Booster pump head, booster pump and water treatment equipment

Abstract

The utility model discloses a booster pump head, booster pump and water treatment equipment, and relates to the technical field of water pumps, the booster pump head comprises a support assembly, a pump cover and a sealing ring, the support assembly comprises a mounting support, a valve seat and a diaphragm, the mounting support is provided with a first end and a second end which are oppositely arranged, and the first end and the second end are oppositely arranged. A plurality of connecting parts are arranged at the first end of the mounting bracket in the circumferential direction of the mounting bracket; the pump cover is provided with a butt joint end installed with the first end of the installation support in a matched mode, and the butt joint end of the pump cover is provided with a plurality of matching parts connected with the connecting parts in a matched mode. The sealing ring is arranged between the pump cover and the support assembly, and at least the inner edge of the sealing ring is located on the inner side of a connecting line among the multiple connecting parts. According to the technical scheme, by changing the position of the connecting part, a sealing ring section on the outer side of the center connecting line of the screws does not exist any more, and the sealing reliability of the booster pump head is improved.

Description

Technical Field

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

[0002] At present, for the pump head of a diaphragm pump, a sealing ring is arranged between the pump cover and the pump cover bracket. There is a section of the existing sealing ring that exceeds the center connection line of the screws. After the water pump runs for a long time, the pump cover will warp due to the heat generated by the pump body. The downward pressure of the pump cover on this section of the rubber sealing ring is insufficient, resulting in a decrease in the sealing effect of this part of the sealing ring and low sealing reliability. Summary of the Utility Model

[0003] The main purpose of the utility model is to provide a booster pump head, a booster pump and a water treatment device, aiming to improve the sealing reliability of the existing booster pump head.

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

[0005] A bracket assembly, including a mounting bracket, a valve seat and a diaphragm. The mounting bracket has a first end and a second end arranged oppositely. A plurality of connecting parts are arranged along the circumferential direction of the first end of the mounting bracket.

[0006] A pump cover, having a docking end that is fitted and installed with the first end of the mounting bracket. A plurality of fitting parts adapted to be connected with the plurality of connecting parts are arranged at the docking end of the pump cover; and,

[0007] A sealing ring, arranged between the pump cover and the bracket assembly. At least the inner edge of the sealing ring is located inside the connection line between the plurality of connecting parts.

[0008] In an optional embodiment, the whole sealing ring is located inside the connection line between the plurality of connecting parts.

[0009] In an optional embodiment, the connection line between the plurality of connecting parts is the connection line of the centers of the plurality of connecting parts.

[0010] In an optional embodiment, the valve seat is arranged on the inner side wall of the mounting bracket. The diaphragm includes a bottom and a side part. The bottom is located on the side of the valve seat facing away from the pump cover. The side part is clamped between the outer peripheral wall of the valve seat and the inner side wall of the mounting bracket. An installation groove is jointly defined among the side part of the diaphragm, the mounting bracket and the valve seat;

[0011] The sealing ring is installed in the installation groove to block the gap among the side part of the diaphragm, the mounting bracket and the valve seat.

[0012] In an alternative embodiment, the depth of the installation groove is a, and the thickness of the sealing ring is h, where 0.5a < h < 1.25a.

[0013] In an alternative embodiment, the pump cover is provided with a pressing portion corresponding to the sealing ring. The pressing portion at least partially extends into the installation groove and abuts against the sealing ring.

[0014] In an alternative embodiment, the length that the pressing portion extends into the installation groove is L, and the depth of the installation groove is a, where 0.3a < L < 0.7a.

[0015] In an alternative embodiment, a positioning structure is provided between the pressing portion and the sealing ring. The positioning structure includes a positioning portion provided on the pressing portion and a mating portion provided on the sealing ring, so that when the pressing portion abuts against the sealing ring, the positioning portion and the mating portion are in positioning cooperation.

[0016] In an alternative embodiment, a water outlet flow channel and a water inlet flow channel are defined among the mounting bracket, the pump cover and the valve seat. The water inlet flow channel and the water outlet flow channel are arranged at intervals;

[0017] The diaphragm further includes a partitioning portion provided at the bottom. The partitioning portion is used to divide the cavity formed by enclosing the diaphragm and the valve seat into a plurality of pressurizing cavities and a water outlet cavity, and the water outlet cavity is communicated with the plurality of pressurizing cavities;

[0018] The water inlet flow channel is communicated with the plurality of pressurizing cavities, and the water outlet cavity is communicated with the water outlet flow channel.

[0019] In an alternative embodiment, the number of one of the connecting portion and the mating portion is not less than the number of the pressurizing cavities.

[0020] In an alternative embodiment, the connecting portion and the mating portion are connected by a screw member.

[0021] To achieve the above object, the present application further provides a booster pump, including the booster pump head described above.

[0022] To achieve the above object, the present application further provides a water treatment device, including the booster pump described above.

[0023] The technical solution of the present utility model changes the position of the connecting part, so that at least the inner edge of the sealing ring is located inside the connection line between the plurality of connecting parts, that is, the inner edge of the sealing ring does not exceed the connection line between the plurality of connecting parts, and there is no longer a sealing ring section outside the center connection line of the screws, avoiding the phenomenon that the sealing effect of the sealing ring section outside the center connection line of the screws is prone to decline and the reliability is low, and improving the sealing reliability of the booster pump head. Description of the Drawings

[0024] 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 according to the structures shown in these drawings.

[0025] Figure 1 Schematic diagram of the installation of the sealing ring of the existing diaphragm pump;

[0026] Figure 2 Schematic diagram of the structure of an embodiment of the booster pump provided by the present utility model;

[0027] Figure 3 For Figure 2 Schematic diagram of the installation of the sealing ring in

[0028] Figure 4 For Figure 2 Schematic diagram of the bracket assembly in

[0029] Figure 5 Schematic diagram of the structure of an embodiment of the booster pump head provided by the present utility model;

[0030] Figure 6 For Figure 2 Partial enlarged view of A in

[0031] Figure 7 Schematic diagram of the installation of the sealing ring

[0032] Figure 8 Stereogram of an embodiment of the pump cover provided by the present utility model.

[0033] Explanation of the reference numerals in the drawings:

[0034] 100, booster pump; 10, booster pump head; 20, bracket assembly; 21, mounting bracket; 22, valve seat; 23, diaphragm; 24, connecting part; 25, mounting groove; 30, pump cover; 31, mating part; 32, pressing part; 33, positioning part; 34, mating part; 35, separating part; 37, boosting chamber; 38, water outlet chamber; 40, sealing ring; 50, pendulum wheel; 51, base; 52, eccentric wheel.

[0035] The realization of the purpose, functional features and advantages of the present utility model will be further described in conjunction with the embodiments with reference to the accompanying drawings. Detailed implementation manners

[0036] 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. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0037] It should be noted that if there are directional indications (such as up, down, left, right, front, back,...) involved in the embodiments of the present utility model, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0038] In addition, if there are descriptions such as "first", "second", etc. involved in the embodiments of the present utility model, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, or solution B, or the solution where A and B are satisfied simultaneously. In addition, the technical solutions between the embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

[0039] Please refer to Figure 1 , currently, for the pump head of a diaphragm pump, a sealing ring is provided between the pump cover and the pump cover bracket. There is a section of the existing sealing ring that exceeds the center connection line of the screws. After the water pump runs for a long time, the pump cover will warp due to the heat generated by the pump body, and the downward pressure of the pump cover on this section of the rubber sealing ring is insufficient, which will cause the sealing effect of this part of the sealing ring to decline and the sealing reliability is relatively low.

[0040] The present utility model provides a booster pump head 10. Refer to Figures 2 to 4 , in an embodiment of the present utility model, the booster pump head 10 includes a bracket assembly 20, a pump cover 30 and a sealing ring 40. The bracket assembly 20 includes a mounting bracket 21, a valve seat 22 and a diaphragm 23. The mounting bracket 21 has a first end and a second end arranged oppositely. A plurality of connecting portions 24 are arranged along the circumferential direction of the first end of the mounting bracket 21; the pump cover 30 has a docking end adapted to be mounted with the first end of the mounting bracket 21, and a plurality of mating portions 3431 adapted to be connected with the plurality of connecting portions 24 are arranged at the docking end of the pump cover 30; the sealing ring 40 is arranged between the pump cover 30 and the bracket assembly 20, and at least the inner edge of the sealing ring 40 is located inside the connection line between the plurality of connecting portions 24.

[0041] The technical solution of the present utility model changes the position of the connecting portion 24, so that at least the inner edge of the sealing ring 40 is located inside the connection line between the plurality of connecting portions 24, that is, the inner edge of the sealing ring 40 does not exceed the connection line between the plurality of connecting portions 24, and there is no longer a section of the sealing ring 40 outside the center connection line of the screws, avoiding the phenomenon that the sealing effect of the section of the sealing ring 40 outside the center connection line of the screws is easy to decline and the reliability is low, and improving the sealing reliability of the booster pump head 10.

[0042] It should be noted that a booster chamber 37 will be formed by enclosing between the diaphragm 23 and the valve seat 22. Under the movement of the diaphragm 23, the pressure in the booster chamber 37 will change accordingly. In order to prevent the conveyed medium in the booster chamber 37 from leaking from the gap between the diaphragm 23 and the valve seat 22, the sealing ring 40 is arranged between the pump cover 30 and the bracket assembly 20. Under the action of the downward pressure of the pump cover 30, it deforms to block the gap between the diaphragm 23 and the valve seat 22, avoiding the leakage of the conveyed medium. Among them, the conveyed medium varies according to the type of diaphragm pump. For example, the conveyed medium can be air, liquid or water.

[0043] The connecting portion 24 and the mating portion 3431 are adaptively connected. Here, it can be considered that the pump cover 30 applies a downward pressure to the mounting bracket 21 through the mating portion 3431. Therefore, the connecting portion 24 can be regarded as a force application point. It can be understood that force is transmitted along a straight line. Therefore, once the sealing ring 40 is located outside the connection line of the two connecting portions 24, at this time, the pressure received is bound to be less than the pressure received by the part located inside the connection line of the two connecting portions 24, and the sealing effect of this part of the sealing ring 40 is not as good as that of the part located inside the connection line of the two connecting portions 24.

[0044] The specific implementation forms of the connecting portion 24 and the mating portion 3431 are not limited. It can be in the form of a snap and a slot, or in the form of a threaded post and a threaded hole, or it can be all threaded holes or mounting holes, and then threaded connection is carried out through a threaded connector, etc. It is not limited here.

[0045] The connection lines are formed by pairwise connection between every two adjacent connecting portions 24. At least the inner edge of the sealing ring 40 is located inside the connection lines between the multiple connecting portions 24. It can be that the inner edge of the sealing ring 40 is located inside the connection lines between the multiple connecting portions 24, the outer edge of the sealing ring 40 is located on, or even outside, the connection lines between the multiple connecting portions 24. It can also be that both the inner edge and the outer edge of the sealing ring 40 are located inside the connection lines between the multiple connecting portions 24, etc. It is not limited here.

[0046] In a further embodiment, the entire sealing ring 40 is located inside the connection lines between the multiple connecting portions 24, and the entire sealing ring 40 is within the stress range of the multiple connecting portions 24. Even if the pump cover 30 warps due to the heat generated by the pump body after the pump runs for a long time, the sealing effect will not decrease, and the sealing reliability is high.

[0047] The connection lines between the multiple connecting portions 24 can be the connection lines of the center points of the connecting portions 24, or the connection lines of the outer edges of the connecting portions 24. It is not limited here. It can be understood that the center point of the connecting portion 24 can be regarded as the stress point. Therefore, in one embodiment, the connection lines between the multiple connecting portions 24 are the connection lines of the centers of the multiple connecting portions 24. In the technical solution of this embodiment, the connection lines between the multiple connecting portions 24 are defined as the connection lines of the centers of the multiple connecting portions 24, so that the connection lines can more accurately define the force application range of the pump cover 30 on the bracket assembly 20, and by applying it to define the installation position of the sealing ring 40, the reliability of the sealing ring 40 can be further improved.

[0048] At the same time, in one embodiment, the connection lines between the multiple connecting portions 24 are the connection lines of the centers of the multiple connecting portions 24, and the entire sealing ring 40 is located inside the connection lines between the multiple connecting portions 24. At this time, the pressure exerted by the pump cover 30 on the entire sealing ring 40 is the most stable, the pressing is uniform, and the sealing reliability of the sealing ring 40 is the highest.

[0049] Please refer to Figure 2 and Figures 5 to 8Considering that during the assembly of the booster pump head 10, the sealing ring 40 is prone to displacement, being pressed and damaged after deviating from the predetermined installation position, and failing to achieve the sealing effect, in one embodiment, the valve seat 22 is arranged on the inner side wall of the mounting bracket 21. The diaphragm 23 includes a bottom and a side portion. The bottom is located on the side of the valve seat 22 facing away from the pump cover 30, and the side portion is clamped between the outer peripheral wall of the valve seat 22 and the inner side wall of the mounting bracket 21. An installation groove 25 is jointly defined among the side portion of the diaphragm 23, the mounting bracket 21, and the valve seat 22; the sealing ring 40 is installed in the installation groove 25 to block the gap among the side portion of the diaphragm 23, the mounting bracket 21, and the valve seat 22.

[0050] In the technical solution of this embodiment, the installation groove 25 is jointly defined among the side portion of the diaphragm 23, the mounting bracket 21, and the valve seat 22. Installing the sealing ring 40 in the installation groove 25 can limit the sealing ring 40, avoiding the phenomenon that the sealing ring 40 is displaced during the assembly of the booster pump head 10, and preventing the problems that the sealing ring 40 is pressed and damaged due to deviating from the predetermined installation position and fails to achieve the sealing effect.

[0051] Moreover, the sealing ring 40 can block the gap among the side portion of the diaphragm 23, the mounting bracket 21, and the valve seat 22. On the one hand, it can prevent the conveyed medium in the booster cavity 37 from leaking through the gap between the diaphragm 23 and the valve seat 22. On the other hand, it can prevent the external conveyed medium from flowing into the cavity below the diaphragm 23 through the gap flow path between the diaphragm 23 and the mounting bracket 21, thus affecting the movement of the moving components in the cavity.

[0052] Further, in one embodiment, the depth of the installation groove 25 is a, and the thickness of the sealing ring 40 is h, where 0.5a < h < 1.25a. If the depth of the installation groove 25 is too small, good sealing performance cannot be guaranteed. If the depth is too large, unnecessary costs will be increased and the manufacturing difficulty will be increased. When the thickness of the sealing ring 40 is too large, greater than 1.25 times the depth of the installation groove 25, a large force is required to press it, and the cost is also high. When the thickness of the sealing ring 40 is too small, less than half of the depth of the installation groove 25, the sealing effect will be affected. Therefore, setting the thickness of the sealing ring 40 to 0.5 times to 1.25 times the depth of the installation groove 25 can balance the sealing effect and cost.

[0053] In addition, in order to enhance the limiting effect and sealing effect on the sealing ring 40, in one embodiment, the pump cover 30 is provided with a pressing portion 32 corresponding to the sealing ring 40. The pressing portion 32 at least partially extends into the installation groove 25 and abuts against the sealing ring 40.

[0054] In the solution of this embodiment, the pressing portion 32 is provided to press the sealing ring 40, and the portion where the pressing portion 32 abuts against the sealing ring 40 is located in the installation cavity. At this time, the installation cavity can limit the pressing portion 32 and the sealing ring 40 at the same time, improving the stability of their abutment. Moreover, under the pressing of the pressing portion 32, the sealing ring 40 is extruded, which can not only improve the sealing effect between the pressing portion 32 and the sealing ring 40, but also the pressing portion 32 can play a limiting role when extruded into the sealing ring 40, further preventing the sealing ring 40 from shifting during the assembly of the booster pump head 10 and improving the installation reliability of the sealing ring 40. In addition, the sealing ring 40 can also undergo elastic deformation and at least partially fill the gap between the side of the diaphragm 23, the installation bracket 21 and the valve seat 22, further enhancing the sealing effect of the sealing ring 40.

[0055] Further, the length of the pressing portion 32 extending into the installation groove 25 should not be too long, otherwise, the sealing ring 40 will be compressed too much and easily damaged. Nor should it be too short, otherwise, the pressing force on the sealing ring 40 will be insufficient, affecting the sealing effect. Therefore, in one embodiment, the length of the pressing portion 32 extending into the installation groove 25 is L, and the depth of the installation groove 25 is a, where 0.3a < L < 0.7a. With this setting, the length of the pressing portion 32 extending into the installation groove 25 is less than 70% of the groove depth, avoiding excessive compression of the sealing ring 40. The length of the pressing portion 32 extending into the installation groove 25 is greater than 30% of the groove depth, ensuring that it can apply sufficient pressure to the sealing ring 40 and guaranteeing the sealing effect and the limiting effect on the sealing ring 40.

[0056] It should be emphasized that the sum of the length of the pressing portion 32 and the thickness of the sealing ring 40 should be greater than or equal to the depth of the installation groove 25, that is, h + L ≥ a. Only with this setting can it be ensured that the pressing portion 32 can press the sealing ring 40.

[0057] Of course, in a further embodiment, h + L ≤ 1.3a, so as to ensure that the sealing ring 40 is not compressed too much and play a protective role for the sealing ring 40.

[0058] Further, in order to ensure the stability of the pressing of the pressing portion 32 against the sealing ring 40, in an alternative embodiment, a positioning structure is provided between the pressing portion 32 and the sealing ring 40. The positioning structure includes a positioning portion 33 provided on the pressing portion 32 and a mating portion 3431 provided on the sealing ring 40, so that when the pressing portion 32 abuts against the sealing ring 40, the positioning portion 33 and the mating portion 3431 are in positioning cooperation.

[0059] In the solution of this embodiment, by providing a positioning structure between the pressing portion 32 and the sealing ring 40, when the pressing portion 32 abuts against the sealing ring 40, the positioning portion 33 and the mating portion 3431 can be in positioning cooperation. When assembling the pump cover 30, the pressing portion 32 can be positioned, making the pressing between the two more stable.

[0060] Specifically, the specific implementation forms of the positioning portion 33 and the mating portion 3431 are not limited. It can be the cooperation of a protrusion and a groove, or the form of two magnetic attraction portions, etc., which are not limited herein. In one embodiment, the positioning portion 33 includes a protrusion provided at the bottom of the pressing portion 32, and the mating portion 3431 includes a groove provided on the sealing ring 40. Through the cooperation of the protrusion and the groove, on the one hand, the positioning and installation of the pressing portion 32 can be achieved. On the other hand, since the area of the bottom of the protrusion is small, when the pressing portion 32 uses the protrusion to press the sealing ring 40, it is easier to squeeze the sealing ring 40, causing the sealing ring 40 to deform.

[0061] Further, a water outlet channel and a water inlet channel are defined among the mounting bracket 21, the pump cover 30, and the valve seat 22. The water inlet channel and the water outlet channel are arranged at intervals; the diaphragm 23 further includes a partitioning portion 35 provided at the bottom. The partitioning portion 35 is used to divide the cavity formed by enclosing the diaphragm 23 and the valve seat 22 into a plurality of pressurizing chambers 37 and a water outlet chamber 38, and the water outlet chamber 38 is communicated with the plurality of pressurizing chambers 37; the water inlet channel is communicated with the plurality of pressurizing chambers 37, and the water outlet chamber 38 is communicated with the water outlet channel.

[0062] In the technical solution of this embodiment, the water inlet channel and the water outlet channel are arranged at intervals, which can prevent the water flowing into the water inlet channel from directly flowing out of the water outlet channel. The water inlet channel is communicated with the plurality of pressurizing chambers 37, and the water outlet chamber 38 is communicated with the water outlet channel. Therefore, the water flowing into the water inlet channel is pressurized by the pressurizing chambers 37 and then converges to the water outlet chamber 38 and flows out through the water outlet channel from the water outlet chamber 38.

[0063] Specifically, the bottom wall of the diaphragm 23 can move towards the valve seat 22 to change the size of the pressurizing chamber 37, thereby pressurizing the water flow. A plurality of pressurizing chambers 37 are jointly enclosed between the valve seat 22 and the diaphragm 23. When the diaphragm 23 moves in the direction away from the valve seat 22, the size of the pressurizing chamber 37 is increased, so that water enters the pressurizing chamber 37 from the water inlet passage, completing the water absorption action. When the diaphragm 23 moves in the direction close to the valve seat 22, the size of the pressurizing chamber 37 is decreased, pressurizing the water and delivering it to the water outlet chamber 38.

[0064] The pressure pump head 10 further includes a pendulum seat and an eccentric wheel 52. The pendulum seat includes a base 51 and a plurality of pendulums 50 rotatably connected to the base 51. The pendulum 50 is fixedly connected to the diaphragm 23. The eccentric wheel 52 abuts against the base 51 of the pendulum seat and is used for driving connection with the output shaft portion of the driving motor. Since the eccentric wheel 52 is drivingly connected to the output shaft portion, when the output shaft portion rotates, the eccentric wheel 52 will perform eccentric rotation, thereby driving the pendulum seat to swing in the axial direction of the driving motor. At this time, the pendulum 50 is fixedly connected to the diaphragm 23. Under the swing of the pendulum seat, the volume of the pressurizing chamber 37 will be changed, pressurizing the liquid flowing through the chamber, allowing water to enter the pressurizing chamber 37 from the water inlet passage, and flowing out from the water outlet passage after being pressurized under the action of the diaphragm 23 and the valve seat 22.

[0065] The pump head assembly provided by the embodiment of the present application has 3 to 6 pressurizing chambers 37. Therefore, in the 360 degrees of one rotation, the work done by each pressurizing chamber 37 only needs to rotate 120 degrees to 60 degrees. In other words, the diaphragm booster pump allows a relatively long work overlap between the pressurizing chambers 37 within one cycle. That is, before the work of one pressurizing chamber 37 is completed, the next pressurizing chamber 37 starts to take over in advance, so that the water absorption and drainage are smoother and the vibration and noise are lower.

[0066] Further, in one embodiment, the number of one of the connecting portion 24 and the mating portion 3431 is not less than the number of the pressurizing chambers 37.

[0067] It can be understood that the pressurizing chamber 37 is a chamber for pressurizing water flow. The sealing ring 40 is relatively close to the pressurizing chamber 37 and is liable to become loose under the influence of the pressurizing chamber 37. Therefore, the pressurizing chamber 37 can be regarded as one of the sources affecting the sealing ring 40. The connecting portion 24 is used to apply a downward pressure to the sealing ring 40 to fix the sealing ring 40. Therefore, when the number of the connecting portion 24 or the mating portion 3431 is less than the number of the pressurizing chambers 37, the sealing ring 40 will be liable to become loose due to insufficient downward pressure. Therefore, setting the number of either the connecting portion 24 or the mating portion 3431 to be not less than the number of the pressurizing chambers 37 can further ensure the stability of the sealing ring 40 and ensure the sealing effect.

[0068] In addition, the connecting portion 24 and the mating portion 3431 are connected by a screw member. In this embodiment, the connecting portion 24 and the mating portion 3431 are configured as threaded holes or mounting holes and are connected by a screw member. Thus, by adjusting the screw member, the distance between the pump cover 30 and the mounting bracket 21 can be adjusted to adjust the magnitude of the downward pressure of the pump cover 30 on the sealing ring 40, which also facilitates the installation between the pump cover 30 and the mounting bracket 21.

[0069] The present utility model further provides a booster pump 100, which includes a booster pump head 10. The specific structure of the booster pump head 10 refers to the above embodiment. Since this booster pump 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, which will not be elaborated herein one by one.

[0070] The present utility model further provides a water treatment device, which includes a booster pump. The specific structure of the booster pump refers to the above embodiment. Since the 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, which will not be elaborated herein one by one. Among them, the specific form of the water treatment device is not limited. It can be a water heater, a water purifier, etc. In one embodiment, the water treatment device is a water purifier.

[0071] The above description is only an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformation made under the technical concept of the present utility model by using the content of the specification and drawings of the present utility model, or any direct / indirect application in other related technical fields is included in the patent protection scope of the present utility model.

Claims

1. A booster pump head, characterized in that: include: A bracket assembly, comprising a mounting bracket, a valve seat and a diaphragm, wherein the mounting bracket has a first end and a second end arranged opposite to each other, and the first end of the mounting bracket is provided with a plurality of connecting parts along its circumference; A pump cover, having a butt end mounted in cooperation with the first end of the mounting bracket, wherein the butt end of the pump cover is provided with a plurality of matching portions adapted to be connected with the plurality of connecting portions; as well as, A sealing ring is arranged between the pump cover and the bracket assembly, and at least the inner edge of the sealing ring is located on the inner side of the connection line between the multiple connecting parts.

2. The booster pump head according to claim 1, characterized in that: The sealing ring is entirely located inside the connecting line between the plurality of connecting parts.

3. The booster pump head according to claim 1, characterized in that: The connecting line between the multiple connecting parts is a connecting line between the centers of the multiple connecting parts.

4. The booster pump head according to claim 1, characterized in that: The valve seat is arranged on the inner side wall of the mounting bracket, the diaphragm comprises a bottom and a side portion, the bottom portion is located on the side of the valve seat facing away from the pump cover, the side portion is sandwiched between the outer peripheral wall of the valve seat and the inner side wall of the mounting bracket, and the side portion of the diaphragm, the mounting bracket and the valve seat jointly define a mounting groove; The sealing ring is installed in the installation groove to block the gap between the side of the diaphragm, the installation bracket and the valve seat.

5. The booster pump head according to claim 4, characterized in that: The depth of the installation groove is a, and the thickness of the sealing ring is h, wherein 0.5a<h<1.25a.

6. The booster pump head according to claim 4 or 5, characterized in that: The pump cover is provided with a pressing portion corresponding to the sealing ring, and the pressing portion at least partially extends into the mounting groove and abuts against the sealing ring.

7. The booster pump head according to claim 6, characterized in that: The length of the pressing portion extending into the installation groove is L, and the groove depth of the installation groove is a, wherein 0.3a<L<0.7a.

8. The booster pump head according to claim 6, characterized in that: A positioning structure is provided between the pressing portion and the sealing ring, and the positioning structure comprises a positioning portion provided on the pressing portion and a matching portion provided on the sealing ring, so that when the pressing portion abuts against the sealing ring, the positioning portion and the matching portion are positioned and matched.

9. The booster pump head according to claim 4, characterized in that: A water outlet channel and a water inlet channel are defined between the mounting bracket, the pump cover and the valve seat, and the water inlet channel and the water outlet channel are arranged at intervals; The diaphragm further comprises a partition provided at the bottom, the partition being used to separate the cavity formed by the diaphragm and the valve seat into a plurality of boosting cavities and a water outlet cavity, and the water outlet cavity is in communication with the plurality of boosting cavities; The water inlet channel is communicated with the plurality of pressure boosting chambers, and the water outlet chamber is communicated with the water outlet channel.

10. The booster pump head according to claim 9, characterized in that: The number of one of the connecting parts and the matching parts is not less than the number of the pressurizing chambers.

11. The booster pump head according to claim 1, characterized in that: The connecting portion and the matching portion are connected via a screw connection.

12. A booster pump, characterized in that: The invention comprises a booster pump head as claimed in any one of claims 1 to 11.

13. A water treatment device, characterized in that: Comprising the booster pump as claimed in claim 12.

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