CN211370720U

CN211370720U - Roller compressor, pump and motor

Info

Publication number: CN211370720U
Application number: CN201920926631.4U
Authority: CN
Inventors: 刘忠臣
Original assignee: Dalian Qixiang Technology Co ltd
Current assignee: Dalian Qixiang Technology Co ltd
Priority date: 2019-03-13
Filing date: 2019-06-19
Publication date: 2020-08-28
Anticipated expiration: 2029-06-19

Abstract

The utility model relates to a mechanical engineering technical field provides a roller compressor and pump and motor, and its structural feature is: the interior cylinder face of casing and the outer cylinder face of cylinder are tangent mutually, both sides in the casing set up the end cover, set up the pivot in the shaft hole of end cover, pivot and the concentric setting of casing cylinder face, the eccentric journal of pivot and the concentric setting of the axle sleeve of cylinder, the one end of cylinder sets up the uncovered that link up, it imbeds the pendulum post to slide in uncovered, the parallel plane of the both sides of pendulum post and the uncovered sliding fit of cylinder, one side of pendulum post is the face of cylinder, it is identical with the face of cylinder recess that the casing internal surface set up, set up air inlet and exhaust hole on the casing. The utility model discloses but wide application in air compressor machine, natural gas compressor, air-blower, compressor, air source heat pump compressor, vacuum pump, oil transfer pump, pneumatic motor, hydraulic motor and engine etc..

Description

Roller compressor, pump and motor

Technical Field

The utility model belongs to the technical field of mechanical engineering, relate to engine and pump, relate to a varactor formula machine, like swing piston compressor and pump and motor, relate to hydraulic machine or hydraulic engine, wind motor, liquid varactor formula machinery, liquid or elastic fluid pump, fluid pressure actuating mechanism, general hydraulic technology and pneumatic technology, concretely relates to compressor and pump of conveying gas or liquid, especially air compressor, natural gas compressor, refrigeration compressor, heat pump compressor, vacuum pump, oil transfer pump, also can be used as pneumatic motor or hydraulic motor.

Background

At present, the compressors more commonly used are piston compressors, rolling rotor compressors, screw compressors and scroll compressors. The main drawbacks of the piston compressors are: the inertia force is large, the rotating speed is low, so the machine is heavy, especially when the displacement is large, and the vibration of the whole machine is large. The structure is complicated, the number of easily damaged parts is large, and the maintenance workload is large. The exhaust is discontinuous, the airflow pressure pulsates, the air column vibration is easy to generate, the noise is large, and the air-column vibration-isolating device can only be placed outdoors to isolate the noise. The main disadvantage of the rolling rotor compressor is that after the compression is finished, more residual gas exists between the sliding vane and the rotor, and the volumetric efficiency is low. The crescent lobe of the swing rotor compressor occupies large space, and the fixed connection manufacturability of the sliding vane and the rotor is poor. The main drawbacks of screw compressors are: complicated spiral curved surface processing difficulty, equipment input is big, and is with high costs, and production efficiency is low, and spiral curved surface profile accuracy is low, and sealing line area of contact is little, and sealing performance is poor, needs lubricating oil cooling and sealed, and exhaust system needs oil purifier, and auxiliary system is complicated. The scroll compressor needs a complex positioning system, the complex scroll curved surface is difficult to machine, the required equipment investment is large, the cost is high, and the production efficiency is low. After an inner double-layer working cavity and an outer double-layer working cavity which are formed by enclosing an inner ring sleeve, an outer ring sleeve and a roller of a concentric ring drum type compressor (ZL200610134630.3) researched and developed in the previous period are divided into 4 working cavities by a blocking column, 2 working cavities in an inner layer are divided into two rows of working cavities on the left and right by a supporting plate in the middle of the roller, and are actually divided into 3 expansion cavities and 3 compression cavities, 6 working chambers are formed, so that the structure is very complex, and the distribution structure of the 4 working cavities in the inner layer is difficult to arrange; the blind hole structure in the roller is difficult to process, the wall thickness of the roller must be equal, and a weak point is also formed during high-pressure work, so that the processing efficiency is low, the manufacturing cost is high, and the roller cannot be popularized after being placed for many years.

Disclosure of Invention

The utility model aims to overcome the weak point that exists in the above-mentioned technique, provide a drum compressor of novel structure. After research and development for over ten years, under the condition that hundreds of thought is not easy to understand, the maoxuton opens, breaks through the limitation of inherent thinking, removes an inner working cavity with poor manufacturability, solves the difficult problem of poor drum processing manufacturability disturbing for many years, ensures that the structure becomes extremely simple, is easy to manufacture, greatly reduces the cost, and has market competitive advantages.

Technical scheme

The utility model provides a technical scheme realize like this:

the utility model provides a rotary compressor and pump and motor, includes casing 1, end cover 2, pivot 3, cylinder 6,

pendulum post

4, and 1 both ends of casing set up end cover 2, and end cover 2 meets with pivot 3 through bearing 8, is equipped with inlet port 23 and exhaust hole 24 on casing 1 or the end cover 2, its characterized in that: the internal surface of casing 1 is the face of cylinder, the internal surface of face of cylinder sets up face of cylinder recess 5, the internal cylinder face of casing and the outer cylinder face of cylinder 6 are tangent mutually, pivot 3 sets up with the internal cylinder face of casing 1 is concentric, the eccentric journal 7 of pivot 3 and the endocentric axle sleeve 9 sliding connection of the outer cylinder face of cylinder 6, the one end of cylinder 6 sets up the uncovered 10 that link up, slide embedding pendulum post 4 in uncovered 10, the parallel plane and the parallel plane sliding fit in uncovered 10 both sides of pendulum post 4 both sides, a side surface of pendulum post 4 is face of cylinder 11, the face of cylinder 11 of pendulum post 4 is identical with the face of cylinder recess 5 of casing 1.

The drum comprises a drum 6 and is characterized in that a cylinder 13 is arranged outside the drum 6, a shaft sleeve 9 coaxial with the outer cylindrical surface of the cylinder 13 is arranged inside the drum 6, a supporting plate 14 is arranged between the cylinder 13 and the shaft sleeve 9, a through opening 10 is arranged on one side of the supporting plate 14 and one side of the cylinder 13, and planes on two sides of the opening 10 are parallel.

The drum 6 is provided with a protrusion or an extension rib 20 towards the inside of the drum 6 near the parallel planes at the two sides of the opening 10 of the drum 6.

Two ends of a cylinder 13 of the roller 6 or the side wall of the opening 10 are provided with a sealing groove 15, and a sealing ring 16 and a sealing strip 17 are arranged in the sealing groove 15.

The swing post 4 is a prism with one side surface being a cylindrical surface 11, two planes adjacent to the cylindrical surface 11 on the prism are parallel, the two ends of the swing post 4 are provided with positioning shafts 12, and the positioning shafts 12 are concentrically arranged with the cylindrical surface 11 of the swing post 4.

The end cover 2 is provided with a shaft hole 28, and the shaft hole 28 and the positioning shaft 12 are arranged concentrically.

The side of the end cover 2 is provided with a wear-resisting plate 16, the wear-resisting plate 16 is provided with a shaft hole 28, and a bearing 8 is arranged between the shaft hole 28 and the positioning shaft 12.

The inner surface of the shell 1 is provided with a cylinder sleeve 18, the inner surface of the cylinder sleeve 18 is a cylindrical surface, the inner cylindrical surface of the cylinder sleeve 18 is coaxial with the rotating shaft 3, and the inner cylindrical surface of the cylinder sleeve 18 is provided with a cylindrical surface groove 5.

The rotating shaft 3 is provided with a balance weight 19, and one side of the shaft neck of the balance weight 19 is provided with an eccentric balance weight.

The eccentric journal 7 and the balance weight 19 are a balance crankshaft 27 of an integrated structure, a shaft hole 28 is arranged at the central position of the balance crankshaft 27, the eccentric journal 7 and the shaft hole 28 are eccentrically arranged at two ends of the balance crankshaft 27, and the balance weight 19 is arranged at one side of the balance crankshaft 27.

And a one-way valve is arranged in the air inlet hole 23 or the air outlet hole 24.

Advantageous effects

The utility model has the advantages that:

1. simple structure and easy manufacture. Compared with a remote swing rotor compressor and a rolling rotor compressor, the structure is simplified by omitting sealing structures such as a swing rod or a slide block. Compared with the prior art ten years ago, the roller does not need to process the inner surface of the cylinder, but only needs to process the outer cylindrical surface, and the structure which is difficult to process in the roller is removed, so that the manufacture is easier, and the processing technology is good. The eccentric shaft neck is separated from the rotating shaft and then is integrated with the balance block, so that the manufacturing and processing of the eccentric shaft neck are easier, and the manufacturing cost is further reduced.

2. Small volume and light weight. The balance block can be arranged in the shell without occupying external space. And the sliding block or the rocker and other extending sealing structure components are not needed, all key components are arranged in the shell, the size is smaller, and the weight is lighter.

3. The cost performance is high. The roller and key parts have good processing manufacturability, the performance of the whole machine is excellent, and better performance can be achieved with lower cost.

4. Light vibration and low noise. Both the drum and the rotor assembly easily achieve high dynamic balance accuracy. The whole machine has slight vibration and low noise, and meets the requirement of environmental protection.

5. High volume efficiency, energy saving and environmental protection. The main parts are easy to manufacture, the sealing precision is easy to guarantee, the air tightness is high, the leakage is not easy, the amount of residual gas is reduced to the maximum extent after compression, the volume efficiency is high, and the energy is saved.

6. The life of the key structural member is long. The side face of the end cover is provided with a wear-resisting plate, and the inner wall of the casing is provided with a cylinder sleeve to play a wear-resisting role, so that the service life is prolonged. The relative sliding speed of the roller and the wear-resistant sheet is low, the wear is slow, and the service life is long.

Description of the drawings:

the present invention will now be further described with reference to the accompanying drawings and examples.

Fig. 1 is a schematic structural view of the roller compressor of the present invention.

Fig. 2 is a partial sectional view a-a of fig. 1.

Fig. 3 is a schematic perspective view of the drum of the present invention.

Fig. 4 is a schematic perspective view of the swing post of the present invention.

Fig. 5 is a schematic structural view of a reinforcing structure of the drum compressor of the present invention.

Fig. 6 is a partial sectional view B-B of fig. 5.

Fig. 7 is a schematic perspective view of the drum with seal groove according to the present invention.

Fig. 8 is a schematic perspective view of the swing post with the sealing groove of the present invention.

Fig. 9 is a schematic longitudinal sectional structure view of the combination of the roller compressor and the motor of the present invention.

Fig. 10 is a schematic cross-sectional view of the drum compressor according to the present invention.

Fig. 11 is a schematic perspective view of a balance crankshaft of the present invention.

In the figure, 1-a machine shell, 2-an end cover, 3-a rotating shaft, 4-a swing column, 5-a cylindrical surface groove, 6-a roller, 7-an eccentric shaft neck, 8-a bearing, 9-a roller shaft sleeve, 10-an opening of the roller, 11-a cylindrical surface of the swing column, 12-a positioning shaft, 13-a cylinder outside the roller, 14-a supporting plate of the roller, 15-a sealing groove, 16-a sealing ring, 17-a sealing strip, 18-a cylinder sleeve, 19-a balancing block, 20-an extending rib, 21-a bolt, 22-a positioning pin, 23-an air inlet hole, 24-an air outlet hole, 25-an abrasion-resistant plate, 26-a cylinder sleeve, 27-a balancing crankshaft, 28-an axle hole, 29-a motor shaft, 30-a threaded hole of the, 32-locking nut, 33-shaft seal, 34-transition end cover, 35-squirrel cage rotor, 36-motor stator, 37-motor outer end cover and 38-fan.

The specific implementation mode is as follows:

the first embodiment is as follows:

as shown in fig. 1 and 2, the roller compressor mainly comprises a casing 1, an end cover 2, a rotating shaft 3, a roller 6, a swing post 4 and a balance block 19, wherein the end cover is kept at a correct position with the casing 1 by a positioning pin 22 and is fixedly connected with the casing 1 by a bolt 21, a support can be arranged at the bottom of the end cover as required for supporting, and an air inlet 23 and an air outlet 24 are arranged on the casing 1 or the end cover 2. The inner surface of the machine shell 1 is a cylindrical surface, a cylindrical surface groove 5 is arranged on the inner surface of the cylindrical surface, the rotating shaft 3 and the inner cylindrical surface of the machine shell 1 are concentrically arranged, two ends of the rotating shaft are slidably supported in a bearing hole in the middle of the end cover 2 through a bearing 8, an eccentric journal 7 is arranged in the middle of the rotating shaft 3, the eccentric journal 7 is slidably connected with a shaft sleeve 9 concentric with the outer cylindrical surface of the roller 6, and the inner cylindrical surface of the machine shell 1 and the outer cylindrical surface of the. As shown in fig. 3, the outside of the drum 6 is a cylinder 13, the outer surface of the cylinder 13 is a cylindrical surface, a shaft sleeve 9 is arranged inside the drum 6, the inner hole of the shaft sleeve 9 is coaxially arranged with the outer cylindrical surface of the cylinder 13, a supporting disc 14 is arranged between the cylinder 13 and the shaft sleeve 9, one side of the supporting disc 14 and one side of the cylinder 13 are provided with a through opening 10, the two side planes of the opening 10 are parallel, and the opening 10 is embedded into the swing post 4 in a sliding manner. The side of the support plate 14 remote from the opening 10 is provided with a recess or through hole to achieve overall dynamic balance. As shown in fig. 4, the swing post 4 is a column, one side surface of the swing post is a cylindrical surface 11, two planes adjacent to the cylindrical surface 11 are parallel to each other, and the side surface opposite to the cylindrical surface 11 is a plane. The side surface opposite to the cylindrical surface 11 may also be a curved surface or a polygonal columnar surface. The distance of two parallel planes of pendulum post 4 equals with two parallel plane intervals of the uncovered 10 of cylinder 6, but the flexible slip in the uncovered 10 of pendulum post 4 embedding cylinder 6, the both ends of pendulum post 4 set up location axle 12, location axle 12 sets up with the face of cylinder 11 of pendulum post 4 one side is concentric, the corresponding position of end cover 2 sets up shaft hole 28, in the shaft hole 28 is gone into in the installation of the location axle 12 of pendulum post 4, pendulum post 4 can be in a flexible way around location axle 12 swing and keep the face of cylinder 11 of pendulum post 4 identical with the face of cylinder recess 5 of casing 1 internal surface.

The eccentric shaft journal 7 of the rotating shaft 3 is in sliding fit with the shaft sleeve 9 in the roller 6. The rotating shaft 3 can be provided with a flat key and a balance block 19, so that the rotating component formed by combining the roller 6 and the rotating shaft 3 achieves dynamic balance, and vibration and noise are reduced.

An air inlet 23 and an air outlet 24 are arranged on the top of the machine shell 1 and on two sides of the swing post 4, and are respectively communicated with a closed working cavity defined by the machine shell 1, the swing post 4, the roller 6 and the end cover 2.

The cylinder 13 of the roller 6 near the two ends of the opening 10 can extend inwards to form extending ribs 20, the thickness is locally increased, the sealing length is increased, the sealing is more reliable, and the structural strength is enhanced.

The rotating shaft 3 rotates, the eccentric shaft neck 7 of the rotating shaft 3 drives the shaft sleeve 9, the supporting disk 14 and the cylinder 13 of the roller 6 to swing around the swing column 4, a crescent cavity which is formed by the outer cylindrical surface of the roller 6, the inner cylindrical surface of the shell 1 and the end cover 2 in a surrounding mode is divided into two closed working cavities by the swing column 4, and along with the rotation of the rotating shaft 3, the volumes of the left working cavity and the right working cavity are continuously changed to form a positive displacement compressor, a pump and a motor. As shown in figure 1, the rotating shaft 3 rotates clockwise, a crescent right working cavity formed by the roller 6, the machine shell 1 and the end cover 2 is enlarged, gas or liquid enters the right working cavity from the air inlet hole 23, a crescent left working cavity formed by the roller 6, the machine shell 1 and the end cover 2 is reduced, and the gas or liquid is compressed and then discharged out of the left working cavity from the air outlet hole 24. The intake holes 23 and the exhaust holes 24 may be straight holes or inclined holes. A check valve may be further disposed in the exhaust hole 24 to prevent backflow of high pressure gas or liquid.

Example two:

as shown in fig. 5 and 6, the roller compressor mainly includes a casing 1, an end cover 2, a rotating shaft 3, a roller 6, a swing post 4, and a balance block 19, the end cover 2 is held at a correct position with the casing 1 by a positioning pin 22, and is fixedly connected by a bolt 21, a support can be arranged at the bottom for support, and an air inlet 23 and an air outlet 24 are arranged on the casing 1 or the end cover 2. The inner surface of the casing 1 is provided with a cylinder sleeve 18, the inner surface of the cylinder sleeve 18 is a cylindrical surface, the inner surface of the cylindrical surface is provided with a cylindrical surface groove 5, and for enhancing sealing, the side surface of the cylinder sleeve 18 is provided with a sealing groove 15 and a sealing ring 16 to seal the side surface. The inner cylindrical surface of the machine shell 1 is internally tangent with the outer cylindrical surface of the roller 6, the rotating shaft 3 and the inner cylindrical surface of the cylinder sleeve 18 are concentrically arranged, the middle part of the rotating shaft 3 is provided with an eccentric journal 7, and the eccentric journal 7 is connected with a shaft sleeve 9 which is concentric with the outer cylindrical surface of the roller 6 in a sliding way through a bearing 8.

As shown in fig. 7, the outside of the drum 6 is a cylinder 13, the outer surface of the cylinder 13 is a cylindrical surface, a shaft sleeve 9 is arranged inside the drum 6, the inner hole of the shaft sleeve 9 is coaxially arranged with the outer cylindrical surface of the cylinder 13, a supporting disc 14 is arranged between the cylinder 13 and the shaft sleeve 9, a through opening 10 is arranged on one side of the supporting disc 14 and one side of the cylinder 13, the two side planes of the opening 10 are parallel, and the opening 10 is embedded into the swing post 4 in a sliding manner. The side of the support disc 14 remote from the opening 10 is provided with a recess or through hole. Two ends of a cylinder 13 of the roller 6 are provided with a sealing groove 15, and a sealing ring 16 is arranged in the sealing groove 15 to seal two sides of the roller 6. The side surface of the opening 10 of the roller 6 is also provided with a sealing groove 15, and a sealing strip 17 is arranged in the sealing groove 15 and seals two sides of the swing post 4. The cylinder 13 of the roller 6 near the two ends of the opening 10 can extend inwards, and the thickness is gradually increased towards the two ends by adopting circular arc transition, so that the structural strength is enhanced, the pressure resistance is improved, the width of the sealing surface is also increased, and the sealing is tighter.

As shown in fig. 8, the swing post 4 is a column, one side surface of which is a cylindrical surface 11, two planes adjacent to the cylindrical surface 11 are parallel to each other, and the side surface opposite to the cylindrical surface 11 is a plane. The side opposite to the cylindrical surface 11 may also be curved or polygonal or other shape. The distance between the two parallel planes of the swing post 4 is equal to the distance between the two parallel planes of the opening 10 of the roller 6, and the swing post 4 can be flexibly embedded into the opening 10 of the roller 6 to slide. The small faces at the two ends of the swing post 4 are planes. The two end planes of the swing post 4 are provided with shaft holes 28, and the shaft holes 28 are concentrically arranged with the cylindrical surface 11 at one side of the swing post 4. The corresponding position of the end cover 2 is provided with a shaft hole 28, a bearing 8 is arranged in the shaft hole 28, the positioning shaft 12 can be inserted into the shaft hole 28 of the swing post 4, the positioning shaft 12 is in sliding connection with the bearing 8 in the shaft hole 28 of the end cover 2, the swing post 4 can flexibly swing around the positioning shaft 12, and the cylindrical surface 11 of the swing post 4 is kept to be matched with the cylindrical surface groove 5 on the inner surface of the machine shell 1. The cylindrical surface of the swing post 4 is provided with a sealing groove 15, and a sealing strip 17 is arranged in the sealing groove 15 and seals the cylindrical surface 11 of the swing post 4 and the cylindrical surface groove 5 on the inner surface of the machine shell 1.

An eccentric shaft neck 7 in the middle of the rotating shaft 3 is in sliding connection with a shaft sleeve 9 in the roller 6, and a balance block 19 is arranged on the rotating shaft 3, so that a rotating assembly formed by combining the roller 6 and the rotating shaft 3 achieves dynamic balance.

The side face of the end cover 2 is provided with a wear-resisting plate 25, so that the wear resistance is improved, and the wear-resisting plate 25 forms a seal with the cylinder sleeve 18 and the end face of the roller 6. The cylinder sleeve 18 and the wear-resisting plate 25 can be made of wear-resisting materials, and the service life is prolonged.

An air inlet 23 and an air outlet 24 are arranged on the top of the machine shell 1 and on two sides of the swing post 4, and are respectively communicated with a closed working chamber enclosed among the machine shell 1, the swing post 4, the roller 6 and the wear-resisting plate 25 or the end cover 2.

The rotating shaft 3 rotates, the eccentric shaft neck 7 of the rotating shaft 3 drives the shaft sleeve 9 of the roller 6, the supporting plate 14 and the cylinder 13 to roll along the inner cylindrical surface of the cylinder sleeve 18, the outer cylindrical surface of the roller 6, the inner cylindrical surface of the cylinder sleeve 18 and the wear-resisting plate 25 on the surface of the end cover 2 form a crescent cavity, the crescent cavity is divided into two closed working cavities by the swing post 4, and along with the rotation of the rotating shaft 3, the volumes of the left working cavity and the right working cavity are continuously changed to form a positive displacement compressor, a pump and a motor. As shown in fig. 5, the rotating shaft 3 rotates counterclockwise, a crescent left working chamber surrounded by the roller 6, the cylinder sleeve 18 and the wear-resistant plate 25 on the surface of the end cover 2 becomes large, gas enters the left working chamber from the air inlet 23, a crescent right working chamber surrounded by the roller 6, the cylinder sleeve 18 and the wear-resistant plate 25 on the surface of the end cover 2 becomes small, and the gas is compressed and then discharged from the air outlet 24 to the right working chamber. A check valve can be arranged in the exhaust hole 24 to prevent high-pressure gas from flowing backwards.

Example three:

the typical application of the present invention is illustrated by an air compressor. As shown in fig. 9 and 10, the drum compressor is combined with a motor to form an air compressor. The left part is a roller compressor, and the right part is a motor. The roller compressor mainly comprises a machine shell 1, an end cover 2, a balance crankshaft 27, a roller 6 and a swing post 4, wherein radiating fins are arranged on the end cover 2 and the machine shell 1, the end cover 2 is fixedly connected with the machine shell 1 through a bolt 21, and an air inlet 23 and an air outlet 24 are arranged on the machine shell 1. The inner surface of the machine shell 1 is provided with a cylindrical surface groove 5, and a sealing groove 15 and a sealing ring 16 are arranged between the machine shell 1 and the end cover 2 to seal a joint surface. The inner cylindrical surface of casing 1 and the outer cylindrical surface of cylinder 6 inscribe mutually, and motor shaft 29 and the concentric setting of casing 1 inner cylindrical surface, motor shaft 29 cup joint balanced bent axle 27, and one side middle part of balanced bent axle 27 is shaft hole 28, and one side of shaft hole 28 sets up screw hole 30, can set up jackscrew 31 in the screw hole 30 and fasten to lock the one end at motor shaft 29 by lock nut 32. The other side of the balance crankshaft 27 is eccentrically provided with the eccentric journal 7 with the shaft hole 28, and the side of the balance crankshaft 27 far away from the eccentric journal 7 is provided with the balance weight 19. The eccentric journal 7 is connected with a shaft sleeve 9 concentric with the outer cylindrical surface of the roller 6 in a sliding way through a needle bearing 8. One side of cylinder 6 sets up the uncovered 10 that link up, the both sides plane of uncovered 10 is parallel, slide embedding pendulum post 4 in uncovered 10, the inside round hole 28 that sets up of pendulum post 4, the round hole 28 of pendulum post 4 sets up with the face of cylinder 11 of pendulum post 4 is coaxial, installation location axle 12 in the round hole 28 of pendulum post 4, location axle 12 packs into in the shaft hole 28 of end cover 2, pendulum post 4 can be nimble around the axial lead swing of location axle 12, and keep the face of cylinder 11 of pendulum post 4 and the face of cylinder recess 5 of casing 1 internal surface identical. A sealing groove 15 is arranged in the cylindrical surface 11 of the swing post 4, and a sealing strip 17 is arranged to seal the cylindrical surface 11 of the swing post 4 and the cylindrical surface groove 5. The center of the motor is a motor rotating shaft 29, the outer part of the motor rotating shaft 29 is sleeved on a squirrel cage rotor 35, an armature and a stator 36 are concentrically arranged outside the squirrel cage rotor 35, bearings 8 are arranged at two ends of the motor rotating shaft 29 and the squirrel cage rotor 35 and are supported by end covers 37 and transition end covers 34 at the two ends, and the motor is fixedly connected with the roller compressor by the transition end covers 34. The end of the motor shaft 29 is also connected with a fan 38, and the motor and the roller compressor are cooled by air through an external wind scooper. A check valve is arranged in the exhaust hole 24 to prevent high-pressure gas from flowing backwards. The air inlet holes 23 are not provided with a check valve and do not flow backwards. Peripheral accessory equipment such as the gas storage tank and the pipeline are not described in detail.

As shown in fig. 11, a shaft hole 28 is provided at a central position of the balance crankshaft 27 so as to be fixedly connected to a motor shaft 29. The eccentric shaft journal 7 and the round hole 28 are eccentrically arranged at two ends of the balance crankshaft 27, the axial leads of the eccentric shaft journal 7 and the round hole 28 are parallel to each other, and a balance block 19 is further arranged on one side of the balance crankshaft 27 far away from the eccentric shaft journal 7. A threaded hole 30 is formed in one side of the shaft hole 28, and a jackscrew can be arranged in the threaded hole 30 for fastening.

The electric rotating shaft 29 is dragged by a squirrel cage rotor 35, an external armature and a stator 36 to rotate, a balance crankshaft 27 of the roller compressor is driven to rotate, an eccentric shaft neck 7 of the balance crankshaft 27 drives a shaft sleeve 9 of the roller 6, a supporting disk 14 and a cylinder 13 to roll along the inner cylindrical surface of the shell 1, the outer cylindrical surface of the roller 6, the inner cylindrical surface of the shell 1 and the surface of the end cover 2 form a crescent cavity, the crescent cavity is divided into two closed working cavities by a swinging column 4, the gradually-enlarged working cavities suck air through air inlets 23, and the gradually-reduced working cavities push compressed air into an air storage tank after opening check valves at exhaust holes 24.

Industrial applicability: when the working medium is air, the utility model relates to an air compressor. When the conveying medium is the natural gas, the utility model relates to a natural gas compressor. When the working medium is changed into liquid such as water or oil from gas, the utility model can be used as a water pump or an oil pump for industrial and chemical industries. When high-pressure gas or liquid are used as driving working medium, the utility model can be used as a variable-capacity pneumatic motor or a hydraulic motor and an engine. When the working medium is the refrigerant the utility model discloses then become compressor, like refrigerator compressor, freezer compressor, air condition compressor, vehicle air conditioner compressor. The utility model discloses can also be used as vacuum pump and vacuum unit for trades such as scientific research, medical treatment, papermaking, weaving, food, traffic.

The utility model discloses an each spare part also can adopt the components of a whole that can function independently structure, like aforementioned pendulum post 4 changes the location axle construction that passes the center of pendulum post 4 with the whole of location axle 12 into.

A sealing groove 15 can be arranged in the cylindrical surface groove 5 on the inner surface of the machine shell 1, and a sealing strip 17 is arranged in the sealing groove 15.

An air inlet 23 is arranged at the inflow end of a surrounded working cavity of the machine shell 1 or the cylinder sleeve 18 and the end cover 2, an air filter is arranged in the air inlet 23, and an air outlet 24 is arranged at the outflow end of the surrounded working cavity.

As a vacuum pump, a pneumatic motor or a hydraulic motor, a check valve is provided in the air inlet 23 to prevent the reverse flow of gas or liquid.

The one-way valve is a plate-shaped or slice-shaped exhaust valve plate which is attached to the exhaust hole. When the check valve is plate-shaped, the bottom of the check valve is also provided with a cone or a long-strip inclined plane body with an inclined plane groove, and the cone or the long-strip inclined plane body is pressed and sealed against the air inlet and outlet hole. The one-way valve can also be provided with a spring and a mandrel.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can substitute or change the technical solution and the inventive concept of the present invention within the technical scope of the present invention.

Claims

1. The utility model provides a roller compressor, includes casing (1), end cover (2), pivot (3), cylinder (6), pendulum post (4), and casing (1) both ends set up end cover (2), and end cover (2) meet through bearing (8) and pivot (3), set up balancing piece (19) on pivot (3), are equipped with inlet port (23) and exhaust hole (24) on casing (1) or end cover (2), its characterized in that: the inner surface of the machine shell (1) is a cylindrical surface, the inner surface of the cylindrical surface is provided with a cylindrical surface groove (5), the inner cylindrical surface of the machine shell is internally tangent to the outer cylindrical surface of the roller (6), the rotating shaft (3) and the inner cylindrical surface of the machine shell (1) are concentrically arranged, an eccentric journal (7) of the rotating shaft (3) is in sliding connection with a shaft sleeve (9) which is concentric with the outer cylindrical surface of the roller (6), one end of the roller (6) is provided with a through opening (10), a bulge or an extending rib (20) is arranged near the parallel planes at the two sides of the opening (10) of the roller (6) to the inside of the roller (6), a swinging column (4) is embedded in the opening (10) in a sliding way, the parallel planes at the two sides of the swinging column (4) are in sliding fit with the parallel planes at the two sides of the opening (10), at least one side surface of the swinging column (4), a crescent cavity enclosed by the outer cylindrical surface of the roller (6), the inner cylindrical surface of the shell (1) and the end cover (2) is divided into two working cavities by the swing column (4).

2. The utility model provides a drum pump, includes casing (1), end cover (2), pivot (3), cylinder (6), pendulum post (4), and casing (1) both ends set up end cover (2), and end cover (2) meet through bearing (8) and pivot (3), set up balancing piece (19) on pivot (3), are equipped with inlet port (23) and exhaust hole (24) on casing (1) or end cover (2), its characterized in that: the inner surface of the machine shell (1) is a cylindrical surface, the inner surface of the cylindrical surface is provided with a cylindrical surface groove (5), the inner cylindrical surface of the machine shell is internally tangent to the outer cylindrical surface of the roller (6), the rotating shaft (3) and the inner cylindrical surface of the machine shell (1) are concentrically arranged, an eccentric journal (7) of the rotating shaft (3) is in sliding connection with a shaft sleeve (9) which is concentric with the outer cylindrical surface of the roller (6), one end of the roller (6) is provided with a through opening (10), a bulge or an extending rib (20) is arranged near the parallel planes at the two sides of the opening (10) of the roller (6) to the inside of the roller (6), a swinging column (4) is embedded in the opening (10) in a sliding way, the parallel planes at the two sides of the swinging column (4) are in sliding fit with the parallel planes at the two sides of the opening (10), at least one side surface of the swinging column (4), a crescent cavity enclosed by the outer cylindrical surface of the roller (6), the inner cylindrical surface of the shell (1) and the end cover (2) is divided into two working cavities by the swing column (4).

3. The utility model provides a drum motor, includes casing (1), end cover (2), pivot (3), cylinder (6), pendulum post (4), and casing (1) both ends set up end cover (2), and end cover (2) meet through bearing (8) and pivot (3), set up balancing piece (19) on pivot (3), are equipped with inlet port (23) and exhaust hole (24) on casing (1) or end cover (2), its characterized in that: the inner surface of the machine shell (1) is a cylindrical surface, the inner surface of the cylindrical surface is provided with a cylindrical surface groove (5), the inner cylindrical surface of the machine shell is internally tangent to the outer cylindrical surface of the roller (6), the rotating shaft (3) and the inner cylindrical surface of the machine shell (1) are concentrically arranged, an eccentric journal (7) of the rotating shaft (3) is in sliding connection with a shaft sleeve (9) which is concentric with the outer cylindrical surface of the roller (6), one end of the roller (6) is provided with a through opening (10), a bulge or an extending rib (20) is arranged near the parallel planes at the two sides of the opening (10) of the roller (6) to the inside of the roller (6), a swinging column (4) is embedded in the opening (10) in a sliding way, the parallel planes at the two sides of the swinging column (4) are in sliding fit with the parallel planes at the two sides of the opening (10), at least one side surface of the swinging column (4), a crescent cavity enclosed by the outer cylindrical surface of the roller (6), the inner cylindrical surface of the shell (1) and the end cover (2) is divided into two working cavities by the swing column (4).

4. The roller compressor or pump or motor according to claim 1 or 2 or 3, wherein: the outside of cylinder (6) is drum (13), and the inside of cylinder (6) sets up axle sleeve (9) coaxial with the outer face of cylinder (13) of cylinder, sets up supporting disk (14) between drum (13) and axle sleeve (9), and one side of supporting disk (14) and drum (13) sets up uncovered (10) that link up, and the both sides plane of uncovered (10) is parallel, and one side that uncovered (10) were kept away from to supporting disk (14) sets up sunkenly or the through-hole.

5. The roller compressor or pump or motor according to claim 1 or 2 or 3, wherein: the outer part of the cylinder (13) of the roller (6) is a cylindrical surface, and the inner part of the cylinder (13) of the roller (6) is close to the two ends of the opening (10) and extends inwards to increase the thickness.

6. The roller compressor or pump or motor according to claim 1 or 2 or 3, wherein: two ends of a cylinder (13) of the roller (6) or the side wall of the opening (10) are provided with sealing grooves (15), and sealing rings (16) and/or sealing strips (17) are arranged in the sealing grooves (15).

7. The roller compressor or pump or motor according to claim 1 or 2 or 3, wherein: the swing column (4) is a column with one side surface being a cylindrical surface (11), two planes adjacent to the cylindrical surface (11) on the swing column (4) are parallel, positioning shafts (12) are arranged at two ends and/or inside the swing column (4), and the positioning shafts (12) and the cylindrical surface (11) of the swing column (4) are arranged concentrically.

8. The roller compressor or pump or motor according to claim 1 or 2 or 3, wherein: the end cover (2) is provided with a shaft hole (28), and the shaft hole (28) and the positioning shaft (12) are arranged concentrically.

9. The roller compressor or pump or motor according to claim 1 or 2 or 3, wherein: the side of end cover (2) sets up antifriction plate (25), sets up shaft hole (28) on antifriction plate (25), sets up bearing (8) between shaft hole (28) and location axle (12).

10. The roller compressor or pump or motor according to claim 1 or 2 or 3, wherein: the inner surface of the casing (1) is provided with a cylinder sleeve (18), the inner surface of the cylinder sleeve (18) is a cylindrical surface, the inner cylindrical surface of the cylinder sleeve (18) is coaxial with the rotating shaft (3), and the inner cylindrical surface of the cylinder sleeve (18) is provided with a cylindrical surface groove (5).

11. The roller compressor or pump or motor according to claim 1 or 2 or 3, wherein: the rotating shaft (3) is provided with a balance block (19), and one side of the balance block (19) is provided with an eccentric balance weight.

12. The roller compressor or pump or motor according to claim 1 or 2 or 3, wherein: eccentric shaft neck (7) and balancing piece (19) balance shaft (27) of formula structure as an organic whole, the central point of balance shaft (27) puts and sets up shaft hole (28), eccentric shaft neck (7) and shaft hole (28) eccentric settings are at the both ends of balance shaft (27), one side of balance shaft (27) sets up balancing piece (19).