Vertical water pump

Abstract

The vertical water pump comprises a pump body, a water inlet is formed in the bottom end of the pump body, a water outlet is formed in the top end of the pump body, and a water passing channel communicating the water inlet with the water outlet is formed; the stator is arranged in the pump body; the rotor is arranged in the pump body; an impeller is arranged on the rotor; the check valve is arranged in the pump body so as to prevent water in the pump body from flowing out of the water inlet; a water storage cavity is formed in the pump body, and the check valve is arranged between the water storage cavity and the water inlet so as to prevent water in the water storage cavity from flowing out of the water inlet. According to the vertical water pump, the check valve is integrated in the pump body, integration of the check function is achieved, the trouble of externally connecting the check valve is omitted, the whole vertical water pump is compact in structure and easy and convenient to install, potential leakage points caused by externally connecting pipe fittings are reduced, and reliability and sealing performance are improved.

Description

Technical Field

[0001] The present application relates to the technical field of water pumps, and in particular to a vertical water pump. Background Art

[0002] To prevent water from flowing back into the pipe when the pump stops and to improve pump response, especially when the pump is installed at a high location, a separate external check valve is often installed on the water inlet pipe. This design increases the number of components in the entire pump system, making the installation structure complex, occupying more space, and increasing costs. Furthermore, the additional pipe connections increase the potential risk of leakage and reduce reliability. Summary of the Invention

[0003] In order to solve the above problems, the present technical solution provides a vertical water pump.

[0004] To achieve the above purpose, the technical solution is as follows:

[0005] A vertical water pump comprising

[0006] A pump body, having a water inlet at its bottom end, a water outlet at its top end, and a water passage connecting the water inlet and the water outlet;

[0007] a stator disposed within the pump body;

[0008] A rotor is provided in the pump body; an impeller is provided on the rotor;

[0009] a check valve disposed in the pump body to restrict the water in the pump body from flowing out of the water inlet;

[0010] A water storage chamber is provided in the pump body, and the check valve is provided between the water storage chamber and the water inlet to restrict the water in the water storage chamber from flowing out of the water inlet.

[0011] In the vertical water pump as described above, the check valve includes a valve stem, a sealing sheet sleeved on the valve stem, and a spring. The spring presses the valve stem to drive the sealing sheet to move in the direction of blocking the water inlet.

[0012] In the vertical water pump as described above, a common bracket is provided in the pump body, one end of the rotor is positioned on the pump body, and the other end is positioned on the common bracket.

[0013] In the vertical water pump as described above, the common bracket is provided with a positioning hole for inserting the top end of the valve stem, and the two ends of the spring press against the common bracket and the valve stem respectively.

[0014] In the vertical water pump as described above, an intermediate bracket for inserting the bottom end of the valve stem is provided at the water inlet.

[0015] In the vertical water pump as described above, a pump cavity is formed between the common bracket and the pump body.

[0016] In the vertical water pump as described above, a filling cavity for pouring resin oil is provided in the pump body, and the stator is located in the filling cavity.

[0017] In the vertical water pump as described above, the pump body includes an upper shell, a main shell and a bottom shell. The water outlet is provided on the upper shell, and the water inlet is provided on the bottom shell.

[0018] In the vertical water pump described above, a transition arc surface is provided between the water storage chamber and the water inlet, and the transition arc surface gradually tilts, converges and narrows along the direction from the water storage chamber to the water inlet, and the sealing sheet is provided with a conical surface that cooperates with the transition arc surface.

[0019] In the vertical water pump as described above, the valve stem is provided with a first limiting ring and a second limiting ring spaced apart from bottom to top, and the bottom surface and the top surface of the sealing sheet respectively abut against the first limiting ring and the second limiting ring.

[0020] The beneficial effects of this application are:

[0021] This invention provides a vertical water pump that integrates a check valve within the pump body, achieving an integrated check function and eliminating the need for an external check valve. This results in a compact structure and easy installation, while also reducing potential leaks caused by external pipe fittings, thereby improving reliability and sealing. The water storage chamber design allows for the storage of a portion of water when the pump is stopped. This, combined with the check valve, significantly improves the pump's self-priming capability. This eliminates the need for manual water priming or negative pressure exhaust upon impeller startup, resulting in a faster startup response. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments.

[0023] Figure 1 This is a half-section view of the present application. DETAILED DESCRIPTION

[0024] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0025] A vertical water pump comprising

[0026] The pump body 1 has a water inlet 2 at its bottom, a water outlet 3 at its top, and a water passage 4 connecting the water inlet 2 and the water outlet 3;

[0027] a stator 5, which is disposed in the pump body 1;

[0028] A rotor 6 is provided in the pump body 1; an impeller 7 is provided on the rotor 6;

[0029] The check valve 8 is provided in the pump body 1 to restrict the water in the pump body 1 from flowing out of the water inlet 2. In this embodiment, the check valve adopts a spring straight-pull type, and other types and structures of check valves such as a flap type can also be adopted.

[0030] The present invention provides a vertical water pump, which integrates a check valve inside the pump body, realizes the integration of the check function, eliminates the trouble of externally connecting the check valve, makes the entire vertical water pump compact in structure and easy to install, reduces potential leakage points caused by external pipe fittings, and improves reliability and sealing.

[0031] Furthermore, as a preferred embodiment of this solution, but not limiting, the check valve 8 includes a valve stem 81, a sealing plate 82 sleeved on the valve stem 81, and a spring 83. The spring 83 presses against the valve stem 81, driving the sealing plate 82 toward the water inlet 2. This check valve has a simple and reliable structure, utilizing the preload force of the spring 83 to achieve automatic sealing. When the vertical water pump is shut down, the spring force quickly pushes the sealing plate 82 to close the water inlet 2, effectively preventing water from flowing back and the water storage chamber from emptying. This ensures that the pump can quickly resume operation upon restart, improving the pump's water diversion performance.

[0032] Furthermore, as a preferred embodiment of this solution but not limiting, a common bracket 9 is provided within the pump body 1, with one end of the rotor 6 positioned on the pump body 1 and the other end positioned on the common bracket 9. The provision of the common bracket 9 and the dual-end positioning support of the rotor 6 greatly enhance the rigidity and stability of the rotor 6 during high-speed operation, effectively reducing vibration and noise, and improving the operational stability, operating efficiency, and service life of the water pump.

[0033] Furthermore, as a preferred embodiment of the present invention but not limiting, the rotor 6 includes a rotating shaft 61 , and the common bracket 9 is provided with a socket 93 for inserting the rotating shaft 61 .

[0034] Furthermore, as a preferred embodiment of this solution, but not limiting, the insertion hole 93 is coaxial with the positioning hole 91 and arranged in opposite directions. This simplifies the processing and assembly of the common bracket 9 and ensures the relative positional accuracy between the sealing center of the check valve 8, the center of the water inlet 2, and the rotor's operating center. This avoids problems such as valve stem sticking, uneven seal wear, or interference between the impeller and the pump body caused by misalignment.

[0035] Furthermore, as a preferred embodiment of this solution, but not limiting, the common bracket 9 is provided with a positioning hole 91 for inserting the top end of the valve stem 81, and the two ends of the spring 83 respectively press against the common bracket 9 and the valve stem 81. Integrating the guiding functions of the valve stem 81 and the supporting functions of the spring 83 into the common bracket 9 makes the installation and positioning of the check valve more precise and stable, ensures the linearity of the movement of the valve stem 81, thereby improving the sealing effect and operating reliability of the check valve, and simultaneously simplifies the internal structure, reduces the number of parts, reduces the volume, and improves the integration level.

[0036] Furthermore, as a preferred embodiment of this solution but not a limitation, an intermediate bracket 21 is provided at the water inlet 2 for inserting the bottom end of the valve stem 81. Providing the intermediate bracket 21 at the water inlet 2 provides additional positioning support for the bottom end of the valve stem 81, and cooperates with the positioning hole 91 at the top end to further ensure that the valve stem 81 does not deflect during movement, allowing the sealing plate 82 to accurately align and seal the water inlet, thereby improving the operational reliability and sealing performance of the check valve.

[0037] Furthermore, as a preferred embodiment of this solution but not a limitation, a pump cavity 92 is formed between the common bracket 9 and the pump body 1. The pump cavity 92 is naturally formed by the common bracket 9, and the structural design is very compact and efficient, which optimizes the water flow path, reduces eddy currents and hydraulic losses, and helps to improve the head and efficiency of the water pump.

[0038] Furthermore, as a preferred embodiment of this solution but not limiting, a filling cavity 12 for filling resin oil is provided within the pump body 1, and the stator 5 is located within the filling cavity 12. Using resin oil to fill and encapsulate the stator 5 efficiently transfers heat generated during motor operation to the housing 1 for dissipation, achieving far superior heat dissipation than air. It also provides excellent waterproof, moisture-proof, and insulating properties, significantly improving the motor's power density, reliability, and service life.

[0039] Furthermore, as a preferred embodiment of this solution but not limiting, the pump body 1 includes an upper shell 13, a main shell 14, and a bottom shell 15. The water outlet 3 is provided on the upper shell 13, and the water inlet 2 is provided on the bottom shell 15. The split shell design facilitates the manufacture, assembly, and maintenance of parts. For example, specific parts can be easily disassembled to inspect internal components such as the check valve and impeller, improving the product's manufacturability and maintainability.

[0040] Furthermore, as a preferred embodiment of this solution but not a limitation, a transition arc surface 16 is provided between the water storage chamber 11 and the water inlet 2. The transition arc surface 16 gradually tilts, converges, and narrows along the direction from the water storage chamber 11 to the water inlet 2. The sealing sheet 82 is provided with a tapered surface 821 that cooperates with the transition arc surface 16. The sealing sheet is made of silicone, and the cooperation between the tapered surface and the transition arc surface enhances the sealing effect. At the same time, the water in the water storage chamber, under the action of gravity, presses down on the sealing sheet, which also improves the sealing effect.

[0041] Furthermore, as a preferred embodiment of this solution but not a limitation, the valve stem 81 is provided with a first limiting ring 811 and a second limiting ring 812 spaced apart from each other from bottom to top. The bottom and top surfaces of the sealing plate 82 respectively abut against the first limiting ring 811 and the second limiting ring 812. The diameter of the first limiting ring is smaller than that of the second limiting ring. When the sealing plate is installed, the first limiting ring facilitates the passage of the sealing ring, while the second limiting ring restricts the passage of the sealing plate and provides support for the sealing plate.

[0042] Furthermore, as a preferred embodiment of this solution but not a limitation, a groove 822 is provided on the top surface of the sealing sheet to form a gap with the second limiting ring. The groove provides deformation space for the sealing sheet, so that the sealing sheet can better fit the transition arc surface.

[0043] The above description is only a preferred embodiment of the present application and is not intended to limit the scope of implementation of the present application. Other embodiments whose principles and basic structures are the same or similar to those of the present application are within the scope of protection of the present application.

Claims

1. A vertical water pump, characterized in that: include A pump body (1) is provided with a water inlet (2) at its bottom end, a water outlet (3) at its top end, and a water passage (4) communicating the water inlet (2) and the water outlet (3); a stator (5) disposed in the pump body (1); A rotor (6) is disposed in the pump body (1); an impeller (7) is disposed on the rotor (6); a check valve (8) disposed in the pump body (1) to restrict water in the pump body (1) from flowing out from the water inlet (2); A water storage chamber (11) is provided in the pump body (1), and the check valve (8) is provided between the water storage chamber (11) and the water inlet (2) to restrict the water in the water storage chamber (11) from flowing out of the water inlet (2).

2. A vertical water pump according to claim 1, characterized in that: The check valve (8) comprises a valve stem (81), a sealing sheet (82) sleeved on the valve stem (81), and a spring (83). The spring (83) presses the valve stem (81) to drive the sealing sheet (82) to move in a direction of sealing the water inlet (2).

3. A vertical water pump according to claim 2, characterized in that: A common bracket (9) is provided in the pump body (1); one end of the rotor (6) is positioned on the pump body (1), and the other end is positioned on the common bracket (9).

4. A vertical water pump according to claim 3, characterized in that: The common bracket (9) is provided with a positioning hole (91) for inserting the top end of the valve stem (81), and the two ends of the spring (83) are pressed against the common bracket (9) and the valve stem (81) respectively.

5. A vertical water pump according to claim 2, characterized in that: An intermediate bracket (21) is provided at the water inlet (2) for the bottom end of the valve stem (81) to be inserted.

6. A vertical water pump according to claim 3, characterized in that: A pump cavity (92) is formed between the common bracket (9) and the pump body (1).

7. A vertical water pump according to claim 1, characterized in that: A filling cavity (12) for injecting resin oil is provided in the pump body (1), and the stator (5) is located in the filling cavity (12).

8. A vertical water pump according to claim 3, characterized in that: The pump body (1) comprises an upper shell (13), a main shell (14) and a bottom shell (15); the water outlet (3) is provided on the upper shell (13); and the water inlet (2) is provided on the bottom shell (15).

9. A vertical water pump according to claim 8, characterized in that: A transition camber (16) is provided between the water storage chamber (11) and the water inlet (2), and the transition camber (16) gradually tilts, gathers, and narrows along the direction from the water storage chamber (11) to the water inlet (2), and a conical surface (821) is provided on the sealing sheet (82) that cooperates with the transition camber (16).

10. A vertical water pump according to claim 9, characterized in that: The valve stem (81) is provided with a first limiting ring (811) and a second limiting ring (812) spaced apart from bottom to top, and the bottom surface and top surface of the sealing sheet (82) respectively abut against the first limiting ring (811) and the second limiting ring (812).

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