Pump core with noise reduction function

Abstract

The utility model discloses a pump core with noise reduction function belongs to pump core noise reduction technical field, the utility model discloses a motor, cylinder shell, gear bottom cover and the gear mechanism of installing in the gear bottom cover, the piston is slidably installed in cylinder shell, and the motor drives the piston reciprocating motion in cylinder shell through the gear mechanism, the soundproof cover is integrally extended on the upper side of cylinder shell rear end face and is equipped with, the gear bottom cover is fixedly installed in the lower side of cylinder shell rear end face, and the soundproof cover lower end surface and the gear bottom cover upper end surface matching installation, and the soundproof cover, gear bottom cover and cylinder shell rear end face form the sealed cavity, the utility model discloses the soundproof cover is integrally extended on the upper side of cylinder shell rear end face, and the soundproof cover, gear bottom cover and cylinder shell rear end face form the sealed cavity, realize good noise reduction effect, do not need to increase the soundproof cover additionally, reduce the cost.

Description

Technical Field

[0001] This utility model relates to the field of pump core noise reduction technology, specifically a pump core with noise reduction function. Background Technology

[0002] Currently, air pumps all use a connecting rod piston working principle, with air intake and exhaust channels. During operation, these channels generate some noise. Existing air pumps on the market reduce noise by adding components, such as soundproof covers mounted on the pump mechanism. This reduces noise but increases cost. Therefore, this invention provides a pump mechanism with noise reduction capabilities. Summary of the Invention

[0003] To address the aforementioned technical deficiencies, the purpose of this utility model is to provide a pump core with noise reduction function. A sound insulation cover is integrally extended from the upper side of the rear end face of the cylinder housing. The sound insulation cover, the gear bottom cover, and the rear end face of the cylinder housing form a sealed cavity, achieving a good noise reduction effect without the need for an additional sound insulation cover, thus solving the technical problems mentioned in the background art.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: The present invention provides a pump core with noise reduction function, including: a motor, a cylinder housing, a gear bottom cover, and a gear mechanism installed in the gear bottom cover. A piston is slidably installed in the cylinder housing, and the motor drives the piston to reciprocate within the cylinder housing through the gear mechanism. A sound insulation cover is integrally extended from the upper side of the rear end face of the cylinder housing. The gear bottom cover is fixedly installed on the lower side of the rear end face of the cylinder housing. The lower end face of the sound insulation cover matches the upper end face of the gear bottom cover. The sound insulation cover, the gear bottom cover, and the rear end face of the cylinder housing form a sealed cavity.

[0005] Preferably, the gear bottom cover has front positioning posts on both sides of the front end, and the cylinder housing has rear positioning posts on both sides of the rear end. The front and rear positioning posts are fixedly connected by screws to achieve good and stable installation.

[0006] Preferably, the gear mechanism includes a driven gear disk and a driving gear; the driven gear disk is rotatably mounted on the inner bottom surface of the gear bottom cover, the output shaft of the motor extends into the gear bottom cover and is fixedly connected to the driving gear, the driving gear meshes with the driven gear disk, an eccentric shaft is fixedly mounted on the driven gear disk at an eccentric position, the piston is integrally connected with a piston rod, the piston rod is rotatably connected to the eccentric shaft, and the gear mechanism drives the piston to reciprocate inside the cylinder housing.

[0007] Preferably, the piston is provided with an air inlet that communicates with the inside of the cylinder housing, and the front end of the cylinder housing is provided with an air outlet that communicates with the inside of the cylinder housing, so as to achieve stable and good operation of the cylinder.

[0008] Preferably, the surface of the soundproof cover is provided with a honeycomb panel layer that absorbs noise, thereby improving the noise reduction effect.

[0009] The beneficial effects of this utility model are as follows: 1. The present invention provides an integral soundproof cover extending from the upper side of the rear end face of the cylinder housing. The soundproof cover, the gear bottom cover and the rear end face of the cylinder housing form a sealed cavity, achieving a good noise reduction effect without the need for an additional soundproof cover, thus reducing costs.

[0010] The surface of this soundproof cover is provided with a honeycomb panel layer that absorbs noise, thereby improving the noise reduction effect. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of the structure of a pump core with noise reduction function provided by this utility model.

[0013] Figure 2 for Figure 1 A schematic diagram of the structure without the cylinder housing and soundproof cover installed.

[0014] Figure 3 This is a top view of the cylinder housing and sound insulation cover of this utility model.

[0015] Figure 4 This is a structural schematic diagram of the cylinder housing and sound insulation cover of this utility model from a bottom view.

[0016] Explanation of reference numerals in the attached drawings: 1-Motor, 2-Cylinder housing, 21-Piston, 211-Piston rod, 22-Sound insulation cover, 221-Honeycomb panel, 23-Rear positioning post, 24-Air inlet, 25-Air outlet, 3-Gear bottom cover, 31-Front positioning post, 41-Driven gear disc, 411-Eccentric shaft, 42-Driving gear. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Example 1: like Figures 1 to 4 As shown, this embodiment provides a pump core with noise reduction function, including: a motor 1, a cylinder housing 2, a gear base cover 3, and a gear mechanism installed in the gear base cover 3. A piston 21 is slidably installed in the cylinder housing 2, and the motor 1 drives the piston 21 to reciprocate within the cylinder housing 2 through the gear mechanism. A sound insulation cover 22 is integrally extended from the upper side of the rear end face of the cylinder housing 2. The gear base cover 3 is fixedly installed on the lower side of the rear end face of the cylinder housing 2, and the lower end face of the sound insulation cover 22 matches the upper end face of the gear base cover 3. The sound insulation cover 22, the gear base cover 3, and the rear end face of the cylinder housing 2 form a sealed cavity. In this embodiment, the sound insulation cover 22 is integrally extended from the upper side of the rear end face of the cylinder housing 2, and the sound insulation cover 22, the gear base cover 3, and the rear end face of the cylinder housing 2 form a sealed cavity, achieving a good noise reduction effect without the need for an additional sound insulation cover, thus reducing costs.

[0019] For further details, please refer to Figure 1 As shown, the gear bottom cover 3 has front positioning posts 31 on both sides of the front end, and the cylinder housing 2 has rear positioning posts 23 on both sides of the rear end. The front positioning posts 31 and the rear positioning posts 23 are fixedly connected by screws to achieve good and stable installation.

[0020] For further details, please refer to Figure 2 As shown, the gear mechanism includes a driven gear disk 41 and a driving gear 42; the driven gear disk 41 is rotatably mounted on the inner bottom surface of the gear bottom cover 3, the output shaft of the motor 1 extends into the gear bottom cover 3 and is fixedly connected to the driving gear 42, the driving gear 42 is meshed with the driven gear disk 41, the driven gear disk 41 is fixedly mounted with an eccentric shaft 411 at an eccentric position, the piston 21 is integrally connected with a piston rod 211, and the piston rod 211 is rotatably connected to the eccentric shaft 411; the gear mechanism drives the piston 21 to reciprocate inside the cylinder housing 2.

[0021] For further details, please refer to Figure 3 and Figure 4 As shown, the piston 21 is provided with an air inlet 24 that communicates with the inside of the cylinder housing 2, and the front end of the cylinder housing 2 is provided with an air outlet 25 that communicates with the inside of the cylinder; thus achieving stable and good operation of the cylinder.

[0022] For further details, please refer to Figure 3 and Figure 4 As shown, the surface of the soundproof cover 22 is provided with a honeycomb panel layer 221 for absorbing noise, thereby improving the noise reduction effect.

[0023] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A pump core with noise reduction function, characterized in that, include: The motor (1), cylinder housing (2), gear bottom cover (3) and gear mechanism installed in the gear bottom cover (3) are provided. A piston (21) is slidably installed in the cylinder housing (2). The motor (1) drives the piston (21) to reciprocate in the cylinder housing (2) through the gear mechanism. The cylinder housing (2) has an integrally extended soundproof cover (22) on the upper side of the rear end face. The gear bottom cover (3) is fixedly installed on the lower side of the rear end face of the cylinder housing (2). The lower end face of the soundproof cover (22) is matched and installed with the upper end face of the gear bottom cover (3). The soundproof cover (22), the gear bottom cover (3) and the rear end face of the cylinder housing (2) form a sealed cavity.

2. A pump core with noise reduction function as described in claim 1, characterized in that, The gear bottom cover (3) has front positioning posts (31) on both sides of the front end, and the cylinder housing (2) has rear positioning posts (23) on both sides of the rear end. The front positioning posts (31) and the rear positioning posts (23) are fixedly connected by screws.

3. A pump core with noise reduction function as described in claim 1, characterized in that, The piston (21) is provided with an air inlet (24) that communicates with the inside of the cylinder housing (2), and the front end of the cylinder housing (2) is provided with an air outlet (25) that communicates with the inside of the cylinder housing (2).

4. A pump core with noise reduction function as described in claim 1, characterized in that, The surface of the soundproof cover (22) is provided with a honeycomb panel layer (221) for absorbing noise.

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