Oil level detection mechanism of oil air compressor

Abstract

The utility model provides an oil level detection mechanism of an oiled air compressor, and belongs to the field of air compression equipment. According to the oil level detection mechanism of the oiled air compressor, the oiled air compressor comprises a crank case, a through hole horizontally penetrates through the side wall of the lower end of the crank case, an oil immersion lens is installed in the through hole, the oil level detection mechanism comprises a liquid level sensor and an installation hole formed in the side wall of the lower end of the crank case in a penetrating mode, the liquid level sensor comprises a rod-shaped main body, and one end of the main body is a detection end; the detection end penetrates through the mounting hole and is located in the crankcase, the position of the detection end is lower than the central point position of the through hole, and the main body is fixedly connected with the crankcase in a sealed mode. The oil level detection mechanism of the oiled air compressor can actively remind a user of oil shortage.

Description

Technical Field

[0001] The utility model belongs to the field of air compression equipment, and relates to an oil-injected air compressor, in particular to an oil level detection mechanism for an oil-injected air compressor. Background Technique

[0002] An air compressor is a device used to compress gases, which is divided into two types: oil-injected air compressors and oil-free air compressors.

[0003] The crankcase is an important part of the air compressor. The crankcase of the existing oil-injected air compressor, such as the crankcase body of an air compressor disclosed in the Chinese Patent Database (Application No.: 202020533455.0), includes a crankcase. The surface of the crankcase is U-shaped, and its bottom is outwardly flared; one end of the crankcase is provided with a driving source input connection port, the two side surfaces of the crankcase are provided with air pressure connection interfaces, and the upper surface of the crankcase is also provided with an air filter connection port; an oil mirror is fixedly installed on the bottom surface of the crankcase, an oil drain valve is fixedly installed on the surface of the crankcase at the bottom of the oil mirror, and an oil filling port is obliquely and straight upwardly provided on one side surface of the crankcase; an oil filtering mechanism is fixedly installed on the inner bottom of the crankcase through a flexible connecting member.

[0004] In the above-mentioned crankcase, an oil mirror is fixedly installed on the bottom surface of the crankcase. During use, the user observes the oil level inside the crankcase through the oil mirror. However, this method completely relies on the user to actively check, and there is a high probability of negligence. Summary of the Utility Model

[0005] The purpose of the present utility model is to address the above problems existing in the prior art and propose an oil level detection mechanism for an oil-injected air compressor that can actively remind the user of oil shortage.

[0006] The purpose of the present utility model can be achieved by the following technical solutions: an oil level detection mechanism for an oil-injected air compressor. The oil-injected air compressor includes a crankcase. A through hole is horizontally penetrated through the lower side wall of the crankcase, and an oil mirror is installed in the through hole. The feature is that this oil level detection mechanism includes a liquid level sensor and an installation hole penetrating through the lower side wall of the crankcase. The liquid level sensor includes a rod-shaped main body. One end of the main body is a detection end. The detection end passes through the installation hole and is located inside the crankcase, and the position of the detection end is lower than the center point position of the through hole. The main body is fixedly connected to the crankcase in a sealed manner.

[0007] The liquid level sensor is provided, and the position of the detection end is lower than the center point position of the through hole. In this way, during actual use, the liquid level sensor is connected to the controller to actively remind the user of oil shortage in the crankcase, avoiding dry burning of the machine head due to negligence and effectively ensuring the service life of the machine head.

[0008] In the above-mentioned oil-injected air compressor oil level detection mechanism, the type of the installation hole is a threaded hole, and the main body is screwed into the installation hole, which is effective and convenient for installing the liquid level sensor.

[0009] In the above-mentioned oil-injected air compressor oil level detection mechanism, the installation hole is arranged obliquely downward, which is beneficial to processing.

[0010] In the above-mentioned oil-injected air compressor oil level detection mechanism, a ring-shaped limit seat is formed on the outer wall of the main body, and the limit seat presses against the outer wall of the crankcase, so that the main body is screwed in place at one time, which is further convenient for assembly.

[0011] In the above-mentioned oil-injected air compressor oil level detection mechanism, an annular groove coaxial with the limit seat is formed on the end face of the limit seat, and an annular sealing gasket is arranged in the annular groove, and both end faces of the sealing gasket are tightly pressed against the bottom wall of the annular groove and the edge of the installation hole respectively. Under the action of the sealing gasket, the sealing performance formed between the main body and the crankcase is effectively enhanced.

[0012] As another solution, in the above-mentioned oil-injected air compressor oil level detection mechanism, an annular positioning groove is formed on the outer side wall of the main body, an O-ring is arranged in the positioning groove, and the outer peripheral surface of the O-ring presses against the hole wall of the installation hole.

[0013] In the above-mentioned oil-injected air compressor oil level detection mechanism, the type of the liquid level sensor is a photoelectric liquid level sensor.

[0014] Compared with the prior art, the oil-injected air compressor oil level detection mechanism of the present invention is provided with a liquid level sensor, and the position of the detection end is lower than the center point position of the through hole. In this way, when in actual use, the liquid level sensor is connected to the controller to actively remind the user that the oil in the crankcase is insufficient, avoiding dry burning of the machine head due to negligence, and effectively ensuring the service life of the machine head. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a three-dimensional schematic diagram of the oil-injected air compressor oil level detection mechanism.

[0016] Figure 2 is a cross-sectional schematic diagram of the oil-injected air compressor oil level detection mechanism.

[0017] Figure 3 is Figure 2 an enlarged schematic diagram of part A in

[0018] In the figure, 1. crankcase; 1a. through hole; 2. oil sight glass; 3. liquid level sensor; 3a. main body; 3a1. detection end; 3a2. limit seat; 4. sealing gasket. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The following are specific embodiments of the present invention and in conjunction with the drawings, the technical solutions of the present invention will be further described, but the present invention is not limited to these embodiments. Example 1

[0020] As Figures 1 to 3 shown, in the oil-lubricated air compressor oil level detection mechanism,

[0021] The oil-lubricated air compressor includes a crankcase 1. A through hole 1a horizontally penetrates the lower side wall of the crankcase 1. The through hole 1a is arranged close to the bottom wall of the crankcase 1, and an oil sight glass 2 is installed in the through hole 1a. Among them, the structure and installation method of the oil sight glass 2 are both existing ones and will not be elaborated here.

[0022] This oil level detection mechanism includes a liquid level sensor 3 and a mounting hole penetrating through the lower side wall of the crankcase 1. Among them, the liquid level sensor 3 is an existing product, and preferably, the liquid level sensor 3 is an optoelectronic liquid level sensor 3. The liquid level sensor 3 includes a rod-shaped main body 3a. One end of the main body 3a is a detection end 3a1. The detection end 3a1 passes through the mounting hole and is located inside the crankcase 1, and the position of the detection end 3a1 is lower than the center point position of the through hole 1a. The main body 3a is fixedly connected to the crankcase 1 in a sealed manner.

[0023] The liquid level sensor 3 is provided, and the position of the detection end 3a1 is lower than the center point position of the through hole 1a. In this way, when actually in use, the liquid level sensor 3 is connected to the controller to actively remind the user that the crankcase 1 is short of oil, avoiding dry burning of the machine head due to negligence and effectively ensuring the service life of the machine head.

[0024] In this embodiment,

[0025] As Figure 2 and Figure 3 shown, the installation method of the main body 3a is as follows: The type of the mounting hole is a threaded hole, and the main body 3a is screwed into the mounting hole, effectively facilitating the installation of the liquid level sensor 3. Further explanation, an annular limit seat 3a2 is formed on the outer wall of the main body 3a. The limit seat 3a2 and the main body 3a are coaxially arranged, and the limit seat 3a2 abuts against the outer wall of the box body, enabling the main body 3a to be screwed in place at one time, further facilitating assembly.

[0026] Preferably, the mounting hole is arranged obliquely downward, which is beneficial to processing.

[0027] The sealing method between the main body 3a and the box body is as follows: An annular groove coaxial with the limit seat 3a2 is formed on the end face of the limit seat 3a2. An annular sealing gasket 4 is arranged in the annular groove, and both end faces of the sealing gasket 4 are tightly pressed against the bottom wall of the annular groove and the edge of the mounting hole respectively. Under the action of the sealing gasket 4, the sealing performance formed between the main body 3a and the box body is effectively enhanced. Example 2

[0028] The structure and principle of the second embodiment are basically the same as those of the first embodiment. The difference lies in that: an annular positioning groove is formed on the outer side wall of the main body 3a, an O-ring is arranged in the positioning groove, and the outer peripheral surface of the O-ring is pressed against the wall of the mounting hole.

[0029] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art to which the present invention pertains can make various modifications or supplements to the described specific embodiments or use similar means for substitution, but will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. An oil level detection mechanism for an oil-filled air compressor, the oil-filled air compressor comprising a crankcase (1), a through hole (1a) being horizontally penetrated on a side wall of a lower end of the crankcase (1), an oil mirror (2) being installed in the through hole (1a), characterized in that: The oil level detection mechanism comprises a liquid level sensor (3) and a mounting hole penetrating through a side wall at the lower end of a crankcase (1). The liquid level sensor (3) comprises a rod-shaped main body (3a). One end of the main body (3a) is a detection end (3a1). The detection end (3a1) passes through the mounting hole and is located in the crankcase (1). The position of the detection end (3a1) is lower than the center point of the through hole (1a). The main body (3a) is sealed and fixedly connected to the crankcase (1).

2. The oil level detection mechanism for an oil-filled air compressor according to claim 1, characterized in that: The mounting hole type is a threaded hole, and the main body (3a) is screwed into the mounting hole.

3. The oil level detection mechanism for an oil-filled air compressor according to claim 1 or 2, characterized in that: The mounting holes are arranged obliquely downward.

4. The oil level detection mechanism for an oil-filled air compressor according to claim 2, characterized in that: An annular limiting seat (3a2) is formed on the outer wall of the main body (3a), and the limiting seat (3a2) is pressed against the outer wall of the crankcase (1).

5. The oil level detection mechanism for an oil-filled air compressor according to claim 4, characterized in that: An annular groove coaxially arranged with the limit seat (3a2) is provided on the end surface of the limit seat (3a2), an annular sealing gasket (4) is provided in the annular groove, and both end surfaces of the sealing gasket (4) are respectively pressed tightly against the bottom wall of the annular groove and the edge of the mounting hole.

6. The oil level detection mechanism for an oil-filled air compressor according to claim 2, characterized in that: An annular positioning groove is provided on the outer side wall of the main body (3a), an O-ring is provided in the positioning groove, and the outer peripheral surface of the O-ring is pressed against the wall of the mounting hole.

7. The oil level detection mechanism for an oil-filled air compressor according to claim 1, characterized in that: The type of liquid level sensor (3) is a photoelectric liquid level sensor.

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