CN205669610U - Piston type overflow valve - Google Patents
Piston type overflow valve Download PDFInfo
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- CN205669610U CN205669610U CN201620597232.4U CN201620597232U CN205669610U CN 205669610 U CN205669610 U CN 205669610U CN 201620597232 U CN201620597232 U CN 201620597232U CN 205669610 U CN205669610 U CN 205669610U
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Abstract
This utility model provides a kind of piston type overflow valve, comprising: upper valve body, is provided with pressure adjustmenting mechanism in it；Lower valve body, it has valve body and is connected to the connecting portion of described valve body upper end, described lower valve body is connected to the lower end of described upper valve body by described connecting portion, the upper surface of described valve body is provided with piston, described piston is arranged in described connecting portion with being vertically movable, described pressure adjustmenting mechanism contact is in the upper end of described piston, and described valve body has input channel and output channel, described input channel and the described output channel upper surface respectively with described valve body and is connected.Piston type overflow valve of the present utility model, has good unlatching and cuts out performance, and this piston type structure of relief valve is simple, good airproof performance, be quick on the draw and working value is reliable and stable, and its repair and maintenance is convenient.
Description
Technical field
This utility model is related to a kind of overflow valve, more particularly to the car braking in a kind of rail traffic vehicles field
The piston type overflow valve of system.
Background technology
In rail transit car braking system, whether there is air dielectric to input for control piper downstream, particularly relate to total
When air pipe line gives empty spring air feed, often through overflow valve to downstream air feed.Overflow valve has unlatching pressure set in advance and pass
Closing pressure, when the input pressure on blast main road exceedes the unlatching pressure set points of overflow valve, overflow valve is opened and is held on
State, total wind persistently gives empty spring air feed, when being supplemented in time after empty spring consumption wind, to ensure passenger during car operation
Comfortableness.When blast main road input pressure less than overflow valve open pressure set points time, overflow valve can timely sensitive reliably
Closedown, total wind will no longer give empty spring air feed, and be preferentially used for brake hard wind, to guarantee the safe operation of vehicle.
Existing overflow valve can be divided into film plate type overflow valve and clack type overflow valve according to valve port sealing structure.Film plate type overflow
Valve be by rubber diaphragm seal overflow valve valve port (containing input port and delivery outlet), lamina membranacea edge then embed upper and lower valve body it
Between compacted sealing, when input pressure more than overflow valve setting value time, input pressure acts on lamina membranacea effective area, by gram
Taking the spring compression force above lamina membranacea and opened by valve port, the Diaphragm portion therefore only having corresponding valve pocket size moves up and down, and
The lamina membranacea marginal portion fastened then remains stationary as.Although clack type overflow valve is also to seal valve port by rubber parts, but works as
When input pressure is more than overflow valve setting value, input pressure can act on flap effective area, by overcoming above flap
Spring compression force and valve port is opened, in this process, rubber seal can entirety moves up and down together with flap.
Film plate type overflow valve of the prior art, to folder cloth lamina membranacea processing quality require higher, as hardness, hot strength,
Tearing strength, compression set, brittleness temperature, hot air aging etc., the performance that These parameters all can have influence on overflow valve is steady
Qualitative.Therefore, in use, manufacture and the maintenance cost of folder cloth lamina membranacea are higher.
Therefore, it is necessary to provide a kind of novel overflow valve, overcome drawbacks described above.
Utility model content
The purpose of this utility model is to provide a kind of piston type overflow valve, has good unlatching and closes performance, and this is lived
Plug structure of relief valve is simple, good airproof performance, be quick on the draw and working value is reliable and stable, and its repair and maintenance is convenient.
Above-mentioned purpose of the present utility model can use following technical proposal to realize:
This utility model provides a kind of piston type overflow valve, and described piston type overflow valve includes:
Upper valve body, is provided with pressure adjustmenting mechanism in it；
Lower valve body, it has valve body and is connected to the connecting portion of described valve body upper end, and described lower valve body is by described
Connecting portion is connected to the lower end of described upper valve body, and the upper surface of described valve body is provided with piston, and described piston is vertically movable ground
Being arranged in described connecting portion, described pressure adjustmenting mechanism contact is in the upper end of described piston, and it is logical that described valve body has input
Road and output channel, described input channel and described output channel upper surface with described valve body respectively is connected.
In a preferred embodiment, described pressure adjustmenting mechanism includes:
Upper spring seat, it is positioned at described upper valve body；
Spring, it is positioned at described upper valve body, the upper end contact of described spring on described upper spring seat, described spring
Lower end contact is on described piston；
Adjusting screw, it is connected to the upper end of described upper valve body and stretches in described upper valve body, described adjustment screw contact
On described upper spring seat.
In a preferred embodiment, the outer rim of described piston is arranged with K shape sealing ring, the internal ring of described K shape sealing ring
Wall is formed with ring groove, in described ring groove when charged pressure gas, and described K shape sealing ring and described connecting portion
Inner wall sealing coordinates.
In a preferred embodiment, the lower end of described upper valve body has external thread section, the upper end edge of described external thread section
Circumferencial direction is provided with multiple spout hole, and the inwall of described connecting portion is formed with internal thread segment, described internal thread segment and described outer spiral shell
Stricture of vagina section bolt, the upper surface of described connecting portion is along the circumferential direction provided with multiple projection, and described projection contact is at described upper valve body
On, it being formed with overflow launder between the most adjacent described projection, described spout hole is relative with described overflow launder to be connected.
In a preferred embodiment, the upper surface of described valve body is convexly equipped with valve port ring, and described valve port ring is positioned at described
The outward flange of output channel, the lower end of described piston is provided with rubber blanket, and described valve port ring is oppositely arranged with described rubber blanket.
In a preferred embodiment, the upper surface of described valve body is along the circumferential direction convexly equipped with multiple boss, Duo Gesuo
State boss and be positioned at the outside of described valve port ring.
In a preferred embodiment, described valve body is provided with input port, described input port and described input channel phase
Connection, described input port is positioned at the sidewall of described valve body or described input port is positioned at the lower surface of described valve body.
In a preferred embodiment, described valve body is provided with delivery outlet, described delivery outlet and described output channel phase
Connection, described delivery outlet is positioned at the sidewall of described valve body or described delivery outlet is positioned at the lower surface of described valve body.
In a preferred embodiment, it is respectively equipped with filter element in described input channel and described output channel.
In a preferred embodiment, described filter element is made up of copper based powder metallurgy material.
Feature and the advantage of piston type overflow valve of the present utility model be: this piston type overflow valve have good unlatching and
Closing performance, its simple in construction, good airproof performance, be quick on the draw and working value is reliable and stable, its repair and maintenance is convenient, takes into full account
Arrive the complex environment of Unpredictability during car operation, more because using air filtration, Safety Redundancy, spacing guarantor
Protect, sealing member protection etc. optimizes design, thus substantially increases the performance of overflow valve, reduces maintenance, operation cost.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme in this utility model embodiment, required in embodiment being described below
Accompanying drawing to be used is briefly described, it should be apparent that, the accompanying drawing in describing below is only realities more of the present utility model
Execute example, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to according to these accompanying drawings
Obtain other accompanying drawing.
Fig. 1 is the front sectional view of piston type overflow valve of the present utility model.
Fig. 2 is the front sectional view of the upper valve body of piston type overflow valve of the present utility model.
Fig. 3 is the axonometric chart of the lower valve body of piston type overflow valve of the present utility model.
Fig. 4 is the front sectional view of the lower valve body of piston type overflow valve of the present utility model.
Fig. 5 is the A portion enlarged drawing of Fig. 1.
Fig. 6 is the B portion enlarged drawing of Fig. 1.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of this utility model rather than whole
Embodiment.Based on the embodiment in this utility model, those of ordinary skill in the art are not under making creative work premise
The every other embodiment obtained, broadly falls into the scope of this utility model protection.
As it is shown in figure 1, this utility model provides a kind of piston type overflow valve, it includes upper valve body 1 and lower valve body 2, wherein:
Pressure adjustmenting mechanism 3 it is provided with in upper valve body 1；Lower valve body 2 has valve body 21 and is connected to the connection of described valve body 21 upper end
Portion 22, described lower valve body 2 is connected to the lower end of described upper valve body 1, the upper surface of described valve body 21 by described connecting portion 22
Being provided with piston 4, described piston 4 is arranged in described connecting portion 22 with being vertically movable, and described pressure adjustmenting mechanism 3 contact is in institute
Stating the upper end of piston 4, described valve body 21 has input channel 211 and an output channel 212, described input channel 211 and described
Output channel 212 upper surface with described valve body 21 respectively is connected.
Specifically, as in figure 2 it is shown, upper valve body 1 is substantially in upper end closed and the cylindrical of lower ending opening, this upper valve body 1
There is inner chamber 11, at the upper end roof of upper valve body 1, offer screwed hole 12；In this utility model, the lower end of this upper valve body 1
Having external thread section 13, the upper end edge circumferencial direction of this external thread section 13 is provided with multiple spout hole 14, that is, at upper valve body 1
Offer spout hole 14, at the Gewindefreistiche of external thread section 13 in the present embodiment, on this upper valve body 1 the most at equal intervals
Being provided with four spout holes 14, the most in other examples, the quantity of spout hole 14 is not limited thereto, the number of spout hole 14
Amount can select to arrange according to actual needs.
As shown in Figure 3 and Figure 4, lower valve body 2 includes that valve body 21 and connecting portion 22, connecting portion 22 are an annular tubular, its
Being connected to the upper surface of valve body 21, the upper end inwall of this connecting portion 22 has internal thread segment 221, and lower valve body 2 passes through connecting portion
The internal thread segment 221 of 22 is threaded on the external thread section 13 of upper valve body 1 lower end, and threaded fastening is firm, dismounting is simple,
Upper valve body 1 and the dismounting of lower valve body 2 can be facilitated.In this utility model, the upper surface of connecting portion 22 is along the circumferential direction provided with
Multiple projections 222, those projections 222 are arranged at equal intervals, are formed with overflow launder 223, in this reality between the most adjacent projection 222
Execute in example, be provided with four projections 222, the most in other examples, projection 222 in the upper surface of connecting portion 22 at equal intervals
Quantity be not limited thereto, the quantity of projection 222 can select according to actual needs arrange.As it is shown in figure 5, valve body 2 spiral shell instantly
After stricture of vagina is connected to the lower end of upper valve body 1, multiple projections 222 of lower valve body 2 can be resisted against upper valve body 1, and adjacent projections 222 two-by-two
Between the overflow launder 223 that formed can relative with multiple spout holes 14 of upper valve body 1 connect, in order to make the inner chamber 11 of upper valve body 1 and overflow
The outside of stream valve forms connected state.
This input channel 211 and output channel 212 are positioned at valve body 21, input channel 211 and output channel 212 respectively
It is connected with the upper surface of valve body 21.In the present embodiment, the upper surface of valve body 21 is convexly equipped with valve port ring 213, this valve port
Ring 213 is positioned at the outward flange of output channel 212, that is, outside being formed between the upper surface of output channel 212 and valve body 21
This valve port ring 213 is set on edge.
Further, the upper surface of this valve body 21 is along the circumferential direction convexly equipped with multiple boss 214, multiple boss 214
Outside in valve port ring 213.In the present embodiment, this most curved shape of boss 214, multiple boss 214 are along the circumferential direction
Projection is in the upper surface of valve body 21 at equal intervals, and multiple boss 214 enclose the center of circle of the imaginary circle setting formation and the circle of valve port ring 213
The heart is arranged concentrically.
This valve body 21 is provided with input port 215 and delivery outlet 216, and wherein, input port 215 is connected with input channel 211
Logical, delivery outlet 216 is connected with output channel 212.In one embodiment, this input port 215 is positioned at a sidewall of valve body 21,
Delivery outlet 216 is positioned at another sidewall of valve body 21, and this input port 215 is placed in delivery outlet 216 relative the two of valve body 21
Side；In another embodiment, this input port 215 and delivery outlet 216 can lay respectively at the lower surface of valve body 21.
Further, as it is shown on figure 3, the relative two side of the valve body 21 that is placed in delivery outlet 216 in input port 215
Embodiment in, the front side wall in valve body 21 can be provided with airflow direction mark part 217, and this airflow direction mark part 217 is used for
Representing that gas flows through the direction of valve body 21, in the present embodiment, this airflow direction mark part 217 is an arrow, this arrow
It is oriented to point to delivery outlet 216 from input port 215.
Pressure adjustmenting mechanism 3 is arranged in the inner chamber 11 of upper valve body 1, and its contact is being arranged at the work of valve body 1 upper surface
Filling in 4 upper ends, please refer to Fig. 6, wherein, piston 4 is made up of metal material, and its lower surface is provided with rubber blanket 43, this rubber blanket
43 are incorporated in the lower surface groove of piston 4 by the way of sulfuration, thus the lower surface of this rubber blanket 43 and piston 4 is a water
Plane, the valve port ring 213 being positioned at valve body 21 upper surface is oppositely arranged with rubber blanket 43.
In this utility model, as it is shown in figure 1, this pressure adjustmenting mechanism 3 includes upper spring seat 31, spring 32 and adjusts spiral shell
Nail 33, wherein: upper spring seat 31 is positioned in the inner chamber 11 of upper valve body 1；Spring 32 is positioned in the inner chamber 11 of upper valve body 1, spring 32
Upper end contact on upper spring seat 31, the lower end contact of spring 33 is on piston 4；Adjust screw 33 and be connected to upper valve body 1
Upper end is also stretched in upper valve body 1, and this adjustment screw 33 contact is on upper spring seat 31.
Specifically, adjusting screw 33 and be screwed onto in the screwed hole 12 of upper valve body 1, upper spring seat 31 contact is at upper valve body 1
Inner chamber 11 upper end, after upper valve body 1 and lower valve body 2 connect, spring 32 is folded between upper spring seat 31 and piston 4.By adjusting
Whole screw 33 and upper spring seat 31 regulate the original state of spring 32, thus can accurately and continuous print adjusts the unlatching of overflow valve
Force value.
This pressure adjustmenting mechanism 3 adjusts screw 33 by rotating, and makes the end bulb of adjustment screw 33 be resisted against spring
On the concave surface of seat 31, adjustment screw 33 stretches into the power of upper valve body 1 inner chamber 11 can act on upper spring seat 31, thus by bullet on this
Spring abutment 31 gives 32 1 precompressions of spring, and spring 32 can promote piston 4 to move down and block on valve port ring 213, thus block valve
The output channel 212 of body 21；Owing to the rubber blanket 43 of piston 4 contacts with the valve port ring 213 on valve body 21, now, live
An annular chamber 218, this annular chamber 218 and input channel 211 phase is formed between lower surface and the upper surface of valve body 21 of plug 4
Connection.
This piston type overflow valve in the course of the work, is opened when the air pressure in input port 215 is less than set overflow valve
During pressure, piston 4 contacts with valve port ring 213, and valve port remains off.Along with the rising of pressure in input port 215, when reaching
During overflow valve specified unlatching pressure, the high pressure gas of annular chamber 218 knows from experience the precompression promoting piston 4 to overcome spring 32, thus beats
The state that broken valve port is closed, piston 4 separates with valve port ring 213, and valve port is opened, and in opening process, gas pressure is in piston 4
The effectively gross area expands simultaneously, due to this enlarge-effect, has obtained the improvement of overflow valve, has the most quickly responded, it is to avoid
The flutter phenomenon of piston 4, finally achieves the unlatching of overflow valve, and now, input port 215 and the delivery outlet 216 of overflow valve keep
Conducting state.
In this utility model, the outer rim of piston 4 is arranged with K shape sealing ring 5, and the internal ring wall of this K shape sealing ring 5 is formed
Ring groove 51, in this ring groove 51 when charged pressure gas, K shape sealing ring 5 can be with the inner wall sealing of connecting portion 22
Coordinate.
Specifically, the outer rim of piston 4 is provided with ring groove 41, and K shape sealing ring 5 is placed in this ring groove 41 the most ringwise
In, it being provided with air inlet 42 at the lower surface outer rim of this piston 4, this air inlet 42 is connected with ring groove 41, when compressed air warp
Input port 215, input channel 211 and annular chamber 218 are entered after in ring groove 41 by air inlet 42, and this compressed air can be filled with
The ring groove 51 of K shape sealing ring 5, now K shape sealing ring 5 can radial outward dilations, thus with in the connecting portion 22 of lower valve body 2
Locking sealing is carried out between wall.
In an embodiment of the present utility model, in this input channel 211 and output channel 212, it is respectively equipped with filter element 6,
This filter element 6 is made up of copper based powder metallurgy material.
Specifically, the inwall of input channel 211 and output channel 212 is equipped with annular groove, in the present embodiment, this filter
Core 6 can be cylinder-shaped in round platform, is placed in by the edge of opening of filter element 6 in the annular groove of input channel 211 and output channel 212 inwall,
Afterwards by circlip 7 contact filter element 6, prevent filter element from deviating from.
Vehicle operation during, every certain time between overhauls(TBO), all parts in system can be carried out maintenance and
Safeguard, during dismounting and replacing parts, unavoidably there will be foreign body enter the situation of pipe-line system.Work as use for brake system
Wind regime air filter lost efficacy, or when brakes cleaner lost efficacy, foreign particles can enter in pipe-line system equally.When
Foreign body in pipe-line system is along with time in air-flow enters into piston type overflow valve of the present utility model, when foreign body adhesion valve port ring
213 with the sealing of rubber blanket 43 at time, influence whether the normally-open of overflow valve and close；Air inlet when foreign matters from being blocked piston 4
During hole 42, compressed air will be unable to useful effect in K shape sealing ring 5, thus cause overflow valve to be sewed, unlatching value overproof, even
Overflow valve such as cannot open at the phenomenon；When foreign body is filled in the gap between valve body 21 upper surface of piston 4 and lower valve body 2,
The catching phenomenon of piston 4 can be caused, affect the normally-open of overflow valve and close；When foreign body remains in boss 214 and piston 4
Time between contact surface, inclination and the eccentric wear of piston 4 can be caused, affect overflow valve performance.This utility model is by copper-base powder metallurgy
The filter element 6 that material is made can effectively purify air plankton, it is to avoid extraneous foreign body enters overflow valve, affects the most normally opened of overflow valve
Open and close.This filter element 6 is fixed by circlip 7, and it is convenient to dismount, it is easy to regularly replaces and safeguards.
Piston type overflow valve of the present utility model, has following features and an advantage:
1, this piston type overflow valve is in opening process, because piston 4 is metalwork, therefore either opens previous crops for piston
The annular effective area of 4 acts on the circular active area of piston 4 and all keeps constant after being also on, thus pre-at equal spring
Under pressure condition, more can control unlatching value and the close value of overflow valve accurately.
2, after this piston type overflow valve is normally-open, input port 215 and the delivery outlet 216 of valve body 21 can be held on shape
State, empty spring air feed is given in the most lasting guarantee of total wind energy, and along with the change of handling capacity of passengers, empty spring can be by altitude valve air draft to adjust car
Height, prevents vehicle roll to ensure the steady operation of vehicle.When, after K shape sealing ring 5 broken invalid, input pressure can be by defeated
Entrance 215, the gap between air inlet 42 and piston 4 and connecting portion 22 enters in the inner chamber 11 on piston 4 top, thus
The upper surface having pressure to act on piston 4 forms back pressure, and the unlatching pressure of overflow valve so can be caused to increase, under egregious cases,
Overflow valve cannot be opened, and during car operation, after empty spring storage invisible waste is most, car body can be caused to shake, and passenger comfort is significantly
Reduce.To this end, be provided with multiple spout hole 14 being distributed uniformly and circumferentially in the lower end of upper valve body 1, in the connection of lower valve body 2
The upper surface in portion 22 is provided with multiple equally distributed projection 222, thus after ensureing that upper valve body 1 and lower valve body 2 are threaded connection
Remaining with certain gap (namely overflow launder 223), doing so the air pressure for piston 4 upper surface can be overflow by above-mentioned
Discharge orifice 14, overflow launder 223 quickly overflow in air, eliminate the back pressure of piston 4, it is ensured that overflow valve normally-open；
Further, since the area of section of overflow launder 223 is much larger than the area of section of spout hole 14, the foreign body in air can remain overflow
In groove 223, in only small part foreign body can enter spout hole 14, therefore, the design of this overflow launder 223 and spout hole 14 also can phase
Entering the foreign body reduced in air may in inner chamber 11.
3, the boss 214 of the lower valve body 2 of this piston type overflow valve can be used for protecting the sealing property of rubber blanket 43, prevents rubber
The permanent deformation of rubber cushion 43 and damage.After piston type overflow valve of the present utility model is not turned on for a long time, valve port ring 213 and rubber
It is prone to there is adhesion phenomenon between rubber cushion 43, causes overflow valve unlatching value first higher.Along with the increase of overflow valve unlatching value, execute
The precompression being added on spring 32 is also continuously increased, and the precompression of spring 32 is conducted to rubber blanket 43 and valve port ring 213 by piston 4
Between, when precompression exceedes when bearing boundary of rubber blanket 43, and rubber blanket 43 can be caused permanent deformation, so by valve port ring 213
The unlatching value size of overflow valve can be affected；Further, passage or rubber parts are aging over time, and valve port ring 213 can incised wound
Rubber blanket 43, causes rubber blanket 43 damaged, affects the normal switching-off of overflow valve；Further, those boss 214 also can effectively be avoided
Because adjusting the maloperation (such as direction of rotation mistake) of screw 33, rubber blanket 43 is protected.
4, for preventing piston type overflow valve of the present utility model from affecting performance indications under excess pressure, it is ensured that spring 32 exists
Action in limited range, it is ensured that overflow valve working value is reliable and stable, has carried out position limitation protection to piston 4 during upper shifting.I.e.
After being assembled by the threaded engagement of upper valve body 1 with lower valve body 2, with the lower surface of upper valve body 1, the upper surface of piston 4 is carried out stroke
Limit.The trip distance can calculate according to the design size of overflow valve and service pressure, in above-mentioned stroke range,
Upper valve body 1 to be ensured coordinates the machining accuracy in face with piston 4, and after above-mentioned stroke range, upper valve body 1 coordinates the processing essence in face
Degree can suitably reduce, thus reduces processing cost.Further too high air pressure occurs through overflow valve when system exception
Time, too high operating pressure is applied on piston 4 and then acts on the spring 32 on piston 4 top, and the decrement of spring 32 surpasses
Cross Design Theory scope, it is easy to cause the fluctuation up and down of overflow valve working value.
The foregoing is only several embodiment of the present utility model, those skilled in the art is according to disclosed in application documents
Content can carry out various change or modification without deviating from spirit and scope of the present utility model to this utility model embodiment.
Claims (10)
1. a piston type overflow valve, it is characterised in that described piston type overflow valve includes:
Upper valve body, is provided with pressure adjustmenting mechanism in it；
Lower valve body, it has valve body and is connected to the connecting portion of described valve body upper end, and described lower valve body is by described connection
Portion is connected to the lower end of described upper valve body, and the upper surface of described valve body is provided with piston, and described piston is arranged with being vertically movable
In described connecting portion, described pressure adjustmenting mechanism contact in the upper end of described piston, described valve body have input channel and
Output channel, described input channel and described output channel upper surface with described valve body respectively is connected.
2. piston type overflow valve as claimed in claim 1, it is characterised in that described pressure adjustmenting mechanism includes:
Upper spring seat, it is positioned at described upper valve body；
Spring, it is positioned at described upper valve body, the upper end contact of described spring on described upper spring seat, the lower end of described spring
Contact is on described piston；
Adjusting screw, it is connected to the upper end of described upper valve body and stretches in described upper valve body, and described adjustment screw contact is in institute
State on upper spring seat.
3. piston type overflow valve as claimed in claim 1, it is characterised in that the outer rim of described piston is arranged with K shape sealing ring,
The internal ring wall of described K shape sealing ring is formed with ring groove, in described ring groove when charged pressure gas, and described K shape
Sealing ring coordinates with the inner wall sealing of described connecting portion.
4. piston type overflow valve as claimed in claim 1, it is characterised in that the lower end of described upper valve body has external thread section,
The upper end edge circumferencial direction of described external thread section is provided with multiple spout hole, and the inwall of described connecting portion is formed with internal thread segment, institute
Stating internal thread segment and described external thread section bolt, the upper surface of described connecting portion is along the circumferential direction provided with multiple projection, described
Projection contact, on described upper valve body, is formed with overflow launder between the most adjacent described projection, described spout hole overflows with described
Chute connects relatively.
5. piston type overflow valve as claimed in claim 1, it is characterised in that the upper surface of described valve body is convexly equipped with valve port
Ring, described valve port ring is positioned at the outward flange of described output channel, and the lower end of described piston is provided with rubber blanket, described valve port ring and institute
State rubber blanket to be oppositely arranged.
6. piston type overflow valve as claimed in claim 5, it is characterised in that the upper surface of described valve body is the most convex
Being provided with multiple boss, multiple described boss are positioned at the outside of described valve port ring.
7. piston type overflow valve as claimed in claim 1, it is characterised in that described valve body is provided with input port, described defeated
Entrance is connected with described input channel, and described input port is positioned at the sidewall of described valve body or described input port is positioned at described valve
The lower surface of body.
8. piston type overflow valve as claimed in claim 1, it is characterised in that described valve body is provided with delivery outlet, described defeated
Outlet is connected with described output channel, and described delivery outlet is positioned at the sidewall of described valve body or described delivery outlet is positioned at described valve
The lower surface of body.
9. piston type overflow valve as claimed in claim 1, it is characterised in that divide in described input channel and described output channel
It is not provided with filter element.
10. piston type overflow valve as claimed in claim 9, it is characterised in that described filter element is by copper based powder metallurgy material system
Become.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620597232.4U CN205669610U (en) | 2016-06-17 | 2016-06-17 | Piston type overflow valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620597232.4U CN205669610U (en) | 2016-06-17 | 2016-06-17 | Piston type overflow valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205669610U true CN205669610U (en) | 2016-11-02 |
Family
ID=57192487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620597232.4U Active CN205669610U (en) | 2016-06-17 | 2016-06-17 | Piston type overflow valve |
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| Country | Link |
|---|---|
| CN (1) | CN205669610U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109780275A (en) * | 2017-11-13 | 2019-05-21 | 新乡平原航空设备有限公司 | A kind of overflow valve and the Braking System for Multiple Units using the overflow valve |
| CN110030410A (en) * | 2019-03-25 | 2019-07-19 | 西安天拓航空科技有限公司 | A kind of novel unmanned plane oiling decompressor |
| CN110494231A (en) * | 2017-01-20 | 2019-11-22 | 普莱德工程有限责任公司 | Tank bottom beamformer components |
-
2016
- 2016-06-17 CN CN201620597232.4U patent/CN205669610U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110494231A (en) * | 2017-01-20 | 2019-11-22 | 普莱德工程有限责任公司 | Tank bottom beamformer components |
| CN110494231B (en) * | 2017-01-20 | 2022-03-01 | 普莱德工程有限责任公司 | Tank bottom former assembly |
| CN109780275A (en) * | 2017-11-13 | 2019-05-21 | 新乡平原航空设备有限公司 | A kind of overflow valve and the Braking System for Multiple Units using the overflow valve |
| CN110030410A (en) * | 2019-03-25 | 2019-07-19 | 西安天拓航空科技有限公司 | A kind of novel unmanned plane oiling decompressor |
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