Split type multi-cylinder air compressor shell

Abstract

The utility model provides a split type multi-cylinder air compressor shell, and belongs to the technical field of air compressor shells. The problem that the interior of a crankcase of an existing multi-cylinder air compressor is inconvenient to maintain is solved. The split type multi-cylinder air compressor shell comprises a motor shell, a crankcase body and a crankcase cover, the crankcase cover and the crankcase body are fixedly connected and jointly arranged at the two ends of the motor shell in a sleeving mode. A box body connecting cylinder is formed on the front side of the crankshaft box body, a partition layer is formed at the tail end of the box body connecting cylinder, a connecting support is integrally formed between the bottom of the air cylinder column and the outer edge of the partition layer, and a box body connecting hole is formed in the side wall of the connecting support. Piston through holes corresponding to the air cylinder columns are formed in the top side wall and the bottom side wall of the crank case cover, and case cover connecting holes corresponding to the case body connecting holes are formed in the other two side walls of the crank case cover. The split type crankcase has the advantages that a crankshaft piston structure and a motor stator and rotor structure can be conveniently and respectively overhauled through the split type design of the crankcase, maintenance is more targeted, and long-term use and maintenance of the air compressor are facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of air compressor casings, and in particular relates to a split multi-cylinder air compressor casing. Background Art

[0002] A multi-cylinder air compressor is a device used to provide high-pressure, high-flow compressed air. It has higher compression efficiency and is suitable for various large-scale industrial production scenarios. However, due to its more complex structure and higher power, its production and maintenance costs are relatively high.

[0003] Application number CN201811471190.X discloses a multi-cylinder air compressor, which includes a motor with air compressor components at both ends of the motor. Each air compressor component includes a crankcase mounted on the motor, and a cylinder block and connecting rod are mounted on the crankcase. As shown in the patent, the crankcase of a multi-cylinder air compressor under the existing technology is usually an integrated structure with an integrated design. The problem is that when a fault occurs inside the air compressor, the crankcases at both ends of the motor need to be completely disassembled to identify the faulty structure and to repair it. This operation is complicated and inconvenient for air compressor maintenance. Utility Model Content

[0004] The purpose of the utility model is to provide a split multi-cylinder air compressor housing in order to solve the above problems in the prior art.

[0005] The purpose of the utility model can be achieved through the following technical solutions: A split multi-cylinder air compressor housing, including a motor housing, a crankcase body and a crankcase cover, wherein motor connecting cylinders are formed at both ends of the motor housing, and the crankcase cover is fixedly connected to the crankcase body and is jointly sleeved on both ends of the motor housing;

[0006] The front side of the crankcase is formed with a case connecting cylinder sleeved on the motor connecting cylinder, and a square partition layer is formed on the outer end of the case connecting cylinder. The partition layer separates the motor stator and rotor structure inside the air compressor from the crankshaft piston structure, and a central axis hole for positioning the output shaft is opened in the center. The piston rod sleeved on the output shaft drives its piston head to reciprocate in the cylinder column. A connecting bracket is integrated between the bottom of the cylinder column and the outer edge of the partition layer. The connecting bracket is provided with a case connecting hole on the side wall, and connecting columns are formed on the connecting bracket on all sides of the cylinder column;

[0007] The top and bottom side walls of the crankcase cover are provided with piston through holes corresponding to the piston ports of the cylinder column, and the other two side walls are provided with case cover connecting holes corresponding to the case body connecting holes. The crankcase body and the crankcase cover can be fixedly connected by connecting the case body connecting holes and the case cover connecting holes.

[0008] In the above-mentioned split multi-cylinder air compressor housing, a plurality of heat dissipation holes are opened circumferentially on the cylindrical side wall of the box connecting cylinder.

[0009] In the above-mentioned split multi-cylinder air compressor housing, a plurality of material reduction holes are opened on the separation layer in the circumferential direction around the central axis hole.

[0010] In the above-mentioned split multi-cylinder air compressor housing, bolt holes are respectively opened at the four corners of the partition layer, and long connecting bolts are installed in the bolt holes. The crankcase bodies at both ends of the motor housing are fixedly connected by connecting bolts.

[0011] Compared with the prior art, the split multi-cylinder air compressor housing provided by the utility model is designed by splitting the traditional integrated crankcase into a crankcase body and a crankcase cover. When an internal fault occurs in the air compressor, the crankshaft piston structure and the motor stator and rotor structure can be inspected in turn by disassembling the crankcase cover and the crankcase body. Maintenance is convenient and more targeted, which is beneficial to the long-term use and maintenance of the multi-cylinder air compressor. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a structural diagram of the split multi-cylinder air compressor housing;

[0013] Figure 2 This is the structural explosion diagram of the split multi-cylinder air compressor housing;

[0014] Figure 3 This is a schematic diagram of the structure of the crankcase in the housing of the split multi-cylinder air compressor;

[0015] In the above figure, 100, motor housing; 110, motor connecting tube; 200, crankcase; 210, case connecting tube; 211, heat dissipation hole; 220, partition layer; 221, center axis hole; 222, material reduction hole; 223, bolt hole; 230, connecting bracket; 231, connecting column; 232, case connecting hole; 240, cylinder column; 250, connecting bolt; 300, crankcase cover; 310, case cover connecting hole; 320, piston through hole. DETAILED DESCRIPTION

[0016] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0017] like Figures 1 to 3As shown, the housing of the split multi-cylinder air compressor includes a motor housing 100, a crankcase body 200 and a crankcase cover 300. The crankcase cover 300 and the crankcase body 200 are fixedly connected to form a group. The outer diameter of both ends of the motor housing 100 is reduced to form a motor connecting tube 110. A group of crankcase cover 300 and crankcase body 200 are sleeved on the motor connecting tube 110 at both ends.

[0018] like Figure 3 As shown, the front side of the crankcase 200 is formed with a case connecting tube 210 that is sleeved on the motor connecting tube 110. The outer diameter of the case connecting tube 210 is the same as the outer diameter of the middle section of the motor housing 100. The cylindrical side wall of the case connecting tube 210 is circumferentially opened with a plurality of heat dissipation holes 211. The heat dissipation holes 211 are used to enhance the heat dissipation of the motor housing 100 during motor operation and reduce production materials. A square partition layer 220 is formed on the outer extension of the end of the case connecting tube 210. The partition layer 220 separates the motor stator and rotor structure inside the air compressor from the crankshaft piston structure. The center of the partition layer 220 is opened with a central shaft hole 221. The motor output shaft is mounted in the central shaft hole 221 through a bearing to maintain its position and stability. A plurality of material reduction holes 222 are circumferentially opened on the separation layer 220 around the central axis hole 221. The material reduction holes 222 can not only reduce production materials and reduce production costs while ensuring the strength of the separation layer 220, but also enhance the air circulation inside the air compressor and facilitate heat dissipation inside the air compressor.

[0019] The piston structure inside the air compressor is sleeved onto the output shaft. The piston rod, driven by the rotation of the eccentric wheel, drives the piston head to reciprocate within the cylinder column 240. A transitional connecting bracket 230 is integrated between the bottom of the cylinder column 240 and the outer edges of the four corners of the partition layer 220. Connecting columns 231 are formed on the connecting bracket 230 on all four sides of the cylinder column 240. The connecting column 231 is oriented in the same direction as the cylinder column 240, and a screw hole is opened in its axial center for connecting the valve plate and cylinder head at the top of the cylinder column 240. The connecting bracket 230 has a box connection hole 232 opened on the side wall.

[0020] like Figure 2 As shown, the crankcase cover 300 is a horizontally mounted table-shaped shell structure as a whole, and an array of heat dissipation structures is provided on the horizontal side facing outward. Piston through holes 320 corresponding to the piston ports of the cylinder column 240 are provided on the top and bottom side walls, which are used for the reciprocating motion of the piston. The other two front and rear side walls are provided with case cover connecting holes 310 corresponding to the case body connecting holes 232. The crankcase body 200 and the crankcase cover 300 can be fixedly connected by connecting the case body connecting holes 232 and the case cover connecting holes 310.

[0021] Further explanation: in order to ensure the installation stability of the crankcase assemblies at both ends of the motor housing 100, bolt holes 223 are respectively opened at the four corners of the partition layer 220 of the crankcase body 200, and long connecting bolts 250 are installed in the bolt holes 223. The connecting bolts 250 pass through the bolt holes 223 of the partition layer 220 of the crankcase body 200 on both sides, and the crankcase bodies 200 symmetrically arranged on both sides are fixedly connected correspondingly by the connecting bolts 250.

[0022] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.

[0023] Although various terms are used in this document, the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional restrictions is contrary to the spirit of the present invention.

Claims

1. A split-type multi-cylinder air compressor housing, comprising a motor housing (100), a crankcase body (200) and a crankcase cover (300), wherein motor connecting cylinders (110) are formed at both ends of the motor housing (100), and the crankcase cover (300) is fixedly connected to the crankcase body (200) and is sleeved on both ends of the motor housing (100); It is characterized by: The front side of the crankcase (200) is formed with a case connecting tube (210) sleeved on the motor connecting tube (110), and the end of the case connecting tube (210) is extended to form a square separation layer (220), and the separation layer (220) separates the motor stator and rotor structure inside the air compressor from the crankshaft piston structure, and a central axis hole (221) for positioning the output shaft is opened in the center. The piston rod sleeved on the output shaft drives its piston head to reciprocate in the cylinder column (240), and a connecting bracket (23) is formed between the bottom of the cylinder column (240) and the outer edge of the separation layer (220). 0), the connecting bracket (230) is provided with a case connecting hole (232) on the side wall, and connecting columns (231) are formed on the connecting bracket (230) around the cylinder column (240); the top and bottom side walls of the crankcase cover (300) are provided with piston through holes (320) corresponding to the piston ports of the cylinder column (240), and the other two side walls are provided with case cover connecting holes (310) corresponding to the case connecting holes (232), and the crankcase (200) and the crankcase cover (300) can be fixedly connected by connecting the case connecting holes (232) and the case cover connecting holes (310).

2. A split multi-cylinder air compressor housing according to claim 1, characterized in that: A plurality of heat dissipation holes (211) are circumferentially formed on the cylindrical side wall of the box connecting tube (210).

3. A split multi-cylinder air compressor housing according to claim 1, characterized in that: The separation layer (220) is provided with a plurality of material reduction holes (222) circumferentially around the central axis hole (221).

4. A split multi-cylinder air compressor housing according to claim 1, characterized in that: Bolt holes (223) are respectively provided at the four corners of the separation layer (220), and long connecting bolts (250) are installed in the bolt holes (223). The crankcase bodies (200) at both ends of the motor housing (100) are fixedly connected correspondingly via the connecting bolts (250).

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