Multi-channel air inlet filtering device for air extraction and separation

Abstract

The utility model relates to a multi-channel air inlet filter device for air extraction and separation, which comprises a frame and a controller, a plurality of air inlet pipes I and exhaust pipes oppositely penetrate through the bottom and the top of the frame respectively, the opposite ends of the air inlet pipes I and the exhaust pipes are provided with external threads, the air inlet pipes I are jointly connected with a communicating pipe I, and the communicating pipe I is communicated with the controller. The exhaust pipes are jointly connected with a second communicating pipe, the first exhaust pipe is provided with a flow meter and a second electromagnetic valve, the exhaust pipes are provided with indicator lamps, the upper end of the first air inlet pipe is sleeved with a filter shell in a threaded mode, a filter element is arranged in the filter shell, the filter shell is movably sleeved with a filter cover, and a sealing ring is arranged between the filter cover and the filter shell. The top of the filter cover sleeves the lower end of the exhaust pipe in a threaded mode, and the controller is electrically connected to the first electromagnetic valve, the second electromagnetic valve, the flow meter and the indicator lamp. The multiple filter elements are used for filtering in turn, when one filter element is saturated, the next filter element can be automatically switched for filtering, the filter elements are replaced without stopping production, and the replacement operation of the filter elements is convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of air intake filtering, and particularly relates to a multi-channel air intake filtering device for air extraction and separation. Background Art

[0002] Gas production companies often extract air from nature for separation, compression, cooling, freezing and distillation to obtain useful gases such as oxygen, nitrogen, helium, etc. for industrial, medical and other fields. In order to improve the quality of gas production. When collecting air, it is necessary to use a front-end filter device to filter the air to remove dust in the air. This process is also called front-end filtration in the gas production process. In the prior art, when filtering the air at the front end, a filter element is used for filtration. The filter element is arranged in the filter housing, and an air inlet and an exhaust port are provided at both ends of the filter housing, so that when the air flows from the air inlet to the exhaust port, the dust in the air will be blocked by the filter element to achieve the filtering effect.

[0003] However, the prior art uses a single-channel air intake filtration method, that is, a single filter element and filter housing are used for filtration. The problem caused by this is that when the filtering capacity of the filter element reaches saturation and needs to be replaced, production needs to be stopped and the filter element needs to be replaced, which greatly affects the gas production efficiency. Utility Model Content

[0004] The utility model provides a multi-channel air intake filter device for air extraction and separation, which adopts multiple filter elements for filtering in turn. When one filter element is saturated, it can automatically switch to the next filter element for filtering. The filter element can be replaced without stopping production, and the filter element replacement operation is convenient.

[0005] The technical solution adopted by this utility model:

[0006] A multi-channel air intake filter device for air extraction and separation comprises a frame and a controller, wherein a plurality of intake pipes 1 and exhaust pipes are respectively penetrated through the bottom and top of the frame, the intake pipe 1 and the exhaust pipe are provided with external threads on the opposite ends, the plurality of intake pipes 1 are commonly connected with a connecting pipe 1, the intake pipe 1 is provided with an electromagnetic valve 1, the plurality of exhaust pipes are commonly connected with a connecting pipe 2, the exhaust pipe 1 is provided with a flow meter and an electromagnetic valve 2, the exhaust pipe is provided with a warning light, the upper end of the intake pipe 1 is threadedly sleeved with a filter housing, a filter element is provided in the filter housing, a filter cover is movably sleeved on the filter housing, a sealing ring is provided between the filter cover and the filter housing, the top of the filter cover is threadedly sleeved on the lower end of the exhaust pipe, the filter housing and the filter cover are both located in the frame, and the controller is electrically connected to the electromagnetic valve 1, the electromagnetic valve 2, the flow meter and the warning light.

[0007] Preferably, an internal threaded joint 1 is provided at the bottom of the filter housing, and the internal threaded joint 1 is threadedly sleeved on the upper end of the air inlet pipe. An internal threaded joint 2 is provided at the top of the filter cover, and the internal threaded joint 2 is threadedly sleeved on the lower end of the exhaust pipe.

[0008] Preferably, a slip ring is provided at the bottom of the inner wall of the filter cover, the sealing ring is embedded on the inner wall of the slip ring, the slip ring is movably sleeved on the outer wall of the filter housing, and a limiting ring is provided on the top of the outer wall of the filter housing.

[0009] Preferably, the connecting pipe 1 is connected to the air inlet pipe 2, the air inlet pipe 2 is connected to the centrifugal cylinder, the air inlet pipe 2 is connected to the top of the centrifugal cylinder, the bottom of the centrifugal cylinder is detachably provided with a dust collecting cover, and the upper part of the side wall of the centrifugal cylinder is provided with a plurality of tangential air inlets at intervals.

[0010] Preferably, the two lower ends of the air inlet pipe are connected with a conical cover, there is a gap between the conical cover and the bottom of the dust collecting cover, the bottom of the dust collecting cover is provided with a conical protrusion, the upper part of the conical protrusion extends into the inner side of the conical cover, and a plurality of annular plates are provided on the outer wall of the conical protrusion.

[0011] Preferably, the centrifugal cylinder is threadedly connected to the dust collecting cover.

[0012] Preferably, the controller is arranged on the frame.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. Since the upper end of the intake pipe is threadedly connected to the bottom of the filter housing, the lower end of the exhaust pipe is threadedly connected to the top of the filter cover, and the filter housing and the filter cover are movably connected, the filter housing and the filter cover can be easily removed from the intake pipe and the exhaust pipe by rotating them.

[0015] 2. When the flow meter detects that the air flow in the relative exhaust pipe is lower than the preset value, it means that the filter element corresponding to the exhaust pipe has reached filtration saturation. The controller controls the corresponding solenoid valve 1 and solenoid valve 2 on the intake pipe 1 and the exhaust pipe to close, and controls the warning light on the exhaust pipe to turn on to prompt the replacement of the filter element. The controller also controls the next corresponding solenoid valve 1 and solenoid valve 2 on the intake pipe 1 and the exhaust pipe to open. Since multiple filter elements are used for filtering in turn, when one filter element is saturated, it automatically switches to the next filter element for filtering, so that the filter element can be replaced without stopping production. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 for Figure 1 A in the enlarged view;

[0018] Figure 3It is a cross-sectional view at BB in the present invention;

[0019] In the figure: 1. dust collecting cover; 2. centrifugal cylinder; 3. tangential air inlet; 4. connecting pipe 1; 5. air inlet pipe 1; 6. solenoid valve 1; 7. internal thread joint 1; 8. filter housing; 9. filter element; 10. filter cover; 11. internal thread joint 2; 12. frame; 13. solenoid valve 2; 14. flow meter; 15. warning light; 16. connecting pipe 2; 17. air inlet pipe 2; 18. conical cover; 19. exhaust pipe; 20. conical protrusion; 21. annular plate; 22. controller; 23. sealing ring; 25. slip ring; 25. limit ring. DETAILED DESCRIPTION

[0020] In order to better understand the technical content of the present invention, specific embodiments are provided below, and the present invention is further described in conjunction with the accompanying drawings.

[0021] See also Figures 1 to 3 The utility model provides a multi-channel air intake filter device for air extraction and separation, including a frame 12 and a controller 22. Three air intake pipes 15 and exhaust pipes 19 are fixedly penetrated on the bottom and top of the frame 12, respectively. External threads are arranged on the opposite ends of the air intake pipes 15 and the exhaust pipes 19. Multiple air intake pipes 15 are commonly connected with a connecting pipe 4. The air intake pipes 15 are provided with a solenoid valve 6. Multiple exhaust pipes 19 are commonly connected with a connecting pipe 2 16. The exhaust pipes 19 are provided with a flow meter 14 and Solenoid valve 13, exhaust pipe 19 is provided with a warning light 15, the upper end of intake pipe 15 is threadedly sleeved with filter housing 8, filter element 9 is arranged in filter housing 8, filter cover 10 is movably sleeved on filter housing 8, a sealing ring 23 is arranged between filter cover 10 and filter housing 8, the top of filter cover 10 is threadedly sleeved on the lower end of exhaust pipe 19, filter housing 8 and filter cover 10 are both located in frame 12, controller 22 is electrically connected to solenoid valve 16, solenoid valve 2 13, flow meter 14 and warning light 15, and the pipe fittings in this embodiment are all hard pipes;

[0022] When the air intake filtration starts, the controller 22 is used to open the solenoid valve 16 and the solenoid valve 2 13 on the exhaust pipe 19 of the first group on the left side that is vertically aligned with the intake pipe 15, so that the external air flows into the connecting pipe 2 16 through the connecting pipe 14, the first solenoid valve 15 on the left side, the intake pipe 15, the filter housing 8, the filter element 9, the filter cover 10, the exhaust pipe 19, the first solenoid valve 2 13 on the left side and the flow meter 14 in sequence. In this process, the air is filtered by the first filter element 9 on the left side; in this process, the controller 22 controls the solenoid valve 16 and the solenoid valve 2 13 of the second group and the third group on the left side to be in the closed state, and the first filter element 9 on the left side is completely used for filtering. When the first flow meter 14 on the left side detects that the air flow in the first exhaust pipe 19 of the left side is lower than the preset value, it means that the first filter element 9 on the left side has reached the filtering saturation, and the controller 22 controls the solenoid valves on the intake pipe 5 and the exhaust pipe 19 of the first group on the left side. Valve 16 and solenoid valve 2 13 are closed, and the warning light 15 on the first exhaust pipe 19 on the left is controlled to light up, so as to remind the daily inspection staff to replace the filter element 9. The controller 22 simultaneously controls the solenoid valve 16 and solenoid valve 2 13 on the second group of the left side corresponding to the intake pipe 15 and the exhaust pipe 19 to open. When the filter element 9 of the second group on the left side reaches saturation, the controller 22 controls the warning light 15 of the second group on the left side to light up, and the controller 22 controls the solenoid valve 16 and solenoid valve 2 13 of the second group on the left side to close. The controller 22 simultaneously controls the solenoid valve 16 and solenoid valve 2 13 on the third group on the left side corresponding to the intake pipe 15 and the exhaust pipe 19 to open. When the filter element 9 of the third group on the left side reaches saturation, the first group on the left side is controlled to filter. This cycle is repeated. When the previous group of filter elements 9 reaches saturation, it switches to the next group for filtering. Using multiple filter elements 9 for filtering in turn can achieve the replacement of filter elements 9 without stopping production.

[0023] When the filter element 9 needs to be replaced, since the upper end of the intake pipe 5 is threadedly connected to the bottom of the filter housing 8, the lower end of the exhaust pipe 19 is threadedly connected to the top of the filter cover 10, and the filter housing 8 and the filter cover 10 are movably connected, the filter cover 10 can rotate and slide up and down on the filter housing 8. Therefore, by rotating the filter housing 8 and the filter cover 10 respectively, it is convenient to remove them from the intake pipe 5 and the exhaust pipe 19 respectively. The general operation is to rotate and remove the filter housing 8 first and then remove the filter housing 8. When installing, the filter housing 8 is installed first and then the filter cover 10.

[0024] Preferably, an internal threaded joint 7 is fixedly provided at the bottom of the filter housing 8, and the internal threaded joint 7 is threadedly sleeved on the upper end of the air inlet pipe. An internal threaded joint 11 is provided at the top of the filter cover 10, and the internal threaded joint 11 is threadedly sleeved on the lower end of the exhaust pipe 19. The filter housing 8 and the filter cover 10 can respectively drive the internal threaded joint 7 and the internal threaded joint 11 to rotate, so as to realize the disassembly and assembly between the air inlet pipe 5 and the exhaust pipe 19.

[0025] Preferably, a slip ring 25 is fixedly provided at the bottom of the inner wall of the filter cover 10, and a sealing ring 23 is embedded in the inner wall of the slip ring 25. The inner ring of the sealing ring 23 slides and fits with the outer wall of the filter housing 8, which is beneficial to improving the sealing between the filter housing 8 and the filter cover 10. The slip ring 25 is movably sleeved on the outer wall of the filter housing 8, and a limiting ring 25 is provided on the top of the outer wall of the filter housing 8. The filter housing 8 can drive the slip ring 25 to slide and rotate on the outer wall of the filter housing 8. The limiting ring 25 can prevent the slip ring 25 from sliding upward out of the top of the filter housing 8, and can prevent the filter housing 8 from being detached from the filter cover 10 during disassembly and assembly, which is convenient for disassembly and assembly.

[0026] Preferably, the connecting pipe 1 4 is fixedly connected to the air inlet pipe 2 17, the air inlet pipe 17 is connected to the centrifugal barrel 2, the air inlet pipe 17 is connected to the middle of the top of the centrifugal barrel 2, the bottom of the centrifugal barrel 2 is detachably provided with a dust collecting cover 1, and the upper part of the side wall of the centrifugal barrel 2 is provided with a plurality of tangential air inlets 3 at intervals. External air flows into the centrifugal barrel 2 in a tangential direction through the tangential air inlets 3, so that the air entering the centrifugal barrel 2 is centrifugally processed, which is beneficial to throwing particulate matter in the air into the dust collecting cover 1. After removing the dust collecting cover 1, it is convenient to clean the particulate matter in the centrifugal barrel 2.

[0027] Preferably, the lower end of the air inlet pipe 17 is connected to a conical cover 18, and there is a gap between the conical cover 18 and the bottom of the dust collecting cover 1. A conical protrusion 20 is fixedly provided in the middle of the bottom of the dust collecting cover 1, and the upper part of the conical protrusion 20 extends into the inner side of the conical cover 18. A plurality of annular plates 21 are provided on the outer wall of the conical protrusion 20. Under the action of the conical cover 18, the air entering the centrifugal cylinder 2 moves downward in a spiral, which is beneficial to further throw the particles in the air into the dust collecting cover 1, and the air at the bottom of the centrifugal cylinder 2 will flow into the air inlet pipe 17 along the gap between the conical protrusion 20 and the conical cover 18. The annular plate 21 can prevent a large amount of particles from following the airflow to the filter element 9, which is beneficial to extend the filtering time of the filter element 9.

[0028] Preferably, the centrifugal cylinder 2 and the dust collecting cover 1 are threadedly connected to facilitate disassembly and assembly.

[0029] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A multi-channel air intake filter device for air extraction and separation, characterized in that: The invention comprises a frame and a controller, wherein a plurality of intake pipes 1 and exhaust pipes are respectively penetrated through the bottom and the top of the frame, the opposite ends of the intake pipe 1 and the exhaust pipe are provided with external threads, the plurality of intake pipes 1 are commonly connected with a connecting pipe 1, the intake pipe 1 is provided with a solenoid valve 1, the plurality of exhaust pipes are commonly connected with a connecting pipe 2, the exhaust pipe 1 is provided with a flow meter and a solenoid valve 2, the exhaust pipe is provided with a warning light, the upper end of the intake pipe 1 is threadedly sleeved with a filter housing, a filter element is provided in the filter housing, a filter cover is movably sleeved on the filter housing, a sealing ring is provided between the filter cover and the filter housing, the top of the filter cover is threadedly sleeved on the lower end of the exhaust pipe, the filter housing and the filter cover are both located in the frame, and the controller is electrically connected to the solenoid valve 1, the solenoid valve 2, the flow meter and the warning light.

2. The multi-channel air intake filter device for air extraction and separation according to claim 1, characterized in that: The bottom of the filter housing is provided with an internal threaded joint 1, which is threadedly sleeved on the upper end of the air inlet pipe. The top of the filter cover is provided with an internal threaded joint 2, which is threadedly sleeved on the lower end of the exhaust pipe.

3. A multi-channel air intake filter device for air extraction and separation according to claim 1 or 2, characterized in that: A slip ring is arranged at the bottom of the inner wall of the filter cover, the sealing ring is embedded on the inner wall of the slip ring, the slip ring is movably sleeved on the outer wall of the filter housing, and a limiting ring is arranged on the top of the outer wall of the filter housing.

4. The multi-channel air intake filter device for air extraction and separation according to claim 1, characterized in that: The connecting pipe 1 is connected to the air inlet pipe 2, the air inlet pipe 2 is connected to the centrifugal cylinder, the air inlet pipe 2 is connected to the top of the centrifugal cylinder, the bottom of the centrifugal cylinder is detachably provided with a dust collecting cover, and the upper part of the side wall of the centrifugal cylinder is provided with a plurality of tangential air inlets at intervals.

5. The multi-channel air intake filter device for air extraction and separation according to claim 4, characterized in that: The two lower ends of the air inlet pipe are connected with a conical cover, and there is a gap between the conical cover and the bottom of the dust collecting cover. The bottom of the dust collecting cover is provided with a conical protrusion, the upper part of the conical protrusion extends into the inner side of the conical cover, and a plurality of annular plates are provided on the outer wall of the conical protrusion.

6. A multi-channel air intake filter device for air extraction and separation according to claim 4 or 5, characterized in that: The centrifugal cylinder is threadedly connected with the dust collecting cover.

7. The multi-channel air intake filter device for air extraction and separation according to claim 1, characterized in that: The controller is arranged on the frame.

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