Diaphragm pump and water treatment equipment

Abstract

The utility model discloses a diaphragm pump and water treatment equipment relates to booster pump technical field, wherein the diaphragm pump includes brushless motor and pump head subassembly, the brushless motor includes plastic package casing, stator assembly and rotor assembly, stator assembly is embedded in the plastic package casing, plastic package casing forms mounting cavity, rotor assembly is rotatingly provided in mounting cavity, and the pump head subassembly is fixed in the mounting cavity. The pump head assembly is installed on the plastic package shell and is in transmission connection with the rotor assembly. According to the technical scheme, the brushless motor is adopted as a power source to drive the pump head assembly to act, and the brushless motor replaces a mechanical reversing structure in an electronic reversing mode, so that the tail length of the brushless motor can be greatly reduced, the size of the diaphragm pump is integrally reduced, and the service life of the diaphragm pump is prolonged. And the occupation of the diaphragm pump on the whole installation space of the water treatment equipment is reduced.

Description

Technical Field

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

[0002] A diaphragm pump is a common booster pump. The diaphragm pump drives the diaphragm to move periodically through a pendulum seat that swings up and down, causing the volume of the booster chamber between the diaphragm and the water valve seat to change, thereby boosting the water in the booster chamber. The diaphragm pump is usually used in water treatment equipment such as water purifiers and water heaters. However, existing diaphragm pumps usually use a brush motor to drive the movement of the pendulum seat. Due to the presence of a mechanical commutation structure in the brush motor, the current brush motor is generally larger in size, which causes the diaphragm pump to occupy a larger installation space for the entire machine, restricting the development of miniaturization of water treatment equipment. Utility Model Content

[0003] The main purpose of the utility model is to provide a diaphragm pump and water treatment equipment, aiming to solve the problem that the existing brush motor diaphragm pump is large in size, resulting in it occupying more installation space for the whole machine.

[0004] To achieve the above purpose, the diaphragm pump proposed by the utility model includes:

[0005] A brushless motor comprises a plastic-encapsulated housing, a stator assembly and a rotor assembly, wherein the stator assembly is embedded in the plastic-encapsulated housing, the plastic-encapsulated housing is formed with an installation cavity, and the rotor assembly is rotatably arranged in the installation cavity; and

[0006] The pump head assembly is mounted on the plastic-sealed housing and is transmission-connected to the rotor assembly.

[0007] In one embodiment, the stator assembly includes a plurality of stator cores arranged around the mounting cavity, an insulating structure is provided on the circumferential side of the stator teeth in the stator core, and a stator winding is wound on the insulating structure.

[0008] In one embodiment, the insulating structure is formed with a groove arranged around the stator teeth;

[0009] The stator winding is arranged in the groove.

[0010] In one embodiment, the stator assembly includes a bar-shaped stator disposed around the mounting cavity, and the bar-shaped stator includes a plurality of stator cores.

[0011] In one embodiment, the plastic-sealed housing is further formed with a mounting groove disposed toward the pump head assembly, and a side wall of the mounting groove is formed to penetrate outward to form a wire outlet channel;

[0012] The stator assembly has a plurality of wiring parts extending into the installation slot, and the plurality of wiring parts are connected to the outside through a plurality of wires passing through the outlet channel.

[0013] In one embodiment, the bottom of the mounting groove passes through the mounting cavity;

[0014] The pump head assembly comprises a pump head end cover, and the pump head end cover has a positioning protrusion, and the positioning protrusion is adapted to extend into the installation groove.

[0015] In one embodiment, a wire outlet clamp structure is provided in the wire outlet channel, and the wire outlet clamp structure has two opposite clamping parts, and the two clamping parts are arranged to clamp a plurality of the wires, and at least one of the clamping parts is detachable.

[0016] In one embodiment, the outlet channel penetrates toward the pump head assembly to form an outlet groove;

[0017] The two clamping parts are sequentially clamped into the wire outlet groove along the opening direction of the wire outlet groove, wherein the clamping part on the outer side abuts against the pump head assembly.

[0018] In one embodiment, the rotor assembly includes a magnetic part and a rotor core, wherein a gap is formed between the magnetic part and the rotor core, and a plastic sealant is disposed in the gap.

[0019] The utility model also provides a water treatment device, which comprises the diaphragm pump as described in any one of the above items.

[0020] The technical solution of the present utility model adopts a brushless motor as a power source to drive the pump head assembly. Since the brushless motor replaces the mechanical commutation structure with an electronic commutation structure, the tail length of the brushless motor can be greatly reduced while meeting the output power requirements, thereby reducing the volume of the diaphragm pump as a whole (it has been verified that the volume of the brushless motor diaphragm pump is reduced by more than 20% compared to the brushed motor diaphragm pump), which also reduces the diaphragm pump's occupancy of the installation space of the water treatment equipment.

[0021] Not only that, due to the change in commutation method, the service life of brushless motors has been significantly improved compared to brushed motors. It can also greatly reduce the working noise and heat generation of the diaphragm pump. The reduction in heat generation has a positive impact on the improvement of the working efficiency of brushless motors.

[0022] Moreover, the stator assembly in the present embodiment is a live component, and is embedded in a plastic shell. Due to the covering and insulating effect of the plastic shell, the insulation protection performance of the brushless motor is greatly improved, and abnormal conditions such as rusting of the stator assembly and poor insulation caused by water leakage, humid environment, etc. can be avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0024] Figure 1 A schematic structural diagram of an embodiment of a diaphragm pump provided by the utility model;

[0025] Figure 2 for Figure 1 Structural diagram of the middle section AA;

[0026] Figure 3 for Figure 1 Schematic diagram of the exploded structure of the brushless motor and the pump head end cover in the pump head assembly;

[0027] Figure 4 for Figure 3 A schematic diagram of the structure of the plastic-encapsulated shell;

[0028] Figure 5 for Figure 4 A schematic diagram of the structure of the stator assembly embedded in the plastic-sealed housing;

[0029] Figure 6 for Figure 5 A schematic diagram of the top view of the stator assembly;

[0030] Figure 7 for Figure 3 Schematic diagram of the structure of the middle rotor assembly (excluding plastic sealing glue).

[0031] Description of Figure Numbers:

[0032] 100, diaphragm pump; 1, brushless motor; 11, plastic-sealed shell; 11a, installation cavity; 11b, installation slot; 11c, outlet channel; 111c, outlet slot; 12, stator assembly; 12a, bar stator; 121, stator core; 1211, stator teeth; 122, insulation structure; 122a, groove; 123, outlet assembly; 1231, wiring part; 13, rotor assembly; 131, magnetic part; 132, rotor core; 2, pump head assembly; 21, pump housing; 22, pump housing bracket; 23, pump head end cover; 24, valve seat; 25, diaphragm; 26, balance wheel seat; 261, balance wheel; 27, eccentric wheel; 3, outlet clamp structure; 31, clamping part; 4, mounting bracket; 41, shock-absorbing foot pad.

[0033] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), 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.

[0036] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. 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 contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0037] The diaphragm pump is a common booster pump. The diaphragm pump drives the diaphragm to move periodically through the up and down swinging balance wheel seat, so that the volume of the booster chamber between the diaphragm and the water valve seat changes, thereby boosting the water in the booster chamber. It is usually used in water treatment equipment such as water purifiers and water heaters.

[0038] However, existing diaphragm pumps usually use a brushed motor to drive the balance wheel seat to move. In the brushed motor, the stator is the outer shell magnet, and the rotor is composed of multiple sets of coil windings. Controlling the power supply to one set of coil windings will generate a magnetic field, and this magnetic field and the fixed magnetic field of the outer shell magnet produce a force to make the rotor rotate a certain angle, and then the next set of coil windings is controlled to be energized to make the rotor continue to rotate a certain angle. This cycle is repeated to drive the rotor to rotate, wherein the multiple sets of coil windings are connected to the commutator, and the commutator abuts against the carbon brushes. During the rotation of the rotor, the commutator also rotates accordingly, and the alternating change of the current direction in the multiple sets of coil windings is achieved by the continuous contact between the carbon brushes and the commutator. Therefore, it is not difficult to understand that the existence of the mechanical commutation structure composed of carbon brushes and commutator leads to the current brush motor being generally larger in size, which causes the diaphragm pump to occupy a larger installation space of the whole machine, restricting the development of miniaturization of water treatment equipment. Moreover, since the carbon brush is a consumable part, the life of the brush motor cannot exceed 4000 hours. The carbon powder produced by the wear of the carbon brush will cause the insulation strength of the whole machine to decrease, and the wear process will generate heat and generate loud noise. Moreover, the power supply of the brush motor needs to be completed through an external DC power adapter. The existence of the DC power adapter will undoubtedly increase the occupation of the installation space of the whole machine by the water pump system.

[0039] Analysis of the causes of the above problems shows that the existence of the mechanical commutation structure of the brushed motor makes it difficult to reduce its size, and the mechanical commutation structure is an indispensable component of the brushed motor. Therefore, other drive structures can be considered to replace the brushed motor. In the classification of drive motors, brushless motors can be used as a superior alternative to brushed motors in diaphragm pumps to solve the above problems.

[0040] In view of this, the utility model proposes a diaphragm pump and water treatment equipment, which can at least solve the problem that the existing brush motor diaphragm pump is large in size, resulting in it occupying more installation space for the whole machine, wherein: Figure 1 A schematic structural diagram of an embodiment of a diaphragm pump provided by the utility model; Figure 2 for Figure 1 Structural diagram of the middle section AA; Figure 3 for Figure 1 Schematic diagram of the exploded structure of the brushless motor and the pump head end cover in the pump head assembly; Figure 4 for Figure 3 A schematic diagram of the structure of the plastic-encapsulated shell; Figure 5 for Figure 4 A schematic diagram of the structure of the stator assembly embedded in the plastic-sealed housing; Figure 6 for Figure 5 A schematic diagram of the top view of the stator assembly; Figure 7 for Figure 3 Schematic diagram of the structure of the middle rotor assembly (excluding plastic sealing glue).

[0041] See also Figures 1 to 4 In one embodiment of the utility model, the diaphragm pump 100 includes a brushless motor 1 and a pump head assembly 2. The brushless motor 1 includes a plastic shell 11, a stator assembly 12 and a rotor assembly 13. The stator assembly 12 is embedded in the plastic shell 11. The plastic shell 11 is formed with an installation cavity 11a. The rotor assembly 13 is rotatably arranged in the installation cavity 11a. The pump head assembly 2 is installed in the plastic shell 11 and is transmission-connected to the rotor assembly 13.

[0042] Among them, "the stator assembly 12 is embedded in the plastic shell 11" means that the plastic shell 11 is formed by plastic molding on the outside of the stator assembly 12. After molding, the plastic shell 11 covers the stator assembly 12. It can be understood that in order to facilitate power supply, the stator assembly 12 usually reserves a wiring portion 1231 to the outside of the plastic shell 11. The external power supply supplies power to the stator assembly 12 in the plastic shell 11 through the wiring portion 1231. The material of the plastic shell 11 can usually be selected from BMC material, of course, it can also be other plastic materials.

[0043] Among them, the types of brushless motors 1 generally include inner rotor motors and outer rotor motors. Considering that the pump head assembly 2 in this embodiment is installed in the plastic shell 11 of the brushless motor 1, and the rotor assembly 13 is rotatably installed in the installation cavity 11a in the plastic shell 11, it can be determined that the brushless motor 1 mentioned in this embodiment is an inner rotor motor, and the stator assembly 12 in the plastic shell 11 is arranged around the installation cavity 11a; in the brushless motor 1, the stator assembly 12 includes multiple groups of stator windings, and the alternating change of current direction in the multiple groups of stator windings is usually achieved through electronic commutation structures such as Hall sensors.

[0044] Among them, the diaphragm pump 100 in the embodiment of the present application realizes liquid pressurization through the reciprocating motion of the diaphragm 25 in the pump head assembly 2, and "the pump head assembly 2 is transmission connected to the rotor assembly 13" generally refers to the diaphragm 25 therein being transmission connected to the rotor assembly 13. There are various transmission connection methods between the diaphragm 25 and the rotor assembly 13, as long as the rotational motion of the rotor assembly 13 can be converted into the reciprocating motion of the diaphragm 25, and this embodiment does not limit this.

[0045] The technical solution of the present utility model adopts a brushless motor 1 as a power source to drive the pump head assembly 2. Since the brushless motor 1 replaces the mechanical commutation structure with an electronic commutation structure, the tail length of the brushless motor 1 can be greatly reduced while meeting the output power requirements, thereby reducing the volume of the diaphragm pump 100 as a whole (it has been verified that the volume of the brushless motor diaphragm pump is reduced by more than 20% compared to the brushed motor diaphragm pump), that is, reducing the diaphragm pump 100 The installation space occupied by the whole water treatment equipment.

[0046] Moreover, due to the change in commutation method, the service life of the brushless motor 1 is significantly improved compared to the brushed motor, and the working noise and heat generation of the diaphragm pump 100 can be greatly reduced. The reduction in heat generation has a positive effect on improving the working efficiency of the brushless motor 1.

[0047] Moreover, the stator assembly 12 in the present embodiment is a live component, and is embedded in the plastic casing 11. Due to the covering and insulating effect of the plastic casing 11, the insulation protection performance of the brushless motor 1 is greatly improved, and abnormal conditions such as rust and poor insulation of the stator assembly 12 caused by water leakage, humid environment, etc. can be avoided.

[0048] For the specific structure of the pump head assembly 2, please refer to Figure 1 and Figure 2 The pump head assembly 2 in this embodiment includes a pump housing 21, a pump housing bracket 22 and a pump head end cover 23. The pump housing bracket 22 is connected between the pump housing 21 and the pump head end cover 23. The pump housing 21, the pump housing bracket 22 and the pump head end cover 23 are arranged to form a pump head space. The pump head assembly 2 also includes a valve seat 24, a diaphragm 25 and a balance wheel seat 26 accommodated in the pump head space.

[0049] The pump housing 21 and the pump housing support 22 are arranged to form a pump head cavity, and the valve seat 24 and the diaphragm 25 are both accommodated in the pump head cavity. The balance wheel seat 26 is arranged on the side of the pump housing support 22 away from the pump housing 21, and passes through the pump housing support 22 to connect the diaphragm 25.

[0050] The pump housing 21 abuts against the valve seat 24, and the pump housing bracket 22 receives the diaphragm 25. The pump housing 21 and the pump housing bracket 22 cooperate to clamp the valve seat 24 and the diaphragm 25 in the pump head cavity to stabilize the connection between the valve seat 24 and the diaphragm 25.

[0051] The balance wheel seat 26 is arranged on the pump head end cover 23 and includes a plurality of balance wheels 261. The balance wheel 261 is fixedly connected to the surface of the diaphragm 25 away from the valve seat 24. The balance wheel 261 can reciprocate along the axial direction of the diaphragm pump 100 to drive the diaphragm 25 to reciprocate, thereby pressurizing the water entering the pump head cavity.

[0052] At this point, it can be understood that, in this specific embodiment, the reciprocating motion of the diaphragm 25 is achieved by the axial reciprocating motion of the balance wheel 261 on the balance wheel seat 26, and the multiple balance wheels 261 are commonly abutted against the eccentric wheel 27 set on the output shaft of the rotor assembly 13. As the rotor assembly 13 rotates, the eccentric wheel 27 rotates accordingly to circulate and drive the multiple balance wheels 261 to move.

[0053] See also Figure 5 and Figure 6In some embodiments, the stator assembly 12 includes a plurality of stator cores 121 arranged around the mounting cavity 11a, an insulating structure 122 is provided around the stator teeth 1211 in the stator core 121, and a stator winding is wound on the insulating structure 122.

[0054] The instruction manual is attached Figure 5 and Figure 6 The stator winding is not shown in the figure, but it does not affect the understanding of the technical solution; the material of the stator core 121 includes but is not limited to nickel-plated alloy, alumina ceramic and other materials. The stator teeth 1211 are a unique structure in the stator core 121. In the inner rotor motor, the stator teeth 1211 of the stator core 121 extend toward the installation cavity 11a to provide an installation basis for the stator winding; the insulating structure 122 is arranged on the side of the stator teeth 1211, and the stator winding is wound around the insulating structure 122. It can be understood that the insulating structure 122 is arranged between the stator winding and the stator teeth 1211, and the material of the insulating structure 122 is an insulating material, which is not limited in this embodiment.

[0055] Among them, in the existing motor stator production scenario, the winding coil is directly wound on the stator teeth 1211. Therefore, the insulation between the winding coil and the stator teeth 1211 is completely achieved through the insulating varnish layer on the winding enameled wire. The insulating varnish layer is relatively thin. Once it is damaged during the winding process or subsequent use, it may cause leakage problems between the winding coil and the stator core, thereby causing the motor to fail.

[0056] According to the above technical solution, an insulating structure 122 is arranged between the stator winding and the stator teeth 1211. Even if the stator winding is damaged during the winding process or subsequent use, the center core of the stator winding enameled wire will not be directly connected to the stator core 121, which can avoid the leakage between the enameled wire and the stator core 121, thereby improving the protection level of the brushless motor 1.

[0057] For further information, see Figure 5 and Figure 6 In some embodiments, the insulating structure 122 is formed with a groove 122 a arranged around the stator teeth 1211; the stator winding is arranged in the groove 122 a.

[0058] The groove 122a may be formed by directly machining the insulating structure 122, or by forming an extension structure at both ends of the insulating structure 122 to define the groove 122a. This embodiment does not limit this.

[0059] According to the above technical solution, through the setting of the groove 122a in the insulating structure 122, during the winding process of the stator winding, the groove 122a can provide a limit for the stator winding, which can effectively prevent the enameled wire from being wound around the outside of the stator tooth 1211 and causing winding failure. On the other hand, the existence of the groove 122a can increase the winding thickness of the enameled wire, that is, multiple sets of coils can be wound, thereby increasing the magnetic flux that the stator winding can generate.

[0060] In the above embodiment, the multiple stator cores 121 in the stator assembly 12 are arranged around the installation cavity 11a, and the multiple stator cores 121 can be integrally formed into a ring-shaped stator. However, the winding of the ring-shaped stator is difficult, the winding time is long, and the production efficiency is low. In view of this, in some embodiments, the stator assembly 12 includes a bar stator 12a arranged around the installation cavity 11a, and the bar stator 12a includes a plurality of stator cores 121.

[0061] Among them, the "bar" of the bar stator 12a means that before the winding is completed, the stator is in a bar shape. After the winding is completed, the stator is rolled into a ring shape by aligning the head and tail, and then the stator is maintained in a ring shape by welding or the like; two adjacent stator cores 121 in the bar stator 12a are connected by a stator yoke.

[0062] According to the above technical solution, the bar stator 12a is used as the winding basis of the stator winding. Before winding, the bar stator 12a can be spread out, and multiple stator teeth 1211 in the bar stator 12a can be wound at the same time, which can reduce the difficulty of winding and shorten the winding time.

[0063] See also Figure 5 and Figure 6 In some embodiments, the stator assembly includes an outlet assembly, and the outlet assembly 123 is set in a part of the stator core. The outlet assembly 123 has a plurality of wiring portions 1231. The outlet assembly 123 can provide a basis for the connection between the stator winding and the plurality of wiring portions 1231, thereby facilitating the maintenance of the positions of the plurality of wiring portions 1231, and is also beneficial to the subsequent molding of the plastic package shell 11.

[0064] See also Figure 3 and Figure 4 In some embodiments, the plastic package housing 11 is further formed with a mounting groove 11b disposed toward the pump head assembly 2, and the side wall of the mounting groove 11b is formed with an outlet channel 11c extending outward;

[0065] The stator assembly 12 has a plurality of wiring portions 1231 extending into the mounting groove 11 b , and the plurality of wiring portions 1231 are connected to the outside through a plurality of wires passing through the outlet channel 11 c .

[0066] Among them, the installation groove 11b is arranged toward the pump head assembly 2, so that the pump head assembly 2 can cover the installation groove 11b after being installed in the plastic shell 11. Therefore, it can be understood that the installation groove 11b is usually arranged at the end where the plastic shell 11 is connected to the pump head assembly 2; the side wall of the installation groove 11b penetrates outward to form an outlet channel 11c, wherein the outlet channel 11c is only used for the wire to pass through the plastic shell 11, and it only needs to be able to connect to the installation groove 11b.

[0067] Among them, the main function of the installation groove 11b is to provide a path for multiple wiring parts 1231 to connect to the outside through the outlet channel 11c. Therefore, this embodiment does not limit the specific shape of the installation groove 11b, and the positional relationship and connection relationship between the installation groove 11b and the installation cavity 11a are not limited. For example, the installation groove 11b can be set on the plastic shell 11 independently of the installation cavity 11a.

[0068] The specific number of the connection parts 1231 is determined according to the number of phases of the stator assembly 12. For example, when the stator assembly 12 is powered by three phases, the number of the connection parts 1231 is set to three to supply power to multiple stator windings in each phase.

[0069] According to the above technical solution, multiple wiring parts 1231 extend out of the plastic shell 11 to the installation groove 11b, and are transferred to the external power supply structure through multiple wires. Before the pump head assembly 2 is installed, the installation groove 11b is in an exposed state, which is convenient for operators to connect wires to the multiple wiring parts 1231. After the pump head assembly 2 is installed, the installation groove 11b is in a shielded state, which can avoid the wiring parts 1231 from being exposed, thereby improving the safety level of the diaphragm pump 100; because the stator assembly 12 is embedded in the plastic shell 11, it only extends out of the plastic shell 11 through multiple wiring parts 1231. The wiring parts 1231 are transferred to the outside through wires, which can prevent the wiring parts 1231 from being pulled and broken (the wiring parts 1231 are difficult to repair if they are broken).

[0070] For further information, see Figure 4 In some embodiments, the bottom of the mounting groove 11b passes through the mounting cavity 11a; the pump head assembly 2 includes a pump head end cover 23, and the pump head end cover 23 has a positioning protrusion, which is adapted to extend into the mounting groove 11b.

[0071] The bottom of the installation groove 11b penetrates the installation cavity 11a, which means that the rotor assembly 13 in the installation cavity 11a is connected to the pump head assembly 2 through the installation groove 11b. The pump head end cover 23 in the pump head assembly 2 is the shell part that is installed and connected with the plastic package shell 11. The pump head end cover 23 is usually used as a bearing to receive the output shaft of the rotor assembly 13.

[0072] According to the above technical solution, the pump head end cover 23 in the pump head assembly 2 is arranged by extending the positioning protrusion formed thereon into the installation groove 11b, thereby forming a positioning effect, so that the operator or equipment can connect and fix the pump head end cover 23 to the plastic package shell 11.

[0073] It is understandable that the wires connected to the wiring portion 1231 need to be fixed in the wire outlet channel 11c, so as to prevent the wires from being pulled and affecting the safety of the wiring portion 1231. In view of this, in other embodiments, an outlet card structure 3 is provided in the outlet channel 11c, and the outlet card structure 3 has two opposite clamping portions 31, and the two clamping portions 31 are arranged to clamp multiple wires, and at least one of the clamping portions 31 is detachable.

[0074] The outlet clamp structure 3 can be arranged in the outlet channel 11c in a fixed connection or a detachable connection. At least one of the two clamping parts 31 is detachable, and the detachable connection method can be a threaded connection or a buckle connection. This embodiment does not limit the detachable method of the clamping part 31.

[0075] According to the above technical solution, the outlet card structure 3 is arranged in the outlet channel 11c and includes two opposite clamping parts 31. The two clamping parts 31 can clamp the wires therebetween, thereby fixing the wires in the outlet channel 11c. The external pulling force can only be transmitted along the wires to the outlet card structure 3 and cannot be further transmitted to the wiring part 1231, thereby ensuring the safety of the wiring part 1231. Moreover, since at least one of the clamping parts 31 is detachable, the wires can be taken out of the outlet card structure 3 so as to connect and replace the wires.

[0076] For further information, see Figure 3 and Figure 4 In some embodiments, the outlet channel 11c passes through the pump head assembly 2 to form an outlet groove 111c; the two clamping portions 31 are sequentially clamped into the outlet groove 111c along the opening direction of the outlet groove 111c, wherein the outer clamping portion 31 abuts against the pump head assembly 2.

[0077] Among them, the wire outlet channel 11c is arranged on the plastic shell 11, and its direction toward the pump head assembly 2 is generally the axial direction of the diaphragm pump 100, so the opening direction of the wire outlet groove 111c is axial, and the direction in which the wire outlet groove 111c connects the mounting groove 11b with the outside is the extension direction of the wire outlet groove 111c, and the extension direction generally belongs to the radial direction of the diaphragm pump 100.

[0078] Among them, "the two clamping portions 31 are sequentially clamped into the wire outlet groove 111c along the opening direction of the wire outlet groove 111c" means that, before installing the pump head assembly 2, the two clamping portions 31 can be clamped into the wire outlet groove 111c along the above-mentioned axial direction, and at the same time can obtain a limiting effect in other directions; "the clamping portion 31 on the outside" refers to the clamping portion 31 on the outside of the wire outlet groove 111c, which is closer to the pump head assembly 2.

[0079] According to the above technical scheme, the wire can be clamped between the two clamping parts 31 by axially clamping the two clamping parts 31 into the wire outlet groove 111c in sequence. After the pump head assembly 2 is subsequently installed on the plastic shell 11, the pump head assembly 2 can axially shield the wire outlet groove 111c, thereby abutting against the clamping part 31 on the outside, and then the guide pressure between the two clamping parts 31 is fixed. The fixing method for the wire in the present technical scheme is relatively simple and easy to process and realize, and it is also convenient to replace the wire.

[0080] Specifically, see Figure 1 and Figure 3 The pump head assembly 2 includes a pump head end cover 23, and the pump head end cover 23 abuts against the clamping portion 31 on the outside.

[0081] See also Figure 3 and Figure 7 In some embodiments, the rotor assembly 13 includes a magnetic portion 131 and a rotor core 132 , wherein a gap is formed between the magnetic portion 131 and the rotor core 132 , and a plastic sealant is disposed in the gap.

[0082] Among them, in the brushless motor 1, the magnetic part 131 is usually set as a permanent magnet, the rotor core 132 is used for installing the magnetic part 131, and the rotor core is usually also formed with an output shaft, and the brushless motor 1 is connected to the pump head assembly 2 through the output shaft.

[0083] According to the above technical solution, by filling the gap between the magnetic part 131 and the rotor core 132 with plastic molding compound, the magnetic part 131 and the rotor core 132 can be connected into an integrated structure. On the one hand, the strength of the rotor assembly 13 is enhanced, which is conducive to outputting a higher rotation speed. On the other hand, the protection performance of the rotor assembly 13 can also be enhanced.

[0084] In some embodiments, the diaphragm pump 100 also includes a mounting bracket 4, which is fixed to the plastic shell 11 by a clamp to increase the stability of the installation connection between the diaphragm pump 100 and the external structure. Shock-absorbing pads 41 for abutting against the external structure are respectively installed around the mounting bracket 4, wherein the shock-absorbing pads 41 can be made of a material with good elasticity such as silicone and rubber, and are used to play a buffering role. The shock-absorbing pads 41 can reduce the noise generated when the diaphragm pump 100 is working, and can effectively suppress the vibration caused by the increase in the water pump flux.

[0085] It should be noted that the present embodiment does not limit the number of clamps and shock-absorbing pads 41. Figure 1 and Figure 3 The mounting bracket 4 includes two mounting ends located on both sides of the brushless motor 1, each mounting end extends along the axial direction of the diaphragm pump 100 to the side of the pump head blocker, and three shock-absorbing foot pads 41 are arranged axially on each mounting end.

[0086] In one embodiment, a connecting hole portion is provided corresponding to each mounting bracket 4 and corresponding to each shock-absorbing foot pad 41 , and the mounting bracket 4 can be mounted to the external structure by passing a connecting bolt through the connecting hole portion.

[0087] The utility model also includes a water treatment device, which includes a diaphragm pump 100 as described above. The specific structure of the diaphragm pump 100 refers to the above embodiments. Since the water treatment device adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by all the technical solutions of all the above embodiments, which will not be repeated here.

[0088] In the present invention, the specific type of water treatment equipment is not limited. For example, the water treatment equipment can be a water purifier, a water purifier, a filter, a coffee machine, etc. In a specific embodiment, the water treatment equipment includes a water purifier. The water purifier is generally used in home and commercial environments. The diaphragm pump 100 is arranged in the water purifier. On the one hand, it can improve the suction efficiency of the water purifier and make the water purification speed faster. On the other hand, it can utilize the low noise and small vibration characteristics of the diaphragm pump 100 to meet the user's usage requirements. On the other hand, it can utilize the insulation protection characteristics of the plastic shell 11 of the brushless motor 1 to improve the safety performance of the water purifier.

[0089] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A diaphragm pump, characterized in that: include: A brushless motor comprises a plastic-encapsulated housing, a stator assembly and a rotor assembly, wherein the stator assembly is embedded in the plastic-encapsulated housing, the plastic-encapsulated housing is formed with an installation cavity, and the rotor assembly is rotatably arranged in the installation cavity; and, The pump head assembly is mounted on the plastic-sealed housing and is transmission-connected to the rotor assembly.

2. The diaphragm pump according to claim 1, characterized in that The stator assembly includes a plurality of stator cores arranged around the installation cavity, an insulating structure is provided on the circumferential side of the stator teeth in the stator core, and a stator winding is wound on the insulating structure.

3. The diaphragm pump according to claim 2, characterized in that The insulating structure is formed with a groove arranged around the stator teeth; The stator winding is arranged in the groove.

4. The diaphragm pump according to claim 2, characterized in that The stator assembly includes a bar-shaped stator disposed around the installation cavity, and the bar-shaped stator includes a plurality of stator cores.

5. The diaphragm pump according to claim 1, characterized in that: The plastic-sealed housing is also formed with a mounting groove disposed toward the pump head assembly, and a side wall of the mounting groove is formed with a wire outlet channel extending outward; The stator assembly has a plurality of wiring parts extending into the installation slot, and the plurality of wiring parts are connected to the outside through a plurality of wires passing through the outlet channel.

6. The diaphragm pump according to claim 5, characterized in that The bottom of the mounting groove passes through the mounting cavity; The pump head assembly comprises a pump head end cover, and the pump head end cover has a positioning protrusion, and the positioning protrusion is adapted to extend into the installation groove.

7. The diaphragm pump according to claim 5, characterized in that An outlet clamp structure is provided in the outlet channel. The outlet clamp structure has two opposite clamping parts. The two clamping parts are arranged to clamp a plurality of the wires. At least one of the clamping parts is detachable.

8. The diaphragm pump according to claim 7, characterized in that The outlet channel passes through toward the pump head assembly to form an outlet groove; The two clamping parts are sequentially clamped into the wire outlet groove along the opening direction of the wire outlet groove, wherein the clamping part on the outer side abuts against the pump head assembly.

9. The diaphragm pump according to claim 1, characterized in that: The rotor assembly includes a magnetic part and a rotor core, wherein a gap is formed between the magnetic part and the rotor core, and plastic sealing glue is arranged in the gap.

10. A water treatment device, characterized in that: Comprising a diaphragm pump as claimed in any one of claims 1 to 9.

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