CN1393641A - Water-sealed dual-screw air compressor - Google Patents
Water-sealed dual-screw air compressor Download PDFInfo
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- CN1393641A CN1393641A CN 01114844 CN01114844A CN1393641A CN 1393641 A CN1393641 A CN 1393641A CN 01114844 CN01114844 CN 01114844 CN 01114844 A CN01114844 A CN 01114844A CN 1393641 A CN1393641 A CN 1393641A
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Abstract
A water-sealing dual-screwn air compressor is disclosed. The dual screw arbors of compressor itself are synchronously driven by the master-slave synchronous gear pair. The cooling water is sprayed from the negative-pressure air inlet for playing both sealing and cooling roles. The air intake controller and split cooler are used. Its advantages are high quality of copmressed air (clean, no oil and low water content), simple structure, high efficiency, low cost and high pressure of exhausted air.
Description
The invention relates to a kind of water-sealed dual-screw air compressor.
Screw air compressor is a kind of have pressure energy machine of (being pressurized air) that air pressure under the free state is shortened into.The basic principle of screw air compressor compression is that free air sucks by the twin-screw compression of rotating from the negative pressure inlet mouth of compressor body, thereby discharges pressurized air from the high-pressure exhaust of compressor body when utilizing the twin-screw of compressor body to be driven.As everyone knows, pressurized air is the dynamic medium of various pneumatic tools and pneumatic equipment; The clean pressurized air that does not have oil is indispensable to many industrial production, and particularly product must pollution-immune place in process of production; Even have oil pressure to contract air to the little occasion of quality of product influence at those, oil-free compressed air also can be enhanced productivity and reliability.
The traditional double screw air compressor does not have oil and two kinds of oil is arranged by having or not cold oil to be divided between the screw rod, by cooling between the screw rod and sealing medium be divided into oil cooling but with two kinds of water coolings, be divided into single-stage twin-screw and twin-stage screw air compressor again by the logarithm of screw rod.
In the compressor body of the no oily screw air compressor of tradition:, can not be in contact with one another and wear and tear when guaranteeing that from structure screw rod rotates, and small gap seals between the dependence screw rod by principal and subordinate's synchromesh gear high-speed driving twin-screw.Because of its sealing effect finite sum evacuating air temperature height (more than 220 ℃) and height pressure side internal leakage bigger, usually need the secondary screw compression and by the cooling of cooling jacket and external high-pressure cooling water (more than the 10bar), just can reach the general industry usage requirement (7～8bar), so its complex structure, efficient are lower, maintenance difficult and involving great expense.
Tradition has in the compressor body of oily screw air compressor: directly drive driven screw rod by the active screw rod, and spray into cold oil by negative pressure inlet mouth from compressor body, make it play a part sealing, cooling and lubricated between screw rod and between screw rod and the body, through gas and oil separating plant oil gas is carried out limited separation again, and obtaining a kind of pressurized air that contains oil, its structure is comparatively simple and cost is lower.But have oily screw air compressor to exist following deficiency: one, this pressurized air that contains oil, generally all requiring increases the further oil removing of after-treatment device in addition, could use after reducing its oil content, thereby its using scope is limited to; Two, can not thoroughly be removed, finally be discharged in the atmosphere and harmful environment because of the cold oil in the pressurized air; Three, needing periodic replacement to be worth expensive cold oil and oil-gas separating core changes; Though four, have oily screw air compressor efficient to be higher than no oily screw air compressor, but because of being subjected to screw rod how much and the restriction of rotation precision, make the oil film that plays seal action stable inadequately still limited in the air compression process, so its efficient is still on the low side and the pressure of single stage screw compression can not surpass 13bar usually with voltage endurance capability.
In the traditional water sealing screw air compressor: directly drive driven screw rod by the active screw rod, and spray into cooling water by negative pressure inlet mouth from compressor body, make it play a part sealing, cooling and lubricated between screw rod and between screw rod and the body, through gas and water separator air water is separated again, and obtain a kind of pressurized air that does not have oil.But because the lubrication of water is relatively poor, so the wearing and tearing between the main driven screw are bigger; Be to strengthen the abrasive resistance between the screw rod, screw rod is the composite members of ceramic screw rod and steel axle, and it is worth expensive, easy unexpected embrittlement damage and the life-span lower (only be 10000 hours its projected life, and common steel screw design life-span be 50000 hours).
The air inlet system of traditional double screw air compressor generally is divided into full switch formula air inlet control, butterfly valve type voltage stabilizing and holds the butterfly valve type voltage stabilizing of the gas control system of transferring in and micro computer and synchronous machine control and hold the sectionally assembled air inlet of transferring in device of air and full switch formula air inlet system and control three kinds.
Traditional full switch formula air inlet system: when load gas consumption during less than the specified air displacement of air compressor, the working pressure of load system can raise, control by pressure relay high pressure set point, the air inlet system of air compressor is the Close All air inlet at once, thereby enters the unloading running state and reach purpose of energy saving; After the air compressor unloading operation, because load continues usefulness gas the working pressure of load system is descended fast, when the working pressure of load system dropped to the low pressure set point of pressure relay, the air inlet system of air compressor can all be opened air inlet, and enters the load operating situation at once.This shows air compressor operate in full open the time load and periodic duty between the unloading when contract fully, and cause the working pressure of the load system bigger problem that fluctuates; Especially when load gas consumption during approximately less than the specified air displacement of air compressor, the working pressure of load system is with very fast variation, and cause frequent loading of air compressor and unloading operation, and cause the problem that the working pressure fluctuation is too big and the air compressor rate of fault increases and the life-span of element reduces of load system.
Traditional butterfly valve type voltage stabilizing appearance is transferred in device of air: though the working pressure of load system is more stable, but it carries out the throttling voltage stabilizing generally in the load gas consumption is the specified air displacement of air compressor 1～0.4 times (even lower) time and holds and transfer, thereby cause the load gas consumption when the specified air displacement of air compressor is below 0.8 times, the problem that the air compressor energy consumption is excessive; And the butterfly valve type voltage stabilizing is held and to be transferred in device of air and generally is made up of butterfly valve, four connecting rods and air pressure driven diaphragm, makes that it adjusts that accuracy is low, element volume obstruction, rate of fault are higher, structure and control complexity.
The sectionally assembled air intake structure of transferring in device of air and full switch formula air inlet system is held in the butterfly valve type voltage stabilizing of traditional micro computer and synchronous machine control: when the load gas consumption was higher than 0.6 times of the specified air displacement of air compressor, micro computer and synchronous machine control butterfly valve type voltage stabilizing appearance were transferred in device of air work; When the load gas consumption was lower than 0.6 times of the specified air displacement of air compressor, micro computer and synchronous machine forced to make air inlet system to switch to full switch formula air inlet control.It has solved frequent loading of air compressor and unloading operation and energy consumption is excessive and adjust the low problem of accuracy, but its cost costliness, structure and control are complicated more and element stops up easily and rate of fault still fails to solve than problems such as height.
The object of the present invention is to provide and a kind ofly produce clean nothing oil, water content is low and the high-quality pressurized air of environmental sound, and efficient is higher, structure is comparatively simple, control is convenient and reasonable, cost is lower or single stage screw compression exhaust pressure can design higher air compressor.
Screw air compressor is divided into air-cooled and water-cooled again by the cooler type of cooling, and the present invention is that example illustrates structure of the present invention with air-cooled single-stage screw air compressor.For achieving the above object, technological scheme of the present invention is as follows:
A kind of double-screw type air compressor, drive unit, air inlet system that is connected with the compressed air inlet of compressor body that comprises the double-screw compressor body, connects with compressor body and the cooling unit that is connected with the compressed air outlet of compressor body, also be provided with intake pipe on the above-mentioned air inlet system, in order to inject the suction port of cooling water to compressor body; Above-mentioned air inlet system is to set up an adjusting part of limiting the quantity of formula voltage stabilizing air inlet on the full switch suction valve.
Described full switch air inlet system comprises air inlet screen, air inlet screen cover plate, full switch suction valve cover plate, full switch inlet valve seat, full switch suction valve slide core and loading and Unloading Control tracheae; On full switch suction valve cover plate, be provided with the filter screen fixing rod, and air inlet net and air inlet screen cover plate be fixed on the full switch suction valve cover plate, the suitable and formation pressure chamber of full switch suction valve slide core and full switch air inlet valve pocket by fastening piece; Full switch air inlet valve pocket and air inlet bearing also are provided with the full switch suction port by the fastening piece rigid joint on the air inlet bearing, full switch suction valve slide core is slided at full switch air inlet valve pocket, in order to open or close the full switch suction port.
The adjusting part of the formula of limiting the quantity of throttling voltage stabilizing air inlet comprises with the joining appearance of air inlet bearing transfers the valve seat cover, transfer the valve end cap by fastening piece and the appearance of holding accent valve seat cover rigid joint, transfer the valve end cap by holding, spring, back-up ring and pressure setting adjustment nut are assemblied in the appearance accent valve slide core among the appearance accent valve seat cover, hold to transfer the valve slide core and appearance transfer the valve seat cover adaptive and form to hold and transfer valve pressure gas, holding accent valve end cap is provided with voltage stabilizing appearance regulation and control system tracheae and transfers valve pressure air chamber to be connected with above-mentioned appearance, on the air inlet bearing, also be provided with gas-entered passageway and negative pressure connecting tube, the negative pressure connecting tube is communicated with gas-entered passageway, holds accent valve slide core and transfers the also air inflow of can regulate gas-entered passageway of sliding in the valve seat cover in appearance; Also be provided with to hold on appearance accent valve slide core and transfer valve slide core screw rod, be provided with a spacing quantitative nut thereon, it is a setting value with the distance of appearance accent valve end cap, holds the displacement amount of transferring the valve slide core in order to control.
Compressor body comprises by bearing and is assemblied in positive screw rod among screw rod casing and the bearing housing, is assemblied in female screw among screw rod casing and the bearing housing by bearing, seal by black box between bearing and positive screw rod and the female screw, on positive screw rod, be connected with the active synchronization gear by fastening piece, at female screw and the corresponding end rigid joint of active synchronization gear driven synchromesh gear is arranged, they are meshing with each other; Described drive unit for positive screw rod on the other end relative with the active synchronization gear synchronous pulley is installed, it connects with motor by synchronous cog belt.Perhaps compressor body comprise by bearing be assemblied in positive screw rod among screw rod casing and the gear housing, by bearing, be assemblied in the female screw among screw rod casing and the gear housing, seal by black box between bearing and positive screw rod and the female screw, on positive screw rod, be connected with the active synchronization gear by fastening piece, with the corresponding end rigid joint of active synchronization gear driven synchromesh gear is arranged on female screw, they are meshing with each other; Described drive unit for the gear housing of active synchronization gear the same side on the overdrive gear axle is installed, which is provided with overdrive gear, it and active synchronization gear engagement are connected with half-coupling and link with the output terminal of motor at the input end of overdrive gear axle.
Cooling unit comprises cooler, cooling fan and cooling motor, cooler is fixed within the machine room dry wall hole by fastening piece, cooler inlet pipeline and cooler outlet pipeline are rigidly connected by fastening piece and cooler, cooling fan and cooling motor are rigidly connected by fastening piece and rotary support, and rotary support is by relatively rotating between bearing pin and the cooler.
In the compressor body of air compressor, drive the negative and positive screw rod by principal and subordinate's synchromesh gear, make to keep certain clearance between the twin-screw, can not be in contact with one another and wear and tear when rotating with the assurance twin-screw; When screw rod rotated, the cooling water that sprays into from the negative pressure inlet mouth of compressor body was inhaled into free air, make between the screw rod and screw rod and body between cooling water play a part sealing and cooling, free air is compressed; From the high-pressure exhaust of compressor body discharge high pressure, temperature (about 70 ℃) and contain the pressurized air of water, be cooled to about 45 ℃ by cooler earlier, pass through the pressurized air that gas water separation tank will contain water again and separate; Be deposited at last the cooling water of air-water separation pot bottom can the pressure-driven in air compressor system under, again circulating by water filter and cooling water pipeline sprays into the negative pressure inlet mouth, and the pressurized air on gas water separation tank top is discharged for use from pressure minimum safety check and outlet valve.
The air inlet system of air compressor holds the gas control system of transferring in for the formula throttling voltage stabilizing of limiting the quantity of and is combined into gas control system structure with full switch formula air inlet control segmented: when load gas consumption during 1～0.8 times of the specified air displacement of air compressor, the working pressure of load system will have trend of rising, the formula of limiting the quantity of voltage stabilizing appearance is transferred in device of air can carry out the throttling adjusting automatically under the pressure of setting, so that the system works pressure stability of load is constant; And because the restriction transfer in the device of air positioning element is held in the formula voltage stabilizing of limiting the quantity of, voltage stabilizing holds that to transfer in device of air can be that the specified air displacement of air compressor is carried out the throttling voltage stabilizing more than 0.8 times the time at the load gas consumption only.When the load gas consumption less than the specified air displacement of air compressor below 0.8 times the time, the working pressure of load system will raise, by the control of pressure relay high pressure set point, the air inlet system of air compressor is the Close All air inlet at once, thereby enters the unloading operation conditions and reach purpose of energy saving.After the air compressor unloading operation, because load continues usefulness gas the load system working pressure is descended, when the load system working pressure dropped to the low pressure set point of pressure relay, the air inlet system of air compressor can all be opened air inlet, and enters the load operating situation at once.It is that the specified air displacement of air compressor is carried out more than 0.8 times the time that voltage stabilizing hold to be transferred at the load gas consumption, and the specified air displacement that meets air compressor generally should be greater than 1.1～1.2 times design selection requirement of factory's standard load gas consumption.This shows the periodic duty mode that accent → unloading → loading is held in loading → voltage stabilizing that operates to of air compressor, relatively simple for structure, the reliable in action and the adjustment of air inlet control are accurate, guarantee loading and unloading operation that air compressor can be not frequent, and reduced induced pressure fluctuation and equipment energy consumption.
The present invention compared with prior art has following advantage:
Fixing good sealing and the cooling action of micro-gap, cooling water between one, the compressor body screw rod makes the low and air compression process of its delivery temperature wait temperature state and the loss of height pressure side internal leakage little near desirable.So compare with traditional oil lubrication screw air compressor that has, the efficient of air compressor is higher can be designed higher with the single stage screw exhaust pressure.
Two, the twin-screw of compressor body adopts principal and subordinate's synchromesh gear to drive, and makes to keep certain clearance between the twin-screw, guarantees can not to be in contact with one another and to wear and tear when twin-screw rotates, so its screw rod material adopts common 40Cr steel to get final product.With traditional water sealing twin-screw is that the ceramic screw body is compared with the air compressor of steel axle composite members, is worth cheap and durable reliable.
Three, the main synchromesh gear of compressor body is by the structure of Synchronous Belt Drives, and the synchronous cog belt transmission has the common feature of gear Synchronous Transmission and the flexible transmission of belt, compares with gear transmission and has saved baroque coupling and gear-box.
Four, overdrive gear directly drives the structure of main synchromesh gear in the gear-box of compressor body, makes its structure comparatively simple, i.e. compressor body middle gear transmission only is made of a gear-box.The Compressor Synchronous gear of no oily screw air compressor and overdrive gear respectively are made up of a pair of gear at present, and are arranged in the two ends of body screw rod, i.e. compressor body middle gear transmission is made of two gear-boxes.
Five, the air inlet of air compressor is controlled to be the segmented composite control that the gas control system of transferring in and full switch formula air inlet control are held in the formula voltage stabilizing of limiting the quantity of, it is relatively simple for structure, control is reasonable, reliable in action and adjustment are accurate, guarantee loading and unloading operation that air compressor can be not frequent, and reduced induced pressure fluctuation and equipment energy consumption.It has solved, and traditional contract fully unloads and the problem of the frequent loading of the air compressor of full open loaded type air inlet control and unloading operation, the energy consumption of having avoided traditional butterfly valve type voltage stabilizing to hold transferring in gas control system air compressor is big, complex structure, the adjustment accuracy is low, control is complicated, element stops up easily and rate of fault is higher defective, and does not have the butterfly valve type voltage stabilizing appearance of traditional micro computer and synchronous machine control to transfer in the problems such as sectionally assembled air intake structure cost costliness of device of air and full switch formula air inlet system.
Six, cooler and air compressor are the structure of externally connected type partial installation cooler, and promptly cooler can be installed in the machine room wall hole and directly air draft, and the fan electromotor of cooler can be around the structure of the cooler Unscrew of fixing by bearing pin.Compare with the air-cooled air compressor of air compressor assembling all-in-one-piece with traditional cooler, can clean cooler quickly and easily after the fan electromotor Unscrew of cooler, and save heat radiation airduct additional when equipment is installed.
Seven, the cooling water in the air compressor system is auto recycling, and only needs a cooler cooled compressed air and cooling water together.The gas water separation tank bottom of air compressor is equipped with the cooling water of a constant volume in advance, cooling water is by the high drive of gas water separation tank the inside, the air inlet low voltage terminal that sprays into compressor after water filter filters flows after the air mixing that is inhaled into, discharge by the compressor air-discharging high voltage terminal, cool off together by a cooler then, separate the back repetitive cycling by gas water separation tank at last and use.At present tradition have the oil lubrication screw air compressor be oil cooling but with two cooler construction of air cooling, to satisfy the requirement of the pressurized air chilling temperature different with cold oil; Traditional nothing oil screw air compressor is by cooling jacket and external high-pressure cooling water (more than the 10bar) cooling; So the structure of water-sealed dual-screw air compressor cooling system is comparatively simple.
Eight, less and air no oil pollution and delivery temperature in compression process is lower because water is to the viscosity of the effect of impurity cohesion in the air and precipitation, water, utilize the gravity of water that water and air is separated more up hill and dale with easily, so the air compressor gas water separation tank can be designed to simple and non-maintaining cylinder baffle-type structure, thus saved similar as tradition have oil lubrication screw air compressor complexity, high-precision, be worth the expensive Oil-gas Separation core element that regularly replaces with need; And because of the compressed-air actuated temperature that enters gas water separation tank is lower, promptly compressed-air actuated water content is lower, so what produce is a kind of clean do not have oil, that water content is lower and high-quality pressurized air environmental sound.
Advantage main reference Sweden Atlas (ATLAS), U.S.'s Ingersoll-rand (INGERSOLL), Britain Kang Puai (COMOAIR), U.S.'s longevity power (SULLAIR) and the Taiwan of the invention described above are contained (FS) air compressor again and are compared.
Below the present invention will be described with embodiment with reference to the accompanying drawings.
Fig. 1 is the system principle schematic representation that the present invention adopts Synchronous Belt Drives embodiment;
Fig. 2 is the A-A sectional drawing of Fig. 1, the i.e. structural representation of Synchronous Belt Drives compressor body;
Fig. 3 is the B-B sectional drawing of Fig. 1, the i.e. structural representation of air inlet system;
Fig. 4 is the C-C sectional drawing of Fig. 1, the i.e. structural representation of cooler;
Fig. 5 is the system principle schematic representation that the present invention adopts gear transmission embodiment;
Fig. 6 is the A-A sectional drawing of Fig. 5, the i.e. structural representation of gear transmission compressor body.
Fig. 1 to Fig. 6 has reflected two kinds of embodiments of the present invention.
See also Fig. 1 to Fig. 6: 1 is main motor among the figure, the 2nd, and the indication of vacuum pressure reduction, the 3rd, air filter, the 4th, Synchronous Belt Drives, the 5th, twin-screw, the 6th, load and the Unloading Control tracheae, the 7th, control electromagnetic valve, the 8th, air inlet system, the 9th, negative pressure connecting tube, the 10th, one-way valve, the 11st, regulation and control system tracheae, the 12nd, delivery temperature probe are held in voltage stabilizing, the 13rd, the pilot line filter, the 14th, contain the pressurized air of water, the 15th, the pressure minimum safety check, the 16th, induced pressure table, the 17th, pressure relay, the 18th, outlet valve, the 19th, safety valve, the 20th, exhaust gas pressure gage, the 21st, low-water level switch, the 22nd, water level and blowdown controller, the 23rd, gas water separation tank, the 24th, cooling water, the 25th, electromagnetism blowdown valve, the 26th, cooler outlet pipeline, the 27th, water level indication, the 28th, cooling fan, the 29th, water filter, the 30th, pressure reduction indication, the 31st, cooler, the 32nd, thermostatic valve, 33 cooling water pipelines, the 34th, high-pressure exhaust, the 35th, compressor body, the 36th, negative pressure inlet mouth, the 37th, synchronous pulley, the 38th, attachment screw, the 39th, cylindrical bearing, the 40th, screw rod casing, the 41st, positive screw rod, the 42nd, connecting bolt, the 43rd, black box, the 44th, conical bearing, the 45th, main synchromesh gear, the 46th, the gear-box end cap, the 47th, door and screw, the 48th, from synchromesh gear, the 49th, spacer, the 50th, bearing housing, the 51st, female screw, the 52nd, spacer, the 53rd, preload ring, the 54th, screw case end cap, the 55th, air inlet screen cover plate, the 56th, air inlet screen, 56-1 is the air inlet screen inner space, the 57th, full switch suction valve slide core, the 58th, seal ring, the 59th, sealed nylon pad, the 60th, connecting bolt, the 61st, locking nut, the 62nd, air inlet bearing, 62-1 are to hold to transfer in gas port, 62-2 is a gas-entered passageway, 62-3 is the full switch suction port, the 63rd, and seal ring, the 64th, hold and transfer the valve seat cover, the 65th, hold and transfer the valve end cap, 65-1 holds to transfer valve pressure air chamber, the 66th, spring, the 67th, back-up ring, the 68th, setting pressure is adjusted nut, the 69th, the air inlet setscrew nut of limiting the quantity of, the 70th, hold that to transfer valve slide core, 70-1 be to hold to transfer valve slide core screw rod, the 71st, the full switch inlet valve seat, 71-1 is a full switch air inlet sliding sleeve, and 71-2 is a gas-entered passageway, and 71-3 is outside the full switch pressure air chamber, the 72nd, full switch suction valve cover plate, 72-1 is the air inlet screen fixing rod, the 73rd, and machine room dry wall hole, the 74th, bearing pin, the 75th, cooling motor, the 76th, rotary support, the 77th, cooler inlet pipeline, the 78th, coupling, the 79th, half-coupling, the 80th, overdrive gear axle, the 81st, gear-box end cap, the 82nd, cone gear, the 83rd, overdrive gear, the 84th, main synchromesh gear, the 85th, spacer, the 86th, screw rod casing, the 87th, positive screw rod, the 88th, connecting bolt, the 89th, Seal Kit, the 90th, conical bearing, the 91st, preload ring, the 92nd, bearing housing end cap, the 93rd, door and screw, the 94th, bearing housing, the 95th, female screw, the 96th, cylindrical bearing, the 97th, spacer, the 98th, from synchromesh gear, the 99th, gear housing, 100 preload rings, the 101st, Sealing, the 102nd, door and screw.
Among structural representation Fig. 2 of Synchronous Belt Drives compressor of the present invention: synchronous pulley 37 is rigidly attached on the axle of positive screw rod 41 by fastening piece, be rigidly connected by fastening piece and active synchronization gear 45 on sun screw rod 41 the other end axles, sun screw rod 41 is assemblied among screw rod casing 40 and the bearing housing 50 by cylindrical bearing 39 and conical bearing 44, and bearing and twin-screw 5 (being positive screw rod 41 female screws 51) are by black box 43 isolating seals; Driven synchromesh gear 48 is rigidly connected by fastening piece and female screw 51, and female screw 51 is assemblied in by bearing among screw rod casing 40 and the bearing housing 50, and active synchronization gear 45 is transmitting torque with driven synchromesh gear 48 engagements.
Among structural representation Fig. 3 of air inlet system of the present invention: air inlet screen 56, air inlet screen cover plate 55 and full switch suction valve cover plate 72 are rigidly attached on the full switch inlet valve seat 71 by air inlet screen fixing rod 72-1 and fastening piece, loading and Unloading Control tracheae 6 are fixed on the full switch suction valve cover plate 72 by fastening piece and communicate with the 71-3 of full switch pressure air chamber, full switch suction valve slide core 58 is contained in (and complementing each other to form the golden switch 71-3 of pressure air chamber) among the full switch air inlet valve pocket 71-1, and full switch inlet valve seat 71 is rigidly connected by fastening piece and air inlet bearing 62; Hold to transfer valve seat cover 64 to be rigidly connected by fastening piece and air inlet bearing 62, hold and transfer valve end cap 65 to transfer valve seat cover 64 to be rigidly connected by fastening piece and appearance, hold and transfer valve slide core 70 to transfer valve end cap 65 by holding, spring 66, back-up ring 67 and pressure are set and are adjusted nut 68 and be assemblied in and hold and transfer among the valve seat cover 64 (and complement each other to form to hold transfer the valve 65-1 of pressure air chamber), the air inlet setscrew nut 69 of limiting the quantity of is contained in and hold transfers on the valve slide core screw rod 70-1, voltage stabilizing appearance regulation and control system tracheae 11 is connected with appearance by fastening piece and appearance accent valve end cap 65 transfers the valve 65-1 of pressure air chamber to communicate, and negative pressure connecting tube 9 and cooling water pipeline 33 are communicated with the gas-entered passageway 62-1 of air inlet bearing 62 by fastening piece.
Among structural representation Fig. 4 of cooler of the present invention: cooler 31 is fixed within the machine room dry wall hole by fastening piece, cooler inlet pipeline 26 and cooler outlet pipeline 77 are rigidly connected by fastening piece and cooler 31, cooling fan 28 and cooling motor 75 are rigidly connected by fastening piece and rotary support 76, and rotary support 76 can be rotatably connected with cooler 31 relatively by bearing pin 74.
Among structural representation Fig. 6 of another embodiment of the present invention gear transmission compressor: half-coupling 79 is rigidly connected by fastening piece and overdrive gear axle 80, overdrive gear axle 80 is rigidly connected by fastening piece and overdrive gear 83, and overdrive gear axle 80 is installed within the gear housing 99 by conical bearing 82; Active synchronization gear 84 is rigidly connected by fastening piece and positive screw rod 87, sun screw rod 87 is assemblied among screw rod casing 86 and the bearing housing 94 by cylindrical bearing 82 and conical bearing 90, and bearing and twin-screw 5 (being positive screw rod 87 female screws 95) are by black box 89 isolating seals; Driven synchromesh gear 98 is rigidly connected by fastening piece and female screw 95, female screw 95 is assemblied among screw rod casing 86 and the bearing housing 94 by bearing, overdrive gear 83 and 84 engagements of active synchronization gear, active synchronization gear 84 is transmitting torque with driven synchromesh gear 98 engagements.
The present invention in use, main motor 1 drives main synchromesh gear 45 by Synchronous Belt Drives 4, or main motor 1 drives main synchromesh gear 45 by coupling 78 and overdrive gear 83, drive from synchromesh gear 48 by main synchromesh gear 45 again, make positive screw rod 41 and female screw 51 rotations, produce compressed-air actuated purpose and reach.Because main synchromesh gear 45 and positive screw rod 41 fuse, fuse from synchromesh gear 48 and female screw 51, its manufacturing guaranteed when installing main synchromesh gear 45 with mesh from synchromesh gear 48 when contacting, make positive screw rod 41 and female screw 51 keep a small and fixing gap, so drive from the process of synchromesh gear 48 at main synchromesh gear 45, positive screw rod 41 remains a small and fixing gap with female screw 51; In positive screw rod 41 and female screw 51 rotation processes, the cooling water 24 that sprays into from compressor body 35 interior negative pressure inlet mouths 36 is inhaled into the free air that filters by air inlet screen 56, cooling water 24 is playing a part sealing and cooling between the twin-screw 5 and between twin-screw 5 and the compressor body 35, and free air is compressed between the twin-screw 5 that rotates; The high pressure of discharging from the high-pressure exhaust 34 of compressor body 35, about 70 ℃ and contain the pressurized air 14 of water are cooled to about 45 ℃ together through supercooler 31 earlier, separate through gas water separation tank 23 again; Be deposited at last under the pressure-driven of cooling water 24 meetings in air compressor system of gas water separation tank 23 bottoms, again circulating by water filter 29 and cooling water pipeline 33 sprays into negative pressure inlet mouth 36, and the pressurized air on gas water separation tank 23 tops is discharged for use from pressure minimum safety check 15 and outlet valve 18.
The present invention in use, the air inlet in the air inlet system 8 of air compressor is controlled to be the formula voltage stabilizing of limiting the quantity of and holds and to transfer in gas and the sectionally assembled control structure of full switch formula air inlet.When the load gas consumption the specified gas production of air compressor 1～0.8 between the time, the working pressure of load system will have trend of rising: when the working pressure of load system is elevated to setting value, by holding the compressed-air actuated effect (voltage stabilizing is held regulation and control system tracheae 11 and directly communicated with the pressurized air of gas water separation tank 23) of regulating and control to make in the tracheae 11 with the voltage stabilizing that the appearance accent valve 65-1 of pressure air chamber directly is communicated with, make and hold the resistance action of transferring valve slide core 70 to overcome spring 66, thereby reduce to hold the admission space of transferring in gas port 62-1, promptly reach by reducing the working pressure purpose stable and that slowly raise that air inflow makes load system; Set the corrective action of adjusting nut 68 and spring 66 by the limit the quantity of positioning action, pressure of setscrew nut 69 of air inlet, making to hold transfers valve slide core 70 action under the pressure of setting to transfer in gas port 62-1 with can only partly closing to hold, promptly reach the appearance accent purpose of stable operation pressure, minimizing and qualification air inflow, and avoid air compressor under low load, to carry out throttling and hold the working state of transferring and wasting electric energy from structure.When the load gas consumption less than the specified air displacement of air compressor below 0.8 times the time, the working pressure of load system can raise rapidly: when the working pressure of load system is elevated to unloading pressure, high pressure action set point by pressure relay 17 makes control electromagnetic valve 6 dead electricity, be communicated with in the pressurized air and loading and Unloading Control tracheae 6 thereby make in the gas water separation tank 23, make pressurized air enter the 71-3 of full switch pressure air chamber, make 57 action and the Close All air inlets of full switch air inlet slide core, to reach the purpose of air compressor unloading (zero load) operation; When air compressor no-load running (being not aerogenesis of air compressor) and load continue to use gas, the working pressure of load system can begin to reduce, low pressure action set point by pressure relay 17 gets control electromagnetic valve 6, pressurized air and loading and Unloading Control tracheae 6 break in the gas water separation tank 23 thereby make, and loading and Unloading Control tracheae 6 are communicated with negative pressure connecting tube 9, the pressurized air of the 71-3 of full switch pressure air chamber is evacuated (during compressor operation, because the air-breathing compression of screw rod, be in the negative-pressure vacuum state among the gas-entered passageway 62-2 of air inlet bearing 62), make 57 actions of full switch air inlet slide core and all open air inlet, to reach the purpose of air compressor load operating.This shows the circular flow mode of the working procedure of air compressor, hold to transfer to take the regular hour in the course of the work because of voltage stabilizing, so guaranteed loading and the unloaded operation that air compressor can be not frequent from structure for the accent → unloading of loading → voltage stabilizing appearance.
The compressor body of air compressor and relevant part thereof among the embodiment should select for use suitable material and processing with anti-corrosion.In the present invention and the embodiment other about structure and control principle, identical with traditional screw air compressor, the Therefore, omited explanation.
Claims (5)
1, a kind of double-screw type air compressor, the drive unit, the air inlet system that is connected with the free air import of compressor body and the cooling unit that is connected with the compressed air outlet of compressor body that comprise the double-screw compressor body, connect with compressor body, it is characterized in that: above-mentioned air inlet system is provided with intake pipe (33), in order to inject the suction port (36) of cooling water to compressor body (35); And the adjusting part of the formula of the limiting the quantity of throttling voltage stabilizing air inlet in the above-mentioned air inlet system (8).
2, according to the double-screw type air compressor of claim 1, it is characterized in that: described drive unit is equipped with synchronous pulley (37) for going up the other end relative with active synchronization gear (45) with positive screw rod (41), and it connects with main motor (1) by Synchronous Belt Drives (4).
3, double-screw type air compressor according to claim 1, it is characterized in that: described drive unit for the gear housing (99) of active synchronization gear (84) the same side on overdrive gear axle (80) is installed, which is provided with overdrive gear (83), it and active synchronization gear (84) mesh, input end at overdrive gear axle (80) is equipped with half-coupling (79), and half-coupling (79) connects with the output terminal of main motor (1) by coupling (78).
4, double-screw type air compressor according to claim 1, it is characterized in that: the adjusting part of the formula of limiting the quantity of throttling voltage stabilizing air inlet comprises with the joining appearance of air inlet bearing (62) transfers valve seat cover (64), transfer valve end cap (65) by fastening piece and the appearance of holding accent valve seat cover (64) rigid joint, transfer valve end cap (65) by holding, spring (66), the appearance that back-up ring (67) and pressure setting adjustment nut (69) are assemblied among the appearance accent valve seat cover (64) is transferred valve slide core (70), hold to transfer valve slide core (70) and appearance transfer valve seat cover (64) adaptive and form to hold and transfer valve pressure air chamber (65-1), holding accent valve end cap (65) is provided with voltage stabilizing appearance regulation and control system tracheae (11) and transfers valve pressure air chamber (65-1) to be connected with above-mentioned appearance, on air inlet bearing (62), also be provided with gas-entered passageway (62-1) and negative pressure connecting tube (9), negative pressure connecting tube (9) is communicated with gas-entered passageway (62-1), holds and transfers valve slide core (70) air inflow that (slip) regulates gas-entered passageway (62-1) with throttling in holding accent valve seat cover 64; Also be provided with to hold on appearance accent valve slide core (70) and transfer valve slide core screw rod (70-1), be provided with a spacing quantitative nut (69) thereon, it is adjusted into a fixed value with the distance of appearance accent valve end cap (65), holds the displacement amount of transferring valve slide core (70) in order to control.
5, double-screw type air compressor according to claim 1, it is characterized in that: cooling unit comprises cooler (31), cooling fan (28) and cooling motor (75), cooler (31) is fixed within the machine room dry wall hole (73) by fastening piece, cooler inlet pipeline (26) and cooler outlet pipeline (77) are rigidly connected by fastening piece and cooler (31), cooling fan (28) and cooling motor (75) are rigidly connected by fastening piece and rotary support (76), and rotary support (76) is by relatively rotating between bearing pin (74) and the cooler (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01114844 CN1393641A (en) | 2001-06-25 | 2001-06-25 | Water-sealed dual-screw air compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01114844 CN1393641A (en) | 2001-06-25 | 2001-06-25 | Water-sealed dual-screw air compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1393641A true CN1393641A (en) | 2003-01-29 |
Family
ID=4661452
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01114844 Pending CN1393641A (en) | 2001-06-25 | 2001-06-25 | Water-sealed dual-screw air compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1393641A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100347450C (en) * | 2003-09-24 | 2007-11-07 | 中国船舶重工集团公司第七一一研究所 | Helical lobe compressor for hydrogen water spray cooled |
| CN101270749B (en) * | 2007-03-23 | 2010-05-19 | 宝山钢铁股份有限公司 | Oil-free helical lobe compressor rotor anti-seizing protection method and device |
| CN103573586A (en) * | 2013-11-04 | 2014-02-12 | 无锡爱科换热器有限公司 | Oil cooler |
| CN109958601A (en) * | 2017-12-23 | 2019-07-02 | 天津双合盛自行车有限公司 | A kind of air compressor of novel improved structure |
| CN112253456A (en) * | 2020-11-12 | 2021-01-22 | 山东凯格瑞森能源科技有限公司 | Totally enclosed prevents leaking oil free compressor system |
| CN114122455A (en) * | 2021-11-19 | 2022-03-01 | 上海青氢科技有限公司 | Fuel cell engine air system |
| CN117722361A (en) * | 2024-01-05 | 2024-03-19 | 苏州牧风压缩机设备有限公司 | High-low pressure two-stage screw air compressor |
-
2001
- 2001-06-25 CN CN 01114844 patent/CN1393641A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100347450C (en) * | 2003-09-24 | 2007-11-07 | 中国船舶重工集团公司第七一一研究所 | Helical lobe compressor for hydrogen water spray cooled |
| CN101270749B (en) * | 2007-03-23 | 2010-05-19 | 宝山钢铁股份有限公司 | Oil-free helical lobe compressor rotor anti-seizing protection method and device |
| CN103573586A (en) * | 2013-11-04 | 2014-02-12 | 无锡爱科换热器有限公司 | Oil cooler |
| CN109958601A (en) * | 2017-12-23 | 2019-07-02 | 天津双合盛自行车有限公司 | A kind of air compressor of novel improved structure |
| CN112253456A (en) * | 2020-11-12 | 2021-01-22 | 山东凯格瑞森能源科技有限公司 | Totally enclosed prevents leaking oil free compressor system |
| CN114122455A (en) * | 2021-11-19 | 2022-03-01 | 上海青氢科技有限公司 | Fuel cell engine air system |
| CN114122455B (en) * | 2021-11-19 | 2024-03-26 | 上海青氢科技有限公司 | Air system of fuel cell engine |
| CN117722361A (en) * | 2024-01-05 | 2024-03-19 | 苏州牧风压缩机设备有限公司 | High-low pressure two-stage screw air compressor |
| CN117722361B (en) * | 2024-01-05 | 2024-06-04 | 苏州牧风压缩机设备有限公司 | High-low pressure two-stage screw air compressor |
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