Motor pump

Abstract

The invention provides a motor pump. A motor assembly is in driving connection with a plunger pump assembly; the shutdown device is detachably connected with the plunger pump assembly; the plunger pump assembly comprises a pump body, a bearing assembly, a plunger and a pump cover. The plunger is installed on the pump body, pump covers are arranged at the two ends, located on the two sides of the pump body, of the plunger respectively, and the pump covers are connected with the pump body. A one-way valve cavity is formed in the pump body and the pump cover, and a one-way valve assembly is installed in the one-way valve cavity. The motor assembly is in driving connection with the plunger through the bearing assembly. The single plunger pump is adopted as the booster pump of the lithium battery cleaning machine, so that the efficiency is higher, the pressure and flow output by the pump are larger, or the endurance time of a battery pack is longer.

Description

Technical Field

[0001] The present invention relates to the technical field of pump equipment, in particular to a motor pump, in particular to a high-efficiency micro motor pump unit. Background Art

[0002] High-pressure washers are increasingly used for household cleaning due to their high efficiency, cleanliness, and environmental friendliness. With the development and application of lithium battery technology, a growing number of lithium-ion DC-powered washers are replacing traditional AC-powered washers. Existing pumps designed with AC motors have high load capacity and large size, making them suitable only for high-power operation. Lithium-ion battery packs, however, generally have a power output far lower than that of AC-powered washers due to their limited energy. Existing AC motor-powered pumps, when paired with lithium-ion battery packs and operating at lower power levels, suffer from low efficiency. Furthermore, their large size and high component count contribute to high costs.

[0003] The existing technology uses a traditional three-piston pump, which is large in size, complex in structure, high in cost, and has a large number of parts and complex transmission, resulting in low overall efficiency. In addition, the existing design does not consider modular design, the degree of commonality of parts is low, and the management cost is high.

[0004] Furthermore, traditional automatic stop devices are fixed to the pump body and cannot be removed, meaning they are essential to the pump assembly. In reality, however, pump assemblies used in handheld cleaning machines do not require automatic stop devices because handheld cleaning machines directly turn the power on and off via a button or trigger on the handle, eliminating the need for a pressure switch controlled by pump pressure to power the motor on and off. Therefore, when used in handheld cleaning machines, automatic stop devices are redundant.

[0005] The purpose of the present invention is to provide a single-plunger motor pump unit with a compact structure, low cost and high efficiency, while taking into account modular design, so that the motor pump unit of the present invention can be used in both handheld cleaning machines and portable cleaning machines.

[0006] Patent document CN104279167B discloses a motor pump and a washing appliance equipped with the motor pump. The motor pump includes a pump housing having a water inlet and first and second water outlets. A motor and an impeller capable of forward and reverse rotation are housed within the pump housing. A diverter baffle is disposed within the pump housing, capable of forward and reverse rotation driven by water flow and selectively blocking the first and second water outlets. The pump housing is provided with a sliding slot for receiving the diverter baffle. The washing appliance includes the motor pump described above. However, this patent document still suffers from drawbacks such as large size, complex structure, high cost, and low overall efficiency.

[0007] Patent document CN216812039U discloses a lithium-ion high-pressure cleaning machine motor pump unit. Its structure is to drive a high-pressure pump through a reduction mechanism using a DC motor. The matching high-pressure pump is a three-plunger high-pressure pump. The improved solution in this patent document only changes the lubrication method of the oil cylinder transmission part from oil lubrication to grease lubrication, and removes the oil seal between the oil cylinder and gearbox to avoid wear between the oil seal and the shaft, which can improve mechanical efficiency to a certain extent. However, this patent document still suffers from the drawbacks of large size, complex structure, high cost, and low overall efficiency. Summary of the Invention

[0008] In view of the defects in the prior art, an object of the present invention is to provide a motor pump.

[0009] A motor pump according to the present invention includes:

[0010] plunger pump assembly;

[0011] a motor assembly, drivingly connected to the plunger pump assembly;

[0012] a shutdown device, detachably connected to the plunger pump assembly;

[0013] Wherein, the plunger pump assembly includes: a pump body, a bearing assembly, a plunger and a pump cover;

[0014] The plunger is mounted on the pump body, and the two ends of the plunger located on both sides of the pump body are respectively provided with pump covers, and the pump covers are connected to the pump body;

[0015] A one-way valve cavity is formed on the pump body and the pump cover, and a one-way valve assembly is installed in the one-way valve cavity;

[0016] The motor assembly is drivingly connected to the plunger through the bearing assembly.

[0017] Preferably, the pump body is provided with:

[0018] a transmission cavity, used for mounting the bearing assembly;

[0019] A plunger cavity, used for installing the plunger;

[0020] A first water inlet one-way valve chamber, used for installing the one-way valve assembly;

[0021] A first water outlet one-way valve cavity, used for installing the one-way valve assembly;

[0022] The pump cover is provided with:

[0023] A second water inlet one-way valve chamber, used for installing the one-way valve assembly;

[0024] The second water outlet one-way valve chamber is used for installing the one-way valve assembly.

[0025] Preferably, the one-way valve assembly includes:

[0026] The water inlet one-way valve is arranged through the first water inlet one-way valve cavity, and its two ends are respectively located in the second water inlet one-way valve cavities of the two pump covers;

[0027] The water outlet one-way valve is arranged through the first water outlet one-way valve cavity, and its two ends are respectively located in the second water outlet one-way valve cavities of the two pump covers.

[0028] Preferably, the pump body is provided with:

[0029] The water inlet of the pump body is connected with a water inlet joint;

[0030] The water outlet of the pump body can be connected to the shutdown device.

[0031] Preferably, the axis of the plunger, the axis of the water inlet one-way valve, and the axis of the water outlet one-way valve are parallel;

[0032] The axis of the plunger is perpendicular to the axis of the bearing assembly;

[0033] The axis center line of the water inlet of the pump body is perpendicular to the axis center line of the water outlet of the pump body and is parallel to the axis center line of the bearing assembly.

[0034] Preferably, a driving groove is provided on the plunger;

[0035] The bearing assembly includes a driving bearing, which is installed in the driving groove and can drive the plunger to reciprocate.

[0036] Preferably, the plunger pump assembly further comprises: a total one-way valve core and a total one-way valve spring;

[0037] The total one-way valve core and the total one-way valve spring are arranged in the pump body and are located at the water outlet of the pump body.

[0038] Preferably, the plunger pump assembly further comprises: a water seal, a water seal bracket and an oil seal;

[0039] The water seal, the water seal bracket and the oil seal constitute a sealing structure, and the pump cover is sealed and connected to the pump body through the sealing structure.

[0040] Preferably, the motor assembly includes: a motor, a motor bracket, an internal gear, a planetary gear and a planetary carrier;

[0041] The motor is mounted on the motor bracket;

[0042] The internal gear, the planetary gear, and the planetary carrier constitute a reduction structure, and the motor is drivingly connected to the bearing assembly via the reduction structure.

[0043] Preferably, the shutdown device comprises: a valve body, a micro switch, a quick-connect connector, a valve core and a spring;

[0044] The valve body is provided with a valve body water inlet and a valve body water outlet;

[0045] The water inlet of the valve body is connected to the water outlet of the pump body, and the total one-way valve core and the total one-way valve spring are arranged between the water inlet of the valve body and the water outlet of the pump body;

[0046] The water outlet of the valve body is connected with a quick-connect plug;

[0047] The valve body is connected to a micro switch box, the micro switch is arranged in the micro switch box, and a micro switch cover is provided at the open end of the micro switch box;

[0048] The valve core is installed in the valve body, the small end of the valve core passes through the spring and is connected to the micro switch, and the large end of the valve core is connected to the quick-connect plug.

[0049] Compared with the prior art, the present invention has the following beneficial effects:

[0050] 1. The present invention changes the conventional three-plunger pump into a single-plunger double-acting pump, and sets a pump cover and a one-way valve at both ends of a plunger, so that the overall volume is smaller, the number of parts is less, and the cost is lower. In addition, the single-plunger pump assembly has a smaller movement amplitude than the three-plunger pump, and the transmission efficiency is higher.

[0051] 2. The present invention integrates the shutdown device, valve body and micro switch box, which is simple to install and low in cost. The valve body is set to be detachable from the pump body, so that the motor pump unit can meet the needs of both handheld cleaning machines and portable cleaning machines, thereby improving the versatility of parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Other features, objects and advantages of the present invention will become more apparent upon reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0053] Figure 1 An exploded diagram showing the components of the motor pump;

[0054] Figure 2 An exploded diagram showing the parts of the motor pump;

[0055] Figure 3 This is an assembly diagram showing the assembly between the various parts of the motor pump.

[0056] The figure shows:

[0057] Motor assembly 100 Water seal bracket 206

[0058] Motor 101 Oil seal 207

[0059] Motor bracket 102 Water inlet check valve 208

[0060] Internal gear 103 Water outlet check valve 209

[0061] Planetary gear 104 Total one-way valve core 210

[0062] Planet carrier 105 Main check valve spring 211

[0063] Plunger pump assembly 200 Water inlet connector 212

[0064] Pump body 201 Stop device 300

[0065] Pump body water inlet 201a valve body 301

[0066] Pump body water outlet 201b Valve body water inlet 301a

[0067] First water inlet one-way valve chamber 201c valve body water outlet 301b

[0068] First water outlet one-way valve chamber 201d Micro switch box 301c

[0069] Plunger chamber 201e Micro switch 302

[0070] Screw hole 201f Micro switch cover 303

[0071] Bearing assembly 202 Quick connector 304

[0072] Drive bearing 202a Seal ring 305

[0073] Plunger 203 Valve core 306

[0074] Drive groove 203a Valve core large end 306a

[0075] Pump cover 204 valve core small end 306b

[0076] Second water inlet one-way valve chamber 204a spring 307

[0077] Second water outlet one-way valve chamber 204b sealing ring 308

[0078] Water seal 205 U-shaped pin 309 DETAILED DESCRIPTION

[0079] The present invention will be described in detail below with reference to specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, for those skilled in the art, several changes and improvements can be made without departing from the scope of the present invention. These all fall within the scope of protection of the present invention.

[0080] Example 1

[0081] like Figures 1 to 3 As shown, this embodiment provides a motor pump, comprising: a motor assembly 100, a plunger pump assembly 200 and a shutdown device 300. The motor assembly 100 is drivingly connected to the plunger pump assembly 200; the shutdown device 300 is detachably connected to the plunger pump assembly 200. The plunger pump assembly 200 comprises: a pump body 201, a bearing assembly 202, a plunger 203 and a pump cover 204; the plunger 203 is mounted on the pump body 201, and pump covers 204 are respectively provided at both ends of the plunger 203 on both sides of the pump body 201, and the pump cover 204 is connected to the pump body 201; a one-way valve cavity is formed on the pump body 201 and the pump cover 204, and a one-way valve assembly is installed in the one-way valve cavity; the motor assembly 100 is drivingly connected to the plunger 203 through the bearing assembly 202.

[0082] The pump body 201 is provided with a water inlet 201a and a water outlet 201b. The water inlet 201a is connected to the water inlet connector 212; the water outlet 201b can be connected to the shutdown device 300. The plunger 230 is provided with a drive groove 203a. The bearing assembly 202 includes a drive bearing 202a, which is installed in the drive groove 203a and can drive the plunger 230 to reciprocate.

[0083] The motor assembly 100 includes: a motor 101, a motor bracket 102, an internal gear 103, a planetary gear 104 and a planetary carrier 105; the motor 101 is installed on the motor bracket 102; the internal gear 103, the planetary gear 104 and the planetary carrier 105 constitute a reduction structure, and the motor 101 is driven and connected to the bearing assembly 202 through the reduction structure.

[0084] The pump body 201 is equipped with a transmission chamber, a plunger chamber 201e, a first water inlet check valve chamber 201c, and a first water outlet check valve chamber 201d. The transmission chamber is used to mount the bearing assembly 202; the plunger chamber 201e is used to mount the plunger 203; the first water inlet check valve chamber 201c is used to mount the check valve assembly; and the first water outlet check valve chamber 201d is used to mount the check valve assembly. The pump cover 204 is equipped with a second water inlet check valve chamber 204a and a second water outlet check valve chamber 204b. The second water inlet check valve chamber 204a is used to mount the check valve assembly; the second water outlet check valve chamber 204b is used to mount the check valve assembly. The one-way valve assembly includes: an inlet one-way valve 208 and an outlet one-way valve 209; the inlet one-way valve 208 is arranged through the first inlet one-way valve cavity 201c, and its two ends are respectively located in the second inlet one-way valve cavity 204a of the two pump covers 204; the outlet one-way valve 209 is arranged through the first outlet one-way valve cavity 201d, and its two ends are respectively located in the second outlet one-way valve cavity 204b of the two pump covers 204.

[0085] The axis of the plunger 203, the axis of the water inlet check valve 208 and the axis of the water outlet check valve 209 are parallel; the axis of the plunger 203 is perpendicular to the axis of the bearing assembly 202; the axis of the pump body water inlet 201a is perpendicular to the axis of the pump body water outlet 201b, and is parallel to the axis of the bearing assembly 202.

[0086] The plunger pump assembly 200 further includes a master check valve core 210 and a master check valve spring 211. The master check valve core 210 and the master check valve spring 211 are disposed within the pump body 201 and located at the pump body water outlet 201b of the pump body 201. The plunger pump assembly 200 further includes a water seal 205, a water seal bracket 206, and an oil seal 207. The water seal 205, the water seal bracket 206, and the oil seal 207 form a sealing structure, through which the pump cover 204 is sealed to the pump body 201.

[0087] The shutdown device 300 includes: a valve body 301, a micro switch 302, a quick connector 304, a valve core 306 and a spring 307; the valve body 301 is provided with a valve body water inlet 301a and a valve body water outlet 301b; the valve body water inlet 301a is connected to the pump body water outlet 201b of the pump body 201, and a total check valve core 210 and a total check valve spring 211 are provided between the valve body water inlet 301a and the pump body water outlet 201b; the valve body water outlet 301a is connected to the pump body water outlet 201b of the pump body 201; 1b is connected to a quick-connect plug 304; a microswitch box 301c is connected to the valve body 301, the microswitch 302 is arranged in the microswitch box 301c, and a microswitch cover 303 is provided at the open end of the microswitch box 301c; the valve core 306 is installed in the valve body 301, the small end 306b of the valve core 306 is connected to the microswitch 302 through the spring 307, and the large end 306a of the valve core 306 is connected to the quick-connect plug 304.

[0088] Example 2

[0089] Those skilled in the art may understand this embodiment as a more specific description of Embodiment 1.

[0090] This embodiment provides a high-efficiency motor pump unit for a micro-cleaning machine with an automatic shutdown function, including: a motor assembly 100 , a plunger pump assembly 200 and a shutdown device 300 .

[0091] The motor assembly 100 includes a motor 101 , a motor bracket 102 , an internal gear 103 , planetary gears 104 , and a planetary carrier 105 .

[0092] The plunger pump assembly 200 includes a pump body 201, a plunger 203, a bearing assembly 202, and a pump cover 204 at each end of the plunger. The pump body includes a transmission chamber, a plunger chamber 201e, a first water inlet check valve chamber 201c, a first water outlet check valve chamber 201d, a valve body water inlet 201a, and a valve body water outlet 201b. The transmission chamber is installed with the bearing assembly 202, and the plunger chamber 201e is installed with the plunger 203; the first water inlet check valve chamber 201c is installed with the water inlet check valve 208; the first water outlet check valve chamber 201d is installed with the water outlet check valve 209; the valve body water inlet 201a is installed with the water inlet connector 212; the pump cover 204 has a second water inlet check valve chamber 204a and a second water outlet check valve chamber 204b; the two ends of the water inlet check valve 208 and the water outlet check valve 209 are respectively inserted into the installation chambers of the pump cover 204 on both sides of the pump body 201.

[0093] The axes of the plunger 203, the water inlet check valve 208, and the water outlet check valve 209 are perpendicular to the axis of the bearing assembly. The axes of the valve body water inlet 201a and the valve body water outlet 201b are perpendicular. The pump body also has two pump cover screw mounting holes 201f, which are used to connect the pump covers on both sides of the pump body to the pump body via bolts.

[0094] There is a driving groove 203a in the middle of the plunger, and a driving bearing 202a for driving the plunger to reciprocate is installed in the groove; the two ends of the plunger are respectively provided with a pump cover 204, a water inlet check valve 208, a water outlet check valve 209 and a water seal 205 and other boosting elements; the motor assembly also includes a reduction structure, which includes a planetary carrier 105, a planetary gear 104, and an internal gear 103.

[0095] The shutdown device includes a valve body 301, a valve core 306, a spring 307 and a micro switch 302. The valve body includes a valve body water inlet 301a and a valve body water outlet 301b.

[0096] The valve body water inlet 301a is connected to the pump body water outlet 201b, and the valve body water outlet 301b is connected to the quick-connect connector 304, which can be connected to a high-pressure pipe.

[0097] A micro switch box 301 c is integrally injection-molded on one side of the valve body 301 opposite to the water outlet end, and the micro switch 302 is arranged and installed in the micro switch box 301 c.

[0098] A through hole is provided on the other end of the valve body 301 opposite to the valve body water outlet 301b; the valve core has a large valve core end 306a and a small valve core end 306b. When the valve core is installed in the valve body, the large valve core end 306a is supported on the spring 307, and the small valve core end 306b contacts the micro switch 302 through the through hole.

[0099] The pump body's water outlet 201b is also equipped with a main check valve core 210 and a main check valve spring 211. When the water gun connected to the high-pressure pipe is turned off, the system pipeline pressure will continue to rotate because the motor has not yet been powered off, causing the pump to continue to output pressurized water, resulting in an increase in pipeline pressure. This increase in pipeline pressure causes the valve core 306 to move toward the valve core's small end 306b, thereby pushing the microswitch contacts to disconnect the motor power supply. At the same time, because the water gun valve is in the closed state and no liquid is flowing in the pipeline, the main check valve core 210, under the action of the main check valve spring 211 and the internal pipeline pressure, reverses to block the water outlet channel, causing the pipeline channel between the main check valve core 210 and the gun valve to maintain pressure. Under the action of this pressure, the valve core 306 remains in a pushed-out state, i.e., the microswitch 302 is triggered by the valve core 306 and remains in a de-energized state.

[0100] When the water gun valve is opened to spray water, due to the reduction of the holding pressure, the valve core 306 will move toward the large end 301a of the valve core under the elastic force of the spring 307, that is, the valve core 306 leaves the micro switch 302, the micro switch closes again, the motor is powered on and started, and the machine resumes working state.

[0101] This embodiment specifically addresses the relatively low power consumption of lithium-ion batteries by designing a motor-pump assembly with a compact size, simple structure, and low cost. Furthermore, the shutdown mechanism is designed as a separate, detachable component, allowing the motor-pump unit to be used with a handheld cleaning machine when the shutdown mechanism is not installed. When the shutdown mechanism is installed, the unit can be used with a portable cleaning machine. Pressurized water output by the motor pump is delivered to the spray gun via the overflow shutdown mechanism and a high-pressure pipe. The spray gun trigger controls the opening and closing of the gun valve, causing changes in line pressure to further control the opening and closing of the overflow shutdown mechanism's microswitch, thereby controlling the machine's start and stop.

[0102] In this embodiment, on the one hand, by adopting a single-plunger pump (rather than a three-plunger pump) as the booster pump of the lithium-ion battery cleaning machine, the efficiency is improved, the pressure and flow output by the pump are greater, or the battery pack has a longer battery life; on the other hand, the detachable modular shutdown device allows the single-plunger motor pump unit to be used in both handheld cleaning machines and portable cleaning machines, thereby improving the standardization of parts and reducing management costs.

[0103] Compared with the prior art, this embodiment changes the conventional three-plunger pump into a single-plunger double-acting pump, that is, a pump cover and a one-way valve are respectively provided at both ends of a plunger, so that the overall volume is smaller, the number of parts is reduced, and the cost is lower; the single-plunger pump assembly has a higher transmission efficiency because the moving pair is smaller than that of the three-plunger pump.

[0104] In this embodiment, the shutdown device, valve body and micro switch box are integrated into one design, which is simple to install and low in cost; and the valve body is designed to be detachable from the pump body, so that the motor pump unit can meet the needs of two models, thereby improving the versatility of components.

[0105] The present invention adopts a single plunger pump as the booster pump of the lithium battery cleaning machine, thereby achieving higher efficiency, greater pressure and flow output by the pump, or longer battery life of the battery pack.

[0106] In the description of this application, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0107] The above describes specific embodiments of the present invention. It should be understood that the present invention is not limited to the specific embodiments described above, and those skilled in the art may make various changes or modifications within the scope of the claims, which do not affect the essence of the present invention. The embodiments of this application and the features in the embodiments may be combined with each other in any manner unless there is a conflict.

Claims

1. A motor pump, characterized in that: include: Plunger pump assembly (200); A motor assembly (100) drivingly connected to the plunger pump assembly (200); a shutdown device (300) detachably connected to the plunger pump assembly (200); The plunger pump assembly (200) comprises: a pump body (201), a bearing assembly (202), a plunger (203) and a pump cover (204); The plunger (203) is mounted on the pump body (201), and the pump covers (204) are respectively provided at both ends of the plunger (203) on both sides of the pump body (201), and the pump covers (204) are connected to the pump body (201); A one-way valve cavity is formed on the pump body (201) and the pump cover (204), and a one-way valve assembly is installed in the one-way valve cavity; The motor assembly (100) is drivingly connected to the plunger (203) via the bearing assembly (202).

2. The motor pump according to claim 1, characterized in that The pump body (201) is provided with: A transmission cavity, used for installing the bearing assembly (202); A plunger cavity (201e) for mounting the plunger (203); A first water inlet one-way valve chamber (201c) is used for installing the one-way valve assembly; A first water outlet one-way valve chamber (201d), used for installing the one-way valve assembly; The pump cover (204) is provided with: A second water inlet one-way valve chamber (204a) for installing the one-way valve assembly; The second water outlet one-way valve chamber (204b) is used for installing the one-way valve assembly.

3. The motor pump according to claim 2, characterized in that The one-way valve assembly comprises: The water inlet one-way valve (208) is provided through the first water inlet one-way valve cavity (201c), and its two ends are respectively located in the second water inlet one-way valve cavities (204a) of the two pump covers (204); The water outlet one-way valve (209) is provided through the first water outlet one-way valve cavity (201d), and its two ends are respectively located in the second water outlet one-way valve cavities (204b) of the two pump covers (204).

4. The motor pump according to claim 3, characterized in that The pump body (201) is provided with: The water inlet (201a) of the pump body is connected to a water inlet connector (212); The pump body water outlet (201b) can be connected to the shutdown device (300).

5. The motor pump according to claim 4, characterized in that The axis of the plunger (203), the axis of the water inlet check valve (208), and the axis of the water outlet check valve (209) are parallel; The axis of the plunger (203) is perpendicular to the axis of the bearing assembly (202); The axis center line of the pump body water inlet (201a) is perpendicular to the axis center line of the pump body water outlet (201b), and is parallel to the axis center line of the bearing assembly (202).

6. The motor pump according to claim 1, characterized in that The plunger (230) is provided with a driving groove (203a); The bearing assembly (202) includes a driving bearing (202a), which is installed in the driving groove (203a) and can drive the plunger (230) to reciprocate.

7. The motor pump according to claim 1, characterized in that The plunger pump assembly (200) further includes: a total check valve core (210) and a total check valve spring (211); The total one-way valve core (210) and the total one-way valve spring (211) are arranged in the pump body (201) and are located at the pump body water outlet (201b) of the pump body (201).

8. The motor pump according to claim 1, characterized in that The plunger pump assembly (200) further includes: a water seal (205), a water seal bracket (206) and an oil seal (207); The water seal (205), the water seal bracket (206) and the oil seal (207) constitute a sealing structure, and the pump cover (204) is sealedly connected to the pump body (201) through the sealing structure.

9. The motor pump according to claim 1, characterized in that The motor assembly (100) comprises: a motor (101), a motor bracket (102), an internal gear (103), a planetary gear (104) and a planetary carrier (105); The motor (101) is mounted on the motor bracket (102); The internal gear (103), the planetary gear (104), and the planetary carrier (105) constitute a reduction structure, and the motor (101) is drivingly connected to the bearing assembly (202) via the reduction structure.

10. The motor pump according to claim 7, characterized in that The shutdown device (300) comprises: a valve body (301), a micro switch (302), a quick-connect connector (304), a valve core (306) and a spring (307); The valve body (301) is provided with a valve body water inlet (301a) and a valve body water outlet (301b); The valve body water inlet (301a) is connected to the pump body water outlet (201b) of the pump body (201), and the total one-way valve core (210) and the total one-way valve spring (211) are arranged between the valve body water inlet (301a) and the pump body water outlet (201b); The valve body water outlet (301b) is connected to a quick-connect plug (304); The valve body (301) is connected to a micro switch box (301c), the micro switch (302) is arranged in the micro switch box (301c), and a micro switch cover (303) is provided at the open end of the micro switch box (301c); The valve core (306) is installed in the valve body (301), the valve core small end (306b) of the valve core (306) passes through the spring (307) and is connected to the micro switch (302), and the valve core large end (306a) of the valve core (306) is connected to the quick-connect plug (304).

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