CN201988705U - Constant-pressure and constant-flow unit of pneumatic system - Google Patents
Constant-pressure and constant-flow unit of pneumatic system Download PDFInfo
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- CN201988705U CN201988705U CN2010201559299U CN201020155929U CN201988705U CN 201988705 U CN201988705 U CN 201988705U CN 2010201559299 U CN2010201559299 U CN 2010201559299U CN 201020155929 U CN201020155929 U CN 201020155929U CN 201988705 U CN201988705 U CN 201988705U
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- constant current
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Abstract
The utility model discloses a constant-pressure and constant-flow unit of a pneumatic system, which is applied to a compressed air cooling die system of a hub casting machine in order for controlling the constant-pressure and constant-flow of a compressed air cooling system so as to save energy. The constant-pressure and constant-flow unit of the pneumatic system mainly comprises a confluence plate, and a constant-pressure unit, a constant-flow unit connected with the outlet of the constant-pressure unit and a floater flowmeter in threaded connection with the constant-flow unit which are orderly connected to the outlet of the confluence plate. The constant-pressure unit and the constant-flow unit are connected in the die cooling system of a casting machine in series; the constant-pressure unit 6 and the constant-flow unit 7 control the pressure and the flow of the compressed air. The constant-pressure and constant-flow unit of the pneumatic system can be widely applied to the pneumatic system requiring constant flow.
Description
Technical field
The utility model belongs to pneumatic energy-saving field, relates to a kind of compressed air pressure and mass flow can controlled and keeps constant unit.
Background technology
In the pneumatic cooling system of wheel hub casting machine, the flow of mold cools down nozzle is by the aperture control of valve at present.Need the aperture of valve is readjusted behind each replacing cooling jet, waste time and energy.And compressed-air actuated flow-control is inaccurate, causes mould temperature lowering curve gap big, and technological quality is difficult to guarantee.Simultaneously, the frequent operation of valve causes valve leak serious.
The utility model content
The purpose of this utility model is to overcome deficiency of the prior art, and a kind of pressure and constant unit of constant flow that keeps the pipeline compressed air is provided.No matter how upstream pressure changes, and when downstream pressure changed within the specific limits, this unit can guarantee the constant gas flow.Shorten the adjusting time greatly, reduce labour intensity, reduce equipment loss.
The utility model is applicable to the pneumatic cooling system of casting machine die and other any pneumatic systems that has constant pressure constant current amount to require.
The technical scheme that its technical problem that solves the utility model adopts is:
1. after the inlet 3 of cylinder manifold 4 was connected to the ball valve 2 of trunk line 1, the upside of cylinder manifold 4 had the outlet of 13 screwed holes, and by to wire connection 5 and 6 vertical connections of constant voltage unit, constant voltage unit 6 and constant current unit 7 are connected by thread seal; Float-type flowmeter 9 is connected by the outlet of reducer union 8 with constant current unit 7, is connected to bye-pass 11 by reducer union 10 afterwards, and all bye-passes are collected to airduct 12 places, thereby guiding compressed air blows to die material 13.
2. 7 inside, constant current unit are " Lavalle " jet pipes with shrinkage expansion feature.Internal structure according to pressure and traffic requirement calculation Design constant current unit has the shrinkage expansion feature, by the upstream pressure P of control constant current unit
2, make by the downstream pressure P behind the constant current unit
3When changing within the specific limits, can keep stablizing constant by the mass flow of cross-flow units.
The utility model has following advantage: adopt the utility model constant pressure and flow unit can improve the flow control accuracy of pneumatic cooling system greatly, and gas flow can to keep when air inlet and gas outlet pressure change within the specific limits be constant.Thereby guarantee the stability of article handicraft matter, reduce the man power and material.
Description of drawings
Fig. 1 is a constant current constant voltage cellular construction schematic diagram;
Fig. 2 is a constant current unit cutaway view.
In Fig. 1,1. main line, 2. ball valve, 3. inlet, 4. cylinder manifold, 5. pair wire connection head, 6. constant voltage unit, 7. constant current unit, 8. reducer union, 9. float-type flowmeter, 10. reducer union, 11. bye-passes, 12. airducts, 13. die materials.
The specific embodiment
1. constant pressure and flow unit, it mainly comprises and is connected to cylinder manifold 4, constant voltage unit 6, constant current unit 7 and float-type flowmeter 9.It is characterized in that: after the inlet 3 of cylinder manifold 4 was connected to the ball valve 2 of trunk line 1, the upside of cylinder manifold 4 had the outlet of 13 screwed holes, and by to wire connection 5 and 6 vertical connections of constant voltage unit, constant voltage unit 6 and constant current unit 7 are connected by thread seal; Float-type flowmeter 9 is connected by the outlet of reducer union 8 with constant current unit 7, is connected to bye-pass 11 by reducer union 10 afterwards, and all bye-passes are collected to airduct 12 places, thereby guiding compressed air blows to die material.
2. the constant voltage unit is the pressure-reducing valve with pressure stabilization function, and pressure-reducing valve will be exported measuring pressure and feed back to spool, and spool makes the output measuring pressure constant according to the pressure automatic regulating valve core opening of feedback.
3. the constant current unit is " Lavalle " jet pipe with shrinkage expansion feature.
Claims (3)
1. constant pressure and flow unit, it mainly comprises and is connected to cylinder manifold (4), constant voltage unit (6), constant current unit (7) and float-type flowmeter (9).It is characterized in that: after the inlet (3) of cylinder manifold (4) is connected to the ball valve (2) of trunk line (1), the upside of cylinder manifold (4) has (13) individual screwed hole outlet, by to wire connection head (5) and vertical connection of constant voltage unit (6), constant voltage unit (6) are connected by thread seal with constant current unit (7); Float-type flowmeter (9) is connected by the outlet of reducer union (8) with constant current unit (7), be connected to bye-pass (11) by reducer union (10) afterwards, all bye-passes are collected to airduct (12) and locate, thereby guiding compressed air blows to die material (13).
2. a kind of constant pressure and flow according to claim 1 unit is characterized in that: the constant voltage unit is the pressure-reducing valve with pressure stabilization function.
3. a kind of constant pressure and flow according to claim 1 unit is characterized in that: the constant current unit is the Laval nozzle with shrinkage expansion feature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201559299U CN201988705U (en) | 2010-04-12 | 2010-04-12 | Constant-pressure and constant-flow unit of pneumatic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201559299U CN201988705U (en) | 2010-04-12 | 2010-04-12 | Constant-pressure and constant-flow unit of pneumatic system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201988705U true CN201988705U (en) | 2011-09-28 |
Family
ID=44665208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201559299U Expired - Fee Related CN201988705U (en) | 2010-04-12 | 2010-04-12 | Constant-pressure and constant-flow unit of pneumatic system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201988705U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103433468A (en) * | 2013-08-08 | 2013-12-11 | 无锡锦绣轮毂有限公司 | System and method for pressure-assisted metal gravity casting |
-
2010
- 2010-04-12 CN CN2010201559299U patent/CN201988705U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103433468A (en) * | 2013-08-08 | 2013-12-11 | 无锡锦绣轮毂有限公司 | System and method for pressure-assisted metal gravity casting |
| CN103433468B (en) * | 2013-08-08 | 2016-04-27 | 无锡锦绣轮毂有限公司 | The auxiliary pressure gravity casting system of metal mold and casting method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20110928 Termination date: 20160412 |