CN100529410C - Multifunctional pile-up valve of helical lobe compressor gas path system - Google Patents
Multifunctional pile-up valve of helical lobe compressor gas path system Download PDFInfo
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- CN100529410C CN100529410C CNB2007101903848A CN200710190384A CN100529410C CN 100529410 C CN100529410 C CN 100529410C CN B2007101903848 A CNB2007101903848 A CN B2007101903848A CN 200710190384 A CN200710190384 A CN 200710190384A CN 100529410 C CN100529410 C CN 100529410C
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- valve
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- valve body
- core
- multifunction
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Abstract
The invention relates to a screw compressor air path system multifunctional integrated valve, in particular to an air path system used for the screw compressor. The invention is characterized in that a pressure difference signal switch and an oil gas fine separation filter core are respectively arranged on a multifunctional valve body; one end of a pressing spring tightly presses the oil gas fine separation filter core on the multifunctional valve and the other end of the pressing spring is pressed by an oil gas separation external cover; a high position air guide pipe is connected in the multifunctional valve; a minimum pressure valve core is arranged in the multifunctional valve body by a minimum pressure valve shell; a check valve is arranged at the front end of the minimum pressure valve core which is internally provided with a minimum pressure valve spring; the check valve is tightly pressed on an air discharge port of the multifunctional valve body. The invention has the advantages of little connection pipeline of the whole machine, simple structure, little system leakage points, improving reliability of system, small system volume, low processing cost of elements, little pipeline of interior arrangement of the whole machine, and wide space.
Description
Technical field
The present invention relates to a kind of multifunctional pile-up valve of helical lobe compressor gas path system, specifically be used for the air-channel system of helical-lobe compressor.
Background technique
In prior art, the minimum pressure valve that control mode in the helical-lobe compressor air-channel system normally adopts, oil gas be smart separate filter core, oil gas smart separate filter core differential pressure switch, safety valve by pipeline by certain way, they are coupled together the composition air-channel system, and above-mentioned parts are all for independent separately.Finish system pressure and keep, when the deaerator internal pressure reduces, stop gas refluence in the pipeline, Oil-gas Separation is considered the function of the big warning of core resistance.This kind control mode has the following disadvantages: 1, connecting pipeline is many, and line arrangement is mixed and disorderly, and the space is crowded; 2, system leak point is many, increases the fault point, reduces the reliability of system; 3, components and parts processing cost height; 4, system bulk is big.
Summary of the invention
The objective of the invention is to overcome above-mentioned deficiency, thereby a kind of multifunctional pile-up valve of helical lobe compressor gas path system is provided, its complete machine connecting pipeline is few, and system leak point is few, can improve the reliability of system; System bulk is little, and the space is free from worry, and the components and parts processing cost is low.
Main solution of the present invention is achieved in that
The present invention mainly adopts the pressure reduction switch of posting a letter to be installed on the multifunction valve body, and the smart filter core that separates of oil gas is installed on the multifunction valve body, and holddown spring one end is pressed abd fixed on the smart filter core that separates of oil gas on the multifunction valve body, and the other end is pushed down by the smart outer cover that separates of oil gas; The smart outer cover that separates of oil gas is enclosed in inner chamber with pressed gas, and high-order air entraining pipe is connected in the multifunction valve body; One-way valve is installed on the minimum pressure valve front end, and the two integrated being installed in the multifunction valve body is pressed on by pressing plate, set screw on the vent ports of multifunction valve body.
Described one-way valve is made up of pressing plate, sealing gasket, nonreturn valve core, nonreturn valve core spring.The nonreturn valve core front end is installed the nonreturn valve core spring, and pressing plate, sealing gasket are fastened on the nonreturn valve core by set screw.
Described minimum pressure valve is made up of pressure minimum spool, pressure minimum valve casing, minimum pressure valve spring, at the minimum pressure valve in-core pressure minimum valve spring is installed, and the pressure minimum valve spring is pressed on the pressure minimum spool by the pressure minimum valve casing.
On the described multifunction valve body emergency valve seat is installed, safety valve is installed on the emergency valve seat.
Be respectively equipped with gas mixture inlet A, relief opening G and Oil-gas Separation return opening K on the described multifunction valve body.
Compared with the prior art the present invention has the following advantages:
Because one way stop peturn valve, minimum pressure valve, the smart individual components such as filter core, the smart separation of oil gas filter core differential pressure switch, safety valve that separate of oil gas all are integrated in the valve body, finish: unidirectional non-return, system's pressure minimum maintenance, Oil-gas Separation, the smart big warning of filter core pressure reduction, pressure superelevation, the functions such as discharge of safety valve of separating of oil gas.Be specially: 1, under the open state of unit, can guarantee that the pressure in the unit is not less than the minimum working pressure power of oil circulation.2, when unit energy adjustment and shutdown, stop in the supply air line, pressed gas flows backwards.3, Oil-gas Separation separates out with the oil in the gas of the oil gas admixture after the compression, becomes clean pressurized air.4, the smart impurity that separates the filter core interception of oil gas reaches some, and resistance increases, and its inner differential pressure switch can send the resistance large-signal.5, the complete machine connecting pipeline is few, and is simple in structure; System leak point is few, improves the reliability of system; 6, system bulk is little, and the components and parts processing cost is low; 7, complete machine internal placement pipeline is few, and the space is free from worry.
Description of drawings
Fig. 1 is the overall half sectional view of the present invention.
Fig. 2 is a C-C revolved sectional view of the present invention.
Fig. 3 is a B-B revolved sectional view of the present invention.
Fig. 4 is an A-A sectional view of the present invention.
Embodiment
Following the present invention embodiment in will be in conjunction with the accompanying drawings is further described: the present invention is mainly by the pressure reduction switch 1 of posting a letter, O-ring seals 2, the smart outer cover 3 that separates of oil gas, O-ring seals 4, the smart filter core 5 that separates of oil gas, set screw 6, pressing plate 7, high-order air entraining pipe 8, holddown spring 9, sealing gasket 10, nonreturn valve core 11, multifunction valve body 12, pressure minimum spool 13, O-ring seals 14, pressure minimum valve casing 15, nonreturn valve core spring 16, pressure minimum valve spring 17, O-ring seals 18, pressing plate 19, set screw 20, card yellow 21, safety valve 22, emergency valve seat 23 compositions such as grade.
The present invention mainly adopts the pressure reduction switch 1 of posting a letter directly to be installed on the multifunction valve body 12, pressure before the impression of B chamber separates, and the impression of E chamber separates back pressure.The smart filter core 5 that separates of oil gas directly is installed on the multifunction valve body 12, separates installation O-ring seals 4 between filter core 5 and the multifunction valve body 12 in that oil gas is smart, and O-ring seals 4 seals in the joint.Holddown spring 9 one ends are pressed abd fixed on the smart filter core 5 that separates of oil gas on the multifunction valve body 12, and the other end is pushed down it by the smart outer cover 3 of separating of oil gas.Oil gas is smart to be separated outer cover 3 pressed gas is enclosed in inner chamber, and O-ring seals 2 is installed in that oil gas is smart to be separated between outer cover 3 and the multifunction valve body 12, and the joint seals.High-order air entraining pipe 8 is provided with and is connected in the multifunction valve body 12, and the gas after separating is drawn from eminence.One-way valve is installed on pressure minimum spool 13 front ends.
Described one-way valve is made up of pressing plate 7, sealing gasket 10, nonreturn valve core 11, nonreturn valve core spring 16.At nonreturn valve core 11 front ends nonreturn valve core spring 16 is installed, pressing plate 7, sealing gasket 10 are fastened on the nonreturn valve core 11 by set screw 6.
Described minimum pressure valve is made up of pressure minimum spool 13, pressure minimum valve casing 15, pressure minimum valve spring 17.Nonreturn valve core 11, pressure minimum spool 13 are installed in the multifunction valve body 12 by pressure minimum valve casing 15, and O-ring seals 14 is installed between pressure minimum spool 13 and pressure minimum valve casing 15; O-ring seals 18 is installed between pressure minimum valve casing 15 and multifunction valve body 12.Multifunction valve body 12 1 ends with jump ring 21 block, pressing plate 19 pushes down pressure minimum spool 13, and adopts set screw 20 fastening.Pressure minimum valve spring 17 is installed in pressure minimum spool 13, pressure minimum spool 13 is under the elastic force effect of pressure minimum valve spring 17, one-way valve is pressed on the vent ports of multifunction valve body 12, when the power of gas pressure and atmosphere during greater than the elastic force of pressure minimum valve spring 17, gas backs down one-way valve, pressure minimum spool, discharge, play the effect of maintenance system pressure minimum.When compressor unloading emptying, the E cavity pressure is lower than the F cavity pressure, and one-way valve is shifted to the aperture under the force action of nonreturn valve core spring 16 and refluence gas, the aperture is closed stop pipeline gas to flow backwards, and plays the one-way sealing effect.
Safety valve 22 is installed on the emergency valve seat 23, and emergency valve seat 23 directly is loaded on the multifunction valve body 12.When system pressure surpassed safety valve setting pressure, safety valve was opened the pressurized gas of releasing, and plays the safety protection effect.
Working principle of the present invention
1, owing to adopt the smart filter core that separates of oil gas directly to be loaded on the multifunction integrated valve body, the gas mixture after the compression enters multifunction integrated valve from the A mouth, sees Fig. 3.Arrive the C chamber then through the B chamber, pass through from the smart filter core that separates of oil gas, the oil of separating is drawn recovery from bottom K mouth, sees Fig. 4.Gas after Oil-gas Separation enters from high-order air entraining pipe E, through nonreturn valve core, pressure minimum spool, by the F chamber, discharges from the G mouth, sees Fig. 2.
2, switch 1 directly is loaded on the multifunction integrated valve body because employing pressure reduction is posted a letter.By the inner passage accept respectively oil gas smart separate before the filter core and after pressure signal.Separate the setting value that filter core front and back pressure reduction surpasses differential pressure switch 24 when oil gas is smart, differential pressure switch 24 just sends alarm signal.
3, owing to adopt nonreturn valve core 11, pressure minimum spool 12 directly to be loaded on the multifunction integrated valve body.
When gas will pass through nonreturn valve core 11, pressure minimum spool 12 must restrain multiple minimum pressure valve spring force, passage is opened, so just played the effect that keeps pressure minimum.
When compressor unloading emptying, the E cavity pressure is lower than the F cavity pressure, and nonreturn valve core 11 is shifted to valve seat and made pathway closure, stops gas to flow backwards.
Claims (5)
1, a kind of multifunctional pile-up valve of helical lobe compressor gas path system, comprise pressure reduction smart filter core (5), nonreturn valve core (11), multifunction valve body (12) and the pressure minimum spool (13) of separating of switch (1), oil gas of posting a letter, it is characterized in that adopting the pressure reduction switch (1) of posting a letter to be installed on the multifunction valve body (12), the smart filter core (5) that separates of oil gas is installed on the multifunction valve body (12), holddown spring (9) one ends are pressed abd fixed on the smart filter core (5) that separates of oil gas on the multifunction valve body (12), and the other end is pushed down by the smart outer cover (3) that separates of oil gas; The smart outer cover (3) that separates of oil gas is enclosed in inner chamber with pressed gas, and high-order air entraining pipe (8) is connected in the multifunction valve body (12); One-way valve is installed on the minimum pressure valve front end, and the two integrated being installed in the multifunction valve body (12) is pressed on the vent ports of multifunction valve body (12) by pressing plate (19).
2, multifunctional pile-up valve of helical lobe compressor gas path system according to claim 1, it is characterized in that described one-way valve is made up of pressing plate (7), sealing gasket (10), nonreturn valve core (11), nonreturn valve core spring (16), at nonreturn valve core (11) front end nonreturn valve core spring (16) is installed, pressing plate (7), sealing gasket (10) are fastened on the nonreturn valve core (11) by set screw (6).
3, multifunctional pile-up valve of helical lobe compressor gas path system according to claim 1, it is characterized in that described minimum pressure valve is made up of pressure minimum spool (13), pressure minimum valve casing (15), pressure minimum valve spring (17), pressure minimum valve spring (17) is installed in pressure minimum spool (13), and pressure minimum valve spring (17) is pressed on the pressure minimum spool (13) by pressure minimum valve casing (15).
4, multifunctional pile-up valve of helical lobe compressor gas path system according to claim 1 is characterized in that upward installation emergency valve seat (23) of described multifunction valve body (12), and safety valve (22) is installed on the emergency valve seat (23).
5,, it is characterized in that being respectively equipped with on the described multifunction valve body (12) gas mixture inlet (A), relief opening (G) and Oil-gas Separation return opening (K) according to claim 1 or 4 described multifunctional pile-up valve of helical lobe compressor gas path system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101903848A CN100529410C (en) | 2007-11-27 | 2007-11-27 | Multifunctional pile-up valve of helical lobe compressor gas path system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101903848A CN100529410C (en) | 2007-11-27 | 2007-11-27 | Multifunctional pile-up valve of helical lobe compressor gas path system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101158357A CN101158357A (en) | 2008-04-09 |
| CN100529410C true CN100529410C (en) | 2009-08-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007101903848A Expired - Fee Related CN100529410C (en) | 2007-11-27 | 2007-11-27 | Multifunctional pile-up valve of helical lobe compressor gas path system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100529410C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113847746B (en) * | 2021-09-24 | 2023-03-31 | 浙江沃克制冷设备有限公司 | High-power two-stage screw refrigerating unit |
| CN114215789A (en) * | 2021-12-06 | 2022-03-22 | 中国航发沈阳发动机研究所 | Air entraining structure of double-layer casing |
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2007
- 2007-11-27 CN CNB2007101903848A patent/CN100529410C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN101158357A (en) | 2008-04-09 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090819 Termination date: 20161127 |
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| CF01 | Termination of patent right due to non-payment of annual fee |