CN218325224U - Diaphragm compressor connecting rod structure - Google Patents

Abstract

The utility model relates to a diaphragm compressor, specifically a diaphragm compressor connecting rod structure, including the body of rod and major part lid, the body of rod includes pole portion, pole portion one end is the annular microcephaly of ring form, the other end is the annular major part of semicircle, form the ring after major part lid and major part rigid coupling, different from prior art, pole portion and major part non-circular arc transition, but pole portion both sides expand outward respectively to major part one end and form the inclined plane section, the inclined plane section extends to major part one end again and forms the plane section, the plane section is connected as an organic whole with the major part; the part of the big head which is not fixedly connected with the plane section is a vertical section. Compared with the prior art, the utility model discloses pole portion and big head non-circular arc transition, but the pole portion both sides expand outward respectively to big head one end and form the inclined plane section, and the inclined plane section extends formation plane section to big head one end again, and the plane section of both sides is convenient adding location and clamping man-hour.

Description

Diaphragm compressor connecting rod structure

Technical Field

The utility model relates to a diaphragm compressor specifically is a diaphragm compressor connecting rod structure.

Background

The diaphragm compressor is a positive displacement compressor with a special structure, and is characterized in that a piston pushes working oil in an oil cavity of an oil cylinder, the oil uniformly pushes a diaphragm to reciprocate in a diaphragm cavity formed between a cylinder cover and a curved surface of an oil distribution disc after passing through the oil distribution disc, the volume of an air cavity of a cylinder is changed, and the purpose of compressing and conveying gas is achieved under the condition that an air suction valve and an air discharge valve work in a matched mode.

The connecting rod is a key component of the diaphragm compressor transmission and bears the gas force directly transmitted from the diaphragm head and the reciprocating inertia force of the piston crosshead, and the connecting rod has serious consequences once the connecting rod fails.

The patent of chinese invention with an authorization publication number of CN101122324B discloses a multi-fulcrum crank mechanism with a crankshaft as a combined eccentric wheel shaft structure, and a structural schematic diagram of a conventional middle-open connecting rod is disclosed in an attached figure 4 of the mechanism. However, the big head end and the rod part of the existing middle-open connecting rod are in arc transition, and are difficult to position and clamp during processing.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model discloses a diaphragm compressor connecting rod structure, the technical scheme who takes is:

a kind of diaphragm compressor tie rod structure, including body of rod and big end cover, the body of rod includes the pole portion, one end of pole portion is the small head of the circular ring shape, another end is the big end of the semicircular ring shape, form the circular ring after big end cover and big end building in, different from prior art, pole portion and big end are not the circular arc transition, but both sides of pole portion expand to one end of big end and form the inclined plane section separately, the inclined plane section extends to one end of big end and forms the level section again, the level section is connected with big end as an organic whole; the part of the big head which is not fixedly connected with the plane section is a vertical section.

Furthermore, an oil passage is formed in the center of the rod part, one end of the oil passage is opened on the inner circular surface of the small head, and the other end of the oil passage is opened on the inner circular surface of the large head; the rod body and the big end cover are in transition or clearance fit with the bearing bush, a bearing bush oil hole is formed in the position, corresponding to the oil passage, of the bearing bush, and a bearing bush ring oil groove passing through the bearing bush oil hole is formed in the outer circular surface of the bearing bush; transition or clearance fit axle sleeve in the microcephaly, the position that corresponds the oil duct on the excircle face of axle sleeve sets up annular axle sleeve ring oil groove, and a plurality of axle sleeve oilholes are radially seted up along the axle sleeve to the tank bottom of axle sleeve ring oil groove, and a plurality of axle sleeve straight oil grooves are seted up along the axial on the interior face of axle sleeve that corresponds every axle sleeve oilhole.

Furthermore, the two ends of the shaft sleeve are respectively abutted to check rings, and the check rings are fixedly connected with the rod body through screws.

Furthermore, an inner circular surface at the end part of the big head is provided with a big head wedge-shaped groove, a corresponding position of the big head cover is provided with a big head cover wedge-shaped groove, and a corresponding wedge-shaped bulge extends outwards from the corresponding position of the bearing bush.

Furthermore, the inner circular surfaces at the two ends of the bearing bush are provided with oil storage tanks passing through oil grooves of the bearing bush ring, and the outline shapes of the oil storage tanks are rectangular.

Furthermore, a rod body through hole is formed in the vertical face section, a large head cover through hole is formed in the corresponding position of the large head cover, a screw rod of the bolt penetrates through the rod body through hole and the large head cover through hole and then is in threaded connection with the nut, and only a small gap exists between one side face of the hexagonal head of the bolt and the plane section.

Furthermore, two sides of the rod part extend inwards to form a weight reduction groove, and the cross section of the rod part is I-shaped.

Compared with the prior art, the utility model discloses pole portion and big head non-circular arc transition, but the pole portion both sides expand outward respectively to big head one end and form the inclined plane section, and the inclined plane section extends to big head one end again and forms the plane section, and the plane section of both sides is convenient adding man-hour location and clamping.

Drawings

Fig. 1 is a schematic view of a structure of a conventional diaphragm compressor connecting rod.

Fig. 2 is a schematic structural diagram of the present invention.

Fig. 3 is a schematic structural view of the rod body of the present invention.

Fig. 4 is a schematic view of the structure of fig. 3 from another view angle.

Fig. 5 is a schematic structural view of the large head cover of the present invention.

Fig. 6 is a schematic structural diagram of the bearing bush of the present invention.

Fig. 7 is a schematic view of the structure of fig. 6 from another view angle.

Fig. 8 is a schematic structural view of the shaft sleeve of the present invention.

Detailed Description

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "communicating" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; the two elements may be connected mechanically or electrically, directly or indirectly through an intermediate medium, or through a communication between the two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The present invention is described in terms of specific embodiments, and other advantages and benefits of the present invention will become apparent to those skilled in the art from the following disclosure. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The connecting rod structure of the diaphragm compressor comprises a rod body 1 and a large head cover 2, wherein the rod body 1 comprises a rod part 11, one end of the rod part 11 is a circular small head 12, the other end of the rod part is a semicircular large head 13, the large head cover 2 is fixedly connected with the large head 13 to form a circular ring, the rod part 11 and the large head 13 are in non-circular arc transition, two sides of the rod part 11 are respectively expanded towards one end of the large head to form an inclined plane section 14, the inclined plane section 14 extends towards one end of the large head to form a plane section 15, and the plane section 15 is connected with the large head 13 into a whole; the part of the large head 13 which is not fixedly connected with the plane section 15 is a vertical section 16. The plane sections on the two sides are convenient to position and clamp during machining.

In another preferred embodiment, the center of the rod part 11 is provided with an oil passage 18, one end of the oil passage 18 is opened on the inner circular surface of the small head 12, and the other end is opened on the inner circular surface of the large head 13; the rod body 1 and the big head cover 2 are in transition or clearance fit with the bearing bush 3, a bearing bush oil hole 31 is formed in the position, corresponding to the oil passage 18, on the bearing bush 3, and a bearing bush ring oil groove 32 passing through the bearing bush oil hole 31 is formed in the outer circular surface of the bearing bush 3; the small head 12 is internally provided with a transition or clearance fit shaft sleeve 4, an annular shaft sleeve ring oil groove 41 is formed in the position, corresponding to the oil passage 18, on the outer circular surface of the shaft sleeve 4, a plurality of shaft sleeve oil holes 42 are formed in the bottom of the shaft sleeve ring oil groove 41 along the radial direction of the shaft sleeve, and a plurality of shaft sleeve straight oil grooves 43 are formed in the inner circular surface of the shaft sleeve 4 corresponding to each shaft sleeve oil hole 42 along the axial direction. Therefore, the lubricating effect can be improved, the service life is prolonged, and the maintenance period is prolonged.

In another preferred embodiment, the two ends of the sleeve 4 are respectively abutted with the retaining rings 5, and the retaining rings 5 are fixedly connected with the rod body 1 through screws. The inner circle surface at the end of the big head 13 is provided with a big head wedge-shaped groove 19, the corresponding position of the big head cover 2 is provided with a big head cover wedge-shaped groove 22, and the corresponding position of the bearing bush 3 extends outwards to form a corresponding wedge-shaped bulge 33. Thus, the bearing bush and the shaft sleeve can be positioned.

In another preferred embodiment, the inner circumferential surfaces of the two ends of the bearing shell 3 are provided with oil storage grooves 34 passing through the bearing ring oil grooves 32, and the oil storage grooves 34 are rectangular in outline. The oil storage tank 34 can store a certain amount of lubricating oil, and can drive the lubricating oil in the oil storage tank 34 to flow among the shaft sleeve ring oil groove, the bearing bush ring oil groove 32, the shaft sleeve straight oil groove 43 and the oil passage 18 when the crankshaft rotates, so that the lubricating effect is further improved, the service life is prolonged, and the maintenance period is prolonged.

In another preferred embodiment, the vertical section 16 is provided with a rod through hole 17, a big head cover through hole 21 is provided at a corresponding position of the big head cover 2, a screw of the bolt 6 is screwed with a nut after passing through the rod through hole 17 and the big head cover through hole 21, and only a small gap exists between one side surface of the hexagonal head of the bolt 6 and the plane section 15. Therefore, the bolt can be made thick enough, the nail head can be naturally fixed, and the bolt can be screwed up by independently screwing the nut.

In another preferred embodiment, the shaft 11 extends inwardly to form weight-reducing slots 20, and the cross-sectional shape of the shaft 11 is i-shaped. Is beneficial to reducing weight on the basis of not reducing strength.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims (7)

1. A connecting rod structure of a diaphragm compressor comprises a rod body (1) and a big head cover (2), wherein the rod body (1) comprises a rod part (11), one end of the rod part (11) is a circular small head (12), the other end of the rod part is a semicircular big head (13), and the big head cover (2) is fixedly connected with the big head (13) to form a circular ring; the part of the big head (13) which is not fixedly connected with the plane section (15) is a vertical section (16).

2. The connecting rod structure of the diaphragm compressor as claimed in claim 1, wherein the rod portion (11) is centrally provided with an oil passage (18), one end of the oil passage (18) opens at the inner circumferential surface of the small end (12), and the other end opens at the inner circumferential surface of the large end (13); the rod body (1) and the big head cover (2) are in transition or clearance fit with the bearing bush (3), a bearing bush oil hole (31) is formed in the position, corresponding to the oil passage (18), on the bearing bush (3), and a bearing bush ring oil groove (32) passing through the bearing bush oil hole (31) is formed in the outer circular surface of the bearing bush (3); transition or clearance fit axle sleeve (4) in little head (12), the position that corresponds oil duct (18) on axle sleeve (4) excircle face sets up annular axle sleeve ring oil groove (41), and a plurality of axle sleeve oilholes (42) are radially seted up along the axle sleeve to the tank bottom of axle sleeve ring oil groove (41), and a plurality of axle sleeve straight oil grooves (43) are seted up along the axial on the interior disc of axle sleeve (4) that corresponds every axle sleeve oilhole (42).

3. The connecting rod structure of the diaphragm compressor as claimed in claim 2, wherein two ends of the shaft sleeve (4) are respectively abutted against the check rings (5), and the check rings (5) are fixedly connected with the rod body (1) through screws.

4. The connecting rod structure of the diaphragm compressor as claimed in claim 2, wherein the inner circular surface of the end of the big head (13) is provided with a big head wedge-shaped groove (19), the corresponding position of the big head cover (2) is provided with a big head cover wedge-shaped groove (22), and the corresponding position of the bearing bush (3) is extended with a corresponding wedge-shaped protrusion (33).

5. A diaphragm compressor connecting rod structure according to claim 2, wherein the inner circumferential surfaces of both ends of the bearing shell (3) are provided with oil storage grooves (34) passing through the bearing ring oil grooves (32), and the oil storage grooves (34) have a rectangular shape in profile.

6. The connecting rod structure of diaphragm compressor as claimed in claim 1, wherein the vertical section (16) is provided with a rod through hole (17), the large head cover (2) is provided with a large head cover through hole (21) at a corresponding position, the screw of the bolt (6) passes through the rod through hole (17) and the large head cover through hole (21) and then is screwed with the nut, and only a small gap exists between one side surface of the hexagonal head of the bolt (6) and the plane section (15).

7. The connecting rod structure of a diaphragm compressor as claimed in claim 1, wherein the rod portion (11) is formed with weight-reducing grooves (20) extending inward from both sides thereof, and the rod portion (11) has an i-shaped cross-sectional shape.

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