Vane pump and food processor

Abstract

The invention provides a vane pump and a food processor. The vane pump includes: a housing; the motor is installed in the shell and comprises a motor rotor, a motor stator and a motor shaft, the motor rotor is arranged outside the motor shaft in a sleeving mode, and the motor stator is arranged outside the motor rotor in a sleeving mode; the pump body is arranged in the shell and comprises a pump rotor which is arranged on a motor shaft and is fixed with a motor rotor; and the sealing sleeve is installed in the shell and used for forming a sealing cavity, the motor rotor, the motor shaft and the pump rotor are installed in the sealing cavity, and the motor stator is located outside the sealing cavity. According to the vane pump, the motor rotor and the pump rotor are both installed on the motor shaft, a coupler structure is omitted, size reduction and cost reduction of the vane pump are facilitated, and the vane pump is suitable for small-size household appliances; the sealing sleeve can wrap the motor rotor, the motor shaft and the pump rotor to achieve isolation from the motor stator, and the sealing sleeve can play a role in sealing and leakage prevention.

Description

Technical Field

[0001] The present application relates to but is not limited to the field of household electrical appliances, and in particular to but is not limited to a vane pump and a food processor. Background Art

[0002] Household coffee machines mainly use electromagnetic pumps to provide brewing and steam water pressure. Since the electromagnetic pump uses the reciprocating motion of the valve core and combines two one-way valves to generate the pressure required for brewing and steam water circulation, the pressure generated fluctuates greatly. At the same time, the impact of the reciprocating motion of the valve core causes the electromagnetic pump to make a lot of noise. Therefore, commercial coffee machines generally use vane pumps to provide stable pressure, and the noise is much lower. However, the drive motor of the vane pump is very large, and a coupling needs to be added to connect the vane pump and the motor, which makes the structure complicated and the purchase price is also high, so vane pumps cannot be used on household coffee machines. Summary of the invention

[0003] The purpose of the embodiments of the present application is to provide a vane pump and a food processor, wherein the vane pump is small in size, can provide stable pressure, and has low operating noise.

[0004] A vane pump provided in an embodiment of the present application includes:

[0005] case;

[0006] A motor is installed in the housing and comprises a motor rotor, a motor stator and a motor shaft, wherein the motor rotor is sleeved outside the motor shaft, and the motor stator is sleeved outside the motor rotor;

[0007] a pump body mounted in the housing and comprising a pump rotor mounted to the motor shaft and fixed to the motor rotor; and

[0008] A sealing sleeve is installed in the housing, the sealing sleeve is used to form a sealing cavity, and the motor rotor, the motor shaft and the pump rotor are installed in the sealing cavity, and the motor stator is located outside the sealing cavity.

[0009] In some exemplary embodiments, the pump rotor is fixedly connected to the motor rotor to form a rotating assembly, and the rotating assembly is configured to rotate relative to the motor shaft.

[0010] In some exemplary embodiments, the pump rotor and the motor rotor are both fixedly connected to the motor shaft, and the pump rotor, the motor rotor and the motor shaft form a rotating assembly.

[0011] In some exemplary embodiments, the vane pump further includes a first bearing and a second bearing installed in the sealing cavity, the first bearing and the second bearing are both sleeved outside the motor shaft, and the pump rotor and the motor rotor are both located between the first bearing and the second bearing.

[0012] In some exemplary embodiments, the vane pump also includes a first bearing and a second bearing installed in the sealing cavity, the first bearing and the second bearing are both sleeved outside the motor shaft, the motor rotor is located between the first bearing and the second bearing, and the pump rotor is located on the side of the first bearing away from the second bearing.

[0013] In some exemplary embodiments, a bearing bracket is provided in the sealing cavity, the bearing bracket is provided with a first bearing mounting groove, and the first bearing is mounted in the first bearing mounting groove;

[0014] A second bearing installation groove is provided in the sealing sleeve, and the second bearing is installed in the second bearing installation groove.

[0015] In some exemplary embodiments, the first end of the sealing sleeve has an opening, and the first end of the sealing sleeve is sealingly matched with the housing to form the sealing cavity.

[0016] In some exemplary embodiments, the housing includes a pump cover and a pump shell that are fixedly connected, the first end of the sealing sleeve is provided with a flange extending outward, the flange is clamped between the pump cover and the pump shell, and the first end of the sealing sleeve is sealed with the pump cover to form the sealing cavity.

[0017] In some exemplary embodiments, the pump rotor is disposed close to the pump cover, and the motor rotor is located in the sealing sleeve.

[0018] In some exemplary embodiments, the second end of the sealing sleeve has an opening, and a sealing plug is provided at the opening of the second end of the sealing sleeve.

[0019] In some exemplary embodiments, the motor stator includes coil windings, and the motor rotor is a magnetic rotor.

[0020] In some exemplary embodiments, the vane pump further includes a control board installed in the housing and located outside the sealed cavity, and the control board is configured to control the operation of the vane pump.

[0021] An embodiment of the present application also provides a food processor, comprising the vane pump described in any of the above embodiments.

[0022] In some exemplary embodiments, the food processor is a blender, a coffee machine or a blender.

[0023] The vane pump provided in the embodiment of the present application has a motor rotor and a pump rotor both mounted to the motor shaft, eliminating the coupling structure between the pump rotor and the motor shaft in the prior art, which is beneficial to shortening the axial size of the vane pump along the motor shaft, and further beneficial to reducing the volume and cost of the vane pump; in addition, the vane pump can provide stable pressure and has low operating noise, and is suitable for small household appliances (such as household coffee machines).

[0024] In a vane pump, a sealing sleeve can be used to form a sealed cavity. The motor rotor, motor shaft and pump rotor are all installed in the sealed cavity, while the motor stator is located outside the sealed cavity. The motor rotor, motor shaft and pump rotor are wrapped by the sealing sleeve to achieve isolation from the motor stator. The flowing medium in the sealed cavity (such as water, etc.) can be completely isolated from the flowing medium flowing through the stator winding (such as air or other cooling fluids). The bearings supporting the motor shaft (such as the first bearing and the second bearing described below) can be located in the sealed cavity and immersed in the flowing medium in the sealed cavity. The sealed cavity is isolated from the external environment and can play a role in sealing and preventing leakage to eliminate the problem of bearing leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic structural diagram of a vane pump according to an embodiment of the present application;

[0026] Figure 2 for Figure 1 The exploded structural diagram of the vane pump shown;

[0027] Figure 3 for Figure 1 The main structural diagram of the vane pump shown;

[0028] Figure 4 for Figure 3 AA section structural diagram;

[0029] Figure 5 for Figure 3 BB-direction cross-sectional structural diagram;

[0030] Figure 6 A schematic diagram of the partial structure of a vane pump according to another embodiment of the present application;

[0031] Figure 7 This is a schematic diagram of the partial structure of a vane pump according to another embodiment of the present application.

[0032] Reference numerals:

[0033] 1-housing, 11-pump cover, 12-pump casing, 13-screws;

[0034] 21-motor rotor, 22-motor stator, 23-motor shaft;

[0035] 3-pump body, 31-pump rotor, 32-pump body cover;

[0036] 4-sealing sleeve, 40-sealing chamber, 41-flange, 42-sealing plug, 43-sealing ring, 44-second bearing mounting groove;

[0037] 51-first bearing, 52-second bearing;

[0038] 6-control board, 61-connection terminal;

[0039] 7-bearing bracket, 71-first bearing mounting groove, 8-connecting pipe. DETAILED DESCRIPTION

[0040] The principles and features of the present application are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present application and are not used to limit the scope of the present application.

[0041] like Figure 1-Figure 7 As shown, an embodiment of the present application provides a vane pump, comprising: a housing 1 , a motor, a pump body 3 and a sealing sleeve 4 , and the motor, the pump body 3 and the sealing sleeve 4 are all installed in the housing 1 .

[0042] The motor includes a motor rotor 21, a motor stator 22 and a motor shaft 23. The motor rotor 21 is sleeved outside the motor shaft 23, and the motor stator 22 is sleeved outside the motor rotor 21. A magnetic field transmission can be adopted between the motor stator 22 and the motor rotor 21, so that the motor rotor 21 can rotate.

[0043] The pump body 3 includes a pump rotor 31 mounted on the motor shaft 23 and fixed to the motor rotor 21. The pump rotor 31 is fixed to the motor rotor 21, and the pump rotor 31 can rotate together with the motor rotor 21, so that the pump body 3 pumps liquid (such as water, etc.).

[0044] The sealing sleeve 4 is used to form a sealing chamber 40 . The motor rotor 21 , the motor shaft 23 and the pump rotor 31 are all installed in the sealing chamber 40 , and the motor stator 22 is located outside the sealing chamber 40 .

[0045] In the vane pump, the motor rotor 21 and the pump rotor 31 are both installed on the motor shaft 23, eliminating the coupling structure between the pump rotor 31 and the motor shaft 23 in the prior art, which is beneficial to shortening the axial size of the vane pump along the motor shaft 23, and further beneficial to reducing the volume and cost of the vane pump; in addition, the vane pump can provide stable pressure and has low operating noise, and is suitable for small household appliances (such as: household coffee machines).

[0046] In the vane pump, the sealing sleeve 4 can be used to form a sealing chamber 40, the motor rotor 21, the motor shaft 23 and the pump rotor 31 are all installed in the sealing chamber 40, and the motor stator 22 is located outside the sealing chamber 40. The motor rotor 21, the motor shaft 23 and the pump rotor 31 are wrapped by the sealing sleeve 4 to achieve isolation from the motor stator 22. The flowing medium (such as water, etc.) in the sealing chamber 40 can be completely isolated from the flowing medium (such as air or other cooling fluid) flowing through the stator winding. The bearings supporting the motor shaft 23 (such as the first bearing 51 and the second bearing 52 described below) can be arranged in the sealing chamber 40 and immersed in the flowing medium in the sealing chamber 40. The sealing chamber 40 is isolated from the external environment and can play a role in sealing and preventing leakage to eliminate the problem of bearing leakage (such as bearing water leakage).

[0047] In some exemplary embodiments, Figure 4 and Figure 6 As shown, the pump rotor 31 and the motor rotor 21 are both fixedly connected to the motor shaft 23, and the pump rotor 31, the motor rotor 21 and the motor shaft 23 form a rotating assembly. The pump rotor 31 can be connected to the motor shaft 23 via a spline, or the pump rotor 31 can be fixed to the motor shaft 23 in other ways.

[0048] In the vane pump, the motor shaft 23, the motor rotor 21 and the pump rotor 31 are fixedly connected to form an integral rotating assembly, and the rotating assembly can perform rotational motion together.

[0049] In some other exemplary embodiments, Figure 7 As shown, the pump rotor 31 is fixedly connected to the motor rotor 21 to form a rotating assembly, and the rotating assembly is configured to rotate relative to the motor shaft 23. The pump rotor 31 and the motor rotor 21 can be fixed by welding, screw fixing or other methods.

[0050] In the vane pump, the pump rotor 31 and the motor rotor 21 can be fixedly connected to form an integral rotating assembly, and the pump rotor 31 and the motor rotor 21 can maintain synchronous rotation, while the motor shaft 23 is a non-moving part and does not rotate. The motor rotor 21 and the motor shaft 23 can be clearance-fitted, and the pump rotor 31 and the motor shaft 23 can be clearance-fitted to reduce the friction resistance when the pump rotor 31 and the motor rotor 21 rotate relative to the motor shaft 23.

[0051] In some exemplary embodiments, Figure 4 and Figure 6 As shown, the vane pump also includes a first bearing 51 and a second bearing 52 installed in the sealing chamber 40. The first bearing 51 and the second bearing 52 are both sleeved outside the motor shaft 23. The motor rotor 21 is located between the first bearing 51 and the second bearing 52. The pump rotor 31 is located on the side of the first bearing 51 away from the second bearing 52.

[0052] In the vane pump, the pump rotor 31, the first bearing 51, the motor rotor 21 and the second bearing 52 are sequentially mounted on the motor shaft 23, and the first bearing 51 and the second bearing 52 can support the motor shaft 23. The portion of the motor shaft 23 located on the side of the first bearing 51 away from the second bearing 52 is a cantilever structure, and the pump rotor 31 can be mounted on the cantilever structure of the motor shaft 23.

[0053] In some other exemplary embodiments, Figure 7 As shown, the vane pump also includes a first bearing 51 and a second bearing 52 installed in the sealing cavity 40 . The first bearing 51 and the second bearing 52 are both sleeved outside the motor shaft 23 , and the pump rotor 31 and the motor rotor 21 are both located between the first bearing 51 and the second bearing 52 .

[0054] In the vane pump, the first bearing 51 and the second bearing 52 are supported at both ends of the motor shaft 23. At this time, the motor shaft 23 is in the form of a simply supported beam, and the pump rotor 31 and the motor rotor 21 are installed in the middle of the motor shaft 23 in the form of a simply supported beam.

[0055] In some exemplary embodiments, Figure 2 and Figure 4 As shown, the first end of the sealing sleeve 4 (such as Figure 2 and Figure 4 The left end of the sealing sleeve 4 has an opening, and the first end of the sealing sleeve 4 can be sealed and matched with the housing 1 to form a sealed cavity 40.

[0056] The first end of the sealing sleeve 4 has an opening so that the motor shaft 23, the first bearing 51, the second bearing 52, the motor rotor 21 and the pump rotor 31 are installed in the inner sealing chamber. The first end of the sealing sleeve 4 can be sealed with the housing 1, and the housing can seal the opening of the first end of the sealing sleeve 4 to form a closed sealing chamber 40.

[0057] It should be understood that the first end of the sealing sleeve 4 can be sealed with the housing 1 to form a sealed cavity 40, and other methods can also be used, such as: the first end of the sealing sleeve 4 can be provided with a sealing end cover, and the sealing end cover can seal the opening of the first end of the sealing sleeve 4. Compared with separately providing a sealing end cover at the first end of the sealing sleeve 4, the first end of the sealing sleeve 4 is sealed by the housing 1, and the sealing end cover can be omitted, which is conducive to simplifying the structure.

[0058] In some exemplary embodiments, Figure 1-Figure 4 As shown, the housing 1 includes a pump cover 11 and a pump shell 12 that are fixedly connected, and the pump shell 12 and the pump cover 11 cooperate to form a cavity that accommodates the motor, the pump body 3 and the sealing sleeve 4. The pump cover 11 and the pump shell 12 can be fixed by screws 13. Of course, the pump shell 12 and the pump cover 11 can also be fixed by other methods.

[0059] The first end of the sealing sleeve 4 is provided with a flange 41 extending outward, and the flange 41 is sandwiched between the pump cover 11 and the pump housing 12. The first end of the sealing sleeve 4 is sealed with the pump cover 11 to form a sealing cavity 40. The screws 13 for fixing the pump cover 11 and the pump housing 12 can pass through the flange 41 at the first end of the sealing sleeve 4 to achieve the fixing of the sealing sleeve 4. A sealing ring 43 can be provided between the flange 41 of the sealing sleeve 4 and the pump cover 11 to seal the gap between the flange 41 of the sealing sleeve 4 and the pump cover 11 so as to form a seal.

[0060] In some exemplary embodiments, Figure 4 As shown, the pump rotor 31 is arranged close to the pump cover 11, the motor rotor 21 is located in the sealing sleeve 4, one end of the motor shaft 23 is located in the sealing sleeve 4, and the other end can extend toward the pump cover 11 for installing the pump rotor 31.

[0061] In some exemplary embodiments, Figure 2 and Figure 4 As shown, the second end of the sealing sleeve 4 (such as Figure 4 and Figure 6 The right end of the sealing sleeve 4 has an opening, and a sealing plug 42 is provided at the opening of the second end of the sealing sleeve 4. The opening of the second end of the sealing sleeve 4 may be smaller than the opening of the first end of the sealing sleeve 4, and the sealing plug 42 may seal the opening of the second end of the sealing sleeve 4.

[0062] The sealing plug 42 may be a rubber plug; or, the sealing plug 42 may include a bolt and a sealing gasket sleeved on the bolt, the bolt being threadedly connected to the opening of the second end of the sealing sleeve 4, and the head of the bolt cooperates with the sealing sleeve 4 to squeeze the sealing gasket to seal the opening of the second end of the sealing sleeve 4.

[0063] In some exemplary embodiments, Figure 4 As shown, a second bearing installation groove 44 may be provided in the sealing sleeve 4 , and the second bearing 52 may be installed in the second bearing installation groove 44 .

[0064] The second bearing installation groove 44 may be disposed at the second end of the sealing sleeve 4 , and the second bearing 52 may be installed in the second bearing installation groove 44 , so that the sealing sleeve 4 may support the motor shaft 23 through the second bearing 52 .

[0065] In some exemplary embodiments, Figure 4 As shown, a bearing bracket 7 is provided in the sealing cavity 40 , the bearing bracket 7 is provided with a first bearing mounting groove 71 , and the first bearing 51 is mounted in the first bearing mounting groove 71 .

[0066] The bearing bracket 7 may be disposed at the first end of the sealing sleeve 4, and the bearing bracket 7 may be fixed to the sealing sleeve 4 or the pump cover 11, and the first bearing 51 may be installed in the first bearing installation groove 71 of the bearing bracket 7, so that the sealing sleeve 4 or the pump cover 11 may support the motor shaft 23 through the first bearing 51 and the bearing bracket 7. The notch of the first bearing installation groove 71 may face the sealing sleeve 4 and away from the pump cover 11, so that the first bearing 51 is located on the side of the bearing bracket 7 facing the sealing sleeve 4.

[0067] In some exemplary embodiments, Figure 2 and Figure 4 As shown, the motor stator 22 includes coil windings, and the motor rotor 21 is a magnetic rotor.

[0068] The motor stator 22 includes a coil winding, which can generate a magnetic field when energized; the motor rotor 21 can be a magnetic rotor, which can rotate under the action of the magnetic field generated by the coil winding. The motor rotor 21 can include a permanent magnet, or the motor rotor 21 can include an electromagnetic coil.

[0069] The motor stator 22 and the motor rotor 21 adopt magnetic field transmission, so the pump rotor 31 and the motor rotor 21 can be in a suspended state when rotating, with less vibration; and the magnetic rotor is used as the motor energy carrier, which is safer.

[0070] In some exemplary embodiments, Figure 2 and Figure 4 As shown, the vane pump further includes a control board 6, which is installed in the housing 1 and outside the sealed cavity 40. The control board 6 is configured to control the operation of the vane pump. The control board 6 can be electrically connected to the motor stator 22 to control the on and off of the motor stator 22, thereby controlling the rotation of the motor rotor 21 to control the vane pump to pump liquid.

[0071] The control board 6 has a connection terminal 61, one end of which can extend out of the housing 1 to achieve electrical connection with other components, such as: the connection terminal 61 can be electrically connected to the main control board of a food processor including the vane pump.

[0072] In some exemplary embodiments, Figure 4 As shown, the vane pump further includes a pump body cover plate 32 disposed on both sides of the pump rotor 31 . The pump body cover plate 32 can be used to seal the pump body 3 to prevent the medium in the pump from leaking out.

[0073] In some exemplary embodiments, Figure 1-Figure 5 As shown, the vane pump further includes two connecting pipes 8, one of the two connecting pipes 8 is a liquid inlet pipe, and the other is a liquid outlet pipe.

[0074] An embodiment of the present application also provides a food processor, comprising the vane pump in any of the above embodiments.

[0075] In some exemplary embodiments, the food processor is a wall breaking machine, a coffee machine or a blender. Of course, the food processor can also be other products.

[0076] It should be understood that the vane pump can be used not only in food processing machines but also in other devices.

[0077] In summary, in view of the problems of large noise and unstable pressure in the existing electromagnetic pumps, and the problems of large size and complex transmission in the existing vane pumps, the embodiment of the present application provides a new vane pump, which adopts a magnetic rotor as the magnetic field transmission method of the motor rotor, removes the brushes and commutator of the traditional motor, so that the motor rotor and the motor stator can be completely isolated, the operation is safer, and the size of the vane pump is reduced; the motor rotor and the pump rotor are designed as an integral rotating assembly, and the coupling in the conventional solution is removed, making the design simpler and avoiding the transmission noise and efficiency loss caused by the coupling; a sealing sleeve is used to isolate the motor shaft, the rotating assembly, and the bearings supporting the motor shaft (the first bearing and the second bearing) from the non-rotating parts (such as the motor stator), completely avoiding the problem of bearing leakage, and making the bearing design simpler.

[0078] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0079] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features.

[0080] In this application, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0081] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0082] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0083] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A vane pump, characterized in that: include: case; A motor is installed in the housing and comprises a motor rotor, a motor stator and a motor shaft, wherein the motor rotor is sleeved outside the motor shaft, and the motor stator is sleeved outside the motor rotor; a pump body mounted in the housing and comprising a pump rotor mounted to the motor shaft and fixed to the motor rotor; and A sealing sleeve is installed in the housing, the sealing sleeve is used to form a sealing cavity, and the motor rotor, the motor shaft and the pump rotor are installed in the sealing cavity, and the motor stator is located outside the sealing cavity.

2. The vane pump according to claim 1, characterized in that: The pump rotor is fixedly connected to the motor rotor to form a rotating assembly, and the rotating assembly is configured to be rotatable relative to the motor shaft.

3. The vane pump according to claim 1, characterized in that: The pump rotor and the motor rotor are both fixedly connected to the motor shaft, and the pump rotor, the motor rotor and the motor shaft form a rotating assembly.

4. The vane pump according to claim 1, characterized in that: It also includes a first bearing and a second bearing installed in the sealing cavity, the first bearing and the second bearing are both sleeved outside the motor shaft, and the pump rotor and the motor rotor are both located between the first bearing and the second bearing.

5. The vane pump according to claim 1, characterized in that: It also includes a first bearing and a second bearing installed in the sealing cavity, the first bearing and the second bearing are both sleeved outside the motor shaft, the motor rotor is located between the first bearing and the second bearing, and the pump rotor is located on the side of the first bearing away from the second bearing.

6. The vane pump according to claim 4 or 5, characterized in that: A bearing bracket is provided in the sealing cavity, the bearing bracket is provided with a first bearing mounting groove, and the first bearing is mounted in the first bearing mounting groove; A second bearing installation groove is provided in the sealing sleeve, and the second bearing is installed in the second bearing installation groove.

7. The vane pump according to any one of claims 1 to 5, characterized in that: The first end of the sealing sleeve has an opening, and the first end of the sealing sleeve is sealingly matched with the housing to form the sealing cavity.

8. The vane pump according to claim 7, characterized in that: The housing comprises a pump cover and a pump shell which are fixedly connected. The first end of the sealing sleeve is provided with a flange extending outwardly. The flange is clamped between the pump cover and the pump shell. The first end of the sealing sleeve is sealed with the pump cover to form the sealing cavity.

9. The vane pump according to claim 8, characterized in that: The pump rotor is arranged close to the pump cover, and the motor rotor is located in the sealing sleeve.

10. The vane pump according to any one of claims 1 to 5, characterized in that: The second end of the sealing sleeve has an opening, and a sealing plug is provided at the opening of the second end of the sealing sleeve.

11. The vane pump according to any one of claims 1 to 5, characterized in that: The motor stator comprises a coil winding, and the motor rotor is a magnetic rotor.

12. The vane pump according to any one of claims 1 to 5, characterized in that: The utility model also comprises a control board, which is installed in the housing and located outside the sealing cavity, and the control board is configured to control the operation of the vane pump.

13. A food processing machine, characterized in that: A vane pump comprising the vane pump according to any one of claims 1 to 12.

14. The food processor according to claim 13, characterized in that The food processor is a wall breaking machine, a coffee machine or a blender.

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