Peristaltic pump and cleaning device

Abstract

The utility model discloses a peristaltic pump and cleaning equipment. The peristaltic pump comprises a base, a planetary gear mechanism and a driving part, wherein the planetary gear mechanism comprises a sun gear, a planet gear and an inner fluted disc. And an output shaft of the driving piece is fixedly connected with the sun gear. The base is fixedly connected with the driving part, the base is provided with a first positioning part, the planet wheel is rotatably arranged on the first positioning part in a sleeving mode and meshed with the sun wheel, and the planet wheel is covered with the inner fluted disc and meshed with the inner fluted disc. According to the peristaltic pump, the planetary gear is rotatably arranged on the first positioning part in the sleeving manner, so that the planetary gear can be conveniently positioned, the installation of the planetary gear mechanism can be simply and conveniently completed without an auxiliary tool, and the assembly efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cleaning equipment, and particularly relates to a peristaltic pump and a cleaning equipment. Background Art

[0002] In the related art, a floor washer uses an electromagnetic pump for water supply, with poor flow accuracy, resulting in excessive residual water on the ground or poor cleaning effect after the floor washer is used. With the product iteration, new types of water pumps such as peristaltic pumps and diaphragm pumps have emerged, with a significant improvement in the flow control accuracy.

[0003] However, when installing the planetary gear in a peristaltic pump, in order to ensure the meshing of the internal and external teeth of the planetary gear train and the accurate position of the planetary gear, a special auxiliary tooling is required for assembly, resulting in low assembly efficiency and high labor costs. Summary of the Utility Model

[0004] The embodiments of the utility model provide a peristaltic pump and a cleaning equipment to solve at least one of the above technical problems.

[0005] A peristaltic pump according to an embodiment of the utility model includes a base, a planetary gear mechanism and a driving member. The planetary gear mechanism includes a sun gear, a planetary gear and an internal gear disk.

[0006] The output shaft of the driving member is fixedly connected to the sun gear.

[0007] The base is fixedly connected to the driving member. The base is provided with a first positioning portion. The planetary gear is rotatably sleeved on the first positioning portion and meshes with the sun gear. The internal gear disk covers the planetary gear and meshes with the planetary gear.

[0008] In the above peristaltic pump, the planetary gear is rotatably sleeved on the first positioning portion, which is convenient for positioning the planetary gear. The installation of the planetary gear mechanism can be simply completed without auxiliary tooling, and the assembly efficiency can be improved.

[0009] In some embodiments, the peristaltic pump includes a roller. The planetary gear mechanism includes a planetary carrier. The planetary carrier is provided with an installation portion. The roller is movably installed on the installation portion. The internal gear disk is provided with a second positioning portion. The installation portion is connected to the second positioning portion, so that the driving member drives the planetary carrier and the roller to move through the internal gear disk.

[0010] In some embodiments, the first positioning portion includes a positioning pin. The positioning pin protrudes from the base. The planetary gear is rotatably sleeved on the positioning pin.

[0011] In some embodiments, the second positioning portion includes a positioning groove which is formed on one side of the internal gear disk facing the planet carrier, and the mounting portion is inserted into the positioning groove so as to limit the mounting portion in the rotation direction of the internal gear disk.

[0012] In some embodiments, the base is fixedly connected to the driving member, and a first through hole is formed in the base, and the sun gear passes through the first through hole and meshes with the planet gear.

[0013] In some embodiments, the peristaltic pump includes 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.

[0014] In some embodiments, one of a clamping groove and a clamping buckle is provided on the periphery of the top cover, and the other of the clamping groove and the clamping buckle is provided on the periphery of the base, and the clamping buckle is clamped in the clamping groove.

[0015] In some embodiments, the peristaltic pump includes a first nozzle and a second nozzle, one end of the hose is connected to the first nozzle, and the other end of the hose is connected to the second nozzle.

[0016] In some embodiments, the top cover is provided with a third positioning portion, and a second through hole is formed in the planet carrier, and the second through hole passes through the third positioning portion so that the planet carrier is rotatably mounted on the top cover.

[0017] In some embodiments, a third through hole is formed in the base, a fourth through hole is formed in the housing of the driving member, and the peristaltic pump includes a fastener which passes through the third through hole and the fourth through hole to fixedly connect the base and the driving member.

[0018] A cleaning device according to an embodiment of the present invention includes the peristaltic pump according to any one of the above embodiments.

[0019] In the above cleaning device, the planet gear is rotatably sleeved on the first positioning portion, which is convenient for positioning the planet gear, and the installation of the planetary gear mechanism can be simply completed without auxiliary tooling, and the assembly efficiency can be improved.

[0020] The additional aspects and advantages of the present invention will be partly given in the following description, partly will become obvious from the following description, or will be understood through the practice of the present invention. Description of the Drawings

[0021] The above and / or additional aspects and advantages of the present invention will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

[0022] Figure 1It is the front view of the peristaltic pump according to the embodiment of the present utility model;

[0023] Figure 2 It is an exploded schematic view of a partial structure of the peristaltic pump according to the embodiment of the present utility model;

[0024] Figure 3 It is an exploded schematic view of the peristaltic pump according to the embodiment of the present utility model;

[0025] Figure 4 and Figure 5 It is a schematic structural view of the internal gear disk according to the embodiment of the present utility model;

[0026] Figure 6 It is a schematic structural view of a partial structure of the peristaltic pump according to the embodiment of the present utility model;

[0027] Figure 7 It is a schematic structural view of the top cover according to the embodiment of the present utility model.

[0028] Main element symbol description:

[0029] Peristaltic pump 10, base 12, driving member 16, first positioning portion 17, sun gear 18, planet gear 20, internal gear disk 22, roller 24, planet carrier 26, mounting portion 28, second positioning portion 30, first through hole 32, hose 34, top cover 36, card slot 38, snap 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. Specific embodiments

[0030] The following details the embodiments of the present utility model. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for explaining the present utility model and should not be construed as limiting the present utility model.

[0031] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, 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 thus should not be construed as limiting the present utility model. In the description of the present utility model, "a plurality of" means two or more unless otherwise specifically defined.

[0032] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection. It may be a mechanical connection or an electrical connection. It may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0033] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact of the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "over", and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "beneath", and "underneath" the second feature includes the first feature being directly below and obliquely below the second feature, or simply indicating that the horizontal height of the first feature is lower than that of the second feature.

[0034] The present disclosure provides many different embodiments or examples for implementing different structures of the present utility model. To simplify the disclosure of the present utility model, the components and settings of specific examples are described herein. Of course, they are merely examples and are not intended to limit the present utility model. In addition, the present utility model may repeat reference numerals and / or reference letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present utility model provides examples of various specific processes and materials, but those of ordinary skill in the art can be aware of the application of other processes and / or the use of other materials.

[0035] In the related art, a floor washer uses an electromagnetic pump for water supply, with poor flow accuracy, resulting in excessive residual water on the ground or poor cleaning effect after using the floor washer. With the product iteration, new types of water pumps such as peristaltic pumps and diaphragm pumps have emerged, with a significant improvement in flow control accuracy.

[0036] However, in the existing peristaltic pump, when implementing the transmission of liquid in the liquid path in the transmission sequence from the fixed ring gear and the sun gear to the planet gear, the planet carrier, and then to the roller, the planet gear needs to be meshed with the fixed ring gear and the sun gear simultaneously. When installing the planet gear, it is difficult to ensure simultaneously that the planetary gear train realizes both internal and external tooth meshing and the accurate center distance of the planet gear. Therefore, a special auxiliary tooling is required for assembling the planet gear, resulting in low assembly efficiency and high labor costs.

[0037] Please refer toFigures 1 to 3 , a peristaltic pump 10 provided by an embodiment of the present utility model includes a base 12, a planetary gear mechanism, and a driving member 16. The planetary gear mechanism includes a sun gear 18, planetary gears 20, and an internal gear disk 22.

[0038] The output shaft of the driving member 16 is fixedly connected to the sun gear 18.

[0039] The base 12 is fixedly connected to the driving member 16. The base 12 is provided with a first positioning portion 17. The planetary gears 20 are rotatably sleeved on the first positioning portion 17 and mesh with the sun gear 18. The internal gear disk 22 covers the planetary gears 20 and meshes with the planetary gears 20.

[0040] In the above peristaltic pump 10, the planetary gears 20 are rotatably sleeved on the first positioning portion 17, which is convenient for positioning the planetary gears 20. The installation of the planetary gear mechanism can be simply completed without auxiliary tooling, and the assembly efficiency can be improved.

[0041] Specifically, the peristaltic pump 10 includes a hose 34 made of an elastic material. One or more pressing rollers are provided on the outside of the hose 34. When the pressing rollers move along the length direction of the hose 34, pressure is applied to the hose 34 on the pump head, creating a negative pressure area in the hose 34, which can suck in liquid and cause the liquid to flow in the hose 34. Under the continuous movement of the pressing rollers 24, the peristaltic pump 10 realizes the function of transporting liquid. By driving the planetary gear mechanism to move with the driving member 16, and the planetary gear mechanism drives the pressing rollers to rotate, the frequency of the pressing rollers pressing the hose 34 can be better controlled.

[0042] The planetary gear mechanism includes a sun gear 18, planetary gears 20, and an internal gear disk 22. The sun gear 18 is fixedly connected to the output shaft of the driving member 16. When the driving member 16 works, the sun gear 18 is driven to rotate by the output shaft. The sun gear 18 meshes with the planetary gears 20, and the planetary gears 20 mesh with the internal gear disk 22, thereby realizing power transmission.

[0043] Due to the multi-point meshing and load dispersion characteristics of the planetary gears 20, the transmission efficiency is usually high. At the same time, it can withstand large torques and loads. The uniform distribution of the planetary gears 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 applications in equipment such as floor washing machines where there are certain restrictions on the volume of the transmission mechanism.

[0044] The base 12 of the peristaltic pump 10 is fixedly connected to the driving member 16. The output shaft of the driving member 16 is fixed to the sun gear 18. When the planetary gears 20 are installed on the base 12 through the first positioning portion 17, they can first mesh with the sun gear 18, and then the internal gear disk 22 covers the outside of the planetary gears 20 and meshes internally with the planetary gears 20.

[0045] The first positioning portion 17 defines the position of the planetary gear 20 within the base 12. When installing the planetary gear 20, no additional auxiliary tooling is required, thereby improving the installation efficiency of the planetary gear 20.

[0046] Furthermore, in terms of the installation sequence, when the planetary gear 20 is installed on the base 12 through the first positioning portion 17, it meshes with the sun gear 18. When installing the internal gear disk 22, the internal gear disk 22 only needs to rotate one or two teeth to successfully mesh with the planetary gear 20. In this way, the installation of the sun gear 18, planetary gear 20, and internal gear disk 22 can be achieved quickly and simply.

[0047] Optionally, the power source of the driving member 16 includes but is not limited to electric, hydraulic power, pneumatic power, etc.

[0048] In one embodiment, the driving member 16 is a motor. Optionally, the motor includes but is not limited to a brushed DC motor, a brushless motor, a stepper motor, and a magnetic encoding motor, etc.

[0049] Please refer to Figure 3 , in some embodiments, the peristaltic pump 10 includes a roller 24, the planetary gear mechanism includes a planet carrier 26, the planet carrier 26 is provided with a mounting portion 28, the roller 24 is movably mounted on the mounting portion 28, the internal gear disk 22 is provided with a second positioning portion 30, and the mounting portion 28 is connected to the second positioning portion 30 so that the driving member 16 drives the planet carrier 26 and the roller 24 to move through the internal gear disk 22.

[0050] In this way, the mounting portion 28 of the planet carrier 26 is positioned and connected to the second positioning portion 30, which can enable the planet carrier 26 and the roller 24 to be quickly and conveniently connected to the internal gear disk 22.

[0051] Specifically, the planet carrier 26 is provided with a mounting portion 28, and the roller 24 is movably mounted on the mounting portion 28. The internal gear disk 22 is provided with a second positioning portion 30, and the mounting portion 28 is positioned and connected to the internal gear disk 22 through the second positioning portion 30. In this way, the installation of the roller 24, planet carrier 26, and internal gear disk 22 is facilitated.

[0052] Through the internal gear disk 22 for transmission between the planetary gear 20 and the roller 24, on the one hand, the internal gear covers the planetary gear 20, so that the planetary gear group composed of the sun gear 18, planetary gear 20, and internal gear disk 22 moves in a relatively enclosed space. In this way, it has a protective effect on the planetary gear group, preventing foreign objects from entering between the planetary gear groups and causing damage to the gears.

[0053] On the other hand, the sun gear 18, the planet gear 20, and the internal gear disk 22 all rotate. The internal gear disk 22 drives the planet carrier 26 and the roller 24 to rotate. In this way, the transmission between the planet gear 20 and the roller 24 is isolated by the internal gear disk 22. When changing the model of the roller 24 or changing the diameter of the roller 24, etc., only the position of the second positioning portion 30 on the internal gear disk 22 needs to be correspondingly adjusted to achieve the connection between the internal gear disk 22 and the planet carrier 26.

[0054] If the planet carrier 26 is directly connected to the planet gear 20, after changing the model of the roller 24 or changing the diameter of the roller 24, it is necessary to re - design and manufacture the planet gear 20 set, which greatly increases the design and manufacturing costs.

[0055] Please refer to Figure 2 and Figure 3 , in some embodiments, the first positioning portion 17 includes a positioning pin. The positioning pin protrudes from the base 12, and the planet gear 20 is rotatably sleeved on the positioning pin.

[0056] In this way, it is convenient to install the planet gear 20.

[0057] Specifically, the positioning pin can provide accurate positioning points and reliable fixing functions, ensuring that the planet gear 20 can be installed on the base 12 according to the design requirements and meshed with the sun gear 18.

[0058] In the embodiment as shown in Figure 3 , an installation hole is opened at the center of the planet gear 20. The positioning pin is inserted into the installation hole to position and fix the position of the planet gear 20. At the same time, the planet gear 20 rotates relative to the positioning pin and realizes transmission after meshing with the sun gear 18.

[0059] The positioning pin accurately positions the planet gear 20, which can simplify the assembly process and improve the assembly efficiency. At the same time, in the production process of the peristaltic pump 10, the overall accuracy and consistency of the product can be significantly improved.

[0060] Optionally, 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, etc.

[0061] Please refer to Figure 3 , Figure 5 and Figure 6 , in some embodiments, the second positioning portion 30 includes a positioning groove. The positioning groove is opened on the side of the internal gear disk 22 facing the planet carrier 26. The installation portion 28 is inserted into the positioning groove to limit the installation portion 28 in the rotation direction of the internal gear disk 22.

[0062] In this way, the positioning groove can position and fix the installation portion 28, which is convenient for the installation of the planet carrier 26 and the internal gear disk 22.

[0063] Specifically, when installing the planet carrier 26 and the internal gear disk 22, first install the roller 24 onto the installation portion 28, and then insert the installation portion 28 into the positioning groove, and the installation of the planet carrier 26 and the internal gear disk 22 can be completed.

[0064] In the illustrated embodiment, the positioning groove is a long strip-shaped through groove that extends radially outward from the center of the internal gear disk 22, and the number of the positioning grooves corresponds to the number of the installation portions 28. When the installation portion 28 is installed in the positioning groove, the positioning groove limits the installation portion 28 in the rotational direction of the internal gear disk 22. In this way, the positioning groove can be applicable to rollers 24 and planet carriers 26 of different sizes.

[0065] After replacing the rollers 24 with different diameters and the corresponding-sized planet carriers 26, the installation portions 28 of the planet carrier 26 can be inserted into different positions in the positioning groove, and the assembly of the internal gear disk 22 with the rollers 24 and planet carriers 26 of different sizes can be achieved. In this way, the internal gear disk 22 can be adapted to the peristaltic pump 10 with different flow rate requirements.

[0066] Optionally, the positioning groove can be a closed circular groove, and its size corresponds to the size of the installation portion 28, that is, when the installation portion 28 is inserted into the positioning groove, the positioning groove can limit the installation portion 28 in the rotational direction of the internal gear disk 22.

[0067] Further, a plurality of closed circular grooves are arranged on the internal gear disk 22 and extend radially outward from the center of the internal gear disk 22, so that the positioning groove can be applicable to rollers 24 and planet carriers 26 of different sizes.

[0068] Optionally, the positioning groove can be a keyway, and the shape of the bottom of the installation portion 28 matches the keyway, so that the positioning groove can limit the installation portion 28 in the rotational direction of the internal gear disk 22.

[0069] It should be noted that the positioning groove is not limited to the long strip-shaped through groove, the closed circular groove, and the keyway, and may also include other forms of positioning grooves that can achieve limiting the installation portion 28 in the rotational direction of the internal gear disk 22.

[0070] Please refer to Figure 2 and Figure 3 , in some embodiments, the base 12 is fixedly connected to the driving member 16, the base 12 is provided with a first through hole 32, and the sun gear 18 passes through the first through hole 32 and meshes with the planet gear 20.

[0071] In this way, after the base 12 is fixedly connected to the driving member 16, the sun gear 18 passing through the first through hole 32 can mesh with the planet gear 20 installed in the base 12 for transmission.

[0072] Specifically, the sun gear 18 is fixedly connected to the output shaft of the driving member 16, the base 12 is fixedly connected to the driving member 16, and the sun gear 18 passes through the first through hole 32 and meshes with the planet gear 20 installed in the base 12. After the base 12 is fixedly connected to the driving member 16 and the internal gear covers the outer ring of the planet gear 20, the sun gear 18 and the planet gear 20 are located between the base 12 and the internal gear, which can prevent foreign objects from falling in and damaging the gears.

[0073] Please refer to Figure 3 、 Figure 6 and Figure 7 , in some embodiments, the peristaltic pump 10 includes 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.

[0074] 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.

[0075] 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, thus forming a closed space. When the squeezing roller moves away, the hose 34 will return to its original state, which will create a negative pressure in the hose 34, thereby helping to suck in the liquid and realize the function of pumping the liquid.

[0076] 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. In this way, the roller 24 can squeeze the hose 34 under the drive of the planet carrier 26, and at the same time the top cover 36 fixes the position of the hose 34 to ensure stable contact between the roller 24 and the hose 34, so that the peristaltic pump 10 can stably output liquid.

[0077] Please refer to Figure 1 and Figure 3 , in some embodiments, one of a slot 38 and a buckle 40 is provided on the periphery of the top cover 36, and the other of the slot 38 and the buckle 40 is provided on the periphery of the base 12, and the buckle 40 is clamped in the slot 38.

[0078] In this way, the base 12 and the top cover 36 of the peristaltic pump 10 are connected through the slot 38 and the buckle 40, making the installation of the base 12 and the top cover 36 simple and reliable, and at the same time facilitating disassembly and maintenance.

[0079] Specifically, the base 12 includes one of the slot 38 and the buckle 40, and the top cover 36 includes the other of the slot 38 and the buckle 40. When the top cover 36 of the peristaltic pump 10 is installed on the base 12, the buckle 40 is clamped in the slot 38 to realize the connection between the base 12 and the top cover 36.

[0080] The combination of the card slot 38 and the buckle 40 has high stability, which can ensure that the connected base 12 and the top cover 36 will not loosen or fall off during normal use. At the same time, the connection of the card slot 38 and the buckle 40 usually does not require additional fixing materials, so the production cost and material consumption of the peristaltic pump 10 can be reduced. In addition, due to the simplicity of installation and disassembly, the maintenance and replacement costs can also be reduced.

[0081] Please refer to Figure 3 , in some embodiments, the peristaltic pump 10 includes 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.

[0082] In this way, the first valve nozzle 42 and the second valve nozzle 44 can be connected in the liquid pipeline to control the flow direction, speed or flow rate of the liquid in the hose 34, and the liquid is transported through the action of the peristaltic pump 10.

[0083] Specifically, the first valve nozzle 42 and the second valve nozzle 44 are arranged at both ends of the hose 34. 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.

[0084] Optionally, the first valve nozzle 42 is an inlet valve nozzle, and the second valve nozzle 44 is an outlet valve nozzle. Alternatively, both the first valve nozzle 42 and the second valve nozzle 44 can inlet and outlet liquid, that is, the liquid can flow reversely in the hose 34.

[0085] Please refer to Figure 6 and Figure 7 , in some embodiments, the top cover 36 is provided with a third positioning portion 46, and the planet carrier 26 is provided with a second through hole 48. The second through hole 48 passes through the third positioning portion 46 so that the planet carrier 26 is rotatably mounted on the top cover 36.

[0086] In this way, the top cover 36 fixes the planet carrier 26 to ensure the stable movement of the planet carrier 26.

[0087] Specifically, the second through hole 48 on the planet carrier 26 is sleeved on the third positioning portion 46. At the same time, the mounting portion 28 of the planet carrier 26 is inserted into the positioning groove of the internal gear disk 22. Driven by the internal gear disk 22, the planet carrier 26 and the internal gear disk 22 rotate together. In this way, the planet carrier 26 rotates between the top cover 36 and the internal gear disk 22, which can fix the planet carrier 26 and ensure the stable movement of the planet carrier 26 between the top cover 36 and the internal gear disk 22.

[0088] Please refer to Figure 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 includes a fastening member (not shown in the figure). The fastening member passes through the third through hole 50 and the fourth through hole 52 to fixedly connect the base 12 and the driving member 16.

[0089] In this way, using the fastening member to fix the base 12 and the driving member 16 can make the connection between the base 12 and the driving member 16 firm and reliable.

[0090] 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 a fastening member, which can ensure the precise alignment between the connected components. At the same time, the fastening member connection can provide a stable fastening force to ensure the durability and reliability of the connection, and can maintain the stability of the connection even under vibration or impact.

[0091] In one embodiment, the fastening member is a screw.

[0092] In summary, the sun gear 18 is mounted on the output shaft of the driving member 16, the base 12 and the driving member 16 are fixedly connected by a fastening member, the planet gears 20 are loosely fitted on the first positioning portion 17 of the base 12, and the internal gear disk 22 is placed on top of the planet gears 20; the middle hole of the planet carrier 26 is loosely fitted through the second positioning portion 30 of the top cover 36, the rollers 24 are sleeved on the mounting portion 28 of the planet carrier 26, and the mounting portion 28 is stuck in the first positioning portion 17 on the end face of the internal gear disk 22; the hose 34 is placed between the rollers 24 and the inner wall of the top cover 36, and the two ends of the hose 34 are provided with a first valve nozzle 42 and a second valve nozzle 44.

[0093] When the peristaltic pump 10 works, if the motor drives the sun gear 18 to rotate clockwise, the planet gears 20 rotate counterclockwise on the first positioning portion 17. The planet gears 20 drive the internal gear disk 22 to rotate counterclockwise, and the internal gear disk 22 then drives the planet carrier 26 and the rollers 24 thereon to rotate synchronously. The rollers 24 squeeze the hose 34 to realize the liquid path operation.

[0094] Through the first positioning portion 17 of the base 12, the positioning problem of the planet gears 20 is solved. And because the sun gear 18 and the planet gears 20 are meshed in advance, when installing the internal gear disk 22, it only needs to rotate a very small angle to be surely meshed with the three planet gears 20 at the same time, greatly improving the installation efficiency.

[0095] Through the design of the second positioning portion 30 on the internal gear disk 22, the internal gear disk 22 can be adapted to the rollers 24 with any center distance, independent of the planetary transmission, and the flow rate adjustment is not limited by the tooth ratio.

[0096] And since the planet carrier 26 is made of powder metallurgy die, and the planet gear 20 is made of injection mold, remanufacturing the planet carrier 26 for the rollers 24 with different center distances greatly reduces the adjustment cost compared with redesigning and manufacturing the planet gear 20.

[0097] A cleaning device according to an embodiment of the present utility model includes the peristaltic pump 10 of any one of the above embodiments.

[0098] In the above cleaning device, the planet gear 20 is rotatably sleeved on the first positioning portion 17, which is convenient for positioning the planet gear 20. The internal gear disk 22 is provided with a second positioning portion 30, and the planet carrier 26 is positioned and connected with the second positioning portion 30, which is convenient for positioning the planet carrier 26 and the internal gear disk 22. The installation of the planetary gear mechanism and the rollers 24 can be simply completed without auxiliary tooling, and the assembly efficiency can be improved.

[0099] Specifically, the cleaning device includes, but is not limited to, a floor washer, a vacuum cleaner, a sweeping robot or other devices with cleaning functions.

[0100] In one embodiment, the cleaning device includes a floor washer. The peristaltic pump 10 is installed on the body of the floor washer, and the first valve nozzle 42 and the second valve nozzle 44 are connected to the liquid pipeline of the floor washer, which can supply water for the floor washer to clean the working surface or the mop.

[0101] It should be noted that the above explanations of the embodiments and beneficial effects of the peristaltic pump 10 also apply to the cleaning device according to the embodiments of the present utility model. To avoid redundancy, no detailed elaboration is made here.

[0102] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples" 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 utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0103] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present utility model.

Claims

1. A peristaltic pump, characterized in that: It includes a base, a planetary gear mechanism and a driving member, wherein the planetary gear mechanism includes a sun gear, planetary gears and an inner gear disc; The output shaft of the driving member is fixedly connected to the sun gear; The base is fixedly connected to the driving member, and the base is provided with a first positioning portion. The planetary gear is rotatably sleeved on the first positioning portion and meshed with the sun gear. The inner gear disc covers the planetary gear and meshes with the planetary gear.

2. The peristaltic pump according to claim 1, characterized in that: The peristaltic pump includes a roller, the planetary gear mechanism includes a planet carrier, the planet carrier is provided with a mounting portion, the roller is movably mounted on the mounting portion, the inner gear disk is provided with a second positioning portion, and the mounting portion is connected to the second positioning portion so that the driving member drives the planet carrier and the roller to move through the inner gear disk.

3. The peristaltic pump according to claim 1, characterized in that: The first positioning portion comprises a positioning pin, the positioning pin is protruding from the base, and the planetary gear is rotatably sleeved on the positioning pin.

4. The peristaltic pump according to claim 2, characterized in that: The second positioning portion includes a positioning groove, which is arranged on a side of the inner gear disk facing the planet carrier, and the mounting portion is inserted into the positioning groove so that the positioning groove limits the mounting portion in the rotation direction of the inner gear disk.

5. The peristaltic pump according to claim 1, characterized in that: 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 and meshes with the planetary gears.

6. The peristaltic pump according to claim 2, characterized in that: The peristaltic pump comprises a hose and a top cover, wherein the top cover is buckled on the base, and the hose is arranged between the top cover and the roller.

7. The peristaltic pump according to claim 6, characterized in that: The periphery of the top cover is provided with one of a slot and a buckle, the periphery of the base is provided with the other of the slot and the buckle, and the buckle is locked in the slot.

8. The peristaltic pump according to claim 6, characterized in that: 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.

9. The peristaltic pump according to claim 6, characterized in that: The top cover is provided with a third positioning portion, the planet carrier is provided with a second through hole, and the second through hole is penetrated by the third positioning portion, so that the planet carrier can be rotatably mounted on the top cover.

10. The peristaltic pump according to claim 1, characterized in that 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, and the fastener passes through the third through hole and the fourth through hole to fix the base and the driving member.

11. A cleaning device, characterized in that: A peristaltic pump comprising any one of claims 1 to 10.

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