CN114673645A

CN114673645A - Wear-resistant high-pressure compressor

Info

Publication number: CN114673645A
Application number: CN202210244756.5A
Authority: CN
Inventors: 孙立东; 安丽丽; 章轶明; 刘易; 孙豪杰; 范瑞欣; 吕沛祺
Original assignee: Hangzhou New Asia Cryogenic Technology Co ltd
Current assignee: Hangzhou New Asia Cryogenic Technology Co ltd
Priority date: 2022-03-14
Filing date: 2022-03-14
Publication date: 2022-06-28

Abstract

The invention relates to the technical field of compressors, in particular to a wear-resistant high-pressure compressor, which comprises a shell, a crankshaft and piston rods, wherein a swash plate bearing is arranged on the surface of one end of the crankshaft, and a connecting assembly is arranged between the circumferential surface of the swash plate bearing and the two piston rods; through the inside ball that sets up at the rack, when the fluted disc was to the inside transmission axial piston power of rack, the upper and lower surface of fluted disc and the surface contact of ball, the ball rotated in the inside of rotation groove, further reduced the degree of wear between fluted disc and the rack, prolonged the life of compressor.

Description

Wear-resistant high-pressure compressor

Technical Field

The invention relates to the technical field of compressors, in particular to a wear-resistant high-pressure compressor.

Background

The compressor is a driven fluid machine for lifting low-pressure gas into high-pressure gas, and is the heart of a refrigeration system, low-temperature and low-pressure refrigerant gas is sucked from an air suction pipe, after the refrigerant gas is compressed by driving a piston through the operation of a motor, high-temperature and high-pressure refrigerant gas is discharged to an exhaust pipe, so as to provide power for a refrigeration cycle, at present, a bolt type swash plate shaft structure comprises a cylinder, the cylinder is connected with the piston in a sliding manner, the cylinder is connected with a main shaft in a rotating manner, the main shaft is fixedly connected with a spiral swash plate, the piston is fixedly connected with a piston seat, a connecting groove is formed in the piston seat, the edge of the spiral swash plate is arranged in the connecting groove, the swash plate is driven to rotate when the main shaft rotates, the piston seat is driven to linearly slide in a reciprocating manner when the swash plate rotates, so as to adjust the piston to slide in a reciprocating manner, and further achieve the purpose of compressing air, but the swash plate is connected with the piston seat in a sliding manner, therefore, the friction force between the swash plate and the piston seat is large, the swash plate and the piston seat are easy to wear, and the service life of the swash plate type compressor is influenced;

in view of the above technical drawbacks, a solution is proposed.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects in the prior art, the invention provides a wear-resistant high-pressure compressor, which solves the following problems:

(1) the sliding connection between the swash plate and the piston seat is seriously abraded, and the service life of the compressor is reduced;

(2) in the reciprocating process of the piston seat, the internal sealing performance of the compressor is easy to be poor, and the lubricating effect between the swash plate and the piston seat is reduced.

(II) technical scheme

In order to realize the purpose, the invention is realized by the following technical scheme:

a wear-resistant high-pressure compressor comprises a shell, a crankshaft and piston rods, wherein the crankshaft is rotatably arranged in the shell, two piston rods are also slidably arranged on two sides in the shell, two first movable holes are symmetrically formed in the front side of the interior of the shell, front guide rings are arranged in the two first movable holes, two second movable holes are symmetrically formed in the rear side of the interior of the shell, rear guide rings are arranged in the two second movable holes, sealing assemblies are arranged in the first movable holes and the second movable holes, a swash plate bearing is arranged on the surface of one end of the crankshaft, and a connecting assembly is arranged between the circumferential surface of the swash plate bearing and the two piston rods;

The connecting assembly comprises a fluted disc and a rack, the fluted disc is arranged on the surface of the swash plate bearing, the rack is arranged on one side of the piston rod close to the swash plate bearing, and the peripheral surface of the fluted disc is in meshing transmission with the inside of the rack.

Preferably, the rack is provided with a rotation groove in the vertical symmetry, a ball is arranged in the rotation groove, and the surface of the ball extends to the outside of the rotation groove.

Preferably, an upper bearing is disposed on the front side of the inside of the housing, a lower bearing is disposed on the rear side of the inside of the housing, and one end of the crankshaft penetrates through the upper bearing and the lower bearing.

Preferably, an oil filling hole is formed in the front face of the machine shell, and an atomizing nozzle is arranged inside the oil filling hole.

Preferably, sealing assembly includes the sealing ring, and the sealing ring setting is in the inside in first activity hole, the movable groove has been seted up to the inside of sealing ring, and the inside in movable groove is provided with sealed the pad, one side of activity inslot wall is provided with the elastic component, and the one end of elastic component is connected with the sealed one side of filling up, the sealed internal surface that fills up and the surface laminating of piston rod.

Preferably, the elastic part is a spring or a spring sheet, the outer side of the sealing gasket is positioned in the movable groove and arranged in a sliding mode, and the inner side of the sealing gasket extends to the outer portion of the movable groove.

Preferably, the working method of the connecting assembly and the sealing assembly is as follows: the motor drives the crankshaft to rotate in the shell, the crankshaft drives the swash plate bearing on the surface to rotate in the rotating process, then the swash plate bearing drives the fluted disc arranged on the surface to synchronously rotate, and the fluted disc transmits axial piston force in the rotating process through meshing transmission between the fluted disc and the rack so that the rack drives the piston rod to do up-and-down reciprocating motion in the shell; the sealing gasket is characterized in that the sealing gasket is arranged on the front end of the shell, the front end of the piston rod is connected with the front guide ring and the rear guide ring in a sliding mode, the front guide ring and the rear guide ring are connected with each other in a sliding mode, the front guide ring and the rear guide ring are connected with the front guide ring and the rear guide ring.

(III) advantageous effects

The invention provides a wear-resistant high-pressure compressor, which has the following beneficial effects compared with the prior art:

the swash plate bearing is arranged on the surface of one end of the crankshaft, the fluted disc is arranged on the peripheral surface of the swash plate bearing, the toothed racks are arranged on one sides of the two piston rods close to the crankshaft in a matching mode, and the toothed disc and the toothed racks are driven by the meshing transmission between the toothed disc and the toothed racks, so that the swash plate bearing is driven by the crankshaft to rotate simultaneously, the toothed disc and the swash plate bearing synchronously rotate, the toothed disc transmits axial piston force to the inside of the toothed racks, the toothed racks drive the piston rods to reciprocate up and down in the casing, the upper surface and the lower surface of the toothed disc are sequentially contacted with the inside of the toothed racks, and compared with the existing hinge and ball joint, the wear can be effectively reduced, and the service life of the compressor is prolonged; the balls are arranged in the rack, so that when the fluted disc transmits axial piston force to the inside of the rack, the upper surface and the lower surface of the fluted disc are in contact with the surfaces of the balls, and the balls rotate in the rotating groove, so that the abrasion degree between the fluted disc and the rack is further reduced, and the service life of the compressor is prolonged; the atomization nozzle is arranged in the oil injection hole of the shell, lubricating oil is poured into the shell after atomization treatment, the atomized oil is used for lubricating the position between the fluted disc and the rack, the axial piston force transmission between the fluted disc and the rack is reduced, meanwhile, the sealing gasket arranged on the surface of the piston rod is used for guaranteeing the sealing performance in the shell, and after the sealing gasket is worn, the elastic piece is used for complementing the abrasion loss of the sealing gasket, so that the sealing performance of the sealing gasket on the interior of the shell is guaranteed; the swash plate bearing and the fluted disc are arranged on the surface of the crankshaft, the rack is arranged on one side of the piston rod, the whole transmission mechanism is compact in structure and small in size, is suitable for internal piston force transmission work of a small high-pressure compressor, and is long in service life and simple to assemble.

Drawings

Fig. 1 is a schematic view of a casing structure in embodiment 1 of the present invention;

FIG. 2 is an enlarged view of the structure of FIG. 1 at A in accordance with the present invention;

FIG. 3 is a schematic view of a meshing relationship structure between a gear plate and a rack according to the present invention;

fig. 4 is a sectional view of a housing structure in embodiment 2 of the invention;

FIG. 5 is an enlarged view of the structure of FIG. 4 at B in accordance with the present invention;

FIG. 6 is a partial cross-sectional view of the enclosure and seal assembly of the present invention;

fig. 7 is an enlarged view of the structure of fig. 6 at C according to the present invention.

In the figure: 10. a housing; 20. a crankshaft; 30. a piston rod; 40. a first movable hole; 50. a front guide ring; 60. a second movable hole; 70. a rear guide ring; 80. an atomizing nozzle; 90. an upper bearing; 100. a lower bearing; 110. a swash plate bearing; 101. a fluted disc; 102. a rack; 201. a rotating groove; 202. a ball bearing; 301. a seal ring; 302. a movable groove; 303. a gasket; 304. an elastic member.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1:

referring to fig. 1-3, a wear-resistant high-pressure compressor includes a casing 10, a crankshaft 20 and piston rods 30, the crankshaft 20 is rotatably disposed inside the casing 10, two piston rods 30 are slidably disposed on two sides inside the casing 10, two first movable holes 40 are symmetrically disposed on a front side inside the casing 10, front guide rings 50 are disposed inside the two first movable holes 40, two second movable holes 60 are symmetrically disposed on a rear side inside the casing 10, rear guide rings 70 are disposed inside the two second movable holes 60, sealing members are disposed inside the first movable holes 40 and the second movable holes 60, oil filling holes are disposed on a front side of the casing 10, atomizing nozzles 80 are disposed inside the oil filling holes, the atomizing nozzles 80 atomize lubricating oil and guide the lubricating oil into the casing 10, and the atomized lubricating oil lubricates parts inside the casing 10, an upper bearing 90 is arranged at the front side of the inside of the casing 10, a lower bearing 100 is arranged at the rear side of the inside of the casing 10, one end of the crankshaft 20 penetrates through the upper bearing 90 and the lower bearing 100, a swash plate bearing 110 is arranged on the surface of one end of the crankshaft 20, and a connecting component is arranged between the circumferential surface of the swash plate bearing 110 and the two piston rods 30;

The connecting assembly comprises a toothed disc 101 and a rack 102, the toothed disc 101 is arranged on the surface of the swash plate bearing 110, the rack 102 is arranged on one side of the piston rod 30 close to the swash plate bearing 110, and the peripheral surface of the toothed disc 101 is in meshing transmission with the inside of the rack 102; the crankshaft 20 is driven by the motor to rotate in the casing 10, the crankshaft 20 drives the swash plate bearing 110 arranged on the surface to rotate in the rotating process, the motion track of the swash plate bearing 110 is an arc line, the toothed disc 101 is arranged on the surface of the swash plate bearing 110, meanwhile, the rack 102 meshed with the toothed disc 101 is arranged on one side, close to the swash plate bearing 110, of the two piston rods 30, the swash plate bearing 110 drives the toothed disc 101 to rotate, the peripheral surface of the toothed disc 101 is meshed with the inside of the rack 102 to transmit axial piston force, the upper surface and the lower surface of the toothed disc 101 are sequentially contacted with the inside of the rack 102, compared with the existing hinge and ball joint, the abrasion can be effectively reduced, the two racks 102 are driven by the toothed disc 101 to move up and down in the casing 10, and the rack 102 drives the two piston rods 30 to reciprocate in the casing 10, so as to realize the compression work of the high-pressure compressor, during the reciprocating motion of the two piston rods 30, the piston rods 30 are guided by the front guide ring 50 and the rear guide ring 70 offsetting the radial component force of the piston rods 30.

Example 2:

as shown in fig. 4-5, as a further improvement of the above embodiment 1, the coupling assembly of the present invention may further include a toothed disc 101 and a rack 102 that are engaged with each other, and rotation grooves 201 are formed in the rack 102 in an up-down symmetrical manner, and balls 202 are disposed in the rotation grooves 201, and surfaces of the balls 202 extend to an outer portion of the rotation grooves 201, during the rotation of the swash plate bearing 110, a circumferential surface of the toothed disc 101 is engaged with an inner portion of the rack 102 to transmit axial piston force, upper and lower surfaces of the toothed disc 101 are sequentially in surface contact with the balls 202 in the rack 102, and the balls 202 rotate in the rotation grooves 201, thereby further reducing an amount of wear between the toothed disc 101 and the rack 102, and prolonging a service life of the compressor.

Example 3:

as shown in fig. 6-7, as a further supplement to the above embodiment 1, the sealing assembly of the present invention includes a sealing ring 301, the sealing ring 301 is disposed inside the first movable hole 40, a movable groove 302 is disposed inside the sealing ring 301, and a sealing pad 303 is disposed inside the movable groove 302, wherein an outer side of the sealing pad 303 is disposed inside the movable groove 302 in a sliding manner, an inner side of the sealing pad 303 extends to an outer side of the movable groove 302, an elastic member 304 is disposed on one side of an inner wall of the movable groove 302, and one end of the elastic member 304 is connected to one side of the sealing pad 303, wherein the elastic member 304 is a spring or a resilient plate, an inner surface of the sealing pad 303 is attached to a surface of the piston rod 30, when the piston rod 30 reciprocates, the sealing pad disposed inside the sealing ring 301 is used to seal a surface of the piston rod 30, so as to ensure the sealing performance inside the housing 10, atomized oil is blown into the housing 10 through the atomizing nozzle 80, the atomized oil is used for lubricating the connection between the fluted disc 101 and the rack 102, the abrasion degree between the fluted disc 101 and the rack 102 is further reduced, the service life of the compressor is prolonged, the sealing gasket 303 is abraded after being used for a period of time, at the moment, the elastic piece 304 pushes the sealing gasket 303 to the surface of the piston rod 30, the abrasion loss of the sealing gasket 303 is complemented, and the sealing effect of the sealing gasket 303 on the piston rod 30 is ensured.

Example 4:

referring to fig. 1-7, the present invention also discloses a method for using a wear-resistant high pressure compressor, comprising the steps of:

the crankshaft 20 is driven by a motor to rotate in the casing 10, the crankshaft 20 drives the swash plate bearing 110 on the surface to rotate in the rotating process, then the swash plate bearing 110 drives the fluted disc 101 arranged on the surface to synchronously rotate, and the fluted disc 101 transmits axial piston force in the rotating process through meshing transmission between the fluted disc 101 and the rack 102, so that the rack 102 drives the piston rod 30 to do up-and-down reciprocating motion in the casing 10; the balls 202 may also be disposed inside the rack 102, at this time, the surface of the toothed disc 101 contacts with the surfaces of the balls 202, the toothed disc 101 transmits an axial piston force during rotation, so that the rack 102 drives the piston rod 30 to reciprocate up and down inside the housing 10, two ends of the surface of the piston rod 30 are slidably connected to the inside of the front guide ring 50 and the rear guide ring 70, respectively, the front guide ring 50 and the rear guide ring 70 are used to guide the movement of the piston rod 30, so as to counteract the radial component force, meanwhile, atomized oil is blown into the casing 10 through the atomizing nozzle 80, and the atomized oil lubricates the connection between the fluted disc 101 and the rack 102, so as to reduce the abrasion degree between the fluted disc 101 and the rack 102, when the sealing gasket 303 is worn after being used for a period of time, the elastic element 304 pushes the sealing gasket 303 to the surface of the piston rod 30 to complement the wear amount of the sealing gasket 303 and ensure the sealing effect of the sealing gasket 303 on the piston rod 30.

And those not described in detail in this specification are well within the skill of those in the art.

It should be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a stand wear and tear high pressure compressor, includes casing (10), bent axle (20) and piston rod (30), the inside of casing (10) is rotated and is provided with bent axle (20), and the inside both sides of casing (10) still slide and be provided with two piston rods (30), its characterized in that: the front side of the interior of the shell (10) is symmetrically provided with two first movable holes (40), the interiors of the two first movable holes (40) are respectively provided with a front guide ring (50), the rear side of the interior of the shell (10) is symmetrically provided with two second movable holes (60), the interiors of the two second movable holes (60) are respectively provided with a rear guide ring (70), the interiors of the first movable holes (40) and the second movable holes (60) are respectively provided with a sealing assembly, the surface of one end of the crankshaft (20) is provided with a swash plate bearing (110), and a connecting assembly is arranged between the circumferential surface of the swash plate bearing (110) and the two piston rods (30);

The connecting assembly comprises a fluted disc (101) and a rack (102), the fluted disc (101) is arranged on the surface of the swash plate bearing (110), the rack (102) is arranged on one side, close to the swash plate bearing (110), of the piston rod (30), and the peripheral surface of the fluted disc (101) is in meshing transmission with the inside of the rack (102).

2. A wear resistant high pressure compressor as set forth in claim 1, wherein: the rack is characterized in that rotating grooves (201) are formed in the rack (102) in an up-down symmetrical mode, balls (202) are arranged in the rotating grooves (201), and the surfaces of the balls (202) extend to the outer portions of the rotating grooves (201).

3. A wear resistant high pressure compressor as set forth in claim 1, wherein: an upper bearing (90) is arranged on the front side of the interior of the machine shell (10), a lower bearing (100) is arranged on the rear side of the interior of the machine shell (10), and one end of the crankshaft (20) penetrates through the interiors of the upper bearing (90) and the lower bearing (100).

4. A wear-resistant high-pressure compressor as set forth in claim 1, wherein: an oil filling hole is formed in the front face of the machine shell (10), and an atomizing nozzle (80) is arranged inside the oil filling hole.

5. A wear resistant high pressure compressor as set forth in claim 1, wherein: the sealing assembly comprises a sealing ring (301), the sealing ring (301) is arranged inside a first movable hole (40), a movable groove (302) is formed in the sealing ring (301), a sealing gasket (303) is arranged inside the movable groove (302), an elastic part (304) is arranged on one side of the inner wall of the movable groove (302), one end of the elastic part (304) is connected with one side of the sealing gasket (303), and the inner surface of the sealing gasket (303) is attached to the surface of a piston rod (30).

6. A wear resistant high pressure compressor as set forth in claim 5, wherein: the elastic piece (304) is a spring or an elastic sheet, the outer side of the sealing gasket (303) is positioned in the movable groove (302) and arranged in a sliding mode, and the inner side of the sealing gasket (303) extends to the outer portion of the movable groove (302).

7. A wear resistant high pressure compressor as set forth in claim 1, wherein: the working method of the connecting assembly and the sealing assembly is as follows: the motor drives the crankshaft (20) to rotate in the shell (10), the crankshaft (20) drives the swash plate bearing (110) on the surface to rotate in the rotating process, then the swash plate bearing (110) drives the fluted disc (101) arranged on the surface to synchronously rotate, and through meshing transmission between the fluted disc (101) and the rack (102), the fluted disc (101) transmits axial piston force in the rotating process, so that the rack (102) drives the piston rod (30) to do reciprocating motion up and down in the shell (10); the balls (202) can be arranged in the rack (102), the surface of the fluted disc (101) is in contact with the surface of the balls (202), axial piston force is transferred by the fluted disc (101) in the rotating process, the rack (102) drives the piston rod (30) to reciprocate up and down in the shell (10), two ends of the surface of the piston rod (30) are respectively in sliding connection with the front guide ring (50) and the rear guide ring (70), the front guide ring (50) and the rear guide ring (70) are used for guiding the movement of the piston rod (30) to offset radial component force, atomized oil is blown into the shell (10) through the atomizing nozzle (80), the connection between the fluted disc (101) and the rack (102) is lubricated by the atomized oil, the abrasion degree between the fluted disc (101) and the rack (102) is reduced, and the sealing gasket (303) is abraded after being used for a period of time, at the moment, the elastic piece (304) pushes the sealing gasket (303) to the surface of the piston rod (30), the abrasion amount of the sealing gasket (303) is complemented, and the sealing of the sealing gasket (303) to the piston rod (30) is ensured.