CN206429714U - A kind of pressure maintaining valve and water purifier - Google Patents
A kind of pressure maintaining valve and water purifier Download PDFInfo
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- CN206429714U CN206429714U CN201621331143.1U CN201621331143U CN206429714U CN 206429714 U CN206429714 U CN 206429714U CN 201621331143 U CN201621331143 U CN 201621331143U CN 206429714 U CN206429714 U CN 206429714U
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- pressure
- maintaining valve
- pressure maintaining
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Abstract
The utility model provides a kind of pressure maintaining valve, including is provided with the shell of inlet opening, apopore, first annular seal space and the second annular seal space, and inlet opening is connected with the second annular seal space；Axially displaceably it is arranged on the motion bar in shell, motion bar has centre bore and stretches into one end of first annular seal space with the first pressure-bearing surface, the motion bar other end, which has, can block the second pressure-bearing surface of inlet opening, and the area of the first pressure-bearing surface is more than the area of the second pressure-bearing surface；It is set in the spring on motion bar；The first locating part offseted with the one end of spring away from inlet opening, it is fixedly connected with motion bar；The second locating part offseted with the spring other end, it is fixedly connected with shell；It is tightly connected between motion bar and shell by sealing gasket, sealing gasket outer end is fixed on shell, and the inner is fixed on motion bar, there is telescopic chute in the middle part of sealing gasket.The utility model improves the sealing property of pressure maintaining valve, it is ensured that the voltage regulation performance of pressure maintaining valve.The utility model also provides a kind of water purifier.
Description
Technical field
The utility model is related to purification of water quality processing technology field, and more specifically to a kind of pressure maintaining valve, this practicality is new
Type further relates to a kind of water purifier with above-mentioned pressure maintaining valve.
Background technology
Dynamic sealing between the motion bar and housing of existing pressure maintaining valve is frequently with rubber seal, and rubber seal is arranged
Between motion bar and housing, but as the mobile of motion bar can cause sealing ring more easy to wear, sealing property is poor, and then
Influence the voltage regulation performance of pressure maintaining valve.
In summary, the sealing property of pressure maintaining valve how is improved, is current this area to ensure the voltage regulation performance of pressure maintaining valve
Technical staff's technical problem urgently to be resolved hurrily.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of pressure maintaining valve, to improve the sealing property of pressure maintaining valve, from
And ensure the voltage regulation performance of pressure maintaining valve.
Another object of the present utility model is to provide a kind of water purifier with above-mentioned pressure maintaining valve, to improve pressure maintaining valve
Sealing property, so as to ensure the voltage regulation performance of pressure maintaining valve.
In order to achieve the above object, the utility model provides following technical scheme：
A kind of pressure maintaining valve, including：
It is provided with the shell of inlet opening, apopore, first annular seal space and the second annular seal space, the inlet opening and described second
Annular seal space is connected；
The motion bar in the shell is axially displaceably arranged on, the motion bar, which has, connects the first annular seal space
With the centre bore of second annular seal space, and the motion bar stretch into the first annular seal space one end have the first pressure-bearing surface,
One end that the motion bar stretches into second annular seal space has and can block the second pressure-bearing surface of the inlet opening, and described the
The area of one pressure-bearing surface is more than the area of second pressure-bearing surface；
It is set in the spring on the motion bar；
The first locating part offseted with the one end of the spring away from the inlet opening, first locating part and the work
Lever is fixedly connected；
The second locating part offseted with the spring close to one end of the inlet opening, second locating part with it is described outer
Shell is fixedly connected；
Wherein, it is tightly connected between the motion bar and the shell by sealing gasket, the sealing gasket outer end is fixed on
On shell, the inner is fixed on the motion bar, has telescopic chute in the middle part of the sealing gasket.
It is preferred that, in above-mentioned pressure maintaining valve, first locating part is first annular spacing preiection, described first annular spacing
Raised is integral type structure with the motion bar.
It is preferred that, in above-mentioned pressure maintaining valve, the shell has the installation cavity with atmosphere, and the spring is located at the peace
In behaveing affectedly.
It is preferred that, in above-mentioned pressure maintaining valve, second locating part is the stop sleeve in the installation cavity, the branch
Support set cylinder offsets by the way that the second annular stop is raised with the spring, has between the stop sleeve and the shell and air
The gap of connection, the stop sleeve, which has, connects the gap and the micropore of the installation cavity.
It is preferred that, in above-mentioned pressure maintaining valve, the shell includes outer cover body and is detachably connected with the outer cover body
Upper lid.
It is preferred that, in above-mentioned pressure maintaining valve, the first annular spacing preiection is slidably matched with the stop sleeve, the branch
Support set cylinder is tightly connected close to one end of the first annular seal space by the first sealing gasket with the upper lid, the motion bar, institute
State the first sealing gasket, the motion bar and the upper the cap-shaped into first annular seal space；
The external end impacts of first sealing gasket are covered between the stop sleeve on described, and the inner passes through the first nut
It is pressed on the end face of the first annular spacing preiection away from the spring.
It is preferred that, in above-mentioned pressure maintaining valve, second annular stop project through the second sealing gasket and the outer cover body,
The motion bar is tightly connected, and second sealing gasket, the outer cover body and the motion bar form second annular seal space；
Positioning shaft shoulder is provided with the motion bar, the external end impacts of second sealing gasket are in second annular stop
Between the raised end face away from the spring and the outer cover body, the inner is pressed on the positioning shaft shoulder by the second nut
On, the sealing gasket includes first sealing gasket and second sealing gasket.
It is preferred that, in above-mentioned pressure maintaining valve, the first pad is provided between first nut and first sealing gasket；Institute
State and be provided with the second pad between the second nut and second sealing gasket.
It is preferred that, in above-mentioned pressure maintaining valve, the sealing gasket is rubber blanket, and the is provided with the outer end end face of the sealing gasket
The second anti-skid bulge is provided with one anti-skid bulge, inner end face.
It can be seen from above-mentioned technical scheme that, the pressure maintaining valve that the utility model is provided includes：It is provided with inlet opening, water outlet
The shell in hole, first annular seal space and the second annular seal space, inlet opening is connected with the second annular seal space；Axially displaceably it is arranged on shell
Interior motion bar, motion bar has connection first annular seal space and the centre bore of the second annular seal space, and motion bar stretches into the first sealing
One end of chamber has the first pressure-bearing surface, and one end that motion bar stretches into the second annular seal space has and can block the second of inlet opening and hold
Pressure surface, the area of the first pressure-bearing surface is more than the area of the second pressure-bearing surface；It is set in the spring on motion bar；With spring away from water inlet
The first locating part that the one end in hole offsets, the first locating part is fixedly connected with motion bar；With spring close to inlet opening one end phase
The second locating part supported, the second locating part is fixedly connected with shell；Wherein, sealed and connected by sealing gasket between motion bar and shell
Connect, sealing gasket outer end is fixed on shell, and the inner is fixed on motion bar, there is telescopic chute in the middle part of sealing gasket.
Using when, pressure maintaining valve is arranged on water purifier, and inlet opening is connected with water inlet pipe, apopore and water purifier
Water inlet is connected, so, when the water feeding pressure in water inlet pipe is higher than water feeding pressure as defined in water purifier, the high pressure in water inlet pipe
Water is by the inlet opening of pressure maintaining valve, through the gap between the second pressure-bearing surface and inlet opening, into the second annular seal space, then through motion bar
Centre bore enters first annular seal space, the first annular seal space in the presence of the difference in areas of hydraulic pressure and the first pressure-bearing surface and the second pressure-bearing surface
Pressure chamber is formed, overcomes spring force to promote motion bar to be moved to the direction close to the second annular seal space, so as to reduce the second pressure-bearing
Gap between face and inlet opening, the purpose of outlet decompression is reached using reducing pressure by regulating flow, the low pressure water after decompression can be from apopore
Flow into the water inlet of water purifier；When the water feeding pressure in water inlet pipe is not higher than water feeding pressure as defined in water purifier, the first sealing
The motive force that chamber applies to the first pressure-bearing surface is less than the elastic force of spring, and spring can promote motion bar to the side away from the second annular seal space
To movement, so as to increase the gap between the second pressure-bearing surface and inlet opening, the gap is not enough to play the effect of throttling, now surely
Pressure valve will not be depressured to water feeding pressure, so the hydraulic pressure of apopore outflow is equal to the hydraulic pressure that inlet opening enters.
When being moved due to motion bar, sealing gasket can realize dynamic sealing by the stretching of the flexible supplement sealing gasket of telescopic chute,
So the outer end opposite shell of sealing gasket can be avoided to move, inner relative motion bar is moved, so as to avoid
Sealing gasket weares and teares, therefore improves the sealing property of pressure maintaining valve, so as to ensure that the voltage regulation performance of pressure maintaining valve.
In addition, above-mentioned pressure maintaining valve ensure that the water feeding pressure of water purifier is up to standard, so as to reduce water purifier maintaining frequency
Rate.Moreover, pressure maintaining valve will not be depressurized when water feeding pressure is low to water outlet hydraulic pressure, so as to reach preferable voltage regulation result.
The utility model additionally provides a kind of water purifier, including water purification main body, in addition to is arranged on the water purification main body
The pressure maintaining valve of water inlet, the pressure maintaining valve is any pressure maintaining valve as described above, because above-mentioned pressure maintaining valve has the effect above, tool
The water purifier for having above-mentioned pressure maintaining valve has same effect, therefore repeats no more herein.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the accompanying drawing used required in description of the prior art is briefly described, it should be apparent that, drawings in the following description are these
Some embodiments of utility model, for those of ordinary skill in the art, on the premise of not paying creative work, also
Other accompanying drawings can be obtained according to these accompanying drawings.
Fig. 1 is the structural representation for the pressure maintaining valve that the utility model embodiment is provided；
Fig. 2 is the assembling structure schematic diagram for the pressure maintaining valve that the utility model embodiment is provided；
Fig. 3 is the structural representation when pressure maintaining valve that the utility model embodiment is provided is applied.
Embodiment
The utility model embodiment provides a kind of pressure maintaining valve, improves the sealing property of pressure maintaining valve, so as to ensure that steady
The voltage regulation performance of pressure valve.
It is new below in conjunction with this practicality to make the purpose, technical scheme and advantage of the utility model embodiment clearer
Accompanying drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that retouched
The embodiment stated is a part of embodiment of the utility model, rather than whole embodiments.Based on the implementation in the utility model
Example, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made is belonged to
The scope of the utility model protection.
Accompanying drawing 1-3 is refer to, the pressure maintaining valve that the utility model embodiment is provided includes：Be provided with inlet opening 1, apopore 2,
First annular seal space A and the second annular seal space B shell, inlet opening 1 are connected with the second annular seal space B；Axially displaceably set outside
Motion bar in shell, motion bar has connection first annular seal space A and the second annular seal space B centre bore 71, and motion bar stretches into the
One annular seal space A one end have the first pressure-bearing surface, motion bar stretch into the second annular seal space B one end have can block inlet opening
1 the second pressure-bearing surface, the area of the first pressure-bearing surface is more than the area of the second pressure-bearing surface；It is set in the spring 6 on motion bar；With bullet
The first locating part that the one end of spring 6 away from inlet opening 1 offsets, the first locating part is fixedly connected with motion bar；With spring 6 close to enter
The second locating part that the one end in water hole 1 offsets, the second locating part is fixedly connected with shell；Wherein, lead between motion bar and shell
Cross sealing gasket to be tightly connected, sealing gasket outer end is fixed on shell, and the inner is fixed on motion bar, have in the middle part of sealing gasket flexible
Groove 81.
Using when, pressure maintaining valve is arranged on water purifier, and inlet opening 1 is connected with water inlet pipe, apopore 2 and water purifier
Water inlet connection, so, when the water feeding pressure in water inlet pipe is higher than water feeding pressure as defined in water purifier, the height in water inlet pipe
Water is pressed by the inlet opening 1 of pressure maintaining valve, through the gap between the second pressure-bearing surface and inlet opening 1, into the second annular seal space B, Ran Houjing
Motion bar centre bore 71 enters first annular seal space A, in the presence of the difference in areas of hydraulic pressure and the first pressure-bearing surface and the second pressure-bearing surface
First annular seal space A formation pressure chambers, overcome the elastic force of spring 6 to promote motion bar to be moved to the direction close to the second annular seal space B, so that
Reduce the gap between the second pressure-bearing surface and inlet opening 1, the purpose of outlet decompression, the low pressure after decompression are reached using reducing pressure by regulating flow
Water can flow into the water inlet of water purifier from apopore 2；When the water feeding pressure in water inlet pipe is not higher than water of being intake as defined in water purifier
During pressure, the motive force that first annular seal space A applies to the first pressure-bearing surface is less than the elastic force of spring 6, and spring 6 can promote motion bar to remote
Direction movement from the second annular seal space B, so as to increase the gap between the second pressure-bearing surface and inlet opening 1, the gap is not enough to hair
The effect of throttling is waved, now pressure maintaining valve will not be depressured to water feeding pressure, so the hydraulic pressure that apopore 2 flows out enters equal to inlet opening 1
The hydraulic pressure entered.
When being moved due to motion bar, sealing gasket can be realized dynamic close by the stretching of the flexible supplement sealing gasket of telescopic chute 81
Envelope, so the outer end opposite shell of sealing gasket can be avoided to move, inner relative motion bar is moved, so as to keep away
Exempt from sealing gasket to wear and tear, therefore improve the sealing property of pressure maintaining valve, so as to ensure that the voltage regulation performance of pressure maintaining valve.
In addition, above-mentioned pressure maintaining valve ensure that the water feeding pressure of water purifier is up to standard, so as to reduce water purifier maintaining frequency
Rate.Moreover, pressure maintaining valve will not be depressurized when water feeding pressure is low to water outlet hydraulic pressure, so as to reach preferable voltage regulation result.Meanwhile, this
The spring 6 of utility model does not contact water, improves the service life of spring 6.
In the specific embodiment of the utility model one, the first locating part is first annular spacing preiection 72, first annular spacing
Projection 72 is integral type structure with motion bar.The utility model utilizes the projection on motion bar and one of spring 6 away from inlet opening 1
End offsets, and one end progress to spring 6 is spacing, simple in construction, is easy to processing.Above-mentioned first locating part can also be other knots
Structure, is such as coated at motion bar and the spacing ring being fixedly connected with motion bar, this is no longer going to repeat them for the utility model.
For the ease of compression spring 6, it is preferred that shell has the installation cavity with atmosphere, spring 6 is located at installation cavity
It is interior.So, hydraulic pressure only needs to overcome the elastic force of spring 6, you can driving motion bar movement, improves functional reliability.Certainly,
Above-mentioned installation cavity can not also with atmosphere, now hydraulic pressure need to overcome the pressure that atmospheric pressure in installation cavity is produced.
In the specific embodiment of the utility model one, the second locating part is the stop sleeve 5 in installation cavity, stop sleeve
5 are offseted by the second annular stop projection with spring 6.The utility model using stop sleeve 5 the second annular stop it is raised with
Spring 6 offsets, and realizes the restriction to the other end of spring 6, is easy to assembling.Certainly, the utility model also with using spacing ring or
The projection of shell itself realizes same effect.
There is the gap with atmosphere, stop sleeve 5 has connection in the present embodiment, between stop sleeve 5 and shell
The micropore 51 of gap and installation cavity, such spring 6 is by the micropore 51 of stop sleeve 5, between stop sleeve 5 and shell
Gap and atmosphere, the size for being easily installed chamber change with the movement of motion bar.Certainly, above-mentioned stop sleeve 5 also may be used
To be not provided with above-mentioned micropore 51, it is spaced by being set between stop sleeve 5 and shell, to connect above-mentioned installation cavity and air.
For the ease of the assembly and disassembly of motion bar, shell includes outer cover body 3 and the upper lid 9 being detachably connected with outer cover body 3.
During assembling, spring 6 and stop sleeve 5 are loaded onto on motion bar first, its components is constituted, its components is then loaded into shell
In body 3, lid 9 is finally installed on outer cover body 3, specifically, upper lid 9 is locked on outer cover body 3 using screw.This
Utility model makes its components and upper lid 9 dismantled and assembled, is easy to the maintaining of pressure maintaining valve.Certainly, above-mentioned shell can also include
Overall housing, now can be using injection or cast molding.
As shown in figure 1, first annular spacing preiection 72 is slidably matched with stop sleeve 5, stop sleeve 5 is close close to first
Envelope chamber A one end is tightly connected by the first sealing gasket 8 with upper lid 9, motion bar, the first sealing gasket 8, motion bar and the shape of upper lid 9
Into first annular seal space A；The external end impacts of first sealing gasket 8 are between upper lid 9 and stop sleeve 5, and the inner passes through the first nut 12
It is pressed on first annular end face of the spacing preiection 72 away from spring 6.
The present embodiment makes stop sleeve 5 be offseted with upper lid 9, and passes through the first sealing gasket 8 between stop sleeve 5 and upper lid 9
Outer end be tightly connected, the first sealing gasket 8 it is inner coordinated by the first nut 12 with first annular spacing preiection 72 compress, this
The first sealing gasket of sample 8 can separate spring 6 and first annular seal space A sealings.
In the present embodiment, when motion bar is moved, the outer end of the first sealing gasket 8 is fixedly connected with shell all the time, and the inner is all the time
It is fixedly connected with motion bar, only by the stretching of the first sealing gasket of flexible supplement 8 of telescopic chute 81, so can avoid first close
The outer end opposite shell of packing 8 is moved, and inner relative motion bar is moved, so as to avoid the first sealing gasket 8 from sending out
Raw abrasion.It is understood that above-mentioned stop sleeve 5 can not also offset with upper lid 9, make shape between lid 9 and stop sleeve 5
Into the gap connected with installation cavity, and open up on outer cover body 3 through hole with atmosphere；Now the first sealing gasket 8 is outer
End is pressed between lid 9 and outer cover body 3, to realize the same effect for separating spring 6 and first annular seal space A sealings,
The utility model is not especially limited to this.The utility model can also replace above-mentioned first nut 12 using other structures, such as
Neck is directly opened up on motion bar, the inner of the first sealing gasket 8 is fastened in neck.
In further technical scheme, the second annular stop projects through the second sealing gasket 4 and outer cover body 3, motion bar
It is tightly connected, the second sealing gasket 4, the second annular seal space B of outer cover body 3 and motion bar formation；Positioning shaft shoulder is provided with motion bar,
The external end impacts of second sealing gasket 4 are between the second annular stop raised end face and outer cover body away from spring 6, and the inner passes through
Second nut 14 is pressed in positioning shaft shoulder, and sealing gasket includes the first sealing gasket 8 and the second sealing gasket 4.In the present embodiment, activity
When bar is moved, the outer end of the second sealing gasket 4 is fixedly connected with shell all the time, and the inner is fixedly connected with motion bar all the time, is only passed through
The stretching of the second sealing gasket of flexible supplement 4 of telescopic chute 81, so the outer end opposite shell of the second sealing gasket 4 can be avoided to occur
Motion, inner relative motion bar is moved, so as to avoid the second sealing gasket 4 from wearing and tearing.
It is integral type structure that the utility model, which can also make the second annular stop raised with outer cover body 3, so only by the
The outer end of two sealing gaskets 4 is fixed on shell.The utility model can also replace above-mentioned second nut using other structures
14, neck is such as directly opened up on shell, the outer end of the second sealing gasket 4 is caught in the neck.
In order to improve the locking effect of sealing gasket, the first pad 13 is provided between the first nut 12 and the first sealing gasket 8；
The second pad 11 is provided between second nut 14 and the second sealing gasket 4.Two pads can increase connecing for sealing gasket and nut
Contacting surface is accumulated, and then improves locking intensity.Certainly, the utility model can also be not provided with above-mentioned pad, by increasing nut end face
The mode of area reaches same effect.
In assembling process, the first sealing gasket 8, the first pad 13, the first nut 12 are arranged on to one end of motion bar first；
Then spring 6 is loaded on motion bar；Then stop sleeve 5 is loaded in the other end of motion bar；Then by the second sealing gasket 4,
Second pad 11, the second nut 14 are arranged on the other end of motion bar, and lock each parts, constitute its components；Then will
Its components are assembled in shell book, are locked upper lid 9 and outer cover body 3 using screw, it is ensured that each sealing gasket sealed reliable.
It is preferred that, sealing gasket is rubber blanket, certainly, sealing gasket can also for silicagel pad or other there is sealing effectiveness
Pad.
It is provided with the first anti-skid bulge 82, inner end face that to be provided with second anti-skidding convex on the outer end end face of above-mentioned sealing gasket
Play 83.As shown in figure 3, the first anti-skid bulge 82 of the first sealing gasket 8 is respectively embedded into the groove of lid 9 and stop sleeve 5,
And compressed by the muscle side of upper lid 9 and stop sleeve 5, play sealing function；Second anti-skid bulge 83 of the first sealing gasket 8 is embedded in
Compressed into first annular spacing preiection 72, and by first annular spacing preiection 72 with the first pad 13, play sealing function.
The sealing of second sealing gasket 4 is also such.When the overall direction to close to the second annular seal space B of motion bar is moved, telescopic chute
The stretching of 81 deformation supplement sealing gaskets, so as to protect sealing gasket intact, improves sealed reliability.
The fixation that the utility model improves sealing gasket two ends using the first anti-skid bulge 82 and the second anti-skid bulge 83 is strong
Degree, certainly, the utility model can also be not provided with above-mentioned anti-skid bulge, and the two ends for carrying out fixing seal pad are deformed merely with compressing.
In order to further optimize above-mentioned technical proposal, motion bar includes activity bar body 7 and is arranged on activity bar body 7 leaning on
The closure pad 10 of one end of nearly inlet opening 1, end face the second pressure-bearing surface of formation of closure pad 10.Using when, from inlet opening 1 enter
High-pressure water inlet, enters the second annular seal space B, then the centre bore through motion bar from the gap between closure pad 10 and outer cover body 3
The first annular seal space A as pressure chamber is formed between the 71 upper tops of lid 9 of entrance, the first pressure-bearing surface of upper lid 9 and motion bar, is overcome
The elastic force of spring 6 promotes motion bar to move down, so as to change the gap between closure pad 10 and outer cover body, reaches outlet decompression
Purpose.
When water feeding pressure is higher, the utility model blocks inlet opening 1 using pad 10 is blocked, and closure pad 10 is flexible,
Sealing effectiveness is preferable, so the reliability of pressure maintaining valve closing can be improved.Interchangeable, the utility model can also utilize activity
End face or spring leaf the second pressure-bearing surface of formation of bar body 7 itself.
In the utility model actual application scheme, the intake pressure of water purifier can be reduced to by pressure maintaining valve by 1.2MPa
0.4MPa, and in intake pressure less than 0.4MPa as do not depressurized when being 0.2MPa.
Water under high pressure (pressure is P1) enters the second annular seal space B from inlet opening 1 through gap, is flowed out through apopore 2, simultaneously will
Centre bore 71 of the second annular seal space B hydraulic pressure through motion bar reaches first annular seal space A's, first annular seal space A and the second annular seal space B
Pressure is equal to the pressure of apopore 2 (pressure is P2).
We set, and the first pressure-bearing radius surface is R1, and the second pressure-bearing radius surface is R2, then the second pressure-bearing surface is in 0.2MPa
Downward motive force is F1=200000 × π × (R12-R22)
The elastic force F bullets for setting spring 6 are equal to F1, and as hydraulic pressure P1≤0.2MPa of inlet opening 1, then motion bar is by downward
Motive force F2≤F1, the elastic force of spring 6 overcomes F2 to promote motion bar to be moved to the direction close to first annular seal space A, make shell with
The gap remained constant between pad 10 is blocked, so as to realize that current are unimpeded, makes P1=P2.
When water feeding pressure is higher than 0.2MPa, i.e. during 0.2 ＜ P1≤1.0MPa, F2 ＞ F1；I.e. when the water in high-pressure water inlet hole 1
When pressing as 1.0MPa, motive force F2 promotes motion bar to be moved to the direction close to the second annular seal space B, can pad shell with closure
Gap shrinks between 10 stop water inlet, to protect water purifier to 0.
The utility model embodiment additionally provides a kind of water purifier, including water purification main body, in addition to is arranged on water purification main body
Water inlet pressure maintaining valve, the pressure maintaining valve that pressure maintaining valve provides for any of the above-described embodiment improves the sealing of pressure maintaining valve
Can, so as to ensure that the voltage regulation performance of pressure maintaining valve, its advantage is brought by pressure maintaining valve, specifically refer in above-described embodiment
Related part, is just repeated no more herein.
The embodiment of each in this specification is described by the way of progressive, and what each embodiment was stressed is and other
Between the difference of embodiment, each embodiment identical similar portion mutually referring to.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or new using this practicality
Type.A variety of modifications to these embodiments will be apparent for those skilled in the art, determine herein
The General Principle of justice can in other embodiments be realized in the case where not departing from spirit or scope of the present utility model.Cause
This, the utility model is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The most wide scope consistent with features of novelty.
Claims (10)
1. a kind of pressure maintaining valve, it is characterised in that including：
It is provided with the shell of inlet opening (1), apopore (2), first annular seal space (A) and the second annular seal space (B), the inlet opening
(1) connected with second annular seal space (B)；
The motion bar in the shell is axially displaceably arranged on, the motion bar, which has, connects the first annular seal space (A)
With the centre bore (71) of second annular seal space (B), and the motion bar stretches into one end of the first annular seal space (A) has the
One pressure-bearing surface, one end that the motion bar stretches into second annular seal space (B) has can block the inlet opening (1) the
Two pressure-bearing surfaces, the area of first pressure-bearing surface is more than the area of second pressure-bearing surface；
It is set in the spring (6) on the motion bar；
With one end first locating part that offsets of the spring (6) away from the inlet opening (1), first locating part with it is described
Motion bar is fixedly connected；
With the spring (6) close to the inlet opening (1) the second locating part for offseting of one end, second locating part with it is described
Shell is fixedly connected；
Wherein, it is tightly connected between the motion bar and the shell by sealing gasket, the sealing gasket outer end is fixed on shell
On, the inner is fixed on the motion bar, has telescopic chute (81) in the middle part of the sealing gasket.
2. pressure maintaining valve according to claim 1, it is characterised in that first locating part is first annular spacing preiection
(72), the first annular spacing preiection (72) and the motion bar are integral type structure.
3. pressure maintaining valve according to claim 2, it is characterised in that the shell has the installation cavity with atmosphere, institute
Spring (6) is stated in the installation cavity.
4. pressure maintaining valve according to claim 3, it is characterised in that second locating part is in the installation cavity
Stop sleeve (5), the stop sleeve (5) offsets by the way that the second annular stop is raised with the spring (6), the stop sleeve
(5) there is the gap with atmosphere between the shell, the stop sleeve (5), which has, connects the gap and the peace
The micropore (51) behaveing affectedly.
5. pressure maintaining valve according to claim 4, it is characterised in that the shell include outer cover body (3) and with it is described outer
The upper lid (9) that shell body (3) is detachably connected.
6. pressure maintaining valve according to claim 5, it is characterised in that the first annular spacing preiection (72) and the support
Sleeve (5) is slidably matched, the stop sleeve (5) close to the first annular seal space (A) one end by the first sealing gasket (8) with
The upper lid (9), the motion bar are tightly connected, and first sealing gasket (8), the motion bar and the upper lid (9) are formed
The first annular seal space (A)；
The external end impacts of first sealing gasket (8) are covered on described between (9) and the stop sleeve (5), inner by the
One nut (12) is pressed on end face of the first annular spacing preiection (72) away from the spring (6).
7. pressure maintaining valve according to claim 6, it is characterised in that second annular stop projects through the second sealing gasket
(4) it is tightly connected with the outer cover body (3), the motion bar, second sealing gasket (4), the outer cover body (3) and institute
State motion bar and form second annular seal space (B)；
Positioning shaft shoulder is provided with the motion bar, the external end impacts of second sealing gasket (4) are in second annular stop
Between raised end face and the outer cover body (3) away from the spring (6), the inner is pressed on described by the second nut (14)
In positioning shaft shoulder, the sealing gasket includes first sealing gasket (8) and second sealing gasket (4).
8. pressure maintaining valve according to claim 7, it is characterised in that first nut (12) and first sealing gasket
(8) the first pad (13) is provided between；The second pad is provided between second nut (14) and second sealing gasket (4)
Piece (11).
9. the pressure maintaining valve according to claim any one of 1-8, it is characterised in that the sealing gasket is rubber blanket, described close
It is provided with the outer end end face of packing on the first anti-skid bulge (82), inner end face and is provided with the second anti-skid bulge (83).
10. a kind of water purifier, including water purification main body, it is characterised in that the also water inlet including being arranged on the water purification main body
Pressure maintaining valve, the pressure maintaining valve is pressure maintaining valve as described in claim any one of 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621331143.1U CN206429714U (en) | 2016-12-06 | 2016-12-06 | A kind of pressure maintaining valve and water purifier |
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| CN201621331143.1U CN206429714U (en) | 2016-12-06 | 2016-12-06 | A kind of pressure maintaining valve and water purifier |
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| CN206429714U true CN206429714U (en) | 2017-08-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023232276A1 (en) | 2022-06-01 | 2023-12-07 | Husqvarna Ab | Pressure reducer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023232276A1 (en) | 2022-06-01 | 2023-12-07 | Husqvarna Ab | Pressure reducer |
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