CN221120315U

CN221120315U - Low-noise oilless engine

Info

Publication number: CN221120315U
Application number: CN202323226910.5U
Authority: CN
Inventors: 滕万能; 刘崇彬
Original assignee: Zhejiang Luodi M&e Technology Co ltd
Current assignee: Zhejiang Luodi M&e Technology Co ltd
Priority date: 2023-11-29
Filing date: 2023-11-29
Publication date: 2024-06-11
Anticipated expiration: 2033-11-29

Abstract

The utility model provides a low-noise oil-free machine, and belongs to the technical field of air compression equipment. It has solved the great problem of oilless engine noise among the prior art. The utility model comprises a motor, a crank case, side end covers, cylinder covers and air inlet components, wherein the number of the crank case and the side end covers is two, the crank case and the side end covers are horizontally and oppositely arranged on two sides of the motor, the number of the cylinder covers is two, the air inlet components are horizontally and oppositely arranged on the top end of the crank case, the air inlet components are arranged between the two cylinder covers, the air inlet components comprise end covers, a box body, a speed regulator, a protective cover, a protective cylinder and a curved air inlet pipe, the front side of the box body is provided with a through air inlet, the two sides of the box body are provided with straight air pipes which are connected with the cylinder covers, the straight air pipes extend into the box body and penetrate through the protective cylinder, the end covers are arranged on the top end covers of the box body, the speed regulator is arranged between the protective cover and the end covers, the protective cover is fixed on the upper end of the protective cylinder, and the curved air inlet pipe is arranged in the protective cylinder and connected with the air inlet. The utility model has the advantages of low noise and long service life.

Description

Low-noise oilless engine

Technical Field

The utility model belongs to the technical field of air compression equipment, and relates to a low-noise oil-free machine.

Background

The oil-free machine is short for oil-free air compressor, and the core of the oil-free machine is a superior two-stage compression host. The rotor is finished by twenty procedures, so that the rotor line type achieves incomparable accuracy and durability. The high-quality bearing and the precise gear are arranged in the rotor to ensure the coaxiality of the rotor, so that the rotor is matched accurately, and long-term efficient and reliable operation is kept.

The Chinese patent with the publication number of CN207261220U discloses a high-power oil-free machine, which comprises an air storage tank, wherein the air storage tank is respectively communicated with a first air compressor, a second air compressor and a third air compressor, two ends of the air storage tank are respectively provided with a pressure switch and an electric cabinet, and the first air compressor, the second air compressor and the third air compressor are arranged between the pressure switch and the electric cabinet in parallel; the electric cabinet control circuit comprises a direct current voltage stabilizing module and an alternating current protection module which are connected with an external power supply, wherein the direct current voltage stabilizing module is respectively and electrically connected with a direct current loop module, a delay module I and a delay module II, the pressure switch is respectively and communicatively connected with the direct current loop module, the delay module I and the delay module II, the alternating current protection module is respectively and electrically connected with an air compressor I, an air compressor II and an air compressor III, the direct current loop module is in communication connection with the air compressor I, the delay module I is in communication connection with the air compressor, and the delay module II is in communication connection with the air compressor. The utility model has the advantage of high power, but noise can be relatively large due to the fact that the noise reduction device is not arranged in the using process.

Disclosure of utility model

The utility model aims to solve the problems in the prior art and provide a low-noise oil-free machine.

The aim of the utility model can be achieved by the following technical scheme: the utility model provides a low noise oilless machine, includes motor, crankcase, side end cover, cylinder cap, air inlet subassembly, the quantity of crankcase and side end cover is two and the both sides of level opposition installation motor, the quantity of cylinder cap is two and the level opposition installation crankcase top, air inlet subassembly installs between two cylinder caps, air inlet subassembly includes end cover, box body, speed regulator, visor, protection section of thick bamboo, curved intake pipe, the air inlet that link up has been seted up to the box body front side, the box body both sides are provided with straight trachea and cylinder cap and link to each other, straight trachea stretches into the box body and link to each other the protection section of thick bamboo, the end cover is installed on the box body top, the speed regulator is installed between visor and end cover, the visor is fixed in protection section of thick bamboo upper end, curved intake pipe is placed in the protection section of thick bamboo and is connected the air inlet.

In the low-noise oil-free machine, a filter element is arranged at the air inlet, and a magnet is arranged in the filter element.

In the low-noise oil-free machine, the inner side of the cylinder cover is provided with the opening and is fixedly provided with the air pipe, and the straight air pipe is obliquely and diagonally arranged and sleeved outside the air pipe and is fixedly arranged.

In the low-noise oil-free machine, the cylinder cover and the end cover are both provided with a plurality of cooling fins.

In the low-noise oil-free machine, the bottom of the crankcase is welded with the balance plate, and the bottom surface of the balance plate is completely stuck to the ground.

Compared with the prior art, the utility model has the following beneficial effects: 1. by arranging the curved air pipe, the air inlet stroke is increased, so that the effect of eliminating sound can be achieved, and the noise reduction effect is achieved; 2. the speed regulator is arranged in the air inlet assembly, so that the air inlet size is regulated according to the use requirement, and the noise is low at low power; 3. the magnet and the filter element are arranged at the air inlet of the box body, so that the filtering effect can be better achieved, and the service life is prolonged; 4. the balance plate is welded below the crankcase, so that the utility model can not generate noise due to vibration when in use.

Drawings

FIG. 1 is a schematic view of the mounting structure of the present utility model;

FIG. 2 is a schematic view of the structure of the present utility model without an air intake assembly;

FIG. 3 is a schematic view of an exploded view of the air intake assembly;

Fig. 4 is an assembled top view of the curved air intake pipe.

In the figure: 1. a motor; 2. a crankcase; 21. a balance plate; 3. a side end cap; 4. a cylinder cover; 41. an air pipe; 5. an air intake assembly; 51. an end cap; 52. a case body; 53. a speed governor; 54. a protective cover; 55. a protective cylinder; 56. a curved air inlet pipe; 57. a straight air pipe; 58. an air inlet; 59. a filter element; 6. a heat sink.

Detailed Description

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 3, the present utility model includes a motor 1, a crank case 2, side covers 3, cylinder heads 4, and an intake assembly 5, the crank case 2 and the side covers 3 are two in number and are horizontally installed on both sides of the motor 1 in opposition, a balance plate 21 is fixed under the crank case 2 by welding, the balance plate 21 can support and maintain the balance of the embodiment as a whole, the cylinder heads 4 are two in number and are installed on the top ends of the crank case 2, and the intake assembly 5 is installed between the two cylinder heads 4.

As shown in fig. 3, the air intake assembly 5 includes an end cover 51, a box body 52, a speed regulator 53, a protective cover 54, a protective cylinder 55, and a curved air intake pipe 56, wherein a through air intake 58 is provided at the front side of the box body 52, two sides of the box body 52 are provided with straight air pipes 57 connected with the cylinder cover 4, the straight air pipes 57 extend into the box body 52 and penetrate through the protective cylinder 55, the end cover 51 is mounted at the top end of the box body 52, the speed regulator 53 is mounted between the protective cover 54 and the end cover 51, the protective cover 54 is fixed at the upper end of the protective cylinder 55, the curved air intake pipe 56 is placed in the protective cylinder 55 and connected with the air intake 58, a filter element 59 is provided inside the air intake 58, and the filter element 59 is internally provided with magnets, so that the air taken in can be effectively filtered.

Further, as shown in fig. 1 and 2, the cylinder cover 4 is provided with an opening and is fixed with an air pipe 41, a straight air pipe 57 is obliquely and diagonally sleeved outside the air pipe 41 and is fixed, and the air inlet assembly 5 and the cylinder cover 4 are fixedly connected through the connection of the straight air pipe 57 and the air pipe 41.

Further, as shown in fig. 1, the heat dissipation fins 6 are disposed on the cylinder cover 4 and the end cover 51, and the heat dissipation fins 6 increase the contact area between the cylinder cover 4 and the end cover 51 and the air, so as to enhance the heat dissipation of the present embodiment.

The working principle of the utility model is as follows: the motor 1 is started to drive the air inlet assembly 5 to operate, and when air starts to enter the crankcase 2 from the air inlet 58 and passes through the curved air inlet pipe 56, the noise is reduced due to the longer stroke of the curved air inlet pipe 56, and the air enters the cylinder in the crankcase 2 from the straight air pipe 57 and the air pipe 41 to realize the oil-free operation.

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

1. The utility model provides a low noise oilless machine, includes motor (1), crankcase (2), side end cover (3), cylinder cap (4), subassembly (5) of admitting air, the quantity of crankcase (2) and side end cover (3) is two and the both sides of horizontally opposed installation motor (1), the quantity of cylinder cap (4) is two and horizontally opposed installation crankcase (2) top, subassembly (5) of admitting air are installed between two cylinder caps (4), its characterized in that: the utility model provides an air inlet assembly (5) is including end cover (51), box body (52), speed regulator (53), visor (54), protection cylinder (55), bent intake pipe (56), air inlet (58) that link up have been seted up to box body (52) front side, box body (52) both sides are provided with straight trachea (57) and link to each other with cylinder cap (4), straight trachea (57) stretch into box body (52) and link to each other protection cylinder (55), end cover (51) are installed on box body (52) top, speed regulator (53) are installed between visor (54) and end cover (51), visor (54) are fixed in protection cylinder (55) upper end, bent intake pipe (56) are placed in protection cylinder (55) and are connected air inlet (58).

2. A low noise, oil free machine according to claim 1, wherein: a filter element (59) is arranged at the air inlet (58), and a magnet is arranged in the filter element (59).

3. A low noise, oil free machine according to claim 1, wherein: the inner side of the cylinder cover (4) is provided with an opening and is fixedly provided with an air pipe (41), and the straight air pipe (57) is obliquely and diagonally arranged and sleeved outside the air pipe (41) and is fixedly arranged.

4. A low noise, oil free machine according to claim 1, wherein: and a plurality of cooling fins (6) are arranged on the cylinder cover (4) and the end cover (51).

5. A low noise, oil free machine according to claim 1, wherein: the bottom of the crankcase (2) is welded with a balance plate (21), and the bottom surface of the balance plate (21) is completely stuck to the ground.