Mute oil-free air compression pump with resonance suppression function

Abstract

The utility model discloses a noiseless oil-free air compression pump with resonance suppression, which comprises a motor, a connecting seat, a piston, a cylinder sleeve, a rubber sleeve and a cylinder cover, the connecting seat is arranged at the front end of the motor, a mounting sleeve corresponding to the rubber sleeve is arranged on the connecting seat, the rubber sleeve is arranged in the mounting sleeve, the cylinder sleeve is concentrically arranged in the rubber sleeve, and the piston is arranged in the cylinder sleeve. The piston is arranged in the cylinder sleeve, the cylinder cover is arranged at the top of the mounting sleeve, positioning rings are arranged at the top and the bottom of the inner wall of the rubber sleeve respectively, positioning convex ribs extending into the positioning rings are arranged on the outer wall of the cylinder sleeve, and an annular cavity located between the upper positioning ring and the lower positioning ring is formed between the inner wall of the rubber sleeve and the outer wall of the cylinder sleeve. According to the mute oil-free air compression pump with the resonance suppression function, cylinder knocking sound and vibration generated when the piston moves are reduced, the problem of resonance is reduced, and the mute effect is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to air compression pump technical field especially relates to a resonance inhibition's mute oilless air compression pump. BACKGROUND

[0002] Oxygen generator needs air compression pump to provide compressed air in the working process, in order to avoid the pollution of lubricating oil to air, needs to adopt oilless air compression pump.

[0003] Oilless air compression pump cannot form normal lubricating oil film between piston and cylinder wall in the operation process, thereby produces the knocking sound, and the resonance problem of air compression pump is caused, increases the system noise of oxygen generator, needs improvement. UTILITY MODEL CONTENTS

[0004] The utility model discloses a kind of resonance inhibition's mute oilless air compression pump, inhibits resonance problem, improves mute effect.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] A kind of resonance inhibition's mute oilless air compression pump, comprising: motor, connecting seat, piston, cylinder sleeve, rubber sleeve and cylinder cover, the connecting seat is set in the front end of motor, the connecting seat is provided with the mounting sleeve corresponding with rubber sleeve, the rubber sleeve is set in mounting sleeve, the cylinder sleeve is concentrically set in rubber sleeve, the piston is set in cylinder sleeve, the cylinder cover is set in the top of mounting sleeve, the top and bottom of rubber sleeve inner wall are respectively provided with positioning ring, the cylinder sleeve outer wall is provided with positioning boss extending into positioning ring, annular cavity between rubber sleeve inner wall and cylinder sleeve outer wall is formed between the upper and lower two positioning rings.

[0007] Among them, the output end of the motor is provided with crankshaft in connecting seat, connecting rod is provided between the crankshaft and piston.

[0008] Among them, the piston is concentrically provided with skin bowl with edge and cylinder sleeve inner wall contact.

[0009] Among them, the connecting seat and mounting sleeve adopt integrated structure.

[0010] Among them, a circle of limit ring is provided in mounting sleeve and located at the bottom of rubber sleeve, mounting sleeve is provided with snap spring above the top of rubber sleeve.

[0011] Among them, the cylinder sleeve and positioning boss adopt integrated structure.

[0012] Among them, the rubber sleeve and positioning ring adopt integrated silica gel structure.

[0013] Among them, the positioning ring is provided with embedding groove corresponding with positioning boss in concave.

[0014] The utility model discloses a beneficial effect: a resonance suppression's mute oilless air compression pump, the flexible limitation of cylinder sleeve is positioned ring of rubber bushing, make cylinder sleeve follow the slight oblique in the process of piston movement, reduce the knock cylinder sound and vibration, reduce the problem of causing resonance, and utilize the cooperation of positioning ring, annular cavity and rubber bushing, reduce the transmission of cylinder sleeve vibration to mounting sleeve and connecting seat, further reduce vibration and noise, improve mute effect. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the structure schematic diagram of the utility model;

[0016] Figure 2 It is Figure 1 The structure schematic diagram of cylinder sleeve and rubber bushing. DETAILED DESCRIPTION

[0017] The technical scheme of the utility model will be further explained below in combination with Figures 1-2 The technical scheme of the utility model will be further explained below in combination with

[0018] As Figure 1 The resonance suppression's mute oilless air compression pump shown in the figure, it include: motor 1, connecting seat 2, piston 5, cylinder sleeve 4, rubber bushing 9 and cylinder cover 3, connecting seat 2 set up in the front end of motor 1, can adopt screw to be fixed, assemble convenient.

[0019] The mounting sleeve 7 corresponding with rubber bushing 9 is arranged on connecting seat 2, in this embodiment, connecting seat 2 and mounting sleeve 7 adopt integrated structure, can adopt integrated aluminum alloy structure, and the structure strength is high, and the dead weight is light.

[0020] The rubber bushing 9 is arranged in the mounting sleeve 7, in this embodiment, a circle of limit ring 10 is arranged in the mounting sleeve 7 and located at the bottom of rubber bushing 9, and the mounting sleeve is provided with a snap spring 8 above the top of rubber bushing 9, so as to limit the up and down of rubber bushing 9, and the axial stability of rubber bushing 9 is improved.

[0021] As Figure 2 The cylinder sleeve 4 is concentrically arranged in rubber bushing 9, and the inner wall top and bottom of rubber bushing 9 are respectively provided with a positioning ring 14, and the outer wall of cylinder sleeve 4 is provided with a positioning convex rib 15 extending into the positioning ring 14, in this embodiment, the cylinder sleeve 4 and the positioning convex rib 15 adopt an integrated steel structure, which is high in strength and good in wear resistance.

[0022] In addition, the embedding groove 13 corresponding with the positioning convex rib 15 is arranged in the concave of the positioning ring 14, which is convenient to assemble and tightly cooperate, and glue can also be applied in the embedding groove 13 to improve the stability of the positioning convex rib 15 in the embedding groove 13 and avoid disengagement.

[0023] In this embodiment, an annular cavity 12 is formed between the inner wall of the rubber sleeve 9 and the outer wall of the cylinder liner 4, located between the upper and lower positioning rings 14, reducing the outward transmission of vibration and noise. The rubber sleeve 9 and the positioning rings 14 adopt an integrated silicone structure, which has a certain degree of elasticity and can also reduce the transmission of vibration.

[0024] like Figure 1 As shown, the piston 5 is disposed in the cylinder liner 4, and the output end of the motor 1 is provided with a crankshaft located in the connecting seat 2. A connecting rod 11 is provided between the crankshaft and the piston 5 to realize the reciprocating drive of the piston 5 in the cylinder liner 4. Since the cylinder liner 4 is flexibly supported and constrained by the positioning ring 14 of the rubber sleeve 9, the cylinder liner 4 tilts slightly following the movement of the piston 5, reducing knocking noise and vibration, thereby reducing the problem of resonance.

[0025] The cylinder head 3 is placed on top of the mounting sleeve 7 to seal the top of the mounting sleeve 7. The cylinder head 3 can be fixed to the mounting sleeve 7 with screws, resulting in a stable structure. The cylinder head 3 is equipped with an air inlet and an air outlet, and one-way valves are installed in opposite directions in the air inlet and air outlet, allowing for switching between air intake and exhaust during the movement of the piston 5.

[0026] like Figure 1 As shown, a piston cup 6 is concentrically arranged on the piston 5, with its edge contacting the inner wall of the cylinder liner 4. The piston cup 6 flexibly contacts the inner wall of the cylinder liner 4 as the piston 5 moves, avoiding hard contact between the piston 5 and the inner wall of the cylinder liner 4, and further reducing vibration problems. The piston cup 6 is fixed to the piston 5 by a pressure ring and screws, which is convenient for disassembly, allowing the piston cup 6 to be removed and replaced individually, reducing maintenance costs.

[0027] The above description is only a preferred embodiment of this utility model. For those skilled in the art, there will be changes in the specific implementation method and application scope based on the idea of ​​this utility model. The content of this specification should not be construed as a limitation of this utility model.

Claims

1. A resonantly suppressed silent oil-free air compression pump characterized by, Include: Motor, connecting seat, piston, cylinder sleeve, rubber sleeve and cylinder cover, the connecting seat is arranged at the front end of the motor, the connecting seat is provided with a mounting sleeve corresponding to the rubber sleeve, the rubber sleeve is arranged in the mounting sleeve, the cylinder sleeve is arranged concentrically in the rubber sleeve, the piston is arranged in the cylinder sleeve, the cylinder cover is arranged at the top of the mounting sleeve, the inner wall of the rubber sleeve is provided with a positioning ring at the top and the bottom respectively, the outer wall of the cylinder sleeve is provided with a positioning convex rib extending into the positioning ring, the annular cavity between the inner wall of the rubber sleeve and the outer wall of the cylinder sleeve is located between the upper and lower positioning rings.

2. The resonantly-inhibited, silent, oil-free air compression pump of claim 1, wherein, The output end of the motor is provided with a crankshaft located in the connecting seat, and a connecting rod is arranged between the crankshaft and the piston.

3. The resonantly-inhibited, silent, oil-free air compression pump of claim 1, wherein, The piston is provided with a skin cup concentrically arranged with the edge in contact with the inner wall of the cylinder sleeve.

4. The resonantly-inhibited, silent, oil-free air compression pump of claim 1, wherein, The connecting seat and the mounting sleeve adopt an integrated structure.

5. The resonantly-inhibited, silent, oil-free air compression pump of claim 1, wherein, A limiting ring is arranged in the mounting sleeve at the bottom of the rubber sleeve, and a clamping spring is arranged in the mounting sleeve above the top of the rubber sleeve.

6. The resonantly-inhibited, silent, oil-free air compression pump of claim 1, wherein, The cylinder sleeve and the positioning convex rib adopt an integrated structure.

7. The resonantly-inhibited, silent, oil-free air compression pump of claim 1, wherein, The rubber sleeve and the positioning ring adopt an integrated silica gel structure.

8. The resonantly-inhibited silent oil-free air compression pump of claim 1, wherein, The positioning ring is provided with an embedded groove corresponding to the positioning convex rib.

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