Efficient energy-saving RO brushless diaphragm booster pump

Abstract

The utility model discloses a high-efficiency energy-saving RO brushless diaphragm booster pump, which is simple in structure and convenient to use, and solves the problems of large winding resistance, low energy utilization rate, weak magnetic circuit performance and the like through the matching arrangement of a shell assembly and a stator assembly and the adoption of a two-series and two-parallel winding mode of a stator winding. And the rotor assembly adopts the anisotropic sintered ferrite to meet the requirements of high efficiency, low vibration, high durability, long service life and few maintenance problems.

Description

Technical Field

[0001] The utility model belongs to the technical field of motors, and more specifically relates to an efficient energy-saving RO brushless diaphragm booster pump. Background Technique

[0002] As an important component for fluid transportation, the RO brushless diaphragm booster pump plays an important role in many fields such as actual production and water treatment. In recent years, with the increasingly obvious trend of global high efficiency, energy conservation and environmental protection, the efficiency and energy conservation of the brushless diaphragm booster pump have been continuously improved; First of all, the market scale has been further expanded. Due to the original manufacturing technology and solutions for diaphragm booster pumps, the manufacturing cost is relatively high. Therefore, the RO brushless diaphragm booster pump has sufficient room for development in the future. The RO brushless diaphragm booster pump not only responds to high efficiency, energy conservation and environmental protection in terms of manufacturing cost, but also responds to improvement in design, use, scrapping and recycling.

[0003] At present, the following problems still exist in the diaphragm booster pump:

[0004] 1. The utilization rate of the motor voltage is low, and the phase current of the motor is relatively high;

[0005] 2. The volume of the motor is relatively large;

[0006] 3. The thermal management performance is relatively poor;

[0007] 4. The overall noise is relatively large.

[0008] Based on the above situation, the utility model proposes an efficient energy-saving RO brushless diaphragm booster pump, which can effectively solve the above problems. Content of the Utility Model

[0009] Aiming at the deficiencies of the prior art, the utility model provides an efficient energy-saving brushless diaphragm booster pump, which has a simple structure and is convenient to use. Through the cooperative setting of the housing assembly and the stator assembly, the stator winding adopts a two-series and two-parallel winding method to solve problems such as large winding resistance, low energy utilization rate and weak magnetic circuit performance. The rotor assembly adopts anisotropic sintered ferrite to meet the requirements of high efficiency, low vibration, high durability, long life and few maintenance problems.

[0010] To achieve the above purpose, the utility model provides the following technical solution: An efficient energy-saving RO brushless diaphragm booster pump, including a pump body 1, on which bolt holes are provided, and the motor assembly 2 is fixedly connected through bolts 11, and a drive control assembly 3 is provided on the motor assembly 2;

[0011] The motor assembly 2 includes a housing assembly 21, a rotor assembly 22 and a stator assembly 23;

[0012] The housing assembly 21 includes a housing 211, a support base 212, a motor rear end cover 213, a motor front end cover, and a shock-absorbing rubber pad 214. The housing 211 is fixedly connected to the support base 212. There are 3 circumferentially equally spaced mounting through holes on the housing 211 for the fixed connection of the motor rear end cover 213 and the motor front end cover to the housing 211. The shock-absorbing rubber pad 214 is fixedly connected to the support base 212. Bearing seats are provided on both the motor rear end cover 213 and the motor front end cover;

[0013] The rotor assembly 22 includes a magnetic ring 221, bearings 222, a motor shaft 223, and a bushing 224; the motor shaft 223 is sequentially sleeved with the bushing 224 and the magnetic ring 221 from the inside to the outside, and bearings 222 are sleeved at both ends of the motor shaft 223; both ends of the motor shaft 223 extend to the outside through the central openings of the motor rear end cover 213 and the motor front end cover respectively, and the motor shaft 223 protruding from the motor front end cover is connected to the pump body 1;

[0014] The stator assembly 23 includes an iron core 231, a coil 232, a pin 233, a PCB adapter board 234, and an insulating plastic skeleton 235. The insulating plastic skeleton 235 wraps around the surface of the iron core 231. The coil 232 is wound around the iron core 231. One end of the pin 233 is fixed to the iron core 231, and the other end is inserted into the PCB adapter board 234 and fixedly connected to the PCB adapter board 234;

[0015] The drive control assembly 3 includes a PCB control board 31 and a PCB control board mounting housing 32; the PCB control board 31 and the PCB control board mounting housing 32 are fixedly connected by bolts;

[0016] The wall of the housing 211 is 2.5 mm, and the outer diameter is 77 mm;

[0017] The PCB control board 31 adopts a potting glue process.

[0018] Further, the housing 211 is in interference fit with the stator assembly 23.

[0019] Further, the magnetic ring 221 adopts an anisotropic sintered ferrite multi-pole magnetic ring. The motor shaft 223, the bushing 224, and the magnetic ring 221 are an integrated mechanism and are manufactured by an injection molding process.

[0020] Further, the stator assembly 23 adopts a pole-slot combination of 12 slots and 10 poles.

[0021] Further, the iron core 231 is formed by stacking a plurality of silicon steel sheets.

[0022] Further, the insulating plastic skeleton 235 is wrapped around the coil 232 and the iron core 231 by a plastic coating process.

[0023] Further, the coil 232 is formed into a star connection in a winding manner of two series and two parallel.

[0024] Further, the stator assembly 23 adopts PIN pins.

[0025] Further, both the front end cover of the motor and the rear end cover 213 of the motor are provided with positioning flanges. The positioning flange on the front end cover of the motor is connected to the pump body 1, and the positioning flange on the rear end cover 213 of the motor is connected to the screw holes on the PCB control board mounting housing 32 through bolts.

[0026] Further, a plurality of heat dissipation kylin chips are provided on the outside of the PCB control board mounting housing 32, potting glue is provided inside the PCB control board mounting housing 32, and thermal conductive glue is provided between the PCB control board 31 and the PCB control board mounting housing 32.

[0027] Further, a plurality of heat dissipation fins are provided on the PCB control board mounting housing (32).

[0028] Compared with the prior art, the beneficial effects of the present utility model are as follows: The brushless diaphragm booster pump has a simple structure and is convenient to use. Through the cooperative setting of the housing assembly and the stator assembly, the stator winding adopts a winding manner of two series and two parallel to meet problems such as large winding resistance, low energy utilization rate, and weak magnetic circuit performance. The rotor assembly adopts anisotropic sintered ferrite to meet the requirements of high efficiency, low vibration, high durability, long life, and few maintenance problems;

[0029] 1. High voltage utilization rate and high working efficiency.

[0030] 2. The winding manner of two series and two parallel reduces the resistance value and effectively reduces the heat loss during the operation of the motor.

[0031] 3. Through the anti-vibration rubber pads on the support base, the noise during operation is effectively reduced.

[0032] 4. The wall thickness of the outer shell is changed from 2 mm to 2.5 mm, and the outer diameter is 77 mm, solving the problem that the motor fails the salt spray test after the welding of the motor mounting bracket and the surface electrophoretic coating process.

[0033] 5. The PCB control board adopts the potting glue process, which is beneficial to the heat dissipation of electronic components such as MCU and MOS, makes its installation firm and reliable, waterproof and dustproof, simple to disassemble and assemble, and convenient for repair. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic structural diagram of the pump body part in the present utility model;

[0035] Figure 2 It is a schematic side view of the motor assembly in the present utility model and its corresponding sectional view taken along the B-B direction;

[0036] Figure 3 This is a schematic structural view of the drive control component in the present utility model;

[0037] Figure 4 This is an exploded structural view of the RO brushless diaphragm booster pump in the present utility model. Specific embodiments

[0038] In the description of the present utility model, it should be noted that for orientation terms, if there are terms such as "center", "lateral (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the orientation and position relationships indicated are based on the orientation or position relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and should not be construed as limiting the specific protection scope of the present utility model.

[0039] In addition, if there are terms such as "first" and "second", they are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, the meanings of "several" and "a number of" are two or more, unless otherwise clearly and specifically defined.

[0040] Refer to Figures 1 to 4 For further description of the present utility model.

[0041] An energy-efficient RO brushless diaphragm booster pump, the pump body 1 is provided with bolt holes and is fixedly connected to the motor assembly 2 through bolts 11, and a drive control component 3 is provided on the motor assembly 2;

[0042] The motor assembly 2 includes a housing assembly 21, a rotor assembly 22, and a stator assembly 23;

[0043] The housing assembly 21 includes an outer shell 211, a support base 212, a motor rear end cover 213, a motor front end cover, and a shock-proof rubber pad 214. The outer shell 211 is fixedly connected to the support base 212. The outer shell 211 is provided with 3 circumferentially equally spaced mounting through holes for the fixed connection of the motor rear end cover 213 and the motor front end cover to the outer shell 211. The shock-proof rubber pad 214 is fixedly connected to the support base 212, and bearing seats are provided on both the motor rear end cover 213 and the motor front end cover;

[0044] The rotor assembly 22 includes a magnetic ring 221, bearings 222, a motor shaft 223, and a bushing 224; the motor shaft 223 is sleeved with the bushing 224 and the magnetic ring 221 in sequence from the inside to the outside, and bearings 222 are sleeved at both ends of the motor shaft 223; both ends of the motor shaft 223 extend to the outside through the central openings of the motor rear end cover 213 and the motor front end cover respectively, and the motor shaft 223 protruding from the motor front end cover is connected to the pump body 1;

[0045] The stator assembly 23 includes an iron core 231, a coil 232, pins 233, a PCB adapter board 234, and an insulating plastic skeleton 235. The insulating plastic skeleton 235 wraps around the surface of the iron core 231. The coil 232 is wound around the iron core 231. One end of the pin 233 is fixed to the iron core 231, and the other end is inserted into the PCB adapter board 234 and fixedly connected to the PCB adapter board 234;

[0046] The drive control assembly 3 includes a PCB control board 31 and a PCB control board mounting housing 32; the PCB control board 31 and the PCB control board mounting housing 32 are fixedly connected by bolts;

[0047] The wall of the housing 211 is 2.5 mm, and the outer diameter is 77 mm, which solves the problem that the motor fails the salt spray test after the welding of the motor mounting bracket and the surface electrophoresis process;

[0048] The PCB control board 31 adopts a potting glue process, which is beneficial to the heat dissipation of electronic components such as MCU and MOS, makes its installation firm and reliable, waterproof and dustproof, simple to disassemble and assemble, and convenient for repair.

[0049] Preferably in this embodiment, the PCB control board 31 adopts an integrated design of variable frequency drive and power control, which reduces the procurement cost of components; the control interface is designed with an input power supply, a 24V isolated output, a program burning port, and a three-phase input for the motor. Its integrated design improves the overall size of the machine body and reduces the manufacturing cost.

[0050] Preferably in this embodiment, the length of the PCB control board mounting housing 32 is shortened, making the water pump as a whole shorter, which is beneficial to saving space.

[0051] Preferably in this embodiment, the housing 211 and the stator assembly 23 are connected with an interference fit.

[0052] Preferably in this embodiment, the magnetic ring 221 adopts an anisotropic sintered ferrite multi-pole magnetic ring. The motor shaft 223, the bushing 224, and the magnetic ring 221 are an integrated mechanism and are manufactured by an injection molding process.

[0053] Preferably, in this embodiment, the stator assembly 23 adopts a pole-slot combination of 12 slots and 10 poles, effectively reducing the cogging torque, resulting in low vibration and low noise. Moreover, the back electromotive force of 12S10P is greatly improved, the temperature rise of the motor decreases, and the performance of the motor is extremely improved.

[0054] Preferably, in this embodiment, the iron core 231 is laminated by a number of silicon steel sheets, and the silicon steel sheet material uses silicon steel of model 50W470, which has low iron loss and good heat dissipation performance.

[0055] Preferably, in this embodiment, the insulating plastic skeleton 235 is wrapped around the coil 232 and the iron core 231 by a plastic coating process.

[0056] Preferably, in this embodiment, the coil 232 is connected in a star shape by a winding method of two series and two parallel, and is distributed in the 12 slots of the iron core 231, increasing the slot fill factor and making the working efficiency of the RO brushless diaphragm booster pump more efficient.

[0057] Preferably, in this embodiment, the stator assembly 3 adopts a stator injection molding process with a wall thickness of 0.5 MM. The stator assembly 3 not only meets the requirement of high insulation withstand voltage level, and the insulation withstand voltage can reach 1800 VAC for 1S, but also meets the requirement of the motor slot fill factor, making the brushless diaphragm booster pump work more stably and efficiently.

[0058] Preferably, in this embodiment, the stator assembly 23 uses PIN pins.

[0059] Preferably, in this embodiment, both the motor front end cover and the motor rear end cover 213 are provided with positioning flanges. The positioning flange on the motor front end cover is connected to the pump body 1, and the positioning flange on the motor rear end cover 213 is connected to the screw holes on the PCB control board mounting housing 32 through bolts, which can be more accurately matched with each other, is easy to assemble and convenient to repair.

[0060] Preferably, in this embodiment, several heat dissipation kylin fins are provided on the outside of the PCB control board mounting housing 32, potting glue is provided inside the PCB control board mounting housing 32, and thermal conductive glue is provided between the PCB control board 31 and the PCB control board mounting housing 32, which can greatly improve the heat dissipation function of the drive control part 3 and make it work more stably.

[0061] Preferably, in this embodiment, the potting glue, heat dissipation kylin fins, and thermal conductive glue provided on the PCB control board mounting housing 32 greatly improve the heat dissipation function of the drive control part 3 and make it work more stably.

[0062] Preferably, in this embodiment, the bearing at the connection between the motor shaft 223 and the pump body 1 uses a waterproof bearing, and an O-ring seal is provided in the bearing seat of the motor front end cover, so that there is no risk of water entering the motor cavity when the pump body works for a long time.

[0063] The above are only the preferred embodiments of the present utility model, and the protection scope of the present utility model is not limited to the above embodiments. All technical solutions falling within the concept of the present utility model belong to the protection scope of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements and refinements should also be regarded as within the protection scope of the present utility model.

Claims

1. A high-efficiency and energy-saving RO brushless diaphragm booster pump, characterized by: The pump body (1) comprises a pump body (1), wherein a bolt hole is provided on the pump body (1), and a motor assembly (2) is fixedly connected to the pump body (1) via bolts (11), wherein the motor assembly (2) is provided with a drive control assembly (3); The motor assembly (2) comprises a housing assembly (21), a rotor assembly (22), and a stator assembly (23); The housing assembly (21) comprises an outer shell (211), a support base (212), a motor rear end cover (213), a motor front end cover and a shockproof rubber pad (214); the outer shell (211) is fixedly connected to the support base (212); three circumferentially equidistant mounting through holes are provided on the outer shell (211) for fixedly connecting the motor rear end cover (213) and the motor front end cover to the outer shell (211); the shockproof rubber pad (214) is fixedly connected to the support base (212); and bearing seats are provided on the motor rear end cover (213) and the motor front end cover; The rotor assembly (22) comprises a magnetic ring (221), a bearing (222), a motor shaft (223) and a shaft sleeve (224); the motor shaft (223) is sleeved with the shaft sleeve (224) and the magnetic ring (221) in sequence from the inside to the outside, and the two ends of the motor shaft (223) are sleeved with bearings (222); the two ends of the motor shaft (223) extend to the outside through the central openings of the motor rear end cover (213) and the motor front end cover, respectively, and the motor shaft (223) extending from the motor front end cover is connected to the pump body (1); The stator assembly (23) comprises an iron core (231), a coil (232), a plug pin (233), a PCB adapter board (234) and an insulating plastic frame (235); the insulating plastic frame (235) is wrapped around the surface of the iron core (231); the coil (232) is wound around the iron core (231); one end of the plug pin (233) is fixed to the iron core (231); the other end is inserted into the PCB adapter board (234) and fixedly connected to the PCB adapter board (234); The drive control assembly (3) comprises a PCB control board (31) and a PCB control board mounting shell (32); the PCB control board (31) and the PCB control board mounting shell (32) are fixedly connected by bolts; The wall of the housing (211) is 2.5 mm and the outer diameter is 77 mm; The PCB control board (31) adopts a potting glue process.

2. The high-efficiency and energy-saving RO brushless diaphragm booster pump according to claim 1 is characterized in that: The housing (211) is interference-connected with the stator assembly (23).

3. The high-efficiency and energy-saving RO brushless diaphragm booster pump according to claim 1 is characterized in that: The magnetic ring (221) is a multi-pole magnetic ring of anisotropic sintered ferrite, and the motor shaft (223), the shaft sleeve (224) and the magnetic ring (221) are an integrated structure and are manufactured using an injection molding process.

4. The high-efficiency and energy-saving RO brushless diaphragm booster pump according to claim 1 is characterized in that: The stator assembly (23) adopts 12 slots and 10 poles for pole-slot matching.

5. The high-efficiency and energy-saving RO brushless diaphragm booster pump according to claim 1 is characterized in that: The iron core (231) is formed by stacking a plurality of silicon steel sheets.

6. The high-efficiency and energy-saving RO brushless diaphragm booster pump according to claim 1 is characterized in that: The insulating plastic frame (235) is wrapped around the coil (232) and the iron core (231) by a plastic wrapping process.

7. The high-efficiency and energy-saving RO brushless diaphragm booster pump according to claim 1 is characterized in that: The coils (232) are connected in a star shape by winding two series and two parallel.

8. The high-efficiency and energy-saving RO brushless diaphragm booster pump according to claim 1 is characterized in that: The stator component (23) adopts PIN needles.

9. The high-efficiency and energy-saving RO brushless diaphragm booster pump according to claim 1 is characterized in that: The motor front end cover and the motor rear end cover (213) are both provided with positioning flanges, the positioning flange on the motor front end cover is connected to the pump body (1), and the positioning flange on the motor rear end cover (213) is connected to the screw holes on the PCB control board mounting housing (32) through bolts.

10. The high-efficiency and energy-saving RO brushless diaphragm booster pump according to claim 1 is characterized in that: A plurality of heat dissipation sheets are arranged on the outside of the PCB control board installation shell (32), a potting glue is arranged inside the PCB control board installation shell (32), and a heat conductive glue is arranged between the PCB control board (31) and the PCB control board installation shell (32).

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