Centrifugal air compressor intake filter assembly

Abstract

The utility model discloses a centrifugal air compressor air intake filter assembly, including air intake filter assembly body, air intake filter assembly body installs at the end of compressor air intake pipe, and air intake filter assembly body end part is provided with main filter seat, the end fixedly connected with prefilter seat of main filter seat, and the inside of prefilter seat is provided with prefilter board, and the inside connection of main filter seat has main filter board. This centrifugal air compressor air intake filter assembly, the big hard particle or flexible sundry impact on prefilter board, avoid direct impact on main filter board, will not to the local breakage of filter material on main filter board, while avoid the impurity that has not been filtered will directly enter compressor main machine inside, prefilter board can effectively avoid this kind of situation to occur, maintain compressor air intake pipe is relatively stable and low resistance intake state, ensure that compressor can efficiently, stably operate.

Description

Technical Field

[0001] This utility model relates to the field of air compressor accessories, specifically an intake filter assembly for a centrifugal air compressor. Background Technology

[0002] The core working principle of a centrifugal air compressor is: the compressor drives the compression component to draw in air from the environment and pressurize it to obtain compressed air that meets the pressure and flow requirements. In this process, some compressors also integrate air filtration, noise reduction and thermal management functions to remove impurities in the air, reduce operating noise and control temperature.

[0003] Air compressors typically have a filter installed at the air intake to filter particulate impurities in the gas. There is usually no pre-filtration structure in front of the air intake. Larger hard particles (such as sand) or flexible debris (such as plastic sheets) may directly impact or become entangled in the main filter element, potentially causing localized damage to the filter media. Once the main filter is damaged, all unfiltered impurities will directly enter the compressor unit, causing abrasive wear and scratches on core components such as the screw rotor, cylinder, and bearings. Utility Model Content

[0004] The purpose of this invention is to provide an intake filter assembly for a centrifugal air compressor to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, a centrifugal air compressor intake filter assembly is provided, including an intake filter assembly body, which is installed at the end of the compressor intake pipe, and a main filter seat is provided at the end of the intake filter assembly body. A pre-filter seat is fixedly connected to the end of the main filter seat, and a pre-filter plate is provided inside the pre-filter seat. At the same time, a main filter plate is connected inside the main filter seat.

[0006] Furthermore, the main filter base includes a connecting pipe, a docking seat, and a positioning seat, and the docking seat is fixedly connected to the end of the connecting pipe. The docking seat has an accommodating area inside, and five sets of positioning seats are installed equidistantly inside the accommodating area.

[0007] Furthermore, the docking seat and the main filter plate are in a concentric circle structure, and the main filter plate is installed inside the receiving area and positioned and installed by five sets of positioning grooves and positioning seats.

[0008] Furthermore, the main filter plate includes positioning grooves and fine filter holes, and five sets of positioning grooves are provided on the outer circumferential wall of the main filter plate, while multiple sets of fine filter holes are provided at equal intervals on the main filter plate.

[0009] Furthermore, both the positioning groove and the positioning seat are arc-shaped, and the depth of the positioning groove is consistent with the height of the positioning seat.

[0010] Furthermore, the pre-filter seat includes an air inlet, a slot, a receiving slot, and a pressure seat, and the pre-filter seat is provided with an air inlet at its end. The bottom of the pre-filter seat is fixedly provided with a pressure seat, and the bottom of the pressure seat is snapped onto the outer surface of the main filter plate.

[0011] Furthermore, the bottom inner side of the pre-filter seat is provided with five sets of slots and receiving slots at equal intervals, and the slots and receiving slots are connected. The pre-filter plate inside the pre-filter seat includes pre-filter holes and slot blocks.

[0012] Furthermore, the pre-filter plate has multiple sets of pre-filter holes equidistantly arranged in the middle, and the pre-filter holes are triangular in shape. Five sets of locking blocks are equidistantly installed at the bottom of the pre-filter plate, and the locking blocks are inserted into the inside of the receiving groove and screwed into the slot. The cross-section of the locking blocks and the slot is triangular, and the cross-section of the receiving groove is rectangular.

[0013] Compared with the prior art, the beneficial effects of this utility model are: 1. This solution features multiple sets of pre-filter holes evenly spaced on a pre-filter plate and multiple sets of fine filter holes evenly spaced on the main filter plate. The size of the fine filter holes is smaller than that of the pre-filter holes. The pre-filter plate reduces the filtration pressure on the main filter plate. Larger hard particles or flexible debris impact the pre-filter plate instead of directly impacting the main filter plate, thus preventing localized damage to the filter media on the main filter plate. Simultaneously, it prevents unfiltered impurities from directly entering the compressor unit. The pre-filter plate effectively avoids this situation, maintaining a relatively stable and low-resistance intake state in the compressor's intake pipe, ensuring efficient and stable compressor operation. 2. This solution achieves a detachable connection between the pre-filter plate and the filter base via a locking block, a locking groove, and a receiving groove. Disassembly is simple: just rotate the pre-filter plate in the opposite direction to rotate the locking block from the locking groove back into the receiving groove, and then pull it out. No complicated tools are required, making the operation easy. The pre-filter plate can be removed periodically for cleaning or replacement, reducing maintenance time. At the same time, the locking structure between the pressure base and the main filter plate also facilitates the disassembly and assembly of the main filter plate, reducing the overall maintenance difficulty and operating cost of the filter assembly. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of an air compressor; Figure 2 This is a front view schematic diagram of the structure of this utility model; Figure 3 This is a side view of the main body of the air intake filter assembly of this utility model. Figure 4 This is a cross-sectional view of the main body of the air intake filter assembly of this utility model. Figure 5 for Figure 4 The front view; Figure 6This is a bottom view of the main body of the air intake filter assembly of this utility model. Figure 7 This is a schematic diagram of the pre-filter base and its connection structure of this utility model.

[0015] The following labels are used in the diagram: 100, compressor intake pipe; 200, intake filter assembly body; 21, main filter seat; 211, connecting pipe; 212, docking seat; 213, positioning seat; 22, pre-filter seat; 221, air inlet; 222, slot; 2221, receiving groove; 223, pressure seat; 23, pre-filter plate; 231, pre-filter hole; 232, locking block; 24, main filter plate; 241, positioning groove; 242, fine filter hole. Detailed Implementation

[0016] Please see Figure 1-7 This utility model provides an intake filter assembly for a centrifugal air compressor, including an intake filter assembly body 200. The intake filter assembly body 200 is installed at the end of the compressor intake pipe 100, and a main filter seat 21 is provided at the end of the intake filter assembly body 200. A pre-filter seat 22 is fixedly connected to the end of the main filter seat 21, and a pre-filter plate 23 is provided inside the pre-filter seat 22. At the same time, a main filter plate 24 is connected inside the main filter seat 21.

[0017] Working principle: When the compressor intake pipe 100 is intake, an intake filter assembly body 200 is installed on the outside of the compressor intake pipe 100. The filter structure in the intake filter assembly body 200 mainly includes a pre-filter plate 23 and a main filter plate 24. The pre-filter plate 23 has multiple sets of pre-filter holes 231 evenly spaced, and the main filter plate 24 has multiple sets of fine filter holes 242 evenly spaced. The size of the fine filter holes 242 is smaller than the size of the pre-filter holes 231. The setting of the pre-filter plate 23 can reduce the filtration pressure of the main filter plate 24. Larger hard particles or flexible debris impact the pre-filter plate 23, avoiding direct impact on the main filter plate 24 and preventing local damage to the filter material on the main filter plate 24; thus preventing unfiltered impurities from directly entering the compressor host.

[0018] In a preferred embodiment, the main filter base 21 includes a connecting pipe 211, a docking seat 212, and a positioning seat 213. The docking seat 212 is fixedly connected to the end of the connecting pipe 211. The docking seat 212 has an accommodating area inside, and five sets of positioning seats 213 are installed equidistantly inside the accommodating area.

[0019] The docking seat 212 and the main filter plate 24 are in a concentric circle structure, and the main filter plate 24 is installed inside the receiving area and positioned and installed by five sets of positioning slots 241 and positioning seats 213.

[0020] The main filter plate 24 includes positioning grooves 241 and fine filter holes 242. Five sets of positioning grooves 241 are provided on the outer circumference of the main filter plate 24, and multiple sets of fine filter holes 242 are provided at equal intervals on the main filter plate 24.

[0021] Both the positioning groove 241 and the positioning seat 213 are arc-shaped, and the depth of the positioning groove 241 is the same as the height of the positioning seat 213.

[0022] like Figure 2-4 As shown: From the perspective of protecting the main filter plate 24 and extending its service life, the impurity particles in the air vary in size. The multiple sets of pre-filter holes 231 evenly spaced on the pre-filter plate 23 are relatively large, which can intercept larger impurities in the air, such as larger dust particles and debris. This significantly reduces the number of impurities entering the main filter plate 24. The multiple sets of fine filter holes 242 evenly spaced on the main filter plate 24 are smaller than the pre-filter holes 231 and are responsible for filtering even finer impurities. Without the pre-filter plate 23, the main filter plate 24 would have to directly face all impurities. The fine pores 242 of the main filter plate 24 are easily clogged by large particles of impurities, causing a rapid decline in the filtration performance of the main filter plate 24 and a significant reduction in its service life. With the pre-filter plate 23 providing protection, the cleaning cycle of the main filter plate 24 is extended, and the replacement frequency is reduced. This not only saves maintenance costs but also reduces equipment downtime caused by replacing the main filter plate 24, improving production efficiency. Furthermore, in terms of reducing the intake resistance of the compressor intake pipe 100 and ensuring smooth airflow, the pre-filter plate 23 performs preliminary air filtration, reducing the need for subsequent processing by the main filter plate 24. The pre-filter plate 23 ensures smoother airflow through the entire filter structure. Without it, a large amount of impurities would concentrate at the main filter plate 24, increasing the pressure difference before and after the main filter plate 24 and significantly raising the intake resistance. The pre-filter plate 23 effectively prevents this from happening, maintaining a relatively stable and low-resistance intake state in the compressor intake pipe 100, ensuring efficient and stable compressor operation. Regarding improving the overall operational stability of the compressor and reducing the probability of malfunctions, excessive impurities entering the compressor can cause wear and scratches on critical components such as the rotor, cylinder, and bearings, and in severe cases, even cause component jamming, preventing the compressor from functioning properly. The filter structure formed by the pre-filter plate 23 and the main filter plate 24 effectively reduces the impurity content entering the compressor, greatly reducing the risk of damage to internal compressor components. This ensures the normal operation of all internal compressor components, extends the compressor's overhaul cycle and overall service life, reduces production interruption losses due to equipment failure, and improves the stability and reliability of the entire production system.

[0023] In a preferred embodiment, the pre-filter seat 22 includes an air inlet 221, a slot 222, a receiving groove 2221, and a pressure seat 223. The air inlet 221 is provided at the end of the pre-filter seat 22, and the pressure seat 223 is fixedly provided at the bottom of the pre-filter seat 22. The bottom of the pressure seat 223 is snapped onto the outer surface of the main filter plate 24.

[0024] Five sets of slots 222 and receiving slots 2221 are equidistantly provided on the inner bottom of the pre-filter base 22, and the slots 222 and receiving slots 2221 are connected. The pre-filter plate 23 inside the pre-filter base 22 includes pre-filter holes 231 and slot blocks 232.

[0025] The pre-filter plate 23 has multiple sets of pre-filter holes 231 equidistantly arranged in the middle, and the pre-filter holes 231 are triangular. Five sets of locking blocks 232 are equidistantly installed at the bottom of the pre-filter plate 23. The locking blocks 232 are inserted into the inside of the receiving groove 2221 and screwed into the inside of the locking slot 222. The receiving groove 2221 has a rectangular cross-section.

[0026] like Figure 4-7 As shown: Five sets of slots 222 and receiving grooves 2221 are equidistantly arranged on the inner side of the bottom of the filter base 22. The five sets of locking blocks 232 at the bottom of the pre-filter plate 23 are first inserted into the receiving grooves 2221 and then screwed into the slots 222. The insertion and screwing fixing method effectively prevents the pre-filter plate 23 from shifting under the impact of airflow. The cross-section of the locking blocks 232 and the slots 222 are both triangular. The triangular structure has high strength and stability, which further improves the firmness of the connection between the pre-filter plate 23 and the filter base 22. The cross-section of the receiving groove 2221 is rectangular. The rectangular space can accommodate the locking blocks 232, providing stable guidance for the subsequent screwing steps and ensuring accurate installation position.

[0027] The pressure seat 223 at the bottom of the filter holder 22 is snapped onto the outer surface of the main filter plate 24, which can limit and fix the main filter plate 24, so that after the entire filter assembly is installed on the outside of the compressor intake pipe 100, the components are not easy to loosen, ensuring the overall stability of the filter structure. To optimize the air intake and filtration effect and improve filtration efficiency, the filter holder 22 has an air inlet 221 at the end, which can guide the air to enter the filter assembly precisely, avoiding airflow dispersion that could lead to filtration omissions. Multiple sets of triangular pre-filter holes 231 are equidistantly opened in the middle of the pre-filter plate 23. Compared with circular holes, the triangular hole structure has stronger hole wall support under the same opening area, and is not easily deformed by airflow pressure. At the same time, the equidistant distribution design allows the air to pass through the pre-filter plate 23 evenly, ensuring that each pre-filter hole 231 can fully play its preliminary filtration role, intercepting large particulate impurities, reducing the filtration pressure on the subsequent main filter plate 24, and indirectly improving the overall filtration efficiency. The pre-filter plate 23 and the filter base 22 are detachably connected via a locking block 232, a locking groove 222, and a receiving groove 2221. Disassembly is simple: just rotate the pre-filter plate 23 in the opposite direction to rotate the locking block 232 back from the locking groove 222 to the receiving groove 2221, and then pull it out. No complicated tools are required, making operation easy. This facilitates the periodic removal of the pre-filter plate 23 for cleaning or replacement, reducing maintenance time. Simultaneously, the locking structure between the pressure base 223 and the main filter plate 24 also facilitates the disassembly and assembly of the main filter plate 24, reducing the overall maintenance difficulty and operating cost of the filter assembly. After the locking block 232 is inserted into the locking groove 222, a fixing bolt is passed through the through hole in the locking block 232 and screwed into the screw hole at the bottom of the locking groove 222, preventing the pre-filter plate 23 from shaking during operation.

Claims

1. An intake filter assembly for a centrifugal air compressor, comprising an intake filter assembly body (200), characterized in that: The intake filter assembly body (200) is installed at the end of the compressor intake pipe (100), and the intake filter assembly body (200) is provided with a main filter seat (21) at the end. A pre-filter seat (22) is fixedly connected to the end of the main filter seat (21), and a pre-filter plate (23) is provided inside the pre-filter seat (22). At the same time, a main filter plate (24) is connected inside the main filter seat (21).

2. The centrifugal air compressor intake filter assembly according to claim 1, characterized in that: The main filter seat (21) includes a connecting pipe (211), a docking seat (212) and a positioning seat (213). The docking pipe (211) is fixedly connected to the end of the docking seat (212). The docking seat (212) has an accommodating area inside, and five sets of positioning seats (213) are installed equidistantly inside the accommodating area.

3. The centrifugal air compressor intake filter assembly according to claim 2, characterized in that: The docking seat (212) and the main filter plate (24) are in a concentric circle structure, and the main filter plate (24) is installed inside the accommodating area and positioned and installed by five sets of positioning slots (241) and positioning seats (213).

4. The centrifugal air compressor intake filter assembly according to claim 3, characterized in that: The main filter plate (24) includes a positioning groove (241) and fine filter holes (242). Five sets of positioning grooves (241) are provided on the outer circumference of the main filter plate (24), and multiple sets of fine filter holes (242) are provided at equal intervals on the main filter plate (24).

5. The centrifugal air compressor intake filter assembly according to claim 4, characterized in that: Both the positioning groove (241) and the positioning seat (213) are arc-shaped, and the depth of the positioning groove (241) is consistent with the height of the positioning seat (213).

6. The centrifugal air compressor intake filter assembly according to claim 1, characterized in that: The pre-filter seat (22) includes an air inlet (221), a slot (222), a receiving slot (2221), and a pressure seat (223). The pre-filter seat (22) is provided with an air inlet (221) at its end. The bottom of the pre-filter seat (22) is fixedly provided with a pressure seat (223), and the bottom of the pressure seat (223) is snapped onto the outer surface of the main filter plate (24).

7. The centrifugal air compressor intake filter assembly according to claim 6, characterized in that: The bottom inner side of the pre-filter seat (22) is provided with five sets of slots (222) and receiving slots (2221) at equal intervals, and the slots (222) and receiving slots (2221) are connected. The pre-filter plate (23) inside the pre-filter seat (22) includes pre-filter holes (231) and card blocks (232).

8. The centrifugal air compressor intake filter assembly according to claim 7, characterized in that: The pre-filter plate (23) has multiple sets of pre-filter holes (231) equidistantly arranged in the middle, and the pre-filter holes (231) are triangular. Five sets of locking blocks (232) are equidistantly installed at the bottom of the pre-filter plate (23), and the locking blocks (232) are inserted into the inside of the receiving groove (2221) and screwed into the locking slot (222). The cross-section of the locking blocks (232) and the locking slot (222) is triangular, and the cross-section of the receiving groove (2221) is rectangular.

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