Multi-layer air filtering device for air compressor

Abstract

The invention relates to the technical field of filtering, in particular to a multilayer air filtering device for an air compressor, which comprises an annular pipe, an air inlet pipe, an air outlet pipe, a filter element, an electromagnetic valve and the like, the middles of the two sides of the annular pipe communicate with an air inlet pipe and an air outlet pipe; the air inlet pipe is aligned with the air outlet pipe; the interior of the annular pipe is divided into a first flow channel and a second flow channel with the axis of the air inlet pipe as a boundary, and the first flow channel and the second flow channel communicate with each other. A filter element is mounted in the first flow channel; electromagnetic valves are mounted at two ends of the first flow channel, and the two electromagnetic valves are respectively used for controlling the first flow channel to be disconnected with and communicated with the air inlet pipe and the air outlet pipe; a structure which is the same as that of the first flow channel is mounted in the second flow channel, and the structures in the first flow channel and the second flow channel are symmetrically arranged. By arranging the first flow channel, the second flow channel and the electromagnetic valve for control, when the filter element of one flow channel is blocked, the clean filter element of the other flow channel can be quickly switched to continue working, shutdown cleaning or filter element replacement is avoided, and production continuity is guaranteed.

Description

Technical Field

[0001] The present invention relates to the field of filtering technology, in particular to a multi-layer air filtering device for an air compressor. Background Art

[0002] In industrial production, air compressors are the core equipment for providing compressed air, and their operating stability has a significant impact on production efficiency and equipment life. During operation, air compressors inhale ambient air, which inevitably contains pollutants such as dust, oil mist, and moisture. If these impurities enter the compression system directly without being effectively filtered, they will not only accelerate equipment wear and cause lubricating oil deterioration, but may also affect the normal operation of downstream air-using equipment. Therefore, air filtration devices have become an indispensable key component in air compressor systems.

[0003] At present, common air filter devices use their filter element structure and filter medium to intercept particulate matter in the air; however, existing filter devices have significant deficiencies in actual application; when the amount of pollutants adsorbed by the filter element reaches a certain level, the filtration resistance increases, causing the air compressor energy consumption to increase or the air intake volume to decrease. At this time, the filter device must be shut down and disassembled for cleaning or replacement of the filter element; this maintenance process is not only time-consuming and labor-intensive, but also interrupts the production process, which is particularly inconvenient in industrial scenarios with continuous operations; in addition, traditional filter devices lack online maintenance functions and are unable to remove pollutants accumulated on the surface of the filter element during operation, forcing users to frequently replace the filter element, further increasing maintenance costs. Summary of the Invention

[0004] In order to overcome the defect that the existing air filter device must be shut down for maintenance when the filter element is clogged, which seriously affects production continuity and increases maintenance costs, the present invention provides a multi-layer air filter device for an air compressor.

[0005] The technical solution of the present invention is: a multi-layer air filtering device for an air compressor, comprising an annular tube, an air inlet pipe and an air outlet pipe; the middle parts of both sides of the annular tube are respectively connected with the air inlet pipe and the air outlet pipe; the air inlet pipe is aligned with the air outlet pipe; it also includes a filter element, a solenoid valve and a cleaning assembly; the annular tube is divided into a first flow channel and a second flow channel by the axis of the inlet pipe, and the first flow channel and the second flow channel are connected to each other; a filter element is installed in the first flow channel; solenoid valves are installed at both ends of the first flow channel, and the two solenoid valves are respectively used to control the blocking and connection of the first flow channel with the air inlet pipe and the air outlet pipe; the second flow channel is installed with a structure identical to the first flow channel, and the structures in the first flow channel and the second flow channel are symmetrically arranged; the two solenoid valves in the second flow channel are respectively used to control the blocking and connection of the second flow channel with the air inlet pipe and the air outlet pipe; a cleaning assembly for convenient cleaning of the filter element is connected to the annular tube.

[0006] As a preferred technical solution of the present invention, the cleaning component includes a diverter pipe, an exhaust pipe, a turntable and a block; the side of the annular pipe adjacent to the exhaust pipe is connected to two diverter pipes for air flow backflow cleaning filter elements, and the diverter pipes are corrugated hoses; the two diverter pipes are respectively connected to the first flow channel and the second flow channel; the first flow channel and the second flow channel are both connected to the exhaust pipe on the side away from the diverter pipe; the center of the annular pipe is rotatably connected to the turntable; four blocks are fixed to the turntable through connecting rods; the block is located in the annular pipe, and an avoidance groove is provided on the annular pipe for the movement of the connecting rod of the block, and a sleeve is installed on each avoidance groove, which is sealed with the turntable to ensure the sealing of the annular pipe; two of the blocks are used to block the connecting openings between the first flow channel and the diverter pipe and the exhaust pipe, and the other two blocks are used to block the connecting openings between the second flow channel and the diverter pipe and the exhaust pipe.

[0007] As a preferred technical solution of the present invention, the stopper is made of rubber.

[0008] As a preferred technical solution of the present invention, a handle is provided on the turntable.

[0009] As a preferred technical solution of the present invention, a wind speed sensor is provided in the air outlet pipe.

[0010] As a preferred technical solution of the present invention, it also includes a connecting rod; the filter element is a multi-layer filter cartridge that can be telescopically folded in the axial direction, and its end facing the air inlet pipe is fixed to the annular tube, and the end facing the air outlet pipe can slide in the annular tube; a connecting rod is connected between the end of each filter element facing the air outlet pipe and the connecting rod of the block.

[0011] As a preferred technical solution of the present invention, the connecting rod is made of medium carbon alloy steel.

[0012] As a preferred technical solution of the present invention, it also includes an airbag; an airbag is installed between each exhaust pipe and the air inlet pipe; the connecting end between the airbag and the exhaust pipe is the air inlet end, and the other end is the air outlet end; the air inlet end of the airbag is provided with a one-way air valve, and the air outlet end is provided with an exhaust valve.

[0013] As a preferred technical solution of the present invention, a filter is provided at the air inlet end of the airbag.

[0014] As a preferred technical solution of the present invention, the airbag is detachably connected to the air inlet pipe and the exhaust pipe.

[0015] Beneficial effect: By setting the first flow channel, the second flow channel and the solenoid valve control, the present invention can quickly switch to the clean filter element of the other flow channel to continue working when the filter element of one flow channel is blocked, avoiding shutdown for cleaning or replacement of the filter element and ensuring production continuity; The filter element is backwashed and cleaned by using the diverter pipe and exhaust pipe. The airflow flushes the filter element in the opposite direction to remove the adsorbed pollutants. There is no need to disassemble the filter device, which significantly reduces maintenance costs and time. The linkage design between the connecting rod and the retractable filter element stretches the filter element during the cleaning process, promoting the removal of pollutants and improving cleaning efficiency. An air bag is added to store energy using part of the airflow discharged from the exhaust pipe, and the intake pipe is regularly blown in reverse to prevent blockage of the intake pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the installation and use of the multi-layer air filter device for an air compressor disclosed in the present invention; Figure 2 This is a schematic diagram of the three-dimensional structure of the multi-layer air filter device for an air compressor disclosed in the present invention; Figure 3 This is a schematic diagram of the internal three-dimensional structure of the multi-layer air filter device for an air compressor disclosed in the present invention.

[0017] Markings in the figure are: 1-annular tube, 1001-first flow channel, 1002-second flow channel, 2-inlet pipe, 3-outlet pipe, 4-filter element, 5-solenoid valve, 6-diverter pipe, 7-exhaust pipe, 8-turntable, 8001-handle, 9-stopper, 10-connecting rod, 11-airbag. DETAILED DESCRIPTION

[0018] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments, but this does not limit the present invention.

[0019] Example 1, a multi-layer air filter device for an air compressor, such as Figure 1-Figure 3 As shown, it includes an annular tube 1, an air inlet pipe 2 and an air outlet pipe 3; the right side of the annular tube 1 is connected to the air inlet pipe 2, and the left side is connected to the air outlet pipe 3; the air inlet pipe 2 is aligned with the air outlet pipe 3; It also includes a filter element 4, a solenoid valve 5 and a cleaning component; the annular tube 1 is divided into a first flow channel 1001 and a second flow channel 1002 by the axis of the intake pipe 2, and the first flow channel 1001 and the second flow channel 1002 are connected to each other; a filter element 4 is installed in the first flow channel 1001; solenoid valves 5 are installed at both ends of the first flow channel 1001, and the two solenoid valves 5 are respectively used to control the blocking and connection of the first flow channel 1001 with the intake pipe 2 and the outlet pipe 3; the second flow channel 1002 is installed with the same structure as the first flow channel 1001, and the structures in the first flow channel 1001 and the second flow channel 1002 are symmetrically arranged; the two solenoid valves 5 in the second flow channel 1002 are respectively used to control the blocking and connection of the second flow channel 1002 with the intake pipe 2 and the outlet pipe 3; a cleaning component is connected to the annular tube 1.

[0020] The cleaning component includes a diverter pipe 6, an exhaust pipe 7, a turntable 8 and a block 9; the side of the annular pipe 1 adjacent to the air outlet pipe 3 is connected to two diverter pipes 6, and the diverter pipe 6 is a corrugated hose; the two diverter pipes 6 are respectively connected to the first flow channel 1001 and the second flow channel 1002; the first flow channel 1001 and the second flow channel 1002 are both connected to the exhaust pipe 7 on the side away from the diverter pipe 6; the center of the annular pipe 1 is rotatably connected to the turntable 8; four blocks 9 are fixed to the turntable 8 by connecting rods; the block 9 is located in the annular pipe 1, and an avoidance groove for the connecting rod of the block 9 to move is opened on the annular pipe 1, and a sleeve is installed on each avoidance groove, which is sealed with the turntable 8 to ensure the sealing of the annular pipe 1; two of the blocks 9 are used to block the connecting ports between the first flow channel 1001 and the diverter pipe 6 and the exhaust pipe 7, and the other two blocks 9 are used to block the connecting ports between the second flow channel 1002 and the diverter pipe 6 and the exhaust pipe 7.

[0021] The stopper 9 is made of rubber to improve the sealing performance.

[0022] A handle 8001 is provided on the turntable 8 to facilitate the operator to rotate the turntable 8.

[0023] A wind speed sensor is provided in the air outlet pipe 3 for real-time monitoring of the wind speed entering the air compressor through the air outlet pipe 3, thereby inferring whether the filter element 4 is blocked.

[0024] It also includes a connecting rod 10; the filter element 4 is a multi-layer filter cartridge that is telescopically foldable in the axial direction, and its end facing the air inlet pipe 2 is fixed to the annular tube 1, and the end facing the air outlet pipe 3 can slide in the annular tube 1; a connecting rod 10 is connected between the end of each filter element 4 facing the air outlet pipe 3 and the connecting rod of the block 9.

[0025] The connecting rod 10 is made of medium carbon alloy steel; it has high corrosion resistance and high structural strength, which can increase the service life.

[0026] When using this device, if Figure 1 As shown, the air outlet pipe 3 is fixedly connected to the air inlet of the air compressor. After the air compressor is started, the outside air is sucked in from the air inlet pipe 2. After the pollutants in the air are filtered by the filter element 4 of the annular tube 1, the air flow enters the air compressor from the air outlet pipe 3, thereby maintaining the normal operation of the air compressor.

[0027] When the amount of pollutants adsorbed by the filter element 4 reaches a certain level, the filtration resistance increases, resulting in an increase in the energy consumption of the air compressor or a decrease in the air intake volume. At this time, the filter element 4 needs to be cleaned. Therefore, a first flow channel 1001 and a second flow channel 1002 are provided in the annular pipe 1. In the initial working state, the two solenoid valves 5 in the first flow channel 1001 are opened, and the two solenoid valves 5 in the second flow channel 1002 are closed, so that the outside air passes through the air inlet pipe 2, flows through the first flow channel 1001, enters the air outlet pipe 3, and then enters the air compressor. In this process, the air passes through the first flow channel 1001. 01 filters the pollutants in the air, and since the second flow channel 1002 is blocked by the corresponding solenoid valve 5, the filter element 4 in the flow channel does not work; when the pollutants adsorbed by the filter element 4 in the first flow channel 1001 reach a certain amount, the solenoid valve 5 of the first flow channel 1001 is closed and the solenoid valve 5 of the second flow channel 1002 is opened, thereby switching the filtration channel from the first flow channel 1001 to the second flow channel 1002, and the clean filter element 4 in the second flow channel 1002 performs the filtering work to maintain the stable operation of the air compressor.

[0028] After switching the filter channel, the filter element 4 in the first flow channel 1001 needs to be cleaned to ensure that it can be used again in subsequent work. Therefore, a diverter pipe 6 and an exhaust pipe 7 are added, and the diverter pipe 6 is connected to the air outlet pipe of the air compressor. Part of the airflow output from the air outlet pipe of the air compressor enters the first flow channel 1001 through the diverter pipe 6, and then is discharged to the outside from the corresponding exhaust pipe 7. In this process, the airflow back-blows and cleans the filter element 4, blowing away the pollutants adsorbed in the last work, and the pollutants are discharged from the exhaust pipe 7 with the airflow. In the above manner, the filter element 4 can be conveniently cleaned without disassembling the filter device, without stopping for maintenance, thereby ensuring production continuity and reducing maintenance costs.

[0029] In the above work, the staff rotates the turntable 8 in advance to drive the block 9 to move, so as to switch the connection status between the first flow channel 1001 and the second flow channel 1002 and the diverter pipe 6 and the exhaust pipe 7. Specifically, when backflushing and cleaning the filter element 4 in the first flow channel 1001, the turntable 8 is rotated so that the block 9 no longer blocks the connection between the first flow channel 1001 and the diverter pipe 6 and the exhaust pipe 7. At the same time, the rotation of the turntable 8 causes the block 9 in the second flow channel 1002 to move synchronously, so that it blocks the connection between the second flow channel 1002 and the diverter pipe 6 and the exhaust pipe 7, thereby preventing the diverted airflow from interfering with the normal circulation in the second flow channel 1002.

[0030] On the basis of the above work content, in order to improve the cleaning effect of the diverted airflow on the filter element 4, the connecting rod of the filter element 4 and the block 9 is connected by a connecting rod 10. When the block 9 moves away from the filter element 4 and releases the connection between the corresponding flow channel and the diverter pipe 6, the block 9 pulls the filter element 4 through the connecting rod 10, so that one end of the filter element 4 slides in the flow channel, and since the other end of the filter element 4 is fixed to the current flow channel, in this process, the filter element 4 is stretched as a whole, so that it is expanded axially, which promotes the pollutants adsorbed on the filter element 4 to fall off under the action of the airflow, thereby enhancing the cleaning effect of the diverted airflow on the filter element 4.

[0031] Example 2, based on Example 1, Figure 3 As shown, an airbag 11 is also included; an airbag 11 is installed between each exhaust pipe 7 and the air inlet pipe 2; the connecting end between the airbag 11 and the exhaust pipe 7 is the air inlet end, and the other end is the air outlet end; the air inlet end of the airbag 11 is provided with a one-way air valve, and the air outlet end is provided with an exhaust valve.

[0032] A filter is provided at the air inlet end of the airbag 11 to prevent the airflow in the exhaust pipe 7 from carrying pollutants into the airbag 11 .

[0033] The airbag 11 is detachably connected to the air intake pipe 2 and the exhaust pipe 7; the airbag 11 can be quickly disassembled for replacement or maintenance, and the filter at the air intake end of the airbag 11 can also be cleaned.

[0034] In view of the fact that after long-term operation, the air intake pipe 2 may be blocked by external dust and impurities. If the air intake pipe 2 is blocked, it will directly affect the air intake effect of the device. Therefore, the air intake pipe 2 needs to be cleaned regularly; therefore, an air bag 11 is added between the exhaust pipe 7 and the air intake pipe 2. During the back-flushing cleaning of the filter element 4, part of the air flow discharged from the exhaust pipe 7 will pass through the one-way air valve at the air intake end of the air bag 11 and enter the air bag 11 for storage. After each production shutdown, all the solenoid valves 5 are first controlled to close to block the connection between the air intake pipe 2 and the first flow channel 1001 and the second flow channel 1002, and then the exhaust valve at the air outlet end of the air bag 11 is opened to allow the gas stored in the air bag 11 to enter the air intake pipe 2 and then be discharged from the inlet of the air intake pipe 2, thereby realizing daily cleaning of the air intake pipe 2 and avoiding long-term accumulation of dust and impurities in the air intake pipe 2 and causing blockage.

[0035] Those skilled in the art should understand that the above embodiments do not limit the present invention in any form, and any technical solutions obtained by equivalent replacement or equivalent transformation fall within the protection scope of the present invention.

Claims

1. A multi-layer air filter device for an air compressor, comprising an annular tube (1), an air inlet tube (2) and an air outlet tube (3); the air inlet tube (2) and the air outlet tube (3) are connected to each other at the middle of both sides of the annular tube (1); the air inlet tube (2) and the air outlet tube (3) are aligned; and the device is characterized in that: The invention also includes a filter element (4), a solenoid valve (5) and a cleaning component; the annular tube (1) is divided into a first flow channel (1001) and a second flow channel (1002) by the axis of the intake pipe (2); the first flow channel (1001) and the second flow channel (1002) are connected to each other; a filter element (4) is installed in the first flow channel (1001); solenoid valves (5) are installed at both ends of the first flow channel (1001), and the two solenoid valves (5) are used to control the first flow channel (1001) and the intake pipe respectively. (2) and the blocking and connection of the air outlet pipe (3); the second flow channel (1002) is equipped with a structure identical to that of the first flow channel (1001), and the structures in the first flow channel (1001) and the second flow channel (1002) are symmetrically arranged; the two solenoid valves (5) in the second flow channel (1002) are respectively used to control the blocking and connection of the second flow channel (1002) with the air inlet pipe (2) and the air outlet pipe (3); a cleaning component for conveniently cleaning the filter element (4) is connected to the annular pipe (1).

2. The multi-layer air filter device for an air compressor according to claim 1, characterized in that: The cleaning component comprises a diverter pipe (6), an exhaust pipe (7), a turntable (8) and a block (9); the side of the annular pipe (1) adjacent to the exhaust pipe (3) is connected to two diverter pipes (6) for airflow backflow cleaning filter element (4), and the diverter pipes (6) are corrugated hoses; the two diverter pipes (6) are respectively connected to the first flow channel (1001) and the second flow channel (1002); the side of the first flow channel (1001) and the second flow channel (1002) away from the diverter pipe (6) are both connected to the exhaust pipe (7); the center of the annular pipe (1) is rotatably connected to the turntable (8); the turntable ( Four blocks (9) are fixedly connected to the annular tube (8) through connecting rods; the blocks (9) are located in the annular tube (1), and an avoidance groove for the connecting rod of the blocks (9) to move is opened on the annular tube (1), and a sleeve is installed on each avoidance groove, and the sleeve is sealed with the turntable (8) to ensure the sealing of the annular tube (1); two of the blocks (9) are used to block the communication between the first flow channel (1001) and the diverter pipe (6) and the exhaust pipe (7), and the other two blocks (9) are used to block the communication between the second flow channel (1002) and the diverter pipe (6) and the exhaust pipe (7).

3. The multi-layer air filter device for an air compressor according to claim 2, characterized in that: The stopper (9) is made of rubber.

4. The multi-layer air filter device for an air compressor according to claim 2, characterized in that: The turntable (8) is provided with a handle (8001).

5. The multi-layer air filter device for an air compressor according to claim 1, characterized in that: A wind speed sensor is provided in the air outlet pipe (3).

6. The multi-layer air filter device for an air compressor according to claim 2, characterized in that: It also includes a connecting rod (10); the filter element (4) is a multi-layer filter cartridge that is telescopically foldable in the axial direction, and its end facing the air inlet pipe (2) is fixed to the annular tube (1), and its end facing the air outlet pipe (3) can slide in the annular tube (1); a connecting rod (10) is connected between the end of each filter element (4) facing the air outlet pipe (3) and the connecting rod of the block (9).

7. The multi-layer air filter device for an air compressor according to claim 6, characterized in that: The connecting rod (10) is made of medium carbon alloy steel.

8. The multi-layer air filter device for an air compressor according to claim 2, characterized in that: It also includes an air bag (11); an air bag (11) is installed between each exhaust pipe (7) and the air inlet pipe (2); the connecting end between the air bag (11) and the exhaust pipe (7) is the air inlet end, and the other end is the air outlet end; the air bag (11) is provided with a one-way air valve at the air inlet end, and an exhaust valve at the air outlet end.

9. The multi-layer air filter device for an air compressor according to claim 8, characterized in that: The air inlet end of the air bag (11) is provided with a filter.

10. The multi-layer air filter device for an air compressor according to claim 9, characterized in that: The air bag (11) is detachably connected to the air inlet pipe (2) and the exhaust pipe (7).

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