CN107265567B - Water pressing type water storage tank for water purifier and water purifier - Google Patents
Water pressing type water storage tank for water purifier and water purifier Download PDFInfo
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- CN107265567B CN107265567B CN201710452190.4A CN201710452190A CN107265567B CN 107265567 B CN107265567 B CN 107265567B CN 201710452190 A CN201710452190 A CN 201710452190A CN 107265567 B CN107265567 B CN 107265567B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 249
- 238000003860 storage Methods 0.000 title claims abstract description 89
- 238000003825 pressing Methods 0.000 title description 5
- 238000007789 sealing Methods 0.000 claims abstract description 84
- 238000000926 separation method Methods 0.000 claims abstract description 72
- 230000008859 change Effects 0.000 claims abstract description 9
- 230000003014 reinforcing effect Effects 0.000 claims description 38
- 230000007246 mechanism Effects 0.000 claims description 17
- 239000011248 coating agent Substances 0.000 claims description 8
- 238000000576 coating method Methods 0.000 claims description 8
- 230000002035 prolonged effect Effects 0.000 abstract description 7
- 230000007704 transition Effects 0.000 abstract description 7
- 239000011257 shell material Substances 0.000 description 68
- 238000003466 welding Methods 0.000 description 15
- 238000000034 method Methods 0.000 description 14
- 230000008569 process Effects 0.000 description 14
- 238000004519 manufacturing process Methods 0.000 description 11
- 239000012528 membrane Substances 0.000 description 10
- 239000000463 material Substances 0.000 description 9
- 230000035882 stress Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 7
- 230000006835 compression Effects 0.000 description 6
- 238000007906 compression Methods 0.000 description 6
- 238000005452 bending Methods 0.000 description 4
- 239000008213 purified water Substances 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- -1 polyethylene Polymers 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 230000008094 contradictory effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 238000001223 reverse osmosis Methods 0.000 description 2
- 239000003351 stiffener Substances 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000007751 thermal spraying Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
- B65D90/02—Wall construction
- B65D90/08—Interconnections of wall parts; Sealing means therefor
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Water Treatment By Sorption (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a pressurized water storage tank for a water purifier and the water purifier, wherein the pressurized water storage tank comprises two half shells and a flexible separation layer which are arranged in opposite directions, the two half shells are respectively provided with a water inlet and a water outlet, the two half shells respectively comprise a cavity shell and a ring plate with a sealing connection function, the ring plate is positioned at the periphery of the cavity shell, and the sealing surface of the ring plate adjacent to the periphery of the inner surface of the cavity shell and the periphery inner surface of the cavity shell are in smooth transition; the flexible separation layer comprises a sealing connection part and a shape change part, wherein the sealing connection part is in a sealing ring shape and is positioned at the periphery of the shape change part; the sealing connection part of the flexible dividing layer is clamped between the sealing surfaces of the two annular plates, and the two annular plates are connected with the sealing connection part in a sealing and fixing mode. Compared with the prior art, the pressurized water storage tank has the advantages that the sealing surface of the annular plate adjacent to the periphery of the inner surface of the cavity shell and the periphery inner surface of the cavity shell are in smooth transition, so that the service life of the flexible separation layer is prolonged, and the use cost is reduced.
Description
Technical Field
The invention relates to the technical field of water production equipment, in particular to a pressurized water type water storage tank for a water purifier and the water purifier.
Background
In order to solve the contradiction that when a user takes water, a large flow (more than 800 mL/min) is needed and the flow of reverse osmosis water purification mechanism water is usually smaller (the flow of most RO mechanism water is about 130 mL/min), a water storage tank is configured for each RO machine with small water flow (such as a 50GPD RO machine), a rubber diaphragm capable of dividing the inner cavity of the water storage tank into an air cavity and a water cavity is arranged in the water storage tank for discharging the water in a standby state of the machine, and the air supply cavity is pre-filled with air pressure of about 0.04MPa (which is equivalent to about 4m water column), which is the water storage tank of the reverse osmosis water purifier widely used in the market at present, and can be also called as a compressed air water storage tank, and the following defects exist:
1. poor safety
The air pressure in the water storage tank is approximately 0.2-0.3 MPa when the machine is in standby, products produced by individual enterprises can reach 0.4MPa, the compressed air stores a lot of energy, once the strength of the water storage tank is insufficient, for example, the quality problem exists in the products, or the pressure bearing capacity of the water storage tank is reduced due to the aging of shell materials caused by the use of the products exceeding a specified age, the water storage tank can explode, the property loss of users or the personnel injury is caused, and in fact, the explosion accident occurs for a plurality of times.
2. The water flow rate of the water purifier is influenced, the concentrated water quantity generated during water production is large, and the energy consumption is large
Before the water purifier is used, the water cavity volume in the water storage tank is zero, the air cavity volume reaches the maximum, and certain pressure exists. After the water purifier is started to produce water, the purified water is pressed into the water cavity of the water storage tank, so that the volume of the water cavity is gradually increased, the gas in the water cavity is gradually compressed, the volume of the gas is gradually reduced, and meanwhile, the pressure in the tank is gradually increased. Along with the water making process, the water cavity volume is larger and larger, the air cavity volume is smaller and smaller, and meanwhile, the pressure in the tank is larger and larger, so that the back pressure is gradually increased, namely the resistance is gradually increased, in the water making process of the water purifier, and the water making flow of the water purifier is gradually reduced. If the power of the water pump is unchanged, the pressure at the outlet end of the water pump is increased, namely, the pressure at the raw water side of the membrane in the membrane processor is increased, the discharge flow of the concentrated water is increased after the pressure is increased, and the time required for preparing the equivalent purified water is prolonged after the flow of the produced water is reduced, namely, more energy is consumed.
3. Large volume, large occupied space and high manufacturing cost.
Because the air cavity is arranged in the water storage tank, the volume of the air cavity cannot be reduced to zero at any time, and the space occupied by the minimum volume of the air cavity cannot be used for storing water at any time, the size of the water storage tank is relatively large, and the manufacturing cost is relatively high. In addition, in order to ensure that the water storage tank does not explode, a strong pressure-bearing capacity of the water storage tank is generally required, which requires a relatively high material strength of the water storage tank and a sufficient wall thickness of the water storage tank, which increases the cost.
For the above problems, there are improvements, such as replacing the compressed air type water storage tank with the compressed water type water storage tank, and simultaneously changing the pipeline principle of the water purifier into a form which can adapt to the compressed water type water storage tank. This known art has a pressurized water storage tank of this type: the outer shell is spherical, a deformable inner container is arranged in the outer shell, a cavity in the inner container is used as a water cavity, the area between the outer side of the inner container wall and the spherical shell is another water cavity, water is pressed into one water cavity, and water in the other water cavity is pressed out.
However, the pressurized water storage tank has the following disadvantages:
1. for the structure with a small opening arranged on the spherical outer shell, in order to load the inner container, the outer shell needs to be manufactured into two halves, and the two halves of the outer shell need to be fixedly connected in a sealing way, but the connecting part is not easy to manufacture into a smooth transition surface, and the unsmooth inner surface can generate local deformation concentration or stress concentration when the inner container is deformed, so that the fatigue life of the inner container is influenced.
2. For the structure with a large opening arranged on the spherical outer shell, the liner can be installed from the large opening, however, the smooth transition shape of the joint between the plugging part with the large opening and the outer shell needs to be realized only by a complex structure and high processing precision, and the cost is also affected to a certain extent.
3. The deformable inner container is spherical (when filled with water), the area of the deformable inner container is approximately equal to the inner surface area of the spherical outer shell, the consumable is more, the manufacturing is difficult, and the inner part of the inner container is difficult to clean, so that the manufacturing and using costs are slightly high.
In addition, the compressed air type water storage tanks which are widely used in the market are not suitable for the compressed air type water storage tanks, and the reason is that:
the air tap is not smooth, and the diaphragm can deform and concentrate or concentrate stress after being tightly attached to the air tap, so that the diaphragm can be broken quickly; the structure of the middle part of the water storage tank for sealing and fixing the periphery of the diaphragm is not bilaterally symmetrical, and when the diaphragm approaches to the surface of one side tank body, the deformation generated by the diaphragm is very small, and the deformation is generated when the diaphragm is used as a compressed air water storage tank, so the service life is not influenced; when the diaphragm approaches to the surface of the tank body at the other side, the diaphragm can generate great deformation, and when the diaphragm is used as a water storage tank with a pressurized water type, the great deformation can often generate the great deformation, and the service life of the diaphragm can be obviously influenced.
In view of the above drawbacks, the present inventors have finally achieved the present invention through long-time studies and practices.
Disclosure of Invention
In order to solve the technical defects, the invention adopts the technical proposal that,
on one hand, the water storage tank comprises two half shells and a flexible separation layer, wherein the two half shells are arranged in opposite directions, the two half shells are provided with water inlets and water outlets, each half shell comprises a cavity shell and a ring plate with a sealing connection function, the ring plates are positioned on the periphery of the cavity shell, and the sealing surface of the ring plates adjacent to the periphery of the inner surface of the cavity shell and the inner surface of the periphery of the cavity shell are in smooth transition; the flexible separation layer comprises a sealing connection part and a shape change part, wherein the sealing connection part is in a sealing ring shape and is positioned at the periphery of the shape change part; the sealing connection part of the flexible dividing layer is clamped between the sealing surfaces of the two annular plates, and the two annular plates are connected with the sealing connection part in a sealing and fixing mode.
Preferably, the shape changing part is soft and easy to deform, and the shape of the shape changing part is in a vessel shape or the same as the shape of the inner surface of the half shell in the non-stressed state.
Preferably, at least one of the two surfaces of the flexible separation layer, which are in contact with water, is provided with a coating or a coating.
Preferably, the cavity shell of the half shell is hemispherical, and the water inlet and the water outlet are arranged in the center of the hemisphere.
Preferably, the hemispherical half-shell extends outwardly at the circular periphery of the opening to form a cylindrical section, and the annular plate for sealing connection extends radially from the port of the cylindrical section.
Preferably, the cavity shell of the half shell is in an axisymmetric shape, the junction area of the edge of the cavity shell and the annular plate is a rotating surface formed by an elliptic curve around the central axis of the axisymmetric half shell, the rotating surface is tangent to the curved surface of the cavity shell and the annular plate respectively, the annular edge of the curved surface obtained after the curved end corresponding to the elliptic minor axis rotates is connected with the annular edge of the cavity shell in a tangent mode, and the annular edge of the curved surface obtained after the curved end corresponding to the elliptic major axis rotates is connected with the inner edge of the annular plate in a tangent mode.
Preferably, the water inlet and the water outlet are provided with supporting ribs, and the end face of the supporting ribs on one side of the flexible separation layer is overlapped with the curved surface where the inner side face of the half shell is located.
Preferably, the inner surface of the cavity shell of the half shell or the surface of the shape change part of the flexible separation layer is provided with a diversion rib or a diversion groove, and the diversion rib or the diversion groove is arranged in a manner of radially extending from the vicinity of the water inlet and outlet or the water inlet to other areas.
Preferably, the device further comprises a rigidity reinforcing mechanism for improving the sealing performance between the two annular plates and the flexible separation layer, and the rigidity reinforcing mechanism is fixedly arranged on the annular plates.
Preferably, the rigidity reinforcing mechanism is a reinforcing ring, and the reinforcing ring is arranged on the outer side of the ring plate.
Preferably, the rigidity reinforcing mechanism is a short cylindrical reinforcing rib and/or a radial short rib which directly extends out of the annular plate, the short cylindrical reinforcing rib is axially and vertically fixed on the surface of the annular plate, and the radial reinforcing rib is vertically fixed on the annular plate and points to the center of the half shell.
Preferably, the rigidity reinforcing mechanism comprises: the first short cylindrical reinforcing rib is arranged between the first annular plate and the second annular plate.
Still another aspect provides a water purifier, which comprises a membrane processor, a water inlet, a water outlet and a concentrated water discharge port, and is characterized by further comprising a pressurized water type water storage tank, wherein the purified water outlet of the membrane processor is respectively communicated with the water outlet and one water cavity of the pressurized water type water storage tank, the concentrated water outlet of the membrane processor is respectively communicated with the other water cavity of the pressurized water type water storage tank and the concentrated water discharge port, and the water inlet of the membrane processor is communicated with the water inlet of the water purifier.
Compared with the prior art, the pressurized water storage tank for the water purifier and the water purifier provided by the invention have the advantages that the sealing surface of the annular plate adjacent to the periphery of the inner surface of the cavity shell and the periphery inner surface of the cavity shell are smoothly transited, so that the service life of the flexible separation layer is prolonged, and the cost is saved.
In addition, compared with the spherical deformable liner pressurized water storage tank of the prior art, the flexible separation layer is in a vessel shape, namely a hemispherical shape or a bowl shape on the premise of the same water storage capacity, the area of the deformation part is about half of the area of the spherical deformable liner, the material is obviously saved, and the manufacturing process of the hemispherical or bowl-shaped flexible separation layer is simple and easy to ensure the quality, so that the pressurized water storage tank has lower cost and is easy to popularize and apply.
When the two half shells adopt a detachable structure, both sides of the flexible separation layer can be cleaned, so that the use cost can be reduced. The parts have simple shapes, are convenient to manufacture and are easy to ensure quality.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are used in the description of the embodiments will be briefly described below.
FIG. 1 is a schematic view of a first embodiment of a pressurized water storage tank for a water purifier according to the present invention;
FIG. 2 is a schematic view of a half shell of a first embodiment of a pressurized water storage tank for a water purifier according to the present invention;
FIG. 3 is a schematic view of a flexible separation layer in a first embodiment of a pressurized water storage tank for a water purifier according to the present invention;
FIG. 4 is a schematic illustration of the structure of a flexible separator layer with a film or coating on the surface;
FIG. 5 is an enlarged view of portion B of FIG. 2;
FIG. 6 is a schematic diagram of a second embodiment of a pressurized water storage tank for a water purifier according to the present invention;
FIG. 7 is a schematic view of a third embodiment of a pressurized water storage tank for a water purifier according to the present invention;
FIG. 8 is a top view of a fourth embodiment of a pressurized-water storage tank for a water purifier according to the present invention;
FIG. 9 is a schematic view of a structure of a half-shell of a fourth embodiment of a pressurized water storage tank for a water purifier according to the present invention;
FIG. 10 is a schematic diagram of a fifth embodiment of a pressurized water storage tank for a water purifier according to the present invention;
FIG. 11 is a plan view of a sixth embodiment of a pressurized-water storage tank for a water purifier according to the present invention;
FIG. 12 is a schematic view of a seventh embodiment of a pressurized water storage tank for a water purifier according to the present invention;
fig. 13 is a schematic view of a rigidity reinforcing mechanism in a seventh embodiment of a pressurized water storage tank for a water purifier according to the present invention.
Detailed Description
The above and further technical features and advantages of the present invention are described in more detail below with reference to the accompanying drawings.
Example 1
Fig. 1 shows a schematic structure of a pressurized water storage tank for a water purifier according to the present invention, and fig. 2 shows a schematic structure of a half-shell. The pressurized water storage tank comprises two half-shells 1 and a flexible separation layer 4. Both half-shells 1 are integral parts, which each comprise a ring plate 105 for sealing connection and a cavity shell 103 for containing water, wherein the ring plate 105 is positioned at the periphery of the cavity shell 103. Preferably, the sealing surface of the annular plate 105 adjacent to the inner surface periphery of the chamber housing 103 and the inner surface periphery of the chamber housing 103 are smoothly transited, so that local deformation concentration or stress concentration can be effectively prevented when the flexible separation layer 4 is deformed, thereby protecting the flexible separation layer 4 from being broken and prolonging the service life thereof. The two half shells 1 are provided with the water inlet and outlet 101, and preferably, the cavity shells 103 of the two half shells 1 are hemispherical, and the water inlet and outlet 101 is arranged in the center of the hemisphere, so that the spherical shape is the smallest in surface area and volume ratio, the surface area can be saved, namely the material is saved, the deformation of the flexible separation layer 4 is reduced when the volumes of the two water cavities are adjusted by changing the shape, and the service life of the flexible separation layer 4 is prolonged.
As shown in fig. 3, the flexible separation layer 4 is a thin-walled component, which includes a sealing connection portion 403 and a shape changing portion 402, wherein the sealing connection portion 403 is in a sealing ring shape and is located at the periphery of the shape changing portion 402. Preferably, the shape-changing portion 402 of the flexible separation layer 4 is in a vessel shape and is soft and easy to deform in a free state, and the vessel shape can improve the service life of the flexible separation layer 4, because the water storage tank is in a water full state of the water purification cavity for most of the time, the vessel shape can enable the flexible separation layer 4 to be attached to the inner wall of the half shell in an unstressed mode in the water full state, that is, the flexible separation layer is in an unstressed free state for most of the time, and thus, the vessel shape design can prolong the service life of the flexible separation layer from the aspect that stress can reduce the service life of the flexible separation layer. The vessel shape is the shape of the inner cavity of the vessel like a bowl, a basin, etc. capable of holding water. The flexible separation layer 4 is located in the middle of the two half shells 1 which are arranged in opposite directions, the sealing connection part 403 of the flexible separation layer 4 is clamped between the sealing surfaces of the two annular plates 105, and the sealing connection parts 403 of the two annular plates 105 and the flexible separation layer 4 are connected in a sealing and fixing mode.
The shape changing parts 402 of the flexible separation layer 4 respectively form two inner cavities which are used for storing water and are changed in association with the inner surfaces of the cavity shells 103 of the two half shells 1, and when the effective volume of any one inner cavity reaches the maximum value, the effective volume of the other inner cavity is the minimum value. After the gas in the two inner cavities is completely replaced by water, water in one inner cavity is injected, water in the other inner cavity is extruded, and the injected water quantity is equal to the extruded water quantity, namely: even though the volumes of the two half-shells (shell parts) are not equal, the effective volumes of the two inner cavities are equal after the assembly with the flexible separation layer. Preferably, the two half-shells 1 have equal volumes of the housing 103, which makes it possible to have an effective volume equal to the maximum volume of the inner cavities, i.e. a null volume of zero. It is further preferred that the shape and dimensions of the inner surfaces of the cavity shells 103 of the two half-shells 1 are identical, which further ensures that no dead volume is created. Preferably, the shape of the flexible separation layer 4 in the unstressed state is the same as the shape of the inner surface of the half-shell 1. The material of the flexible separation layer 4 is rubber. As shown in fig. 4, the structure of the flexible separation layer with a film or coating on the surface is schematically shown, at least one of the two surfaces of the flexible separation layer 4, which are in contact with water, is provided with a film 404 or coating, which has the characteristics of no foreign odor and can effectively block the foreign odor and the foreign odor generated by the main material of the flexible separation layer, the material of the film or coating is polyethylene, polypropylene, polytetrafluoroethylene, or the film can be a film lamination process, the coating can be a thermal spraying process, the material is a food grade sanitary material which is not easy to generate foreign odor and foreign odor, and is easy to generate deformation and not easy to crack when the thickness is sufficiently thin (for example, the film thickness is not more than 50 microns).
In this embodiment, the sealing connection portion 403 of the two ring plates 105 and the flexible separation layer 4 are connected by adopting a sealing fixing manner of a fastener, the fastener is a bolt 2 and a nut 3, the ring plates 105 are provided with bolt holes 104, the bolts 2 pass through the bolt holes 104 and then are screwed by the nuts 3, and the sealing connection portion 403 of the flexible separation layer 4 is clamped by the two ring plates 105 so as to realize sealing and fixing connection. Of course, the fastener can also be a screw, a screw hole is arranged on the annular plate, the screw is screwed into the screw hole, and the two annular plates 105 are clamped on the sealing connection part 403 of the flexible separation layer 4 so as to realize sealing fixed connection; the fastener can also be a double-end stud, a bolt hole is arranged on the annular plate, the double-end stud passes through the stud hole and is screwed by nuts at two ends of the stud, and the two annular plates 105 are clamped on the sealing connection part 403 of the flexible separation layer 4 so as to realize sealing and fixing connection.
Of course, besides the sealing and fixing manner of fastening members, the sealing and fixing connection portion 403 of the two ring plates 105 and the flexible separation layer 4 can also be realized by adopting a welding process or a bonding process, when adopting the welding process or the bonding process, the opposite surfaces of the two ring plates 105 are provided with annular welding surfaces or annular bonding surfaces and annular sealing surfaces, the annular sealing surfaces are on the inner ring side of the annular welding surfaces or the annular bonding surfaces, and the sealing and fixing connection portion 403 of the flexible separation layer 4 is arranged between the two annular sealing surfaces. When the welding process is adopted, the two annular welding surfaces are directly welded to form a welding joint, and the welding joint can be realized by adopting thermal fusion welding or hot plate welding; when the bonding process is adopted, the two annular bonding surfaces are directly bonded to form a bonding joint. Before welding or bonding, the sealing connection portion 403 of the flexible separation layer 4 should be clamped by the two annular plates to achieve a sealing state, the sealing state should be continuously clamped during the welding or bonding process, and the sealing state can be continuously maintained after the welding or bonding work is completed, that is, water in one cavity cannot permeate or leak into the other cavity, and cannot leak outwards through the welding surface or bonding surface.
As shown in fig. 5, which is an enlarged view of the portion B in fig. 2, in this embodiment, the cavity shells 103 of the two half shells 1 are axisymmetric, the intersection area of the edges of the cavity shells and the ring plate 105 is a rotation surface 107 formed by an elliptic curve around the central axis of the axisymmetric shell, the rotation surface 107 is tangent to the edges of the cavity shells 103 and the ring plate 105, the annular edge of the curved surface obtained after the curved end corresponding to the elliptic minor axis rotates is connected with the annular edge of the cavity shells in a tangent manner, and the annular edge of the curved surface obtained after the curved end corresponding to the elliptic major axis rotates is connected with the inner edge of the plane of the ring plate in a tangent manner. The smaller the radius of curvature of the deformation (bending) of the flexible separation layer 4 is, the larger the bending stress born by the separation layer is, and the flexible separation layer is more easily broken, so that the radius of curvature of the inner surface of the transition zone of the half shell is as large as possible, the bending stress can be better reduced, the service life (referred to as bending fatigue life) of the flexible separation layer is prolonged, and the diameter of the sealing surface is required to be increased more than the diameter of the cavity shell so as to be easily realized; on the other hand, however, the larger the diameter of the sealing surface, the larger the force the structure at the sealing surface is subjected to, the less easily ensured sealing effect, and the larger the diameter of the sealing surface, the larger the occupied space, so that in order to ensure a better sealing effect, improve the stress state of the structure at the sealing surface and reduce the occupied space as much as possible, it is required that the diameter of the sealing surface is increased smaller than the diameter of the chamber housing. In short, one factor is that the diameter is required to be as large as possible, and the other factor is that the diameter is required to be as small as possible, which are contradictory. However, the use of the elliptical curve rotation surface 107 as the boundary transition region between the annular plate plane and the semi-shell circular arc surface is a good solution for satisfying the two contradictory requirements as much as possible, specifically, the curvature radius of the flexible separation layer when deformed (bent) can be maximized under the condition that the diameter of the sealing surface is not larger than the diameter of the cavity shell, so that the service life of the flexible separation layer is prolonged.
Example two
As shown in fig. 6, a schematic structural diagram of a pressurized water storage tank for a water purifier according to the present invention is shown, where the pressurized water storage tank of the present embodiment is different from the pressurized water storage tank of the first embodiment in that: the water inlet/outlet 101 of the water storage tank in this embodiment is provided with a supporting rib 102, and the end surface of the supporting rib 102 on one side of the flexible separation layer is overlapped with the curved surface where the inner side surface of the half shell 1 is located. The supporting ribs 102 are used for supporting the flexible separation layer 4 when the flexible separation layer 4 is deformed to be closely attached to the inner side surface of the half shell 1, so that deformation and stress of the flexible separation layer 4 are reduced, and the flexible separation layer 4 is prevented from being crushed at the water inlet and outlet 101.
Example III
As shown in fig. 7, a schematic structural diagram of a pressurized water storage tank for a water purifier according to the present invention is provided, and the pressurized water storage tank of the present embodiment is different from the pressurized water storage tank of the second embodiment in that: the hemispherical half shell 1 of the water storage tank of the embodiment extends outwards from the circular periphery of the opening of the half shell to form a straight barrel section 114, and the port of the straight barrel section 114 faces the radially extending annular plate 105 with the sealing connection function, so that the volume of the half shell can be increased without increasing the diameter by adding the straight barrel section 114, and the water storage capacity is improved.
Example IV
Fig. 8 is a top view of a pressurized water storage tank for a water purifier according to the present invention, and fig. 9 is a schematic structural diagram of a half-shell in the pressurized water storage tank according to the present embodiment. The pressurized-water type water storage tank of the present embodiment is different from the pressurized-water type water storage tank of the second embodiment in that: the inner surface of the cavity shell of the half shell 1 of the pressurized water storage tank of the embodiment is provided with the diversion ribs 109 or diversion grooves, and the diversion ribs 109 or diversion grooves are arranged in a manner of radially extending from the vicinity of the water inlet and outlet or the water outlet to the rest areas, and the height of the diversion ribs or the depth of the diversion grooves is not more than 0.3-0.8 mm. Naturally, the flow guide rib 109 or the flow guide groove may be provided on the surface of the shape change portion of the flexible separator. When the water storage amount of the first water cavity formed by the inner surface of the cavity shell of one half shell and the shape changing part of the flexible separation layer reaches the maximum value, the other surface of the flexible separation layer can be tightly attached to the inner surface of the cavity shell of the other half shell (can form the second water cavity), at the moment, the volume of the first water cavity reaches the maximum value, the volume of the second water cavity is reduced to the minimum value, if the second water cavity is filled with water at the moment, the flexible separation layer is gradually peeled off from the inner surface of the cavity shell of the other half shell, and if the flow guide ribs or flow guide grooves are arranged on the inner surface of the cavity shell of the half shell or the shape changing part of the flexible separation layer, the flexible separation layer at the edge position of the flow guide ribs or the flow guide grooves is not tightly attached to the inner surface of the cavity shell, namely a gap exists, the gap is easy to be penetrated by water flow, the flexible separation layer at the position is easy to peel off from the inner surface of the cavity shell, then the peeling area is gradually increased, the stress condition of the flexible separation layer in the process is improved, and the service life of the flexible separation layer is prolonged.
Example five
As shown in fig. 10, a schematic structural diagram of a pressurized-water storage tank for a water purifier according to the present invention is provided, and the pressurized-water storage tank according to the present embodiment is different from the pressurized-water storage tank according to the fourth embodiment in that: the pressurized-water type water storage tank of this embodiment further includes two rigidity reinforcing mechanisms, in this embodiment, the rigidity reinforcing mechanisms are reinforcing rings 110, which are respectively disposed outside the annular plates 105 of the two half-shells 1, so that the sealing performance between the two annular plates 105 and the flexible separation layer 4 can be significantly improved. The reason for this is analyzed as follows:
the sealing ring in the area near the fastening pieces can be compressed tightly, the sealing performance is good, the area between the two fastening pieces, especially the compression condition of the sealing ring in the area near the middle point between the two fastening pieces, is greatly influenced by the rigidity of the ring plate, if the rigidity is insufficient, deformation can be generated under the action of the internal pressure of the shell, and the deformation result is that the sealing ring in the area is insufficient in compression degree to cause leakage. In other words, the leakage condition is caused by uneven circumferential compression of the sealing ring, the compression amount near the fastening piece is large, and the relative compression amount in other areas is small. Such circumferential compression unevenness can be significantly improved, i.e., sealing performance can be significantly improved, if reinforcing rings capable of significantly increasing rigidity are provided on both sides of the outer portion of the two ring plates.
For the situation that the two half shells and the flexible separation layer are in sealing and fixed connection through a welding process or a bonding process, there are two rings of sealing connection structures, the outer ring of the ring plates of the two half shells is directly welded or bonded to realize sealing connection, and the inner ring is compressed by the inner rings of the two ring plates to realize sealing connection. As long as the strength of the welded joint or the bonded joint is sufficient and there is no penetration defect, the outer ring sealing is not problematic, i.e., the water in the water storage tank does not leak to the outside. However, if the rigidity of the ring plates is insufficient, the ring plates may be deformed by the internal pressure of the tank by turning (internal turning), and as a result of the deformation, the inner rings of the two ring plates have insufficient pressure to compress the sealing joint portion of the flexible separator, that is, have a tendency to loosen, resulting in failure of the inner ring seal, and internal leakage, that is, water in the two water chambers leaks from each other. If reinforcing rings which can significantly increase the rigidity of the annular plates are arranged on both sides of the outer parts of the two annular plates, the overturning of the annular plates can be significantly reduced, and the sealing performance can be significantly improved.
Example six
As shown in fig. 11, in a top view of a pressurized-water storage tank for a water purifier according to the present invention, the pressurized-water storage tank according to the present embodiment is different from the pressurized-water storage tank according to the fifth embodiment in that: the rigidity reinforcing mechanism in the pressurized water storage tank of this embodiment is a short cylindrical reinforcing rib 111 and/or a radial short rib 115 which directly extend out of the annular plate 105, the short cylindrical reinforcing rib 111 is axially and vertically fixed on the surface of the annular plate 105, the radial reinforcing rib 115 is vertical to the annular plate 105 and points to the center of the half shell 1, and the short cylindrical reinforcing rib 111 or the radial short rib 115 can be welded or bonded with the outer surface of the half shell or can be an integral part with the half shell.
Example seven
As shown in fig. 12, a schematic structural diagram of a water-pressing tank for a water purifier according to the present invention is shown in fig. 13, and the water-pressing tank according to the present embodiment is different from the water-pressing tank according to the fifth embodiment in that: the rigidity reinforcing mechanism in the pressurized-water type water storage tank of this embodiment includes: the first ring plate 74 and the second ring plate 73 parallel to the ring plate 105 of the half shell 1, the first short cylindrical reinforcing rib 71 and the second short cylindrical reinforcing rib 75 perpendicular to the ring plate 105, the second short cylindrical reinforcing rib 75 is arranged between the first ring plate 74 and the second ring plate 73, the second ring plate 73 is provided with a through hole 72, and the through hole 72 corresponds to the bolt hole 104 of the ring plate 105 of the half shell 1. The first ring plate 74, the second ring plate 73, the first short cylindrical stiffener 71 and the second short cylindrical stiffener 75 are fixedly connected or are integrated.
Example eight
The water purifier comprises the pressurized water storage tank, the membrane processor, the water inlet, the water outlet and the concentrated water discharge port in any one of the embodiments, wherein the purified water outlet of the membrane processor is respectively communicated with the water outlet and one water cavity of the pressurized water storage tank, the concentrated water outlet of the membrane processor is respectively communicated with the other water cavity of the pressurized water storage tank and the concentrated water discharge port, and the water inlet of the membrane processor is communicated with the water inlet of the water purifier.
1. Compared with the spherical deformable inner container pressurized water storage tank in the prior art, the flexible separation layer is in a vessel shape, namely a hemispherical shape or a bowl shape on the premise of the same water storage capacity, the area of the deformation part is about half of the area of the spherical deformable inner container, the material is obviously saved, the manufacturing process of the hemispherical or bowl-shaped flexible separation layer is simple, the quality is easy to ensure, and the pressurized water storage tank has lower cost and is easy to popularize and apply.
2. When the two half shells adopt a detachable structure, both sides of the flexible separation layer can be cleaned, so that the use cost can be reduced.
3. The parts have simple shapes, are convenient to manufacture and are easy to ensure quality.
The foregoing description of the preferred embodiment of the invention is merely illustrative of the invention and is not intended to be limiting. It will be appreciated by persons skilled in the art that many variations, modifications, and even equivalents may be made thereto without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (3)
1. The water storage tank comprises two half shells and a flexible separation layer, wherein the two half shells are arranged in opposite directions, and are provided with water inlets and water outlets; the flexible separation layer comprises a sealing connection part and a shape change part, wherein the sealing connection part is in a sealing ring shape and is positioned at the periphery of the shape change part; the sealing connection part of the flexible dividing layer is clamped between the sealing surfaces of the two annular plates, the two annular plates and the sealing connection part are connected in a sealing and fixing mode, the shape changing part is soft and easy to deform, the shape of the shape changing part is in a vessel shape or the shape of the shape changing part is the same as that of the inner surface of the half shell when the shape changing part is not in a stress state, at least one of the two surfaces of the flexible dividing layer, which are in contact with water, is provided with a coating or a film, the cavity shell of the half shell is hemispherical, the water inlet and outlet is arranged in the center of the hemisphere, the hemispherical half shell extends outwards at the circular periphery of the opening to form a straight barrel section, the annular plate with the sealing connection function extends radially at the port of the straight barrel section, the cavity shell of the half shell is in an axisymmetric shape, the junction area of the cavity shell and the annular plate is a rotating surface formed by elliptic curve around the central axis of the axisymmetric half shell, the rotating surface is respectively tangent with the curved surface of the cavity shell and the annular plate, the annular edge of the curved surface obtained after the curved end corresponding to the elliptical short axis rotates is connected with the annular edge of the cavity shell in a tangent mode, the annular edge of the curved surface obtained after the curved end corresponding to the elliptical long axis rotates is connected with the inner edge of the annular plate in a tangent mode, the water inlet and outlet is provided with a supporting rib, the end surface of one side of the flexible separation layer coincides with the curved surface where the inner side surface of the half shell is positioned, the inner surface of the cavity shell of the half shell or the surface of the shape change part of the flexible separation layer is provided with a diversion rib or a diversion groove, the arrangement mode of the diversion rib or the diversion groove is that the diversion groove radially extends from the vicinity of the water inlet and outlet or the water inlet to other areas, the stiffness reinforcing mechanism is a reinforcing ring, the stiffness reinforcing ring is arranged on the outer side of the annular plate, the rigidity reinforcing mechanism is a short cylindrical reinforcing rib and/or a radial short rib, the short cylindrical reinforcing rib and/or the radial short rib directly extend out of the annular plate, the short cylindrical reinforcing rib is axially and vertically fixed on the surface of the annular plate, and the radial reinforcing rib is vertically fixed on the annular plate and points to the center of the half shell.
2. The pressurized-water storage tank for a water purifier according to claim 1, wherein the rigidity reinforcing mechanism is used for improving sealing performance between two annular plates and the flexible separation layer, and the rigidity reinforcing mechanism is fixedly arranged on the annular plates.
3. The pressurized-water storage tank for a water purifier according to claim 2, wherein the rigidity reinforcing mechanism comprises: the first short cylindrical reinforcing rib is arranged between the first annular plate and the second annular plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710452190.4A CN107265567B (en) | 2017-06-15 | 2017-06-15 | Water pressing type water storage tank for water purifier and water purifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710452190.4A CN107265567B (en) | 2017-06-15 | 2017-06-15 | Water pressing type water storage tank for water purifier and water purifier |
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| Publication Number | Publication Date |
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| CN107265567A CN107265567A (en) | 2017-10-20 |
| CN107265567B true CN107265567B (en) | 2023-10-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710452190.4A Active CN107265567B (en) | 2017-06-15 | 2017-06-15 | Water pressing type water storage tank for water purifier and water purifier |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB802702A (en) * | 1956-04-06 | 1958-10-08 | Dewandre Co Ltd C | Improvements in or relating to hydraulic accumulators |
| CN101880075A (en) * | 2010-05-12 | 2010-11-10 | 高新区益腾净水设备研发中心 | Pressure water storage barrel |
| CN201704158U (en) * | 2010-05-13 | 2011-01-12 | 许红新 | Water purifier automatically recycling and preferentially using concentrated water |
| CN203710799U (en) * | 2014-02-26 | 2014-07-16 | 江苏正本净化节水科技实业有限公司 | Filter element shell for water purifier |
| CN205990263U (en) * | 2016-08-06 | 2017-03-01 | 日出东方太阳能股份有限公司 | Hybrid water is to water pressure water tank and high-recovery counter-infiltration system |
-
2017
- 2017-06-15 CN CN201710452190.4A patent/CN107265567B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB802702A (en) * | 1956-04-06 | 1958-10-08 | Dewandre Co Ltd C | Improvements in or relating to hydraulic accumulators |
| CN101880075A (en) * | 2010-05-12 | 2010-11-10 | 高新区益腾净水设备研发中心 | Pressure water storage barrel |
| CN201704158U (en) * | 2010-05-13 | 2011-01-12 | 许红新 | Water purifier automatically recycling and preferentially using concentrated water |
| CN203710799U (en) * | 2014-02-26 | 2014-07-16 | 江苏正本净化节水科技实业有限公司 | Filter element shell for water purifier |
| CN205990263U (en) * | 2016-08-06 | 2017-03-01 | 日出东方太阳能股份有限公司 | Hybrid water is to water pressure water tank and high-recovery counter-infiltration system |
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|---|---|
| CN107265567A (en) | 2017-10-20 |
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