Peristaltic pump and cleaning equipment

Abstract

The utility model discloses a peristaltic pump and cleaning equipment, and belongs to the technical field of fluid conveying. The cleaning equipment comprises a peristaltic pump, the peristaltic pump comprises a pump shell, an extrusion part, a first mounting part and an elastic hose, the extrusion part is arranged on the first mounting part, the extrusion part and the first mounting part are rotatably arranged in an inner cavity of the pump shell, at least part of the elastic hose is arranged in the inner cavity of the pump shell and bypasses the extrusion part, and the elastic hose is arranged in the pump shell. The extrusion part can extrude the elastic hose; the stepping motor is arranged outside the pump shell, a rotor of the stepping motor, the gear mechanism and the first installation part are sequentially in transmission connection so as to drive the first installation part to rotate, and the rotating axis of the first installation part is parallel to the axis of the extrusion part. The speed adjusting range of the extrusion part of the peristaltic pump is wide, so that the speed adjusting range of the peristaltic pump is wide.

Description

Technical Field

[0001] This application belongs to the field of fluid transport technology, specifically relating to a peristaltic pump and cleaning equipment. Background Technology

[0002] A peristaltic pump is a device that pumps fluid by alternately squeezing and releasing a flexible hose through a squeezing element. It has advantages such as good sealing and easy maintenance, and therefore has been widely used in chemical, food, pharmaceutical and water treatment fields.

[0003] However, traditional peristaltic pumps typically use a DC motor, such as a brushed motor, as the rotary drive. In actual use, the DC motor drives the extruder to rotate around an axis parallel to the extruder's own axis to alternately squeeze and release the elastic hose. In this design, the DC motor's output torque is positively correlated with its input voltage. Therefore, the DC motor's input voltage must ensure that the output torque can drive the extruder to rotate. This places strict requirements on the DC motor's input voltage, thus limiting its capacity. Since the peristaltic pump's speed, i.e., the fluid delivery speed, mainly depends on the extruder's rotational speed, which is also positively correlated with the DC motor's input voltage, the limited input voltage of the DC motor also limits the extruder's rotational speed, resulting in a narrow speed range for the peristaltic pump. Utility Model Content

[0004] The purpose of this application is to provide a peristaltic pump and cleaning equipment that can solve the problem of the narrow speed range of peristaltic pumps in related technologies.

[0005] In a first aspect, embodiments of this application provide a peristaltic pump, including: a pump housing, a compression member, a first mounting member, and an elastic hose. The compression member is disposed on the first mounting member, and both the compression member and the first mounting member are rotatably disposed in the inner cavity of the pump housing. At least a portion of the elastic hose is disposed in the inner cavity of the pump housing and passes around the compression member, and the compression member can compress the elastic hose.

[0006] A stepper motor and a gear mechanism are provided. The stepper motor is located outside the pump housing. The rotor of the stepper motor, the gear mechanism, and the first mounting component are sequentially connected to drive the first mounting component to rotate. The rotation axis of the first mounting component is parallel to the axis of the extruder.

[0007] Secondly, embodiments of this application provide a cleaning device that includes the peristaltic pump described above.

[0008] In this embodiment, the peristaltic pump includes a stepper motor. The rotor, gear mechanism, and first mounting component of the stepper motor are sequentially connected to drive the first mounting component to rotate. A squeezing component is mounted on the first mounting component and can rotate synchronously with it, allowing the squeezing component to alternately squeeze and release the elastic hose. As can be seen, in this embodiment, the peristaltic pump uses a stepper motor as the rotational drive. The output speed of the stepper motor is not correlated with the input voltage, allowing the stepper motor speed to be adjusted arbitrarily according to actual needs. This results in a wide speed adjustment range for the squeezing component, and consequently, a wide speed range for the peristaltic pump. Attached Figure Description

[0009] Figure 1 This is an exploded schematic diagram of the peristaltic pump disclosed in an embodiment of this application;

[0010] Figure 2 This is a cross-sectional view of the peristaltic pump disclosed in an embodiment of this application;

[0011] Figure 3 This is a perspective view of the peristaltic pump disclosed in the embodiments of this application;

[0012] Figure 4 This is a schematic diagram of the internal structure of the peristaltic pump disclosed in the embodiments of this application;

[0013] Figure 5 This is a partial structural schematic diagram of the outer casing disclosed in an embodiment of this application;

[0014] Figure 6 This is a schematic diagram of the structure of the shielding part disclosed in the embodiments of this application;

[0015] Figure 7 This is a schematic diagram of the structure of the first sub-shell disclosed in an embodiment of this application;

[0016] Figure 8 This is a schematic diagram of the structure of the second sub-shell disclosed in an embodiment of this application;

[0017] Figure 9 This is a schematic diagram of the peristaltic pump disclosed in the embodiments of this application from a first-view perspective;

[0018] Figure 10 This is a schematic diagram of the peristaltic pump disclosed in the embodiments of this application from a second perspective;

[0019] Figure 11 This is a schematic diagram of the peristaltic pump disclosed in the embodiments of this application from a third-person perspective;

[0020] Figure 12 This is a schematic diagram of the gear mechanism disclosed in an embodiment of this application from one viewpoint;

[0021] Figure 13This is a schematic diagram of the gear mechanism disclosed in the embodiments of this application from another perspective.

[0022] Explanation of reference numerals in the attached figures:

[0023] 100-Pump housing, 110-First sub-housing housing, 111-First mounting groove, 112-Second mounting groove, 120-Second sub-housing housing, 121-Positioning groove, 122-First limiting part;

[0024] 210 - Extruded part, 220 - Roller;

[0025] 310 - First mounting component, 320 - Second mounting component;

[0026] 410-Elastocular flexible hose, 420-First delivery pipe, 421-First pipe section, 422-Third pipe section, 430-Second delivery pipe, 431-Second pipe section, 432-Fourth pipe section, 450-First mating part, 460-Second mating part;

[0027] 500-Stepper motor, 510-Rotor, 520-Housing, 521-Shielding part, 5211-First protrusion, 5212-Second protrusion, 522-Main body, 523-Cable outlet box, 530-Stator;

[0028] 600 - Gear mechanism, 610 - Input shaft, 620 - Output shaft, 630 - Gear assembly, 631 - Intermediate shaft, 632 - First gear, 633 - Second gear, 640 - Input gear, 650 - Output gear;

[0029] 710 - First screw, 720 - Second screw. Detailed Implementation

[0030] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0031] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0032] The peristaltic pump and cleaning equipment provided in this application will be described in detail below with reference to the accompanying drawings, through specific embodiments and application scenarios.

[0033] Please refer to Figures 1 to 13 As shown in the embodiment of this application, a peristaltic pump is provided, including: a pump housing 100, a compression member 210, a first mounting member 310, an elastic hose 410, a stepper motor 500, and a gear mechanism 600.

[0034] Specifically, the extruder 210 is disposed on the first mounting member 310, and both the extruder 210 and the first mounting member 310 are rotatably disposed in the inner cavity of the pump housing 100. At least a portion of the elastic hose 410 is disposed in the inner cavity of the pump housing 100 and passes around the extruder 210, and the extruder 210 can compress the elastic hose 410.

[0035] A stepper motor 500 is located outside the pump housing 100. The rotor 510 of the stepper motor 500, the gear mechanism 600, and the first mounting member 310 are sequentially connected to drive the first mounting member 310 to rotate. Compared with the stepper motor 500 being directly connected to the first mounting member 310, the presence of the gear mechanism 600 increases the torque transmitted to the first mounting member 310, thereby enabling the first mounting member 310 to generate a greater driving force. The rotation axis of the first mounting member 310 is parallel to the axis of the extruder 210; in other words, the first mounting member 310 and the extruder 210 are eccentrically positioned.

[0036] In this embodiment, the peristaltic pump includes a stepper motor 500. The rotor 510, gear mechanism 600, and first mounting member 310 of the stepper motor 500 are sequentially connected to drive the first mounting member 310 to rotate. The extrusion member 210 is disposed on the first mounting member 310 and can rotate synchronously with the first mounting member 310, thereby allowing the extrusion member 210 to alternately extrude and release the elastic hose 410. As can be seen, in this embodiment, the peristaltic pump uses a stepper motor 500 as the rotational drive. There is no correlation between the output speed of the stepper motor 500 and the input voltage, so the speed of the stepper motor 500 can be arbitrarily adjusted according to actual needs. This results in a wide speed adjustment range for the extrusion member 210, and consequently, a wide speed range for the peristaltic pump.

[0037] It should be noted that the stepper motor 500 adjusts its output speed by adjusting the pulse. Compared with the DC motor, it can drive the extruder 210 to rotate at a lower speed, thereby meeting the lower flow requirements of the peristaltic pump. Moreover, by using the stepper motor 500 to drive the extruder 210 to rotate, the problem of insufficient driving force to drive the extruder 210 to rotate, which exists with the DC motor, is less likely to occur.

[0038] In practical use, the extruder 210 alternately extrudes and releases the elastic hose 410, creating a negative pressure inside the hose. This draws fluid into the hose, and as the extruder 210 rotates, it drives the fluid along the length of the hose, thus delivering the fluid out. It should be noted that the fluid can be, for example, a liquid, gas, or a gas-liquid mixture. Furthermore, the stepper motor 500 is a motor that converts electrical pulse signals into corresponding angular or linear displacement. In practical use, the stepper motor 500 can be controlled to operate the peristaltic pump at a fixed step angle.

[0039] In another embodiment, reference Figure 2 As shown, the housing 520 of the stepper motor 500 is connected to the pump housing 100, and the gear mechanism 600 is located inside the housing 520. This arrangement, by concealing the gear mechanism 600 within the housing 520, reduces the external impact on the gear mechanism 600 and lowers the probability of it coming into contact with external impurities. This not only extends the service life of the gear mechanism 600 but also reduces the probability of it becoming clogged.

[0040] In other alternative embodiments, the gear mechanism 600 may also be located outside the housing 520. In this case, the gear mechanism 600 is located, for example, between the stepper motor 500 and the housing 520.

[0041] In another embodiment, reference Figure 1 , Figure 12 as well as Figure 13 As shown, the gear mechanism 600 includes an input shaft 610, an output shaft 620, and at least two gear assemblies 630. The input shaft 610 is driven by the rotor 510, and the output shaft 620 extends into the inner cavity of the pump housing 100 and is driven by the first mounting member 310. The gear assemblies 630 are arranged sequentially along the circumference of the input shaft 610, and the input shaft 610 is driven by the output shaft 620 through each gear assembly 630 in sequence.

[0042] In this embodiment, each gear assembly 630 is arranged sequentially along the circumference of the input shaft 610. This makes full use of the space in the circumference of the output shaft 620, which helps to reduce the size of the peristaltic pump and makes the peristaltic pump more compact overall.

[0043] Optionally, the gear assembly 630 includes, for example, an intermediate shaft 631, a first gear 632, and a second gear 633. The intermediate shaft 631 is rotatably connected to the housing 520. The first gear 632 and the second gear 633 are both sleeved on the intermediate shaft 631 and arranged sequentially along the axial direction of the intermediate shaft 631. The first gear 632 and the second gear 633 are both drive-connected to the intermediate shaft 631. The first gear 632 and the second gear 633 have different numbers of teeth. The first gear 632 is drive-connected to the input shaft 610, for example, and the second gear 633 is drive-connected to the output shaft 620, for example. The second gear 633 of one of two adjacent gear assemblies 630 is drive-connected to the first gear 632 of the other to realize the drive connection between the two adjacent gear assemblies 630. The number of teeth of the first gear 632 of the two adjacent gear assemblies 630 is different, for example, and the number of teeth of the second gear 633 of the two adjacent gear assemblies 630 is also different, for example.

[0044] In addition, the first gear 632 and the second gear 633 are integrally formed on the intermediate shaft 631, for example, to realize the transmission connection between the first gear 632 and the second gear 633 and the intermediate shaft 631. Of course, the first gear 632, the second gear 633 and the intermediate shaft 631 can also be a separate structure. In this case, the first gear 632 and the second gear 633 are both connected to the intermediate shaft 631 through a transmission key.

[0045] Optionally, the input shaft 610 may be integrally formed with the rotor 510 to achieve a transmission connection between the two. The input shaft 610 may also be equipped with an input gear 640, which is then connected to the gear assembly 630 to achieve a transmission connection between the input shaft 610 and the gear assembly 630. More specifically, the input gear 640 may mesh with a first gear 632 to achieve a transmission connection between the input gear 640 and the gear assembly 630.

[0046] In other alternative embodiments, the gear assemblies 630 may also be arranged collinearly, in which case the gear assemblies 630 may be located on the same side of the input shaft 610, for example.

[0047] In another embodiment, reference Figure 2 , Figure 5 as well as Figure 6 As shown, the housing 520 has an opening that allows the gear mechanism 600 to enter and exit the inner cavity of the housing 520. The opening is positioned facing the pump housing 100, and the housing 520 has a blocking part 521 for blocking the opening. The blocking part 521 is detachably connected to the pump housing 100, and the gear mechanism 600 is connected to the blocking part 521.

[0048] In actual installation, the gear mechanism 600 is first installed on the blocking part 521. Then, the blocking part 521 and the gear mechanism 600 are moved together. Next, with the gear mechanism 600 placed inside the cavity of the housing 520 and the blocking part 521 blocking the opening, the blocking part 521 is connected to the other parts of the housing 520, thus realizing the installation of the gear mechanism 600. It can be seen that in this embodiment, there is a large operating space when connecting the gear mechanism 600 to the blocking part 521, making the installation of the gear mechanism 600 relatively convenient.

[0049] Alternatively, in other embodiments, the shielding part 521 is connected to other parts of the housing 520 by non-removable means such as welding, gluing, or riveting, so that the connection between the shielding part 521 and other parts of the housing 520 is more reliable, thereby better protecting components such as the stator 530, rotor 510, and gear mechanism 600 located in the inner cavity of the housing 520, and the shielding part 521 is detachably connected to the pump housing 100, for example by means of bolts or screws.

[0050] Optionally, refer to Figure 6 As shown, the two ends of the shielding portion 521 are respectively provided with a first protrusion 5211 and a second protrusion 5212. The shielding portion 521 is connected to the main body portion 522 of the outer casing 520, for example. The main body portion 522 is provided with a cable outlet box 523. The inner cavity of the outer casing 520 is formed on the main body portion 522 of the outer casing 520. The main body portion 522 and the first protrusion 5211 and the second protrusion 5212 are, for example, offset from each other in the axial direction of the main body portion 522. The first protrusion 5211 and the second protrusion 5212 are both detachably connected to the pump housing 100. The configuration of the first protrusion 5211 and the second protrusion 5212 provides a connection basis for the connection between the outer casing 520 and the pump housing 100, thereby making the connection between the outer casing 520 and the pump housing 100 more convenient and reliable.

[0051] In one specific implementation, when the gear mechanism 600 includes the input shaft 610, output shaft 620 and intermediate shaft 631 mentioned above, the input shaft 610, output shaft 620 and intermediate shaft 631 are all rotatably connected to the blocking part 521, for example. The presence of the blocking part 521 makes the operation of the gear mechanism 600 more stable and reliable.

[0052] In other alternative embodiments, the gear mechanism 600 may also be connected to other parts of the housing 520 except for the shielding part 521, such as the main body part 522 mentioned above. In this case, the gear mechanism 600 needs to be placed in the inner cavity of the housing 520 first, and then the gear mechanism 600 is connected to other parts of the housing 520.

[0053] In another embodiment, reference Figure 12 and Figure 13As shown, the gear mechanism 600 includes an output shaft 620 and an output gear 650. The output shaft 620 is connected to the first mounting member 310, and the output gear 650 is sleeved on the output shaft 620, with an interference fit or a transition fit. The output gear 650 is also connected to the rotor 510, so that when the output shaft 620 and the elastic hose 410 are relatively stationary, the rotor 510 can drive the output gear 650 to rotate relative to the output shaft 620. It should be noted that when the output shaft 620 and the elastic hose 410 are relatively stationary, the elastic hose 410 may become entangled with the pressing member 210, causing the pressing member 210 to jam.

[0054] In this embodiment, when the output shaft 620 and the flexible hose 410 are relatively stationary, the rotor 510 can drive the output gear 650 to rotate relative to the output shaft 620. Thus, even if the extruder 210 is jammed, the rotor 510 can still rotate normally, thereby preventing the stepper motor 500 from being damaged due to excessive load. This also prevents the gear mechanism 600 from being subjected to excessive force, thereby extending the service life of the gear mechanism 600.

[0055] In practical use, the magnitude of the engagement force between the output shaft 620 and the output gear 650 is controlled by controlling the engagement precision between the output shaft 620 and the output gear 650. In actual operation, when the force between the output shaft 620 and the output gear 650 is less than or equal to the preset engagement force, the output gear 650 and the output shaft 620 rotate synchronously. When the force between the output shaft 620 and the output gear 650 is greater than the preset engagement force, the output gear 650 and the output shaft 620 rotate relative to each other.

[0056] Optionally, the output gear 650 may be driven to the gear assembly 630 described above to achieve a drive connection between the output shaft 620 and the gear assembly 630.

[0057] In other alternative embodiments, the output gear 650 and the output shaft 620 may also be connected together by means of non-rotational methods such as welding, gluing, or integral molding.

[0058] In one alternative embodiment, the output shaft 620 is detachably connected to the first mounting member 310, for example, to facilitate replacement of the output shaft 620 and the first mounting member 310. Specifically, the output shaft 620 and the first mounting member 310 are connected, for example, by bolts or screws, and more specifically, for example, by... Figure 1 The first screw 710 is used for connection. Of course, in other alternative embodiments, the output shaft 620 and the first mounting member 310 can also be connected by non-removable methods such as welding or gluing.

[0059] In another embodiment, the extruder 210 is a rod-shaped structure, and a roller 220 is rotatably mounted on the extruder 210. The extruder 210 can compress the elastic hose 410 through the roller 220. With this configuration, while the roller 220 is compressing the elastic hose 410, the roller 220 can rotate relative to the extruder 210, thereby reducing the friction between the extruder 210 and the elastic hose 410, and thus extending the service life of the elastic hose 410.

[0060] In other alternative embodiments, the extruder 210 may not have the roller 220. In this case, the extruder 210 may directly extrude the flexible hose 410, for example.

[0061] In another embodiment, the number of extrusion members 210 is at least two, with the exact number depending on the actual situation. Each extrusion member 210 is disposed inside the elastic hose 410, and the extrusion members 210 are spaced apart circumferentially along the first mounting member 310. This arrangement allows each extrusion member 210 to compress the elastic hose 410, thereby improving fluid transport efficiency. Of course, in other optional embodiments, the number of extrusion members 210 may also be one.

[0062] In another embodiment, reference Figure 1 and Figure 4 As shown, the peristaltic pump also includes a second mounting member 320, which is rotatably connected to the pump housing 100. One end of the extrusion member 210 is connected to the second mounting member 320, and the other end is connected to the first mounting member 310. Optionally, the extrusion member 210 and the second mounting member 320 are, for example, an integral structure, and the first mounting member 310 is, for example, provided with a through hole. The end of the extrusion member 210 facing away from the second mounting member 320 passes through the through hole and is interference-fitted with the through hole to realize the connection between the extrusion member 210 and the first mounting member 310.

[0063] In this embodiment, the extrusion member 210 is connected to the second mounting member 320, and the second mounting member 320 is rotatably connected to the pump housing 100. In this way, the extrusion member 210 is indirectly rotatably connected to the pump housing 100, thereby making the operation of the extrusion member 210 more stable and reliable.

[0064] As one specific implementation method, refer to Figure 1 and Figure 4 As shown, the first mounting member 310 and the second mounting member 320 are, for example, mounting disks. Of course, in other embodiments, the first mounting member 310 and the second mounting member 320 may also be other shapes, and this application does not limit them.

[0065] In other alternative embodiments, the peristaltic pump may not include the second mounting member 320, in which case the extrusion member 210 is connected to the first mounting member 310, for example.

[0066] In another embodiment, reference Figure 7 and Figure 8 As shown, the pump housing 100 includes a first sub-housing 110 and a second sub-housing 120, which together form the inner cavity of the pump housing 100. The first sub-housing 110 and the second sub-housing 120 are detachably connected, and one of the first sub-housing 110 and the second sub-housing 120 is provided with a positioning groove 121, with a portion of the other extending into the positioning groove 121. The positioning groove 121 is arranged along the circumference of the first sub-housing 110 or the second sub-housing 120. With this arrangement, the positions of the first sub-housing 110 and the second sub-housing 120 can be determined relatively conveniently and quickly with the help of the positioning groove 121, thereby making the installation of the first sub-housing 110 and the second sub-housing 120 more convenient and faster. Furthermore, this configuration allows the first sub-housing 110 and the second sub-housing 120 to be disassembled as needed, thereby facilitating the assembly and disassembly of components inside the pump housing 100, such as the extrusion member 210, the flexible hose 410, and the first mounting member 310. Specifically, the first sub-housing 110 and the second sub-housing 120 can be disassembled, for example, by means of... Figure 1 The second screw 720 is detachably connected, the positioning groove 121 is provided, for example, in the second sub-housing 120, and the second sub-housing 120 is detachably connected, for example, to the stepper motor 500.

[0067] Of course, in other alternative embodiments, the positioning groove 121 may not be provided.

[0068] In another embodiment, reference Figure 1 and Figure 3 As shown, the two ends of the flexible hose 410 are respectively connected to a first delivery pipe 420 and a second delivery pipe 430. The first delivery pipe 420 includes a first pipe section 421, and the second delivery pipe 430 includes a second pipe section 431. Both the first pipe section 421 and the second pipe section 431 pass through the pump housing 100, and the first pipe section 421, the second pipe section 431 and the flexible hose 410 are coplanar. The first pipe section 421 and the pump housing 100 are mutually restrictive and fitted in the circumferential direction and the length direction of the first pipe section 421. The second pipe section 431 and the pump housing 100 are mutually restrictive and fitted in the circumferential direction and the length direction of the second pipe section 431.

[0069] In this embodiment, by engaging the first pipe segment 421 with the pump housing 100 at the upper limit of the circumferential direction of the first pipe segment 421, the rotation of the first delivery pipe 420 around the axis of the first pipe segment 421 can be restricted. By engaging the second pipe segment 431 with the pump housing 100 at the upper limit of the circumferential direction of the second pipe segment 431, the rotation of the second delivery pipe 430 around the axis of the second pipe segment 431 can be restricted. By engaging the first pipe segment 421 with the pump housing 100 at the upper limit of the length direction of the first pipe segment 421, the movement of the first delivery pipe 420 along the length direction of the first pipe segment 421 can be restricted. By engaging the second pipe segment 431 with the pump housing 100 at the upper limit of the length direction of the second pipe segment 431, the movement of the second delivery pipe 430 along the length direction of the second pipe segment 431 can be restricted. This improves the stability of the first delivery pipe 420 and the second delivery pipe 430, thereby ensuring the stability of the elastic hose 410 connected to the first delivery pipe 420 and the second delivery pipe 430.

[0070] Optionally, the first delivery pipe 420 may be used, for example, to allow fluid to enter the flexible hose 410, and the second delivery pipe 430 may be used, for example, to allow fluid to flow out of the flexible hose 410. The material of the first delivery pipe 420 may be the same as or different from that of the flexible hose 410, depending on the actual situation. Similarly, the material of the first delivery pipe 420 may be the same as or different from that of the flexible hose 410, also depending on the actual situation. Furthermore, the first delivery pipe 420 may only include the first pipe section 421, or it may include other pipe sections, for example, refer to... Figure 3 As shown, it may also include a third pipe segment 422 connected to the first pipe segment 421, the axis of the third pipe segment 422 intersecting the axis of the first pipe segment 421. The second conveying pipe 430 may include only the second pipe segment 431, or it may include other pipe segments, such as those shown in the reference diagram. Figure 3 As shown, it may also include a fourth pipe segment 432 connected to the second pipe segment 431, the axis of the fourth pipe segment 432 intersecting the axis of the second pipe segment 431.

[0071] As one specific implementation method, refer to Figure 1 and Figure 7As shown, when the pump housing 100 includes the first sub-housing 110 and the second sub-housing 120 mentioned above, the first sub-housing 110 is provided, for example, with a first mounting groove 111 and a second mounting groove 112. The second sub-housing 120 covers, for example, both the openings of the first mounting groove 111 and the openings of the second mounting groove 112. The first mounting groove 111 and the second sub-housing 120 together form a first mounting channel, and the second mounting groove 112 and the second sub-housing 120 together form a second mounting channel. A first pipe segment 421 passes through the first mounting channel, and a second pipe segment 431 passes through the second mounting channel. The first pipe segment 421 is provided with a first mating part 450 and a second mating part 460. The first mating part 450 is located in the first mounting channel and is in circumferential upper limit mating with the first mounting channel in the first pipe segment 421. The second mating part 460 is located in the second mounting channel and is in circumferential upper limit mating with the second mounting channel in the second pipe segment 431.

[0072] The second sub-housing 120 is provided with at least one of a first limiting part 122, a second limiting part, a third limiting part, and a fourth limiting part. The first limiting part 122 is located, for example, on the side of the first mating part 450 facing the inner cavity of the pump housing 100, and is in upper limiting engagement with the first mating part 450 in the length direction of the first pipe section 421. The second limiting part is located, for example, on the side of the first mating part 450 away from the inner cavity of the pump housing 100, and is in upper limiting engagement with the first mating part 450 in the length direction of the first pipe section 421. The third limiting part is located, for example, on the side of the second mating part 460 facing the inner cavity of the pump housing 100, and is in upper limiting engagement with the second mating part 460 in the length direction of the second pipe section 431. The fourth limiting part is located on the side of the second mating part 460 away from the inner cavity of the pump housing 100, and is in upper limiting engagement with the second mating part 460 in the length direction of the second pipe section 431.

[0073] In other optional embodiments, the first pipe segment 421 and the pump housing 100 may not have a limiting fit relationship in the circumferential direction and the length direction of the first pipe segment 421, and the second pipe segment 431 and the pump housing 100 may not have a limiting fit relationship in the circumferential direction and the length direction of the second pipe segment 431.

[0074] In another embodiment, the stepper motor 500 is a permanent magnet stepper motor. Compared to hybrid stepper motors, permanent magnet stepper motors are less expensive and lighter, and offer better controllability compared to inductive stepper motors. Furthermore, permanent magnet stepper motors offer higher precision, allowing for precise adjustment of the rotation angle through the number of steps, thus enabling high-precision control of fluid delivery speed. Moreover, the deviations of permanent magnet stepper motors do not accumulate, and they maintain high precision even in open-loop operation.

[0075] Of course, in other alternative embodiments, the stepper motor 500 may also be a hybrid stepper motor or an inductive stepper motor.

[0076] This application also provides a cleaning device, which includes the peristaltic pump described above, for example, for delivering cleaning fluid to the cleaning device.

[0077] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A peristaltic pump, characterized in that, include: The pump housing (100), the extruder (210), the first mounting member (310), and the flexible hose (410) are provided on the first mounting member (310), and both the extruder (210) and the first mounting member (310) are rotatably disposed in the inner cavity of the pump housing (100). At least a portion of the flexible hose (410) is disposed in the inner cavity of the pump housing (100) and passes around the extruder (210), and the extruder (210) can compress the flexible hose (410). A stepper motor (500) and a gear mechanism (600) are provided. The stepper motor (500) is located outside the pump housing (100). The rotor (510) of the stepper motor (500), the gear mechanism (600) and the first mounting member (310) are sequentially connected to drive the first mounting member (310) to rotate. The rotation axis of the first mounting member (310) is parallel to the axis of the extruder (210). The housing (520) of the stepper motor (500) is connected to the pump housing (100), and the gear mechanism (600) is located in the inner cavity of the housing (520).

2. The peristaltic pump according to claim 1, characterized in that, The gear mechanism (600) includes an input shaft (610), an output shaft (620), and at least two gear assemblies (630). The input shaft (610) is drivenly connected to the rotor (510). The output shaft (620) extends into the inner cavity of the pump housing (100) and is drivenly connected to the first mounting member (310). Each gear assembly (630) is arranged sequentially along the circumference of the input shaft (610), and the input shaft (610) is drivenly connected to the output shaft (620) sequentially through each gear assembly (630). And / or, the housing (520) is provided with an opening for the gear mechanism (600) to enter and exit the inner cavity of the housing (520), the opening is disposed facing the pump housing (100), and the housing (520) is provided with a shielding part (521) for shielding the opening, the shielding part (521) is detachably connected to the pump housing (100), and the gear mechanism (600) is connected to the shielding part (521).

3. The peristaltic pump according to claim 1, characterized in that, The gear mechanism (600) includes an output shaft (620) and an output gear (650). The output shaft (620) is connected to the first mounting member (310) in a driving connection. The output gear (650) is sleeved on the output shaft (620) and has a transition fit or interference fit with the output shaft (620). The output gear (650) is connected to the rotor (510) in a driving connection, so that when the output shaft (620) and the elastic hose (410) are relatively stationary, the rotor (510) can drive the output gear (650) to rotate relative to the output shaft (620).

4. The peristaltic pump according to claim 1, characterized in that, The extrusion member (210) has a rod-shaped structure, and a roller (220) is rotatably provided on the extrusion member (210). The extrusion member (210) can squeeze the elastic hose (410) through the roller (220). And / or, the number of the extrusion members (210) is at least two, each of the extrusion members (210) is disposed inside the elastic hose (410), and each of the extrusion members (210) is spaced apart circumferentially along the first mounting member (310).

5. The peristaltic pump according to claim 1, characterized in that, The peristaltic pump also includes a second mounting component (320), which is rotatably connected to the pump housing (100). One end of the extrusion component (210) is connected to the second mounting component (320), and the other end is connected to the first mounting component (310).

6. The peristaltic pump according to claim 1, characterized in that, The pump housing (100) includes a first sub-housing (110) and a second sub-housing (120). The first sub-housing (110) and the second sub-housing (120) together form the inner cavity of the pump housing (100). The first sub-housing (110) and the second sub-housing (120) are detachably connected. One of the first sub-housing (110) and the second sub-housing (120) is provided with a positioning groove (121), and a part of the other extends into the positioning groove (121). The positioning groove (121) is arranged along the circumference of the first sub-housing (110) or the second sub-housing (120).

7. The peristaltic pump according to claim 1, characterized in that, The two ends of the flexible hose (410) are respectively connected to a first delivery pipe (420) and a second delivery pipe (430). The first delivery pipe (420) includes a first pipe section (421), and the second delivery pipe (430) includes a second pipe section (431). The first pipe section (421) and the second pipe section (431) both pass through the pump housing (100), and the first pipe section (421), the second pipe section (431) and the flexible hose (410) are coplanar. The first pipe section (421) and the pump housing (100) are mutually restrictive in the circumferential direction and the length direction of the first pipe section (421). The second pipe section (431) and the pump housing (100) are mutually restrictive in the circumferential direction and the length direction of the second pipe section (431).

8. The peristaltic pump according to claim 1, characterized in that, The stepper motor (500) is a permanent magnet stepper motor.

9. A cleaning device, characterized in that, Including the peristaltic pump as described in any one of claims 1-8.

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