CN108050064A - A kind of permanent-magnetic variable frequency screw air compressor machine - Google Patents

Abstract

The invention relates to the technical field of air compressors, and discloses a permanent magnet variable frequency screw air compressor, which includes a base and a body shell connected to the base, and is characterized in that: the body shell is provided with a compression host and a permanent magnet variable frequency power device , oil and gas separation device, air filter device and control device. When the air compressor is working, the oil and gas mixture generated enters the oil and gas separation device, and is separated under the action of the oil and gas's own gravity. At the same time, the oil and gas containing metal impurities are collected in the oil and gas separation device. The bottom of the device, so as to prevent impurities from accumulating in the oil filter. Since there is a large amount of oil at the bottom of the oil-gas separation device, the impurities will not cause fire or explosion hazards under the immersion of the oil. Compared with In terms of the existing maintenance cycle, the air compressor of this equipment can greatly reduce the maintenance cycle of the oil-gas separation device, so as to ensure normal production in an orderly manner.

Description

A permanent magnet variable frequency screw air compressor

technical field

The invention relates to the technical field of air compressors, in particular to a permanent magnet variable frequency screw air compressor.

Background technique

Air compressor is also known as air compressor. Air compressor is a kind of equipment used to compress gas. The existing air compressor mainly includes oil circulation system, air circuit circulation system, power distribution system, control system, etc., especially When working, the compressed air always forms a mixed gas of oil and gas, and a separator is required to separate the oil and gas. The existing separator is prone to fire and even explosion accidents during use. Therefore, the existing The air compressor always needs to clean and maintain the separator in time. In view of this, the inventor has made improvements.

Contents of the invention

The purpose of the present invention is to address the deficiencies of the prior art and provide a permanent magnet variable frequency screw air compressor. This air compressor can greatly reduce the maintenance cycle, and can avoid the occurrence of fire and explosion accidents, making production work safer .

In order to achieve the above object, a permanent magnet variable frequency screw air compressor of the present invention includes a base and a body shell connected to the base, the body shell is provided with a compression host, a permanent magnet variable frequency power unit, an oil-gas separation device, an air filter Device and control device, the permanent magnet frequency conversion power device drives the compressor host, one end of the compressor host is connected to a first air intake pipe, the first air intake pipe is connected to an air filter device, and the other end of the compressor host is connected to a The first air outlet pipe, the first air outlet pipe is connected with the oil-gas separation device, and the bottom of the air-separation device is connected with an oil return pipe, and the oil return pipe is connected with the compressor main engine, and the body shell is provided with an air filter corresponding to the air filter device. The low-noise air inlet, the control device is embedded in the shell of the body, and the compressor host, permanent magnet frequency conversion power device, oil-gas separation device and air filter device are all electrically connected to the control device.

Further, the compression main engine includes a casing, and a first compression screw and a second compression screw are arranged in the casing, and the first compression screw and the second compression screw are both provided with transmission gears that mesh with each other.

Preferably, the air filter device includes a connection bucket, one end of the connection bucket is provided with an air outlet joint connected to the first air intake pipe, the side wall of the connection bucket is provided with a first air intake joint, and the inside of the connection bucket An air filter for filtering air is provided, and the other end of the connecting barrel is provided with a detachable end cover, and the end cover elastically abuts against the air filter and buckles with the outer wall of the connecting barrel.

Furthermore, the air inlet joint is provided with an extended bellows, and the air filter is a nano filter material.

Further, the oil-gas separation device includes an oil-gas barrel and a barrel cover arranged on the upper end of the oil-gas barrel, the upper part of the oil-gas barrel is provided with a second air inlet joint, and the second air inlet joint is tangent to the inner wall of the oil-gas barrel, The inner upper part of the oil and gas barrel is provided with a separation plate, and the separation plate is provided with a plurality of filter holes. The bottom of the oil and gas barrel is an oil storage area, and the oil storage area is provided with a recovery magnetic assembly for absorbing impurities. A spiral oil filter is arranged above the separation plate, an oil outlet connector is arranged in the oil storage area, and the oil return pipe is connected with the oil outlet connector.

Preferably, the output port of the second air inlet joint is connected with a helix, and the helix extends along the inner wall of the oil-gas barrel to the bottom.

Preferably, the separation plate is magnetic, and the magnetic strength of the separation plate is smaller than the magnetic strength of the recycling magnetic assembly.

Preferably, a freely rotatable tray is arranged above the separation plate, and the oil filter is arranged on the tray.

Further, the low-noise air inlet includes a first side plate and a second side plate, there is a spaced air duct between the first side plate and the second side plate, and a louver inlet is opened on the first side plate, The lower side of the louver entrance is provided with a first glass fiber sponge, the second side plate is provided with a second glass fiber sponge corresponding to the louver entrance, and an air outlet is provided below the second glass fiber sponge.

Further, the base is provided with at least two forklift holes, and the sides of the forklift holes are provided with chute, and the chute is slidably provided with a slide plate for closing the forklift holes.

Beneficial effects of the present invention: a permanent magnet frequency conversion screw air compressor. When the air compressor is working, the oil-gas mixture generated enters the oil-gas separation device, and is separated under the action of the oil-gas self gravity, and the oil-gas containing metal impurities is separated at the same time. Collected to the bottom of the oil-gas separation device, so as to avoid impurities from accumulating in the oil filter. Since there is a large amount of oil at the bottom of the oil-gas separation device, the impurities will not cause fire or explosion under the immersion of the oil Hidden dangers, compared with the existing maintenance cycle, the air compressor of this equipment can greatly reduce the maintenance cycle of the oil-gas separation device, so as to ensure normal production in an orderly manner.

Description of drawings

Fig. 1 is a schematic diagram of the assembly structure of the present invention.

Fig. 2 is a sectional view of the present invention.

Fig. 3 is a schematic structural diagram of the compression host of the present invention.

Figure 4 is a side view of the present invention.

Fig. 5 is a structural schematic diagram of the oil-gas separation device of the present invention.

FIG. 6 is an enlarged view of part A of FIG. 5 .

Fig. 7 is a schematic structural view of the air filter device of the present invention.

Fig. 8 is a schematic structural diagram of the low-noise air inlet of the present invention.

Reference signs include:

Base--1, forklift hole--11, slide plate--12, body shell--2, compressor host--3, first air intake pipe--31, first air outlet pipe--32, oil return pipe--33, The first compression screw--34, the second compression screw--35, the transmission gear--36, the permanent magnet frequency conversion power unit--4, the oil-gas separation device--5, the oil-gas barrel--51, the barrel cover--52, The second air intake joint--53, separation plate--54, filter hole--541, oil storage area--55, recovery magnetic assembly--56, oil filter--57, oil outlet joint--58, Helix--591, Tray--592, Air Filter--6, Connection Barrel--61, Air Outlet Joint--62, First Air Intake Joint--63, Air Filter--64, End Cap-- -65, extension bellows--66, first side plate--71, second side plate--72, louver inlet--73, first glass fiber sponge--74, second glass fiber sponge--75, Air outlet - 76.

Detailed ways

The present invention will be described in detail below in conjunction with accompanying drawings 1 to 8 .

A permanent magnet frequency conversion screw air compressor of the present invention comprises a base 1 and a body shell 2 connected to the base 1, the body shell 2 is provided with a compression host 3, a permanent magnet frequency conversion power unit 4, an oil-gas separation device 5, The air filter device 6 and the control device, the permanent magnet frequency conversion power unit 4 drives the compressor host 3, and one end of the compressor host 3 is connected with a first air intake pipe 31, and the first air intake pipe 31 is connected with the air filter device 6, The other end of the main compressor 3 is connected with a first air outlet pipe 32, and the first air outlet pipe 32 is connected with the oil-gas separation device 5, and the bottom of the air-separation device is connected with an oil return pipe 33, and the oil return pipe 33 is connected with the oil-gas separation device 5. The main compressor 3 is connected, and the body casing 2 is provided with a low-noise air inlet corresponding to the air filter device 6. The control device is embedded in the body casing 2. Both the separation device 5 and the air filter device 6 are electrically connected to the control device. The working principle of this air compressor is: the permanent magnet variable frequency power unit 4 is a permanent magnet variable frequency motor that adjusts the number of revolutions according to the required air volume, thereby controlling the compressor host 3 to perform air compression. After being compressed by the air compressor host, the oil-air mixture produced enters the After the oil and gas separation device 5, the oil and gas are separated under the action of their own gravity, and at the same time, the oil and gas containing metal impurities are collected at the bottom of the oil and gas separation device 5, thereby preventing impurities from accumulating in the oil filter 57, because the bottom of the oil and gas separation device 5 There is a large amount of oil, so the impurities will not cause fire or explosion hazards under the immersion of the oil. Compared with the existing maintenance cycle, the maintenance cycle of the air compressor of this equipment for the oil-gas separation device 5 It can be greatly reduced to ensure normal production in an orderly manner.

Further, the main compressor 3 includes a casing, and a first compression screw 34 and a second compression screw 35 are arranged inside the casing, and the first compression screw 34 and the second compression screw 35 are both provided with mutually meshing transmission gear36. Through continuous optimization of the twin-screw main engine, the compression ratio is reasonably distributed by the first compression screw 34 and the second compression screw 35. The two-stage compression reduces the single-machine compression ratio, reduces internal leakage, improves volumetric efficiency, reduces bearing load, and improves the compression of the main engine 3. service life.

In this technical solution, the air filter device 6 includes a connecting bucket 61, one end of the connecting bucket 61 is provided with an air outlet joint 62 connected with the first air inlet pipe 31, and the side wall of the connecting bucket 61 is provided with a first Air intake joint 63, the air filter 64 for filtering air is arranged in the connecting barrel 61, and the other end of the connecting barrel 61 is provided with a detachable end cover 65, and the end cover 65 is connected with the air filter 64 is elastically abutted and fastened with the outer wall of the connecting barrel 61 . The air filter 64 comprises a bottom plate and a top plate, and a filter core is arranged between the bottom plate and the top plate, and the filter core is wave-shaped, and the filter core includes a first layer of filter paper, a second filter paper and a third support net that are stacked in sequence, and the first One layer of filter paper, the second filter paper and the third support net are stacked, and then waved and rolled into rolls and fixed between the bottom plate and the top plate. This air filter 64 can be better adapted to the filtration of air, and the filtration efficiency is much higher than that of traditional bone filters.

Of course, in order to better match the air intake with the body shell 2, the air intake joint is provided with an extended bellows 66 so that the extended bellows 66 is close to the low-noise air intake. This extended bellows 66 is a stretchable soft The air filter 64 can also be preferably a nano-filter material.

In this technical solution, the oil-gas separation device 5 includes an oil-gas barrel 51 and a barrel cover 52 arranged on the upper end of the oil-gas barrel 51. The upper part of the oil-gas barrel 51 is provided with a second air inlet joint 53, and the second air inlet The joint 53 is tangent to the inner wall of the oil-gas barrel 51, and the inner upper part of the oil-gas barrel 51 is provided with a separation plate 54, and the separation plate 54 is provided with a plurality of filter holes 541, and the bottom of the oil-gas barrel 51 is an oil storage area 55, The oil storage area 55 is provided with a recovery magnetic assembly 56 for absorbing impurities, a spiral oil filter 57 is provided above the separation plate 54, an oil outlet joint 58 is provided at the oil storage area 55, and the return The oil pipe 33 is connected with the oil outlet joint 58 . In this oil-gas separation device 5, after the oil-gas mixture enters the oil-gas barrel 51 from the second air intake joint 53, the oil-gas mixture contacts the inner wall of the oil-gas barrel 51 along the tangential direction, and most of the oil is adsorbed by the inner wall, and the adsorbed oil Under the action of its own gravity, the liquid gathers downward to the oil storage area 55, and the compressed gas containing part of the oil will contact the separation plate 54. The separation plate 54 has a filter hole 541, and the filter hole 541 allows the compressed gas to pass through on the one hand. On the other hand, part of the oil (possibly containing impurities) can be prevented from passing through the separation plate 54 to the greatest extent, and the recovery magnetic assembly 56 utilizes magnetic adsorption to adsorb the impurities in the oil-gas mixture to prevent the impurities from being in a free state.

In order to further improve the efficiency of oil-gas separation, the output port of the second air inlet joint 53 is connected with a helix 591 , and the helix 591 extends along the inner wall of the oil-gas barrel 51 to the bottom. In this way, the oil-air mixture can be separated along the helix 591 after coming out of the output port of the second air inlet joint 53. At the bottom, of course, this helical wire 591 is preferably made of steel, iron or copper wire.

Although after passing through the separation plate 54, the compressed gas still contains some grease particles, and the grease particles contain metal wear particles. Therefore, in order to better reduce the metal impurities attached to the surface of the oil filter 57, the separation plate 54 is magnetic. And the magnetic strength of the separation plate 54 is smaller than the magnetic strength of the recovery magnetic assembly 56 . The separation plate 54 has magnetism and will absorb the metal impurities attached to the surface of the oil filter 57, and since the magnetic strength of the recovery magnetic assembly 56 is greater than that of the separation plate 54, the metal impurities adsorbed on the separation plate 54 will With the affinity of grease, it is further gathered at the bottom of the oil and gas barrel 51, and finally the surface of the oil filter 57 has been cleaned to prolong the service life.

In this technical solution, a freely rotatable tray 592 is arranged above the separation plate 54 , and the oil filter 57 is arranged on the tray 592 . The oil filter 57 is arranged on the tray 592 that can rotate freely. During operation, under the flow of compressed gas, the oil filter 57 and the tray 592 rotate, and the metal impurities adsorbed on the surface of the oil filter 57 will Under the action, the oil liquid is dispersed on the inner wall of the oil-gas barrel 51 , then flows downward and gathers at the separation plate 54 , and finally converges at the bottom of the oil-gas barrel 51 .

In order to further reduce the working noise of the air compressor, the low-noise air inlet includes a first side plate 71 and a second side plate 72, and there is a spaced air duct between the first side plate 71 and the second side plate 72 , the first side plate 71 is provided with a louver inlet 73, the lower side of the louver inlet 73 is provided with a first glass fiber sponge 74, and the second side plate 72 is provided with a second glass fiber sponge corresponding to the louver inlet 73. The sponge 75, the second glass fiber sponge 75 is provided with an air outlet 76 below. Under the action of the louver inlet 73, the gas is sucked from the louver inlet 73, and the first glass fiber sponge 74 can not only block the air flow, but also prevent rainwater from being adsorbed and then enter the louver inlet 73. At the same time, the louver inlet 73 is inclined downward , therefore, can also prevent the inflow of rainwater. After the gas enters from the louver inlet 73, it flows downward under the obstruction of the second glass fiber sponge 75, and then enters from the air outlet 76. The whole process forms a Z-shaped air duct, so that the first glass fiber sponge 74 and the second Glass fiber sponge 75 absorbs sound and reduces wind noise.

In this technical solution, the base 1 is provided with at least two forklift holes 11 , and a sliding groove is arranged on the side of the forklift hole 11 , and a slide plate 12 for closing the forklift hole 11 is slidably provided in the sliding groove. The two forklift holes 11 can conveniently utilize a forklift to transport and ship the equipment, and after the shipment is completed, the forklift holes 11 are closed by using the slide plate 12, so as to avoid noise generated by air intake during work.

The above content is only a preferred embodiment of the present invention. For those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation and application scope. limits.

Claims (10)

1. a kind of permanent-magnetic variable frequency screw air compressor machine, the body fuselage being connected including pedestal and with pedestal, it is characterised in that：The machine Compression host, permanent-magnetic variable-frequency power set, gas and oil separating plant, air filter and control device are provided in body case, Permanent-magnetic variable-frequency power set driving compression host, one end of the compression host are connected with the first air inlet pipe, and described first Air inlet pipe is connected with air filter, and the other end of the compression host is connected with the first air outlet pipe, first air outlet pipe It is connected with gas and oil separating plant, the bottom from air separation is connected with oil return pipe, and the oil return pipe connects with compression host Logical, the body fuselage is provided with low noise air inlet corresponding with air filter, and the control device is embedded at body Shell, the compression host, permanent-magnetic variable-frequency power set, gas and oil separating plant and air filter are electrical with control device Connection.

2. a kind of permanent-magnetic variable frequency screw air compressor machine according to claim 1, it is characterised in that：The compression host includes shell Body is provided with the first compression screw rod and the second compression screw rod, the first compression screw rod and the second compression screw rod in the housing It is both provided with intermeshing transmission gear.

3. a kind of permanent-magnetic variable frequency screw air compressor machine according to claim 2, it is characterised in that：The air filter bag Connection bucket is included, described connection bucket one end is provided with the air outlet adapter being connected with the first air inlet pipe, and the side wall of the connection bucket is set The first inlet suction port is equipped with, the air cleaner for crossing air filtering, the other end of the connection bucket are provided in the connection bucket Detachable end is provided with, the end cap is abutted with air cleaner elasticity and the outer wall snapping with being connected bucket.

4. a kind of permanent-magnetic variable frequency screw air compressor machine according to claim 3, it is characterised in that：The inlet suction port is provided with Extend bellows, the air cleaner is nano filter medium.

5. a kind of permanent-magnetic variable frequency screw air compressor machine according to claim 1, it is characterised in that：The gas and oil separating plant bag It including barrel of oil and gas and is arranged at the bung of barrel of oil and gas upper end, the top of the barrel of oil and gas is provided with the second inlet suction port, and described second Inlet suction port and the inner wall of barrel of oil and gas are tangent, and the inside upper part of the barrel of oil and gas sets separating plate, and the separating plate is provided with more A filter opening, the bottom of the barrel of oil and gas is reserve, and the reserve is provided with the recycling magnet assembly for adsorbing contaminant, institute State and spiral type oil filter be provided with above separating plate, the reserve is provided with delivery connection, the oil return pipe with it is fuel-displaced Connector connects.

6. a kind of permanent-magnetic variable frequency screw air compressor machine according to claim 5, it is characterised in that：Second inlet suction port Delivery outlet is connected with helix, and the helix extends to bottom along the inner wall of barrel of oil and gas.

7. a kind of permanent-magnetic variable frequency screw air compressor machine according to claim 5, it is characterised in that：The separating plate has magnetic Property, and the magnetic intensity of the separating plate is less than the magnetic intensity of the recycling magnet assembly.

8. a kind of permanent-magnetic variable frequency screw air compressor machine according to claim 5, it is characterised in that：It is set above the separating plate There is rotatable pallet, the oil rectifier is set on pallet.

9. a kind of permanent-magnetic variable frequency screw air compressor machine according to claim 1, it is characterised in that：The low noise air inlet bag The first side plate and the second side plate are included, there is interval air passage between first side plate and the second side plate, first side plate opens up There is blinds entrance, the first glass sponge is provided on the downside of the blinds entrance, second side plate is provided with and blinds entrance Corresponding second glass sponge is provided with gas outlet below the second glass sponge.

10. according to a kind of permanent-magnetic variable frequency screw air compressor machine of claim 1~9 any one of them, it is characterised in that：The pedestal At least two forklift holes are provided with, the side side of the forklift hole is provided with sliding slot, and the sliding slot slip is provided with to close The slide plate of the forklift hole.