Double-head pump and water treatment equipment

Abstract

The utility model discloses a double-end pump and water treatment equipment, and relates to the technical field of water pumps, the double-end pump comprises a motor and two pump head assemblies, and output shaft parts are arranged at the two ends of the motor in the axial direction; the two pump head assemblies are arranged at the two ends, in the axial direction, of the motor respectively and are in transmission connection with the output shaft part. According to the technical scheme, the output shaft part and the pump head assemblies are arranged at the two ends, in the axial direction, of the motor respectively, the two pump head assemblies are driven by the two output shaft parts to conduct pressurization, and the pressurization efficiency is improved; according to the double-head pump provided by the utility model, the two pump head assemblies are driven by one motor, so that the pressurization of two water paths by one booster pump is realized, the flux can be obviously increased compared with a single-head booster pump, and compared with a scheme that two booster pumps are arranged to pressurize the two water paths, the double-head pump provided by the invention has the advantages that the two pump head assemblies are driven by one motor, so that the flux is obviously increased; the vibration and noise can be obviously reduced, and the cost can be saved.

Description

Technical Field

[0001] The utility model relates to the technical field of water pumps, in particular to a double-head pump and water treatment equipment. Background Art

[0002] With the growing emphasis on health, water treatment equipment is playing an increasingly important role in users' daily lives. The booster pump is the core power component of a water purifier. Its primary function is to increase the inlet water pressure to the required pressure for the water purification filter while maintaining a stable flow rate. Currently, water treatment equipment on the market typically uses a single booster pump to drive the entire water purification process. When boosting pressure in two water lines is required, multiple single booster pumps are typically used, which is costly and noisy. Utility Model Content

[0003] The main purpose of the utility model is to provide a double-head pump and water treatment equipment, aiming to optimize the cost and noise of existing multi-channel water treatment equipment.

[0004] To achieve the above-mentioned purpose, the present invention provides a double-head pump, comprising:

[0005] A motor, wherein both ends of the motor are provided with output shafts; and

[0006] Two pump head assemblies are respectively arranged at two ends of the motor axis and are transmission-connected to the output shaft.

[0007] In one embodiment, the motor comprises a brushless motor.

[0008] In one embodiment, a water outlet channel is formed in the pump head assembly, and the water outlet channels of the two pump head assemblies are staggered in the circumferential direction of the motor.

[0009] In one embodiment, the included angle between the central axes of the two water outlet channels in the circumferential direction of the motor is a, 50°<a<180°

[0010] In one embodiment, the motor comprises:

[0011] chassis;

[0012] The stator assembly includes a stator core, wherein the stator core is embedded in the housing;

[0013] Two bearing assemblies are provided at both ends of the housing in the axial direction, and the bearing assemblies are used for mounting the pump head assembly; and

[0014] The rotor assembly includes a rotor core, which is matched with the stator core. Both ends of the rotor core along the axial direction pass through the bearing assembly to form the two output shaft portions.

[0015] In one embodiment, the stator core includes a stator yoke and a plurality of stator teeth provided on the stator yoke, and a winding slot is formed between two adjacent stator teeth; a clamping portion is provided at one end of the stator yoke, and a clamping slot is provided at the other end, and the clamping portion and the clamping slot can be clamped together.

[0016] In one embodiment, the stator assembly further comprises a winding, wherein the winding is mounted on the stator core, and a plastic sealant is filled between the winding and the stator core; and / or

[0017] The stator assembly and the housing are connected as a whole through plastic sealing glue.

[0018] In one embodiment, the housing is made of a non-metallic material; and / or,

[0019] The casing is made of BMC material.

[0020] In one embodiment, the pump head assembly comprises:

[0021] a housing, wherein the housing is formed with a water inlet flow channel and a water outlet flow channel;

[0022] a diaphragm mounted on the housing and defining a cavity between the diaphragm and the housing, wherein the cavity is in communication with the water inlet and outlet channels; and

[0023] a balance wheel seat, disposed between the diaphragm and the output shaft portion, the balance wheel seat comprising a base and a plurality of balance wheels rotatably connected to the base, the balance wheels being fixedly connected to the diaphragm; and

[0024] The eccentric wheel abuts against the base of the balance wheel seat and is transmission-connected to the output shaft portion, so that the balance wheel seat drives the diaphragm to move under the rotation of the output shaft portion, thereby changing the volume of the cavity between the diaphragm and the housing and pressurizing the liquid flowing through the cavity.

[0025] In one embodiment, the diaphragm and / or the housing is provided with a plurality of partitions to separate the cavity into a plurality of pressurizing cavities and water outlet cavities, and the water outlet cavities are in communication with the plurality of pressurizing cavities;

[0026] The water inlet channel is communicated with the plurality of pressurizing chambers, and the water outlet chamber is communicated with the water outlet channel.

[0027] In one embodiment, the number of the boost chambers is 3 to 6.

[0028] To achieve the above objectives, the present application also proposes a water treatment device, which includes the double-head pump as described above.

[0029] The technical solution of the present invention is to provide output shafts and pump head assemblies at both ends of the axial direction of the motor, and drive the two pump head assemblies to boost pressure through the two output shafts, thereby realizing the boosting of two water channels by one booster pump. Moreover, compared with a single-head booster pump, it can significantly increase the flux. Compared with the solution of providing two booster pumps to boost pressure in two water channels, the double-head pump provided in this application can significantly reduce vibration and noise, and save costs, because the two pump head assemblies are driven by one motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0031] Figure 1 A schematic structural diagram of an embodiment of a double-head pump provided by the utility model;

[0032] Figure 2 for Figure 1 Cross-sectional view of the double-head pump;

[0033] Figure 3 for Figure 1 A three-dimensional schematic diagram of the motor in FIG;

[0034] Figure 4 for Figure 3 Cross-sectional view of the motor;

[0035] Figure 5 for Figure 1 A three-dimensional schematic diagram of the pump head assembly;

[0036] Figure 6 for Figure 5 A cross-sectional view of the pump head assembly in FIG.

[0037] Figure 7 A schematic diagram of the central axis angle of the water outlet channel provided by the present invention.

[0038] Description of Figure Numbers:

[0039] 100. Double-head pump; 10. Motor; 11. Output shaft; 12. Casing; 13. Stator core; 14. Stator winding; 15. Bearing assembly; 16. Rotor core; 50. Pump head assembly; 51. Water outlet channel; 52. Casing; 53. Water inlet channel; 54. Diaphragm; 55. Base; 56. Balance wheel; 57. Eccentric wheel; 58. Booster chamber; 59. Pump cover; 60. Pump cover bracket; 61. Valve seat; 62. Water valve plate; 63. Water outlet chamber.

[0040] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0042] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0043] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0044] With the growing emphasis on health, water treatment equipment is playing an increasingly important role in users' daily lives. The booster pump is the core power component of a water purifier. Its primary function is to increase the inlet water pressure to the required pressure for the water purification filter while maintaining a stable flow rate. Currently, water treatment equipment on the market typically uses a single booster pump to drive the entire water purification process. When boosting pressure in two water lines is required, multiple single booster pumps are typically used, which is costly and noisy.

[0045] The utility model provides a double-head pump 100. Figure 1 A schematic structural diagram of an embodiment of a double-head pump 100 provided by the present invention; Figure 2 for Figure 1 A cross-sectional view of the double-head pump 100; Figure 3 for Figure 1 A three-dimensional schematic diagram of the motor 10; Figure 4 for Figure 3 A cross-sectional view of the motor 10; Figure 5 for Figure 1 A perspective schematic diagram of the pump head assembly 50; Figure 6 for Figure 5 A cross-sectional view of the pump head assembly 50; Figure 7 The schematic diagram of the central axis angle of the water outlet channel 51 provided by the present invention is shown in FIG. Figures 1 to 7 In one embodiment of the present invention, the dual-head pump 100 includes a motor 10 and two pump head assemblies 50, and the output shaft portions 11 are provided at both ends of the motor 10 in the axial direction; the two pump head assemblies 50 are respectively provided at the two ends of the motor 10 in the axial direction, and are transmission-connected to the output shaft portions 11.

[0046] The technical solution of the present invention is to provide an output shaft 11 and a pump head assembly 50 at both ends of the axial direction of the motor 10, and drive the two pump head assemblies 50 to boost pressure through the two output shafts 11, thereby realizing one booster pump to boost pressure on two water channels. Moreover, compared with a single-head booster pump, it can significantly increase the flux. Compared with the solution of setting up two booster pumps to boost pressure on two water channels, the double-head pump 100 provided in this application can significantly reduce vibration and noise, and save costs, because the two pump head assemblies 50 are driven by one motor 10.

[0047] It should be emphasized that the pump head assembly 50 and the motor 10 are detachably fixedly connected. For example, the pump head assembly 50 and the motor 10 may be provided with perforations on their outer peripheries and detachably connected via connectors such as screws or rivets. The pump head assembly 50 and the motor 10 may also be provided with matching threads at the connection point to achieve detachable connection via threaded connection.

[0048] The specific implementation form of the motor 10 is not limited, and it can be a brushed motor 10 or a brushless motor 10, which is not limited here.

[0049] At present, most of the booster pumps used in water purifiers are DC brush diaphragm pumps, which require the entire water purifier to be equipped with a 12 / 24 / 36V DC adapter to convert AC power into DC power to power the water pump, and the power supply current is relatively large; at the same time, the solenoid valves in the water purifier, such as the one-way valve and the backflow flush valve (generally 24V), also require an adapter to convert AC power into DC power to power them, and the power supply current is relatively small; especially when the voltages required by the two types of electrical components, the water pump and the solenoid valve, are different, the water purifier requires two power adapters for power supply, which greatly occupies the volume of the water purifier; at the same time, the brush DC diaphragm pump greatly affects the efficiency, noise, volume and life of the motor 10 due to the presence of a mechanical commutator.

[0050] In one embodiment, the motor 10 includes a brushless motor 10, which eliminates the carbon brushes of the brushed DC motor 10 and replaces them with an electronic commutator, thereby greatly improving the noise and efficiency performance of the motor 10 and reducing the size of the motor 10. The booster pump using the brushless motor 10 can reduce the volume by more than 20% compared to the original DC brush diaphragm pump.

[0051] Compared with the brushed motor 10, the brushless motor 10 has removed the brushes. The most direct change is that there are no sparks generated when the brushed motor 10 is running, which greatly reduces the interference of the sparks on the remote control radio equipment. At the same time, the brushless motor 10 has no brushes, and the friction during operation is greatly reduced, the operation is smooth, and the noise will be much lower. Furthermore, the brushless motor 10 has no brushes, and the wear of the brushless motor 10 is mainly concentrated on the bearings. From a mechanical point of view, the brushless motor 10 is almost a maintenance-free motor. When necessary, only some dust removal maintenance is required. It is easy to maintain and has a long service life.

[0052] Taking into account that if the two pump head assemblies 50 discharge liquid at the same position at the same time, it will cause a large impact noise, therefore, in a further embodiment, a water outlet channel 51 is formed in the pump head assembly 50, and the water outlet channels 51 of the two pump head assemblies 50 are staggered in the circumferential direction of the motor 10. In this way, the water outlets corresponding to the two water outlet channels 51 are staggered to avoid simultaneous discharge and cause impact noise.

[0053] See also Figure 7It can be understood that the larger the angle between the central axes of the two water outlet channels 51 in the circumferential direction of the motor 10, the larger the distance between the two, and the smaller the impact noise caused. The smaller the angle between the two, the more overlapping parts there are in the axial direction of the motor 10, the more noise superposition caused, and the greater the impact noise. Therefore, in a further embodiment, the angle between the central axes of the two water outlet channels 51 in the circumferential direction of the motor 10 is a, 50°<a<180°. It can be understood that when a is less than 50°, the angle between the two water outlet channels 51 is too small, and the distance between the noise sources in the circumferential direction of the motor 10 is too small, which will lead to noise superposition and form a larger impact noise. Therefore, in the technical solution of this embodiment, by controlling the angle between the central axes of the two water outlet channels 51 in the circumferential direction of the motor 10 within the range of 50° to 180°, the water outlets corresponding to the two water outlet channels 51 can be discharged in an staggered manner to avoid simultaneous discharge and impact noise.

[0054] The specific form of forming the two output shafts is not limited. It can be a stator driving two rotors, with the two rotors forming the output shaft portions 11 respectively, or it can be a rotor with both ends of the output shaft portions 11. The type of the motor 10 can be an outer rotor motor 10 or an inner rotor motor 10, which is not limited here.

[0055] See also Figures 1 to 4 In one embodiment, the motor 10 includes a housing 12, a stator assembly, two bearing assemblies 15 and a rotor assembly; the stator assembly includes a stator core 13, which is embedded in the housing 12; the two bearing assemblies 15 are respectively provided at both ends of the housing 12 in the axial direction, and the bearing assemblies 15 are used for the installation of the pump head assembly 50; the rotor assembly includes a rotor core 16, which is matched with the stator core 13, and the rotor core 16 passes through the bearing assemblies 15 at both ends along its axial direction to form the two output shaft portions 11.

[0056] In the technical solution of this embodiment, by setting two bearing assemblies 15, the movement of the rotor core 16 can be guided, and the rotor core 16 passes through the bearing assemblies 15 at both ends along its axial direction to form two output shaft portions 11, so that one rotor core 16 forms two output shaft portions 11, thereby improving the stability of the motor 10 driving the two pump head assemblies 50.

[0057] It should be noted that the stator core 13 is embedded in the housing 12. The housing 12 may be provided with an embedding groove, and the stator core 13 may be correspondingly arranged in the embedding groove. Alternatively, the stator core 13 may be plastic-sealed together with the housing 12. This is not limited here.

[0058] The stator core 13 includes a stator yoke and a plurality of stator teeth provided on the stator yoke, with winding slots formed between adjacent stator teeth. The stator core 13 is formed by stacking and bending bar punching sheets, and a clamping portion is provided at one end of the stator yoke and a clamping slot is provided at the other end. The clamping portion and the clamping slot can be clamped together to form the stator core 13 by bending and enclosing the stacked bar punching sheets.

[0059] Specifically, the stator core 13 is formed by axially stacking a plurality of bar punching sheets. A stator yoke, stator teeth, and winding slots are provided on each bar punching sheet. The stator teeth are provided on the stator yoke, and winding slots are formed between two adjacent stator teeth so that the stator winding 14 can be wound around the stator teeth and located in the winding slots, thereby generating a magnetic field for the rotor assembly to achieve the stator function. It should be particularly emphasized that a clamping portion is provided at one end of the stator yoke and a clamping slot is provided at the other end. The stator core 13 is formed by stacking the bar punching sheets and then bending and enclosing them. Therefore, when producing the stator core 13, after the bar punching sheets are stacked, winding and other steps can be performed first, and then the stator after winding is completed can be bent and enclosed to form the stator core 13, and the clamping portions and the clamping slots at the two ends of the stator yoke are clamped together to improve the stability of the connection of the bar punching sheets after bending and enclosing. In this way, the entire process of manufacturing the stator core 13 is simple and quick to operate, without requiring too many complicated steps, thereby improving the production efficiency of the stator assembly. Furthermore, after the strip punchings are stacked and bent to form the stator core 13, the connection points at both ends can be welded to further ensure the stability of the connection of the bent and enclosed strip punchings.

[0060] The technical solution of the present utility model is to first stack multiple strip-shaped punchings to a specified size, then perform winding and other steps, and then bend and enclose the wound stator to form the stator core 13. The clamping portions and the clamping slots at the two ends of the stator yoke are clamped together to improve the connection stability of the bent and enclosed strip-shaped punchings. The entire process of manufacturing the stator core 13 is simple and fast, without requiring too many tedious steps, thereby improving the production efficiency of the stator assembly.

[0061] In one embodiment, the stator core 13 has a first state and a second state. In the first state, the stator core 13 is arranged in a bar shape by stacking bar-shaped punching sheets. In the second state, the clamping portion and the clamping slot are clamped together. Specifically, when the stator core 13 is in the first state, the stator core 13 at this time has been stacked to a specified size by a plurality of bar-shaped punching sheets and is arranged in a bar shape (i.e., a straight line). When the stator core 13 is in the second state, the bar-shaped stator core 13 is enclosed, and the clamping portion and the clamping slot are clamped together. It should be noted that the stator assembly also includes a stator winding 14b. When the stator core 13 is in the first state, the stator winding 14b is wound on the stator teeth. Specifically, the step of winding the stator winding 14b of the stator core 13 is performed and completed when the stator core 13 is in the first state. Because the width of the winding slot opening of the stator core 13 in the first state is greater than the width of the winding slot opening of the stator core 13 in the second state, the wider slot opening can increase the number of turns of the winding coil, reduce the gap between two adjacent windings, and increase the slot fill rate, thereby improving the efficiency of the motor 10 using the stator assembly.

[0062] The electronic stator core 13 and the rotor core 16 cooperate to realize the function of the motor 10. The stator assembly and the housing 12 are connected as a whole by plastic sealing glue, and the stator assembly and the housing 12 are injection molded as a whole, so that the live parts of the motor 10 can be plastic-sealed to form a closed whole, avoiding the occurrence of occasional failures. When the motor 10 of the present invention is applied to a booster pump product, it can also avoid the situation where the pump head of the booster pump leaks and flows into the motor 10 to cause a safety hazard. Furthermore, the stator assembly also includes a stator winding 14, which is installed on the stator core 13, and the space between the winding and the stator core 13 is filled with plastic sealing glue. After the gap between the stator core 13 and the stator winding 14 is filled with a material with excellent heat dissipation performance, it is beneficial to the heat dissipation of the motor 10 and thus improves the efficiency of the motor 10.

[0063] In one embodiment, the bearing assembly 15 includes a bearing cover and a bearing mounted on the bearing cover, and the bearing cover, the housing 12 and the stator core 13 are injection molded as one piece. Specifically, the motor 10 of the present invention is an inner rotor motor 10, and a bearing is provided at its end. When the stator core 13 and the housing 12 are injection molded, the bearing cover, the housing 12 and the stator core 13 can also be injection molded as one piece. When the motor 10 is assembled, the stator core 13 that is plastic-sealed as one piece can be directly assembled. The housing 12 and the bearing cover can be sleeved on the outside of the rotor core 16, and the bearing cover 400 is provided corresponding to the bearing to protect the bearing.

[0064] In one embodiment, the housing 12 is made of a non-metallic material. Furthermore, the housing 12 is made of BMC. Specifically, BMC stands for Bulk (Dough) Molding Compounds, also known as unsaturated polyester bulk molding compound. Its main raw materials are a fully mixed prepreg of GF (chopped glass fiber), UP (unsaturated resin), MD (calcium carbonate filler), and various additives.

[0065] BMC materials have the following properties:

[0066] ① Excellent Mechanical Properties: BMC products possess exceptional mechanical strength and rigidity, with tensile strength and modulus exceeding those of conventional plastics. They also offer excellent wear and impact resistance, making them suitable for replacing traditional metal materials in mechanical design and manufacturing, saving materials and reducing costs. ② Excellent Heat Resistance and Adhesion: BMC products maintain excellent mechanical properties and stability even at high temperatures and can be used within a wide range of -20°C to 180°C. Furthermore, because BMC is a thermosetting material that cures in the mold, it exhibits excellent surface adhesion, making it suitable for the manufacture of complex-shaped components requiring high precision. ③ Excellent Corrosion Resistance and Barrier Properties: BMC products offer excellent chemical resistance, making them suitable for use in components exposed to corrosive substances such as acids and alkalis. Furthermore, BMC's high density and barrier properties make it suitable for use in liquid storage containers such as fuel tanks and water tanks, achieving impermeability, leakage resistance, and contamination resistance. ④Excellent electrical insulation and anti-electrolytic corrosion properties: BMC products have excellent electrical insulation and anti-electrolytic corrosion properties and can be widely used in electrical appliances, electronics, communications and other fields. BMC's anti-electrolytic corrosion property also makes it an excellent coating material that can replace traditional organic coatings, achieving the purpose of saving materials and improving coating effects. ⑤Simple manufacturing process and low cost: BMC products have a simple manufacturing process and a high degree of automation, with high production efficiency and one-time molding rate, which can reduce manufacturing costs. BMC products can also be used in a variety of manufacturing processes such as mold injection molding and composite material molding, and are suitable for a variety of complex parts and molds.

[0067] In general, BMC products have the advantages of excellent mechanical properties, heat resistance, corrosion resistance, and outstanding electrical insulation, which can achieve the goals of energy conservation and emission reduction, reduce costs, and improve quality.

[0068] See also Figures 5 to 7In addition, the specific implementation form of the pump head assembly 50 is not limited, and it can be a diaphragm pump head, a vane pump head, an axial flow pump head, etc., which is not limited here. In an optional embodiment, the pump head assembly 50 includes a housing 52, a diaphragm 54, a balance wheel seat and an eccentric wheel 57, and the housing 52 is formed with an inlet flow channel 53 and an outlet flow channel 51; the diaphragm 54 is installed in the housing 52, and a cavity is defined between the diaphragm 54 and the housing 52, and the cavity is connected to the inlet flow channel 53 and the outlet flow channel 51; The balance wheel seat is arranged between the diaphragm 54 and the output shaft portion 11, and the balance wheel seat includes a base 55 and a plurality of balance wheels 56 rotatably connected to the base 55, and the balance wheels 56 are fixedly connected to the diaphragm 54; the eccentric wheel 57 abuts against the base 55 of the balance wheel seat and is transmission-connected to the output shaft portion 11, so that under the rotation of the output shaft portion 11, the balance wheel seat drives the diaphragm 54 to move, thereby changing the volume of the cavity between the diaphragm 54 and the housing 52, and pressurizing the liquid flowing through the cavity.

[0069] In the technical solution of this embodiment, since the eccentric wheel 57 and the output shaft portion 11 are transmission-connected, the eccentric wheel 57 will rotate eccentrically when the output shaft portion 11 rotates, thereby driving the balance wheel seat to swing in the axial direction of the motor 10. At this time, the balance wheel 56 is fixedly connected to the diaphragm 54. When the balance wheel seat swings, the volume of the cavity between the diaphragm 54 and the housing 52 will change, and the liquid flowing through the cavity will be pressurized, allowing water to enter the housing 52 from the water inlet channel 53. Under the action of the diaphragm 54 and the housing 52, the water is pressurized and flows out from the water outlet channel 51.

[0070] Specifically, the housing 52 includes a pump cover 59, a pump cover bracket 60, and a valve seat 61. The pump cover 59 and the pump cover bracket 60 define a pump head cavity. The pump cover 59 is provided with a water inlet and a water outlet. The water inlet and the water outlet are respectively connected to the pump head cavity, so that external water can enter the pump head cavity through the water inlet, and the water in the pump head cavity can be discharged to the outside through the water outlet. The valve seat 61 and diaphragm 54 housed in the pump head cavity cooperate to increase the pressure of the water entering the pump head cavity, so that the pump head assembly 50 can output a pressurized high-pressure water flow.

[0071] Furthermore, the diaphragm 54 and / or the shell 52 are provided with multiple partitions to divide the cavity into multiple boosting chambers 58 and water outlet chambers 63, and the water outlet chambers 63 are connected with the multiple boosting chambers 58; the water inlet channel 53 is connected with the multiple boosting chambers 58, and the water outlet chamber 63 is connected with the water outlet channel 51.

[0072] Specifically, the boost chamber 58 is defined between the valve cover bracket and the diaphragm 54. The valve cover bracket has a connecting hole connecting the water inlet channel 53 and the boost chamber 58. A water inlet valve is also provided in the housing 52 at a location corresponding to the connecting hole. The water inlet valve includes a water valve plate 62 disposed at the connecting hole. During the pressurization process, the eccentric wheel 57 rotates eccentrically, thereby causing the multiple balance wheels 56 on the balance wheel seat to sequentially generate up and down reciprocating motion, and the bottom wall of the diaphragm 54 is also simultaneously pushed upward or pulled downward, resulting in repeated up and down displacement. Therefore, when the balance wheel 56 moves downward, it simultaneously pulls downward on the corresponding portion of the bottom wall of the diaphragm 54, pushing open the water inlet valve plate 62, allowing water entering the water inlet channel 53 through the water inlet to enter the boost chamber 58 through the connecting hole. As the balance wheel 56 moves upward, it simultaneously pushes upward on the corresponding portion of the bottom wall of the diaphragm 54, squeezing the water within the boost chamber 58 and increasing its pressure. The pressurized water pushes open the outlet valve plate 62 and flows sequentially through each boost chamber 58 into the outlet chamber 63. The water is then output from the pump head assembly 50 through the water outlet, providing water at the required pressure for the water treatment equipment equipped with the diaphragm booster pump.

[0073] The pump head assembly 50 provided in the embodiment of the present application has 3 to 6 boost chambers 58. Therefore, in a complete 360-degree rotation, each boost chamber 58 only needs to rotate 120 to 60 degrees to perform work. In other words, the diaphragm booster pump allows for a long period of overlap between the work of each boost chamber 58 within a cycle. That is, before one boost chamber 58 finishes its work, the next boost chamber 58 begins to take over in advance, thereby making water suction and drainage smoother and reducing vibration and noise.

[0074] The present invention also provides a water treatment device, comprising a dual-head pump 100. The specific structure of the dual-head pump 100 is similar to that of the above-described embodiments. Since the water treatment device utilizes all the technical solutions of all the above-described embodiments, it at least has all the beneficial effects brought about by the technical solutions of the above-described embodiments, which will not be described in detail here. The specific form of the water treatment device is not limited and can be a water heater, a water purifier, etc. In one embodiment, the water treatment device is a water purifier.

[0075] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A double-head pump, characterized in that: include: A motor, wherein both ends of the motor are provided with output shafts; and Two pump head assemblies are respectively arranged at two ends of the motor axis and are transmission-connected to the output shaft; A water outlet channel is formed in the pump head assembly, and the water outlet channels of the two pump head assemblies are staggered in the circumferential direction of the motor.

2. The double-head pump according to claim 1, characterized in that The included angle between the central axes of the two water outlet channels in the circumferential direction of the motor is a, 50°<a<180°.

3. A double-head pump, characterized in that: include: A motor, wherein both ends of the motor are provided with output shafts; as well as, Two pump head assemblies are respectively arranged at two ends of the motor axis and are transmission-connected to the output shaft; The pump head assembly comprises: a housing, wherein the housing is formed with a water inlet flow channel and a water outlet flow channel; a diaphragm mounted on the housing and defining a cavity between the diaphragm and the housing, wherein the cavity is in communication with the water inlet and outlet channels; and a balance wheel seat, disposed between the diaphragm and the output shaft portion, the balance wheel seat comprising a base and a plurality of balance wheels rotatably connected to the base, the balance wheels being fixedly connected to the diaphragm; and The eccentric wheel abuts against the base of the balance wheel seat and is transmission-connected to the output shaft portion, so that the balance wheel seat drives the diaphragm to move under the rotation of the output shaft portion, thereby changing the volume of the cavity between the diaphragm and the housing and pressurizing the liquid flowing through the cavity.

4. The double-head pump according to claim 1 or 3, characterized in that: The motor includes a brushless motor.

5. The double-head pump according to claim 1 or 3, characterized in that: The motor comprises: chassis; The stator assembly includes a stator core, wherein the stator core is embedded in the housing; Two bearing assemblies are provided at both ends of the housing in the axial direction, and the bearing assemblies are used for mounting the pump head assembly; and The rotor assembly includes a rotor core, which is matched with the stator core. Both ends of the rotor core along the axial direction pass through the bearing assembly to form the two output shaft portions.

6. The double-head pump according to claim 5, characterized in that The stator core includes a stator yoke and a plurality of stator teeth arranged on the stator yoke, and a winding slot is formed between two adjacent stator teeth; one end of the stator yoke is provided with a clamping portion, and the other end is provided with a clamping slot, and the clamping portion and the clamping slot can be clamped together.

7. The double-head pump according to claim 5, characterized in that The stator assembly further includes a stator winding, the winding is mounted on the stator core, and a plastic sealant is filled between the stator winding and the stator core; and / or The stator assembly and the housing are connected as a whole through plastic sealing glue.

8. The double-head pump according to claim 5, characterized in that The housing is made of non-metallic material; and / or, The casing is made of BMC material.

9. The double-head pump according to claim 3, characterized in that: The diaphragm and / or the housing are provided with a plurality of partitions to separate the cavity into a plurality of pressurizing chambers and a water outlet chamber, and the water outlet chamber is in communication with the plurality of pressurizing chambers; The water inlet channel is communicated with the plurality of pressurizing chambers, and the water outlet chamber is communicated with the water outlet channel.

10. The double-head pump according to claim 9, characterized in that The number of the boost chambers is 3 to 6.

11. A water treatment device, characterized in that: The water treatment equipment comprises the double-head pump according to any one of claims 1 to 10.

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