CN219242205U

CN219242205U - Vibration/noise reduction type screw air compressor

Info

Publication number: CN219242205U
Application number: CN202320551444.9U
Authority: CN
Inventors: 付银
Original assignee: Qianji Jiangsu Energy Conservation Technology Co ltd
Current assignee: Qianji Jiangsu Energy Conservation Technology Co ltd
Priority date: 2023-03-20
Filing date: 2023-03-20
Publication date: 2023-06-23
Anticipated expiration: 2033-03-20

Abstract

The utility model belongs to the technical field of air compressors, and relates to a shock-absorbing and noise-reducing screw air compressor, which comprises a shell, wherein a shaft seat is arranged at one end of the shell in a protruding way, a notch is formed in the inner wall of the shaft seat, a positioning seat is arranged in the notch, one end of the positioning seat is embedded into the notch and is in sliding connection with the notch, an adjusting ring is arranged on the outer wall of the other end of the positioning seat, the inner wall of the adjusting ring is in threaded connection with the outer wall of the positioning seat, and a movable opening is formed in the adjusting ring along the circumferential direction; the inner wall of the positioning seat is obliquely arranged in a conical surface manner, the inner side of the positioning seat is provided with a bearing seat, the inner side of the bearing seat is provided with a bearing, one end of the bearing sleeve is provided with a positioning cover for supporting and pressing the bearing seat, the other end of the bearing seat is supported and pressed at one end of the notch, the positioning cover is fixedly connected with the shaft seat through a fastening piece, and the fastening piece penetrates through the movable opening; a damping gasket is arranged between the bearing seat and the positioning seat. Through rotatory adjusting ring, make positioning seat extrusion shock pad to eliminate the clearance, solved the problem that the main machine axle produces vibration easily after long-term use.

Description

Vibration/noise reduction type screw air compressor

Technical Field

The utility model belongs to the technical field of air compressors, and particularly relates to a shock-absorbing and noise-reducing screw air compressor.

Background

The air compressor is a device for compressing air, and is mainly driven by a motor directly to make a crankshaft or an eccentric device produce rotary motion, and drive a connecting rod to make a piston produce reciprocating motion to cause the volume change of a cylinder, so that the repetitive work of air suction, air compression and air exhaust is carried out. The air compressor is mainly divided into a reciprocating piston type air compressor, a rotary vane air compressor and a rotary screw air compressor. The screw air compressor is better than the piston air compressor, the vibration ratio is smaller, but the noise that the screw air compressor produced still has about 70 db, the noise of screw air compressor comes from inside the organism and outside the organism, the outside noise accessible of organism sets up shock mount noise reduction, and the noise that the inside produced of organism then can not effectively solve, especially the screw air compressor is after long-term use, the problem that the clearance increases appears between bearing and the casing, lead to the screw rod when high-speed rotation, the bearing can't effectively fix a position the axle end, thereby can cause the vibration, and produce the noise, can only reduce the clearance between bearing and the casing through the mode that sets up the gasket under general circumstances, but the gasket also can take place wearing and tearing after using a period, thereby need dismantle the change gasket once more, increase maintainer's work load, also influence the life of host computer easily.

Disclosure of Invention

The utility model discloses a vibration-damping noise-reducing screw air compressor aiming at the problems, and solves the problem that the air in the prior art can generate larger vibration and noise after being used for a long time.

The specific technical scheme is as follows:

the utility model provides a vibration/noise reduction type screw air compressor, includes the casing, the casing is rotated and is equipped with female screw rod and male screw rod, and casing one end arch is equipped with the axle bed, the axle bed is hollow structure and is used for the axle head of female screw rod to run through, is equipped with the notch on the axle bed opening one end inner wall, is provided with the positioning seat in the notch, positioning seat one end imbeds in with the notch and sliding connection with it, the cover is equipped with the adjusting ring on the positioning seat other end outer wall, threaded connection between adjusting ring inner wall and the positioning seat outer wall, set up two at least arc structure's movable mouth along circumference on the adjusting ring; the inner wall of the positioning seat is obliquely arranged in a conical surface manner, a bearing seat is arranged on the inner side of the positioning seat, a bearing is arranged on the inner side of the bearing seat, a bearing sleeve is arranged on the shaft end of the female screw rod, one end of the bearing sleeve is provided with a positioning cover for propping and positioning the bearing seat, the other end of the bearing seat is propped against one end of the notch, the edge of the positioning cover is fixedly connected with the shaft seat through at least two fasteners, and the fasteners horizontally penetrate through a movable opening respectively; the outer wall of the positioning seat is inclined in a conical surface and is adaptive to the structure of the inner wall of the notch, and a shock absorption gasket is arranged between the conical outer wall of the bearing seat and the conical inner wall of the positioning seat.

Further, the number of the bearings on the inner side of the bearing seat is at least two, a circle of separating rings for separating the two bearings are arranged in the center of the inner wall of the bearing seat in a protruding mode, accommodating grooves are formed in the inner walls of the two ends of the bearing seat, and positioning rings for positioning the bearings are detachably arranged in the accommodating grooves.

Further, the outer side surface of the positioning ring is flush with the end face of the bearing seat.

Further, at least one guide groove is axially formed in the outer wall of the positioning seat, guide strips matched with the guide grooves are arranged on the inner wall of the notch, and the sliding connection between the positioning seat and the notch is realized through the matching of the guide grooves and the guide strips.

Further, the minimum distance between the positioning cover and the end face of the shaft seat is larger than the thickness of the positioning ring.

Further, a circle of anti-skid patterns are arranged on the outer wall of the adjusting ring.

The beneficial effects of the utility model are as follows:

according to the utility model, the damping gasket is arranged between the positioning seat and the bearing seat, the inner wall of the positioning seat and the outer wall of the bearing seat are both arranged in a conical surface inclined manner, when the damping gasket is in clearance due to abrasion and causes vibration and noise, the positioning seat can be displaced and extruded by rotating the adjusting ring, so that the clearance is eliminated, the problem that vibration is easy to occur after the main machine shaft end is used for a long time is solved, and meanwhile, the problem that the gasket needs to be replaced frequently by manpower is also solved.

Drawings

Fig. 1 is a schematic structural diagram of embodiment 1 of the present utility model.

Fig. 2 is an enlarged schematic view at a in fig. 1.

FIG. 3 is a schematic view of the structure of the adjusting ring in the present utility model.

Fig. 4 is a schematic view showing the installation of the elastic bearing housing in embodiment 2 of the present utility model.

The device comprises a shell 1, a female screw 11, a male screw 12, a gear 13, a shaft seat 2, a notch 21, a guide bar 22, a positioning seat 3, a guide groove 31, an adjusting ring 4, a movable opening 41, a bearing seat 5, a separation ring 51, a containing groove 52, a positioning ring 53, a bearing 6, a fastener 7, a shock absorption gasket 8, an elastic bearing seat 9, an arc-shaped block 91, a mounting hole 911, a positioning groove 912, a spring 92 and a positioning cover 10.

Detailed Description

In order to make the technical scheme of the utility model clearer and more definite, the utility model is further described below with reference to the accompanying drawings, and any scheme obtained by carrying out equivalent substitution and conventional reasoning on the technical characteristics of the technical scheme of the utility model falls into the protection scope of the utility model. The fixed connection mentioned in the utility model is a common connection mode in the mechanical field, and the fixed connection can be realized by welding, bolt-nut connection and screw connection.

In the description of the utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the utility model.

Example 1

As shown in fig. 1-3, the vibration/noise reduction type screw air compressor comprises a casing 1, wherein a female screw 11 and a male screw 12 are rotationally arranged in the casing 1, the same shaft ends of the female screw 11 and the male screw 12 are in transmission connection through a gear 13, one end of the casing 1 is convexly provided with a shaft seat 2, the shaft seat 2 is of a hollow structure and is used for penetrating the shaft end of the female screw 11, a notch 21 is formed in the inner wall of an opening end of the shaft seat 2, a positioning seat 3 is arranged in the notch 21, one end of the positioning seat 3 is embedded into the notch 21, four guide grooves 31 are uniformly distributed on the outer wall of one end of the positioning seat 3 along the axial direction, and four guide strips 22 matched with the four guide grooves 31 are arranged on the inner wall of the notch 21 and are matched with the guide strips 22 through the guide grooves 31, so that sliding connection between the positioning seat 3 and the notch 21 is realized; an adjusting ring 4 is sleeved on the outer wall of the other end of the positioning seat 3, the inner wall of the adjusting ring 4 is in threaded connection with the outer wall of the positioning seat 3, six movable ports 41 with arc structures are formed in the adjusting ring 4 along the circumferential direction, and a circle of anti-skid patterns are formed in the outer wall of the adjusting ring 4 so as to facilitate adjustment of the adjusting ring 4 to enable the adjusting ring to rotate; the inner wall of the positioning seat 3 is obliquely arranged in a conical surface manner, the bearing seat 5 is arranged on the inner side of the positioning seat 3, two bearings are arranged on the inner side of the bearing seat 5, the bearings are sleeved on the shaft end of the female screw 11 to position the shaft end of the female screw, a positioning cover 10 for pressing and positioning the bearing seat 5 is arranged at one end of the bearing seat, the other end of the bearing seat 5 is pressed against one end of the notch 21, the edge of the positioning cover 10 is fixedly connected with the shaft seat 2 through six fasteners 7, each fastener 7 horizontally penetrates through a movable opening 41 respectively, the fasteners 7 can adopt bolts, the diameter of each bolt is larger than the width of the movable opening 41, the phenomenon of blocking is avoided, the minimum distance between the positioning cover 10 and the end surface of the shaft seat 2 is larger than the thickness of the positioning ring 53, and the positioning cover 10 and the shaft seat 2 are prevented from extruding the adjusting ring 4 to enable the adjusting ring 4 to be unable to rotate; when the adjusting ring 4 is rotated to adjust the position of the positioning seat 3, the displacement distance of the positioning seat 3 is generally less than 5mm, so that the rotating angle of the adjusting ring 4 is small, and the length dimension of the movable opening 41 can meet the requirement that the fastener 7 moves in the movable opening.

The positioning seat 3 outer wall is the conical surface slope and suits with notch 21 inner wall structure, and is equipped with shock pad 8 between the toper outer wall of bearing frame 5 and the toper inner wall of positioning seat 3, and shock pad 8 can adopt a plurality of evenly distributed's shock pad 8 to constitute, also can adopt the gasket of toper structure.

The center of the inner wall of the bearing seat 5 is convexly provided with a circle of separating ring 51 for separating the two bearings 6, the inner walls of the two ends of the bearing seat 5 are provided with accommodating grooves 52, the accommodating grooves 52 are internally provided with positioning rings 53 which are in threaded connection with the side edges of the bearings 6, the outer side surfaces of the positioning rings 53 are flush with the end surface of the bearing seat 5, and the two positioning rings 53 can respectively lean against the inner walls of the positioning cover 10 and the notch 21, so that looseness can be prevented.

The utility model relates to a damping adjustment method for a screw air compressor, which comprises the following steps: when the shaft end of the female screw 11 vibrates due to abrasion between the bearing seat 5 and the positioning seat 3, the adjusting ring 4 is rotated, the fastener 7 moves in the movable opening 41 relative to the adjusting ring 4, and meanwhile, the adjusting ring 4 is matched with the positioning seat 3 through threads, so that the positioning seat 3 translates under the matching of the guide groove 31 and the guide strip 22, and the positioning seat 3 extrudes the damping gasket 8 through the conical inner wall to eliminate gaps, so that the effects of damping and noise reduction are achieved.

Example 2

In order to solve the problem that a gap is generated between the bearing and the bearing seat 5 after long-term use, as shown in fig. 4, the difference between the embodiment and the embodiment 1 is that the bearing seat 5 may be an elastic bearing seat 9, the elastic bearing seat 9 is composed of a plurality of arc-shaped blocks 91 which are annularly arranged, mounting holes 911 are formed on two side walls of the arc-shaped blocks 91, springs 92 are arranged in the mounting holes 911, two ends of the springs 92 are connected with two adjacent arc-shaped blocks 91, grooves are formed in the same position on the inner walls of the arc-shaped blocks 91, a shock absorption gasket 8 is arranged in each groove, a positioning groove 912 for positioning the bearing 6 is formed by the grooves, the outer ring of the bearing 6 is embedded into the positioning groove 912, the outer walls of the arc-shaped blocks 91 are in an arc-shaped structure and are obliquely arranged, the shape of the outer wall of the elastic bearing seat 9 is matched with the shape of the inner wall of the positioning seat 3, a shock absorption gasket 8 is also arranged on the outer wall of each arc-shaped block 91 for contacting the inner wall of the positioning seat 3, and the front end and the rear end of the elastic bearing seat 9 respectively lean against the inner wall of the positioning cover 10 and the inner wall of the notch 21.

Therefore, when the positioning seat 3 is displaced when the adjusting ring 4 is rotated, the positioning seat 3 and the arc-shaped block 91 of the elastic bearing seat 9 are extruded to eliminate the gap, and meanwhile, the elastic bearing seat 9 can be integrally contracted inwards to reduce the gap between the elastic bearing seat 9 and the bearing, so that the effects of shock absorption and noise reduction can be further achieved.

The present utility model is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present utility model are intended to be included in the scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope of the claims.

Claims

1. The utility model provides a vibration/noise reduction type screw air compressor, includes casing (1), casing (1) rotation is equipped with female screw (11) and male screw (12), and casing (1) one end arch is equipped with axle bed (2), axle bed (2) are hollow structure and are used for the axle head of female screw (11) to run through, and characterized in that, be equipped with notch (21) on axle bed (2) open end inner wall, be provided with positioning seat (3) in notch (21), positioning seat (3) one end imbeds in notch (21) and sliding connection with it, cover is equipped with adjusting ring (4) on positioning seat (3) other end outer wall, threaded connection between adjusting ring (4) inner wall and positioning seat (3) outer wall, at least two arc structure's movable mouth (41) have been seted up along circumference on adjusting ring (4); the inner wall of the positioning seat (3) is obliquely arranged in a conical surface manner, a bearing seat (5) is arranged on the inner side of the positioning seat (3), a bearing (6) is arranged on the inner side of the bearing seat (5), the bearing (6) is sleeved on the shaft end of the female screw (11), a positioning cover (10) for pressing and positioning the bearing seat (5) is arranged at one end of the bearing seat, the other end of the bearing seat (5) is pressed against one end of the notch (21), the edge of the positioning cover (10) is fixedly connected with the shaft seat (2) through at least two fastening pieces (7), and the fastening pieces (7) horizontally penetrate through a movable opening (41) respectively; the outer wall of the positioning seat (3) is inclined in a conical surface and is matched with the inner wall structure of the notch (21), and a shock absorption gasket (8) is arranged between the conical outer wall of the bearing seat (5) and the conical inner wall of the positioning seat (3).

2. The damping and noise-reducing screw air compressor of claim 1, wherein the number of bearings on the inner side of the bearing seat (5) is at least two, a circle of separating rings (51) for separating the two bearings are arranged in a protruding mode on the center of the inner wall of the bearing seat (5), accommodating grooves (52) are formed in the inner walls of the two ends of the bearing seat (5), and positioning rings (53) for positioning the bearings are detachably arranged in the accommodating grooves (52).

3. A screw air compressor with vibration and noise reduction according to claim 2, characterized in that the outer surface of the positioning ring (53) is flush with the end face of the bearing housing (5).

4. The damping and noise-reducing screw air compressor as set forth in claim 1, wherein at least one guide groove (31) is axially provided on an outer wall of the positioning seat (3), and a guide bar (22) matched with the guide groove (31) is provided on an inner wall of the notch (21), and the sliding connection between the positioning seat (3) and the notch (21) is realized by matching the guide groove (31) with the guide bar (22).

5. A screw air compressor with vibration and noise reduction according to claim 1, characterized in that the minimum distance between the positioning cover (10) and the end face of the shaft seat (2) is greater than the thickness of the positioning ring (53).

6. The damping and noise reducing screw air compressor as set forth in claim 1, wherein a ring of anti-slip patterns is provided on the outer wall of the adjusting ring (4).