Booster pump and water purification equipment

Abstract

The utility model discloses a booster pump and water purification equipment, and relates to the technical field of pump bodies, the booster pump comprises a base, a diaphragm assembly, a balance wheel assembly and a pump cover; the diaphragm assembly is arranged on the base and comprises a diaphragm and a piston cover, and the diaphragm and the piston cover define a pump cavity; the balance wheel assembly is arranged in the base and is connected with the diaphragm; the pump cover is connected with the base and provided with a water inlet and a water outlet. A low-pressure cavity and a high-pressure cavity are formed between the pump cover and the diaphragm assembly, the low-pressure cavity is communicated with the water inlet, the high-pressure cavity is communicated with the water outlet, the volume of the low-pressure cavity is V1, the volume of the high-pressure cavity is V2, V1 / V2 is larger than or equal to 1.5 and smaller than or equal to 3, and the balance wheel assembly is used for pumping fluid from the low-pressure cavity to the pump cavity and pumping the fluid from the pump cavity to the high-pressure cavity. According to the booster pump, the air pumping efficiency of the booster pump can be improved.

Description

Technical Field

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

[0002] The existing booster pump can suck air and tap water into it at the same time and pressurize them, and then release them into the water system. The booster pump can pump air and water at the same time through the pressurized pumping action of the booster pump, and the air is dissolved in the water, and then the pressure is reduced and the air is released again, generating a large number of microbubbles for the convenience of users. However, the volume ratio of the low-pressure chamber and the high-pressure chamber of the existing booster pump is too large, that is, the volume of the low-pressure chamber is too large, which makes it difficult for the booster pump to pump air when in use, and the pumping efficiency is low, resulting in a poor user experience. Utility Model Content

[0003] The main purpose of the utility model is to provide a booster pump and a water purification device, aiming to improve the pumping efficiency of the booster pump.

[0004] To achieve the above-mentioned purpose, the utility model proposes a booster pump, which includes a base, a diaphragm assembly, a balance wheel assembly and a pump cover; the diaphragm assembly is arranged on the base, the diaphragm assembly includes a diaphragm and a piston cover, and the diaphragm and the piston cover enclose a pump chamber; the balance wheel assembly is arranged in the base and connected to the diaphragm; the pump cover is connected to the base, and the pump cover is provided with a water inlet and a water outlet; a low-pressure chamber and a high-pressure chamber are formed between the pump cover and the diaphragm assembly, the low-pressure chamber is connected to the water inlet, and the high-pressure chamber is connected to the water outlet, the volume of the low-pressure chamber is V1, and the volume of the high-pressure chamber is V2, satisfying 1.5≤V1 / V2≤3, wherein the balance wheel assembly is used to pump the fluid from the low-pressure chamber to the pump chamber, and from the pump chamber to the high-pressure chamber.

[0005] In one embodiment, the pump cover is provided with a first surrounding edge and a second surrounding edge spaced apart from each other, the second surrounding edge being located on the inner side of the first surrounding edge, the second surrounding edge forming a water outlet cavity connected to the water outlet, and a water inlet cavity connected to the water inlet being formed between the first surrounding edge and the second surrounding edge, wherein the water inlet cavity and the diaphragm assembly enclose the low-pressure cavity, and the water outlet cavity and the diaphragm assembly enclose the high-pressure cavity.

[0006] In one embodiment, the water inlet cavity has a first side wall, a first bottom wall, and a transition wall connecting the first side wall and the first bottom wall, and the transition wall is inclined in a direction from the first surrounding edge to the second surrounding edge.

[0007] In one embodiment, an extending direction of the transition wall is consistent with an extending direction of at least a portion of an outer wall surface of the piston cover.

[0008] In one embodiment, a plurality of protrusions are formed on the side of the piston cover facing the pump cover, the protrusions are provided with a plurality of first water holes connecting the low-pressure chamber and the pump chamber, and a water tank is formed between any two adjacent protrusions.

[0009] In one embodiment, a protrusion is formed on the side of the piston cover facing the pump cover, and the protrusion includes a protrusion side wall and a protrusion top wall connected to each other. The protrusion top wall is provided with a mounting hole for installing the umbrella valve of the diaphragm assembly, and the extension direction of the transition wall is consistent with the extension direction of the protrusion side wall.

[0010] In one embodiment, the distance between the protruding side wall and the transition wall is M1, which satisfies 1 mm ≤ M1 ≤ 2 mm.

[0011] In one embodiment, the first bottom wall is provided with a clearance groove, and the clearance groove is used to avoid the valve stem portion of the umbrella valve of the diaphragm assembly.

[0012] In one embodiment, the distance between the protruding top wall and the first bottom wall is set to M2, and the distance between the groove bottom of the clearance groove and the first bottom wall is set to M3, satisfying M2<M3.

[0013] In one embodiment, the connection between the clearance groove and the first bottom wall has a smooth transition.

[0014] In one embodiment, the pump cover has an outer wall surface away from the diaphragm assembly, and the water outlet cavity has a second bottom wall, and the distance from the second bottom wall to the outer wall surface of the pump cover is smaller than the distance from the first bottom wall to the outer wall surface of the pump cover.

[0015] In one embodiment, an annular boss is provided at the connection between the second surrounding edge and the first bottom wall.

[0016] In one embodiment, a positioning wall is further provided between the transition wall and the first side wall, and the positioning wall has a limiting step surface for abutting against the piston cover.

[0017] In one embodiment, the geometric centers of the first surrounding edge and the second surrounding edge coincide with each other.

[0018] In one embodiment, the distance from the geometric center to the wall surface of the first surrounding edge is set to L1, and the distance from the geometric center to the wall surface of the second surrounding edge is set to L2, satisfying 1.5≤L1 / L2≤2.5.

[0019] In one embodiment, the bottom wall of the high pressure chamber is provided with reinforcing ribs.

[0020] In one embodiment, the pump cover is provided with a mounting groove, and the booster pump further includes a pressure relief assembly arranged in the mounting groove, and a first pressure relief hole and a second pressure relief hole are opened at the bottom of the mounting groove, the first pressure relief hole is connected to the low-pressure chamber, and the second pressure relief hole is connected to the high-pressure chamber, and the first pressure relief hole and the second pressure relief hole can be connected through the pressure relief assembly.

[0021] The utility model also proposes a water purification device, which includes the booster pump. The booster pump includes a base, a diaphragm assembly, a balance wheel assembly and a pump cover; the diaphragm assembly is arranged on the base, the diaphragm assembly includes a diaphragm and a piston cover, and the diaphragm and the piston cover enclose a pump chamber; the balance wheel assembly is arranged in the base and connected to the diaphragm; the pump cover is connected to the base, and the pump cover is provided with a water inlet and a water outlet; a low-pressure chamber and a high-pressure chamber are formed between the pump cover and the diaphragm assembly, the low-pressure chamber is connected to the water inlet, the high-pressure chamber is connected to the water outlet, the volume of the low-pressure chamber is V1, and the volume of the high-pressure chamber is V2, satisfying 1.5≤V1 / V2≤3, wherein the balance wheel assembly is used to pump the fluid from the low-pressure chamber to the pump chamber, and from the pump chamber to the high-pressure chamber.

[0022] The technical solution of the utility model sets the volume of the low-pressure chamber formed between the pump cover and the diaphragm assembly to V1, sets the volume of the high-pressure chamber to V2, and limits the ratio of the volume of the low-pressure chamber to the volume of the high-pressure chamber to within the range of 1.5-3. Within this range, the booster pump has a higher gas pumping capacity and a higher gas pumping efficiency, and can ensure the amount of gas in the water system with the booster pump, so that microbubble water can be continuously generated, thereby improving the preparation effect of microbubble water. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0025] Figure 2 for Figure 1 A cross-sectional view of the booster pump;

[0026] Figure 3 for Figure 2 A partial structural cross-sectional view of the middle booster pump;

[0027] Figure 4 for Figure 3 A partial enlarged view of the middle A;

[0028] Figure 5 for Figure 3 A partial enlarged view of the middle A;

[0029] Figure 6 for Figure 1 Exploded view of part of the structure of the booster pump;

[0030] Figure 7 for Figure 1 Schematic diagram of the structure of the middle pump cover;

[0031] Figure 8 for Figure 7 Cross-sectional view of the pump cover.

[0032] Description of Figure Numbers:

[0033] 10. Booster pump;

[0034] 100, base;

[0035] 200, diaphragm assembly; 210, diaphragm; 220, piston cover; 221, raised portion; 221a, raised side wall; 221b, raised top wall; 221b1, mounting hole; 222, first water hole; 223, second water hole; 230, pump chamber; 240, umbrella valve; 241, valve stem; 242, stopper; 250, water tank;

[0036] 300, balance wheel assembly;

[0037] 400, pump cover; 400a, water inlet; 400b, water outlet; 400c, outer wall; 410, first surrounding edge; 420, second surrounding edge; 421, annular boss; 430, water inlet cavity; 431, first side wall; 432, first bottom wall; 432a, clearance groove; 433, transition wall; 434, positioning wall; 434a, limiting step surface; 440, water outlet cavity; 441, second bottom wall; 442, reinforcing rib; 450, mounting groove; 451, first pressure relief hole; 452, second pressure relief hole;

[0038] 510, low pressure chamber; 520, high pressure chamber;

[0039] 600, pressure relief assembly;

[0040] 700, motor; 710, housing;

[0041] 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

[0042] 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.

[0043] 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.

[0044] 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.

[0045] The existing booster pump can suck air and tap water into it at the same time and pressurize them, and then release them into the water system. The booster pump can pump air and water at the same time through the pressurized pumping action of the booster pump, and the air is dissolved in the water, and then the pressure is reduced and the air is released again, generating a large number of microbubbles for the convenience of users. However, the volume ratio of the low-pressure chamber and the high-pressure chamber of the existing booster pump is too large, that is, the volume of the low-pressure chamber is too large, which makes it difficult for the booster pump to pump air when in use, and the pumping efficiency is low, resulting in a poor user experience.

[0046] The utility model provides a booster pump 10 which can be used in a micro-bubble water system and can improve the pumping efficiency of the booster pump 10 .

[0047] See also Figures 1 to 4In one embodiment of the utility model, the booster pump 10 includes a base 100, a diaphragm assembly 200, a balance wheel assembly 300 and a pump cover 400; the diaphragm assembly 200 is arranged on the base 100, and the diaphragm assembly 200 includes a diaphragm 210 and a piston cover 220, and the diaphragm 210 and the piston cover 220 enclose a pump chamber 230; the balance wheel assembly 300 is arranged in the base 100 and connected to the diaphragm 210; the pump cover 400 is connected to the base 100, and the pump cover 400 is provided with a water inlet 40 0a and the water outlet 400b; a low-pressure chamber 510 and a high-pressure chamber 520 are formed between the pump cover 400 and the diaphragm assembly 200, the low-pressure chamber 510 is connected to the water inlet 400a, and the high-pressure chamber 520 is connected to the water outlet 400b, the volume of the low-pressure chamber 510 is V1, and the volume of the high-pressure chamber 520 is V2, satisfying 1.5≤V1 / V2≤3, wherein the balance wheel assembly 300 is used to pump the fluid from the low-pressure chamber 510 to the pump chamber 230, and from the pump chamber 230 to the high-pressure chamber 520.

[0048] Specifically, the booster pump 10 includes a base 100, a diaphragm assembly 200 is arranged in the base 100, and the diaphragm assembly 200 has a pump chamber 230 for performing a booster pump 10 pumping action on the fluid flowing into the booster pump 10. The pump cover 400 is provided with a water inlet 400a and a water outlet 400b, and the fluid can flow into the booster pump 10 from the water inlet 400a, and flow out from the water outlet 400b after being pressurized. It should be emphasized that the fluid referred to here refers to a mixture of gas and liquid, that is, the gas and liquid flow into the booster pump 10 from the water inlet 400a at the same time, and flow out from the water outlet 400b after being acted on by the booster pump 10, and the water finally flowing out of the water system is microbubble water, which can greatly increase the content of dissolved oxygen in ordinary tap water, and this high dissolved oxygen effect lasts for a long time and the content is stable. The increase of dissolved oxygen helps to self-purify the water body, quickly inhibit and eliminate infectious bacteria, viruses, fungi and parasites, while not harming microorganisms that are beneficial to the human body. Water with high dissolved oxygen can also promote the absorption of important nutrients such as vitamins, minerals, amino acids, proteins, etc., which is beneficial to health. At the same time, microbubble water can clean vegetables and fruits more thoroughly and effectively remove pesticide residues, bacteria and viruses.

[0049] The entire formation process of microbubble water is as follows: First, air or other gas and water flow into the booster pump 10 together, and the booster pump 10 is used to pump the air or other gas and water together to the lower end of the water channel for mixing to form a mixed solution of soda and water. Then, the pressure is released by expansion, so that the gas dissolved in the water suddenly aggregates to form fine microbubbles, which are ejected from the microbubble water outlet to form microbubble water.

[0050] See also Figure 4In this embodiment, a low-pressure chamber 510 and a high-pressure chamber 520 are formed between the pump cover 400 and the diaphragm assembly 200, specifically, a low-pressure chamber 510 and a high-pressure chamber 520 are formed between the pump cover 400 and the piston cover 220, the low-pressure chamber 510 is connected with the water inlet 400a, and the high-pressure chamber 520 is connected with the water outlet 400b, and the balance wheel assembly 300 is used to pump the fluid from the low-pressure chamber 510 to the pump chamber 230, and then pump the fluid from the pump chamber 230 to the high-pressure chamber 520, that is, the fluid flowing in from the water inlet 400a first flows into the low-pressure chamber 510, is pumped to the high-pressure chamber 520 by the action of the pump chamber 230, and then flows out from the water outlet 400b. The volume of the low-pressure chamber 510 is V1, and the volume of the high-pressure chamber 520 is V2, which satisfies 1.5≤V1 / V2≤3. Within this range, the booster pump 10 has a high gas pumping capacity and a high gas pumping efficiency, which can ensure the amount of gas in the water system with the booster pump 10, so that microbubble water can be continuously generated, thereby improving the preparation effect of microbubble water. Compared with the traditional booster pump 10, the volume of the low-pressure chamber 510 of the booster pump 10 of the utility model is smaller, which is convenient for sucking the gas in a small volume into the pump chamber 230. In other words, the low-pressure chamber 510 adopts a small volume design, so that the gap between the piston cover 220 and the pump cover 400 is as small as possible, ensuring that the air sucked into the booster pump 10 is as close to the entrance of the pump chamber 230 as possible, so that the gas is quickly sucked into the booster pump 10 and discharged from the pump chamber 230. When the volume V1 of the low-pressure chamber 510 and the volume V2 of the high-pressure chamber 520 satisfy the range of 1.5≤V1 / V2≤3, within this range, when regular tap water is inflowed, the suction capacity of the booster pump 10 can still reach more than 50mL / min. The ratio of the volume V1 of the low-pressure chamber 510 to the volume V2 of the high-pressure chamber 520 can be 1.5, 1.6, 1.7, 1.8, 1.9, 2.0, 2.1, 2.2, 2.3, 2.4, 2.5, 2.6, 2.7, 2.8, 2.9, 3.0.

[0051] It should be noted that the low-pressure chamber 510 and the high-pressure chamber 520 are formed by the pump cover 400 and the diaphragm assembly 200, rather than the pump cover 400 itself. The volume V1 of the low-pressure chamber 510 refers to the flow volume of gas and water, that is, the maximum volume of gas and water that the low-pressure chamber 510 can accommodate; the volume V2 of the high-pressure chamber 520 refers to the flow volume of gas and water, that is, the maximum volume of gas and water that the high-pressure chamber 520 can accommodate.

[0052] See also Figure 4 and Figure 7In one embodiment, the pump cover 400 is provided with a first surrounding edge 410 and a second surrounding edge 420 spaced apart from each other, the second surrounding edge 420 is located on the inner side of the first surrounding edge 410, the second surrounding edge 420 forms a water outlet cavity 440 connected to the water outlet 400b, and a water inlet cavity 430 connected to the water inlet 400a is formed between the first surrounding edge 410 and the second surrounding edge 420, wherein the water inlet cavity 430 and the diaphragm assembly 200 enclose a low-pressure cavity 510, and the water outlet cavity 440 and the diaphragm assembly 200 enclose a high-pressure cavity 520.

[0053] Specifically, the pump cover 400 is usually an injection molded part, and the first surrounding edge 410 and the second surrounding edge 420 provided on the pump cover 400 are both integrally injection molded with the pump cover 400. The second surrounding edge 420 is located inside the first surrounding edge 410, and a water outlet cavity 440 connected to the water outlet 400b is formed inside the second surrounding edge 420. The shape of the second surrounding edge 420 is preferably annular and located at the center of the pump cover 400 to facilitate water discharge. The shape of the first surrounding edge 410 is adapted to the number of pump cavities 230 of the booster pump 10 or other related structures. The first surrounding edge 410 and the second surrounding edge 420 are arranged at intervals, and a water inlet cavity 430 is formed between the first surrounding edge 410 and the second surrounding edge 420. In addition, the water inlet chamber 430 and the diaphragm assembly 200 enclose a low-pressure chamber 510 , and the water outlet chamber 440 and the diaphragm assembly 200 enclose a high-pressure chamber 520 , that is, the low-pressure chamber 510 and the high-pressure chamber 520 are both formed by the pump cover 400 and the diaphragm assembly 200 .

[0054] See also Figure 4 and Figure 8 In one embodiment, the water inlet cavity 430 has a first side wall 431, a first bottom wall 432, and a transition wall 433 connecting the first side wall 431 and the first bottom wall 432, and the transition wall 433 is inclined in the direction from the first surrounding edge 410 to the second surrounding edge 420. Specifically, the water inlet cavity 430 of the pump cover 400 has a first side wall 431, a first bottom wall 432, and a transition wall 433 connecting the first side wall 431 and the first bottom wall 432. In order to further reduce the volume of the low-pressure cavity 510 and ensure that the diaphragm assembly 200 is close enough to the cavity wall of the water inlet cavity 430, the gap is as small as possible, and the air sucked into the booster pump 10 is as close as possible to the inlet of the pump cavity 230, thereby improving the pumping efficiency and suction capacity of the booster pump 10, the transition wall 433 is inclined in the direction from the first surrounding edge 410 to the second surrounding edge 420.

[0055] Furthermore, the extension direction of the transition wall 433 is consistent with the extension direction of at least a portion of the outer wall surface 400c of the piston cover 220. In this way, the inlet of the pump chamber 230 (i.e., the first water hole 222) can be closer to the cavity wall of the low-pressure chamber 510, so that the gas can be sucked into the pump chamber 230 with a larger volume, thereby ensuring the suction capacity and suction efficiency of the booster pump 10.

[0056] See also Figure 6 In one embodiment, a plurality of protrusions 221 are formed on the side of the piston cover 220 facing the pump cover 400, and the protrusions 221 are provided with a plurality of first water holes 222 connecting the low-pressure chamber 510 and the pump chamber 230, and a water tank 250 is formed between any two adjacent protrusions 221.

[0057] Specifically, the first water hole 222 is provided on the protrusion 221. The setting of the protrusion 221 can make the entrance of the pump chamber 230 (i.e., the first water hole 222) closer to the cavity wall of the low-pressure chamber 510, so that the gas can be sucked into the pump chamber 230 with a larger volume, thereby ensuring the suction capacity and suction efficiency of the booster pump 10. In addition, a water tank 250 is formed between any two adjacent protrusions 221. The size and depth of the water tank 250 play a role in adjusting the volume V1 of the entire low-pressure chamber 510, thereby ensuring that the volume ratio of the low-pressure chamber 510 to the high-pressure chamber 520 can be maintained within 1.5-3, thereby improving the suction capacity and pumping efficiency of the booster pump 10.

[0058] See also Figure 4 and Figure 6 In another embodiment, a protrusion 221 is formed on the side of the piston cover 220 facing the pump cover 400, and the protrusion 221 includes a protrusion side wall 221a and a protrusion top wall 221b connected to each other. The protrusion top wall 221b is provided with a mounting hole 221b1 for mounting the umbrella valve 240 of the diaphragm assembly 200, and the extension direction of the transition wall 433 is consistent with the extension direction of the protrusion side wall 221a.

[0059] Specifically, the setting of the protrusion 221 can make the entrance of the pump chamber 230 (i.e., the first water hole 222) closer to the wall of the low-pressure chamber 510, so that the gas can be sucked into the pump chamber 230 with a larger volume, ensuring the suction capacity and suction efficiency of the booster pump 10. The protrusion 221 includes a protrusion side wall 221a and a protrusion top wall 221b connected to each other. The protrusion top wall 221b is provided with a mounting hole 221b1 for installing the umbrella valve 240 of the diaphragm assembly 200. The protrusion side wall 221a is provided with a plurality of first water holes 222. The umbrella valve 240 is used to open or close the plurality of first water holes 222, so as to achieve the suction of gas and liquid in the low-pressure chamber 510 into the pump chamber 230, and pump it into the high-pressure chamber 520 to flow out from the water outlet 400b. The extension direction of the transition wall 433 is consistent with the extension direction of the raised side wall 221a, which can ensure that the gas and liquid in the low-pressure chamber 510 are more easily drawn into the pump chamber 230 through the action of the balance wheel assembly 300, thereby ensuring the suction capacity of the booster pump 10.

[0060] See also Figure 5 In one embodiment, the distance between the raised side wall 221a and the transition wall 433 is M1, which satisfies 1mm≤M1≤2mm. Specifically, the distance between the raised side wall 221a and the transition wall 433 can be limited to between 1mm and 2mm, so that the distance between the first water hole 222 and the cavity wall of the low-pressure cavity 510 is close enough to ensure the suction capacity and pumping efficiency of the booster pump 10. The specific value of M1 can be 1mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm, 1.6mm, 1.7mm, 1.8mm, 1.9mm, 2.0mm.

[0061] See also Figure 4 or Figure 5In one embodiment, the first bottom wall 432 is provided with a clearance groove 432a, and the clearance groove 432a is used to avoid the valve stem portion 241 of the umbrella valve 240 of the diaphragm assembly 200. Specifically, the umbrella valve 240 of the diaphragm assembly 200 is installed in the mounting hole 221b1, and the umbrella valve 240 includes a valve stem portion 241 and a stopper portion 242 connected to each other. The valve stem portion 241 passes through the mounting hole 221b1 on the piston cover 220, and the stopper portion 242 is provided in a sheet shape and is located on the side of the piston cover 220 away from the low-pressure chamber 510. The stopper portion 242 is used to open or close the plurality of first water holes 222, so as to realize the pumping of water and gas in the low-pressure chamber 510 into the pump chamber 230. Since the valve stem portion 241 is at least partially in contact with the surface of the piston cover 220 to ensure the stability of the installation of the umbrella valve 240, that is, the valve stem at least partially protrudes from the surface of the piston cover 220, in order to further reduce the distance between the first bottom wall 432 and the diaphragm assembly 200, a clearance groove 432a is provided on the first bottom wall 432 to avoid the valve stem portion 241. At the same time, the distance between the piston cover 220 and the cavity wall of the low-pressure chamber 510 can be further shortened to ensure the pumping efficiency of the booster pump 10.

[0062] See also Figure 5 In one embodiment, the distance between the raised top wall 221b and the first bottom wall 432 is set to M2, and the distance between the bottom of the give way groove 432a and the first bottom wall 432 is set to M3, satisfying M2<M3. Among them, M3 can be understood as the groove depth of the give way groove 432a, M3>M2, that is, the groove depth of the give way groove 432a is greater than the distance between the raised top wall 221b and the first bottom wall 432. In this way, setting the groove depth of the give way groove 432a deeper can further shorten the distance between the piston cover 220 and the first bottom wall 432, ensuring that the volume of the low-pressure chamber 510 is small enough, and the distance between the two is close, which is conducive to improving the efficiency and capacity of pumping gas.

[0063] Please continue reading Figure 5 In one embodiment, the connection between the paving groove 432a and the first bottom wall 432 is smoothly transitioned. This arrangement can prevent the connection between the paving groove 432a and the first bottom wall 432 from damaging the movable valve stem 241 when the umbrella valve 240 moves.

[0064] See also Figure 8In one embodiment, the pump cover 400 has an outer wall surface 400c away from the diaphragm assembly 200, and the water outlet cavity 440 has a second bottom wall 441. The distance from the second bottom wall 441 to the outer wall surface 400c of the pump cover 400 is smaller than the distance from the first bottom wall 432 to the outer wall surface 400c of the pump cover 400. Specifically, the second bottom wall 441 is the bottom wall of the water outlet cavity 440, which can also be understood as the bottom wall of the high-pressure cavity 520. Since the high-pressure cavity 520 is located in the middle of the pump cover 400, in order to ensure that the volume V2 of the high-pressure cavity 520 is not too small and to ensure the overall pumping efficiency of the booster pump 10, the cavity bottom of the high-pressure cavity 520 is deeper than the cavity bottom of the low-pressure cavity 510.

[0065] Please continue reading Figure 8 In one embodiment, an annular boss 421 is provided at the connection between the second surrounding edge 420 and the first bottom wall 432. Specifically, an annular boss 421 is further provided at the connection between the second surrounding edge 420 and the first bottom wall 432, which can enhance the structural strength of the connection between the second surrounding edge 420 and the first bottom wall 432 on the one hand, and facilitate demoulding of the pump cover 400 when producing the pump cover 400 on the other hand.

[0066] See also Figure 4 and Figure 7 In one embodiment, a positioning wall 434 is further provided between the transition wall 433 and the first side wall 431, and the positioning wall 434 has a limiting step surface 434a for abutting against the piston cover 220. Specifically, when the pump cover 400 and the diaphragm assembly 200 are assembled, the limiting step surface 434a presses against the piston cover 220 to press the diaphragm assembly 200 against the base 100, and the sealing between the piston cover 220 and the diaphragm 210 can also be ensured to prevent water leakage.

[0067] See also Figure 7In one embodiment, the geometric centers of the first enclosure 410 and the second enclosure 420 coincide. Further, the distance from the geometric center to the wall of the first enclosure 410 is set to L1, and the distance from the geometric center to the wall of the second enclosure 420 is set to L2, satisfying 1.5≤L1 / L2≤2.5. Specifically, L1 refers to the distance from the geometric center to the inner wall of the first enclosure 410, and L2 refers to the distance from the geometric center to the inner wall of the second enclosure 420; if the shape of the first enclosure 410 or the second enclosure 420 is irregular, L1 is the average value of the maximum and minimum values ​​from the geometric center to the inner wall of the first enclosure 410, and similarly, L2 is the average value of the maximum and minimum values ​​from the geometric center to the inner wall of the second enclosure 420. In this way, by limiting the distance from the geometric center to the inner wall surface of the first surrounding edge 410 and the second surrounding edge 420, the volume of the water inlet chamber 430 and the water outlet chamber 440 can be limited, so that the ratio between the volume V1 of the low-pressure chamber 510 and the volume V2 of the high-pressure chamber 520 is within the range of 1.5-3, thereby improving the pumping capacity and pumping efficiency of the booster pump 10.

[0068] Please continue reading Figure 7 In one embodiment, the bottom wall of the high pressure chamber 520 is provided with a reinforcing rib 442. Specifically, when the booster pump 10 is in use, the high pressure chamber 520 is always in a high pressure state. To prevent the high pressure fluid from deforming the pump cover 400, a reinforcing rib 442 is further provided on the bottom wall of the high pressure chamber 520 to improve the structural strength of the bottom of the high pressure chamber 520.

[0069] See also Figure 4 and Figure 7 In one embodiment, the pump cover 400 is provided with a mounting groove 450, and the booster pump 10 also includes a pressure relief assembly 600 arranged in the mounting groove 450. The bottom of the mounting groove 450 is provided with a first pressure relief hole 451 and a second pressure relief hole 452. The first pressure relief hole 451 is connected to the low-pressure chamber 510, and the second pressure relief hole 452 is connected to the high-pressure chamber 520. The first pressure relief hole 451 and the second pressure relief hole 452 can be connected through the pressure relief assembly 600.

[0070] See also Figure 1 and Figure 2 In one embodiment, the booster pump 10 further includes a motor 700, a housing 710 of the motor 700 is connected to the base 100, and a motor 700 shaft of the motor 700 is connected to the balance wheel assembly 300, for driving the balance wheel assembly 300 to move and drive the diaphragm assembly 200 to pump the fluid from the low-pressure chamber 510 to the pump chamber 230, and then pump the fluid from the pump chamber 230 to the high-pressure chamber 520.

[0071] The technical solution of the present invention is to set the volume of the low-pressure chamber 510 formed between the pump cover 400 and the diaphragm assembly 200 to V1, set the volume of the high-pressure chamber 520 to V2, and limit the ratio of the volume of the low-pressure chamber 510 to the volume of the high-pressure chamber 520 to within the range of 1.5-3. Within this range, the booster pump 10 has a higher air pumping capacity and a higher air pumping efficiency, which can ensure the amount of gas in the water system having the booster pump 10, so that microbubble water can be continuously generated, thereby improving the preparation effect of microbubble water.

[0072] The utility model also proposes a water purification device, which includes the aforementioned booster pump 10. The specific structure of the booster pump 10 refers to the above-mentioned embodiment. Since the water purification device adopts all the technical solutions of all the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here one by one.

[0073] 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 booster pump, characterized in that: include: Base; A diaphragm assembly is arranged on the base, the diaphragm assembly comprises a diaphragm and a piston cover, and the diaphragm and the piston cover enclose a pump chamber; A balance wheel assembly is disposed in the base and connected to the diaphragm; as well as A pump cover is connected to the base, and the pump cover is provided with a water inlet and a water outlet; a low-pressure chamber and a high-pressure chamber are formed between the pump cover and the diaphragm assembly, the low-pressure chamber is connected to the water inlet, and the high-pressure chamber is connected to the water outlet, the volume of the low-pressure chamber is V1, and the volume of the high-pressure chamber is V2, satisfying 1.5≤V1 / V2≤3, wherein the balance wheel assembly is used to pump the fluid from the low-pressure chamber to the pump chamber, and from the pump chamber to the high-pressure chamber.

2. The booster pump according to claim 1, characterized in that: The pump cover is provided with a first surrounding edge and a second surrounding edge spaced apart from each other, wherein the second surrounding edge is located on the inner side of the first surrounding edge, and the second surrounding edge forms a water outlet cavity connected with the water outlet, and a water inlet cavity connected with the water inlet is formed between the first surrounding edge and the second surrounding edge, wherein the water inlet cavity and the diaphragm assembly enclose the low-pressure cavity, and the water outlet cavity and the diaphragm assembly enclose the high-pressure cavity.

3. The booster pump according to claim 2, characterized in that: The water inlet cavity comprises a first side wall, a first bottom wall, and a transition wall connecting the first side wall and the first bottom wall. The transition wall is inclined in a direction from the first surrounding edge to the second surrounding edge.

4. The booster pump according to claim 3, characterized in that: The extending direction of the transition wall is consistent with the extending direction of at least a portion of the outer wall surface of the piston cover.

5. The booster pump according to claim 4, characterized in that: A plurality of protrusions are formed on one side of the piston cover facing the pump cover. The protrusions are provided with a plurality of first water holes connecting the low-pressure chamber and the pump chamber, and a water storage tank is formed between any two adjacent protrusions.

6. The booster pump according to claim 4, characterized in that: A protrusion is formed on the side of the piston cover facing the pump cover, and the protrusion includes a protrusion side wall and a protrusion top wall connected to each other. The protrusion top wall is provided with a mounting hole for installing the umbrella valve of the diaphragm assembly, and the extension direction of the transition wall is consistent with the extension direction of the protrusion side wall.

7. The booster pump according to claim 6, characterized in that: The distance between the protruding side wall and the transition wall is M1, which satisfies 1mm≤M1≤2mm.

8. The booster pump according to claim 6, characterized in that: The first bottom wall is provided with a clearance groove, and the clearance groove is used to avoid the valve stem portion of the umbrella valve of the diaphragm assembly.

9. The booster pump according to claim 8, characterized in that: The distance between the protruding top wall and the first bottom wall is set to M2, and the distance between the groove bottom of the give way groove and the first bottom wall is set to M3, satisfying M2<M3.

10. The booster pump according to claim 9, characterized in that: The connection between the clearance groove and the first bottom wall is smoothly transitioned.

11. The booster pump according to claim 3, characterized in that: The pump cover has an outer wall surface away from the diaphragm assembly, and the water outlet cavity has a second bottom wall. The distance from the second bottom wall to the outer wall surface of the pump cover is smaller than the distance from the first bottom wall to the outer wall surface of the pump cover.

12. The booster pump according to claim 3, characterized in that: An annular boss is provided at the connection between the second surrounding edge and the first bottom wall.

13. The booster pump according to claim 4, characterized in that: A positioning wall is further provided between the transition wall and the first side wall, and the positioning wall has a limiting step surface for abutting against the piston cover.

14. The booster pump according to any one of claims 2 to 13, characterized in that: The geometric centers of the first surrounding edge and the second surrounding edge coincide with each other.

15. The booster pump according to claim 14, characterized in that: The distance from the geometric center to the wall of the first surrounding edge is set to L1, and the distance from the geometric center to the wall of the second surrounding edge is set to L2, satisfying 1.5≤L1 / L2≤2.

5.

16. The booster pump according to any one of claims 1 to 13, characterized in that: The bottom wall of the high pressure chamber is provided with reinforcing ribs.

17. The booster pump according to any one of claims 1 to 13, characterized in that: The pump cover is provided with a mounting groove, and the booster pump also includes a pressure relief assembly arranged in the mounting groove, and a first pressure relief hole and a second pressure relief hole are opened at the bottom of the mounting groove, the first pressure relief hole is connected to the low-pressure chamber, and the second pressure relief hole is connected to the high-pressure chamber, and the first pressure relief hole and the second pressure relief hole can be connected through the pressure relief assembly.

18. A water purification device, characterized in that: Comprising a booster pump as claimed in any one of claims 1 to 17.

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