Impeller pump and spraying system

Abstract

The utility model belongs to the technical field of hydraulic transmission, and discloses an impeller pump and a spraying system. The impeller pump comprises a motor, a pump body and an isolation support, the motor comprises a motor shell, an output shaft and a first magnetic part, the pump body comprises a volute, an impeller and a second magnetic part, the isolation support is arranged between the motor shell and the volute and used for preventing liquid in the pump body from entering the motor, and the impeller is rotationally supported between the volute and the isolation support. The first magnetic part is in transmission connection with an output shaft of the motor, the second magnetic part is fixedly connected to the side, close to the motor, of the impeller, the first magnetic part and the second magnetic part are located on the two sides of the isolation support in the axis direction of the output shaft, and when the first magnetic part rotates, the second magnetic part can be driven to rotate through magnetic force. The impeller pump is compact in radial structure and high in water pumping efficiency.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic transmission technology, and in particular to an impeller pump and a spraying system. Background Technology

[0002] An impeller pump is a device that uses an impeller to drive a liquid at high speed, transferring mechanical energy to the liquid and thus transporting it. Conventional impeller pumps typically use a motor rigidly connected to the impeller to drive its rotation. To prevent liquid from entering the motor and causing damage, a waterproof layer is usually added to the outside of the motor rotor. However, this waterproof layer increases the air gap between the motor rotor and stator, resulting in lower motor efficiency.

[0003] In the prior art, an impeller pump includes an impeller and a motor. The motor includes a motor shaft and a first magnetic component fixed to the motor shaft. The impeller includes an impeller body and a second magnetic component. The first magnetic component and the second magnetic component are nested together. When the motor shaft rotates, the first magnetic component in the inner ring drives the second magnetic component in the outer ring to rotate, which in turn drives the impeller body to rotate. The liquid in the pump body is prevented from entering the motor by an isolator disposed between the pump body and the motor.

[0004] However, since the first and second magnetic components need to be nested, the radial dimension of the impeller pump increases, which is not conducive to the arrangement of the impeller pump. At the same time, since the second magnetic component located in the impeller pump cavity needs to be nested in the first magnetic component, the second magnetic component is generally designed to be larger. Without redesigning the pump body, the volume of the pump body cavity occupied by the second magnetic component reduces the volume of the pump body cavity that can be used for pumping water, thus reducing the pumping efficiency of the impeller pump. Utility Model Content

[0005] The purpose of this invention is to provide an impeller pump and a spraying system, wherein the impeller pump has a compact radial structure and high pumping efficiency.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] On one hand, an impeller pump is provided, including a motor, a pump body, and an isolation bracket. The motor includes a motor housing, an output shaft, and a first magnetic component. The pump body includes a volute, an impeller, and a second magnetic component. The isolation bracket is disposed between the motor housing and the volute and is used to prevent liquid in the pump body from entering the motor. The impeller is rotatably supported between the volute and the isolation bracket. The first magnetic component is driven to the output shaft of the motor, and the second magnetic component is fixedly connected to the side of the impeller near the motor. The first and second magnetic components are located on opposite sides of the isolation bracket along the axial direction of the output shaft. When the first magnetic component rotates, it can drive the second magnetic component to rotate through magnetic force.

[0008] Preferably, the isolation bracket has a first groove on the side near the motor, at least a portion of the first magnetic element is disposed in the first groove, and / or; the isolation bracket has a second groove on the side near the pump body, at least a portion of the second magnetic element is disposed in the second groove.

[0009] Preferably, both the first magnetic element and the second magnetic element are ring structures, and the axes of the first magnetic element and the second magnetic element coincide.

[0010] Preferably, the impeller includes an impeller body and an impeller shaft. The impeller shaft is fixedly supported between the volute and the isolation bracket. The impeller body is rotatably sleeved on the impeller shaft. The second magnetic component is installed on the impeller body and sleeved on the impeller shaft.

[0011] Preferably, the impeller also includes a wear-resistant bushing, which is rotatably sleeved on the impeller shaft, and the impeller body is fixedly connected to the wear-resistant bushing.

[0012] Preferably, the impeller further includes a first gasket, which is fixed to the impeller shaft and abuts against the wear-resistant bushing and the isolation bracket, and the first gasket is rotatable relative to at least one of the wear-resistant bushing and the isolation bracket; and / or, the impeller pump includes a second gasket, which is fixed to the impeller shaft and disposed between the wear-resistant bushing and the volute, and the second gasket has a clearance fit with at least one of the wear-resistant bushing and the volute.

[0013] Preferably, the motor also includes a stator and a rotor, the stator is fixed in position relative to the motor housing, the rotor is fixed in position relative to the output shaft, and the stator is fitted onto the rotor with a gap.

[0014] Preferably, the gap between the stator and the rotor is 0.3 mm to 0.5 mm.

[0015] Preferably, a seal is provided between the isolation bracket and the volute; and / or, a seal is provided between the isolation bracket and the motor housing.

[0016] On the other hand, a spraying system is provided, wherein the spraying system includes nozzles and an impeller pump of any of the above-mentioned technical solutions, the impeller pump being used to pump liquid to the nozzles.

[0017] The beneficial effects of this utility model are as follows: It provides an impeller pump and a spraying system. The impeller pump reduces its radial dimension by arranging a first magnetic component and a second magnetic component at parallel intervals, which facilitates the arrangement of the impeller pump. At the same time, compared with the first and second magnetic components, the first magnetic component of this impeller pump occupies a smaller volume in the pump body cavity, so that for the same size impeller pump, the fluid in the cavity can occupy more space, resulting in high pumping efficiency of the impeller pump. Attached Figure Description

[0018] Figure 1 This is an isometric view of the impeller pump provided by this utility model;

[0019] Figure 2 This is an exploded view of the impeller pump provided by this utility model;

[0020] Figure 3 This is a cross-sectional view of the impeller pump provided by this utility model;

[0021] Figure 4 This is an exploded view of the motor of the impeller pump provided by this utility model.

[0022] Figure 5 This is an exploded view of the impeller of the impeller pump provided by this utility model;

[0023] Figure 6 yes Figure 3 A magnified view of part A in the middle.

[0024] In the diagram: 1. Motor; 11. Motor housing; 12. Output shaft; 13. First magnetic component; 14. Stator; 15. Rotor; 16. Clearance;

[0025] 2. Pump body; 21. Volute; 22. Impeller; 221. Impeller body; 222. Impeller shaft; 223. Wear-resistant bushing; 224. First gasket; 225. Second gasket; 23. Second magnetic component;

[0026] 3. Isolation bracket; 4. Sealing element. Detailed Implementation

[0027] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0028] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between 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.

[0029] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0030] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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" and "second" are only used for distinction in description and have no special meaning.

[0031] On the one hand, please refer to Figures 1 to 6 This embodiment provides an impeller pump, including a motor 1, a pump body 2, and an isolation bracket 3. The motor 1 includes a motor housing 11, an output shaft 12, and a first magnetic element 13. The pump body 2 includes a volute 21, an impeller 22, and a second magnetic element 23. The isolation bracket 3 is disposed between the motor housing 11 and the volute 21. The isolation bracket 3 is used to prevent liquid in the pump body 2 from entering the motor 1. The impeller 22 is rotatably supported between the volute 21 and the isolation bracket 3. The first magnetic element 13 is tractively connected to the output shaft 12 of the motor 1, and the second magnetic element 23 is fixedly connected to the side of the impeller 22 near the motor 1. The first magnetic element 13 and the second magnetic element 23 are located on both sides of the isolation bracket 3 along the axial direction of the output shaft 12. When the first magnetic element 13 rotates, it can drive the second magnetic element 23 to rotate through magnetic force. With this configuration, by placing the first magnetic element 13 and the second magnetic element 23 on both sides of the isolation bracket 3 along the axial direction of the output shaft 12, compared to the impeller pump with a nested arrangement of the first magnetic element 13, isolation bracket 3, and second magnetic element 23, the technical solution of this embodiment reduces the radial dimension of the impeller pump, facilitating its arrangement. Simultaneously, the reduced size of the first magnetic element 13 occupies less space within the pump body 2, allowing the fluid in the pump body to occupy more space for the same size impeller pump, thereby improving its pumping efficiency. Since there is no rigid connection between the output shaft 12 of the motor 1 and the impeller 22 of the pump body 2, the rotor 15 of the motor 1 can still rotate even when the impeller 22 is jammed, effectively protecting the motor 1 from damage.

[0032] Specifically, the isolation bracket 3 is bolted to the motor housing 11. This arrangement facilitates the assembly and disassembly of the impeller pump; at the same time, it facilitates the inspection and maintenance of the internal structure of the impeller pump, reducing maintenance costs.

[0033] Alternatively, please refer to Figure 2 and Figure 3 The isolation bracket 3 has a first groove on the side near the motor 1, and at least a portion of the first magnetic element 13 is disposed in the first groove. This arrangement, with at least a portion of the first magnetic element 13 disposed in the first groove, makes the impeller pump radially compact, reduces the radial dimension of the impeller pump, and facilitates the placement of the impeller pump.

[0034] Alternatively, please refer to Figure 2 and Figure 3 The isolation bracket 3 has a second groove on the side near the pump body 2, and at least a portion of the second magnetic element 23 is disposed in the second groove. This arrangement makes the impeller pump radially compact, reducing its radial dimensions and facilitating its placement. Simultaneously, by having at least a portion of the second magnetic element 23 disposed in the second groove, the space occupied by the second magnetic element 23 within the pump body 2 is reduced, thereby increasing the liquid capacity of the pump body 2 and improving the pumping efficiency of the impeller pump.

[0035] Alternatively, please refer to Figure 2 Both the first magnetic element 13 and the second magnetic element 23 are annular structures, and the axes of the first magnetic element 13 and the second magnetic element 23 coincide. The annular structure allows the first magnetic element and the second magnetic element 23 to be respectively fitted onto the output shaft 12 of the motor 1 and the impeller shaft 222, making full use of space and forming a compact transmission system. At the same time, since the axes of the first magnetic element 13 and the second magnetic element 23 coincide, the direction of the magnetic force between the first magnetic element 13 and the second magnetic element 23 is always along the axis, reducing the energy loss caused by the component force generated due to the skew of the force direction, thereby improving the efficiency of the entire transmission system.

[0036] Alternatively, please refer to Figure 3 and Figure 5The impeller includes an impeller body 221 and an impeller shaft 222. The impeller shaft 222 is fixedly supported between the volute 21 and the isolation bracket 3. The impeller body 221 is rotatably sleeved on the impeller shaft 222. A second magnetic component 23 is mounted on the impeller body 221 and sleeved on the impeller shaft 222. Preferably, the second magnetic component 23 is integrated with the impeller body 221. This configuration tightly integrates the impeller shaft 222 (used for mechanical transmission) and the second magnetic component 23 (used for magnetic drive) into a single integrated assembly, reducing the number of parts and connection points, and lowering assembly complexity and failure risk. Simultaneously, the second magnetic component 23 can directly transmit the magnetically driven power to the impeller body 221, reducing energy loss in intermediate stages and improving transmission efficiency. The impeller shaft 222, as a supporting component, provides stable mechanical support for the impeller body 221 and the second magnetic component 23, enhancing the structural strength and reliability of the entire system.

[0037] Optionally, the impeller 22 also includes a wear-resistant bushing 223, which is rotatably fitted onto the impeller shaft 222, and the impeller body 221 is fixedly connected to the wear-resistant bushing 223. This arrangement avoids wear caused by friction between the impeller body 221 and the impeller shaft 222 during rotation, thus extending the service life of both the impeller body 221 and the impeller shaft 222. Simultaneously, the relatively smooth surface of the wear-resistant bushing 223 reduces the friction between the impeller body 221 and the impeller shaft 222, allowing the impeller body 221 to rotate more smoothly around the impeller shaft 222, thereby improving the transmission efficiency of the entire system.

[0038] Preferably, the wear-resistant bushing 223 can be made of ceramic. In other embodiments, the wear-resistant bushing 223 can also be made of silicon carbide. This embodiment does not limit the material of the wear-resistant bushing 223.

[0039] In other embodiments, the impeller shaft 222 can be rotatably supported between the volute 21 and the isolation bracket 3, with the impeller body 221 sleeved on the impeller shaft 222. A second magnetic element 23 is mounted on the impeller body 221 and also sleeved on the impeller shaft 222. The relative positions of the impeller body 221 and the impeller shaft 222 are fixed. When the first magnetic element 13 drives the second magnetic element 23 to rotate, the impeller body 221 and the impeller shaft 222 rotate synchronously between the volute 21 and the isolation bracket 3.

[0040] Alternatively, please refer to Figure 3The impeller 22 also includes a first washer 224, which is fixed to the impeller shaft 222 and abuts against the wear-resistant bushing 223 and the isolation bracket 3. The first washer 224 can rotate relative to at least one of the wear-resistant bushing 223 and the isolation bracket 3. This arrangement avoids wear caused by friction between the wear-resistant bushing 223 and the impeller body 221 shaft and the isolation bracket 3. At the same time, the first washer 224 abutting against the wear-resistant bushing 223 and the isolation bracket 3 prevents radial runout of the wear-resistant bushing 223 and the impeller body 221 during rotation, which could cause vibration and noise, or even reduce the pumping efficiency of the impeller pump.

[0041] Alternatively, please refer to Figure 3 The impeller pump includes a second gasket 225, which is fixed to the impeller shaft 222 and positioned between the wear-resistant bushing 223 and the volute 21. The second gasket 225 engages with at least one of the wear-resistant bushing 223 and the volute 21 with a clearance 16. This arrangement prevents wear caused by friction between the wear-resistant bushing 223 and the impeller shaft 222 and the isolation bracket 3. Simultaneously, the clearance 16 engagement of the second gasket 225 with at least one of the wear-resistant bushing 223 and the volute 21 prevents the impeller body 221 from becoming stuck between the isolation bracket 3 and the volute 21, ensuring that the impeller body 221 can rotate around the impeller shaft 222.

[0042] Preferably, the first gasket 224 and the second gasket 225 are made of ceramic material. This arrangement further ensures the wear resistance and corrosion resistance of the first gasket 224 and the second gasket 225. In other embodiments, the first gasket 224 and the second gasket 225 may also be made of silicon carbide material; this embodiment does not limit the material of the first gasket 224 and the second gasket 225.

[0043] Alternatively, please refer to Figure 3 , Figure 4 and Figure 6 The motor 1 also includes a stator 14 and a rotor 15. The stator 14 is fixed in position relative to the motor housing 11, and the rotor 15 is fixed in position relative to the output shaft 12. A gap 16 is fitted onto the rotor 15 through the stator 14. This arrangement, with the stator 14 fitted onto the rotor 15 through the gap 16, ensures that the rotor 15 can rotate freely within the stator 14 cavity, avoiding direct contact and friction between the rotor 15 and the stator 14, thereby preventing mechanical wear and malfunctions.

[0044] Alternatively, please refer to Figure 3A sealing element 4 is provided between the isolation bracket 3 and the volute 21. Preferably, the sealing element 4 is a sealing ring. With this configuration, the sealing element 4 can effectively prevent liquid from leaking from the gap 16 between the volute 21 and the isolation bracket 3, thereby avoiding liquid waste and environmental pollution, and ensuring the operational reliability of the impeller pump. At the same time, the sealing element 4 can prevent external dust, moisture and other impurities from entering the interior of the volute 21, protecting the internal components from contamination and corrosion, thereby improving the service life and operating efficiency of the impeller pump.

[0045] Alternatively, please refer to Figure 3 A seal 4 is provided between the isolation bracket 3 and the motor housing 11. With this arrangement, the seal 4 can prevent the motor 1 from being exposed to dust and water, preventing liquid in the pump body 2 from entering the motor 1 and causing motor 1 failure. At the same time, since the seal 4 is provided between the isolation bracket 3 and the motor housing 11, it is not necessary to use additional sealant or other materials between the stator 14 and the rotor 15 for dust and water prevention, thus reducing the gap 16 between the stator 14 and the rotor 15.

[0046] Optionally, the gap 16 between the stator 14 and the rotor 15 is 0.3mm to 0.5mm. This setting reduces the gap 16 between the stator 14 and the rotor 15, thereby reducing the magnetic reluctance and magnetic flux leakage of the motor 1 and improving the efficiency of the motor 1.

[0047] On the other hand, a spraying system is provided, comprising a nozzle and the aforementioned impeller pump, the impeller pump being used to pump liquid to the nozzle. Specifically, the spraying system can be used in agricultural production, such as spraying pesticides. In other embodiments, the spraying system can also be applied to fire prevention and dust suppression in the construction industry, and cooling and lubrication in the industrial industry.

[0048] The working principle of the impeller pump provided in this embodiment is as follows:

[0049] When the stator 14 of the motor 1 is energized, the rotor 15 drives the output shaft 12 to rotate under the action of electromagnetic induction, which in turn drives the first magnetic component 13 to rotate. When the first magnetic component 13 rotates, it drives the second magnetic component 23 and the impeller body 221 to rotate around the impeller shaft 222 through magnetic force, and the liquid is sucked into the inner cavity of the pump body 2. An isolation bracket 3 is provided between the motor 1 and the pump body 2 to prevent the liquid in the inner cavity of the pump body 2 from entering the motor 1 and damaging the motor 1.

[0050] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. An impeller pump, comprising a motor (1), a pump body (2), and an isolation bracket (3), wherein the motor (1) comprises a motor housing (11), an output shaft (12), and a first magnetic element (13); the pump body (2) comprises a volute (21), an impeller (22), and a second magnetic element (23); the isolation bracket (3) is disposed between the motor housing (11) and the volute (21); the isolation bracket (3) is used to prevent liquid in the pump body (2) from entering the motor (1); and the impeller (22) is rotatably supported between the volute (21) and the isolation bracket (3), characterized in that, The first magnetic component (13) is connected to the output shaft (12) of the motor (1), and the second magnetic component (23) is fixedly connected to the impeller (22) on the side close to the motor (1). The first magnetic component (13) and the second magnetic component (23) are located on both sides of the isolation bracket (3) along the axial direction of the output shaft (12). When the first magnetic component (13) rotates, it can drive the second magnetic component (23) to rotate through magnetic force.

2. The impeller pump according to claim 1, characterized in that, The isolation bracket (3) has a first groove on the side near the motor (1), and at least a portion of the first magnetic element (13) is disposed in the first groove, and / or; The isolation bracket (3) has a second groove on the side near the pump body (2), and at least a portion of the second magnetic element (23) is disposed in the second groove.

3. The impeller pump according to claim 1, characterized in that, Both the first magnetic element (13) and the second magnetic element (23) are ring structures, and the axis of the first magnetic element (13) and the axis of the second magnetic element (23) coincide.

4. The impeller pump according to claim 1, characterized in that, The impeller (22) includes an impeller body (221) and an impeller shaft (222). The impeller shaft (222) is fixedly supported between the volute (21) and the isolation bracket (3). The impeller body (221) is rotatably sleeved on the impeller shaft (222). The second magnetic element (23) is installed on the impeller body (221) and sleeved on the impeller shaft (222).

5. The impeller pump according to claim 4, characterized in that, The impeller (22) also includes a wear-resistant bushing (223), which is rotatably sleeved on the impeller shaft (222), and the impeller body (221) is fixedly connected to the wear-resistant bushing (223).

6. The impeller pump according to claim 5, characterized in that, The impeller (22) further includes a first gasket (224), which is fixed to the impeller shaft (222) and abuts between the wear-resistant bushing (223) and the isolation bracket (3). The first gasket (224) is rotatable relative to at least one of the wear-resistant bushing (223) and the isolation bracket (3). And / or, the impeller pump includes a second gasket (225), which is fixed to the impeller shaft (222) and disposed between the wear-resistant bushing (223) and the volute (21). The second gasket (225) is in clearance (16) fit with at least one of the wear-resistant bushing (223) and the volute (21).

7. The impeller pump according to claim 1, characterized in that, The motor (1) further includes a stator (14) and a rotor (15). The stator (14) is fixed in position relative to the motor housing (11), and the rotor (15) is fixed in position relative to the output shaft (12). The stator (14) is fitted onto the rotor (15) with a gap (16).

8. The impeller pump according to claim 7, characterized in that, The gap (16) between the stator (14) and the rotor (15) is 0.3 mm to 0.5 mm.

9. The impeller pump according to any one of claims 1-8, characterized in that, A sealing element (4) is provided between the isolation bracket (3) and the volute (21); and / or, a sealing element (4) is provided between the isolation bracket (3) and the motor housing (11).

10. A spraying system, characterized in that, The spraying system includes nozzles and an impeller pump as described in any one of claims 1-9, the impeller pump being used to pump liquid to the nozzles.

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