CN205689430U - A kind of pressure and temperature balance system of single screw rod oilless (oil free) compressor of spraying water - Google Patents

Abstract

The utility model discloses a kind of water spray single screw rod oilless (oil free) compressor pressure and temperature balance system, waterproof sealing including bearing, cool down the pressure and temperature equilibrium principle and method used, and include exclusive body, screw rod, screw rod antero posterior axis bearing, the sealing cooling system of bearing, i.e. on body and screw rod antero posterior axis bearing, it is provided with multiple shunting zone and tap hole, return port, utilize high-pressure side high-pressure water gas fluid of leakage from body with screw rod fit clearance, control its flow, pressure, direction, and it is drawn into the inlet chamber of negative pressure, simultaneously and it is provided with cooling zone in screw rod antero posterior axis bearing, the fluid making shunting zone flows through the cooling zone of bearing, and reached the stress balance of two end bearings and the balance of the temperature of bearing running temperature and system fluid.This utility model provides that the single screw rod oilless (oil free) compressor of water spray solves high speed rotating seal leakage, service life is short and bearing grease lubrication is in operation and is easily generated the solution of high temperature two hang-up, by its principle and method and powerful water spray list screw rod oil-free air compressor can be produced.

Description

A kind of pressure and temperature balance system of single screw rod oilless (oil free) compressor of spraying water

Technical field

The present invention relates to universal machine compressor field, the pressure of single screw rod oilless (oil free) compressor fluid motion that is specifically related to spray water Power and hygral equilibrium method and bearing seal cooling system, and extend and relate to single screw rod technique compressor (as compressed multiple chemical industry Gas, steam etc.) and single-screw expander, and water spray twin screw oilless (oil free) compressor.

Background technology

The single screw rod oilless (oil free) compressor of water spray is a kind of energy saving environmental protection product, be widely used in chemical industry, pharmacy, food, weaving, Electronics, spray paint, space technology, military project, scientific research etc. require pure compressed-air actuated industry；The performances such as its reliability, noise, energy consumption Aspect has obvious advantage than piston type and double-screw type without oil machine.

The single screw rod oilless (oil free) compressor of water spray distinguishes, with the maximum of oil spout single screw compressor, the aqueous vapor fluid being to be compressed Needs possess permanent sealing system reliably, absolutely not allow lubrication water to leak into the bearing of high speed rotating.

Now the single screw rod oilless (oil free) compressor of water spray seals and uses mechanical seal, such as Fig. 2, part 2B, 3B, belongs to consumable accessory, makes Can only be within 10,000 hours with the life-span, it is impossible to meet the operating mode used continuously long-term 24 hours, such as chemical industry, the company of textile industry Continuous supply.

Between mechanical seal dynamic and static ring, the fricative heat in the face of high speed rotating needs system to provide substantial amounts of cooling water, fall The low efficiency of compressor.

The bearing that now the single screw rod oilless (oil free) compressor of water spray uses is the hermetically sealed rolling bearing lubricated by a small amount of solid grease, Such as Fig. 2, part 1B, 4B, its radiating condition is poor, it not as oil-injection machine fluid oil directly lubricate can band bearing running produce heat, So powerful water spray is easily generated high temperature without oil machine, and grease easily melts, coking and loss, and decreases making of bearing With the life-span, and the mechanical disorder caused due to bearing damage.

Main frame transport need to be carried out by mechanical seal and the replacing of bearing, detection to professional factory, then add the fortune of machine Row and maintenance cost.

Summary of the invention

In order to solve above-mentioned technical problem, we are through long term test, propose the single screw rod oilless (oil free) compressor stream of one water spray The pressure and temperature counterbalanced procedure of body motion, i.e. utilizes the principle that fluid motion stress balances, when compressor operating by high-pressure side The high-pressure water gas fluid section transfer of leakage at screw rod and body fit clearance is diverted to the negative pressuren zone of suction end, it is to avoid fluid stream To bearing, eliminate the mechanical seal bearing high pressure, be inherently eliminated aqueous vapor fluid and leaked into the root of bearing.Make choked flow The passive seal of type becomes the realizing active sealing of flow guiding type.

Utilize the aqueous vapor fluid outer ring by two end bearings of shunting simultaneously, reach the purpose of cooling bearing, make bearing Running temperature is in a basic balance with the temperature of system fluid identical.

In order to achieve the above object, technical solution of the present invention is as follows: the pressure of water spray single screw rod oilless (oil free) compressor fluid motion The sealing cooling system of power and hygral equilibrium method and bearing mainly includes cylinder block set, screw rod front-end bearing pedestal assembly, screw rod rear axle Bearing assembly, screw drive mechanism.

Described cylinder block set is installation foundation part, middle machine body cylindrical hole and screw body precision-fit, screw rod fore bearing Holder assembly is arranged on the left side of body, and screw rod rear bearing block assembly is arranged on the right side of body.Have on the right side hole wall of body One tap hole, the left side hole wall of body has a return port；Body be provided above air, the lubrication import of water and aerofluxus Mouthful.The left end of body is also connected with motor connecting base, makes the power of motor reach screw rod and rotates.

Described screw rod front-end bearing pedestal assembly includes front-end bearing pedestal, fore bearing splicing sleeve, the encapsulated oil sealing of front lips, and hole keeps off Circle, cylinder roller bearing, shaft block ring, fore bearing gland, O RunddichtringO.

Described bearing splicing sleeve is fixed on front-end bearing pedestal with 6 screws；The encapsulated oil sealing of lips is arranged on front-end bearing pedestal Kong Zhong, and with hole back-up ring axial limiting；Bearing internal external circle is separable, and its inner ring is fixed on screw shaft, limits with shaft block ring Position；Bearing outer ring is arranged in bearing supporting trepanning；Fore bearing gland is screwed on bearings is overlapped；In order to ensure axle Hold splicing sleeve and front-end bearing pedestal composition surface aqueous vapor fluid does not leaks, middle equipped with O RunddichtringO.

Described screw rod rear bearing block assembly includes rear bearing block, the encapsulated oil sealing of rear lips, hole back-up ring, angular contact axle Hold, bearing washer, bearing spacer, bearing plate, right bearing gland, flow adjustment screw, O RunddichtringO.

Described screw rod rear bearing block assembly is fixed on the right side of body with 8 screws, and the encapsulated oil sealing of right lips is installed In rear bearing bore, and with hole back-up ring axial limiting.Angular contact bearing inner ring is arranged on screw shaft right-hand member, passes through bearing holder (housing, cover) With bearing plate and 3 screw in compressions on screw shaft.Bearing outer ring is by being pressed on rear bearing block at right bearing gland.

Described rear bearing block left lumen is divided into main shunting zone by 2 pieces of dividing plates and pays a shunting zone, and has point Discharge orifice；Right corner contact bearing installation position is arranged to interlayer, is provided with an annular water tank, and bottom has inlet opening, and top has Outlet.

Dividing plate circumference array 4 screws and plug screw before described rear bearing block.

Described screw drive mechanism is arranged on front-end bearing pedestal and rear bearing block by two end bearings；Screw body is by flat Keying is scheduled on screw shaft, and left end screw shaft step is spacing, and right-hand member round nut screws, and nut radially and is locked with holding screw Tightly.

By technique scheme, the invention have effective effect that；(1) fluid motion stress hygral equilibrium principle is used, The method using shunting release, it is to avoid fluid flows to bearing and solves the waterproof problem of bearing.(2) consumable accessory machinery is eliminated The short-term sealed is changed, and machine adapts to the operating mode of long continuous operation, such as weaving, chemical industry.(3) cold by aqueous vapor fluid But bearing, bearing produces high temperature never, it is ensured that the Long Service Life of bearing.(4) sealing system is closeer than using machinery Seal structure is simple, and number of parts reduces relatively, particularly eliminates expensive mechanical seal, considerably reduces and produce into This.

Accompanying drawing explanation

In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art.Below by embodiment or existing In technology description, the required accompanying drawing used is introduced simply, it should be apparent that, the accompanying drawing in describing below is only the present invention Some embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to according to These accompanying drawings obtain other accompanying drawing.

Fig. 1 is the single screw rod oilless (oil free) compressor fluid motion stress of a kind of water spray disclosed in the embodiment of the present invention and temperature is put down Its pressure and temperature equilibrium principle figure of weighing apparatus method；

Fig. 2 is the embodiment of the present invention single screw rod oil free compression machine bearing of existing water spray and sealing system structure chart；

Fig. 3 is the single screw rod oilless (oil free) compressor fluid motion stress of a kind of water spray disclosed in the embodiment of the present invention and temperature is put down Its screw drive mechanism stress balance sketch of weighing apparatus method；

Fig. 4 is the single screw rod oilless (oil free) compressor fluid motion stress of a kind of water spray disclosed in the embodiment of the present invention and temperature is put down Its mechanical construction drawing of weighing apparatus method；

Numeral and the corresponding component title of letter representation in figure.

Shown in accompanying drawing 1:

1A, cylinder roller bearing 2A, left encapsulated oil sealing 3A, circumference array Cooling Holes 4A, air-breathing district 5A, screw rod 6A, screw shaft 7A, fluid compression district 8A, higher-pressure region 9A, flow adjustment screw 10A, front dividing plate 11A, main shunting District 12A, ball valve 13A, body 14A, central dividing plate 15A, right encapsulated oil sealing 16A, diagonally contact bearing 17A, Annular cooling zone 18A, pair shunting zone

Shown in accompanying drawing 4:

1. motor connecting base 2. jaw coupling 3. fore bearing gland 4. bearing splicing sleeve 5. cylinder roller bearing Lips encapsulated oil sealing 9. body 10 locking nut 11.O RunddichtringO (2) before 6.O RunddichtringO (1) 7. front-end bearing pedestal 8. 12. holes back-up ring (1) 13. bearing spacer 14. diagonally contact bearing 15. right bearing gland 16. bearing plate 17. axle Lips encapsulated oil sealing 19. flow adjustment screw 20. rear bearing block 21. flat key 22. screw rod 23. screw rod after rim circle 18. Axle 24. hole back-up ring (2) 25.O RunddichtringO (3) 26.O RunddichtringO (4) 27. shaft block ring.

Detailed description of the invention

Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out complete retouching State, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments.Based on the present invention In its embodiment, those of ordinary skill in the art obtained under not making creative work premise all its implement Example, broadly falls into the scope of protection of the invention.

Below in conjunction with embodiment and detailed description of the invention, the present invention is further detailed explanation.

Embodiment；

As it is shown in figure 1, the single screw rod oilless (oil free) compressor pressure and temperature counterbalanced procedure fluid flow of water spray: the sky entered from G mouth Gas and water fluid-mixing is inhaled into the screw rod chamber in air-breathing district, and the engagement paid along with screw rod star-wheel rotates, and in compressional zone, 7A presses Contracting, its major part high-pressure water gas fluid, enter aqueous vapor bucket from the triangle air vent of body 13A；Garden and body from screw rod 5A A small amount of high-pressure water gas fluid that 13A inner hole gap leaks at K left side of dividing plate 10A before the right side and body of screw rod 5A Formation higher-pressure region, side 8A；By some high-pressure water gas fluid at the gap m that dividing plate 10A hole before screw shaft 6A with body is formed Flow to main shunting zone 11A, then enter B mouth from body A mouth through ball valve 12A, then flow through annular cooling zone 17A from B mouth and be cooled to Angular contact bearings 16A, and by outlet C to D mouth, make aqueous vapor fluid flow to body left end air-breathing district 4A, and suck screw rod 5A Suction muffler.

At main shunting zone 11A, major part fluid exits into B mouth from A mouth, and some aqueous vapor fluid is through screw rod simultaneously Flowing at the gap n that Zhou Wai garden 6A and body central dividing plate 14A hole are formed and pay shunting zone 18A, this part aqueous vapor fluid is through E mouth stream Enter circumference array Cooling Holes 3A to F1 and F2 and cool down cylinder roller bearing, and flow to the air-breathing of low-pressure area 4A suction screw rod 5A Chamber.

As it is shown in figure 1, the single screw rod oilless (oil free) compressor pressure and temperature counterbalanced procedure balance mechanism of water spray: when compressor is adding During carrying row, air-breathing district, left side 4A is negative pressure, when the large quantity of air come in from intake valve and water are inhaled into screw rod suction muffler, with Time from body right-hand member main shunting zone 11A and pay shunting zone 17A aqueous vapor fluid be inhaled into screw body suction muffler, because of air-breathing the most simultaneously The pressure of mouth is less than atmospheric pressure, so aqueous vapor fluid will not flow to bearing and leak into outside body.

When compressor is when unloading runs and stops, and owing to intake valve cuts out, air-breathing district is no longer negative pressure, in order to prevent machine A small amount of residual water air-flow body of body overflows, and two ends are respectively mounted with an encapsulated oil sealing of lips, due to oil sealing not before bearing High pressure when being subjected to as loaded, so stress is the least, and is directly lubricated by water, is worn and torn the least, and service life is the longest.

Owing to the aqueous vapor fluid of main shunting zone 11A flows into annular cooling zone 17A from A, B mouth, make diagonally contact bearing 16A is adequately cooled；Pay again the aqueous vapor fluid of shunting zone 18A and flow into F1, F2 mouth to circumference array Cooling Holes 3A from E mouth, Left side cylinder roller bearing 1A is made also to be cooled down.The temperature that bearing runs has been taken away in fluid motion, makes the running temperature of bearing Basic identical with the delivery temperature balance of system, typically at about 50 DEG C, because bearing runs at normal temperatures, making of bearing can be kept With more than at least 5 years life-span.

Real example

As it is shown on figure 3, the single screw rod oilless (oil free) compressor screw drive mechanism Equilibrium Analysis of water spray: pay engagement at screw rod star-wheel In motion, due to the upper and lower of two star-wheel symmetrical screws, so radial force Pr1 and Pr2 suffered by screw rod can mutually balance, and In compression process, screw rod left side suction end is by the pressure Px1 of air, and left side high-pressure side is then mainly coordinated by screw rod body Axial force Px2 that the high-pressure fluid of clearance leakage produces.Owing to the pressure of air is the least, only 0.103Mpa, and Px2 pressure is Its several times, it is clear that two axial forces can not balance, when we feed back to left end the part Fx2 fluid pressure introducing of leakage, can Make Px1 and Px2 power reach relative equilibrium, greatly reduce the axial additional force suffered by right-hand corner contact bearing, extend bearing Service life.

4 screw holes and flow adjustment screw 9A at front dividing plate circumference array, can according to the axle suffered by screw body two end To power and fluid pressure balance situation, the method taking to pull down or screw on flow adjustment screw 9A, the leakage rate of regulated fluid, with Reach body and the pressure balance of screw rod two end fluid generation.

It is provided with 1 ball valve 12A, adjustable main shunting zone 11A at A12 and B1 and pays the flow-rate ratio of shunting zone 18A fluid Example size, the running temperature of fine-tuning two end bearings.

Real example as shown in Figure 4, the single screw rod oilless (oil free) compressor pressure and temperature equitable bearing seal cooling system of water spray System frame for movement.

The sealing cooling system of the single screw rod oilless (oil free) compressor pressure and temperature counterbalanced procedure of water spray and bearing mainly includes body Assembly, screw rod front-end bearing pedestal assembly, screw rod rear bearing block assembly, screw drive mechanism.

Described cylinder block set mainly includes that body 9 and motor connecting base 1, described body 9 are rectangles to profile, in The heart has screw hole, and with screw body precision-fit, vertical direction has a hole, for installing two spider gear shafts；Its left side spiral shell Nail installs front-end bearing pedestal 7 and motor connecting base 1；Rear bearing block 20 installed by right side screw, and on the right side of body, hole wall has tap hole A, the hole wall on the left of body has return port D.

Described screw rod front-end bearing pedestal assembly includes front-end bearing pedestal 7, fore bearing splicing sleeve 4, the encapsulated oil sealing of front lips 8, hole With back-up ring (2) 24, cylinder roller bearing 5, shaft block ring 27, fore bearing gland 3, O RunddichtringO (1) 6.

Described fore bearing splicing sleeve 4 is arranged on front-end bearing pedestal 7 with 6 screws, and to keep it relative to screw shaft The axiality of 23 axis.The encapsulated oil sealing of front lips 8 is arranged in the left hole of front-end bearing pedestal 7, and axially limits with hole back-up ring (2) Position；Cylinder roller bearing 5 outer ring is arranged in fore bearing 4 hole, right-hand member with hole inner face position, left end with fore bearing gland 3 its End face compresses；Fore bearing gland 3 is to be fixed on fore bearing support set with 4 screws, and the inner ring of cylinder roller bearing 5 is fixed on spiral shell On bar axle 23, and axially position with shaft block ring 27.

Described front-end bearing pedestal 7 is arranged on the left side of body 9 with 6 screws, and is sealed with O RunddichtringO (1).

Described front-end bearing pedestal 7 and fore bearing splicing sleeve 4 4-8 Cooling Holes of circumference array, when compressor operating, make water Air-flow body has reached the balance of system temperature by the outer ring of bearing.

Described screw rod rear bearing block assembly include rear bearing block 20, the encapsulated oil sealing of rear lips 18, hole back-up ring (1) 12, Diagonally contact bearing 14, bearing washer 17, bearing spacer 13, bearing plate 16, flow adjustment screw 19, O RunddichtringO (2).

Described rear bearing block 20 is fixed on the left side of body 9 with 8 screws, and to keep it relative to screw shaft The axiality of 23 axis.The encapsulated oil sealing of rear lips 18 is arranged in the hole on the right side of rear bearing block 20, and with hole back-up ring (1) 12 axle To location；During diagonally contact bearing 12 is arranged on the hole of rear bearing block 20, its inner ring is arranged on screw shaft 23, left side axle Holding spacer 13 to position, the right bearing plate 16 compresses spacing.Bearing outer ring left side bearing washer 17 positions, the right axle in the right The end face of pressure cap 15 compresses, and right bearing gland 15 is to be fixed on rear bearing block with 4 screws, and bearing plate 16 is with 3 Screw is fixed on the right side of screw shaft 23.

Described rear bearing block 20 is arranged to hollow current interlayer, makes bearing outer ring have an annular when compressor operating Current layer surrounds, it is ensured that bearing running temperature and the balance of compressor assembly running temperature.Arrange below rear bearing block 20 One bearing cooling zone fluid inlet B, is provided above a bearing cooling zone fluid issuing C and pays a shunting zone outlet E.

4 screws of the left side circumference array of described rear bearing block 20 and its Flow-rate adjustment 9A matched, by rotation Go up or pull down the leakage rate of part screw adjustable fluid and reach screw body two end and the stress balance of bearing axial force.

Described screw drive mechanism mainly includes screw rod 22, screw shaft 23, flat key 21, locking nut 10, shaft coupling 2.

Described screw rod 22 is linked together with screw shaft 23 by flat key 21, and its left side of screw rod is fixed by screw shaft step Position, the right screws in locking nut 10 and compresses.

Described screw shaft 23 and screw rod 22 pass through cylinder roller bearing 5 and diagonally contact bearing 14 on the right of left end Being supported on front-end bearing pedestal 17 and rear bearing block 20, screw rod 22, screw shaft 23, front-end bearing pedestal 17, rear bearing block 20 must keep On the same axis, just can ensure that the running accuracy of screw rod 22.

Described screw shaft 23 left side sponson is connected with shaft coupling 2, makes the motor being fixed on motor connecting base 1 Power is delivered to screw shaft by shaft coupling.

The above specific embodiment is only one of the present invention water spray single screw rod oilless (oil free) compressor pressure and temperature balance The sealing cooling system of method and bearing is preferred embodiment, it is noted that for the person of ordinary skill of the art, On the premise of conceiving without departing from the invention, it is also possible to making some deformation and improvement, these broadly fall into the protection of the present invention Scope.

The present invention: a kind of equitable great advantage of pressure and temperature spraying water single screw rod oilless (oil free) compressor is, uses The equilibrium principle of compressor fluid motion stress and temperature solves the design of the single screw rod oilless (oil free) compressor of restriction water spray, application pushes away Two wide big technical barriers: (1) bears the sealing member fluid leakage under high linear speed and fluid high-pressure situation and life-span short problem. (2) bearing of high speed rotating uses the grease lubrication mode of weak heat-dissipating to be easily generated high temperature, the problem that bearing service life is short.By upper Described, the most also can solve high-power water spray list screw rod oilless (oil free) compressor (132-350KW), the most unsolved close Envelope and the technical bottleneck of bearing high temperature, and the problem failing to develop powerful single screw rod oilless (oil free) compressor.

Claims (5)

1. water spray single screw rod oilless (oil free) compressor pressure and temperature balance system, is characterized in that including bearing waterproof sealing, cold But the pressure and temperature bascule used, and include the sealing and cooling device of bearing；

It is characterized in that including cylinder block set, screw rod front-end bearing pedestal assembly, screw rod rear bearing block assembly, screw drive mechanism and offer Turnover fluid bore and connecting line；

Described cylinder block set is characterized in that including body, motor connecting base and the fluid inlet being opened on body hole wall and going out Mouthful；

Described screw rod front-end bearing pedestal assembly is characterized in that including front-end bearing pedestal, fore bearing splicing sleeve, the encapsulated oil sealing of front lips, hole With back-up ring, cylinder roller bearing, shaft block ring, O RunddichtringO；Screw rod fore bearing assembly is arranged on the suction end of body；

Described screw rod rear bearing assembly is characterized in that including rear bearing block, the encapsulated oil sealing of rear lips, hole back-up ring, paired corner connection Contact bearing, bearing washer, bearing spacer, bearing plate, flow adjustment screw, O RunddichtringO, screw rod rear bearing block assembly are installed High-pressure side at body；

Described screw drive mechanism is characterized in that including screw rod, screw shaft, flat key, locking nut, shaft coupling；Screw shaft and spiral shell Bar is bearing on front-end bearing pedestal and rear bearing block by the cylinder roller bearing of left end and the diagonally contact bearing on the right, and spiral shell Bar front-end bearing pedestal and screw rod rear bearing block are respectively mounted and are fixed on body.

A kind of water spray the most according to claim 1 single screw rod oilless (oil free) compressor pressure and temperature balance system, is characterized in that Front-end bearing pedestal is being mounted with 1 encapsulated oil sealing of lips, during in order to prevent compressor unloading, water flow direction of flow near suction muffler side Bearing, cylinder roller bearing is arranged on screw shaft left end, and neutral is left in centre；Described front-end bearing pedestal and front axle splicing sleeve circumference 4-8 Cooling Holes of array is set, in order to be cooled in the cylinder roller bearing on the left side.

A kind of water spray the most according to claim 1 single screw rod oilless (oil free) compressor pressure and temperature balance system, is characterized in that It is mounted with 1 encapsulated oil sealing of lips, aqueous vapor fluid stream during in order to prevent compressor unloading in a shunting zone of paying for rear bearing block right-hand member To bearing, diagonally contact bearing is arranged on screw shaft right-hand member；

Described screw rod rear bearing block is provided with hollow current interlayer, makes diagonally contact bearing outer ring have an annular water layer bag Round, maintaining bearing running temperature in a basic balance identical with the system temperature of compressor, the upper and lower at rear bearing block respectively sets Put intake-outlet.

4. according to a kind of water spray single screw rod oilless (oil free) compressor pressure and temperature balance described in claim 1 or claim 3 it is System, is characterized in that its space is divided into main shunting zone and shunting zone by rear bearing block central dividing plate, and is introduced by its aqueous vapor fluid To bearing cooling zone, after cooling bearing, it is drawn into body suction muffler.

5. according to a kind of water spray single screw rod oilless (oil free) compressor pressure and temperature balance described in claim 1 or claim 3 it is System, is characterized in that screw rod rear bearing block left side circumference arranges 4 screws of array and the flow adjustment screw matched thereof, passes through Screw on or pull down the leakage rate of part screw adjustable fluid, and reach to regulate two end bearing axial forces and make its stress balance.