CN109578640B

CN109578640B - Anti-siphon valve and sanitary ware using same

Info

Publication number: CN109578640B
Application number: CN201811374944.XA
Authority: CN
Inventors: 林孝发; 林孝山; 林山; 吴金华
Original assignee: Xiamen Komoo Intelligent Technology Co Ltd
Current assignee: Xiamen Komoo Intelligent Technology Co Ltd
Priority date: 2018-11-19
Filing date: 2018-11-19
Publication date: 2021-01-29
Anticipated expiration: 2038-11-19
Also published as: CN109578640A

Abstract

The invention discloses a valve capable of preventing siphoning and sanitary ware applying the valve, wherein the valve comprises a valve casing and a valve core, a fluid inlet and a fluid outlet are respectively arranged at two ends of the valve casing, the valve core is arranged in a valve cavity of the valve casing, the valve core is provided with a wedge-shaped deformation part facing the fluid outlet, and a slit capable of being opened and closed is arranged at the tail end of the deformation part; two pre-compaction structures are arranged in a valve cavity of the valve shell and are pre-compacted on the outer side surfaces of the two inclined walls of the deformation part one by one. The pre-compaction structure can extrude the deformation part, so that the deformation part can be more easily reset to the state of closing the slit after the slit is opened through deformation, and therefore the deformation part is less prone to fatigue and aging, the service life is longer, and the check effect of the valve is better.

Description

Anti-siphon valve and sanitary ware using same

Technical Field

The invention relates to a valve, in particular to an anti-siphon valve and sanitary ware using the same.

Background

A valve having a wedge-shaped deformation portion according to the related art is preferred because it has an anti-siphon function, and is widely used. Under the condition of no internal pressure, a slit at the tail end of a wedge-shaped deformation part of the valve is closed under the elastic action of the deformation part, and the slit is opened along with the gradual increase of the internal pressure to discharge fluid; when negative pressure occurs on the side where the fluid inlet of the valve is located, the deformation part of the valve deforms under the action of atmospheric pressure on the side where the fluid outlet is located, so that the slit is closed, and the anti-siphon function is realized. Because the deformation portion of this kind of valve is soft material, it is ageing easily to lead to the elasticity not enough after long-time the use to make the slit of deformation portion tail end can form a normal opening, when closing water, the backpressure can't directly make the slit seal, probably even cause the intermediate part of deformation portion to roll inwards, thereby can't reach the effect of non return.

Disclosure of Invention

The invention provides an anti-siphon valve and a sanitary ware using the same, which overcome the defects of the valve in the prior art.

The technical scheme adopted by the invention for solving the technical problems is as follows: a valve capable of preventing siphonage comprises a valve casing and a valve core, wherein a fluid inlet and a fluid outlet are respectively arranged at two ends of the valve casing, the valve core is arranged in a valve cavity of the valve casing, the valve core is provided with a wedge-shaped deformation part facing the fluid outlet, and a slit capable of being opened and closed is arranged at the tail end of the deformation part; two pre-compaction structures are arranged in a valve cavity of the valve shell and are pre-compacted on the outer side surfaces of the two inclined walls of the deformation part one by one.

Further, the pre-compression structure is a pressing block, the pressing block is provided with an inclined surface matched with the corresponding inclined wall of the deformation part, and the inclined surface abuts against the outer side surface of the corresponding inclined wall of the deformation part.

Furthermore, the pre-compression structure is a spring plate.

Furthermore, the valve shell comprises an upper shell provided with the fluid inlet and a lower shell provided with the fluid outlet, and the upper shell and the lower shell are connected and matched and enclose the valve cavity; the pre-compression structure is disposed in the lower case.

Furthermore, the valve core is also provided with an annular boss integrally connected with the head end of the deformation part, the outer diameter of the annular boss is larger than that of the deformation part, the deformation part is positioned in the lower shell, and the annular boss is limited between the upper shell and the lower shell.

Further, the cooperation has an assembly guide structure between case and the valve casing, should assemble guide structure including set up in a plurality of guide lugs of deformation portion lateral surface with set up in a plurality of guide slots of inferior valve internal side, guide lug and guide slot are pegged graft the cooperation one by one.

Furthermore, the tail end of the deformation part is outwards provided with an extension part, the extension part comprises two sheets which are oppositely arranged and positioned at two sides of the slit in the width direction, and the distance between the two sheets is matched with the width of the slit, or the distance between the tail ends of the two sheets is smaller than the width of the slit; the two sheets are separated from each other, or the two sides of the two sheets are connected one by one.

Furthermore, the extension portion is I-shaped or inverted T-shaped, the valve casing is provided with two convex ribs, and the two convex ribs are clamped at the inward concave positions on the two sides of the extension portion one by one.

The invention also provides a sanitary ware, which comprises a closestool, wherein the connecting waterway between the closestool and a water supply source is provided with the anti-siphon valve.

Furthermore, a water inlet pressure stabilizing valve is arranged on the connecting water path, and the valve is arranged in the water inlet end of the water inlet pressure stabilizing valve.

Compared with the prior art, the invention has the following beneficial effects:

1. because be equipped with two pre-compaction structures in the valve pocket of valve casing, these two pre-compaction structures are in one by one the lateral surface of two sloping walls of deformation portion to this extrusion and spacing deformation portion make the deformation of deformation portion comparatively even, open the state that resets to closing the slit more easily behind the slit, thereby make the deformation portion more be difficult for fatigue, ageing, life is longer, and valve non return effect is better.

2. The two thin slices can be quickly adsorbed together under the viscous force action of water by utilizing the soft characteristic of the thin slices, so that the water backflow is prevented, and the reverse water seal of the slit is increased.

3. Further set up on the valve casing the fin blocks the extension can increase the negative pressure bearing capacity of valve.

The invention is further explained in detail with the accompanying drawings and the embodiments; however, the anti-siphon valve and the sanitary ware using the same of the present invention are not limited to the embodiments.

Drawings

FIG. 1 is an exploded view of the present invention;

FIG. 2 is a cross-sectional view of the invention according to one embodiment;

FIG. 3 is a schematic structural view of a valve cartridge according to the first embodiment of the present invention;

fig. 4 is a bottom view of the lower case of the present invention;

fig. 5 is a sectional view a-a of a lower case of the present invention according to an embodiment;

FIG. 6 is a cross-sectional view of an intake pressure maintaining valve in accordance with one embodiment of the present invention;

FIG. 7 is a partially enlarged view of FIG. 6 according to an embodiment;

FIG. 8 is a schematic structural view of a valve cartridge according to a second embodiment of the present invention;

FIG. 9 is a cross-sectional view of a valve cartridge of the present invention according to a second embodiment;

FIG. 10 is a schematic structural view of the present invention according to a second embodiment;

FIG. 11 is a cross-sectional view of the present invention according to the second embodiment;

fig. 12 is a bottom view of the lower case of the present invention according to the second embodiment;

fig. 13 is a sectional view B-B of the lower case of the second embodiment of the present invention.

Detailed Description

Example one

Referring to fig. 1-5, the anti-siphon valve of the present invention comprises a valve housing and a valve core 3, wherein two ends of the valve housing are respectively provided with a fluid inlet 11 and a fluid outlet 21, the valve core 3 is disposed in a valve cavity of the valve housing, the valve core 3 has a wedge-shaped deformation portion 31 facing the fluid outlet 21, and a slit 311 capable of being opened and closed is disposed at a tail end of the deformation portion 31; two pre-compression structures are arranged in the valve cavity of the valve casing, and the two pre-compression structures are pre-compressed on the outer side surfaces of the two inclined walls of the deformation part 31 one by one to enable the deformation part 311 to deform. The valve housing comprises an upper housing 1 provided with the fluid inlet 11 and a lower housing 2 provided with the fluid outlet 21, which are connected and matched to form the valve cavity. The pre-compaction structure is arranged in the lower shell 2, and a sealing ring 4 is sleeved in an annular clamping groove formed in the periphery of the upper shell 1.

In this embodiment, the pre-pressing structure is pre-pressed at a middle position or a middle-upper position (the middle-upper position refers to a position between the middle portion and the head end of the inclined wall of the deformation portion) of the outer side surface of the inclined wall of the deformation portion 31, and a position below the middle portion of the deformation portion 31 (i.e., a position between the middle portion and the tail end of the deformation portion) is maintained in a freely elastically deformable state.

In this embodiment, the pre-compression structure is a pressing block 22, and the pressing block 22 has an inclined surface adapted to the corresponding inclined wall of the deformation portion 31, and the inclined surface abuts against the outer side surface of the corresponding inclined wall of the deformation portion 31.

In this embodiment, the valve element 3 further has an annular boss 32 integrally connected to a head end of the deformation portion 31, an outer diameter of the annular boss 32 is larger than an outer diameter of the deformation portion 31, the deformation portion 31 is located in the lower case 2, and the annular boss 32 is limited between the upper case 1 and the lower case 2. Specifically, most of the lower casing 2 is located in the upper casing 1, only the bottom of the lower casing is exposed, the annular accommodating groove 13 is formed in the upper casing 1, and the annular boss 32 is sleeved in the annular accommodating groove 13 and abuts against the top end of the lower casing 2. The bottom of the upper shell 1 is connected with the bottom of the lower shell 2 in a buckling mode, specifically, a plurality of clamping grooves 14 are distributed in the bottom of the upper shell 1 along the circumferential direction, a plurality of clamping blocks 24 are distributed in the bottom of the lower shell 2 along the circumferential direction, the clamping blocks 24 are clamped with the clamping grooves 14 one by one, and guide inclined planes are arranged on the clamping blocks 24 so as to be clamped into the clamping grooves 14.

In this embodiment, an assembly guide structure is fitted between the valve element 3 and the valve housing, the assembly guide structure specifically includes a plurality of guide protrusions 312 disposed on the outer side surface of the deformation portion 31 and a plurality of guide grooves 23 disposed on the inner side surface of the lower housing 2, and the guide protrusions 312 and the guide grooves 23 are in one-to-one insertion fit. The number of the guide protrusions 312 is two, but not limited to, and the two guide protrusions 312 are respectively located on the outer side surfaces of the two inclined walls of the deformation portion 31. The number of the guide grooves 23 is also two, and the positions of the two guide grooves 23 are matched with the positions of the two guide projections 312 one by one. The assembly guide structure can also play a role in stopping rotation of the valve core 3, so that the valve core 3 and the lower shell 2 are matched and kept stable, and the inclined wall of the deformation part 31 is prevented from being dislocated with the pressing block 22 of the lower shell 2.

During installation, firstly, the assembly guide structure is utilized to align the valve core 3 into the lower shell 2, and then the upper shell 1 is connected with the lower shell 2 in a buckling manner, so that the valve core 3 is limited between the upper shell 1 and the lower shell 2.

In the initial state, the slit 311 at the bottom end of the deformation portion 31 of the valve body 3 is closed. When fluid flows in from the fluid inlet 11 of the upper case 1, the deformation portion 31 is deformed by the gravity and the impact force of the fluid, so that the slit 311 thereof is opened, and the fluid can flow to the fluid outlet 21 of the lower case 2 through the slit 311 and flow out from the fluid outlet 21. When the fluid enters from the fluid outlet 21 of the lower case 2, since the slit 311 of the deformation portion 31 maintains the closed state, the fluid cannot flow to the fluid inlet 11 of the upper case 1 through the slit 311, thereby functioning as a check function.

Since the two pressing blocks 22 in the lower shell 2 press the two inclined walls of the deformation part 31 respectively, the deformation of the deformation part is relatively even, and the deformation part 31 is easier to return to the state of closing the slit 311 after opening the slit 311 (the pressing force of the pressing blocks 22 on the deformation part 31 provides deformation return assistance for the deformation part 31), so that the deformation part 31 is less prone to fatigue and aging. Therefore, compared with the valve in the prior art, the valve has longer service life and better non-return effect.

The sanitary ware comprises a closestool, wherein the anti-siphon valve 10 in the embodiment is arranged on a connecting waterway between the closestool and a water supply source. Specifically, a water inlet pressure stabilizing valve 20 is arranged on the connecting water path, and the valve 10 is arranged in the water inlet end of the water inlet pressure stabilizing valve 20, as shown in fig. 6.

In this embodiment, the toilet is specifically an intelligent toilet, but is not limited thereto, and a common toilet is also applicable. The water inlet pressure stabilizing valve is arranged on a base of an electronic cover of the intelligent closestool.

When water enters, the water flows to the water inlet end of the water inlet pressure stabilizing valve 20 and flows in from the fluid inlet 11 of the valve 10, the valve core deformation part 31 of the valve deforms under the action of the gravity and the impact force of the water flow, so that the slit 311 is opened, the water flows to the fluid outlet 21 of the valve through the slit 311 as shown in fig. 7 (the arrow in the figure indicates the water flow direction), and finally flows into the water tank of the intelligent closestool to replenish the water tank. When water inflow is stopped, the valve deformation portion 31 is elastically restored to close the slit 311, thereby preventing water from passing through the slit 311 and functioning as a check function. When the water supply source stops supplying water, negative pressure occurs in the water supply pipeline, the water inlet end of the water inlet pressure stabilizing valve 20 is also in a negative pressure state, and under the action of the atmospheric pressure, the valve core deformation part 31 of the valve can continuously deform along the pressure direction of the pressing block 22 to the deformation part 31, so that the slit 311 is tightly closed, the backflow of water is limited, and the anti-siphon effect is achieved.

Example two

Referring to fig. 8 to 13, an anti-siphon valve according to the present invention is different from the first embodiment in that: the tail end of the deformation portion 31 is outwardly provided with an extension portion, the extension portion includes two thin sheets 33, the two thin sheets 33 are oppositely arranged and located at two sides of the width direction of the slit, and the distance between the tail ends of the two thin sheets 33 is smaller than the width of the slit (besides, the distance between the two thin sheets 33 can also be matched with the width of the slit). The two sheets 33 are connected to each other at both sides, but not limited thereto, and the two sheets 33 may be separated from each other.

In this embodiment, the extending portion is in an inverted T shape (except that the extending portion may also be in an i shape), the valve housing is provided with two ribs 25, and the two ribs 25 are clamped one by one at the inwardly recessed portions on the two sides of the extending portion. Specifically, the two ribs 25 are disposed at the bottom end of the lower casing 2, and the two ribs 25 are parallel to each other.

During assembly, the valve core 3 is firstly sleeved on the lower shell 2, the extending part of the valve core is firstly twisted by 45 degrees, the diagonal line of the square shape mediated by the two convex ribs 25 obliquely passes through the lower shell 2 and then is laid flat, and the extending part rebounds to the perpendicular bisector perpendicular to the convex ribs 25 due to the resilience force of the two sheets 33.

Because the thin sheet 33 is soft, the thin sheet can be quickly adsorbed together under the viscous force of water, so that the water is prevented from flowing backwards, and the reverse water seal of the slit is increased. When water flows in the forward direction, the two thin sheets 33 are squeezed apart by water pressure, normal water discharge is realized, and since the thin sheets 33 are soft, the water pressure loss is small. When negative pressure of the water path is large, the valve core tends to be reversely extruded towards the fluid inlet, at the moment, the extending part is clamped between the two convex ribs 25, and the convex ribs 25 provide a pulling force for the extending part to prevent the deformation part 31 of the valve core from turning upwards. Thus, the valve of the present invention can withstand a large siphon negative pressure. In other embodiments, the pre-compression structure is a spring.

The above embodiments are only used to further illustrate the anti-siphon valve and the sanitary ware using the same, but the present invention is not limited to the embodiments, and any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention fall within the protection scope of the technical solution of the present invention.

Claims

1. A valve capable of preventing siphonage comprises a valve casing and a valve core, wherein a fluid inlet and a fluid outlet are respectively arranged at two ends of the valve casing, the valve core is arranged in a valve cavity of the valve casing, the valve core is provided with a wedge-shaped deformation part facing the fluid outlet, and a slit capable of being opened and closed is arranged at the tail end of the deformation part; the method is characterized in that: two pre-compaction structures are arranged in a valve cavity of the valve shell and are pre-compacted on the outer side surfaces of the two inclined walls of the deformation part one by one; the tail end of the deformation part is outwards provided with an extension part, and the valve shell is provided with a convex rib for clamping the extension part; the extending part comprises two thin sheets which are oppositely arranged and positioned at two sides of the slit in the width direction, and the distance between the tail ends of the two thin sheets is smaller than the width of the slit; the extension part is I-shaped or inverted T-shaped, the valve casing is provided with two convex ribs, and the two convex ribs are clamped at the inwards-concave positions on the two sides of the extension part one by one.

2. The anti-siphonic valve according to claim 1, wherein: the pre-compaction structure is a pressing block, the pressing block is provided with an inclined plane matched with the corresponding inclined wall of the deformation part, and the inclined plane is abutted against the outer side face of the corresponding inclined wall of the deformation part.

3. The anti-siphonic valve according to claim 1, wherein: the pre-compression structure is a spring plate.

4. The anti-siphonic valve according to claim 1, wherein: the valve shell comprises an upper shell provided with the fluid inlet and a lower shell provided with the fluid outlet, and the upper shell and the lower shell are connected and matched and enclose the valve cavity; the pre-compression structure is disposed in the lower case.

5. The anti-siphonic valve according to claim 4, wherein: the valve core is also provided with an annular boss integrally connected with the head end of the deformation part, the outer diameter of the annular boss is larger than that of the deformation part, the deformation part is positioned in the lower shell, and the annular boss is limited between the upper shell and the lower shell.

6. The anti-siphon valve according to claim 4 or 5, wherein: the cooperation has an assembly guide structure between case and the valve casing, this assembly guide structure including set up in a plurality of guide lugs of deformation portion lateral surface with set up in a plurality of guide slots of inferior valve internal face, guide lug and guide slot are pegged graft the cooperation one by one.

7. The anti-siphonic valve according to claim 1, wherein: the two sheets are separated from each other, or the two sides of the two sheets are connected one by one.

8. The utility model provides a sanitary ware, includes the closestool, its characterized in that: an anti-siphon valve according to any one of claims 1 to 7 is installed on a connection waterway between the toilet and a water supply source.

9. The sanitary ware according to claim 8, wherein: and a water inlet pressure stabilizing valve is arranged on the connecting water path, and the valve is arranged in the water inlet end of the water inlet pressure stabilizing valve.