CN216842406U - Fan filter screen structure with self-cleaning function - Google Patents
Fan filter screen structure with self-cleaning function Download PDFInfo
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- CN216842406U CN216842406U CN202122801170.8U CN202122801170U CN216842406U CN 216842406 U CN216842406 U CN 216842406U CN 202122801170 U CN202122801170 U CN 202122801170U CN 216842406 U CN216842406 U CN 216842406U
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Abstract
The utility model discloses a fan filter screen structure with a self-cleaning function, which comprises a cylinder type filter screen, a self-rotating device and a purging device, wherein the cylinder type filter screen is movably sleeved on an air inlet of a fan housing; the self-rotating device comprises a pneumatic wheel, an air inlet hole disc and an air inlet hole shielding piece, the pneumatic wheel and the cylinder type filter screen are coaxially arranged in the cylinder type filter screen, the air inlet hole disc is arranged on the outer end face of the cylinder type filter screen opposite to the pneumatic wheel, a plurality of air inlet holes are formed in the air inlet hole disc, and the air inlet hole shielding piece is rotatably arranged on the outer surface of the air inlet hole disc and used for adjusting the air inlet amount of the air inlet hole disc; the pneumatic wheel is connected with the cylinder type filter screen through the connecting rod and drives the cylinder type filter screen to rotate.
Description
Technical Field
The utility model relates to the technical field of fan filtering equipment, in particular to a fan filter screen structure with a self-cleaning function.
Background
The fan is the common equipment in industry place, because the often environment difference in industry place and comparatively complicated, raise dust or impurity in the surrounding environment often can enter into the fan in, consequently, the air inlet filter screen of fan has just become the indispensable subassembly of fan. But the filter screen of fan filter screen after operation a period will block up, differential pressure rise, and conventional filter screen often need clear up the filter screen with the fan shut down this moment. Especially, outdoor equipment is often blocked by sundries such as catkins in spring and autumn, and needs to be cleaned twice or three times a day in severe cases, so that the stable operation of the fan and the safety of a production system are greatly influenced. Various fans are more and very important in a power generation plant, and according to the operation experience of the previous power plant of the power generation plant, when the flying cotton in spring and autumn is serious, the filter screen needs to be cleaned for more than 3 times within 8 hours, and more than 9 times a day, so that the daily work maintenance amount is increased, and the hidden danger is brought to the safe operation of a unit. The fire detection fan and the dilution fan of the power plant are both centrifugal fans, and the filter screen of the dilution fan is a steel round filter screen with the diameter of about 0.4 meter on the housing. The filter screen with the size is easy to block in catkin seasons and extremely cold days, and foreign matters are attached to the filter screen and are difficult to clean in the running period of the fan, so that the fan needs to be stopped for cleaning.
Disclosure of Invention
The utility model aims to solve the technical problem of providing a fan filter screen structure with a self-cleaning function, which has a simple structure and can effectively ensure the air intake of a fan, aiming at the defects in the prior art.
The utility model aims to solve the technical scheme that the fan filter screen structure with the self-cleaning function comprises a cylinder type filter screen, a self-rotating device and a blowing device, wherein the cylinder type filter screen is movably sleeved on an air inlet of a fan housing, the self-rotating device is arranged on the cylinder type filter screen and is used for driving the cylinder type filter screen to rotate relative to the fan housing, the blowing device is axially arranged in the cylinder type filter screen close to the inner wall of the cylinder type filter screen, and the blowing device is used for blowing away a blockage adhered to the outer surface of the cylinder type filter screen; the self-rotating device comprises a pneumatic wheel, an air inlet hole disc and an air inlet hole shielding piece, the pneumatic wheel and the cylinder type filter screen are coaxially arranged in the cylinder type filter screen, the air inlet hole disc is arranged on the outer end face of the cylinder type filter screen opposite to the pneumatic wheel, a plurality of air inlet holes are formed in the air inlet hole disc, and the air inlet hole shielding piece is rotatably arranged on the outer surface of the air inlet hole disc and used for adjusting the air inlet amount of the air inlet hole disc; the pneumatic wheel is connected with the cylinder type filter screen through the connecting rod and drives the cylinder type filter screen to rotate.
Furthermore, the fan filter screen structure also comprises a control system for controlling the working state of the blowing device, the blowing device comprises a compressed air pipeline and blowing heads uniformly arranged on the compressed air pipeline, and the control system comprises an electromagnetic valve, a speed measuring probe and a control module; the solenoid valve sets up on compressed air pipeline, the speed probe is used for detecting the rotational speed of cylinder filter screen and turns into signal of telecommunication to control module with detecting data conversion, control module is used for the switching according to the data control solenoid valve that the speed probe provided.
Furthermore, a compressed air bypass valve connected with the electromagnetic valve in parallel is arranged on the compressed air pipeline, and a compressed air isolation valve is arranged on one side, close to the blowing head, of the compressed air pipeline.
Further, fan filter screen structure still includes the strutting arrangement who is used for supporting cylinder filter screen, strutting arrangement includes the support and sets up the roller bearing on this support, cylinder filter screen passes through the ball activity and sets up on the roller bearing and can rotate for the roller bearing.
Furthermore, the shape of the air inlet hole disk is circular, air inlet areas and non-air inlet areas which are arranged in a staggered mode are arranged on the air inlet hole disk, and the air inlet holes are formed in the air inlet areas of the air inlet hole disk.
Furthermore, the fresh air inlet shielding piece comprises a shielding piece body and an adjusting knob arranged on the shielding piece body, and the pneumatic wheel is movably connected with the inner end face of the barrel-type filter screen through a pneumatic wheel support shaft.
Furthermore, a support ring is arranged on the side wall of the cylinder type filter screen, and a circle of wear-resistant ribs connected with the balls in a contact mode are sleeved on the support ring.
The utility model has the beneficial technical effects that: the cylinder type filter screen is coaxially provided with the pneumatic wheel, when the differential pressure of the air inlet surface of the cylinder body of the filter screen is increased, the air inlet of the radial surface of the filter screen is naturally increased, the coaxially arranged pneumatic wheel overcomes the resistance to rotate due to the increase of the air inlet flow, the rotating speed is in direct proportion to the dirt degree of the filter screen on the axial cylinder surface, namely the height of the differential pressure of the filter screen, the cylinder body rotates faster when the differential pressure of the filter screen is higher, the times of rotating the blowing head in unit time are more, and the self-cleaning capability is stronger. In addition, can also adjust fan filter screen structure through control system and fresh air inlet shielding piece to greatly increased the suitability of this structure, its simple structure just can play the self-cleaning effect, the cost of the artifical clearance that has significantly reduced has improved fan efficiency.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the installation structure of the air inlet plate according to the present invention;
FIG. 3 is a schematic structural view of the purge apparatus according to the present invention;
fig. 4 is a schematic structural diagram of the supporting device of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood by those skilled in the art, the present invention is further described with reference to the accompanying drawings and examples.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "inside", "outside", "lateral", "vertical", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description of the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, and thus, should not be construed as limiting the present invention.
As shown in fig. 1-4, the fan filter screen structure with self-cleaning function according to the present invention includes a cylinder filter screen 1, a self-rotating device 2 and a purging device 3, where the cylinder filter screen 1 is a cylinder structure with an open end, the cylinder filter screen 1 is movably sleeved on an air inlet of a fan housing 4, a cylinder sealing element 41 extending into the cylinder filter screen 1 is disposed on the fan housing 4 to improve a sealing effect, so as to prevent air from entering the fan from a connecting gap, and the cylinder filter screen 1 is movably connected to the cylinder sealing element 41. The self-rotating device 2 is arranged on the cylinder type filter screen 1 and used for driving the cylinder type filter screen 1 to rotate relative to the fan housing 4, the purging device 3 is axially arranged in the cylinder type filter screen 1 close to the inner wall of the cylinder type filter screen 1, and the purging device 3 is used for purging blockages adhered to the outer surface of the cylinder type filter screen 1; when autogyration device 2 drives cylinder filter screen 1 and rotates, sweep device 3 and can sweep the different positions of cylinder filter screen 1 to the jam clean up of surface adhesion.
The self-rotating device 2 comprises a pneumatic wheel 21, an air inlet hole disc 22 and an air inlet hole shielding sheet 23, the pneumatic wheel 21 and the cylinder type filter screen 1 are coaxially arranged in the cylinder type filter screen 1, and the pneumatic wheel 21 is movably connected with the inner end face of the cylinder type filter screen 1 through a pneumatic wheel supporting shaft 24. The air inlet hole disc 22 is arranged on the outer end face of the cylinder type filter screen 1 opposite to the air driving wheel 21, a plurality of air inlet holes 25 are formed in the air inlet hole disc 22, and the air inlet hole shielding piece 23 is rotatably arranged on the outer surface of the air inlet hole disc 22 and used for adjusting the air inlet amount of the air inlet hole disc 22; the pneumatic wheel 21 is connected with the cylinder type filter screen 1 through a connecting rod 26 and drives the cylinder type filter screen 1 to rotate. When the differential pressure of the air inlet surface of the cylinder type filter screen 1 rises, the air inlet of the radial surface of the cylinder type filter screen naturally increases, the coaxially arranged pneumatic wheel 21 overcomes the resistance to rotate due to the increase of the air inlet flow, the rotating speed is in direct proportion to the dirt degree of the filter screen on the axial cylinder surface, namely the height of the differential pressure of the filter screen, the cylinder rotates faster when the differential pressure of the filter screen is higher, the times of rotating the blowing head in unit time are more, and the self-cleaning capability is stronger. The air flow generated by the pressure difference between the inside and the outside of the cylinder type filter screen 1 drives the wind wheel 21 to rotate, so that the cylinder type filter screen 1 is further driven to rotate to finish the cleaning work, extra power input is not needed, and the whole structure is more energy-saving.
Referring to fig. 1-3, the blower filter screen structure further includes a control system for controlling the working state of the purging device 3, the purging device includes a compressed air pipeline 31 and purging heads 32 uniformly arranged on the compressed air pipeline 31, compressed air is introduced into the compressed air pipeline 31 to purge the cartridge filter screen 1, and as the pressure of the compressed air is higher than 0.6MPa, impurities on the surface layer of the filter screen can be blown off, so that a self-cleaning effect is achieved. The control system comprises an electromagnetic valve 33, a speed measuring probe 34 and a control module; the electromagnetic valve 33 is arranged on the compressed air pipeline 31, the opening and closing of the electromagnetic valve 33 is controlled by the rotating speed of the cylinder type filter screen 1, the electromagnetic valve is opened when the rotating speed reaches a set value, otherwise, the electromagnetic valve is closed, the setting of the rotating speed control is set according to actual field setting, for example, the electromagnetic valve is opened when the rotating speed of the cylinder type filter screen 1 reaches 10r/min and the electromagnetic valve is closed when the rotating speed is less than 8r/min, so that the using amount of compressed air is saved, the speed measuring probe 34 is used for detecting the rotating speed of the cylinder type filter screen 1 and converting the detection data into an electric signal to be transmitted to the control module, and the control module is used for controlling the opening and closing of the electromagnetic valve 33 according to the data provided by the speed measuring probe 34. In addition, the test data of the speed measuring probe 34 and the signal of the electromagnetic valve 33 can be remotely transmitted for remote monitoring. The compressed air line 31 is provided with a compressed air bypass valve 35 connected with the electromagnetic valve 33 in parallel, one side of the compressed air line 31 close to the blowing head 32 is provided with a compressed air isolation valve 36, and the compressed air bypass valve and the compressed air isolation valve are used for isolation and manual adjustment.
Referring to fig. 1-2, the shape of the vent plate 22 is circular, the vent plate 22 is provided with air inlet regions and non-air inlet regions which are arranged in a staggered manner, and the air inlet holes 25 are formed in the air inlet regions of the vent plate 22. The shape in air inlet district and non-air inlet district all is fan-shaped in this embodiment, air inlet shielding piece 23 includes the separation blade body and sets up adjust knob 27 on this separation blade body, and through the position of adjustment separation blade body, the air inlet district to air inlet hole dish 22 forms the shielding region of different areas when using to the intake of adjustment, and then the rotational speed of adjustment driving wheel 21.
Referring to fig. 4, the fan screen structure further includes a support device 5 for supporting the drum screen 1, the support device includes a bracket 51 and a roller 52 disposed on the bracket 51, and the drum screen 1 is movably disposed on the roller 52 by a ball and can rotate relative to the roller 52. The side wall of the cylinder type filter screen 1 is provided with a support ring 11, and a circle of wear-resistant ribs 12 connected with the balls in a contact mode are sleeved on the support ring 11. The driving power of the cylinder type filter screen is provided by the pneumatic wheel, the front and back differential pressure of the pneumatic wheel is limited by the inlet pressure of the fan and is safely limited, the rotating speed of the filter cylinder is controlled within 50r/m, the actual test is taken as the standard, a bottom ball bearing supporting mode can be adopted when necessary, the friction is reduced, and two modes of oil bath and grease lubrication can also be adopted. Grease lubrication is economical and simple, and long-period operation is guaranteed for reducing filter cartridge abrasion.
The cylinder type filter screen is coaxially provided with the pneumatic wheel, when the differential pressure of the air inlet surface of the cylinder body of the filter screen is increased, the air inlet of the radial surface of the filter screen is naturally increased, the coaxially arranged pneumatic wheel overcomes the resistance to rotate due to the increase of the air inlet flow, the rotating speed is in direct proportion to the dirt degree of the filter screen on the axial cylinder surface, namely the height of the differential pressure of the filter screen, the cylinder body rotates faster when the differential pressure of the filter screen is higher, the times of rotating the blowing head in unit time are more, and the self-cleaning capability is stronger. In addition, can also adjust fan filter screen structure through control system and fresh air inlet shielding piece to greatly increased the suitability of this structure, its simple structure just can play the self-cleaning effect, the cost of the artifical clearance that has significantly reduced has improved fan efficiency.
The specific embodiments described herein are merely illustrative of the principles and utilities of the present invention and are not intended to limit the utility model. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (7)
1. Fan filter screen structure with from clearance function, its characterized in that: the automatic blowing device is arranged in the cylindrical filter screen in the axial direction close to the inner wall of the cylindrical filter screen and is used for blowing away blockages adhered to the outer surface of the cylindrical filter screen; the self-rotating device comprises a pneumatic wheel, an air inlet hole disc and an air inlet hole shielding piece, the pneumatic wheel and the cylinder type filter screen are coaxially arranged in the cylinder type filter screen, the air inlet hole disc is arranged on the outer end face of the cylinder type filter screen opposite to the pneumatic wheel, a plurality of air inlet holes are formed in the air inlet hole disc, and the air inlet hole shielding piece is rotatably arranged on the outer surface of the air inlet hole disc and used for adjusting the air inlet amount of the air inlet hole disc; the pneumatic wheel is connected with the cylinder type filter screen through the connecting rod and drives the cylinder type filter screen to rotate.
2. The fan filter screen structure with self-cleaning function of claim 1, wherein: the blowing device comprises a compressed air pipeline and blowing heads uniformly arranged on the compressed air pipeline, and the control system comprises an electromagnetic valve, a speed measuring probe and a control module; the solenoid valve sets up on compressed air pipeline, the speed probe is used for detecting the rotational speed of cylinder filter screen and turns into signal of telecommunication to control module with detecting data conversion, control module is used for the switching according to the data control solenoid valve that the speed probe provided.
3. The fan filter screen structure with self-cleaning function of claim 2, wherein: and a compressed air bypass valve connected with the electromagnetic valve in parallel is arranged on the compressed air pipeline, and a compressed air isolating valve is arranged on one side of the compressed air pipeline close to the sweeping head.
4. The fan filter screen structure with self-cleaning function according to any one of claims 1 to 3, wherein: the cylinder type filter screen support device comprises a support and a rolling shaft arranged on the support, and the cylinder type filter screen is movably arranged on the rolling shaft through a ball and can rotate relative to the rolling shaft.
5. The fan filter screen structure with self-cleaning function of claim 4, wherein: the shape of the air inlet hole disk is circular, air inlet areas and non-air inlet areas which are arranged in a staggered mode are arranged on the air inlet hole disk, and the air inlet holes are formed in the air inlet areas of the air inlet hole disk.
6. The fan filter screen structure with self-cleaning function of claim 5, wherein: the air inlet shielding piece comprises a shielding piece body and an adjusting knob arranged on the shielding piece body, and the pneumatic wheel is movably connected with the inner end face of the barrel-type filter screen through a pneumatic wheel supporting shaft.
7. The fan filter screen structure with self-cleaning function of claim 5, wherein: the side wall of the cylinder type filter screen is provided with a support ring, and a circle of wear-resistant ribs connected with the ball in a contact mode are sleeved on the support ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122801170.8U CN216842406U (en) | 2021-11-16 | 2021-11-16 | Fan filter screen structure with self-cleaning function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122801170.8U CN216842406U (en) | 2021-11-16 | 2021-11-16 | Fan filter screen structure with self-cleaning function |
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| Publication Number | Publication Date |
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| CN216842406U true CN216842406U (en) | 2022-06-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122801170.8U Active CN216842406U (en) | 2021-11-16 | 2021-11-16 | Fan filter screen structure with self-cleaning function |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117090812A (en) * | 2023-10-20 | 2023-11-21 | 江苏新世界泵业有限公司 | Axial flow pump with filter assembly |
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2021
- 2021-11-16 CN CN202122801170.8U patent/CN216842406U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117090812A (en) * | 2023-10-20 | 2023-11-21 | 江苏新世界泵业有限公司 | Axial flow pump with filter assembly |
| CN117090812B (en) * | 2023-10-20 | 2024-02-06 | 江苏新世界泵业有限公司 | Axial flow pump with filter assembly |
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