RO pump

Abstract

The utility model relates to an RO (reverse osmosis) pump, which belongs to the field of booster pumps and comprises an RO pump head and a driving motor. The RO pump head comprises a pump head shell and a pump head device arranged in the pump head shell; the pump head shell comprises an upper shell, a middle shell and a lower shell; the pump head device comprises a driving cam, a water fetching support rotationally installed on the driving cam, a diaphragm piece installed on the middle shell, a control support installed between the middle shell and the upper shell, a water inlet valve piece installed on the control support and a water outlet valve piece installed on the control support. The water fetching support is provided with a driving column. The middle shell is provided with an arrangement groove used for arrangement of the diaphragm piece, and a driving through hole corresponding to the driving column is formed in the bottom face of the arrangement groove. The diaphragm piece comprises a driving diaphragm part attached to the bottom face of the arrangement groove and an installation ring part connected to the outer edge of the driving diaphragm part and attached to the side wall of the arrangement groove. The upper shell is provided with an annular protruding edge which abuts against the installation ring part in a sealed mode. The pump head has the effect of improving the sealing effect at the position of the pump head shell.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of booster pumps, in particular to an RO pump. BACKGROUND

[0002] The RO pump is one of the core components of the water purification industry, especially household water purifiers, which can realize the suction and discharge of liquid through the cooperative movement between the rotor and the stator.

[0003] The RO pump comprises a pump head shell and a pump head assembly installed in the pump head shell. The pump head shell comprises an upper shell, an intermediate shell and a lower shell. The pump head assembly comprises a diaphragm, a control bracket abutting the top surface of the diaphragm, and a water hitting bracket connected to the diaphragm by a screw. In order to ensure the sealing effect between the upper shell and the intermediate shell, the existing RO pump usually has a sealing ring groove between the upper shell and the intermediate shell, and a sealing ring is arranged in the sealing ring groove. Then the diaphragm is pressed tightly to the intermediate shell by the control bracket, so as to achieve the sealing effect.

[0004] In view of the above-mentioned related technology, the present application provides an RO pump. CONTENT OF THE UTILITY MODEL

[0005] In order to improve the sealing effect of the upper shell and the intermediate shell in the pump head shell, the present application provides an RO pump.

[0006] The present application provides an RO pump, which adopts the following technical scheme:

[0007] An RO pump comprises an RO pump head and a driving motor driving the RO pump head; the RO pump head comprises a pump head shell and a pump head device arranged in the pump head shell; the pump head shell comprises an upper shell, an intermediate shell and a lower shell; the pump head device comprises a driving cam installed on the output shaft of the driving motor, a water hitting bracket rotatably installed on the driving cam, a diaphragm installed on the intermediate shell, a control bracket installed between the intermediate shell and the upper shell, a water inlet valve piece installed on the control bracket, and a water outlet valve piece installed on the control bracket; the water hitting bracket has a driving column; the intermediate shell has an arrangement groove for arranging the diaphragm, and a driving through hole corresponding to the driving column is formed in the bottom surface of the arrangement groove; the diaphragm comprises a driving membrane part abutting the bottom surface of the arrangement groove and a mounting ring part connected to the outer edge of the driving membrane part and abutting the side wall of the arrangement groove; the upper shell has an annular convex rib sealingly abutting the mounting ring part.

[0008] By adopting the technical scheme, in the installation process of the RO pump, first, the driving convex ring is connected with the output shaft of the driving motor and arranged in the inner cavity of the lower shell, then the water hitting support is rotatably installed on the driving cam, then the middle shell is arranged at the top end of the lower shell, the diaphragm sheet is arranged in the arrangement groove of the middle shell, then the control support is arranged on the top surface of the diaphragm sheet and pressed on the top surface of the diaphragm sheet through the upper shell, and the arrangement groove on the middle shell and the annular convex rib on the upper shell are arranged to help improve the sealing between the upper shell and the middle shell.

[0009] The RO pump has the installation ring part arranged on the diaphragm sheet and the annular convex rib arranged on the upper shell, so that the sealing between the upper shell and the middle shell is realized, compared with the traditional RO pump structure, the diaphragm sheet can be used for the sealing cooperation between the middle shell and the lower shell and the sealing cooperation between the upper shell and the middle shell, the sealing ring structure between the upper shell and the middle shell is reduced, and the compactness of the whole RO pump head structure is more ideal.

[0010] Optionally, the diaphragm sheet is provided with an installation through hole corresponding to the driving through hole, and the diaphragm sheet has a sealing structure at the installation through hole, the sealing structure comprises a first ring part arranged on the top surface of the diaphragm sheet and a second ring part arranged on the bottom surface of the diaphragm sheet, the driving column has a sealing groove for arranging the second ring part, and the driving column is fixedly connected with the diaphragm sheet through a screw.

[0011] By adopting the technical scheme, when the driving column is connected with the diaphragm sheet through a screw, the bottom surface of the second ring part of the sealing sleeve abuts against the bottom surface of the sealing groove of the driving column, so that the sealing connection between the diaphragm sheet and the driving column is realized, and the probability of water flowing from the inner cavity of the middle shell to the inner cavity of the lower shell is reduced.

[0012] Optionally, the height of the installation ring part is greater than the depth of the arrangement groove.

[0013] By adopting the technical scheme, the height of the installation ring part of the diaphragm sheet is greater than the depth of the arrangement groove, so that the installation ring part of the diaphragm sheet is extruded when the upper shell and the middle shell are connected, the sealing between the upper shell and the middle shell is ensured, and the probability of water leakage between the middle shell and the upper shell is reduced.

[0014] Optionally, the control support comprises a control plate and a control ring part connected to the outer edge of the control plate and abutting against the inner wall of the installation ring part, the bottom of the control ring part abuts against the top surface of the driving film part, the control support has a corner part at the connection between the control plate and the control ring part, and the upper shell has an abutting groove in sealing abutment with the corner part.

[0015] By adopting the technical scheme, the cooperation between the upper shell and the control bracket is improved in tightness by controlling the cooperation between the corner of the control bracket and the abutting groove of the upper shell, the control bracket is pressed against the top surface of the diaphragm by the abutting groove, and the cooperation between the bottom surface of the control ring and the top surface of the driving membrane is matched to improve the sealing between the control bracket and the diaphragm, thereby further reducing the probability of water leakage between the intermediate shell and the upper shell.

[0016] Optionally, the control bracket is provided with a separation seat extending towards the diaphragm on the bottom surface of the control plate, and the bottom surface of the separation seat is attached to the top surface of the diaphragm.

[0017] By adopting the technical scheme, the separation seat is arranged to separate the cavity between the control bracket and the diaphragm and correspondingly arranged with the driving column. The bottom surface of the separation seat is attached to the top surface of the diaphragm to improve the sealing effect between the control bracket and the diaphragm and ensure the stability of the connection between the control bracket and the diaphragm.

[0018] Optionally, the inner cavity of the upper shell has a sealing convex ring extending towards the control bracket, the top surface of the control plate is provided with a mounting boss, the mounting boss is provided with a sealing groove for arranging the sealing convex ring, and the control plate is provided with a sealing gasket at the sealing groove.

[0019] By adopting the technical scheme, the cavity between the upper shell and the control bracket is separated into two independent cavities by the cooperation between the sealing groove and the sealing convex ring and the arrangement of the sealing gasket in the sealing groove, thereby reducing the probability of mutual flow of water between the two cavities.

[0020] Optionally, a first sealing cavity is formed between the upper shell and the control bracket, the first sealing cavity is separated into a water inlet cavity and a water outlet cavity by the sealing convex ring, and the top surface of the outer side of the upper shell is provided with a water inlet connector vertically extending upwards and communicating with the water inlet cavity and a water outlet connector vertically extending upwards and communicating with the water outlet cavity.

[0021] By adopting the technical scheme, the water inlet connector and the water outlet connector on the top surface of the outer side wall of the upper shell are vertically arranged to improve the compactness of the structure of the RO pump head. Unlike the traditional interface form of the RO pump, the water inlet connector and the water outlet connector enable the RO pump to be connected by sleeving a water pipe, which facilitates the installation of the water pipe on the RO pump by the operator, so that the RO pump can be applied to outdoor scenes.

[0022] Optionally, the control plate is provided with a mounting protruding ring at the outer edge of the mounting protruding column, and the bottom surface of the control plate is provided with a first annular groove at the corresponding position of the mounting protruding ring, and the first annular groove is provided with a water inlet penetrating the upper and lower surfaces of the control plate along the circumferential direction of the mounting protruding ring, and the water inlet valve plate is arranged in the first annular groove, and the water inlet valve plate has a first straight rod portion arranged at the mounting protruding ring and a first abutting portion abutting the top surface of the mounting protruding ring.

[0023] By adopting the above technical scheme, the control plate is provided with a mounting protruding ring at the outer edge of the mounting protruding column, and the bottom surface of the control plate is provided with a first annular groove at the corresponding position of the mounting protruding ring, which ensures uniform distribution of the water inlet, improves the stability and uniformity of the water inlet process, and the arrangement of the water inlet valve plate in the first annular groove helps to limit the water to enter the chamber between the control bracket and the diaphragm plate from the water inlet chamber.

[0024] Optionally, the mounting protruding column is provided with a second annular groove at the inner edge of the sealing groove, and the second annular groove is provided with a water outlet penetrating the upper and lower surfaces of the control plate along the circumferential direction, and the water outlet valve plate is arranged in the second annular groove.

[0025] By adopting the above technical scheme, the arrangement of the water outlet valve plate in the second annular groove helps to reduce the probability of water flowing from the water outlet chamber to the chamber between the control bracket and the diaphragm plate, and ensures normal operation of the RO pump.

[0026] In summary, the present application has at least one of the following beneficial technical effects:

[0027] 1. The RO pump realizes the sealed connection between the upper housing and the intermediate housing through the arrangement of the mounting ring on the diaphragm plate and the arrangement of the annular protruding rib on the upper housing, reduces the sealing ring structure between the upper housing and the intermediate housing compared with the traditional RO pump structure, and makes the structure of the entire RO pump head more compact.

[0028] 2. The sealing structure of the diaphragm plate at the mounting through hole enables the bottom surface of the second ring to abut against the bottom surface of the sealing groove when the screw connects the diaphragm plate and the drive column, so that the diaphragm plate and the drive column are sealingly connected.

[0029] 3. The arrangement of the water inlet connector and the water outlet connector arranged vertically on the top surface of the upper housing helps to improve the compactness of the structure of the RO pump head, facilitates the installation of water pipes on the RO pump by the operator, and thus enables the above-mentioned RO pump to be applied to outdoor scenes. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is a schematic diagram of the RO pump in the embodiment of the present application.

[0031] Figure 2is an explosion schematic diagram of the RO pump in the embodiment of the present application.

[0032] Figure 3 is a cross-sectional schematic diagram of the RO pump in the embodiment of the present application.

[0033] Figure 4 is a schematic diagram of cooperation of the driving column, the intermediate shell and the diaphragm in the embodiment of the present application.

[0034] Figure 5 is Figure 3 is a partial enlarged schematic diagram at A.

[0035] Figure 6 is a schematic diagram of the control support in the embodiment of the present application.

[0036] Figure 7 is Figure 3 is a partial enlarged schematic diagram at B.

[0037] Figure 8 is a schematic diagram of cooperation of the control support, the water inlet valve sheet and the water outlet valve sheet in the embodiment of the present application.

[0038] BRIEF DESCRIPTION OF DRAWINGS 1, RO pump head; 11, pump head shell; 111, upper shell; 1111, abutting groove; 1112, annular convex rib; 1113, sealing convex ring; 112, lower shell; 113, intermediate shell; 1131, arrangement groove; 1132, driving through hole; 12, water inlet chamber; 13, water outlet chamber; 14, water inlet connector; 15, water outlet connector; 2, driving motor; 31, driving cam; 32, water hitting support; 321, driving bearing; 322, driving seat; 3221, driving column; 32211, sealing groove; 33, diaphragm sheet; 331, driving membrane part; 3311, first ring part; 3312, second ring part; 332, mounting ring part; 34, control support; 341, control plate; 3411, mounting boss; 3412, sealing groove; 3413, sealing washer; 3414, mounting convex ring; 3415, first annular groove; 3416, water inlet; 3417, second annular groove; 3418, water outlet; 342, control ring part; 343, separation seat; 3431, first limiting groove; 3432, second limiting groove; 344, corner part; 35, water inlet valve sheet; 351, first straight rod part; 352, first abutting part; 36, water outlet valve sheet; 361, second straight rod part; 362, second abutting part. DETAILED DESCRIPTION

[0039] The following will be described in detail in combination with the accompanying Figures 1-8 The present application will be further described in detail.

[0040] The embodiment of the present application discloses an RO pump. Referring to Figure 1 and Figure 2A RO pump comprises a RO pump head 1 and a driving motor 2 for driving the RO pump to operate. The RO pump head 1 comprises a pump head housing 11 and a pump head device arranged in the pump head housing 11. The pump head housing 11 comprises an upper housing 111, a lower housing 112 and an intermediate housing 113 connecting the upper housing 111 and the lower housing 112. The upper housing 111, the intermediate housing 113 and the lower housing 112 are connected and fixed by the same screw.

[0041] With reference to Figure 2 and Figure 3 The pump head device comprises a driving cam 31 mounted on an output shaft of the driving motor 2, a water hitting bracket 32 rotatably mounted on an outer wall of the driving cam 31, a diaphragm 33 mounted on the intermediate housing 113, a control bracket 34 mounted between the intermediate housing 113 and the upper housing 111, a water inlet valve 35 mounted on the control bracket 34 and a water outlet valve 36 mounted on the control bracket 34. The driving cam 31 and the water hitting bracket 32 are arranged in an inner cavity of the lower housing 112 of the pump head housing 11. The water hitting bracket 32 comprises a driving bearing 321 rotatably mounted on the driving cam 31 and a driving seat 322 sleeved on the driving bearing 321. The driving cam 31 has an abutting surface for the driving bearing 321 to be arranged, and the driving seat 322 has driving columns 3221 protruding towards the diaphragm 33. An installation hole is formed in a bottom of the inner cavity of the lower housing 112, and the lower housing 112 and the driving motor 2 are connected and fixed by a screw. In the embodiment, the number of the driving columns 3221 is three.

[0042] With reference to Figure 4 The intermediate housing 113 has an arrangement groove 1131 for the diaphragm 33 to be arranged, and the intermediate housing 113 is provided with driving through holes 1132 corresponding to the driving columns 3221 at a bottom surface of the arrangement groove 1131. The diaphragm 33 comprises a driving membrane part 331 abutting the bottom surface of the arrangement groove 1131 and a mounting ring part 332 connected to an outer edge of the driving membrane part 331 and extending upwards, and an outer wall of the mounting ring part 332 abuts a side wall of the arrangement groove 1131. When the diaphragm 33 is arranged in the arrangement groove 1131, a height of the mounting ring part 332 of the diaphragm 33 is greater than a depth of the arrangement groove 1131.

[0043] With reference to Figure 4 and Figure 5The driving membrane part 331 of the diaphragm 33 is provided with a mounting hole at the driving through hole 1132, and the driving membrane part 331 has a sealing structure at the mounting hole. The sealing structure includes a first ring part 3311 arranged on the top surface of the driving membrane part 331 and a second ring part 3312 arranged on the bottom surface of the driving membrane part 331. The top surface of the driving column 3221 is provided with a sealing groove 32211 for arranging the second ring part 3312, and the driving column 3221 is connected and fixed with the driving membrane part 331 of the diaphragm 33 by screws. When the screws are arranged at the mounting hole, the second ring part 3312 is sealed and abuts against the bottom surface of the sealing groove 32211, thereby ensuring the sealed connection between the driving column 3221 and the diaphragm 33.

[0044] With reference to Figure 2 and Figure 6 The control support 34 is arranged between the upper shell 111 and the middle shell 113 and abuts against the top surface of the driving membrane part 331 of the diaphragm 33. The control support 34 includes a control plate 341, a control ring part 342 connected to the outer edge of the control plate 341 and abutting against the inner wall of the mounting ring part 332 of the diaphragm 33, and a partition seat 343 connected to the bottom surface of the control plate 341 and extending towards the diaphragm 33.

[0045] With reference to Figure 3 and Figure 7 The control support 34 has a corner part 344 at the connection between the control plate 341 and the control ring part 342, and the upper shell 111 has an abutting groove 1111 sealed and abutting against the corner part 344. The bottom surface of the upper shell 111 also has an annular convex rib 1112 sealed and abutting against the top surface of the mounting ring part 332. When the bottom surface of the upper shell 111 abuts and cooperates with the top surface of the middle shell 113, the abutting groove 1111 in the upper shell 111 drives the control support 34 to be pressed down, thereby pressing the control support 34 against the top surface of the diaphragm 33, and the annular convex rib 1112 on the top surface of the upper shell 111 is sealed and cooperates with the top surface of the mounting ring part 332 of the diaphragm 33. At this time, the bottom of the control ring part 342 of the control support 34 abuts against the top surface of the driving membrane part 331, and the bottom of the partition seat 343 also abuts against the top surface of the driving membrane part 331 of the diaphragm 33. Through the sealed cooperation between the diaphragm 33 and the arranging groove 1131, the sealed cooperation between the diaphragm 33 and the upper shell 111, and the sealed cooperation between the control support 34 and the diaphragm 33, the upper shell 111 and the middle shell 113 can have a desired sealing effect without the need for additional sealing rings or other structures.

[0046] With reference to Figure 3 and Figure 8The inner cavity top surface of the upper housing 111 has a sealing protruding ring 1113 extending towards the control bracket 34, and the top surface of the control plate 341 of the control bracket 34 is provided with a mounting boss 3411 having a sealing groove 3412 for arranging the sealing protruding ring 1113, and when the sealing protruding ring 1113 is arranged in the sealing groove 3412, a sealing gap is formed between the bottom surface of the sealing protruding ring 1113 and the bottom surface of the sealing groove 3412, and the sealing groove 3412 is provided with a sealing washer 3413 in the sealing gap.

[0047] With reference to Figure 3 When the upper housing 111 is mounted on the top surface of the middle housing 113, a first sealed chamber is formed between the upper housing 111 and the control bracket 34 mounted between the upper housing 111 and the middle housing 113. The first sealed chamber includes the water inlet chamber 12 and the water outlet chamber 13 after being separated by the sealing protruding ring 1113, and the upper housing 111 is provided with a water inlet connector 14 vertically extending upwards and communicating with the water inlet chamber 12 and a water outlet connector 15 vertically extending upwards and communicating with the water outlet chamber 13 on the top surface of the outer side wall. The vertical water inlet connector 14 and the water outlet connector 15 are arranged to enable the RO pump to be applied to a small device.

[0048] With reference to Figure 2 And Figure 3 A second sealed chamber is formed between the diaphragm 33 and the control bracket 34, and the second sealed chamber includes a first power chamber, a second power chamber and a third power chamber after being separated by the partition seat 343, and the first power chamber, the second power chamber and the third power chamber are respectively arranged with one driving column 3221.

[0049] With reference to Figure 6 And Figure 8 In order to limit the water in the second sealed chamber from entering the water inlet chamber 12, the control plate 341 is provided with a mounting protruding ring 3414 circumferentially spaced apart from the outer edge of the mounting boss 3411, and the bottom surface of the control plate 341 is provided with a first annular groove 3415 arched upwards at the corresponding position of the mounting protruding ring 3414, and the first annular groove 3415 is provided with a water inlet port 3416 penetrating the upper and lower surfaces of the control plate 341 circumferentially spaced apart along the outer edge of the mounting protruding ring 3414. The water inlet valve piece 35 is arranged in the first annular groove 3415, and the water inlet valve piece 35 has a first straight rod portion 351 arranged in the mounting protruding ring 3414 and a first abutting portion 352 abutting the top surface of the mounting protruding ring 3414.

[0050] With reference to Figure 6 And Figure 8, in order to limit the water in the water outlet chamber 13 back to the second sealing chamber, the mounting boss 3411 is provided with a downwardly recessed second annular groove 3417 at the inner edge of the sealing groove 3412, and the second annular groove 3417 is provided with water outlets 3418 penetrating the upper and lower sides of the control plate 341 in circumferential intervals. The water outlet valve piece 36 is arranged in the second annular groove 3417, and the water outlet valve piece 36 has a second straight rod portion 361 and a second abutting portion 362. The partition seat 343 has a first limiting groove 3431 for arranging the second straight rod portion 361 and a second limiting groove 3432 for arranging the second abutting portion 362, and the inner diameter of the first limiting groove 3431 is smaller than the inner diameter of the second limiting groove 3432.

[0051] The implementation principle of the RO pump in the embodiment of the application is as follows: through the abutting arrangement of the diaphragm piece 33 and the groove 1131 arranged in the intermediate shell 113 and the setting of the annular protrusion 1112 on the bottom surface of the upper shell 111, when the upper shell 111 and the intermediate shell 113 are connected and installed, the mounting ring portion 332 of the diaphragm piece 33 is extruded, thereby improving the sealing performance of the connection between the upper shell 111 and the intermediate shell 113, and the inner side wall of the mounting ring portion 332 of the control bracket 34 is also abuttingly matched with the diaphragm piece 33, further guaranteeing the sealing performance of the connection between the upper shell 111 and the intermediate shell 113. Further, the sealing structure on the driving film portion 331 of the diaphragm piece 33 at the mounting through hole improves the sealing cooperation between the intermediate shell 113 and the lower shell 112, thereby improving the sealing effect of the RO pump and reducing the setting of the sealing ring structure between the upper shell 111 and the intermediate shell 113, and improving the compactness of the RO pump head structure.

[0052] The above are preferred embodiments of the application, and do not limit the protection scope of the application, so that: any equivalent changes made according to the structure, shape, principle of the application should be covered within the protection scope of the application.

Claims

1. An RO pump, comprising an RO pump head (1) and a drive motor (2) for driving the RO pump head (1); the RO pump head (1) comprises a pump head housing (11) and a pump head assembly disposed within the pump head housing (11); the pump head housing (11) comprises an upper housing (111), an intermediate housing (113), and a lower housing (112); the pump head assembly comprises a drive cam (31) mounted on the output shaft of the drive motor (2), a water pumping bracket (32) rotatably mounted on the drive cam (31), a diaphragm plate (33) mounted on the intermediate housing (113), a control bracket (34) mounted between the intermediate housing (113) and the upper housing (111), an inlet valve plate (35) mounted on the control bracket (34), and an outlet valve plate (36) mounted on the control bracket (34); the water pumping bracket (32) has a drive column (3221); characterized in that, The intermediate housing (113) has an arrangement groove (1131) for arranging the diaphragm (33) and a drive through hole (1132) corresponding to the drive post (3221) is provided on the bottom surface of the arrangement groove (1131); the diaphragm (33) includes a drive membrane portion (331) that fits against the bottom surface of the arrangement groove (1131) and a mounting ring portion (332) that connects to the outer edge of the drive membrane portion (331) and fits against the side wall of the arrangement groove (1131); the upper housing (111) has an annular protrusion (1112) that seals against the mounting ring portion (332).

2. The RO pump according to claim 1, characterized in that, The diaphragm (33) has a corresponding mounting through hole at the drive through hole (1132) and the diaphragm (33) has a sealing structure at the mounting through hole. The sealing structure includes a first ring portion (3311) arranged on the top surface of the diaphragm (33) and a second ring portion (3312) arranged on the bottom surface of the diaphragm (33). The drive column (3221) has a sealing groove (32211) for the second ring portion (3312) to be arranged. The drive column (3221) and the diaphragm (33) are connected and fixed by screws.

3. An RO pump according to claim 2, characterized in that, The height of the mounting ring (332) is greater than the depth of the arrangement groove (1131).

4. An RO pump according to claim 1, characterized in that, The control bracket (34) includes a control plate (341) and a control ring (342) connected to the outer edge of the control plate (341) and fitted to the inner wall of the mounting ring (332). The bottom of the control ring (342) is fitted to the top surface of the drive diaphragm (331). The control bracket (34) has a corner (344) at the connection between the control plate (341) and the control ring (342). The upper housing (111) has an abutment groove (1111) that seals against the corner (344).

5. An RO pump according to claim 4, characterized in that, The control bracket (34) has a partition seat (343) extending toward the diaphragm (33) on the bottom surface of the control plate (341), and the bottom of the partition seat (343) is attached to the top surface of the diaphragm (33).

6. An RO pump according to claim 4, characterized in that, The upper housing (111) has a sealing ring (1113) extending toward the control bracket (34) on its inner cavity top surface. The control plate (341) has a mounting boss (3411) on its top surface and a sealing groove (3412) for arranging the sealing ring (1113). The control plate (341) has a sealing gasket (3413) at the sealing groove (3412).

7. An RO pump according to claim 6, characterized in that, A first sealed chamber is formed between the upper housing (111) and the control bracket (34). The first sealed chamber is divided by the sealing protrusion ring (1113) and includes an inlet chamber (12) and an outlet chamber (13). The outer top surface of the upper housing (111) is provided with an inlet connector (14) that extends vertically upward and communicates with the inlet chamber (12) and an outlet connector (15) that extends vertically upward and communicates with the outlet chamber (13).

8. An RO pump according to claim 6, characterized in that, The control plate (341) is provided with mounting protrusions (3414) spaced circumferentially along the outer edge of the mounting protrusion (3411), and the bottom surface of the control plate (341) is provided with a first annular groove (3415) at the corresponding position of the mounting protrusions (3414). The first annular groove (3415) is provided with water inlets (3416) that penetrate the upper and lower sides of the control plate (341) spaced circumferentially along the mounting protrusions (3414). The water inlet valve plate (35) is arranged in the first annular groove (3415) and has a first straight rod portion (351) arranged on the mounting protrusions (3414) and a first abutting portion (352) abutting against the top surface of the mounting protrusions (3414).

9. An RO pump according to claim 8, characterized in that, The mounting boss (3411) has a second annular groove (3417) at the inner edge of the sealing groove (3412), and the second annular groove (3417) has water outlets (3418) that penetrate the upper and lower sides of the control plate (341) at circumferential intervals. The water outlet valve plate (36) is arranged in the second annular groove (3417).

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