Pumping mechanism and plant protection equipment

Abstract

The utility model discloses a pumping mechanism and plant protection equipment, and relates to the technical field of pumps. The pumping mechanism comprises a driven module, a separator and a power module. The driven module comprises a driven piece. The power module comprises a first shell, a driving device and a power output shaft; the driving device is arranged in the first shell, and the power output shaft is in transmission connection with the driving end of the driving device; the first housing has a first shaft hole. The separator is arranged between the power module and the driven module; the separator is at least partially arranged between the first shaft hole and the driven part, the separator is provided with a separation through hole, and the power output shaft penetrates through the first shaft hole and the separation through hole to be in transmission connection with the driven part. According to the pumping mechanism, the partition piece is arranged between the power module and the driven piece, so that fluid in the working space of the driven piece is prevented from easily flowing into the power module, and the working stability of the pumping mechanism is improved. According to the pumping mechanism adopted by the plant protection equipment, the power module part is not prone to failure and damage, and reliability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of pumps, in particular to a pumping mechanism and plant protection equipment. Background Art

[0002] A pump is a mechanical device that transports fluids or pressurizes fluids. When a pump is used in plant protection equipment, it can pump liquids, thereby providing functions such as spraying liquids. The structure of a pump body is generally divided into a power module and a driven module. The power output shaft of the power module is connected to the driven member of the driven module, so that the driven member is driven to move through the power module. When the driven member moves, the fluid in the working space where the driven member is located is pumped, thereby achieving fluid pumping.

[0003] However, when the follower is in a state of high-speed motion, part of the fluid in the working space of the follower may penetrate into the interior of the power module. After the penetrated fluid comes into contact with the core components inside the power module, it may cause poor transmission, corrosion and damage of components, etc., affecting the working reliability of the pump. Utility Model Content

[0004] The purpose of the embodiments of the utility model is to provide a pumping mechanism and a plant protection device, which are equipped with a separator to improve the working stability of the pumping mechanism.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A pumping mechanism, comprising:

[0007] A driven module, including a driven member;

[0008] The power module comprises a first housing, a driving device and a power output shaft; the driving device is arranged inside the first housing, the power output shaft is drivingly connected to the driving end of the driving device; the first housing is provided with a first shaft hole;

[0009] A partition is arranged between the power module and the driven module; the partition is at least partially arranged between the first shaft hole and the driven member, and the partition is provided with a partition through hole. The power output shaft passes through the first shaft hole and the partition through hole to be transmission-connected with the driven member.

[0010] Optionally, the driven module comprises a second housing, the second housing has a working cavity inside, and the driven member is arranged in the working cavity;

[0011] The second housing is provided with a second shaft hole, and the power output shaft passes through the first shaft hole, the partition through hole, the second shaft hole and extends into the working chamber to be drivingly connected with the driven member.

[0012] Optionally, the partition is at least partially sandwiched between the second housing and the first housing, and surrounds the power output shaft.

[0013] Optionally, the partition is provided with a first liquid drain port and a second liquid drain port which are connected to each other, and the first liquid drain port is formed on a side of the partition close to the driven module.

[0014] Optionally, a partition groove is provided on a side of the partition member close to the driven module, and a notch of the partition groove is the first liquid drain port.

[0015] Optionally, the partition includes a partition body, which includes a main partition plate and a side partition plate surrounding the outer periphery of the main partition plate, and the partition groove is formed in the semi-enclosed space between the main partition plate and the side partition plate; the partition through hole is arranged in the main partition plate, and the side partition plate surrounds the outside of the power output shaft.

[0016] Optionally, the side partition plate is provided with a drainage channel, the second drainage port is provided on the outer wall of the side partition plate, and the first drainage port, the partition groove, the drainage channel and the second drainage port are connected.

[0017] Optionally, a liquid containing groove is provided on a side of the main partition plate close to the driven module, and the liquid containing groove is communicated with the partition groove.

[0018] Optionally, the partition body also includes a blocking block, which is connected to the side partition plate, and blocks the inner side of the drainage channel. A lateral opening is also formed between the blocking block and the side partition plate; the partition groove is connected to the drainage channel through the lateral opening.

[0019] Optionally, the partition comprises a partition body and a plurality of mounting ears, the partition through hole is provided in the partition body, and the plurality of mounting ears are arranged at intervals around the axis of the partition through hole;

[0020] The mounting ear is clamped between the first shell and the second shell; the mounting ear is connected to the first shell, and / or the mounting ear is connected to the second shell.

[0021] Optionally, a plurality of fasteners are included, and the fasteners pass through the second shell, the mounting ears, and the first shell, and the second shell, the mounting ears, and the first shell are fixed by the fasteners.

[0022] Optionally, the partition member includes a partition body, and the partition through hole is provided in the partition body;

[0023] A first positioning portion is provided on a side of the first shell close to the partition body, and a second positioning portion is provided on a side of the partition body close to the first shell, and the first positioning portion and the second positioning portion are plugged and matched;

[0024] A third positioning portion is disposed on a side of the partition body close to the second shell, and a fourth positioning portion is disposed on a side of the second shell close to the partition body. The third positioning portion is plugged into and matched with the fourth positioning portion.

[0025] Optionally, a partition groove is provided on one side of the partition, and a partition convex portion is provided on the other side;

[0026] The second shell is at least partially inserted into the partition groove; and the partition protrusion is inserted into the first shell through the first shaft hole.

[0027] Optionally, the power module includes a first seal and / or a first bearing; a partition accommodating groove is provided on a side of the partition member away from the driven module, and the partition accommodating groove is communicated with the partition through hole;

[0028] The first seal is used to be sleeved outside the power output shaft, and the first seal is used to be arranged in the partition accommodating groove;

[0029] The first bearing is used to be sleeved on the outside of the power output shaft, and the first bearing is used to be arranged in the partition accommodating groove.

[0030] Optionally, the power module includes the first seal and the first bearing, both of which are sleeved on the outside of the power output shaft, both of which are located in the separation accommodating groove, and the first seal is located on the side of the first bearing close to the driven module.

[0031] Optionally, the driven module includes a second seal and / or a second bearing;

[0032] The second seal is used to be sleeved outside the power output shaft, and the second seal is used to be arranged in the second shaft hole;

[0033] The second bearing is used to be sleeved outside the power output shaft, and the second bearing is used to be arranged in the second shaft hole.

[0034] Optionally, the driven module includes the second seal and the second bearing, the second seal and the second bearing are both mounted outside the power output shaft, the second seal and the second bearing are both located in the second shaft hole, and the second seal is located on the side of the second bearing away from the partition.

[0035] Optionally, the driven module includes a second bearing, and a limiting convex rib is provided on a side of the partition close to the driven module, and the limiting convex rib presses against the second bearing.

[0036] Optionally, the limiting ribs are a plurality of arc-shaped ribs.

[0037] Optionally, a plurality of the arc-shaped ribs are arranged in a ring shape around the partition through hole.

[0038] Optionally, a rib opening is provided between any adjacent arc-shaped ribs, and the rib opening is used for discharging liquid in the inner space of the arc-shaped rib.

[0039] Optionally, the pumping mechanism is an impeller pump, and the driven member is an impeller.

[0040] Optionally, the power module includes a driving module and a deceleration module; the deceleration module is arranged between the driven module and the driving module;

[0041] The first housing includes a driving housing and a reduction housing; the driving module includes the driving housing and the driving device, the driving device is arranged in the driving housing, and the driving device includes a driving shaft; the reduction module includes a gear assembly, the reduction housing and the power output shaft, the first shaft hole is arranged in the reduction housing, and the gear assembly includes a driving wheel and a driven wheel that are meshed with each other;

[0042] The drive shaft passes through the drive housing to extend into the reduction housing, the drive shaft is transmission-connected to the driving wheel, and the driven wheel is transmission-connected to the power output shaft; the drive housing is connected to the reduction housing, the reduction housing is connected to the partition, and the partition is connected to the second housing.

[0043] A plant protection device comprises: a device body; and a pumping mechanism as described in any of the above schemes, wherein the pumping mechanism is installed on the device body.

[0044] The beneficial effect of the utility model is that the pumping mechanism is provided with a partition between the power module and the driven member, thereby preventing the fluid in the working space of the driven member from easily flowing into the power module, thereby improving the working stability of the pumping mechanism.

[0045] The pumping mechanism and power module adopted by the plant protection equipment are not prone to failure and damage, and have high reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] The utility model is further described in detail below based on the drawings and embodiments.

[0047] Figure 1 It is a three-dimensional structural schematic diagram of the pumping mechanism described in the embodiment of the utility model;

[0048] Figure 2 for Figure 1 A magnified view of part A in FIG.

[0049] Figure 3 It is a partial structural exploded schematic diagram of the pumping mechanism described in the embodiment of the utility model;

[0050] Figure 4 for Figure 3 A magnified view of part B in FIG.

[0051] Figure 5 It is a cross-sectional view of the pumping mechanism described in the embodiment of the utility model;

[0052] Figure 6 It is a cross-sectional view of a local area of ​​the pumping mechanism of the utility model;

[0053] Figure 7 This is a schematic diagram of the internal structure of the pumping mechanism according to an embodiment of the utility model (the driving module, the speed reduction module and the driven module are decomposed in the figure);

[0054] Figure 8 This is a schematic diagram of the assembly of the deceleration module and the separator in the pumping mechanism of the embodiment of the utility model (the driving wheel of the gear assembly is not shown in the figure);

[0055] Fig. 9 It is a cross-sectional view of the separator described in the embodiment of the utility model;

[0056] Fig.10 This is one of the structural schematic diagrams of the separator described in the embodiment of the utility model;

[0057] Fig.11 This is the second structural schematic diagram of the separator described in the embodiment of the utility model;

[0058] Fig.12 This is the third structural schematic diagram of the separator described in the embodiment of the utility model.

[0059] In the figure: 10, power module; 20, driven module; 30, partition; 101, first housing; 1011, first shaft hole; 1012, first positioning portion; 11, driving module; 111, driving housing; 112, driving device; 113, driving shaft; 12, reduction module; 121, reduction housing; 1211, first mounting hole; 122, gear assembly; 1221, driving wheel; 1222, driven wheel; 123, power output shaft; 13, first seal; 14, first bearing; 15, second seal; 16, second bearing; 21, second housing; 2101, working chamber; 2102 , second mounting hole; 211, second axial hole; 212, fourth positioning portion; 22, follower; 301, partition through hole; 302, first liquid discharge port; 303, second liquid discharge port; 31, partition body; 311, partition groove; 312, partition convex portion; 3121, partition accommodating groove; 313, second positioning portion; 314, third positioning portion; 315, main partition plate; 3151, liquid containing groove; 316, side partition plate; 3161, liquid discharge channel; 317, limiting rib; 3171, rib opening; 318, blocking block; 3181, lateral opening; 32, mounting ear; 321, partition mounting hole. DETAILED DESCRIPTION

[0060] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the embodiments of the present invention will be further described in detail in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention. In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected" and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, or a detachable connection or an integral body; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood in specific circumstances. In the present invention, unless otherwise clearly specified and limited, the first feature "above" or "below" the second feature can include the first and second features directly contacting, and can also include the first and second features not being in direct contact but contacting through another feature between them. Moreover, the first feature being “above”, “above” and “above” the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature being “below”, “below” and “below” the second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0061] Pumping mechanisms are often used to transport fluids or pressurize fluids. The pumping mechanism drives the follower to move through the power module. When the follower moves in its working space, the follower pumps the fluid in the working space. However, during the application of the pumping mechanism, especially when the follower moves at high speed, the liquid in the working space may penetrate into the power module through the gap, which will affect the stability and reliability of the pump.

[0062] Exemplarily, for an impeller pump, the impeller pump includes a power module and a driven module, the housing of the power module and the housing of the driven module are both provided with shaft holes, the output shaft of the power module passes through the shaft hole and penetrates into the working chamber inside the driven module to connect with the impeller located in the working chamber of the driven module, so that the impeller can be driven to rotate by the output shaft of the power module to realize the impeller pumping liquid. However, the output shaft and the impeller are often in a state of high-speed motion. When the impeller pump is working, there may be gaps between the output shaft and the wall of the shaft hole of the driven module housing, and between the output shaft and the wall of the shaft hole of the power module, resulting in poor sealing, thereby causing part of the liquid in the working chamber of the driven module to penetrate into the chamber inside the power module from the wall of the shaft hole of the output shaft and the wall of the shaft hole of the driven module housing, and between the output shaft and the wall of the shaft hole of the power module. The penetration of liquid into the chamber inside the power module may result in poor lubrication of the transmission parts, and the main components in the power module may be easily corroded and damaged, which will affect the service life and safety of the impeller pump. It is understandable that in addition to the impeller pump, other types of pumping mechanisms may also have the same problems as mentioned above.

[0063] Based on this, the utility model provides a pumping mechanism, which is equipped with a partition 30 between the power module 10 and the driven module 20. The partition 30 is used to block liquid and the like outside the power module 10, thereby reducing or avoiding the risk of failure or damage of the power module 10 caused by liquid entering the power module 10, improving the operating reliability of the power module 10 in the pumping mechanism, improving the stability and safety of the pumping structure, and extending the service life of the pumping structure.

[0064] The pumping mechanism can be applied to, but not limited to, plant protection equipment.

[0065] For ease of understanding, the following embodiments take the pumping mechanism as an impeller pump as an example to illustrate the pumping mechanism. Of course, in other embodiments, the pumping mechanism may also be a gear pump, a screw pump, a piston pump, a hydraulic plunger pump, etc.

[0066] The utility model also provides a plant protection device, which includes the aforementioned pumping mechanism. The plant protection device can be a plant protection unmanned vehicle, a plant protection drone, etc. The plant protection device can be used in agriculture to realize automatic spraying of pesticides, nutrient solutions, etc. In some embodiments, the plant protection equipment is equipped with a liquid storage tank and a spraying device, and the pumping mechanism is used to pump the liquid in the liquid storage tank to the spraying device, thereby realizing the spraying operation. With the aforementioned pumping mechanism, the pumping mechanism is not prone to liquid penetration into the power module 10, the pumping mechanism operates stably, and the spraying performance of the plant protection equipment is stable.

[0067] Please refer to Figures 1 to 12 , the structure of the pumping mechanism and the plant protection equipment is explained below.

[0068] The plant protection device comprises a device body and a pumping mechanism, wherein the pumping mechanism is connected to the device body and comprises a power module 10 , a driven module 20 and a partition 30 .

[0069] The power module 10 includes a first housing 101, a drive device 112, and a power output shaft 123. The first housing 101 is provided with a first shaft hole 1011, the drive device 112 is arranged inside the first housing 101, a part of the power output shaft 123 is located inside the first housing 101 and connected to the driving end of the drive device 112, and another part of the power output shaft 123 passes through the first shaft hole 1011 and extends out of the first housing 101. The drive device 112 may be, but is not limited to, a motor.

[0070] The driven module 20 includes a second housing 21 and a driven member 22. The second housing 21 has a working chamber 2101 inside. The driven member 22 is arranged in the working chamber 2101. The working chamber 2101 is the working space where the driven member 22 is located. The second housing 21 is provided with a second axial hole 211 connected to the working chamber 2101. The power output shaft 123 passes through the first axial hole 1011 and the second axial hole 211 to be connected with the transmission. In the present application, taking the driven member 22 as an impeller and the driving device 112 for driving the driven member 22 to rotate as an example, the driven member 22 rotates in the working chamber 2101 to realize the pumping of the liquid. In other embodiments, the driving device 112 can also be used to drive the driven member 22 to perform linear motion, etc. In other embodiments, the driven module 20 may not be configured with the second housing 21, and the working space of the driven member 22 may be provided directly through the shell of other equipment that cooperates with the pumping mechanism.

[0071] The power module 10 is the core part of the pumping mechanism, and the partition 30 is used to prevent the liquid in the working space of the follower 22 from penetrating into the power module 10. The partition 30 is at least partially arranged between the first shaft hole 1011 and the follower 22, or the partition 30 is arranged in the first shaft hole 1011, or the partition 30 blocks the side of the first shaft hole 1011 away from the follower 22, as long as it plays the role of separating the space where the follower 22 is located from the internal space of the power module 10. The partition 30 is also configured with a partition through hole 301, and the power output shaft 123 passes through the first shaft hole 1011, the partition through hole 301 and the second shaft hole 211 to be connected with the follower 22 in transmission.

[0072] In some embodiments, the power module 10 includes a driving module 11 and a deceleration module 12. In some embodiments, the power module 10 only includes the driving module 11. The driving module 11 may be, but is not limited to, a motor module.

[0073] In the related art, in many cases, the second housing 21 of the driven module 20 is directly connected to the first housing 101 of the power module 10, and the working space where the driven member 22 is located and the internal space of the power module 10 are sealed by a sealing ring sleeved on the outside of the power output shaft 123, but the sealing effect of this sealing ring is limited, and the liquid in the working space where the driven member 22 is located may flow to the internal space of the power module 10 through the gap next to the sealing ring. In the pumping mechanism of the utility model, a partition 30 is added on the side of the power module 10 close to the driven module 20, and the seeping liquid is first blocked by the partition 30, which prevents the seeping liquid from entering the internal space of the power module 10, which is beneficial to protecting the power module 10 and improving the working reliability and safety of the pumping mechanism.

[0074] Please continue to refer to Figure 5 , Figure 6 , Figures 9 to 12 , the separator 30 is of an enclosing design, the separator 30 is at least partially sandwiched between the first housing 101 and the second housing 21, and the separator 30 surrounds the power output shaft 123. In other words, the partition through hole 301 is a hole structure with only two ends opening through and the hole wall being an annular closed hole. In this way, the separator 30 surrounds and protects the part of the power output shaft 123 located between the power module 10 and the driven module 20, preventing the section of the power output shaft 123 from being affected by the external environment, and ensuring the stable operation of the power output shaft 123. In other embodiments, the separator 30 only partially surrounds the power output shaft 123, that is, the two ends of the partition through hole 301 are through and there is an opening on the side to expose the power output shaft 123.

[0075] In order to improve the protection effect of the power module 10, the partition 30 has not only a liquid isolation function, but also a liquid drainage function, that is, the partition 30 is also used to discharge the leaked liquid out of the pumping mechanism. Figure 4 , Figures 8 to 12 The physical structure of the partition 30 is provided with a first drain port 302 and a second drain port 303 which are connected to each other. The first drain port 302 is formed on a side of the partition 30 close to the driven module 20, and the second drain port 303 is used to discharge the liquid from the partition 30. In this way, during the operation of the pumping mechanism, even if liquid seeps out of the driven module 20, the seeping liquid can enter the interior of the partition 30 through the first drain port 302 and be discharged from the partition 30 through the second drain port 303.

[0076] In this embodiment, the second liquid discharge port 303 is provided on the outer wall of the partition 30, and the second liquid discharge port 303 is a communication port for realizing communication between the interior of the partition 30 and the exterior of the pumping mechanism, and the liquid can be directly discharged to the exterior of the pumping mechanism through the second liquid discharge port 303. In other embodiments, the liquid can also be discharged from the partition 30 through the second liquid discharge port 303 and then enter the liquid discharge channel of other pumping mechanisms, and then be discharged from the pumping mechanism through the liquid discharge channel.

[0077] Please continue to refer to Figures 3 to 12 A separation groove 311 is provided on one side of the partition 30 close to the driven module 20 , and the notch of the separation groove 311 is the first liquid discharge port 302 .

[0078] Alternatively, if Figure 3 , Figure 6 , Figures 8 to 12 As shown, the partition groove 311 can provide a space for accommodating liquid, so that the liquid leaked from the driven module 20 enters the partition groove 311 through the first liquid discharge port 302, and then the liquid in the partition groove 311 is discharged from the partition 30 through the second liquid discharge port 303, which can prevent the seeping liquid from entering the power module 10 and prevent the liquid from contacting the driving device 112, transmission parts, etc. inside the power module 10. Optionally, the partition groove 311 can be used for plug-in cooperation with the second housing 21 of the driven module 20.

[0079] In other embodiments, instead of configuring the partition groove 311 on the partition 30, a groove for accommodating liquid may be configured on a side of the second shell 21 close to the partition 30 to provide a accommodating space for liquid seeping out of the internal working chamber 2101 of the driven module 20, so that the liquid in the accommodating space is discharged through the drain port.

[0080] Please refer to Figure 2 , Figure 5 , Figure 6 , Figures 8 to 12 The partition 30 includes a partition body 31 and a mounting body connected to each other, and the mounting body is used to be connected to the first housing 101 and / or the second housing 21. The partition body 31 is used to separate liquid, and the partition body 31 is also used to drain liquid. By separating liquid and draining liquid, liquid can be prevented from entering the power module 10. The partition body 31 includes a main partition plate 315 and a side partition plate 316. The side partition plate 316 surrounds the outer periphery of the main partition plate 315. The partition groove 311 is formed in the semi-enclosed space surrounded by the main partition plate 315 and the side partition plate 316. The partition through hole 301 is provided in the main partition plate 315, and the side partition plate 316 surrounds the outside of the power output shaft 123. In this way, the cooperation of the main partition plate 315 and the side partition plate 316 can not only form a partition groove 311 with a first drainage port 302 on one side, but also the side partition plate 316 surrounds the outside of the power output shaft 123, and the side partition plate 316 surrounds the power output shaft 123 to protect the power output shaft 123. In other embodiments, the side partition plate 316 may not be configured, and only the main partition plate 315 may be configured.

[0081] Optionally, a drainage channel 3161 communicating with the partition groove 311 is provided on the side partition plate 316, and the second drainage port 303 is provided on the outer wall of the side partition plate 316. The liquid seeping out of the working chamber 2101 of the driven module 20 enters the partition groove 311 through the first drainage port 302, and is discharged from the second drainage port 303 through the drainage channel 3161. The side partition plate 316 is located between the first housing 101 and the second housing 21. In this way, the pumping mechanism can be directly discharged from the side wall of the partition 30. In this way, not only is the drainage method simple and fast, but there is no need to configure a structure for drainage in the power module 10 or the driven module 20, and the overall structure is simple.

[0082] The power output shaft 123 in the pumping mechanism extends along the y-axis direction of the pumping mechanism. In this embodiment, when the pumping mechanism is used, the y-axis of the pumping mechanism is substantially parallel to the horizontal plane. In other embodiments, the y-axis may extend in the vertical direction, and the driven module 20 is located below the power module 10. Exemplarily, when the pumping mechanism is applied to plant protection equipment, the y-axis direction of the pumping mechanism is the horizontal direction of the plant protection equipment, that is, the power module 10, the partition 30, and the driven module 20 are arranged along the horizontal direction (such as the front-to-back direction, the left-to-right direction) of the plant protection equipment. The side partition plate 316 is arranged around the power output shaft 123, and the pumping mechanism can be configured as follows: the second drainage port 303 faces the bottom of the plant protection equipment, so that the liquid seeping from the working chamber 2101 of the driven module 20 passes through the first drainage port 302 and the partition groove 311 of the partition 30, and the liquid in the partition groove 311 easily flows into the drainage channel 3161 inside the side partition plate 316 under the action of gravity, and is discharged from the second drainage port 303 on the outer wall of the side partition plate 316, and the drainage is easy. Of course, if the pumping mechanism is used, even if the y-axis direction of the pumping mechanism is substantially perpendicular to the horizontal plane, the drainage channel 3161 and the second drainage port 303 configured on the partition side plate also play a role in discharging the liquid.

[0083] Please continue to refer to Figure 6 , Figures 9 to 11 A liquid containing groove 3151 is provided on one side of the main partition plate 315 close to the driven module 20, and the liquid containing groove 3151 is communicated with the partition groove 311. In other words, the liquid containing groove 3151 is additionally provided at the bottom of the partition groove 311, and the partition groove 311 is provided for the second housing 21 to be partially inserted, and also plays a role in containing liquid to a certain extent. The provision of the liquid containing groove 3151 is conducive to expanding the capacity of the partition 30 that can contain liquid.

[0084] In this embodiment, the liquid containing groove 3151 is disposed around the partition through hole 301 .

[0085] Please continue to refer to Figure 4 , Figure 8 , Fig. 9The inventors found that in order to facilitate the processing of the drainage channel 3161, the drainage channel 3161 may be processed into a straight hole shape, and the inner wall of the side partition plate 316 forms a flow port of the drainage channel 3161. In other words, the port of the drainage channel 3161 close to the power output shaft 123 is the flow port, and the port of the drainage channel 3161 close to the outside is the second drainage port 303. Based on this, in some embodiments, in order to prevent impurities or liquid outside the pumping mechanism from directly entering the separation groove 311 through the straight drainage channel 3161, the separation body 31 also includes a shielding block 318, which is connected to the side partition plate 316, and a lateral opening 3181 is formed between the shielding block 318 and the side partition plate 316, and the separation groove 311 is connected to the drainage channel 3161 through the lateral opening 3181 and the flow port. By setting the shielding block 318 , if impurities or liquid want to enter the separation groove 311 , they will be blocked by the shielding block 318 , so that impurities or liquid are not easy to enter the separation groove 311 .

[0086] When the pumping mechanism is used, the second liquid discharge port 303 is in a downward position, and even if impurities or liquid enter the liquid discharge channel 3161 due to wind or other factors, the impurities or liquid will fall downward again under the shielding of the shielding block 318 and be discharged from the second liquid discharge port 303, preventing the impurities from reversely entering the separation groove 311 through the second liquid discharge port 303. It can be understood that when the pumping mechanism is used, even if the second liquid discharge port 303 is not in a downward position, the shielding block 318 also has a blocking effect on the impurities or liquid.

[0087] In other embodiments, Figures 8 to 11 As shown, the partition 30 may not be provided with the shielding block 318. In other embodiments, in order to prevent impurities from entering the partition groove 311 in the reverse direction through the second liquid discharge port 303, the liquid discharge channel 3161 of the side partition plate 316 may also be configured to have a zigzag shape.

[0088] In other embodiments, the drainage channel may not be provided in the side partition plate 316, but an independent drainage channel 3161 that is not connected to the chamber where the driving device 112 is located may be provided in the first shell 101, and the liquid in the partition groove 311 is introduced into the drainage channel 3161 of the first shell 101 and then discharged.

[0089] In other embodiments, the liquid containing groove 3151 may not be configured, and a larger separation groove 311 may be configured instead.

[0090] In other embodiments, when the partition 30 is configured with the liquid containing groove 3151 , a portion of the liquid discharge channel 3161 may also be configured on the main partition plate 315 .

[0091] Please continue to refer to Figure 3 , Figure 5 , Figure 6 , Figure 8 In order to realize the installation and fixation of the partition 30 on the basis of providing the partition 30 with the partition and water seepage prevention function, the partition 30 includes a partition body 31 and a plurality of mounting bodies, and the mounting bodies are mounting ears 32. A partition through hole 301 is provided in the partition body 31, and a plurality of mounting ears 32 are distributed outside the partition body 31 at intervals around the axis of the partition through hole 301, and the mounting ears 32 are connected to the partition body 31. The mounting ears 32 are clamped between the first shell 101 and the second shell 21, and the mounting ears 32 are connected to the first shell 101 and / or the mounting ears 32 are connected to the second shell 21. The main functions of the partition 30, such as liquid isolation and drainage functions, are provided by the partition body 31, and the plurality of mounting ears 32 distributed at intervals around the power output shaft 123 can not only realize the reliable fixation of the partition 30, but also reduce the material and weight of the partition 30.

[0092] In order to make the assembly process of the entire pumping mechanism simpler and faster, multiple fasteners are configured, and the multiple fasteners correspond to the multiple mounting ears 32. The fasteners pass through the second housing 21, the mounting ears 32 and the first housing 101, and the fasteners are used to fix the first housing 101, the mounting ears 32 and the second housing 21. For example, the first housing 101 is configured with a first mounting hole 1211, the mounting ears 32 of the partition 30 are configured with a partition mounting hole 321, and the second housing 21 is configured with a second mounting hole 2102. The fastener is a fastening screw; during assembly, the screw of the fastening screw passes through the second mounting hole 2102, the partition mounting hole 321 and the first mounting hole 1211, and then the nut is locked on the screw of the fastening screw from the other side.

[0093] In other embodiments, the first housing 101, the mounting ears 32, and the second housing 21 may also be connected in other ways. In other embodiments, the mounting ears 32 may not be configured.

[0094] Please continue to refer to Figure 5 , Figure 6 , Figure 8 The partition 30 includes a partition body 31, and a partition through hole 301 is provided in the partition body 31. In order to improve the assembly efficiency between the partition 30 and the second housing 21, and between the first housing 101 and the partition 30, the partition 30 and the first housing 101 are positioned and matched by a first positioning component, and the partition 30 and the second housing 21 are positioned and matched by a second positioning component.

[0095] Optionally, a first positioning portion 1012 is provided on a side of the first shell 101 close to the partition body 31, a second positioning portion 313 is provided on a side of the partition body 31 close to the first shell 101, and the first positioning portion 1012 and the second positioning portion 313 are plugged in and matched. Specifically, the first positioning assembly includes the first positioning portion 1012 and the second positioning portion 313, one of which is a convex portion and the other is a concave portion between the first positioning portion 1012 and the second positioning portion 313. Optionally, a third positioning portion 314 is provided on a side of the partition body 31 close to the second shell 21, a fourth positioning portion 212 is provided on a side of the second shell 21 close to the partition body 31, and the third positioning portion 314 and the fourth positioning portion 212 are plugged in and matched. Specifically, the second positioning assembly includes the third positioning portion 314 and the fourth positioning portion 212, one of which is a convex portion and the other is a concave portion between the third positioning portion 314 and the fourth positioning portion 212. The two positioning parts in the first positioning assembly are used to realize the preliminary positioning of the separator 30 and the first shell 101 during assembly and the radial position limit after assembly, and the two positioning parts in the second positioning assembly are used to realize the preliminary positioning of the separator 30 and the second shell during assembly and the radial position limit after assembly. In one embodiment, the first positioning part 1012 is an annular groove, the second positioning part 313 is an annular protrusion, the third positioning part 314 is an annular groove, and the fourth positioning part 212 is an annular protrusion.

[0096] For example, when assembling the pumping mechanism, the partition 30 is first placed on one side of the active module, and the partition 30 and the first housing 101 are first positioned and matched by the first positioning assembly; then the driven module 20 is placed on one side of the partition 30, and the partition 30 and the second housing 21 are positioned and matched by the second positioning assembly; and then the first housing 101, the partition 30 and the second housing 21 are locked by fasteners. Through the cooperation of the positioning assembly and the fasteners, the preliminary assembly positioning and locking and fixing between the partition 30 and the two side housings can be achieved, and the assembly is accurate and efficient.

[0097] Please continue to refer to Figure 5 , Figure 6 , Figure 8 , a partition groove 311 is provided on one side of the partition 30, and a partition convex portion 312 is provided on the other side, at least a portion of the second housing 21 is inserted into the partition groove 311, and the partition convex portion 312 is inserted into the first housing 101 through the first axial hole 1011. In this way, the partition 30 and the first housing 101, and the second housing 21 and the partition 30 are matched through steps, which can improve the sealing performance of the matching portion between the partition 30 and the first housing 101, and the sealing performance of the matching portion between the partition 30 and the second housing 21.

[0098] Please continue to refer to Figures 9 to 12 , Figure 5 , Figure 6, a partition accommodating groove 3121 is provided on the side of the partition 30 away from the driven module 20, and the partition accommodating groove 3121 is communicated with the partition through hole 301. Optionally, the power module 10 includes a first seal 13, the first seal 13 is used to be sleeved outside the power output shaft 123, and the first seal 13 is used to be arranged in the partition accommodating groove 3121, the first seal 13 can improve the sealing performance between the power output shaft 123 and the hole wall of the partition through hole 301, and the first seal 13 is used to prevent the liquid seeping out of the driven module 20 from entering the interior of the first housing 101.

[0099] Optionally, the power module 10 includes a first bearing 14, which is used to be mounted on the outside of the power output shaft 123, and the first bearing 14 is used to be set in the partition accommodating groove 3121. When the pumping mechanism is working, the partition 30 is fixed to the outer shell of the power module 10, and the power output shaft 123 will rotate relative to the partition 30. By configuring the first bearing 14 between the power output shaft 123 and the partition 30, the rotation performance of the power output shaft 123 can be improved.

[0100] In one embodiment, the power module 10 includes a first seal 13 and a first bearing 14, both of which are sleeved on the outside of the power output shaft 123, and both of which are located in the separation accommodating groove 3121, and the first seal 13 is located on the side of the first bearing 14 close to the driven module 20. The first seal 13 is used as a shaft seal for the first bearing 14, and the first seal 13 can prevent liquid from seeping into the first bearing 14, thereby protecting the first bearing 14. It is understandable that in other embodiments, only the first seal 13 or the first bearing 14 may be configured.

[0101] Optionally, the driven module 20 includes a second seal 15, which is used to be sleeved on the outside of the power output shaft 123, and the second seal 15 is used to be set in the second shaft hole 211. The second seal 15 can improve the sealing performance between the power output shaft 123 and the hole wall of the second shaft hole 211. The second seal 15 is used to prevent liquid seeping out of the driven module 20 from entering the interior of the first shell 101.

[0102] Optionally, the driven module 20 includes a second bearing 16, which is used to be sleeved on the outside of the power output shaft 123, and the second bearing 16 is used to be set in the second shaft hole 211. When the pumping mechanism is working, the second shell 21 of the driven module 20 is fixed, and the power output shaft 123 will rotate relative to the second shell 21 of the driven module 20. By configuring the second bearing 16 between the power output shaft 123 and the second shell 21, the rotation performance of the power output shaft 123 can be improved.

[0103] In one embodiment, the driven module 20 includes a second seal 15 and a second bearing 16, both of which are sleeved on the outside of the power output shaft 123, and both of which are located in the second shaft hole 211, and the second seal 15 is located on the side of the second bearing 16 away from the partition 30. The second seal 15 is used as a shaft seal for the second bearing 16, and the second seal 15 can prevent liquid from seeping into the second bearing 16, thereby protecting the second bearing 16. It is understandable that in other embodiments, only the second seal 15 or the second bearing 16 may be configured.

[0104] Reference Figure 5 , Figure 6 The partition body 31 of the partition 30 is used as a cover for the first shaft hole 1011 of the first shell 101. The pumping mechanism includes a second seal 15, a second bearing 16, a first seal 13, and a first bearing 14, which can not only reduce the friction of the output power shaft relative to the second shell 21 of the driven module 20 and the partition 30, but also improve the transmission performance of the pumping mechanism. In addition, the first seal 13 and the second seal 15 are used as two shaft seals, and the two shaft seals also prevent the liquid in the working chamber 2101 of the second shell 21 from seeping into the interior of the first shell 101. The pumping mechanism prevents the liquid in the impeller working chamber 2101 from seeping into the interior of the first shell 101 of the power module 10 when the pump is working, thereby protecting the drive device 112 and transmission components in the power module 10.

[0105] Please continue to refer to Figures 9 and 10 , Figure 5 , Figure 6, the driven module 20 includes a second bearing 16, and a limiting rib 317 is provided on a side of the partition 30 close to the driven module 20, and the limiting rib 317 presses against the second bearing 16. Optionally, the partition 30 includes a partition body 31, and the partition body 31 includes a main partition plate 315 and a side partition plate 316, and the limiting rib 317 is provided on a side of the main partition plate 315 close to the driven module 20, and the limiting rib 317 supports the outer ring structure and / or the inner ring structure of the second bearing 16. When the partition body 31 is provided with a partition groove 311, the limiting rib 317 is provided in the partition groove 311, so that the partition groove 311 can accommodate a part of the second shell and provide a certain liquid chamber, while reliably supporting the second bearing 16. It can be understood that the limiting rib 317 supports the second bearing 16, so that the second bearing 16 is at a certain distance from the main partition plate 315 provided with the partition through hole 301. Even if liquid seeps from the gap between the second bearing 16 and the power output shaft 123 into the partition groove 311, the liquid is at a certain distance from the partition through hole 301, and the liquid is more likely to flow out from the drainage channel of the side partition plate 316. In other embodiments, the limiting rib 317 may not be provided, and the second bearing 16 may be directly supported by the main partition plate 315.

[0106] Optionally, the limiting ribs 317 are a plurality of arcuate ribs. The arcuate ribs can adapt to the structure of the second bearing 16, and while reliably supporting the outer ring or inner ring of the second bearing 16, occupy as little space as possible in the separation groove 311, making the structure more compact. In other embodiments, the limiting ribs 317 can also be straight ribs.

[0107] Optionally, a plurality of arcuate ribs are arranged in a ring shape around the partition through hole 301, so that the plurality of arcuate ribs surround the outer side of the power output shaft 123, do not cause interference, and reliably support the second bearing 16. In other embodiments, the limiting rib 317 may not be configured with an arcuate rib arranged in a ring shape, and the limiting rib 317 includes two symmetrically arranged straight ribs.

[0108] Optionally, a rib opening 3171 is provided between any adjacent arcuate ribs, and the rib opening 3171 is used to discharge the liquid in the inner space of the arcuate rib. In some embodiments, two directly adjacent arcuate ribs may be completely spaced to form a rib opening 3171. In some embodiments, when the pumping mechanism is applied to plant protection equipment or other equipment, the driven module 20, the partition 30, and the power module 10 are arranged in the horizontal direction, and at least one rib opening 3171 is formed at the bottom of the limiting rib 317, so that when the liquid extends from the gap between the second bearing 16 and the power output shaft 123 into the space inside the limiting rib 317, it is convenient to discharge from the rib opening 3171 at the bottom of the limiting rib 317 to the outer space of the limiting rib 317 to prevent the liquid from approaching the partition through hole 301. There may be one or more rib openings 3171.

[0109] The power module 10 may be configured in at least two ways as follows.

[0110] Configuration mode 1 of the power module 10: The power module 10 includes a driving module 11 and a reduction module 12 , wherein the reduction module 12 is a gear reduction box and is disposed between the driven module 20 and the driving module 11 .

[0111] The driving module 11 includes a driving housing 111 and a driving device 112, wherein the driving device 112 is disposed in the driving housing 111 and includes a driving shaft 113. The driving device 112 is a motor, and the driving shaft 113 is a main shaft of the motor. The reduction module 12 includes a gear assembly 122, a reduction housing 121 and a power output shaft 123, wherein a first shaft hole 1011 is disposed in the reduction housing 121, and the gear assembly 122 includes a driving wheel 1221 and a driven wheel 1222 that are meshed with each other. The first housing 101 includes the driving housing 111 of the driving module 11 and the reduction housing 121 of the reduction module 12.

[0112] The drive shaft 113 passes through the drive housing 111 to extend into the reduction housing 121, the drive shaft 113 is transmission-connected to the driving wheel 1221, and the driven wheel 1222 is transmission-connected to the power output shaft 123; the drive housing 111 is connected to the reduction housing 121, the reduction housing 121 is connected to the partition 30, and the partition 30 is connected to the second housing 21.

[0113] Exemplarily, the drive shaft 113 of the drive motor is connected to the gear assembly 122 in the reduction module 12. After deceleration, the power output shaft 123 of the reduction module 12 is connected to the impeller in the working chamber 2101, thereby driving the impeller to rotate to pump liquid. The configuration of the reduction module 12 is conducive to reducing load, increasing torque, reducing noise and vibration, etc., and improving the working performance of the pumping mechanism.

[0114] Configuration mode 2 of the power module 10: the power module 10 only includes the power module 10, and the first housing 101 is the housing of the power module 10. The driving device 112 is a driving motor.

[0115] In the utility model, the partition 30 of the pumping mechanism has the function of isolating liquid, and the partition 30 also has the function of discharging liquid. Combined with the seals arranged between the power output shaft 123 and the partition 30, and between the power output shaft 123 and the outer shell of the driven module 20, the sealing and anti-seepage effect can be further enhanced. Therefore, the pumping mechanism of the utility model has better performance in preventing liquid from leaking out of the working chamber 2101 of the driven module 20, and also has the function of discharging the leaked liquid.

[0116] In the description of this document, it should be understood that the terms "upper", "lower", "left", "right" and other positions or positional relationships are based on the positions or positional relationships shown in the drawings, which are only for the convenience of description and simplification of operation, rather than indicating or implying 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 the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning. In the description of this specification, the description of the reference terms "an embodiment", "example", 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 invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. In addition, it should be understood that although this specification is described in accordance with the implementation mode, not each implementation mode contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should take the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other implementation modes that can be understood by those skilled in the art. The technical principles of the present invention are described above in conjunction with specific embodiments. These descriptions are only for explaining the principle of the utility model and cannot be interpreted as limiting the protection scope of the utility model in any way. Based on the explanation here, technicians in this field can think of other specific implementation methods of the utility model without creative work, and these methods will fall within the protection scope of the utility model.

Claims

1. A pumping mechanism, characterized in that: include: A driven module (20), comprising a driven member (22); A power module (10) comprises a first housing (101), a driving device (112) and a power output shaft (123); the driving device (112) is arranged inside the first housing (101), and the power output shaft (123) is drivingly connected to a driving end of the driving device (112); the first housing (101) is provided with a first shaft hole (1011); A partition (30) is arranged between the power module (10) and the driven module (20); the partition (30) is provided with a partition through hole (301), and the power output shaft (123) passes through the first shaft hole (1011) and the partition through hole (301) to be transmission-connected with the driven member (22).

2. The pumping mechanism according to claim 1, characterized in that: The driven module (20) comprises a second housing (21), the second housing (21) has a working chamber (2101) inside, and the driven member (22) is arranged in the working chamber (2101); The second housing (21) is provided with a second shaft hole (211), and the power output shaft (123) passes through the first shaft hole (1011), the partition through hole (301), and the second shaft hole (211) and extends into the working chamber (2101) to be transmission-connected with the driven member (22).

3. The pumping mechanism according to claim 2, characterized in that: The partition (30) is at least partially sandwiched between the second housing (21) and the first housing (101), and surrounds the outside of the power output shaft (123).

4. The pumping mechanism according to claim 1, characterized in that: The partition (30) is provided with a first liquid drain port (302) and a second liquid drain port (303) which are connected to each other. The first liquid drain port (302) is formed on a side of the partition (30) close to the driven module (20).

5. The pumping mechanism according to claim 4, characterized in that: A separation groove (311) is provided on a side of the separation member (30) close to the driven module (20), and a notch of the separation groove (311) is the first liquid discharge port (302).

6. The pumping mechanism according to claim 5, characterized in that: The partition (30) includes a partition body (31), the partition body (31) includes a main partition plate (315) and a side partition plate (316) surrounding the outer periphery of the main partition plate (315), the partition groove (311) is formed in the semi-enclosed space between the main partition plate (315) and the side partition plate (316); the partition through hole (301) is provided in the main partition plate (315), and the side partition plate (316) surrounds the outside of the power output shaft (123).

7. The pumping mechanism according to claim 6, characterized in that: The side partition plate (316) is provided with a drainage channel (3161), the second drainage port (303) is provided on the outer wall of the side partition plate (316), and the first drainage port (302), the partition groove (311), the drainage channel (3161) and the second drainage port (303) are connected.

8. The pumping mechanism according to claim 6, characterized in that: A liquid containing groove (3151) is provided on one side of the main partition plate (315) close to the driven module (20), and the liquid containing groove (3151) is communicated with the partition groove (311).

9. The pumping mechanism according to claim 7, characterized in that: The partition body (31) further comprises a shielding block (318), wherein the shielding block (318) is connected to the side partition plate (316), and the shielding block (318) shields the inner side of the drainage channel (3161), and a lateral opening (3181) is formed between the shielding block (318) and the side partition plate (316); the partition groove (311) is connected to the drainage channel (3161) through the lateral opening (3181).

10. The pumping mechanism according to claim 2, characterized in that: The partition (30) comprises a partition body (31) and a plurality of mounting ears (32), the partition through hole (301) is provided on the partition body (31), and the plurality of mounting ears (32) are arranged at intervals around the axis of the partition through hole (301); The mounting ear (32) is clamped between the first shell (101) and the second shell (21); the mounting ear (32) is connected to the first shell (101), and / or the mounting ear (32) is connected to the second shell (21).

11. The pumping mechanism according to claim 10, characterized in that: It comprises a plurality of fasteners, wherein the fasteners pass through the second shell (21), the mounting ears (32) and the first shell (101), and the second shell (21), the mounting ears (32) and the first shell (101) are fixed by the fasteners.

12. The pumping mechanism according to claim 2, characterized in that: The partition (30) comprises a partition body (31), and the partition through hole (301) is provided in the partition body (31); A first positioning portion (1012) is provided on a side of the first shell (101) close to the partition body (31), and a second positioning portion (313) is provided on a side of the partition body (31) close to the first shell (101), and the first positioning portion (1012) and the second positioning portion (313) are plugged and matched; A third positioning portion (314) is provided on a side of the partition body (31) close to the second shell (21), and a fourth positioning portion (212) is provided on a side of the second shell (21) close to the partition body (31), and the third positioning portion (314) is plugged into and matched with the fourth positioning portion (212).

13. The pumping mechanism according to claim 2, characterized in that: The separator (30) is provided with a separation groove (311) on one side and a separation convex portion (312) on the other side; The second housing (21) is at least partially inserted into the partition groove (311); and the partition protrusion (312) is inserted into the first housing (101) through the first axial hole (1011).

14. The pumping mechanism according to claim 1, characterized in that: The power module (10) comprises a first sealing member (13) and / or a first bearing (14); a separation accommodating groove (3121) is provided on a side of the partition member (30) facing away from the driven module (20), and the separation accommodating groove (3121) is communicated with the separation through hole (301); The first sealing member (13) is used for being sleeved on the outside of the power output shaft (123), and the first sealing member (13) is used for being arranged in the partition accommodating groove (3121); The first bearing (14) is used to be sleeved outside the power output shaft (123), and the first bearing (14) is used to be arranged in the partition accommodating groove (3121).

15. The pumping mechanism according to claim 14, characterized in that: The power module (10) comprises the first seal (13) and the first bearing (14), the first seal (13) and the first bearing (14) are both sleeved outside the power output shaft (123), the first seal (13) and the first bearing (14) are both located in the separation accommodating groove (3121), and the first seal (13) is located on a side of the first bearing (14) close to the driven module (20).

16. The pumping mechanism according to claim 2, characterized in that: The driven module (20) comprises a second seal (15) and / or a second bearing (16); The second sealing member (15) is used for being sleeved on the outside of the power output shaft (123), and the second sealing member (15) is used for being arranged in the second shaft hole (211); The second bearing (16) is used to be sleeved outside the power output shaft (123), and the second bearing (16) is used to be arranged in the second shaft hole (211).

17. The pumping mechanism according to claim 16, characterized in that The driven module (20) comprises the second seal (15) and the second bearing (16), the second seal (15) and the second bearing (16) are both sleeved outside the power output shaft (123), the second seal (15) and the second bearing (16) are both located in the second shaft hole (211), and the second seal (15) is located on the side of the second bearing (16) away from the partition (30).

18. The pumping mechanism according to claim 16, characterized in that: The driven module (20) comprises a second bearing (16), and a limiting convex rib (317) is provided on a side of the partition (30) close to the driven module (20), and the limiting convex rib (317) presses against the second bearing (16).

19. The pumping mechanism according to claim 18, characterized in that The limiting convex ribs (317) are a plurality of arc-shaped convex ribs.

20. The pumping mechanism according to claim 19, characterized in that A plurality of arc-shaped convex ribs are arranged in a ring shape around the partition through hole (301).

21. The pumping mechanism according to claim 20, characterized in that A rib opening (3171) is provided between any adjacent arc-shaped ribs, and the rib opening (3171) is used to discharge liquid in the inner space of the arc-shaped rib.

22. A pumping mechanism according to any one of claims 1 to 21, characterized in that: The pumping mechanism is an impeller pump, and the driven member (22) is an impeller.

23. The pumping mechanism according to any one of claims 2-3, 10-13, 16-21, characterized in that: The power module (10) comprises a driving module (11) and a reduction module (12); the reduction module (12) is arranged between the driven module (20) and the driving module (11); The first housing (101) comprises a driving housing (111) and a reduction housing (121); the driving module (11) comprises the driving housing (111) and the driving device (112); the driving device (112) is arranged in the driving housing (111); the driving device (112) comprises a driving shaft (113); the reduction module (12) comprises a gear assembly (122), the reduction housing (121) and the power output shaft (123); the first shaft hole (1011) is arranged in the reduction housing (121); the gear assembly (122) comprises a driving wheel (1221) and a driven wheel (1222) which are meshed with each other; The drive shaft (113) passes through the drive housing (111) to extend into the reduction housing (121); the drive shaft (113) is transmission-connected to the driving wheel (1221); the driven wheel (1222) is transmission-connected to the power output shaft (123); the drive housing (111) is connected to the reduction housing (121); the reduction housing (121) is connected to the partition (30); and the partition (30) is connected to the second housing (21).

24. A plant protection device, characterized in that: include: Equipment body; A pumping mechanism as described in any one of claims 1-23, wherein the pumping mechanism is installed on the equipment body.

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