An energy-saving centrifugal fan with impurity filtering function

Abstract

The present invention relates to the field of centrifugal fans, and discloses an energy-saving centrifugal fan with an impurity filtering function, comprising a casing, wherein the casing is arranged in a volute shape, and a filter element assembly is arranged on one side of the casing, and the filter element assembly is used to place and replace the filter screen, and the filter element assembly is located outside the air inlet of the casing, and an impeller assembly is arranged on one side of the filter element assembly inside the casing, and the impeller assembly is used to provide wind force and change the air volume, and the casing presses and fixes related components in the filter element assembly through components at the air inlet and the casing itself. The energy-saving centrifugal fan with an impurity filtering function provided by the present invention has a filter element assembly, which can easily replace the filter screen that meets different requirements. On the one hand, it can prevent the fan from bringing impurities from the previous environment into the new environment; on the other hand, it can extend the service life of the filter screen, ensure that the filtering effect meets the standard, and prevent unnecessary damage or overload to the filter screen.

Description

Technical Field

[0001] The present invention relates to the technical field of centrifugal fans, in particular to an energy-saving centrifugal fan with an impurity filtering function. Background Art

[0002] In the patent application with application announcement number CN222025986U, it includes a base, a fan is fixedly installed on the top of the base; a limit assembly, the limit assembly is arranged inside the fan, the limit assembly includes a limit groove, and the limit block is slidably connected inside the limit groove; a fixing groove, the fixing groove is arranged inside the fan, a fixing pin is slidably connected inside the fixing groove, one end of the fixing pin is provided and located inside the fixing groove. A fixing ring is fixedly connected to one side of the fixing pin, and a fixing hole adapted for the fixing pin is opened inside the limit block; a filter screen, the filter screen is arranged inside the fan, and the advantage is that after the fixing ring is pressed to one side to separate the four fixing pins from the four fixing holes, the filter screen is rotated to one side to drive the limit assembly to rotate to one side to a suitable position, and the filter screen is pulled to one side to drive the limit assembly to separate, and the filter screen is removed, thereby conveniently and quickly removing the filter screen for cleaning or replacement.

[0003] In the prior art including the above-mentioned patents, improvements in impurity filtration and dust prevention effects are mostly made to fixed fans, and fixed centrifugal fans are mostly used in factory exhaust and air conditioning and other factory buildings or large equipment, while mobile centrifugal fans have a variable operating environment, and the maintenance frequency and maintenance quality are lower than those of fixed fans to varying degrees. Therefore, the components in the mobile fan will not only cause the impeller to wear faster due to different working environments, making it inconvenient to reduce the maintenance frequency, but also bring impurities from other working environments into the current working environment when the air is discharged, making it inconvenient to reduce the impact of the fan on the working environment. Summary of the Invention

[0004] The problem to be solved by the present invention is that the existing small-sized mobile centrifugal fans are not easy to adapt to different working environments.

[0005] In order to solve the above technical problems, the technical solution of the present invention is: an energy-saving centrifugal fan with impurity filtering function, comprising a casing, the casing being volute-shaped, a filter element assembly being arranged on one side of the casing, the filter element assembly being used for placing and replacing the filter screen, the filter element assembly being located on the outside of the air inlet of the casing, the interior of the casing being provided with an impeller assembly on one side of the filter element assembly, the impeller assembly being used for providing wind force and changing air volume, the casing pressing and fixing the relevant components in the filter element assembly through the components at the air inlet and the casing itself, the impeller assembly comprising a mounting plate, the mounting plate being rotatably connected to the casing, a blade being rotatably arranged on one side of the mounting plate close to the inside of the casing, a mounting ring being rotatably arranged on the other side of the blade, the mounting ring being rotatably connected to the blade, the blade having a total of four connecting posts, only two of which are rotatably connected to the mounting ring and the mounting plate, and the other two connecting posts of the blade are rotatably connected to the mounting ring and the mounting plate The mounting plate is slidably connected, and a guide plate is rotatably provided on one side of the mounting plate close to the side of the blade, and a guide groove is provided on the outer side of the guide plate, and the guide groove is located on the outer side of the connecting column of the blade, and a block is slidably provided in the middle of the guide plate, and the block and the guide plate are connected by vertical knurling, and a spring three is fixedly provided in the middle inside of the block, and a total of four springs are provided, and the spring three is used to pull the lock pin inward, and the outer end of the spring three is fixedly provided with a lock pin, and the lock pin is slidably connected to the guide plate, and a sleeve is fixedly provided in the middle of the mounting plate, and the sleeve passes through the block, and the block is slidably connected to the sleeve, and a slot is provided on the inside of the sleeve at the outer side of the lock pin, and the slot is slidably connected to the lock pin, and a pull rod is slidably provided in the middle of the sleeve, and one end of the pull rod is fixedly connected to the block, and spring four is provided around the pull rod, and the two ends of the spring four are fixedly connected to the block and the sleeve respectively.

[0006] Preferably, the filter element assembly includes a mounting plate, which is composed of two semicircular plates. The mounting plates are connected by screws, and mounting blocks are fixedly provided on the outer surface of the mounting plate. The mounting blocks are evenly distributed in four groups around the center of the mounting plate, with two mounting blocks in each group, and the mounting blocks are arranged in a triangular shape.

[0007] Preferably, elastic components are fixedly provided inside both sides of the mounting block, and a mounting box is fixedly provided on the opposite side of the elastic component. The mounting box is divided into two layers, the lower layer of the mounting box is fixedly connected to the elastic component, and the upper and lower layers of the mounting box are connected by hinges. A magnet is fixedly provided at one end of the interior of the mounting box away from the hinge, and the magnet is used to prevent the mounting box from being accidentally opened.

[0008] Preferably, a filter is provided in the middle of the interior of the installation box, and a limit block is slidably provided on the inner side of the installation plate on the outer side of the air inlet component of the outer shell, and the limit block is located on the lower side of the air inlet component of the outer shell, and the side of the limit block away from the installation plate is located inside the air inlet component of the outer shell, and a spring is fixedly provided on one end of the limit block located inside the air inlet component of the outer shell, and the spring is fixedly connected to the air inlet component of the outer shell, and the spring is used to pull the limit block toward the installation plate.

[0009] Preferably, a fixing ring is provided on the outside of the limit block around the air inlet component of the shell, and the fixing ring is pressed against the surface of the shell by the air inlet component of the shell. A socket is provided inside the fixing ring, and an annular groove is provided inside the fixing ring. The cross-section of the annular groove of the fixing ring is T-shaped.

[0010] Preferably, a swivel is rotatably provided on the outer side of the fixed ring, a second spring is fixedly provided on the inner side of the swivel (located on the outer side of the fixed ring socket), a movable pin is fixedly provided on the other end of the second spring, and the movable pin is slidably connected with the swivel and the fixed ring. After the mounting plate is installed, it can be tightly clamped to the outer side of the swivel.

[0011] Compared with the prior art, the technical solution of the present invention has the following advantages:

[0012] (1) By setting up the filter element assembly, the fan can easily replace the filter that meets different requirements when changing the use scene. This design has multiple advantages: on the one hand, it can prevent the fan from bringing impurities from the previous environment into the new environment during operation; on the other hand, replacing the filter according to different environments can not only extend the service life of each filter, ensure that the filtering effect meets the standard, but also prevent unnecessary damage or overload to the filter. In this way, not only the filtering capacity of the device is improved, but also its adaptability is enhanced, avoiding pollution to the new working environment due to problems of the device itself, or adverse effects on other items in the environment, and ultimately achieving the purpose of reducing use costs and reducing maintenance frequency. In addition, the filter element assembly can be rotated at will. During operation, workers can operate according to the conditions of the working environment and their own habits, thereby increasing the convenience of use to a certain extent. Moreover, rotating the filter element to the bottom when replacing it can also reduce the probability of impurities floating into the fan.

[0013] (2) By setting up the impeller assembly, the angle of the impeller blades can be flexibly changed. With this feature, the impeller can generate different wind forces at the same speed. When the wind force needs to be increased, by adjusting the blade angle, the power consumption can be reduced, and the environmental performance of the fan can be effectively improved. Moreover, the operation of changing the blade angle is extremely simple and can be completed in only two steps. There is no need to tighten the screws throughout the process, which simplifies the operation process and shortens the debugging time. The blade angle can be adjusted at will. Compared with other adjustment methods, while ensuring efficiency, the blade angle can be further increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0015] Figure 2 This is a partial cross-sectional structural diagram of the filter assembly of the present invention;

[0016] Figure 3 This is a schematic diagram of the installation structure of the filter assembly of the present invention;

[0017] Figure 4 For the present invention Figure 3 A in the middle is an enlarged structural diagram;

[0018] Figure 5 This is a schematic diagram of the internal structure of the housing of the present invention;

[0019] Figure 6 Schematic diagram of the internal structure of the impeller of the present invention;

[0020] Figure 7 This is a schematic diagram of the cross-sectional structure of the sleeve of the present invention;

[0021] Figure 8 For the present invention Figure 7 A in the middle is an enlarged structural diagram;

[0022] Figure 9 Schematic diagram of the internal structure of the housing of the present invention (rear view);

[0023] Figure 10 It is a schematic structural diagram of the filter assembly of the present invention.

[0024] In the figure: 1. Housing; 2. Filter element assembly; 201. Mounting plate; 202. Mounting block; 203. Elastic assembly; 204. Mounting box; 205. Magnet; 206. Filter screen; 207. Limit block; 208. Spring 1; 209. Rotating ring; 210. Spring 2; 211. Movable pin; 212. Fixed ring; 3. Impeller assembly; 301. Mounting plate; 302. Blades; 303. Mounting ring; 304. Guide plate; 3041. Guide groove; 305. Block; 306. Spring 3; 307. Lock pin; 308. Sleeve; 309. Slot; 310. Pull rod; 311. Spring 4. DETAILED DESCRIPTION

[0025] To make the purpose, technical solutions and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0026] Unless otherwise defined, the technical or scientific terms used in this disclosure shall have the usual meanings understood by persons of ordinary skill in the field to which this disclosure belongs. The words “including” or “comprising” and the like used in this disclosure mean that the elements or objects preceding the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. The words “connected” or “connected” and the like are not limited to physical or mechanical connections, but may also include electrical connections, whether direct or indirect. “Up”, “down”, “left”, “right” and the like are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0027] like Figures 1 to 10As shown, the present invention provides an energy-saving centrifugal fan with impurity filtering function, including a housing 1, the housing 1 is in a volute shape, a filter element assembly 2 is provided on one side of the housing 1, the filter element assembly 2 is used to place and replace the filter screen 206, the filter element assembly 2 is located outside the air inlet of the housing 1, and an impeller assembly 3 is provided on one side of the filter element assembly 2 inside the housing 1. The impeller assembly 3 is used to provide wind force and change the air volume. The housing 1 presses and fixes the relevant components in the filter element assembly 2 through the components at the air inlet and the housing 1 itself. The impeller assembly 3 includes an installation The disk 301 is rotatably connected to the housing 1. The mounting disk 301 is rotatably provided with a blade 302 on one side close to the inside of the housing 1. The other side of the blade 302 is provided with a mounting ring 303. The mounting ring 303 is rotatably connected to the blade 302. The blade 302 has four connecting posts. Only two connecting posts of the blade 302 are rotatably connected to the mounting ring 303 and the mounting disk 301. The other two connecting posts of the blade 302 are slidably connected to the mounting ring 303 and the mounting disk 301. One side of the mounting disk 301 is rotatably provided close to the side of the blade 302. There is a guide plate 304, a guide groove 3041 is opened on the outside of the guide plate 304, the guide groove 3041 is located on the outside of the connecting column of the blade 302, a block 305 is slidably provided in the middle of the guide plate 304, the block 305 is connected to the guide plate 304 by a vertical knurling, a spring 306 is fixedly provided in the middle of the block 305, and there are four springs 306. The spring 306 is used to pull the lock pin 307 inward. The outer end of the spring 306 is fixedly provided with a lock pin 307, and the lock pin 307 slides with the guide plate 304. Dynamic connection, a sleeve 308 is fixedly provided in the middle of the mounting plate 301, the sleeve 308 passes through the block 305, the block 305 is slidably connected to the sleeve 308, a slot 309 is provided inside the sleeve 308 on the outside of the locking pin 307, the slot 309 is slidably connected to the locking pin 307, a pull rod 310 is slidably provided in the middle of the sleeve 308, one end of the pull rod 310 is fixedly connected to the block 305, and a spring four 311 is provided around the pull rod 310, and the two ends of the spring four 311 are respectively fixedly connected to the block 305 and the sleeve 308.

[0028] The filter element assembly 2 includes a mounting plate 201, which is composed of two semicircular plates. The mounting plates 201 are connected by screws. A mounting block 202 is fixedly provided on the outer surface of the mounting plate 201. The mounting blocks 202 are evenly distributed in four groups around the center of the mounting plate 201, with two mounting blocks 202 in each group. The mounting blocks 202 are arranged in a triangle.

[0029] Elastic components 203 are fixedly provided inside both sides of the mounting block 202, and a mounting box 204 is fixedly provided on the side opposite to the elastic component 203. The mounting box 204 is divided into two layers, the lower layer of the mounting box 204 is fixedly connected to the elastic component 203, and the upper and lower layers of the mounting box 204 are connected by hinges. A magnet 205 is fixedly provided at the end of the mounting box 204 away from the hinge, and the magnet 205 is used to prevent the mounting box 204 from opening accidentally.

[0030] A filter screen 206 is provided in the middle of the interior of the installation box 204, and a limit block 207 is slidingly provided on the inner side of the installation plate 201 on the outer side of the air inlet component of the outer shell 1. The limit block 207 is located on the lower side of the air inlet component of the outer shell 1, and the side of the limit block 207 away from the installation plate 201 is located inside the air inlet component of the outer shell 1. A spring 208 is fixedly provided on one end of the limit block 207 located inside the air inlet component of the outer shell 1. The spring 208 is fixedly connected to the air inlet component of the outer shell 1, and the spring 208 is used to pull the limit block 207 toward the installation plate 201.

[0031] A fixing ring 212 is provided on the outside of the limit block 207 around the air inlet component of the shell 1. The fixing ring 212 is pressed against the surface of the shell 1 by the air inlet component of the shell 1. A socket is provided inside the fixing ring 212, and an annular groove is provided inside the fixing ring 212. The cross section of the annular groove of the fixing ring 212 is T-shaped.

[0032] A swivel 209 is rotatably provided on the outer side of the fixed ring 212, and a spring 210 is fixedly provided inside the swivel 209 on the outer side of the insertion hole of the fixed ring 212. A movable pin 211 is fixedly provided on the other end of the spring 210. The movable pin 211 is slidably connected to the swivel 209 and the fixed ring 212. After installation, the mounting plate 201 can be tightly clamped to the outer side of the swivel 209.

[0033] The working principle and use process of the present invention: When the fan is used, a filter 206 with suitable filtering capacity can be selected according to the on-site environment. When selecting, rotate the mounting plate 201 until the appropriate filter 206 is located above the air inlet and stop, then pull the filter 206 toward the air inlet until the limit block 207 is stuck in the round hole in the mounting box 204, and then it can be used. When replacing the filter 206, push the filter 206 upward to reset it and repeat the above steps.

[0034] When the filter 206 reaches the end of its service life, rotate the mounting plate 201 until the filter 206 is in a suitable position (it is recommended to move it to the side or bottom), open the mounting box 204 to let the filter 206 fall out, install a new filter 206, and cover the mounting box 204 to complete the replacement.

[0035] When the mounting plate 201 is rotated, the movable pin 211 will first move out of the jack range and then be inserted again when encountering the next jack. Since the movable pin 211 is located at the center of the mounting box 204, the auxiliary mounting box 204 can be stopped at a suitable position when the mounting plate 201 is rotated.

[0036] Before use, the spacing between blades 302 can be adjusted according to specific circumstances. When adjusting, pull the pull rod 310 to pull the block 305 outward. At this time, the guide plate 304 can be rotated at will. The rotation of the guide plate 304 changes the position of the guide groove 3041, and the angle of the blade 302 changes accordingly. Then release the pull rod 310, and the block 305 is reset and fixed to the guide plate 304 through the knurling. After the impeller starts to rotate, the locking pin 307 is thrown outward under the action of centrifugal force and inserted into the slot 309 to prevent the block 305 from accidentally slipping off when the impeller rotates. After the impeller stops rotating, the spring three 306 pulls the locking pin 307 back inward.

[0037] The above embodiments are merely exemplary embodiments of the present invention and are not intended to limit the scope of the present invention. The scope of protection of the present invention is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present invention within the spirit and scope of protection of the present invention, and such modifications or equivalent substitutions shall also be deemed to fall within the scope of protection of the present invention.

Claims

1. An energy-saving centrifugal fan with an impurity filtering function, comprising a housing (1), characterized in that: The housing (1) is volute-shaped, a filter element assembly (2) is provided on one side of the housing (1), the filter element assembly (2) is used to place and replace the filter screen (206), the filter element assembly (2) is located outside the air inlet of the housing (1), an impeller assembly (3) is provided inside the housing (1) on one side of the filter element assembly (2), the impeller assembly (3) is used to provide wind force and change the air volume, the housing (1) presses and fixes the relevant components in the filter element assembly (2) through the components at the air inlet and the housing (1) itself, the impeller assembly (3) includes a mounting plate (301), the mounting plate (301) is rotatably connected to the housing (1), and the mounting plate (301) is connected to the housing (1). A blade (302) is rotatably provided on one side of the disk (301) close to the inner side of the housing (1), and a mounting ring (303) is provided on the other side of the blade (302). The mounting ring (303) is rotatably connected to the blade (302). The blade (302) has four connecting posts in total, and only two connecting posts of the blade (302) are rotatably connected to the mounting ring (303) and the mounting disk (301). The other two connecting posts of the blade (302) are slidably connected to the mounting ring (303) and the mounting disk (301). A guide disk (304) is rotatably provided on one side of the mounting disk (301) close to the side of the blade (302). The outer side of the guide disk (304) A guide groove (3041) is provided, the guide groove (3041) is located outside the connecting column of the blade (302), a block (305) is slidably provided in the middle of the guide plate (304), the block (305) and the guide plate (304) are connected by a vertical knurling, a spring three (306) is fixedly provided in the middle of the block (305), and a total of four springs (306) are provided, the spring three (306) is used to pull the lock pin (307) inward, the outer end of the spring three (306) is fixedly provided with a lock pin (307), the lock pin (307) is slidably connected to the guide plate (304), and the mounting plate (301 ) is fixedly provided with a sleeve (308) in the middle part, the sleeve (308) passes through the block (305), the block (305) is slidably connected to the sleeve (308), the interior of the sleeve (308) is provided with a slot (309) located on the outside of the locking pin (307), the slot (309) is slidably connected to the locking pin (307), a pull rod (310) is slidably provided in the middle of the sleeve (308), one end of the pull rod (310) is fixedly connected to the block (305), a spring four (311) is provided around the pull rod (310), and the two ends of the spring four (311) are fixedly connected to the block (305) and the sleeve (308) respectively.

2. The energy-saving centrifugal fan with impurity filtering function according to claim 1, characterized in that: The filter element assembly (2) comprises a mounting plate (201), wherein the mounting plate (201) is composed of two semicircular plates, the mounting plates (201) being connected by screws, and mounting blocks (202) being fixedly provided on the outer surface of the mounting plate (201), wherein the mounting blocks (202) are evenly distributed in four groups around the center of the mounting plate (201), with each group of two mounting blocks (202), and the mounting blocks (202) being arranged in a triangular shape.

3. The energy-saving centrifugal fan with impurity filtering function according to claim 2, characterized in that: Elastic components (203) are fixedly provided inside both sides of the installation block (202), and an installation box (204) is fixedly provided on a side opposite to the elastic component (203). The installation box (204) is divided into an upper and lower layer, the lower layer of the installation box (204) is fixedly connected to the elastic component (203), and the upper and lower layers of the installation box (204) are connected by a hinge. A magnet (205) is fixedly provided at one end of the interior of the installation box (204) away from the hinge, and the magnet (205) is used to prevent the installation box (204) from being accidentally opened.

4. The energy-saving centrifugal fan with impurity filtering function according to claim 3, characterized in that: A filter screen (206) is provided in the middle of the interior of the installation box (204); a limit block (207) is provided on the inner side of the installation plate (201) and is slidably provided on the outer side of the air inlet component of the housing (1); the limit block (207) is located on the lower side of the air inlet component of the housing (1); the side of the limit block (207) away from the installation plate (201) is located inside the air inlet component of the housing (1); a spring (208) is fixedly provided at one end of the limit block (207) located inside the air inlet component of the housing (1); the spring (208) is fixedly connected to the air inlet component of the housing (1); and the spring (208) is used to pull the limit block (207) toward the installation plate (201).

5. The energy-saving centrifugal fan with impurity filtering function according to claim 4, characterized in that: A fixing ring (212) is provided on the outside of the limit block (207) and around the air inlet component of the housing (1). The fixing ring (212) is pressed against the surface of the housing (1) by the air inlet component of the housing (1). A socket is provided inside the fixing ring (212). An annular groove is provided inside the fixing ring (212). The cross section of the annular groove of the fixing ring (212) is T-shaped.

6. The energy-saving centrifugal fan with impurity filtering function according to claim 5, characterized in that: A rotating ring (209) is rotatably provided on the outer side of the fixed ring (212), and a second spring (210) is fixedly provided inside the rotating ring (209) on the outer side of the insertion hole of the fixed ring (212). A movable pin (211) is fixedly provided on the other end of the second spring (210), and the movable pin (211) is slidably connected to the rotating ring (209) and the fixed ring (212). After the mounting plate (201) is mounted, it can be tightly clamped to the outer side of the rotating ring (209).

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