CN209354453U - A kind of unloading valve - Google Patents
A kind of unloading valve Download PDFInfo
- Publication number
- CN209354453U CN209354453U CN201822091262.XU CN201822091262U CN209354453U CN 209354453 U CN209354453 U CN 209354453U CN 201822091262 U CN201822091262 U CN 201822091262U CN 209354453 U CN209354453 U CN 209354453U
- Authority
- CN
- China
- Prior art keywords
- valve seat
- valve
- spool
- adjustment barrel
- central segment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Safety Valves (AREA)
Abstract
The utility model discloses a kind of unloading valve, including valve seat and spool, the outlet end that the bottom setting of valve seat is used for connection outlet pipe and is connected to valve base cavity, the input end for connecting inlet tube and being connected to valve base cavity is arranged in the side of valve seat；Valve seat includes central segment and ring segment, and spool is set in the central segment, and spring is arranged in ring segment, and the top of spring is limited by being fixed on the spool baffle at the top of spool；Adjustment barrel is arranged in the top of valve seat, adjusts tube inner chamber and is connected to the central segment, is isolated between the inner cavity and valve seat of adjustment barrel by diaphragm, the air inlet that the top setting of adjustment barrel is connected to adjusting tube inner chamber.Utility model can be filled with compressed air by air inlet into adjustment barrel, while can be adjusted at any time the pressure value for being filled with compressed air in adjustment barrel, have changeability, flexibility.
Description
Technical field
The utility model belongs to valve field, especially related with a kind of unloading valve.
Background technique
Existing unloading valve can divide different pressure levels according to its pressure limit.The set-pressure of unloading valve (is opened
Pressure) it is less than the highest receiving pressure of sealing container, when the pressure in sealing container is more than unloading valve set-pressure, unloading valve
It automatically turns on, is resetted after shedding the pressure beyond part, be in the maximum pressure of sealing container within safe range always, with
Guarantee that container is not destroyed by pressure.
Existing draining pump uses substantially fills adjustment spring in adjustment barrel, recycles and adjusts screw and spring top flat to adjust
The decrement of spring requires to reach specified cracking pressure, and there are following deficiencies for this structure: the unlatching of 1. unloading valves
Pressure is fixed；2. adjustment spring is chronically at confined state, deformation can be generated, cracking pressure is caused to become smaller.
Utility model content
For existing issue, the utility model is intended to provide a kind of unloading valve.
For this purpose, the utility model uses following technical scheme: a kind of unloading valve, including valve seat and spool, the bottom of valve seat
The outlet end for being used for connection outlet pipe and being connected to valve base cavity is set, and the side of valve seat is arranged for connecting inlet tube and and valve
The input end of seat inner cavity connection；It is characterized in that the valve base cavity includes central segment and ring segment, the bottom of the central segment
Portion side is connected to the input end, and the bottom of central segment is connected to the outlet end, and the ring segment is around setting
It is isolated in the central segment and by the cavity wall interval of valve seat, the bottom of ring segment is connected to the input end and through institute
The top of the top for the valve seat stated, central segment and ring segment is interconnected, and the spool is set in the central segment, ring
Spring is set in shape section, and the top of spring is limited by being fixed on the spool baffle at the top of spool；The top of valve seat is arranged
Adjustment barrel adjusts tube inner chamber and is connected to the central segment, is isolated between the inner cavity and valve seat of adjustment barrel by diaphragm, adjustment barrel
Top setting and the air inlet that is connected to of adjusting tube inner chamber.Air inlet can connect external compression air, make atmospheric pressure value in adjustment barrel
Specified cracking pressure value is risen to, pipeline gas enters body cavity by valve seat input end, when loine pressure reaches off-load pressure
After power, diaphragm is lifted, and valve port is opened, and the gas in pipeline is discharged by valve port from outlet end.When in pipeline pressure decline,
In adjustment barrel under the action of compressed air, diaphragm decline, valve port is closed, and off-load is completed.
As supplement to above-mentioned technical proposal and perfect, the utility model further includes following technical characteristic.
Step surface is arranged in the top of the valve seat, diaphragm fixing seat is arranged on step end face, the adjustment barrel is fixed
In in the diaphragm fixing seat, the diaphragm is set in the mating surface between adjustment barrel and diaphragm fixing seat.
The annular mounting groove of the top setting indent of the spool, the spool baffle are fixedly installed in annular installation
In slot.
The top of the ring segment is in open form, to facilitate the installation of spring.
The utility model can achieve following the utility model has the advantages that 1, the utility model in the inner cavity of valve seat by being arranged bullet
Spring, the ring segment cooperation limit that spring is arranged by valve seat, so as to avoid existing unloading valve because adjustment spring deformation causes out
The case where pressure becomes smaller is opened, the service life of unloading valve is extended.2, the utility model can pass through the pressure of adjusting compressed air
Value adjusts cracking pressure, pipeline suitable for various pressure.3, it replaces passing with compressed air in the adjustment barrel of the utility model
The mode of setting adjustment spring in the adjustment barrel of system similarly can cause cracking pressure to become smaller to avoid adjustment spring deformation
Situation extends the service life of unloading valve.4, the utility model cracking pressure is stablized, and processing materials are few, and manufacturing procedure is few, at
This is low.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is the valve seat construction schematic diagram of the utility model.
Specific embodiment
Specific embodiment of the present utility model is described in detail with reference to the accompanying drawing.
As Figure 1-Figure 2, a kind of unloading valve of the utility model, including valve seat 1 and spool 2, the bottom of valve seat 1, which is arranged, to be used
In connection outlet pipe 10 and the outlet end 11 that is connected to 1 inner cavity of valve seat, the side setting of valve seat 1 for connect inlet tube 9 and with
The input end 12 of 1 inner cavity of valve seat connection；1 inner cavity of valve seat includes central segment 14 and top is in the ring segment 13 of open form, center
The bottom side of section 14 is connected to the input end 12, and the bottom of central segment 14 is connected to the outlet end 11, ring segment
13 around being set to the central segment 14 and be isolated by the cavity wall interval of valve seat 1, the bottom of ring segment 13 and it is described into
The top of the connection of mouth end 12 and the top for running through the valve seat 1, central segment 14 and ring segment 13 is interconnected, the spool
2 are set in the central segment 14, are arranged spring 3 in ring segment 13, and the top of spring 3 is by being fixed on the top of spool 2
Spool baffle 4 in the annular mounting groove of indent stops limit.
Step surface is arranged in the top of valve seat 1, diaphragm fixing seat 5 is arranged on step end face, 5 set in the diaphragm fixing seat
Adjustment barrel 7 is set, 7 inner cavity of adjustment barrel is connected to the central segment 14, and the top setting of adjustment barrel 7 is connected to 7 inner cavity of adjustment barrel
Air inlet 8, be isolated between the inner cavity and valve seat 1 of adjustment barrel 7 by diaphragm 6, the diaphragm 6 is set to adjustment barrel 8 and film
In mating surface between piece fixing seat 5.
Air inlet 8 can connect external compression air, and atmospheric pressure value in adjustment barrel 7 is made to rise to specified cracking pressure value, pipeline
Gas enters valve base cavity by 1 input end 12 of valve seat, and after loine pressure reaches pressure unloading, diaphragm 6 is lifted, valve port 15
It opens, the gas in pipeline is discharged by valve port 15 from outlet end 11.When the pressure decline in pipeline, compressed in adjustment barrel 7
Under the action of air, diaphragm 6 declines, and valve port 15 is closed, and off-load is completed.
Claims (4)
1. the bottom setting of a kind of unloading valve, including valve seat and spool, valve seat is connected to for connection outlet pipe and with valve base cavity
Outlet end, the input end for connecting inlet tube and being connected to valve base cavity is arranged in the side of valve seat；It is characterized in that described
Valve base cavity includes central segment and ring segment, and the bottom side of the central segment is connected to the input end, central segment
Bottom is connected to the outlet end, and the ring segment surround the cavity wall interval for being set to the central segment and passing through valve seat
Isolation, the bottom of ring segment are connected to and run through the top of the valve seat, the top of central segment and ring segment with the input end
Portion is interconnected；
The spool is set in the central segment, spring is arranged in ring segment, the top of spring is by being fixed on spool
The spool baffle at top limits；Adjustment barrel is arranged in the top of valve seat, adjusts tube inner chamber and is connected to the central segment, adjusts
It is isolated between the inner cavity and valve seat of cylinder by diaphragm, the air inlet that the top setting of adjustment barrel is connected to adjusting tube inner chamber.
2. a kind of unloading valve as described in claim 1, which is characterized in that the top of valve seat is arranged step surface, on step end face
Diaphragm fixing seat is set, the adjustment barrel is fixed in the diaphragm fixing seat, the diaphragm be set to adjustment barrel with
In mating surface between diaphragm fixing seat.
3. a kind of unloading valve as claimed in claim 2, which is characterized in that the annular peace of the top setting indent of the spool
Tankage, the spool baffle are fixedly installed in annular mounting groove.
4. a kind of unloading valve as claimed in claim 3, which is characterized in that the top of the ring segment is in open form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822091262.XU CN209354453U (en) | 2018-12-13 | 2018-12-13 | A kind of unloading valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822091262.XU CN209354453U (en) | 2018-12-13 | 2018-12-13 | A kind of unloading valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209354453U true CN209354453U (en) | 2019-09-06 |
Family
ID=67798951
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822091262.XU Expired - Fee Related CN209354453U (en) | 2018-12-13 | 2018-12-13 | A kind of unloading valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209354453U (en) |
-
2018
- 2018-12-13 CN CN201822091262.XU patent/CN209354453U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190906 Termination date: 20211213 |