Diaphragm pump and water treatment equipment

Abstract

The utility model discloses a diaphragm pump and water treatment equipment, and relates to the technical field of water treatment.The diaphragm pump comprises a valve seat and a diaphragm, and the valve seat is concavely provided with a plurality of containing grooves arranged at intervals; the diaphragm is arranged on the side, provided with the containing grooves, of the valve seat, and the diaphragm and the containing grooves jointly define a plurality of pressurizing cavities. Wherein a sealing structure is arranged between the valve seat and the diaphragm, the sealing structure comprises a plurality of first sealing structures and a second sealing structure, the plurality of first sealing structures are correspondingly and annularly arranged on the peripheries of the plurality of accommodating grooves, and the second sealing structure is annularly arranged on the peripheries of the plurality of accommodating grooves and the plurality of first sealing structures; according to the diaphragm pump, the double sealing structures are arranged, so that isolation and sealing between the two adjacent booster cavities can be guaranteed, double sealing guarantee is provided for protecting external circuit control elements, and the diaphragm pump is good in sealing performance.

Description

Technical Field

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

[0002] At present, in order to ensure the flow rate in the boosting chamber during operation and avoid water overflow in the boosting chamber to damage the circuit control components, some electric diaphragm pumps place the sealing ring between the diaphragm and the middle plate and achieve sealing through squeezing the pump casing. The sealing ring is easy to slip during the compression process of the pump casing, causing the sealing ring to deviate from the predetermined installation position, resulting in the sealing ring being crushed and unable to play a sealing role. Some pump covers are deformed during installation and cannot press down multiple sealing rings, diaphragms and other sealing components to ensure the sealing effect. Therefore, the sealing problem of the diaphragm pump is an issue that needs to be solved urgently. Utility Model Content

[0003] The main purpose of the utility model is to provide a diaphragm pump and water treatment equipment, aiming to provide a diaphragm pump with good sealing performance.

[0004] In order to achieve the above-mentioned object, the diaphragm pump proposed in the utility model comprises:

[0005] A valve seat, wherein the valve seat is recessed with a plurality of accommodating grooves arranged at intervals; and

[0006] A diaphragm is disposed on one side of the valve seat where the plurality of accommodating grooves are disposed, and is enclosed with the plurality of accommodating grooves to form a plurality of pressurizing chambers;

[0007] Wherein, a sealing structure is arranged between the valve seat and the diaphragm, and the sealing structure includes a plurality of first sealing structures and a second sealing structure, wherein the plurality of first sealing structures are correspondingly arranged around the periphery of the plurality of accommodating grooves, and the second sealing structure is correspondingly arranged around the periphery of the plurality of accommodating grooves and the first sealing structure.

[0008] In one embodiment, the plurality of first sealing structures include a plurality of first sealing portions disposed on the valve seat, and the second sealing structure includes a second sealing portion disposed on the valve seat.

[0009] In one embodiment, the first sealing portion includes a first rib protruding from a side of the valve seat facing the diaphragm.

[0010] In one embodiment, the plurality of first ribs forming the plurality of first sealing portions are connected to each other to form a first rib structure.

[0011] In one embodiment, the plurality of accommodating grooves are arranged at intervals along the circumference of the valve seat;

[0012] The first convex rib structure includes an inner annular convex rib, an outer annular convex rib, and a plurality of connecting convex ribs, wherein the inner annular convex rib is arranged in the inner surrounding area of ​​the plurality of accommodating grooves, and the outer annular convex rib is arranged in the outer peripheral area of ​​the plurality of accommodating grooves, and each of the connecting convex ribs is connected between the inner annular convex rib and the outer annular convex rib, and is located at the interval between two adjacent accommodating grooves.

[0013] In one embodiment, the second sealing portion includes a second rib protruding from a side of the valve seat facing the diaphragm.

[0014] In one embodiment, an annular groove is provided on a side of the valve seat facing the diaphragm, the annular groove is arranged around the periphery of the plurality of first sealing portions, and the second sealing portion is arranged at the bottom of the annular groove.

[0015] In one embodiment, the diaphragm pump further comprises a mounting bracket disposed on a side of the valve seat facing the diaphragm;

[0016] The diaphragm is arranged between the mounting bracket and the valve seat.

[0017] In one embodiment, a mounting groove is recessed on a side of the mounting bracket facing the valve seat, and a plurality of through holes are penetrated through the bottom of the mounting groove;

[0018] The diaphragm is accommodated in the mounting groove, and the diaphragm comprises a bottom and an annular side portion extending from the outer periphery of the bottom toward the valve seat;

[0019] The valve seat has a side wall arranged on the inner side of the annular side portion, and the annular side portion is sandwiched between the side wall of the valve seat and the inner side wall of the mounting groove.

[0020] In one embodiment, the diaphragm pump further comprises:

[0021] A pump cover is arranged on a side of the valve seat away from the diaphragm to enclose the valve seat to form a water inlet cavity and a water outlet cavity that are spaced apart from each other, a receiving groove is provided on the pump cover, a water inlet and a water outlet are provided on the inner wall of the receiving groove, the water inlet is communicated with the water outlet cavity, and the water outlet is communicated with the water inlet cavity; and,

[0022] A pressure relief assembly, disposed in the accommodating tank, for connecting and disconnecting the water inlet and the water outlet;

[0023] A third sealing structure is provided in the accommodating groove, and the third sealing structure is provided on one side of the water inlet and the water outlet close to the notch of the accommodating groove, and the third sealing structure is provided between the pressure relief component and the hole wall of the accommodating groove to seal the two.

[0024] In one embodiment, the third sealing structure includes a third sealing portion and a fourth sealing portion sequentially arranged along a depth direction of the receiving groove.

[0025] In one embodiment, the water inlet and the water outlet are provided at the bottom of the containing tank;

[0026] The third sealing portion is used to seal the pressure relief component with the bottom of the accommodating groove, and the fourth sealing portion is used to seal the outer peripheral wall of the pressure relief component with the side wall of the accommodating groove.

[0027] In one embodiment, the third sealing portion includes a sealing gasket, which is located between the pressure relief assembly and the bottom of the accommodating tank and covers the water inlet and the water outlet.

[0028] In one embodiment, the fourth sealing portion includes a sealing ring, and the sealing ring is sleeved on the periphery of the pressure relief component.

[0029] In one embodiment, a sealing groove for installing the sealing ring is recessed along the circumference of the outer peripheral wall of the pressure relief component.

[0030] The utility model also provides a water treatment device, the water treatment device comprises a diaphragm pump, the diaphragm pump comprises:

[0031] A valve seat, wherein the valve seat is recessed with a plurality of accommodating grooves arranged at intervals; and

[0032] A diaphragm is disposed on one side of the valve seat where the plurality of accommodating grooves are disposed, and is enclosed with the plurality of accommodating grooves to form a plurality of pressurizing chambers;

[0033] Wherein, a sealing structure is arranged between the valve seat and the diaphragm, and the sealing structure includes a plurality of first sealing structures and a second sealing structure, wherein the plurality of first sealing structures are correspondingly arranged around the periphery of the plurality of accommodating grooves, and the second sealing structure is correspondingly arranged around the periphery of the plurality of accommodating grooves and the first sealing structure.

[0034] In the technical solution of the utility model, the valve seat and the diaphragm are jointly enclosed to form a plurality of independently working boosting chambers. By correspondingly arranging the plurality of first sealing structures on the periphery of the plurality of accommodating grooves, each of the boosting chambers can be sealed separately to avoid leakage, flow and instability of the medium between two adjacent boosting chambers, so as to ensure the normal and efficient operation of the diaphragm pump and also avoid the medium in each boosting chamber from overflowing outward. At the same time, the second sealing structure is arranged around the periphery of the plurality of accommodating grooves and the plurality of first sealing structures to avoid the medium in the plurality of boosting chambers from overflowing outward, so that the external circuit control components are damaged by moisture. In this way, by arranging a double sealing structure, it is possible to ensure the isolation and sealing between the two adjacent boosting chambers, and also provide a double sealing guarantee for protecting the external circuit control components, so as to provide a diaphragm pump with good sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] 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.

[0036] Figure 1 A schematic structural diagram of an embodiment of a diaphragm pump provided by the utility model;

[0037] Figure 2 for Figure 1 A cross-sectional schematic diagram of a diaphragm pump;

[0038] Figure 3 for Figure 1 Schematic diagram of the structure of the middle valve seat, diaphragm and mounting bracket;

[0039] Figure 4 for Figure 1 A top view of the middle valve seat, diaphragm and mounting bracket;

[0040] Figure 5 for Figure 4 Cross-section of the middle AA;

[0041] Figure 6 for Figure 3 Schematic diagram of the first sealing portion and the second sealing portion on the middle valve seat;

[0042] Figure 7 for Figure 1 Schematic diagram of the structure of the middle diaphragm and the mounting bracket;

[0043] Figure 8 for Figure 7Explosion diagram of

[0044] Fig. 9 for Figure 1 A top view of the middle pump cover and the pressure relief assembly;

[0045] Fig.10 for Fig. 9 Cross-section of the middle BB;

[0046] Fig.11 for Fig.10 A partial enlarged view of point C in the middle;

[0047] Fig.12 for Fig. 9 A three-dimensional schematic diagram of the middle pump cover;

[0048] Fig.13 for Fig.12 A three-dimensional schematic diagram of another perspective of the middle pump cover;

[0049] Fig.14 for Fig.13 A partial enlarged view of point D in the middle.

[0050] Description of Figure Numbers:

[0051] 100. Diaphragm pump; 1. Valve seat; 1a. Receiving groove; 1b. Annular groove; 2. Diaphragm; 21. Bottom; 22. Annular side; 3. First sealing portion; 31. Inner annular convex rib; 32. Outer annular convex rib; 33. Connecting convex rib; 4. Second sealing portion; 41. Second convex rib; 5. Mounting bracket; 5a. Mounting groove; 5b. Through hole; 6. Pump cover; a. Water inlet chamber; b. Water outlet chamber; 6a. Receiving groove; 6b. Water inlet; 6c. Water outlet; 61. Annular sealing rib; 6d. Annular guide groove; 62. Annular boss; 63. Protrusion; 7. Pressure relief assembly; 7a. Sealing groove; 8. Third sealing portion; 9. Fourth sealing portion; 10. Annular seal.

[0052] 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

[0053] 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.

[0054] 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.

[0055] 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.

[0056] At present, in order to ensure the flow rate in the boosting chamber during operation and avoid water overflow in the boosting chamber to damage the circuit control components, some electric diaphragm pumps place the sealing ring between the diaphragm and the middle plate and achieve sealing through squeezing the pump casing. The sealing ring is easy to slip during the compression process of the pump casing, causing the sealing ring to deviate from the predetermined installation position, resulting in the sealing ring being crushed and unable to play a sealing role. Some pump covers are deformed during installation and cannot press down multiple sealing rings, diaphragms and other sealing components to ensure the sealing effect. Therefore, the sealing problem of the diaphragm pump is an issue that needs to be solved urgently.

[0057] The utility model provides a diaphragm pump, so as to provide a diaphragm pump with good sealing performance.

[0058] See also Figure 1 , Figure 2 , Figure 4 and Figure 5 In one embodiment of the utility model, the diaphragm pump 100 includes a valve seat 1 and a diaphragm 2, wherein the valve seat 1 is recessed with a plurality of accommodating grooves 1a arranged at intervals; the diaphragm 2 is arranged on one side of the valve seat 1 where the plurality of accommodating grooves 1a are arranged, and together with the plurality of accommodating grooves 1a, a plurality of boosting chambers are enclosed; wherein a sealing structure is arranged between the valve seat 1 and the diaphragm 2, the sealing structure including a plurality of first sealing structures and a second sealing structure, the plurality of first sealing structures being correspondingly arranged around the periphery of the plurality of accommodating grooves 1a, and the second sealing structure being arranged around the periphery of the plurality of accommodating grooves 1a and the plurality of first sealing structures.

[0059] It should be noted that each boosting chamber of the diaphragm pump 100 is provided with a liquid inlet hole and a liquid outlet hole. When the diaphragm 2 is squeezed, the volume of the boosting chamber becomes smaller, and the medium in the boosting chamber is discharged. When the diaphragm 2 is deformed away from the valve seat 1, the volume of the boosting chamber becomes larger, and the medium in the liquid inlet pipe is sucked into the boosting chamber. Since the boosting chamber is formed by the valve seat 1 and the diaphragm 2, the sealing degree between the valve seat 1 and the diaphragm 2 determines the sealing degree of the boosting chamber. It can be understood that when the diaphragm pump 100 processes water, the medium is water. For the convenience of description, the following detailed description is based on the medium being water.

[0060] It is understandable that the diaphragm 2 can be deformed, and the material of the diaphragm 2 is set to be an elastic material, such as rubber, PVC, PTFE, etc.

[0061] It should also be noted that the sealing structure can be a structure arranged on the valve seat, a structure arranged on the diaphragm, or two sealing parts that can be sealed and matched on the valve seat and the diaphragm. Of course, it can also be a sealing structure arranged between the valve seat and the diaphragm.

[0062] The multiple first sealing structures and the second sealing structure can be integrally arranged on the valve seat 1, such as a sealing rib or a sealing groove 7a that cooperates with the diaphragm 2, or can be a separate sealing component, such as a sealing ring or a sealing ring, etc. The multiple first sealing structures can be multiple separately arranged seals, or can be an integrally formed seal, forming a local structure that can seal the periphery of the notch of each of the accommodating grooves 1a.

[0063] It should also be noted that in order to provide a larger flux, the diaphragm pump 100 described in this solution can be set as a five-chamber diaphragm pump 100. It can be understood that the characteristics of the diaphragm pump 100 described below are not limited to application to a five-chamber diaphragm pump 100, but can also be applied to diaphragm pumps 100 with different numbers of cavities. The specific number can be determined based on actual conditions, and the embodiments of this specification do not limit this.

[0064] The brush pump used in the present application has a large flux and a large instantaneous starting power, so a higher sealing performance requirement is placed on the boost chamber.

[0065] In the technical solution of the present utility model, the valve seat 1 and the diaphragm 2 are jointly enclosed to form a plurality of independently working boosting chambers. By correspondingly arranging a first sealing structure on the periphery of each of the accommodating grooves 1a, each of the boosting chambers can be sealed separately to avoid leakage, flow and instability of the medium between the two adjacent boosting chambers, so as to ensure the normal and efficient operation of the diaphragm pump 100, and also avoid the medium in each of the boosting chambers from overflowing outward. At the same time, a second sealing structure is arranged around the periphery of the plurality of accommodating grooves 1a and the plurality of first sealing structures to avoid the medium in the plurality of boosting chambers from overflowing outward, so that the external circuit control components are damaged by moisture. In this way, by arranging a double sealing structure, it is possible to ensure the isolation and sealing between the two adjacent boosting chambers, and also provide a double sealing guarantee for protecting the external circuit control components, so as to provide a diaphragm pump 100 with good sealing performance.

[0066] It is understandable that the sealing structure is not limited to the first sealing structure and the second sealing structure. In order to achieve a better sealing effect, more multiple sealing structures can be provided, which are sequentially arranged around the outer part of the second sealing structure. When the first sealing structure and the second sealing structure fail on the path of water overflow, there are more sealing structures that can achieve a sealing effect. The number and form of the sealing parts are not limited to the above examples. The technicians in the relevant field may make other changes under the inspiration of the technical essence of the embodiments of this specification, but as long as the functions and effects achieved are the same or similar to the embodiments of this specification, they should be covered within the protection scope of the embodiments of this specification.

[0067] It should also be noted that in the prior art, a brushed motor is generally used as a driving device to drive the extrusion activity of the diaphragm 2. In a brushed motor, multiple sets of coil windings are connected to the commutator, and the commutator abuts against the carbon brush. During the rotation of the rotor, the commutator also rotates. The alternating change of the current direction in the multiple sets of coil windings is achieved by the continuous contact between the carbon brush and the commutator. Due to the existence of the mechanical commutation structure composed of the carbon brush and the commutator, the current brushed motor is generally larger in size, which causes the diaphragm pump 100 to occupy a larger installation space for the whole machine. The carbon powder generated 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 a lot of noise.

[0068] In the technical solution of the present application, the type of driving motor is a brushless motor, which is composed of a motor body and a driver and is a typical mechatronics product. Since the brushless motor is operated in an automatic control mode, it does not need an additional starting winding on the rotor like a synchronous motor that starts under heavy load under variable frequency speed regulation, nor does it produce oscillation and loss of step when the load suddenly changes. The permanent magnets of small and medium-capacity brushless motors now mostly use rare earth neodymium iron boron (Nd-Fe-B) materials with high magnetic energy levels. Therefore, the volume of the rare earth permanent magnet brushless motor is one frame size smaller than that of the three-phase asynchronous motor of the same capacity, and there is no need to use the carbon brushes and commutator in the traditional brushed motor, which can further reduce the volume of the booster pump.

[0069] Compared with brushed motors, brushless motors have removed the brushes. The most direct change is that there are no sparks generated by brushed motors during operation, which greatly reduces the interference of sparks on remote control radio equipment. At the same time, brushless motors have no brushes, so the friction is greatly reduced during operation, running smoothly and with much lower noise.

[0070] Specifically, in this embodiment, the plurality of first sealing structures include a plurality of first sealing portions 3 provided on the valve seat 1, and the second sealing structure includes a second sealing portion 4 provided on the valve seat 1. In this way, the first sealing portion 3 and the second sealing portion 4 are both provided on the valve seat 1, and the valve seat 1 can be processed and designed to achieve double sealing with the diaphragm 2, which has a simple structure and is easy to manufacture.

[0071] Specifically, see Figures 4 to 6 In this embodiment, the first sealing portion 3 includes a first convex rib convexly arranged on the side of the valve seat 1 facing the diaphragm 2. Since the first convex rib protrudes from the end surface of the valve seat 1 and the material of the diaphragm 2 is elastic, when the valve seat 1 and the diaphragm 2 are installed and the end surface of the valve seat 1 fits the diaphragm 2, the first convex rib squeezes the diaphragm 2. Through the compression of the first convex rib and the elastic deformation of the diaphragm 2, the sealing between the two is enhanced, water leakage is prevented, and the sealing performance and reliability of the valve seat 1 are improved.

[0072] In this way, the first sealing portion 3 is directly formed on the valve seat 1. When the valve seat 1 is formed, the first sealing portion 3 can be directly formed without setting up other parts. The manufacturing process is simple, the cost is low, and the assembly is convenient.

[0073] Furthermore, in this embodiment, the first plurality of ribs forming the first plurality of sealing portions 3 are interconnected to form a first rib structure. Thus, when forming the first plurality of sealing portions 3, ribs of the same thickness can be provided, and by interconnecting the plurality of ribs into one, the pressure is more evenly distributed on the diaphragm 2, thereby avoiding local pressure concentration, and forming a larger contact area, thereby enhancing the sealing performance with the diaphragm 2, reducing the risk of leakage, and improving the consistency of the sealing effect.

[0074] Specifically, see Figure 6 In this embodiment, the multiple accommodating grooves 1a are arranged at intervals along the circumference of the valve seat 1; in this way, a plurality of boosting chambers arranged at intervals in the circumferential direction are formed, and the first rib structure includes an inner annular rib 31, an outer annular rib 32, and a plurality of connecting ribs 33, the inner annular rib 31 is arranged in the inner surrounding area of ​​the multiple accommodating grooves 1a, the outer annular rib 32 is arranged in the outer peripheral area of ​​the multiple accommodating grooves 1a, and each of the connecting ribs 33 is connected between the inner annular rib 31 and the outer annular rib 32, and is located at the interval between two adjacent accommodating grooves 1a.

[0075] In this way, the multiple rib segments connected in sequence by the inner annular rib 31 and the multiple rib segments connected in sequence by the outer annular rib 32 successively form partial sealing structures of each of the receiving grooves 1a, and the connecting rib 33 between two adjacent receiving grooves 1a can also serve as a sealing structure separating the two receiving grooves 1a, with a simple structure and simple molding.

[0076] For details, please continue to see Figure 6 In this embodiment, the second sealing portion 4 includes a second convex rib 41 convexly arranged on the side of the valve seat 1 facing the diaphragm 2. In this way, the second sealing portion 4 is also formed into an integral structure with the valve seat 1, which not only enables the second sealing portion 4 to form a sealing structure when the valve seat 1 is formed, but also only requires the sealing between the second convex rib 41 and the diaphragm 2 to be ensured during assembly, thereby avoiding the need to ensure the sealing between the second convex rib 41 and the valve seat 1 in addition to the sealing between the second convex rib 41 and the diaphragm 2 when the second sealing portion 4 is formed separately. The sealing structure and molding process in this embodiment are simple, low cost, and easy to assemble.

[0077] See also Figure 5 and Figure 6 In this embodiment, a side of the valve seat 1 facing the diaphragm 2 is concavely provided with an annular groove 1b, the annular groove 1b is arranged around the periphery of the plurality of first sealing portions 3, and the second sealing portion 4 is arranged at the bottom of the annular groove 1b.

[0078] It can be understood that, in order to make the diaphragm 2 match the valve seat 1, the diaphragm 2 is provided with an annular protrusion matched with the annular groove 1b.

[0079] In this way, the second sealing portion 4 is arranged at the bottom of the annular groove 1b, so that the second sealing portion 4 and the multiple first sealing portions 3 are not on the same horizontal plane in the radial direction of the valve seat 1, and after the multiple first sealing portions 3 are sealed, a sealing ring structure is also formed between the annular protrusion of the diaphragm 2 and the inner circumferential wall of the annular groove 1b of the valve seat 1, so that a sealing structure is formed between the first sealing portion 3 and the second sealing portion 4, forming a good sealing effect.

[0080] In another embodiment, the diaphragm pump 100 further includes a mounting bracket 5 disposed on the side of the valve seat 1 facing the diaphragm 2; the diaphragm 2 is disposed between the mounting bracket 5 and the valve seat 1. In this way, the diaphragm 2 is clamped between the mounting bracket 5 and the valve seat 1, and the diaphragm 2 can be fixed by the clamping force between the mounting bracket 5 and the valve seat 1. When the diaphragm 2 is damaged and needs to be replaced and repaired, the valve seat 1 can be disassembled, and the diaphragm 2 can be directly replaced and repaired, which is simple to disassemble and assemble, and convenient to repair.

[0081] Furthermore, since the diaphragm 2 is subjected to the clamping force between the mounting bracket 5 and the valve seat 1 , the clamping force pressing the diaphragm 2 can be adjusted by adjusting the locking degree between the mounting bracket 5 and the valve seat 1 , and the adjustment is convenient.

[0082] For further information, see Figure 8 In this embodiment, a mounting groove 5a is recessed on one side of the mounting bracket 5 facing the valve seat 1, and a plurality of through holes 5b are penetrated through the bottom of the mounting groove 5a, and each of the through holes 5b is arranged corresponding to one of the boosting chambers; the diaphragm 2 is accommodated in the mounting groove 5a, and the diaphragm 2 includes a bottom 21 and an annular side portion 22 extending from the outer peripheral edge of the bottom 21 toward the valve seat 1; the valve seat 1 has a side wall arranged on the inner side of the annular side portion 22, and the annular side portion 22 is sandwiched between the side wall of the valve seat 1 and the inner side wall of the mounting groove 5a.

[0083] It should be noted that a plurality of through holes 5b are provided on the mounting bracket 5, so that a plurality of driving parts of the driving mechanism can pass through the plurality of through holes 5b and connect with the diaphragm 2, thereby driving the diaphragm 2 to move and deform, thereby squeezing and deforming the corresponding boost chamber.

[0084] The diaphragm 2 is accommodated in the mounting groove 5a, and the diaphragm 2 is supported on the bottom of the mounting groove 5a. The outer wall of the annular side portion 22 of the diaphragm 2 can be in contact with the inner wall of the mounting groove 5a, and the inner wall of the inner side of the annular side portion 22 of the diaphragm 2 is in contact with the side wall of the valve seat 1, so that the annular side portion 22 of the diaphragm 2 can be sandwiched between the side wall of the valve seat 1 and the inner wall of the mounting groove 5a. It can be understood that the annular side portion 22 can be set to have an interference fit with the valve seat 1 and the mounting bracket 5, that is, the outer diameter of the annular side portion 22 is set to be slightly larger than the inner diameter of the mounting groove 5a, and the inner diameter of the annular side portion 22 is set to be slightly smaller than the outer diameter of the outer wall of the valve seat 1.

[0085] Furthermore, in order to further ensure the sealing effect, in the present embodiment, the side wall of the valve seat 1 is provided with an annular protrusion, and the annular side portion 22 protrudes from the annular protrusion. An annular groove 1b is defined between the side wall of the valve seat 1 and the inner side wall of the mounting groove 5a. An annular seal 10 is provided in the annular groove 1b, and the annular seal 10 is abutted against the protruding end surface of the annular side portion 22. An adjusting structure can be provided between the annular seal 10 and the inner wall of the annular groove 1b, so that the annular seal 10 can abut against the annular side portion 22, and the annular seal 10 can be pressed against the annular side portion 22 through the adjusting structure, so that the thickness of the annular side portion 22 in the radial direction of the valve seat 1 can be increased, so as to better seal between the side wall of the valve seat 1 and the inner side wall of the mounting groove 5a.

[0086] For further information, see Figures 9 to 11 In the present embodiment, the diaphragm pump 100 further comprises a pump cover 6 and a pressure relief assembly 7. The pump cover 6 is arranged on the side of the valve seat 1 away from the diaphragm 2 to enclose with the valve seat 1 to form an inlet chamber a and an outlet chamber b which are arranged at intervals. The pump cover 6 is provided with a receiving groove 6a which is connected with the outlet chamber b. A water inlet 6b and a water outlet 6c are arranged on the inner wall of the receiving groove 6a. The water inlet 6b is connected with the outlet chamber b, and the water outlet 6c is connected with the inlet chamber a. The pressure relief assembly 7 is arranged in the receiving groove 6a for connecting and disconnecting the water inlet 6b and the water outlet 6c. A third sealing structure is arranged in the receiving groove 6a, and the third sealing structure is arranged between the pressure relief assembly 7 and the hole wall of the receiving groove 6a to seal the two.

[0087] It should be noted that a cavity with an opening is formed on the pump cover, and the opening is arranged toward the diaphragm. A partition is arranged on the pump cover, and the partition extends from the inner wall of the cavity toward the opening to divide the cavity into two sub-cavities. The two sub-cavities and the diaphragm are enclosed to form the water inlet cavity a and the water outlet cavity b. The pump cover is also provided with an inlet and an outlet, and the inlet is connected to the water inlet cavity a, and the outlet is connected to the water outlet cavity b. Therefore, the water entering the water inlet cavity a enters the water outlet cavity b after being pressurized by the diaphragm, so as to form a high-pressure area in the water inlet cavity a and a low-pressure area in the water outlet cavity b.

[0088] It should be noted that the pressure relief assembly includes a mounting shell, and a spring and a valve block arranged in the mounting shell, and the valve block is arranged at the bottom of the spring. Under the action of the spring, the valve block can be movably arranged in the direction close to and away from the water inlet 6b and the water outlet 6c. When the water inlet 6b and the water outlet 6c are blocked, the water in the water inlet chamber a and the water outlet chamber b can be prevented from flowing into each other. When the water inlet 6b and the water outlet 6c are far away from the water inlet 6b and the water outlet 6c, the water inlet 6b and the water outlet 6c are connected, and the water in the water outlet chamber b can flow back to the water inlet chamber a due to the high pressure.

[0089] It should be noted that when the pump is running, when the pressure inside the pump is too high, in order to avoid pipeline blockage or other reasons that lead to excessive pressure, and excessive pressure causing damage to the pump and pipeline, the pressure relief component 7 is set to help stabilize the system pressure, ensure the stable performance of the pump within the normal working range, and avoid the pump working under excessively high or low pressure. At the same time, by adjusting the set pressure of the pressure relief component 7, the system pressure can be accurately adjusted to meet the needs under different working conditions.

[0090] However, when the pressure in the pump is below the set threshold, in order to ensure the sealing performance around the pressure relief component 7, the third sealing structure is provided to ensure the sealing performance between the pressure relief component 7 and the side wall of the accommodating groove 6a.

[0091] Specifically, the third sealing structure includes a third sealing portion 8 and a fourth sealing portion 9 sequentially arranged along the depth direction of the accommodating groove 6a. In this way, when water leaks out from between the pressure relief assembly 7 and the hole wall of the accommodating groove 6a, when passing through the third sealing portion 8, if the third sealing portion 8 has good sealing performance, the overall sealing effect can be achieved. If the sealing of the third sealing portion 8 fails, the fourth sealing portion 9 can form a sealed structure again on the path through which water flows to ensure that water does not overflow.

[0092] It can be understood that the number of sealing parts included in the third sealing structure is not limited to the above examples, but can also be three, four, or five, etc. Technical personnel in the relevant field may make other changes under the inspiration of the technical essence of the embodiments of this specification, but as long as the functions and effects achieved are the same or similar to the embodiments of this specification, they should be covered within the protection scope of the embodiments of this specification.

[0093] Specifically, in this embodiment, the water inlet 6b and the water outlet 6c are provided at the bottom of the receiving groove 6a; the third sealing portion 8 is used to seal the pressure relief component 7 with the bottom of the receiving groove 6a, and the fourth sealing portion 9 is used to seal the outer peripheral wall of the pressure relief component 7 with the side wall of the receiving groove 6a. In this way, the third sealing portion 8 is provided on the bottom of the receiving groove 6a, so that the bottom 21 of the pressure relief component 7 can be sealed with the pump cover 6, and the fourth sealing portion 9 is provided on the peripheral side of the pressure relief component 7, so that the side of the pressure relief component 7 can be sealed with the pump cover 6, so that different sealing forms are formed at different positions of the pressure relief component 7, and multiple sealing can be achieved.

[0094] Specifically, in this embodiment, the third sealing portion 8 includes a sealing gasket, which is located between the pressure relief assembly 7 and the bottom of the accommodating groove 6a, and covers the water inlet 6b and the water outlet 6c.

[0095] It should be noted that the valve block of the pressure relief assembly 7 abuts against the sealing gasket, so that the sealing gasket can be pressed against the water inlet 6b and the water outlet 6c to form a seal to prevent the water in the water inlet chamber a and the water outlet chamber b from flowing into each other.

[0096] In this way, the high water pressure formed by the water outlet chamber b of the pump cover 6 directly acts on the sealing gasket. When the pressure is below the preset pressure threshold, the sealing gasket forms a reliable sealing structure and separates the pressure relief assembly 7 from the water outlet chamber b. Even if there is a leak in the sealing gasket, the fourth sealing portion 9 can subsequently perform further sealing. When the pressure exceeds the preset pressure threshold, the water pressure pushes open the sealing gasket, and the water in the water outlet chamber b can flow from the water inlet 6b to the water outlet 6c, and then flow back to the water inlet chamber a.

[0097] Furthermore, in order to form a good sealing effect between the sealing gasket and the pump cover 6, in this embodiment, an annular sealing rib 61 is convexly provided at the bottom of the accommodating groove 6a, and the annular sealing rib 61 is provided at the periphery of the water inlet 6b and the water outlet 6c. Because the material of the sealing gasket is elastic, when the sealing gasket is sandwiched between the pressure relief assembly 7 and the pump cover 6, the sealing gasket is elastically deformed in the area corresponding to the annular sealing rib 61, thereby enhancing the sealing between the two, preventing water leakage, and improving the sealing performance and reliability between the sealing gasket and the pump cover.

[0098] Furthermore, in order to prevent the water outlet 6c from being fully opened to release pressure when the sealing gasket is deformed, in the present embodiment, an annular guide groove 6d is recessed at the bottom of the accommodating groove 6a, and the annular guide groove 6d is arranged at the periphery of the water outlet 6c, and the water inlet 6b is arranged at the bottom of the annular guide groove 6d. In this way, when the water pressure in the water outlet chamber is too high, the large amount of water in the water outlet chamber can flow along the annular guide groove 6d after entering the water inlet 6b, so that the area located at the periphery of the water outlet 6c can generate a relatively uniform pressure on the sealing gasket, so that the sealing gasket is deformed in the area corresponding to the annular guide groove 6d, so that the spring is compressed to make way for the deformation of the sealing gasket. When the sealing gasket is deformed, the water outlet 6c located in the middle area of ​​the annular guide groove 6d can be fully exposed, so that the pressure relief is unobstructed.

[0099] Furthermore, in this embodiment, an annular boss 62 is convexly provided at the bottom of the annular guide groove 6d, and the annular boss 62 is arranged around the periphery of the water inlet 6b and protrudes from the bottom of the receiving groove 6a. In this way, when the sealing gasket is arranged at the bottom of the receiving groove 6a, a sealing structure is also formed between the annular boss 62 and the sealing gasket. Compared with the sealing gasket directly covering the water inlet 6b and the water outlet 6c, the use of this sealing structure can further enhance the sealing performance to prevent the water in the water inlet cavity and the water outlet cavity from flowing.

[0100] Furthermore, in this embodiment, the bottom of the annular guide groove 6d is provided with a plurality of protrusions 63, and the plurality of protrusions 63 are arranged at intervals along the circumference of the annular guide groove 6d. Since the valve block of the pressure relief assembly 7 presses the sealing gasket against the bottom of the accommodating groove 6a, and the annular guide groove 6d is arranged on the bottom of the accommodating groove 6a, the notch area of ​​the sealing gasket corresponding to the annular guide groove 6d is in a suspended state. In order to enable the sealing gasket to be compressed and form a larger action surface, the plurality of protrusions 63 are arranged along the bottom of the annular guide groove 6d, which can support the sealing gasket while not affecting the annular guide function of the annular guide groove 6d.

[0101] In other embodiments, an annular convex rib structure may be provided at the bottom of the annular guide groove 6d, which can also achieve the above-mentioned effect. Of course, the structure for supporting the sealing gasket is not limited to the above-mentioned example. Technical personnel in the relevant field may make other changes based on the technical essence of the embodiments of this specification. However, as long as the functions and effects achieved are the same or similar to those of the embodiments of this specification, they should be covered within the protection scope of the embodiments of this specification.

[0102] In this embodiment, in order to achieve a better sealing effect between the sealing gasket and the pump cover 6, the sealing gasket and the side wall of the receiving groove 6a are interference fit. In this way, the sealing gasket not only forms a sealing structure with the bottom of the receiving groove 6a, but also forms a sealing structure between the side walls of the receiving groove 6a, thereby achieving multiple sealing.

[0103] Specifically, in this embodiment, the fourth sealing portion 9 includes a sealing ring, and the sealing ring is sleeved on the periphery of the pressure relief component 7. The sealing ring is interference-fitted with the pressure relief component 7 to ensure the sealing performance with the pressure relief component 7.

[0104] Furthermore, in order to ensure the stability of the sealing ring, in this embodiment, a sealing groove 7a for installing the sealing ring is recessed along its circumference on the outer peripheral wall of the pressure relief assembly 7. In this way, the sealing ring is confined in the sealing groove 7a, and the side wall of the sealing groove 7a can prevent the sealing ring from shifting up and down, so as to ensure the stability of the sealing ring.

[0105] It should be noted that the groove depth of the sealing groove 7a can be set to be slightly smaller than the diameter of the sealing ring, so that an interference fit is formed between the sealing ring and the sealing groove 7a and the inner wall of the accommodating groove 6a to achieve a good sealing effect.

[0106] It is understandable that an annular sealing groove may also be provided on the side wall of the accommodating groove 6a, and the annular sealing groove is arranged opposite to the sealing groove 7a, so that the inner ring part and the outer ring part of the sealing ring can be limited and clamped. Of course, the sealing groove 7a may also be provided only on the side wall of the accommodating groove 6a, and the sealing groove 7a may not be provided on the pressure relief component 7, and a similar effect can be achieved.

[0107] The utility model also proposes a water treatment device, which includes a filtering device and a diaphragm pump 100. The specific structure of the diaphragm pump 100 refers to the above embodiment. Since the water treatment device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here one by one.

[0108] 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 (100), characterized in that: include: A valve seat (1), wherein the valve seat (1) is recessed with a plurality of accommodating grooves (1a) arranged at intervals; and The diaphragm (2) is arranged on one side of the valve seat (1) where the plurality of accommodating grooves (1a) are provided, and together with the plurality of accommodating grooves (1a) form a plurality of pressure-increasing chambers; A sealing structure is provided between the valve seat (1) and the diaphragm (2), and the sealing structure comprises a plurality of first sealing structures and a second sealing structure, wherein the plurality of first sealing structures are correspondingly arranged around the periphery of the plurality of receiving grooves (1a), and the second sealing structure is correspondingly arranged around the periphery of the plurality of receiving grooves (1a) and the first sealing structure.

2. The diaphragm pump (100) according to claim 1, characterized in that: The plurality of first sealing structures include a plurality of first sealing portions (3) arranged on the valve seat (1), and the second sealing structure includes a second sealing portion (4) arranged on the valve seat (1).

3. The diaphragm pump (100) according to claim 2, characterized in that: The first sealing portion (3) comprises a first convex rib protruding from a side of the valve seat (1) facing the diaphragm (2).

4. The diaphragm pump (100) according to claim 3, characterized in that: The plurality of first ribs forming the plurality of first sealing portions (3) are connected to each other to form a first rib structure.

5. The diaphragm pump (100) according to claim 4, characterized in that: The plurality of accommodating grooves (1a) are arranged at intervals along the circumference of the valve seat (1); The first convex rib structure comprises an inner annular convex rib (31), an outer annular convex rib (32), and a plurality of connecting convex ribs (33); the inner annular convex rib (31) is arranged in the inner peripheral area of ​​the plurality of accommodating grooves (1a); the outer annular convex rib (32) is arranged in the peripheral area of ​​the plurality of accommodating grooves (1a); each connecting convex rib (33) is connected between the inner annular convex rib (31) and the outer annular convex rib (32), and is located at the interval between two adjacent accommodating grooves (1a).

6. The diaphragm pump (100) according to claim 2, characterized in that: The second sealing portion (4) comprises a second convex rib (41) convexly arranged on a side of the valve seat (1) facing the diaphragm (2).

7. The diaphragm pump (100) according to claim 2, characterized in that: The valve seat (1) is provided with an annular groove (1b) on one side facing the diaphragm (2), the annular groove (1b) being arranged around the periphery of the plurality of first sealing portions (3), and the second sealing portion (4) being arranged at the bottom of the annular groove (1b).

8. The diaphragm pump (100) according to claim 1, characterized in that: The diaphragm pump (100) further comprises a mounting bracket (5) arranged on a side of the valve seat (1) facing the diaphragm (2); The diaphragm (2) is arranged between the mounting bracket (5) and the valve seat (1).

9. The diaphragm pump (100) according to claim 8, characterized in that: A mounting groove (5a) is recessed on one side of the mounting bracket (5) facing the valve seat (1), and a plurality of through holes (5b) are penetrated through the bottom of the mounting groove (5a); The diaphragm (2) is accommodated in the mounting groove (5a), and the diaphragm (2) comprises a bottom (21) and an annular side portion (22) extending from the outer peripheral edge of the bottom (21) toward the valve seat (1); The valve seat (1) has a side wall arranged on the inner side of the annular side portion (22), and the annular side portion (22) is sandwiched between the side wall of the valve seat (1) and the inner wall of the mounting groove (5a).

10. The diaphragm pump (100) according to claim 1, characterized in that: The diaphragm pump (100) further comprises: A pump cover (6) is arranged on a side of the valve seat (1) away from the diaphragm (2) to enclose the valve seat (1) to form a water inlet chamber (a) and a water outlet chamber (b) arranged at intervals, the pump cover (6) is provided with a receiving groove (6a), and a water inlet (6b) and a water outlet (6c) are arranged on the inner wall of the receiving groove (6a), the water inlet (6b) is connected to the water outlet chamber (b), and the water outlet (6c) is connected to the water inlet chamber (a); and, A pressure relief assembly (7), disposed in the containing groove (6a), and used for connecting and disconnecting the water inlet (6b) and the water outlet (6c); A third sealing structure is provided in the accommodating groove (6a), and the third sealing structure is arranged on one side of the notch of the accommodating groove (6a) near the water inlet (6b) and the water outlet (6c). The third sealing structure is arranged between the pressure relief component (7) and the hole wall of the accommodating groove (6a) to seal the two.

11. The diaphragm pump (100) according to claim 10, characterized in that: The third sealing structure comprises a third sealing portion (8) and a fourth sealing portion (9) which are arranged in sequence along the depth direction of the accommodating groove (6a).

12. The diaphragm pump (100) according to claim 11, characterized in that: The bottom (21) of the containing tank (6a) is provided with the water inlet (6b) and the water outlet (6c); The third sealing portion (8) is used to seal the pressure relief component (7) with the bottom (21) of the accommodating groove (6a), and the fourth sealing portion (9) is used to seal the outer peripheral wall of the pressure relief component (7) with the side wall of the accommodating groove (6a).

13. The diaphragm pump (100) according to claim 12, characterized in that: The third sealing portion (8) comprises a sealing gasket, which is located between the pressure relief assembly (7) and the bottom (21) of the accommodating groove (6a), and covers the water inlet (6b) and the water outlet (6c).

14. The diaphragm pump (100) according to claim 12, characterized in that: The fourth sealing portion (9) comprises a sealing ring, and the sealing ring is sleeved on the periphery of the pressure relief component (7).

15. The diaphragm pump (100) according to claim 14, characterized in that: The outer peripheral wall of the pressure relief assembly (7) is provided with a sealing groove (7a) along its circumference for installing the sealing ring.

16. A water treatment device, characterized in that: It comprises the diaphragm pump (100) according to any one of claims 1 to 15.

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