Back-blowing prefilter

Abstract

The invention relates to the technical field of air filter elements, in particular to a blowback prefilter which comprises a shell of a cylindrical structure, an installation pipe communicated with the shell is fixedly connected to the outer wall of the bottom of the shell, the same control mechanism is installed on the outer wall of one side of the installation pipe and the outer wall of one side of the shell, and the same cleaning mechanism is installed on the inner wall of the installation pipe and the inner wall of the shell. The cleaning mechanism comprises a fixing frame fixedly connected to the inner wall of the shell, a cleaning pipe is installed on the inner wall of the fixing frame, and a cleaning assembly is slidably installed on the outer wall of the cleaning pipe. The defects in the prior art are overcome, the cleaning mechanism is arranged in the shell, and the cleaning mechanism and the control assembly are matched, so that the filter element in the shell can be conveniently subjected to back-flushing cleaning, the cleaning frequency of the filter element is effectively reduced, the control assembly can conveniently control on-off of airflow in the cleaning mechanism, and the cleaning efficiency is improved. Meanwhile, the situation of air leakage at the control assembly during normal filtering is avoided, and the problem that an existing air filter element needs to be cleaned frequently is solved.

Description

Technical Field

[0001] The invention relates to the technical field of air filter elements, in particular to a back-blowing pre-filter. Background Art

[0002] An air filter element is a type of filter, also known as an air filter cartridge, air cleaner, or style. It's primarily used for air filtration in engineering vehicles, automobiles, agricultural vehicles, laboratories, sterile operating rooms, and various precision operating rooms. Mining areas, especially coal mines, have high dust levels, nearly ten times higher than those found on ordinary commercial vehicles operating on public roads. Operating in such an environment overloads the air filter, necessitating frequent cleaning, which increases the workload.

[0003] Traditional air filters need to be cleaned regularly during use. Once the cleaning frequency decreases, the air intake effect of the filter will decrease, which will directly affect the normal operation of the engine. At the same time, frequent cleaning of the filter will directly affect the working efficiency of the machine. Summary of the Invention

[0004] The purpose of the present invention is to solve or at least alleviate the problems existing in the prior art.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a back-blowing pre-filter, comprising a cylindrical shell, a bottom outer wall of the shell fixedly connected to a mounting tube connected to the shell, the mounting tube and one side outer wall of the shell are installed with the same control mechanism, the mounting tube and the inner wall of the shell are installed with the same cleaning mechanism, the cleaning mechanism comprises a fixed frame fixedly connected to the inner wall of the shell, and a cleaning tube is installed on the inner wall of the fixed frame, a cleaning assembly is slidably installed on the outer wall of the cleaning tube, a driving assembly is installed on the bottom outer wall of the cleaning tube, the control mechanism comprises a control frame fixedly connected to the shell and the mounting tube, and a control box is installed on the control frame, and a control assembly connected to the cleaning assembly is also installed on the outer wall of the control frame.

[0006] By adopting the above structure, a cleaning mechanism is set in the shell, the setting of the cleaning mechanism facilitates the cleaning of the auxiliary pre-filter, the setting of the control mechanism facilitates the cleaning of the pre-filter by the auxiliary cleaning mechanism, the setting of the fixing frame facilitates the installation of the cleaning tube, the setting of the cleaning tube facilitates the sliding installation of the cleaning component, and the setting of the driving component facilitates the driving of the cleaning component to rise and fall.

[0007] Optionally, the cleaning assembly includes a driving sleeve, and the outer wall of the driving sleeve is provided with a plurality of grooves distributed at equal distances, and the inner wall of the groove is installed with a recoil nozzle.

[0008] By adopting the above structure, the arrangement of the driving sleeve facilitates the installation of the recoil nozzle, and the arrangement of the recoil nozzle facilitates the backflushing cleaning of the pre-filter.

[0009] Optionally, the outer wall of the cleaning tube is provided with three equally spaced arc-shaped openings, and the inner walls of the three arc-shaped openings are slidably connected to the same mounting sleeve, the mounting sleeve is fixedly connected to the driving sleeve, the inner wall of the cleaning tube is rotatably connected to a screw, and the mounting sleeve is threaded onto the outer wall of the screw.

[0010] By adopting the above structure, the arc-shaped opening on the cleaning tube facilitates the sliding installation of the mounting sleeve. When the screw rotates, the mounting sleeve is directly driven to move. When the mounting sleeve moves, it is convenient to directly drive the recoil nozzle to adjust the height, thereby comprehensively cleaning the pre-filter, thereby reducing the cleaning frequency of the pre-filter.

[0011] Optionally, the drive assembly includes a drive box fixedly connected to the cleaning tube, and a servo motor is fixedly connected to the inner wall of the drive box, the output shaft of the servo motor is fixedly connected to the screw, a ventilation hole is opened on the outer wall of the bottom of the drive box, and a protective net is fixedly connected to the inner wall of the ventilation hole.

[0012] By adopting the above structure, the servo motor can be easily installed through the setting of the drive box. When the servo motor is started, it directly drives the screw to rotate. The protective net on the drive box facilitates the heat dissipation of the servo motor.

[0013] Optionally, the control component includes a conical tube fixedly connected to the control frame, and the conical tube is connected to the recoil nozzle through a hose, the bottom outer wall of the conical tube is fixedly connected to a connecting tube connected to the conical tube, the inner wall of the conical tube is fixedly connected to a connecting frame, and the inner wall of the connecting frame is installed with an adjustment component, and the bottom outer wall of the adjustment component is installed with a sealing plug.

[0014] By adopting the above structure, the setting of the tapered tube facilitates the delivery of airflow to the recoil nozzle, and the setting of the adjustment component facilitates the driving of the sealing plug to control the opening and closing of the tapered tube, thereby avoiding air leakage from the tapered tube when the pre-filter is working normally.

[0015] Optionally, the adjustment assembly includes an adjustment box fixedly connected to the connecting frame, and the inner wall of the adjustment box is fixedly connected to two mounting rods, the outer walls of the two mounting rods are slidably connected to the same sliding seat, and the bottom outer wall of the sliding seat is fixedly connected to a drive column, and one end of the drive column is fixedly connected to the sealing plug.

[0016] By adopting the above structure, the sliding seat can be easily installed by setting the installation rod in the adjustment box. When the sliding seat slides, the driving column is driven to adjust the position of the sealing plug, thereby controlling the opening and closing of the tapered tube.

[0017] Optionally, the outer walls of the two mounting rods are both sleeved with springs, the outer walls of the two mounting rods are slidably connected to the same adjustment bracket, the top inner wall of the adjustment box is rotatably connected to a bolt rod, the adjustment bracket is screwed on the outer wall of the bolt rod, the top outer wall of the adjustment box is rotatably connected to a rotating part, one end of the transmission shaft of the rotating part is fixedly connected to the bolt rod, and the cross-section of the rotating part is a regular hexagonal structure.

[0018] By adopting the above structure, the sliding seat is driven downward by the springs on the two mounting rods, thereby facilitating the sealing plug to close the tapered tube. When the elastic force of the spring needs to be adjusted, the rotating part rotates to drive the bolt rod to rotate. When the bolt rod rotates, it drives the adjusting frame to compress the spring, thereby adjusting the elastic force of the spring.

[0019] Optionally, a filter element is placed on the inner wall of the shell, the cleaning mechanism is located inside the filter element, and a flange is fixedly connected to the outer wall of the bottom of the mounting tube.

[0020] By adopting the above structure, the arrangement of the filter element facilitates filtering of the air entering the housing, and the arrangement of the cleaning mechanism facilitates cleaning of impurities adhering to the filter element.

[0021] Optionally, an opening is provided on the top outer wall of the shell, and a box cover is screwed onto the inner wall of the opening, and a plurality of air inlet holes distributed at equal distances are provided on the top outer wall of the box cover.

[0022] By adopting the above structure, the filter element can be easily replaced through the openable box cover, and the provision of the air inlet hole facilitates the outside air to enter the housing.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] (1) The present invention provides a cleaning mechanism in the housing, and the cooperation between the cleaning mechanism and the control component facilitates backflushing and cleaning of the filter element in the housing, thereby effectively reducing the frequency of cleaning the filter element. The control component conveniently controls the on-off of the airflow in the cleaning mechanism, while avoiding air leakage at the control component during normal filtration, thereby solving the problem of frequent cleaning of the existing air filter element.

[0025] (2) The present invention arranges a screw in the cleaning tube, and the cooperation between the screw and the drive sleeve facilitates the lifting and lowering of the cleaning assembly, thereby facilitating comprehensive backwashing of the filter element. The drive assembly is arranged on the cleaning tube to facilitate the direct driving of the screw to rotate, thereby adjusting the height of the backwash nozzle. The arrangement of the adjustment assembly in the control assembly facilitates the driving of the sealing plug to close the conical tube, thereby effectively avoiding air leakage in the conical tube during the filtration process. During the backwashing process, the airflow lifts the sealing plug to open the conical tube, and cooperates with the backwash nozzle to flush the filter element. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention;

[0028] Figure 3 Schematic diagram of the housing structure of the present invention;

[0029] Figure 4 It is a schematic structural diagram of the cleaning mechanism of the present invention;

[0030] Figure 5 This is a schematic structural diagram of the cleaning component of the present invention;

[0031] Figure 6 This is a schematic diagram of the cross-sectional structure of the installation pipe of the present invention;

[0032] Figure 7 This is a schematic diagram of the structure of the drive assembly of the present invention;

[0033] Figure 8 This is a schematic diagram of the control component structure of the present invention;

[0034] Figure 9 It is a schematic diagram of the structure of the regulating component of the present invention.

[0035] In the figure: 1. Housing; 2. Control mechanism; 3. Mounting pipe; 4. Flange; 5. Filter element; 6. Box cover; 7. Air inlet; 8. Control box; 9. Control assembly; 10. Cleaning mechanism; 11. Cleaning pipe; 12. Drive assembly; 13. Arc-shaped mouth; 14. Cleaning assembly; 15. Screw; 16. Drive sleeve; 17. Mounting sleeve; 18. Recoil nozzle; 19. Fixed bracket; 20. Protective net; 21. Servo motor; 22. Drive box; 23. Connecting bracket; 24. Adjusting assembly; 25. Sealing plug; 26. Connecting pipe; 27. Conical pipe; 28. Bolt rod; 29. Adjusting bracket; 30. Mounting rod; 31. Spring; 32. Drive column; 33. Adjusting box; 34. Rotating part; 35. Sliding seat. DETAILED DESCRIPTION

[0036] 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.

[0037] See also Figure 1-3The back-blowing pre-filter comprises a cylindrical shell 1, the bottom outer wall of the shell 1 is fixedly connected with a mounting pipe 3 connected to the shell 1, the mounting pipe 3 and one side outer wall of the shell 1 are installed with the same control mechanism 2, the mounting pipe 3 and the inner wall of the shell 1 are installed with the same cleaning mechanism 10, the cleaning mechanism 10 comprises a fixed frame 19 fixedly connected to the inner wall of the shell 1, and a cleaning pipe 11 is installed on the inner wall of the fixed frame 19, a cleaning assembly 14 is slidably mounted on the outer wall of the cleaning pipe 11, and a driving assembly 12 is installed on the bottom outer wall of the cleaning pipe 11, the control mechanism 2 comprises a control frame fixedly connected to the shell 1 and the mounting pipe 3, and a control box 8 is installed on the control frame, and a control assembly 9 connected to the cleaning assembly 14 is also installed on the outer wall of the control frame.

[0038] During use, a cleaning mechanism 10 is set in the outer shell 1. The setting of the cleaning mechanism 10 facilitates the cleaning of the auxiliary pre-filter, the setting of the control mechanism 2 facilitates the cleaning of the pre-filter by the auxiliary cleaning mechanism 10, the setting of the fixing frame 19 facilitates the installation of the cleaning tube 11, the setting of the cleaning tube 11 facilitates the sliding installation of the cleaning component 14, and the setting of the driving component 12 facilitates the driving of the cleaning component 14 to rise and fall.

[0039] For details, please refer to Figure 4-6 The cleaning assembly 14 includes a driving sleeve 16, and the outer wall of the driving sleeve 16 is provided with a plurality of grooves distributed at equal distances, and the inner wall of the groove is provided with a recoil nozzle 18. The outer wall of the cleaning tube 11 is provided with three arc-shaped openings 13 distributed at equal distances, and the inner walls of the three arc-shaped openings 13 are slidably connected with the same mounting sleeve 17, and the mounting sleeve 17 is fixedly connected to the driving sleeve 16. The inner wall of the cleaning tube 11 is rotatably connected with a screw 15, and the mounting sleeve 17 is screwed on the outer wall of the screw 15. The setting of the driving sleeve 16 is convenient for installing the recoil nozzle 18, and the setting of the recoil nozzle 18 is convenient for backflushing cleaning of the pre-filter. The arc-shaped opening 13 on the cleaning tube 11 is convenient for sliding installation of the mounting sleeve 17. When the screw 15 rotates, it directly drives the mounting sleeve 17 to move. When the mounting sleeve 17 moves, it is convenient to directly drive the recoil nozzle 18 to adjust the height, thereby comprehensively cleaning the pre-filter, thereby reducing the cleaning frequency of the pre-filter.

[0040] For details, please refer to Figure 6-7 The drive assembly 12 includes a drive box 22 fixedly connected to the cleaning tube 11, and the inner wall of the drive box 22 is fixedly connected to the servo motor 21, the output shaft of the servo motor 21 is fixedly connected to the screw 15, and a vent is opened on the outer wall of the bottom of the drive box 22, and the inner wall of the vent is fixedly connected to the protective net 20. The setting of the drive box 22 facilitates the installation of the servo motor 21. When the servo motor 21 is started, it directly drives the screw 15 to rotate. The protective net 20 on the drive box 22 facilitates the heat dissipation of the servo motor 21.

[0041] For details, please refer to Figure 8-9 The control component 9 includes a conical tube 27 fixedly connected to the control frame, and the conical tube 27 is connected to the backflushing nozzle 18 through a hose. The outer wall of the bottom of the conical tube 27 is fixedly connected with a connecting pipe 26 connected to the conical tube 27. The inner wall of the conical tube 27 is fixedly connected with a connecting frame 23, and the inner wall of the connecting frame 23 is installed with an adjusting component 24. The outer wall of the bottom of the adjusting component 24 is installed with a sealing plug 25. The setting of the conical tube 27 facilitates the delivery of airflow to the backflushing nozzle 18. The setting of the adjusting component 24 facilitates the driving of the sealing plug 25 to control the on and off of the conical tube 27, thereby avoiding air leakage from the conical tube 27 when the pre-filter is working normally.

[0042] For details, please refer to Figure 8-9 The adjusting assembly 24 includes an adjusting box 33 fixedly connected to the connecting frame 23, and the inner wall of the adjusting box 33 is fixedly connected to two mounting rods 30, the outer walls of the two mounting rods 30 are slidably connected to the same sliding seat 35, and the bottom outer wall of the sliding seat 35 is fixedly connected to a driving column 32, one end of the driving column 32 is fixedly connected to the sealing plug 25, the outer walls of the two mounting rods 30 are sleeved with springs 31, the outer walls of the two mounting rods 30 are slidably connected to the same adjusting frame 29, the top inner wall of the adjusting box 33 is rotatably connected to the bolt rod 28, the adjusting frame 29 is screwed on the outer wall of the bolt rod 28, the top outer wall of the adjusting box 33 is rotatably connected to the rotating part 34, the rotating part 34 One end of the transmission shaft is fixedly connected to the bolt rod 28. The cross-section of the rotating part 34 is a regular hexagonal structure. The setting of the mounting rod 30 in the adjustment box 33 facilitates the sliding installation of the sliding seat 35. When the sliding seat 35 slides, it drives the driving column 32 to adjust the position of the sealing plug 25, thereby controlling the on and off of the tapered tube 27. The springs 31 on the two mounting rods 30 drive the sliding seat 35 to move downward, thereby facilitating the sealing plug 25 to close the tapered tube 27. When the elastic force of the spring 31 needs to be adjusted, the rotating part 34 rotates to drive the bolt rod 28 to rotate. When the bolt rod 28 rotates, it drives the adjusting frame 29 to compress the spring 31, thereby adjusting the elastic force of the spring 31.

[0043] For details, please refer to Figure 1-3 A filter element 5 is placed on the inner wall of the shell 1, and a cleaning mechanism 10 is located inside the filter element 5. A flange 4 is fixedly connected to the outer wall of the bottom of the mounting tube 3. The setting of the filter element 5 is convenient for filtering the air entering the shell 1, and the setting of the cleaning mechanism 10 is convenient for cleaning impurities adhering to the filter element 5. An opening is provided on the top outer wall of the shell 1, and a box cover 6 is screwed on the inner wall of the opening. A plurality of air inlet holes 7 distributed at equal distances are provided on the outer wall of the top of the box cover 6. The filter element 5 can be conveniently replaced through the openable box cover 6. The setting of the air inlet hole 7 facilitates the outside air to enter the shell 1.

[0044] Working principle: When in use, the outside world enters the housing 1 through the air inlet 7 on the box cover 6, and is discharged from the installation tube 3 after being filtered by the filter element 5, thereby achieving filtration of the air. When the filter element 5 needs to be cleaned, the backflush fan is started and the air is transported to the backflush nozzle 18 through the control component 9 to backflush the filter element 5. At the same time, the servo motor 21 is started to directly drive the screw 15 to rotate. When the screw 15 rotates, it drives the drive sleeve 16 to move. When the drive sleeve 16 moves, it drives the backflush nozzle 18 on the installation sleeve 17 to adjust the height, thereby facilitating a comprehensive backflush of the filter element 5. At the same time, the drive sleeve 1 When the backwash blower 6 moves back and forth, it is convenient to carry out comprehensive cleaning of the filter element 5. When the backwash blower is started, the sealing plug 25 is directly lifted by the airflow. When the sealing plug 25 is opened, the sliding seat 35 is directly pushed by the driving column 32 to compress the spring 31. When the backwash blower stops, the two springs 31 directly drive the sliding seat 35 to reset. When the elastic force of the spring 31 decays, the rotating part 34 is rotated. The rotation of the rotating part 34 drives the bolt rod 28 to rotate, thereby facilitating the adjustment of the position of the adjustment frame 29. When the adjustment frame 29 moves downward, the spring 31 is compressed, thereby realizing the adjustment of the elastic force of the spring 31.

[0045] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A backflush prefilter, comprising a cylindrical housing (1), characterized in that: The outer wall at the bottom of the shell (1) is fixedly connected to a mounting tube (3) in communication with the shell (1); the mounting tube (3) and one side outer wall of the shell (1) are installed with a same control mechanism (2); the mounting tube (3) and the inner wall of the shell (1) are installed with a same cleaning mechanism (10); the cleaning mechanism (10) comprises a fixing frame (19) fixedly connected to the inner wall of the shell (1); a cleaning tube (11) is installed on the inner wall of the fixing frame (19); a cleaning assembly (14) is slidably mounted on the outer wall of the cleaning tube (11); a driving assembly (12) is installed on the outer wall of the bottom of the cleaning tube (11); the control mechanism (2) comprises a control frame fixedly connected to the shell (1) and the mounting tube (3); a control box (8) is installed on the control frame; and a control assembly (9) connected to the cleaning assembly (14) is also installed on the outer wall of the control frame.

2. The backflush prefilter according to claim 1, characterized in that: The cleaning assembly (14) comprises a driving sleeve (16), and the outer wall of the driving sleeve (16) is provided with a plurality of grooves distributed at equal distances, and the inner wall of the groove is provided with a recoil nozzle (18).

3. The backflush prefilter according to claim 2, characterized in that: The outer wall of the cleaning tube (11) is provided with three equally spaced arc-shaped openings (13), and the inner walls of the three arc-shaped openings (13) are slidably connected to a same mounting sleeve (17), the mounting sleeve (17) is fixedly connected to the driving sleeve (16), the inner wall of the cleaning tube (11) is rotatably connected to a screw (15), and the mounting sleeve (17) is screwed to the outer wall of the screw (15).

4. The backflush prefilter according to claim 3, characterized in that: The drive assembly (12) comprises a drive box (22) fixedly connected to the cleaning tube (11), and the inner wall of the drive box (22) is fixedly connected to a servo motor (21), the output shaft of the servo motor (21) is fixedly connected to the screw (15), and a ventilation hole is opened on the outer wall of the bottom of the drive box (22), and a protective net (20) is fixedly connected to the inner wall of the ventilation hole.

5. The backflush prefilter according to claim 4, characterized in that: The control assembly (9) comprises a conical tube (27) fixedly connected to the control frame, and the conical tube (27) is connected to the recoil nozzle (18) through a hose, the outer wall of the bottom of the conical tube (27) is fixedly connected to a connecting tube (26) communicating with the conical tube (27), the inner wall of the conical tube (27) is fixedly connected to a connecting frame (23), and the inner wall of the connecting frame (23) is installed with an adjusting assembly (24), and the outer wall of the bottom of the adjusting assembly (24) is installed with a sealing plug (25).

6. The backflush prefilter according to claim 5, characterized in that: The adjustment assembly (24) includes an adjustment box (33) fixedly connected to the connecting frame (23), and the inner wall of the adjustment box (33) is fixedly connected to two mounting rods (30), the outer walls of the two mounting rods (30) are slidably connected to the same sliding seat (35), and the bottom outer wall of the sliding seat (35) is fixedly connected to a driving column (32), and one end of the driving column (32) is fixedly connected to the sealing plug (25).

7. The backflush prefilter according to claim 6, characterized in that: The outer walls of the two mounting rods (30) are both sleeved with springs (31), the outer walls of the two mounting rods (30) are slidably connected to the same adjustment frame (29), the top inner wall of the adjustment box (33) is rotatably connected to the bolt rod (28), the adjustment frame (29) is screwed on the outer wall of the bolt rod (28), the top outer wall of the adjustment box (33) is rotatably connected to the rotating part (34), one end of the transmission shaft of the rotating part (34) is fixedly connected to the bolt rod (28), and the cross-section of the rotating part (34) is a regular hexagonal structure.

8. The backflush prefilter according to claim 7, characterized in that: A filter element (5) is placed on the inner wall of the housing (1), the cleaning mechanism (10) is located inside the filter element (5), and a flange (4) is fixedly connected to the outer wall of the bottom of the mounting tube (3).

9. The backflush prefilter according to claim 8, characterized in that: The outer wall of the top of the housing (1) is provided with an opening, and a box cover (6) is screwed to the inner wall of the opening. The outer wall of the top of the box cover (6) is provided with a plurality of air inlet holes (7) distributed at equal distances.

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