Auxiliary mechanism based on dry-type chemical filtering device

Abstract

The utility model discloses an auxiliary mechanism based on a dry-type chemical filtering device, relates to the technical field of filtering equipment, and aims to provide the auxiliary mechanism based on the dry-type chemical filtering device, which can automatically clean a front filtering plate without stopping the machine. A vertical partition plate is arranged at the position, corresponding to the air outlet, in the box body, and two independent filtering areas are arranged between the two sides of the vertical partition plate and the box body. The technical effects are that the sewage disposal part and the steering part are arranged, the external exhaust fan works, and air in the filtering areas is pumped out through the sewage disposal hose, so that negative pressure is formed below the front filtering plate; the air flow is formed to reversely blow the front filter plate, blocked dust is blown out, meanwhile, the filter area on the other side is not affected, the filtering work is continued, the purpose of automatically cleaning the front filter plate under the non-stop condition is achieved, and the problem that the filtering efficiency is affected is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of filtering equipment, in particular to an auxiliary mechanism based on a dry chemical filtering device. Background Art

[0002] A dry chemical filter is a device that can purify conventional gases and harmful chemicals in the air. It is commonly used in industry, medical treatment and some large places. The front end of the dry chemical filter is usually equipped with a pre-filter plate for filtering and intercepting dust in the gas. These pre-filter plates have a large workload, resulting in a usually short service life and need to be cleaned frequently. Cleaning the pre-filter plate requires shutdown and takes a long time, which causes the filter to be unable to work for a long time, affecting the filtration efficiency and effect. Utility Model Content

[0003] 1. Technical issues to be solved

[0004] In view of the deficiencies in the prior art, the utility model provides an auxiliary mechanism based on a dry chemical filtering device which can automatically clean a pre-filter plate without stopping the machine.

[0005] (II) Technical solution

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an auxiliary mechanism based on a dry chemical filtration device, comprising a box body, an air outlet is provided on the box body, a vertical partition is provided at a position corresponding to the air outlet in the box body, two independent filter areas are provided between the two sides of the vertical partition and the box body, both filter areas are provided with a pre-filter plate and a chemical filter unit, and an air intake hood connected to the vertical partition and the box body is provided under the two filter areas, an air intake pipe is provided on the side of the box body near the bottom end, and a cleaning component and a steering component are provided on the side of the air intake pipe;

[0007] The dirt cleaning component includes an external exhaust fan, a dirt cleaning hard pipe and a dirt cleaning hose. The external exhaust fan is arranged in the dirt cleaning hard pipe. A solenoid valve is arranged in the dirt cleaning hard pipe. The dirt cleaning hose is connected to the steering component, and one end of the dirt cleaning hose is connected to the dirt cleaning hard pipe, and the other end of the dirt cleaning hose is aligned with the air intake hood.

[0008] Preferably, the steering component includes a motor, a rotating shaft and a bogie, the motor is arranged in a box, and the motor is used to drive the rotating shaft to reciprocate 180 degrees, the bogie is arranged on the side of the rotating shaft, and the bogie is connected to the upper end of the cleaning hose.

[0009] Preferably, a flat partition is provided near the bottom of the box body, and the flat partition is provided with perforations for the passage of a sewage cleaning hose and an air intake pipe, and is sealedly connected to the sewage cleaning hose and the air intake pipe.

[0010] Preferably, the flat partition is a waste gas transfer area, the flat partition is an equipment placement area, and a sealing sleeve is provided inside the flat partition, and the sealing sleeve is rotatably connected to the rotating shaft.

[0011] Preferably, an inspection door is provided on the box body at a position corresponding to the filter area, and a differential pressure gauge for detecting the pressure difference between the upper and lower parts of the pre-filter plate is provided on the inspection door, and the differential pressure gauge is used to detect the pressure difference between the upper part and the lower part of the pre-filter plate.

[0012] Preferably, an air intake check valve is provided at positions corresponding to the filter areas on both sides of the box body, and the air intake check valve is located between the pre-filter plate and the chemical filter unit. The check valve opens into the box body after being pressurized.

[0013] Preferably, position sensors are respectively provided on both sides of the inner wall of the box body, the positions of the position sensors are aligned with the bogie, and the position sensors are used to detect the positions of the bogie and the cleaning hose.

[0014] (III) Beneficial effects

[0015] Compared with the prior art, the utility model provides an auxiliary mechanism based on a dry chemical filtration device, which has the following beneficial effects:

[0016] 1. By setting a cleaning component and a steering component, when the pre-filter plate needs to be cleaned, the steering component drives the cleaning hose to rotate to the corresponding air inlet hood, so that the cleaning hose is connected to the air inlet hood and the corresponding filter area, and then the external exhaust fan works to extract the air in the filter area through the cleaning hose, so that negative pressure is formed under the pre-filter plate, and then the air pressure on the upper part of the pre-filter plate is higher than that on the lower part, forming an airflow to back-blow the pre-filter plate, blowing out the clogged dust, and being discharged by the external exhaust fan. At the same time, the filter area on the other side is not affected and continues to perform filtering work, thereby achieving the purpose of automatically cleaning the pre-filter plate without stopping the machine and avoiding the problem of affecting the filtering efficiency.

[0017] 2. By setting up vertical partitions and flat partitions, the vertical partitions cooperate with the air intake hood to form two independent filtering areas in the box. During filtering, the dirty gas enters the box through the inlet pipe and then enters the filtering area through the inlet hood. During cleaning, the cleaning hose can be aligned with the corresponding air intake hood to stop filtering in the corresponding filtering area and start cleaning. The flat partition can divide the interior of the box so that the upper part of the flat partition is the dirty gas transfer area. The dirty gas can enter the unclosed inlet filtering area in this area. At the same time, the flat partition is used to place the motor and the external exhaust fan under it to prevent the dirty gas from corroding and damaging the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0019] Figure 2 It is a three-dimensional schematic diagram of the box body of the utility model;

[0020] Figure 3 It is a schematic diagram of the cross section of the box body of the utility model;

[0021] Figure 4 It is a three-dimensional schematic diagram of the dirt cleaning component of the utility model.

[0022] In the figure: 1. Box body; 2. Air inlet pipe; 3. Air inlet non-return valve; 4. Air outlet; 5. Inspection door; 6. Pressure differential gauge; 7. Cleaning component; 71. External exhaust fan; 72. Cleaning hard pipe; 73. Cleaning hose; 8. Steering component; 81. Motor; 82. Rotating shaft; 83. Bogie; 9. Flat partition; 10. Sealing bushing; 11. Air inlet hood; 12. Pre-filter plate; 13. Chemical filter unit; 14. Position sensor; 15. Vertical partition. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-4, an auxiliary mechanism based on a dry chemical filtration device, comprising a box body 1, an air outlet 4 is arranged on the box body 1, a vertical partition 15 is arranged at a position corresponding to the air outlet 4 in the box body 1, two independent filter areas are arranged between the two sides of the vertical partition 15 and the box body 1, both filter areas are provided with a pre-filter plate 12 and a chemical filter unit 13, and an air intake cover 11 connected to the vertical partition 15 and the box body 1 is arranged under the two filter areas, an air intake pipe 2 is arranged on the side of the box body 1 near the bottom end, and a cleaning component 7 and a steering component 8 are arranged on the side of the air intake pipe 2;

[0025] By setting up the air intake hood 11 and the vertical partition 15, the vertical partition 15 can divide two independent filter areas in the box body 1. The two filter areas can work alternately during cleaning to achieve the purpose of non-stop cleaning. At the same time, the bottom end of the air intake hood 11 has the same caliber as the cleaning hose 73, so that the cleaning hose 73 can fit the air intake hood 11 to achieve the purpose of cleaning and discharging sewage.

[0026] The dirt cleaning component 7 includes an external exhaust fan 71, a dirt cleaning hard pipe 72 and a dirt cleaning hose 73. The external exhaust fan 71 is arranged in the dirt cleaning hard pipe 72. A solenoid valve is arranged in the dirt cleaning hard pipe 72. The dirt cleaning hose 73 is connected to the steering component 8. One end of the dirt cleaning hose 73 is connected to the dirt cleaning hard pipe 72, and the other end of the dirt cleaning hose 73 is aligned with the air intake cover 11.

[0027] By setting up the external exhaust fan 71 and the cleaning hard pipe 72, the external exhaust fan 71 can draw out the air in the filter area after the cleaning hose 73 is attached to the air inlet hood 11, so as to form a negative pressure backblowing to achieve the purpose of automatic cleaning. At the same time, the cleaning hard pipe 72 uses the solenoid valve arranged inside to open the solenoid valve when the exhaust fan is working to ensure the circulation of gas. When the external exhaust fan 71 is not working, the solenoid valve is closed to prevent the dirty gas from overflowing through the cleaning hose 73 and the cleaning hard pipe 72.

[0028] The steering component 8 includes a motor 81, a rotating shaft 82 and a bogie 83. The motor 81 is disposed in the box 1 and is used to drive the rotating shaft 82 to reciprocate by 180 degrees. The bogie 83 is disposed on the side of the rotating shaft 82 and is connected to the upper end of the cleaning hose 73.

[0029] By setting the rotating shaft 82 and the bogie 83, the rotating shaft 82 supports and limits the bogie 83, so that the bogie 83 can rotate stably driven by the rotating shaft 82. At the same time, the bogie 83 can drive the top end of the cleaning hose 73 to rotate, thereby achieving the purpose of driving the cleaning hose 73 to the corresponding air intake hood 11.

[0030] A flat partition 9 is provided near the bottom of the box body 1. The flat partition 9 is provided with a perforation for the cleaning hose 73 and the air inlet pipe 2 to pass through, and is sealed and connected to the cleaning hose 73 and the air inlet pipe 2. The flat partition 9 is a waste gas transfer area, and the flat partition 9 is provided below the equipment placement area. A sealing sleeve 10 is provided inside the flat partition 9, and the sealing sleeve 10 is rotatably connected to the rotating shaft 82.

[0031] By setting a flat partition 9 and a sealing sleeve 10, the flat partition 9 divides the box body 1 so that the upper part forms a waste gas transfer area and the lower part forms an equipment placement area, so that the waste gas can be stored in the transfer area and then enter the filter area through the air intake hood 11. At the same time, the motor 81 and the external exhaust fan 71 are protected to prevent them from being corroded and damaged by the waste gas.

[0032] An inspection door 5 is provided at a position corresponding to the filter area on the box body 1, and a pressure differential gauge 6 for detecting the pressure difference between the upper and lower parts of the pre-filter plate 12 is provided on the inspection door 5. The pressure differential gauge 6 is used to detect the pressure difference between the upper part and the lower part of the pre-filter plate 12;

[0033] By setting the differential pressure gauge 6, the differential pressure gauge 6 can detect the pressure difference between the upper and lower parts of the pre-filter plate 12. When the pre-filter plate 12 is blocked by dust, the airflow rate is reduced. At this time, the air pressure at the lower part of the pre-filter plate 12 is higher than the air pressure at the upper part. When the difference reaches the set value, the differential pressure gauge 6 sends a signal.

[0034] An air intake check valve 3 is provided at the positions corresponding to the filter areas on both sides of the box body 1. The air intake check valve 3 is located between the pre-filter plate 12 and the chemical filter unit 13. The check valve is opened toward the box body 1 after being pressurized.

[0035] By setting the air intake check valve 3, when cleaning the pre-filter plate 12, the air in the filter area will be blown back to the pre-filter plate 12, so that the air in the filter area is gradually reduced. At this time, the external air pressure is higher than the internal air pressure, and enters the filter area through the air intake check valve 3, so as to supplement the filter area with sufficient airflow to ensure the flow rate of the back-blowing airflow, so as to improve the efficiency of cleaning the pre-filter plate 12.

[0036] Position sensors 14 are provided on both sides of the inner wall of the box body 1. The position of the position sensor 14 is aligned with the bogie 83. The position sensor 14 is used to detect the position of the bogie 83 and the cleaning hose 73.

[0037] By setting the position sensor 14, the position sensor 14 is the front device of the external exhaust fan 71. Only when the position sensor 14 senses that the bogie 83 and the cleaning hose 73 are in the accurate position, the external exhaust fan 71 will release the restriction and have the external exhaust function, preventing the external exhaust fan 71 from starting when the cleaning hose 73 is not aligned with the air intake hood 11, avoiding the problem of discharging dirty air.

[0038] Working principle:

[0039] During filtering, the polluted air enters the box body 1 through the air intake pipe 2, and then enters the filter area through the air intake hood 11, and is discharged through the air outlet 4 after being filtered by the pre-filter plate 12 and the chemical filter unit 13. The pressure differential gauge 6 detects the pressure difference between the upper and lower parts of the pre-filter plate 12. When the pressure difference reaches the set value, the motor 81 drives the cleaning hose 73 to rotate to the corresponding under the air intake hood 11 through the rotating shaft 82 and the bogie 83. Then, after the position sensor 14 senses that the cleaning hose 73 has moved to the corresponding position, it sends a signal to open the external exhaust fan 71. The external exhaust fan 71 discharges the air in the filter area through the cleaning hose 73, so that a negative pressure is formed under the pre-filter plate 12. At this time, the air pressure on the pre-filter plate 12 is higher than that at the lower part, so that the air flow circulates downward, forming a back-blowing effect, blowing out the dust in the pre-filter plate 12 so that it is discharged by the external exhaust fan 71, and the air intake check valve 3 supplies air to the box body 1 to ensure the back-blowing air volume of the pre-filter plate 12.

[0040] The above are only specific embodiments of the utility model, but the technical features of the utility model are not limited thereto. Any simple changes, equivalent replacements or modifications made based on the utility model to solve basically the same technical problems and achieve basically the same technical effects are all included in the protection scope of the utility model.

Claims

1. An auxiliary mechanism based on a dry chemical filtration device, comprising a housing (1), characterized in that: The box body (1) is provided with an air outlet (4), a vertical partition (15) is provided at a position corresponding to the air outlet (4) in the box body (1), two independent filter areas are provided between the two sides of the vertical partition (15) and the box body (1), both filter areas are provided with a pre-filter plate (12) and a chemical filter unit (13), and an air intake hood (11) connected to the vertical partition (15) and the box body (1) is provided under the two filter areas, an air intake pipe (2) is provided on the side of the box body (1) near the bottom end, and a cleaning component (7) and a steering component (8) are provided on the side of the air intake pipe (2); The dirt cleaning component (7) comprises an external exhaust fan (71), a dirt cleaning hard pipe (72) and a dirt cleaning hose (73); the external exhaust fan (71) is arranged in the dirt cleaning hard pipe (72); a solenoid valve is arranged in the dirt cleaning hard pipe (72); the dirt cleaning hose (73) is connected to the steering component (8); one end of the dirt cleaning hose (73) is connected to the dirt cleaning hard pipe (72); and the other end of the dirt cleaning hose (73) is aligned with the air intake hood (11).

2. The auxiliary mechanism based on the dry chemical filtration device according to claim 1, characterized in that: The steering component (8) comprises a motor (81), a rotating shaft (82) and a bogie (83); the motor (81) is arranged in the box body (1) and is used to drive the rotating shaft (82) to rotate; the bogie (83) is arranged on the side of the rotating shaft (82) and is connected to the upper end of the cleaning hose (73).

3. The auxiliary mechanism based on the dry chemical filtration device according to claim 2, characterized in that: A flat partition (9) is provided near the bottom of the box body (1); the flat partition (9) is provided with holes for the passage of a cleaning hose (73) and an air intake pipe (2), and is sealedly connected to the cleaning hose (73) and the air intake pipe (2).

4. The auxiliary mechanism based on the dry chemical filtration device according to claim 3 is characterized in that: A sealing sleeve (10) is provided inside the flat partition (9), and the sealing sleeve (10) is rotatably connected to the rotating shaft (82).

5. The auxiliary mechanism based on the dry chemical filtration device according to claim 1, characterized in that: An inspection door (5) is provided on the box body (1) at a position corresponding to the filter area, and a pressure differential gauge (6) for detecting the upper and lower pressure differences of the pre-filter plate (12) is provided on the inspection door (5).

6. The auxiliary mechanism based on the dry chemical filtration device according to claim 1, characterized in that: Air intake check valves (3) are provided at positions corresponding to the filter areas on both sides of the box body (1), and the air intake check valves (3) are located between the pre-filter plate (12) and the chemical filter unit (13).

7. The auxiliary mechanism based on the dry chemical filtration device according to claim 2, characterized in that: Position sensors (14) are respectively provided on both sides of the inner wall of the box body (1), and the positions of the position sensors (14) are aligned with the bogie (83).

Images