CN114876797B

CN114876797B - Double-screw four-star wheel compressor

Info

Publication number: CN114876797B
Application number: CN202210707674.XA
Authority: CN
Inventors: 张兆恒; 杨小平
Original assignee: Haomi Power Equipment Co ltd
Current assignee: Haomi Power Equipment Co ltd
Priority date: 2022-06-22
Filing date: 2022-06-22
Publication date: 2023-05-16
Anticipated expiration: 2042-06-22
Also published as: CN114876797A

Abstract

The utility model relates to a four star gear compressors of twin-screw relates to screw compressor's technical field, and it includes the casing, rotate the screw rod of installing in the casing and with the star gear that the screw rod meshing set up, the star gear rotates to be installed on the casing, the star gear includes fixed mounting star wheel seat on the casing, slidable mounting be in a plurality of trapezoidal star teeth of a cogwheel piece and the drive on the star wheel seat the compensation assembly that the star wheel tooth piece moved along star wheel seat radial direction, the star wheel tooth piece supports tightly in the helicla flute of screw rod. This application is through setting up compensation component, when producing the clearance between the helicla flute of star gear tooth piece and screw rod, utilizes compensation component drive star gear tooth piece to slide along the direction of keeping away from star wheel seat center for star gear tooth piece supports again tightly in the helicla flute of screw rod, realizes the clearance compensation between star gear tooth and the helicla flute, has promoted the sealed effect between star gear tooth and the helicla flute, has improved the problem that the compressor efficiency that leads to because of wearing and tearing reduces.

Description

Double-screw four-star wheel compressor

Technical Field

The application relates to the technical field of screw compressors, in particular to a double-screw four-star wheel compressor.

Background

The screw compressor consists of a cylindrical screw and two plane star wheels which are symmetrically arranged to form a meshing pair, and the meshing pair is arranged in a shell. The screw groove, the inner wall of the shell and the star wheel teeth form a closed volume. The power is transmitted to the screw shaft, and the screw drives the star wheel to rotate. The gas enters the spiral groove from the suction cavity, is compressed and is discharged through the discharge orifice and the discharge cavity. The function of the star wheel is equivalent to that of a piston of a reciprocating piston compressor, and when the star wheel teeth move relatively in the screw grooves, the closed volume is gradually reduced, so that the compression of gas is realized.

In the related art, a screw shaft and a star wheel shaft are mutually perpendicular, star wheel teeth are embedded into a spiral groove, and the space of the spiral groove is divided; the rotation of the screw drives the star wheel to rotate; the spiral groove space divided by the star wheel periodically increases and decreases along with the rotation of the screw rod; the space increasing process is an air suction process and the space reducing process is a compression process and an air discharge process.

The inventors of the related art found that, after a period of use, friction is generated between the screw groove and the star wheel teeth, so that the gap between the screw groove and the star wheel teeth is increased, and in the process of compressing the gas by matching the screw with the star wheel, the gas leaks from the gap between the screw groove and the star wheel teeth, so that the working efficiency of the compressor is reduced.

Disclosure of Invention

In order to solve the problem that the working efficiency of the compressor is affected by gaps between spiral grooves and star wheel teeth, the application provides a double-screw four-star wheel compressor.

The application provides a twin-screw four star gear compressor adopts following technical scheme:

the utility model provides a four star gear compressors of twin-screw, includes the casing, rotates the screw rod of installing in the casing and with the star gear that the screw rod meshing set up, the star gear rotates to be installed on the casing, the star gear includes fixed mounting star wheel seat on the casing, slidable mounting be in a plurality of trapezoidal star teeth of a cogwheel piece and the drive on the star wheel seat the compensation assembly of star teeth of a cogwheel piece along star wheel seat radial direction motion, star teeth of a cogwheel piece supports tightly in the helicla flute of screw rod.

Through adopting above-mentioned technical scheme, through setting up compensation component, when producing the clearance between the helicoidal groove of star gear tooth piece and screw rod, utilize compensation component drive star gear tooth piece to slide along the direction of keeping away from star wheel seat center for star gear tooth piece supports again and tightly in the helicoidal groove of screw rod, realizes the clearance compensation to between star gear tooth and the helicoidal groove, has promoted the sealed effect between star gear tooth and the helicoidal groove, has improved the problem that the compressor efficiency reduces because of wearing and tearing lead to.

Optionally, the compensation subassembly include with the coaxial push away of setting of star wheel seat, the spacing groove has been seted up along radial direction to star wheel seat terminal surface, slidable mounting has the push pedal in the spacing groove, star wheel tooth piece fixed mounting is in the push pedal, fixed mounting has the guide bar in the push pedal, a plurality of guide slots have been seted up to the slope on pushing away the dish the guide bar wears to establish in the guide slot.

Through adopting above-mentioned technical scheme, when utilizing compensation component drive star teeth of a cogwheel piece to slide, rotate the pushing disc, the guide way on the pushing disc takes place to rotate along with the pushing disc, then make slidable mounting take place the displacement at the guide bar in the guide way, drive the push pedal simultaneously and take place the displacement, simultaneously under the spacing effect of spacing groove for the push pedal moves along the direction of keeping away from the star wheel seat, moves to the direction that drives star teeth of a cogwheel piece to being close to the screw rod promptly, star teeth of a cogwheel piece compresses tightly in the helicoid, realizes the gap compensation.

Optionally, a chute is formed in the wall of the limit groove, a sliding plate is arranged on the side wall of the push plate, and the sliding plate is slidably mounted in the chute.

Through adopting above-mentioned technical scheme, set up the slide in the both sides of push pedal, utilize the cooperation of slide and spout, improve the stability of push pedal at spacing inslot motion, the spout plays spacing effect to the slide in the axis direction of star wheel seat simultaneously, reduces the risk that the push pedal takes place to break away from in the spacing inslot.

Optionally, a stop is disposed at an end of the guide rod, and the stop has a width greater than that of the guide groove.

Through adopting above-mentioned technical scheme, through setting up the dog, the dog is used in the pushing away on the dish that the guide way is located for push away the dish and be used in the guide bar all the time, reduce the risk of taking place the displacement between pushing away dish and the guide bar.

Optionally, a sleeve is sleeved on the guide rod, and the outer wall of the sleeve abuts against the wall of the guide groove.

Through adopting above-mentioned technical scheme, through setting up the sleeve, the sleeve can take place to rotate along the guide bar, and the sleeve changes the sliding friction between guide slot cell wall and the guide bar into rotation friction, reduces the risk of taking place wearing and tearing between pushing away dish and the guide arm.

Optionally, a first gear is fixedly installed on the push disc, a second gear is rotatably installed on the casing, and the first gear and the second gear are meshed

Through adopting above-mentioned technical scheme, because the great drive of pushing away the dish volume is unchangeable, when the drive pushes away the dish and rotates, drive second gear rotates, and the second gear drives first gear and rotates, and first gear drives and pushes away the dish rotation, and first gear and second gear meshing set up, improve power transmission's stability, be convenient for simultaneously drive pushing away the dish.

Optionally, a gear shaft is arranged in the second gear in a penetrating way, a torsion spring is sleeved on the gear shaft, one end of the torsion spring is abutted against the gear shaft, and the other end of the torsion spring is abutted against the casing.

Through adopting above-mentioned technical scheme, through the cover establish torsion spring on the gear shaft, torsion spring is under its own elastic potential energy effect, gives the gear shaft torsional force all the time, and the gear shaft passes through second gear and first gear transmission to push away on the dish with torsion for push away the dish all the time has the effort that drives star gear tooth piece to the helicoidal groove and compress tightly, makes star gear tooth piece all the time act on the cell wall of helicoidal groove, realizes the continuous compensation in clearance, effectively avoids the production in clearance, improves the compression effect of compressor.

Optionally, the number of screw rods is set up to two, the star wheel has the setting in the both sides of arbitrary screw rod, two the screw rod axis coincidence, and relative setting.

Through adopting above-mentioned technical scheme, through setting up the quantity of screw rod into two, two screw rods and star gear cooperation combined action, driving motor drive screw rod drive two screw rods simultaneous interaction improves the work efficiency of compressor.

Optionally, the star wheel tooth piece is connected with the push plate through a bolt.

Through adopting above-mentioned technical scheme, through passing through bolted connection between star gear tooth piece and the push pedal, the timely change of star gear tooth piece in the push pedal of being convenient for is comparatively serious in star gear tooth piece wearing and tearing can't carry out the continuous compensation, and the direct change star gear tooth piece can.

In summary, the present application includes at least one of the following beneficial technical effects:

1. by arranging the compensation component, when a gap is generated between the star wheel tooth piece and the screw groove of the screw rod, the star wheel tooth piece is driven by the compensation component to slide along the direction away from the center of the star wheel seat, so that the star wheel tooth piece is propped against the screw groove of the screw rod again, gap compensation between the star wheel tooth and the screw groove is realized, the sealing effect between the star wheel tooth and the screw groove is improved, and the problem of efficiency reduction of the compressor caused by abrasion is solved;

2. the sliding plates are arranged on the two sides of the push plate, so that the stability of the movement of the push plate in the limit groove is improved by utilizing the cooperation of the sliding plates and the sliding grooves, and meanwhile, the sliding grooves play a role in limiting the sliding plates in the axial direction of the star wheel seat, so that the risk of disengaging the push plate in the limit groove is reduced;

3. through the torsion spring is established to the cover on the gear shaft, and torsion spring is under its own elastic potential energy effect, gives gear shaft torsional force all the time, and the gear shaft passes through second gear and first gear with torsion and transmits to the pushing disc on for the pushing disc has the effort that drives star tooth piece to the helicoidal groove compress tightly all the time, makes star tooth piece act on the cell wall of helicoidal groove all the time, realizes the continuous compensation in clearance, effectively avoids the production in clearance, improves the compression effect of compressor.

Drawings

Fig. 1 is a schematic overall structure of an embodiment of the present application.

Fig. 2 is a schematic view showing the structure of a screw in the embodiment of the present application.

Fig. 3 is a schematic structural diagram of a star wheel according to an embodiment of the present application.

Fig. 4 is a schematic structural view showing a pushing disc according to an embodiment of the present application.

Fig. 5 is a schematic structural view showing a push plate according to an embodiment of the present application.

Reference numerals illustrate: 1. a housing; 2. a screw; 3. star wheels; 31. star wheel seat; 32. star gear tooth sheets; 33. a compensation component; 331. pushing the disc; 4. a screw groove; 5. a limit groove; 6. a push plate; 7. a guide rod; 8. a guide groove; 9. a chute; 10. a slide plate; 11. a stop block; 12. a sleeve; 13. a first gear; 14. a second gear; 15. a gear shaft; 16. a torsion spring.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-5.

The embodiment of the application discloses a double-screw four-star wheel compressor.

Referring to fig. 1 and 2, a twin-screw four-star wheel compressor includes a casing 1, the casing 1 is made of metal material, two screws 2 are rotatably installed in the casing 1, the two screws 2 are coaxially arranged, a sleeve ring is sleeved at the joint of the two screw 2 shafts, the rotation directions are the same, a sealing ring is sleeved at the end part of any screw 2, and the sealing ring is positioned at the end parts of the screws 2, which are close to each other.

The two sides of any screw rod 2 are provided with star wheels 3, the number of the star wheels 3 is 4, the star wheels 3 are arranged on two sides of different screw rods 2 in a group, and the axis of the star wheels 3 is mutually perpendicular to the axial direction of the screw rods 2.

Referring to fig. 3 and 4, the star wheel 3 includes a star wheel seat 31 and a compensation component 33, the star wheel seat 31 is a disc, a metal rod is arranged in a penetrating manner in the center, and the metal rod is rotatably installed on the casing 1. The upper end face of the star wheel seat 31 is provided with a plurality of limit grooves 5 along the radial direction of the axis of the star wheel seat 31, and in the embodiment of the application, the number of the limit grooves 5 is 11, and the limit grooves are symmetrically arranged about the axis center of the star wheel seat 31.

A push plate 6 is slidably arranged in the limit groove 5. The end of the push plate 6 far away from the star wheel seat 31 is provided with a star wheel tooth piece 32 through a bolt, and the star wheel tooth piece 32 is abutted against the wall of the screw groove 4 of the screw rod 2. The compensation component 33 is utilized to drive the push plate 6 to move along the direction deviating from the star wheel seat 31, so that the feeding of the star wheel tooth piece 32 to the groove wall direction of the spiral groove 4 is realized, the star wheel tooth piece 32 is abutted against the groove wall of the spiral groove 4, the gap compensation between the star wheel 3 teeth and the spiral groove 4 is realized, the sealing effect between the star wheel 3 teeth and the spiral groove 4 is improved, and the problem of the reduction of the efficiency of the compressor caused by abrasion is solved.

Referring to fig. 4 and 5, sliding plates 10 are integrally formed on the two side walls of the push plate 6 near the lower end along the length direction of the sliding plates, sliding grooves 9 are formed on the groove walls on the two sides of the limiting groove 5, and the groove bottoms of the sliding grooves 9 are flush with the groove bottoms of the limiting groove 5. The cooperation of slide 10 and spout 9 improves the stability of push pedal 6 in spacing inslot 5 motion, and spout 9 plays spacing effect to slide 10 in the axis direction of star wheel seat 31 simultaneously, reduces the risk that push pedal 6 takes place to break away from in spacing inslot 5.

The push plate 6 is welded with a guide rod 7, the guide rod 7 is sleeved with a sleeve 12, and the end part of the guide rod 7 is provided with a stop block 11 through a bolt.

The compensation component 33 comprises a pushing disc 331 rotatably mounted on the star wheel seat 31, wherein a plurality of limiting grooves 5 are obliquely arranged on the pushing disc 331, the number of the limiting grooves 5 is 11 as same as that of the pushing plates 6, and the limiting grooves are symmetrically arranged about the axis center of the pushing disc 331. The limiting grooves 5 are arc-shaped and uniformly arranged on the push disk 331 in a rotary radial shape. The outer wall of the sleeve 12 abuts against the groove wall of the limit groove 5. The width of the limit groove 5 is slightly smaller than that of the stop block 11. The stopper 11 presses the push plate 331 against the push plate 6, reducing the risk of detachment between the push plate 6 and the push plate 331. The sleeve 12 can rotate along the guide rod 7, and the sleeve 12 converts sliding friction between the groove wall of the guide groove 8 and the guide rod 7 into rotating friction, so that the risk of abrasion between the push disc 331 and the guide rod is reduced.

When the compensation component 33 is utilized to drive the star wheel tooth piece 32 to slide, the push disc 331 is rotated, the guide groove 8 on the push disc 331 rotates along with the push disc 331, then the guide rod 7 which is slidably installed in the guide groove 8 is displaced, meanwhile, the push plate 6 is driven to displace, and meanwhile, under the limiting effect of the limiting groove 5, the push plate 6 moves along the direction away from the star wheel seat 31, namely, the star wheel tooth piece 32 is driven to move towards the direction close to the screw rod 2, and the star wheel tooth piece 32 is pressed in the screw groove 4.

A first gear 13 is welded and installed at the center of the end face of the push disc 331, and the first gear 13 is sleeved on the shaft of the screw 2; the casing 1 is rotatably provided with a second gear 14, and the first gear 13 is meshed with the second gear 14. The second gear 14 is fixedly provided with a gear shaft 15 in a penetrating manner through a key, a spring hole is formed in the gear shaft 15 along the direction perpendicular to the axis of the gear shaft 15, a torsion spring 16 is sleeved on the gear shaft 15, one end of the torsion spring 16 is inserted and installed in the spring hole, and the other end of the torsion spring 16 abuts against the outer wall of the casing 1.

The torsion spring 16 always gives torsion to the gear shaft 15 under the action of own elastic potential energy, and the gear shaft 15 transmits the torsion to the push disc 331 through the second gear 14 and the first gear 13, so that the push disc 331 always has acting force for driving the star gear tooth piece 32 to compress towards the spiral groove 4, and the star gear tooth piece 32 always acts on the groove wall of the spiral groove 4, so that continuous compensation of a gap is realized, the generation of the gap is effectively avoided, and the compression effect of the compressor is improved.

The implementation principle of the double-screw four-star wheel compressor provided by the embodiment of the application is as follows: when compensating the gap between the star wheel tooth piece 32 and the spiral groove 4, the torsion spring 16 has elastic potential energy, the potential energy of the torsion spring is converted into torsion force to be transmitted to the gear shaft 15, the gear shaft 15 transmits the torsion force to the push disc 331 through the second gear 14 and the first gear 13, the push disc 331 is rotated, the guide groove 8 rotates along with the push disc 331, the guide rod 7 is pulled to move, and meanwhile, under the action of the limiting groove 5, the push plate 6 moves to a position far away from the center of the star wheel seat 31, even if the star wheel tooth piece 32 at the end part of the push plate moves in the spiral groove 4, the gap compensation between the star wheel 3 tooth and the spiral groove 4 is realized, the sealing effect between the star wheel 3 tooth and the spiral groove 4 is improved, and the problem of the reduction of the efficiency of the compressor caused by abrasion is solved.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims

1. A twin screw four star wheel compressor, characterized in that: including casing (1), rotate install screw rod (2) in casing (1) and with star gear (3) that screw rod (2) meshing set up, star gear (3) rotate and install on casing (1), its characterized in that, star gear (3) are in including fixed mounting star gear seat (31) on casing (1), slidable mounting star gear tooth piece (32) and drive a plurality of trapezoidal star gear tooth piece (32) on star gear seat (31) are along compensating component (33) of star gear seat (31) radial direction motion, star gear tooth piece (32) support tightly in spiral shell groove (4) of screw rod (2), compensating component (33) include with star gear seat (31) coaxial arrangement's pushing disc (331), limit groove (5) have been seted up along radial direction to star gear seat (31) terminal surface, slidable mounting has push pedal (6) in limit groove (5), star gear tooth piece (32) fixed mounting is in on push pedal (6), fixed mounting has guide bar (7) on push pedal (6), guide bar (8) are seted up to slope guide bar (8).

2. The twin screw four-star compressor of claim 1, wherein: a chute (9) is formed in the chute wall of the limiting chute (5), a sliding plate (10) is arranged on the side wall of the push plate (6), and the sliding plate (10) is slidably mounted in the chute (9).

3. The twin screw four-star compressor of claim 1, wherein: the end part of the guide rod (7) is provided with a stop block (11), and the width of the stop block (11) is larger than that of the guide groove (8).

4. The twin screw four-star compressor of claim 1, wherein: the guide rod (7) is sleeved with a sleeve (12), and the outer wall of the sleeve (12) is abutted against the groove wall of the guide groove (8).

5. The twin screw four-star compressor of claim 1, wherein: the push disc (331) is fixedly provided with a first gear (13), the casing (1) is rotatably provided with a second gear (14), and the first gear (13) and the second gear (14) are meshed.

6. The twin screw four-star compressor of claim 5, wherein: a gear shaft (15) is arranged in the second gear (14) in a penetrating way, a torsion spring (16) is sleeved on the gear shaft (15), one end of the torsion spring (16) is abutted against the gear shaft (15), and the other end of the torsion spring is abutted against the machine shell (1).

7. The twin screw four-star compressor of claim 1, wherein: the number of the screw rods (2) is two, the star wheel (3) is arranged on two sides of any screw rod (2), and the axes of the two screw rods (2) are coincident and are oppositely arranged.

8. The twin screw four-star compressor of claim 1, wherein: the star wheel tooth piece (32) is connected with the push plate (6) through bolts.