Air inlet and outlet structure of air compressor

Abstract

The utility model provides an air inlet and outlet structure of an air compressor, and belongs to the technical field of air compressors. The double-cylinder type air compressor solves the problem that an existing double-cylinder type air compressor is inconvenient to assemble. According to the air inlet and outlet structure of the air compressor, the air compressor comprises a left shell, a right shell, a first top cover and a second top cover, the air inlet and outlet structure of the air compressor comprises an integrally-formed long-plate-shaped valve plate piece, the bottom of one end of the valve plate piece is connected to the top of the left shell, and a first air inlet hole and a first air outlet hole are formed in the end of the valve plate piece in a penetrating mode in the vertical direction; the bottom of the other end of the valve plate piece is connected to the top of the right shell, a second air inlet hole and a second air outlet hole are formed in the other end of the valve plate piece in the vertical direction in a penetrating mode, and a first top cover and a second top cover are fixed to the tops of the two ends of the valve plate piece correspondingly. A first communicating hole communicating with the first air inlet hole and the second air inlet hole and a second communicating hole communicating with the first air outlet hole and the second air outlet hole are formed in the middle of the valve plate piece. The air inlet and outlet structure of the air compressor has the advantage of being convenient to assemble.

Description

TECHNICAL FIELD

[0001] The utility model belongs to air compressor technical field relates to an air compressor's air inlet and outlet structure. BACKGROUND

[0002] The compressor is also known as air compressor, which is a device for converting mechanical energy into gas pressure and is widely used in chemical industry, machinery, medical treatment, textile, electric power, automobile and military industry. Among them, the piston air compressor is the most widely used air compressor. The air compressor mainly includes crankshaft, piston, pressure plate and valve plate. The pressure plate is fixed at the end of the piston and drives the piston to reciprocate through the rotation of the crankshaft to compress the air between the pressure plate and the valve plate. The valve plate is an important part connecting the piston cylinder and the outside. The valve plate has an air inlet hole and an air outlet hole. The top of the valve plate is fixed with a top cover having an air inlet and an air outlet.

[0003] For example, a kind of air compressor motor pump head and air compressor are designed, and Chinese patent is applied for, its application number is: 202211696230.7;Its publication number is: CN116191748A;The air compressor motor pump head, including cylinder, motor, left box and right box, the motor is installed between the left box and the right box, and the left box and the right box are connected by draw bar;One cylinder seat is arranged on the side wall of the left box and the right box, the cylinder is fixed in the cylinder seat, the output shaft of the motor is inserted into the crank chamber of the left box and the right box respectively, the motor is connected with corresponding cylinder through crank mechanism, one wind deflector is arranged on the side of the left box relative to the motor and the side of the right box relative to the motor, and a fan is arranged in each wind deflector, the fan is connected with the output shaft of the motor.

[0004] The air compressor is a double-cylinder air compressor, with a motor in the middle and left and right boxes on both sides. The output shafts of the motor are inserted into the left and right boxes to drive them simultaneously. The left and right boxes are symmetrical and have the same structure. Two pipes are connected between the tops of the left and right boxes to realize internal communication.

[0005] However, during actual processing and assembly, the valve plate and top cover in the left box need to be connected and sealed correspondingly, and the valve plate and top cover in the right box also need to be connected and sealed correspondingly. Then, two pipes need to be connected between the top covers of the left and right boxes to realize communication between the top of the left box and the top of the right box. The overall structure has many components, high air tightness requirement and inconvenient assembly. UTILITY MODEL CONTENTS

[0006] The utility model aims at the above problems existing in the prior art and provides an air compressor air inlet and outlet structure to solve the assembly inconvenience of the existing double-cylinder air compressor.

[0007] The utility model discloses a purpose can be realized through the following technical scheme:

[0008] The air inlet and outlet structure of the air compressor includes an integrally-formed valve plate piece in the shape of a long plate, one end of the valve plate piece is connected to the top of the left casing, and the end of the valve plate piece is provided with an air inlet hole one and an air outlet hole one penetratingly formed in the vertical direction and communicating with the inner cavity of the left casing, the other end of the valve plate piece is connected to the top of the right casing, and the other end of the valve plate piece is provided with an air inlet hole two and an air outlet hole two penetratingly formed in the vertical direction and communicating with the inner cavity of the right casing, the top cover one and the top cover two are respectively fixed to the top of the two ends of the valve plate piece, the top cover one is provided with an air inlet one communicating with the air inlet hole one and an air outlet one communicating with the air outlet hole one, the top cover two is provided with an air inlet two communicating with the air inlet hole two and an air outlet two communicating with the air outlet hole two, and the middle part of the valve plate piece is provided with a communication hole one communicating the air inlet hole one and the air inlet hole two and a communication hole two communicating the air outlet hole one and the air outlet hole two.

[0009] The air compressor in the air inlet and outlet structure of the air compressor includes a motor and left and right casings connected to the two sides of the motor, and piston assemblies are arranged in the left and right casings, which are part of the prior art and will not be described herein. When the air inlet and outlet structure of the air compressor works, air can enter the inner cavity of the left casing through the air inlet one and the air inlet hole one in sequence, and the gas in the left casing can be discharged to the outside through the air outlet hole one and the air outlet one in sequence. Meanwhile, at the right casing, air can enter the inner cavity of the right casing through the air inlet two and the air inlet hole two in sequence, and the gas in the right casing can be discharged to the outside through the air outlet hole two and the air outlet two in sequence to ensure normal work, and the top cover one and the top cover two on the top of the left and right casings are connected to each other through the communication hole one and the communication hole two. Therefore, the air inlet and outlet structure of the air compressor uses an integrally-formed valve plate piece to realize the functions of two independent valve plates, two pipelines and the pipeline interfaces on the two top covers in the existing air compressor, reduces the component composition, and further reduces the assembly process, facilitating assembly, and the air tightness of the integrally-formed valve plate piece is better than that of the connected pipelines.

[0010] In the air inlet and outlet structure of the air compressor, the top surface position of the middle part of the valve plate piece is not higher than the top surface positions of the two ends of the valve plate piece. In order to provide sufficient stroke for the internal piston, the height of the left and right casings is often higher than the height of the motor, that is, there is a spacing between the top of the left and right casings, and the middle part of the integrally-formed valve plate piece does not protrude upward, which can make full use of the spacing, making the structure more compact, and the top cover one and the top cover two without connecting pipelines can also be adaptively reduced in height, making the structure of the air compressor using the air inlet and outlet structure of the air compressor more compact and smaller in size.

[0011] In the air inlet and outlet structure of the air compressor, the top cover one has a vertically arranged plate-shaped partition one inside, the bottom surface of the partition one abuts against the top surface of the valve plate and forms a seal, and the air inlet hole one and the air outlet hole one are respectively communicated to both sides of the partition one. The top cover one is divided into two independent cavities by the partition one to supply air inlet and air outlet respectively, avoiding mutual influence.

[0012] In the air inlet and outlet structure of the air compressor, the top cover two has a vertically arranged plate-shaped partition two inside, the bottom surface of the partition two abuts against the top surface of the valve plate and forms a seal, and the air inlet hole two and the air outlet hole two are respectively communicated to both sides of the partition two. Similarly, the air inlet and air outlet are also separated from each other at the top cover two.

[0013] In the air inlet and outlet structure of the air compressor, the bottom of the middle part of the valve plate has two downwardly protruding columnar communication parts, both of which are horizontally arranged, the communication hole one and the communication hole two are respectively arranged in the two communication parts, and both ends of the communication hole one and the communication hole two are arranged to the top surface of the valve plate. The communication hole one and the communication hole two are arranged in the bottom of the valve plate, so that the communication position is lowered, the space is fully utilized, and the structure is more compact.

[0014] In the air inlet and outlet structure of the air compressor, the two communication parts respectively have a communication hole one and a spare hole one communicated with the outside, and a communication hole two and a spare hole two communicated with the outside. The arrangement of the spare hole one and the spare hole two provides preparation for different air inlet and outlet requirements, and the plug can be used for plugging when not in use.

[0015] In the air inlet and outlet structure of the air compressor, both sides of the two ends of the valve plate have downwardly folded flanges. The arrangement of the flanges on both sides of the two ends of the valve plate not only facilitates the positioning and connection of the valve plate during assembly, but also improves the strength of the valve plate.

[0016] Compared with the prior art, the air inlet and outlet structure of the air compressor utilizes an integrally formed valve plate to realize the functions of two independent valve plates, two pipelines and pipeline interfaces on two top covers in the prior art air compressor, reduces the component composition, thereby reducing the assembly process, facilitates assembly, and the air tightness of the integrated valve plate is better than that of the additionally connected pipeline. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a sectional view of the air inlet hole of the air compressor with the air inlet and outlet structure of the air compressor.

[0018] Figure 2 is a structure diagram of the valve plate in the air inlet and outlet structure of the air compressor.

[0019] Figure 3 This is a schematic diagram of the valve plate in the air inlet and outlet structure of this air compressor from another perspective.

[0020] Figure 4 This is a cross-sectional view of the air outlet of an air compressor with its inlet and outlet structure.

[0021] In the diagram: 1. Left housing; 2. Right housing; 3. Top cover 1; 31. Air inlet 1; 32. Air outlet 1; 33. Partition 1; 4. Top cover 2; 41. Air inlet 2; 42. Air outlet 2; 43. Partition 2; 5. Valve plate; 51. Air inlet 1; 52. Air outlet 1; 53. Air inlet 2; 54. Air outlet 2; 55. Connecting hole 1; 56. Connecting hole 2; 57. Connecting part; 58. Spare hole 1; 59. Spare hole 2; 510. Flanged edge. Detailed Implementation

[0022] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0023] For ease of explanation, the specific technical solution of this utility model is described with reference to the orientation shown in the accompanying drawings.

[0024] like Figure 1 and Figure 4 As shown, the air compressor includes a motor, a left housing 1 and a right housing 2 connected to the left and right sides of the motor respectively, and a top cover 3 and a top cover 4 respectively disposed above the left housing 1 and the right housing 2. Both the left housing 1 and the right housing 2 contain existing components such as cams and piston assemblies.

[0025] like Figure 2 and Figure 3 As shown, the air compressor's inlet and outlet structure includes an integrally formed, elongated valve plate 5. The bottom of the left end of the valve plate 5 is sealed to the top of the left housing 1, and the top cover 3 is sealed to the top of the left end of the valve plate 5. The left end of the valve plate 5 has a vertically extending inlet hole 51 and an outlet hole 52, both communicating with the inner cavity of the left housing 1. The top cover 3 has a vertically arranged, plate-shaped partition 33. The bottom surface of the partition 33 abuts against the top surface of the valve plate 5 and forms a seal, thus dividing the top cover 3 into two independent cavities. The inlet hole 51 and outlet hole 52 on the valve plate 5 are respectively connected to both sides of the partition 33, i.e., respectively connected to the two independent cavities. The side of the top cover 3 has an inlet port 31 communicating with the inlet hole 51 and an outlet port 32 communicating with the outlet hole 52.

[0026] Similarly, the valve plate 5 is sealingly connected to the top of the right shell 2 at the right end, and the top cover 4 is sealingly fixed to the top of the right end of the valve plate 5. The right end of the valve plate 5 is vertically provided with an air inlet hole 53 and an air outlet hole 54, both of which are in communication with the inner cavity of the right shell 2. The top cover 4 has a vertically arranged plate-shaped partition 43, the bottom surface of the partition 43 abuts against the top surface of the valve plate 5 and forms a seal, and the air inlet hole 53 and the air outlet hole 54 are respectively communicated to both sides of the partition 43. The top cover 4 is provided with an air inlet 41 communicated with the air inlet hole 53 and an air outlet 42 communicated with the air outlet hole 54.

[0027] The top surface of the middle part of the valve plate 5 is not higher than the top surface of the two ends of the valve plate 5. The bottom of the middle part of the valve plate 5 has two downwardly protruding cylindrical communication parts 57, both of which are horizontally arranged and the axial directions of both are arranged in the left-right direction. The communication part 57 is respectively provided with a communication hole 55 communicated with the air inlet hole 51 and the air inlet hole 53 and a communication hole 56 communicated with the air outlet hole 51 and the air outlet hole 53, and both ends of the communication hole 55 and the communication hole 56 are provided with end ports opened to the top surface of the valve plate 5. In this embodiment, the two communication parts 57 are respectively provided with a standby hole 58 communicated with the communication hole 55 and the outside and a standby hole 59 communicated with the communication hole 56 and the outside along the axial direction at the end of the right shell 2, and the plug is fixed at the standby hole 58 and the standby hole 59 by a tight fit. Both sides of the two ends of the valve plate 5 are provided with a downwardly folded flange 510.

[0028] When the air inlet and outlet structure of the air compressor works, the air inlet can enter the inner cavity of the left shell 1 in sequence through the air inlet 31 and the air inlet hole 51, and the gas in the left shell 1 can be discharged to the outside in sequence through the air outlet hole 52 and the air outlet 32. At the same time, at the right shell 2, the air inlet can enter the inner cavity of the right shell 2 in sequence through the air inlet 42 and the air inlet hole 53, and the gas in the right shell 2 can be discharged to the outside in sequence through the air outlet hole 54 and the air outlet 42, so as to ensure normal work, and the top cover 1 and the top cover 4 at the top of the left shell 1 and the right shell 2 are communicated with each other through the communication hole 55 and the communication hole 56.

[0029] The specific embodiments described herein are merely illustrative of the spirit of the present application. Those skilled in the art of the present application can make various modifications or supplements to the described specific embodiments or use similar ways to replace them, without deviating from the spirit of the present application or exceeding the scope defined by the appended claims.

Claims

1. An air compressor's inlet and outlet structure, the air compressor comprising a left housing (1), a right housing (2), a top cover one (3), and a top cover two (4), characterized in that, The air compressor's air inlet and outlet structure includes an integrally formed, elongated valve plate (5). The bottom of one end of the valve plate (5) is connected to the top of the left housing (1), and the valve plate (5) has an air inlet hole (51) and an air outlet hole (52) that are both connected to the inner cavity of the left housing (1) through the vertical direction. The bottom of the other end of the valve plate (5) is connected to the top of the right housing (2), and the other end of the valve plate (5) has an air inlet hole (53) and an air outlet hole (54) that are both connected to the inner cavity of the right housing (2) through the vertical direction. The top cover (3) and the top cover (4) are also included. The top of the valve plate (5) is fixed at both ends. The top cover (3) is provided with an air inlet (31) that connects to the air inlet (51) and an air outlet (32) that connects to the air outlet (52). The top cover (4) is provided with an air inlet (41) that connects to the air inlet (53) and an air outlet (42) that connects to the air outlet (54). The valve plate (5) is provided with a connecting hole (55) that connects the air inlet (51) and the air inlet (53) and a connecting hole (56) that connects the air outlet (52) and the air outlet (54).

2. The air inlet and outlet structure of the air compressor according to claim 1, characterized in that, The top surface of the middle part of the valve plate (5) is not higher than the top surfaces of both ends of the valve plate (5).

3. The air inlet and outlet structure of the air compressor according to claim 1 or 2, characterized in that, The top cover (3) has a vertically arranged plate-shaped partition (33). The bottom surface of the partition (33) abuts against the top surface of the valve plate (5) and forms a seal. The air inlet (51) and the air outlet (52) are respectively connected to the two sides of the partition (33).

4. The air inlet and outlet structure of the air compressor according to claim 1 or 2, characterized in that, The top cover (4) has a vertically arranged plate-shaped partition (43) inside. The bottom surface of the partition (43) abuts against the top surface of the valve plate (5) and forms a seal. The air inlet (53) and the air outlet (54) are respectively connected to the two sides of the partition (43).

5. The air inlet and outlet structure of the air compressor according to claim 1 or 2, characterized in that, The valve plate (5) has two downward protruding columnar connecting parts (57) at the bottom of the middle part. Both connecting parts (57) are horizontally arranged. The first connecting hole (55) and the second connecting hole (56) are respectively opened in the two connecting parts (57), and the two ends of the first connecting hole (55) and the second connecting hole (56) are opened to the top surface of the valve plate (5).

6. The air inlet and outlet structure of the air compressor according to claim 5, characterized in that, The two connecting parts (57) are respectively provided with a connecting hole 1 (55) and a spare hole 1 (58) connecting the outside and a connecting hole 2 (59) connecting the two connecting parts (57) and the outside at the end facing the right shell (2) along the axial direction.

7. The air inlet and outlet structure of the air compressor according to claim 1 or 2, characterized in that, Both ends of the valve plate (5) have downward-folded flanges (510).

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