve body is provided with a water supply flange connected to the submersible feed pump, and the water outlet end is connected to the flow channel through a connecting flange. The flow channel is connected to the centrifugal pump suction pipe through upper and lower flanges respectively. The valve disc is hinged to the flow channel through a pin. The valve disc counterweight block is disposed on the side of the valve disc near the submersible feed pump. By adjusting its length, weight, and installation position, the opening and closing torque of the valve disc can be adjusted, so that the valve disc can automatically close the lower suction channel and complete the filling and venting of the upper suction pipe during the start-up phase, realizing the rapid start-up of the centrifugal pump. This utility model has a simple structure, does not require manual pump priming or vacuum auxiliary equipment, starts quickly, has high water suction efficiency, strong operational reliability, and is suitable for various working conditions.

Description

Technical Field

[0001] This utility model relates to the field of water pump technology, and in particular to a water pump starting device and a fast-start water pump. Background Technology

[0002] Water pumps, as essential equipment in water supply and drainage systems, are widely used in residential life, industrial production, and municipal facilities. my country has over ten million installed water pumps, with submersible centrifugal pumps accounting for more than 90% of these.

[0003] Currently, most centrifugal pumps employ either vacuum priming or water filling starting methods. However, vacuum priming requires a vacuum device and complex piping, electrical control, and detection systems. Its disadvantages include long start-up time, high noise levels, system complexity, and a high failure rate. If there is leakage in the shaft seal or piping, a secondary start-up may be necessary, severely impacting operational reliability. Water filling starting requires a foot valve at the suction port. This foot valve not only increases suction resistance and reduces suction efficiency but also limits the pump's suction height, easily leading to cavitation and affecting the pump's lifespan and stability.

[0004] Both of the above methods are cumbersome to operate and inefficient. Therefore, how to provide a simple and efficient water pump starting device and a quick-start water pump has become an urgent problem to be solved in the existing technology. Utility Model Content

[0005] One of the technical problems to be solved by this utility model embodiment is to provide a water pump starting device that is simple to operate and highly efficient, and a water pump that can start quickly is a problem that needs to be solved in the prior art.

[0006] To address the aforementioned scenarios, in a first aspect, embodiments of this application provide a water pump starting device, comprising: a side valve body 404, a flow channel 407, a valve disc 406, and a valve disc counterweight 4061 disposed on the valve disc 406.

[0007] The inlet end of the side valve body 404 is connected to the submersible feed pump, and the outlet end is connected to the flow fluid 407.

[0008] The fluid 407 is connected to the suction pipe of the centrifugal pump, and the fluid 407 has a first pin hole 4074 on the side near the valve body.

[0009] The lower end of the valve disc 406 is provided with a second pin hole 4065, which is slidably connected to the first pin hole 4074 of the fluid passage 407 via a pin 408;

[0010] The valve disc counterweight 4061 is located on the side of the valve disc 406 near the submersible water pump. The length, weight, and position of the valve disc counterweight 4061 are set according to the parameters of the fluid 407.

[0011] In conjunction with the first aspect, some implementations also include:

[0012] The side valve body 404 has a water supply flange 4041 at the water inlet end, which is used to connect with the water outlet flange of the submersible water pump; the water outlet end has a first connecting flange 4044, which is used to connect with the second connecting flange 4072 of the fluid 407.

[0013] The fluid 407 is also provided with an upper flange 4073 and a lower flange 4071, which are respectively connected to the suction pipe of the centrifugal pump. The fluid 407 is provided with a first pin hole 4074 on the side near the side valve body.

[0014] In conjunction with the first aspect, some embodiments further include:

[0015] The valve disc counterweight 4061 is located in the lower half of the valve disc 406.

[0016] When the valve disc 406 is opened to an angle range of 60° to 70° relative to the fourth annular sealing surface 4075 of the fluid 407, the valve disc counterweight 4061 causes the valve disc 406 to close under the action of gravity.

[0017] The force generated by the valve disc counterweight 4061 causes the first annular sealing surface 4062 of the valve disc 406 to come into contact with the second annular sealing surface 4045 of the side valve body 404.

[0018] In conjunction with the first aspect, some implementations also include:

[0019] When the valve disc 406 is closed relative to the fourth annular sealing surface 4075 of the fluid 407, the third annular sealing surface 4063 of the valve disc 406 comes into contact with the fourth annular sealing surface 4075 of the fluid 407.

[0020] In conjunction with the first aspect, some embodiments further include: a wire rope 402, a fixed pulley 403, and a hanging counterweight 401.

[0021] One end of the wire rope 402 is connected to the valve disc 406, and the other end is connected to the suspended counterweight 401 via the fixed pulley 403.

[0022] In conjunction with the first aspect, in some embodiments, the vertical counterweight 401 is suspended by a steel wire rope 402 via a fixed pulley 403, and the vertical counterweight 401 moves in a vertical direction, which is used for the space-constrained structure of the side valve body 404.

[0023] In conjunction with the first aspect, some implementations include:

[0024] The side valve body 404 consists of a vertical section and a horizontal section. The vertical section is the water supply chamber 4042, which is connected to the water supply flange 4041 below. The inner diameter of the lower section of the water supply chamber 4042 is smaller than the inner diameter of the upper section. The horizontal section is used to connect the fluid 407 and the pulley installation area to form a fluid diversion channel.

[0025] The vertical counterweight 401 is located inside the straight pipe section of the side valve body 404. It is a cylindrical structure. The diameter of the cylindrical part of the counterweight 401 is smaller than the inner diameter of the lower section of the water supply chamber 4042, so that the vertical counterweight 401 can move up and down within the straight pipe section.

[0026] When the submersible water pump is running, the suspended counterweight 401 rises to the upper part of the water supply chamber 4042;

[0027] When the submersible water pump is not running, the suspended counterweight 401 falls under the action of gravity, and the cylindrical part of the suspended counterweight 401 falls back into the lower straight pipe of the side valve body 404.

[0028] In conjunction with the first aspect, some implementations include:

[0029] A pulley mounting hole 4043 is provided on the top of the side valve body 404 for mounting a fixed pulley 403;

[0030] The position of the pulley mounting hole 4043 corresponds to the wire rope path of the vertical counterweight 401, so that the wire rope can rotate smoothly along the pulley.

[0031] In conjunction with the first aspect, some implementations include:

[0032] A sealing structure 405 is provided on the outside of the pulley mounting hole 4043 to seal the pulley mounting hole 4043 and prevent water leakage.

[0033] Secondly, embodiments of this application provide a quick-start water pump, comprising: a submersible feed pump 2, a water pump starting device 4 as described above, an upper suction pipe 3, a lower suction pipe 6, a centrifugal pump 5, and a filter screen 7; wherein, the outlet of the submersible feed pump 2 is connected to the water supply flange 4041 of the inlet of the water pump starting device 4, the upper flange 4073 of the outlet of the water pump starting device 4 is connected to the upper suction pipe 3, the lower flange 4071 is connected to the lower suction pipe 6, and the upper suction pipe 3 is connected to the inlet of the centrifugal pump 5.

[0034] This utility model provides a water pump starting device and a rapid-start water pump, effectively solving the engineering problems of existing centrifugal pumps, such as the need for manual priming, complex operation, low starting efficiency, and susceptibility to cavitation. The device employs a valve disc counterweight and a gravity self-resetting structure, enabling the valve disc to automatically fall back and close the lower suction pipe within a 60°–70° angle range during the starting phase. This achieves rapid water filling and air venting of the upper suction section, preventing air retention and improving the reliability of the centrifugal pump's start-up. Multi-stage annular sealing surfaces are used for opening and closing, preventing negative pressure air intake. Furthermore, a mechanical auxiliary mechanism involving wire ropes, fixed pulleys, and a suspended counterweight is introduced, making valve opening and closing easier, especially suitable for complex working conditions with large diameters, high suction lifts, or limited installation space. The side valve body adopts a vertical and horizontal combined structure, allowing the suspended counterweight to achieve linear guided movement within the water supply chamber. The structure is compact, highly adaptable, and avoids the external space occupied by an extended counterweight. This invention enables centrifugal pumps to automatically start with water without the need for vacuum priming equipment. The entire startup process is automatically controlled, ensuring stable and reliable operation and significantly improving startup efficiency. It has advantages such as strong engineering applicability, simple maintenance, and reasonable structure, and is widely applicable to industrial water supply, river water intake, farmland irrigation, municipal pumping stations, and mine drainage.

[0035] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0036] The accompanying drawings, which form part of this specification, illustrate embodiments of the present invention and, together with the description, serve to explain the principles of the present invention.

[0037] The present invention can be more clearly understood with reference to the accompanying drawings and the following detailed description, wherein:

[0038] Figure 1 This diagram shows a cross-sectional view of a water pump starting device according to an embodiment of the present invention.

[0039] Figure 2 This diagram shows a cross-sectional view of a water pump starting device according to another embodiment of the present invention.

[0040] Figure 3 This is a cross-sectional structural diagram of a water pump starting device according to another embodiment of the present invention;

[0041] Figure 4 This is an enlarged cross-sectional view of the side valve body of a water pump starting device according to another embodiment of the present invention;

[0042] Figure 5 This is an enlarged cross-sectional view of the valve disc structure of a water pump starting device according to another embodiment of the present invention;

[0043] Figure 6This is a front view of the valve disc of a water pump starting device according to another embodiment of the present invention;

[0044] Figure 7 This is an enlarged cross-sectional view of the fluid flow structure of a water pump starting device according to another embodiment of the present invention;

[0045] Figure 8 This diagram shows a structural diagram of a quick-start water pump according to another embodiment of the present invention;

[0046] Figure 9 This diagram shows the structure of a quick-start water pump according to one embodiment of the present invention. Detailed Implementation

[0047] The present application will be further described below with reference to specific embodiments and accompanying drawings. It is understood that the illustrative embodiments of this disclosure include, but are not limited to, related methods, devices, and systems. The specific embodiments described herein are merely for explaining the present application and not for limiting it. Furthermore, for ease of description, the accompanying drawings show only the parts relevant to the present application, and not all of the structures or processes.

[0048] The following specific embodiments illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. Although the description of this application is presented in conjunction with preferred embodiments, this does not mean that the features of this utility model are limited to this embodiment. On the contrary, the purpose of describing the utility model in conjunction with embodiments is to cover other options or modifications that may be derived based on the claims of this application. To provide a thorough understanding of this application, many specific details will be included in the following description. This application may also be implemented without using these details. Furthermore, to avoid confusion or obscuring the focus of this application, some specific details will be omitted in the description. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.

[0049] Figure 1 This diagram shows a cross-sectional view of a water pump starting device according to an embodiment of the present invention. Figure 2 This diagram shows a cross-sectional view of a water pump starting device according to another embodiment of the present invention. Figure 3 This is a cross-sectional structural diagram of a water pump starting device according to another embodiment of the present invention; Figure 4 This is an enlarged cross-sectional view of the side valve body of a water pump starting device according to another embodiment of the present invention; Figure 5 This is an enlarged cross-sectional view of the valve disc structure of a water pump starting device according to another embodiment of the present invention; Figure 6 This is a front view of the valve disc of a water pump starting device according to another embodiment of the present invention; Figure 7This is an enlarged cross-sectional view of the fluid flow structure of a water pump starting device according to another embodiment of the present invention; Figure 8 This diagram shows a structural diagram of a quick-start water pump according to another embodiment of the present invention; Figure 9 This diagram illustrates the structure of a fast-start water pump according to one embodiment of the present invention. Figure 1-9 As shown, this utility model provides a water pump starting device, including: a side valve body 404, a flow channel 407, a valve disc 406, and a valve disc counterweight 4061 disposed on the valve disc 406. The side valve body 404 has a water supply flange 4041 at the water inlet end for connecting to the water outlet flange of the submersible water pump; the water outlet end has a first connecting flange 4044 for connecting to the second connecting flange 4072 of the flow channel 407; the flow channel 407 is also provided with an upper flange 4073 and a lower flange 4074. 071, respectively connected to the suction pipe of the centrifugal pump, the fluid 407 is provided with a first pin hole 4074 on the side near the valve body; the lower end of the valve disc 406 is provided with a second pin hole 4065, which is slidably connected to the first pin hole 4074 of the fluid 407 through a pin 408; the valve disc counterweight 4061 is set on the side of the valve disc 406 near the submersible feed pump, and the length, weight and position of the valve disc counterweight 4061 are set according to the parameters of the fluid 407.

[0050] Figure 2 A cross-sectional view of another design for a rapid start-up device for a centrifugal pump is shown, including a side valve body, a fluid passage, a valve disc, and a counterweight on the valve disc. This device is installed between the submersible feed pump and the centrifugal pump's suction pipe. It is used to rapidly fill and vent the upper suction pipe of the centrifugal pump during the submersible feed pump's water supply phase, and to promptly switch the fluid passage once the centrifugal pump is ready to operate. To ensure that the valve disc reliably falls back to close the lower suction pipe after opening to a certain angle, this embodiment parametrically designs the length, weight, and installation position of the valve disc counterweight based on the structural parameters of the fluid passage, the flow cross-section, and the pipeline pressure difference.

[0051] To ensure that the valve disc automatically retracts after opening to a certain angle during water supply from the submersible pump, closing the lower suction pipe and enabling water filling of the upper pipeline, the length, weight, and installation position of the valve disc counterweight were structurally optimized and parametrically designed. The structural parameters of the valve disc counterweight are adjustable within a certain range to meet the usage requirements of different pipe diameter systems.

[0052] Furthermore, considering the possibility of on-site counterweight fine-tuning during installation and commissioning, this embodiment has three radially distributed mounting holes on the valve disc for installing ±0.2kg fine-tuning counterweights. By changing the height of the counterweight installation position or adding fine-tuning counterweights, this embodiment can adapt to different head and different submersible feed pump water flow rates, ensuring that the valve disc has stable automatic return characteristics within the 60° to 70° angle range, thereby ensuring the reliability of the start-up process. This design not only achieves a balance between structural parameters and fluid characteristics but also improves the adaptability of the device to different pump systems.

[0053] In one embodiment, a valve disc counterweight 4061 is disposed on the lower half of the valve disc 406. When the valve disc 406 is opened to an angle range of 60° to 70° relative to the fourth annular sealing surface 4075 of the fluid 407, the valve disc counterweight 4061 causes the valve disc 406 to close under the action of gravity. The force generated by the valve disc counterweight 4061 causes the first annular sealing surface 4062 of the valve disc 406 to contact the second annular sealing surface 4045 of the side valve body 404. By disposing the valve disc counterweight 4061 on the lower half of the valve disc 406, the valve disc can automatically fall back and close under the action of gravity when it is opened to an angle range of 60° to 70° relative to the fourth annular sealing surface 4075 of the fluid 407 during the water supply stage of the submersible water pump. This achieves active cutoff of the lower suction pipe, allowing the upper suction pipe and centrifugal pump to quickly complete the water filling and venting process, thereby improving the pump start-up efficiency. At the same time, the force generated by the counterweight ensures that the first annular sealing surface 4062 of the valve disc and the second annular sealing surface 4045 of the side valve body are reliably fitted, effectively preventing backflow and cavitation, ensuring stable operation of the system during startup, and achieving the beneficial technical effects of simplified structure, reliable sealing and adaptive control.

[0054] In one embodiment, when the valve disc 406 is closed relative to the fourth annular sealing surface 4075 of the fluid 407, the third annular sealing surface 4063 of the valve disc 406 contacts the fourth annular sealing surface 4075 of the fluid 407. By setting the third annular sealing surface 4063, the valve disc 406 forms a reliable fit with the fourth annular sealing surface 4075 of the fluid 407 in the fully closed state, thereby achieving sealing protection for the lower suction channel. When the valve disc is closed, this sealing structure can not only effectively prevent backflow of water in the pipeline, but also prevent air from entering the suction section of the centrifugal pump, ensuring that the centrifugal pump maintains a stable liquid column during shutdown or switching phases, preventing cavitation due to water loss or difficulty in restarting. At the same time, the annular sealing surface adopts a circumferential contact form, with uniform force distribution and high sealing reliability, which can adapt to long-term start-stop cycle conditions, improve overall operational safety and device life, and further enhance the applicability and reliability of the pump starting device of this utility model under complex working conditions.

[0055] In one embodiment, the pump starting device further includes a wire rope 402, a fixed pulley 403, and a suspended counterweight 401. One end of the wire rope 402 is connected to the valve disc 406, and the other end is connected to the suspended counterweight 401 via the fixed pulley 403. By introducing the structure of the wire rope 402, fixed pulley 403, and suspended counterweight 401 into the pump starting device, the opening and closing process of the valve disc 406 not only relies on its own counterweight to achieve gravity-induced descent, but also utilizes the suspended counterweight to provide a stable and adjustable auxiliary torque, thus achieving controlled and flexible opening and closing. Compared with a single valve disc counterweight structure, this pulley-driven counterweight structure can significantly reduce the opening and closing resistance of the valve disc, enabling reliable closure even under low pressure differential conditions, and improving its applicability in large-diameter pipelines or in the transportation of solid-liquid media. Meanwhile, the weight of the suspended counterweight can be adjusted according to engineering requirements to achieve precise control over the valve disc closing angle, closing speed, and fluid switching timing, thereby effectively preventing water hammer and impact, improving system stability, and further enhancing the reliability and safety of the pump starting device under complex working conditions.

[0056] In one embodiment, the vertical counterweight 401 is suspended by a steel wire rope 402 and a fixed pulley 403. The vertical counterweight 401 moves vertically and is used in structures where the space of the side valve body 404 is limited. By adopting the arrangement of the vertical counterweight 401 suspended by the steel wire rope 402 and the fixed pulley 403, the counterweight structure can be arranged vertically, thus effectively solving the problem that traditional valve disc gravity balance structures cannot accommodate large-mass counterweights when the installation space of the side valve body 404 is limited. This design not only makes full use of the spare space above or to the side of the valve body to achieve a compact layout, but also allows for precise adjustment of the valve disc opening and closing torque by changing the weight of the vertical counterweight, making the device suitable for large-diameter pipelines or pump station projects with narrow installation space. In addition, the vertical counterweight movement trajectory is stable and does not interfere with the main fluid channel, avoiding affecting the flow performance. While ensuring structural compactness, it improves the system's versatility and engineering adaptability.

[0057] In one embodiment, the side valve body 404 is composed of a vertical section and a horizontal section. The vertical section is a water supply chamber 4042, which is connected to the water supply flange 4041 below. The inner diameter of the lower section of the water supply chamber 4042 is smaller than the inner diameter of the upper section. The horizontal section is used to connect the fluid 407 and the pulley installation area to form a fluid diversion channel. The hanging counterweight 401 is located in the straight pipe section of the side valve body 404 and is a cylindrical trapezoidal combination structure. The diameter of the cylindrical part of the valve disc counterweight 4061 is smaller than the inner diameter of the lower section of the water supply chamber 4042, so that the hanging counterweight 401 can move up and down in the straight pipe section. When the submersible water pump is running, the hanging counterweight 401 rises to the upper large part of the water supply chamber 4042. When the submersible water pump is not running, the hanging counterweight 401 falls under the action of gravity, and the cylindrical part of the hanging counterweight 401 falls back to the lower straight pipe section of the side valve body 404. By designing the side valve body 404 as a combination of vertical and horizontal sections, not only is the water supply guidance function of the submersible feed pump realized, but a reasonable arrangement space is also provided for the vertical counterweight mechanism. The vertical section forms the water supply chamber 4042, whose segmented inner diameter design creates an expansion buffer space in the upper section and a counterweight guide chamber in the lower section, allowing the vertical counterweight block 401 to move smoothly in a straight line without swaying or shifting during operation. When the submersible feed pump is running, it pushes water into the water supply chamber, creating an upward flow that causes the vertical counterweight block to automatically rise to the upper chamber, thus releasing the pipeline passage. When the submersible feed pump stops or the centrifugal pump suction weakens, the vertical counterweight block falls back into the lower straight pipe under gravity, causing the valve disc to close, achieving a self-resetting function. This structure cleverly integrates water supply guidance and mechanical balance control functions, achieving automatic control during the pump start-up phase without increasing additional installation space. It is compact, stable in operation, and has good engineering applicability and ease of installation.

[0058] In one embodiment, a pulley mounting hole 4043 is provided on the top of the side valve body 404 for mounting a fixed pulley 403. The position of the pulley mounting hole 4043 corresponds to the wire rope path of the suspended counterweight 401, allowing the wire rope to rotate smoothly along the pulley. By providing a pulley mounting hole 4043 on the top of the side valve body 404, a reasonable layout of the fixed pulley 403 within the device is achieved, making the force transmission path between the wire rope 402 and the suspended counterweight 401 more linear and smooth. This structure not only avoids the problem of traditional external pulleys occupying additional installation space, but also reduces wear and energy loss caused by deflection of the wire rope during operation, ensuring that it can rotate smoothly along the pulley, thereby maximizing force transmission efficiency. At the same time, the precise correspondence between the position of the pulley mounting hole and the wire rope path ensures good alignment performance of the transmission system, effectively reducing operating noise and mechanical vibration, improving the operational reliability and service life of the entire water pump starting device, and providing a stable structural foundation for the suspended counterweight type opening and closing control.

[0059] In one embodiment, a sealing structure 405 is provided outside the pulley mounting hole 4043 to seal the pulley mounting hole 4043.

[0060] The water pump starting device provided in this embodiment of the utility model achieves a synergistic effect of structural self-balancing opening and closing and automatic control by introducing a valve disc counterweight, a wire rope pulley system, and a hanging counterweight mechanism into the side valve body, flow channel, and valve disc structure. Specifically, the valve disc counterweight is located in the lower half of the valve disc, allowing the valve disc to automatically fall back and close under gravity. This effectively ensures timely shut-off of the lower suction pipe during the starting phase, preventing backflow and air from entering the centrifugal pump's suction section, ensuring the centrifugal pump quickly establishes a liquid seal, and improving starting efficiency and reliability. Simultaneously, its cooperation with the first, second, and third annular sealing surfaces ensures a sealing effect in the on / off state, enhancing negative pressure resistance and backflow prevention performance. Furthermore, by introducing an auxiliary torque adjustment mechanism through a combination structure of wire rope, fixed pulley, and vertical counterweight, not only is the valve disc opening and closing resistance reduced, ensuring reliable operation even under low differential pressure conditions, but precise control of the closing angle and response time is also achieved, reducing water hammer impact and improving system operational stability. The vertical counterweight layout, moving along the vertical direction, solves the problem of difficulty in arranging counterweights in traditional structures with limited installation space, enhancing the adaptability of the device in complex engineering environments such as large pump stations and confined installation spaces. Simultaneously, by setting pulley mounting holes and a sealing structure, the pulley transmission system is compactly integrated into the side valve body, achieving smooth force transmission, preventing wire rope wear, and ensuring reliable overall sealing of the device, eliminating the risk of leakage caused by structural openings. In summary, this utility model has a reasonable structural design, safe and reliable operation, strong installation adaptability, flexible control, and convenient maintenance, significantly improving the rapid start-up performance and engineering application value of the pump system.

[0061] like Figure 8 , 9 As shown, this utility model also provides a quick-start water pump, including: a submersible water pump 2, a water pump starting device 4 as described above, an upper suction pipe 3, a lower suction pipe 6, a centrifugal pump 5, and a filter screen 7; wherein, the outlet of the submersible water pump 2 is connected to the water supply flange 4041 of the inlet of the water pump starting device 4, the upper flange 4073 of the outlet of the water pump starting device 4 is connected to the upper suction pipe 3, the lower flange 4071 is connected to the lower suction pipe 6, and the upper suction pipe 3 is connected to the inlet of the centrifugal pump 5.

[0062] This embodiment combines the water pump starting device 4 with the submersible feed pump 2, the upper suction pipe 3, the lower suction pipe 6, and the centrifugal pump 5 to form a rapid-start water pump system. This enables the centrifugal pump to quickly establish starting conditions without manual priming or vacuum priming equipment. The submersible feed pump 2 provides initial water supply to the system, causing the water pump starting device to automatically close the lower suction pipe and fill and vent the upper suction section, effectively preventing problems such as dry running, cavitation, or difficulty in starting the centrifugal pump. Once the centrifugal pump enters stable operation, the water pump starting device automatically opens the lower suction channel, restoring the normal suction process and achieving continuous and stable operation of the centrifugal pump. Furthermore, the system has a compact structure and simple installation, making it suitable for applications such as mine drainage, river water intake, and industrial circulating cooling. It offers significant advantages such as fast start-up response, low energy consumption, high safety, and convenient maintenance, improving the starting efficiency and reliability of traditional centrifugal pumps under complex operating conditions and demonstrating significant engineering application value.

[0063] This utility model also provides a method for starting a water pump quickly, applicable to water pumps equipped with any of the above-described water pump starting devices, comprising: starting the submersible feed pump 2, supplying water to the water pump starting device 4, the valve disc 406 of the water pump starting device 4 rotating along the pin shaft 408, lowering the valve disc 406 to close the lower suction pipe 6, the centrifugal pump 5 and the upper suction pipe 3 being supplied with water and the air being purged; after the centrifugal pump 5 meets the starting conditions, starting the centrifugal pump 5; after the centrifugal pump 5 is running stably, the valve disc 406 opens the lower suction pipe 6 under the action of the suspended counterweight 401 or the valve disc counterweight 4061; and closing the submersible feed pump 2.

[0064] This invention provides a rapid-start pump method that achieves the technical effect of quickly establishing the starting conditions for a centrifugal pump without manual priming or vacuum priming equipment by employing a submersible feed pump for pre-supplying water and a pump starting device in coordinated control. During startup, the submersible feed pump first replenishes water to the system. The valve in the pump starting device automatically closes the lower suction pipe under the action of a counterweight mechanism, rapidly filling the upper suction pipe and the inside of the centrifugal pump with water and expelling air. This avoids the problem of dry running or startup failure caused by residual air in the pipeline, common in traditional centrifugal pumps. Once the centrifugal pump enters a stable operating phase, the valve automatically opens the lower suction pipe under the action of a suspended counterweight or a valve counterweight, restoring normal water intake and achieving a smooth transition from the startup phase to the operating phase. Furthermore, this method is simple to operate, highly automated, and improves the safety and reliability of the system startup.

[0065] In one embodiment, the quick-start valve comprises a side valve body, a fluid passage, a valve disc, and a pin. The side valve body has an inlet flange fixedly connected to the outlet flange of the submersible feed pump, and the outlet flange is fixedly connected to the intermediate flange of the fluid passage. The fluid passage has an intermediate flange fixedly connected to the outlet flange of the side valve body, and two horizontal flanges connected to the suction pipe flange of the centrifugal pump. The lower end of the fluid passage has an annular sealing surface that mates with the annular sealing surface of the valve disc, and the lower end of the fluid passage near the side valve body has a pin hole for sliding connection with the valve disc. The valve disc has an annular sealing surface and an annular ring on both sides. The lower end of the valve disc has a pin hole for sliding connection with the fluid passage, and a counterweight component is located on the upper part of the valve disc near the submersible feed pump.

[0066] There are two types of counterweight components: one is the counterweight iron (i.e., valve disc counterweight block), and the other is the suspended balance iron (i.e., suspended counterweight block). A. Counterweight iron (i.e., valve disc counterweight block): A balance iron is located on the lower half of the valve disc near the submersible feed pump side. When the valve disc opens upwards to a 60-70 degree angle with the fluid sealing surface, the counterweight iron (i.e., valve disc counterweight block), under the action of gravity, opens the valve disc annular sealing surface from the fluid annular sealing surface, ensuring that the centrifugal pump does not leak during operation. b. Suspended balance iron (i.e., suspended counterweight block): When the space in the side valve body is too small to install a balance iron, the suspended balance iron (i.e., suspended counterweight block) type is used. One end of the suspended balance iron (i.e., suspended counterweight block) is horizontally fixed to the valve disc, and the other end is vertically fixed to the suspended balance iron (i.e., suspended counterweight block) through a pulley inside the side valve body. When the submersible water pump is not running, the suspended counterweight (i.e., the suspended counterweight block) is located in the straight section of the submersible water pump's drain pipe. The diameter of the suspended counterweight (i.e., the suspended counterweight block) is smaller than the diameter of the straight pipe, ensuring that the suspended counterweight (i.e., the suspended counterweight block) can rise and fall. When the submersible water pump is running, the suspended counterweight (i.e., the suspended counterweight block) rises to the large section of the pipe, ensuring that the stroke of the suspended counterweight (i.e., the suspended counterweight block) ensures the closure of the valve disc annular sealing surface with the fluid flow annular sealing surface when moving forward, and the closure of the valve disc annular sealing surface with the side valve annular sealing surface when moving backward. The weight of the counterweight (i.e., the valve disc counterweight block) and the suspended counterweight (i.e., the suspended counterweight block) ensures that the valve disc can open when the submersible water pump is running, and the valve disc can close when the submersible water pump is stopped. That is, the weight of the counterweight (i.e., the suspended counterweight block) must be greater than the valve disc sealing force.

[0067] The pin is connected to the pin hole of the fluid passage and the main valve disc, and the pin slides within the pin hole.

[0068] The pump operates by using a starting device to start the centrifugal pump. After the centrifugal pump starts, the submersible feed pump shuts down. The quick-start device is installed between the submersible feed pump and the centrifugal pump's suction pipe. The starting device's inlet flange is fixedly connected to the submersible feed pump's outlet flange, and the starting device's outlet flange is fixedly connected to the intermediate flange of the fluid passage. The upper and lower horizontal flanges of the starting device are fixedly connected to the upper and lower suction pipe flanges of the centrifugal pump, respectively. During pump shutdown, the valve disc's annular sealing surface is closed to the side valve body's annular sealing surface. After the submersible feed pump starts running, under the action of the centrifugal pump's water flow, the valve disc moves forward, and the valve disc's annular sealing surface is closed to the side valve body's sealing surface, preventing backflow of water to the submersible feed pump. After the centrifugal pump starts operating, the submersible feed pump stops. Under the action of the water flow in the centrifugal pump's suction pipe, the valve disc moves backward, and the annular sealing surface of the valve disc and the fluid flow sealing surface are in the open state. When the valve disc and the fluid flow sealing surface are at a 60-70 degree angle, under the action of the counterweight (i.e., the valve disc counterweight block) or the suspended balance iron (i.e., the suspended counterweight block), it quickly closes with the annular sealing surface of the fluid flow, preventing water in the centrifugal pump's suction pipe from returning to the water well through the start valve. This completes one drainage cycle.

[0069] The description of this utility model is given for illustrative and descriptive purposes only, and is not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical application of the utility model, and to enable those skilled in the art to understand the utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A water pump starting device, characterized in that, include: Side valve body (404), fluid passage (407), valve disc (406), valve disc counterweight (4061) disposed on valve disc (406), The inlet end of the side valve body (404) is connected to the submersible feed pump, and the outlet end is connected to the flow fluid (407); The fluid (407) is connected to the suction pipe of the centrifugal pump, and the fluid (407) is provided with a first pin hole (4074) on the side of the valve body near the side valve body; The lower end of the valve disc (406) is provided with a second pin hole (4065), which is slidably connected to the first pin hole (4074) of the fluid passage (407) through a pin (408); The valve disc counterweight (4061) is set on the side of the valve disc (406) near the submersible water pump. The length, weight and position of the valve disc counterweight (4061) are set according to the parameters of the fluid (407).

2. The water pump starting device according to claim 1, characterized in that, Also includes: The valve disc counterweight (4061) is located in the lower half of the valve disc (406); When the valve disc (406) is opened to an angle range of 60° to 70° relative to the fourth annular sealing surface (4075) of the fluid (407), the valve disc counterweight (4061) causes the valve disc (406) to close under the action of gravity. The force generated by the valve disc counterweight (4061) causes the first annular sealing surface (4062) of the valve disc (406) to contact the second annular sealing surface (4045) of the side valve body (404); and / or The side valve body (404) is provided with a water supply flange (4041) at the water inlet end, which is used to connect with the water outlet flange of the submersible water pump; the water outlet end is provided with a first connecting flange (4044), which is used to connect with the second connecting flange (4072) of the fluid flow (407); The fluid passage (407) is also provided with an upper flange (4073) and a lower flange (4071), which are respectively connected to the suction pipe of the centrifugal pump. The fluid passage (407) is provided with a first pin hole (4074) on the side near the side valve body.

3. The water pump starting device according to claim 2, characterized in that, Also includes: When the submersible water pump supplies water, When the valve disc (406) is closed relative to the fourth annular sealing surface (4075) of the fluid (407), the third annular sealing surface (4063) of the valve disc (406) comes into contact with the fourth annular sealing surface (4075) of the fluid (407).

4. The water pump starting device according to claim 1, characterized in that, Also includes: When the counterweight block cannot meet the counterweight requirements due to size limitations, a steel wire rope (402), a fixed pulley (403), and a suspended counterweight block (401) are added. One end of the wire rope (402) is connected to the valve disc (406), and the other end is connected to the hanging counterweight (401) via the fixed pulley (403).

5. The water pump starting device according to claim 4, characterized in that, The vertical counterweight (401) is suspended by a steel wire rope (402) and a fixed pulley (403), and moves vertically.

6. The water pump starting device according to claim 5, characterized in that, include: The side valve body (404) consists of a vertical section and a horizontal section. The vertical section is the water supply chamber (4042), and the submersible water pump is connected to the water supply flange (4041) below. The inner diameter of the lower section of the water supply chamber (4042) is smaller than that of the upper section. The horizontal section is used to connect the fluid (407) and the pulley installation area to form a fluid diversion channel. The vertical counterweight (401) is located inside the straight pipe section of the side valve body (404). It is a cylindrical structure. The diameter of the cylindrical part of the counterweight (401) is smaller than the inner diameter of the lower section of the water supply chamber (4042), so that the vertical counterweight (401) can move up and down within the straight pipe section. When the submersible water pump is running, the suspended counterweight (401) rises to the upper part of the water supply chamber (4042); When the submersible water pump is not running, the suspended counterweight (401) falls under the action of gravity, and the cylindrical part of the suspended counterweight (401) falls back into the lower straight pipe of the side valve body (404).

7. The water pump starting device according to claim 6, characterized in that, include: A pulley mounting hole (4043) is provided on the top of the side valve body (404) for mounting a fixed pulley (403); The position of the pulley mounting hole (4043) corresponds to the wire rope path of the vertical counterweight (401), so that the wire rope can rotate smoothly along the pulley.

8. The water pump starting device according to claim 5, characterized in that, include: A sealing structure (405) is provided on the outside of the pulley mounting hole (4043) to seal the pulley mounting hole (4043) and prevent water leakage.

9. A quick-start water pump, characterized in that, include: Submersible water pump (2), water pump starting device (4) as described in any one of claims 1-8, upper suction pipe (3), lower suction pipe (6), centrifugal pump (5), filter screen (7); The outlet of the submersible water pump (2) is connected to the water supply flange (4041) of the inlet of the water pump starting device (4), the upper flange (4073) of the outlet of the water pump starting device (4) is connected to the upper suction pipe (3), the lower flange (4071) is connected to the lower suction pipe (6), and the upper suction pipe (3) is connected to the inlet of the centrifugal pump (5).

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