CN110541808A

CN110541808A - RO pump

Info

Publication number: CN110541808A
Application number: CN201910814788.2A
Authority: CN
Inventors: 王庆勇
Original assignee: YUYAO LANSHAN ELECTRICAL MACHINE ENTERPRISE CO Ltd
Current assignee: YUYAO LANSHAN ELECTRICAL MACHINE ENTERPRISE CO Ltd
Priority date: 2019-08-30
Filing date: 2019-08-30
Publication date: 2019-12-06

Abstract

The invention provides an RO pump, which comprises a pump head, a cam water fetching support assembly matched with the pump head, and a driving motor for driving the cam water fetching support assembly, wherein the pump head comprises: the pump head comprises a pump head shell and a communicating piece, wherein the communicating piece comprises a water inlet cavity arranged in the middle and a plurality of drainage cavities arranged on the outer side of the communicating piece; the RO pump adopts a water inlet system and a water outlet system which are opposite to the traditional RO pump, and no matter how the RO pump is placed, the drain hole can be always positioned at the top, so that the RO pump can effectively discharge air in the cavity, the RO pump can continuously pressurize water to meet the filtering and purifying conditions of the RO membrane, and on the other hand, the RO pump can be effectively prevented from shaking and noise through effective exhaust, the work efficiency and the service life of the RO pump are improved.

Description

RO pump

Technical Field

The invention relates to a water pump, in particular to an RO water pump.

Background

The RO pump is also called an RO booster pump, an RO diaphragm pump, or a reverse osmosis booster pump, and is one of the direct-flow diaphragm booster pumps. The RO pump is one of the key components of the water purifier, has the functions of pressurization and self-absorption, and provides water pressure and water flow required by the work of the RO pump, thereby realizing the purpose of producing purified water by the RO water purifier.

The RO water purifier mainly realizes the filtration and purification of water through the reverse osmosis technology of an RO membrane. However, the normal work of the RO membrane must be under a constant water pressure environment, and the RO membrane is greatly influenced by factors of climate and water temperature; the water pressure required for the normal operation of the RO membrane is supplied from the RO pump, and thus, whether the RO pump can supply a stable water pressure to the RO membrane determines whether the RO membrane can normally produce water, in other words, the performance of the RO pump determines the performance of the RO membrane.

When the existing RO pump works, an eccentric wheel and a transmission head are driven by a motor, so that a piston is driven to reciprocate up and down alternately; when the piston moves from top to bottom, the pressurizing chamber generates a vacuum effect, and the water inlet one-way valve is opened and water is sucked into the pressurizing chamber under the action of vacuum suction; when the piston moves from bottom to top, the sucked water is squeezed upwards, the water inlet one-way valve is sealed positively under the action of squeezing pressure, and when the pressure is greater than the reaction force of the water outlet one-way valve, the water outlet one-way valve is opened and the water is discharged to the high pressure chamber.

However, the piston can suck air inevitably in the reciprocating process, but the existing RO pump is arranged in the center for the drainage cavity, the water inlet cavity is arranged on the periphery of the drainage cavity, the drainage hole is always positioned below the water inlet hole, the sucked air is usually positioned above the water, and the RO pump is arranged in such a way that the air can not be discharged from the exhaust hole when the water is pressed out from the drainage hole, so that the air can be reserved in the cavity, the water can not be sucked, the motor and the piston can still move ceaselessly, the RO pump generates heat, shaking and noise are generated, the service life of the RO pump can be shortened, and the water purifier can not work normally.

Based on this, a RO pump that sets up the wash port in a low pressure intracavity in inlet opening top should be transported and give birth to, though this kind of RO pump can discharge the air effectively, but this also makes its pressure boost drainage effect greatly reduced, moreover, the exhaust effect of this kind of RO pump is subject to the installation mode of the pump body, can only install the low pressure chamber that the wash port set up above the inlet opening in the upside and just can realize the exhaust, this greatly increased the degree of difficulty when installing, maneuverability is poor.

Therefore, it is necessary to design a new type of RO pump that can exhaust air and is not affected by the installation method.

Disclosure of Invention

Technical problem to be solved

the invention provides an RO pump, which solves the problem that the existing RO pump can not exhaust gas effectively;

The invention provides an RO pump, which solves the problem that the exhaust effect of the existing RO pump is influenced by the installation mode of a pump body;

The invention provides an RO pump, which solves the problems that the existing RO pump can generate shake and noise and has short service life.

(II) technical scheme

In order to solve the above technical problem, the present invention provides an RO pump, including a pump head, a cam watering bracket assembly engaged with the pump head, and a driving motor for driving the cam watering bracket assembly, wherein the pump head includes: the pump head comprises a pump head shell, a pump head shell and a pump head cover, wherein the pump head shell comprises a low-pressure cavity and a high-pressure cavity, the low-pressure cavity is arranged in the middle of the pump head shell, and the high-pressure cavity is formed outside the low-pressure cavity; a check member disposed within the pump head housing to isolate the low pressure chamber from the high pressure chamber; the check piece comprises a water inlet cavity arranged above and a plurality of drainage cavities arranged below the check piece; the drainage cavity is internally provided with a plurality of water inlet holes (113) and a plurality of drainage holes (114), the drainage holes (114) are arranged on the outer side of the water inlet holes (113), the drainage cavity is communicated with the water inlet cavity through the water inlet holes, and the drainage holes are communicated with the drainage cavity and the high-pressure cavity through the drainage holes.

In one or more embodiments of the invention, the pump head housing and the check member are nested and matched with each other through a sealing ring

in one or more embodiments of the present invention, the pump head housing further includes a water inlet passage and a water outlet passage, the water inlet passage is communicated with the low pressure chamber, and the water outlet passage is communicated with the high pressure chamber.

in one or more embodiments of the invention, the water inlet cavity is arranged in the middle of the through-stop piece, is matched with the low-pressure cavity in shape and is in butt joint with the low-pressure cavity, and the water discharge cavity is circumferentially and uniformly arranged at the outer side part of the through-stop piece.

In one or more embodiments of the present invention, the drain hole is provided at an outer circumferential portion of the drain chamber, and the water inlet hole is provided at an outer circumferential portion of the water inlet chamber.

In one or more embodiments of the present invention, the through-stop member further includes a water inlet valve clamped below the water inlet cavity, and when the water inlet valve is not opened, the water inlet valve closes the water inlet hole.

In one or more embodiments of the present invention, the through-stop member further includes a drain valve clamped above the drain chamber, and when the drain valve is not opened, the drain valve closes the drain hole.

In one or more embodiments of the invention, the water inlet valve comprises a baffle plate arranged outside the water inlet valve and a filling member arranged inside the water inlet valve, wherein the baffle plate becomes thicker gradually from the connection part of the baffle plate and the filling member to the outside.

In one or more embodiments of the present invention, the inside of the drain valve is provided with a groove such that the thickness of the groove at the inside of the drain valve is smaller than the thickness of the outside.

In one or more embodiments of the present invention, the bottom surface of the drain chamber is an inclined surface such that the space of the drain chamber gradually increases from the inside to the outside.

In one or more embodiments of the invention, the cam water fetching bracket assembly comprises a plurality of pistons corresponding to the drainage cavities, and the pistons are connected with the output end of the driving motor to realize axial reciprocating motion in the drainage cavities.

In one or more embodiments of the present invention, the pump head further includes a diaphragm sleeved outside the through-stop piece, and the diaphragm is disposed below the piston.

in one or more embodiments of the invention, the diaphragm is made of a flexible material.

In one or more embodiments of the invention, the inlet chamber is polygonal in shape with an even number of sides of the discharge chamber.

(III) advantageous effects

the RO pump adopts a water inlet system and a water outlet system which are opposite to the traditional RO pump, and the drain hole can be always positioned at the top no matter how the RO pump is arranged, so that the RO pump can effectively discharge air in the cavity, the RO pump can continuously pressurize water to meet the filtering and purifying conditions of an RO membrane, on the other hand, the shaking and the noise of the RO pump can be effectively prevented through effectively discharging air, and the working efficiency and the service life of the RO pump are improved.

drawings

FIG. 1A is a schematic diagram of a pump head of a conventional RO pump;

FIG. 1B is a schematic structural view of a check member of a conventional RO pump;

FIG. 2 is a schematic perspective view of an RO pump of the present invention;

FIG. 3 is an exploded schematic view of an RO pump of the present invention;

FIG. 4 is a schematic diagram of the structure of the pump head of the RO pump of the present invention;

FIG. 5 is a schematic view of the structure of the pump head housing of the RO pump of the present invention

FIG. 6 is a schematic view of the structure of the check member of the RO pump of the present invention;

FIG. 7 is a schematic view of the inlet valve of the RO pump of the present invention;

FIG. 8 is a schematic view showing the structure of a drain valve of the RO pump according to the present invention;

FIG. 9A is a schematic view of one embodiment of a check member of the RO pump of the present invention;

FIG. 9B is a schematic view of another embodiment of a check member of the RO pump of the present invention.

Wherein: 1P-existing pump head; 10P-existing pump head housing; 11P-existing no-go piece; 103P-existing low pressure chamber; 104P-existing high pressure chamber; 111P-existing intake lumen; 112P-existing drainage chamber; 113P-existing water inlet; 114P-existing drain hole;

1-pump head; 2-a cam water fetching component; 3-driving a motor; 4-a membrane; 5-sealing ring; 10-a pump head housing; 11-a stop-go piece; 20-a piston; 101-a water inlet channel; 102-a water outlet channel; 103-a low pressure chamber; 104-a high pressure chamber; 111-water inlet cavity; 112-a drainage chamber; 113-a water inlet hole; 114-drainage holes; 12-a water inlet valve; 13-a drain valve; 121-baffle plate; 122-a filler; 131-grooves.

Detailed Description

the terms and words used in the following specification and claims are not limited to the literal meanings, but are used only by the inventors to enable a clear and consistent understanding of the invention. Accordingly, it will be apparent to those skilled in the art that the following descriptions of the various embodiments of the present invention are provided for illustration only and not for the purpose of limiting the invention as defined by the appended claims and their equivalents.

although ordinal numbers such as "first," "second," etc., will be used to describe various components, those components are not limited thereto. The term is used only to distinguish one element from another. For example, a first component could be termed a second component, and, similarly, a second component could be termed a first component, without departing from the teachings of the inventive concepts. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

the terminology used herein is for the purpose of describing various embodiments only and is not intended to be limiting. As used herein, the singular forms are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, numbers, steps, operations, components, elements, or combinations thereof, but do not preclude the presence or addition of one or more other features, numbers, steps, operations, components, elements, or groups thereof.

terms used herein, including technical and scientific terms, have the same meaning as terms commonly understood by one of ordinary skill in the art, unless otherwise defined. It will be understood that terms, such as those defined in commonly used dictionaries, have a meaning that is consistent with their meaning in the context of the relevant art.

As shown in fig. 1A-1B, a schematic diagram of the structure of a pump head of a conventional RO pump is illustrated. The existing pump head 1P comprises an existing pump head housing 10P and an existing check piece 11P, wherein the existing pump head housing 10P comprises an existing high-pressure cavity 104P arranged in the middle and an existing low-pressure cavity 103P formed outside the existing high-pressure cavity 104P, the existing high-pressure cavity 104P is communicated with the water outlet, and the existing low-pressure cavity 103P is communicated with the water inlet; specifically, the existing pump head housing 10P and the existing check 11P are nested to isolate the existing high pressure chamber 104P and the existing low pressure chamber 103P from each other.

More specifically, the existing check member 11P includes an existing drain cavity 112P disposed above and at the center of the existing check member 11P, and three existing inlet cavities 111P disposed outside and below the existing check member 11P, wherein the existing drain cavity 112P is interfaced with the existing high pressure cavity 104P. Furthermore, an existing water inlet hole 114P is formed in each existing water inlet cavity 111P, and the existing water inlet holes 114P communicate the existing water inlet cavity 111P with the existing low-pressure cavity 103P; further, the existing water inlet chamber 111P is further opened with an existing water discharge hole 114P, and the existing water discharge hole 114P connects the existing water inlet chamber 112P with the existing water discharge chamber 112P.

the piston is driven by the motor to axially reciprocate in the existing water inlet cavity 111P, when the piston moves downwards, a vacuum effect is generated in the existing water inlet cavity 111P, the water inlet one-way valve is opened under the action of vacuum suction, and the existing water is sucked into the existing water inlet cavity 111P from the low-pressure cavity 103P; when the piston moves upward, the water in the existing water inlet cavity 111P is squeezed, the water inlet check valve is sealed in the forward direction under the action of the squeezing pressure, when the pressure is greater than the reaction force of the water outlet check valve, the water outlet check valve is opened, and the pressurized water enters the existing high-pressure cavity 104P from the existing water discharge hole 114P through the existing water discharge cavity 112P and is discharged from the water outlet.

However, in the actual operation process, when water enters the existing water inlet chamber 111P, air enters the existing low pressure chamber 103P along with raw water, as shown in fig. 1A, no matter how the existing RO pump is installed, the existing water inlet hole 113P is always located above the existing water discharge hole 114P, and the sucked air is located above water, and when water is pressed out from the existing water discharge hole 114P, air cannot be discharged from the existing water discharge hole 114P, which causes air to accumulate in the chamber, so that water cannot be sucked into the existing water inlet chamber 111P from the existing low pressure chamber 103P, and at this time, the piston and the motor still work ceaselessly, which not only causes the RO pump to fail to work normally, but also generates heat, generates vibration and noise, and greatly reduces the service life of the RO pump.

Based on this, the present invention provides an RO pump. As shown in fig. 2 to 9, the RO pump includes a pump head 1, the pump head 1 includes a pump head housing 10, a low pressure chamber 103 and a high pressure chamber 104 formed at the periphery of the low pressure chamber 103 are formed at the middle of the pump head housing 10, the pump head housing 10 further includes a water inlet passage 101 and a water outlet passage 102, wherein the water inlet passage 101 is communicated with the low pressure chamber 103, so that raw water can enter the low pressure chamber 103 from the water inlet passage 101, and the water outlet passage 102 is communicated with the high pressure chamber 104, so that pressurized water can be discharged from the water outlet passage 102 through the high pressure chamber 104. In other words, the RO pump of the present invention employs a completely reverse water inlet and outlet system as compared with the existing RO pump, i.e., a low pressure chamber 103 is in an outer water outlet mode with an inner high pressure chamber 104 being outside.

Specifically, the pump head 1 further includes a through-opening member 11 sleeved in the pump head housing 10, the through-opening member 11 has a water inlet cavity 111 and three water drainage cavities 112, wherein the water inlet cavity 111 is provided above the through-opening member 11 and is located in the middle of the through-opening member 11, the water inlet cavity 111 is matched with the low-pressure cavity 103 in shape and is butted with each other, the water drainage cavities 112 are provided below the through-opening member 11, and the water drainage cavities 112 are circumferentially and uniformly distributed on the outer side of the through-opening member 11, so that the through-opening member 11 forms a regular triangle structure. Preferably, the stop-go element 11 and the pump head housing 10 are in a nested fit with each other via the sealing ring 5, which improves the sealing between the stop-go element 11 and the pump head housing 10. It will be understood that the direction towards the middle of the through stop 11 is defined as the medial side and the direction away from the middle as the lateral side.

More specifically, a plurality of water inlet holes 113 are formed in the drain cavity 112, the water inlet holes 113 communicate the drain cavity 112 with the water inlet cavity 111, and raw water in the low-pressure cavity 103 can enter the drain cavity 112 through the water inlet holes 113; the drain cavity 112 is further opened with a plurality of drain holes 114 located outside the water inlet holes, and the drain holes 114 communicate the drain cavity 112 with the high pressure cavity 104, so that the high pressure water in the high pressure cavity 104 can enter the high pressure cavity 104 through the drain holes 114. It should be understood by those skilled in the art that the number of the inlet chamber 111 and the outlet chamber 112 is only an example and not a limitation of the present invention.

Preferably, the shape of the inlet chamber 111 is hexagonal and matches and interfaces with the shape of the low pressure chamber 103, and it should be understood that the shape of the inlet chamber 111 is only an example in the drawings, and it may be configured as a circle or a polygon, and when the inlet chamber 111 is configured as a polygon, the number of sides thereof is an even number times the number of the drain chambers 112.

More preferably, as shown in fig. 9A and 9B, the drain hole 114 is opened at the outer peripheral portion of the drain chamber 112, the inlet hole 113 is opened at the outer peripheral portion of the inlet chamber 111, and the drain chamber 112 is positioned at the outer side of the inlet chamber 111, in other words, the drain hole 114 is positioned at the outer side of the inlet hole 113, so that the drain hole 114 in the upper drain chamber 112 is always positioned above the inlet hole 113 regardless of how the check member 11 is mounted, and by being disposed in such a manner that air sucked into the chamber along with raw water can be easily sucked from the uppermost inlet hole 113, and further, by entering the high pressure chamber 104 through the uppermost drain chamber 112 and discharging the RO pump from the outlet passage 102, no more air is accumulated in the chamber. The RO pump of the invention not only reduces the dependence on the installation mode, enables effective exhaust no matter what installation mode is adopted, but also prolongs the service life of the RO pump.

As shown in fig. 3, the RO pump further includes a cam water fetching bracket assembly 2 engaged with the pump head 1, and a driving motor 3 for driving the cam water fetching bracket assembly 2, the cam water fetching mechanism 2 includes three pistons 20 corresponding to the water discharging cavity 112, the pistons 20 are connected to the output end of the driving motor 3, and the driving motor 3 drives the pistons 20 to perform axial reciprocating motion in the water discharging cavity 111, so as to realize the suction and discharge of water. It should be understood that the number of pistons 20 shown in the figures is by way of example only, and that the number of pistons 20 corresponds to the number of drain chambers 112. Further, pump head 1 still includes cup joints the diaphragm 4 of making by flexible material outside ending the logical piece 11, and 4 rigid couplings of diaphragm are in the piston 20 below, and when piston 20 axial motion, diaphragm 4 is driven and is out of shape, and the supplementary suction and the discharge to water on the one hand, on the other hand can effectively prevent the water leakage in the drainage chamber 112, has strengthened the leakproofness of RO pump.

further, as shown in fig. 5, the opening stopping member 11 further includes a water inlet valve 12 clamped below the water inlet cavity 111, and when the water inlet valve 12 is not opened, the water inlet valve 12 covers the water inlet hole 113 to close the water inlet hole 113; the stopping member 11 further includes a drain valve 13 clamped above the drain chamber 112, and when the drain valve 13 is not opened, the drain valve 13 covers above the drain hole 114 to close the drain hole 114. When the piston 20 is driven to move from top to bottom, a vacuum effect is generated in the drainage cavity 112, the water inlet valve 13 is opened under the action of vacuum suction, and raw water is sucked into the drainage cavity 112 from the low pressure cavity 103 through the water inlet hole 113 of the water inlet cavity 111; when the piston moves from bottom to top, the raw water in the drainage cavity 112 is squeezed to close the water inlet valve 12, and simultaneously, the drainage valve 13 is opened under the action of pressure, and the pressurized water can be pressed into the high-pressure cavity 104 from the drainage hole 114 of the drainage cavity 112 and flows out from the water outlet channel.

Furthermore, as shown in fig. 7, the inlet valve 12 includes a blocking plate 121 disposed at the outer side and a filling member 122 disposed at the inner side, wherein the blocking plate 121 becomes thicker gradually from the connection portion with the filling member 122 to the outside, so that when raw water is sucked, the blocking plate 121 can be easily opened because the connection portion between the blocking plate 121 and the filling member 122 is thinner, and when water in the drainage cavity 112 is pressurized, the blocking plate 121 closes the water inlet hole 113, and because the outer side of the blocking plate 121 is thicker, the blocking plate 121 cannot be broken by the excessive pressure of water; the filling member 122 not only further enhances the connection strength between the inlet valve 115 and the through-stop member 11, but also fills the space inside the drain chamber 112 to prevent pressurized water from flowing into the inside.

accordingly, as shown in fig. 8, the inner side of the drain valve 13 is provided with the groove 131, so that the thickness of the groove 131 at the inner side of the drain valve 13 is smaller than that at the outer side, so that the drain valve 13 is more easily opened when draining water, and is not crushed by the water pressure in the high pressure chamber. Through the arrangement, the RO pump has higher working efficiency, and meanwhile, the damage rate of the RO pump is also reduced.

Furthermore, as shown in fig. 5, the bottom surface of the drainage chamber 112 is configured as an inclined surface, so that the space of the drainage chamber 112 gradually increases from inside to outside, when the water in the drainage chamber 112 is squeezed, because the inner space is larger than the outer space, the water pressure of the inner space is larger than the water pressure of the outer space, and the pressurized water naturally flows from a high pressure place to a low pressure place, and through such configuration, the pressurized water can be more easily discharged from the drainage hole 114, thereby further improving the working efficiency of the RO pump.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a RO pump, includes pump head (1), with pump head (1) complex cam subassembly (2) of fetching water, and be used for the drive the cam drive water drive motor (3) of subassembly (2), its characterized in that, pump head (1) includes:

The pump head comprises a pump head housing (10), wherein the pump head housing (10) comprises a low-pressure cavity (103) arranged in the middle of the pump head housing (10) and a high-pressure cavity (104) formed outside the low-pressure cavity (103);

A dead end (11), the dead end (11) being disposed within the pump head housing (10) to isolate the low pressure chamber (103) from the high pressure chamber (104); the communicating piece (11) comprises a water inlet cavity (111) arranged above and a plurality of drainage cavities (112) arranged below the communicating piece (11);

The drainage cavity (112) is internally provided with a plurality of water inlet holes (113) and a plurality of drainage holes (114), the drainage holes (114) are arranged on the outer sides of the water inlet holes (113), the drainage cavity (112) is communicated with the water inlet cavity (111) through the water inlet holes (113), and the drainage cavity (112) is communicated with the high-pressure cavity (104) through the drainage holes (114).

2. A RO pump according to claim 1 in which the pump head housing (10) and the check member (11) are in nested engagement with one another by means of a seal ring (5).

3. A RO pump according to claim 1 wherein the pump head housing (10) further comprises a water inlet passage (101) and a water outlet passage (102), the water inlet passage (101) communicating with the low pressure chamber (103) and the water outlet passage (102) communicating with the high pressure chamber (104).

4. A RO pump according to claim 3, characterized in that the inlet chamber (111) is arranged in the middle of the non-communicating member (11) and matches the shape of the low pressure chamber (103) and is in abutment with each other, and the outlet chamber (112) is circumferentially and uniformly arranged in the outer side of the non-communicating member (11).

5. The RO pump according to claim 4, wherein the drain hole (114) is provided at an outer circumferential portion of the drain chamber (112), and the inlet hole (113) is provided at an outer circumferential portion of the inlet chamber (111).

6. The RO pump of claim 5, wherein the check member (11) further comprises a feed valve (12) engaged under the feed chamber (111), the feed valve (12) closing the feed hole (113) when the feed valve (12) is not opened.

7. The RO pump according to claim 6, wherein the through-stop member (11) further comprises a drain valve (13) engaged above the drain chamber (112), the drain valve (13) closing the drain hole (114) when the drain valve (13) is not opened.

8. The RO pump of claim 6, wherein the feed valve (12) comprises a flap (121) disposed outside the feed valve (12) and a filler (122) disposed inside the feed valve (12), wherein the flap (121) becomes thicker gradually from the connection with the filler (122) outward.

9. An RO pump according to claim 7, characterized in that the inside of the discharge valve (13) is provided with a groove (131) so that the thickness of the discharge valve (13) at the groove (131) inside is smaller than the thickness of the outside.

10. The RO pump of claim 1, wherein the bottom surface of the drain chamber (112) is inclined such that the space of the drain chamber (112) is gradually increased from the inside to the outside.

11. The RO pump of claim 1, wherein the cam pump assembly (2) comprises a plurality of pistons (20) corresponding to the drain chambers (112), the pistons (20) being connected to the output of the drive motor (3) for axial reciprocation within the drain chambers (112).

12. The RO pump according to claim 11, wherein the pump head (1) further comprises a diaphragm (4) sleeved outside the check member (11), the diaphragm (4) being disposed below the piston (20).

13. The RO pump of claim 12, wherein the membrane (4) is made of a flexible material.

14. The RO pump of claim 1, wherein the intake chamber (111) is polygonal in shape with an even number of sides that is the number of sides of the discharge chamber (112).