Exhaust end cover of air compressor

Abstract

The utility model discloses an exhaust end cover of an air compressor, and belongs to the technical field of air compressors. Comprising a shell; a bearing cavity and an exhaust port are formed in the shell, the bearing cavity is used for installing a bearing seat, and the exhaust port is located below the bearing cavity; a filtering assembly is arranged in the exhaust port; the filter assembly comprises a built-in cylinder, the built-in cylinder is sleeved with a second-stage cylinder, the second-stage cylinder is sleeved with a third-stage cylinder, and the outer side of the third-stage cylinder is slidably connected with the inner wall of the exhaust port; the built-in cylinder, the second-stage cylinder and the third-stage cylinder are made of filter cotton; according to the exhaust end cover of the air compressor, the problem that impurities are easily discharged along with the exhaust port is solved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of air compressors, in particular to an air compressor exhaust end cover. BACKGROUND

[0002] The screw air compressor adopts a pre-assembled configuration screw air compressor, which only needs a single power connection and compressed air connection and is internally provided with a cooling system. The screw air compressor is driven by a motor. When the tooth groove space of the main and slave rotors rotates to the opening of the air inlet end wall, the space is large, and the air outside is filled in the space. When the air inlet side end surface of the rotor rotates away from the air inlet of the shell, the air in the tooth groove is enclosed between the main and slave rotors and the shell, and the air suction process is completed. In the conveying process, the volume is continuously reduced, the gas is continuously compressed, the pressure is increased, and the temperature is increased. When the closed tooth peak of the rotor rotates to meet the air outlet of the shell, the compressed air starts to discharge. Until the matching surface of the tooth peak and the tooth groove moves to the air outlet end surface, the tooth groove space is zero, and the air discharge process is completed.

[0003] After the traditional screw air compressor works for a long time, hard particles generated by the high-temperature operation of lubricating oil, glue, carbon and other impurities are accumulated at the exhaust end cover. The lubricating oil system has limitations, and the inside of the end cover cannot be thoroughly cleaned, so that impurities are easily discharged from the exhaust port.

[0004] Therefore, it is necessary to provide an air compressor exhaust end cover to solve the above problems.

[0005] It should be noted that the above information disclosed in the background section is only used to understand the background of the application concept, and therefore, it can contain information that does not constitute prior art. CONTENT OF THE UTILITY MODEL

[0006] Based on the above problems existing in the prior art, the application solves the problem of providing an air compressor exhaust end cover to solve the problem that impurities are easily discharged from the exhaust port.

[0007] The technical scheme adopted by the application to solve the technical problem is: an air compressor exhaust end cover, comprising a shell; a bearing cavity and an exhaust port are arranged in the inside of the shell, the bearing cavity is used for installing a bearing seat, and the exhaust port is located below the bearing cavity; a filter assembly is arranged in the inside of the exhaust port;

[0008] The filter assembly comprises an embedded cylinder, the outside of the embedded cylinder is sleeved with a secondary cylinder, the outside of the secondary cylinder is sleeved with a tertiary cylinder, and the outside of the tertiary cylinder is slidably connected with the inner wall of the exhaust port; the materials of the embedded cylinder, the secondary cylinder and the tertiary cylinder are filter cotton; thereby, the filter assembly filters the gas emitted by the rotor and the bearing, adsorbs the particles, and reduces the degree of impurities discharged from the exhaust port.

[0009] Further, the outer side of the built-in cylinder is uniformly provided with a spiral groove one and a ventilation hole one, the spiral direction of the spiral groove one is counterclockwise, and the ventilation hole one is located at one end of the spiral groove one. After the hard particles enter the built-in cylinder and pass through the ventilation hole one, part of the hard particles pass through the spiral groove one for storage.

[0010] Further, the outer side of the secondary cylinder is uniformly provided with a spiral groove two and a ventilation hole two, the ventilation hole two is communicated with the ventilation hole one, the spiral direction of the spiral groove two is clockwise, the ventilation hole two is located at one end of the spiral groove two, the outer side of the secondary cylinder is uniformly provided with a square groove, the square groove is located at the spiral groove two and intersects with part of the spiral groove two. Part of the hard particles pass through the square groove from the spiral groove one and enter the spiral groove two for storage, thereby prolonging the service life of the built-in cylinder.

[0011] Further, the outer side of the tertiary cylinder is uniformly provided with a spiral groove three and a spiral groove four, the spiral groove four is located at one end of the spiral groove three, the spiral direction of the spiral groove four is clockwise, and the spiral direction of the spiral groove three is counterclockwise. The tertiary cylinder collects and stores the residual hard particles through the spiral groove three and the spiral groove four, thereby further expanding the containing capacity of the filtering assembly.

[0012] Further, the bearing cavity is clamped with a gas guide plate, the gas guide plate is assembled between the bearing seat and the rotor, the gas guide plate is rotationally connected with the rotating shaft of the rotor, and both end faces of the gas guide plate are provided with flow guide grooves. Thus, when the airflow with hard particles transmitted by the rotor enters the bearing cavity, the flow guide grooves guide the gas to the exhaust port end for exhaust, thereby avoiding the influence of excessive pressure in the bearing cavity on rotation, and the flow guide grooves cooperate with lubrication and cleaning to make the hard particles flow to the filtering assembly, thereby reducing impurities in the bearing cavity and indirectly prolonging the service life of the rotor.

[0013] Further, both ends of the built-in cylinder, the secondary cylinder and the tertiary cylinder are fixedly provided with mounting rings, one of the mounting rings is threadedly connected with one end of the exhaust port away from the flow guide plate. Thus, when the filtering assembly is replaced, the mounting ring at one end of the exhaust port away from the rotor can be rotated and removed, which is convenient and fast.

[0014] The air compressor exhaust end cover provided by the application has the following beneficial effects. The filtering assembly is provided, and the materials of the built-in cylinder, the secondary cylinder and the tertiary cylinder are filter cotton. Thus, the filtering assembly filters the gas transmitted by the rotor and the bearing and adsorbs the particles, thereby reducing the degree of impurities discharged from the exhaust port.

[0015] In addition to the purposes, features and advantages described above, the application has other purposes, features and advantages. The purposes, features and advantages will be described below with reference to the Figures 1-5 The application will be described in further detail. BRIEF DESCRIPTION OF DRAWINGS

[0016] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description, serve to explain the application.

[0017] In the drawings:

[0018] Figure 1 It is a whole schematic diagram of the air compressor exhaust end cover in the application;

[0019] Figure 2 It is a three-dimensional schematic diagram of the filter assembly structure (the three-stage cylinder is in a split state);

[0020] Figure 3 It is a three-dimensional schematic diagram of the built-in cylinder structure;

[0021] Figure 4 It is a three-dimensional schematic diagram of the two-stage cylinder structure (the two-stage cylinder is in a split state);

[0022] Figure 5 It is a three-dimensional schematic diagram of the three-stage cylinder structure (the three-stage cylinder is in a split state);

[0023] In the drawings, various reference signs:

[0024] 1, housing; 11, bearing cavity; 12, exhaust port; 13, air guide plate; 131, flow guide groove; 2, filter assembly; 21, built-in cylinder; 211, spiral groove one; 212, air hole one; 22, two-stage cylinder; 221, spiral groove two; 222, air hole two; 223, square groove; 23, three-stage cylinder; 231, spiral groove three; 232, spiral groove four. DETAILED DESCRIPTION

[0025] It should be noted that the embodiments in the application and the features in the embodiments can be combined with each other without conflict. The technical solutions in the embodiments of the application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0026] In order to enable persons skilled in the art to better understand the technical scheme of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by persons skilled in the art without creative labor should be within the scope of protection of the present application.

[0027] As Figures 1-5 shown, the present application provides an air compressor exhaust end cover, comprising a housing 1; with reference to Figure 1The inside of the shell 1 is provided with a bearing cavity 11 for installing a bearing seat and an exhaust port 12 located below the bearing cavity 11; the inside of the exhaust port 12 is provided with a filter assembly 2.

[0028] With reference to Figure 2 The filter assembly 2 comprises an inner cylinder 21, the outer side of which is sleeved with a secondary cylinder 22, the outer side of which is sleeved with a tertiary cylinder 23, the outer side of which is in sliding connection with the inner wall at the exhaust port 12; the materials of the inner cylinder 21, the secondary cylinder 22 and the tertiary cylinder 23 are filter cotton; thus, the filter assembly 2 filters the gas emitted by the rotor and the bearing and adsorbs the particles; and the degree of impurities following the exhaust of the exhaust port 12 is reduced.

[0029] Among them:

[0030] With reference to Figure 3 The outer side of the inner cylinder 21 is uniformly provided with a spiral groove one 211 and a ventilation hole one 212, the rotation direction of the spiral groove one 211 is counterclockwise, and the ventilation hole one 212 is located at one end of the spiral groove one 211. After the hard particles enter the inner cylinder 21 and pass through the ventilation hole one 212, part of them pass through the spiral groove one 211 for storage.

[0031] With reference to Figure 4 The outer side of the secondary cylinder 22 is uniformly provided with a spiral groove two 221 and a ventilation hole two 222, the ventilation hole two 222 is in communication with the ventilation hole one 212, the rotation direction of the spiral groove two 221 is clockwise, the ventilation hole two 222 is located at one end of the spiral groove two 221, the outer side of the secondary cylinder 22 is uniformly provided with a square groove 223, the square groove 223 is located at the spiral groove two 221 and intersects with part of the spiral groove two 221. A part of the hard particles pass through the square groove 223 from the spiral groove one 211 and enter the spiral groove two 221 for storage; thereby prolonging the service life of the inner cylinder 21 for filtering; at the same time, the spiral groove one and the spiral groove two can reduce the noise emitted by the airflow.

[0032] With reference to Figure 5 The outer side of the tertiary cylinder 23 is uniformly provided with a spiral groove three 231 and a spiral groove four 232, the spiral groove four 232 is located at one end of the spiral groove three 231, the rotation direction of the spiral groove four 232 is clockwise, and the rotation direction of the spiral groove three 231 is counterclockwise. The tertiary cylinder 23 collects and stores the residual hard particles through the spiral groove three 231 and the spiral groove four 232, further expanding the containing capacity of the filter assembly 2.

[0033] In addition, with reference to Figure 1The air guide plate 13 is clamped at the bearing cavity 11; the air guide plate 13 is assembled between the bearing seat and the rotor, the air guide plate 13 is rotationally connected with the rotating shaft of the rotor; both end faces of the air guide plate 13 are provided with flow guide grooves 131; thus, when the airflow with hard particles transmitted by the rotor enters the bearing cavity 11, the flow guide grooves 131 guide the gas to the exhaust port 12 to be discharged, avoiding that the pressure of the bearing cavity 11 is too large to affect the rotation, and at the same time, the flow guide grooves 131 cooperate with lubrication and cleaning to make the hard particles flow to the filter assembly 2, so that the impurities at the bearing cavity 11 are reduced, and the service life of the rotor is indirectly prolonged.

[0034] Both ends of the built-in cylinder 21, the two-stage cylinder 22 and the three-stage cylinder 23 are fixedly provided with mounting rings, one of which is threadedly connected with the end of the exhaust port 12 away from the flow guide plate; thus, when the filter assembly 2 is replaced, the mounting ring at the end of the exhaust port 12 away from the rotor is only needed to be rotated to be disassembled, which is convenient and fast.

[0035] The above only describes the preferred embodiments of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An air compressor exhaust end cover comprising a housing (1), characterized in that: The inside of the shell (1) is provided with a bearing cavity (11) for installing a bearing seat and an exhaust port (12) below the bearing cavity (11); the inside of the exhaust port (12) is provided with a filter assembly (2); The filter assembly (2) comprises an inner cylinder (21), the outer side of which is sleeved with a secondary cylinder (22), the outer side of which is sleeved with a tertiary cylinder (23), the outer side of which is slidingly connected with the inner wall of the exhaust port (12); the materials of the inner cylinder (21), the secondary cylinder (22) and the tertiary cylinder (23) are filter cotton.

2. An air compressor exhaust end cover according to claim 1, wherein: The outer side of the inner cylinder (21) is uniformly provided with a spiral groove one (211) and a ventilation hole one (212), the rotation direction of the spiral groove one (211) is counterclockwise, and the ventilation hole one (212) is located at one end of the spiral groove one (211).

3. An air compressor exhaust end cover according to claim 2, wherein: The outer side of the secondary cylinder (22) is uniformly provided with a spiral groove two (221) and a ventilation hole two (222), the ventilation hole two (222) is through with the ventilation hole one (212), the rotation direction of the spiral groove two (221) is clockwise, the ventilation hole two (222) is located at one end of the spiral groove two (221), the outer side of the secondary cylinder (22) is uniformly provided with a square groove (223), the square groove (223) is located at the spiral groove two (221) and intersects with part of the spiral groove two (221).

4. The air compressor exhaust end cover of claim 3, wherein: The outer side of the tertiary cylinder (23) is uniformly provided with a spiral groove three (231) and a spiral groove four (232), the spiral groove four (232) is located at one end of the spiral groove three (231), the rotation direction of the spiral groove four (232) is clockwise, and the rotation direction of the spiral groove three (231) is counterclockwise.

5. An air compressor exhaust end cover according to claim 4, wherein: The bearing cavity (11) is clamped with a gas guide plate (13); the gas guide plate (13) is assembled between the bearing seat and the rotor, the gas guide plate (13) is rotationally connected with the rotating shaft of the rotor; both end faces of the gas guide plate (13) are provided with flow guide grooves (131).

6. An air compressor exhaust end cover according to claim 5, wherein: Both ends of the inner cylinder (21), the secondary cylinder (22) and the tertiary cylinder (23) are fixedly installed with mounting rings, one of the mounting rings is threadedly connected with one end of the exhaust port (12) away from the gas guide plate (13).

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