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, a pump cover and a pressure relief assembly, the pump cover is arranged on one side of the valve seat in a covering mode, so that a water inlet cavity and a water outlet cavity which are arranged at intervals are defined by the pump cover and the valve seat; a mounting groove communicated with the water outlet cavity is formed in the pump cover; the pressure relief assembly is arranged in the mounting groove; a first sealing structure is arranged in the mounting groove, the first sealing structure comprises a first sealing part and a second sealing part, the first sealing part and the second sealing part are arranged between the pressure relief assembly and the hole wall of the mounting groove, and the first sealing part and the second sealing part are sequentially arranged in the depth direction of the mounting groove; according to the diaphragm pump, the double-sealing structure of the first sealing part and the second sealing part is arranged, so that leakage of the pressure release valve when pressure release is not needed is avoided, and the diaphragm pump is good in sealing performance.

Description

Technical Field

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

[0002] Since a diaphragm pump is a pump that transports liquids by compressing and expanding a diaphragm, and a pressure relief valve can be used to regulate the pressure of the pump system. When the output resistance suddenly decreases or is closed, the diaphragm pump will generate excessive pressure in the system. The pressure relief valve can help release this excessive pressure, thereby protecting the pump and other system components from damage. If the diaphragm pump has poor sealing performance, it will cause problems such as leakage, inaccurate pressure control, decreased pump performance, increased maintenance costs, and safety hazards. Summary of the Utility Model

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

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

[0005] A valve seat;

[0006] A pump cover, which is disposed on one side of the valve seat to enclose an inlet chamber and an outlet chamber that are spaced apart from the valve seat. An installation groove is provided on the pump cover, and an inlet and an outlet are provided on the inner wall of the accommodation groove. The inlet is communicated with the outlet chamber, and the outlet is communicated with the inlet chamber; and,

[0007] A pressure relief component, which is disposed in the accommodation groove and is used to connect and disconnect the inlet and the outlet;

[0008] Wherein, a first sealing structure is provided in the accommodation groove, and the first sealing structure is disposed on the side of the inlet and the outlet close to the notch of the accommodation groove. The first sealing structure includes a first sealing portion and a second sealing portion disposed between the pressure relief component and the inner wall of the accommodation groove, and the first sealing portion and the second sealing portion are arranged in sequence along the depth direction of the accommodation groove.

[0009] In an embodiment, the inlet and the outlet are provided at the bottom of the accommodation groove;

[0010] The first sealing portion is used to seal the pressure relief component and the bottom of the accommodation groove, and the second sealing portion is used to seal the outer peripheral wall of the pressure relief component and the side wall of the accommodation groove.

[0011] In one embodiment, the first sealing portion includes a gasket located between the pressure relief component and the bottom of the accommodating groove and covering the water inlet and the water outlet.

[0012] In one embodiment, an annular sealing rib protrudes from the bottom of the accommodating groove and is disposed around the water inlet and the water outlet.

[0013] In one embodiment, an annular diversion groove is recessed in the bottom of the accommodating groove and is disposed around the water outlet, and the water inlet is provided at the bottom of the annular diversion groove.

[0014] In one embodiment, an annular boss protrudes from the bottom of the annular diversion groove and is disposed around the water inlet and protrudes from the bottom of the accommodating groove.

[0015] In one embodiment, a plurality of protrusions protrude from the bottom of the annular diversion groove and are arranged at intervals along the circumferential direction of the annular diversion groove.

[0016] In one embodiment, an interference fit is provided between the gasket and the side wall of the accommodating groove.

[0017] In one embodiment, the second sealing portion includes a sealing ring sleeved around the pressure relief component.

[0018] In one embodiment, a sealing groove for installing the sealing ring is recessed in the outer peripheral wall of the pressure relief component along its circumferential direction.

[0019] The present utility model further provides a water treatment device, which includes a diaphragm pump, and the diaphragm pump includes:

[0020] A valve seat;

[0021] A pump cover covering one side of the valve seat to enclose an inlet chamber and an outlet chamber which are spaced apart with the valve seat. An installation groove is provided on the pump cover. An inlet and an outlet are provided on the inner wall of the accommodating groove. The inlet is communicated with the outlet chamber, and the outlet is communicated with the inlet chamber; and,

[0022] A pressure relief component disposed in the accommodating groove, and the pressure relief component is used to connect and disconnect the inlet and the outlet.

[0023] Wherein, a first sealing structure is arranged in the accommodating groove, and the first sealing structure is arranged on one side of the water inlet and the water outlet close to the notch of the accommodating groove. The first sealing structure includes a first sealing part and a second sealing part arranged between the pressure relief component and the inner wall of the accommodating groove, and the first sealing part and the second sealing part are arranged in sequence along the depth direction of the accommodating groove.

[0024] In the technical solution of the present utility model, a first sealing part and a second sealing part are arranged in sequence along the depth direction between the pressure relief component and the hole wall of the installation groove. When water seeps out between the pressure relief component and the hole wall of the installation groove, when passing through the first sealing part, if the sealing performance of the first sealing part is good, the overall sealing effect can be achieved. If the seal of the first sealing part fails, the second sealing part can form a sealing structure again on the path of the water flow to ensure that the water does not overflow, so as to provide a diaphragm pump with good sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0026] Figure 1 It is a schematic structural diagram of an embodiment of the diaphragm pump provided by the present utility model;

[0027] Figure 2 For Figure 1 the cross-sectional view of the diaphragm pump in

[0028] Figure 3 For Figure 1 the schematic structural diagram of the valve seat, the diaphragm and the mounting bracket in

[0029] Figure 4 For Figure 1 the top view of the valve seat, the diaphragm and the mounting bracket in

[0030] Figure 5 For Figure 4 the sectional view of A-A in

[0031] Figure 6 For Figure 3 the schematic diagram of the third sealing part and the fourth sealing part on the valve seat in

[0032] Figure 7 For Figure 1 the schematic structural diagram of the diaphragm and the mounting bracket in

[0033] Figure 8 is Figure 7 the explosion schematic diagram of

[0034] Figure 9 is Figure 1 the top view schematic diagram of the pump cover and the pressure relief component in

[0035] Figure 10 is Figure 9 the sectional view of B - B in

[0036] Figure 11 is Figure 10 the partial enlarged view at C in

[0037] Figure 12 is Figure 9 the three - dimensional schematic diagram of the pump cover in

[0038] Figure 13 is Figure 12 the three - dimensional schematic diagram of another view angle of the pump cover in

[0039] Figure 14 is Figure 13 the partial enlarged view at D in

[0040] Explanation of the reference numerals in the drawings:

[0041] 100, diaphragm pump; 1, valve seat; 1a, receiving groove; 1b, annular groove; 2, diaphragm; 21, bottom; 22, annular side; 3, third sealing part; 31, inner annular rib; 32, outer annular rib; 33, connecting rib; 4, fourth sealing part; 41, second rib; 5, mounting bracket; 5a, mounting groove; 5b, through - hole; 6, pump cover; a, water inlet cavity; b, water outlet cavity; 6a, accommodating groove; 6b, water inlet; 6c, water outlet; 61, annular sealing rib; 6d, annular diversion groove; 62, annular boss; 63, convex part; 7, pressure relief component; 7a, sealing groove; 8, first sealing part; 9, second sealing part; 10, annular seal.

[0042] The realization, functional features and advantages of the purpose of the present utility model will be further described in conjunction with the embodiments and with reference to the accompanying drawings. Specific embodiments

[0043] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0044] 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.

[0045] 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.

[0046] Because a diaphragm pump is a pump that delivers liquid by compressing and expanding a diaphragm, and a pressure relief valve can be used to regulate the pressure of the pump system, when the output resistance is suddenly reduced or closed, the diaphragm pump will generate excessive pressure in the system. The pressure relief valve can help release this excessive pressure, thereby protecting the pump and other system components from damage. If the diaphragm pump has poor sealing, it will cause leakage, inaccurate pressure control, reduced pump performance, increased maintenance costs, and safety hazards.

[0047] The utility model provides a diaphragm pump 100 to provide a diaphragm pump with good sealing performance.

[0048] See also Figures 9 to 14 In one embodiment of the utility model, the diaphragm pump 100 further includes a pump cover 6 and a pressure relief assembly 7, wherein the pump cover 6 is arranged on the side of the valve seat 1 away from the diaphragm 2 to enclose the valve seat 1 to form an inlet chamber a and an outlet chamber b that are spaced apart, and the pump cover 6 is provided with a receiving groove 6a that is connected to the outlet chamber b, and the inner wall of the receiving groove 6a is provided with a water inlet 6b and a water outlet 6c, the water inlet 6b is connected to the outlet chamber b, and the water outlet 6c is connected to the inlet chamber a, and the pressure relief assembly 7 is provided in the receiving groove 6a for connecting and disconnecting the water inlet 6b and the water outlet 6c; a third sealing structure is provided in the receiving groove 6a, and the third sealing structure is provided between the pressure relief assembly 7 and the hole wall of the receiving groove 6a to seal the two.

[0049] It should be noted that a cavity with an opening is formed on the pump cover. The opening faces the diaphragm. A partition part is arranged on the pump cover. The partition part extends from the inner wall of the cavity towards the opening to divide the cavity into two sub-cavities. The two sub-cavities and the diaphragm enclose to form the water inlet chamber a and the water outlet chamber b. An inlet and an outlet are also arranged on the pump cover. The inlet is communicated with the water inlet chamber a, and the outlet is communicated with the water outlet chamber b. Therefore, the water entering the water inlet chamber a is pressurized by the diaphragm and then enters the water outlet chamber b, so as to form a high-pressure area in the water inlet chamber a and a low-pressure area in the water outlet chamber b.

[0050] It should be noted that the pressure relief component includes an installation shell, a spring and a valve block arranged in the installation shell. 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 valve block closes the water inlet 6b and the water outlet 6c, the water in the water inlet chamber a and the water outlet chamber b can be prevented from flowing back and forth. When the valve block is away from the water inlet 6b and the water outlet 6c, the water inlet 6b and the water outlet 6c are communicated, and the water in the water outlet chamber b can flow back to the water inlet chamber a due to the high pressure.

[0051] It should be noted that when the pump is running, when the pressure in the pump is too high, in order to avoid pipeline blockage or other reasons causing too high pressure and the damage to the pump and pipeline caused by the too high pressure, by setting the pressure relief component 7, the pressure of the system can be helped to be stabilized, the stable performance of the pump within the normal working range can be ensured, the pump can be prevented from working under too high or too low pressure. At the same time, by adjusting the set pressure of the pressure relief component 7, the precise adjustment of the system pressure can be realized to meet the requirements under different working conditions.

[0052] However, when the pressure in the pump is below the set threshold value, in order to ensure the sealing performance around the pressure relief component 7, by setting the third sealing structure, the sealing performance between the pressure relief component 7 and the side wall of the accommodating groove 6a can be ensured.

[0053] Specifically, the third sealing structure includes a third sealing part 8 and a fourth sealing part 9 arranged in sequence along the depth direction of the accommodating groove 6a. With such a setting, when the water seeps outwards from between the pressure relief component 7 and the hole wall of the accommodating groove 6a, when passing through the third sealing part 8, if the sealing performance of the third sealing part 8 is good, the overall sealing effect can be achieved. If the sealing of the third sealing part 8 fails, the fourth sealing part 9 can form a sealing structure again on the path of the water flow to ensure that the water does not overflow.

[0054] It can be understood that the number of sealing parts included in the third sealing structure is not limited to the above examples, and can also be three, four, five, etc. Those skilled in the art may also make other changes under the inspiration of 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 all be covered within the protection scope of the embodiments of this specification.

[0055] Specifically, in this embodiment, the bottom of the accommodation groove 6a is provided with the water inlet 6b and the water outlet 6c; the third sealing part 8 is used to seal the pressure relief component 7 and the bottom of the accommodation groove 6a, and the fourth sealing part 9 is used to seal the outer peripheral wall of the pressure relief component 7 and the side wall of the accommodation groove 6a. In this way, the third sealing part 8 is arranged on the bottom of the accommodation groove 6a, so that a seal can be formed between the bottom 21 of the pressure relief component 7 and the pump cover 6. The fourth sealing part 9 is arranged on the periphery of the pressure relief component 7, so that a seal can be formed between the side part of the pressure relief component 7 and the pump cover 6. Thus, different sealing forms are formed at different positions of the pressure relief component 7, and multiple seals can be achieved.

[0056] Specifically, in this embodiment, the third sealing part 8 includes a sealing gasket, and the sealing gasket is located between the pressure relief component 7 and the bottom of the accommodation groove 6a, and covers the water inlet 6b and the water outlet 6c.

[0057] It should be noted that the valve block of the pressure relief component 7 abuts against the sealing gasket, so that the sealing gasket can be pressed tightly on the water inlet 6b and the water outlet 6c to form a seal, preventing the water in the water inlet cavity a and the water outlet cavity b from flowing into each other.

[0058] In this way, the high water pressure formed in the water outlet cavity 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 component 7 from the water outlet cavity b. Even if there is a leak in the sealing gasket, the fourth sealing part 9 can then 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 cavity b can flow from the water inlet 6b to the water outlet 6c and then flow back to the water inlet cavity a again.

[0059] Further, in order to enable the gasket to form a good sealing effect with the pump cover 6, in this embodiment, a ring-shaped sealing rib 61 protrudes from the bottom of the receiving groove 6a, and the ring-shaped sealing rib 61 is disposed around the water inlet 6b and the water outlet 6c. Since the material of the gasket is elastic, when the gasket is clamped between the pressure relief assembly 7 and the pump cover 6, elastic deformation occurs in the area corresponding to the ring-shaped sealing rib 61 of the gasket, enhancing the sealing performance between the two, preventing water leakage, and improving the sealing performance and reliability between the gasket and the pump cover.

[0060] Further, in order to prevent the water outlet 6c from not being fully opened for pressure relief when the gasket deforms, in this embodiment, a ring-shaped diversion groove 6d is recessed from the bottom of the receiving groove 6a, the ring-shaped diversion groove 6d is disposed around the water outlet 6c, and the water inlet 6b is provided at the bottom of the ring-shaped diversion groove 6d. Thus, when the water pressure in the water outlet chamber is too high, after the large amount of water in the water outlet chamber enters the water inlet 6b, it can flow along the ring-shaped diversion groove 6d, enabling a relatively uniform pressure to be exerted on the gasket at the periphery of the water outlet 6c, causing deformation in the area of the gasket corresponding to the ring-shaped diversion groove 6d, compressing the spring, and making room for the deformation of the gasket. When the gasket deforms, the water outlet 6c in the middle area of the ring-shaped diversion groove 6d can be completely exposed, ensuring unobstructed pressure relief.

[0061] Further, in this embodiment, a ring-shaped boss 62 protrudes from the bottom of the ring-shaped diversion groove 6d, the ring-shaped boss 62 is disposed around the water inlet 6b in a ring shape, and protrudes from the bottom of the receiving groove 6a. Thus, when the gasket is placed on the bottom of the receiving groove 6a, a sealing structure is also formed between the ring-shaped boss 62 and the gasket. Compared with directly covering the water inlet 6b and the water outlet 6c with the gasket, adopting this sealing structure can further enhance the sealing performance to prevent the flow of water between the water inlet chamber and the water outlet chamber.

[0062] Further, in this embodiment, a plurality of protrusions 63 protrude from the bottom of the ring-shaped diversion groove 6d, and the plurality of protrusions 63 are arranged at intervals along the circumferential direction of the ring-shaped diversion groove 6d. Since the valve block of the pressure relief assembly 7 presses the gasket against the bottom of the receiving groove 6a, and the ring-shaped diversion groove 6d is provided at the bottom of the receiving groove 6a, the notch area of the gasket corresponding to the ring-shaped diversion groove 6d is in a suspended state. In order to enable the gasket to be tightly pressed and form a larger acting surface, the plurality of protrusions 63 are arranged along the bottom of the ring-shaped diversion groove 6d, which can support the gasket while not affecting the annular diversion function of the ring-shaped diversion groove 6d.

[0063] In other embodiments, it may also be that an annular rib structure protrudes from the bottom of the annular diversion groove 6d, and the above effects can also be achieved. Of course, the structure for supporting the gasket is not limited to the above examples. Those skilled in the art may make other changes under the inspiration of the technical essence of the embodiments of this specification. However, as long as the functions and effects achieved are the same as or similar to those of the embodiments of this specification, they should all be covered within the protection scope of the embodiments of this specification.

[0064] In this embodiment, in order to form a better sealing effect between the gasket and the pump cover 6, the gasket is in interference fit with the side wall of the accommodation groove 6a. In this way, the gasket not only forms a sealing structure with the bottom of the accommodation groove 6a, but also forms a sealing structure between the side walls of the accommodation groove 6a, thereby realizing multiple seals.

[0065] Specifically, in this embodiment, the fourth sealing portion 9 includes a sealing ring, and the sealing ring is sleeved around the pressure relief assembly 7. The sealing ring is in interference fit with the pressure relief assembly 7 to ensure the sealing performance between the sealing ring and the pressure relief assembly 7.

[0066] 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 the circumferential direction on the outer peripheral wall of the pressure relief assembly 7. In this way, the sealing ring is limited within the sealing groove 7a, and the side wall of the sealing groove 7a can prevent the up and down displacement of the sealing ring to ensure the stability of the sealing ring.

[0067] It should be noted that the depth of the sealing groove 7a can be set to be slightly smaller than the diameter of the sealing ring, so that the sealing ring forms an interference fit with the sealing groove 7a and the inner wall of the accommodation groove 6a to achieve a good sealing effect.

[0068] It can be understood that an annular sealing groove can also be provided on the side wall of the accommodation groove 6a, and the annular sealing groove is arranged opposite to the sealing groove 7a, so that both the inner ring part and the outer ring part of the sealing ring can be limited and clamped. Of course, the sealing groove 7a can also be only provided on the side wall of the accommodation groove 6a, and the sealing groove 7a is not provided on the pressure relief assembly 7, and a similar effect can also be achieved.

[0069] In this embodiment, a plurality of accommodating grooves 1a which are spaced apart are recessed on one side of the valve seat 1 away from the pump cover 6; the diaphragm pump 100 further includes a diaphragm 2, the diaphragm 2 is arranged on the side of the valve seat 1 where the plurality of accommodating grooves 1a are provided, and a plurality of pressurizing chambers are jointly enclosed between the diaphragm 2 and the plurality of accommodating grooves 1a; a second sealing structure is arranged on the side of the valve seat 1 facing the diaphragm 2, the second sealing structure includes a plurality of third sealing portions 3 and a fourth sealing portion 4, the plurality of third sealing portions 3 are correspondingly arranged in a ring around the periphery of the plurality of accommodating grooves 1a, and the fourth sealing portion 4 is arranged in a ring around the periphery of the plurality of accommodating grooves 1a and the plurality of third sealing portions 3.

[0070] It should be noted that liquid inlet holes and liquid outlet holes are provided on each of the pressurizing chambers of the diaphragm pump 100. When the diaphragm 2 is squeezed, the volume of the pressurizing chamber becomes smaller, and the medium in the pressurizing chamber is discharged. When the diaphragm 2 deforms away from the valve seat 1, the volume of the pressurizing chamber becomes larger, and the medium in the liquid inlet pipe is sucked into the pressurizing chamber. Since the pressurizing chamber is formed by enclosing 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 pressurizing chamber. It can be understood that when the diaphragm pump 100 is treating water, the medium is water. For the convenience of description hereinafter, the medium is described in detail with water.

[0071] It can be understood that the diaphragm 2 can be deformably arranged, and the material of the diaphragm 2 is set as an elastic material, such as rubber, PVC, PTFE, etc.

[0072] It should also be noted that the plurality of third sealing portions 3 and the fourth sealing portion 4 can both be integrally arranged on the valve seat 1, such as sealing ribs or a sealing groove 7a that cooperates with the diaphragm 2, or can be separate sealing components, such as sealing rings or sealing gaskets, etc. The plurality of third sealing portions 3 can be separate sealing members, or can be on a sealing member formed integrally, and form a local structure capable of sealing the periphery of the notch of each of the accommodating grooves 1a.

[0073] It should also be noted that in order to provide a greater flux, the diaphragm pump 100 in this solution can be set as a five-chamber diaphragm pump 100. It can be understood that the features of the diaphragm pump 100 described hereinafter are not limited to being applied to the five-chamber diaphragm pump 100, but can also be applied to diaphragm pumps 100 with different numbers of chambers, which can be specifically determined according to actual situations, and this embodiment of the specification does not make any limitations.

[0074] The brush pump adopted in this application has a large instantaneous starting power for a large flux, so the sealing performance requirements for the pressurizing chamber are higher.

[0075] In the technical solution of the present utility model, a plurality of independently operating pressurizing chambers are jointly enclosed between the valve seat 1 and the diaphragm 2. By providing the plurality of third sealing portions 3, one third sealing portion 3 is correspondingly provided around the periphery of each receiving groove 1a, which can seal each of the pressurizing chambers separately, avoiding leakage, flow-through and instability of the medium between two adjacent pressurizing chambers arranged adjacent to each other, so as to ensure the normal and efficient operation of the diaphragm pump 100, and also preventing the medium in each pressurizing chamber from overflowing outward. At the same time, the fourth sealing portion 4 is provided around the periphery of the plurality of receiving grooves 1a and the plurality of third sealing portions 3, preventing the medium in the plurality of pressurizing chambers from overflowing outward, so that the external circuit control components are not damaged by moisture. Thus, by providing a double sealing structure, it can ensure the isolation and sealing between two adjacent pressurizing chambers, and also provide double sealing guarantee for protecting the external circuit control components.

[0076] It can be understood that the second sealing structure is not limited to including the third sealing portion 3 and the fourth sealing portion 4. In order to achieve a better sealing effect, the second sealing structure can also be provided with more sealing portions, successively surrounding the outer part of the fourth sealing portion 4. When the third sealing portion 3 and the fourth sealing portion 4 fail on the path of water overflow, more sealing portions can still play a sealing role. The number and form of the sealing portions are not limited to the above examples. Those skilled in the art 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 those of the embodiments of this specification, they should all be covered within the protection scope of the embodiments of this specification.

[0077] It should also be noted that in the prior art, a brushed motor is generally used as a driving device to drive the diaphragm 2 to extrude and move. In a brushed motor, multiple sets of coil windings are connected to a commutator, and the commutator abuts against a carbon brush. During the rotation of the rotor, the commutator also rotates accordingly. The alternating change of the current direction in the multiple sets of coil windings is completed 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 volume of the current brushed motor is generally large, resulting in the diaphragm pump 100 occupying a relatively large overall installation space. The carbon powder generated by the wear of the carbon brush will reduce the insulation strength of the whole machine, and heat will be generated during the wear process, and a relatively large noise will be produced.

[0078] In the technical solution of the present application, the type of the drive motor is a brushless motor. The brushless motor consists of a motor main body and a driver, and is a typical mechatronic product. Since the brushless motor operates in a self-controlled manner, it does not require an additional starting winding on the rotor like a synchronous motor under heavy-load starting with variable-frequency speed regulation, nor does it generate oscillations and loss of synchronization when the load suddenly changes. For the permanent magnets of brushless motors with medium and small capacities, rare-earth neodymium iron boron (Nd-Fe-B) materials with high magnetic energy levels are now mostly used. Therefore, the volume of the rare-earth permanent magnet brushless motor is reduced by one frame number compared to a three-phase asynchronous motor of the same capacity, and there is no need to use carbon brushes and commutators in traditional brushed motors, which can further reduce the volume of the booster pump.

[0079] Compared with brushed motors, the brushless motor removes the carbon brushes. The most direct change is the absence of the electric sparks generated during the operation of the brushed motor, which greatly reduces the interference of the electric sparks to the remote control radio equipment. At the same time, without the carbon brushes, the friction during the operation of the brushless motor is greatly reduced, the operation is smooth, and the noise is much lower.

[0080] Specifically, in the present embodiment, the third sealing portion 3 includes a first rib protruding from one side of the valve seat 1 facing the diaphragm 2. Since the first rib protrudes from the end face 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, when the end face of the valve seat 1 is in contact with the diaphragm 2, the first rib presses the diaphragm 2. Through the pressing action of the first rib and the elastic deformation of the diaphragm 2, the sealing performance between the two is enhanced, preventing water leakage and improving the sealing performance and reliability of the valve.

[0081] In this way, the third sealing portion 3 is directly formed on the valve seat 1. When the valve seat 1 is formed, the third sealing portion 3 can be directly formed without setting additional components, the manufacturing process is simple, the cost is low, and the assembly is also convenient.

[0082] Furthermore, in the present embodiment, the multiple first ribs forming the multiple third sealing portions 3 are connected to each other to form a first rib structure. In this way, when forming the multiple third sealing portions 3, ribs with the same thickness can be set. By connecting the multiple ribs into one body, the pressure is more evenly distributed to the diaphragm 2, avoiding local pressure concentration. At the same time, a larger contact area can be formed, enhancing the sealing performance with the diaphragm 2, reducing the risk of leakage, and improving the consistency of the sealing effect.

[0083] Specifically, in this embodiment, the plurality of receiving grooves 1a are arranged at intervals along the circumferential direction of the valve seat 1; in this way, a plurality of pressurizing chambers are formed and arranged at intervals in the circumferential direction. 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 peripheral area of the plurality of receiving grooves 1a, the outer annular rib 32 is arranged around the outer peripheral area of the plurality of receiving grooves 1a, and each connecting rib 33 is connected between the inner annular rib 31 and the outer annular rib 32 and is located at the interval between two adjacent receiving grooves 1a.

[0084] In this way, the plurality of rib segments sequentially connected by the inner annular rib 31 and the plurality of rib segments sequentially connected by the outer annular rib 32 sequentially form partial structures for sealing each of the receiving grooves 1a, and one connecting rib 33 between two adjacent receiving grooves 1a arranged adjacent to each other can simultaneously serve as a sealing structure separated by the two receiving grooves 1a. The structure is simple and the molding is also simple.

[0085] Specifically, in this embodiment, the fourth sealing portion 4 includes a second rib 41 protruding from one side of the valve seat 1 facing the diaphragm 2. In this way, the fourth sealing portion 4 is also formed integrally with the valve seat 1, which not only enables the fourth sealing portion 4 to form a sealed structure when the valve seat 1 is molded, but only needs to ensure the sealing performance between the second rib 41 and the diaphragm 2 during assembly. When the fourth sealing portion 4 is molded separately, in addition to ensuring the sealing performance between the second rib 41 and the diaphragm 2, it is also necessary to ensure the sealing performance between the second rib 41 and the valve seat 1. The sealing structure and molding process in this embodiment are simple, with low cost and convenient assembly.

[0086] In this embodiment, an annular groove 1b is recessed on one side of the valve seat 1 facing the diaphragm 2. The annular groove 1b is arranged around the outer periphery of the plurality of third sealing portions 3, and the fourth sealing portion 4 is arranged at the bottom of the annular groove 1b.

[0087] 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 adapted to the annular groove 1b.

[0088] In this way, by arranging the fourth sealing portion 4 at the bottom of the annular groove 1b, the fourth sealing portion 4 and the plurality of third sealing portions 3 are not on the same horizontal plane in the radial direction of the valve seat 1. After the plurality of third sealing portions 3 are sealed, a sealing ring structure is also formed between the annular protrusion of the diaphragm 2 and the inner peripheral wall of the annular groove 1b of the valve seat 1, so that a sealed structure is formed between the third sealing portion 3 and the fourth sealing portion 4, achieving a good sealing effect.

[0089] In yet another embodiment, the diaphragm pump 100 further includes a mounting bracket 5 provided 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 or repaired, the valve seat 1 can be disassembled, and the diaphragm 2 can be directly replaced or repaired. The disassembly and assembly are simple, and the maintenance is convenient.

[0090] And because the diaphragm 2 is subjected to the clamping force between the mounting bracket 5 and the valve seat 1, therefore, by adjusting the locking degree between the mounting bracket 5 and the valve seat 1, the clamping force for pressing the diaphragm 2 can be adjusted, and the adjustment is convenient.

[0091] Further, in this embodiment, a mounting groove 5a is recessed on the side of the mounting bracket 5 facing the valve seat 1, and a plurality of through holes 5b penetrate through the bottom of the mounting groove 5a, and each through hole 5b is correspondingly arranged with a boosting cavity; the diaphragm 2 is received in the mounting groove 5a, and the diaphragm 2 includes a bottom portion 21 and an annular side portion 22 extending from the outer peripheral edge of its bottom portion 21 toward the valve seat 1; the valve seat 1 has a side wall provided inside the annular side portion 22, and the annular side portion 22 is clamped between the side wall of the valve seat 1 and the inner side wall of the mounting groove 5a.

[0092] It should be noted that by providing a plurality of the through holes 5b on the mounting bracket 5, it is convenient for the plurality of driving portions of the driving mechanism to pass through the plurality of through holes 5b and be connected to the diaphragm 2, so as to drive the diaphragm 2 to move and generate deformation, thereby realizing the extrusion of the corresponding boosting cavity to generate deformation.

[0093] The diaphragm 2 is received in the mounting groove 5a, the diaphragm 2 is supported on the bottom of the mounting groove 5a, the outer side wall of the annular side portion 22 of the diaphragm 2 can be in contact with the inner side wall of the mounting groove 5a, and the inner side 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 clamped between the side wall of the valve seat 1 and the inner side wall of the mounting groove 5a. It can be understood that the annular side portion 22 can be set to be in 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 side wall of the valve seat 1.

[0094] Further, in order to further ensure the sealing effect, in this embodiment, a ring-shaped protrusion is convexly provided on the side wall of the valve seat 1. The annular side portion 22 protrudes from the ring-shaped 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. The annular seal 10 abuts against the protruding end face 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 tightly 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, and better sealing can be achieved between the side wall of the valve seat 1 and the inner side wall of the mounting groove 5a.

[0095] The present invention also provides a water treatment device, which includes a filtration device and a diaphragm pump 100. The specific structure of the diaphragm pump 100 refers to the above embodiment. Since this water treatment device adopts all the technical solutions of the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, and will not be elaborated here one by one.

[0096] The above are only exemplary embodiments of the present invention, and do not limit the patent scope of the present invention. Any equivalent structural transformation made under the technical concept of the present invention by using the content of the specification and drawings of the present invention, or direct / indirect application in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A diaphragm pump, characterized in that: include: Valve seat; A pump cover is arranged on one side of the valve seat to enclose the valve seat to form a water inlet cavity and a water outlet cavity which are arranged at intervals. 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 connected to the water outlet cavity, and the water outlet is connected to the water inlet cavity; and, A pressure relief component, disposed in the accommodating tank, and used to connect and disconnect the water inlet and the water outlet; Among them, a first sealing structure is arranged in the receiving groove, and the first sealing structure is arranged on one side of the notch of the receiving groove near the water inlet and the water outlet, and the first sealing structure includes a first sealing part and a second sealing part arranged between the pressure relief assembly and the inner wall of the receiving groove, and the first sealing part and the second sealing part are arranged in sequence along the depth direction of the receiving groove.

2. The diaphragm pump according to claim 1, characterized in that The bottom of the accommodating tank is provided with the water inlet and the water outlet; The first sealing portion is used to seal the pressure relief component with the bottom of the accommodating groove, and the second sealing portion is used to seal the outer peripheral wall of the pressure relief component with the side wall of the accommodating groove.

3. The diaphragm pump according to claim 2, characterized in that The first 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.

4. The diaphragm pump according to claim 3, characterized in that: An annular sealing rib is convexly provided on the bottom of the accommodating groove, and the annular sealing rib is arranged on the periphery of the water inlet and the water outlet.

5. The diaphragm pump according to claim 3, characterized in that: An annular guide groove is recessed at the bottom of the accommodating groove, the annular guide groove is arranged at the periphery of the water outlet, and the water inlet is arranged at the bottom of the annular guide groove.

6. The diaphragm pump according to claim 5, characterized in that An annular boss is convexly provided at the bottom of the annular guide groove, and the annular boss is arranged around the periphery of the water inlet and protrudes from the bottom of the accommodating groove.

7. The diaphragm pump according to claim 5, characterized in that A plurality of convex portions are convexly arranged at the bottom of the annular guide groove, and the plurality of convex portions are arranged at intervals along the circumference of the annular guide groove.

8. The diaphragm pump according to claim 3, characterized in that The sealing gasket is interference-fitted with the side wall of the accommodating groove.

9. The diaphragm pump according to claim 1, characterized in that: The second sealing portion includes a sealing ring, and the sealing ring is sleeved on the periphery of the pressure relief component.

10. The diaphragm pump according to claim 9, characterized in that The outer peripheral wall of the pressure relief component is concavely provided with a sealing groove for installing the sealing ring along its circumference.

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

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