A mixed flow fan

Abstract

The utility model belongs to the technical field of mixed flow fan, concretely relates to a mixed flow fan, including fan pipe, the outer wall fixedly connected with support leg of fan pipe, the inner wall fixedly connected with fan support board of fan pipe, the side fixedly connected with mixed flow motor of fan support board, the output shaft fixedly connected with fan shaft of mixed flow motor, the outer wall fixedly connected with mixed flow fan of fan shaft, the inner wall of fan pipe is provided with anti -blocking device, the anti -blocking device includes sieve screen, the outer wall fixedly connected on the inner wall of fan pipe of sieve screen, the side fixedly connected with slow -running motor of sieve screen. The utility model solves the problem that the existing mixed flow fan appears local blockage in the airflow in the body, causes the flow rate to drop when running, thereby guaranteeing the efficient operation of the fan.

Description

Technical Field

[0001] This utility model belongs to the field of mixed-flow fan technology, and specifically relates to a mixed-flow fan. Background Technology

[0002] Mixed-flow fans are typically used in applications requiring a certain air volume and moderate pressure, such as ventilation systems, air conditioning equipment, and industrial exhaust systems. They work by drawing air into the fan through the rotation of an impeller, and then using rotation and thrust to create pressure in the airflow, thus forcing the air into the duct system. The design of mixed-flow fans allows them to accommodate both high flow rates and moderate to high pressure boosts, combining the advantages of both axial and centrifugal fans.

[0003] Patent publication number CN222010523U discloses a mixed-flow fan, including a housing with a rotating assembly inside. A hollow disk is mounted on the rotating assembly, and a through groove is formed in the hollow disk. Fan blades are disposed within the through groove, and an adjusting assembly is also located inside the hollow disk. The adjusting assembly is connected to the fan blades. The adjusting assembly includes a hollow cylinder rotatably mounted on the hollow disk. A first rotating disc with meshing teeth is located at the bottom of the hollow cylinder. A threaded rod is rotatably mounted on the inner wall of the hollow disk. A gear meshing with the meshing teeth is installed at one end of the threaded rod, and a threaded sleeve is fitted onto the threaded rod. The bottom of the threaded sleeve is slidably connected to the inner wall of the hollow disk, and an L-shaped connecting rod is installed at the top of the threaded sleeve. This patent increases the extension length of the fan blades, thus increasing the windward area of ​​the blades. This increased windward area allows for more effective capture and propulsion of air, thereby increasing airflow speed and improving ventilation.

[0004] However, existing mixed-flow fans have the following problems: when the existing mixed-flow fans are running, the presence of dust and dirt in the airflow causes local blockage of the airflow inside the machine, resulting in a decrease in flow velocity. Therefore, we have proposed a mixed-flow fan. Utility Model Content

[0005] The purpose of this invention is to provide a mixed-flow fan that can solve the problem in existing mixed-flow fans where dust and dirt in the airflow cause local blockages in the airflow during operation, resulting in a decrease in flow velocity.

[0006] The specific technical solution adopted by this utility model is as follows:

[0007] A mixed-flow fan includes a fan duct, a support leg fixedly connected to the outer wall of the fan duct, a fan support plate fixedly connected to the inner wall of the fan duct, a mixed-flow motor fixedly connected to the side of the fan support plate, a fan shaft fixedly connected to the output shaft of the mixed-flow motor, a mixed-flow fan fixedly connected to the outer wall of the fan shaft, an anti-clogging device provided on the inner wall of the fan duct, the anti-clogging device including a sieve filter screen, the outer wall of the sieve filter screen fixedly connected to the inner wall of the fan duct, a slow-rotating motor fixedly connected to the side of the sieve filter screen, a rotating shaft fixedly connected to the output shaft of the slow-rotating motor, an anti-clogging scraper fixedly connected to the outer wall of the rotating shaft, and a vibration damping component provided on the side of the rotating shaft away from the slow-rotating motor.

[0008] The vibration damping assembly includes an elastic telescopic rod. The fixed end of the elastic telescopic rod is fixedly connected to the side of the rotating shaft away from the slow-rotating motor. The telescopic end of the elastic telescopic rod is fixedly connected to a horizontal handle. A pressure-bearing arc block is fixedly connected to the side of the horizontal handle near the rotating shaft. A vibration hammer is fixedly connected to the side of the fan support plate. A shaped bracket is fixedly connected to the inner wall of the shaped bracket. A pressure-applying arc block is fixedly connected to the side of the vertical ring near the fan support plate.

[0009] The side of the pressure-bearing arc block closest to the fan support plate is an arc surface, and the side of the pressure-applying arc block closest to the rotating shaft is also an arc surface.

[0010] The arc surface of the pressure-applying arc block is located on the movement trajectory of the arc surface of the pressure-receiving arc block, and the side of the anti-blocking scraper near the rotating shaft is in contact with the side of the sieve filter screen near the fan support plate.

[0011] A collection device is provided on the side of the anti-clogging scraper away from the screen. The collection device includes an inner wall scraper. The side of the inner wall scraper is fixedly connected to the side of the anti-clogging scraper away from the screen. A through groove is opened on the inner wall of the blower pipe. A feed grid is fixedly connected to the inner wall of the through groove. A collection frame is fixedly connected to the outer wall of the blower pipe.

[0012] The outer wall of the inner scraper is in contact with the inner wall of the fan pipe, and the outer wall of the feed grid is located on the movement trajectory of the inner scraper.

[0013] The technical effects achieved by this utility model are as follows:

[0014] This invention, through the setting of an anti-clogging device, enables the sieve filter, slow-rotating motor, rotating shaft, anti-clogging scraper, elastic telescopic rod, horizontal handle, pressure arc block, vibrating hammer, irregular bracket, vertical ring, and pressure arc block to cooperate. Under the elastic force of the elastic telescopic rod, the horizontal handle moves towards the rotating shaft. The movement of the horizontal handle towards the rotating shaft drives the vibrating hammer to move towards the rotating shaft, causing the vibrating hammer to repeatedly vibrate the anti-clogging scraper. This causes the dust and attached substances on the anti-clogging scraper to be shaken off, preventing the presence of dust and dirt in the airflow, which could lead to local blockage of the airflow inside the machine and a decrease in flow rate.

[0015] This utility model, through the setting of the collection device, enables the inner wall scraper, through groove, feed grid and collection frame to cooperate. When the inner wall scraper rotates to the through groove, dust and attached objects enter the collection frame through the feed grid, so that the dust and attached objects in the device can be collected, avoiding excessive dust and attached objects in the device and causing the device to overload and shut down. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the entire utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the mixed-flow motor of this utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the sieve filter of this utility model;

[0019] Figure 4 This is a utility model Figure 3 A magnified schematic diagram of the structure at point A in the middle;

[0020] Figure 5 This is a schematic diagram of the structure of the material collection frame of this utility model.

[0021] The attached diagram lists the components represented by each number as follows:

[0022] 1. Fan duct; 2. Support leg; 3. Fan support plate; 4. Mixed-flow motor; 5. Fan shaft; 6. Mixed-flow fan; 7. Anti-clogging device; 71. Screening mesh; 72. Slow-rotating motor; 73. Rotating shaft; 74. Anti-clogging scraper; 75. Elastic telescopic rod; 76. Horizontal handle; 77. Pressure-bearing arc block; 78. Vibration hammer; 79. Irregularly shaped bracket; 710. Vertical ring; 711. Pressure-applying arc block; 8. Collection device; 81. Inner wall scraper; 82. Through groove; 83. Feed grid; 84. Collection frame. Detailed Implementation

[0023] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0024] like Figure 1-5 As shown, a mixed-flow fan includes a fan duct 1, a support leg 2 fixedly connected to the outer wall of the fan duct 1, a fan support plate 3 fixedly connected to the inner wall of the fan duct 1, a mixed-flow motor 4 fixedly connected to the side of the fan support plate 3, a fan shaft 5 fixedly connected to the output shaft of the mixed-flow motor 4, a mixed-flow fan 6 fixedly connected to the outer wall of the fan shaft 5, an anti-clogging device 7 provided on the inner wall of the fan duct 1, the anti-clogging device 7 includes a screen filter 71, the outer wall of the screen filter 71 fixedly connected to the inner wall of the fan duct 1, a slow-rotating motor 72 fixedly connected to the side of the screen filter 71, a rotating shaft 73 fixedly connected to the output shaft of the slow-rotating motor 72, an anti-clogging scraper 74 fixedly connected to the outer wall of the rotating shaft 73, and a vibration removal component provided on the side of the rotating shaft 73 away from the slow-rotating motor 72. The vibration removal component ensures that excessive accumulation will not occur during dust removal.

[0025] The vibration damping assembly includes an elastic telescopic rod 75. The fixed end of the elastic telescopic rod 75 is fixedly connected to the side of the rotating shaft 73 away from the slow-rotating motor 72. The telescopic end of the elastic telescopic rod 75 is fixedly connected to a horizontal handle 76. A pressure-bearing arc block 77 is fixedly connected to the side of the horizontal handle 76 near the rotating shaft 73. A vibration hammer 78 is fixedly connected to the side of the horizontal handle 76 near the rotating shaft 73. A shaped bracket 79 is fixedly connected to the side of the fan support plate 3. A vertical ring 710 is fixedly connected to the inner wall of the shaped bracket 79. A pressure-applying arc block 711 is fixedly connected to the side of the vertical ring 710 near the fan support plate 3. The basic compression linkage ensures the stable operation of the device.

[0026] The side of the pressure-bearing arc block 77 near the fan support plate 3 is set with an arc surface, and the side of the pressure-applying arc block 711 near the rotating shaft 73 is set with an arc surface. The arc surface setting allows each component to operate more smoothly.

[0027] The arc surface of the pressure arc block 711 is located on the movement trajectory of the arc surface of the pressure arc block 77. The side of the anti-clogging scraper 74 near the rotating shaft 73 is in contact with the side of the sieve filter screen 71 near the fan support plate 3. The necessary contact ensures that the anti-clogging scraper 74 can perform effective cleaning.

[0028] According to the above structure, when the device starts operating, the operator turns on the slow-rotating motor 72. The output shaft of the slow-rotating motor 72 rotates, driving the rotating shaft 73 to rotate. The rotating shaft 73 rotates, driving the anti-clogging scraper 74 to rotate, causing the anti-clogging scraper 74 to scrape off the dust and debris on the screen 71. At the same time, the rotation of the rotating shaft 73 drives the elastic telescopic rod 75 to rotate, which in turn drives the horizontal handle 76 to rotate. During the rotation, the horizontal handle 76 drives the pressure-receiving arc block 77 to apply force to the pressure-applying arc block 711, so that the pressure-receiving arc block 77 is subjected to force. After the force is applied, the horizontal handle 76 moves away from the rotating shaft 73. After the pressure block 77 moves past the pressure block 711, the horizontal handle 76 moves towards the rotating shaft 73 under the elastic force of the elastic telescopic rod 75. The movement of the horizontal handle 76 towards the rotating shaft 73 drives the shock hammer 78 to move towards the rotating shaft 73, so that the shock hammer 78 repeatedly shocks the anti-blocking scraper 74, causing the dust and deposits on the anti-blocking scraper 74 to be shaken off, avoiding the presence of dust and dirt in the airflow, which could cause local blockage of the airflow in the machine and reduce the flow rate.

[0029] like Figure 1-5 As shown, a collection device 8 is provided on the side of the anti-clogging scraper 74 away from the screen 71. The collection device 8 includes an inner wall scraper 81. The side of the inner wall scraper 81 is fixedly connected to the side of the anti-clogging scraper 74 away from the screen 71. A through groove 82 is provided on the inner wall of the blower pipe 1. A feed grid 83 is fixedly connected to the inner wall of the through groove 82. A collection frame 84 is fixedly connected to the outer wall of the blower pipe 1. The setting of the collection frame 84 ensures that the scraped dust and attached materials can be effectively collected.

[0030] The outer wall of the inner scraper 81 is in contact with the inner wall of the fan pipe 1, and the outer wall of the feed grid 83 is located on the movement trajectory of the inner scraper 81, ensuring that the inner scraper 81 can effectively scrape and collect.

[0031] According to the above structure, the anti-blocking scraper 74 rotates, which drives the inner wall scraper 81 to rotate. The inner wall scraper 81 rotates so that it can scrape off the attached objects and dust on the inner wall of the fan pipe 1. When the inner wall scraper 81 rotates to the through groove 82, the dust and attached objects enter the collection frame 84 through the feed grid 83, so that the dust and attached objects in the device can be collected, avoiding excessive dust and attached objects in the device from accumulating and causing the device to overload and shut down.

[0032] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A mixed-flow fan, comprising a fan duct (1), wherein a support leg (2) is fixedly connected to the outer wall of the fan duct (1), a fan support plate (3) is fixedly connected to the inner wall of the fan duct (1), a mixed-flow motor (4) is fixedly connected to the side of the fan support plate (3), a fan shaft (5) is fixedly connected to the output shaft of the mixed-flow motor (4), and a mixed-flow fan (6) is fixedly connected to the outer wall of the fan shaft (5), characterized in that: An anti-clogging device (7) is provided on the inner wall of the fan pipe (1). The anti-clogging device (7) includes a sieve filter (71). The outer wall of the sieve filter (71) is fixedly connected to the inner wall of the fan pipe (1). A slow-rotating motor (72) is fixedly connected to the side of the sieve filter (71). A rotating shaft (73) is fixedly connected to the output shaft of the slow-rotating motor (72). An anti-clogging scraper (74) is fixedly connected to the outer wall of the rotating shaft (73). A vibration removal component is provided on the side of the rotating shaft (73) away from the slow-rotating motor (72).

2. A mixed-flow fan according to claim 1, characterized in that: The vibration damping assembly includes an elastic telescopic rod (75), the fixed end of which is fixedly connected to the side of the rotating shaft (73) away from the slow-rotating motor (72). The telescopic end of the elastic telescopic rod (75) is fixedly connected to a horizontal handle (76). A pressure-bearing arc block (77) is fixedly connected to the side of the horizontal handle (76) near the rotating shaft (73). A shock hammer (78) is fixedly connected to the side of the horizontal handle (76) near the rotating shaft (73). A shaped bracket (79) is fixedly connected to the side of the fan support plate (3). A vertical ring (710) is fixedly connected to the inner wall of the shaped bracket (79). A pressure-applying arc block (711) is fixedly connected to the side of the vertical ring (710) near the fan support plate (3).

3. A mixed-flow fan according to claim 2, characterized in that: The side of the pressure-bearing arc block (77) near the fan support plate (3) is set with an arc surface, and the side of the pressure-applying arc block (711) near the rotating shaft (73) is set with an arc surface.

4. A mixed-flow fan according to claim 2, characterized in that: The arc surface of the pressure-applying arc block (711) is located on the movement trajectory of the arc surface of the pressure-receiving arc block (77), and the side of the anti-blocking scraper (74) near the rotating shaft (73) is in contact with the side of the sieve filter (71) near the fan support plate (3).

5. A mixed-flow fan according to claim 1, characterized in that: A collection device (8) is provided on the side of the anti-clogging scraper (74) away from the screen (71). The collection device (8) includes an inner wall scraper (81). The side of the inner wall scraper (81) is fixedly connected to the side of the anti-clogging scraper (74) away from the screen (71). A through groove (82) is provided on the inner wall of the blower pipe (1). A feed grid (83) is fixedly connected to the inner wall of the through groove (82). A collection frame (84) is fixedly connected to the outer wall of the blower pipe (1).

6. A mixed-flow fan according to claim 5, characterized in that: The outer wall of the inner scraper (81) is in contact with the inner wall of the fan pipe (1), and the outer wall of the feed grid (83) is located on the movement trajectory of the inner scraper (81).

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