Spiral air compressor for locomotive

Abstract

The utility model discloses a spiral air compressor for a locomotive. The spiral air compressor comprises a machine body, an air inlet pipe, a primary impurity filtering mechanism and a secondary impurity filtering mechanism, the primary impurity filtering mechanism comprises an air inlet connecting pipe, an assembling lower pipe base is in threaded connection with the upper portion of the air inlet connecting pipe, an impurity filtering net cylinder is fixedly connected with the upper portion of the assembling lower pipe base, a dust cleaning frame is rotationally assembled on the outer side of the impurity filtering net cylinder, and a dust cleaning brush is attached to the side, close to the impurity filtering net cylinder, of the dust cleaning frame. The secondary impurity filtering mechanism comprises a pair of fixing rings, filter cloth is arranged between the pair of fixing rings, and the filter cloth is filled with a filter element. According to the spiral air compressor for the locomotive, due to the arrangement of corresponding structures, multi-stage impurity filtering can be conducted on air entering the spiral air compressor, the risk that a filter element is blocked by large-particle impurities is reduced, the effect of filtering the air entering the spiral air compressor is improved, and the service life of the air compressor is prolonged. And the operation stability of the spiral air compressor is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of screw air compressors, and in particular relates to a screw air compressor for locomotives. Background Art

[0002] A screw air compressor, also known as a screw air compressor, is an air compressor that compresses air by rotating a screw. Its working principle is that a pair of mutually meshing spiral rotors are arranged in parallel in the air compressor body. Usually, the rotor with convex teeth outside the pitch circle is called the male rotor or male screw, and the rotor with concave teeth inside the pitch circle is called the female rotor or female screw. Generally, the male rotor is connected to the prime mover. At both ends of the air compressor body, there are openings of certain shapes and sizes. One is for suction, called the air inlet; the other is for exhaust, called the exhaust port.

[0003] In order to ensure the service life of the screw air compressor, it is usually necessary to arrange an air filter component at the air inlet position of the screw air compressor to filter out impurities contained in the intake air, thereby reducing the subsequent impurities from having an adverse effect on the bearing service life and the meshing accuracy of the spiral rotor.

[0004] The Chinese utility model patent with publication number CN212318290U discloses a screw air compressor, which includes a body, on which are respectively provided an air inlet pipe and an air outlet pipe connected to the interior of the body; a hollow mounting pipe is provided in the air inlet pipe, and a hollow filter element is detachably installed in the mounting pipe; filter cotton is provided in the filter element: a large number of ventilation holes are opened on the surface of the filter element. The utility model has the effect of filtering dust particles sucked in from the air inlet, thereby achieving the purpose of purifying the airflow, and at the same time extending the service life of the air compressor.

[0005] However, in combination with the contents recorded in the specification and the drawings in the specification, it can be seen that during the use of a spiral air compressor disclosed in the application, the outside air enters the installation tube along the upper port of the fastening ring, and enters the body of the machine for compression and transportation after being filtered by the filter element and filter cotton. The application only uses the filter element and filter cotton to filter the air, and cannot perform graded filtration on impurities of different particle sizes contained in the air, so that the filter element and filter cotton are easily affected by large particles and become clogged during use. This not only affects the air intake efficiency of the body, but also requires the filter element and filter cotton to be frequently cleaned and maintained, and the effect of air intake filtration for the spiral air compressor is poor.

[0006] Therefore, in view of the above technical problems, it is necessary to provide a locomotive screw air compressor.

[0007] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as an admission or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. Utility Model Content

[0008] The purpose of the utility model is to provide a screw air compressor for locomotive, which can.

[0009] In order to achieve the above-mentioned purpose, a specific embodiment of the present invention provides a locomotive screw air compressor, comprising: a machine body, an air intake pipe, a first-stage impurity filtering mechanism, and a second-stage impurity filtering mechanism.

[0010] An air intake pipe is fixedly connected to the upper side of the machine body.

[0011] The first-level filtering mechanism is fixedly assembled above the air intake pipe, and the first-level filtering mechanism includes an air intake connecting pipe, which is communicated with the air intake pipe, and the upper part of the air intake connecting pipe is threadedly connected to an assembly lower pipe seat, and the upper part of the assembly lower pipe seat is fixedly connected to a filter screen cylinder, and the outer side of the filter screen cylinder is rotatably assembled with a dust cleaning rack, and a dust cleaning brush is attached to the side of the dust cleaning rack close to the filter screen cylinder.

[0012] The secondary impurity filtering mechanism is fixedly assembled in the assembly lower tube seat. The secondary impurity filtering mechanism includes a pair of fixed rings. The pair of fixed rings are fixedly assembled in the assembly lower tube seat. A filter cloth is arranged between the pair of fixed rings, and the filter cloth is filled with a filter element.

[0013] In one or more embodiments of the present invention, an exhaust pipe is fixedly connected to a side of the body away from the air inlet pipe, and the exhaust pipe is in communication with the body, through which the compressed air in the body is discharged.

[0014] In one or more embodiments of the present invention, the intake connecting pipe and the intake pipe are fixedly connected by multiple sets of evenly distributed assembly bolts. The intake connecting pipe and the intake pipe are connected and fixed by these multiple sets of assembly bolts. A fixed inner tube is integrally formed on the side of the lower assembly tube base proximal to the intake connecting pipe. The fixed inner tube is threadedly mounted within the intake connecting pipe. The lower assembly tube base is assembled and fixed by threading the fixed inner tube to the intake connecting pipe.

[0015] In one or more embodiments of the present invention, a spiral guide plate is fixedly connected to the inner wall of the filter screen cylinder. The spiral guide plate spirally guides and conveys air within the filter screen cylinder. A top cover is threadedly connected to the top of the filter screen cylinder. The top cover serves as an assembly limiter for the assembly shaft. The assembly lower pipe seat, the filter screen cylinder, and the top cover cooperate to form an air filtration chamber. The air filtration chamber provides space for air impurities removal.

[0016] In one or more embodiments of the present invention, an assembly shaft is rotatably connected above the top cover. The assembly shaft serves to secure and support the fixed connection ring. A fixed connection ring is fixedly mounted on the outer side of the assembly shaft and is fixedly connected to the dust cleaning frame. The fixed connection ring connects the assembly shaft to the dust cleaning frame, allowing the dust cleaning frame to rotate synchronously with the assembly shaft under the action of the fixed connection ring.

[0017] In one or more embodiments of the present invention, a drive impeller is fixedly connected to one end of the assembly shaft located within the air filter chamber. The drive impeller is disposed between the top cover and the fixing ring, and is disposed correspondingly to the spiral guide plate. The assembly shaft is driven and controlled by the drive impeller rotating under the action of the spiral airflow.

[0018] In one or more embodiments of the present invention, multiple sets of outer and inner support rods are fixedly connected between a pair of the fixing rings. The multiple sets of outer and inner support rods are staggered, and the filter cloth is wrapped around the outer sides of the multiple sets of outer and inner support rods. The multiple sets of outer and inner support rods tension and guide the filter cloth, thereby increasing the contact area between the filter cloth and the air and ensuring the filter cloth's effectiveness in filtering impurities from the air.

[0019] Compared with the prior art, the locomotive spiral air compressor disclosed by the utility model can perform multi-stage filtration on the air entering the spiral air compressor through the setting of corresponding structures, reducing the risk of large particles of impurities clogging the filter element, improving the effect of filtering the air entering the spiral air compressor, and ensuring the operating stability of the spiral air compressor. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are only some of the embodiments described in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without inventive efforts.

[0021] Figure 1 This is a perspective view of a locomotive screw air compressor in one embodiment of the present utility model;

[0022] Figure 2 This is a front cross-sectional view of a partial structure of a locomotive screw air compressor in one embodiment of the present utility model;

[0023] Figure 3 for Figure 2 Schematic diagram of the structure at A in the middle;

[0024] Figure 4 This is a top sectional view of a locomotive screw air compressor in one embodiment of the present utility model;

[0025] Figure 5 for Figure 4 Schematic diagram of the structure at point B in the middle.

[0026] Description of main reference numerals:

[0027] 1-body, 101-intake pipe, 102-exhaust pipe, 2-first-stage filtering mechanism, 201-intake connecting pipe, 202-assembly lower pipe seat, 203-filter mesh cylinder, 204-dust cleaning frame, 205-dust cleaning brush, 206-assembly bolts, 207-fixed inner tube, 208-spiral guide plate, 209-top cover, 210-assembly shaft, 211-fixed connecting ring, 212-driving wind wheel, 3-secondary filtering mechanism, 301-fixing ring, 302-filter cloth, 303-filter element, 304-outer support rod, 305-inner support rod. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the following will provide a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only a portion of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work should fall within the scope of protection of the present invention.

[0029] like Figures 1 to 5 As shown, a locomotive screw air compressor in one embodiment of the present invention includes: a body 1, an air intake pipe 101, a primary impurity filtering mechanism 2, and a secondary impurity filtering mechanism 3.

[0030] like Figures 1 to 2 An air intake pipe 101 is fixedly connected to the upper part of the body 1. The air intake pipe 101 connects the body 1 with the air intake connecting pipe 201, so that the outside air enters the body 1 along the air intake pipe 101 for compression.

[0031] like Figures 1 to 2 An exhaust pipe 102 is fixedly connected to the side of the body 1 away from the air inlet pipe 101, and the exhaust pipe 102 is connected to the body 1. The compressed air in the body 1 is discharged through the exhaust pipe 102.

[0032] like Figures 2 to 3As shown, the primary filter mechanism 2 is fixedly mounted above the intake pipe 101 and includes an intake connecting pipe 201, which is in communication with the intake pipe 101. The intake connecting pipe 201 connects the lower pipe base 202 to the intake pipe 101. The threaded connection between the fixed inner tube 207 and the intake connecting pipe 201 allows for convenient disassembly and cleaning of the filter screen 203.

[0033] like Figure 1 As shown, the air intake connecting pipe 201 and the air intake pipe 101 are fixedly connected by multiple groups of evenly distributed assembly bolts 206. The air intake connecting pipe 201 and the air intake pipe 101 are connected and fixed by the multiple groups of assembly bolts 206.

[0034] like Figures 2 to 3 As shown, the upper portion of the air inlet connecting pipe 201 is threadedly connected to a lower pipe seat 202. The lower pipe seat 202 supports and fixes the filter screen cylinder 203.

[0035] like Figures 2 to 3 As shown, a fixed inner tube 207 is integrally formed on one side of the assembly lower tube base 202 close to the intake connecting tube 201, and the fixed inner tube 207 is threadedly assembled in the intake connecting tube 201. The assembly lower tube base 202 is assembled and fixed by threading the fixed inner tube 207 and the intake connecting tube 201.

[0036] like Figures 1 to 3 As shown, a filter screen drum 203 is fixedly connected to the upper portion of the lower pipe seat 202. The filter screen drum 203 performs preliminary filtration of large particles of impurities contained in the air, thereby reducing the blockage caused by large particles of impurities to the filter cloth 302 and the filter element 303.

[0037] like Figures 2 to 3 As shown, a spiral guide plate 208 is fixedly connected to the inner wall of the filter net cylinder 203. The spiral guide plate 208 is used to guide and transport the air in the filter net cylinder 203 in a spiral manner.

[0038] like Figures 2 to 3 As shown, a top cover 209 is threadedly connected to the top of the filter screen cylinder 203. The top cover 209 plays a role of assembling the rotation shaft 210.

[0039] Specifically, the lower pipe seat 202, the impurity filter cylinder 203 and the top cover 209 are assembled to form an air filter chamber. The air filter chamber provides space for air impurity removal.

[0040] like Figures 2 to 3 As shown, the outer side of the filter net cylinder 203 is rotatably equipped with a dust cleaning frame 204. The dust cleaning frame 204 supports, fixes and rotates the dust cleaning brush 205.

[0041] like Figures 2 to 3 As shown, Figures 2 to 3 As shown, a dust cleaning brush 205 is attached to one side of the dust cleaning frame 204 close to the filter net cylinder 203. The large particles of impurities adhered to the outside of the filter net cylinder 203 are cleaned by the rotation of the dust cleaning brush 205.

[0042] like Figures 2 to 3 As shown, an assembly shaft 210 is rotatably connected to the top of the top cover 209. The assembly shaft 210 plays the role of assembling, fixing and supporting the fixed connection ring 211.

[0043] like Figures 2 to 3 As shown, a fixed connecting ring 211 is fixedly mounted on the outer side of the assembly shaft 210, and the fixed connecting ring 211 is fixedly connected to the dust cleaning frame 204. The fixed connecting ring 211 serves to connect the assembly shaft 210 and the dust cleaning frame 204, so that the dust cleaning frame 204 can rotate synchronously with the rotation of the assembly shaft 210 under the action of the fixed connecting ring 211.

[0044] like Figures 2 to 3 As shown, one end of the assembly shaft 210 located within the air filter chamber is fixedly connected to a driving impeller 212. The driving impeller 212 is arranged between the top cover 209 and the fixing ring 301, and the driving impeller 212 is arranged corresponding to the spiral guide plate 208. The assembly shaft 210 is driven and controlled by the driving impeller 212 rotating under the action of the spiral airflow.

[0045] like Figures 2 to 5 As shown, the secondary filter mechanism 3 is fixedly assembled in the lower assembly tube seat 202. The secondary filter mechanism 3 includes a pair of fixing rings 301, and the pair of fixing rings 301 are fixedly assembled in the lower assembly tube seat 202. The pair of fixing rings 301 play a role in assembling and fixing the filter element 303, the outer support rod 304 and the inner support rod 305.

[0046] like Figures 2 to 5 As shown, a filter cloth 302 is arranged between a pair of fixing rings 301. The filter cloth 302 is used to perform secondary filtration on the air filtered by the filter cylinder 203.

[0047] like Figures 2 to 5 As shown, the filter cloth 302 is filled with a filter element 303. The filter element 303 is used to perform auxiliary filtration on the air filtered by the filter cylinder 203.

[0048] like Figures 4 and 5As shown, multiple sets of outer support rods 304 and inner support rods 305 are fixedly connected between a pair of fixing rings 301. The multiple sets of outer support rods 304 and inner support rods 305 are arranged in a staggered manner, and the filter cloth 302 is wrapped around the outer sides of the multiple sets of outer support rods 304 and inner support rods 305. The multiple sets of outer support rods 304 and inner support rods 305 tension and guide the filter cloth 302, thereby increasing the contact area between the filter cloth 302 and the air and ensuring the filter cloth 302's ability to effectively filter impurities from the air.

[0049] During operation, the air filter 1 allows ambient air to enter the air filter chamber along the filter screen 203, where large particles of impurities in the air are initially filtered. The air filtered by the filter screen 203 flows in a spiral within the air filter chamber under the action of the spiral guide plate 208, and then enters the air filter chamber 1 for compression after being filtered by the filter cloth 302 and the filter element 303.

[0050] At the same time, since the air in the air filter chamber rises in a spiral, the driving wind wheel 212 will drive the assembly shaft 210 to rotate under the action of the spiral airflow, and the dust cleaning frame 204 will be driven to rotate by the rotation of the assembly shaft 210, so that the dust cleaning brush 205 can rotate and clean the impurities adhered to the outside of the filter mesh cylinder 203, ensuring the reliability of the filter mesh cylinder 203 in filtering the air.

[0051] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0052] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A locomotive screw air compressor, characterized in that: include: A machine body, with an air intake pipe fixedly connected to the upper portion of the machine body; A first-level filtering mechanism is fixedly assembled above the intake pipe, and the first-level filtering mechanism includes an intake connecting pipe, the intake connecting pipe is connected to the intake pipe, the upper part of the intake connecting pipe is threadedly connected to an assembly lower pipe seat, the upper part of the assembly lower pipe seat is fixedly connected to a filter screen cylinder, the outer side of the filter screen cylinder is rotatably assembled with a dust cleaning frame, and a dust cleaning brush is attached to the side of the dust cleaning frame close to the filter screen cylinder; The secondary impurity filtering mechanism is fixedly assembled in the assembly lower tube seat. The secondary impurity filtering mechanism includes a pair of fixed rings. The pair of fixed rings are fixedly assembled in the assembly lower tube seat. A filter cloth is arranged between the pair of fixed rings, and the filter cloth is filled with a filter element.

2. The locomotive screw air compressor according to claim 1, characterized in that: An exhaust pipe is fixedly connected to a side of the machine body away from the air inlet pipe, and the exhaust pipe is communicated with the machine body.

3. The locomotive screw air compressor according to claim 1, characterized in that: The air intake connecting pipe and the air intake pipe are fixedly connected by multiple groups of evenly distributed assembly bolts. A fixed inner pipe is integrally formed on one side of the assembly lower pipe seat close to the air intake connecting pipe. The fixed inner pipe is threadedly assembled in the air intake connecting pipe.

4. The locomotive screw air compressor according to claim 1, characterized in that: A spiral guide plate is fixedly connected to the inner wall of the filter screen cylinder, and a top cover is threadedly connected to the top of the filter screen cylinder. The assembled lower pipe seat, the filter screen cylinder and the top cover cooperate to form an air filter chamber.

5. The locomotive screw air compressor according to claim 4, characterized in that: An assembly shaft is rotatably connected to the top of the top cover, and a fixed connecting ring is fixedly sleeved on the outer side of the assembly shaft, and the fixed connecting ring is fixedly connected to the dust cleaning frame.

6. The locomotive screw air compressor according to claim 5, characterized in that: One end of the assembly shaft located in the air filter chamber is fixedly connected to a driving wind wheel, the driving wind wheel is arranged between the top cover and the fixing ring, and the driving wind wheel is correspondingly arranged to the spiral guide plate.

7. The locomotive screw air compressor according to claim 1, characterized in that: A plurality of groups of outer support rods and inner support rods are fixedly connected between a pair of the fixing rings. The plurality of groups of outer support rods and inner support rods are staggered and distributed, and the filter cloth is wound around the outer sides of the plurality of groups of outer support rods and inner support rods.

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