A compressed air filter easy to maintain and maintenance method thereof

Abstract

The present invention belongs to the field of compressed air filters, specifically a compressed air filter that is easy to maintain and a maintenance method thereof, comprising an upper accommodating shell, a lower accommodating shell, a filter cartridge, a sealing mechanism and a control mechanism, the bottom surface of the upper accommodating shell is fixedly connected to the upper end surface of the lower accommodating shell, the filter cartridge is slidably inserted into the inner cavity of the lower accommodating shell, the sealing mechanism comprises a partition plate and a sealing valve plate, the partition plate is fixedly mounted on the inner wall of the upper accommodating shell, the sealing valve plate is slidably mounted in the inner cavity of the upper accommodating shell, the outer wall of the sealing valve plate has a tendency to fit with the inner wall of the partition plate in real time, the control mechanism comprises a bearing mesh plate and a top shaft, the bearing mesh plate is detachably mounted in the inner cavity of the lower accommodating shell; through the cooperation of the above-mentioned structures, the filter cartridge can be replaced and cleaned without stopping the machine, thereby ensuring the progress of production work and improving efficiency.

Description

Technical Field

[0001] The invention relates to the field of compressed air filters, in particular to a compressed air filter which is easy to maintain and a maintenance method thereof. Background Art

[0002] Compressed air filters are the first-stage filtration device that removes compressed air containing harmful substances such as dust, oil, rust and moisture. Common compressed air filters are important components of air pumps. In real-life production processes, compressed air filters are widely used.

[0003] All equipment in the production workshop that uses compressed gas needs to be connected to the air pump through a compressed air filter. The important components of the compressed air filter include the filter cartridge, which is used to filter the gas. However, as the use time increases, impurities will adhere to the inner wall of the filter cartridge. At this time, the filter cartridge needs to be removed, cleaned, or even replaced. The compressed air filter is a connecting component. When removing the filter cartridge, in order to prevent compressed gas leakage, the filter cartridge needs to be replaced in the shutdown state, which will affect the work progress of the entire production workshop.

[0004] Therefore, in view of the above problems, a compressed air filter that is easy to repair and a repair method thereof are proposed. Summary of the Invention

[0005] In order to remedy the deficiencies of the prior art and solve the above-mentioned problems, the present invention provides a compressed air filter that is easy to maintain and a maintenance method thereof.

[0006] The technical solution adopted by the present invention to solve its technical problem is: the present invention describes a compressed air filter that is easy to maintain and its maintenance method, including an upper accommodating shell, a lower accommodating shell, a filter cartridge, a sealing mechanism and a control mechanism, the bottom surface of the upper accommodating shell is fixedly connected to the upper end surface of the lower accommodating shell, and the filter cartridge is slidably inserted into the inner cavity of the lower accommodating shell.

[0007] The closing mechanism includes a partition plate and a sealing valve plate. The partition plate is fixedly mounted on the inner wall of the upper accommodating shell, and the sealing valve plate is slidingly mounted in the inner cavity of the upper accommodating shell. The outer wall of the sealing valve plate has a tendency to fit with the inner wall of the partition plate in real time.

[0008] The control mechanism includes a bearing mesh plate and a top shaft. The bearing mesh plate can be removably installed in the inner cavity of the lower accommodating shell, and the top shaft is fixedly installed on the upper end surface of the bearing mesh plate. The sealing valve plate and the partition plate are separated by controlling the top shaft. The filter cartridge can be replaced without stopping the machine to ensure production progress.

[0009] Preferably, an air inlet pipe is provided on the side wall of the upper accommodating shell, an exhaust pipe is provided on the bottom surface of the lower accommodating shell, and a one-way valve is provided at any position on the inner wall of the exhaust pipe. The one-way valve controls the gas to enter the inner cavity of the exhaust pipe only from the lower accommodating shell. The one-way valve provided in the inner cavity of the exhaust pipe can prevent the exhaust pipe at the corresponding position from leaking when the lower accommodating shell is removed.

[0010] Preferably, the outer walls of the upper accommodating shell and the lower accommodating shell are fixedly connected with flanges, the outer walls of the flanges are fixedly connected with reinforcing ribs, and the axial ends of the flanges are provided with rubber sealing rings to achieve detachable connection between the upper accommodating shell and the lower accommodating shell.

[0011] Preferably, the sealing valve plate is truncated cone-shaped, the inner wall of the partition plate is provided with a truncated cone-shaped receiving portion adapted to the sealing valve plate, and the outer wall of the sealing valve plate is slidably mounted with guide pins to provide a track for the sliding of the sealing valve plate.

[0012] A plurality of guide pins are provided, and the plurality of guide pins are evenly distributed in a ring shape along the axis of the sealing valve plate, thereby improving the sliding stability of the sealing valve plate.

[0013] Preferably, the bottom surface of the guide pin is fixedly connected to a control ring, and the outer wall of the sealing valve plate is fixedly connected to a force ring. The control ring repels the force ring through magnetic force, so that the sealing valve plate has a real-time tendency to approach the partition plate.

[0014] Preferably, the inner wall of the lower accommodating shell is fixedly connected to a supporting plate for supporting the filter cartridge, and the outer wall of the supporting plate is provided with a through hole for gas to pass through. One end of the exhaust pipe extends to the inner cavity of the lower accommodating shell and is fixedly connected to a gas collecting funnel. The gas collecting funnel is located directly below the supporting plate to facilitate filtering operations.

[0015] Preferably, the upper end surface of the filter cartridge is fixedly connected to a top block, and the end of the top block away from the filter cartridge is in contact with the bottom surface of the supporting mesh plate. The axial end of the filter cartridge is fixedly connected to an elastic ring, and the other end of the elastic ring is in contact with the bottom surface of the supporting mesh plate to ensure that gas can enter the filter cartridge.

[0016] Preferably, a pressure gauge for measuring the air pressure in the inner cavity of the upper accommodating shell is fixedly connected to the outer wall of the upper accommodating shell, so as to monitor the air pressure in the inner cavity of the upper accommodating shell in real time.

[0017] A method for repairing a compressed air filter that is easy to repair comprises the following steps:

[0018] M1. When in use, first set up two upper accommodating shells and two lower accommodating shells. After the upper and lower accommodating shells are assembled, connect the inner cavities of the two upper accommodating shells through a conduit, then connect the output end of the external air pump to the air inlet pipe, and finally connect the two exhaust pipes through a tee pipe, and connect the other end of the tee pipe to the air-consuming equipment;

[0019] M2. When the filter cartridge needs to be disassembled, first remove one of the lower filter cartridges. At this time, the inner cavity of the corresponding upper accommodating shell is closed, and the high-pressure gas is completely filtered through the filter cartridge in the inner cavity of the other lower accommodating shell, thereby ensuring the normal gas transmission. Then remove the filter cartridge and re-install a new filter cartridge in the inner cavity of the lower accommodating shell. Finally, fix the lower accommodating shell to the upper accommodating shell.

[0020] The present invention is beneficial in that:

[0021] 1. The present invention provides two upper accommodating shells and two lower accommodating shells. The inner cavity of the upper accommodating shell is provided with a partition plate and a sealing valve plate. After the lower accommodating shell is removed, the sealing valve plate slides to close the inner cavity of the upper accommodating shell. By alternately replacing the filter cartridges in the inner cavity of the lower accommodating shell, the filter cartridges can be replaced and cleaned without stopping the machine, thereby ensuring the production progress and improving efficiency.

[0022] 2. The present invention provides two upper accommodating shells and two lower accommodating shells, and both lower accommodating shells are provided with removable filter cartridges. During use, high-pressure gas can be filtered through the two filter cartridges, which can improve the service life compared to conventional compressed air filters that only use one filter cartridge for filtering. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] 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 use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 It is a structural schematic diagram of the present invention;

[0025] Figure 2 Schematic diagram of the installation of the barometer in the present invention;

[0026] Figure 3 This is a schematic diagram of the installation of the top shaft in the present invention;

[0027] Figure 4 is a cross-sectional view of the upper accommodating shell of the present invention;

[0028] Figure 5 is a cross-sectional view of the lower accommodating housing in the present invention;

[0029] Figure 6 Schematic diagram of the structure of the partition board in the present invention;

[0030] Figure 7It is a cross-sectional view of the partition board in the present invention.

[0031] In the figure: 1. Upper accommodating shell; 2. Lower accommodating shell; 3. Air pressure gauge; 4. Inlet pipe; 5. Exhaust pipe; 6. Gas collecting funnel; 7. Supporting mesh plate; 8. Top shaft; 9. Sealing valve plate; 10. Guide pin; 11. Partition plate; 12. Top block; 13. Filter cartridge; 14. Support plate; 15. Control ring; 16. Force ring. DETAILED DESCRIPTION

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Example 1

[0033] See also Figure 1-7 As shown, a compressed air filter that is easy to maintain and a maintenance method thereof include an upper accommodating shell 1, a lower accommodating shell 2, a filter cartridge 13, a sealing mechanism and a control mechanism. The bottom surface of the upper accommodating shell 1 is fixedly connected to the upper end surface of the lower accommodating shell 2. The upper accommodating shell 1 and the lower accommodating shell 2 are assembled into a complete filter shell. High-pressure gas enters from the upper accommodating shell 1 and is finally discharged from the bottom of the lower accommodating shell 2.

[0034] The filter cartridge 13 is slidably inserted into the inner cavity of the lower accommodating shell 2, wherein the outer walls of the upper accommodating shell 1 and the lower accommodating shell 2 are fixedly connected with flanges, the outer walls of the flanges are fixedly connected with reinforcing ribs, and the axial ends of the flanges are provided with rubber sealing rings. By providing the flanges and cooperating with the flanges through bolts, a detachable connection between the upper accommodating shell 1 and the lower accommodating shell 2 can be achieved. When the filter cartridge 13 needs to be replaced or cleaned, the upper accommodating shell 1 and the lower accommodating shell 2 are separated, and then the filter cartridge 13 is pulled out of the inner cavity of the lower accommodating shell 2 to achieve the removal of the filter cartridge 13, so as to facilitate the replacement and cleaning of the filter cartridge 13 and realize the maintenance of the filter.

[0035] The closing mechanism includes a partition plate 11 and a sealing valve plate 9. The partition plate 11 is fixedly installed on the inner wall of the upper accommodating shell 1. The upper accommodating shell 1 provides an installation space for the partition plate 11. After the upper accommodating shell 1 and the lower accommodating shell 2 are assembled, the inner cavities of the upper accommodating shell 1 and the lower accommodating shell 2 are divided by the partition plate 11.

[0036] The sealing valve plate 9 is slidably installed in the inner cavity of the upper accommodating shell 1, and the outer wall of the sealing valve plate 9 has a tendency to fit closely with the inner wall of the partition plate 11 in real time. After removing the lower accommodating shell 2, the sealing valve plate 9 is slid until the sealing valve plate 9 fits tightly against the outer wall of the partition plate 11 to achieve the closure of the inner cavity of the upper accommodating shell 1. At this time, the inner cavity of the upper accommodating shell 1 is filled with high-pressure gas. Through the air pressure difference, the sealing valve plate 9 can be kept in close contact with the partition plate 11 in real time.

[0037] In order to improve the sealing of the inner cavity of the upper accommodating shell 1 after the lower accommodating shell 2 is removed, the outer wall of the sealing valve plate 9 is provided with sealing rubber, which can ensure the sealing of the inner cavity of the upper accommodating shell 1 as much as possible after the lower accommodating shell 2 is removed.

[0038] The control mechanism includes a supporting mesh plate 7 and a top shaft 8. The supporting mesh plate 7 can be detachably installed in the inner cavity of the lower accommodating shell 2. The outer wall of the supporting mesh plate 7 is provided with threads. The supporting mesh plate 7 is installed in the inner cavity of the lower accommodating shell 2 by matching the internal and external threads.

[0039] The top shaft 8 is fixedly installed on the upper end surface of the supporting mesh plate 7. The sealing valve plate 9 is separated from the partition plate 11 by controlling the top shaft 8. After the upper accommodating shell 1 and the lower accommodating shell 2 are assembled, the sealing valve plate 9 is pushed to separate from the partition plate 11 by the top shaft 8, so that the high-pressure gas passes through the filter cartridge 13 and enters the inner cavity of the lower accommodating shell 2 and is finally discharged.

[0040] An air inlet pipe 4 is provided on the side wall of the upper accommodating shell 1, and the air inlet pipe 4 is connected to an external air pump to fill the inner cavity of the upper accommodating shell 1 with high-pressure gas. An exhaust pipe 5 is provided on the bottom surface of the lower accommodating shell 2, and the high-pressure gas passes through the filter cartridge 13 in the inner cavity of the lower accommodating shell 2 and is discharged from the exhaust pipe 5.

[0041] A one-way valve is provided at any position on the inner wall of the exhaust pipe 5. The one-way valve is common on the market and will not be described in detail here. The one-way valve controls the gas to enter the inner cavity of the exhaust pipe 5 only from the lower accommodating shell 2. There are two upper accommodating shells 1 and two lower accommodating shells 2. The inner cavities of the two upper accommodating shells 1 are connected by a conduit. When in use, the high-pressure gas can be filtered through the filter cartridges 13 in the inner cavities of the two lower accommodating shells 2, and the two exhaust pipes 5 can be connected by a common three-way pipe.

[0042] When the filter cartridge 13 needs to be replaced, first remove one of the lower filter cartridges 13. At this time, the inner cavity of the corresponding upper accommodating shell 1 is closed, and the high-pressure gas is completely filtered through the filter cartridge 13 in the inner cavity of the other lower accommodating shell 2, thereby ensuring the normal gas transmission. Then remove the filter cartridge 13 and re-fill the inner cavity of the lower accommodating shell 2 with a new filter cartridge 13. Finally, fix the lower accommodating shell 2 to the upper accommodating shell 1. The one-way valve arranged in the inner cavity of the exhaust pipe 5 can prevent the exhaust pipe 5 at the corresponding position from leaking when the lower accommodating shell 2 is removed. By alternately replacing the filter cartridge 13 in the inner cavity of the lower accommodating shell 2, the filter cartridge 13 can be replaced and cleaned without stopping the machine, thereby ensuring the progress of production and improving efficiency. Example 2

[0043] See also Figure 1-7 As shown, based on the first embodiment, further steps are as follows:

[0044] The sealing valve plate 9 is frustum-shaped, and the inner wall of the partition plate 11 is provided with a frustum-shaped receiving portion adapted to the sealing valve plate 9. The frustum-shaped receiving portion is used to connect the inner cavities of the upper accommodating shell 1 and the lower accommodating shell 2. When the outer wall of the sealing valve plate 9 is separated from the frustum-shaped receiving portion, the inner cavities of the upper accommodating shell 1 and the lower accommodating shell 2 are connected. When the sealing valve plate 9 is tightly fitted with the frustum-shaped receiving portion, the inner cavity of the upper accommodating shell 1 remains closed.

[0045] A guide pin 10 is slidably mounted on the outer wall of the sealing valve plate 9 . The guide pin 10 is provided to limit the sliding trajectory of the sealing valve plate 9 .

[0046] In order to improve the sliding stability of the sealing valve plate 9, a plurality of guide pins 10 are provided. The plurality of guide pins 10 are evenly distributed in a ring shape along the axis of the sealing valve plate 9, which can improve the sliding stability of the sealing valve plate 9 as much as possible.

[0047] In order to improve the sensitivity of the sealing of the inner cavity of the upper accommodating shell 1 when removing the lower accommodating shell 2, a control ring 15 is fixedly connected to the bottom surface of the guide pin 10, and a force ring 16 is fixedly connected to the outer wall of the sealing valve plate 9. The control ring 15 repels the force ring 16 through magnetic force. The control ring 15 and the force ring 16 are two mutually repelling permanent magnets. Through the mutually repelling magnetic force, the sealing valve plate 9 can have a real-time tendency to fit with the conical receiving portion.

[0048] In this embodiment, magnetic force is selected as the power of the Ruidong sealing valve plate 9, which can effectively improve the service life compared to using common elastic parts such as springs with fatigue.

[0049] A bearing plate 14 for bearing the filter cartridge 13 is fixedly connected to the inner wall of the lower accommodating shell 2 . After the filter cartridge 13 is installed, the bearing plate 14 serves as a support for the installation of the filter cartridge 13 .

[0050] The outer wall of the supporting plate 14 is provided with a through hole for gas to pass through. One end of the exhaust pipe 5 extends to the inner cavity of the lower accommodating shell 2 and is fixedly connected to a gas collecting funnel 6. The gas collecting funnel 6 is located directly below the supporting plate 14 so that the high-pressure gas can pass through the filter cartridge 13 and finally be discharged from the exhaust pipe 5.

[0051] The upper end surface of the filter cartridge 13 is fixedly connected to a top block 12, and the end of the top block 12 away from the filter cartridge 13 is in contact with the bottom surface of the supporting mesh plate 7. The setting of the top block 12 can prevent the filter cartridge 13 from shaking in the inner cavity of the lower accommodating shell 2.

[0052] When removing the filter cartridge 13 , the supporting mesh plate 7 is rotated and removed, and finally the filter cartridge 13 is pulled out from the inner cavity of the lower accommodating shell 2 .

[0053] An elastic ring is fixedly connected to the axial end of the filter cartridge 13, and the other end of the elastic ring is tightly fitted with the bottom surface of the supporting mesh plate 7. The elastic ring is a common elastic rubber ring, which ensures that the gas can completely enter the inner cavity of the filter cartridge 13 through the supporting mesh plate 7, thereby ensuring the filtering effect.

[0054] A barometer 3 for measuring the air pressure in the inner cavity of the upper accommodating shell 1 is fixedly connected to the outer wall of the upper accommodating shell 1 , so that the air pressure in the inner cavity of the upper accommodating shell 1 can be monitored in real time.

[0055] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0056] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and modifications fall within the scope of the invention as claimed.

Claims

1. A compressed air filter that is easy to maintain, characterized by: The invention comprises an upper accommodating shell (1), a lower accommodating shell (2), a filter cartridge (13), a sealing mechanism and a control mechanism, wherein the upper accommodating shell (1) and the lower accommodating shell (2) are both provided in pairs, the inner cavities of the two upper accommodating shells (1) are connected via a conduit, the bottom surface of the upper accommodating shell (1) is fixedly connected to the upper end surface of the lower accommodating shell (2), the filter cartridge (13) is slidably plugged into the inner cavity of the lower accommodating shell (2), and the side wall of the upper accommodating shell (1) is provided with an air inlet pipe (4); The sealing mechanism comprises a partition plate (11) and a sealing valve plate (9), wherein the partition plate (11) is fixedly mounted on the inner wall of the upper accommodating shell (1), and the sealing valve plate (9) is slidably mounted in the inner cavity of the upper accommodating shell (1), and the outer wall of the sealing valve plate (9) has a tendency to fit in with the inner wall of the partition plate (11) in real time; The control mechanism comprises a bearing mesh plate (7) and a top shaft (8); the bearing mesh plate (7) is detachably mounted in the inner cavity of the lower accommodating shell (2); the top shaft (8) is fixedly mounted on the upper end surface of the bearing mesh plate (7); and the sealing valve plate (9) is controlled to separate from the partition plate (11) by the top shaft (8).

2. A compressed air filter that is easy to maintain according to claim 1, characterized in that: An exhaust pipe (5) is provided on the bottom surface of the lower accommodating shell (2), and a one-way valve is provided at any position on the inner wall of the exhaust pipe (5). The one-way valve controls gas to enter the inner cavity of the exhaust pipe (5) only from the lower accommodating shell (2).

3. The compressed air filter that is easy to maintain according to claim 2, characterized in that: The outer walls of the upper accommodating shell (1) and the lower accommodating shell (2) are both fixedly connected with flanges, the outer walls of the flanges are fixedly connected with reinforcing ribs, and the axial ends of the flanges are provided with rubber sealing rings.

4. The compressed air filter that is easy to maintain according to claim 3, characterized in that: The sealing valve plate (9) is in a truncated cone shape, the inner wall of the partition plate (11) is provided with a truncated cone-shaped receiving portion adapted to the sealing valve plate (9), and the outer wall of the sealing valve plate (9) is slidably provided with a guide pin (10); A plurality of guide pins (10) are provided, and the plurality of guide pins (10) are evenly distributed in a ring shape along the axis of the sealing valve plate (9).

5. The compressed air filter that is easy to maintain according to claim 4, characterized in that: The bottom surface of the guide pin (10) is fixedly connected to a control ring (15), and the outer wall of the sealing valve plate (9) is fixedly connected to a force ring (16), and the control ring (15) repels the force ring (16) through magnetic force.

6. The compressed air filter that is easy to maintain according to claim 5, characterized in that: A supporting plate (14) for supporting the filter cartridge (13) is fixedly connected to the inner wall of the lower accommodating shell (2), and a through hole for gas to pass through is provided on the outer wall of the supporting plate (14). One end of the exhaust pipe (5) extends to the inner cavity of the lower accommodating shell (2) and is fixedly connected to a gas collecting funnel (6). The gas collecting funnel (6) is located directly below the supporting plate (14).

7. The compressed air filter that is easy to maintain according to claim 6, characterized in that: The upper end surface of the filter cartridge (13) is fixedly connected to a top block (12), and one end of the top block (12) away from the filter cartridge (13) is in contact with the bottom surface of the supporting mesh plate (7). The axial end of the filter cartridge (13) is fixedly connected to an elastic ring, and the other end of the elastic ring is in close contact with the bottom surface of the supporting mesh plate (7).

8. The compressed air filter that is easy to maintain according to claim 7, characterized in that: A barometer (3) for measuring the air pressure in the inner cavity of the upper accommodating shell (1) is fixedly connected to the outer wall of the upper accommodating shell (1).

9. A method for repairing a compressed air filter that is easy to repair, according to claim 1, characterized in that: The steps include: M1. When in use, first, two upper accommodating shells (1) and two lower accommodating shells (2) need to be set. After the upper accommodating shells (1) and the lower accommodating shells (2) are assembled, the inner cavities of the two upper accommodating shells (1) are connected through a conduit, and then the output end of the external air pump is connected to the air inlet pipe (4). Finally, the two exhaust pipes (5) are connected through a three-way pipe, and the other end of the three-way pipe is connected to the air-using equipment; M2. When the filter cartridge (13) needs to be disassembled, first remove one of the lower filter cartridges (13). At this time, the inner cavity of the corresponding upper accommodating shell (1) is closed, and the high-pressure gas is completely filtered through the filter cartridge (13) in the inner cavity of the other lower accommodating shell (2), thereby ensuring the normal gas transmission. Then, remove the filter cartridge (13) and re-install a new filter cartridge (13) in the inner cavity of the lower accommodating shell (2). Finally, fix the lower accommodating shell (2) to the upper accommodating shell (1).

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