Double-layer oil blocking respirator

Abstract

The utility model discloses a double-layer oil blocking respirator which comprises a respirator shell, the respirator shell is provided with an air inlet hole, an air outlet hole and a breathing channel, the breathing channel penetrates through the respirator shell in the axial direction and is communicated with the air inlet hole and the air outlet hole, and a filtering device and a breathing core are arranged in the breathing channel. The breathing core comprises a core shaft, a sealing installation part and a plurality of flow guide parts which are fixedly arranged on the core shaft at intervals, the sealing installation part is arranged at the end of the core shaft and is in sealing fit with the breathing channel close to one end of the air outlet, and a radial flow channel is formed between every two adjacent flow guide parts; the flow guide part extends in the radial direction of the mandrel, one end of the flow guide part is attached to the inner wall of the respirator shell, and an axial flow channel communicating with the radial flow channel is formed between the other end of the flow guide part and the inner wall of the respirator shell. The breathing device has the advantages that the oil blocking layers are arranged to effectively prevent oil injection when the breathing device exhausts air, and air outlet noise is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of respirators for air compressors, in particular to a double-layer oil-blocking respirator. Background Art

[0002] The main functions of the air compressor's breather are to separate oil and gas, remove the pressurized air leaking from the piston ring in the body, and balance the volume difference in the body caused by the reciprocating motion of the piston, thereby ensuring the normal operation of the air compressor and the quality of the compressed air.

[0003] The existing Chinese patent with announcement number CN203081694U discloses a respirator assembly for an air compressor, including a respirator shell, a respirator cap screwed to the upper port of the respirator shell, and a bearing seat sealing ring for plugging into the bearing seat is provided at the lower part of the respirator shell; a respirator cap sealing ring is provided at the screw interface between the respirator cap and the upper end of the respirator shell, and the respirator cap body is funnel-shaped with a large upper opening and a small lower opening.

[0004] However, the above-mentioned respirator of the air compressor has the following disadvantages: although the respirator can collect and reflux the oil mist through the cooperation of the funnel cavity and the lower opening, it lacks a filtering device, which will cause fine oil droplets to be entrained in the discharged exhaust gas, causing oil spraying. In addition, the air outlet of the respirator is a straight hole, which further aggravates the oil spraying amount and injection rate, and urgently needs to be improved. Utility Model Content

[0005] The utility model aims to provide a double-layer oil-blocking respirator, which has the effect of effectively preventing oil spraying when the respirator is exhausting air and reducing exhaust noise by arranging multiple layers of oil-blocking layers.

[0006] The above technical objectives of the present utility model are achieved through the following technical solutions: a double-layer oil-blocking respirator, comprising a respirator shell, the respirator shell being provided with an air inlet, an air outlet, and a breathing passage extending axially through the respirator shell and communicating with the air inlet and the air outlet, wherein a filter device and a breathing core are provided in the breathing passage, the breathing core comprising a core shaft, a sealing mounting portion, and a plurality of flow guide portions fixedly mounted on the core shaft and spaced apart, the sealing mounting portion being provided at an end of the core shaft and sealingly cooperating with the breathing passage near one end of the air outlet, and a radial flow channel being formed between adjacent flow guide portions;

[0007] The guide portion is extended radially along the core shaft, one end of the guide portion is in contact with the inner wall of the respirator shell, and an axial flow channel communicating with the radial flow channel is formed between the other end of the guide portion and the inner wall of the respirator shell.

[0008] By adopting the above technical scheme, the oil mist enters the breathing channel through the air inlet, and the filtering device is used to filter and block part of the oil mist, thereby achieving the first layer of oil blocking effect. The finer oil mist enters the breathing channel area where the breathing core is located, and the adjacent guide parts are interconnected through radial flow channels and axial flow channels, so that the breathing channel area where the breathing core is located forms an "S"-shaped flow channel, which is used to increase the retention stroke and time of the oil mist in the breathing channel, so that the oil mist can have more time to bead on the breathing core and gather into oil droplets to reflux, thereby achieving the second layer of oil blocking effect. The multiple axial flow channels and radial flow channels formed between the breathing core and the respirator housing interact with each other and cooperate with the filtering device, which can effectively reduce the noise pollution generated by the air compressor from the respirator. The utility model has the effect of effectively preventing oil spraying when the respirator is exhausting air and reducing the exhaust noise by setting multiple oil blocking layers.

[0009] The present invention is further configured as follows: adjacent flow guide portions are provided with cut-off surfaces in a staggered manner, and the axial flow channel is formed between the cut-off surfaces and the respirator shell.

[0010] By adopting the above technical solution, the opening of the cut surface forms a notch at one end of the guide portion. When the breathing core is placed in the respirator channel, an axial flow channel is formed between the notch and the respirator shell.

[0011] The utility model is further configured as follows: the filter device is arranged in the breathing passage and is located at one end of the breathing core close to the air inlet, and the side wall of the filter device is tightly matched with the inner wall of the breathing passage of the respirator shell.

[0012] By adopting the above technical solution, the filter device can be firmly installed in the breathing passage, and the filter device is always ensured to serve as the first layer of oil blocking, so that most of the oil mist is preferentially blocked by the filter device and refluxed after filtration, reducing the oil blocking burden of the breathing core.

[0013] The present invention is further configured such that the inner diameter of the breathing passage 1c gradually increases from an end close to the air inlet 1a to an end away from the air inlet 1a.

[0014] By adopting the above technical solution, a guiding slope is formed at the bottom of the breathing channel, which facilitates the oil droplets collected by the breathing core and the filter device to quickly flow back into the air compressor from the air inlet.

[0015] The present invention is further configured as follows: a clamping portion is extended from the side wall of the sealing installation portion, a clamping groove is opened on the inner wall of the breathing passage of the respirator shell, and the clamping portion is clamped and matched with the corresponding clamping groove.

[0016] By adopting the above technical solution, the installation firmness between the breathing core and the respirator shell is improved.

[0017] The utility model is further configured as follows: a plurality of the air outlet holes are opened on a side wall of the respirator shell away from one end of the air inlet hole.

[0018] By adopting the above technical solution, the distance between the air inlet and the air outlet is kept at the maximum, the retention distance and retention time of the oil mist in the breathing passage are increased, and more oil mist can be collected in the respirator and refluxed.

[0019] The present invention is further configured as follows: two air outlet holes are provided, and the two air outlet holes are symmetrically opened on the side wall of the respirator shell.

[0020] The present invention is further configured as follows: the respirator shell includes a mounting portion that is arranged away from the air outlet, and the air inlet is penetrated and opened on the mounting portion.

[0021] By adopting the above technical solution, the mounting portion is used to mount the respirator on the air compressor.

[0022] The present invention is further configured as follows: a sealing ring is provided on the outer cover of the mounting portion.

[0023] By adopting the above technical solution, the addition of the sealing ring can improve the sealing performance of the connection between the respirator and the air compressor when the respirator is connected to the air compressor.

[0024] The present invention is further configured as follows: a limiting step is radially provided at one end of the respirator shell close to the air inlet.

[0025] By adopting the above technical solution, the limiting step can act as a limiting stop when the respirator is installed on the air compressor, ensuring that the respirator can be installed on the air compressor more accurately.

[0026] In summary, the present invention has the following beneficial effects:

[0027] A filter device and a breathing core are arranged in the breathing passage of the respirator shell. The breathing core includes a core shaft, a sealing mounting portion, and a plurality of guide parts fixed on the core shaft and spaced apart. Radial flow channels are formed between adjacent guide parts, and adjacent guide parts are relatively staggered with cross-sections. An axial flow channel connected to the radial flow channel is formed between the cross-section and the respirator shell. The oil mist enters the breathing passage through the air inlet hole, and the filter device is used to filter and block part of the oil mist to achieve the first layer of oil blocking effect. Finer oil mist enters the breathing passage area where the breathing core is located. The adjacent guide parts are connected to each other through the radial flow channel and the axial flow channel. An "S"-shaped flow channel is formed in the breathing channel area where the breathing core is located to increase the retention stroke and time of the oil mist in the breathing channel, so that the oil mist has more time to bead on the breathing core and gather into oil droplets to flow back, thereby achieving a second layer of oil blocking effect. The multiple axial flow channels and radial flow channels formed between the breathing core and the respirator shell interact with each other and cooperate with the filtering device, which can effectively reduce the noise pollution generated by the air compressor from the respirator. The utility model has the effect of effectively preventing oil spraying when the respirator exhausts air and reducing the exhaust noise by arranging a multi-layer oil blocking structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is the overall structure diagram of the utility model.

[0029] Figure 2 It is a longitudinal sectional view of the present utility model.

[0030] Figure 3 It is an exploded view of the present utility model.

[0031] Figure 4 It is a structural diagram of the breathing core of the utility model.

[0032] In the figure: 1. Respirator housing; 1a. Air inlet; 1b. Air outlet; 1c. Breathing channel; 1d. Snap-fit ​​groove; 1e. Oil return guide groove; 11. Mounting portion; 11a. External thread; 12. Sealing ring; 13. Limiting step; 2. Filter device; 3. Breathing core; 3a. Radial flow channel; 3b. Axial flow channel; 31. Core shaft; 32. Sealing mounting portion; 321. Snap-fit ​​portion; 33. Guide portion; 330. Cutting surface. DETAILED DESCRIPTION

[0033] The present invention will be further described below with reference to the accompanying drawings.

[0034] A double-layer oil-blocking respirator, such as Figure 1-2As shown, the respirator shell 1 includes an air inlet 1a, an air outlet 1b, and a breathing channel 1c extending axially through the respirator shell 1 and communicating with the air inlet 1a and the air outlet 1b. A filter device 2 and a breathing core 3 are provided in the breathing channel 1c. The breathing core 3 includes a core shaft 31, a sealing mounting portion 32, and a plurality of guide portions 33 fixed to the core shaft 31 and spaced apart. The sealing mounting portion 32 is provided at the end of the core shaft 31 and seals with the breathing channel 1c near one end of the air outlet 1b. A radial flow channel 3a is formed between adjacent guide portions 33. The guide portion 33 extends along the core shaft 31. The air outlet holes 1b are provided on the side wall of the respirator housing 1 away from the air inlet hole 1a, so that the travel distance between the air inlet hole 1a and the air outlet hole 1b is kept at the maximum, thereby increasing the retention distance and retention time of the oil mist in the breathing passage 1c, so that more oil mist can be collected in the respirator and reflux can be achieved; in this embodiment, there are two air outlet holes 1b, and the two air outlet holes 1b are symmetrically provided on the side wall of the respirator housing 1.

[0035] like Figure 2-4 As shown, the filter device 2 is arranged in the breathing channel 1c and is located at one end of the breathing core 3 close to the air inlet 1a, and the side wall of the filter device 2 is tightly matched with the inner wall of the breathing channel 1c of the respirator shell 1, so that the filter device 2 can be firmly installed in the breathing channel 1c, and it is always ensured that the filter device 2 serves as the first layer of oil blocking, so that most of the oil mist is preferentially blocked by the filter device 2 and refluxed after filtration, reducing the oil blocking burden of the breathing core 3; the inner diameter of the breathing channel 1c gradually expands from the end close to the air inlet 1a to the end away from the air inlet 1a, so that the bottom of the breathing channel 1c forms a guiding slope, which facilitates the oil droplets collected by the breathing core 3 and the filter device 2 to quickly flow back from the air inlet 1a to the air compressor; the side wall of the sealing mounting portion 32 is extended with a clamping portion 321, and the respirator shell 1 is provided with a clamping groove 1d on the inner wall of the breathing channel 1c, and the clamping portion 321 is clamped and matched with the corresponding clamping groove 1d, thereby improving the installation firmness between the breathing core 3 and the respirator shell 1.

[0036] like Figure 1-4As shown, the respirator housing 1 includes a mounting portion 11 arranged away from the air outlet 1b, and the air inlet 1a is penetrated by a mounting portion 11, and the mounting portion 11 is used to install the respirator on the air compressor; the outer wall of the mounting portion 11 is provided with an external thread 11a, and by adopting the above technical solution, the respirator can be threadedly connected to the air compressor; the outer sleeve of the mounting portion 11 is provided with a sealing ring 12, and the addition of the sealing ring 12 can improve the sealing of the connection between the two when the respirator is connected to the air compressor; the end of the respirator housing 1 close to the air inlet 1a is radially provided with a limit step 13, and the limit step 13 can act as a limit stop when the respirator is installed in place on the air compressor, ensuring that the respirator can be installed on the air compressor more accurately.

[0037] The basic working principle of the present invention is as follows: a filter device 2 and a breathing core 3 are arranged in the breathing passage 1c of the respirator shell 1, the breathing core 3 includes a core shaft 31, a sealing mounting portion 32 and a plurality of guide portions 33 fixed on the core shaft 31 and spaced apart, radial flow channels 3a are formed between adjacent guide portions 33, and adjacent guide portions 33 are relatively staggered with cut surfaces 330, and an axial flow channel 3b is formed between the cross section and the respirator shell 1 to communicate with the radial flow channel 3a, the oil mist enters the breathing passage 1c through the air inlet 1a, and is filtered and blocked by the filter device 2 to achieve the first layer of oil blocking effect, and finer oil mist enters the breathing passage 1c area where the breathing core 3 is located, and the adjacent guide portions 33 are spaced apart. By interconnecting the radial flow channel 3a and the axial flow channel 3b, an "S"-shaped flow channel is formed in the breathing channel 1c area where the breathing core 3 is located, so as to increase the retention stroke and time of the oil mist in the breathing channel 1c, so that the oil mist can have more time to bead on the breathing core 3 and gather into oil droplets for reflux, thereby achieving the second layer of oil blocking effect. The multiple axial flow channels 3b and radial flow channels 3a formed between the breathing core 3 and the respirator housing 1 interact with each other and cooperate with the filter device 2, which can effectively reduce the noise pollution generated by the air compressor from the respirator. The utility model has the effect of effectively preventing oil spraying when the respirator exhausts air and reducing the exhaust noise by setting a multi-layer oil blocking structure.

[0038] The above description is only a preferred embodiment of the present invention. Therefore, any equivalent changes or modifications made according to the structure, features and principles described in the scope of the present invention patent application are included in the scope of the present invention patent application.

Claims

1. A double-layer oil-blocking respirator, comprising a respirator shell (1), the respirator shell (1) being provided with an air inlet (1a), an air outlet (1b), and a breathing passage (1c) extending axially through the respirator shell (1) and communicating with the air inlet (1a) and the air outlet (1b), characterized in that: The breathing passage (1c) is provided with a filter device (2) and a breathing core (3), the breathing core (3) comprising a core shaft (31), a sealing mounting portion (32), and a plurality of flow guide portions (33) fixedly mounted on the core shaft (31) and spaced apart. The sealing mounting portion (32) is provided at the end of the core shaft (31) and is in sealing engagement with the breathing passage (1c) near one end of the air outlet (1b), and radial flow channels (3a) are formed between adjacent flow guide portions (33); The guide portion (33) is arranged to extend radially along the core shaft (31), one end of the guide portion is in contact with the inner wall of the respirator shell (1), and an axial flow channel (3b) communicating with the radial flow channel (3a) is formed between the other end of the guide portion and the inner wall of the respirator shell (1).

2. A double-layer oil-blocking respirator according to claim 1, characterized in that: Adjacent flow guide portions (33) are provided with cut-off surfaces (330) in a staggered manner relative to each other, and the axial flow channel (3b) is formed between the cut-off surfaces (330) and the respirator shell (1).

3. The double-layer oil-blocking respirator according to claim 1, characterized in that: The filter device (2) is arranged in the breathing passage (1c) and is located at one end of the breathing core (3) close to the air inlet (1a), and the side wall of the filter device (2) is tightly matched with the inner wall of the breathing passage (1c) of the respirator shell (1).

4. The double-layer oil-blocking respirator according to claim 1, characterized in that: The inner diameter of the breathing passage (1c) gradually increases from an end close to the air inlet (1a) to an end away from the air inlet (1a).

5. The double-layer oil-blocking respirator according to claim 1, characterized in that: A clamping portion (321) is extended from the side wall of the sealing mounting portion (32), and a clamping groove (1d) is provided on the inner wall of the breathing passage (1c) of the respirator shell (1), and the clamping portion (321) is clamped and matched with the corresponding clamping groove (1d).

6. The double-layer oil-blocking respirator according to claim 1, characterized in that: A plurality of the air outlet holes (1b) are provided on a side wall of the respirator shell (1) at an end away from the air inlet hole (1a).

7. The double-layer oil-blocking respirator according to claim 1, characterized in that: There are two air outlet holes (1b), and the two air outlet holes (1b) are symmetrically opened on the side wall of the respirator shell (1).

8. The double-layer oil-blocking respirator according to claim 1, characterized in that: The respirator shell (1) comprises a mounting portion (11) disposed away from the air outlet (1b), and the air inlet (1a) is provided through the mounting portion (11).

9. The double-layer oil-blocking respirator according to claim 8, characterized in that: The outer cover of the mounting portion (11) is provided with a sealing ring (12).

10. The double-layer oil-blocking respirator according to claim 1, characterized in that: A limiting step (13) is radially provided on one end of the respirator shell (1) close to the air inlet (1a).

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