Centrifugal fan convenient to maintain

Abstract

The centrifugal fan convenient to maintain comprises a machine shell, a rotating shaft is rotationally connected to the inner wall of the machine shell, a fan is fixedly connected to one side of the rotating shaft, one end of the rotating shaft extends to the outer side of the machine shell and is fixedly connected with external transmission equipment, an air outlet pipe is fixedly connected to the top of the machine shell, and a mounting groove is formed in one side of the machine shell; a baffle is slidably connected to the inner wall of the mounting groove, a connecting pipe is fixedly connected into the baffle, and a filter plate is arranged on the outer side of the connecting pipe. The centrifugal fan convenient to maintain has the effect that the outer shell is convenient to disassemble, the centrifugal fan convenient to maintain is convenient and fast to install, the interior of the centrifugal fan can be cleaned easily, the interior and the outer side of the centrifugal fan can be maintained, the service life of the centrifugal fan can be prolonged easily, and actual application and operation are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of centrifugal fans, in particular to a centrifugal fan which is easy to maintain. Background Art

[0002] Centrifugal fan is abbreviated as centrifugal fan. When the fan is working, the air flow enters the blade space from the fan axis, and then rotates with the impeller under the drive of the impeller; on the other hand, the energy is increased under the action of inertia. Due to the regular maintenance of the fan, the air inlet and casing of the fan are not easy to disassemble.

[0003] After searching, a Chinese patent discloses a centrifugal fan that is easy to maintain (authorization announcement number CN219509844U), including a fan body and a threaded connection part connected to the air inlet of the fan body, the outer surface of the threaded connection part is threadedly connected to a mounting part, the interior of the mounting part is provided with a plurality of slots and grooves, and the grooves and slots are connected, and a filter screen is coaxially placed inside the mounting part. The utility model can facilitate the staff to maintain, replace and clean the interior of the air inlet of the fan body and the filter screen in a relatively timely manner through the detachable mounting parts and filter screen, and does not need to use bolts, screwdrivers and other tools to assemble, install or disassemble them. Although the patent makes it difficult for the staff to disassemble or install in time due to the loss of bolts, thread slippage and lack of tools such as screwdrivers, the patent has strong flexibility and simple structure, which is convenient for the maintenance and operation of the centrifugal fan;

[0004] However, in actual application, the device lacks a structure that is convenient for installing and disassembling the fan casing. Since the fan requires lubricants such as engine oil to rotate and the internal power connection structure requires regular maintenance, the device still needs to be disassembled by removing screws, etc., which is time-consuming and labor-intensive, not conducive to quick maintenance, and not conducive to actual application and operation. Utility Model Content

[0005] The utility model discloses a centrifugal fan which is easy to maintain. In the background technology, the device lacks a structure for facilitating installation and disassembly of the fan casing. Since the fan needs lubricants such as engine oil to rotate and the internal power connection structure needs regular maintenance, the device still needs to be disassembled by removing screws, etc., which is time-consuming and labor-intensive, not conducive to rapid maintenance, and not conducive to practical application and operation. Technical problems.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A centrifugal fan that is easy to maintain, comprising a casing, an inner wall of the casing is rotatably connected to a rotating shaft, one side of the rotating shaft is fixedly connected to a fan, one end of the rotating shaft extends to the outside of the casing and is fixedly connected to an external transmission device, an air outlet pipe is fixedly connected to the top of the casing, a mounting groove is provided on one side of the casing, a baffle is slidably connected to the inner wall of the mounting groove, a connecting pipe is fixedly connected to the inside of the baffle, and a filter plate is arranged on the outside of the connecting pipe;

[0008] A clamping assembly is arranged inside the housing, and the clamping assembly is used to fix the baffle. A fixing assembly is arranged on the outside of the connecting pipe, and the fixing assembly is used to fix the filter plate.

[0009] The device is placed and installed at a specified position by setting, the rotating shaft is fixedly connected to the external transmission equipment, and the fan is driven to rotate by the rotating shaft. When the centrifugal fan needs to be maintained, the baffle is installed and disassembled by using the clamping assembly. When the filter plate needs to be replaced, it is replaced by the fixing assembly. The device is easy and quick to install and is conducive to cleaning the inside of the centrifugal fan, so that the inside and outside of the centrifugal fan are maintained, which is conducive to increasing its service life and is conducive to practical application and operation.

[0010] In a preferred embodiment, the clamping structure includes a limit groove, a pull rod, a clamping slot, a limit block, a return spring, a fixed groove and a fixed block. The fixed grooves are both opened at the two ends of the bottom of the inner wall of the installation groove, the fixed blocks are fixedly connected to the two ends of the bottom of the baffle, the fixed blocks are used in conjunction with the fixed grooves, the clamping slots are both opened at the two ends of the top of the baffle, the limit grooves are both opened inside the casing and are located above the installation groove, the limit blocks are slidably connected to the inner wall of the limit groove, the pull rod is fixedly connected to the inside of the limit block, the bottom of the pull rod extends to the inside of the installation groove and is used in conjunction with the clamping slot, the top of the pull rod extends to the top of the casing and is slidably connected thereto, and the return springs are sleeved on the outside of the pull rod and are located between the top of the limit block and the inner wall of the limit groove.

[0011] By pulling up the pull rod on the top of the casing and separating the bottom of the pull rod from the slot, the baffle is pushed upward, and the fixing slot is separated from the fixing block, the baffle can be taken out. When the baffle is installed inside the installation slot, the return spring is used in conjunction with the limit block to subject the pull rod to a downward elastic force, so that it enters the inside of the slot, and at the same time drives it to move downward, and the fixing block enters the inside of the fixing slot.

[0012] In a preferred embodiment, the fixing assembly includes an L-shaped block and a magnet. The L-shaped block is rotatably connected to the four corners of the connecting pipe. The magnet is fixedly connected to the outer side of the filter plate. The magnet is annular. The length of the inner side of the L-shaped block is equal to the thickness of the filter plate. The L-shaped block is made of iron and is used in conjunction with the magnet.

[0013] By setting an L-shaped block to fix the filter plate, the L-shaped block made of iron cooperates with a magnet to increase the firmness of the filter plate and the connecting pipe.

[0014] In a preferred embodiment, a gasket is inlaid and installed inside the baffle, and the gasket is made of rubber.

[0015] By setting the gasket, its rubber material has softness, which is beneficial to quickly seal the outside of the casing, thereby preventing air leakage of the centrifugal fan and reducing its power.

[0016] In a preferred embodiment, the baffle is T-shaped and the width of the bottom is equal to the width of the inner wall of the installation groove, and the length of the bottom of the baffle is less than the length of the inner wall of the installation groove.

[0017] By setting the length of the bottom of the baffle to be less than the length of the inner wall of the installation groove, it is beneficial for it to slide inside the installation groove, so as to facilitate the fixing block to enter the inside of the fixing groove.

[0018] In a preferred embodiment, air grooves are formed on the outer side of the filter plate, and filter meshes are arranged on the inner walls of the air grooves.

[0019] By setting the filter meshes to block dust and other sundries in the air, it is convenient for the normal operation of the centrifugal fan.

[0020] In a preferred embodiment, a fixing plate is fixedly connected to the outer side of the top of the air outlet pipe, and holes are equidistantly formed at the four ends of the top of the fixing plate, and the holes are connected to an external pipeline through screws.

[0021] By setting the holes and cooperating with the fixing plate to fixedly connect the air outlet pipe and the external pipeline, it is beneficial for the centrifugal fan to provide air flow for large equipment.

[0022] A centrifugal fan that is easy to maintain provided by the present utility model has the following advantages:

[0023] This device is set to be placed and installed at a designated position, the rotating shaft is fixedly connected to an external transmission device, and the rotating shaft is used to drive the fan to rotate. When maintenance of this centrifugal fan is required, the baffle is installed and disassembled by a clamping component. When the filter plate needs to be replaced, it is replaced by a fixing component. This device is convenient and fast to install, which is beneficial to cleaning the inside of the centrifugal fan, so that both the inside and the outside of the centrifugal fan are maintained, which is beneficial to increasing its service life and is beneficial to actual application and operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a first perspective three-dimensional schematic diagram of a centrifugal fan that is easy to maintain proposed by the present utility model.

[0025] Figure 2 This is a second - perspective three - dimensional schematic diagram of a centrifugal fan that is easy to maintain proposed by the present utility model.

[0026] Figure 3 This is a first - perspective three - dimensional exploded schematic diagram of a centrifugal fan that is easy to maintain proposed by the present utility model.

[0027] Figure 4 This is a third - perspective three - dimensional exploded schematic diagram of a centrifugal fan that is easy to maintain proposed by the present utility model.

[0028] In the attached drawings: 1. Housing; 2. Rotating shaft; 3. Air outlet pipe; 4. Fixed plate; 5. Pull rod; 6. Baffle; 7. Air duct; 8. Sealing gasket; 9. Connecting pipe; 10. Fan; 11. Installation groove; 12. Limit groove; 13. Return spring; 14. Limit block; 15. Card slot; 16. Fixed groove; 17. Fixed block; 18. Filter plate; 19. L - shaped block; 20. Magnet. Detailed implementation manners

[0029] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. Usually, the components of the embodiments of the present application described and marked in the attached drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the attached drawings is not intended to limit the scope of the present application claimed, but only represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present application.

[0030] What kind of scenarios is mainly applied to by a centrifugal fan that is easy to maintain disclosed by the present utility model.

[0031] Referring to Figure 1 and Figure 4 , a centrifugal fan that is easy to maintain includes a housing 1. The inner wall of the housing 1 is rotatably connected to a rotating shaft 2. One side of the rotating shaft 2 is fixedly connected to a fan 10. One end of the rotating shaft 2 extends to the outside of the housing 1 and is fixedly connected to an external transmission device. The top of the housing 1 is fixedly connected to an air outlet pipe 3. An installation groove 11 is opened on one side of the housing 1. The inner wall of the installation groove 11 is slidably connected to a baffle 6. A connecting pipe 9 is fixedly connected to the inside of the baffle 6. A filter plate 18 is arranged on the outside of the connecting pipe 9;

[0032] A clamping component is arranged inside the housing 1, and the clamping component is used to fix the baffle 6. A fixing component is arranged on the outside of the connecting pipe 9, and the fixing component is used to fix the filter plate 18.

[0033] In this embodiment: The device is placed and installed at a specified position, the rotating shaft 2 is fixedly connected to an external transmission device, and the rotating shaft 2 is used to drive the fan 10 to rotate. When maintenance of the centrifugal fan is required, the baffle 6 is installed and disassembled by means of a clamping component. When the filter plate 18 needs to be replaced, it is replaced by a fixing component. The device is convenient and fast to install, which is beneficial to cleaning the interior of the centrifugal fan, so that both the interior and the exterior of the centrifugal fan are maintained, which is beneficial to increasing its service life and is beneficial to practical application and operation.

[0034] Refer to Figure 1 and Figure 4 In a preferred embodiment, the clamping structure includes a limiting groove 12, a pull rod 5, a clamping groove 15, a limiting block 14, a return spring 13, a fixing groove 16 and a fixing block 17. The fixing grooves 16 are respectively opened at both ends of the bottom inner wall of the installation groove 11. The fixing blocks 17 are respectively fixedly connected to both ends of the bottom of the baffle 6. The fixing blocks 17 are respectively used in cooperation with the fixing grooves 16. The clamping grooves 15 are respectively opened at both ends of the top of the baffle 6. The limiting grooves 12 are respectively opened inside the casing 1 and above the installation groove 11. The limiting blocks 14 are respectively slidably connected to the inner walls of the limiting grooves 12. The pull rod 5 is fixedly connected to the inside of the limiting block 14. The bottom of the pull rod 5 extends into the installation groove 11 and is used in cooperation with the clamping groove 15. The top of the pull rod 5 extends to the top of the casing 1 and is slidably connected thereto. The return springs 13 are respectively sleeved on the outside of the pull rod 5 and between the top of the limiting block 14 and the inner wall of the limiting groove 12.

[0035] In this embodiment: When the baffle 6 needs to be disassembled, the pull rod 5 at the top is pulled up. At the same time, the bottom of the pull rod 5 is separated from the clamping groove 15, and the baffle 6 is pushed upward. At the same time, the fixing groove 16 is separated from the fixing block 17, and the baffle 6 can be taken out. When the baffle 6 is installed inside the installation groove 11, the return spring 13 and the limiting block 14 are used to make the pull rod 5 receive a downward elastic force, so that it enters the inside of the clamping groove 15, and at the same time drives it to move downward, and the fixing block 17 enters the inside of the fixing groove 16.

[0036] Refer to Figure 1 and Figure 3 In a preferred embodiment, the fixing component includes an L-shaped block 19 and a magnet 20. The L-shaped block 19 is rotatably connected to the four corners of the connecting pipe 9. The magnet 20 is fixedly connected to the outside of the filter plate 18. The magnet 20 is annular. The inner length of the L-shaped block 19 is equal to the thickness of the filter plate 18. The L-shaped block 19 is made of iron material, and the L-shaped block 19 is used in cooperation with the magnet 20.

[0037] In this embodiment: The filter plate 18 is fixed by using the L-shaped block 19, and the iron L-shaped block 19 is used in cooperation with the magnet 20 to increase the firmness of the filter plate 18 and the connecting pipe 9.

[0038] Reference Figure 1 and Figure 3 In a preferred embodiment, a gasket 8 is embedded and installed inside the baffle 6, and the gasket 8 is made of rubber material.

[0039] In this embodiment: The rubber material of the gasket 8 has softness, which is beneficial to quickly seal the outside of the casing 1, thereby preventing the centrifugal fan from leaking air and reducing its power.

[0040] Reference Figure 2 and Figure 4 In a preferred embodiment, the baffle 6 is T-shaped and the width of the bottom is equal to the width of the inner wall of the installation groove 11, and the length of the bottom of the baffle 6 is less than the length of the inner wall of the installation groove 11.

[0041] In this embodiment: The length of the bottom of the baffle 6 being less than the length of the inner wall of the installation groove 11 is beneficial for it to slide inside the installation groove 11, thus facilitating the fixing block 17 to enter the inside of the fixing groove 16.

[0042] Reference Figure 2 and Figure 4 In a preferred embodiment, air grooves 7 are formed on the outer side of the filter plate 18, and filter meshes are arranged on the inner walls of the air grooves 7.

[0043] In this embodiment: The filter meshes block dust and other sundries in the air, thus facilitating the normal operation of the centrifugal fan.

[0044] Reference Figure 1 and Figure 2 In a preferred embodiment, a fixing plate 4 is fixedly connected to the outer side of the top of the air outlet pipe 3, and holes are equidistantly formed at the four ends of the top of the fixing plate 4, and the holes are connected to the external pipeline through screws.

[0045] In this embodiment: The holes cooperate with the fixing plate 4 to fixedly connect the air outlet pipe 3 to the external pipeline, which is beneficial for the centrifugal fan to provide air flow for large equipment.

[0046] Working principle: When in use, place and install the device at the designated position, fixedly connect the rotating shaft 2 with an external transmission device, and drive the fan 10 to rotate by means of the rotating shaft 2. When maintenance of the centrifugal fan is required, pull up the pull rod 5, and at the same time, the bottom of the pull rod 5 is separated from the clamping groove 15, push the baffle 6 upward, and at the same time, the fixing groove 16 is separated from the fixing block 17, then the baffle 6 can be taken out. When installing the baffle 6 inside the installation groove 11, make the fixing block 17 at its bottom enter the inside of the fixing groove 16, and use the return spring 13 in cooperation with the limit block 14 to make the pull rod 5 receive a downward elastic force, so that it enters the inside of the clamping groove 15 to fix the baffle 6. When the filter plate 18 needs to be replaced, just rotate the L-shaped clamping block outward. The device is convenient and fast to install, which is beneficial to cleaning the inside of the centrifugal fan, so that both the inside and the outside of the centrifugal fan are maintained, which is beneficial to increasing its service life and is beneficial to actual application and operation.

[0047] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. The substitution may be the substitution of part of the structure, device, method steps, or a complete technical solution. Any equivalent substitution or change made according to the technical solution of the present invention and its inventive concept shall be covered within the protection scope of the present invention.

Claims

1. A centrifugal fan easy to maintain, comprising a casing (1), characterized in that: The inner wall of the casing (1) is rotatably connected to a rotating shaft (2), one side of the rotating shaft (2) is fixedly connected to a fan (10), one end of the rotating shaft (2) extends to the outside of the casing (1) and is fixedly connected to an external transmission device, the top of the casing (1) is fixedly connected to an air outlet pipe (3), one side of the casing (1) is provided with a mounting groove (11), the inner wall of the mounting groove (11) is slidably connected to a baffle (6), the interior of the baffle (6) is fixedly connected to a connecting pipe (9), and a filter plate (18) is provided on the outside of the connecting pipe (9); A clamping assembly is provided inside the casing (1), and the clamping assembly is used to fix the baffle (6). A fixing assembly is provided outside the connecting pipe (9), and the fixing assembly is used to fix the filter plate (18).

2. The centrifugal fan easy to maintain according to claim 1, characterized in that: The clamping assembly comprises a limiting groove (12), a pull rod (5), a clamping groove (15), a limiting block (14), a reset spring (13), a fixing groove (16) and a fixing block (17); the fixing grooves (16) are both arranged at two ends of the bottom of the inner wall of the installation groove (11); the fixing blocks (17) are both fixedly connected to two ends of the bottom of the baffle (6); the fixing blocks (17) are used in conjunction with the fixing grooves (16); the clamping grooves (15) are both arranged at two ends of the top of the baffle (6); the limiting grooves (12) are both arranged on the housing (1). The limit blocks (14) are slidably connected to the inner wall of the limit groove (12); the pull rod (5) is fixedly connected to the inside of the limit block (14); the bottom of the pull rod (5) extends to the inside of the installation groove (11) and is used in conjunction with the slot (15); the top of the pull rod (5) extends to the top of the housing (1) and is slidably connected thereto; the return spring (13) is sleeved on the outside of the pull rod (5) and is located between the top of the limit block (14) and the inner wall of the limit groove (12).

3. The centrifugal fan easy to maintain according to claim 1, characterized in that: The fixing assembly comprises an L-shaped block (19) and a magnet (20). The L-shaped block (19) is rotatably connected to the four corners of the connecting pipe (9). The magnet (20) is fixedly connected to the outer side of the filter plate (18). The magnet (20) is annular. The length of the inner side of the L-shaped block (19) is equal to the thickness of the filter plate (18). The L-shaped block (19) is made of iron. The L-shaped block (19) and the magnet (20) are used in combination.

4. The centrifugal fan easy to maintain according to claim 1, characterized in that: A sealing gasket (8) is embedded and installed inside the baffle (6), and the sealing gasket (8) is made of rubber.

5. The centrifugal fan easy to maintain according to claim 3, characterized in that: The baffle plate (6) is T-shaped and has a bottom width that is equal to the width of the inner wall of the mounting groove (11); the bottom length of the baffle plate (6) is less than the length of the inner wall of the mounting groove (11).

6. The centrifugal fan easy to maintain according to claim 1, characterized in that: An air slot (7) is provided on the outer side of the filter plate (18), and a filter screen is provided on the inner wall of the air slot (7).

7. The centrifugal fan easy to maintain according to claim 1, characterized in that: A fixing plate (4) is fixedly connected to the outer side of the top of the air outlet pipe (3), and holes are equidistantly provided at four ends of the top of the fixing plate (4), and the holes are connected to external pipes via screws.

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