CN219840775U - Novel crankcase protecgulum structure of oilless air compressor machine - Google Patents

Abstract

The utility model provides a novel crankcase front cover structure of an oil-free air compressor, and belongs to the technical field of gas compression equipment. The novel crankcase ventilation device solves the problem that the breather forms an extra bulge on the crankcase, and is easy to collide and damage in the use process. The utility model provides a crankcase protecgulum structure of oil-free air compressor machine, includes the box and installs the front end housing on the box, and the front end of box is provided with circular through-hole, and circular through-hole department is fixed with flange joint spare, and the center of flange joint spare inwards sunken formation holding chamber has offered the gas pocket in the center in holding chamber simultaneously, and flange joint spare's external fixation has the front end housing, and the breathing hole that runs through has been offered to the outside edge of front end housing, be provided with the filter core between flange joint spare and the front end housing, the filter core is its both ends face of annular respectively with flange joint spare and front end housing support fixedly. The utility model is equivalent to the structure of the respirator built-in, and has the advantages of difficult damage and more attractive appearance.

Description

Novel crankcase protecgulum structure of oilless air compressor machine

Technical Field

The utility model belongs to the technical field of gas compression equipment, relates to an oil-free air compressor, and in particular relates to a novel crankcase front cover structure of the oil-free air compressor.

Background

The principle of the piston air compressor is that a crankcase drives a piston to reciprocate in a cylinder to realize the process of air intake and air exhaust, so that the compressed air is delivered into an air storage tank.

The crankcase is a conversion device of mechanical movement mode in the air compressor, the rotary movement of the motor rotor is converted into the reciprocating movement of the piston through the crankshaft connecting rod, and the volume in the crankcase can generate periodical change when the piston of the air compressor reciprocates, so that the pressure in the crankcase is always kept constant, and a respirator is arranged on an end cover of the crankcase, and the respirator has the functions of ensuring the flow of air in the crankcase and preventing external dust from entering the crankcase when in suction.

In the prior art, as disclosed in patent number [ 202121558897.1 ], a front cover assembly of a crankcase of a piston air compressor is disclosed, wherein a boss with an integrated structure is disclosed on a panel of a front cover body, a respirator is arranged at the upper end of the boss, meanwhile, the respirator is of an external structure, and through the use feedback of the current consumers, the structure has the following problems that the respirator forms an extra bulge on the crankcase, the crankcase is easy to collide and damage in the use process, meanwhile, for manufacturers, a hole for installing the respirator is additionally formed on an end cover in the later period, and the installation procedure is increased.

Disclosure of Invention

The utility model aims at solving the problems in the prior art and provides a novel crankcase front cover structure of an oil-free air compressor, which is equivalent to a novel crankcase front cover structure with a built-in breather structure, is not easy to damage and has more attractive appearance.

The aim of the utility model can be achieved by the following technical scheme: the utility model provides a novel crankcase protecgulum structure of oilless air compressor machine, includes the box and installs the front end housing on the box, the front end of box is provided with circular through-hole, circular through-hole department be fixed with flange joint spare, the center of flange joint spare inwards caves in and forms the center of holding chamber simultaneously and seted up the gas pocket, flange joint spare's external fixation has the front end housing, the breathing hole of running through has been seted up at the outside edge of front end housing, flange joint spare and front end housing between be provided with the filter core, the filter core be its both ends face of annular respectively with flange joint spare and front end housing support fixedly by leaning on.

In the crankcase front cover structure of the novel oilless air compressor, the flange connecting piece is provided with a circle of outwards-protruding joint surface, and the outer ring of the joint surface is circumferentially provided with a plurality of U-shaped clamping grooves.

In the crankcase front cover structure of the novel oilless air compressor, the inner wall of the front end cover is provided with the clamping blocks which are corresponding to the U-shaped clamping grooves in number and matched with the U-shaped clamping grooves in shape.

In the crankcase protecgulum structure of novel oilless air compressor machine, the bottom surface of every U type draw-in groove has the location lug, has on every fixture block with location lug matched with positioning groove.

In the novel crankcase front cover structure of the oil-free air compressor, the bottom surface of the accommodating cavity is provided with the first limiting step, the bottom surface of the front end cover is provided with the second limiting step which is positioned on the same axis with the first limiting step and has the same size, and the outer diameters of the first limiting step and the second limiting step are smaller than the inner diameter of the filter element.

In the crankcase front cover structure of the novel oilless air compressor, the front end cover is circular, and the breathing holes are circumferentially arranged at the edge of the front end cover.

Compared with the prior art, the crankcase front cover structure of the novel oilless air compressor has the following advantages:

1. the flange connecting piece is added on the box body, so that a containing cavity for installing the filter element is formed, the filter element is fixed in the containing cavity, and the filter element is matched with the breathing hole on the outer front end cover, so that the principle is equivalent to that of a traditional respirator, the respirator is not required to be additionally installed, no additional protrusion is formed on the whole shape, and collision damage is not easy to occur;

2. the front end cover is fixed in a rotation fastening mode, and the filter element is more convenient to disassemble, assemble and replace in the later stage.

Drawings

Fig. 1 is a schematic diagram of the overall structure of the oil-free air compressor;

fig. 2 is an exploded view of the present oil-free air compressor;

FIG. 3 is an enlarged view of the structure of the U-shaped clamping groove on the flange connector;

FIG. 4 is an enlarged view of the structure of the latch inside the front end cap;

in the figure, 1, a box body; 2. a front end cover; 2a, clamping blocks; 2b, positioning grooves; 3. a circular through hole; 4. a flange connection; 4a, a containing cavity; 4b, air holes; 5. a breathing hole; 6. a filter element; 7. a joint surface; 7a, U-shaped clamping grooves; 7b, positioning lugs; 8. a first limiting step; 9. and a limiting step II.

Description of the embodiments

The following are specific embodiments of the present utility model and the technical solutions of the present utility model will be further described with reference to the accompanying drawings, but the present utility model is not limited to these embodiments.

As shown in fig. 1 to 4, the novel crankcase front cover structure of the oil-free air compressor comprises a box body 1 and a front end cover 2 arranged on the box body 1, wherein a circular through hole 3 is formed in the front end of the box body 1, a flange connecting piece 4 is fixed at the position of the circular through hole 3, a round of circular step structure is arranged at the rear of the flange connecting piece 4 and is in clearance fit with the circular through hole 3, and the novel crankcase front cover structure is used for positioning during assembly of the flange connecting piece 4, so that the fixing screw is more convenient.

The center of the flange connecting piece 4 is inwards sunken to form a containing cavity 4a, meanwhile, an air hole 4b is formed in the center of the containing cavity 4a, and the air hole 4b is used for enabling air in the box body 1 to circulate with the outside; the outside of flange joint spare 4 is fixed with front end housing 2, and the breathing hole 5 that runs through has been seted up to the outside edge of front end housing 2, is provided with filter core 6 between flange joint spare 4 and the front end housing 2, and filter core 6 is its both ends face in annular respectively with flange joint spare 4 and front end housing 2 support fixedly.

The mounting mode and principle of the crankcase front cover structure of the oil-free air compressor are as follows: firstly, a flange connecting piece 4 is initially fixed in a circular through hole 3, screws are penetrated and arranged on the periphery of the flange connecting piece to be fastened with a box body 1, then a filter element 6 is placed in a containing cavity 4a of the flange connecting piece 4, a front end cover 2 is screwed and fixed on the flange connecting piece 4, two ends of the filter element 6 are mutually pressed, supported and fixed, when the piston stroke of an air compressor rises, the pressure intensity in the box body 1 is reduced, and external air sequentially enters the box body 1 through a breathing hole 5, the filter element 6 and an air hole 4 b; when the piston stroke of the air compressor is reduced, the pressure inside the air compressor box 1 is increased, and the internal air is discharged out of the air compressor box 1 through the air hole 4b, the filter element 6 and the breathing hole 5 in sequence, so that the pressure inside the air compressor box 1 can be kept constant all the time in the structure.

Further, the flange connecting piece 4 is provided with a circle of outwards protruding joint surface 7, the outer ring of the joint surface 7 is circumferentially provided with a plurality of U-shaped clamping grooves 7a, the inner wall of the front end cover 2 is provided with clamping blocks 2a which correspond to the U-shaped clamping grooves 7a in number and are matched with each other in shape, in the structure, the front end cover 2 can be directly fixed with the box body 1 in a screwing mode, the front-stage assembly is convenient, and the filter element 6 leaves are convenient to replace in the later stage.

In order to make the screwing structure of the front end cover 2 firmer and prevent loosening caused by vibration of the air compressor, the bottom surface of each U-shaped clamping groove 7a is provided with a positioning lug 7b, each clamping block 2a is provided with a positioning groove 2b matched with the positioning lug 7b, and after the front end cover 2 is screwed, the positioning lug 7b is just clamped into the positioning groove 2 b.

The filter core 6 is circular, in order to fix a position the mounting structure of filter core 6, be provided with spacing step one 8 in the bottom surface of holding chamber 4a, the bottom surface of front end housing 2 is provided with spacing step two 9 that are in same axis and the same size with spacing step one 8, spacing step one 8 and spacing step two 9 external diameter all are less than the internal diameter of filter core 6, the both ends of filter core 6 are located spacing step one 8 and spacing step two 9 respectively to overlap, fix it, wherein gas pocket 4b is located spacing step one 8's center.

The front end cover 2 is circular, the breathing holes 5 are circumferentially arranged at the edge of the front end cover 2, the structure enables the front end cover 2 to be more attractive in appearance, the number of the breathing holes 5 is multiple groups, and the smoothness of air flow is improved.

The specific embodiments described herein are offered by way of example only to illustrate the spirit of the utility model. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the utility model or exceeding the scope of the utility model as defined in the accompanying claims.

Although various terms are used more herein, the use of other terms is not precluded. These terms are used merely for convenience in describing and explaining the nature of the utility model; they are to be interpreted as any additional limitation that is not inconsistent with the spirit of the present utility model.

Claims (6)

1. The utility model provides a novel crankcase protecgulum structure of oilless air compressor machine, includes box (1) and installs front end housing (2) on box (1), a serial communication port, the front end of box (1) is provided with circular through-hole (3), circular through-hole (3) department be fixed with flange joint spare (4), the center of flange joint spare (4) inwards sunken formation holding chamber (4 a) has seted up gas pocket (4 b) in the center of holding chamber (4 a) simultaneously, the outside of flange joint spare (4) is fixed with front end housing (2), breathing hole (5) that run through have been seted up at the outside edge of front end housing (2), flange joint spare (4) and front end housing (2) between be provided with filter core (6), filter core (6) be annular its both ends face respectively with flange joint spare (4) and front end housing (2) support fixedly.

2. The crankcase front cover structure of the novel oil-free air compressor according to claim 1, wherein the flange connecting piece (4) is provided with a circle of joint surface (7) protruding outwards, and a plurality of U-shaped clamping grooves (7 a) are formed in the circumferential direction of the outer ring of the joint surface (7).

3. The crankcase front cover structure of the novel oil-free air compressor according to claim 2, wherein the inner wall of the front end cover (2) is provided with clamping blocks (2 a) which are corresponding to the U-shaped clamping grooves (7 a) in number and matched with the U-shaped clamping grooves in shape.

4. A novel crankcase front cover structure of an oil-free air compressor according to claim 3, wherein each U-shaped clamping groove (7 a) is provided with a positioning lug (7 b) on the bottom surface, and each clamping block (2 a) is provided with a positioning groove (2 b) matched with the positioning lug (7 b).

5. The crankcase front cover structure of the novel oil-free air compressor according to claim 1, wherein a first limiting step (8) is arranged on the bottom surface of the accommodating cavity (4 a), a second limiting step (9) which is coaxial with the first limiting step (8) and has the same size is arranged on the bottom surface of the front end cover (2), and the outer diameters of the first limiting step (8) and the second limiting step (9) are both smaller than the inner diameter of the filter element (6).

6. The crankcase front cover structure of the novel oil-free air compressor according to claim 1, wherein the front end cover (2) is circular, and the breathing holes (5) are circumferentially arranged at the edge of the front end cover (2).