Water inlet and outlet structure of diaphragm booster pump, pump head and diaphragm booster pump

Abstract

A water inlet and outlet structure of a booster pump is characterized in that according to a diaphragm booster pump, source water enters from a water inlet and enters at least two water inlet holes through a second water inlet cavity at the same time, the source water entering the water inlet holes enters a first water inlet cavity through a water inlet flow channel, and when the price of a working cavity is increased, the source water enters the first water inlet cavity through the water inlet flow channel; water in the first water inlet cavity flows into the working cavity to finish water absorption; when the size of the working cavity is reduced, water in the working cavity is discharged to the first water outlet cavity and discharged to the water outlet holes, pressurized water is collected to the second water outlet cavity through the at least two water outlet holes, and high-pressure water in the second water outlet cavity is discharged out of the pump head through the water outlet, so that a connecting pipeline is simplified, and the working efficiency is improved. The size and the leakage risk are reduced.

Description

Technical Field

[0001] The present application relates to the technical field of water treatment, and specifically relates to an inlet and outlet structure, a pump head and a diaphragm booster pump of a diaphragm booster pump. Background Art

[0002] The working principle of a diaphragm booster pump is that the periodic movement of a diaphragm causes a change in volume, driving a rubber valve to periodically close and open the inlet and outlet on the valve seat to achieve pressurization.

[0003] Traditional diaphragm booster pumps, such as Figure 1 and Figure 2 shown, the key components include a motor, an eccentric wheel, three pendulum wheels, a diaphragm divided into three piston actuation areas, three pistons, a piston chamber containing three groups of water inlets and one group of water outlets, three inlet check valves, one drain check valve, a pump head cover containing an inlet hole and a drain hole, and separated inlet water flow channels and drain water flow channels. Among them, a raw water chamber is formed between the inlet water flow channel of the pump head cover and the piston chamber, a high-pressure water chamber is formed between the drain water flow channel of the pump head cover and the piston chamber, and three independent pressurized water chambers are formed between the piston chamber and the diaphragm.

[0004] When the motor rotates, it will drive the eccentric wheel to rotate. Since the pendulum wheels are restricted from rotating, the three pendulum wheels can only sequentially generate axial reciprocating motions. The three piston actuation areas of the diaphragm will perform synchronous axial expansion-compression motions under the axial reciprocating motions of the pendulum wheels. When the piston actuation area of the diaphragm moves in the expansion direction, the inlet check valve opens, and the source water is sucked into the pressurized water chamber from the water inlet. When the piston actuation area of the diaphragm moves in the compression direction, the drain check valve opens, and the pressurized water is pressed out, enters the high-pressure water chamber from the water outlet, and is discharged out of the pump through the drain hole of the pump head cover to provide the required high-pressure water.

[0005] The disadvantages of the above diaphragm booster pump are as follows: During the working process, the three pendulum wheels will alternately push the diaphragm, continuously applying a force in the same direction. When the rotational speed of the motor shaft is as high as 700 - 1200 rpm, due to the extremely large vibration generated by the alternating actuation of the three pendulum wheels, relatively large noise is generated. In addition, the flow rate of the above diaphragm booster pump is small. To increase the flow rate, it is necessary to increase the motor speed or increase the volume of the pump body. However, increasing the motor speed will cause the vibration and noise problems to be more serious, and increasing the volume will make it difficult for the booster pump to be installed in cooperation with existing equipment.

[0006] In order to solve the vibration problem of the diaphragm caused by the axial force in the above booster pump, a booster pump structure that uses multiple eccentric wheels to simultaneously apply opposite radial forces to a group of fan-shaped pressurized chambers has emerged. By canceling out the radial forces with each other, the vibration and noise are reduced and the flow rate is increased. However, in the manufacturing process of the fan-shaped pressurized chamber structure, there are difficulties such as a complex mold opening process and high manufacturing difficulty, and the vibration cannot be completely eliminated. Summary of the Invention

[0007] To reduce the manufacturing difficulty of the booster pump and further eliminate vibration, the present application provides an inlet and outlet structure of a booster pump, which is characterized in that the diaphragm booster pump includes:

[0008] Source water enters from the water inlet, and simultaneously enters at least two water inlet holes through the second water inlet cavity. The source water entering the water inlet holes enters the first water inlet cavity through the water inlet flow channel. When the volume of the working cavity increases, the water in the first water inlet cavity flows into the working cavity to complete water absorption;

[0009] When the volume of the working cavity decreases, the water in the working cavity is discharged to the first water outlet cavity. The water in the working cavity is discharged through this to the water outlet hole, and the pressurized water is collected to the second water outlet cavity through the at least two water outlet holes. The high-pressure water in the second water outlet cavity is discharged from the water outlet of the pump head.

[0010] According to the first aspect of the present application, there is provided a pump head of a diaphragm booster pump,

[0011] The pump head includes:

[0012] A transmission component, including,

[0013] A drive shaft;

[0014] An eccentric component, connected to the drive shaft and rotating under the drive of the drive shaft;

[0015] A pendulum wheel component, connected to the eccentric component, and the rotation of the eccentric component drives the pendulum wheel component to swing radially along the drive shaft;

[0016] Four rectangular pressurizing components, connected to the transmission component and arranged pairwise opposite along the axis of the drive shaft. The pressurizing components include,

[0017] A piston chamber, on the inner wall of which at least one pressurizing cavity is provided;

[0018] A diaphragm, enclosing the piston chamber to form the at least one pressurizing cavity;

[0019] The swing of the pendulum wheel component drives the diaphragm to deform radially along the drive shaft, so that the at least one pressurizing cavity expands or compresses in the radial direction.

[0020] According to some embodiments of the present application, the eccentric components have a phase difference of 180° during rotation, and the generated eccentric forces cancel each other out and the torques are balanced.

[0021] According to some embodiments of the present application, the eccentric assembly includes a first eccentric wheel, a second eccentric wheel, and a third eccentric wheel arranged in sequence along the drive shaft; the eccentricities of the third eccentric wheel and the first eccentric wheel are the same; the eccentricity of the second eccentric wheel is opposite to that of the first eccentric wheel.

[0022] According to some embodiments of the present application, during the swinging process of the pendulum wheel assembly, the resultant force of the radial eccentric forces along the drive shaft is zero and the resultant moment is balanced.

[0023] According to some embodiments of the present application, the pendulum wheel assembly includes:

[0024] A first pendulum wheel connected to the first eccentric wheel;

[0025] A second pendulum wheel connected to the second eccentric wheel;

[0026] A third pendulum wheel connected to the third eccentric wheel;

[0027] The swinging direction of the third pendulum wheel is the same as that of the first pendulum wheel; the swinging direction of the second pendulum wheel is opposite to that of the first pendulum wheel.

[0028] According to some embodiments of the present application, the at least one pressurizing chamber includes:

[0029] A first pressurizing chamber, in which the first pendulum wheel drives the diaphragm to deform for radial expansion or compression;

[0030] A second pressurizing chamber, in which the second pendulum wheel drives the diaphragm to deform for radial expansion or compression;

[0031] A third pressurizing chamber, in which the third pendulum wheel drives the diaphragm to deform for radial expansion or compression.

[0032] According to some embodiments of the present application, the third pressurizing chamber and the first pressurizing chamber expand or compress synchronously; the second pressurizing chamber compresses or expands in the opposite direction to the first pressurizing chamber.

[0033] According to some embodiments of the present application, when the thinner parts of the first eccentric wheel and the third eccentric wheel rotate to the corresponding first pendulum wheel and third pendulum wheel, the deformation areas of the diaphragms corresponding to the first pendulum wheel and the third pendulum wheel are at the near-axis positions, and the volumes of the first pressurizing chamber and the third pressurizing chamber are the largest; the eccentricity position of the second eccentric wheel is opposite to that of the first eccentric wheel and the third eccentric wheel. At the same time, when the thinner part of the second eccentric wheel rotates to the position of the second pendulum wheel, the deformation area of the corresponding diaphragm is at the near-axis position, and the volume of the second pressurizing chamber is the largest.

[0034] According to some embodiments of the present application, when the thick portions of the first eccentric wheel and the third eccentric wheel rotate to the corresponding first pendulum wheel and third pendulum wheel, the deformation regions of the diaphragm corresponding to the first pendulum wheel and the third pendulum wheel are at the position far from the axis, and the volumes of the first pressurizing chamber and the third pressurizing chamber are the smallest; at the same time, the thick portion of the second eccentric wheel rotates to the position of the second pendulum wheel, and the deformation region of the corresponding diaphragm is at the position far from the axis, and the volume of the second pressurizing chamber is the smallest.

[0035] According to some embodiments of the present application, the at least one pressurizing chamber of the four rectangular pressurizing components expands or compresses sequentially.

[0036] According to some embodiments of the present application, for each rotation of the drive shaft, the at least one pressurizing chamber completes one expansion and compression cycle.

[0037] According to some embodiments of the present application, the pump head further includes:

[0038] A first end cover disposed at one end of the transmission component;

[0039] An inlet end disposed on the first end cover;

[0040] An outlet end disposed on the first end cover.

[0041] According to some embodiments of the present application, the piston chamber further includes:

[0042] An inlet chamber connected to the inlet end;

[0043] An outlet chamber connected to the outlet end.

[0044] According to some embodiments of the present application, when the diaphragm expands radially along the drive shaft, the inlet check valve of the at least one pressurizing chamber opens, and the source water is sucked into the at least one pressurizing chamber; when compressed radially along the drive shaft, the outlet check valve of the at least one pressurizing chamber opens, and the pressurized water is discharged.

[0045] According to another aspect of the present application, there is also provided a diaphragm booster pump including the pump head of the above diaphragm booster pump.

[0046] According to another aspect of the present application, there is also provided a water treatment device including: the above diaphragm booster pump.

[0047] The pump head of the diaphragm booster pump provided by this application completely changes the axial deformation of the diaphragm into radial deformation, realizes pressurization through the radial deformation of the diaphragm, effectively increases the deformation area of the diaphragm, and improves the flow rate of the diaphragm booster pump; on this basis, the structural forms of the piston chamber and the pressurization chamber are further improved, greatly reducing the requirements for the mold, simplifying the manufacturing process, and arranging the water inlet end and the water outlet end at one end of the pump head, thus making the product structure more compact; in addition, by setting three eccentric wheels and three swing wheels, the pump head reaches a dynamic balance state with a balanced resultant torque, further reducing vibration and noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] In order to more clearly illustrate the technical solutions of this application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of this application. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without exceeding the scope of protection required by this application.

[0049] Figure 1 is a schematic diagram of a traditional diaphragm booster pump.

[0050] Figure 2 is an exploded view of a traditional diaphragm booster pump.

[0051] Figure 3 is a schematic diagram of a diaphragm booster pump according to an exemplary embodiment of this application.

[0052] Figure 4 is an exploded view of a diaphragm booster pump according to an exemplary embodiment of this application.

[0053] Figure 5 is an exploded view of the transmission components according to an exemplary embodiment of this application.

[0054] Figure 6 is a schematic diagram of an eccentric assembly according to an exemplary embodiment of this application.

[0055] Figure 7 is a schematic diagram of a swing wheel assembly according to an exemplary embodiment of this application.

[0056] Figure 8 is an exploded view of the pressurization components according to an exemplary embodiment of this application.

[0057] Figure 9 is a schematic diagram of a piston chamber according to an exemplary embodiment of this application.

[0058] Figure 10 is a schematic diagram of a diaphragm according to an exemplary embodiment of this application.

[0059] Figure 11 is a schematic diagram of an adapter according to an exemplary embodiment of this application.

[0060] Figure 12 It is a schematic diagram of the first end cap according to an exemplary embodiment of the present application.

[0061] Figure 13 It is a schematic diagram of the base according to an exemplary embodiment of the present application.

[0062] Figure 14 It is a schematic diagram of the pump head of the diaphragm booster pump according to an exemplary embodiment of the present application.

[0063] Figure 15 It is an exploded view of the pump head of the diaphragm booster pump according to an exemplary embodiment of the present application.

[0064] Figure 16 It is a schematic diagram of the transmission assembly according to an exemplary embodiment of the present application.

[0065] Figure 17 It is a schematic diagram of the eccentric assembly according to an exemplary embodiment of the present application.

[0066] Figure 18 It is a schematic diagram of the oscillating wheel assembly according to an exemplary embodiment of the present application.

[0067] Figure 19 It is a schematic diagram of the oscillating wheel according to an exemplary embodiment of the present application.

[0068] Figure 20 It is a schematic diagram of the oscillating wheel according to an exemplary embodiment of the present application.

[0069] Figure 21 It is a schematic diagram of the diaphragm according to an exemplary embodiment of the present application.

[0070] Figure 22 It is an exploded view of the boosting component according to an exemplary embodiment of the present application.

[0071] Figure 23 It is a schematic diagram of the slider according to an exemplary embodiment of the present application.

[0072] Figure 24 It is a schematic diagram of the slider according to an exemplary embodiment of the present application.

[0073] Figure 25 It is a schematic diagram of the connection structure between the diaphragm and the slider according to an exemplary embodiment of the present application.

[0074] Figure 26 It is a schematic diagram of the water inlet and outlet structure according to an exemplary embodiment of the present application.

[0075] Figure 27 It is a cross-sectional view of the water inlet and outlet structure according to an exemplary embodiment of the present application.

[0076] Figure 28It is a schematic diagram of the first end cap according to an exemplary embodiment of the present application. Detailed implementation manners

[0077] Exemplary embodiments will be described more fully hereinafter with reference to the accompanying drawings. However, the exemplary embodiments can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. These embodiments are provided so that this application will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. Like reference numerals refer to like or similar parts throughout the figures, and thus their repetitive description will be omitted.

[0078] In addition, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of the embodiments of this application. However, those skilled in the art will realize that the technical solutions of this application can be practiced without one or more of the specific details, or other methods, components, devices, steps, etc. may be used. In other cases, well-known methods, devices, implementations, or operations are not shown or described in detail to avoid obscuring aspects of this application.

[0079] It should be understood that although terms such as first and second may be used herein to describe various components, these components should not be limited by these terms. These terms are used to distinguish one component from another. Thus, the first component discussed below may be referred to as the second component without departing from the teachings of the concept of this application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0080] Those skilled in the art can understand that the drawings are only schematic diagrams of the exemplary embodiments and may not be to scale. The modules or processes in the drawings are not necessarily essential for implementing this application, and thus cannot be used to limit the protection scope of this application.

[0081] In order to solve the problem of vibration of the diaphragm in the existing booster pump caused by the axial force, a booster pump structure that uses multiple eccentric wheels to simultaneously apply opposite radial forces to the booster chamber has emerged, and the vibration and noise are reduced by the mutual cancellation of the radial forces. The inventor of the present application found that in the above structure, the structures of the piston chamber and the booster chamber are paired fan-shaped blocks, which have high requirements for the mold, a complex mold opening process, and a large manufacturing process difficulty; moreover, the vibration cannot be completely eliminated.

[0082] Therefore, the present application intends to provide a pump head of a new type of diaphragm booster pump. On the one hand, through structural improvement, the difficulty in the manufacturing process is reduced, making the product structure more compact; on the other hand, on the basis of the product structure improvement, multiple radial forces reach a dynamic balance state, thereby completely eliminating vibration. The technical solutions of the present application will be introduced in detail below with reference to the accompanying drawings.

[0083] Figure 3 is a schematic diagram of a diaphragm booster pump according to an exemplary embodiment of the present application; Figure 4 is an exploded view of a diaphragm booster pump according to an exemplary embodiment of the present application.

[0084] As Figure 3 and Figure 4 shown, the pump head 1000 of the diaphragm booster pump provided by the present application includes a transmission component 100, a base body 200, four rectangular boosting components 300, and a first end cover 400. Among them, the base body 200 is the main structure of the pump head 1000, the transmission component 100 is arranged inside the base body 200, and the four rectangular boosting components 300 are arranged around the base body 200; the first end cover 400 is arranged at one end of the base body 200.

[0085] Compared with Figure 1 and Figure 2 the pump head of the traditional diaphragm booster pump in, the pump head 1000 of the diaphragm booster pump provided by the present application is improved from a cylindrical structure to a rectangular structure in terms of structure. The four rectangular boosting components 300 are arranged in pairs opposite to each other along the axis of the transmission component 100 (i.e., the axis of the pump head 1000). As Figure 4 can be seen, the basic shape of the boosting component 300 is rectangular. Compared with the annular and sector-shaped boosting components, the requirements for the mold are reduced during the manufacturing process, the mold opening process is simpler, and the manufacturing process is more simplified.

[0086] Figure 5 is an exploded view of the transmission component according to an exemplary embodiment of the present application; Figure 6 is a schematic diagram of an eccentric component according to an exemplary embodiment of the present application; Figure 7 is a schematic diagram of a pendulum wheel component according to an exemplary embodiment of the present application.

[0087] As Figure 5 shown, the transmission assembly 100 includes a drive shaft 110, an eccentric component 120, a pendulum wheel component, a set of bearings 140, and a second end cover 150. Among them, the eccentric component 120 can be a set of eccentric bushings, which are connected to the drive shaft 110 and rotate with the drive shaft 100. As Figure 6 shown, the eccentric component 120 includes a first eccentric wheel 121, a second eccentric wheel 122, and a third eccentric wheel 123 arranged in sequence along the drive shaft 110. The eccentricity of the third eccentric wheel 123 is the same as that of the first eccentric wheel 121; the eccentricity of the second eccentric wheel 122 is opposite to that of the first eccentric wheel 121, that is, the phase difference is 180°. Since during the rotation of the eccentric component 120, the phase difference between the second eccentric wheel 122 and the first eccentric wheel 121 and the third eccentric wheel 122 is 180°, the generated eccentric forces cancel each other out and the torque is balanced, thereby further eliminating vibration.

[0088] As shown in Figure 5 and Figure 7 shown, the balance wheel assembly 130 is connected to the eccentric assembly 120 through a set of bearings 140. The rotation of the eccentric assembly 120 drives the balance wheel assembly 130 to swing radially along the drive shaft 110. The balance wheel assembly 130 sequentially includes a first balance wheel 131, a second balance wheel 132, and a third balance wheel 133 along the drive shaft 110. Among them, the first balance wheel 131 is connected to the first eccentric wheel 121; the second balance wheel 132 is connected to the second eccentric wheel 122; the third balance wheel 133 is connected to the third eccentric wheel 123. The swinging direction of the third balance wheel 133 is the same as that of the first balance wheel 131; the swinging direction of the second balance wheel 132 is opposite to that of the first balance wheel 131, that is, the phase difference is 180°. According to the exemplary embodiment of the present application, the first balance wheel 131 and the third balance wheel 133 can be small balance wheels, and the second balance wheel 132 can be a large balance wheel. Since the swinging assembly 130 has a phase difference of 180° between the second balance wheel 132 and the first balance wheel 131 and the third balance wheel 132 during the swinging process, the radially generated eccentric forces cancel each other out and the torque is balanced, thereby further eliminating vibration.

[0089] During the rotation process of the eccentric assembly, the phase difference is 180°, that is, the phase angle difference is 180°, and the generated eccentric forces cancel each other out and the torque is balanced.

[0090] The eccentric assembly includes a first eccentric wheel, a second eccentric wheel, and a third eccentric wheel arranged in sequence along the drive shaft; that is, the eccentric distances are equal and the eccentric directions are the same; the eccentricity of the second eccentric wheel is opposite to that of the first eccentric wheel, that is, the eccentric distances are equal and the eccentric directions are opposite.

[0091] During the swinging process of the balance wheel assembly, the resultant force of the radial eccentric forces along the drive shaft is zero and the resultant torque is balanced.

[0092] The balance wheel assembly includes:

[0093] A first balance wheel, connected to the first eccentric wheel;

[0094] A second balance wheel, connected to the second eccentric wheel;

[0095] A third balance wheel, connected to the third eccentric wheel;

[0096] The swinging direction of the third balance wheel is the same as that of the first balance wheel; the swinging direction of the second balance wheel is opposite to that of the first balance wheel; that is, the swinging direction of the second balance wheel is the same as that of the first balance wheel, and the phase angle difference is 180°.

[0097] As shown in Figure 7As shown, a set of swing arms 134 are respectively and fixedly arranged on the first balance wheel 131, the second balance wheel 132 and the third balance wheel 133. During the swinging process of the balance wheel assembly 130, the swing arms 134 are connected to the diaphragm through the adapter in the pressurizing component, driving the diaphragm to deform radially, so as to expand or compress.

[0098] Figure 8 is an exploded view of the pressurizing component according to an exemplary embodiment of the present application; Figure 9 is a schematic diagram of the piston chamber according to an exemplary embodiment of the present application; Figure 10 is a schematic diagram of the diaphragm according to an exemplary embodiment of the present application; Figure 11 is a schematic diagram of the adapter according to an exemplary embodiment of the present application.

[0099] As Figure 8 shown, each pressurizing component 300 includes a piston chamber 310, a diaphragm 320, an adapter 330, a sealing ring 340, a housing 350, a set of inlet check valves 360 and a set of outlet check valves 370. Among them, at least one pressurizing chamber is arranged on the inner wall of the piston chamber 310. The diaphragm 320 and the piston chamber 310 are enclosed to form the at least one pressurizing chamber. The housing 350 and the sealing ring 340 are used to accommodate the piston chamber 310 and seal it. The diaphragm 320 is connected to the balance wheel assembly through the adapter 330. The swinging of the balance wheel assembly drives the diaphragm 320 to deform radially along the driving shaft through the adapter 330, so that the at least one pressurizing chamber expands or compresses radially. The piston chamber 310 and the diaphragm 320 can be integral or assembled.

[0100] As Figure 9 shown, an inlet chamber 311, an outlet chamber 312 and at least one pressurizing chamber are arranged on the piston chamber 310, which are formed by the diaphragm closely adhering to and enclosing the inner wall of the piston chamber 310. According to the exemplary embodiment of the present application, the at least one pressurizing chamber includes a first pressurizing chamber 313, a second pressurizing chamber 314 and a third pressurizing chamber 315. The first pressurizing chamber 313 and the third pressurizing chamber 315 are small pressurizing chambers, and the second pressurizing chamber 314 is a large pressurizing chamber. The inlet chamber 311 and the outlet chamber 312 are arranged at one end of the piston chamber 310. An inlet 316 and an outlet 317 are arranged in each pressurizing chamber, and an inlet check valve 360 and an outlet check valve 370 are respectively configured.

[0101] As Figure 10 shown, the diaphragm 320 includes a first deformation zone 323, a second deformation zone 324 and a third deformation zone 325, which respectively correspond to Figure 9 the first pressurizing chamber 313, the second pressurizing chamber 314 and the third pressurizing chamber 315 therein. A set of protrusions 326 are arranged on each deformation zone of the diaphragm 320. The protrusions 326 are connected to the swing arms of the balance wheel through the adapter. Thus, Figure 9 the first pressurizing chamber 313 inFigure 7 The first balance wheel 131 in Figure 10 drives the first deformation area 323 of the diaphragm 320 in Figure 7 to deform, thereby performing radial expansion or compression; the second pressure increasing chamber 314 is driven by Figure 10 the second balance wheel 132 in Figure 7 to drive the second deformation area 324 of the diaphragm 320 in Figure 10 to deform, thereby performing radial expansion or compression; the third pressure increasing chamber 315 is driven by

[0102] As Figure 8 and Figure 11 shown, the adapter 330 includes a first small adapter, a large adapter, and a second small adapter. One end of the first small adapter is connected to Figure 10 the protrusion 326 of the first deformation area 323 of the diaphragm 320 in Figure 7 and the other end is connected to the swing arm 134 of the first balance wheel 131 in Figure 10 ; one end of the large adapter is connected to Figure 7 the protrusion 326 of the second deformation area 324 of the diaphragm 320 in Figure 10 and the other end is connected to the swing arm 134 of the second balance wheel 132 in Figure 7 ; one end of the second small adapter is connected to

[0103] Figure 5 the protrusion 326 of the third deformation area 325 of the diaphragm 320 in Figure 8 and the other end is connected to the swing arm 134 of the third balance wheel 133 in

[0104] Figure 12 is a schematic diagram of the first end cover according to an exemplary embodiment of the present application; Figure 13 is a schematic diagram of the base according to an exemplary embodiment of the present application.

[0105] As Figure 12As shown, a water inlet end 411 and a water outlet end 412 are provided on the first end cover 410. A first water outlet 201 and a first water inlet 202 are provided on the end face of the base body 200, which are respectively connected to the water outlet end 412 and the water inlet end 411 of the first end cover 410 after assembly. Second water inlets 203 and second water outlets 204 are respectively provided on the four side faces of the base body 200, which are respectively connected to the water inlet chamber and the water outlet chamber of the piston chamber after assembly, thereby forming water inlet and outlet channels. During the working process, raw water enters from the water inlet end 411 of the first end cover 410, and a water inlet channel is formed through the first water inlet 202 and the second water inlet 203 on the base body 200; then it passes through Figure 9 the water inlet of the piston chamber 310 in Figure 9 into the water inlet chamber 311, and enters the pressurizing chamber 313 and / or the pressurizing chamber 314 and / or the pressurizing chamber 315 through the water inlet of the pressurizing chamber equipped with a water inlet check valve; the pressurized water enters the water outlet chamber 312 from the water outlet of the pressurizing chamber equipped with a water outlet check valve. The pressurized water flows into the water outlet channel formed by the second water outlet hole 204 and the first water outlet 201 of the base body 200 through the water outlet of the water outlet chamber 312, and finally is discharged from the water outlet end 412 of the first end cover 410. For the pump head provided in this application, the water inlet end and the water outlet end are arranged at one end of the pump, making the product structure more compact.

[0106] As Figure 13 shown, first mounting holes 210, second mounting holes 220 and third mounting holes 230 are respectively provided on the four side faces of the base body 200, which are respectively used for mounting the first adapter, the second adapter and the third adapter of the pressurizing component. The base body 200 further includes a mounting seat 240, which is arranged at the end opposite to the first end cover. When the pump head is assembled, the transmission component is installed inside the base body and is connected and fixed to the second end cover of the transmission component through the mounting seat 240.

[0107] Refer to Figure 3 and Figure 4 , during the working process of the assembled pump head 1000, the eccentric rotation of the eccentric component 120 drives the oscillating wheel component 130 to perform a reciprocating radial movement. The oscillating wheel component is connected to the diaphragm 320 through the adapter 330. The reciprocating movement of the oscillating wheel component 130 causes the deformation area of the diaphragm 320 to perform a radial expansion movement or a compression movement. During the rotation of the eccentric component 120, the eccentric forces cancel each other out and the torque is balanced. The resultant radial eccentric force generated by the eccentric movement of the oscillating wheel component 130 is zero and the resultant torque is balanced. Each pressurizing chamber of the four rectangular pressurizing components 300 sequentially performs an expansion or compression movement. Each pressurizing chamber completes one expansion and compression cycle when the drive shaft 110 rotates one circle. The first oscillating wheel 131, the third oscillating wheel 133 and the second oscillating wheel 132 simultaneously deviate from or approach the axis of the drive shaft 110, and the forces generated in the radial direction cancel each other out, and the resultant force is zero.

[0108] For example, Figure 6When the thinner portions of the first eccentric wheel 121 and the third eccentric wheel 123 in [reference] rotate to Figure 4 the corresponding first pendulum wheel 131 and the third pendulum wheel 133 in [reference], the deformation regions of the diaphragm 320 corresponding to the first pendulum wheel 131 and the third pendulum wheel 133 are at positions close to the axis, and the volumes of the first pressurizing chamber and the third pressurizing chamber are the largest; the second eccentric wheel 122 has an eccentric position opposite to that of the first eccentric wheel 121 and the third eccentric wheel 123. At the same time, when the thinner portion of the second eccentric wheel 122 rotates to the position of the second pendulum wheel 132, the deformation region of the corresponding diaphragm 320 is at a position close to the axis, and the volume of the second pressurizing chamber is the largest.

[0109] Similarly, when the thicker portions of the first eccentric wheel 121 and the third eccentric wheel 123 rotate to the corresponding first pendulum wheel 131 and the third pendulum wheel 133, the deformation regions of the diaphragm 320 corresponding to the first pendulum wheel 131 and the third pendulum wheel 133 are at positions far from the axis, and the volumes of the first pressurizing chamber and the third pressurizing chamber are the smallest. At the same time, the thicker portion of the second eccentric wheel 122 rotates to the position of the second pendulum wheel 132, and the deformation region of the corresponding diaphragm 320 is at a position far from the axis, and the volume of the second pressurizing chamber is the smallest.

[0110] When the diaphragm 320 expands radially along the drive shaft 110, the intake check valve of the at least one pressurizing chamber opens, and source water is sucked into the at least one pressurizing chamber; when compressed radially along the drive shaft 110, the outlet check valve of the at least one pressurizing chamber opens, and the pressurized water is discharged.

[0111] According to another aspect of the present application, a diaphragm booster pump is provided, including the pump head of the above-mentioned diaphragm booster pump.

[0112] According to another aspect of the present application, a water treatment device is further provided, including the above-mentioned diaphragm booster pump.

[0113] The pump head of the diaphragm booster pump provided by the present application drives the balance wheel to produce radial reciprocating motion through the rotation of the eccentric component, so that the deformation direction of the diaphragm is radial. Compared with the traditional diaphragm booster pump, when the pump body volume and the motor speed remain unchanged, the radial deformation of the diaphragm can effectively increase the deformation area of the diaphragm, increase the volume variable of the boosting chamber, and thus increase the flow rate of the diaphragm booster pump. Secondly, the pump head of the diaphragm booster pump provided by the present application further improves the structural form of the piston chamber and the boosting chamber, greatly reduces the requirements for the mold, and simplifies the manufacturing process. Furthermore, the eccentric forces of the eccentric component offset each other and the torque is balanced during the rotation process, the first balance wheel, the third small balance wheel and the second balance wheel deviate from the axis of the motor shaft at the same time or move close to the axis at the same time, and the radial forces offset each other, the resultant force is zero and the resultant torque is balanced, which greatly reduces vibration and noise, and can achieve a relatively silent effect. In the pump head of the diaphragm booster pump provided by the present application, the water inlet and the water outlet are improved from the two ends of the pump to one end of the pump, so that the product structure is more compact.

[0114] Another embodiment of the present invention makes some changes in details compared with the first embodiment. The transmission unit of the pump head includes the eccentric assembly, the transmission assembly, a bearing, and a slider semi-fixed on the balance wheel assembly.

[0115] The balance wheel is provided with a guide rail, the slider is provided with a slide groove, and the guide rail and the slide groove are clearance-matched, so that the slider and the balance wheel slide relative to each other along the direction of the guide rail.

[0116] The diaphragm is provided with a plurality of diaphragm undercut groups, and the diaphragm undercuts are connected to the slider undercut grooves.

[0117] The slider includes a first slider, a second slider, and a third slider. The first slider is invertedly connected to the first inverted group of the diaphragm, the first slider slot is connected to the first balance wheel slide rail, the second slider is invertedly connected to the second inverted group of the diaphragm, the second slider slot is connected to the second balance wheel slide rail, the third slider is invertedly connected to the third inverted group of the diaphragm, and the third slider slot is connected to the third balance wheel slide rail.

[0118] The diaphragm undercut group cooperates with the undercut groove of the slider, and the fixing groove on the diaphragm cooperates with the fixing pin on the slider, so as to increase the relative motion force between the diaphragm and the slider.

[0119] The two boost chamber groups symmetrically arranged with the center point of the piston chamber as the center form a pair, that is, the boost chambers are arranged in pairs, and the center lines of the pair of boost chamber groups are on the same diameter line of the piston chamber.

[0120] At least 2 pairs, preferably 3 pairs or 6 pairs of the boost chamber groups perform expansion or compression movements.

[0121] The supercharging chamber group includes a first small supercharging chamber corresponding to the first pendulum wheel, a large supercharging chamber corresponding to the second pendulum wheel, and a second small supercharging chamber corresponding to the third pendulum wheel. The first small supercharging chamber and the second small supercharging chamber expand or compress synchronously; when the first small supercharging chamber and the second small supercharging chamber expand, the large supercharging chamber compresses; when the first small supercharging chamber and the second small supercharging chamber compress, the large supercharging chamber expands. In particular, the sum of the compression volumes of the first small supercharging chamber and the second small supercharging chamber is equal to the expansion volume of the large supercharging chamber, and vice versa, the sum of the expansion volumes of the first small supercharging chamber and the second small supercharging chamber is equal to the compression volume of the large supercharging chamber.

[0122] The part of the diaphragm in contact with the slider is the diaphragm deformation area, and the diaphragm deformation area deforms.

[0123] The pendulum wheel of the transmission assembly performs an eccentric rotational motion, driving the slider to perform a reciprocating radial motion. The slider slides relative to the pendulum wheel, and the slider drives the diaphragm to undergo a radial deformation, causing the supercharging chamber to expand or compress radially.

[0124] For each rotation of the motor shaft, each supercharging chamber of the supercharging chamber group completes an expansion and compression cycle.

[0125] The first pendulum wheel, the third pendulum wheel and the second pendulum wheel deviate from the axis of the motor shaft simultaneously or approach the axis simultaneously, and the forces they receive in the radial direction cancel each other out, and the resultant force is zero.

[0126] When the thin parts of the first eccentric wheel and the third eccentric wheel rotate to the pendulum wheels they are linked to, the pendulum wheels push the corresponding diaphragm deformation areas to be at the position near the center point of the piston chamber, and the volume of the small supercharging chamber corresponding to the small pendulum wheel is the largest; the second eccentric wheel has an eccentric position opposite to that of the first eccentric wheel and the third eccentric wheel. At this time, when the thin part of the second eccentric wheel rotates to the position of the second pendulum wheel it is linked to, the corresponding diaphragm deformation area is at the position near the center point of the piston chamber, and the volume of the supercharging chamber is the largest.

[0127] When the thick parts of the first eccentric wheel and the third eccentric wheel rotate to the first pendulum wheel and the second pendulum wheel they are linked to, the diaphragm deformation areas corresponding to the pendulum wheels are at positions far from the center point of the piston chamber, and the volume of the supercharging chamber is the smallest; at the same time, when the thick part of the second eccentric wheel rotates to the position of the second pendulum wheel it is linked to, the corresponding diaphragm deformation area is at a position far from the center point of the piston chamber, and the volume of the supercharging chamber is the smallest.

[0128] The diaphragm includes at least one diaphragm or multiple diaphragm components, and the multiple diaphragm components are joined together to form the diaphragm.

[0129] When the diaphragm moves in the expansion direction, the water inlet check valve opens, the water outlet check valve closes, and the source water is sucked into the pressurizing chamber; when the diaphragm moves in the compression direction, the water inlet check valve closes, the water outlet check valve opens, and the pressurized water is discharged.

[0130] The piston chamber includes at least one piston chamber assembly, and a plurality of piston chamber assemblies are assembled to form the piston chamber.

[0131] The diaphragm or the piston chamber is integral or assembled.

[0132] The diaphragm sheet is closely attached to the inner wall of the piston chamber, and forms a water outlet cavity, the pressure-boosting cavity, and a water inlet cavity through sealing.

[0133] The diaphragm undercut group cooperates with the slider undercut groove, so that the diaphragm and the slider are relatively fixed, and the fixing groove on the diaphragm cooperates with the fixing pin on the slider, which increases the relative motion force between the diaphragm and the slider, making it difficult for the diaphragm and the slider to rub against each other;

[0134] The guide rail on the balance wheel cooperates with the slide groove on the slider, so that the slider and the balance wheel can slide relative to each other along the direction of the guide rail.

[0135] The rotation of the eccentric component will drive the balance wheel to produce eccentric motion, and the balance wheel and the slider slide relative to each other, so that the eccentric motion of the balance wheel is converted into radial linear reciprocating motion, and then the diaphragm deformation direction is radial. Compared with the traditional diaphragm booster pump, the present invention maximizes the use of the pump head volume, obtains the maximum diaphragm motion area when the pump body volume remains unchanged, and increases the volume variable of the working chamber when the diaphragm reciprocating motion amplitude is the same, thereby increasing the flow rate of the diaphragm booster pump;

[0136] During the rotation of the eccentric component, the eccentric forces cancel each other out and the torque is balanced. The first balance wheel, the third balance wheel and the second balance wheel deviate from the axis of the motor shaft at the same time or move close to the axis at the same time. The radial forces cancel each other out, the resultant force is zero and the resultant torque is balanced, which greatly reduces vibration and noise, and can achieve a relatively quiet effect.

[0137] The buffer chamber is arranged in the boost chamber, which is a part of the space in the boost chamber. This part of the space increases as the pressure increases, and decreases as the pressure decreases. When the diaphragm moves upward, the boost chamber decreases, and the pressure in the boost chamber increases. The volume of the buffer chamber increases due to the increase in pressure, thereby delaying the increase in pressure in the boost chamber.

[0138] A plurality of buffer chambers are evenly arranged on the diaphragm. When the pressure in the working chamber increases instantaneously, the volume of the buffer chamber increases, slowing down the increasing trend of the pressure in the working chamber. When the pressure in the working chamber decreases instantaneously, the volume of the buffer chamber decreases, slowing down the decreasing trend of the pressure in the working chamber. This makes the pressure in the working chamber smoother during the working process, thereby reducing the pulsation of the outlet water pressure and reducing the influence of the pulsation of the outlet water pressure on the system pipeline.

[0139] The slider slides on the pendulum wheel to eliminate the tangential motion caused by the eccentric motion of the pendulum wheel, enabling the diaphragm to perform a reciprocating linear motion along the radial direction, improving the diaphragm life, reducing the friction loss, and enhancing the pump efficiency.

[0140] The motor shaft drives the eccentric component to rotate eccentrically. The eccentric rotation of the eccentric component drives the transmission component to perform eccentric motion. The transmission component is connected to the diaphragm through the slider. The slider and the pendulum wheel can slide relative to each other. The eccentric motion of the transmission component causes the slider to reciprocate along the diameter direction of the rotating shaft. The slider drives the deformation area of the diaphragm to perform a radial expansion motion or a compression motion. During the rotation of the eccentric component, the eccentric forces cancel each other out and the torque is balanced. The resultant force of the eccentric forces generated by the eccentric motion of the transmission component is zero and the resultant torque is balanced, so as to radially expand or compress the pressurizing chamber. When the deformation area of the diaphragm moves in the expansion direction, the inlet check valve opens, and the source water is sucked from the inlet chamber through the inlet into the pressurizing chamber; when the deformation area of the diaphragm moves in the compression direction, the outlet check valve opens, and the pressurized water is pressed out, enters the outlet chamber from the outlet, and is discharged from the outlet chamber.

[0141] Specifically, in another embodiment of the present invention, Figure 14 is a schematic diagram of the diaphragm booster pump of this embodiment, Figure 15 is an exploded view of the diaphragm booster pump according to the embodiment of the present application.

[0142] As Figure 14 shown, the pump head 1000 of the diaphragm booster pump of the pump embodiment includes a transmission component 100, a base body 200, four rectangular pressurizing components 300, and a first end cover 400. Among them, the base body 200 is the main structure of the pump head 1000. The transmission component 100 is arranged inside the base body 200. Four rectangular pressurizing components 300 are arranged around the base body 200; the first end cover 400 is arranged at one end of the base body 200.

[0143] Compared with Figure 3 and Figure 4 the embodiments in, in the diaphragm booster pump head 1000 provided in this embodiment, the eccentric wheel assembly 120, the pendulum wheel assembly 130, the diaphragm 320, and the adapter 330 have another implementation manner.

[0144] As Figure 16 shown, the transmission component 100 includes a drive shaft 110, an eccentric component 120, a pendulum wheel assembly 130, a bearing assembly 140, and a second end cover 150. Compared with Figure 6 in, the eccentric component 120 in this embodiment is three independent eccentric wheels. As Figure 17As shown, the eccentric assembly 120 includes a first eccentric wheel 121, a second eccentric wheel 122, and a third eccentric wheel 123. Figure 18 As shown, the balance wheel assembly 130 includes a first balance wheel 131 , a second balance wheel 132 , and a third balance wheel 133 .

[0145] like Figure 19 As shown, the first balance wheel 131 includes a slide rail 1311 and a slide surface 1312. The structure of the third balance wheel 133 is the same as that of the balance wheel 131.

[0146] like Figure 20 As shown, the second balance wheel 132 includes a slide rail 1321 and a slide surface 1322 .

[0147] like Figure 21 As shown, the diaphragm 320 includes a water inlet hole 321, a water outlet hole 322, a first deformation zone 323, a second deformation zone 324, a third deformation zone 325, a buffer cavity 327, a first inverted buckle group 3291, a second inverted buckle group 3292, a third inverted buckle group 3293, a first limiting groove 3281, a second limiting groove 3282, and a third limiting groove 3283.

[0148] like Figure 22 As shown, the slider 330 includes a first slider 331 , a second slider 332 , and a third slider 333 .

[0149] like Figure 23 As shown, the first slider 331 includes a limit pin 3311, an undercut groove 3312, a slide groove 3313 and a slide surface 3314. The third slider 333 has the same structure as the first slider 331.

[0150] like Figure 24 As shown, the second slider 332 includes a limiting pin 3321 , an undercut groove 3322 , a sliding groove 3323 and a sliding surface 3324 .

[0151] like Figure 25As shown, the first undercut group 3291 on the diaphragm 320 is buckled with the undercut groove 3312 on the first slider 331, so that the diaphragm 320 and the first slider 331 are fixed to each other. The first fixing groove 3291 on the diaphragm 320 and the limiting pin 3311 on the first slider 331 are interference fit, which increases the binding force between the diaphragm 320 and the first slider 331. Similarly, the second undercut group 3292 on the diaphragm 320 is buckled with the undercut groove 3322 on the second slider 332, and the second fixing groove 3292 on the diaphragm 320 and the limiting pin 3321 on the second slider 332 are interference fit; the third undercut group 3293 on the diaphragm 320 is buckled with the undercut groove 3332 on the third slider 333, and the third fixing groove 3293 on the diaphragm 320 and the limiting pin 3331 on the second slider 333 are interference fit.

[0152] like Figure 25 As shown, the slide groove 3313 on the first slider 331 and the slide rail 1311 on the first balance wheel 131 are in clearance fit, and the sliding surface 3314 on the first slider 331 and the sliding surface 1312 on the first balance wheel 131 are in contact with each other, so that the first slider 331 and the first balance wheel 131 can move relative to each other along the direction of the slide rail 1311. Similarly, the second slider 332 and the third slider 333 are respectively connected to the second balance wheel 132 and the third balance wheel 133 in the same manner.

[0153] like Figure 14 As shown, the advantage of this structure is that the slider 330 slides on the balance wheel 130, eliminating the tangential motion caused by the eccentric motion of the balance wheel 130, so that the diaphragm 320 can achieve radial straight-line reciprocating motion, thereby increasing the life of the diaphragm, reducing friction loss, and improving the efficiency of the water pump. In other words, the influence of the tangential motion on the diaphragm is eliminated, reducing the friction and wear of the diaphragm, greatly increasing the life of the diaphragm, preventing the risk of leakage caused by diaphragm wear, and improving the efficiency of the water pump.

[0154] like Figure 26 and Figure 27As shown, the valve seat 310, the pump housing 350 and the sealing ring 340 form a first water inlet chamber 351 and a first water outlet chamber 352. The diaphragm 320 and the valve seat 310 form a working chamber 314. The source water enters from the water inlet 411, and simultaneously enters the four water inlet holes 2021202220232024 through the second water inlet chamber 414, wherein the source water entering 2021 passes through the water inlet channel and exits from the hole 2031, and then enters the water inlet hole 311, and the water entering the water inlet hole 311 enters the first water inlet chamber 351. When the diaphragm 320 moves downward, the volume of the working chamber 314 increases, the one-way valve 360 opens, the one-way valve 370 closes, and the water in the first water inlet chamber 351 flows into the working chamber 314, completing the water absorption action. When the diaphragm 320 moves upward, the volume of the working chamber 314 decreases, the one-way valve 360 is closed, and the one-way valve 370 is opened. The water in the working chamber 314 is discharged to the first water outlet chamber 352. The first water outlet chamber 352 and the water outlet hole 312 are connected. The water outlet hole 2041 and the water outlet hole 2011 are connected. The water in the working chamber 312 is discharged to the water outlet hole 2011 through this. The pressurized water in the first water outlet chambers in four directions are respectively collected to the second water outlet chamber 415 through the water outlet holes 2011, 2012, 2013, and 2014. The high-pressure water in the second water outlet chamber 415 is discharged from the pump head through the water outlet 412 to complete the pressurization. The inlet and outlet of the pressurization chamber distributed in four directions are connected together by means of parallel water channels. A static end face sealing structure is used to divide the inlet and outlet water chambers. The connection joints between the chambers are reduced, thereby reducing the risk of leakage in the pipeline connection. By installing the water circuit inside the pump body, the volume occupied by the water circuit is greatly reduced, making the pump head more compact, simplifying the connecting pipes, reducing the volume and reducing the risk of leakage.

[0155] like Figure 21 As shown, there are three deformation zones on the diaphragm 320, including a first deformation zone 323, a second deformation zone 324, and a third deformation zone 325. Each deformation zone is covered with a buffer cavity 327. The buffer cavity 327 has the function of reducing the peak pressure value of the working chamber 314 and increasing the peak-to-valley pressure value of the working chamber 314, thereby reducing the pressure pulsation at the water outlet 412 and significantly reducing noise.

[0156] The working principle of the buffer chamber 327 is as follows: Figure 27As shown, a buffer chamber 327 is disposed within a working chamber 314 and is a part of the space within the working chamber 314. The volume of this part of the space increases as the pressure within the working chamber 314 increases and decreases as the pressure within the working chamber 314 decreases. When the diaphragm 320 moves upward from the lowest point, the volume of the working chamber 314 decreases, the pressure within the working chamber 314 instantaneously increases, and the volume of the buffer chamber 327 increases due to the increased pressure, absorbing part of the pressure energy, thereby reducing the peak pressure within the working chamber 314. When the diaphragm 320 moves downward from the highest point, the volume of the working chamber 314 increases, the pressure within the working chamber 314 instantaneously decreases, and the volume of the buffer chamber 327 decreases due to the decreased pressure, releasing the stored pressure energy, thereby increasing the valley pressure within the working chamber 314 and thus reducing the amplitude of the pressure change within the working chamber 314.

[0157] The embodiments of the present application have been described in detail above. Specific examples are used herein to elaborate on the principles and implementation manners of the present application. The description of the above embodiments is only used to help understand the technical solution and its core idea of the present application. Therefore, any changes or deformations made by those skilled in the art based on the idea of the present application, within the specific implementation manners and application scope of the present application, fall within the scope of protection of the present application. In summary, the content of this specification should not be construed as a limitation to the present application.

Claims

1. The water inlet and outlet structure of a diaphragm booster pump head, characterized in that, The booster pump includes: Source water enters from the water inlet and simultaneously enters at least two water inlet holes through the second water inlet cavity. The source water entering the water inlet holes enters the first water inlet cavity through the water inlet flow path. When the volume of the working cavity increases, the water in the first water inlet cavity flows into the working cavity to complete water absorption; when the volume of the working cavity decreases, the water in the working cavity is discharged to the first water outlet cavity, and the water in the working cavity is discharged to the water outlet hole through this. The pressurized water is collected to the second water outlet cavity through the at least two water outlet holes, and the high-pressure water in the second water outlet cavity is discharged from the water outlet of the pump head.

2. The water inlet and outlet structure of the diaphragm booster pump head according to claim 1, characterized in that, The pump head of the booster pump includes a transmission component, a diaphragm, and a pressurization cavity; the transmission component includes: a drive shaft, an eccentric component, and a swing wheel component; the eccentric component is connected to the drive shaft and rotates under the drive of the drive shaft; the swing wheel component is connected to the eccentric component, and the rotation of the eccentric component drives the swing wheel component to swing radially along the drive shaft; the swing of the swing wheel component drives the diaphragm to deform radially along the drive shaft, so that at least one pressurization cavity expands or compresses radially.

3. The water inlet and outlet structure of the diaphragm booster pump head according to claim 2, characterized in that, During the rotation process of the eccentric component, the phases differ by 180°, and the generated eccentric forces cancel each other out and the torques are balanced.

4. The water inlet and outlet structure of the diaphragm booster pump head according to claim 2, characterized in that The eccentric component includes a first eccentric wheel, a second eccentric wheel, and a third eccentric wheel arranged in sequence along the drive shaft; the eccentricity of the third eccentric wheel is the same as that of the first eccentric wheel; the eccentricity of the second eccentric wheel is opposite to that of the first eccentric wheel.

5. The water inlet and outlet structure of the diaphragm booster pump head according to claim 2, characterized in that During the swinging process of the swing wheel component, the resultant force of the eccentric forces along the radial direction of the drive shaft is zero and the resultant torque is balanced.

6. The water inlet and outlet structure of the diaphragm booster pump head according to claim 4, characterized in that, The swing wheel component includes: A first swing wheel, connected to the first eccentric wheel; A second swing wheel, connected to the second eccentric wheel; A third swing wheel, connected to the third eccentric wheel; The swinging direction of the third swing wheel is the same as that of the first swing wheel; The swinging direction of the second swing wheel is opposite to that of the first swing wheel.

7. The water inlet and outlet structure of the diaphragm booster pump head according to claim 6, characterized in that, The pressurization cavity includes: A first pressurization cavity, which drives the diaphragm to deform by the first swing wheel to expand or compress radially; A second pressurization cavity, which drives the diaphragm to deform by the second swing wheel to expand or compress radially; A third pressurization cavity, which drives the diaphragm to deform by the third swing wheel to expand or compress radially.

8. The water inlet and outlet structure of the diaphragm booster pump head according to claim 7, characterized in that The third pressurization cavity expands or compresses synchronously with the first pressurization cavity; The second pressurization cavity compresses or expands in the opposite direction to the first pressurization cavity.

9. The water inlet and outlet structure of the diaphragm booster pump head according to claim 7, characterized in that, When the thinner parts of the first eccentric wheel and the third eccentric wheel rotate to the corresponding first swing wheel and the third swing wheel, the deformation areas of the diaphragms corresponding to the first swing wheel and the third swing wheel are in the position near the axis, and the volumes of the first pressurization cavity and the third pressurization cavity are the largest; The eccentricity position of the second eccentric wheel is opposite to that of the first eccentric wheel and the third eccentric wheel. At the same time, when the thinner part of the second eccentric wheel rotates to the position of the second swing wheel, the deformation area of the corresponding diaphragm is in the position near the axis, and the volume of the second pressurization cavity is the largest.

10. The water inlet and outlet structure of the diaphragm booster pump head according to claim 7, characterized in that, When the thicker parts of the first eccentric wheel and the third eccentric wheel rotate to the corresponding first balance wheel and the third balance wheel, the deformation zones of the diaphragms corresponding to the first balance wheel and the third balance wheel are at the far axis position, and the volumes of the first boosting chamber and the third boosting chamber are the smallest; at the same time, the thicker part of the second eccentric wheel rotates to the position of the second balance wheel, the deformation zone of the corresponding diaphragm is at the far axis position, and the volume of the second boosting chamber is the smallest.

11. The water inlet and outlet structure of the diaphragm booster pump head according to claim 2, characterized in that, At least one of the boost chambers performs expansion or compression movements in sequence.

12. The water inlet and outlet structure of the diaphragm booster pump head according to claim 2, characterized in that, Every time the driving shaft rotates one circle, at least one of the boost chambers completes an expansion and compression cycle.

13. The water inlet and outlet structure of the diaphragm booster pump head according to claim 2, characterized in that, A guide rail is arranged on the balance wheel of the balance wheel assembly, and a slide groove is arranged on the slider. The guide rail and the slide groove are clearance-matched, so that the slider and the balance wheel slide relatively along the direction of the guide rail.

14. The water inlet and outlet structure of the diaphragm booster pump head according to claim 13, characterized in that, The diaphragm is provided with a plurality of diaphragm undercut groups, and the diaphragm undercuts are connected to the slider undercut grooves.

15. The water inlet and outlet structure of the diaphragm booster pump head according to claim 14, characterized in that, The diaphragm undercut group cooperates with the slider undercut groove, and the fixing groove on the diaphragm cooperates with the fixing pin on the slider, thereby increasing the relative motion force between the diaphragm and the slider.

16. The water inlet and outlet structure of the diaphragm booster pump head according to claim 1, characterized in that, There are four water inlet holes and four water outlet holes.

17. The pump head of a diaphragm booster pump, characterized in that, include: The water inlet and outlet structure of the booster pump according to any one of claims 2 to 15, wherein the pump head further comprises: four rectangular booster components connected to the transmission component and arranged opposite to each other along the axis of the drive shaft, wherein the booster components comprise: A piston chamber, wherein at least one pressurizing chamber is provided on the inner wall thereof; The diaphragm is sealed with the piston chamber to form the at least one pressurizing chamber.

18. A diaphragm booster pump, characterized in that, include: The diaphragm booster pump head as claimed in claim 17.

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