Diaphragm pump and water purifier

Abstract

The 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 diaphragm pump further comprises a rolling turbulent flow piece arranged in the liquid inlet cavity and / or the liquid outlet cavity. The rolling turbulent flow piece can roll in the liquid inlet cavity and / or the liquid outlet cavity under the impact of water flow, and turbulent flow is conducted on the water flow; the utility model further discloses a water purifier which comprises the diaphragm pump. Through the arrangement of the rolling spoiler, when water flow moving at a high speed makes contact with and collides with the rolling spoiler, kinetic energy of water flow is converted into motion kinetic energy of the rolling spoiler, so that fluid with a slow flow speed does not cause large vibration of the cavity wall when the fluid collides with the cavity wall; meanwhile, friction noise generated when the water flow flows through the cavity wall is correspondingly reduced, and an excellent water flow noise reduction effect is achieved in a high-flow-speed machine according to the technical scheme.

Description

Technical Field

[0001] The present application belongs to the technical field of pressurized water supply, and specifically relates to a 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 diaphragm pump and a water purifier, which solve the technical problem that traditional diaphragm pumps and water purifiers are prone to causing noise during operation without affecting the raw water power, water flow rate and water speed.

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

[0006] A diaphragm pump includes a pump head, which is 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. It also includes a tumbling spoiler arranged in the liquid inlet cavity and / or the liquid outlet cavity. The tumbling spoiler can roll in the liquid inlet cavity and / or the liquid outlet cavity under the impact of water flow and disturb the water flow.

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

[0008] The tumbling spoiler is at least one spoiler sphere. When the tumbling spoiler is arranged in the liquid inlet cavity, 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.

[0009] The liquid inlet cavity has a cavity wall surrounding the tumbling spoiler, and the cavity wall has convex parts and concave parts with alternating radius lengths, so that the cavity wall of the liquid inlet cavity forms a plurality of buffer spaces to buffer and reduce the pressure of the water flow.

[0010] The volume of the liquid inlet chamber is V1, the volume of the tumbling spoiler is V2, and the volume of the liquid outlet chamber is V3. The liquid inlet chamber and / or the liquid outlet chamber have a turbulent flow space for the tumbling spoiler to move, and the turbulent flow space is greater than or equal to the volume V2 of the tumbling spoiler, that is, V1-V2≥V2, and / or V3-V2≥V2.

[0011] The tumbling spoiler forms a zigzag motion in the spoiler space, the maximum motion stroke of the single-line motion in the zigzag motion is greater than the radius length of the tumbling spoiler, the ratio range of V1:V2 is 4-20; and / or the ratio range of V3:V2 is 4-20.

[0012] When the tumbling spoiler is provided in the liquid inlet cavity, the volume V3 of the liquid outlet cavity is greater than or equal to the volume of the spoiler space, that is, V3 ≥ V1 - V2;

[0013] When the tumbling spoiler is provided in the liquid outlet cavity, the volume of the spoiler space is greater than or equal to the volume V1 of the liquid inlet cavity, that is, V3-V2≥V1;

[0014] When the tumbling spoiler is provided in both the liquid inlet cavity and the liquid outlet cavity, the volume of the spoiler space in the liquid outlet cavity is greater than or equal to the volume of the spoiler space in the liquid inlet cavity, that is, V3-V2≥V1-V2.

[0015] When the diaphragm pump is installed and used, the liquid inlet cavity and the extrusion cavity are arranged transversely, the liquid inlet is located below the liquid inlet cavity, and the tumbling spoiler is located above the liquid inlet under the action of gravity.

[0016] The liquid inlet cavity has a longitudinal connecting wall, and a flow port connected to the extrusion cavity is provided on the connecting wall. The flow port and the liquid inlet form a right-angle turn of the water flow, and the water flow in the liquid inlet cavity that has passed through the turbulent flow flows horizontally into the extrusion cavity from the flow port.

[0017] The pump head includes a front cover and a piston plate, at least one of the front cover and the piston plate is provided with a dividing rib protruding and extending toward the other to form a cavity wall of the liquid inlet cavity, and the cavity wall divides 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.

[0018] The present application also provides a water purifier, which adopts the above-mentioned diaphragm pump, wherein the diaphragm pump is installed horizontally, the liquid inlet faces downward, and the liquid outlet faces upward.

[0019] Due to the adoption of the above technical solution, the beneficial effects achieved by this application are as follows:

[0020] 1. By arranging a tumbling spoiler in the liquid inlet chamber and / or the liquid outlet chamber, the tumbling spoiler causes the tumbling spoiler to tumble when the high-speed water flow collides with the tumbling spoiler, causing the water flow to lose part of its kinetic energy and reduce the flow speed of the water flow. On the one hand, the flow speed of the water flow is slowed down, and the water flow will not cause large vibration of the cavity wall when colliding with the cavity wall of the liquid inlet chamber, the extrusion cavity, and the liquid outlet cavity, thereby reducing the possibility of sound pressure caused by the vibration of the cavity wall, thereby reducing noise; on the other hand, the flow speed of the water flow after the partial kinetic energy is absorbed is lower, and the movement of the water flow after the kinetic energy conversion is smoother and more stable, thereby reducing the possibility of turbulence caused by the high-speed water flow being dispersed into multiple streams after colliding with the cavity wall and the mutual collision between the multiple streams of liquid. As a result, 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.

[0021] 2. The tumbling spoiler is elastic and continuously impacts and rebounds during the tumbling motion in the liquid inlet chamber and / or the liquid outlet chamber, which can improve its turbulence effect. In addition, when the water flow hits the tumbling spoiler, it will cause a certain deformation of the tumbling spoiler, thereby converting part of the kinetic energy of the water flow into the elastic potential energy of the tumbling spoiler, thereby reducing the impact on the pump head housing and thus reducing the vibration amplitude of the pump head.

[0022] 3. The wall of the liquid inlet chamber is formed with alternating convex parts and concave parts, so that a number of buffer spaces are formed on the wall. After the water flows into the liquid inlet chamber, it contacts and collides with the concave parts and disperses to both sides, and further collides in the buffer space, thereby reducing the kinetic energy of the water and thus reducing the vibration caused by the impact of the water flow.

[0023] 4. By setting the effective water flow volume of the liquid outlet chamber to be larger than the effective water flow volume of the liquid inlet chamber, the pressure buildup caused by the sudden decrease in volume when the water flows in and out of the liquid chamber can be avoided, thereby ensuring the service life of the pump.

[0024] 5. The diaphragm pump is in a horizontal position when in use, so that the tumbling spoiler falls just above the water inlet under the action of gravity. When the diaphragm pump is working, the water at the water inlet moves upward under the action of pressure, overcoming the gravity of the tumbling spoiler and impacting the tumbling spoiler. At the same time, the water flow also has to overcome its own gravity, and part of its kinetic energy is converted into gravitational potential energy, which is more conducive to the consumption of water kinetic energy, thereby achieving the effect of reducing the impact of water flow on the pump casing. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] 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:

[0026] Figure 1 This is a cross-sectional view of a diaphragm pump according to one embodiment of the present application;

[0027] Figure 2 This is an exploded view of a partial structure of a diaphragm pump according to one embodiment of the present application;

[0028] Figure 3 This is a schematic structural diagram of a diaphragm pump structure according to one embodiment of the present application;

[0029] Figure 4 This is a structural diagram of the lower front cover in one embodiment of the present application;

[0030] Figure 5 This is a cross-sectional view of a partial structure of a diaphragm pump according to one embodiment of the present application;

[0031] 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;

[0032] Figure 7 This is a cross-sectional view of a water purifier according to one embodiment of the present application.

[0033] List of reference numerals:

[0034] 1 liquid inlet;

[0035] 2 liquid outlet;

[0036] 3. Liquid inlet cavity;

[0037] 4 liquid outlet cavity;

[0038] 5 roll spoilers;

[0039] 6 front cover;

[0040] 7 piston plate; 71 piston piece; 711 positioning portion; 72 sealing portion;

[0041] 8: separation rib; 81: raised portion; 82: recessed portion;

[0042] 9 diaphragm head;

[0043] 10 elastic pads;

[0044] 11 first liquid flow hole;

[0045] 12 second liquid flow hole;

[0046] 13 barriers;

[0047] 14 Strengthening ribs;

[0048] 15 extrusion cavity;

[0049] 16 brackets;

[0050] 17 mounting cavity;

[0051] 18 driving parts. DETAILED DESCRIPTION

[0052] 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.

[0053] 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.

[0054] 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 cannot be understood as limitations on the present application.

[0055] In this application, unless otherwise expressly specified or limited, terms such as "installed," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0056] In this application, unless otherwise expressly specified and limited, a first feature "above" or "below" a second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means 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 representation of the above terms does 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.

[0057] like Figure 1 、 Figure 4 、 Figure 5As shown, a diaphragm pump includes a pump head, which is provided with a liquid inlet 1, a liquid outlet 2, a liquid inlet cavity 3 connected with the liquid inlet 1, a liquid outlet cavity 4 connected with the liquid outlet 2, and an extrusion cavity 15 connecting the liquid inlet cavity 3 and the liquid outlet cavity 4, and also includes a tumbling spoiler 5 arranged in the liquid inlet cavity 3 and / or the liquid outlet cavity 4.

[0058] In some embodiments, a tumbling spoiler 5 is provided in the liquid inlet chamber 3. The water flow flowing in from the liquid inlet 1 impacts the tumbling spoiler 5, causing it to tumble in the liquid inlet chamber 3. During the movement, the tumbling spoiler 5 cuts and collides with the water flow in the liquid inlet chamber 3, causing water flow disturbance in the liquid inlet chamber 3. The water after being disturbed by the tumbling spoiler 5 flows out from the liquid outlet 2.

[0059] In some other embodiments, a tumbling spoiler 5 is provided in the liquid outlet cavity 4, and the incoming water flow from the extrusion cavity 15 impacts the tumbling spoiler 5, causing it to tumble in the liquid outlet cavity 4. During the movement, the tumbling spoiler 5 cuts and collides with the incoming water flow of the liquid outlet cavity 4, causing water flow disturbance in the liquid outlet cavity 4, and the water after being disturbed by the tumbling spoiler 5 flows out from the liquid outlet 2.

[0060] When the water flow comes into contact and collides with the tumbling spoiler 5, the high-speed water flow converts the flow kinetic energy of the water flow into the motion kinetic energy of the tumbling spoiler 5 when coming into contact and colliding with the tumbling spoiler 5. On the one hand, the flow velocity of the water flow is slowed down, and the water flow will not cause large vibration of the cavity wall when colliding with the cavity wall, reducing the possibility of sound pressure caused by the vibration of the cavity wall. At the same time, the friction noise generated by the water flow passing through the cavity wall is also reduced accordingly; on the other hand, the flow velocity of the water flow after part of the kinetic energy is absorbed is lower, and the water flow after the kinetic energy conversion moves more steadily and smoothly, reducing 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 2 is more uniform and smooth, thereby improving the stability of the diaphragm pump's water delivery and improving the user experience.

[0061] In this embodiment, the tumbling spoiler 5 is a spherical spoiler structure, and the number can be one or more, and the tumbling spoiler 5 has elastic force. During the tumbling movement in the liquid inlet chamber 3 and / or the liquid outlet chamber 4, the tumbling spoiler 5 collides and rebounds with the cavity wall of the liquid inlet chamber 3 and / or the liquid outlet chamber 4, realizing collision turbulence in the liquid inlet chamber 3 and / or the liquid outlet chamber 4.

[0062] By utilizing the tumbling spoiler 5 to continuously impact and rebound during its tumbling motion within the liquid inlet chamber 3 and / or liquid outlet chamber 4, its flow disturbance effect can be enhanced. Furthermore, when the water flow impacts the tumbling spoiler 5, it causes a certain degree of 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 and thus reducing the vibration amplitude of the pump head. At the same time, the difference between the volume of the liquid inlet chamber 3 and the volume of the tumbling spoiler 5 is greater than or equal to the volume of the extrusion chamber 15. This arrangement ensures that when the diaphragm head 9 compresses the extrusion chamber 15, after the liquid in the liquid inlet chamber 3 is drawn out, liquid is still present in the liquid inlet chamber 3, thereby preventing a short-term water shortage in the liquid inlet chamber 3.

[0063] In some embodiments, the volume of the liquid inlet chamber 3 is V1, the volume of the tumbling spoiler 5 is V2, and the volume of the liquid outlet chamber 4 is V3. The liquid inlet chamber 3 and / or the liquid outlet chamber 4 have a turbulent space for accommodating the tumbling spoiler 5, and the turbulent space is greater than or equal to the volume V2 of the tumbling spoiler 5, that is, V1-V2≥V2, and / or V3-V2≥V2; in order to make the tumbling spoiler 5 form a zigzag motion in the turbulent space, the maximum motion stroke of the single-line motion in the zigzag motion is greater than the radius length of the tumbling spoiler, and the ratio range of V1:V2 is preferably 4-20; and / or the ratio range of V3:V2 is preferably 4-20. In this embodiment, V1=20-60ml, preferably 40ml, V2=2-10cm 3 , preferably 4cm 3 , V3=20-60ml, preferably 40ml. The above arrangement ensures the volume of the flow-disturbing space, so that the tumbling spoiler 5 can fully tumble in the flow-disturbing space, thereby achieving a better flow-disturbing effect.

[0064] In order to verify the technical effect of the technical solution of the present application, the relationship between the ratio of V1 (V3): V2 and noise, water flow rate, and green sound index was tested. In the judgment of the test results, samples with noise greater than 58dB (A), water flow rate less than 0.7L / min, and green sound index greater than 5 were judged to be unqualified. In view of the above three technical requirements, the following samples with relatively good overall performance were selected and judged to be qualified. The data are detailed in the table below:

[0065]

[0066] Table 1

[0067] Among the test specimens, specimens 1# to 11# had the tumble spoiler installed in the liquid inlet chamber; specimens 12# to 17# had the tumble spoiler installed in the liquid outlet chamber; and specimens 18# to 21# had tumble spoilers installed in both the liquid inlet and outlet chambers. As can be seen from the table above, when the V1(V3):V2 ratio is below 20, the noise level is below the set threshold of 58dB(A). When the V1(V3):V2 ratio exceeds 20, the noise level increases significantly, exceeding the set threshold of 58dB(A). This is because when the V1(V3):V2 ratio exceeds 20, the volume of the tumble spoiler 5 is too small compared to the flow disturbance space, and its flow disturbance effect is not significant. The smaller tumble spoiler 5 weakens both the cutting effect on the water flow and the conversion of kinetic energy, resulting in a significant decrease in noise reduction. At the same time, when the ratio of V1 (V3): V2 exceeds 20, the sound quality deteriorates significantly in the green sound index test. The main reason is that when the ratio of V1 (V3): V2 exceeds 20, it means that the water inlet flow rate is relatively large. At a relatively large water inlet flow rate, the loudness, sharpness, jitter and roughness generated by the water flow impacting the cavity wall increase. From the above test samples, it can be seen that the samples with V1-V2 ≥ V2 and V3-V2 ≥ V2 also meet the various threshold requirements. However, in order to pursue a larger water outlet flow rate, the water outlet flow rate is preferably greater than 1.5L / min, so the ratio of V1 (V3): V2 is preferably greater than 4. It can be seen from the above test samples that when the ratio of V1 (V3): V2 is below 4, although the noise is significantly reduced, the water outlet flow rate of the diaphragm pump is also gradually decreasing. The reason is that the volume of the tumbling spoiler 5 is too large compared to the spoiler space, which reduces the effective water flow space. The reduction in water inlet leads to a decrease in the water outlet flow rate. Considering that when the ratio is less than 4, further reducing the volume share of V1 (V3) has little effect on noise reduction. In order to obtain a better flow range and noise adaptation, a ratio range of 4 and above is specially selected; as can be seen from the above table, when the ratio of V1 (V3): V2 is between 4 and 20, the noise level meets the standard requirements, and the water outlet flow rate also meets the needs of large flow, and the green sound index is also in a relatively good test quality.

[0068] Currently, most Green Sound certified machines on the market are low-flow machines. The smaller the water flow rate, the less impact and friction the water has on the cavity, resulting in relatively low overall noise. To achieve noise reduction for high-flow machines, the solution of this application can achieve a flow rate greater than 1.5L / min. Even the preferred embodiments of 5# and 19# can achieve a high-flow rate of 2.5-4L / min, while ensuring low test noise and a relatively good Green Sound Index for overall noise reduction.

[0069] As a further study, technical improvements are made to the volumes of the liquid outlet cavity and the liquid inlet cavity: in some embodiments, when the tumbling spoiler 5 is arranged in the liquid inlet cavity 3, the volume V3 of the liquid outlet cavity 4 is greater than or equal to the volume of the spoiler space, that is, V3 ≥ V1-V2.

[0070] In some other embodiments, when the tumbling spoiler 5 is disposed in the liquid outlet cavity 4 , the volume of the spoiler space is greater than or equal to the volume V1 of the liquid inlet cavity 3 , that is, V3 − V2 ≥ V1 .

[0071] In some other embodiments, when the tumbling spoiler 5 is arranged in the liquid inlet cavity 3 and the liquid outlet cavity 4, the volume of the turbulent space in the liquid outlet cavity 4 is greater than or equal to the volume of the turbulent space in the liquid inlet cavity 3, that is, V3-V2≥V1-V2.

[0072] From the above-mentioned 4#, 6#, 11#, 12#, 13#, and 16# test samples, it can be seen that the size of the effective water flow volume of the liquid outlet chamber 4 and the effective water flow volume of the liquid inlet chamber 3 has a significant impact on the green sound index. Through the configuration of the above-mentioned embodiment, the effective water flow volume of the liquid outlet chamber 4 is made larger than the effective water flow volume of the liquid inlet chamber 3, avoiding the occurrence of pressure holding due to the sudden decrease in volume when the water flows in and out of the liquid outlet chamber 4. The reduction in the volume of the liquid outlet chamber squeezes the water flow out, which will accelerate the flow rate of the water flow and increase the friction noise of the water flow. On the other hand, it will generate a backflow negative pressure in the squeezing chamber, which may cause the frequent opening and closing of the squeezing check chamber valve disc, which has a significant impact on the jitter, roughness, and pump life in the noise test. Especially in machines with large flow rates, an increase in flow rate means an increase in the volume of pressurized water, which will extend the reaction time of pressure accumulation and increase the loudness and sharpness of the water flow. In order to meet the noise reduction requirements at large flow rates and improve the sound quality, the volume ratio of the above-mentioned liquid outlet cavity has been increased. In the measured value of the green sound index, the index requirement has been achieved to a better level. While passing the sound quality certification, the above-mentioned improvements also ensure the service life of the large-flow pump.

[0073] The present application does not limit the arrangement of the liquid inlet cavity 3 and the liquid outlet cavity 4, and any of the following embodiments may be adopted:

[0074] Embodiment 1: 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 in the vertical direction to divide the space between the front cover 6 and the piston plate 7 into a liquid inlet chamber 3 and a liquid outlet chamber 4 arranged left and right in the horizontal direction.

[0075] Embodiment 2: The pump head includes a front cover 6 and a piston plate 7, and at least one of the front cover 6 and the piston plate 7 is provided with a dividing rib 8 protruding and extending in the horizontal direction to divide the space between the front cover 6 and the piston plate 7 into a liquid inlet chamber 3 and a liquid outlet chamber 4 arranged vertically up and down.

[0076] Implementation method three: Figure 3 、 Figure 4 As shown, 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 partition rib 8 protruding and extending toward the other, so as to divide 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, and the partition rib 8 constitutes the cavity wall of the liquid inlet chamber 3. 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.

[0077] As a preferred embodiment of the third embodiment, Figure 6 As shown, the separating rib 8 is formed with raised portions 81 and recessed portions 82 with alternating radius lengths, and adjacent recessed portions 82 form a buffer space at the position of the raised portion 81. After the liquid enters the liquid inlet chamber 3, it contacts and collides with the recessed portions 82 and disperses to both sides, and further collides in the buffer space, thereby reducing the kinetic energy of the liquid and thus reducing the vibration caused by the impact of the liquid. At the same time, the recessed portion constitutes a collision structure. Under the action of the water flow, the tumbling spoiler 5 contacts the recessed portion 82 to achieve irregular movement within the liquid inlet chamber 3. The setting of the recessed portion 82 allows the tumbling spoiler 5 to continuously contact and collide with the recessed portion 82 under the impact of the water flow, and does not perform irregular movement, so that the liquid collides with the tumbling spoiler 5 more fully.

[0078] As a preferred embodiment of the third 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.

[0079] 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.

[0080] 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.

[0081] like Figure 6As shown, the one-way conducting member can be a piston plate 71 covering the second liquid circulation hole 12. When water flows from the first liquid circulation hole 11 into the extrusion chamber 15, the piston plate 71 is sealed due to the negative pressure in the extrusion chamber 15. When the water flows from the extrusion chamber 15 through the second liquid circulation hole 12 to the liquid outlet chamber 4, the impact of the water flow will open the piston plate 71 to allow water to flow. Specifically, the piston plate 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 plate 71 to the piston plate 7. The sealing portion 712 is provided in correspondence with the second liquid circulation hole 12 to seal it.

[0082] As a preferred example under this embodiment, Figure 3 and 5 As shown, the piston plate 7 is provided with a partition extending toward the elastic pad 10 to divide the extrusion chamber 15 into a plurality of pressurized chambers, and the diaphragm head 9 is provided with a plurality of pressurized chambers corresponding to the pressurized chambers. In this preferred example, each pressurized chamber is provided with two second liquid flow holes 12 for rapid drainage; in this design, Figure 6 As shown, the middle part of the piston plate 71 serves as a positioning portion 711, and specifically a positioning column structure can be integrally extended. A blind hole is provided on the piston plate 7 between the two second liquid circulation holes 12 of each pressurized chamber for inserting the positioning column. Both ends of the piston plate 71 serve as sealing portions 712 to seal the two second liquid circulation holes 12 respectively.

[0083] 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.

[0084] 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.

[0085] As a preferred example under this embodiment, Figure 3 、 Figure 4As shown, the tumbling spoiler 5 is disposed in the liquid inlet cavity 3, and the inner wall of the pump head used to enclose the liquid inlet cavity 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 is formed between the tumbling spoiler 5 and the liquid inlet 1. Since the tumbling spoiler 5 may be displaced when impacted by liquid, thereby blocking the liquid inlet 1, reducing the liquid inlet space of the liquid inlet 1, or even completely blocking 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.

[0086] 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.

[0087] 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.

[0088] 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.

[0089] This application does not limit the material used to form the tumble spoiler 5; the tumble spoiler 5 can be made of a flexible material. This configuration allows the tumble spoiler 5 to undergo partial elastic deformation upon impact with the liquid. This allows the tumble spoiler 5 to convert more of the liquid's kinetic energy into the elastic potential energy required for its own deformation, thereby increasing the tumble spoiler's ability to absorb the liquid's kinetic energy and thereby improving its ability to reduce the liquid's kinetic energy. The tumble spoiler 5 can also be made of a rigid material.

[0090] 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.

[0091] 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.

[0092] When the diaphragm pump of this embodiment is installed and in use, the liquid inlet chamber 3 and the extrusion chamber 15 are arranged horizontally, the liquid inlet 1 is located below the liquid inlet chamber 3, and the tumbling spoiler 5 is located above the liquid inlet 1 under the action of gravity. When the incoming water flows into the liquid inlet chamber 3 from the liquid inlet 1, it impacts the tumbling spoiler 5 from bottom to top, causing the tumbling spoiler 5 to start the turbulent flow action in the liquid inlet chamber 3 from bottom to top.

[0093] When the diaphragm pump is in a horizontal position, the tumbling spoiler 5 falls just above the water inlet 1 under the action of gravity. When the diaphragm pump is working, the water at the water inlet 1 moves upward under the action of pressure, overcoming the gravity of the tumbling spoiler 5 and impacting the tumbling spoiler 5. At the same time, the water flow also has to overcome its own gravity, and part of its kinetic energy is converted into gravitational potential energy, which is more conducive to the consumption of water kinetic energy, thereby achieving the effect of reducing the impact of water flow on the pump casing.

[0094] When the diaphragm pump is in a horizontal position, the first liquid flow hole 11 and the liquid inlet 1 form a right-angle turn of the water flow, and the water in the liquid inlet chamber 3 that has undergone turbulence flows horizontally from the first liquid flow hole 11 into the extrusion chamber 15 .

[0095] A water purifier adopts the above-mentioned 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 periphery of the liquid inlet cavity 3, and then flows out of the diaphragm pump from the upper liquid outlet 4.

[0096] 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 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.

[0097] Anything not described in this application can be achieved by adopting or drawing on existing technologies.

[0098] 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.

[0099] 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 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: It also includes a tumbling spoiler arranged in the liquid inlet cavity and / or the liquid outlet cavity. The tumbling spoiler can roll in the liquid inlet cavity and / or the liquid outlet cavity under the impact of the water flow and disturb the water flow.

2. The diaphragm pump according to claim 1, characterized in that The tumbling spoiler is at least one spoiler sphere. When the tumbling spoiler is arranged in the liquid inlet cavity, 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.

3. The diaphragm pump according to claim 2, characterized in that The liquid inlet cavity has a cavity wall surrounding the tumbling spoiler, and the cavity wall has convex parts and concave parts with alternating radius lengths, so that the cavity wall of the liquid inlet cavity forms a plurality of buffer spaces to buffer and reduce the pressure of the water flow.

4. The diaphragm pump according to claim 1, characterized in that The volume of the liquid inlet chamber is V1, the volume of the tumbling spoiler is V2, and the volume of the liquid outlet chamber is V3. The liquid inlet chamber and / or the liquid outlet chamber have a turbulent flow space for the tumbling spoiler to move, and the turbulent flow space is greater than or equal to the volume V2 of the tumbling spoiler, that is, V1-V2≥V2, and / or V3-V2≥V2.

5. The diaphragm pump according to claim 4, characterized in that The tumbling spoiler forms a zigzag motion in the spoiler space, the maximum motion stroke of the single-line motion in the zigzag motion is greater than the radius length of the tumbling spoiler, the ratio range of V1:V2 is 4-20; and / or the ratio range of V3:V2 is 4-20.

6. The diaphragm pump according to claim 4, characterized in that When the tumbling spoiler is provided in the liquid inlet cavity, the volume V3 of the liquid outlet cavity is greater than or equal to the volume of the spoiler space, that is, V3 ≥ V1 - V2; When the tumbling spoiler is provided in the liquid outlet cavity, the volume of the spoiler space is greater than or equal to the volume V1 of the liquid inlet cavity, that is, V3-V2≥V1; When the tumbling spoiler is provided in both the liquid inlet cavity and the liquid outlet cavity, the volume of the spoiler space in the liquid outlet cavity is greater than or equal to the volume of the spoiler space in the liquid inlet cavity, that is, V3-V2≥V1-V2.

7. The diaphragm pump according to any one of claims 1 to 6, characterized in that: When the diaphragm pump is installed and used, the liquid inlet cavity and the extrusion cavity are arranged transversely, the liquid inlet is located below the liquid inlet cavity, and the tumbling spoiler is located above the liquid inlet under the action of gravity.

8. The diaphragm pump according to claim 7, characterized in that The liquid inlet cavity has a longitudinal connecting wall, and a flow port connected to the extrusion cavity is provided on the connecting wall. The flow port and the liquid inlet form a right-angle turn of the water flow, and the water flow in the liquid inlet cavity that has passed through the turbulent flow flows horizontally into the extrusion cavity from the flow port.

9. The diaphragm pump according to claim 1, characterized in that The pump head includes a front cover and a piston plate, at least one of the front cover and the piston plate is provided with a dividing rib protruding and extending toward the other to form a cavity wall of the liquid inlet cavity, and the cavity wall divides 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.

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

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