CN202250869U - Gas circuit control system of screw compressor - Google Patents
Gas circuit control system of screw compressor Download PDFInfo
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- CN202250869U CN202250869U CN2011203361450U CN201120336145U CN202250869U CN 202250869 U CN202250869 U CN 202250869U CN 2011203361450 U CN2011203361450 U CN 2011203361450U CN 201120336145 U CN201120336145 U CN 201120336145U CN 202250869 U CN202250869 U CN 202250869U
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Abstract
The utility model discloses a gas circuit control system of a screw compressor, which comprises a gas inlet valve, and a control interface is arranged on the screw compressor in a position near to an exhaust end port; the gas inlet valve is provided with a gas inlet port, an exhaust port, and a control port; the control interface is connected with the control port through a valve, and a path of compressor gas is led to the control port of the gas inlet valve by the control port to control the open/close of the gas inlet valve. The gas circuit control system provided by the utility model has a small load when getting started, the gas inlet valve is quick responded, and the start current is reduced effectively; meanwhile, the gas inlet valve is nearer to the compressor main body than a separator, so that the structure is simple and the space is compact; besides, the gas circuit control system can be used in a large-power screw compressor.
Description
Technical field
The utility model belongs to the Compressor Technology field, relates to a kind of screw air compressor, relates in particular to a kind of control air-channel system of screw air compressor.
Background technique
Typical screw air compressor air-channel system mainly is made up of air filter, suction valve, atmospheric valve, solenoid valve, screw rod head, deaerator, minimum pressure valve, thermostat valve, oil purifier, oil return check valve etc.Compressed-air actuated pressure is detected by pressure switch and realizes adding the automatic control of unloading through solenoid valve.
Concerning normally open solenoid valve: when reaching capping, suction valve cuts out with atmospheric valve and opens, and makes compressor unloading; When dropping to the setting threshold pression, then opposite, INO and atmospheric valve are closed, and make compressor loads.Adopt minimum pressure valve, guarantee that the satisfied lubricant oil of setting up of pressure in the deaerator flows and the needed minimum oil pressure of suction valve control gas circuit.
Air intake control valve generally has Normally closed type and two kinds open in usual, and wherein the latter more and more receives an acclaim owing to have advantages of simple structure and simple.
In prior art, suction valve open in usual close power resources in deaerator, there is following deficiency in this kind mode:
(1) behind the compressor start, the deaerator build-up pressure needs a process, and can not in time close suction valve this moment, and inrush current is increased.
(2) system complex, volume is big, and cost is high.
(3) be not suitable on powerful screw air compressor, using.
The model utility content
The utility model technical problem to be solved is: a kind of control air-channel system of screw air compressor is provided, and its connecting pipeline is simple, and system reliability is high; System bulk is little, and the components and parts cost is low.
For solving the problems of the technologies described above, the utility model adopts following technological scheme:
A kind of control air-channel system of screw air compressor, said system comprises suction valve, said screw air compressor is provided with a control interface near exhaust port; Said suction valve is provided with suction port, relief opening, control mouth; Said control interface connects said control mouth through a valve, draws the control mouth of one road pressurized gas to said suction valve through this control interface, controls closing and opening of suction valve.
As a kind of preferred version of the utility model, said suction valve further is provided with leakage port, and said leakage port connects relief opening; Said control interface connects said control mouth, leakage port respectively through said valve.
As a kind of preferred version of the utility model, said valve is a solenoid valve; Said system further comprises throttle valve, one-way valve, and the two ends of said throttle valve connect the O mouth of control mouth and solenoid valve respectively, and the two ends of said one-way valve connect the R mouth of leakage port and solenoid valve respectively; Said control interface is connected with the P mouth of solenoid valve, and solenoid valve is communicated with O mouth or R mouth through break-make electric control P mouth.Said solenoid valve can be the two-position three way normally open solenoid valve.
As a kind of preferred version of the utility model, said suction valve is a suction valve open in usual; Said suction valve further comprises valve body, cylinder, piston, Returnning spring, check spring, cylinder head, valve block and top cover; Said top cover is fixedly connected with valve body, and said check spring is arranged in the cylinder, and said Returnning spring is arranged on outside the cylinder; Said suction port links to each other with the empty filter of air inlet, and the air outlet links to each other with the air inlet port of screw air compressor; Said valve block is near the top cover setting, in order to the break-make of control suction valve.
As a kind of preferred version of the utility model, said screw air compressor is a threaded coupling near the control interface of exhaust port setting.
Particularly, during the coil electricity of solenoid valve, solenoid valve is opened, and control gas gets into the control mouth of suction valve, thereby promotes the action of reset spring of compressor, closes suction valve; Otherwise, when coil blackout, closed electromagnetic valve, at this moment, the control gas that gets into suction valve control mouth returns the leakage port of letting out suction valve, and this mouthful communicates with the air outlet of suction valve and links to each other.Use this scheme, after screw air compressor starts, set up the adjusting mouth that fast control gas to be introduced suction valve behind the pressure in the compression chamber, promote to move on the piston and close suction valve, thereby reduce air inflow, avoid inrush current too high.
The control air-channel system of the utility model screw air compressor compared with prior art has the following advantages: (1) load when starting is little, and suction valve is swift in response, and effectively reduces inrush current; (2) machine host is nearer than separator because the suction valve tripping contracts, thereby simple in structure, and the space is compact; (3) the utility model also can use on powerful screw air compressor.
Description of drawings
Fig. 1 is the composition schematic representation of the utility model screw air compressor suction valve control open in usual air-channel system.
Fig. 2 is the structural representation of the utility model;
Description of reference numerals:
1, suction valve; 2, throttle orifice;
3, two-position three way magnetic valve open in usual; 4, screw-rod air compressor main frame;
5, one-way valve; 11, valve seat;
12, piston; 13, Returnning spring;
14, check spring; 15, cylinder head;
16, valve block; 17, top cover;
The suction port of A, suction valve; The air outlet of B, suction valve;
The control mouth of C, suction valve; The leakage port of D, suction valve;
The exhaust port of E, screw air compressor host; The suction port of F, screw air compressor host;
G, control interface.
Embodiment
Specify the preferred embodiment of the utility model below in conjunction with accompanying drawing.
Embodiment one
See also Fig. 1, Fig. 1 has disclosed a kind of mode of execution of the control air-channel system of the utility model screw air compressor, opens a control interface G at compressor host 4 cavitys near exhaust port E, and gas pressure approaches the exhaust pressure of compressor here.Through pipeline this control interface is connected to the P mouth of a two-position three way magnetic valve 3 open in usual then; Except that the P interface; This solenoid valve 3 also has R mouth and O mouth, and wherein the O mouth is connected to the control mouth C of suction valve 1 through throttle orifice 2, and the R mouth is connected to the leakage port D of suction valve 1 through an one-way valve 5; The effect of one-way valve 5 here is to guarantee that gas can only flow to leakage port D from a control mouthful C, rather than opposite.
Wherein, above-mentioned suction valve 1 is open in usual, and its typical structure is as shown in Figure 2, and its main structure comprises: valve body 11, piston 12, Returnning spring 13, check spring 14, cylinder head 15, valve block 16 and top cover 17, etc.Said top cover 17 is fixedly connected with valve body 11, and said check spring 14 is arranged in the cylinder, and said Returnning spring 13 is arranged on outside the cylinder.Said valve block 16 is provided with near top cover 17, in order to the break-make of control suction valve.
In addition, this valve 1 has four interfaces at least: suction port A links to each other with the empty filter of air inlet; Air outlet B links to each other with the air inlet port of air compressor; Control mouthful C links to each other with the O mouth of above-mentioned solenoid valve 3 through throttle orifice 2; Leakage port D links to each other with the R mouth of above-mentioned solenoid valve 3 through one-way valve 5.
The working principle of the utility model is:
When screw air compressor host 4 begins to start; Aforesaid two-position three way magnetic valve open in usual 3 dead electricity are in off state; Get into the suction port A of suction valve 1 from the next air of inlet air filter; Push valve block 16 open, the inner chamber that process valve seat 11 and top cover 17 are formed arrives the relief opening B of suction valve 1, gets into the air inlet port F of screw air compressor host 4 then; Gas is squeezing the process toward the compression of exhaust end E from inlet end F, and pressure progressively raises; When gas reached the position of the above-mentioned open pore mouth G of institute, a part of gas got into aforesaid solenoid valve 3; Then, very fast solenoid valve 3 the electric on-state (P mouth and O mouth are connected) that is in, control the control mouth C of air-flow at this moment, thereby make that the piston 12 of suction valve 1 is up and close suction valve 1 to suction valve 1.
Behind screw air compressor host 4 normal startups, above-mentioned solenoid valve 3 dead electricity are closed, and the O mouth breaks off with the P mouth and links to each other with the R mouth, and at this moment, the control gaseous that gets in the suction valve 1 will be let out leakage port D through one-way valve 5 from the control mouth C of suction valve 1.
When screw air compressor host 4 quit work, no longer during air feed because aforesaid solenoid valve 3 is in normally open, the gas that suction valve is 1 li can not flow backwards in the compression chamber of screw air compressor host 4.
Embodiment two
Present embodiment discloses a kind of control air-channel system of screw air compressor, and said system comprises suction valve, and said screw air compressor is provided with a control interface near exhaust port; Said suction valve is provided with suction port, relief opening, control mouth; Said control interface connects said control mouth through a valve, draws the control mouth of one road pressurized gas to said suction valve through this control interface, controls closing and opening of suction valve.Said valve can be other valves except that solenoid valve.
In sum, load was little when the control air-channel system of the screw air compressor that the utility model proposes started, and suction valve is swift in response, and effectively reduced inrush current; Simultaneously, machine host is nearer than separator because the suction valve tripping contracts, thereby simple in structure, and the space is compact; In addition, the utility model also can use on powerful screw air compressor.
Here description of the utility model and application is illustrative, is not to want the scope of the utility model is limited in the above-described embodiments.Here the embodiment's who is disclosed distortion and change are possible, and embodiment's replacement is known with the various parts of equivalence for those those of ordinary skill in the art.Those skilled in the art are noted that under the situation of spirit that does not break away from the utility model or substantive characteristics, and the utility model can be with other form, structure, layout, ratio, and realize with other assembly, material and parts.Under the situation that does not break away from the utility model scope and spirit, can carry out other distortion and change here to the embodiment who is disclosed.
Claims (6)
1. the control air-channel system of a screw air compressor is characterized in that, said system comprises suction valve, and said screw air compressor is provided with a control interface near exhaust port;
Said suction valve is provided with suction port, relief opening, control mouth; Said control interface connects said control mouth through a valve, draws the control mouth of one road pressurized gas to said suction valve through this control interface, controls closing and opening of suction valve.
2. the control air-channel system of screw air compressor according to claim 1 is characterized in that:
Said suction valve further is provided with leakage port, and said leakage port connects relief opening; Said control interface connects said control mouth, leakage port respectively through said valve.
3. the control air-channel system of screw air compressor according to claim 2 is characterized in that:
Said valve is a solenoid valve;
Said system further comprises throttle valve, one-way valve, and the two ends of said throttle valve connect the O mouth of control mouth and solenoid valve respectively, and the two ends of said one-way valve connect the R mouth of leakage port and solenoid valve respectively;
Said control interface is connected with the P mouth of solenoid valve, and solenoid valve is communicated with O mouth or R mouth through break-make electric control P mouth.
4. the control air-channel system of screw air compressor according to claim 3 is characterized in that:
Said solenoid valve is the two-position three way normally open solenoid valve.
5. according to the control air-channel system of the described screw air compressor of one of claim 1 to 4, it is characterized in that:
Said suction valve is a suction valve open in usual; Said suction valve further comprises valve body, cylinder, piston, Returnning spring, check spring, cylinder head, valve block and top cover;
Said top cover is fixedly connected with valve body, and said check spring is arranged in the cylinder, and said Returnning spring is arranged on outside the cylinder;
Said suction port links to each other with the empty filter of air inlet, and the air outlet links to each other with the air inlet port of screw air compressor; Said valve block is near the top cover setting, in order to the break-make of control suction valve.
6. according to the control air-channel system of the described screw air compressor of one of claim 1 to 4, it is characterized in that: said screw air compressor is a threaded coupling near the control interface of exhaust port setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203361450U CN202250869U (en) | 2011-09-08 | 2011-09-08 | Gas circuit control system of screw compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203361450U CN202250869U (en) | 2011-09-08 | 2011-09-08 | Gas circuit control system of screw compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202250869U true CN202250869U (en) | 2012-05-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203361450U Expired - Lifetime CN202250869U (en) | 2011-09-08 | 2011-09-08 | Gas circuit control system of screw compressor |
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| CN (1) | CN202250869U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103541889A (en) * | 2012-07-17 | 2014-01-29 | 北越工业株式会社 | Absorption structure of compressor |
| CN105673498A (en) * | 2016-04-01 | 2016-06-15 | 浙江开山凯文螺杆机械有限公司 | Screw compressor with normally-open intake valve, and start method thereof |
| CN105840514A (en) * | 2016-04-01 | 2016-08-10 | 浙江开山凯文螺杆机械有限公司 | Two-stage screw compressor with normally-open air intake valve and start method of two-stage screw compressor |
| CN107917079A (en) * | 2017-11-14 | 2018-04-17 | 江西风石压缩机有限公司 | A kind of screw air compressor intake valve |
| CN109098971A (en) * | 2017-06-21 | 2018-12-28 | 阿特拉斯·科普柯空气动力股份有限公司 | Inlet valve and compressor and compressor element equipped with inlet valve |
| CN109281820A (en) * | 2017-07-21 | 2019-01-29 | 浙江盾安轨道交通设备有限公司 | The intaking valve structure of air compressor machine |
| CN112879298A (en) * | 2021-01-22 | 2021-06-01 | 重庆开山流体机械有限公司 | Control mechanism of vacuum pumping system |
| CN113847746A (en) * | 2021-09-24 | 2021-12-28 | 浙江沃克制冷设备有限公司 | High-power two-stage screw refrigerating unit |
| CN115977956A (en) * | 2023-01-04 | 2023-04-18 | 广东标顶技术股份有限公司 | Air compressor air path system and control method thereof |
-
2011
- 2011-09-08 CN CN2011203361450U patent/CN202250869U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103541889A (en) * | 2012-07-17 | 2014-01-29 | 北越工业株式会社 | Absorption structure of compressor |
| CN105673498A (en) * | 2016-04-01 | 2016-06-15 | 浙江开山凯文螺杆机械有限公司 | Screw compressor with normally-open intake valve, and start method thereof |
| CN105840514A (en) * | 2016-04-01 | 2016-08-10 | 浙江开山凯文螺杆机械有限公司 | Two-stage screw compressor with normally-open air intake valve and start method of two-stage screw compressor |
| CN105840514B (en) * | 2016-04-01 | 2019-05-31 | 浙江开山凯文螺杆机械有限公司 | A kind of the two-stage helical-lobe compressor and its starting method of the normally opened intake valve of band |
| CN109098971A (en) * | 2017-06-21 | 2018-12-28 | 阿特拉斯·科普柯空气动力股份有限公司 | Inlet valve and compressor and compressor element equipped with inlet valve |
| CN109281820A (en) * | 2017-07-21 | 2019-01-29 | 浙江盾安轨道交通设备有限公司 | The intaking valve structure of air compressor machine |
| CN107917079A (en) * | 2017-11-14 | 2018-04-17 | 江西风石压缩机有限公司 | A kind of screw air compressor intake valve |
| CN112879298A (en) * | 2021-01-22 | 2021-06-01 | 重庆开山流体机械有限公司 | Control mechanism of vacuum pumping system |
| CN113847746A (en) * | 2021-09-24 | 2021-12-28 | 浙江沃克制冷设备有限公司 | High-power two-stage screw refrigerating unit |
| CN115977956A (en) * | 2023-01-04 | 2023-04-18 | 广东标顶技术股份有限公司 | Air compressor air path system and control method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120530 |
|
| CX01 | Expiry of patent term |