Noise reduction diaphragm pump and water purifier

Abstract

The noise reduction diaphragm pump comprises a pump head, the pump head is provided with a liquid inlet, a liquid outlet, a liquid inlet cavity communicating with the liquid inlet, a liquid outlet cavity communicating with the liquid outlet and an extrusion cavity communicating with the liquid inlet cavity and the liquid outlet cavity, and the pump head comprises a front cover and a piston plate; at least one of the front cover and the piston plate is provided with a separation rib which protrudes and extends towards the other one, so that the space between the front cover and the piston plate is divided into the liquid inlet cavity and the liquid outlet cavity surrounding the periphery of the liquid inlet cavity; the utility model further discloses a water purifier which comprises the noise reduction diaphragm pump. The liquid outlet cavity is arranged on the periphery of the liquid inlet cavity, so that the liquid outlet cavity can play a role in blocking and weakening noise in the liquid inlet cavity to a certain extent, noise transmission is reduced, vibration generated in the liquid inlet cavity can be weakened along with the transmission process in the process of transmitting the vibration to the liquid outlet cavity, the amplitude of the vibration transmitted to the outside is reduced, and the noise is reduced. And noise is further reduced.

Description

Technical Field

[0001] The present application belongs to the technical field of pressurized water supply, and specifically relates to a noise-reducing diaphragm pump and a water purifier. Background Art

[0002] A diaphragm pump is a type of positive displacement pump that transports fluids through periodic suction and discharge movements. It is often used in water purification systems to boost water pressure. Specifically, a diaphragm pump typically includes a pump head for pumping liquid. The pump head is equipped with a liquid inlet, a liquid outlet, an inlet cavity connected to the inlet, a liquid outlet cavity connected to the outlet, and an extrusion cavity connecting the inlet and outlet cavities. Liquid in the inlet cavity enters the extrusion cavity, is squeezed by the extrusion cavity, and is then transported out of the pump through the liquid outlet cavity, completing the liquid pumping process.

[0003] Since the diaphragm pump transmits water at a fast flow rate, when the water flows into the liquid inlet cavity from the water inlet, the water generates a large impact force on the inner wall of the liquid inlet cavity, forming periodic pulse vibrations. These vibrations are transmitted to the wall of the liquid outlet cavity through the wall of the liquid inlet cavity, causing the wall of the liquid outlet cavity to vibrate. The wall of the liquid outlet cavity or the liquid inlet cavity slaps the air during the vibration process, thereby forming sound pressure, which is transmitted to the human ear through the air, forming noise, which is not conducive to the user's auditory experience. Utility Model Content

[0004] The present application provides a noise-reducing diaphragm pump and a water purifier to solve the technical problem that traditional diaphragm pumps and water purifiers are prone to causing noise during operation.

[0005] The technical solutions adopted in this application are:

[0006] A noise-reducing diaphragm pump comprises a pump head, the pump head being provided with a liquid inlet, a liquid outlet, a liquid inlet cavity connected to the liquid inlet, a liquid outlet cavity connected to the liquid outlet, and an extrusion cavity connecting the liquid inlet cavity and the liquid outlet cavity. The pump head comprises a front cover and a piston plate, at least one of the front cover and the piston plate being provided with a dividing rib extending protruding toward the other, so as to divide the space between the front cover and the piston plate into the liquid inlet cavity and the liquid outlet cavity surrounding the periphery of the liquid inlet cavity.

[0007] The diaphragm pump described in this application also includes the following additional technical features:

[0008] The pump head is provided with a diaphragm head and an elastic pad mounted on the piston plate. The elastic pad and the piston plate cooperate to form the extrusion chamber. The diaphragm pump also includes a driving member for driving the diaphragm head to move back and forth so that the volume in the extrusion chamber changes back and forth.

[0009] The piston plate is provided with a plurality of first liquid circulation holes connecting the liquid inlet chamber and the extrusion chamber, and a plurality of second liquid circulation holes connecting the liquid outlet chamber and the extrusion chamber. A one-way conducting member is provided on the second liquid circulation hole. The one-way conducting member has a closed state when water flows into the extrusion chamber and a conducting state when water flows out of the extrusion chamber.

[0010] The one-way conductive member includes a piston plate, which includes a positioning portion and a sealing portion that can move around the positioning portion. The front cover presses against the positioning portion to fix the piston plate on the piston plate. The sealing portion is correspondingly arranged to the second liquid circulation hole for sealing the second liquid circulation hole.

[0011] The piston plate is provided with a partition sheet extending toward the elastic pad to divide the extrusion chamber into a plurality of pressurizing chambers, and the diaphragm head is provided with a plurality of pressurizing chambers respectively corresponding to the pressurizing chambers.

[0012] The dividing ribs are annular and provided with multiple paths, forming separation gaps between adjacent dividing ribs. The annular dividing ribs form raised portions and recessed portions with alternating radius lengths, so that the cavity wall of the liquid inlet cavity is provided with several buffer spaces.

[0013] A tumbling spoiler is provided in the liquid inlet cavity, and the difference between the volume of the liquid inlet cavity and the volume of the tumbling spoiler is not less than the volume of the extrusion cavity.

[0014] The inner wall of the pump head used to enclose the liquid inlet cavity is provided with a barrier member facing the liquid inlet. When the tumbling spoiler abuts against the barrier member, a liquid inlet gap exists between the tumbling spoiler and the liquid inlet.

[0015] The inner wall of the pump head, which is used to enclose the liquid inlet cavity, is provided with a plurality of reinforcing ribs arranged at intervals along its circumference, wherein the reinforcing ribs facing the liquid inlet and covering a part of the liquid inlet area constitute the barrier.

[0016] The present application also provides a water purifier, which adopts the above-mentioned noise reduction diaphragm pump, wherein the noise reduction diaphragm pump is installed horizontally, the liquid inlet faces downward, and the liquid outlet faces upward.

[0017] Due to the adoption of the above technical solution, the beneficial effects achieved by this application are as follows:

[0018] 1. The present application divides the space between the front cover and the piston plate into a liquid inlet chamber and a liquid outlet chamber surrounding the periphery of the liquid inlet chamber by setting a separation rib. Since the kinetic energy of the liquid is high and its speed is fast when the liquid is sent into the liquid inlet chamber by the pump head, the probability of the liquid whistling and vibrating due to friction with the inner wall of the liquid inlet chamber or other factors during the high-speed flow process is relatively high. The liquid inlet chamber is set to be circumferentially wrapped by the liquid outlet chamber, which can enable the liquid outlet chamber to have a certain degree of blocking and weakening effect on the noise in the liquid inlet chamber, thereby reducing the transmission of noise, and the vibration generated in the liquid inlet chamber will be weakened during the transmission process to the liquid outlet chamber, thereby reducing the vibration amplitude transmitted to the outside world, reducing the possibility of sound pressure generated by vibration of the cavity wall of the liquid outlet chamber, further reducing noise, and improving the user experience.

[0019] 2. As a preferred embodiment of the present application, a diaphragm and an elastic pad are provided, and the elastic pad cooperates with the piston plate to form an extrusion chamber. Since the extrusion chamber changes the pressure in the chamber by changing its internal space, the liquid in the chamber is squeezed to complete the delivery of the liquid to the liquid outlet chamber. As the pressure in the extrusion chamber increases and the liquid moves, the liquid will rub against the inner wall of the piston plate, generating a certain amount of vibration and noise. By providing the elastic pad, on the one hand, it can absorb the vibration of the water flow in the extrusion chamber to a certain extent, reducing the transmission of vibration from the extrusion chamber to the outside; on the other hand, the elastic pad cooperates with the diaphragm head to enhance the sealing effect of the extrusion chamber, reducing the possibility of leakage caused by the gap between the elastic pad and the piston plate during the process of changing the internal volume of the extrusion chamber. In addition, the structural characteristics of the elastic pad itself can also buffer the liquid entering the extrusion chamber, which is beneficial to the consumption of the liquid's kinetic energy, thereby reducing the vibration generated by the water flow impacting the piston plate opposite the extrusion chamber, thereby further achieving noise reduction.

[0020] 3. As a preferred embodiment of the present application, the extrusion chamber is divided into multiple pressurized chambers, so that the liquid entering the extrusion chamber from the liquid inlet chamber is divided into multiple streams. The liquid will lose part of its kinetic energy in the process of being divided through the first liquid circulation hole, and thus experience a kinetic energy reduction in the process of moving from the liquid inlet chamber to each pressurized chamber. In the process of the liquid converging from each pressurized chamber through the second liquid circulation hole to the liquid outlet chamber, the liquid kinetic energy will be reduced again as the multiple streams of liquid collide with each other, thereby reducing the vibration caused by the collision between the liquid and the piston plate and the inner wall of the liquid outlet chamber, thereby improving the vibration reduction effect of the diaphragm pump.

[0021] 4. As a preferred embodiment of the present application, the dividing rib is annular and is provided with multiple separation gaps between adjacent dividing ribs. The provision of multiple separation gaps further weakens the transmission of noise and vibration to the outside; at the same time, the annular dividing rib forms a raised portion and a recessed portion with alternating radius lengths, and the adjacent recessed portions of the inner ring dividing rib form a buffer space at the position of the raised portion. After the liquid enters the liquid inlet chamber, it contacts and collides with the recessed portion and disperses to both sides, and further collides in the buffer space, thereby reducing the kinetic energy of the liquid and thereby reducing the vibration caused by the impact of the liquid.

[0022] 5. As a preferred embodiment of the present application, a tumbling spoiler is provided in the liquid inlet chamber, and when the high-speed water flow collides with the tumbling spoiler, the tumbling spoiler is caused to tumble, causing the water flow to lose part of its kinetic energy and reduce the flow speed of the water flow. On the one hand, when the water flow with a lower flow rate collides with the cavity walls of the liquid inlet chamber, the extrusion chamber and the liquid outlet chamber, it will not cause large vibration of the cavity wall, thereby reducing the possibility of sound pressure caused by the vibration of the cavity wall, thereby reducing noise; on the other hand, after absorbing part of the kinetic energy, the flow speed of the water flow is lower, and the movement is smoother and more stable, which reduces the possibility of turbulence caused by the high-speed water flow being dispersed into multiple streams after colliding with the cavity wall, and the collision between the multiple streams of liquid. Therefore, the liquid discharged through the liquid outlet is more uniform and smooth, thereby improving the stability of the diaphragm pump's water delivery and enhancing the user experience.

[0023] 6. As a preferred embodiment of the present application, the inner wall of the pump head used to enclose the liquid inlet cavity is provided with a barrier member facing the liquid inlet, and when the tumbling spoiler abuts against the barrier member, there is a liquid inlet gap between the tumbling spoiler and the liquid inlet; since the tumbling spoiler may be displaced when impacted by the liquid, blocking the liquid inlet, which may reduce the liquid inlet space of the liquid inlet or even completely block the liquid inlet, thereby affecting the liquid inlet rate or causing liquid inlet interruption, by providing the barrier member, a liquid inlet gap is reserved between the tumbling spoiler and the liquid inlet, so that the tumbling spoiler will not hinder the flow of liquid from the liquid inlet regardless of the impact of the liquid in all directions, thereby ensuring the smoothness of the liquid inlet. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0025] Figure 1 This is a cross-sectional view of a diaphragm pump in one embodiment of the present application. Figure 2

[0026] Figure 2 The explosion of the diaphragm pump part structure in one embodiment of the present application Figure 2

[0027] Figure 3 This is a schematic diagram of the structure of the diaphragm pump under one embodiment of the present application. Figure 2

[0028] Figure 4 This is a schematic diagram of the structure of the lower front cover of an embodiment of this application Figure 2

[0029] Figure 5 This is a cross-sectional view of the diaphragm pump structure in one embodiment of the present application. Figure 2

[0030] Figure 6 This is a schematic diagram of the separation structure of the lower piston piece and the piston plate in one embodiment of the present application. Figure 2

[0031] Figure 7 This is a cross-sectional view of a water purifier according to one embodiment of the present application.

[0032] List of reference numerals:

[0033] 1 liquid inlet;

[0034] 2 liquid outlet;

[0035] 3. Liquid inlet cavity;

[0036] 4 liquid outlet cavity;

[0037] 5 roll spoilers;

[0038] 6 front cover;

[0039] 7 piston plate; 71 piston piece; 711 positioning portion; 72 sealing portion;

[0040] 8: separation rib; 81: raised portion; 82: recessed portion;

[0041] 9 diaphragm head;

[0042] 10 elastic pads;

[0043] 11 first liquid flow hole;

[0044] 12 second liquid flow hole;

[0045] 13 barriers;

[0046] 14 Strengthening ribs;

[0047] 15 extrusion cavity;

[0048] 16 brackets;

[0049] 17 mounting cavity;

[0050] 18 driving parts. DETAILED DESCRIPTION

[0051] In order to more clearly illustrate the overall concept of the present application, a detailed description is given below in an illustrative manner in conjunction with the accompanying drawings.

[0052] The following description sets forth many specific details to facilitate a thorough understanding of the present application. However, the present application may also be implemented in other ways than those described herein, and therefore, the scope of protection of the present application is not limited by the specific embodiments disclosed below. It should be noted that the embodiments of the present application and the features of each embodiment may be combined with each other unless there is a conflict.

[0053] In addition, in the description of the present application, it should be understood that the terms "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present application.

[0054] In this application, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be interpreted broadly. For example, these terms may refer to fixed connections, detachable connections, or integration; mechanical connections, electrical connections, or communication; direct connections or indirect connections through an intermediate medium; and internal connections between two components or interactions between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on specific circumstances.

[0055] In this application, unless otherwise expressly specified and limited, a first feature being "on" or "under" a second feature may be that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. In the description of this specification, descriptions with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. 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 may be combined in an appropriate manner in any one or more embodiments or examples.

[0056] like Figure 1-5As shown, a diaphragm pump includes a pump head, which is provided with a liquid inlet 1, a liquid outlet 2, a liquid inlet chamber 3 connected with the liquid inlet 1, a liquid outlet chamber 4 connected with the liquid outlet 2, and an extrusion chamber 15 connecting the liquid inlet chamber 3 and the liquid outlet chamber 4. The pump head includes a front cover 6 and a piston plate 7. At least one of the front cover 6 and the piston plate 7 is provided with a dividing rib 8 protruding and extending toward the other to separate the space between the front cover 6 and the piston plate 7 into the liquid inlet chamber 3 and the liquid outlet chamber 4 surrounding the periphery of the liquid inlet chamber 3.

[0057] The liquid inlet chamber 3 and the liquid outlet chamber 4 are located on one side of the piston plate 7, and the extrusion chamber 15 is located on the other side of the piston plate 7. The water flow of the liquid inlet 1 flows from the liquid inlet chamber 3 located in the center through the extrusion chamber 15 on the other side of the piston plate 7, and then turns to the liquid outlet chamber 4 on the periphery of the liquid inlet chamber 3.

[0058] Among them, the volume of the liquid inlet chamber is V1, the volume of the liquid outlet chamber is V2, and V1≤V2. This design avoids the occurrence of pressure buildup due to a sudden decrease in volume when water flows in and out of the liquid chamber 4, thereby ensuring the service life of the pump.

[0059] By setting a separation rib 8, the space between the front cover 6 and the piston plate 7 is divided into a liquid inlet chamber 3 and a liquid outlet chamber 4 surrounding the periphery of the liquid inlet chamber 3. Since the kinetic energy of the liquid is high and its speed is fast when the liquid is sent into the liquid inlet chamber by the pump head, the probability of whistling and vibration caused by friction with the inner wall of the liquid inlet chamber 3 or other factors during the high-speed flow of the liquid is relatively high. The liquid inlet chamber 3 is set to be wrapped circumferentially by the liquid outlet chamber 4, which can enable the liquid outlet chamber 4 to play a certain degree of blocking and weakening role on the noise in the liquid inlet chamber 3, thereby reducing the transmission of noise, and the vibration generated in the liquid inlet chamber 3 will be weakened during the process of transmission to the liquid outlet chamber 4, thereby reducing the vibration amplitude transmitted to the outside world, reducing the possibility of sound pressure generated by the vibration of the cavity wall of the liquid outlet chamber 4, further reducing noise, and improving the user experience. This embodiment does not limit the structural form of the separation rib 8. In one embodiment, Figure 3 As shown, the front cover 6 and the piston plate 7 are both provided with separation ribs 8 protruding toward each other, and the separation ribs 8 located on the front cover 6 are inserted into the gaps between the separation ribs 8 located on the piston plate 7 to separate the space between the piston plate 7 and the front cover 6.

[0060] As a preferred example under this embodiment, Figure 2 、 Figure 5As shown, the pump head is provided with a diaphragm head 9 and an elastic pad 10 installed on the piston plate 7. The elastic pad 10 and the piston plate 7 cooperate to form the extrusion chamber 15. The diaphragm pump also includes a driving member 18 for driving the diaphragm head 9 to move back and forth so that the volume in the extrusion chamber 15 changes back and forth. The diaphragm head 9 and elastic pad 10 are provided. The elastic pad 10 cooperates with the piston plate 7 to form an extrusion chamber 15. Since the extrusion chamber 15 changes the pressure within the chamber by changing its internal space, it squeezes the liquid in the chamber to complete the liquid delivery to the liquid outlet chamber 4. As the pressure in the extrusion chamber 15 increases and the liquid moves, the liquid rubs against the inner wall of the piston plate 7, generating a certain amount of vibration and noise. The elastic pad 10 can, on the one hand, absorb the vibration of the water flow in the extrusion chamber 15 to a certain extent, reducing the transmission of vibration from the extrusion chamber 15 to the outside. On the other hand, the elastic pad 10 cooperates with the diaphragm head 9 to enhance the sealing effect of the extrusion chamber 15, reducing the possibility of leakage caused by the gap between the elastic pad 10 and the piston plate 7 during the process of changing the internal volume of the extrusion chamber 15. In addition, the structural characteristics of the elastic pad 10 can also buffer the liquid entering the extrusion chamber 15, which is beneficial to the dissipation of the liquid's kinetic energy, thereby reducing the vibration caused by the water flow impacting the part of the piston plate 7 opposite the extrusion chamber 15, thereby further achieving noise reduction.

[0061] This embodiment does not limit the connection method between the elastic pad 10 and the piston plate 7. In one example, the elastic pad 10 is provided with a positioning flange extending toward the piston plate 7. The elastic pad 10 is positioned over the side of the piston plate 7 facing the diaphragm head 9 via the positioning flange, with an interference fit between the positioning flange and the piston plate 7. In another example, a positioning bracket is provided below the piston plate 7, and the elastic pad 7 is clamped and fixed between the positioning bracket and the piston plate 7. The positioning bracket is also provided with a stopper hole corresponding to the diaphragm head 9 to provide a limit and guide for the diaphragm head 9 during movement.

[0062] As a preferred example under this embodiment, Figure 3 As shown, the piston plate 7 is provided with a plurality of first liquid circulation holes 11 connecting the liquid inlet chamber 3 and the extrusion chamber 15, and a plurality of second liquid circulation holes 12 connecting the liquid outlet chamber 4 and the extrusion chamber 15; a one-way conducting member is provided on the second liquid circulation hole 12, and the one-way conducting member has a closed state when water flows into the extrusion chamber 15 and a conducting state when water flows out of the extrusion chamber 15.

[0063] like Figure 6As shown, the one-way conduction component can adopt a piston sheet 71 covering the second liquid flow hole 12. When water flows into the extrusion cavity 15 from the first liquid flow hole 11, the piston sheet 71 is in a sealed state due to the negative pressure in the extrusion cavity 15. When water flows out of the extrusion cavity 15 through the second liquid flow hole 12 into the liquid outlet cavity 4, the piston sheet 71 will be opened by the impact of the water flow to achieve water passing. Specifically, the piston sheet 71 includes a positioning portion 711 and a sealing portion 712 that can move around the positioning portion 711. The front cover 6 presses against the positioning portion 711 to fix the piston sheet 71 on the piston plate 7, and the sealing portion 712 is correspondingly arranged with the second liquid flow hole 12 for sealing it.

[0064] As a preferred example in this embodiment, as Figure 3 and 5 shown, the piston plate 7 is provided with a partition sheet extending towards the elastic pad 10 to divide the extrusion cavity into multiple pressurization cavities, and the diaphragm head 9 is provided with multiple corresponding to the pressurization cavities respectively; where the total volume of the multiple pressurization cavities is V4, V4 < V1, and the ratio range of V1:V4 is 1.5 - 6; specifically, V1 = , preferably 40 ml, the volume of the extrusion cavity 15, that is, the total volume of the multiple pressurization cavities is V4 = 10 - 30 ml, preferably 20 ml, and 5 - 6 pressurization cavities are provided, and the volume of each cavity is 3 - 4 ml. This design ensures the volume of the liquid extruded each time, and at the same time, the reasonable distribution of the volume of the liquid inlet cavity 3 and the extrusion cavity 15 makes the water inflow and outflow more stable and smooth, ensuring the water outflow rate.

[0065] In addition, within the preset working duration T of the diaphragm pump, the output water flow rate of the liquid outlet 2 is L, and the ratio range of L:V1 is 3 - 25; the preset working duration T = 6 s; specifically, the water outflow rate of the liquid outlet 2 is 2 - 5 L / min, and the total output water volume in 10 s is 200 - 500 ml. This design enables the diaphragm pump to quickly enter the stable operation stage and makes the water outflow rate quickly tend to be stable.

[0066] Under this preferred example, two second liquid flow holes 12 are correspondingly arranged for each pressurization cavity to facilitate quick drainage; under this design, as Figure 6 shown, the middle part of the piston sheet 71 serves as the positioning portion 711, and specifically, a positioning column structure can be integrally extended. A blind hole is provided between the two second liquid flow holes 12 of each pressurization cavity on the piston plate 7 for the positioning column to be inserted. Both ends of the piston plate 71 serve as the sealing portion 712 to respectively seal the two second liquid flow holes 12.

[0067] The extrusion chamber 15 is divided into multiple pressurized chambers, so that the liquid entering the extrusion chamber 15 from the liquid inlet chamber 3 is divided into multiple streams. The liquid loses part of its kinetic energy in the process of being divided through the first liquid circulation hole 11, and thus experiences a kinetic energy reduction in the process of moving from the liquid inlet chamber 3 to each pressurized chamber. In the process of the liquid converging from each pressurized chamber to the liquid outlet chamber 4 through the second liquid circulation hole 12, the liquid kinetic energy is reduced again as the multiple streams of liquid collide with each other, thereby reducing the vibration caused by the collision between the liquid and the piston plate 7 and the inner wall of the liquid outlet chamber 4, thereby improving the vibration reduction effect of the diaphragm pump.

[0068] This embodiment does not limit the structural form of the extrusion chamber 15. In another example, the extrusion chamber 15 can also be set as an integral chamber, which is connected to the liquid inlet chamber 3 through the first liquid circulation hole 11 and to the liquid outlet chamber 4 through the second liquid circulation hole 12.

[0069] As a preferred example under this embodiment, Figure 3 and 6 As shown, the separating ribs 8 are annular and have multiple sections, with gaps formed between adjacent separating ribs 8. The multiple gaps further reduce the transmission of noise and vibration to the outside. The annular separating ribs 8 are formed with raised portions 81 and recessed portions 82 of alternating radius lengths. Adjacent recessed portions 82 on the inner ring of the separating ribs 8 form buffer spaces at the locations of the raised portions 81. After entering the liquid inlet chamber 3, the liquid collides with the recessed portions 82 and disperses to both sides, further colliding in the buffer spaces. This dissipates the liquid's kinetic energy, thereby reducing vibrations caused by the liquid impact.

[0070] As a preferred example under this embodiment, a tumbling spoiler 5 is provided in the liquid inlet chamber 3. The difference between the volume of the liquid inlet chamber 3 and the volume of the tumbling spoiler 5 is not less than the volume of the extrusion chamber 15. Under the action of water flow, the tumbling spoiler 5 can tumble in the liquid inlet chamber 3. During the movement, the tumbling spoiler 5 cuts and collides with the inlet water flow of the liquid inlet chamber 3, thereby generating water flow turbulence in the liquid inlet chamber 3.

[0071] By arranging the tumbling spoiler 5 in the liquid inlet chamber 3, the tumbling spoiler 5 is caused to tumble when the high-speed water flow collides with the tumbling spoiler 5, so that the water flow loses a part of its kinetic energy and reduces the flow speed of the water flow. On the one hand, the water flow with a lower flow rate will not cause a large vibration of the cavity wall when colliding with the cavity wall of the liquid inlet chamber 3, the extrusion cavity 5 and the liquid outlet cavity 4, thereby reducing the possibility of the cavity wall vibration causing sound pressure, thereby reducing noise; on the other hand, the water flow velocity is lower after the kinetic energy is absorbed, and the movement is smoother and more stable, which reduces the collision between the high-speed water flow and the cavity wall. After the collision, the liquid is dispersed into multiple streams, and the possibility of turbulence caused by the mutual collision between the multiple streams of liquid is reduced, so that the liquid discharged through the liquid outlet 2 is more uniform and smooth, thereby improving the stability of the diaphragm pump water delivery and improving the user experience; the difference between the volume of the liquid inlet chamber 3 and the volume of the tumbling spoiler 5 is not less than the volume of the extrusion chamber 15. Such an arrangement ensures that when the diaphragm head 9 compresses the extrusion chamber 15, after the liquid in the liquid chamber 3 is drawn out, there is still liquid in the liquid inlet chamber 3, so that there is no short-term water shortage in the liquid inlet chamber 3.

[0072] As a preferred example under this embodiment, Figure 3 、 Figure 4 As shown, the inner wall of the pump head used to enclose the liquid inlet chamber 3 is provided with a barrier 13 facing the liquid inlet 1. When the tumbling spoiler 5 abuts against the barrier 13, a liquid inlet gap exists between the tumbling spoiler 5 and the liquid inlet 1. Since the tumbling spoiler 5 may be displaced when impacted by liquid, blocking the liquid inlet 1, which may reduce the liquid inlet space of the liquid inlet 1 or even completely block the liquid inlet 1, thereby affecting the liquid inlet rate or causing liquid inlet interruption, the barrier 13 is provided to reserve a liquid inlet gap between the tumbling spoiler 5 and the liquid inlet 1, so that the tumbling spoiler 5 will not hinder the flow of liquid from the liquid inlet 1 regardless of the direction of liquid impact, thereby ensuring smooth liquid inlet.

[0073] As a preferred embodiment of this embodiment, Figure 4 As shown, the inner wall of the pump head, which is used to enclose the liquid inlet chamber 3, is provided with a plurality of spaced reinforcing ribs 14 along its circumference, wherein the reinforcing rib 14 directly opposite the liquid inlet 1 and covering a portion of the liquid inlet 1 constitutes the barrier 13. By providing a plurality of spaced reinforcing ribs 14, the structural strength of the liquid inlet chamber 3 can be enhanced, and the probability of deformation and damage to the liquid inlet chamber 3 due to liquid impact and the displacement of the tumbling spoiler 5 after being impacted by the liquid is increased, which helps to increase the service life of the liquid inlet chamber 3. In addition, the reinforcing rib directly opposite the liquid inlet 1 and covering a portion of the liquid inlet 1 also integrates the function of the barrier 13, further integrating the functions and optimizing the structural design of the diaphragm pump.

[0074] This application does not limit the movement of the tumble spoiler 5. In one embodiment, the tumble spoiler 5 has two degrees of freedom. In another embodiment, the tumble spoiler 5 has four degrees of freedom. In yet another embodiment, the tumble spoiler 5 has six degrees of freedom.

[0075] This application does not limit the structural shape of the tumble spoiler 5. Figure 2 As shown, a specific example of a spherical tumble spoiler 5 is given, but the present application is not limited thereto. The tumble spoiler 5 can also be a hollow sphere, a cylinder, a hollow cylinder, or other structural shapes.

[0076] The present application does not limit the material form of the tumbling spoiler 5. The tumbling spoiler 5 can be an elastic spherical structure with a flow disturbance, and the number can be one or more. The elastic properties of the tumbling spoiler 5 are utilized, and the tumbling spoiler 5 continuously impacts and rebounds during the tumbling motion in the liquid inlet chamber 3, thereby improving its flow disturbance effect. In addition, when the water flow hits the tumbling spoiler 5, it will cause a certain deformation of the tumbling spoiler, thereby converting a portion of the kinetic energy of the water flow into the elastic potential energy of the tumbling spoiler 5, thereby reducing the impact on the pump head housing, thereby reducing the vibration amplitude of the pump head. The tumbling spoiler 5 can also be a structure made of a hard material.

[0077] As a preferred embodiment of the present application, the tumbling spoiler 5 is at least partially made of an antibacterial material. When the diaphragm pump is suspended, some liquid may remain in the liquid inlet chamber 3, the extrusion chamber 15, and the liquid outlet chamber 4. If the diaphragm pump is not in operation for a long time, this residual liquid may breed bacteria. Providing the tumbling spoiler 5 with a structure at least partially made of an antibacterial material can effectively inhibit the growth of bacteria in the residual liquid inside the diaphragm pump, thereby improving the user experience. Preferably, the antibacterial material is selected from an antibacterial agent containing at least one of silver, zinc, copper, and zinc oxide.

[0078] In another preferred embodiment of the present application, the tumble spoiler 5 is filled with an antimicrobial material. Preferably, the antimicrobial material is selected from an antimicrobial agent containing at least one of silver, zinc, copper, and zinc oxide. Filling the tumble spoiler 5 with the antimicrobial material effectively inhibits bacterial growth in the residual liquid within the diaphragm pump.

[0079] A water purifier adopts the above-mentioned noise reduction diaphragm pump. The diaphragm pump is installed horizontally, with the liquid inlet 1 located at the bottom and the liquid outlet 2 located at the top. Driven by a power mechanism, the inlet water flows into the liquid inlet cavity 3 from the lower liquid inlet 1, flows horizontally to the extrusion cavity 15, and then deflects to enter the liquid outlet cavity 4 located on the outer periphery of the liquid inlet cavity 3, and then flows out of the diaphragm pump from the upper liquid outlet 4.

[0080] like Figure 7As shown, the water purifier includes a bracket 16, on which are mounted a filtration unit and a booster unit. The booster unit is the aforementioned noise-reducing diaphragm pump. Bracket 16 is provided with a mounting cavity 17 for mounting the diaphragm pump. The diaphragm pump is laterally mounted within the mounting cavity 17, with the liquid inlet 1 located at the bottom and the liquid outlet 2 located at the top. When a tumbling spoiler 5 is positioned within the liquid inlet cavity 3, when the diaphragm pump is not operating, the tumbling spoiler 5 is located in a first region, i.e., near the liquid inlet 1, under the action of gravity. When the diaphragm pump is operating, the tumbling spoiler 5 is flushed by the water flow to a second region, i.e., away from the liquid inlet 1, where it moves irregularly. In addition to losing some kinetic energy due to impact with the tumbling spoiler 5, the liquid also provides a certain degree of buoyancy on the tumbling spoiler 5, thereby converting some of the kinetic energy in the liquid into the gravitational potential energy required to lift the tumbling spoiler 5, thereby enhancing the tumbling spoiler 5's buffering effect on the liquid.

[0081] Anything not described in this application can be achieved by adopting or drawing on existing technologies.

[0082] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on the differences from other embodiments.

[0083] The foregoing is merely an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application should all be included within the scope of the claims of the present application.

Claims

1. A noise reduction diaphragm pump, comprising a pump head, wherein the pump head is provided with a liquid inlet, a liquid outlet, a liquid inlet cavity communicating with the liquid inlet, a liquid outlet cavity communicating with the liquid outlet, and an extrusion cavity communicating with the liquid inlet cavity and the liquid outlet cavity, characterized in that: The pump head includes a front cover and a piston plate, and at least one of the front cover and the piston plate is provided with a dividing rib protruding and extending toward the other to divide the space between the front cover and the piston plate into the liquid inlet chamber and the liquid outlet chamber surrounding the periphery of the liquid inlet chamber.

2. The noise reduction diaphragm pump according to claim 1, characterized in that: The pump head is provided with a diaphragm head and an elastic pad mounted on the piston plate. The elastic pad and the piston plate cooperate to form the extrusion chamber. The diaphragm pump also includes a driving member for driving the diaphragm head to move back and forth so that the volume in the extrusion chamber changes back and forth.

3. The noise reduction diaphragm pump according to claim 1, characterized in that: The piston plate is provided with a plurality of first liquid circulation holes connecting the liquid inlet chamber and the extrusion chamber, and a plurality of second liquid circulation holes connecting the liquid outlet chamber and the extrusion chamber. A one-way conducting member is provided on the second liquid circulation hole. The one-way conducting member has a closed state when water flows into the extrusion chamber and a conducting state when water flows out of the extrusion chamber.

4. The noise reduction diaphragm pump according to claim 3, characterized in that: The one-way conductive member includes a piston plate, which includes a positioning portion and a sealing portion that can move around the positioning portion. The front cover presses against the positioning portion to fix the piston plate on the piston plate. The sealing portion is correspondingly arranged to the second liquid circulation hole for sealing the second liquid circulation hole.

5. The noise reduction diaphragm pump according to claim 2, characterized in that: The piston plate is provided with a partition sheet extending toward the elastic pad to divide the extrusion chamber into a plurality of pressurizing chambers, and the diaphragm head is provided with a plurality of pressurizing chambers respectively corresponding to the pressurizing chambers.

6. The noise reduction diaphragm pump according to claim 1, characterized in that: The dividing ribs are annular and provided with multiple paths, forming separation gaps between adjacent dividing ribs. The annular dividing ribs form raised portions and recessed portions with alternating radius lengths, so that the cavity wall of the liquid inlet cavity is provided with several buffer spaces.

7. The noise reduction diaphragm pump according to claim 1, characterized in that: A tumbling spoiler is provided in the liquid inlet cavity, and the difference between the volume of the liquid inlet cavity and the volume of the tumbling spoiler is not less than the volume of the extrusion cavity.

8. The noise reduction diaphragm pump according to claim 7, characterized in that: The inner wall of the pump head used to enclose the liquid inlet cavity is provided with a barrier member facing the liquid inlet. When the tumbling spoiler abuts against the barrier member, a liquid inlet gap exists between the tumbling spoiler and the liquid inlet.

9. The noise reduction diaphragm pump according to claim 8, characterized in that: The inner wall of the pump head, which is used to enclose the liquid inlet cavity, is provided with a plurality of reinforcing ribs arranged at intervals along its circumference, wherein the reinforcing ribs facing the liquid inlet and covering a part of the liquid inlet area constitute the barrier.

10. A water purifier, using the noise reduction diaphragm pump according to any one of claims 1 to 9, characterized in that: The noise reduction diaphragm pump is installed horizontally, with the liquid inlet facing downward and the liquid outlet facing upward.

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