CN201297256Y

CN201297256Y - Self-lubricated composite vacuum pressure air pump

Info

Publication number: CN201297256Y
Application number: CNU2008200406867U
Authority: CN
Inventors: 吴新生; 杨永坚
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-07-24
Filing date: 2008-07-24
Publication date: 2009-08-26
Anticipated expiration: 2018-07-24

Abstract

The utility model relates to the technical field of air-compressing-or-delivering machines capable of simultaneously pumping the air and outputting the compressed air, in particular to a self-lubricated composite vacuum pressure air pump, which comprises an electric motor and a pump head; wherein, a pump body is arranged inside the pump head; on the pump body, a cooling fan is arranged at a position close to the electric motor; a cooling part is arranged on the periphery of the cooling fan; an air guide sleeve is arranged between the pump body and an outer housing; a support is fixed on the bottom of the air pump; a front end cover is arranged on the front end of the pump body; a rear end cover is arranged on the rear end of the pump body; a front bearing support is assembled on the front end cover; a rear bearing support is assembled on the rear end cover; a front bearing is assembled on the front bearing support; a rear bearing is assembled on the rear bearing support; and a rotating shaft passes through the front and the rear bearings. The utility model resolves the following problems of the prior air pump: the heat dissipation of the compressed air is slow, the working plane cannot be adjusted, and the air turbulence can be easily generated.

Description

Self-lubricating vacuum pressure compound air pump

Technical field

The utility model relates to a kind of field of mechanical technique air-breathing and compressed-air actuated compression of output or conveying gas, especially a kind of self-lubricating vacuum pressure compound air pump of vacuumizing simultaneously.

Background technique

Existing and the matching used air pump of printing press mostly is the ZYB vacuum-pressure composite air pump greatly, because this air pump is high speed rotating when work, slide plate is done in rotor and is produced friction when radially sliding, produce a large amount of heats thus, temperature between slide plate and the rotor will soon be risen to more than 400 ℃, and slide plate and rotor are overheated, cause rotor, slide plate to damage simultaneously, even burn-down of electric motor, adopted oil lubrication device and cooling fan for the proper functioning that guarantees air pump; But after air pump works long hours, because cooling air has produced turbulent phenomenon between air pump outer cover and air pump pump head, cooling effect is not very good, thereby cause the air pump inside temperature still very high, make component such as bearing, slide plate be under the high temperature all the time, be subjected to having a strong impact on the average life of product, even can cause the integral body of air pump to be scrapped.Since with printing equipment supporting vacuum, pressure compound air pump all be operated in fast state, the direct friction of the slide plate and the pump housing, air be compressed and mechanical loss etc. all produces heat, the compressed air temperature that makes air pump discharge is higher, and the too high temperature of calming the anger can change the tension force of paper, make the paper embrittlement that hardens, thereby influence printing quality; Though older generation's air pump has adopted necessary cooling unit, because the cooling tube that this air pump disposed is contained in fuselage interior, moreover because the restriction in space, heat diffusion area is less relatively, and pressurized air can not get effective cooling.Existing and the matching used air pump of printing machinery mostly is ZYB greatly oily serial vacuum, pressure compound air pump, because this air pump exists the shortcoming of exhaust oil spout, having a strong impact on the quality of color printing, therefore progressively replaced by ZYBW oil-free vacuum, pressure compound air pump; The bearing at ZYB series air pump support rotor two ends directly is installed in the pump housing end covers at two sides, because air pump runs up for a long time and the compression of gas has produced a large amount of heats, because the conduction of heat, the very fast rising of the temperature of end cap, the also very fast thereupon rising of bearing temperature, finally reach thermal equilibrium (about 120 ℃), and the temperature rise of rolling bearing best effort should be below 95 ℃, if therefore bearing works long hours in the condition of high temperature, certainly will be with the wearing and tearing of aggravation bearing race, even produce peeling off of rolling element and raceway, cause the inefficacy of bearing the most at last and influence the normal use of air pump.ZYBW series vacuum, pressure compound air pump are indispensable parts of printing equipment, though installing and using, it has no special requirements, can directly place smooth ground, but when work, must keep its relative stablizing, otherwise cause the vibration of air pump and the increase of noise easily.Older generation's air pump is provided with 3 rubber footing, is anchored on respectively under the pump housing and the motor frame, because its distance of separation is near, working stability is relatively poor, and adjusts relatively difficulty.

Summary of the invention

The technical problems to be solved in the utility model is: slow at the pressurized gas heat radiation that existing air pump exists, working plane is unadjustable and easily produce the problem of turbulence, has developed a kind of self-lubricating vacuum pressure compound air pump.

The technological scheme that its technical problem that solves the utility model adopts is: a kind of exhaust elbow that is connected with on the pump housing, the exhaust elbow connects an end of cooling-part again, airduct is arranged at the top at exhaust chamber, airduct is connected on the cooling-part, cooling-part is installed in pump housing outside, cover the fan top, between the pump housing and outer cover, air guide sleeve is arranged, be fixed with support in the bottom of air pump.

Pump head described in the utility model has front-end bearing pedestal and rear bearing block, front-end bearing pedestal is installed on the front cover, front cover and rear end cover are fixed on the two ends of the pump housing, rear bearing block is installed on rear end cover, on the antero posterior axis bearing bearing is installed, rotatingshaft passes through front and back bearings, preceding thermal-protective coating is arranged between front-end bearing pedestal described in the utility model and the front cover, preceding thermal-protective coating is arranged between rear bearing block and the rear end cover, and thermal-protective coating can better stop end cap to conduct heat to bearing, adopts split-type structural.Promptly end cap and Bearing Installation position are separated, Bearing Installation is in aluminium matter bearing support, bearing support links to each other with left and right sides end cap by certain mode again, because bearing is away from thermal source, moreover the thermal diffusivity of the aluminium bearing seat of special construction than cast iron for well, therefore guaranteed that bearing can be operated within the suitable temperature range, improved the working life of bearing, thereby improved the time between failures of air pump.

The cylindrical of the outside of the pump housing described in the utility model, the cylindrical of front-end bearing pedestal, rear bearing block has radiating fin, can increase heat diffusion area effectively and reach radiating effect.

Air guide sleeve described in the utility model is that end face is oblate column structure, and an end and body end form the rear bearing block formation of the pump housing and seal, and avoid intake trubulence.

The beneficial effects of the utility model are, cool air can be along flowing in the space that the pump housing and air guide sleeve surrounded in the utility model, solved the phenomenon of turbulence, moreover the pump housing is provided with radiating fin, make the pump housing obtain better cooling, solve the too high phenomenon of air pump temperature, improved life of product.Such support has not only increased the relative distance between 4 footing, makes the air pump to be convenient to held stationary in the course of the work, and is convenient to adjust the footing height, keeps the level of air pump and installs, thereby reach the purpose of damping noise reduction.And this structure makes two bearings away from heating source, a lot of radiating fin have been designed owing to the different of bearing support material with at bearing support cylindrical place, make the heat of bearing also obtain well distributing, effectively reduced the operating temperature of bearing, improved the working life of product; Pump housing inwall, the space that adjacent slide plate in rotor outer surface and the radial groove is formed is circularly to exhaust elbow discharge air after compression, pressurized air is flowed through and is entered the suction and discharge chamber behind the cooling tube parts, again through with the suction air chamber on airduct link to each other with printing equipment, provide pressurized air to printing equipment endlessly, because the cooling tube parts directly are installed on around the air pump fan, there is not any obstacle, and every cooling tube is relatively grown (reaching 1080mm), increased the flowing time of gas in pipe, make pressurized air obtain sufficient cooling, satisfied print request.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is an AA schematic cross-section of the present utility model;

Fig. 3 is a pump head enlarged diagram of the present utility model;

1. cooling tubes among the figure, 2. cooling fan, 3. support, 4. air guide sleeve, 5. pump head, 6. exhaust elbow, 7. pressure regulator, 8. exhaust chamber, 9. airduct, 51. front-end bearing pedestals, 52. front covers, 53. radiating fin, 54. rear end covers, 55. rear bearing blocks, 56. rear bearings, 59. fore bearings.

Embodiment

A kind of as shown in Figure 1 exhaust elbow 6 that on the pump housing, is connected with, exhaust elbow 6 connects an end of cooling-part again, at the top of exhaust chamber 8 airduct 9 is arranged, airduct 9 is connected on the cooling tube 1, cooling-part is installed in pump housing outside, cover cooling fan 2 tops, air guide sleeve 4 is arranged between the pump housing and outer cover, be fixed with support in the bottom of air pump.

Pump head 5 structures as shown in Figure 3 are that front end is provided with front cover 52, rear end at pump saturating 5 is provided with rear end cover 54, front-end bearing pedestal 51 is installed on the boss of front cover 52, connect by screw, fore bearing 59 is installed in the front-end bearing pedestal 51, rear bearing block 55 is installed on the boss of rear end cover 54, rear bearing 66 is installed in the rear bearing block 55, rotatingshaft is by fore bearing 59 and rear bearing 56 supportings.

Claims

1. self-lubricating vacuum pressure compound air pump, form by motor and pump head, pump head inside is the pump housing (5), the pump housing (5) is provided with cooling fan (2) near the motor place, it is characterized in that: cooling-part (1) is arranged on the periphery at cooling fan (2) position of pump head, air guide sleeve (4) is arranged between the pump housing and outer cover, be fixed with support (3) in the bottom of air pump.

2. self-lubricating vacuum pressure compound air pump according to claim 1, it is characterized in that: the front end at the pump housing (5) is provided with front cover (52), be provided with rear end cover (55) in the rear end of the pump housing, front-end bearing pedestal (51) is installed on the front cover (52), rear bearing block (55) is installed on the rear end cover (54), fore bearing (59) is installed on the front-end bearing pedestal (51), rear bearing (56) is installed on the rear bearing block (55), rotatingshaft is by fore bearing and rear bearing.

3. self-lubricating vacuum pressure compound air pump according to claim 2 is characterized in that: the cylindrical of the outside of the described pump housing (5), front-end bearing pedestal (51), the cylindrical of rear bearing block (55) have radiating fin.

4. self-lubricating vacuum pressure compound air pump according to claim 1 is characterized in that: described air guide sleeve (4) is oblate column structure for end face, and an end and body end form rear bearing block (55) formation of the pump housing (5) and seal.

5. self-lubricating vacuum pressure compound air pump according to claim 1 is characterized in that: described cooling-part (2) is made up of cooling tube, is double layer construction, is distributed as outer 8,7 of internal layers.

6. self-lubricating vacuum pressure compound air pump according to claim 1 is characterized in that: described support (3) has two band irons (32), at the two ends of band iron (32) rubber footing (31) is arranged.

7. self-lubricating vacuum pressure compound air pump according to claim 1 is characterized in that: be provided with between described support and the air pump and regulate bolt (33).