CN207701851U - Check (non-return) valve - Google Patents
Check (non-return) valve Download PDFInfo
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- CN207701851U CN207701851U CN201721790419.7U CN201721790419U CN207701851U CN 207701851 U CN207701851 U CN 207701851U CN 201721790419 U CN201721790419 U CN 201721790419U CN 207701851 U CN207701851 U CN 207701851U
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Abstract
The utility model is related to a kind of check (non-return) valves, including mounting portion, forced section and the switch portion set gradually from top to bottom；Forced section includes rake and canister portion；Rake includes two first inclined surface for being oppositely arranged and being obliquely installed, and the spacing between two first inclined surface reduces along basipetal direction；Canister portion includes two sides being oppositely arranged, and two sides are along the circumferential direction extended and connected toward the opposite sides side of another first inclined surface respectively from the opposite sides side of wherein one first inclined surface and formed；Switch portion includes two switch plates being oppositely arranged, and two switch plates are axially extended to form by the bottom terminal ends of described two first inclined surface along check (non-return) valve down respectively；Two switch plates in switch portion when closure are bonded to each other docking, and two switch plates in switch portion when unlatching are separated from each other.Thus while the utility model can be such that its switch portion is kept closed, there is drainage performance appropriate, and there is stronger repellence for the positive pressure for the side that flows down.
Description
Technical field
The utility model is related to a kind of check (non-return) valves being installed in drainage piping.
Background technology
In the drainage equipment of the needs such as washbowl, sink, bathtub draining, match equipped with waste water is discharged into dirty draining
Pipe.
If the dirty side of drainage piping and drainage equipment connects, foul smell, the pest etc. of the side that flows down can pass through row
Water piping adverse current is got in.For this reason, it may be necessary to which setting can prevent foul smell, pest etc. from dirty side adverse current in drainage piping
To the drain valve or check (non-return) valve of drainage piping upstream side.
The waste water flowed by drainage equipment can be put aside in a segment limit of drainage flow path, be consequently formed inside drain valve
Construction with valve function prevents foul smell, pest adverse current.Wherein, the waste water to be got up by savings is known as " water shutoff ".
But if drain valve does not use for a long time or it flows down side when there is negative pressure, the internal above-mentioned envelope formed
Water will be lost in because of evaporation or due to negative pressure, positive pressure occurs in its side that flows down, reduced so as to cause water shutoff, drain valve is made to lose valve
Door function, and there is a situation where so-called " broken seals ".In addition, since drain valve is such as the piping (calling in the following text " snorkel ") of ventilation,
So drain valve will not substantially use in the place not drained.
And in order to solve the problems, such as that drain valve exists, Japanese publication number is that the patent document of special open 2003-207062 is public
A kind of check (non-return) valve has been opened, and above-mentioned drain valve is substituted by installing check (non-return) valve in drainage piping.The check (non-return) valve has switch
Portion, by the switch portion closure formed prevent foul smell, pest adverse current construction.Due to not using the envelope of above-mentioned draining valve type
Water, so will not cause to lose valve function because of broken seal.
But there are still problems with for check (non-return) valve disclosed in the patent document：When the upper side of check (non-return) valve and dirty one
In the state of being not affected by positive pressure or negative pressure, switch portion must remain turned-off for side, however it is highly difficult so that it is remained turned-off.
That is, if reinforcing the closure of switch portion in order to be kept closed, the fluid of upper side, which is discharged into dirty side, to be become
It is difficult, it is ensured that appropriate drain discharge will become difficult.
In addition, when check (non-return) valve from dirty side by positive pressure when, as switch portion to be made is not easy to be opened, then being directed to
The positive pressure for flowing down side needs certain repellence, and in order to ensure there is repellence, simple makes switch portion be not easy to be beaten
Open, but can cause upper side fluid cannot be unimpeded be discharged into it is dirty.
Utility model content
To solve the disadvantage that the above-mentioned prior art and deficiency, the utility model provide a kind of check (non-return) valve, its switch can be made
While portion is kept closed, there is drainage performance appropriate, and there is stronger repellence for the positive pressure for the side that flows down.
A kind of check (non-return) valve, including the mounting portion, forced section and the switch portion that set gradually from top to bottom；
The forced section is extended to form down by the mounting portion bottom periphery, and it includes rake and canister portion；It is described
Rake includes two first inclined surface for being oppositely arranged and being obliquely installed, spacing between described two first inclined surface along on toward
Under direction reduce；Cartridge includes two sides being oppositely arranged, and two sides are by wherein one first inclined surface
Opposite sides side along the circumferential direction extends and connects to be formed toward the opposite sides side of another first inclined surface respectively；
The switch portion includes two switch plates being oppositely arranged, and two switch plate is respectively by described two first inclined surface
Bottom terminal ends axially extend to form down along check (non-return) valve；Two switch plates in switch portion when closure are bonded to each other docking, open
When switch portion in two switch plates be separated from each other.
Thus the utility model has suitable through the above technical solutions, while its switch portion can be made to be kept closed
When drainage performance, and for flow down side positive pressure have stronger repellence.
Further, the mounting portion is tube structure, and the internal face of bore is equipped with an installation groove, for being arranged with outside
The attached portion of water piping is mutually clamped.By limiting herein, the installation operation of check (non-return) valve is facilitated.
Further, the internal face top periphery of the bore of the mounting portion partially or fully toward the internal diameter direction of mounting portion to
The internal face bottom end periphery of the projecting inward bore for forming the first clamping part and the mounting portion is partially or fully in mounting portion
The second clamping part of the inwardly projecting formation in diameter direction；Described in interval between first clamping part and second clamping part is formed
Installation groove, and first clamping part can be strutted by the attached portion of externally drained piping and be deformed；Check (non-return) valve passes through
After mounting portion is installed on the attached portion, two switch plate can be such that it mutually pastes due to the deformation of the first clamping part
The power of conjunction.By limiting herein, is conducive to enhance the adhesive force between two switch plates, further prevents the generation of check (non-return) valve inverse
Stream, even if switch portion can have gap, but as long as after drainage piping, is opened before check (non-return) valve is not installed on drainage piping
Gap in the portion of pass will be eliminated.
Further, the rake further includes two second inclined surface that angle is axially formed with check (non-return) valve, and described two second
Inclined surface is corresponded with described two first inclined surface, and every 1 second inclined surface is the first corresponding inclined surface bottom end and opens
Junction between pass portion top, and its angle between check (non-return) valve axial direction be less than the first corresponding inclined surface with it is non-return
Angle of the valve shaft between.By limiting herein, be conducive to the positive pressure for improving the drainage performance of check (non-return) valve and making its side that flows down
With stronger repellence.
Further, the junction between every 1 first inclined surface and the second corresponding inclined surface is bending section, described
Axis of the nock of bending section backwards to check (non-return) valve；Described two second inclined surface are separated from each other setting by bending section, and form the
Two switch portions；And two switch plate forms first switch portion；When in forced section by the pressure of upper side, described first opens
Pass portion and the second switch portion are all in open state；When outside forced section by the pressure of dirty side, the first switch portion
It is in closed state in open state and the second switch portion；And forced section is when being not affected by any pressure, the first switch portion
It is in open state in closed state and the second switch portion.By limiting herein so that by dirty side in forced section
Positive pressure power closer to check (non-return) valve axis, and due to two second inclined surface dock to increase the closing face of switch portion
Product, further prevents adverse current, has better anti-reverse fluidity.
Further, each side is equipped at least rigid element for being parallel to check (non-return) valve axial direction.By limiting herein, have
Conducive to the rigidity of the canister portion of check (non-return) valve is enhanced using rib, even if the dirty side of check (non-return) valve forms very strong positive pressure as a result,
When, be also possible to prevent check (non-return) valve occur expect outside deformation.
Further, each rigid element is the rib of rigid.Limiting herein further prevents check (non-return) valve to expect
Outer deformation.
Further, the height where each rigid element from the top of the first inclined surface extends to and the first inclined surface down
The position that lower part connects, and the second inclined surface is not arrived at.By limiting herein, on the one hand so that having the portion of rib in check (non-return) valve
The axial direction divided has stronger rigidity, therefore can prevent from deforming because the side that flows down is by positive pressure, and on the other hand, make
Obtaining in check (non-return) valve does not have the rigidity of the part of rib to be reduced, so as to drain well.
Further, the mounting portion, forced section and switch portion are integrally formed.By limiting herein, be conducive to enhance non-return
The structural compactness of valve, and ensure that harmony and balance when all parts work.
In order to better understand and implement, according to the present invention will be described in detail below with reference to the accompanying drawings.
Description of the drawings
Fig. 1 is the dimensional structure diagram of the utility model check (non-return) valve；
Fig. 2 a are the overlooking structure diagram of the utility model check (non-return) valve；
The A-A ' of check (non-return) valve in Fig. 2 b Fig. 2 a is to sectional view；
Fig. 3 a are the positive structure diagram of the utility model check (non-return) valve；
Fig. 3 b are the side structure schematic view of the utility model check (non-return) valve；
Fig. 4 a are the partial cutaway view of the attached portion of the drainage piping for installing the utility model check (non-return) valve；
Fig. 4 b are the present invention looks up structural representation of the attached portion in Fig. 4 a；
Fig. 5 is that the utility model check (non-return) valve is installed on the sectional view after drainage piping；
Fig. 6 is the use state sectional view that the utility model check (non-return) valve is equipped in air-conditioner drain piping；
Fig. 7 is facing upward in the case where its switch portion is closed after the utility model check (non-return) valve is mounted on drainage piping
Depending on structural schematic diagram；
Fig. 8 is bowing in the case where its switch portion is closed after the utility model check (non-return) valve is mounted on drainage piping
Depending on structural schematic diagram；
Fig. 9 is standing in the case where its switch portion is closed after the utility model check (non-return) valve is mounted on drainage piping
Body structural schematic diagram；
Figure 10 is facing upward in the case where its switch portion is in the open state after the utility model check (non-return) valve is mounted on drainage piping
Depending on structural schematic diagram；
Figure 11 is bowing in the case where its switch portion is in the open state after the utility model check (non-return) valve is mounted on drainage piping
Depending on structural schematic diagram；
Figure 12 is standing in the case where its switch portion is in the open state after the utility model check (non-return) valve is mounted on drainage piping
Body structural schematic diagram figure；
Figure 13 is sectional view of the utility model check (non-return) valve in the positive apparent direction under its switch portion is closed；
Figure 14 be the utility model variant embodiment 6) in check (non-return) valve structural schematic diagram；
Figure 15 is that the A-A ' of the check (non-return) valve in Figure 14 is cutd open to schematic diagram.
Specific implementation mode
Referring to the drawings, the check (non-return) valve of the utility model is illustrated.It is illustrated below only to facilitate to specific
The content of the understanding of embodiment, and it is without being limited thereto to the understanding of the utility model.The check (non-return) valve of the utility model, mounted on wash
In the drainage piping of the drainage equipment (not shown) connection drained when the uses such as washbowl, sink, bathtub, or installation
In the snorkel for ventilation.
The utility model check (non-return) valve is internally provided with drainage flow path, and it is made of silica gel or other flexible materials.
It please referring to Fig.1 and Fig. 2, the top surface structure outer profile of the utility model check (non-return) valve 1 is oval, and side structure is in infundibulate, and
The check (non-return) valve 1 includes mounting portion 13, forced section and the switch portion 3 set gradually from top to bottom.
Referring to Fig. 6, Fig. 6 is the use state sectional view for being equipped with the utility model check (non-return) valve in air-conditioner drain piping；
That is, the utility model check (non-return) valve 1 is installed in drainage piping by the realization of its mounting portion 13, Fig. 2 a and figure are please referred to
2b, in the present embodiment, the mounting portion 13 are the smaller cylinder of height, and top surface is in flat pattern.The mounting portion 13
The internal face top periphery of bore is partially or fully toward the internal diameter direction of mounting portion 13 inwardly (namely toward vertical and close to check (non-return) valve
The direction of 1 axis) protrusion forms the first clamping part 131, and the internal face bottom end periphery of bore is partially or fully toward mounting portion
13 internal diameter direction the second clamping part 132 of inwardly projecting formation.First clamping part 131 and second clamping part 132 it
Between interval form the installation groove 133 of loop configuration.When then the check (non-return) valve of the utility model 1 being installed in drainage piping,
By the way that the attached portion 15 in drainage piping to be extend into from the top of the first clamping part 131 in installation groove 133, until being pacified
Dress portion 15 is sticked in the installation groove 133, that is, attached portion 15 is by first clamping part 131 and described at this time
Two clamping parts 132 are clamped, as shown in Figure 5.
Preferably, first clamping part 131 is the protrusion of loop configuration and second clamping part 132 is ring junction
The protrusion of structure, and the internal diameter of second clamping part 132 is 1 one-tenth or so smaller than the internal diameter of the installation groove 133.
Please refer to Fig. 2 and Fig. 3, the forced section is the draining cavity of check (non-return) valve 1, from mounting portion bottom periphery toward downward
It stretches to be formed, and it includes rake 2 and canister portion 5.
The rake 2 include in second clamping part 132 towards the inner wall circumferential surface bottom end phase that mounting portion 13 is axial
Two first inclined surface 21 connect.Described two first inclined surface 21 are oppositely arranged in the opposite of the bottom end of second clamping part 132
Both sides, and setting is a certain included angle with the axial direction of mounting portion 13, it will be appreciated that spacing between two first inclined surface 21 is from upper
It is gradually decreased as zero down, that is, moved closer to from top to bottom between two first inclined surface 21, and under two first inclined surface 21
It is connect with the switch portion 3 after being mutually butted between portion.
Cartridge 5 include in second clamping part 132 towards the inner wall circumferential surface bottom end that the mounting portion 13 is axial
Two sides to connect.Two sides are oppositely arranged in the other opposite sides of the bottom end of second clamping part 132, and
Side seals of the opposite sides side of any side respectively with the first inclined surface adjacent thereto connect, that is, described two
Side and two first inclined surface along the second clamping part 132 circumferencial direction and according to sequence --- a wherein side, its
In one first inclined surface, another side, another first inclined surface be sequentially arranged, and be interconnected to form between any two with connecting
The forced section of continuous and closed side.On the other hand, two sides are by the phase of wherein one first inclined surface
Both sides side is along the circumferential direction extended toward the opposite sides side of another inclined surface respectively and connects formation.
Specifically, the switch portion 3 includes two switch plates for being oppositely arranged and being bonded to each other；Two switch plate and axial direction
It is parallel, and connect respectively with the bottom terminal ends of described two first inclined surface 21, it is understood that be, two switch plate respectively by
The bottom terminal ends of described two first inclined surface 21 are extended to form toward lower section in an axial direction.Two switch plate can be pressed by upper side
Power and be separated from each other, realize switch portion 3 unlatching.Two switch plates herein are first switch portion 31.
As a result, when check (non-return) valve 1 to be mounted in drainage piping, when being drained, water can be from the cylinder of mounting portion 13
Hole flows into, and enters in forced section, and when the gravity of water reaches a certain size, two switch plate will be made due to the gravity of water
With and deform and be softened so that switch portion 3 open, to realize draining.After draining, two switch plate
It can be again bonded due to the effect of two first inclined surface 21, realize the closing of switch portion 3.
To further increase the drainage performance of check (non-return) valve 1 and making the positive pressure of its side that flows down that there is stronger repellence, make
For a kind of more preferably technical solution, the rake 2 further includes being in angle and two second flat inclined surface 22 with axial,
That is, the rake 2 is that there are two sloping portions for tool, one of sloping portion refers to two first inclined surface 21, another
A sloping portion refers to respectively with 21 one-to-one two second inclined surface 22 of described two first inclined surface (hereinafter, rake
The structure for being divided to 2 two first inclined surface 21 of finger and two second inclined surface 22 to be collectively formed).
Specifically, every 1 first inclined surface 21 is proximate to the inclined surface of aforementioned mounting portion 13 (top) side, relative to only
Against the axially inclined of valve 1.Every 1 second inclined surface 22 is extended by corresponding 21 bottom end of the first inclined surface, close to switch
Portion 3 (lower section) side is pushed up that is, every 1 second inclined surface 22 is the bottom end of the first corresponding inclined surface 21 and switch portion 3
Junction between end, and every one second inclined surface 22 is relative to the axially inclined of check (non-return) valve 1.
Preferably, more inclination of every 1 first inclined surface 21 than the second corresponding inclined surface 22 relative to axial direction,
Angle (acute angle portion) between i.e. every one first inclined surface 21 and axial direction is than the second corresponding inclined surface 22 and axial direction
Between angle (acute angle portion) it is big.
Further, the junction between every 1 first inclined surface 21 and the second corresponding inclined surface 22 is bending section 8.
The bending section 8 is the part having a common boundary between every 1 first inclined surface 21 and the second corresponding inclined surface 22, the nock back of the body
It is the axis backwards to check (non-return) valve 1 to the axis of check (non-return) valve 1 namely its bending direction.By the effect of bending section 8, can make
By the positive pressure of dirty side closer to central shaft (i.e. the axis of check (non-return) valve 1) in forced section.Then when two bending sections 8 are mutual
Close, when making to dock between two second inclined surface, 22 bottom end, two second inclined surface 22 can play the effect of switch, claim here
Two second inclined surface 22 play a role as second switch portion 32.That is, described two second inclined surface 22 are mutual by bending section 8
It is separately positioned, and form second switch portion 32；And two switch plate forms first switch portion 31.When in forced section by upstream
When the pressure of side, when thering is flow to flow into forced section such as upper side, the first switch portion 31 and the second switch portion
32 be all in open state.When outside forced section by the pressure of dirty side, the first switch portion 31 is in open state and institute
It is in closed state to state second switch portion 32；And forced section is when being not affected by any pressure, i.e., without upper side and dirty side
When pressure is applied to forced section, the first switch portion 31 is in open state in closed state and the second switch portion 32.
Then at this time, it is believed that the switch portion 3 includes that (mentioned below opens for first switch portion 31 and second switch portion 32
Pass portion 3 be collectively formed all referring to first switch portion 31 and second switch portion 32 after structure).
When the upstream of check (non-return) valve and flow down all not by positive pressure or suction function when (hereinafter referred to as " usually "), as Fig. 2 a,
Shown in Fig. 2 b, Fig. 3 a and Fig. 3 b, first switch portion 31 is from the docking location (bottom end of the second inclined surface 22) of rake 2 toward tilting
The downward vertical of the docking location in face 2 and set.I.e., it is possible to be interpreted as, first switch portion 31 is to flatten cylinder one end, makes cylinder
The structure that face overlaps after the plane by swaging at two fittings with cylinder axis.As long as the first switch portion 31 from inside (on
Stream side) it is not affected by positive pressure, it will be kept closed, to prevent foul smell, pest etc. from dirty side adverse current.It is described
Second switch portion 32 (i.e. two second inclined surface 22), be from the upper end in the first switch portion 31 extended part upwards, usually,
It is the state detached between opposite face and face in second switch portion 32, but by the positive pressure of dirty side when will close
It closes, is in closed state.In the present embodiment, when flowing down side by positive pressure, second switch is served as in two second inclined surface 22
Portion 32 plays a role.
To enhance the crushing resistance of check (non-return) valve 1, as a kind of more preferably technical solution, cartridge 2 is equipped with and is parallel to only
A 1 axial at least rigid element 6 of inverse valve.In this embodiment, it is preferred that being designed with spaced two on each side
Rigid element 6 namely canister portion 2 are equipped with 4 rigid elements altogether.
In the present embodiment, each rigid element is preferably the rib of rigid.
As shown in Figure 1 to Figure 3, each rib 6 is parallel with the axial direction of check (non-return) valve 1 and sets and have certain thickness structure,
It has higher rigidity compared with the structure of the other parts of check (non-return) valve 1, and each rib 6 is especially to acting on check (non-return) valve 1
Axis, which upwards pressure, has very high crushing resistance.
Each rib 6 is only defined in canister portion 5, and where each rib 6 from 21 tops of the first inclined surface, that is, 2 top of rake
Height and position extend to the position to connect with 21 lower part of the first inclined surface down, and do not reach the second inclined surface 22.
That is, as shown in Figure 3a and Figure 3b shows, in the region X equipped with rib 6, the axis of the part in region X in check (non-return) valve 1
It to stronger rigidity, therefore can prevent from deforming because the side that flows down is by positive pressure, on the other hand, from 6 bottom of rib
The region Y between 3 bottom end of switch portion is held, has adjusted its rigidity due to being not provided with rib 6 so that be in check (non-return) valve 1
The part of region Y can be very good to drain.Since rib 6 does not extend to the second inclined surface 22, so two second inclined surface 22 (
Two switch portions 32) it is located in above-mentioned zone Y.Therefore, when positive pressure occurs for dirty side, rib 6 can't restrain two the
The fitting of two inclined surface 22 is the closure in second switch portion 32.
As shown in Fig. 2 a, Fig. 2 b, Fig. 3 a, Fig. 3 b and Fig. 7, although rib 6 is located at the upper of 31 both ends end of first switch portion
Side, but the interface 4 of rib 6 and rake 2 is not in the same plane, but clip interface 4 and set, wherein docking
Face 4 indicates the face that is bonded to each other in two switch plates, and is indicated in fig. 3 a with interface 4 in the same plane with chain-dotted line
Face.Therefore, rib 6 is to be set along the plane for clipping interface 4, and set up 2 one group separately in the both ends end of switch portion 3,
It is equipped with 4 altogether.
Preferably, the mounting portion 13 in check (non-return) valve 1, forced section and switch portion 3 are integrally formed, and each in mounting portion 13
Partly, the various pieces in forced section and the various pieces in switch portion 3 are all integrally formed.
As shown in Figure 5 and Figure 6, mounting portion 13 is nested by its installation groove 133 is installed on being mounted for drainage piping
Around portion 15.Wherein, as shown in figure 4, attached portion 15 is pressed from both sides in terms of bottom surface in positive circular ring shape, first of outer diameter than mounting portion 13
The internal diameter of the internal diameter and the second clamping part 132 of holding portion 131 is big.Therefore, after check (non-return) valve 1 is mounted, attached portion 15 presses against
For mounting portion 13 while side is expanded from the inside, the medial surface of the installation groove 133 of mounting portion 13 is outer with attached portion 15
The through-hole of side pairing, the first clamping part 131 of mounting portion 13 forms circular outward.At this point, as shown in figure 5, switch
Between the interface in portion 3 pressure is subjected to along direction close to each other.The first clamping part 131 is indicated in Fig. 5 to install
Deformation direction in 13 installation process of portion and along with the deformation, is applied to the direction of the pressure in switch portion 3.Therefore, only
Inverse valve 1 is mounted on before attached portion 15, even if switch portion 3 is maintained at closed state, gap is still had at switch portion 3, but
As long as after check (non-return) valve 1 is installed in attached portion 15, switch portion 3 strict will be closed, and above-mentioned gap is not present.
As shown in Figure 7 to 9, attached portion 15 is omitted in Fig. 7 to Fig. 9, only describes and is pacified mounted on drainage piping
The state of check (non-return) valve 1 behind 15 periphery of dress portion, after mounting portion 13 is mounted on attached portion 15, the top surface structure of check (non-return) valve 1
Outer profile at circular, (usually) when the upper side of check (non-return) valve 1 is flowed into without draining, and no pressure acts on, switch portion 3 is kept
In closed state.But in other cases, other actions can occur for check (non-return) valve 1, such as：
When drainage equipment drains, draining flows into check (non-return) valve 1 by drainage piping.Flow into the draining in check (non-return) valve 1
Because the dead weight of the flow of water or draining presses (positive pressure) to first switch portion 31, to open first switch portion 31.At this point, first
31 a period of time of switch portion is in the state of valve opening, and the flowing water in check (non-return) valve 1 is discharged into dirty by first switch portion 31.
At this point, as shown in Figure 10 to Figure 12, being based on above-mentioned construction, the fashionable first switch portion 31 of blowdown stream is opened in valve
State, but because the utility model is only equipped with rib 6 in cylinder side 5, deform with the opened/closed in first switch portion 31
Rake 2 and first switch portion 31 generation of the action will not be prevented because of rib 6.When valve is opened, with rake 2
Although orthogonal canister portion 5 can also deform, set since rib 6 is parallel relative to the axial direction of check (non-return) valve 1, with inclination
The orthogonal direction in portion 2 does not have very strong rigidity (compared with axis direction) then, therefore rib 6 will not hinder valve to open.
Further, check (non-return) valve 1 is when valve opens (i.e. switch portion 3 opening), in rake 2 two opposite inclined surface it
Between be separated from each other and deform, and deform towards direction close to each other between opposite two parts of 3 bottom end of switch portion.Cause
This, as shown in Figure 10 to Figure 12, the inside of canister portion 5 is in the surface of the opposite end end of 3 bottom end of switch portion, from bottom surface direction
It sees, as shown in Figure 10, maximum journey occurs for the part in the switch portion 3 opened at this time when it is closed on the extended line of interface 4
The deformation of degree, as previously described, because rib 6 is not arranged here, so certain elasticity can be ensured, to which switch will not be interfered
The opening in portion 3.
After drainage equipment drains, switch portion 3 restores closed state again by the elastic force of itself, to prevent flowing down
The adverse current such as side foul smell, pest.
On the other hand, when positive pressure power of the check (non-return) valve 1 by dirty side, which will not open toward pushing
The direction effect that pass portion 3 opens, therefore switch portion 3 stills remain in closed state.
In addition, when the utility model check (non-return) valve 1 is failed to expect the strong positive pressure of deformation extent by traditional check (non-return) valve,
As shown in figure 13, the central shaft of bending section 8 meeting towards the check (non-return) valve 1 of the check (non-return) valve 1 of the utility model is close, two second inclined surface
22 (second switch portions 32) are mutually butted, to increase the closed area of switch portion 3 namely the area of interface 4, even if then by
Check (non-return) valve 1 to the strong positive pressure, the utility model can also prevent backflow phenomena well.
Since canister portion 5 is equipped with rigid element rib 6, even if the side that flows down is by strong positive pressure, check (non-return) valve 1 will not occur more
Serious deformation.At this point, it has been observed that since rib 6 does not arrive at second switch portion 32 (the second inclined surface 22), so second
The closed action of switch portion 32 will not be by the obstruction of rib 6.
That is, when the dirty side of the check (non-return) valve 1 of the utility model is by strong positive pressure, second due to being located at region Y opens
Pass portion 32 is closed and enhances non-return effect, and region X makes check (non-return) valve 1 be generated just in dirty side because being equipped with rib 6
There is stronger repellence on the direction (axis direction) of pressure, the expected above deformation will not occur.
Therefore, the utility model is such a structure：Usually, when check (non-return) valve 1 is in the state of valve opening, due to
The second switch portion 32 that its side that flows down is closed when being equipped with by positive pressure, so good drainage performance can be usually kept, and
Adverse current can be prevented well again when the side generation positive pressure that flows down.
In addition, the check (non-return) valve 1 of the utility model can also be used as the use of the inlet valve on drainage piping, that is, remove
Except drainage piping, the check (non-return) valve of the utility model also can be used in the gas ventilations structure such as such as air-conditioning.At this point, check (non-return) valve
1 not only by the positive pressure of dirty side, also can be by the negative pressure of upper side, however even if check (non-return) valve 1 is by upper side
Negative pressure, since its rigid element rib 6 is parallel with axis direction, the deformation outside expectation will not occur for check (non-return) valve 1, and second opens
The closure in pass portion 32 can also prevent adverse current.
In addition, the utility model also has other variant embodiments, such as：
1) in above-described embodiment, two first inclined surface and two second inclined surface are all planes, thus two be oppositely arranged incline
It can be bonded well when being closed between inclined-plane, but the utility model is without being limited thereto.For example, rake 2 can be arc-shaped,
Can be made of the first inclined surface, the second inclined surface, the face of third inclined surface three.At this point, in rake 2, it is located at bottom
Inclined surface play a role as second switch portion 32.Certainly, rake 2 is constituted by three or more faces also may be used.
2) in terms of the front of check (non-return) valve 1 (in terms of positive section), the left and right sides of check (non-return) valve can be set as non-
Symmetrical structure, or the angle of inclination of two inclined surface being oppositely arranged in rake 2 is set as different.
3) in above-described embodiment, the opposite sides face of check (non-return) valve 1 is each provided with rake 2, but rake 2 can be only non-return
The wherein side of valve 1 is arranged.
4) in above-described embodiment, the rib 6 being arranged in canister portion 5 plays a role as rigid element, and this variant embodiment
In installation position, the shape, structure of rigid element etc. have no strict demand.For example, the iron core of hard can be added in canister portion
As rigid element.
5) in above-described embodiment, the internal diameter of the second clamping part 132 of mounting portion 13 is 1 one-tenth smaller than the internal diameter of installation groove 133
Left and right, but the size of the internal diameter of the internal diameter and installation groove 133 of the second clamping part 132 can according to the size of check (non-return) valve 1, shape,
Highly, material etc. is suitably adjusted.Therefore, the mounting portion 13 of check (non-return) valve 1 its top surface when being not installed on drainage piping is tied
The outer profile and Internal periphery of structure can be circulars, and the attached portion of drainage piping can be pancake.Mounting portion 13 and by
Both mounting portions 15 also all can be pancake.In addition, rib can be set in attached portion 15, deformed by mounting portion 13 by the rib
Deng variously-shaped rib can be selected, variously-shaped mounting portion also can be selected, as long as can realize that it is mounted on attached portion
It is upper.
6) change the structure of rigid element 6, that is, rigid element can also be the rigid body except rib shapes, such as scheme
Shown in 14 and Figure 15, rigid element 6 ' is made of the metal wire in the side wall where being built in cylinder side in check (non-return) valve 15, i.e., this
When, it is inserted into the side wall in check (non-return) valve 1 where cylinder side 5 by the rigid element 6 ' that metal wire is constituted.
Above-described embodiments merely represent several embodiments of the utility model, the description thereof is more specific and detailed,
But therefore it can not be interpreted as the limitation to utility model patent range.It should be pointed out that for the common skill of this field
For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to
The scope of protection of the utility model.
Claims (9)
1. a kind of check (non-return) valve, it is characterised in that：Including the mounting portion, forced section and switch portion set gradually from top to bottom；
The forced section is extended to form down by the mounting portion bottom periphery, and it includes rake and canister portion；The inclination
Portion includes two first inclined surface for being oppositely arranged and being obliquely installed, and the spacing between described two first inclined surface is along basipetal
Direction reduces；Cartridge includes two sides being oppositely arranged, and two sides are opposite by wherein one first inclined surface
Both sides side along the circumferential direction extends and connects to be formed toward the opposite sides side of another first inclined surface respectively；
The switch portion includes two switch plates being oppositely arranged, and two switch plate is respectively by the bottom end of described two first inclined surface
End axially extends to form down along check (non-return) valve；Two switch plates in switch portion when closure are bonded to each other docking, when unlatching
Two switch plates in switch portion are separated from each other.
2. check (non-return) valve according to claim 1, it is characterised in that：The mounting portion is tube structure, the inner wall of bore
Face is equipped with an installation groove, for being mutually clamped with the attached portion of externally drained piping.
3. check (non-return) valve according to claim 2, it is characterised in that：The internal face top periphery office of the bore of the mounting portion
Portion or all toward the internal face bottom of the inwardly projecting bore for forming the first clamping part and the mounting portion of the internal diameter direction of mounting portion
Hold periphery partially or fully toward the internal diameter direction of mounting portion the second clamping part of inwardly projecting formation；First clamping part and described
Interval between second clamping part forms the installation groove, and first clamping part being mounted by externally drained piping
Portion struts and deforms；
After check (non-return) valve is installed on the attached portion by mounting portion, two switch plate can due to the first clamping part deformation and
By the power for making it be bonded to each other.
4. according to claims 1 to 3 any one of them check (non-return) valve, it is characterised in that：The rake further includes and check (non-return) valve
It is axially formed two second inclined surface of angle, described two second inclined surface are corresponded with described two first inclined surface, and every 1 the
Junction of two inclined surface between the first corresponding inclined surface bottom end and switch portion top, and itself and check (non-return) valve axial direction
Between angle be less than angle between the first corresponding inclined surface and check (non-return) valve axial direction.
5. check (non-return) valve according to claim 4, it is characterised in that：Every 1 first inclined surface and corresponding second tilts
Junction between face is bending section, the axis of the nock of the bending section backwards to check (non-return) valve；
Described two second inclined surface are separated from each other setting by bending section, and form second switch portion；And the two switch plates shape
At first switch portion；
When in forced section by the pressure of upper side, the first switch portion and the second switch portion are all in open state；
When outside forced section by the pressure of dirty side, the first switch portion is in open state and the second switch portion in closure
State；And forced section is when being not affected by any pressure, the first switch portion is in closed state and the second switch portion in opening
State.
6. check (non-return) valve according to claim 4, it is characterised in that：Each side, which is equipped with, is parallel to check (non-return) valve axial direction extremely
A few rigid element.
7. check (non-return) valve according to claim 6, it is characterised in that：Each rigid element is the rib of rigid.
8. the check (non-return) valve described according to claim 6 or 7, it is characterised in that：Top of each rigid element from the first inclined surface
The height at place extends to the position to connect with the first inclined surface lower part down, and does not arrive at the second inclined surface.
9. check (non-return) valve according to claim 1, it is characterised in that：The mounting portion, forced section and switch portion are integrally formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721790419.7U CN207701851U (en) | 2017-12-20 | 2017-12-20 | Check (non-return) valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721790419.7U CN207701851U (en) | 2017-12-20 | 2017-12-20 | Check (non-return) valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207701851U true CN207701851U (en) | 2018-08-07 |
Family
ID=63027198
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721790419.7U Active CN207701851U (en) | 2017-12-20 | 2017-12-20 | Check (non-return) valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207701851U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113753200A (en) * | 2021-08-11 | 2021-12-07 | 万舟救生装备(东台)有限公司 | Portable life jacket immersion and rapid expansion device |
| CN115823298A (en) * | 2023-02-27 | 2023-03-21 | 江苏恒泰泳池科技股份有限公司 | Switch valve, swimming pool filter using switch valve and working method |
-
2017
- 2017-12-20 CN CN201721790419.7U patent/CN207701851U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113753200A (en) * | 2021-08-11 | 2021-12-07 | 万舟救生装备(东台)有限公司 | Portable life jacket immersion and rapid expansion device |
| CN113753200B (en) * | 2021-08-11 | 2022-11-08 | 万舟救生装备(东台)有限公司 | Portable life jacket immersion and rapid expansion device |
| CN115823298A (en) * | 2023-02-27 | 2023-03-21 | 江苏恒泰泳池科技股份有限公司 | Switch valve, swimming pool filter using switch valve and working method |
| CN115823298B (en) * | 2023-02-27 | 2023-09-08 | 江苏恒泰泳池科技股份有限公司 | Switch valve, swimming pool filter using switch valve and working method of switch valve |
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