Oscillating pump, self-mixing foaming device and hand washing machine having the same

Abstract

The present application discloses an oscillating pump, a self-mixing foaming device and a hand-washing machine having the same, the oscillating pump comprising: a support, a crank rocker mechanism being provided on the top thereof; a rotating member being provided on the support and being located below the crank rocker mechanism, a receiving cavity being provided on the rotating member and passing through the rotating member in its radial direction; and a plunger being connected to the crank rocker mechanism and partially inserted into the receiving cavity, the plunger and the receiving cavity being provided in a one-to-one correspondence; wherein the bottom of the support is provided with a suction port and a discharge port; the crank rocker mechanism is constructed to drive the plunger to move up and down in the receiving cavity while driving the plunger to move forward and backward, so that the rotating member swings back and forth with the forward and backward movement of the plunger. In the above manner, the oscillating pump in the present application can realize self-mixing of water and liquid, can configure ordinary hand soap that has not been configured on the market, and has the advantages of being easy to use and having low cost.

Description

Technical Field

[0001] The present application relates to the technical field of hand-washing machines, and in particular to an oscillating pump, a self-mixing foaming device having the same, and a hand-washing machine. Background Art

[0002] Handwashing, a daily habit that helps people maintain cleanliness and hygiene, places demands not only on household appliances but also on public facilities. A wide variety of faucets are now available on the market, and with technological innovation, these faucets are constantly being updated and improved. Traditional handwashing devices use faucets. To wash hands, one must reach for hand soap on the wall and then dry hands at a nearby hand dryer, making the process of moving hands back and forth cumbersome. Furthermore, residual water drips onto countertops and floors during handwashing, making them damp and slippery, and requiring frequent cleaning by cleaners. Consequently, handwashing machines with fully automatic handwashing functions have emerged on the market. These machines offer the advantage of greater ease of use compared to traditional faucets. However, existing handwashing machines on the market can only use pre-configured hand soap specifically for handwashing; ordinary hand soap purchased directly from the market is not suitable for use with handwashing machines. This results in inconvenience and high costs. Therefore, it is necessary to develop an oscillating pump, a self-mixing foaming device with the same, and a handwashing machine. Summary of the Invention

[0003] In response to the shortcomings of the above-mentioned technologies, the present application provides an oscillating pump, a self-mixing foaming device and a hand washing machine having the same, which can achieve self-mixing of water and liquid, and can configure ordinary hand soaps that have not been configured on the market. It has the advantages of easy use and low cost.

[0004] In order to solve the above technical problems, the technical solution adopted in this application is:

[0005] A swing pump comprises: a support, a crank rocker mechanism is provided on the top of which; a rotating member is provided on the support and below the crank rocker mechanism, the rotating member is provided with a accommodating cavity which passes through it in a radial direction; and a plunger, which is connected to the crank rocker mechanism and partially inserted into the accommodating cavity, the plunger and the accommodating cavity being arranged in a one-to-one correspondence; wherein, a suction port and a discharge port are provided at the bottom of the support; the crank rocker mechanism is constructed to drive the plunger to move up and down in the accommodating cavity while driving the plunger to move forward and backward, so that the rotating member swings back and forth with the forward and backward movement of the plunger, thereby making the accommodating cavity connected with the suction port or the discharge port to inhale or discharge material.

[0006] In one embodiment of the present application, the rotating member includes a first cylinder and a second cylinder of different sizes, and the second cylinder is arranged along the axial direction of the first cylinder; the accommodating cavity includes a water cavity and a liquid cavity arranged side by side on the first cylinder, and an air cavity formed on the second cylinder.

[0007] In one embodiment of the present application, the plunger includes a water pump plunger that cooperates with the cavity wall of the water cavity, a liquid pump plunger that cooperates with the cavity wall of the liquid cavity, and an air pump plunger that cooperates with the cavity wall of the air cavity.

[0008] In one embodiment of the present application, the support includes a bracket and a seat body detachably arranged on the bracket, and the interior of the seat body is hollow to form a first cavity for accommodating the first cylinder and a second cavity for accommodating the second cylinder; wherein the cavity top of the first cavity is provided with a first avoidance opening for the water pump plunger and the liquid pump plunger to pass through and move, and the cavity top of the second cavity is provided with a second avoidance opening for the air pump plunger to pass through and move.

[0009] In one embodiment of the present application, the suction port includes a water inlet and a liquid inlet formed side by side at the bottom of the first cavity, and an air inlet formed at the bottom of the second cavity; the discharge port includes a water outlet and a liquid outlet formed side by side at the bottom of the first cavity, and an air outlet formed at the bottom of the second cavity.

[0010] In one embodiment of the present application, a bottom plate for supporting the base body is provided at the bottom of the bracket, and a frame is provided on the top of the bottom plate;

[0011] In one embodiment of the present application, a frame is provided between the bracket and the base, and the frame is located directly below the water inlet, the liquid inlet, the water outlet, and the liquid outlet.

[0012] In one embodiment of the present application, the frame is divided into a water inlet trough, a liquid inlet trough, a water outlet trough and a liquid outlet trough which are independent of each other and correspond to the water inlet, the liquid inlet, the water outlet and the liquid outlet respectively; or the frame is divided into a water inlet trough, a liquid inlet trough and a mixed liquid outlet trough which are independent of each other, the water inlet trough corresponds to the water inlet, the liquid inlet trough corresponds to the liquid inlet, and the mixed liquid outlet trough corresponds to the water outlet and the liquid outlet.

[0013] In one embodiment of the present application, the crank rocker mechanism includes a rotating shaft pivotally connected to the plunger, a power crank arranged at one end of the rotating shaft and pivotally connected to the support, a balance crank arranged at the other end of the rotating shaft and pivotally connected to the support, and a motor mounted on the support for driving the power crank to rotate, wherein the rotating shaft rotates in a circle driven by the power crank, thereby driving the plunger to move.

[0014] To solve the above technical problems, another solution proposed in this application is:

[0015] A self-mixing foaming device comprises a foaming unit and the aforementioned oscillating pump, wherein the foaming unit and the oscillating pump are arranged separately and are connected through a hose.

[0016] In order to solve the above technical problems, another solution proposed in this application is:

[0017] A hand washing machine comprises the above-mentioned oscillating pump.

[0018] Compared with the prior art, the present application has the following beneficial effects:

[0019] The oscillating pump, the self-mixing foaming device and the hand washing machine provided by the present application can realize self-mixing of water and liquid, can configure ordinary hand washing liquids that have not been configured on the market, and have the advantages of being easy to use and low in cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without inventive efforts. Among them:

[0021] Figure 1 It is a structural diagram of the swing pump proposed in this application;

[0022] Figure 2 yes Figure 1 Schematic diagram of the oscillating pump in the upper direction of the main view;

[0023] Figure 3 yes Figure 1 Schematic diagram of the exploded structure of the swing pump;

[0024] Figure 4 yes Figure 1 Schematic diagram of the cross-sectional structure of the swing pump;

[0025] Figure 5This is a structural diagram of a support for an oscillating pump proposed in this application in one embodiment;

[0026] Figure 6 yes Figure 5 Schematic diagram of the support in the upward direction;

[0027] Figure 7 1 is a schematic structural diagram of a support of an oscillating pump proposed in this application in another embodiment;

[0028] Figure 8 yes Figure 7 Schematic diagram of the support in the upward direction;

[0029] Figure 9 It is a structural schematic diagram of the seat body of the oscillating pump proposed in this application;

[0030] Figure 10 It is a schematic diagram of the swing pump proposed in the present application in the reclining position;

[0031] Figure 11 It is a schematic diagram of the swing pump proposed in the present application in a forward leaning position;

[0032] In the figure, 100-support; 110-bracket; 111-bottom plate; 112-opening; 113-water inlet; 114-liquid inlet; 115-water outlet; 116-liquid outlet; 117-frame; 1171-water inlet; 1172-liquid inlet; 1173-water outlet; 1174-liquid outlet; 1175-mixed liquid outlet; 118- Mixing liquid outlet; 120-base; 121-first avoidance port; 122-second avoidance port; 123-water inlet; 124-liquid inlet; 125-water outlet; 126-liquid outlet; 127-air inlet; 128-air outlet; 200-crank rocker mechanism; 210-rotating shaft; 220-power crank; 230-balance crank; 240-motor; 300-rotating part; 310-first cylinder; 311-water cavity; 312-liquid cavity; 320-second cylinder; 321-air cavity; 400-plunger; 410-water pump plunger; 420-liquid pump plunger; 430-air pump plunger; 500-foaming unit; 510-first foaming frame; 511-water connecting pipe; 512- Liquid connecting pipe; 513-gas connecting pipe; 520-secondary foaming frame; 530-coarse nylon mesh; 540-fine nylon mesh; 600-sealing ring; 700-sealing pad. DETAILED DESCRIPTION

[0033] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. It will be understood that the specific embodiments described herein are only used to explain the present application, rather than to limit the present application. It should also be noted that, for ease of description, only some, rather than all, structures related to the present application are shown in the accompanying drawings. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0034] As used herein, the terms "comprise," "comprising," and "having," and any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus comprising a series of steps or elements is not limited to the listed steps or elements but may optionally include steps or elements not listed, or may optionally include other steps or elements inherent to the process, method, product, or apparatus.

[0035] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0036] The hand sanitizers that can be used in existing hand sanitizers are only those that are specially formulated for hand sanitizers. Ordinary hand sanitizers purchased directly on the market are not suitable for hand sanitizers because they are too viscous to be suitable for hand sanitizers. This results in inconvenience and high cost.

[0037] Based on this, this application proposes a swing pump, please refer to Figures 1 to 4 , Figure 1 This is a schematic diagram of the structure of the swing pump proposed in this application. Figure 2 yes Figure 1 Schematic diagram of the oscillating pump in the main viewing direction, Figure 3 yes Figure 1 Schematic diagram of the exploded structure of the swing pump, Figure 4 yes Figure 1Schematic diagram of the cross-sectional structure of the swing pump in . In the present application, the swing pump includes: a support 100, a crank rocker mechanism 200 is provided on the top of which; a rotating member 300, which is provided on the support 100 and is located below the crank rocker mechanism 200, and the rotating member 300 is provided with a receiving cavity that passes through it in its radial direction; and a plunger 400, which is connected to the crank rocker mechanism 200 and partially inserted into the receiving cavity, and the plunger 400 is provided in a one-to-one correspondence with the receiving cavity; wherein, a suction port and a discharge port are provided at the bottom of the support 100; the crank rocker mechanism 200 is constructed to drive the plunger 400 to move up and down in the receiving cavity while driving the plunger 400 to move forward and backward, so that the rotating member 300 swings back and forth with the forward and backward movement of the plunger 400, thereby making the receiving cavity connected to the suction port or the discharge port to inhale or discharge materials. Specifically, Figure 10 It is a schematic diagram of the swing pump proposed in the present application in the reclining position; Figure 11 It is a schematic diagram of the swing pump proposed in this application in a forward leaning position.

[0038] Through the above-mentioned method, the oscillating pump of the present application can convert the relatively viscous common hand soap on the market into a hand soap suitable for hand washing, which has the advantages of simple structure and convenient use. Therefore, users can directly purchase common hand soap on the market as hand soap for hand washing, which can effectively reduce the cost of use and has the advantages of simple structure and high cost performance.

[0039] For further information, please refer to Figure 3 and Figure 4 The rotating member 300 includes a first cylindrical body 310 and a second cylindrical body 320 of different sizes. The second cylindrical body 320 is arranged along the axial direction of the first cylindrical body 310. The accommodating cavity extends radially through the first cylindrical body 310 and the second cylindrical body 320, respectively. Specifically, the accommodating cavity includes a water cavity 311 and a liquid cavity 312 arranged side by side on the first cylindrical body 310, and an air cavity 321 formed on the second cylindrical body 320. The water cavity 311 on the first cylindrical body 310 is used to accommodate clean water, the liquid cavity 312 on the first cylindrical body 310 is used to accommodate cleaning liquid, and the air cavity 321 on the second cylindrical body 320 is used to accommodate air. The cleaning liquid can be hand soap or other types of liquids with cleaning effects. The plunger 400 includes a water pump plunger 410 that cooperates with the cavity wall of the water cavity 311 , a liquid pump plunger 420 that cooperates with the cavity wall of the liquid cavity 312 , and an air pump plunger 430 that cooperates with the cavity wall of the air cavity 321 .

[0040] To ensure a favorable ratio of water, liquid, and gas to facilitate subsequent foaming, the diameter of the first cylindrical body 310 is smaller than that of the second cylindrical body 320, and the volume of the gas cavity 321 is larger than the volumes of the water cavity 311 and the liquid cavity 312. This ensures that the gas-to-liquid ratio of gas, water, and liquid discharged by the oscillating pump during each operating stroke is between 10:1 and 12:1. It should be understood that the gas in this gas-to-liquid ratio refers to air, and the liquid refers to a mixture of clean water and cleaning liquid.

[0041] For further information, please refer to Figure 2 The crank-rocker mechanism 200 includes a rotating shaft 210 pivotally connected to the plunger 400, a power crank 220 arranged at one end of the rotating shaft 210 and pivotally connected to the support 100, a balancing crank 230 arranged at the other end of the rotating shaft 210 and pivotally connected to the support 100, and a motor 240 installed on the support 100 for driving the power crank 220 to rotate, wherein the rotating shaft 210 rotates in a circle driven by the power crank 220, thereby driving the plunger 400 to move. The specific motion process of the crank-rocker mechanism 200 is as follows: the motor 240 drives the power crank 220 to rotate, which in turn drives the rotating shaft 210 to rotate. The water pump plunger 410, liquid pump plunger 420, and air pump plunger 430, mounted on the rotating shaft 210, respectively engage with the walls of the water chamber 311, liquid chamber 312, and air chamber 321 to draw in or pump out clean water, cleaning fluid, and air, respectively. One end of the rotating shaft 210 is connected to the motor 240 via the power crank 220, and the other end is connected to the balancing crank 230. The balancing crank 230 balances the forces on the rotating shaft 210 to prevent it from tilting. It is understood that the plungers 400 specifically refer to the water pump plunger 410, liquid pump plunger 420, and air pump plunger 430, and the accommodating chambers specifically refer to the water chamber 311, liquid chamber 312, and air chamber 321. In the present application, the mixing ratio of water, liquid and gas can be changed by changing the height of the power crank 220 or the height of the plunger 400 or the inner diameter of the accommodating chamber, thereby having the advantage of convenient adjustment.

[0042] Specifically, a bending portion is formed on the rotating shaft 210 so that the rotating shaft 210 forms a pair of linear rods that are parallel to each other and pivotally connected to the plunger 400, wherein the linear rods have a spacing in their radial direction to meet different stroke requirements of the plunger 400.

[0043] For further information, see Figure 9 , Figure 9This is a schematic diagram of the structure of the oscillating pump base proposed in this application. The base 100 comprises a bracket 110 and a base 120 detachably mounted on the bracket 110. The base 120 is hollowed out to form a first cavity for accommodating a first cylindrical body 310 and a second cavity for accommodating a second cylindrical body 320. Specifically, the top of the first cavity is provided with a first clearance opening 121 for the passage and movement of the water pump plunger 410 and the liquid pump plunger 420. The top of the second cavity is provided with a second clearance opening 122 for the passage and movement of the air pump plunger 430.

[0044] In order to improve the sealing performance between the rotating part 300 and the support 100, and the sealing performance between the plunger 400 and the accommodating cavity, a sealing ring 600 is arranged between the first cylinder 310 and the cavity wall of the first cavity, between the second cylinder 320 and the cavity wall of the second cavity, between the water pump plunger 410 and the cavity wall of the water cavity 311, between the liquid pump plunger 420 and the cavity wall of the liquid cavity 312, and between the air pump plunger 430 and the cavity wall of the air cavity 321.

[0045] Furthermore, the suction port includes a water inlet 123 and a liquid inlet 124 formed side by side at the bottom of the first cavity, and an air inlet formed at the bottom of the second cavity. The discharge port includes a water outlet 125 and a liquid outlet 126 formed side by side at the bottom of the first cavity, and an air outlet formed at the bottom of the second cavity. Among them, an air inlet 127 is provided at the air inlet, and an air outlet 128 is provided at the air outlet. The air inlet 127 and the air outlet 128 are both extended downward, and an opening 112 for the air inlet 127 and the air outlet 128 to pass through is provided on the bottom plate 111. The water inlet 123, the liquid inlet 124, the water outlet 125 and the liquid outlet 126 are located on the same plane.

[0046] Furthermore, a frame 117 is provided between the bracket 110 and the base 120. Specifically, a bottom plate 111 for supporting the base 120 is provided at the bottom of the bracket 110. The frame 117 is provided on top of the bottom plate 111. The frame 117 is located directly below the water inlet 123, the liquid inlet 124, the water outlet 125, and the liquid outlet 126. A sealing gasket 700 is provided between the frame 117 and the base 120 for sealing, thereby effectively improving the sealing performance. In one embodiment, please refer to Figure 5 and Figure 6 , Figure 5 This is a structural diagram of the support of the swing pump proposed in this application in one embodiment. Figure 6 yes Figure 5Schematic diagram of the support in the upward direction. The frame 117 is divided into a water inlet trough 1171, a liquid inlet trough 1172, a water outlet trough 1173 and a liquid outlet trough 1174 which are independent of each other and correspond to the water inlet 123, the liquid inlet 124, the water outlet 125 and the liquid outlet 126 respectively. The bottom of the bottom plate 111 is also provided with a water inlet pipe 113, a liquid inlet pipe 114, a water outlet pipe 115 and a liquid outlet pipe 116 which correspond to the water inlet trough 1171, the liquid inlet trough 1172, the water outlet trough 1173 and the liquid outlet trough 1174 respectively. The sealing gasket 700 is provided with holes which correspond to the water inlet trough 1171, the liquid inlet trough 1172, the water outlet trough 1173 and the liquid outlet trough 1174 respectively. In another embodiment, please refer to Figure 7 and Figure 8 , Figure 7 This is a structural diagram of another embodiment of the support of the oscillating pump proposed in this application. Figure 8 yes Figure 7 Schematic diagram of the support in the upward direction. In order to enable the oscillating pump to have the function of pre-mixing water and liquid, the frame 117 is divided into a water inlet trough 1171, a liquid inlet trough 1172, and a mixing liquid outlet trough 1175, which are independent of each other. The water inlet trough 1171 corresponds to the water inlet 123, the liquid inlet trough 1172 corresponds to the liquid inlet 124, and the mixing liquid outlet trough 1175 corresponds to the water outlet 125 and the liquid outlet 126. The bottom of the base plate 111 is also provided with a water inlet pipe 113, a liquid inlet pipe 114, and a mixing liquid outlet pipe 118 corresponding to the water inlet trough 1171, the liquid inlet trough 1172, and the mixing liquid outlet trough 1175, respectively. The sealing gasket 700 is provided with holes corresponding to the water inlet trough 1171, the liquid inlet trough 1172, and the mixing liquid outlet trough 1175.

[0047] The above description of the oscillating pump is sufficient, and those skilled in the art will understand the following operating process: during operation, the motor 240 rotates so that the power crank 220 drives the rotating shaft 210 to rotate. Due to the rotation of the rotating shaft 210, the water pump plunger 410, the liquid pump plunger 420 and the air pump plunger 430 on it cooperate with the water cavity 311, the liquid cavity 312 and the air cavity 321 respectively, thereby realizing the suction or discharge of clean water, cleaning liquid and gas.

[0048] When the rotating shaft 210 rotates to the top, the water pump plunger 410, the liquid pump plunger 420 and the air pump plunger 430 thereon rise to the top, and then the rotating shaft 210 continues to move in a circular motion. When the first cylinder 310 and the second cylinder 320 rotate to one side, the water pump plunger 410, the liquid pump plunger 420 and the air pump plunger 430 And the air pump plunger 430 moves downward to discharge the clean water, cleaning liquid and gas in the water chamber 311, the liquid chamber 312 and the air chamber 321; when the rotating shaft 210 rotates to the bottom, the water pump plunger 410, the liquid pump plunger 420 and the air pump plunger 430 thereon are located at the lowest point, and the discharge of clean water, cleaning liquid and gas is completed, and then the rotating shaft 210 continues to move in a circular motion. When the first cylinder 310 and the second cylinder 320 rotate to the other side, the water pump plunger 410, the liquid pump plunger 420 and the air pump plunger 430 move upward to suck the clean water, cleaning liquid and gas into the water chamber 311, the liquid chamber 312 and the air chamber 321. This is one movement cycle.

[0049] It can be understood that the oscillating pump in the present application can be applied to different usage scenarios, which are illustrated below with examples.

[0050] The oscillating pump described herein can be used in a self-mixing foaming device. The self-mixing foaming device comprises a foaming unit 500 and the oscillating pump. The foaming unit 500 and the oscillating pump are separate components and connected via a flexible hose (not shown). This allows for a compact footprint and easy installation.

[0051] For further information, see Figure 4 The foaming unit 500 includes a primary foaming frame 510 having a primary mixing chamber formed therein, and a secondary foaming frame 520 connected to the primary foaming frame 510 and having a secondary mixing chamber formed therein. A coarse nylon mesh 530 is detachably provided at the connection between the primary and secondary mixing chambers, and a fine nylon mesh 540 is detachably provided at the free end of the secondary mixing chamber. The primary foaming frame 510 is also provided with a water connection pipe 511, a liquid connection pipe 512, and a gas connection pipe 513, which are connected to the primary mixing chamber. The water connection pipe 511 is connected to the water outlet 115, the liquid connection pipe 512 is connected to the liquid outlet 116, and the gas connection pipe 513 is connected to the gas outlet 128. Thus, during each movement stroke of the oscillating pump, clean water, cleaning liquid, and gas in a preset ratio are pumped into the primary mixing chamber for self-mixing, and then foamed through the coarse nylon mesh 530 and the fine nylon mesh 540.

[0052] The oscillating pump in the present application is also used in a hand washing machine, which includes a hand washing machine housing, a hand soap delivery device, a cleaning assembly, a water outlet assembly, and a dryer, wherein the oscillating pump is disposed in the hand soap delivery device.

[0053] The above description is only an implementation method of the present application and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the description and drawings of this application, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A swing pump, characterized in that: include: A support (100) having a crank rocker mechanism (200) disposed on its top; a rotating member (300) disposed on the support (100) and located below the crank-rocker mechanism (200), wherein the rotating member (300) is provided with an accommodating cavity penetrating the rotating member along its radial direction; and a plunger (400) connected to the crank-rocker mechanism (200) and partially inserted into the accommodating cavity, wherein the plunger (400) and the accommodating cavity are arranged in a one-to-one correspondence; The bottom of the support (100) is provided with a suction port and a discharge port; the crank rocker mechanism (200) is configured to drive the plunger (400) to move up and down in the accommodating chamber while driving the plunger (400) to move forward and backward, so that the rotating member (300) swings forward and backward with the forward and backward movement of the plunger (400), thereby connecting the accommodating chamber with the suction port or the discharge port to inhale or discharge materials; The rotating member (300) comprises a first cylinder (310) and a second cylinder (320) of different sizes, wherein the second cylinder (320) is arranged along the axial direction of the first cylinder (310); The accommodating cavity comprises a water cavity (311) and a liquid cavity (312) arranged side by side on the first cylinder (310), and an air cavity (321) formed on the second cylinder (320); The crank-rocker mechanism (200) comprises a rotating shaft (210) pivotally connected to the plunger (400), a power crank (220) arranged at one end of the rotating shaft (210) and pivotally connected to the support (100), a balancing crank (230) arranged at the other end of the rotating shaft (210) and pivotally connected to the support (100), and a motor (240) mounted on the support (100) for driving the power crank (220) to rotate, wherein the rotating shaft (210) rotates in a circle driven by the power crank (220), thereby driving the plunger (400) to move.

2. The oscillating pump according to claim 1, wherein The plunger (400) includes a water pump plunger (410) that cooperates with the cavity wall of the water cavity (311), a liquid pump plunger (420) that cooperates with the cavity wall of the liquid cavity (312), and an air pump plunger (430) that cooperates with the cavity wall of the air cavity (321).

3. The oscillating pump according to claim 2, characterized in that The support (100) comprises a bracket (110) and a seat body (120) detachably arranged on the bracket (110); the seat body (120) is hollow inside to form a first cavity for accommodating the first cylinder (310) and a second cavity for accommodating the second cylinder (320); The top of the first cavity is provided with a first avoidance opening (121) for allowing the water pump plunger (410) and the liquid pump plunger (420) to pass through and move, and the top of the second cavity is provided with a second avoidance opening (122) for allowing the air pump plunger (430) to pass through and move.

4. The oscillating pump according to claim 3, characterized in that The suction port comprises a water inlet (123) and a liquid inlet (124) formed side by side at the bottom of the first cavity, and an air inlet formed at the bottom of the second cavity; The discharge port comprises a water outlet (125) and a liquid outlet (126) formed side by side at the bottom of the first cavity, and an air outlet formed at the bottom of the second cavity.

5. The oscillating pump according to claim 4, characterized in that A frame (117) is provided between the bracket (110) and the base (120), and the frame (117) is located directly below the water inlet (123), the liquid inlet (124), the water outlet (125), and the liquid outlet (126).

6. The oscillating pump according to claim 5, characterized in that The frame (117) is divided into a water inlet trough (1171), a liquid inlet trough (1172), a water outlet trough (1173) and a liquid outlet trough (1174) which are independent of each other and correspond to the water inlet (123), the liquid inlet (124), the water outlet (125) and the liquid outlet (126) respectively; or The frame (117) is divided into a water inlet trough (1171), a liquid inlet trough (1172) and a mixed liquid outlet trough (1175) which are independent of each other. The water inlet trough (1171) corresponds to the water inlet (123), the liquid inlet trough (1172) corresponds to the liquid inlet (124), and the mixed liquid outlet trough (1175) corresponds to the water outlet (125) and the liquid outlet (126).

7. A self-mixing foaming device, characterized in that: It comprises a foaming unit (500) and an oscillating pump according to any one of claims 1 to 6, wherein the foaming unit (500) and the oscillating pump are separately provided and are connected via a hose.

8. A hand washing machine, characterized in that: The invention comprises an oscillating pump according to any one of claims 1 to 6.

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