Noise-reduction six-cavity RO (Reverse Osmosis) pump

Abstract

The utility model relates to a noise reduction six-cavity RO pump which comprises a pump head shell, a compression assembly and a driving assembly for driving the compression assembly to work. The compression assembly comprises a diaphragm piece, a compression support, a water inlet valve piece installed on the compression support and a water drainage valve piece installed on the compression support. The top of the pump head shell is provided with a partition plate in sealing fit with the top of the compression support. A mounting groove corresponding to the partition plate is formed in the top of the pump head shell, and a noise reduction assembly is arranged at the mounting groove; the noise reduction assembly comprises a noise reduction top cover used for covering a groove opening of the mounting groove and noise reduction filler installed on the bottom face of the noise reduction top cover and filling the mounting groove, and a supporting plate inserted into the noise reduction filler is arranged at the bottom of the noise reduction top cover.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of RO pumps, in particular to a noise-reducing six-chamber RO pump. BACKGROUND

[0002] The RO pump is also known as a reverse osmosis booster pump, and is widely used in the field of water purifiers due to small space occupation, high integration and good durability, and is one of the core accessories of the current household water purifier.

[0003] A pump head of an RO pump is disclosed in Chinese Patent No. CN113446204B, which comprises a pump head shell, a piston support, a diaphragm, a piston, a first partition plate, a water suction valve plate, a water discharge valve plate and a second partition plate. The water discharge valve plate and the water suction valve plate are both mounted on the first partition plate, and a driving chamber, a water outlet chamber and a piston chamber are formed at the pump head shell. When the pump head of the RO pump operates, i.e. under the driving of the piston movement, liquid will enter the piston chamber through the driving chamber and be injected into the water outlet chamber through the piston chamber. When the liquid is injected into the water outlet chamber, the liquid will directly impact on the second partition plate, causing noise caused by impact.

[0004] According to the related technology in the above, the inventor believes that an RO pump with less noise during operation needs to be provided. UTILITY MODEL CONTENT

[0005] In order to improve the noise reduction effect of the RO pump during operation, the application provides a noise-reducing six-chamber RO pump.

[0006] The noise-reducing six-chamber RO pump provided by the application adopts the following technical scheme:

[0007] A noise-reducing six-chamber RO pump comprises a pump head shell, a compression assembly and a driving assembly for driving the compression assembly to work, the pump head shell comprises a water inlet and a water outlet; the compression assembly comprises a diaphragm, a compression support, a water inlet valve plate mounted on the compression support and a water discharge valve plate mounted on the compression support; the top of the pump head shell has a partition plate in sealing cooperation with the top of the compression support, the partition plate divides the upper chamber of the pump head shell into a water inlet chamber communicating with the water inlet and a water outlet chamber communicating with the water outlet; the top of the pump head shell is provided with a mounting groove corresponding to the partition plate, and a noise reduction assembly is arranged at the mounting groove; the noise reduction assembly comprises a noise reduction top cover for covering the slot of the mounting groove and a noise reduction filler mounted on the bottom surface of the noise reduction top cover and filling the mounting groove, and the bottom of the noise reduction top cover is provided with a support plate inserted into the noise reduction filler.

[0008] By adopting the technical scheme, when the RO pump is running, liquid enters the driving chamber through the water inlet under the action of the driving assembly, is injected into the water outlet chamber under the action of the compression assembly, and finally flows out through the water outlet communicated with the water outlet chamber, so that the liquid is delivered. By arranging the noise reduction assembly inside the partition plate of the pump head shell, the noise reduction assembly can block the noise generated by the liquid impacting the water outlet chamber, so that the noise reduction effect is achieved.

[0009] Optionally, the mounting groove comprises a first mounting groove matched with the noise reduction top cover and a second mounting groove matched with the noise reduction filler; and the noise reduction top cover is locked in the first mounting groove by a screw.

[0010] By adopting the technical scheme, the mounting mode of the noise reduction assembly at the mounting groove is disclosed. By locking the noise reduction top cover in the first mounting groove by a screw, the detachable mounting of the noise reduction top cover and the pump head shell is achieved.

[0011] Optionally, the mounting groove comprises a first mounting groove matched with the noise reduction top cover and a second mounting groove matched with the support plate; a side wall of the noise reduction top cover is provided with a plunger hole and is provided with a ball head spring plunger in the plunger hole, and a side wall of the first mounting groove is provided with a clamping hole for arranging a plunger ball of the ball head spring plunger.

[0012] By adopting the technical scheme, another mounting mode of the noise reduction assembly at the mounting groove is disclosed. By arranging the ball head mounting plunger on the side wall of the noise reduction top cover and arranging the clamping hole for arranging the plunger ball on the side wall of the first mounting groove, the detachable mounting of the noise reduction top cover and the pump head shell is achieved.

[0013] Optionally, both side walls of the support plate are provided with a convex rib structure matched with the noise reduction filler.

[0014] By adopting the technical scheme, the convex rib structure is arranged on the inner wall of the support plate, the friction force of the contact surface between the noise reduction filler and the support plate is increased, and the installation stability of the noise reduction filler is improved.

[0015] Optionally, the partition plate comprises a first ring portion and a second ring portion in sequence in a direction away from the top wall of the pump head shell, an inner diameter of the first ring portion is smaller than an inner diameter of the second ring portion, a stepped surface is formed between the first ring portion and the second ring portion, and the stepped surface is opposite to the mounting groove.

[0016] By adopting the technical scheme, the first ring part and the second ring part are arranged inside the partition plate, and the stepped surface is formed between the first ring part and the second ring part, so that when the liquid is injected into the water outlet chamber, the liquid directly impacts on the inner wall of the second ring part and the stepped surface, the impact area is far away from the top of the pump head shell, the noise generated by the impact can be better absorbed by the noise reduction assembly, and the noise reduction effect is achieved.

[0017] Optionally, the inner side of the partition plate is further provided with a noise reduction buffer, and the noise reduction buffer comprises a first buffer piece attached to the stepped surface and a second buffer piece attached to the inner wall of the second ring part.

[0018] By adopting the technical scheme, the noise reduction buffer is arranged on the inner side of the partition plate, so that when the liquid is injected into the water outlet chamber, the elastic surface of the noise reduction buffer can effectively absorb the impact energy, and the noise reduction effect is achieved.

[0019] Optionally, the top surface of the compression support is provided with an annular sealing groove, and a sealing ring is arranged in the sealing groove; and the sealing ring and the noise reduction buffer are integrally formed.

[0020] By adopting the technical scheme, an integrally formed structure of the sealing ring and the noise reduction buffer is disclosed. The sealing ring and the noise reduction buffer are integrally formed and installed, which helps to improve the sealing performance of the chamber.

[0021] Optionally, six driving chambers are formed between the compression support and the diaphragm piece.

[0022] By adopting the technical scheme, six driving chambers are arranged between the compression support and the diaphragm piece, which helps to improve the water delivery stability of the RO pump and realizes the continuous water delivery of the RO pump.

[0023] In summary, the present application has at least one of the following beneficial technical effects:

[0024] 1. By arranging the noise reduction assembly inside the partition plate of the pump head shell, the noise generated by the liquid impacting into the water outlet chamber is reduced, and the noise reduction effect is achieved.

[0025] 2. By arranging the noise reduction buffer on the stepped surface of the inner wall of the partition plate and the bottom of the water outlet chamber, when the liquid is injected into the water outlet chamber, the noise reduction buffer can effectively absorb the impact energy, and the noise reduction effect is further achieved.

[0026] 3. By arranging six driving chambers, the water delivery stability of the RO pump is improved, and the continuous water delivery of the RO pump is realized. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1is a schematic view of the cross section of the noise reduction six-cavity RO pump in embodiment 1 along the conveying direction.

[0028] Figure 2 is a schematic view of the cross section of the noise reduction six-cavity RO pump in embodiment 1 perpendicular to the conveying direction.

[0029] Figure 3 is a schematic view of the cross section of the pump head shell in embodiment 1.

[0030] Figure 4 is Figure 3 is a local enlarged view of A in FIG.

[0031] Figure 5 is Figure 2 is a schematic view of the cooperation of the noise reduction top cover and the mounting groove at B in FIG.

[0032] Figure 6 is a schematic view of the cooperation of the noise reduction top cover and the mounting groove in embodiment 2.

[0033] BRIEF DESCRIPTION OF THE DRAWINGS: 1, pump head shell; 11, upper shell; 111, water inlet; 112, water outlet; 113, mounting groove; 1131, first mounting groove; 11311, mounting screw hole; 11312, clamping hole; 1132, second mounting groove; 114, partition plate; 1141, first ring part; 1142, second ring part; 1143, stepped surface; 12, intermediate shell; 13, lower shell; 14, upper chamber; 141, water inlet chamber; 142, water outlet chamber; 2, compression assembly; 21, diaphragm; 22, compression support; 221, water inlet hole; 222, water outlet hole; 23, water inlet valve piece; 24, water outlet valve piece; 25, sealing groove; 251, sealing ring; 26, driving chamber; 3, driving assembly; 31, motor shell; 32, driving motor; 33, eccentric wheel; 34, rotating bearing; 35, piston support; 351, piston assembly; 4, noise reduction assembly; 41, noise reduction top cover; 411, mounting through hole; 42, support plate; 421, convex rib structure; 43, noise reduction filler; 5, noise reduction buffer; 51, first buffer piece; 52, second buffer piece; 6, bolt; 7, ball head spring plunger; 71, plunger shell; 72, plunger spring; 73, plunger ball. DETAILED DESCRIPTION

[0034] The following will be described in detail in combination with the accompanying drawings. Figures 1-6 The present application is further described in detail.

[0035] Embodiment 1:

[0036] The embodiment of the present application discloses a noise reduction six-cavity RO pump. Referring to Figure 1 and Figure 2, the noise reduction six-chamber RO pump comprises a pump head shell 1, a compression assembly 2 and a driving assembly 3 for driving the compression assembly 2 to work. The pump head shell 1 comprises an upper shell 11, an intermediate shell 12 and a lower shell 13. An upper chamber 14 is formed between the upper shell 11 and the intermediate shell 12. The upper shell 11 and the lower shell 13 are connected and fixed by bolts 6, so as to clamp and fix the intermediate shell 12 by the upper shell 11 and the lower shell 13. The upper shell 11 comprises a water inlet 111 and a water outlet 112.

[0037] With reference to Figure 3 and Figure 4 The compression assembly 2 comprises a diaphragm 21 arranged at the top of the intermediate shell 12, a compression bracket 22 installed at the top of the diaphragm 21, a water inlet valve 23 installed on the compression bracket 22 and a water outlet valve 24 installed on the compression bracket 22. The upper shell 11 has a partition plate 114 sealingly matched with the top of the compression bracket 22. The partition plate 114 divides the upper chamber 14 of the pump head shell 1 into a water inlet chamber 141 communicating with the water inlet 111 and a water outlet chamber 142 communicating with the water outlet 112. In order to realize the sealed installation between the compression assembly 2 and the upper shell 11, the compression bracket 22 is provided with an annular sealing groove 25 on the side facing the partition plate 114, and a sealing ring 251 is arranged in the sealing groove 25. The compression bracket 22 and the diaphragm 21 form a driving chamber 26. In order to improve the flow stability of the RO pump, the compression bracket 22 is provided with a plurality of water inlet holes 221 on the surface connecting the water inlet chamber 141 and the driving chamber 26, and a water inlet valve 23 for limiting the one-way flow of liquid is installed at the water inlet holes 221; a plurality of water outlet holes 222 are formed on the surface connecting the driving chamber 26 and the water outlet chamber 142, and a water outlet valve 24 for limiting the one-way flow of liquid is installed at the water outlet holes 222. When the compression assembly 2 works, water flow can enter the driving chamber 26 from the water inlet chamber 141 and be pumped into the water outlet chamber 142 by the action of the driving assembly 3. In this embodiment, in order to further improve the flow stability of the RO pump, six driving chambers 26 are formed between the compression bracket 22 and the diaphragm 21.

[0038] With reference to Figure 1The driving assembly 3 comprises a motor housing 31 fixed on the bottom of the lower housing 13, a driving motor 32 installed in the motor housing 31, an eccentric wheel 33 installed on the output shaft of the driving motor 32, a rotating bearing 34 sleeved outside the eccentric wheel 33, and a piston support 35 installed outside the rotating bearing 34. The top of the piston support 35 is provided with a piston assembly 351 corresponding to the driving chamber 26, for fixing the piston support 35 and the diaphragm 21. When the driving motor 32 operates, the eccentric wheel 33 rotates along the axis of the driving motor 32, which drives the rotating bearing 34 and the piston support 35 to rotate, thereby driving the compression assembly 2 to work to realize the one-way delivery of the liquid in each chamber.

[0039] With reference to Figure 4 The top of the upper housing 11 is also provided with a mounting groove 113 corresponding to the partition plate 114, and a noise reduction assembly 4 is arranged at the mounting groove 113. The noise reduction assembly 4 comprises a noise reduction top cover 41 for covering the slot of the mounting groove 113, a support plate 42 arranged at the bottom of the noise reduction top cover 41, and noise reduction filler 43 filling the mounting groove 113. The support plate 42 is inserted into the noise reduction filler 43 and is provided with a convex edge structure 421 on both side walls for cooperating with the noise reduction filler 43, so that the contact surface between the noise reduction filler 43 and the support plate 42 can generate a larger friction force, which helps to improve the installation stability of the noise reduction filler 43.

[0040] With reference to Figure 4 And Figure 5 The mounting groove 113 comprises a first mounting groove 1131 cooperating with the noise reduction top cover 41 and a second mounting groove 1132 cooperating with the support plate 42. The top of the noise reduction top cover 41 is provided with a mounting through hole 411, and the first mounting groove 1131 is provided with a mounting screw hole 11311 cooperating with the mounting through hole 411. The noise reduction top cover 41 is locked in the first mounting groove 1131 by screws, realizing the detachable installation of the noise reduction top cover 41 and the pump head housing 1. The support plate 42 and the second mounting groove 1132 cooperating therewith are both C-arc-shaped, and are provided with openings on the side facing the water outlet 112.

[0041] With reference to Figure 4 The partition plate 114 comprises a first ring portion 1141 and a second ring portion 1142 in sequence away from the top wall of the pump head housing 1, and the inner diameter of the first ring portion 1141 is smaller than that of the second ring portion 1142. A stepped surface 1143 opposite to the mounting groove 113 is formed between the first ring portion 1141 and the second ring portion 1142. The inner side of the partition plate 114 is also provided with a noise reduction buffer 5 integrally formed with the sealing ring 251, which comprises a first buffer piece 51 abutting against the stepped surface 1143 and a second buffer piece 52 abutting against the inner wall of the second ring portion 1142.

[0042] The implementation principle of the noise reduction six-cavity RO pump in the embodiment of the application is as follows: when the noise reduction six-cavity RO pump is running, under the working of the driving assembly 3, liquid enters the water inlet chamber 141 through the water inlet 111 and enters the driving chamber 26 through the water inlet hole 221 of the water inlet valve piece 23, and under the action of the compression assembly 2, the water flow is injected into the water outlet chamber 142 through the water outlet hole 222 at the bottom of the water outlet valve piece 24. The water flow will impact on the noise reduction buffer 5 on the surfaces of the first ring part 1141, the second ring part 1142 and the stepped surface 1143. Due to the arrangement of the noise reduction assembly and the noise reduction buffer, the noise transmitted to the outside of the RO pump is small. Finally, the liquid is discharged through the water outlet 112 connected with the water outlet chamber 142, so that the liquid is delivered.

[0043] Embodiment 2

[0044] In the embodiment, the cooperation structure of the noise reduction top cover and the mounting groove is different from that of the noise reduction six-cavity RO pump in Embodiment 1, and the remaining structures are consistent with those of the noise reduction six-cavity RO pump in Embodiment 1.

[0045] Reference Figure 6 The two side walls of the noise reduction top cover 41 are provided with plunger holes, and the plunger holes are provided with ball head spring plungers 7. The side wall of the first mounting groove 1131 is provided with two clamping holes 11312 for arranging plunger balls 73 of the ball head spring plungers 7. The ball head spring plunger 7 comprises a plunger shell 71, a plunger spring 72 and a plunger ball 73. One end of the plunger spring 72 abuts against the inner cavity bottom end of the plunger shell 71, and the other end abuts against the plunger ball 73, so that the plunger ball 73 always has a tendency to abut against the opening of the plunger shell 71. When the noise reduction top cover 41 is inserted into the first mounting groove 1131, the two plunger balls 73 simultaneously abut against the two clamping holes 11312 of the side wall of the first mounting groove 1131, so as to realize the detachable mounting of the noise reduction top cover 41 and the pump head shell 1.

[0046] The above are preferred embodiments of the application, and do not limit the protection scope of the application. Therefore, equivalent changes made on the basis of the structure, shape and principle of the application should be covered within the protection scope of the application.

Claims

1. A noise-reduced six-cavity RO pump, characterized in that, The pump head shell (1) comprises a water inlet (111) and a water outlet (112); the compression assembly (2) comprises a diaphragm (21), a compression support (22), a water inlet valve sheet (23) installed on the compression support (22), and a water outlet valve sheet (24) installed on the compression support (22); the top of the pump head shell (1) is provided with a partition plate (114) in sealing cooperation with the top of the compression support (22), the partition plate (114) divides the upper chamber (14) of the pump head shell (1) into a water inlet chamber (141) in communication with the water inlet (111) and a water outlet chamber (142) in communication with the water outlet (112); the top of the pump head shell (1) is provided with a mounting groove (113) corresponding to the partition plate (114), and a noise reduction assembly (4) is arranged at the mounting groove (113); the noise reduction assembly (4) comprises a noise reduction top cover (41) for covering the slot of the mounting groove (113) and a noise reduction filler (43) installed on the bottom surface of the noise reduction top cover (41) and filling the mounting groove (113), and the bottom of the noise reduction top cover (41) is provided with a support plate (42) inserted into the noise reduction filler (43).

2. A noise reduced six chamber RO pump as claimed in claim 1, wherein, The mounting groove (113) comprises a first mounting groove (1131) cooperating with the noise reduction top cover (41) and a second mounting groove (1132) cooperating with the noise reduction filler (43); and the noise reduction top cover (41) is locked in the first mounting groove (1131) by screws.

3. A noise reduced six chamber RO pump as claimed in claim 1, wherein, The mounting groove (113) comprises a first mounting groove (1131) cooperating with the noise reduction top cover (41) and a second mounting groove (1132) cooperating with the support plate (42); the sidewall of the noise reduction top cover (41) is provided with a plunger hole and a ball head spring plunger (7) is arranged in the plunger hole; and the sidewall of the first mounting groove (1131) is provided with a clamping hole (11312) for arranging a plunger ball (73) of the ball head spring plunger (7).

4. A noise reduced six chamber RO pump as claimed in claim 1, wherein, The two sidewalls of the support plate (42) are provided with convex rib structures (421) for cooperating with the noise reduction filler (43).

5. A noise-reduced six-cavity RO pump in accordance with claim 1, wherein, The partition plate (114) comprises a first ring portion (1141) and a second ring portion (1142) in sequence away from the top wall of the pump head shell (1); the inner diameter of the first ring portion (1141) is smaller than that of the second ring portion (1142), and a stepped surface (1143) is formed between the first ring portion (1141) and the second ring portion (1142), and the stepped surface (1143) is opposite to the mounting groove (113).

6. A noise-reduced six-cavity RO pump according to claim 5, characterized in that The inner side of the partition plate (114) is further provided with a noise reduction buffer (5), and the noise reduction buffer (5) comprises a first buffer sheet (51) abutting the stepped surface (1143) and a second buffer sheet (52) abutting the inner wall of the second ring portion (1142).

7. A noise-reduced six-cavity RO pump according to claim 6, characterized in that The top surface of the compression support (22) is provided with an annular sealing groove (25), and a sealing ring (251) is arranged in the sealing groove (25); the sealing ring (251) and the noise reduction buffer (5) are integrally formed.

8. A noise reduced six chamber RO pump as claimed in claim 1, wherein, Six driving chambers (26) are formed between the compression support (22) and the diaphragm (21).

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