Peristaltic pump and cleaning device

Abstract

A peristaltic pump (10) and a cleaning device are disclosed. The peristaltic pump (10) comprises a base (12), a planetary gear mechanism, and a driving member (16). The planetary gear mechanism comprises a sun gear (18), planet gears (20), and an internal gear ring (22). An output shaft of the driving member (16) is fixedly connected to the sun gear (18). The base (12) is fixedly connected to the driving member (16). The base (12) is provided with first positioning portions (17). The planet gears (20) are rotatably sleeved on the first positioning portions (17) and mesh with the sun gear (18). The internal gear ring (22) encloses the planet gears (20) and meshes with the planet gears (20).

Description

Peristaltic pump and cleaning device

[0001] Priority information

[0002] This application claims priority to and the benefit of Chinese Patent Application No. 202422347218.6, 202411345339.5, filed on September 25, 2024, in the China National Intellectual Property Administration, and which is incorporated by reference herein in its entirety as if fully copied in this application. TECHNICAL FIELD

[0003] The present application relates to the technical field of cleaning devices, and in particular to a peristaltic pump and a cleaning device. BACKGROUND

[0004] In the related art, a scrubber uses an electromagnetic pump to supply water, and the flow precision is poor, which results in too much residual water on the ground after the scrubber is used or poor cleaning effect. With product iteration, new water pumps such as peristaltic pumps and diaphragm pumps have emerged, and the flow control precision has been greatly improved.

[0005] However, when installing the planetary wheel, in order to ensure the meshing of the inner and outer teeth in the planetary wheel system and the accurate position of the planetary wheel, a special auxiliary tool is needed for assembly, which results in low assembly efficiency and high labor cost. SUMMARY

[0006] The embodiments of the present application provide a peristaltic pump and a cleaning device to solve at least one of the above technical problems.

[0007] A peristaltic pump according to an embodiment of the present application includes a base, a planetary gear mechanism, and a driving member, the planetary gear mechanism includes a sun gear, a planetary wheel, and an inner tooth disc;

[0008] The output shaft of the driving member is fixedly connected to the sun gear;

[0009] The base is fixedly connected to the driving member, the base is provided with a first positioning portion, the planetary wheel is rotatably sleeved on the first positioning portion and engaged with the sun gear, and the inner tooth disc covers the planetary wheel and is engaged with the planetary wheel.

[0010] In the peristaltic pump, the planetary wheel is rotatably sleeved on the first positioning portion, which facilitates positioning of the planetary wheel, the installation of the planetary gear mechanism can be conveniently completed without the need for an auxiliary tool, and the assembly efficiency can be improved.

[0011] In some embodiments, the peristaltic pump comprises a roller, the planetary gear mechanism comprises a carrier, the carrier is provided with a mounting portion, the roller is movably mounted on the mounting portion, the inner tooth disc is provided with a second positioning portion, the mounting portion is connected to the second positioning portion, so that the driving member drives the carrier and the roller to move through the inner tooth disc.

[0012] In some embodiments, the first positioning portion comprises a positioning pin, the positioning pin protrudes from the base, and the planetary wheel is rotatably sleeved on the positioning pin.

[0013] In some embodiments, the second positioning portion comprises a positioning groove, the positioning groove is formed on one side of the inner tooth disc facing the carrier, the mounting portion is inserted into the positioning groove, and the positioning groove limits the mounting portion in the rotation direction of the inner tooth disc.

[0014] In some embodiments, the base is fixedly connected to the driving member, the base is provided with a first through hole, and the sun gear passes through the first through hole to engage with the planetary wheel.

[0015] In some embodiments, the peristaltic pump comprises a hose and a top cover, the top cover is buckled on the base, and the hose is arranged between the top cover and the roller.

[0016] In some embodiments, the periphery of the top cover is provided with one of a clamping groove and a clasp, the periphery of the base is provided with the other one of the clamping groove and the clasp, and the clasp is clamped in the clamping groove.

[0017] In some embodiments, the peristaltic pump comprises a first valve nozzle and a second valve nozzle, one end of the hose is connected to the first valve nozzle, and the other end of the hose is connected to the second valve nozzle.

[0018] In some embodiments, the top cover is provided with a third positioning portion, the carrier is provided with a second through hole, and the third positioning portion passes through the second through hole, so that the carrier is rotatably mounted on the top cover.

[0019] In some embodiments, the base is provided with a third through hole, the housing of the driving member is provided with a fourth through hole, and the peristaltic pump comprises a fastener, the fastener passes through the third through hole and the fourth through hole to fixedly connect the base and the driving member.

[0020] The cleaning device of the present application comprises the peristaltic pump of any one of the above embodiments.

[0021] The peristaltic pump of the above cleaning device is rotatably sleeved on the first positioning portion, which facilitates the positioning of the planetary wheel, and the installation of the planetary gear mechanism can be conveniently completed without the need for auxiliary tools, thereby improving the assembly efficiency.

[0022] Additional aspects and advantages of the present application will be in part apparent and in part expressly stated below. i00100 BRIEF DESCRIPTION OF DRAWINGS

[0023] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description, including the appended drawings, wherein:

[0024] FIG. 1 is a front view of a peristaltic pump according to an embodiment of the present application;

[0025] FIG. 2 is an exploded schematic view of a partial structure of a peristaltic pump according to an embodiment of the present application;

[0026] FIG. 3 is an exploded schematic view of a peristaltic pump according to an embodiment of the present application;

[0027] FIG. 4 and FIG. 5 are schematic views of a structure of an internal gear disc according to an embodiment of the present application;

[0028] FIG. 6 is a schematic view of a structure of a partial structure of a peristaltic pump according to an embodiment of the present application;

[0029] FIG. 7 is a schematic view of a structure of a top cover according to an embodiment of the present application.

[0030] Main element symbol explanation: peristaltic pump 10, base 12, driving member 16, first positioning portion 17, sun gear 18, planetary gear 20, internal gear disc 22, roller 24, planetary carrier 26, mounting portion 28, second positioning portion 30, first through hole 32, hose 34, top cover 36, clamping groove 38, clamping buckle 40, first valve nozzle 42, second valve nozzle 44, third positioning portion 46, second through hole 48, third through hole 50, fourth through hole 52. DETAILED DESCRIPTION

[0031] Embodiments of the present application are described in detail below with reference to the attached drawings, which are meant to be exemplary, and are not to be construed as limiting the present application.

[0032] In the description of the application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application. In the description of the application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0033] In the description of the application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected. It can be mechanically connected, or electrically connected. It can be directly connected, or indirectly connected through an intermediate medium. It can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0034] In this application, unless otherwise explicitly specified and limited, the first feature "on" or "under" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the first feature is higher than the second feature in horizontal height. The first feature "under", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the first feature is lower than the second feature in horizontal height.

[0035] The disclosure herein provides many different embodiments or examples for implementing different structures of the application. In order to simplify the disclosure of the application, the components and arrangements of specific examples are described herein. Of course, they are only examples, and the purpose is not to limit the application. In addition, the application can repeatedly refer to numbers and / or letters in different examples, and such repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or arrangements discussed. In addition, the application provides examples of various specific processes and materials, but those skilled in the art can realize the application of other processes and / or the use of other materials.

[0036] In the related art, the scrubber adopts an electromagnetic pump to supply water, and the flow precision is poor, resulting in too much residual water on the ground after the scrubber is used or poor cleaning effect. With product iteration, new water pumps such as peristaltic pumps and diaphragm pumps appear, and the flow control precision is greatly improved.

[0037] However, the existing peristaltic pump adopts a transmission sequence of a fixed gear ring, a sun gear, a planet gear, a planet carrier and a roller, and when the peristaltic pump realizes the delivery of liquid in a liquid path, the planet gear needs to be engaged with the fixed gear ring and the sun gear at the same time. When the planet gear is installed, it is difficult to simultaneously ensure that the planet gear system simultaneously realizes the engagement of the inner and outer teeth and the accurate center distance of the planet gear, and therefore a special auxiliary tool is required for assembling the planet gear, which is low in assembly efficiency and high in labor cost.

[0038] Referring to FIGS. 1-3, a peristaltic pump 10 provided by the embodiments of the present application includes a base 12, a planetary gear mechanism and a driving member 16. The planetary gear mechanism includes a sun gear 18, a planet gear 20 and an inner tooth disc 22.

[0039] The output shaft of the driving member 16 is fixedly connected to the sun gear 18.

[0040] The base 12 is fixedly connected to the driving member 16, the base 12 is provided with a first positioning portion 17, the planet gear 20 is rotatably sleeved on the first positioning portion 17 and engaged with the sun gear 18, and the inner tooth disc 22 covers the planet gear 20 and is engaged with the planet gear 20.

[0041] In the peristaltic pump 10, the planet gear 20 is rotatably sleeved on the first positioning portion 17, which facilitates the positioning of the planet gear 20, and the installation of the planetary gear mechanism can be simply completed without auxiliary tools, so that the assembly efficiency can be improved.

[0042] Specifically, the peristaltic pump 10 includes a hose 34 made of elastic material, and the hose 34 has one or more extrusion rollers outside. When the extrusion rollers move along the length direction of the hose 34, pressure is applied to the hose 34 on the pump head, a negative pressure area is formed in the hose 34, liquid can be sucked in, and the liquid flows in the hose 34. Under the continuous movement of the extrusion rollers 24, the peristaltic pump 10 realizes the function of delivering liquid. The driving member 16 drives the planetary gear mechanism to move, and the planetary gear mechanism drives the extrusion rollers to rotate, so that the frequency of the extrusion rollers extruding the hose 34 can be well controlled.

[0043] The planetary gear mechanism includes the sun gear 18, the planet gear 20 and the inner tooth disc 22. The sun gear 18 is fixedly connected to the output shaft of the driving member 16, the driving member 16 works, the output shaft drives the sun gear 18 to rotate, the sun gear 18 is engaged with the planet gear 20, the planet gear 20 is engaged with the inner tooth disc 22, and thus power transmission is realized.

[0044] Due to the multi-point meshing and load dispersion characteristics of the planetary gear 20, the transmission efficiency is generally high, while being able to withstand a large torque and load, and the uniform distribution of the planetary gear 20 makes the transmission process more stable. In addition, the planetary gear mechanism is small in size, light in weight, and compact in structure, and is suitable for application in devices such as scrubbers, which have certain restrictions on the size of the transmission mechanism.

[0045] The base 12 of the peristaltic pump 10 is fixedly connected with the driving member 16, the output shaft of the driving member 16 is fixed with the sun gear 18, and when the planetary gear 20 is installed in the base 12 through the first positioning part 17, the planetary gear 20 can be first meshed with the sun gear 18, and then the inner toothed disc 22 is covered outside the planetary gear 20 and is meshed with the planetary gear 20.

[0046] The first positioning part 17 defines the position of the planetary gear 20 in the base 12, and when the planetary gear 20 is installed, no additional auxiliary tool is required, thereby improving the efficiency of installing the planetary gear 20.

[0047] Further, in terms of installation sequence, when the planetary gear 20 is installed in the base 12 through the first positioning part 17, the planetary gear 20 is meshed with the sun gear 18. When the inner toothed disc 22 is installed, the inner toothed disc 22 only needs to be rotated by one to two teeth to be successfully meshed with the planetary gear 20. In this way, the sun gear 18, the planetary gear 20, and the inner toothed disc 22 can be quickly and simply installed.

[0048] Optionally, the power source of the driving member 16 includes but is not limited to electric power, hydraulic power, pneumatic power, etc.

[0049] In an embodiment, the driving member 16 is a motor. Optionally, the motor includes but is not limited to a brush DC motor, a brushless motor, a stepper motor, a magnetic encoder motor, etc.

[0050] Referring to FIG. 3, in some embodiments, the peristaltic pump 10 includes a roller 24, and the planetary gear mechanism includes a planet carrier 26, the planet carrier 26 is provided with a mounting part 28, the roller 24 is movably mounted in the mounting part 28, the inner toothed disc 22 is provided with a second positioning part 30, and the mounting part 28 is connected with the second positioning part 30, so that the driving member 16 drives the planet carrier 26 and the roller 24 to move through the inner toothed disc 22.

[0051] In this way, the mounting part 28 of the planet carrier 26 is positioned and connected with the second positioning part 30, so that the planet carrier 26 and the roller 24 can be quickly and conveniently connected with the inner toothed disc 22.

[0052] Specifically, the planet carrier 26 is provided with the mounting part 28, and the roller 24 is movably mounted in the mounting part 28. The inner toothed disc 22 is provided with the second positioning part 30, and the mounting part 28 is positioned and connected with the inner toothed disc 22 through the second positioning part 30. In this way, the installation of the roller 24, the planet carrier 26, and the inner toothed disc 22 is facilitated.

[0053] The transmission between the planetary gear 20 and the roller 24 is realized through the inner toothed disc 22. On one hand, the inner toothed cover is arranged on the planetary gear 20, so that the sun gear 18, the planetary gear 20 and the inner toothed disc 22 form a planetary gear set which moves in a relatively closed space, thereby protecting the planetary gear set from foreign matters and preventing the gears from being damaged.

[0054] On the other hand, the sun gear 18, the planetary gear 20 and the inner toothed disc 22 all rotate, the planetary carrier 26 and the roller 24 are driven to rotate by the inner toothed disc 22, so that the transmission between the planetary gear 20 and the roller 24 is isolated by the inner toothed disc 22. In the case of changing the model or the diameter of the roller 24, the position of the second positioning part 30 on the inner toothed disc 22 needs to be adjusted correspondingly, so as to realize the connection between the inner toothed disc 22 and the planetary carrier 26.

[0055] If the planetary carrier 26 is directly connected with the planetary gear 20, the planetary gear set needs to be redesigned and manufactured after the model or the diameter of the roller 24 is changed, which greatly increases the design and manufacturing cost.

[0056] Please refer to FIG. 2 and FIG. 3. In some embodiments, the first positioning part 17 includes a positioning pin which is protruded from the base 12, and the planetary gear 20 is rotatably sleeved on the positioning pin.

[0057] In this way, the installation of the planetary gear 20 is facilitated.

[0058] Specifically, the positioning pin can provide an accurate positioning point and a reliable fixing function, so as to ensure that the planetary gear 20 can be installed to the base 12 according to the design requirements and engaged with the sun gear 18.

[0059] In the embodiment shown in FIG. 3, a mounting hole is arranged at the center of the planetary gear 20, and the positioning pin is inserted into the mounting hole to position and fix the position of the planetary gear 20. Meanwhile, the planetary gear 20 rotates relative to the positioning pin and realizes the transmission after being engaged with the sun gear 18.

[0060] The positioning pin accurately positions the planetary gear 20, which can simplify the assembly process and improve the assembly efficiency. Meanwhile, in the production process of the peristaltic pump 10, the overall precision and consistency of the product can be significantly improved.

[0061] Alternatively, the positioning pin can be integrally formed with the base 12. Or, the positioning pin can be fixedly arranged on the base 12 by means of gluing, welding or threaded connection.

[0062] Please refer to FIG. 3, FIG. 5 and FIG. 6. In some embodiments, the second positioning part 30 includes a positioning groove which is arranged on the side of the inner toothed disc 22 facing the planetary carrier 26, and the mounting part 28 is inserted into the positioning groove to limit the mounting part 28 in the rotation direction of the inner toothed disc 22.

[0063] In this way, the positioning groove can position and fix the mounting portion 28, facilitating the installation of the planet carrier 26 and the inner tooth disc 22.

[0064] Specifically, when the planet carrier 26 is installed with the inner tooth disc 22, the roller 24 is first installed to the mounting portion 28, and then the mounting portion 28 is inserted into the positioning groove, thereby completing the installation of the planet carrier 26 and the inner tooth disc 22.

[0065] In the illustrated embodiment, the positioning groove is a long strip-shaped through groove extending radially from the center of the inner tooth disc 22 outward, and the number of the positioning grooves corresponds to the number of the mounting portions 28. When the mounting portion 28 is installed in the positioning groove, the positioning groove limits the mounting portion 28 in the rotation direction of the inner tooth disc 22. In this way, the positioning groove can be suitable for rollers 24 and planet carriers 26 of different sizes.

[0066] After replacing the rollers 24 of different diameters and the corresponding size planet carriers 26, the mounting portions 28 of the planet carrier 26 can be inserted at different positions in the positioning groove, thereby realizing the assembly of the inner tooth disc 22 with the rollers 24 and planet carriers 26 of different sizes. In this way, the inner tooth disc 22 can be suitable for peristaltic pumps 10 with different flow requirements.

[0067] Alternatively, the positioning groove can be a closed circular groove, the size of which corresponds to the size of the mounting portion 28, that is, when the mounting portion 28 is inserted into the positioning groove, the positioning groove can limit the mounting portion 28 in the rotation direction of the inner tooth disc 22.

[0068] Further, a plurality of closed circular grooves are provided on the inner tooth disc 22 and extend radially from the center of the inner tooth disc 22 outward, thereby making the positioning groove suitable for rollers 24 and planet carriers 26 of different sizes.

[0069] Alternatively, the positioning groove can be a key groove, and the shape of the bottom of the mounting portion 28 matches the key groove, thereby realizing the limitation of the mounting portion 28 in the rotation direction of the inner tooth disc 22 by the positioning groove.

[0070] It should be noted that the positioning groove is not limited to the long strip-shaped through groove, the closed circular groove, and the key groove, but can also include other forms of positioning grooves that can limit the mounting portion 28 in the rotation direction of the inner tooth disc 22.

[0071] Referring to FIGS. 2 and 3, in some embodiments, the base 12 is fixedly connected with the driving member 16, the base 12 is provided with a first through hole 32, and the sun gear 18 is arranged through the first through hole 32 and engaged with the planet gear 20.

[0072] In this way, after the base 12 is fixedly connected with the driving member 16, the sun gear 18 arranged through the first through hole 32 can be engaged with the planet gear 20 installed in the base 12 for transmission.

[0073] Specifically, the sun gear 18 is fixedly connected with the output shaft of the driving member 16, the base 12 is fixedly connected with the driving member 16, and the sun gear 18 is engaged with the planetary gear 20 arranged in the base 12 through the first through hole 32. After the base 12 is fixedly connected with the driving member 16 and the inner gear cover is arranged on the outer circle of the planetary gear 20, the sun gear 18 and the planetary gear 20 are located between the base 12 and the inner gear, so that foreign matters can be prevented from falling into the gears to damage the gears.

[0074] Please refer to FIG. 3, FIG. 6 and FIG. 7. In some embodiments, the peristaltic pump 10 comprises a hose 34 and a top cover 36, the top cover 36 is buckled on the base 12, and the hose 34 is arranged between the top cover 36 and the roller 24.

[0075] In this way, the top cover 36 can fix the position of the hose 34, so that the movement of the roller 24 can squeeze the hose 34 to realize the function of the peristaltic pump 10.

[0076] Specifically, when the peristaltic pump 10 starts to work, the squeezing roller 24 moves along the length direction of the hose 34 and contacts the hose 34. The contact causes the hose 34 to be compressed and closed, so as to form a closed space. When the squeezing roller moves away, the hose 34 will return to the original state, which will form a negative pressure in the hose 34, so as to help to suck the liquid and realize the function of pumping the liquid.

[0077] The top cover 36 is buckled on the base 12, and the hose 34 is arranged between the top cover 36 and the roller 24, so that the roller 24 can squeeze the hose 34 under the driving of the planet carrier 26, and the top cover 36 can fix the position of the hose 34, so as to ensure that the roller 24 stably contacts the hose 34, thereby the peristaltic pump 10 can stably output the liquid.

[0078] Please refer to FIG. 1 and FIG. 3. In some embodiments, the periphery of the top cover 36 is provided with one of a clamping groove 38 and a clamping buckle 40, the periphery of the base 12 is provided with the other one of the clamping groove 38 and the clamping buckle 40, and the clamping buckle 40 is clamped in the clamping groove 38.

[0079] In this way, the base 12 and the top cover 36 of the peristaltic pump 10 are connected through the clamping groove 38 and the clamping buckle 40, so that the installation of the base 12 and the top cover 36 is simple and reliable, and the peristaltic pump 10 is convenient to disassemble and maintain.

[0080] Specifically, the base 12 comprises one of the clamping groove 38 and the clamping buckle 40, the top cover 36 comprises the other one of the clamping groove 38 and the clamping buckle 40, and when the top cover 36 of the peristaltic pump 10 is installed on the base 12, the clamping buckle 40 is clamped in the clamping groove 38, so as to realize the connection of the base 12 and the top cover 36.

[0081] The combination of the clamping groove 38 and the clamping buckle 40 has high stability, which can ensure that the connected base 12 and the top cover 36 will not be loose or fall off during normal use. At the same time, the connection of the clamping groove 38 and the clamping buckle 40 usually does not require additional fixing materials, so as to reduce the production cost and material consumption of the peristaltic pump 10. In addition, due to the simplicity of installation and disassembly, the cost of maintenance and replacement can also be reduced.

[0082] Referring to FIG. 3, in some embodiments, the peristaltic pump 10 comprises a first valve nozzle 42 and a second valve nozzle 44, one end of the hose 34 is connected to the first valve nozzle 42, and the other end of the hose 34 is connected to the second valve nozzle 44.

[0083] In this way, the first valve nozzle 42 and the second valve nozzle 44 can be connected in the liquid path pipeline, and the flow direction, speed or flow rate of the liquid in the hose 34 can be controlled to transport the liquid through the action of the peristaltic pump 10.

[0084] Specifically, the first valve nozzle 42 and the second valve nozzle 44 are arranged at both ends of the hose 34, and the flow direction, speed or flow rate of the liquid in the hose 34 can be controlled by opening or closing the channel in the hose 34 through the first valve nozzle 42 and the second valve nozzle 44, as well as the degree of opening and closing.

[0085] Alternatively, the first valve nozzle 42 is a liquid inlet valve nozzle, and the second valve nozzle 44 is a liquid outlet valve nozzle. Or, the first valve nozzle 42 and the second valve nozzle 44 can both be liquid inlet and outlet, that is, the liquid can flow reversely in the hose 34.

[0086] Referring to FIGS. 6 and 7, in some embodiments, the top cover 36 is provided with a third positioning part 46, and the planet carrier 26 is provided with a second through hole 48, and the second through hole 48 penetrates the third positioning part 46, so that the planet carrier 26 is rotatably mounted on the top cover 36.

[0087] In this way, the top cover 36 fixes the planet carrier 26, ensuring stable movement of the planet carrier 26.

[0088] Specifically, the second through hole 48 on the planet carrier 26 is sleeved on the third positioning part 46, and at the same time, the mounting part 28 of the planet carrier 26 is inserted into the positioning groove of the inner gear disc 22, and under the driving of the inner gear disc 22, the planet carrier 26 and the inner gear disc 22 rotate together. In this way, the planet carrier 26 rotates between the top cover 36 and the inner gear disc 22, which can fix the planet carrier 26 and ensure stable movement of the planet carrier 26 between the top cover 36 and the inner gear disc 22.

[0089] Referring to FIG. 2, in some embodiments, the base 12 is provided with a third through hole 50, the housing of the driving member 16 is provided with a fourth through hole 52, and the peristaltic pump 10 comprises a fastener (not shown in the figure), which penetrates the third through hole 50 and the fourth through hole 52 to fixedly connect the base 12 and the driving member 16.

[0090] Thus, the base 12 and the driving member 16 are fixed by the fastener, so that the connection between the base 12 and the driving member 16 is firm and reliable.

[0091] Specifically, the base 12 is provided with a third through hole 50, the housing of the driving member 16 is provided with a fourth through hole 52, and the base 12 and the housing of the driving member 16 are connected by the fastener, so that the accurate alignment between the connected parts is ensured, and the stable fastening force is provided by the fastener connection, so that the durability and reliability of the connection are ensured, and the stability of the connection can be maintained even in the case of vibration or impact.

[0092] In one embodiment, the fastener is a screw.

[0093] In summary, the sun gear 18 is mounted on the output shaft of the driving member 16, the base 12 is fixedly connected with the driving member 16 by the fastener, the planetary gears 20 are loosely fitted on the first positioning part 17 of the base 12, and the inner tooth disc 22 is placed on the planetary gears 20; the hole in the planet carrier 26 is loosely fitted on the second positioning part 30 of the top cover 36, the roller 24 is sleeved on the mounting part 28 of the planet carrier 26, the mounting part 28 is clamped in the first positioning part 17 on the end surface of the inner tooth disc 22; the hose 34 is arranged between the roller 24 and the inner wall of the top cover 36, and the first valve nozzle 42 and the second valve nozzle 44 are arranged at the two ends of the hose 34.

[0094] When the peristaltic pump 10 works, if the motor drives the sun gear 18 to rotate clockwise, the planetary gears 20 rotate counterclockwise on the first positioning part 17, the planetary gears 20 drive the inner tooth disc 22 to rotate counterclockwise, the inner tooth disc 22 drives the planet carrier 26 and the roller 24 thereon to rotate synchronously, and the roller 24 extrudes the hose 34 to realize the liquid path rotation.

[0095] The first positioning part 17 of the base 12 solves the positioning problem of the planetary gears 20, and since the sun gear 18 is engaged with the planetary gears 20 in advance, when the inner tooth disc 22 is installed, only a small angle of rotation is required to ensure that the inner tooth disc 22 is engaged with the three planetary gears 20 at the same time, which greatly improves the installation efficiency.

[0096] Through the design of the second positioning part 30 on the inner tooth disc 22, the inner tooth disc 22 can be adapted to the roller 24 with any center distance, and the flow adjustment is not limited by the gear ratio.

[0097] In addition, since the planet carrier 26 is manufactured by a powder metallurgy mold and the planetary gears 20 are manufactured by an injection mold, the planet carrier 26 is re-manufactured for the roller 24 with different center distances, which greatly reduces the adjustment cost compared with re-designing and manufacturing the planetary gears 20.

[0098] The cleaning device of the embodiment of the application includes the peristaltic pump 10 of any of the above embodiments.

[0099] The planetary wheel 20 is rotatably sleeved on the first positioning portion 17, so that the positioning of the planetary wheel 20 is facilitated. The inner tooth disc 22 is provided with the second positioning portion 30, and the planet carrier 26 is positioned and connected with the second positioning portion 30, so that the positioning of the planet carrier 26 and the inner tooth disc 22 is facilitated. The planetary gear mechanism and the roller 24 can be simply and conveniently installed without auxiliary tooling, and the assembly efficiency can be improved.

[0100] Specifically, the cleaning device includes but is not limited to a floor washing machine, a vacuum cleaner, a sweeping robot or other devices with cleaning functions.

[0101] In one embodiment, the cleaning device includes a floor washing machine, the peristaltic pump 10 is installed on the machine body of the floor washing machine, and the first valve nozzle 42 and the second valve nozzle 44 are connected to the liquid pipeline of the floor washing machine, so as to supply water when the floor washing machine cleans the working surface or the mop.

[0102] It should be noted that the above explanations and descriptions of the embodiments and beneficial effects of the peristaltic pump 10 are also applicable to the cleaning device of the present application. To avoid redundancy, they will not be described in detail here.

[0103] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiments or examples are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0104] Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limiting the present application. Those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

Claims

1. A peristaltic pump characterized by, The peristaltic pump comprises a base, a planetary gear mechanism and a driving member, the planetary gear mechanism comprises a sun gear, a planet gear and an inner toothed disc; An output shaft of the driving member is fixedly connected with the sun gear; The base is fixedly connected with the driving member, the base is provided with a first positioning part, the planet gear is rotatably sleeved on the first positioning part and engaged with the sun gear, and the inner toothed disc covers the planet gear and is engaged with the planet gear.

2. The peristaltic pump of claim 1, wherein, The peristaltic pump comprises a base, a planetary gear mechanism and a driving member, the planetary gear mechanism comprises a sun gear, a planet gear and an inner toothed disc; 3. The peristaltic pump of claim 2, wherein, The second positioning part comprises a positioning groove, the positioning groove is arranged on a side of the inner toothed disc facing the planet carrier, and the mounting part is inserted into the positioning groove, so that the positioning groove limits the mounting part in the rotation direction of the inner toothed disc.

4. A peristaltic pump according to claim 2 or 3, characterised in that, The peristaltic pump comprises a hose and a top cover, the top cover is buckled on the base, and the hose is arranged between the top cover and the roller.

5. The peristaltic pump of claim 4, wherein, The peristaltic pump comprises a first valve nozzle and a second valve nozzle, one end of the hose is connected with the first valve nozzle, and the other end of the hose is connected with the second valve nozzle.

6. A peristaltic pump according to claim 4 or 5, wherein, The peristaltic pump comprises a first valve nozzle and a second valve nozzle, one end of the hose is connected with the first valve nozzle, and the other end of the hose is connected with the second valve nozzle.

7. A peristaltic pump according to any one of claims 4-6, characterized in that, The peristaltic pump comprises a first valve nozzle and a second valve nozzle, one end of the hose is connected with the first valve nozzle, and the other end of the hose is connected with the second valve nozzle.

8. A peristaltic pump according to any one of claims 1 to 7, wherein, The first positioning part comprises a positioning pin, the positioning pin is protruded from the base, and the planet gear is rotatably sleeved on the positioning pin.

9. A peristaltic pump according to any one of claims 1-8, characterized in that, The base is provided with a first through hole, and the sun gear passes through the first through hole and is engaged with the planet gear.

10. A peristaltic pump according to any one of claims 1 to 9, wherein, The base is provided with a third through hole, the housing of the driving member is provided with a fourth through hole, the peristaltic pump comprises a fastener, the fastener passes through the third through hole and the fourth through hole to fixedly connect the base and the driving member.

11. A cleaning apparatus, characterized by The peristaltic pump comprises a base, a planetary gear mechanism and a driving member, the planetary gear mechanism comprises a sun gear, a planet gear and an inner toothed disc;

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