Forward multi-wing centrifugal fan

Abstract

The utility model provides a forward multi-wing centrifugal fan, which relates to the technical field of multi-wing centrifugal fans and comprises a bottom plate, a dust removal mechanism and a fixing mechanism, a mounting seat is mounted at the center of the top of the bottom plate, a fan shell is mounted at the top of the mounting seat, the dust removal mechanism comprises a threaded rod, a pair of mounting rods is mounted on one side of the top of the bottom plate, and the fixing mechanism is mounted on the mounting rod. The fixing mechanism comprises an adjusting plate, a connecting plate is mounted on one side of the back face of the bottom plate, an air cylinder is mounted on one side of the top of the connecting plate, and the air cylinder is mounted on one side of the top of the connecting plate. The adjusting plate is connected with the output end of the air cylinder. The dustproof device is simple and reasonable in structure, novel in design and easy and convenient to operate, dust on the dustproof net is effectively cleaned, the dustproof effect is improved, noise in use is reduced, and the dustproof device has high practical value.

Description

Technical Field

[0001] This utility model belongs to the technical field of multi-blade centrifugal fans, and more specifically, it relates to a forward-curved multi-blade centrifugal fan. Background Technology

[0002] Centrifugal fans are fluid machinery widely used in industrial and civil fields. They mainly rely on input mechanical energy to increase gas pressure and discharge gas. Centrifugal fans accelerate gas through a high-speed rotating impeller and use inertial centrifugal force to discharge the gas. Centrifugal fans have a wide range of applications, including factory ventilation, mine ventilation, tunnel ventilation, cooling tower fans, boiler induced draft, air conditioning equipment, household appliance cooling, grain drying, wind tunnel air source, hovercraft inflation and propulsion, etc.

[0003] Based on the above, the inventors have discovered the following problems: Current centrifuges generally have a filter screen installed at the air inlet to filter dust. However, due to long-term use, a large amount of dust accumulates at the filter screen, affecting the normal flow of air and causing some air to leak through abnormal channels. Furthermore, the irregular flow of air also generates noise.

[0004] Therefore, in view of this, we have studied and improved the existing structure and its shortcomings, and provided a forward-curved multi-blade centrifugal fan in order to achieve a more practical purpose. Utility Model Content

[0005] To address the aforementioned technical problems, this utility model provides a forward-curved multi-blade centrifugal fan to solve the issues in the current background technology.

[0006] The purpose and effect of this utility model of forward-curved multi-blade centrifugal fan are achieved by the following specific technical means:

[0007] A forward-curved multi-blade centrifugal fan includes a base plate, a dust removal mechanism, and a fixing mechanism. A mounting base is installed at the top center of the base plate, and a fan housing is mounted on top of the mounting base. The dust removal mechanism includes a threaded rod, and a pair of mounting rods are installed on one side of the top of the base plate. Each pair of mounting rods has a groove inside, and the threaded rod is installed inside one of the grooves. A sliding rod is connected inside the other groove. A motor is installed on the top of one of the mounting rods, and the output end of the motor is connected to the threaded rod. A slider is provided on the outside of both the threaded rod and the sliding rod, and a connecting block is provided on one side of each slider. A rotating rod is connected between a pair of connecting blocks, and a cleaning felt is provided on the outside of the rotating rod. The fixing mechanism includes an adjusting plate, and a connecting plate is installed on one side of the back of the base plate. A cylinder is installed on the top side of the connecting plate, and the adjusting plate is connected to the output end of the cylinder.

[0008] Furthermore, connecting brackets are installed on both sides of the connecting block, and a plug rod is installed at one end of each pair of connecting brackets. Slots are provided on both sides of the inside of the slider, and the plug rod and the slot engage with each other.

[0009] Furthermore, the slider has a movable groove at the top of the slot, and a movable rod is inserted inside the movable groove. The top end of the movable rod passes through the slider and is fitted with a pull block. A limiting plate is provided at the bottom of the movable groove, and the outer side of the limiting plate is in clearance fit with the inner wall of the movable groove.

[0010] Furthermore, a fixing groove is provided on one side of the inner side of the insertion rod, and the bottom end of the moving rod passes through the limiting plate and engages with the fixing groove. A spring is provided on the outside of the moving rod, and one end of the spring is connected to the top of the moving groove, while the other end of the spring is connected to the limiting plate.

[0011] Furthermore, adjusting rods are hinged to both sides of the top of the adjusting block, and sliding plates are installed on both sides of the top of the base plate. A pair of limiting blocks are slidably installed on the outside of each pair of sliding plates. A fixing plate is installed between the limiting blocks, and one end of the adjusting rod is hinged to the fixing plate.

[0012] Furthermore, an air inlet is provided on one side of the fan housing, and a dustproof net is installed on the inner side of the air inlet. The cleaning felt and the dustproof net are attached to each other, and an air outlet is provided on the outer side of the fan housing.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. This type of forward-curved multi-blade centrifugal fan utilizes a combination of a dustproof net, a sliding groove, a threaded rod, a sliding bar, a motor, a slider, a connecting block, a rotating block, cleaning felt, insert rods, slots, a moving rod, and a limiting plate. The dustproof net continuously filters impurities in the airflow. Starting the motor causes the threaded rod to rotate. One slider is threadedly connected to the threaded rod, causing a pair of sliders to move up and down on the threaded rod and sliding bar. This allows the cleaning felt to clean the dust adhering to the dustproof net. After continuous dust removal, a pair of pull blocks can be pulled, causing the moving rod to move. As the moving rod moves, the limiting plate moves upward, limiting the trajectory of the moving rod. Pulling upward compresses the spring, and the moving rod separates from the fixed slot. A pair of insert rods and a connecting block can then be removed, and the cleaning felt can be cleaned and replaced, improving subsequent cleaning effectiveness.

[0015] 2. This type of forward-curved multi-blade centrifugal fan, through the coordinated use of a cylinder, adjusting block, adjusting rod, sliding plate, limit block, and fixed plate, allows the mounting base and fan to be placed on the bottom. Activating the cylinder causes the adjusting plate to move back and forth, changing the angle of a pair of adjusting rods. When the adjusting rods pull the fixed plates closer together, they clamp the exterior of the mounting base, preventing displacement during fan operation. When the fixed plates move away, the fan can be removed for easy maintenance or inspection. This invention features a simple and reasonable structure, novel design, and easy and convenient operation. It effectively cleans dust from the dust filter, improving dust prevention and reducing noise during use, thus possessing high practical value. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of the present invention.

[0017] Figure 2 This is a partial three-dimensional structural schematic diagram of this utility model.

[0018] Figure 3 This is a schematic cross-sectional view of the mounting rod of this utility model.

[0019] Figure 4 This is a top view schematic diagram of the slider of this utility model.

[0020] Figure 5 This is the utility model Figure 3 An enlarged schematic diagram of the structure at point A in the middle.

[0021] In the diagram, the correspondence between component names and drawing numbers is as follows:

[0022] 1001, Base plate; 1002, Mounting base; 1003, Fan housing; 1004, Air outlet; 1005, Air inlet; 1006, Dustproof net; 2001, Mounting rod; 2002, Slide groove; 2003, Threaded rod; 2004, Slide rod; 2005, Motor; 2006, Slider; 2007, Connecting block; 2008, Rotating rod; 2009, Cleaning felt; 2010, Connecting frame; 2011, Insert rod; 2012, Slot; 2013, Moving rod; 2014, Pull block; 2015, Limiting plate; 2016, Fixing groove; 2017, Spring; 3001, Connecting plate; 3002, Cylinder; 3003, Adjusting block; 3004, Adjusting rod; 3005, Slide plate; 3006, Limiting block; 3007, Fixing plate. Detailed Implementation

[0023] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0024] Example:

[0025] As attached Figure 1 To be continued Figure 5 As shown:

[0026] This utility model provides a forward-curved multi-blade centrifugal fan, including a base plate 1001, a dust removal mechanism, and a fixing mechanism. A mounting base 1002 is installed at the top center of the base plate 1001, and a fan housing 1003 is installed on the top of the mounting base 1002. The dust removal mechanism includes a threaded rod 2003, and a pair of mounting rods 2001 are installed on one side of the top of the base plate 1001. Each of the mounting rods 2001 has a groove 2002 inside. The threaded rod 2003 is installed inside one of the grooves 2002, and a sliding rod 2004 is connected inside the other groove. One of the mounting rods 2001... A motor 2005 is mounted on the top, and the output end of the motor 2005 is connected to the threaded rod 2003. The threaded rod 2003 and the slide rod 2004 are both provided with sliders 2006. A connecting block 2007 is provided on one side of the slider 2006. A rotating rod 2008 is connected between a pair of connecting blocks 2007. A cleaning felt 2009 is provided on the outside of the rotating rod 2008. The fixing mechanism includes an adjusting plate. A connecting plate 3001 is mounted on one side of the back of the base plate 1001. A cylinder 3002 is mounted on one side of the top of the connecting plate 3001. The adjusting plate and the output end of the cylinder 3002 are connected to each other.

[0027] The connecting block 2007 has connecting brackets 2010 installed on both sides, and a plug rod 2011 is installed at one end of each pair of connecting brackets 2010. The slider 2006 has slots 2012 on both sides inside, and the plug rod 2011 and the slot 2012 engage with each other.

[0028] The slider 2006 has a movable groove at the top of the slot 2012, and a movable rod 2013 is inserted into the movable groove. The top of the movable rod 2013 passes through the slider 2006 and is fitted with a pull block 2014. The bottom of the movable groove has a limiting plate 2015. The outer side of the limiting plate 2015 is in clearance fit with the inner wall of the movable groove. By installing the limiting plate 2015, the movement trajectory of the movable rod 2013 is limited, so that the movable rod 2013 can be engaged with the fixed groove 2016.

[0029] The insert rod 2011 has a fixing groove 2016 on one side inside, and the bottom end of the moving rod 2013 passes through the limiting plate 2015 and engages with the fixing groove 2016. The moving rod 2013 has a spring 2017 on the outside, and one end of the spring 2017 is connected to the top of the moving groove, and the other end of the spring 2017 is connected to the limiting plate 2015.

[0030] The top two sides of the adjusting block 3003 are hinged with adjusting rods 3004. The top of the base plate 1001 is equipped with sliding plates 3005 on both sides of the mounting base 1002. A pair of limiting blocks 3006 are slidably installed on the outside of each pair of sliding plates 3005. A fixing plate 3007 is installed between the limiting blocks 3006. One end of the adjusting rod 3004 is hinged to the fixing plate 3007. By installing a pair of adjusting rods 3004, the pair of fixing plates 3007 can be moved to clamp and fix the mounting base 1002.

[0031] The fan housing 1003 has an air inlet 1005 on one side, and a dustproof net 1006 is installed on the inner side of the air inlet 1005. The cleaning felt 2009 is attached to the dustproof net 1006, and an air outlet 1004 is provided on the outer side of the fan housing 1003.

[0032] The specific usage and function of this embodiment are as follows:

[0033] When using this product, first, check if the connections are secure. After ensuring they are secure, place the mounting base 1002 and the fan on the bottom. Then, start the cylinder 3002, causing it to move the adjusting plate back and forth, changing the angle of the pair of adjusting rods 3004. When the adjusting rods 3004 pull the pair of fixing plates 3007 closer together, they clamp the outside of the mounting base 1002, preventing displacement during fan operation. When the pair of fixing plates 3007 move away from each other, the fan can be removed for easy maintenance or inspection. During fan operation, the dust filter 1006 filters impurities in the airflow. The dust filter 1006 continuously filters impurities in the airflow. Then, start the motor 2005, causing it to rotate the threaded rod 2003. One of the sliders 2006 is threadedly connected to the threaded rod 2003, driving the pair of sliders 2006... The threaded rod 2003 and slide rod 2004 move up and down, allowing the cleaning felt 2009 to clean the dust adhering to the dustproof net 1006. After long-term dust cleaning, a pair of pull blocks 2014 can be pulled, causing the pull blocks 2014 to move the moving rod 2013. When the moving rod 2013 moves, it causes the limiting plate 2015 to move upward, limiting the movement trajectory of the moving rod 2013. When pulled upward, the spring 2017 is squeezed, and the moving rod 2013 separates from the fixing groove 2016. A pair of insert rods 2011 and connecting block 2007 are removed respectively, and the cleaning felt 2009 is cleaned and replaced to improve the subsequent cleaning effect. After that, when the insert rod 2011 is inserted into the slot 2012, the pull block 2014 can be released, and the spring 2017 will help the moving rod 2013 return to its original position and be inserted into the fixing groove 2016 to install the cleaning felt 2009.

[0034] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A forward-curved multi-blade centrifugal fan, characterized in that: The system includes a base plate (1001), a dust removal mechanism, and a fixing mechanism. A mounting base (1002) is installed at the top center of the base plate (1001), and a fan housing (1003) is installed on the top of the mounting base (1002). The dust removal mechanism includes a threaded rod (2003), and a pair of mounting rods (2001) are installed on one side of the top of the base plate (1001). Each pair of mounting rods (2001) has a groove (2002) inside. The threaded rod (2003) is installed inside one of the grooves (2002), and a sliding rod (2004) is connected inside the other groove (2002). A motor (2004) is installed on the top of one of the mounting rods (2001). 5), and the output end of the motor (2005) is connected to the threaded rod (2003) for transmission. The threaded rod (2003) and the slide rod (2004) are both provided with sliders (2006). A connecting block (2007) is provided on one side of the slider (2006). A rotating rod (2008) is connected between a pair of connecting blocks (2007). A cleaning felt (2009) is provided on the outside of the rotating rod (2008). The fixing mechanism includes an adjusting plate. A connecting plate (3001) is installed on one side of the back of the base plate (1001). A cylinder (3002) is installed on one side of the top of the connecting plate (3001). The adjusting plate and the output end of the cylinder (3002) are connected to each other.

2. The forward-curved multi-blade centrifugal fan as described in claim 1, characterized in that: The connecting block (2007) is equipped with connecting brackets (2010) on both sides, and a plug rod (2011) is installed at one end of a pair of connecting brackets (2010). The slider (2006) has slots (2012) on both sides inside, and the plug rod (2011) and the slot (2012) engage with each other.

3. The forward-curved multi-blade centrifugal fan as described in claim 2, characterized in that: The slider (2006) has a movable groove at the top of the slot (2012) inside, and a movable rod (2013) is inserted inside the movable groove. The top of the movable rod (2013) passes through the slider (2006) and is fitted with a pull block (2014). The bottom of the movable groove is provided with a limiting plate (2015), and the outside of the limiting plate (2015) is in clearance fit with the inner wall of the movable groove.

4. The forward-curved multi-blade centrifugal fan as described in claim 3, characterized in that: The insert rod (2011) has a fixing groove (2016) on one side inside, and the bottom end of the moving rod (2013) passes through the limiting plate (2015) and engages with the fixing groove (2016). The moving rod (2013) has a spring (2017) on the outside, and one end of the spring (2017) is connected to the top of the moving groove, and the other end of the spring (2017) is connected to the limiting plate (2015).

5. The forward-curved multi-blade centrifugal fan as described in claim 1, characterized in that: Adjusting rods (3004) are hinged to both sides of the top of the adjusting block (3003). Slide plates (3005) are mounted on both sides of the mounting base (1002) on the top of the base plate (1001). A pair of limiting blocks (3006) are slidably mounted on the outside of each pair of sliding plates (3005). A fixing plate (3007) is installed between the limiting blocks (3006). One end of the adjusting rod (3004) is hinged to the fixing plate (3007).

6. The forward-curved multi-blade centrifugal fan as described in claim 1, characterized in that: The fan housing (1003) has an air inlet (1005) on one side, and a dustproof net (1006) is installed on the inner side of the air inlet (1005). The cleaning felt (2009) is attached to the dustproof net (1006), and an air outlet (1004) is provided on the outer side of the fan housing (1003).

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