A bottom suction pump

Abstract

The utility model discloses a bottom suction pump, including the shell and the motor assembly of being located in the shell, be provided with the water inlet and the water outlet that communicates with the water inlet on the shell, the motor assembly includes the movement core of being fixed in the shell and with the movement core is connected and rotates relatively the impeller of the movement core drive under the shell, the shell is provided with at least two flow channels, each flow channel is with the shaft center of the impeller as the central shaft and is arranged in the uniform interval of surrounding the central shaft, and each flow channel all includes the flow channel inclined plane that surrounds the central shaft and rises in the same direction from below to top, each flow channel all includes the flow channel entrance and flow channel export respectively located the upper and lower ends of flow channel, the flow channel entrance with the water inlet communicates, the flow channel export with the water outlet communicates. The utility model discloses simple structure, high efficiency can be applied to drip irrigation and the creation of landscape garden.

Description

Technical Field

[0001] This utility model relates to a water pump, more specifically a bottom suction pump. Background Technology

[0002] Water pumps are typically used in drip irrigation and landscaping. A water pump uses a motor to drive an impeller, generating force to draw water from a pool and transport it through pipes to where it is needed. Existing water pumps generally consist of a housing and a motor assembly housed within it. The housing has an inlet and an outlet connected to the inlet. The motor assembly includes a motor core fixed within the housing and an impeller connected to the motor core and rotating relative to the housing under its drive. The housing has a cavity connecting the inlet and outlet. The rotating impeller draws water in through the inlet, through the cavity, and out through the outlet. However, existing water pumps use a straight-through cavity design, resulting in relatively low efficiency. Utility Model Content

[0003] To address the technical problem of low working efficiency of existing water pumps, this utility model provides a bottom suction pump.

[0004] To solve the above-mentioned technical problems, the present invention adopts a bottom suction pump, including a housing and a motor assembly disposed within the housing. The housing is provided with an inlet and an outlet communicating with the inlet. The motor assembly includes a core fixed within the housing and an impeller connected to the core and rotating relative to the housing under the drive of the core. At least two flow channels are provided within the housing. Each flow channel is evenly spaced around the central axis of the impeller, and each flow channel includes a flow channel slope formed by rotating upwards in the same direction around the central axis from bottom to top. Each flow channel includes a flow channel inlet and a flow channel outlet located at the upper and lower ends of the flow channel, respectively. The flow channel inlet communicates with the inlet, and the flow channel outlet communicates with the outlet.

[0005] The angle of rotation of the inclined surface of the flow channel is greater than 30 degrees and less than 90 degrees.

[0006] The angle of rotation of the inclined surface of the flow channel is 45 degrees.

[0007] The flow channel comprises three.

[0008] The outer casing includes a bottom suction mesh cover, a bottom suction body located at the upper end of the bottom suction mesh cover, and a bottom suction top cover located at the upper end of the bottom suction body: the bottom suction mesh cover is provided with the water inlet, and the bottom suction top cover is provided with the water outlet at the center; The bottom suction body includes a main body shell and a vertically arranged motor positioning part located inside the main body shell and at the center of the main body shell. The motor core is fixed in the motor positioning part, and the impeller is located at the lower end of the motor core. The flow channel is located inside the bottom suction body and extends through the bottom suction body in the vertical direction. Each flow channel is arranged around the motor positioning part and is separated from the motor positioning part.

[0009] The bottom suction pump also includes a bottom suction cover fixedly connected to the lower end of the bottom suction body and covering the impeller from the lower end, the bottom suction cover comprising: The capping cavity is formed by a downward-facing recess of the upper surface of the bottom suction cap; the impeller is housed within the capping cavity; The cap inlet is located at the center of the cap cavity and penetrates the bottom suction cap in the vertical direction; the cap inlet communicates with the water inlet. The pressure cap slope includes multiple slopes, each of which corresponds one-to-one with the flow channel slope. Each pressure cap slope is evenly spaced around the impeller with the impeller axis as the central axis. The pressure cap is formed by rotating upward from the bottom surface of the pressure cap cavity in the same direction around the central axis, and the upper end of the pressure cap slope is connected to the lower end of the flow channel slope. The direction of rotation of the pressure cap slope is the same as the direction of rotation of the flow channel slope.

[0010] The angle of rotation of the cap slope is 30-90 degrees.

[0011] The bottom suction cap includes: The upper cover shell has an upward-facing recessed cavity on its lower surface; the upper surface of the upper cover shell has a water outlet that penetrates the upper cover shell in a vertical direction at its center; The inner shell of the upper cover is housed in the cavity of the upper cover and is fixedly connected to the outer shell of the upper cover; The inner shell of the upper cover includes: A guide ramp is provided at the upper end of the inner shell of the upper cover and is in the shape of a trumpet that gradually narrows from bottom to top; the top surface of the guide ramp is located directly below the water outlet; A partition plate is evenly distributed on the upper surface of the guide slope. The upper surface of the guide slope, the inner side of the upper cover cavity, and the partition plate form multiple guide cavities. The upper end of each guide cavity is connected to the water outlet. The guide cavities are arranged one-to-one with the flow channels. The inner shell base is tightly fixedly connected to the upper cover shell. The inner shell base is provided with a plurality of evenly spaced inner shell through holes. Each inner shell through hole corresponds to each flow channel and connects the flow channel to the guide cavity.

[0012] The upper cover shell and the upper cover inner shell are fixed together by ultrasonic welding.

[0013] The direction of rotation of the inclined surface of the flow channel is the same as the direction of rotation of the impeller.

[0014] This invention features a housing and a motor assembly. The housing has an inlet and an outlet communicating with the inlet. Inside the housing are at least two flow channels, each evenly spaced around the impeller's axis. Each flow channel includes a ramp that rotates upwards around the axis from bottom to top. Each flow channel has an inlet and an outlet located at its upper and lower ends, respectively. The inlet communicates with the inlet, and the outlet communicates with the outlet. Thus, the impeller's rotation drives water to enter through the inlet, flow through at least two separate flow channels, and exit through the outlet. Furthermore, the ramped flow channels optimize the flow channel design, improve fluid flow characteristics, and enhance the pump's efficiency. Attached Figure Description

[0015] The present invention will now be described in detail with reference to the embodiments and accompanying drawings, wherein: Figure 1 This is a structural diagram of the bottom suction pump of this utility model; Figure 2 This is a structural diagram of the bottom suction pump of this utility model from another perspective; Figure 3 This is an exploded view of the bottom suction pump of this utility model; Figure 4 This is an exploded view of the bottom suction pump of this utility model from another perspective; Figure 5 This is a front view of the bottom suction pump of this utility model; Figure 6 yes Figure 5 Cross-sectional view at point AA; Figure 7 This is a structural diagram of the bottom suction body of this utility model; Figure 8 This is a cross-sectional view of the bottom suction body and the bottom suction top cover of this utility model. Detailed Implementation

[0016] The specific embodiments of this utility model are further described below with reference to the accompanying drawings: Please see also Figures 1 to 8 This utility model's bottom-suction pump includes a housing 1 and a motor assembly 2 housed within the housing. Wherein: The outer casing 1 is provided with an inlet 11 and an outlet 12 communicating with the inlet. The motor assembly 2 includes a core 21 fixed inside the outer casing and an impeller 22 connected to the core and rotating relative to the outer casing under the drive of the core. At least two flow channels 13 are provided inside the outer casing 1. Each flow channel 13 is evenly spaced around the central axis with the axis of the impeller as the central axis. Each flow channel 13 includes a flow channel slope 131 formed by rotating upward around the central axis from bottom to top. Each flow channel 13 includes a flow channel inlet 132 and a flow channel outlet 133 located at the upper and lower ends of the flow channel, respectively. The flow channel inlet 132 communicates with the inlet 11, and the flow channel outlet 133 communicates with the outlet 12.

[0017] Each flow channel is connected only at the inlet and outlet, with the rest separated, ensuring that the water flow in each channel is independent and does not interfere with each other. Furthermore, the inclined surface of the flow channel guides the rotating water brought in by the impeller, allowing it to flow out of the outlet, thus improving fluid flow characteristics and increasing pump efficiency.

[0018] In this specific embodiment, the rotation direction of the flow channel slope is consistent with the rotation direction of the impeller, thereby reducing water resistance and improving fluid flow performance.

[0019] In this specific embodiment, the flow channel includes three channels. The three flow channels are evenly spaced around the axis of the impeller.

[0020] In this specific embodiment, the angle of rotation of the flow channel slope is greater than 30 degrees and less than 90 degrees. The angle of rotation of the flow channel slope should not be too large, as an excessively large angle will increase the resistance to water flow; conversely, an excessively small angle will also increase the resistance to water flow, failing to improve the flow characteristics. In this specific embodiment, the angle of rotation of the flow channel slope is 45 degrees.

[0021] In this specific embodiment, the outer shell 1 includes a bottom suction mesh cover 3, a bottom suction body 4 disposed on the upper end of the bottom suction mesh cover, and a bottom suction top cover 5 disposed on the upper end of the bottom suction body: the bottom suction mesh cover 3 is provided with the water inlet 11, and the bottom suction top cover 5 is provided with the water outlet 12 at the center.

[0022] The bottom suction body 4 includes a main body shell 41 and a vertically arranged motor positioning part 42 located inside the main body shell and at the center of the main body shell. The motor core 21 is fixed in the motor positioning part 42, and the impeller 22 is located at the lower end of the motor core 21.

[0023] The flow channel 13 is located inside the bottom suction body and extends through the bottom suction body in the vertical direction. Each flow channel is arranged around the motor positioning part and is separated from the motor positioning part.

[0024] In this specific embodiment, the bottom suction pump further includes a bottom suction cover 6 fixedly connected to the lower end of the bottom suction body and covering the impeller from the lower end. The bottom suction cover 6 includes a cover cavity 61, a cover inlet 62, and a cover inclined surface 63. Wherein: The cap cavity 61 is formed by the downward recess of the upper surface of the bottom suction cap; the impeller 22 is housed in the cap cavity.

[0025] The cap inlet 62 is located at the center of the cap cavity and penetrates the bottom suction cap in the vertical direction. The cap inlet is connected to the water inlet.

[0026] The capping slope 63 comprises multiple slopes, each corresponding one-to-one with the flow channel slope. Each capping slope is evenly spaced around the impeller's axis. The capping surface rotates upwards from the bottom surface of the capping cavity in the same direction around the central axis, and the upper end of each capping slope connects to the lower end of the flow channel slope. The direction of rotation of the capping slope is the same as that of the flow channel slope. The upper end of the capping slope communicates with the flow channel inlet.

[0027] The impeller rotation drives the water flow from the inlet to the gland cavity, and then the water flow is guided into the flow channel slope by the gland slope, which further improves the flow characteristics of the fluid.

[0028] In this specific embodiment, three inclined surfaces of the cap are provided, and the angle of rotation of the inclined surfaces of the cap is 30-90 degrees, preferably 45 degrees.

[0029] In this specific embodiment, the bottom suction cover 5 includes a cover shell 51 and an inner cover shell 52. Wherein: The lower surface of the upper cover housing 51 is recessed upward to form an upper cover cavity 511; the upper surface of the upper cover housing 51 is provided with a water outlet 12 that penetrates the upper cover housing in the vertical direction at the center.

[0030] The inner shell 52 of the upper cover is housed in the upper cover cavity and is fixedly connected to the upper cover shell.

[0031] The inner shell 52 of the upper cover includes a guide slope 521, a partition plate 522, and an inner shell base 523. Wherein: The guide slope 521 is located at the upper end of the inner shell of the upper cover and is in the shape of a trumpet that gradually narrows from bottom to top; the top surface 5211 of the guide slope is located directly below the water outlet.

[0032] The partition plates 522 are evenly distributed on the upper surface of the guide slope. The upper surface of the guide slope, the inner side of the upper cover cavity, and the partition plates form a plurality of guide cavities 5221. The upper end of each guide cavity 5221 communicates with the water outlet 12. The guide cavities are arranged one-to-one with the flow channels. The guide cavities communicate with the outlet of the flow channels. In this specific embodiment, there are three guide cavities.

[0033] The inner shell base 523 is tightly fixed to the upper cover shell. The inner shell base is provided with a plurality of evenly spaced inner shell through holes 5231. Each inner shell through hole corresponds to each flow channel and connects the flow channel to the guide cavity.

[0034] Water flowing from each channel enters the corresponding guide cavity through the corresponding inner shell through-hole, and then flows out through the outlet. The inclined guide surface design makes the water flow smoother and avoids the formation of spiral water flow, thus achieving a more ideal water output effect.

[0035] In this specific embodiment, the upper cover shell and the upper cover inner shell are fixed together by ultrasonic welding. Replacing traditional screw fixing with ultrasonic welding not only reduces the number of parts but also lowers labor costs and simplifies the production process.

[0036] This invention features a housing and a motor assembly. The housing has an inlet and an outlet communicating with the inlet. Inside the housing are at least two flow channels, each evenly spaced around the impeller's axis. Each flow channel includes a ramp that rotates upwards around the axis from bottom to top. Each flow channel has an inlet and an outlet located at its upper and lower ends, respectively. The inlet communicates with the inlet, and the outlet communicates with the outlet. Thus, the impeller's rotation drives water to enter through the inlet, flow through at least two separate flow channels, and exit through the outlet. Furthermore, the ramped flow channels optimize the flow channel design, improve fluid flow characteristics, and enhance the pump's efficiency.

[0037] In this specific embodiment, the bottom-suction pump is a centrifugal pump. This invention, through dual optimization of the flow channel structure and assembly process, effectively improves the working efficiency of the centrifugal pump, reduces manufacturing costs, and enhances the overall product quality, demonstrating significant practical application value.

[0038] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A bottom-suction pump, comprising a housing and a motor assembly disposed within the housing, wherein the housing is provided with an inlet and an outlet communicating with the inlet, and the motor assembly includes a motor core fixed within the housing and an impeller connected to the motor core and rotating relative to the housing under the drive of the motor core, characterized in that: The housing contains at least two flow channels, each flow channel being evenly spaced around the central axis of the impeller. Each flow channel includes a flow channel slope that rotates upwards around the central axis from bottom to top. Each flow channel includes a flow channel inlet and a flow channel outlet located at the upper and lower ends of the flow channel, respectively. The flow channel inlet is connected to the water inlet, and the flow channel outlet is connected to the water outlet.

2. The bottom suction pump according to claim 1, characterized in that: The angle of rotation of the inclined surface of the flow channel is greater than 30 degrees and less than 90 degrees.

3. The bottom suction pump according to claim 2, characterized in that: The angle of rotation of the inclined surface of the flow channel is 45 degrees.

4. The bottom suction pump according to claim 1, characterized in that: The flow channel comprises three.

5. The bottom suction pump according to claim 1, characterized in that: The outer casing includes a bottom suction mesh cover, a bottom suction body located at the upper end of the bottom suction mesh cover, and a bottom suction top cover located at the upper end of the bottom suction body: the bottom suction mesh cover is provided with the water inlet, and the bottom suction top cover is provided with the water outlet at the center; The bottom suction body includes a main body shell and a vertically arranged motor positioning part located inside the main body shell and at the center of the main body shell. The motor core is fixed in the motor positioning part, and the impeller is located at the lower end of the motor core. The flow channel is located inside the bottom suction body and extends through the bottom suction body in the vertical direction. Each flow channel is arranged around the motor positioning part and is separated from the motor positioning part.

6. The bottom suction pump according to claim 5, characterized in that: The bottom suction pump also includes a bottom suction cover fixedly connected to the lower end of the bottom suction body and covering the impeller from the lower end, the bottom suction cover comprising: The capping cavity is formed by a downward-facing recess of the upper surface of the bottom suction cap; the impeller is housed within the capping cavity; The cap inlet is located at the center of the cap cavity and penetrates the bottom suction cap in the vertical direction; the cap inlet communicates with the water inlet. The pressure cap slope includes multiple slopes, each of which corresponds one-to-one with the flow channel slope. Each pressure cap slope is evenly spaced around the impeller with the impeller axis as the central axis. The pressure cap is formed by rotating upward from the bottom surface of the pressure cap cavity in the same direction around the central axis, and the upper end of the pressure cap slope is connected to the lower end of the flow channel slope. The direction of rotation of the pressure cap slope is the same as the direction of rotation of the flow channel slope.

7. The bottom suction pump according to claim 6, characterized in that: The angle of rotation of the cap slope is 30-90 degrees.

8. The bottom suction pump according to claim 6, characterized in that: The bottom suction cap includes: The upper cover shell has an upward-facing recessed cavity on its lower surface; the upper surface of the upper cover shell has a water outlet that penetrates the upper cover shell in a vertical direction at its center; The inner shell of the upper cover is housed in the cavity of the upper cover and is fixedly connected to the outer shell of the upper cover; The inner shell of the upper cover includes: A guide ramp is provided at the upper end of the inner shell of the upper cover and is in the shape of a trumpet that gradually narrows from bottom to top; the top surface of the guide ramp is located directly below the water outlet; A partition plate is evenly distributed on the upper surface of the guide slope. The upper surface of the guide slope, the inner side of the upper cover cavity, and the partition plate form multiple guide cavities. The upper end of each guide cavity is connected to the water outlet. The guide cavities are arranged one-to-one with the flow channels. The inner shell base is tightly fixedly connected to the upper cover shell. The inner shell base is provided with a plurality of evenly spaced inner shell through holes. Each inner shell through hole corresponds to each flow channel and connects the flow channel to the guide cavity.

9. The bottom suction pump according to claim 8, characterized in that: The upper cover shell and the upper cover inner shell are fixed together by ultrasonic welding.

10. The bottom suction pump according to claim 1, characterized in that: The direction of rotation of the inclined surface of the flow channel is the same as the direction of rotation of the impeller.

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