CN218325186U

CN218325186U - Improved crankcase of diaphragm compressor

Info

Publication number: CN218325186U
Application number: CN202222430213.0U
Authority: CN
Inventors: 邢子义; 冷晓慧; 曲光; 李树奎; 赵永证
Original assignee: Yantai Dongde Hydrogen Energy Technology Co Ltd
Current assignee: Yantai Dongde Hydrogen Energy Technology Co Ltd
Priority date: 2022-09-14
Filing date: 2022-09-14
Publication date: 2023-01-17
Anticipated expiration: 2032-09-14

Abstract

The utility model relates to a diaphragm compressor specifically is a modified diaphragm compressor crankcase, including the box, set up the connecting rod clearing hole on the preceding lateral wall of box and/or the back lateral wall, different with prior art be, on preceding lateral wall and/or the back lateral wall, around the outside extension of connecting rod clearing hole form the boss that the profile shape is the fillet square, the outer plane and the horizontal plane quadrature of boss are being close to the boss edge and are evenly seting up a plurality of blind screws, the center connection line of a plurality of blind screws forms the square. Compared with the prior art, the utility model discloses than 1 screw greatly increased on current crankcase and midbody flange top, the pulling force of current 1 screw is shared to a plurality of screws like this, and screw fatigue fracture's possibility significantly reduces.

Description

Improved crankcase of diaphragm compressor

Technical Field

The utility model relates to a diaphragm compressor specifically is a modified diaphragm compressor crankcase.

Background

The diaphragm compressor mainly comprises a motor, a base, a crankcase, a crankshaft connecting rod motion mechanism, a cylinder body part, an oil-gas pipeline, an electric control system and some accessories. The crankcase bears the weight of the whole diaphragm compressor, particularly, the middle body is fixedly connected to the two sides of the crankcase, the middle body is fixedly connected with the membrane head to form a cantilever structure, and the membrane head is large in size and weight and can form a large load on the joint of the crankcase and the middle body. The existing crankcase is connected with the intermediate body through a flange of the intermediate body, the flange is usually circular, so that a screw on the top of the flange can bear very large tensile force, and the screw is easy to fatigue and break during long-time operation, so that equipment failure is caused.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model discloses an improved diaphragm compressor crankcase, the technical scheme who takes is:

the utility model provides an improved diaphragm compressor crankcase, includes the box, offers the connecting rod through hole on the preceding lateral wall of box and/or the back side wall, and different with prior art, on preceding lateral wall and/or the back side wall, outwards extend around the connecting rod through hole and form the boss that the profile shape is fillet square, the outer plane and the horizontal plane quadrature of boss are being close to the boss edge and are evenly offered a plurality of blind screw, the central line of a plurality of blind screw forms the square.

Further, correspondingly, the outline shape of the flange at the inner end of the intermediate body is the same as that of the boss, a plurality of through holes are formed in positions corresponding to the blind screw holes, and a plurality of screws penetrate through the through holes and are in threaded connection with the blind screw holes respectively.

Furthermore, in order to increase the depth of the blind screw hole, the position in the box body corresponding to the blind screw hole extends inwards to form a nipple, and the blind screw hole extends into the nipple.

Furthermore, the box body is in a frustum shape integrally, the outline of the cross section is in a round-corner rectangle shape, and accordingly the thickness of the top end of the boss is larger than that of the bottom end of the boss.

Furthermore, a rectangular opening at the upper end of the box body is closed by a box cover fixedly connected with the box body, and a sealing gasket is clamped between the lower surface of the box cover and the upper end surface of the box body.

Compared with the prior art, the utility model discloses outwards extend around connecting rod clearing hole and form the intensity that the boss can strengthen the crankcase lateral wall, simultaneously because boss outline shape is the fillet square, and a plurality of blind screw squares are arranged, consequently the blind screw quantity that is located the boss top is 3 at least, than 1 screw greatly increased on current crankcase and midbody flange top, the pulling force of current 1 screw is shared to a plurality of screws like this, screw fatigue fracture's possibility significantly reduces.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

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

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 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 detail with reference to the specific embodiments, and other advantages and effects of the present invention will be apparent to those skilled in the art from the disclosure herein. 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 improved diaphragm compressor crankcase comprises a case body 100, a connecting rod through hole 101 is formed in the front side wall and/or the rear side wall of the case body 100, a boss 102 which is formed in the shape of a round square in a protruding mode is formed in the front side wall and/or the rear side wall and extends outwards around the connecting rod through hole 101, the outer plane of the boss 102 is perpendicular to the horizontal plane, a plurality of blind screw holes 103 are uniformly formed in the position, close to the edge of the boss 102, of the boss, and the center connecting lines of the blind screw holes 103 form a square.

Correspondingly, the outline shape of the inner end flange 201 of the intermediate body 200 is the same as that of the boss 102, a plurality of through holes are formed at positions corresponding to the plurality of blind screw holes 103, and a plurality of screws penetrate through the through holes and are respectively in threaded connection with the plurality of blind screw holes 103.

The boss is formed by extending the through hole of the connecting rod outwards, so that the strength of the side wall of the crankcase can be enhanced, meanwhile, the boss is in a square shape with a round angle, and the plurality of blind screw holes are arranged in a square shape, so that the number of the blind screw holes at the top end of the boss is at least 3, and compared with 1 screw at the top end of the existing crankcase and the intermediate flange, the number of the blind screw holes is greatly increased, a plurality of screws share the tension of the existing 1 screw, and the possibility of fatigue fracture of the screws is greatly reduced.

In another preferred embodiment, in order to increase the depth of the blind screw hole 103, a nipple 104 is formed in the case body 100 to extend inward at a position corresponding to the blind screw hole 103, and the blind screw hole 103 extends into the nipple 104. This further improves the strength of the screw.

In another preferred embodiment, the box 100 is generally frustum-shaped, and the cross section of the box is in the shape of a rounded rectangle, and accordingly, the top thickness of the boss 102 is greater than the bottom thickness thereof. The frustum shape is more stable, and the top thickness of boss 102 is greater than its bottom thickness and can adapt to the requirement that the top bore tensile force.

In another preferred embodiment, the rectangular opening at the upper end of the box 100 is closed by a cover 300 fixedly connected to the box 100, and a gasket is interposed between the lower surface of the cover 300 and the upper end surface of the box 100. The top end of the crankcase is integrated, and the strength of the crankcase is improved.

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

1. The improved crankcase of the diaphragm compressor comprises a case body (100), wherein a connecting rod through hole (101) is formed in the front side wall and/or the rear side wall of the case body (100), and is characterized in that a boss (102) with the outline shape of a round-corner square is formed on the front side wall and/or the rear side wall in an outward extending mode around the connecting rod through hole (101), the outer plane of the boss (102) is orthogonal to the horizontal plane, a plurality of blind screw holes (103) are uniformly formed in the position, close to the edge of the boss (102), of the boss, and the center connecting line of the blind screw holes (103) forms a square.

2. An improved diaphragm compressor crankcase according to claim 1, characterized in that, correspondingly, the inner end flange (201) of the intermediate body (200) has the same contour shape as the boss (102), and a plurality of through holes are formed at positions corresponding to the plurality of blind screw holes (103), and a plurality of screws are threaded through the through holes and respectively engaged with the plurality of blind screw holes (103).

3. An improved diaphragm compressor crankcase according to claim 1, wherein to increase the depth of the blind screw hole (103), a nipple (104) is formed extending inwardly in the case (100) at a position corresponding to the blind screw hole (103), the blind screw hole (103) extending into the nipple (104).

4. The improved crankcase of diaphragm compressors according to claim 1, wherein the box body (100) is generally frustum-shaped, and the cross-sectional profile is a rounded rectangle, and accordingly the top thickness of the boss (102) is greater than the bottom thickness thereof.

5. The improved crankcase of the diaphragm compressor as claimed in claim 1, wherein the rectangular opening at the upper end of the case body (100) is closed by a case cover (300) fixedly connected with the case body (100), and a sealing gasket is clamped between the lower surface of the case cover (300) and the upper end surface of the case body (100).