A high-efficiency water pump

Abstract

The application discloses a high-efficiency water pump, and relates to the technical field of water pumps, which comprises a volute pump body, a worm wheel fan is arranged in the volute pump body, a spline cylinder is welded to the top of the worm wheel fan, and is matched with a transmission assembly; the transmission assembly comprises an upper driving piece which is matched with a rotor assembly, a plurality of L-shaped claws are uniformly distributed around the bottom of the upper driving piece, the claws are assembled into the inside of a lower driving piece through a press-in mode, and a spring is arranged between the upper driving piece and the lower driving piece; when the pressure of a water outlet increases, a safety valve is opened; water with pressure enters the inside of a cavity, water is continuously gathered in the cavity, the water pressure is increased, and a sliding disc is moved upward; at this time, the spring is compressed, the claws at the bottom of the upper driving piece are separated from the protruding blocks on the inner side of the lower driving piece, the upper driving piece idles, and the lower driving piece is no longer driven to rotate, so that the pressure of the pump outlet is continuously reduced; in addition, the rotor assembly is not burnt.

Description

Technical Field

[0001] This invention relates specifically to the field of water pump technology, and more specifically to a high-efficiency water pump. Background Technology

[0002] A water pump is a machine that transfers mechanical energy or other external energy to a liquid, increasing the liquid's energy (mainly pressure energy), thereby achieving the purpose of transporting, lifting, or pressurizing the liquid. It is widely used in many fields such as agricultural irrigation, industrial production, municipal water supply, building drainage, sewage treatment, and water conservancy projects, and is a core piece of equipment in modern fluid transport systems.

[0003] Chinese Patent Application No. 201821675577.2 discloses a portable centrifugal water pump, including a water pump body, a sealing cover detachably connected to the upper end of the water pump body, a first connecting unit detachably connected to the upper shell of the sealing cover, a handle unit detachably connected to the outside of the first connecting unit, a second connecting unit detachably connected to the handle unit, a base detachably connected to the second connecting unit, and the base detachably connected to the lower end of the water pump body.

[0004] The water pump in the aforementioned patent is a traditional, common type of water pump. This type of pump only has the function of pumping and discharging water, without any filtration effect. This can easily lead to blockage of the pump body, causing the motor or rotor to burn out. In addition, when the pump is used for agricultural irrigation, a pipe is connected to the pump's outlet. When the pipe is twisted or pressed by a heavy object, it obstructs the discharge of water. At this time, the pressure at the pump outlet increases, the load on the pump increases, and this can lead to damage to the coil inside the pump. Summary of the Invention

[0005] The purpose of this invention is to provide a high-efficiency water pump that, when the pump outlet is blocked or the pump inlet pressure increases due to pipe kinking, releases pressure through a safety valve and cuts off the transmission of the transmission components, so that the rotor assembly is in a no-load idling state, thereby preventing the rotor from burning out; thus solving the technical problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A high-efficiency water pump includes a volute pump body, inside which is a worm gear fan. The top of the worm gear fan is welded with a splined cylinder and cooperates with a transmission assembly located above the volute pump body. The transmission assembly includes an upper drive component that is connected to the rotor assembly. The upper drive component has multiple L-shaped claws evenly distributed around its bottom. The claws are assembled into the lower drive component by pressing in, and a spring is provided between the upper drive component and the lower drive component. The upper end of the inner side of the lower drive component is also provided with multiple protrusions in a ring array; under normal conditions, the spring pushes the upper drive component and the lower drive component to both sides according to its own elastic force, and the claw at the bottom of the upper drive component engages with the protrusions inside the lower drive component, realizing the transmission connection between the upper drive component and the lower drive component. The bottom of the lower drive component is also fixed with an axial bearing by a countersunk screw, and a sliding plate is installed on the outside of the axial bearing; the sliding plate is located in the cavity reserved at the top of the volute pump body, and a C-shaped groove is opened on the outside of the sliding plate and an O-ring is nested therein; at least one safety valve is installed inside the volute pump body. A splined shaft is fixed at the bottom of the lower drive component. The splined shaft passes through the axial bearing and is then connected to the splined cylinder at the top of the worm gear fan.

[0007] As a further technical solution of the present invention, a rotor fixing plate is fixed on the top of the volute pump body; a bearing is installed inside the rotor fixing plate; the lower end of the rotor assembly is connected to the bearing, and the upper end is connected to the pump top cover through another bearing.

[0008] As a further technical solution of the present invention, the rotor assembly is connected to a power supply cable, which extends out from the top of the pump top cover and is locked, fixed and sealed by a cable seal.

[0009] As a further technical solution of the present invention, the top of the pump cover is integrally provided with a handle and a hook is threadedly connected; the pump cover is fixed to the top of the pump casing by bolts, and the lower end of the pump casing is fixed to the volute pump body by bolts.

[0010] As a further technical solution of the present invention, the lower end of the worm gear fan is attached to the upper surface of the mold base, and a conical filter screen is fixed at the bottom of the mold base; The bottom of the volute pump body is fitted with a sealing gasket and is locked to the pump base with bolts; a filter screen is detachably connected to the bottom of the pump base.

[0011] As a further technical solution of the present invention, a positioning connector is bolted to the bottom side of the rotor fixing disk; the bottom of the positioning connector is provided with at least one stationary contact; a moving contact is provided below the stationary contact; the moving contact is fixed on the sliding disk. The moving contact is connected to a cable, and the stationary contact is electrically connected to the explosion-proof audible and visual warning light via a wire; the explosion-proof audible and visual warning light is also connected to a cable.

[0012] As a further technical solution of the present invention, the explosion-proof audible and visual warning light is installed in the middle position of the top of the pump cover, and the height of the handle is greater than the installation height of the explosion-proof audible and visual warning light.

[0013] As a further technical solution of the present invention, the longitudinal section of the claw is L-shaped, but the claw as a whole is fan-shaped, with the center of the circle being the axis of the upper drive member.

[0014] As a further technical solution of the present invention, the diameter of the spring is smaller than the diameter of the pawl, and the diameter of the spring is larger than the diameter of the hole in the drive component that mates with the rotor assembly.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. In normal use, the rotor assembly drives the upper drive component to rotate. Under normal conditions, the spring pushes the upper and lower drive components to both sides according to its own elastic force. The pawl at the bottom of the upper drive component engages with the protrusion inside the lower drive component, realizing the transmission connection between the upper and lower drive components. The spline shaft at the bottom of the lower drive component drives the worm gear fan to rotate at high speed through the spline cylinder, thereby drawing water and discharging it from the outlet end of the volute pump body. 2. In this invention, when the outlet of the volute pump is blocked or the outlet pressure increases due to a kink in the water pipe, the safety valve opens; pressurized water enters the cavity, continuously accumulating inside, increasing the internal water pressure, and pushing the sliding disc upward; at this time, the spring is compressed, and the pawl at the bottom of the upper drive component separates from the protrusion on the inner side of the lower drive component, causing the upper drive component to idle and no longer drive the lower drive component to rotate, thus continuously reducing the pressure at the pump outlet; in addition, it will not cause the rotor assembly to burn out; 3. In this invention, a pressure relief valve is installed on the outside of the volute pump body and extends into the cavity. When the pawl at the bottom of the upper drive component separates from the protrusion on the inside of the lower drive component, and the rotor assembly idles, the worm gear fan stops rotating, and the pressure at the pump inlet returns to normal. However, water remains inside the cavity, so the rotor assembly continues to idle. When the outlet blockage or the problem of water pipe kinking is resolved, the operator opens the pressure relief valve to drain the water from the cavity. At this time, the spring returns to its normal state after losing the pushing force of the sliding plate, and the pawl at the bottom of the upper drive component and the protrusion on the inside of the lower drive component engage. Then, the pump can be restarted. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0017] Figure 2 In this invention Figure 1 A schematic diagram of the bottom structure.

[0018] Figure 3 In this invention Figure 2 A partial structural diagram.

[0019] Figure 4In this invention Figure 3 The left view.

[0020] Figure 5 In this invention Figure 4 AA sectional view.

[0021] Figure 6 In this invention Figure 2 A schematic diagram of the internal structure.

[0022] Figure 7 In this invention Figure 2 A schematic diagram of the split structure.

[0023] Figure 8 In this invention Figure 7 Another perspective illustration.

[0024] Figure 9 In this invention Figure 6 A partial structural diagram.

[0025] Figure 10 In this invention Figure 9 Another perspective illustration.

[0026] Figure 11 In this invention Figure 3 A partial sectional view.

[0027] Figure 12 In this invention Figure 11 Another perspective illustration.

[0028] Figure 13 In this invention Figure 5 Enlarged diagram of point B.

[0029] Figure 14 In this invention Figure 7 Enlarged diagram of point C.

[0030] Figure 15 In this invention Figure 10 Enlarged diagram of point D.

[0031] Figure 16 In this invention Figure 11 Enlarged diagram of point E.

[0032] Figure 17 In this invention Figure 12 Enlarged schematic diagram at point F.

[0033] In the diagram: 1-Pump base, 2-Sealing gasket, 3-Mold base, 4-Wheel fan, 5-Sliding disc, 6-Transmission assembly, 7-Rotor assembly, 8-Rotor fixing disc, 9-Pump top cover, 10-Vortex pump body, 11-Handle, 12-Hanging buckle, 13-Explosion-proof audible and visual warning light, 14-Safety valve, 15-Pump casing, 16-Moving contact, 17-Static contact, 18-Positioning connector, 19-Bearing, 20-Cavity, 21-Cable seal, 22-Filter screen, 23-Conical filter screen; 61-Upper drive component, 62-Lower drive component, 63-Spring, 64-Splined shaft, 65-Axial bearing, 66-Claw, 67-Protrusion block. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] Please see Figures 1 to 17 In this embodiment of the invention, a high-efficiency water pump includes a volute pump body 10, and a worm gear fan 4 is provided inside the volute pump body 10. The top of the worm gear fan 4 is welded with a splined cylinder and cooperates with a transmission component 6 located above the volute pump body 10. The transmission assembly 6 includes an upper drive member 61 that is connected to the rotor assembly 7. The upper drive member 61 has multiple L-shaped claws 66 evenly distributed around its bottom. The claws 66 are assembled into the lower drive member 62 by pressing in, and a spring 63 is provided between the upper drive member 61 and the lower drive member 62. The upper end of the inner side of the lower drive component 62 is provided with a plurality of protrusions 67 in a ring array; the bottom of the lower drive component 62 is also fixed with an axial bearing 65 by countersunk screws, and a sliding plate 5 is installed on the outside of the axial bearing 65; the sliding plate 5 is located in the cavity 20 reserved at the top of the volute pump body 10, and a C-shaped groove is opened on the outside of the sliding plate 5 and an O-ring is nested therein; at least one safety valve 14 is installed inside the volute pump body 10; A splined shaft 64 is fixed to the bottom of the lower drive component 62. The splined shaft 64 passes through the axial bearing 65 and is connected to the splined cylinder at the top of the worm gear fan 4.

[0036] By adopting the above technical solution, during normal use, the rotor assembly 7 drives the upper drive member 61 to rotate. Under normal conditions, the spring 63 pushes the upper drive member 61 and the lower drive member 62 to both sides according to its own elastic force. The pawl 66 at the bottom of the upper drive member 61 engages with the protrusion 67 inside the lower drive member 62, realizing the transmission connection between the upper drive member 61 and the lower drive member 62. The spline shaft 64 at the bottom of the lower drive member 62 drives the worm gear fan 4 to rotate at high speed through the spline cylinder, thereby drawing water and discharging the water from the outlet end of the volute pump body 10. When the outlet of the volute pump body 10 is blocked or the outlet pressure increases due to the kinking of the water pipe, the safety valve 14 opens. Pressurized water enters the cavity 20 and continuously accumulates in the cavity 20, increasing the internal water pressure and pushing the sliding plate 5 upward. At this time, the spring 63 is compressed, and the pawl 66 at the bottom of the upper drive member 61 and the protrusion 67 on the inner side of the lower drive member 62 separate. The upper drive member 61 rotates freely and no longer drives the lower drive member 62 to rotate, so the pressure at the pump outlet will continuously decrease. In addition, it will not cause the rotor assembly 7 to burn out.

[0037] As a further explanation of the above embodiment, a pressure relief valve is installed on the outside of the volute pump body 10 and extends into the cavity 20. When the pawl 66 at the bottom of the upper drive member 61 and the protrusion 67 on the inside of the lower drive member 62 separate, and the rotor assembly 7 spins idly, the worm gear fan 4 stops rotating, and the pressure at the pump inlet returns to normal. However, water remains inside the cavity 20, so the rotor assembly 7 spins idly continuously. When the outlet blockage or the problem of water pipe kinking is resolved, the operator opens the pressure relief valve to drain the water inside the cavity 20. At this time, the spring 63 returns to normal after losing the pushing force of the sliding plate 5, and the pawl 66 at the bottom of the upper drive member 61 and the protrusion 67 on the inside of the lower drive member 62 engage. Then, the pump can be restarted.

[0038] Please see the appendix Figure 1-11 In this embodiment, the top of the volute pump body 10 is also fixed with a rotor fixing disk 8; a bearing 19 is installed inside the rotor fixing disk 8; the lower end of the rotor assembly 7 is connected to the bearing 19, and the upper end is connected to the pump top cover 9 through another bearing.

[0039] More specifically, the rotor assembly 7 is connected to a power supply cable, which extends from the top of the pump top cover 9 and is locked and sealed by the cable seal 21.

[0040] The pump top cover 9 is integrally provided with a handle 11 and threadedly connected with a hook 12; the pump top cover 9 is fixed to the top of the pump housing 15 by bolts, and the lower end of the pump housing 15 is fixed to the volute pump body 10 by bolts.

[0041] By adopting the above technical solution, the handle 11 is designed to facilitate the movement of the pump body by hand by the staff; the hook 12 is designed to facilitate the attachment of the wire rope so that the water pump can be used in the well.

[0042] The cable seal 21 facilitates the sealing of the gap between the cable and the pump top cover 9, thereby ensuring the waterproof effect of the pump body.

[0043] Please see the appendix Figure 1-2 and Figure 7-11 In this embodiment, the lower end of the worm gear fan 4 is attached to the upper surface of the mold base 3, and a conical filter screen 23 is fixed at the bottom of the mold base 3; The bottom of the volute pump body 10 is fitted with a sealing gasket 2 and is locked and fixed to the pump base 1 by bolts; the bottom of the pump base 1 is detachably connected with a filter screen 22.

[0044] By adopting the above technical solution, the filter screen 22 performs the first interception, preventing the entry of algae or other debris, and preventing the worm gear fan 4 from being entangled and thus unable to function properly.

[0045] The conical filter 23 performs a second filtration, reducing impurities inside the water body and greatly improving the pump's efficient water delivery effect.

[0046] In addition, especially when the pump is placed in the riverbed, the filter screen 22 can prevent small stones from being sucked in and causing damage to the worm gear fan 4.

[0047] Please see the appendix Figure 13-16 In this embodiment, a positioning connector 18 is bolted to the bottom side of the rotor fixing disk 8; the bottom of the positioning connector 18 is provided with at least one stationary contact 17; a moving contact 16 is provided below the stationary contact 17; the moving contact 16 is fixed on the sliding disk 5. The moving contact 16 is connected to a cable, and the stationary contact 17 is electrically connected to the explosion-proof audible and visual warning light 13 via a wire; the explosion-proof audible and visual warning light 13 is also connected to a cable.

[0048] By adopting the above technical solution, when the pump inlet pressure increases and water continues to accumulate in the cavity 20, the sliding plate 5 moves upward, the moving contact 16 pushes against the moving and stationary contact 17, so that the explosion-proof audible and visual warning light 13 is energized. At this time, the explosion-proof audible and visual warning light 13 emits an audible and visual alarm to attract the attention of the staff.

[0049] It should be noted that the explosion-proof audible and visual warning light 13 plays an auxiliary role, and is not the sole warning light.

[0050] When the water pump is used for agricultural irrigation, whether water is flowing from the conveyor belt is the key to determining the problem; when the pump is used for industrial water supply, the explosion-proof audible and visual warning light 13 serves as a warning; and other reminder functions can be added according to the actual working scenario.

[0051] In this embodiment, the explosion-proof audible and visual warning light 13 is installed in the middle of the top of the pump top cover 9, and the height of the handle 11 is greater than the installation height of the explosion-proof audible and visual warning light 13.

[0052] Please see the appendix Figure 17 In this embodiment, the longitudinal section of the claw 66 is L-shaped, but the claw 66 as a whole is fan-shaped, with the center of the circle being the axis of the upper drive member 61.

[0053] The diameter of the spring 63 is smaller than the diameter of the pawl 66, and the diameter of the spring 63 is larger than the diameter of the hole in the drive member 61 that mates with the rotor assembly 7.

[0054] By adopting the above solution, it is possible to ensure the proper installation of the spring 63 and the normal rotation of the upper drive member 61 driving the lower drive member 62. When the upper drive member 61 separates from the lower drive member 62 and the upper drive member 61 rotates on its own, the spring 63 will not affect the rotation of the upper drive member 61.

[0055] The working principle of this invention is as follows: During normal use, the rotor assembly 7 drives the upper drive member 61 to rotate. Under normal conditions, the spring 63 pushes the upper drive member 61 and the lower drive member 62 to both sides according to its own elastic force. The claw 66 at the bottom of the upper drive member 61 engages with the protrusion 67 inside the lower drive member 62, realizing the transmission connection between the upper drive member 61 and the lower drive member 62. The spline shaft 64 at the bottom of the lower drive member 62 drives the worm gear fan 4 to rotate at high speed through the spline cylinder, thereby drawing water and discharging the water from the outlet end of the volute pump body 10. When the outlet of the volute pump body 10 is blocked or the outlet pressure increases due to the kinking of the water pipe, the safety valve 14 opens. Pressurized water enters the cavity 20 and continuously accumulates in the cavity 20, increasing the internal water pressure and pushing the sliding plate 5 upward. At this time, the spring 63 is compressed, and the pawl 66 at the bottom of the upper drive member 61 and the protrusion 67 on the inner side of the lower drive member 62 separate. The upper drive member 61 rotates freely and no longer drives the lower drive member 62 to rotate, so the pressure at the pump outlet will continuously decrease. In addition, it will not cause the rotor assembly 7 to burn out. Additionally, a pressure relief valve is installed on the outside of the volute pump body 10, extending into the cavity 20. When the pawl 66 at the bottom of the upper drive member 61 and the protrusion 67 on the inside of the lower drive member 62 separate, and the rotor assembly 7 idles, the worm gear fan 4 stops rotating, and the pressure at the pump inlet returns to normal. However, water remains inside the cavity 20, so the rotor assembly 7 continues to idle. When the outlet blockage or the problem of water pipe kinking is resolved, the operator opens the pressure relief valve to drain the water from the cavity 20. At this time, the spring 63 returns to normal after losing the pushing force of the sliding plate 5, and the pawl 66 at the bottom of the upper drive member 61 and the protrusion 67 on the inside of the lower drive member 62 engage. Then, the pump can be restarted.

[0056] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0057] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A high-efficiency water pump, characterized in that: It includes a volute pump body (10), inside which is a worm gear fan (4), the top of which is welded with a splined cylinder and cooperates with a transmission assembly (6) located above the volute pump body (10); The transmission assembly (6) includes an upper drive member (61) that is connected to the rotor assembly (7). The upper drive member (61) has multiple L-shaped claws (66) evenly distributed around its bottom. The claws (66) are assembled into the lower drive member (62) by pressing. A spring (63) is provided between the upper drive member (61) and the lower drive member (62). The upper end of the inner side of the lower drive member (62) is also provided with multiple protrusions (67) in a ring array. Under normal conditions, the spring (63) pushes the upper drive member (61) and the lower drive member (62) to both sides according to its own elastic force. The pawl (66) at the bottom of the upper drive member (61) engages with the protrusions (67) inside the lower drive member (62), realizing the transmission connection between the upper drive member (61) and the lower drive member (62). The bottom of the lower drive unit (62) is also fixed with an axial bearing (65) by a countersunk screw, and a sliding plate (5) is installed on the outside of the axial bearing (65); the sliding plate (5) is located in the cavity (20) reserved at the top of the volute pump body (10), and a C-shaped groove is opened on the outside of the sliding plate (5) and an O-ring is nested therein; at least one safety valve (14) is installed inside the volute pump body (10). A spline shaft (64) is fixed at the bottom of the lower drive unit (62), which passes through the axial bearing (65) and is connected to the spline cylinder at the top of the worm gear fan (4) via a drive.

2. The high-efficiency water pump according to claim 1, characterized in that: The top of the volute pump body (10) is also fixed with a rotor fixing plate (8); a bearing (19) is installed inside the rotor fixing plate (8); the lower end of the rotor assembly (7) is connected to the bearing (19), and the upper end is connected to the pump top cover (9) through another bearing.

3. The high-efficiency water pump according to claim 1, characterized in that: The rotor assembly (7) is connected to a power supply cable that extends from the top of the pump top cover (9) and is locked and sealed by a cable seal (21).

4. The high-efficiency water pump according to claim 3, characterized in that: The pump top cover (9) is integrally provided with a handle (11) and threadedly connected with a hook (12); the pump top cover (9) is fixed to the top of the pump housing (15) by bolts, and the lower end of the pump housing (15) is fixed to the volute pump body (10) by bolts.

5. The high-efficiency water pump according to claim 1, characterized in that: The lower end of the worm gear fan (4) is attached to the upper surface of the mold base (3), and a conical filter screen (23) is fixed at the bottom of the mold base (3). The bottom of the volute pump body (10) is fitted with a sealing gasket (2) and is locked and fixed to the pump base (1) by bolts; the bottom of the pump base (1) is detachably connected with a filter screen (22).

6. The high-efficiency water pump according to claim 2, characterized in that: The bottom side of the rotor fixing disk (8) is connected to a positioning connector (18) by bolts; the bottom of the positioning connector (18) is provided with at least one stationary contact (17); a moving contact (16) is provided below the stationary contact (17); the moving contact (16) is fixed on the sliding disk (5); The moving contact (16) is connected to a cable, and the stationary contact (17) is electrically connected to the explosion-proof audible and visual warning light (13) via a wire; the explosion-proof audible and visual warning light (13) is also connected to a cable.

7. The high-efficiency water pump according to claim 6, characterized in that: The explosion-proof audible and visual warning light (13) is installed in the middle of the top of the pump top cover (9), and the height of the handle (11) is greater than the installation height of the explosion-proof audible and visual warning light (13).

8. The high-efficiency water pump according to claim 1, characterized in that: The longitudinal section of the claw (66) is L-shaped, but the claw (66) as a whole is fan-shaped, with the center of the circle being the axis of the upper drive member (61).

9. The high-efficiency water pump according to claim 8, characterized in that: The diameter of the spring (63) is smaller than the diameter of the pawl (66), and the diameter of the spring (63) is larger than the diameter of the hole in the drive member (61) that mates with the rotor assembly (7).

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