CN206889774U - Exhaust pressure relief valve - Google Patents
Exhaust pressure relief valve Download PDFInfo
- Publication number
- CN206889774U CN206889774U CN201720578071.9U CN201720578071U CN206889774U CN 206889774 U CN206889774 U CN 206889774U CN 201720578071 U CN201720578071 U CN 201720578071U CN 206889774 U CN206889774 U CN 206889774U
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- valve
- base
- pressure relief
- exhaust pressure
- cavity
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Abstract
The utility model provides a kind of exhaust pressure relief valve, including：Valve base；The valve body coordinated with the valve base, the valve body combine to form a cavity with the valve base；Valve seat and valve bonnet in the cavity, the valve seat and valve bonnet are brought into close contact and form an accommodation space；Valve ball in the accommodation space, the up and down motion of the valve ball are highly less than or equal to 0.5mm.The utility model eliminates the gasket seal between valve seat and valve bonnet so that the falling height reduction of valve ball, so that the fall velocity of valve ball is accelerated, avoids the backflow of gas.
Description
Technical field
The equipment that the utility model is related to conveying metering, more particularly to a kind of exhaust pressure relief valve.
Background technology
Hydraulic diaphragm metering pump is a kind of diaphragm-type reciprocating pump, is widely used in oil, natural gas, chemical industry, atom
Scientific research and the production departments such as energy technology, power plant, papermaking, plastics, food, medicine, environmental protection, drinking-water, sewage disposal, weaving and mine
Door.Its operation principle is：Motor driven worm gear, the reciprocal fortune by inclined mechanism by the convert rotational motion of motor into plunger
It is dynamic, hydraulic oil is promoted by the reciprocating motion of plunger, hydraulic oil promotes barrier film to move reciprocatingly to realize the suction of medium and discharge.
Due to applying more exhaust pressure relief valve at present, when it is applied in measuring pump, because valve ball commencing height is big,
Falling time length after rise, it, which exists, is vented the shortcomings that unclean, complicated, in real work, when pump head sealing variation be present,
Gas enters rear pump head R chambers under negative suction, and portion gas is isolated from fluid, that is to say, that barrier film both sides are present
Pressure difference, when induction stroke terminates and when discharge stroke not yet starts, barrier film can be close on R plates, and pressure difference is still present, barrier film
It can still be extruded by the pressure difference, cause barrier film compressive deformation, or even rupture.Diaphragm deflection will acutely have a strong impact on barrier film
The measuring accuracy of pump, and membrane ruptures will make measuring pump can not normal work.
Utility model content
In order to solve the technical problem, the utility model provides a kind of exhaust pressure relief valve, for solving in the prior art
Gas backstreaming, exhaust do not cause film compressive deformation totally, or even the problems such as rupture.
In order to solve the above problems, the utility model provides a kind of exhaust pressure relief valve, including：
Valve base；The valve body coordinated with the valve base, the valve body combine to form a cavity with the valve base；It is located at
Valve seat and valve bonnet in the cavity, the valve seat and valve bonnet are brought into close contact and form an accommodation space；Located at the accommodating sky
Interior valve ball, the movable height of the valve ball are less than or equal to 0.5mm.
Further improvement of the utility model is that the valve base is provided with into gas channel, it is described enter gas channel
It is connected through the valve seat and the valve bonnet with the cavity, the valve ball enters in gas channel described in.
Further improvement of the utility model is that the valve base is provided with spill port, and the valve body is provided with oil return
Passage, the drainback passage connect the spill port and the cavity.
Further improvement of the utility model is that the valve base has the lug boss stretched into the valve body, described
Two O-rings are provided between valve body and the valve base.
Further improvement of the utility model is, one of O-ring on the madial wall of the valve body with it is described
Lug boss is tightly connected, and another O-ring is tightly connected on the bottom surface of the valve body with the valve base.
Further improvement of the utility model is, valve core case and valve element cover, the valve core case are additionally provided with the cavity
On the valve base, the valve element cover screws togather with the valve core case, and the valve seat and the valve bonnet are located at the valve element cover
Between the valve core case.
Further improvement of the utility model is, in addition to valve element pad, located at the valve element cover and the valve seat with
And between the valve core case and the valve seat.
Further improvement of the utility model is, also includes spring base, spring and adjusting nut, the spring base
On the valve element cover, for the spring on the spring base, the adjusting nut compresses the spring and the valve body
Screw togather.
Further improvement of the utility model is, in addition to oil mirror, is screwed together with the valve body, the oil mirror and institute
State valve body and form air chamber, sealing ring is additionally provided between the valve body and oil mirror.
Further improvement of the utility model is that the cavity is oil-gas separation chamber, the accommodation space and the valve
Oil gas inverting chamber is formed between ball.
The utility model is compared to the beneficial effect of prior art：
The utility model eliminates gasket seal sealing, and end face static seal is used between valve bonnet and valve seat, controls valve ball
Commencing height is no more than 0.5mm, and so as to control the falling time of valve ball, exhaust is rapid, prevents gas backstreaming, and then use is being counted
When measuring pump, avoid damaging the barrier film of measuring pump.
Brief description of the drawings
Fig. 1 is the schematic diagram of the exhaust pressure relief valve in the utility model；
Fig. 2 is the operating diagram of the exhaust pressure relief valve in the utility model.
Reference
1st, exhaust pressure relief valve；11st, valve base；12nd, valve body；13rd, valve core case；14th, valve seat；15th, valve bonnet；16th, valve element cover；
17th, valve ball；18th, O-ring；19th, valve element pad；20th, spring base；21st, spring；22nd, adjusting nut；23rd, oil mirror；24th, sealing ring；
2nd, plunger；3rd, barrier film；4th, R plates；1-0, oil-gas separation chamber；1-1, oil gas inverting chamber；1-2, enter gas channel；1-3, air chamber；
2-1, spill port；2-2, drainback passage；3-1, oil pocket.
Embodiment
Below in conjunction with accompanying drawing, and other technical characteristic above-mentioned to the utility model and advantage are carried out clearly and completely
Description, it is clear that described embodiment is only section Example of the present utility model, rather than whole embodiments.
The utility model provides a kind of exhaust pressure relief valve.It is provided between the valve bonnet and valve seat of traditional exhaust pressure relief valve close
Gasket, so valve ball in take-off, can increase the commencing height of the thickness of a gasket seal, so as to cause valve ball falling after rise
When, the falling time is longer, so when exhaust pressure relief valve action is in measuring pump, the falling time length of valve ball will cause measuring pump
On barrier film can be close on R plates, there is pressure difference in the both sides of barrier film, receive the extruding of pressure difference, so can cause barrier film by buckling
Shape, or even rupture.And diaphragm deflection will seriously influence the measuring accuracy of pump, or even make measuring pump can not normal work.This practicality
Gasket seal between new cancellation valve seat and valve bonnet, using end face static seal, so as to control valve ball to fall the time after rise, prevent gas from returning
Stream.Exhaust pressure relief valve of the present utility model is illustrated below in conjunction with the accompanying drawings.
The utility model is a kind of exhaust pressure relief valve, as shown in figure 1, including valve base 11, valve body 12, valve seat 14, valve bonnet
15 and valve ball 17.Wherein, valve body 12 and valve base 11 are connected, and a sky is formed between valve body 12 and valve base 11
Chamber, valve seat 14 and valve bonnet 15 are just equipped with the cavity, and the joint face of valve seat 14 and valve bonnet 15 is smooth so that both can be with
Static seal is realized, valve seat 14 there are two, and centre is provided with a valve bonnet 15, and an accommodating sky is formd between valve seat 14 and valve bonnet 15
Between, valve ball 17 is placed in the accommodation space, and valve ball 17 is less than equal to 0.5mm in upper and lower commencing height so that valve ball
17 falling time is also very short, it is therefore prevented that gas backstreaming.
It is provided with valve base 11 into gas channel 1-2, this enters gas channel 1-2 and passes through valve seat 14, valve bonnet 15 and valve
The cavity that base 11 forms with valve body is connected, and gas mixture enters gas channel 1-2 by this and entered in cavity, and is located at
Valve ball 17 between valve seat 14, valve bonnet 15 is also on gas channel 1-2 is entered.When the pressure for entering gas channel 1-2 is less than valve ball 17
During the gravity of itself, valve ball is blocked into gas channel 1-2；When the pressure for entering gas channel 1-2 is more than valve ball 17 gravity of itself
When, this enters in gas channel 1-2 for gas mixture entrance, will promote the take-off of valve ball 17.
Spill port 2-1 is additionally provided with valve base 11, and drainback passage 2-2 is provided with valve body 12, spill port 2-1 and return
Oily passage 2-2 one end connection, the drainback passage 2-2 other end are connected with cavity, and the fluid in cavity is due to the work of gravity
With flowing out, and flowed out by spill port 2-1 from drainback passage 2-2.
In order to ensure the sealing property between valve base 11 and valve body 12, two are provided between valve body 12 and valve base 11
Individual O-ring 18.One of O-ring 18, which is arranged on the madial wall of valve body 12, is provided with an O-ring 18, and in valve body 12
Bottom be also equipped with an O-ring 18, be then tightly connected with valve base 11.
Valve element cover 16 and valve core case 13 are additionally provided with the cavity that valve body 12 and valve base 11 form, wherein, valve core case 13
It is close to be arranged on valve base 11, and valve element cover 16 is connected by way of screwing togather with valve core case 13, therebetween
A space is formed, valve seat 14 and valve bonnet 15 are arranged in the space.A spring base 20 is provided with the top of valve element cover 16, there is one
Root spring 21 is arranged on the spring base 20, then with a holddown spring 21 of adjusting nut 22 and is screwed on valve on spring 21
Opening on body 12.An oil mirror 23 screwed togather with valve body 12, oil mirror 23 and valve body 12 are provided with the top of adjusting nut 22
Between formed an air chamber 1-3, in order to ensure sealing effectiveness, a sealing ring 24 is provided between valve body 12 and oil mirror 23.
The cavity that valve body 12 and valve base 11 form be oil-gas separation chamber 1-0, valve seat 14 and valve bonnet 14 and valve ball 17 it
Between form oil gas inverting chamber 1-1.
As preferred embodiment of the present utility model, after the exhaust pressure relief valve 1 is loaded into measuring pump, operation principle is as follows：
Induction stroke：When plunger 2 moves backward, the increase of oil pocket 3-1 volumes, negative pressure being produced, barrier film 3 moves backward, during this,
Barrier film 3 promotes limit valve to move backward, and when limit valve moves to certain position, repairing pipeline is connected, in connector oil pocket 3-1
Oil is transported in oil pocket 3-1 by oil under atmospheric pressure effect, but during the recovery of oil pocket 3-1 pressure, the stop motion of barrier film 3.This process
In, due to having negative pressure process in oil pocket 3-1, it is dissolved in oil dissolved gas and isolates on a small quantity, in the case of pump head sealing variation, portion
Divide gas from R plates 4 with being penetrated into pump head gap.
Compression stroke：When plunger 2 moves forward, oil pocket 3-1 smaller volumes, high pressure being produced, barrier film travels forward, this
During, because gas caused by induction stroke moves upwards, in the high-pressure oil passage being present in, under high pressure effect, whole gas
Body is aggregated into gas channel, plunger 2 with partial high pressure oil and moved forward, and pressure continues to raise, and reaches certain pressure value
When, the take-off of valve ball 17,0.1~0.2mm of commencing height, oil gas enters oil gas inverting chamber 1-1, and this process enters gas channel 1-2 pressures
When power is less than 17 self gravitation of valve ball, valve ball 17 falls, and blocks into gas channel 1-2, and the gas in oil gas inverting chamber is normal
Under atmospheric pressure insoluble in oil, wink passage float, into oil-gas separation chamber 1-0, pass through screw thread between adjusting nut 22 and valve body 12
Gap enters air chamber 1-3, and now, oil-gas separation chamber 1-0 fluid increase, oil-gas separation chamber 1-0 inner fluids are made due to gravity
Flowed back to by drainback passage 2-2 in normal pressure oil circuit connector oil pocket, play Quick air-discharge during this, protect the work of barrier film
With.
When in compression process, when oil pressure reaches safety value, the take-off of valve ball 17, upper valve base 14, related jack-up valve element pad are jacked up
Piece 19, valve element cover 16, spring base 20, valve core case 13 and the screw threads for fastening of valve element cover 16, valve core case 13 are jacked up simultaneously, a large amount of high pressures
Fluid flows into oil-gas separation chamber 1-0, and gas, which floats, enters air chamber 1-3, and fluid flows back to pump head normal pressure oil into drainback passage 2-2
Road connector oil pocket, play a part of exhaust pressure relief, ensure measuring pump normal operation, protect the effect of barrier film 3.
The utility model is sealed by eliminating conventional gasket seal, and end face static seal is used between valve bonnet and valve seat,
The commencing height of control valve ball is no more than 0.5mm, and so as to control the falling time of valve ball, exhaust is rapid, prevents gas backstreaming, enters
And use avoids damaging the barrier film of measuring pump in measuring pump.
Particular embodiments described above, the purpose of this utility model, technical scheme and beneficial effect are carried out to enter one
The detailed description of step, it will be appreciated that the foregoing is only specific embodiment of the utility model, be not used to limit this reality
With new protection domain.Particularly point out, to those skilled in the art, it is all the spirit and principles of the utility model it
It is interior, any modification, equivalent substitution and improvements done etc., it should be included within the scope of protection of the utility model.
Claims (10)
- A kind of 1. exhaust pressure relief valve, it is characterised in that including：Valve base；The valve body coordinated with the valve base, the valve body combine to form a cavity with the valve base；Valve seat and valve bonnet in the cavity, the valve seat and valve bonnet are brought into close contact and form an accommodation space；AndValve ball in the accommodation space, the movable height of the valve ball are less than or equal to 0.5mm.
- 2. exhaust pressure relief valve according to claim 1, it is characterised in that the valve base is provided with into gas channel, institute It is connected after stating into gas channel through the valve seat and the valve bonnet with the cavity, the valve ball enters oil gas described in and led to In road.
- 3. exhaust pressure relief valve according to claim 1, it is characterised in that the valve base is provided with spill port, the valve Body is provided with drainback passage, and the drainback passage connects the spill port and the cavity.
- 4. exhaust pressure relief valve according to claim 1, it is characterised in that the valve base, which has, to be stretched into the valve body Lug boss, two O-rings are provided between the valve body and the valve base.
- 5. exhaust pressure relief valve according to claim 4, it is characterised in that one of O-ring is interior located at the valve body It is tightly connected in side wall with the lug boss, another O-ring seals on the bottom surface of the valve body with the valve base to be connected Connect.
- 6. exhaust pressure relief valve according to claim 1, it is characterised in that be additionally provided with valve core case and valve element in the cavity Cover, the valve core case is on the valve base, and the valve element cover is screwed togather with the valve core case, and the valve seat and the valve bonnet are set Between the valve element cover and the valve core case.
- 7. exhaust pressure relief valve according to claim 6, it is characterised in that also including valve element pad, located at the valve element cover Between the valve seat and the valve core case and the valve seat.
- 8. exhaust pressure relief valve according to claim 6, it is characterised in that also including spring base, spring and adjusting nut, The spring base is on the valve element cover, and for the spring on the spring base, the adjusting nut compresses the spring Screwed togather with the valve body.
- 9. exhaust pressure relief valve according to claim 1, it is characterised in that also including oil mirror, it is screwed together with the valve body, The oil mirror and the valve body form air chamber, and sealing ring is additionally provided between the valve body and oil mirror.
- 10. exhaust pressure relief valve according to claim 1, it is characterised in that the cavity is oil-gas separation chamber, described accommodating Oil gas inverting chamber is formed between space and the valve ball.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720578071.9U CN206889774U (en) | 2017-05-22 | 2017-05-22 | Exhaust pressure relief valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720578071.9U CN206889774U (en) | 2017-05-22 | 2017-05-22 | Exhaust pressure relief valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206889774U true CN206889774U (en) | 2018-01-16 |
Family
ID=61319862
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720578071.9U Active CN206889774U (en) | 2017-05-22 | 2017-05-22 | Exhaust pressure relief valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206889774U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106969174A (en) * | 2017-05-22 | 2017-07-21 | 德帕姆(杭州)泵业科技有限公司 | Exhaust pressure relief valve |
-
2017
- 2017-05-22 CN CN201720578071.9U patent/CN206889774U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106969174A (en) * | 2017-05-22 | 2017-07-21 | 德帕姆(杭州)泵业科技有限公司 | Exhaust pressure relief valve |
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