Hydraulic optimization pump body based on eccentric vortex chamber structure

Abstract

The utility model provides a kind of hydraulic optimization pump body based on eccentric vortex chamber structure, it can adopt sunken eccentric cylinder design, its axis is lower than pump body assembly surface, directly increase negative pressure suction range by reducing vortex chamber center line position, shorten self-suction time, comprising: eccentric sunken vortex chamber, vortex chamber is eccentric cylinder structure with axis lower than pump body assembly surface;Radial reinforcement component, vortex chamber outer wall is equipped with the reinforcing rib of eccentric point as center and radial distribution;Support pedestal, vortex chamber bottom is provided with the double support feet of front-back symmetry, and double support feet extend from radial reinforcing rib;The upper wall of eccentric sunken vortex chamber to vortex chamber axis, vortex chamber axis and the lower wall height ratio of eccentric sunken vortex chamber is: 3-4:2.

Description

Technical Field

[0001] This utility model relates to the field of water pumps, and more specifically, to a hydraulically optimized pump body based on an eccentric vortex chamber structure. Background Technology

[0002] The design of the pump's vortex chamber structure directly affects hydraulic efficiency and reliability. Traditional pump bodies generally suffer from three major technical bottlenecks:

[0003] Insufficient self-priming performance: The symmetrical vortex structure (such as patent application number: 202110957021.2) restricts the negative pressure zone at the inlet, and the suction head is usually ≤6m, with a self-priming time >40 seconds (8m head condition), which makes it difficult to meet emergency drainage needs.

[0004] Poor structural reliability: The vortex chamber reinforcing ribs mostly adopt a uniformly distributed grid form, which has weak resistance to circumferential stress and a burst pressure of only 4-5 MPa; the casting process leads to stress concentration at the root of the ribs, resulting in a fatigue life of <20,000 hours.

[0005] Low modularity: The support base is rigidly connected to the power base, making it impossible to place the pump body independently; power switching requires disassembling the entire machine, which takes more than 15 minutes, violating the requirements for rapid maintenance. Utility Model Content

[0006] The purpose of this utility model is to provide a hydraulically optimized pump body based on an eccentric vortex structure, which can adopt a sunken eccentric cylindrical design with its axis lower than the pump body assembly surface. By lowering the position of the vortex centerline, the negative pressure suction head is directly increased, and the self-priming time is shortened.

[0007] The embodiments of this utility model are implemented as follows:

[0008] A hydraulically optimized pump body based on an eccentric vortex chamber structure includes:

[0009] Eccentrically recessed vortex chamber: The vortex chamber is an eccentric cylindrical structure with its axis lower than the pump body assembly surface;

[0010] The radially reinforced component has reinforcing ribs arranged radially around the eccentric point on the outer wall of the vortex chamber.

[0011] The support base has two symmetrical support legs at the bottom of the vortex chamber, which extend from radial reinforcing ribs.

[0012] In a preferred embodiment of the present invention, the ratio of the height of the upper wall of the eccentric sinking vortex chamber to the vortex chamber axis and the height of the vortex chamber axis to the lower wall of the eccentric sinking vortex chamber is 3-4:2.

[0013] In a preferred embodiment of this utility model, 6-10 reinforcing ribs are provided, which are in the shape of right-angled triangles and extend to the outer edge of the vortex chamber. The thickness of the root of the reinforcing rib is 1.2-1.5 times the thickness of the vortex chamber wall.

[0014] In a preferred embodiment of the present invention, a stepped concentric ring array is provided at the center of the reinforcing rib. The array includes at least three layers of reinforcing rings with progressively increasing diameters. Secondary reinforcing ribs are evenly distributed on the outer wall of each reinforcing ring. Adjacent reinforcing rings are rigidly connected by radially distributed block-shaped connectors. The axial projection of the block-shaped connectors forms an angle of 30°-60° with the extension direction of the radial reinforcing ribs.

[0015] In a preferred embodiment of this utility model, the supporting surface of the above-mentioned double support feet is a trapezoidal structure with anti-slip texture, and the center distance L satisfies: 0.7D ≤ L ≤ 0.9D, where D is the outer diameter of the vortex.

[0016] In a preferred embodiment of the present invention, the vortex chamber is provided with a flow-guiding conical diffuser, and the cone angle α of the flow-guiding conical diffuser satisfies: 12° ≤ α ≤ 18°.

[0017] In a preferred embodiment of the present invention, the bottom of the support foot is provided with an elastic buffer layer, the buffer layer having a Shore hardness of 70A-90A.

[0018] In a preferred embodiment of this utility model, the pump body assembly surface inside the vortex chamber is provided with a quick-install flange, and the flange surface has an annular sealing groove and a bolt clearance hole.

[0019] In a preferred embodiment of this utility model, a power base positioning pin hole is provided at the bottom of the above-mentioned double support feet, and the hole diameter tolerance is H7 grade.

[0020] In a preferred embodiment of this utility model, the hydraulically optimized pump body is an integrally cast structure, and the material is high-strength aluminum alloy ZL114A.

[0021] The beneficial effects of this utility model embodiment are:

[0022] 1. Breakthrough improvement in hydraulic performance: The eccentric sinking vortex chamber with a height ratio of 3-4:2 expands the inlet negative pressure zone by more than 40%, and shortens the self-priming time to 1 / 3 of the original structure; The conical diffuser with α=12°-18° reduces inlet turbulence loss, and the measured flow rate is increased by 15%-22%;

[0023] 2. The pump body connection adopts a three-level pressure-resistant protection system. The main radial reinforcing ribs are right-angled triangular ribs with a 1.5-fold thickening at the root to disperse circumferential stress. The stepped circular ring array, with three layers of rings and secondary ribs, blocks stress concentration. The block-shaped connector transfers tangential loads to avoid resonance failure.

[0024] 3. The pump body is made of ZL114A integral casting, which avoids leakage from welding. The airtightness can pass the 1.6MPa pressure test 100%. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a side view of the hydraulically optimized pump body based on the eccentric vortex structure according to an embodiment of the present invention;

[0027] Figure 2 This is a cross-sectional view of the hydraulically optimized pump body based on the eccentric vortex structure according to an embodiment of the present invention;

[0028] Icons: Eccentric sinking vortex chamber 110; Axis 111; Quick-connect flange 112; Flow guide cone diffuser 113; Inlet shell 120; Outlet 130; Radial reinforcement assembly 140; Reinforcing rib 141; Stepped concentric ring array 142; Block connector 143; Secondary reinforcing rib 144; Support base 150; Double support feet 151; Elastic buffer layer 152. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0031] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0032] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0033] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0034] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0035] First Embodiment

[0036] Please refer to Figure 1 and 2 This embodiment provides a hydraulically optimized pump body based on an eccentric vortex chamber structure, including an eccentric submerged vortex chamber 110, which is an eccentric cylindrical structure with its axis 111 lower than the pump body assembly surface. One end of the cylinder is a closed end, which forms a high-pressure stagnation zone to guide the fluid to accelerate tangentially along the vortex chamber 110; the other end is an open end for connecting to the inlet housing 120, and the open end smoothly connects with the inlet housing to avoid inlet backflow; the top opening is provided with an outlet 130; and a radial reinforcement component 140 is provided at the closed end of the cylinder and a support base 150 is provided at the four corners of the bottom of the cylinder.

[0037] The ratio of the height h1 from the upper wall of the eccentric submerged vortex chamber 110 to the vortex chamber axis 111, and the ratio of the height h2 from the vortex chamber axis 111 to the lower wall of the eccentric submerged vortex chamber 110, is 3-4:2, employing an asymmetric flow field for high-efficiency conversion. In this embodiment, a representative intermediate value of 3.5:2 is selected. When the measured suction lift reaches 8.5m (conventional pumps ≤6m), the self-priming time is shortened by 42%, and water priming is completed within 25 seconds.

[0038] The radial reinforcement component 140 includes a vortex chamber 110 with a radially distributed reinforcing rib 141 on the outer wall centered on an eccentric point, a stepped concentric ring array 142 connecting the reinforcing rib 141, and a block-shaped connector 143 connecting the stepped concentric ring array 142. Compared with traditional mesh ribs, it can reduce the weight of the overall vortex shell.

[0039] Specifically, there are 6-10 reinforcing ribs 141, which are in the shape of right triangles and extend to the outer edge of the vortex chamber 110. The thickness of the root of the reinforcing rib 141 is 1.2-1.5 times the wall thickness of the vortex chamber 110. Compared with the traditional equal thickness ribs, it can improve the bending strength of the pump body connection.

[0040] The center of the reinforcing rib 141 is provided with a stepped concentric ring array 142, which includes at least three layers of reinforcing rings with progressively increasing diameters. Secondary reinforcing ribs 144 are evenly distributed on the outer wall of each reinforcing ring. The three layers of thin-walled rings and secondary ribs are used to improve the circumferential stiffness.

[0041] Adjacent reinforcing rings are rigidly connected by radially distributed block connectors 143. The axial projection of the block connectors 143 forms an angle of 30°-60° with the extension direction of the radial reinforcing ribs 141. The 30°-60° angled block connectors increase the load transfer path between rings by 1.8 times and reduce the peak stress by 45%.

[0042] The pump body assembly surface inside the vortex chamber 110 is provided with a quick-install flange 112, and the flange face has an annular sealing groove and bolt avoidance holes to shorten the disassembly and assembly time.

[0043] The support base 150 and the bottom of the vortex chamber 110 are provided with symmetrical double support legs 151, extending from radial reinforcing ribs 141. The support surfaces of the double support legs are trapezoidal structures with anti-slip textures, and their center distance L satisfies: 0.7D ≤ L ≤ 0.9D, where D is the outer diameter of the vortex chamber 110. An elastic buffer layer 152 is provided at the bottom of the support legs, with a Shore hardness of 70A-90A. Positioning pin holes for the power base are opened at the bottom of the double support legs, with a hole diameter tolerance of H7 grade.

[0044] The vortex chamber 110 is equipped with a flow-guiding conical diffuser 113, and the cone angle α of the flow-guiding conical diffuser satisfies: 12° ≤ α ≤ 18°.

[0045] The hydraulically optimized pump body is a one-piece cast structure, and the material is high-strength aluminum alloy ZL114A.

[0046] This specification describes examples of embodiments of the present invention, but does not imply that these embodiments illustrate and describe all possible forms of the present invention. It should be understood that the embodiments in the specification can be implemented in various alternative forms. The drawings are not necessarily drawn to scale; some features may be enlarged or reduced to show details of specific components. The specific structural and functional details disclosed should not be construed as limiting, but merely as a representative basis for teaching those skilled in the art to implement the present invention in various forms. Those skilled in the art will understand that multiple features illustrated and described with reference to any of the drawings can be combined with features illustrated in one or more other drawings to form embodiments not explicitly illustrated or described. The illustrated combinations of features provide representative embodiments for typical applications. However, various combinations and variations of features consistent with the teachings of the present invention may be used as needed for specific applications or implementations.

[0047] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A hydraulically optimized pump body based on an eccentric vortex chamber structure, characterized in that, include: An eccentrically recessed vortex chamber, wherein the vortex chamber is an eccentric cylindrical structure with its axis lower than the pump body mounting surface; The radially reinforced component has reinforcing ribs arranged radially around the eccentric point on the outer wall of the vortex chamber. The support base has two symmetrical support legs at the bottom of the vortex chamber, which extend from the radial reinforcing ribs.

2. The hydraulically optimized pump body based on the eccentric vortex chamber structure according to claim 1, characterized in that, The ratio of the height of the upper wall of the eccentric sunken vortex chamber to the vortex chamber axis, and the height of the vortex chamber axis to the lower wall of the eccentric sunken vortex chamber, is 3-4:

2.

3. The hydraulically optimized pump body based on the eccentric vortex chamber structure according to claim 1, characterized in that, The reinforcing ribs are provided in the form of 6-10 right-angled triangles, extending to the outer edge of the vortex chamber. The thickness of the root of the reinforcing ribs is 1.2-1.5 times the thickness of the vortex chamber wall.

4. The hydraulically optimized pump body based on the eccentric vortex chamber structure according to claim 1, characterized in that, The reinforcing rib has a stepped concentric ring array at its center, which includes at least three layers of reinforcing rings with progressively increasing diameters. Secondary reinforcing ribs are evenly distributed around the outer wall of each reinforcing ring. Adjacent reinforcing rings are rigidly connected by radially distributed block-shaped connectors. The axial projection of the block-shaped connectors forms an angle of 30°-60° with the extension direction of the radial reinforcing ribs.

5. The hydraulically optimized pump body based on an eccentric vortex chamber structure according to claim 1, characterized in that, The support surface of the double support feet is a trapezoidal structure with anti-slip texture, and the center distance L satisfies: 0.7D ≤ L ≤ 0.9D, where D is the outer diameter of the vortex.

6. The hydraulically optimized pump body based on an eccentric vortex chamber structure according to claim 1, characterized in that, The vortex chamber is equipped with a flow-guiding conical diffuser, and the cone angle α of the flow-guiding conical diffuser satisfies: 12° ≤ α ≤ 18°.

7. The hydraulically optimized pump body based on the eccentric vortex chamber structure according to claim 1, characterized in that, The bottom of the support foot is provided with an elastic buffer layer, which has a Shore hardness of 70A-90A.

8. The hydraulically optimized pump body based on the eccentric vortex chamber structure according to claim 1, characterized in that, The pump body assembly surface inside the vortex chamber is equipped with a quick-install flange, and the flange face has an annular sealing groove and bolt clearance holes.

9. The hydraulically optimized pump body based on the eccentric vortex chamber structure according to claim 1, characterized in that, The bottom of the dual support legs has a positioning pin hole for the power base, with a hole diameter tolerance of H7 grade.

10. The hydraulically optimized pump body based on the eccentric vortex chamber structure according to claim 1, characterized in that, The hydraulically optimized pump body is a one-piece cast structure, and the material is high-strength aluminum alloy ZL114A.

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