A double-impeller pump for pumping water

Abstract

The utility model discloses a kind of double-impeller pump water's impeller pump, including pump head body, water inlet, water outlet are equipped on pump head body, the water route that water inlet is connected with water outlet is equipped with the impeller group connected with the output shaft of driving motor, impeller group includes at least two series connection impellers, water inlet is located on the axial direction of impeller group, water outlet is located on the radial direction of impeller group.The utility model uses multiple impellers to pump water simultaneously, enhances the water pumping capacity of impeller pump, and further improves water pumping efficiency.

Description

Technical Field

[0001] This utility model relates to the field of fluid transport equipment technology, specifically to an impeller pump for pumping water with two impellers. Background Technology

[0002] Impeller pumps are commonly used fluid transport equipment. They are mainly driven by a motor to rotate the impeller at high speed. A low-pressure zone is formed at the center of the impeller. When the pump is started after being filled with liquid, the external liquid is drawn into the center of the impeller under atmospheric pressure. After entering the impeller, the liquid is driven to rotate at high speed by the blades. Under the action of centrifugal force, the liquid flows radially outward along the impeller, and the speed gradually increases, pumping the water that has entered the impeller pump to the outlet.

[0003] However, existing micro impeller pumps are basically pumping water with a single impeller. This type of pumping method has limited pumping capacity, resulting in low pumping efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a dual-impeller pump that enhances the pumping capacity of a micro impeller pump and thus improves pumping efficiency.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following solution: An impeller pump for pumping water with dual impellers includes a pump head body with an inlet and an outlet. An impeller assembly connected to the output shaft of a drive motor is provided on the water path connecting the inlet and the outlet. The impeller assembly includes at least two impellers connected in series. The inlet is located axially on the impeller assembly, and the outlet is located radially on the impeller assembly.

[0006] In this design, the dual-impeller pump uses a drive motor to rotate the output shaft, which in turn rotates the impeller assembly, causing at least two impellers to work in series. Liquid enters the first-stage impeller through the inlet, gains kinetic energy under centrifugal force, and is thrown towards the outer edge of the impeller. After deceleration and pressurization within the pump head, it flows into the inlet of the secondary impeller. Each impeller performs work on the liquid once, with energy accumulating at each stage, ultimately discharging the high-pressure liquid from the outlet (radially arranged). The inlet is arranged axially along the impeller assembly, conforming to the natural flow direction of the liquid and reducing suction resistance. The outlet is located radially within the impeller assembly, utilizing the characteristic that the centrifugal force direction aligns with the outlet direction to reduce energy loss and improve drainage efficiency. The simultaneous pumping of water by multiple impellers, with energy accumulating at each stage, significantly enhances the pumping capacity of the micro-impeller pump, thereby improving pumping efficiency.

[0007] Optionally, the impeller assembly includes a first impeller and a second impeller connected in series and located in the pump head body. The first impeller is located above the second impeller. The second impeller has an upward-facing connecting rod in the middle. One end of the connecting rod is connected to the output shaft, and the other end is connected to the middle of the first impeller. The first impeller has a first flow channel that communicates with the water inlet, and the second impeller has a second flow channel that communicates with the first flow channel and the water outlet.

[0008] Optionally, the pump head body is provided with a first water chamber and a second water chamber that are interconnected. The first impeller is located in the first water chamber, and the second impeller is located in the second water chamber. The first water chamber is connected to the water inlet and the first flow channel, and the second water chamber is connected to the water outlet and the second flow channel.

[0009] Optionally, the first impeller has a first water passage cavity at the middle of its top surface that connects the water passage between the first flow channel and the inlet, and the second impeller has a fourth water passage cavity at the middle of its top surface that connects the water passage between the second flow channel and the first flow channel.

[0010] Optionally, the pump head body is provided with a first sleeve and a second sleeve. The first sleeve is located above the second sleeve, with the opening of the first sleeve facing upward and the opening of the second sleeve facing downward. The inner cavity of the first sleeve forms a first water cavity, and the inner cavity of the second sleeve forms a second water cavity. The connecting rod passes through the second sleeve and the first sleeve from bottom to top. The connecting rod and the first sleeve form a second water passage cavity that communicates with the first water cavity, and the connecting rod and the second sleeve form a third water passage cavity that communicates with the second water cavity. The second water passage cavity and the third water passage cavity are connected.

[0011] Optionally, the bottom wall of the first sleeve is provided with a first water passage connecting the first water cavity and the second water passage, and the side wall of the second sleeve is provided with a second water passage connecting the outlet and the second passage.

[0012] Optionally, the connecting rod can rotate relative to the first sleeve and the second sleeve under the drive of the output shaft.

[0013] Optionally, the inner wall of the pump head is provided with a downward-facing first guide tube, which corresponds to the first water passage cavity. The inner diameter of the first guide tube is the same as the inner diameter of the water inlet. The outer side of the first guide tube is provided with a first retaining ring connected to the top surface of the first impeller, and there is a gap between the first retaining ring and the first guide tube.

[0014] Optionally, a second guide tube is provided on the inner wall of the second sleeve. The second guide tube corresponds to the fourth water passage cavity. The inner diameter of the second guide tube is the same as the inner diameter of the third water passage cavity. A second retaining ring is provided on the outer side of the second guide tube and connected to the top surface of the second impeller. There is a gap between the second retaining ring and the second guide tube.

[0015] Optionally, a sealing ring is pressed between the pump head body and the drive motor.

[0016] The beneficial effects of this utility model are: In this invention, the dual impeller pump drives the output shaft to rotate via a drive motor, which in turn drives the impeller assembly to rotate, thereby driving at least two impellers to work in series. Liquid enters the first-stage impeller from the inlet, gains kinetic energy under centrifugal force, and is thrown toward the outer edge of the impeller. After being decelerated and pressurized in the pump head, it flows into the inlet of the secondary impeller. Each impeller performs work on the liquid once, and the energy is accumulated step by step, finally discharging the high-pressure liquid from the outlet (arranged radially).

[0017] The inlet is arranged along the axial direction of the impeller assembly, which conforms to the natural flow direction of the liquid and reduces suction resistance. The outlet is located radially in the impeller assembly. By utilizing the characteristic that the centrifugal force direction is consistent with the outlet direction, energy loss is reduced and the discharge efficiency is improved. Multiple impellers are used to pump water simultaneously, and the energy is superimposed step by step, which greatly enhances the pumping capacity of the impeller pump and thus improves the pumping efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model.

[0019] Reference numerals: 01-Drive motor, 02-Output shaft, 03-Second impeller, 04-Sealing ring, 05-Second water chamber, 06-Pump head body, 07-Second sleeve, 08-First water passage, 09-First water chamber, 10-First flow channel, 11-First sleeve, 12-Inlet, 13-First impeller, 14-Screw, 15-Second water passage, 16-Connecting rod, 17-Third water passage, 18-Outlet, 19-Second water passage, 20-Second flow channel, 21-First guide tube, 22-First retaining ring, 23-First water passage, 24-Second guide tube, 25-Second retaining ring, 26-Fourth water passage. Detailed Implementation

[0020] The present invention will be further described in detail below with reference to the embodiments and accompanying drawings, but the implementation of the present invention is not limited thereto.

[0021] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "longitudinal", "lateral", "horizontal", "inner", "outer", "front", "rear", "top", "bottom", 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 utility model product 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.

[0022] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "have," "install," "connect," and "connect" 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. Example

[0023] A double impeller pump for pumping water includes a pump head body 06, on which an inlet 12 and an outlet 18 are provided. An impeller assembly connected to the output shaft 02 of a drive motor 01 is provided on the water passage connecting the inlet 12 and the outlet 18. The impeller assembly includes at least two impellers connected in series. The inlet 12 is located in the axial direction of the impeller assembly, and the outlet 18 is located in the radial direction of the impeller assembly.

[0024] This has been implemented, such as Figure 1 As shown, the dual impeller pump drives the output shaft 02 to rotate via the drive motor 01, which in turn drives the impeller assembly to rotate, thereby driving at least two impellers to work in series. The liquid enters the first-stage impeller from the inlet 12, gains kinetic energy under the action of centrifugal force and is thrown to the outer edge of the impeller. After being decelerated and pressurized in the pump head body 06, it flows into the inlet of the secondary impeller. Each impeller does work on the liquid once, and the energy is accumulated step by step. Finally, the high-pressure liquid is discharged from the outlet 18 (arranged radially).

[0025] The inlet 12 is arranged along the axial direction of the impeller assembly, which conforms to the natural flow direction of the liquid and reduces suction resistance. The outlet 18 is located in the radial direction of the impeller assembly. By utilizing the characteristic that the centrifugal force direction is consistent with the outlet direction, energy loss is reduced and the discharge efficiency is improved. Multiple impellers are used to pump water simultaneously, and the energy is superimposed step by step, which greatly enhances the pumping capacity of the impeller pump and thus improves the pumping efficiency.

[0026] Furthermore, the impeller assembly includes a first impeller 13 and a second impeller 03 connected in series and located within the pump head body 06. The first impeller 13 is located above the second impeller 03. The second impeller 03 has an upward-facing connecting rod 16 in the middle. One end of the connecting rod 16 is connected to the output shaft 02, and the other end is connected to the middle of the first impeller 13. The first impeller 13 has a first flow channel 10 that communicates with the inlet 12, and the second impeller 03 has a second flow channel 20 that communicates with the first flow channel 10 and the outlet 18.

[0027] Specifically, such as Figure 1As shown, the impeller assembly contains two impellers, which are existing closed impellers (with cover plates on both the top and bottom sides). There are flow channels between the blades. The two impellers are a first impeller 13 and a second impeller 03. The first impeller 13 is located above the second impeller 03. The second impeller 03 has an upward-facing connecting rod 16 in its middle section. The connecting rod 16 is integrally formed with the second impeller 03. The output of the drive motor 01 passes upward through the middle of the second impeller 03 and inserts into the connecting rod 16. The upper end of the connecting rod 16 is connected and fixed to the middle of the first impeller 13 by screws 14. The drive motor 01 drives the output shaft 02 to rotate. The output shaft 02 drives the first impeller 13 and the second impeller 03 to rotate synchronously via the connecting rod 16. The first flow channel 10 is the flow channel between the blades inside the first impeller 13, and the second flow channel 20 is the flow channel between the blades inside the second impeller 03. When the first impeller 13 rotates, it throws water out from the first flow channel 10 to achieve initial pressurization, and then delivers it to the second impeller 03. The second impeller 03 rotates and throws water out from the outlet 18 to achieve secondary pressurization. In this way, multiple impellers pump water at the same time, and the energy is superimposed step by step, which greatly enhances the pumping capacity of the impeller pump and thus improves the pumping efficiency.

[0028] Furthermore, the pump head body 06 is provided with a first water chamber 09 and a second water chamber 05 that are interconnected. The first impeller 13 is located in the first water chamber 09, and the second impeller 03 is located in the second water chamber 05. The first water chamber 09 is connected to the inlet 12 and the first flow channel 10, and the second water chamber 05 is connected to the outlet 18 and the second flow channel 20.

[0029] Specifically, the first impeller 13 and the second impeller 03 are installed in the first water chamber 09 and the second water chamber 05 respectively. Due to the characteristics of the impeller pump, it needs to be filled with water before it starts working. Therefore, the first water chamber 09 and the second water chamber 05 are connected so that water can fill the first water chamber 09 and the second water chamber 05, ensuring the normal operation of the impeller pump.

[0030] Furthermore, the first impeller 13 has a first water passage cavity 23 at the middle of its top surface, which connects the water passage between the first flow channel 10 and the inlet 12, and the second impeller 03 has a fourth water passage cavity 26 at the middle of its top surface, which connects the water passage between the second flow channel 20 and the first flow channel 10.

[0031] Specifically, the first water passage chamber 23 facilitates the entry of water from the inlet 12 into the first impeller 13, and the fourth water passage chamber 26 facilitates the entry of water from the first water passage chamber 09 into the second impeller 03.

[0032] Furthermore, the pump head body 06 is provided with a first sleeve 11 and a second sleeve 07. The first sleeve 11 is located above the second sleeve 07, with the opening of the first sleeve 11 facing upward and the opening of the second sleeve 07 facing downward. The inner cavity of the first sleeve 11 forms a first water cavity 09, and the inner cavity of the second sleeve 07 forms a second water cavity 05. The connecting rod 16 passes through the second sleeve 07 and the first sleeve 11 from bottom to top. The connecting rod 16 and the first sleeve 11 form a second water passage cavity 15 that communicates with the first water cavity 09, and the connecting rod 16 and the second sleeve 07 form a third water passage cavity 17 that communicates with the second water cavity 05. The second water passage cavity 15 and the third water passage cavity 17 are connected.

[0033] Furthermore, the bottom wall of the first sleeve 11 is provided with a first water passage 08 that connects the first water cavity 09 and the second water passage 15, and the side wall of the second sleeve 07 is provided with a second water passage 19 that connects the outlet 18 and the second passage 20.

[0034] Specifically, the first water passage 08 facilitates the entry of water in the first water chamber 09 into the second water chamber 15, and thus into the second water chamber 05. The second water passage 19 facilitates the throwing of water in the second passage 20 to the outlet 18.

[0035] Furthermore, the connecting rod 16 can rotate relative to the first sleeve 11 and the second sleeve 07 under the drive of the output shaft 02.

[0036] Furthermore, the inner wall of the pump head body 06 is provided with a downward-facing first guide tube 21, which corresponds to the first water passage cavity 23. The inner diameter of the first guide tube 21 is the same as the inner diameter of the water inlet. The outer side of the first guide tube 21 is provided with a first retaining ring 22 connected to the top surface of the first impeller 13, and there is a gap between the first retaining ring 22 and the first guide tube 21.

[0037] Specifically, the first guide tube 21 is integrally formed with the inner wall of the pump head body 06. The first guide tube 21 can guide a large amount of water to the first water passage chamber 23, thereby entering the interior of the first impeller 13, which can improve the water intake efficiency. There is a gap between the first baffle ring 22 and the first guide tube 21, which can avoid interference with the rotation of the first impeller 13. At the same time, when pumping water, a large amount of source water can be further pressurized through the first impeller 13.

[0038] Furthermore, a second guide cylinder 24 is provided on the inner wall of the second sleeve 07. The second guide cylinder 24 corresponds to the fourth water passage cavity 26. The inner diameter of the second guide cylinder 24 is the same as the inner diameter of the third water passage cavity 17. A second retaining ring 25 is provided on the outer side of the second guide cylinder 24 and is connected to the top surface of the second impeller 03. There is a gap between the second retaining ring 25 and the second guide cylinder 24.

[0039] Specifically, the second guide tube 24 is integrally formed with the inner wall of the second sleeve 07. The second guide tube 24 can guide a large amount of water to the fourth water passage chamber 26, thereby entering the interior of the second impeller 03, which can improve the water intake efficiency. There is a gap between the second baffle ring 25 and the second guide tube 24, which can avoid interference with the rotation of the second impeller 03. At the same time, when pumping water, a large amount of source water can be further pressurized by passing through the second impeller 03.

[0040] Furthermore, a sealing ring 04 is pressed between the pump head body 06 and the drive motor 01.

[0041] Specifically, the sealing ring 04 is used to seal the installation gap between the pump head body 06 and the drive motor 01 to prevent water in the second water chamber 05 from leaking to the outside.

[0042] The working principle of this utility model is as follows: Before starting the impeller pump, it needs to be primed to fill the first water chamber 09 and the second water chamber 05 with water. When the impeller pump starts, the output shaft 02 of the drive motor 01 drives the first impeller 13 and the second impeller 03 to rotate at high speed through the connecting rod 16. The high-speed rotation of the first impeller 13 generates a low-pressure zone in the middle. The source water from the inlet 12 enters the first impeller 13 through the first water passage 23 under atmospheric pressure. The first impeller 13 throws the water out from the first flow channel 10, thus compacting the water. During the initial pressurization, the ejected water enters the first water chamber 09, then flows through the first water passage 08 into the second water passage 15, and then through the third water passage 17 and the fourth water passage 26 into the second impeller 03. The high-speed rotation of the second impeller 03 ejects the water from the second flow passage 20, achieving secondary pressurization. Finally, the water is transported to the outlet 18 through the second water passage 19. By using multiple impellers to pump water simultaneously, the energy is superimposed step by step, greatly enhancing the pumping capacity of the micro impeller pump and thus improving the pumping efficiency.

[0043] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications, equivalent substitutions, and improvements made to the above embodiments based on the technical essence of the present utility model and within the spirit and principles of the present utility model shall still fall within the protection scope of the present utility model.

Claims

1. A double-impeller water pump, comprising a pump head body (06), wherein the pump head body (06) is provided with an inlet (12) and an outlet (18), characterized in that, The water path connecting the inlet (12) and outlet (18) is provided with an impeller assembly connected to the output shaft (02) of the drive motor (01). The impeller assembly includes at least two impellers connected in series. The inlet (12) is located in the axial direction of the impeller assembly, and the outlet (18) is located in the radial direction of the impeller assembly.

2. The impeller pump for water pumping with dual impellers according to claim 1, characterized in that, The impeller assembly includes a first impeller (13) and a second impeller (03) connected in series and located inside the pump head body (06). The first impeller (13) is located above the second impeller (03). The second impeller (03) has an upward-facing connecting rod (16) in the middle. One end of the connecting rod (16) is connected to the output shaft (02), and the other end is connected to the middle of the first impeller (13). The first impeller (13) has a first flow channel (10) inside that communicates with the inlet (12). The second impeller (03) has a second flow channel (20) inside that communicates with the first flow channel (10) and the outlet (18).

3. The impeller pump for water pumping with two impellers according to claim 2, characterized in that, The pump head body (06) is provided with a first water chamber (09) and a second water chamber (05) that are interconnected. The first impeller (13) is located in the first water chamber (09), and the second impeller (03) is located in the second water chamber (05). The first water chamber (09) is connected to the inlet (12) and the first flow channel (10), and the second water chamber (05) is connected to the outlet (18) and the second flow channel (20).

4. The impeller pump for water pumping with dual impellers according to claim 2, characterized in that, The first impeller (13) has a first water passage cavity (23) at the middle of the top surface, which connects the water passage between the first flow channel (10) and the inlet (12). The second impeller (03) has a fourth water passage cavity (26) at the middle of the top surface, which connects the water passage between the second flow channel (20) and the first flow channel (10).

5. The impeller pump for water pumping with two impellers according to claim 3, characterized in that, The pump head body (06) is provided with a first sleeve (11) and a second sleeve (07). The first sleeve (11) is located above the second sleeve (07). The opening of the first sleeve (11) faces upward, and the opening of the second sleeve (07) faces downward. The inner cavity of the first sleeve (11) forms a first water cavity (09), and the inner cavity of the second sleeve (07) forms a second water cavity (05). The connecting rod (16) passes through the second sleeve (07) and the first sleeve (11) from bottom to top. The connecting rod (16) and the first sleeve (11) form a second water passage cavity (15) that is connected to the first water cavity (09), and the connecting rod (16) and the second sleeve (07) form a third water passage cavity (17) that is connected to the second water cavity (05). The second water passage cavity (15) and the third water passage cavity (17) are connected.

6. The impeller pump for water pumping with dual impellers according to claim 5, characterized in that, The bottom wall of the first sleeve (11) is provided with a first water passage (08) that connects the first water cavity (09) and the second water passage cavity (15), and the side wall of the second sleeve (07) is provided with a second water passage (19) that connects the outlet (18) and the second passage (20).

7. The impeller pump for water pumping with dual impellers according to claim 5, characterized in that, The connecting rod (16) can rotate relative to the first sleeve (11) and the second sleeve (07) under the drive of the output shaft (02).

8. The impeller pump for water pumping with two impellers according to claim 2, characterized in that, The inner wall of the pump head body (06) is provided with a downward-facing first guide tube (21), which corresponds to the first water passage cavity (23). The inner diameter of the first guide tube (21) is the same as the inner diameter of the water inlet. The outer side of the first guide tube (21) is provided with a first retaining ring (22) connected to the top surface of the first impeller (13). There is a gap between the first retaining ring (22) and the first guide tube (21).

9. The impeller pump for water pumping with dual impellers according to claim 5, characterized in that, The second sleeve (07) has a second guide tube (24) on its inner wall. The second guide tube (24) corresponds to the fourth water passage cavity (26). The inner diameter of the second guide tube (24) is the same as the inner diameter of the third water passage cavity (17). The outer side of the second guide tube (24) is provided with a second retaining ring (25) connected to the top surface of the second impeller (03). There is a gap between the second retaining ring (25) and the second guide tube (24).

10. The impeller pump for water pumping with two impellers according to claim 1, characterized in that, A sealing ring (04) is pressed between the pump head body (06) and the drive motor (01).

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