Pump front filter with nitrogen back flushing function

Abstract

The utility model relates to the technical field of industrial gas filtration, in particular to a pre-pump filter with a nitrogen back flushing function, which comprises a pre-pump filter cavity, an exhaust port is arranged at the bottom of the pre-pump filter cavity in a penetrating manner, and a dust cleaning port is communicated with the bottom of the left side of the pre-pump filter cavity. A nitrogen inlet is formed in the rear side of the before-pump filter cavity in a penetrating mode, the bottom of the right side of the before-pump filter cavity communicates with a gas inlet, and a sealing assembly is arranged at the top of the before-pump filter cavity. The gas inlet is communicated with vacuum dust collection equipment, gas is injected into the filter cavity in front of the pump through the gas inlet, the gas is filtered through the filter element, impurities in the gas can be attached to the surface of the filter element, and when too many impurities are accumulated on the surface of the filter element, nitrogen is injected into the back flushing pipe through the nitrogen inlet, so that the back flushing effect is improved. And reverse blowing is carried out through nitrogen to blow off impurities accumulated on the surface of the filter element.

Description

Technical Field

[0001] The utility model relates to the technical field of industrial gas filtering, in particular to a pre-pump filter with a nitrogen back-flushing function. Background Art

[0002] When processing process gases, they usually need to be filtered to remove impurities in the gas. When removing impurities, filters are usually required.

[0003] After searching, the announcement number is CN213253729U, and the name is an industrial gas filter, including a main body. Through research and analysis, it is found that although it has the advantage of good gas filtration effect, it still has the following disadvantages to a certain extent.

[0004] For example, when the device is in use, the filtered debris will adhere to the back of the filter element. When too much debris accumulates, the staff will need to disassemble the device for cleaning, which increases the workload of the staff and seriously affects the work efficiency. In order to solve the above technical problems, we have designed a pre-pump filter with nitrogen backflush function. Utility Model Content

[0005] The utility model aims to provide a pre-pump filter with a nitrogen backflush function, which has the advantage of being convenient for cleaning debris and solves the problem that during the use of the device, the filtered debris will adhere to the back of the filter element. After too much debris accumulates, the staff needs to disassemble the device for cleaning, which increases the workload of the staff and seriously affects the work efficiency.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a pre-pump filter with a nitrogen backflush function, comprising a pre-pump filter cavity, an exhaust port is penetrated at the bottom of the pre-pump filter cavity, a ash cleaning port is connected to the bottom of the left side of the pre-pump filter cavity, a nitrogen inlet is penetrated at the rear side of the pre-pump filter cavity, an air inlet is connected to the bottom of the right side of the pre-pump filter cavity, a closing component is arranged at the top of the pre-pump filter cavity, a filter element is sleeved on the surface of the exhaust port, a closing cover is clamped on the top of the filter element, a backflush pipe is penetrated on the top of the closing cover, the bottom of the backflush pipe is connected to the nitrogen inlet, and a fixing nut is threadedly sleeved on the surface of the backflush pipe.

[0007] Preferably, a sealing ring is clamped on the right side of the air inlet, and a closing ring is welded on the bottom of the air outlet.

[0008] Preferably, lifting frames are welded to the front and rear sides of the pre-pump filter cavity, and the bottom of the fixing nut is in contact with the closing cover.

[0009] Preferably, the closure assembly includes a mounting frame, the surface of the pre-pump filter cavity is welded to the mounting frame, the top cover of the pre-pump filter cavity is provided with a filter top cover, the inner cavity of the mounting frame is rotatably connected to a rotating screw, and the top threaded sleeve of the rotating screw is provided with a top cover locking nut.

[0010] Preferably, a handle is welded on the top of the filter upper cover, a groove is provided on the surface of the filter upper cover, and the rotating screw rod is used in conjunction with the groove.

[0011] Preferably, an ash guide plate is welded to the inner wall of the pre-pump filter cavity, and the surface of the exhaust port is welded to the ash guide plate.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] 1. The utility model connects the air inlet with the vacuum cleaner, injects the gas into the pre-pump filter cavity through the air inlet, filters the gas through the filter element, and the impurities in the gas adhere to the surface of the filter element. Some impurities fall to the top of the ash guide plate and the bottom of the inner cavity of the pre-pump filter cavity under the action of gravity, and slide down to the ash cleaning port under the guidance of the ash guide plate. The filtered air is discharged through the exhaust port;

[0014] 2. When too much debris is accumulated on the surface of the filter element, the utility model injects nitrogen into the backflush pipe through the nitrogen inlet, and backflushes with nitrogen to blow off the debris accumulated on the surface of the filter element. The blown-off debris falls to the bottom of the inner cavity of the pre-pump filter cavity and the ash guide plate, and then the vacuum dust cleaning equipment connected to the ash cleaning port is used to remove the debris in the pre-pump filter cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a bottom-up stereogram of the structure of the utility model;

[0016] Figure 2 This is the axonometric drawing of the structure of the utility model;

[0017] Figure 3 This is a front sectional view of the structure of the utility model.

[0018] In the figure: 1. Pre-pump filter cavity; 2. Exhaust port; 3. Ash cleaning port; 4. Nitrogen inlet; 5. Air inlet; 6. Filter cover; 7. Rotating screw; 8. Top cover locking nut; 9. Ash guide plate; 10. Filter element; 11. Closing cover; 12. Backflush pipe; 13. Fixing nut; 14. Lifting frame; 15. Handle; 16. Mounting frame; 17. Closing assembly. DETAILED DESCRIPTION

[0019] See also Figure 1-Figure 3A pre-pump filter with a nitrogen backflush function comprises a pre-pump filter cavity 1, an exhaust port 2 is provided at the bottom of the pre-pump filter cavity 1, a ash cleaning port 3 is connected to the bottom of the left side of the pre-pump filter cavity 1, a nitrogen inlet 4 is provided at the rear side of the pre-pump filter cavity 1, an air inlet 5 is connected to the bottom of the right side of the pre-pump filter cavity 1, a closing component 17 is provided at the top of the pre-pump filter cavity 1, a filter element 10 is sleeved on the surface of the exhaust port 2, a closing cover 11 is clamped on the top of the filter element 10, a backflush pipe 12 is provided at the top of the closing cover 11, the bottom of the backflush pipe 12 is connected to the nitrogen inlet 4, and a fixing nut 13 is threadedly sleeved on the surface of the backflush pipe 12.

[0020] See also Figure 1 A sealing ring is clamped on the right side of the air inlet 5. By setting the sealing ring, the air inlet 5 and the gas injection equipment can be easily closed, which can effectively prevent gas leakage. A closing ring is welded at the bottom of the exhaust port 2. By setting the closing ring, the connection between the gas storage equipment and the exhaust port 2 can be easily closed, which can effectively prevent the filtered gas from leaking.

[0021] See also Figure 1 The front and rear sides of the pre-pump filter chamber 1 are welded with lifting frames 14. By setting the lifting frames 14, it is convenient for workers to grasp and move the pre-pump filter chamber 1. The bottom of the fixing nut 13 is in contact with the closing cover 11.

[0022] See also Figure 1 The sealing component 17 includes a mounting frame 16. The surface of the pre-pump filter cavity 1 is welded to the mounting frame 16. The top cover of the pre-pump filter cavity 1 is provided with a filter upper cover 6. By providing the filter upper cover 6, the top of the pre-pump filter cavity 1 can be easily sealed, and the gas in the pre-pump filter cavity 1 can be effectively prevented from leaking. The inner cavity of the mounting frame 16 is rotatably connected with a rotating screw rod 7. The top threaded sleeve of the rotating screw rod 7 is provided with a top cover locking nut 8. By providing the mounting frame 16, the rotating screw rod 7 and the top cover locking nut 8, the filter upper cover 6 can be easily fixed.

[0023] See also Figure 1 A handle 15 is welded on the top of the filter cover 6, and a groove is opened on the surface of the filter cover 6. The rotating screw rod 7 is used in conjunction with the groove. By setting the groove, the rotating screw rod 7 can be easily clamped, and the filter cover 6 can be easily fixed.

[0024] See also Figure 3 An ash guide plate 9 is welded to the inner wall of the pre-pump filter cavity 1. By providing the ash guide plate 9, it is convenient to guide the debris and make it easy for the debris to slide into the ash cleaning port 3. The surface of the exhaust port 2 is welded to the ash guide plate 9.

[0025] During use, the air inlet 5 is connected with the vacuum dust cleaning equipment, and the gas is injected into the pre-pump filter cavity 1 through the air inlet 5. The gas is filtered by the filter element 10, and the impurities in the gas will adhere to the surface of the filter element 10. Some of the impurities fall to the top of the ash guide plate 9 and the bottom of the inner cavity of the pre-pump filter cavity 1 under the action of gravity, and slide down to the cleaning port 3 under the guidance of the ash guide plate 9. The filtered air is discharged through the exhaust port 2. When there is too much impurity accumulation on the surface of the filter element 10, nitrogen is injected into the backflush pipe 12 through the nitrogen inlet 4. The nitrogen is backflushed to blow off the impurities accumulated on the surface of the filter element 10. The blown-off impurities fall to the bottom of the inner cavity of the pre-pump filter cavity 1 and the ash guide plate 9, and then the impurities are removed through the vacuum dust cleaning equipment connected to the cleaning port 3 to remove the impurities in the pre-pump filter cavity 1.

[0026] In summary: the pre-pump filter with nitrogen backflush function, through the backflush pipe 12, the fixing nut 13, the pulling frame 14, the handle 15, the mounting frame 16 and the closing assembly 17, solves the problem that during the use of the device, the filtered debris will adhere to the back of the filter element. When too much debris accumulates, the staff needs to disassemble the device for cleaning, which increases the workload of the staff and seriously affects the work efficiency.

Claims

1. A pre-pump filter with nitrogen backflush function, comprising a pre-pump filter cavity (1), characterized in that: An exhaust port (2) is provided through the bottom of the pre-pump filter cavity (1), a ash cleaning port (3) is connected to the bottom of the left side of the pre-pump filter cavity (1), a nitrogen inlet (4) is provided through the rear side of the pre-pump filter cavity (1), a gas inlet (5) is connected to the bottom of the right side of the pre-pump filter cavity (1), a sealing component (17) is provided at the top of the pre-pump filter cavity (1), a filter element (10) is sleeved on the surface of the exhaust port (2), a sealing cover (11) is clamped on the top of the filter element (10), a backflush pipe (12) is provided through the top of the sealing cover (11), the bottom of the backflush pipe (12) is connected to the nitrogen inlet (4), and a fixing nut (13) is threadedly sleeved on the surface of the backflush pipe (12).

2. A pre-pump filter with nitrogen backflush function according to claim 1, characterized in that: A sealing ring is clamped on the right side of the air inlet (5), and a sealing ring is welded on the bottom of the air outlet (2).

3. The pre-pump filter with nitrogen backflush function according to claim 1, characterized in that: The front and rear sides of the pre-pump filter cavity (1) are both welded with lifting frames (14), and the bottom of the fixing nut (13) is in contact with the closing cover (11).

4. The pre-pump filter with nitrogen backflush function according to claim 1, characterized in that: The sealing component (17) comprises a mounting frame (16), the surface of the pre-pump filter cavity (1) is welded to the mounting frame (16), the top cover of the pre-pump filter cavity (1) is provided with a filter upper cover (6), the inner cavity of the mounting frame (16) is rotatably connected with a rotating screw (7), and the top thread sleeve of the rotating screw (7) is provided with a top cover locking nut (8).

5. The pre-pump filter with nitrogen backflush function according to claim 4, characterized in that: A handle (15) is welded on the top of the filter upper cover (6), and a groove is provided on the surface of the filter upper cover (6), and the rotating screw (7) is used in conjunction with the groove.

6. The pre-pump filter with nitrogen backflush function according to claim 1, characterized in that: An ash guide plate (9) is welded to the inner wall of the pre-pump filter cavity (1), and the surface of the exhaust port (2) is welded to the ash guide plate (9).

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