Closed-loop filtering device

Abstract

The utility model belongs to the technical field of dust filtration, in particular relates to a closed-loop filtering device, and aims to solve the problems that a part of existing special filtering devices have strict requirements on resistance of a filter during filtration, so that a filter drum needs to be frequently replaced for multiple times, the operation is complicated and the like, and adopts the scheme that the closed-loop filtering device comprises a filtering barrel, the top of the filter barrel is detachably provided with an access cover, the access cover is used for conveniently overhauling the interior of the filter barrel, the bottom of the filter barrel is fixedly provided with an ash receiving hopper, the bottom end of the ash receiving hopper is provided with an ash cleaning port, and the ash cleaning port of the ash receiving hopper is provided with a zero-leakage valve. According to the closed-loop filtering device, through the arrangement of the plurality of filter cartridges, the filtering area and the dust capturing capacity are remarkably improved, meanwhile, a reverse blowing cleaning mode is adopted, tedious operation of frequently disassembling and replacing a filtering assembly is avoided, the maintenance cost and difficulty are reduced, and efficient filtering and convenient cleaning and maintenance of dust are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of dust filtering, in particular to a closed-loop filtering device. Background Art

[0002] In the new energy industry, a relatively ideal processing method is currently used for the production of new battery materials. This method is to use a new process to process large-particle raw materials into the particle size required by the material during the powder grinding process. During the processing, nitrogen or other inert gas protection is required. During the entire processing process, the inert protective gas acts as a power source to drive the transportation of the powder. After completing a powder processing and transportation process, the protective gas needs to be refluxed, but there is a part of dust in the gas. This dust is fatal to the compressor with secondary pressurization. Therefore, when entering the secondary pressurization, the protective gas needs to be re-filtered before entering the compressor. Among them, there are production processes with nitrogen purity requirements. When the protective gas is reused, no air can be mixed. Therefore, when designing the filter, it is necessary to make a relatively closed system, which is called a closed-loop filtration system here, and the filtration device is called a closed-loop filtration device.

[0003] At present, all compressors, internal combustion engines, etc. are sensitive to dust particles in the air. They need a special filtering device to filter out dust particles larger than 1 micron in the air, and have strict requirements on the resistance of the filter. When the filter exceeds a certain resistance during use, the filter cartridge must be replaced to ensure that the subsequent process facilities are not affected by the increased resistance of the filter cartridge. However, frequent replacement of filter cartridges is complicated and not conducive to improving work efficiency.

[0004] In view of the above problems, the utility model document proposes a closed-loop filtering device. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings of some proprietary filtering devices in the prior art, such as strict requirements on the resistance of the filter during filtering, which requires frequent replacement of the filter cartridge and is complicated to operate, and a closed-loop filtering device is proposed.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A closed-loop filtering device, comprising:

[0008] A filter barrel, the top of which is detachably provided with an inspection cover, the inspection cover is used to facilitate the inspection of the interior of the filter barrel, an ash receiving hopper is fixedly installed at the bottom of the filter barrel, an ash cleaning port is provided at the bottom of the ash receiving hopper, and a zero-leakage valve is provided on the ash cleaning port of the ash receiving hopper to prevent gas from entering the interior of the device when discharging materials;

[0009] An air inlet pipe is fixedly installed on one side of the ash receiving hopper, and the air inlet pipe is used to input the gas mixed with dust. An air outlet pipe is fixedly installed on one side of the filter barrel, and the air outlet pipe is used to discharge the cleaned gas. The air outlet pipe is located above the air inlet pipe.

[0010] It also includes a support frame, the filter barrel and the ash receiving hopper are both located in the support frame, the top of the support frame is fixedly connected to the outer wall of the filter barrel through a plurality of fixing blocks, and the support frame is used to complete the support and fixation of the filter barrel and the ash receiving hopper;

[0011] It also includes a filter assembly, which is used to filter dust in the gas in the filter barrel;

[0012] It also includes a backflush component, which is used to backflush the filter component for cleaning.

[0013] In a possible design, the filter assembly includes a fixed ring fixedly mounted on the inner wall of the filter barrel, the internal sealing rotatable disk of the fixed ring is provided, a plurality of filter cartridges are fixedly penetrated on the turntable, the plurality of filter cartridges are located between the air inlet pipe and the air outlet pipe, and the bottom ends of the plurality of filter cartridges are provided with openings for completing the entry of gas and the falling of dust.

[0014] In one possible design, the back-blowing assembly includes a back-blowing air storage cylinder fixedly mounted on one side of the filter barrel by a bracket, and air pipes are fixedly mounted on one end of the two air outlets of the back-blowing air storage cylinder, the two air pipes are connected by a connecting pipe, and multiple first air blowing pipes are fixedly mounted on the outer walls of the two air pipes, and the air outlets of the multiple first air blowing pipes are all facing downward and cooperate with multiple filter cartridges for spraying compressed gas and cleaning dust particles adsorbed on the multiple filter cartridges.

[0015] In one possible design, the air inlet end of the back-blowing air cylinder is connected to an external air supply device, which provides compressed gas of the same type as the gas to be cleaned inside the filter barrel. A pressure transmitter is provided at the air inlet end of the back-blowing air cylinder to prevent gas leakage and to sound an alarm when a problem occurs.

[0016] In one possible design, a plurality of drive plates are fixedly installed on the top of the turntable, and the plurality of drive plates are arranged in a ring shape along the edge of the turntable. The two air supply pipes are fixedly connected to two second air blowing pipes through connecting pipes, and the air outlet ends of the two second air blowing pipes face oppositely. The air outlet ends of the two second air blowing pipes cooperate with the plurality of drive plates to drive the turntable to rotate, thereby further cleaning the dust particles attached to the plurality of filter cartridges.

[0017] In a possible design, a rotating bracket is provided on one side of the filter barrel through a bracket, a screw rod is passed through the top thread of the rotating bracket, and the bottom end of the screw rod is fixedly passed through the inspection cover, and the screw rod is used to complete the lifting of the inspection cover. The inspection cover can be removed in conjunction with the rotating bracket, which can reduce the obstruction caused by the inspection cover to maintenance.

[0018] In the present application, when in use, the user can transport the gas to be cleaned into the filter barrel through the air inlet pipe. The gas to be cleaned will enter the filter cartridge through the bottom openings of multiple filter cartridges, pass through the turntable, and finally be discharged from the air outlet pipe; when the gas passes through the filter cartridge, the dust particles mixed in the gas will be filtered by the filter cartridge, and the filtered dust particles will fall into the ash hopper through the bottom opening of the filter cartridge. After that, the user can open the zero-leakage valve to discharge the dust in the ash hopper. The zero-leakage valve can prevent gas from entering the filter device during discharge, thereby fully ensuring the safety and efficiency of the filtration system; when filtering and cleaning the gas, dust will inevitably be adsorbed on the inner wall of the filter cartridge, which will affect the efficiency of the filter cartridge in filtering the gas. At this time, the user can start the backflush component and use the external air supply device Compressed gas is input into the back-blowing air storage cylinder. The compressed gas and the gas to be cleaned are the same process gas. The compressed gas will enter the filter barrel through the air supply pipe and be discharged through multiple first air blowing pipes, which can clean the filter cartridge and blow off the dust adsorbed on the inner wall of the filter cartridge and make it fall into the ash receiving hopper. At the same time, when the air supply pipe is supplying air, the gas can also be blown out through two second air blowing pipes, and the rotation of the turntable can be completed by blowing the driving plate, so as to change the position of multiple filter cartridges, which is beneficial to further improve the cleaning effect of the filter cartridge; when the user is performing maintenance, the fixation of the maintenance cover can be released first, and then the screw can be turned to complete the rise of the maintenance cover, and then the rotating bracket can be turned to remove the maintenance cover, which can facilitate the maintenance and also facilitate the subsequent re-installation of the maintenance cover, which is more labor-saving.

[0019] Beneficial effects:

[0020] In the utility model, the closed-loop filtering device increases the filtering area and improves the dust capture capability by setting a plurality of filter cartridges. At the same time, the bottom opening design of the filter cartridge allows the gas to enter smoothly and complete the dust falling, further improving the filtering effect;

[0021] In the utility model, the closed-loop filtering device uses a back-blowing component to clean the dust particles adsorbed on the filter cartridge by spraying compressed gas, without the need to frequently disassemble and replace the filter component, thereby reducing maintenance costs and operating difficulties. At the same time, the coordinated design of the turntable and the drive plate can achieve all-round cleaning of the filter cartridge, thereby improving the cleaning effect;

[0022] In the utility model, a closed-loop filtering device is provided with a zero-leakage valve on the ash cleaning port of the ash hopper, which effectively prevents gas from entering the interior of the device during discharge and ensures the safety of operation; in addition, a pressure transmitter is provided at the air inlet end of the back-blowing air storage cylinder, which can monitor the gas pressure in real time and prevent gas leakage, thereby improving the overall reliability of the device.

[0023] In the utility model, the closed-loop filtration device achieves efficient filtration of dust and convenient cleaning and maintenance through the unique design of the filter assembly and back-blowing assembly, which has significant beneficial effects. Specifically, the device significantly improves the filtration area and dust capture capacity through the setting of multiple filter cartridges. At the same time, the back-blowing cleaning method is adopted to avoid the tedious operation of frequent disassembly and replacement of the filter assembly, reducing the maintenance cost and difficulty. In addition, the device is also safe and reliable. Through the setting of zero-leakage valves and pressure transmitters, gas leakage and safety problems are effectively prevented, which is convenient for layout and use at industrial production sites. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A three-dimensional structural schematic diagram of a closed-loop filtering device proposed by the utility model;

[0025] Figure 2 This is a schematic cross-sectional view of a closed-loop filtering device proposed by the utility model;

[0026] Figure 3 This is a schematic diagram of the structure of a backflush component of a closed-loop filtration device proposed by the utility model;

[0027] Figure 4 This is a schematic diagram of the disassembled structure of a filter component of a closed-loop filter device proposed by the utility model.

[0028] In the figure: 1. filter barrel; 2. ash hopper; 3. support frame; 4. zero leakage valve; 5. inspection cover; 6. rotating bracket; 7. screw; 8. air inlet pipe; 9. air outlet pipe; 10. back-blowing air storage cylinder; 11. pressure transmitter; 12. fixing ring; 13. turntable; 14. filter cartridge; 15. air supply pipe; 16. first air blowing pipe; 17. second air blowing pipe; 18. drive plate. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0030] Example 1

[0031] Reference Figure 1-4, a closed-loop filtering device, which is used in the field of dust filtering technology, comprises: a filter barrel 1, an ash receiving hopper 2, a support frame 3, a filter assembly and a backflush assembly;

[0032] The filter barrel 1 is the main body of the device, and a detachable inspection cover 5 is provided on the top to facilitate inspection and maintenance of the interior of the filter barrel 1.

[0033] The bottom of the filter barrel 1 is fixedly installed with an ash hopper 2 for collecting the filtered dust. The bottom of the ash hopper 2 is provided with an ash cleaning port, and a zero-leakage valve 4 is installed on the ash cleaning port to prevent gas from entering the device during the discharge process.

[0034] An air inlet pipe 8 is fixedly installed on one side of the ash hopper 2 for inputting dust-containing gas into the filter barrel 1. An air outlet pipe 9 is fixedly installed on the other side of the filter barrel 1 for discharging the filtered clean gas. The air outlet pipe 9 is located above the air inlet pipe 8 to ensure smooth gas flow.

[0035] The filter barrel 1 and the ash receiving hopper 2 are both located in the support frame 3, and the top of the support frame 3 is fixedly connected to the outer wall of the filter barrel 1 through a plurality of fixing blocks to ensure the stability of the entire device.

[0036] The filter assembly is mainly composed of a fixed ring 12, a rotating disk 13 and a filter cartridge 14. The fixed ring 12 is sealed and installed on the inner wall of the filter barrel 1, and the rotating disk 13 is sealed and rotatably arranged inside the fixed ring 12. A plurality of filter cartridges 14 are fixed and penetrated on the rotating disk 13 and are all located between the air inlet pipe 8 and the air outlet pipe 9. The bottom of the filter cartridge 14 is provided with an opening to allow gas to enter and facilitate dust to fall off.

[0037] The back-blowing assembly is mainly composed of a back-blowing air storage cylinder 10, an air delivery pipe 15, a first air blowing pipe 16 and a second air blowing pipe 17. The back-blowing air storage cylinder 10 is fixed to one side of the filter barrel 1 through a bracket, and its two air outlets are respectively connected to two air delivery pipes 15. The two air delivery pipes 15 are connected through a connecting pipe, and a plurality of first air blowing pipes 16 are fixedly installed on their outer walls. The air outlet of the first air blowing pipe 16 faces downward and corresponds to the filter cartridge 14, and is used to spray compressed gas to clean the dust particles on the filter cartridge 14.

[0038] Example 2

[0039] Reference Figure 1 , 3 4. Improvements based on Example 1:

[0040] In this embodiment, the air inlet end of the back-blowing air storage cylinder 10 is connected to an external air supply device to provide the same type of compressed gas as the gas to be cleaned inside the filter barrel 1. At the same time, a pressure transmitter 11 is also provided at the air inlet end to monitor the gas pressure and prevent gas leakage, and to promptly alarm in case of a problem.

[0041] In this embodiment, a plurality of drive plates 18 are fixedly mounted on the top of the rotating disk 13, and the drive plates 18 are arranged in a ring shape along the edge of the rotating disk 13. Two second air blowing pipes 17 are fixedly connected to the connecting pipes of the two air delivery pipes 15, and the air outlet ends of the second air blowing pipes 17 face oppositely and correspond to the drive plates 18. When the second air blowing pipes 17 spray gas, the rotating disk 13 can be driven to rotate, so as to further clean the dust particles on the filter cartridge 14.

[0042] In this embodiment, the inspection cover 5 is opened and closed by rotating the bracket 6 and the screw 7. The rotating bracket 6 is rotatably installed on one side of the filter barrel 1. The screw 7 threadedly penetrates the rotating bracket 6 and is fixedly connected to the top of the inspection cover 5. By rotating the screw 7, the inspection cover 5 can be easily raised or closed.

[0043] However, as is well known to those skilled in the art, the working principle and wiring method of the pressure transmitter 11 are commonplace, and are conventional means or common knowledge, and are not described in detail here. Those skilled in the art may make any selections according to their needs or convenience.

[0044] The working principle and use process of the present technical scheme are as follows: when in use, the user can convey the gas to be cleaned into the filter barrel 1 through the air inlet pipe 8, and the gas to be cleaned will enter the filter cartridge 14 through the bottom openings of multiple filter cartridges 14, pass through the turntable 13, and finally be discharged from the air outlet pipe 9; when the gas passes through the filter cartridge 14, the dust particles mixed in the gas will be filtered by the filter cartridge 14, and the filtered dust particles will fall into the ash hopper 2 through the bottom opening of the filter cartridge 14, and then the user can open the zero-leakage valve 4 to discharge the dust in the ash hopper 2. The zero-leakage valve 4 can prevent gas from entering the filter device during discharge, thereby fully ensuring the safety and efficiency of the filtration system; when filtering and cleaning the gas, it is inevitable that dust will be adsorbed on the inner wall of the filter cartridge 14, which will affect the efficiency of the filter cartridge 14 in filtering the gas. At this time, the user can start the backflush component and use the external supply The gas equipment inputs compressed gas into the back-blowing gas storage cylinder 10. The compressed gas and the gas to be cleaned are the same process gas. The compressed gas will enter the filter barrel 1 through the gas supply pipe 15 and be discharged through multiple first blowing pipes 16, which can clean the filter cartridge 14 and blow off the dust adsorbed on the inner wall of the filter cartridge 14 and make it fall into the ash receiving hopper 2. At the same time, when the gas supply pipe 15 is supplying gas, the gas can also be blown out through the two second blowing pipes 17, and the rotation of the turntable 13 can be completed by blowing the driving plate 18, so that the positions of multiple filter cartridges 14 can be changed, which is beneficial to further improve the cleaning effect of the filter cartridge 14; when the user is performing maintenance, the maintenance cover 5 can be released first, and then the screw 7 can be rotated to complete the rise of the maintenance cover 5, and then the rotating bracket 6 can be rotated to remove the maintenance cover 5, which can facilitate the maintenance and also facilitate the subsequent re-installation of the maintenance cover 5, which is more labor-saving.

[0045] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A closed-loop filtration device, characterized in that: include: A filter barrel (1), wherein a top of the filter barrel (1) is detachably provided with an inspection cover (5), wherein the inspection cover (5) is used to facilitate inspection of the interior of the filter barrel (1), and an ash receiving hopper (2) is fixedly installed at the bottom of the filter barrel (1), wherein an ash cleaning port is provided at the bottom end of the ash receiving hopper (2), and a zero-leakage valve (4) is provided on the ash cleaning port of the ash receiving hopper (2) to prevent gas from entering the interior of the device when discharging materials; An air inlet pipe (8) is fixedly mounted on one side of the ash receiving hopper (2), and the air inlet pipe (8) is used to input gas mixed with dust. An air outlet pipe (9) is fixedly mounted on one side of the filter barrel (1), and the air outlet pipe (9) is used to discharge cleaned gas. The air outlet pipe (9) is located above the air inlet pipe (8). It also comprises a support frame (3), the filter barrel (1) and the ash receiving hopper (2) are both located inside the support frame (3), the top end of the support frame (3) is fixedly connected to the outer wall of the filter barrel (1) via a plurality of fixing blocks, and the support frame (3) is used to complete the support and fixing of the filter barrel (1) and the ash receiving hopper (2); It also includes a filter assembly, which is used to filter dust in the gas in the filter barrel (1); It also includes a backflush component, which is used to backflush the filter component for cleaning.

2. A closed-loop filtration device according to claim 1, characterized in that: The filter assembly comprises a fixing ring (12) fixedly mounted on the inner wall of the filter barrel (1); a rotating disk (13) is provided inside the fixing ring (12) for sealing and rotation; a plurality of filter cartridges (14) are fixedly passed through the rotating disk (13); the plurality of filter cartridges (14) are all located between the air inlet pipe (8) and the air outlet pipe (9); and the bottom ends of the plurality of filter cartridges (14) are all provided with openings for achieving the entry of gas and the falling of dust.

3. A closed-loop filtering device according to claim 2, characterized in that: The back-blowing assembly comprises a back-blowing air storage cylinder (10) fixedly mounted on one side of the filter barrel (1) via a bracket, an air supply pipe (15) being fixedly mounted at one end of two air outlets of the back-blowing air storage cylinder (10), the two air supply pipes (15) being connected via a connecting pipe and a plurality of first air blowing pipes (16) being fixedly mounted on the outer walls of the two air supply pipes (15), the air outlets of the plurality of first air blowing pipes (16) all facing downward and cooperating with the plurality of filter cartridges (14) for spraying compressed gas and cleaning dust particles adsorbed on the plurality of filter cartridges (14).

4. A closed-loop filtration device according to claim 3, characterized in that: The air inlet end of the back-blowing air storage cylinder (10) is connected to an external air supply device, which provides compressed gas of the same type as the gas to be cleaned inside the filter barrel (1). The air inlet end of the back-blowing air storage cylinder (10) is provided with a pressure transmitter (11) for preventing gas leakage and providing an alarm when a problem occurs.

5. A closed-loop filtering device according to claim 3, characterized in that: A plurality of drive plates (18) are fixedly mounted on the top of the turntable (13), and the plurality of drive plates (18) are arranged in a ring shape along the edge of the turntable (13). The two air delivery pipes (15) are fixedly connected to two second air blowing pipes (17) via connecting pipes, and the air outlet ends of the two second air blowing pipes (17) face opposite directions. The air outlet ends of the two second air blowing pipes (17) cooperate with the plurality of drive plates (18) to drive the turntable (13) to rotate, thereby further cleaning the dust particles attached to the plurality of filter cartridges (14).

6. A closed-loop filtration device according to claim 1, characterized in that: A rotating bracket (6) is provided on one side of the filter barrel (1) through a bracket for rotation, a screw rod (7) is passed through the top thread of the rotating bracket (6), and the bottom end of the screw rod (7) is fixedly passed through the inspection cover (5), and the screw rod (7) is used to complete the lifting of the inspection cover (5). The inspection cover (5) can be removed in cooperation with the rotating bracket (6), thereby reducing the obstruction caused by the inspection cover (5) to the inspection.

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