Low-noise drying air knife fan

Abstract

The utility model discloses a low-noise drying air knife fan which comprises a first side plate, a shell cover is arranged on one side of the first side plate, and a second side plate is arranged on one side of the shell cover. A rotating plate located in the shell cover is arranged on one side of the first side plate, a plurality of centrifugal fan blades are arranged on the rotating plate at equal angles, a first heater and a second heater are installed on the inner side and the outer side of each centrifugal fan blade in an embedded mode respectively, and carbon contact rods are connected to the ends of the first heaters and the ends of the second heaters respectively; one end of the carbon contact rod penetrates through the rotating plate, a first carbon brush ring is arranged on the other side of the rotating plate, a second carbon brush ring is connected to one side of the first carbon brush ring in an attached mode, and a plurality of supporting springs are arranged between the second carbon brush ring and the first side plate. Rotation noise of the fan blades is reduced through the centrifugal fan blades, and the heating pipe is additionally arranged in the air knife, so that air pressure and temperature of air at the air outlet are guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of drying air knife fans, and in particular to a low-noise drying air knife fan. Background Technology

[0002] Air-knife dryers are undoubtedly one of the most effective tools for drying bottles and cans. They cleverly utilize the wind tunnel effect to improve drying efficiency and dryness.

[0003] The air knife dryer uses a stirring hot air fan and a circulating hot air knife. In addition to taking advantage of the environmental protection and energy saving of hot air circulation, it can directly heat, control the temperature, adjust the air volume and direction, and achieve the effects of hot air drying, heat shrinking and heat treatment faster, more accurately and evenly.

[0004] Drying fans are essential equipment in many industrial applications, primarily used for drying materials. Understanding their parameters and selection calculation methods is crucial when selecting a drying fan to ensure the chosen equipment meets specific drying needs. This article will detail the parameters and selection calculation methods for drying fans.

[0005] Referring to the existing Chinese patent with publication number CN106403574A, a closed-type heating air knife device is disclosed, including an air knife box body. The air knife box body is a box with a knife-shaped structure at the bottom. An air inlet is provided at each of the top 1 / 4 of the air knife box body. The air inlets are connected to a powerful fan through a blower pipe. Three stainless steel heating tubes are fixed inside the cavity of the air knife box body. An internal support plate for supporting the stainless steel heating tubes is provided in the middle of the cavity of the air knife box body. The two ends of the stainless steel heating tubes are fixed by flanges located on both sides of the air knife box body. Flange plates are provided at the connection between the flanges and the two sides of the air knife box body. A slender air knife mouth is provided at the bottom of the air knife box body.

[0006] The aforementioned device exhibits low overall heat loss, excellent drying effect, long service life, and ease of maintenance and installation. It also prevents color differences on the surface of processed parts due to uneven heating during drying. However, this device still has some drawbacks, such as: 1. It cannot reduce noise, as the rotating blades generate considerable noise; 2. It cannot effectively control the temperature of the blown airflow. Utility Model Content

[0007] In view of the problems mentioned in the background art, the purpose of this utility model is to provide a low-noise drying air knife fan to solve the problems mentioned in the background art.

[0008] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0009] A low-noise drying air knife fan includes a first side plate, a housing cover is fixedly provided on one side of the first side plate, a second side plate is fixedly provided on one side of the housing cover, and an air inlet is provided in the middle of the second side plate.

[0010] One side of the first side plate is provided with a rotating plate inside the outer casing. The rotating plate is provided with a plurality of centrifugal fan blades at equal angles. A first heater and a second heater are respectively embedded in the inner and outer sides of the centrifugal fan blades. The ends of the first heater and the second heater are respectively connected to carbon contact rods. One end of the carbon contact rod passes through the rotating plate. A first carbon brush ring is provided on the other side of the rotating plate. A second carbon brush ring is attached to one side of the first carbon brush ring. The second carbon brush ring is movably embedded in the first side plate. A plurality of support springs are provided between the second carbon brush ring and the first side plate.

[0011] By adopting the above technical solution, the rotational noise of the centrifugal fan blades is reduced through the design. Specifically, the air source is changed from the existing high-power, high-noise vortex air pump fan to a low-power, low-noise high-pressure centrifugal fan. Simultaneously, to ensure the temperature of the air source, a heating element is added inside the air blade, thereby guaranteeing the air pressure and temperature at the outlet. Specifically, a first heater and a second heater are embedded and installed on both sides of the centrifugal fan blades. The design of the first and second heaters facilitates the control of the outlet air temperature. Furthermore, to maintain stable power supply during the rotation of the centrifugal fan blades, a carbon contact rod connects to the first carbon brush ring, and a support spring facilitates the support of the second carbon brush ring. This allows for adaptive adjustment of the second carbon brush ring, ensuring contact between the second and first carbon brush rings, effectively achieving stable power supply, maintaining stable power supply operation, and improving the overall system stability.

[0012] Preferably, the first carbon brush ring is in close contact with the carbon contact rod to achieve power supply operation. A first engagement groove is provided on one side of the first carbon brush ring, and a connecting ring is provided on one side of the second carbon brush ring. The connecting ring is movably located inside the first engagement groove.

[0013] By adopting the above technical solution, the connection between the first carbon brush ring and the carbon contact rod, as well as the contact connection between the first carbon brush ring and the second carbon brush ring, enables stable power supply operation of the system. Furthermore, the setting of the connecting ring facilitates maintaining stable contact between the first carbon brush ring and the second carbon brush ring.

[0014] Preferably, a second engaging groove is provided on one side of the first side plate, the second carbon brush ring is movably located inside the second engaging groove, and the two ends of the plurality of support springs are respectively connected to one side of the second carbon brush ring and one side of the second engaging groove.

[0015] By adopting the above technical solution, the design of the second engagement groove facilitates the installation and connection of the second carbon brush ring, maintains the stability of the second carbon brush ring, and facilitates contact power supply with the first carbon brush ring.

[0016] Preferably, two wire holes are provided on one side of the second locking groove, and the two wire holes are respectively used to thread positive and negative cables. A connector is fixedly installed at the bottom of the first side plate, and the positive and negative cables are electrically connected to the connector. A plug hole is provided in the middle of the connector.

[0017] By adopting the above technical solution, the design of the wire hole facilitates the threading of positive and negative cables, making it easier for the positive and negative cables to supply power to the second carbon brush ring. Furthermore, the design of the connector and plug hole facilitates power supply operation.

[0018] Preferably, the rotating plate has a connecting shaft in the middle, the first side plate has a shaft hole in the middle, the connecting shaft passes through the shaft hole, and the end of the connecting shaft is connected to the output end of the servo motor.

[0019] By adopting the above technical solution, the setting of the connecting shaft facilitates connection with the servo motor, making it easy to rotate the centrifugal fan blades and the rotating plate.

[0020] Preferably, a mounting plate is fixedly provided on one side of the first side plate, and the servo motor is fixedly mounted on the mounting plate.

[0021] By adopting the above technical solution, the mounting plate is designed to facilitate the installation of servo motors and maintain their stable operation.

[0022] Preferably, a support ring is fixedly provided on one side of the first side plate, and the support ring is disposed between the connecting shaft and the first carbon brush ring.

[0023] By adopting the above technical solution, the support ring is designed to facilitate the support of the rotating plate and the first carbon brush ring, thus achieving a rotatable connection.

[0024] Preferably, support plates are welded to the bottom sides of the first side plate, the outer casing, and the second side plate, and a contact plate is fixedly provided at the bottom of the support plate; the end of the outer casing is connected to a knife-splitter cylinder through a flexible hose.

[0025] By adopting the above technical solution, the design of the support plate and contact plate facilitates the support and installation of the equipment.

[0026] In summary, the present invention has the following main advantages:

[0027] This invention reduces the rotational noise of the centrifugal fan blades by replacing the existing high-power, high-noise vortex air pump with a low-power, low-noise high-pressure centrifugal fan. To ensure the temperature of the air source, a heating element is added inside the air blade, thus guaranteeing the air pressure and temperature at the outlet. A first heater and a second heater are embedded on both sides of the centrifugal fan blades. The design of these heaters facilitates control of the outlet air temperature. To maintain stable power supply during fan blade rotation, a carbon contact rod connects to the first carbon brush ring, and a support spring supports the second carbon brush ring, allowing for adaptive adjustment. This connection between the second and first carbon brush rings effectively achieves stable power supply, maintains stable operation, and improves the overall system stability. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of this utility model;

[0029] Figure 2 This is a partial structural schematic diagram of the present invention;

[0030] Figure 3 This is a schematic diagram of the centrifugal fan blade of this utility model;

[0031] Figure 4 This is a schematic diagram of the servo motor of this utility model;

[0032] Figure 5 This is an exploded view of the left side of a portion of the structure of this utility model;

[0033] Figure 6 This is an exploded view of part of the structure of this utility model on the right.

[0034] Reference numerals: 1. First side plate; 2. Outer casing; 3. Second side plate; 4. Air inlet; 5. Servo motor; 6. Rotating plate; 7. Centrifugal fan blade; 8. First heater; 9. Second heater; 10. Carbon contact rod; 11. Mounting plate; 12. Support ring; 13. First carbon brush ring; 14. First engagement groove; 15. Connecting shaft; 16. Pressure plate; 17. Contact plate; 18. Wire hole; 19. Second carbon brush ring; 20. Connecting ring; 21. Support spring; 22. Shaft hole; 23. Positive and negative cables; 24. Terminal; 25. Plug hole; 26. Support plate; 27. Flexible hose; 28. Air knife. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0036] Example

[0037] refer to Figure 1-6 A low-noise drying air knife fan includes a first side plate 1, a housing cover 2 is fixedly provided on one side of the first side plate 1, a second side plate 3 is fixedly provided on one side of the housing cover 2, and an air inlet 4 is provided in the middle of the second side plate 3.

[0038] A rotating plate 6 is provided on one side of the first side plate 1, which is located inside the outer casing 2. Several centrifugal fan blades 7 are provided at equal angles on the rotating plate 6. A first heater 8 and a second heater 9 are respectively embedded on the inner and outer sides of the centrifugal fan blades 7. The ends of the first heater 8 and the second heater 9 are respectively connected to carbon contact rods 10. One end of the carbon contact rod 10 passes through the rotating plate 6. A first carbon brush ring 13 is provided on the other side of the rotating plate 6. A second carbon brush ring 19 is attached to one side of the first carbon brush ring 13. The second carbon brush ring 19 is movably embedded in the first side plate 1. Several support springs 21 are provided between the second carbon brush ring 19 and the first side plate 1.

[0039] The rotational noise of the centrifugal fan blades 7 is reduced by replacing the existing high-power, high-noise vortex air pump with a low-power, low-noise high-pressure centrifugal fan. To ensure the temperature of the air source, a heating element is added inside the air blade, thus guaranteeing the air pressure and temperature at the outlet. Specifically, a first heater 8 and a second heater 9 are embedded on both sides of the centrifugal fan blades 7. The placement of the first heater 8 and the second heater 9 facilitates control of the outlet air temperature. To maintain stable power supply during the rotation of the centrifugal fan blades 7, a carbon contact rod 10 connects to the first carbon brush ring 13, and a support spring 21 supports the second carbon brush ring 19, allowing for adaptive adjustment. This ensures contact between the second carbon brush ring 19 and the first carbon brush ring 13, effectively achieving stable power supply, maintaining stable power supply operation, and improving the overall system stability.

[0040] In this embodiment, preferably, the first carbon brush ring 13 is fitted and connected to the carbon contact rod 10 to achieve power supply operation. A first engagement groove 14 is provided on one side of the first carbon brush ring 13, and a connecting ring 20 is provided on one side of the second carbon brush ring 19. The connecting ring 20 is movably located inside the first engagement groove 14. The connection between the first carbon brush ring 13 and the carbon contact rod 10, as well as the contact connection between the first carbon brush ring 13 and the second carbon brush ring 19, enables stable power supply operation of the system. Furthermore, the setting of the connecting ring 20 facilitates maintaining stable contact between the first carbon brush ring 13 and the second carbon brush ring 19.

[0041] In this embodiment, preferably, a second engaging groove 17 is provided on one side of the first side plate 1, and the second carbon brush ring 19 is movably located inside the second engaging groove 17. The two ends of a plurality of support springs 21 are respectively connected to one side of the second carbon brush ring 19 and one side of the second engaging groove 17. The setting of the second engaging groove 17 facilitates the installation and connection of the second carbon brush ring 19, maintains the stability of the second carbon brush ring 19, and facilitates contact power supply with the first carbon brush ring 13.

[0042] In this embodiment, preferably, two wire holes 18 are provided on one side of the second locking groove 17. The two wire holes 18 are respectively used to thread the positive and negative cables 23. A connector 24 is fixedly installed at the bottom of the first side plate 1. The positive and negative cables 23 are electrically connected to the connector 24. A plug hole 25 is provided in the middle of the connector 24. The wire holes 18 are designed to facilitate threading the positive and negative cables 23, so that the positive and negative cables 23 can easily supply power to the second carbon brush ring 19. The connector 24 and the plug hole 25 are designed to facilitate power supply operation.

[0043] In this embodiment, preferably, the rotating plate 6 is provided with a connecting shaft 15 in the middle, and the first side plate 1 is provided with a shaft hole 22 in the middle. The connecting shaft 15 passes through the shaft hole 22, and the end of the connecting shaft 15 is connected to the output end of the servo motor 5. The setting of the connecting shaft 15 facilitates the connection with the servo motor 5, and facilitates the rotation of the centrifugal fan blade 7 and the rotating plate 6.

[0044] In this embodiment, preferably, a mounting plate 11 is fixedly provided on one side of the first side plate 1, and the servo motor 5 is fixedly mounted on the mounting plate 11. The mounting plate 11 facilitates the installation of the servo motor 5 and maintains the stable operation of the servo motor 5.

[0045] In this embodiment, preferably, a support ring 12 is fixedly provided on one side of the first side plate 1. The support ring 12 is disposed between the connecting shaft 15 and the first carbon brush ring 13. The setting of the support ring 12 facilitates the support of the rotating plate 6 and the support of the first carbon brush ring 13, thereby realizing a rotatable connection.

[0046] In this embodiment, preferably, support plates 26 are welded to the bottom sides of the first side plate 1, the outer casing 2, and the second side plate 3 respectively. A contact plate 16 is fixedly provided at the bottom of the support plate 26. The setting of the support plate 26 and the contact plate 16 facilitates the support and installation of the equipment. The end of the outer casing 2 is connected to a knife-splitter cylinder 28 through a flexible hose 27.

[0047] Operating principle and advantages:

[0048] In use, the external power supply is connected through the connector 24 and the plug hole 25, so that the connector 24 can supply power to the servo motor 5, and the second carbon brush ring 19 can be supplied through the positive and negative cables 23.

[0049] After installation, the second carbon brush ring 19 is supported by the support spring 21, allowing the second carbon brush ring 19 to contact the first carbon brush ring 13. The connecting ring 20 on the second carbon brush ring 19 is movable inside the first engagement groove 14 of the first carbon brush ring 13, achieving contact power supply. That is, when the servo motor 5 is running, it drives the rotating plate 6 and the centrifugal fan blade 7 to rotate. During rotation, due to the contact power supply between the second carbon brush ring 19 and the first carbon brush ring 13, the carbon contact rod 10 can supply power to the first heater 8 and the second heater 9. When the centrifugal fan blade 7 rotates, air is drawn in through the air inlet 4, and then heated by the first heater 8 and the second heater 9, making it easier to control the temperature of the outlet air. Furthermore, the setting of the centrifugal fan blade 7 can effectively reduce operating noise, that is, the air source is changed from the existing high-power, high-noise vortex air pump fan to a low-power, low-noise high-pressure centrifugal fan. At the same time, in order to ensure the temperature of the air source, a heating tube is added inside the air knife, thereby ensuring the air pressure and temperature of the outlet air.

[0050] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A low-noise drying air knife fan, comprising a first side plate (1), characterized in that: A housing cover (2) is fixedly provided on one side of the first side plate (1), and a second side plate (3) is fixedly provided on one side of the housing cover (2). An air inlet (4) is provided in the middle of the second side plate (3). A rotating plate (6) is provided on one side of the first side plate (1) inside the outer casing (2). Several centrifugal fan blades (7) are provided at equal angles on the rotating plate (6). A first heater (8) and a second heater (9) are respectively installed on the inner and outer sides of the centrifugal fan blades (7). Carbon contact rods (10) are respectively connected to the ends of the first heater (8) and the second heater (9). One end of the carbon contact rod (10) passes through the rotating plate (6). A first carbon brush ring (13) is provided on the other side of the rotating plate (6). A second carbon brush ring (19) is attached to one side of the first carbon brush ring (13). The second carbon brush ring (19) is movably embedded in the first side plate (1). Several support springs (21) are provided between the second carbon brush ring (19) and the first side plate (1).

2. The low-noise drying air knife fan according to claim 1, characterized in that: The first carbon brush ring (13) is fitted and connected to the carbon contact rod (10) to realize power supply operation. A first engagement groove (14) is provided on one side of the first carbon brush ring (13), and a connecting ring (20) is provided on one side of the second carbon brush ring (19). The connecting ring (20) is movably located inside the first engagement groove (14).

3. The low-noise drying air knife fan according to claim 1, characterized in that: A second engaging groove (17) is provided on one side of the first side plate (1). The second carbon brush ring (19) is movably located inside the second engaging groove (17). The two ends of a plurality of support springs (21) are respectively connected to one side of the second carbon brush ring (19) and one side of the second engaging groove (17).

4. A low-noise drying air knife blower according to claim 3, characterized in that: Two wire holes (18) are provided on one side of the second locking groove (17). The two wire holes (18) are used to thread the positive and negative cables (23) respectively. A connector (24) is fixedly installed at the bottom of the first side plate (1). The positive and negative cables (23) are electrically connected to the connector (24). A plug hole (25) is provided in the middle of the connector (24).

5. A low-noise drying air knife fan according to claim 1, characterized in that: The rotating plate (6) has a connecting shaft (15) in the middle, and the first side plate (1) has a shaft hole (22) in the middle. The connecting shaft (15) passes through the shaft hole (22), and the end of the connecting shaft (15) is connected to the output end of the servo motor (5).

6. A low-noise drying air knife blower according to claim 5, characterized in that: A mounting plate (11) is fixedly provided on one side of the first side plate (1), and the servo motor (5) is fixedly mounted on the mounting plate (11).

7. A low-noise drying air knife fan according to claim 6, characterized in that: A support ring (12) is fixedly provided on one side of the first side plate (1), and the support ring (12) is disposed between the connecting shaft (15) and the first carbon brush ring (13).

8. A low-noise drying air knife fan according to claim 1, characterized in that: Support plates (26) are welded to the bottom sides of the first side plate (1), the outer shell (2) and the second side plate (3), respectively. A contact plate (16) is fixedly provided at the bottom of the support plate (26); the end of the outer shell (2) is connected to a knife-splitter cylinder (28) through a hose (27).

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