CN1378043A

CN1378043A - Slide sheet type gas compressor with load discharge ring structure

Info

Publication number: CN1378043A
Application number: CN 02109642
Authority: CN
Inventors: 杨群; 孟庆凯
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-05-13
Filing date: 2002-05-13
Publication date: 2002-11-06
Anticipated expiration: 2022-05-13
Also published as: CN1136394C

Abstract

The slide sheet type gas compressor with load discharge ring structure includes cylinder, load discharge ring and slide sheet, and features that the sldie sheet consists of a big part and a small part connected together. When the compressor works, the outut end of the big part slide contacts with the inner surface of the load discharge ring and the outer end of the small part slide contacts with the inner surface of the cylinder. The big part and the small part is so made in different material that the small part has fast wear rate in the case of same friction condition or the small part has smaller friction power consumption in the case of same friction condition and friction power consumption in the case of same friction condition and same wear. Compared with available technology, the present invention has higher mechanical efficiency and longer service life.

Description

A kind of slide sheet type gas compressor that has load discharge ring structure

Technical field

The present invention relates to a kind of gas compressor, exactly is a kind of slide sheet type gas compressor that has load discharge ring structure.

Background technique

At present, more common gas compressor mainly contains two classes, and a class is a piston gas compressor, and another kind of is slide sheet type gas compressor.Both compare, and piston gas compressor belongs to mature technology, thereby application is wider, and slide sheet type gas compressor then belongs to the further perfect technology that remains, thereby uses less.Outstanding features such as however, because slide sheet type gas compressor has simple in structurely, technology capability is good, and volume is little, in light weight, low production cost and stable working are good, and noise is low, but thereby its DEVELOPMENT PROSPECT more wide.The concrete make of existing slide sheet type gas compressor is more, and wherein, more representational cutting edge technology is the slide sheet type gas compressor that has load discharge ring structure.This compressor mainly is made up of cylinder, off-load ring, left and right side cover, main shaft, rotor and slide plate.Wherein, slide plate is made of the plate of the monolithic construction that adopts homogenous material to make; After the product assembling, also make and form following tectonic relationship between slide plate and off-load ring, the cylinder: when compressor operating, promptly when slide plate be subjected to centrifugal action and outside when moving to limit position, form between its exterior edge face and the off-load ring inner surface and then keep the gap between sliding contact and the cylinder surfaces.Since this technology is come out, though the technological progress that promotes slide sheet type gas compressor has been produced significant effects, but, also still there are some problems in actual applications in it, these problems embody a concentrated expression of following several respects: first, between slide plate outer end and the cylinder surfaces gap is set, the sealability in compressor operating chamber has directly been destroyed in this gap, thereby reduces the mechanical efficiency of equipment unavoidably; The second, people are in order to reduce described gap to the adverse effect that plant machinery efficient produces as far as possible, just have to this gap be provided with very little, 0.1～0.2mm is only arranged usually.In this case, even slide plate adopts high abrasion resisting material to make, so in real work, along with the continuous wearing and tearing between slide plate outer end and the off-load ring inner surface, this gap is usually also only the utmost point just complete obiteration in the short time of 6～8 months, and when slide plate adopted that high-abrasive material is not made, the time that this gap disappears was just shorter.The gap is in case disappear, and the equipment necessary condition that is relied on of working under perfect condition has not just existed, thereby the design service life that means compressor finishes.Because its working life is so of short duration, so that is difficult to satisfy people's actual demand, thereby greatly restricted popularizing and using of this technology; The 3rd, the design service life of compressor if the user can not in time discover, and works on equipment after finishing, then certainly lead to following consequence: slide plate outer end while and off-load ring, cylinder surfaces sliding contact, produce friction power loss thereby make between slide plate and the cylinder.At this moment, because slide plate adopts homogenous material to make, thus regardless of its material, all will make this power consumption obtain very big value, thus make the slide plate outer end build up a large amount of frictional heats rapidly, and then its working environment of hurried deterioration.In this case, because the user is difficult to effectively evacuate frictional heat, so very easily make the high temperature sintering phenomenon taking place between slide plate outer end and the cylinder inner wall, and then cause slide plate and cylinder to damage, makes equipment scrapping.

Summary of the invention

The objective of the invention is for people provide a kind of mechanical efficiency that can improve equipment, the slide sheet type gas compressor that has load discharge ring structure that can prolong its working life again is so that overcome the prior art above shortcomings.

The object of the present invention is achieved like this, it comprises cylinder, off-load ring and slide plate, is characterized in that slide plate is fixedly connected by daughter and parent to form, during compressor operating, main and the off-load ring inner surface sliding contact in parent exterior edge face, the then main and cylinder surfaces sliding contact in daughter exterior edge face; The Manufacturing material of daughter and parent is different, the two kinds of materials of arranging in pairs or groups satisfy following condition simultaneously: when friction condition is identical, the rate of wear of the big primary and secondary body of the rate of wear of daughter, and when friction condition and wear extent homogeneous phase while, the friction power loss of daughter is less than the friction power loss of parent.

Lucky and the off-load ring inner surface sliding contact in above-mentioned parent exterior edge face, the then lucky and cylinder surfaces sliding contact in the exterior edge face of daughter.

Above-mentioned daughter, parent Manufacturing material are arranged in pairs or groups like this: the daughter Manufacturing material is folder cloth epoxy resin, and the parent Manufacturing material is a spheroidal graphite cast iron.

Above-mentioned daughter Manufacturing material is a cast copper, and the parent Manufacturing material is a spheroidal graphite cast iron.

After realizing, the present invention compared with prior art has following advantage: 1, all keep sliding contact between the internal surface owing to slide plate exterior edge face and off-load ring and cylinder, thereby guaranteed the sealability in compressor operating chamber, and then improved the mechanical efficiency of equipment; 2, slide plate is made of jointly daughter and parent, and both materials are different and meet foregoing collocation condition, simultaneously, also makes the main and off-load ring inner surface sliding contact in parent exterior edge face, and makes the main and cylinder surfaces sliding contact in daughter exterior edge face.Therefore, in manufacture process, as long as the collocation of the material of daughter and parent suitably, so in real work, the friction power loss that produces between slide plate and cylinder, the off-load ring is just necessarily very little, and remain in working life at slide plate stable, thereby greatly reduced equipment failure rate and will extend to tens times of prior art its working life, even tens times.

Description of drawings

Fig. 1 is the axial view profile of first kind of embodiment of the present invention.

Fig. 2 is that the A-A of Fig. 1 is to sectional view.

Fig. 3 is the axial view profile of second kind of embodiment of the present invention.

Fig. 4 is that the A-A of Fig. 3 is to sectional view.

Fig. 5 is the axial view profile of the third embodiment of the present invention.

Fig. 6 is that the A-A of Fig. 5 is to sectional view.

Fig. 7 is the axial view profile of the 4th kind of embodiment of the present invention.

Fig. 8 is that the A-A of Fig. 7 is to sectional view.

Embodiment

A kind of embodiment of the present invention as shown in Figure 1 and Figure 2.As seen from the figure, fundamental composition mode of the present invention and prior art are identical, and promptly it also is made up of main shaft 1, rotor 2, slide plate 3, cylinder 4, off-load ring 5, left cap 6, right cap 7.Wherein, cylinder is a cylindrical member, is shaped on suction port 11, exhaust port 12, nozzle opening 13 on its sidewall respectively, and its endoporus two ends are shaped on annular groove 14 respectively; Rotor is a cylinder component, and its heart portion is shaped on axial hole, the periphery body symmetry and makes several radially notches 8; Left and right sides covers and is shaped on through hole 15, vexed hole 16 respectively.During assembling, two off-load rings 5 are installed in respectively in the cylinder two end part annular groove 14, and make the rotatable contact of formation between the two; Left and right side cover is fixedly connected with the left and right end face seal of cylinder respectively, and makes the through hole 15 that is positioned on the left cap, the vexed hole 16 that is positioned on the right cap keep also making this concentric axis O with one heart ₁With the cylinder bore axes O ₂Between keep eccentric distance e; Main shaft 1 is hinged on it by the through hole 15 of left and right side cover, vexed hole 16, and makes it left end and stretch out left cap 6 exterior edge faces, uses when installing, and this external part and prime mover link; Rotor is fixedly mounted on the main shaft shaft part between the left and right side cover, and make it left and right sides end face respectively with the inner side surface sliding contact of left and right side cover; The inner of each plate body shape slide plate 3 is inserted in respectively in each described notch 8 of rotor, and both are free to slide connection, and the left and right side that makes each slide plate respectively with the inner side surface sliding contact of left and right side cover.The present invention compared with prior art, the difference only be following some: the first, slide plate is fixedly connected by daughter 10 and parent 9 respectively and forms.In the present embodiment, daughter is that cementation connects with the mode of being fixedly connected between the parent; Second, during compressor operating, be slide plate when moving to limit position outward because of centrifugal action, parent 9 exterior edge faces just with the 5 internal surface sliding contacts of off-load ring, a part of bore area sliding contact that daughter 10 exterior edge faces are then lucky and cylinder 4 internal surfaces are not promptly hidden by the off-load ring; The 3rd, the Manufacturing material of daughter and parent is different, when selecting two kinds of materials of collocation, should satisfy two conditions simultaneously: the one, and when friction condition was identical, the rate of wear of daughter was greater than the rate of wear of parent; The 2nd, friction condition and wear extent homogeneous phase while, the friction power loss of daughter is less than the friction power loss of parent.Said friction condition is identical to be meant: daughter and parent rub mutually with the object that same material is determined respectively, and daughter, parent are all identical with area of contact, positive pressure, speed of related movement between this object.In the present embodiment, the material of daughter is folder cloth epoxy resin, and the material of parent is a spheroidal graphite cast iron.

Fig. 3, Fig. 4 provide second kind of embodiment of the present invention.As seen from the figure, it is compared with last mode of execution, and difference only is parent 9 is made the branch body structure, and makes daughter 10 and parent 9 contour.

Fig. 5, Fig. 6 provide the third tool present embodiment of the present invention, and it is compared with preceding two kinds of mode of executions, and the main distinction is that the set-up mode of the make of its cylinder 4 and off-load ring 5 has adopted the another kind of form of prior art.As seen from the figure, this cylinder is formed by the tubular body and with the back-up ring 17 that this body is fixedly connected; 5 on two off-load rings form to turn between the inner by back-up ring 17 and described each annular groove 14 of cylinder respectively and connect, thereby form spacing between the same side end face of end face and cylinder outside making it, and make each end of cylinder bore increase the internal surface of an annular respectively thus; For the exterior edge face that guarantees slide plate parent, daughter forms the relation of sliding contact as previously mentioned respectively and between the internal surface of off-load ring, cylinder, the daughter 10 of slide plate is made of 3 blocks, and makes it to lay respectively at the middle part and the both sides of parent 9 outer ends simultaneously.

Fig. 7, Fig. 8 provide the 4th kind of embodiment of the present invention.It is compared with above each embodiment, and its main distinction is that the mode of structure of its cylinder and the set-up mode of off-load ring 5 have adopted another form of the prior art.As seen from the figure, cylinder is formed by the connection of two sections cylindrical shells, 18,19 sealing and fixing, and 3 ring bodies that off-load ring 5 then is connected in cylinder middle part and the two end part annular groove 14 by rotation respectively constitute; In addition, the parent 9 of slide plate is made of two not joining plates, 10 of daughters are made of the single block that is fixedly connected respectively on each plate, and make between the internal surface of the exterior edge face of parent, daughter and off-load ring, cylinder and keep foregoing sliding contact relation.

Above-mentioned embodiment of the present invention is not exhaustive.For example, the first, the internal surface of off-load ring is convexed or concaved in cylinder surfaces, when making the exterior edge face of slide plate parent be higher or lower than the exterior edge face of daughter equally simultaneously, the present invention also can realize; The second, in Fig. 2, Fig. 4, Fig. 6, Fig. 8, the exterior edge face of daughter, parent just respectively with cylinder, the sliding contact of off-load ring inner surface.Yet in actual manufacture process, when the transverse dimension of each block member that constitutes the slide plate daughter is slightly larger than or is slightly less than the transverse dimension of the cylinder surfaces of position opposite position with it and makes each exterior edge face transverse dimension of parent correspondingly be slightly less than or be slightly larger than the off-load ring inner surface transverse dimension of position opposite position with it, it is the main and off-load ring inner surface sliding contact in parent exterior edge face, during the exterior edge face of daughter then main and cylinder surfaces sliding contact, the present invention also allows; The 3rd, the material of daughter and parent can also be arranged in pairs or groups like this: parent adopts spheroidal graphite cast iron to make, and daughter then adopts cast steel material to make, or the like.In a word, can satisfy foregoing material and also have a lot, enumerate no longer one by one at this about daughter and parent material apolegamy condition; The 4th, daughter and the mode of being fixedly connected between the parent can also be inlay connect, composite casting connects, or the like.

Working principle of the present invention is:

Under the driving of prime mover, main shaft 1 and rotor 2 are around axle center O among the figure ₁Along the rotation of diagram n direction, and then drive slide plate 3 rotations, and make slide plate move to limit position outside under centrifugal action.At this moment, between the parent 9 and off-load ring 5 of slide plate 3, form sliding contact between the internal surface of daughter 10 and cylinder 4, and make off-load ring 5 under parent drives to be lower than the rotating speed rotation of slide plate 3 slightly.Just form the sealing active chamber of a volume-variation between the internal surface of the internal surface of two like this, adjacent slide plates 3, left and right side cover, the outer surface of rotor 2, cylinder 4 and the internal surface of off-load ring jointly.When the volume of active chamber became big, it sucked extraneous gas in it by suction port 11; And when the volume of active chamber diminished, it separated with suction port 11 again, and the gas of suction is compressed; When this gas was compressed to predetermined pressure, active chamber and exhaust port 12 were connected and pressurized gas are discharged from.Meanwhile, lubricant oil also constantly sprays in cylinder 4 chambeies from nozzle opening 13, and each moving element is lubricated and cools off, and is discharged by exhaust port 12 with pressurized gas then; After the pressurized gas that is mixed with lubricant oil passes through, make pressurized gas and lubricating oil separation again in an isolated plant, be provided for the user with pressurized gas after the lubricating oil separation and use, isolated lubricant oil is drawn go back to nozzle opening 13 places and is recycled.

Claims

1, a kind of slide sheet type gas compressor that has load discharge ring structure, it comprises cylinder, off-load ring and slide plate, it is characterized in that slide plate is fixedly connected by daughter and parent forms, during compressor operating, main and the off-load ring inner surface sliding contact in parent exterior edge face, the then main and cylinder surfaces sliding contact in daughter exterior edge face; The Manufacturing material of daughter and parent is different, the two kinds of materials of arranging in pairs or groups satisfy following condition simultaneously: when friction condition is identical, the rate of wear of daughter is greater than the rate of wear of parent, and when friction condition and wear extent homogeneous phase while, the friction power loss of daughter is less than the friction power loss of parent.

2,, it is characterized in that the lucky and off-load ring inner surface sliding contact in described parent exterior edge face, the then lucky and cylinder surfaces sliding contact in the exterior edge face of daughter according to the described a kind of slide sheet type gas compressor that has load discharge ring structure of claim 1.

3, according to claim 1 or 2 described a kind of slide sheet type gas compressors that have load discharge ring structure, it is characterized in that described daughter, parent Manufacturing material arrange in pairs or groups like this: the daughter Manufacturing material is centre cloth epoxy resin, and the parent Manufacturing material is a spheroidal graphite cast iron.

4, according to claim 1 or 2 described a kind of slide sheet type gas compressors that have load discharge ring structure, it is characterized in that described daughter Manufacturing material is a cast copper, the parent Manufacturing material is a spheroidal graphite cast iron.