Protective cover for filter of screw air compressor

Abstract

The utility model discloses a protective cover for a filter of a screw air compressor, which relates to the technical field of air compressor equipment and comprises a screw air compressor, a filter body and a protective device. The air outlet end of the filter body is communicated with an air inlet of the screw air compressor; the protective device comprises a connecting seat and a protective net, the connecting seat is fixedly connected to the top of the screw air compressor, and the protective net covers the outer surface of the filter body and is connected with the connecting seat through a fixing device; the fixing device comprises fixing pins, through holes are formed in the two sides of the protective net in the length direction respectively, limiting holes matched with the fixing pins are formed in the connecting base, and the two fixing pins are inserted into the limiting holes respectively after penetrating through the through holes. Therefore, through the arrangement of the protection device, filtering of various air compressors is achieved, installation is simplified, and rapid replacement is achieved.

Description

Technical Field

[0001] This utility model relates to the field of air compressor equipment technology, specifically to a screw air compressor filter protective cover. Background Technology

[0002] Screw air compressors are a mature and existing technology. They are simple in structure, small in size, and stable in operation, and are widely used in many fields. The working principle of a screw air compressor is to compress air by rotating two screws, reduce the air temperature through a cooling system, and finally discharge the compressed air.

[0003] The components of a screw air compressor are highly precise, with clearances between critical parts typically ranging from 30-150μm. Therefore, the entry of foreign objects will inevitably damage the compressor. Larger particles can cause the compressor to seize up or even become unusable. To ensure normal operation, the filter needs to be replaced periodically. Some screw air compressors are used in specialized environments, such as steel mills and mines, where dust concentrations are high, necessitating frequent filter replacements. Some models rely on imported filter paper, which offers superior filtration, but frequent replacements are costly. Utility Model Content

[0004] To overcome the above-mentioned defects, the purpose of this utility model is to provide a screw air compressor filter protective cover, which, by setting a protective device, meets the filtering requirements of various air compressors, simplifies installation, and enables quick replacement.

[0005] To achieve the above objectives, this utility model provides a screw air compressor filter protective cover, including a screw air compressor, a filter body, and a protective device; the air outlet of the filter body is connected to the air inlet of the screw air compressor; the protective device includes a connecting seat and a protective net, the connecting seat is fixedly connected to the top of the screw air compressor, the protective net covers the outer surface of the filter body, and is connected to the connecting seat by a fixing device; the fixing device includes fixing pins, and through holes are respectively provided on both sides of the protective net along its length direction, and limiting holes matching the fixing pins are provided on the connecting seat, and the two fixing pins penetrate the through holes and are respectively inserted into the limiting holes.

[0006] Preferably, the fixing device further includes a fixing turntable, which is rotatably mounted on the connecting seat via a rotating shaft.

[0007] Preferably, the fixed turntable is provided with a plurality of limiting protrusions, and the protective net is clamped between the limiting protrusions and the filter body.

[0008] Preferably, the fixing device further includes an upper fixing ring and a lower fixing ring, both of which are sleeved on the outer periphery of the protective net and respectively snapped onto both ends of the filter body.

[0009] Preferably, the filter body is further provided with a reverse air blowing hole, the reverse air blowing hole extends through the length direction of the filter body, and the air inlet of the reverse air blowing hole is also connected to a reverse air blowing connector.

[0010] The beneficial technical effects achieved by this utility model after adopting the above technical solution are as follows:

[0011] 1. Because a protective cover is installed on the outside of the filter body and fixed with a fixing device, the mesh size of the protective cover can be selected according to the usage environment. Especially when the working environment is extremely harsh, primary filtration and protection can be achieved by adding a protective cover, which not only extends the service life of the filter body, but also allows for quick cleaning and replacement, resulting in high efficiency. The above process can be directly improved based on the existing filter body, so it is applicable to most models on the market. The modification process is simple, reliable, and easy to maintain, allowing the original equipment to be applied to more scenarios.

[0012] 2. The protective net is connected and temporarily fixed by inserting a limiting pin through the through hole and then inserting it into the limiting hole. It is then reinforced by upper and lower fixing rings. The above installation and disassembly process is extremely simple. More durable metal protective nets can be used directly. Replacement and subsequent cleaning are also relatively simple.

[0013] 3. Due to the setting of the limiting boss, when installing a metal protective net with a certain degree of flexibility, the limiting boss can be used to temporarily fix the protective net. By rotating the fixing turntable, the protective net can be wrapped around and fixed to the outer surface of the filter body. Then, the upper and lower fixing rings are used to fix it. The installation is more labor-saving and the stability is stronger.

[0014] 4. Because a reverse air blowing hole is set in the middle of the filter body, after connecting the reverse air blowing connector to an external air blowing device, the adhering impurities can be quickly cleaned by using the principle of reverse air blowing, so as to extend the service life of the filter body and ensure the filtration effect. Attached Figure Description

[0015] Figure 1 This is a schematic diagram showing the usage status of the screw air compressor filter protective cover of this utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the filter body in this utility model;

[0017] Figure 3This is a schematic diagram showing the usage state of the filter after installation in this utility model;

[0018] Figure 4 This is a schematic diagram of the connecting seat in this utility model;

[0019] In the diagram,

[0020] 1. Screw air compressor;

[0021] 2. Filter body; 21. Reverse air blowing port; 22. Reverse air blowing connection seat;

[0022] 3. Protective device; 31. Connecting seat; 32. Protective net; 321. Limiting pin; 33. Fixed turntable; 331. Limiting hole; 34. Limiting boss; 35. Upper fixing ring; 36. Lower fixing ring. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely for explaining the present utility model and are not intended to limit the present utility model.

[0024] See Figures 1-4 This utility model provides a protective cover for a screw air compressor filter, including a screw air compressor 1, a filter body 2, and a protective device 3; the air outlet of the filter body 2 is connected to the air inlet of the screw air compressor 1; the screw air compressor 1 is a mature existing technology, and a protective mesh 32 of appropriate material and mesh size is selected according to the size of the filter body 2. Generally, there are two types of materials for the protective mesh 32: metal protective mesh 32 is mainly used in high-temperature environments such as coke, while fiber protective mesh 32 is suitable for most scenarios.

[0025] The protective device 3 includes a connecting seat 31 and a protective net 32. The connecting seat 31 is fixedly connected to the top of the screw air compressor 1. The protective net 32 ​​covers the outer surface of the filter body 2 and is fixed to the connecting seat 31 by a fixing device. The fixing device includes fixing pins. The protective net 32 ​​has through holes on both sides along its length. The connecting seat 31 has limiting holes 331 that match the fixing pins. After the two fixing pins pass through the through holes, they are respectively inserted into the limiting holes 331. This utility model is mainly an improvement on the existing filter body 2. The connecting seat 31 is used for support. During installation, the two sides of the protective net 32 ​​are generally bent and fixed, forming through holes in the bending area. Then, the two limiting pins 321 are passed through the two through holes and inserted into the limiting holes 331 to achieve fixation. To ensure the flatness of the protective net 32 ​​and prevent the edges of the protective net 32 ​​on both sides from warping, an upper fixing ring 35 and a lower fixing ring 36 are then fitted on top. Generally, the protective net 32 ​​is installed first, and then the lower fixing ring 36 and the upper fixing ring 35 are respectively attached. In this way, the two fixing rings will be directly locked by the tension of the protective net 32.

[0026] The fixing device of this utility model also includes a fixing turntable 33, which is rotatably mounted on the connecting seat 31 via a rotating shaft. During actual installation, because the metal protective net 32 ​​is relatively rigid and not easily bent into an arc shape to fit the filter body 2, a limiting hole 331 can be set on the fixing turntable 33. First, a limiting pin 321 is inserted, and the fixing turntable 33 is slowly rotated to allow the protective net 32 ​​to fit against the outer surface of the filter body. Then, another limiting pin 321 is inserted into the limiting hole 331, and finally, a fixing ring 35 is used for fixation. To prevent the protective net 32 ​​from being stretched open by vibration after installation, multiple limiting bosses 34 are generally used for reinforcement. The limiting bosses 34 can be directly screwed onto the fixing turntable 33 using threads to ensure that the protective net 32 ​​is clamped between the limiting bosses 34 and the filter body 2.

[0027] The filter body 2 of this utility model is also provided with a reverse air blowing hole 21, which extends through the length of the filter body 2, and the air inlet of the reverse air blowing hole 21 is connected to a reverse air blowing connector 22. Since it protects and filters the air inlet of the screw air compressor 1, the high-pressure air generated by the screw air compressor 1 is connected to the reverse air blowing connector 22 and then blown into the reverse air blowing hole 21, which can directly clean impurities. This method is particularly effective in dusty environments such as coal mines, significantly extending the service life of the equipment and reducing the replacement frequency. The reverse air blowing connector 22 is generally a carrier for quick-connect couplings, which is existing technology.

[0028] Of course, there may be other embodiments of this utility model. Without departing from the spirit and essence of this utility model, those skilled in the art can make various corresponding changes and modifications based on this utility model, but these corresponding changes and modifications should all fall within the protection scope of the appended claims of this utility model.

Claims

1. A protective cover for a screw air compressor filter, characterized in that, It includes a screw air compressor, a filter body, and a protective device; the air outlet of the filter body is connected to the air inlet of the screw air compressor. The protective device includes a connecting seat and a protective net. The connecting seat is fixedly connected to the top of the screw air compressor, and the protective net covers the outer surface of the filter body and is connected to the connecting seat through a fixing device. The fixing device includes fixing pins, and through holes are provided on both sides of the protective net along its length. The connecting seat is provided with limiting holes that match the fixing pins. After the two fixing pins penetrate the through holes, they are respectively inserted into the limiting holes.

2. The screw air compressor filter protective cover according to claim 1, characterized in that, The fixing device also includes a fixed turntable, which is rotatably mounted on the connecting seat via a rotating shaft.

3. The screw air compressor filter protective cover according to claim 2, characterized in that, The fixed turntable is provided with several limiting protrusions, and the protective net is clamped between the limiting protrusions and the filter body.

4. The screw air compressor filter protective cover according to claim 3, characterized in that, The fixing device also includes an upper fixing ring and a lower fixing ring, both of which are sleeved on the outer periphery of the protective net and respectively snapped onto both ends of the filter body.

5. The screw air compressor filter protective cover according to claim 1, characterized in that, The filter body is also provided with a reverse air blowing hole, which extends through the length of the filter body, and the air inlet of the reverse air blowing hole is also connected to a reverse air blowing connector.

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