Centrifugal fan convenient to clean

Abstract

The utility model relates to the technical field of centrifugal fans, and discloses a centrifugal fan convenient to clean, which comprises a sliding table, one side of the sliding table is fixedly connected with a bearing seat, the upper side of the bearing seat is fixedly connected with a fan box body, the inner side of the fan box body is provided with a centrifugal impeller, and one side of the fan box body is provided with a sealing groove. A sealing ring is arranged on the inner side of the sealing groove, a push plate is fixedly connected to the side, away from the fan box body, of the sealing ring, and the side, close to the centrifugal impeller, of the push plate is rotationally connected with the centrifugal impeller. And the motor and the centrifugal impeller are drawn out of the fan box body at the same time, and the exposed centrifugal impeller is convenient for workers to clean dust on the surface of the impeller.

Description

Technical Field

[0001] This utility model relates to the field of centrifugal fan technology, and in particular to a centrifugal fan that is easy to clean. Background Technology

[0002] After prolonged use, dust often accumulates on the internal impeller of a centrifugal fan. If not cleaned in time, this can affect the fan's blowing performance. Currently, common centrifugal fans mainly consist of three core components: the casing, the centrifugal impeller, and the motor. The centrifugal impeller is installed inside the casing, while the motor is installed outside. The motor output is connected to the internal centrifugal impeller. When the motor starts, the centrifugal impeller can be used to throw air out from the side of the casing. However, after prolonged use, when it is necessary to clean the centrifugal impeller, it is necessary to remove the centrifugal impeller from the casing. Since the motor output and the centrifugal impeller are locked together, the structure is quite complex. Therefore, this method of cleaning by disassembling the impeller is difficult and inconvenient in practice.

[0003] For example, Chinese utility model patent CN220378571U discloses a centrifugal fan that is easy to clean, including a housing and an impeller. The housing sidewalls are respectively provided with an air inlet and an air outlet pipe, and a drive motor is fixedly connected to the housing sidewalls. Although this solution can easily release the position of the impeller, the filter screen and the outer casing still need to be removed before the impeller can be taken out. The cleaning action is too large and the cleaning cost is high. Based on this, a centrifugal fan that is easy to clean is proposed. Utility Model Content

[0004] To address the technical problem of easy cleaning of centrifugal fans, this utility model provides a centrifugal fan that is easy to clean.

[0005] This utility model is achieved using the following technical solution: a centrifugal fan that is easy to clean, including a slide table, a support seat fixedly connected to one side of the slide table, a fan housing fixedly connected to the upper side of the support seat, a centrifugal impeller arranged inside the fan housing, a sealing groove opened on one side of the fan housing, a sealing ring arranged inside the sealing groove, a push plate fixedly connected to the side of the sealing ring away from the fan housing, the side of the push plate close to the centrifugal impeller being rotatably connected to the centrifugal impeller, an impeller insertion mechanism for pulling the centrifugal impeller out of the fan housing being provided on the upper side of the slide table, and an installation and fixing mechanism being provided on the lower side of the slide table.

[0006] As a further improvement to the above solution, the impeller insertion mechanism includes a dovetail groove opened on the upper side of the slide table, a dovetail slider slidably connected to the inner side of the dovetail groove, a fixing plate fixedly connected to the upper side of the dovetail slider, the fixing plate being fixedly connected to the lower side of the push plate, an impeller drive mechanism being provided on the upper side of the dovetail slider, and a screw drive mechanism being provided on one side of the slide table to cause the dovetail slider to reciprocate back and forth along the dovetail groove.

[0007] As a further improvement to the above solution, the impeller drive mechanism includes a motor fixedly connected to the upper side of the dovetail slider, and the output end of the motor passes through the push plate and is fixedly connected to one side of the centrifugal impeller.

[0008] As a further improvement to the above solution, the screw drive mechanism includes a threaded rod rotatably connected to one side of the slide table, one end of the threaded rod being threadedly connected to the dovetail slider, and a handwheel being fixedly connected to the end of the threaded rod away from the slide table.

[0009] As a further improvement to the above solution, the upper side of the dovetail slider is threaded with a positioning bolt.

[0010] As a further improvement to the above solution, the mounting and fixing mechanism includes a base that is fixedly connected to the lower side of the slide.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] 1. This utility model uses a handwheel to rotate a threaded rod, which in turn pushes the dovetail slider out of the dovetail groove, and simultaneously pulls the motor and centrifugal impeller out of the fan housing. The exposed centrifugal impeller is easy for workers to clean the dust on its surface.

[0013] 2. This utility model achieves rapid assembly of the motor, centrifugal impeller, and fan housing by pushing the push plate, sealing ring, and sealing groove with the threaded rod. Then, it is fixed by positioning bolts, thus realizing the assembly of the centrifugal fan. It has the advantages of convenient production and assembly and simple maintenance. Attached Figure Description

[0014] Figure 1 A schematic diagram of the overall structure of a centrifugal fan that is easy to clean, provided by this utility model;

[0015] Figure 2 for Figure 1 Side view;

[0016] Figure 3 for Figure 1 Top view.

[0017] Explanation of key symbols:

[0018] 1. Base; 2. Slide table; 3. Load-bearing seat; 4. Fixing plate; 5. Positioning bolt; 6. Motor; 7. Push plate; 8. Sealing ring; 9. Fan housing; 10. Handwheel; 11. Centrifugal impeller; 12. Threaded rod; 13. Dovetail slider; 14. Dovetail groove; 15. Sealing groove. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0020] Example:

[0021] Please combine Figure 1 - Figure 3 This embodiment of a centrifugal fan for easy cleaning includes a slide table 2. A support base 3 is fixedly connected to one side of the slide table 2. A fan housing 9 is fixedly connected to the upper side of the support base 3. The fan housing 9 has a circular hollow structure. An air inlet is provided on one side of the fan housing 9, and an air outlet is provided on the upper side of the fan housing 9. A centrifugal impeller 11 is provided inside the fan housing 9. A sealing groove 15 is provided on one side of the fan housing 9. The sealing groove 15 is an annular groove, and a sealing ring 8 is provided inside the sealing groove 15. The ring is made of industrial composite rubber and has excellent toughness. When it is connected to the sealing groove 15, the sealing ring 8 can be deformed under the squeezing action of the threaded rod 12 pushing to one side to achieve a seal. The side of the sealing ring 8 away from the fan housing 9 is fixedly connected to the push plate 7. The side of the push plate 7 close to the centrifugal impeller 11 is rotatably connected to the centrifugal impeller 11. The upper side of the slide table 2 is provided with an impeller insertion mechanism that allows the centrifugal impeller 11 to be pulled out from inside the fan housing 9. The lower side of the slide table 2 is provided with an installation and fixing mechanism.

[0022] Through the above technical solution, the centrifugal impeller 11 can be pulled out or put into the fan housing 9 by the movable push plate 7, and the sealing performance of the entire fan housing 9 can be guaranteed by the sealing ring 8 and the sealing groove 15.

[0023] Please combine Figure 3 As shown, the impeller insertion mechanism includes a dovetail groove 14 opened on the upper side of the slide table 2. A dovetail slider 13 is slidably connected to the inner side of the dovetail groove 14. A fixing plate 4 is fixedly connected to the upper side of the dovetail slider 13. The fixing plate 4 is fixedly connected to the lower side of the push plate 7. An impeller drive mechanism is provided on the upper side of the dovetail slider 13. A screw drive mechanism is provided on one side of the slide table 2 to make the dovetail slider 13 move back and forth along the dovetail groove 14.

[0024] Please combine Figure 2As shown, the impeller drive mechanism includes a motor 6 fixedly connected to the upper side of the dovetail slider 13, and the output end of the motor 6 passes through the push plate 7 and is fixedly connected to one side of the centrifugal impeller 11.

[0025] With the above technical solution, the motor 6 is set on one side of the push plate 7, and the lower side of the motor 6 is fixedly connected to the slide table 2. When the slide table 2 is moved, the centrifugal impeller 11 and the motor 6 can be moved as a whole.

[0026] Please combine Figure 2 As shown, the screw drive mechanism includes a threaded rod 12 rotatably connected to one side of the slide table 2. One end of the threaded rod 12 is threadedly connected to the dovetail slider 13. A handwheel 10 is fixedly connected to the end of the threaded rod 12 away from the slide table 2. A positioning bolt 5 is threadedly connected to the upper side of the dovetail slider 13. The mounting and fixing mechanism includes a base 1 fixedly connected to the lower side of the slide table 2. By rotating the positioning bolt 5, the lower end of the positioning bolt 5 abuts against the inner side of the dovetail groove 14. At this time, the dovetail slider 13 can achieve positioning and fixing with the slide table 2.

[0027] The implementation principle of a centrifugal fan that is easy to clean in this embodiment is as follows: When it is necessary to clean the dust on the centrifugal impeller 11, first rotate the positioning bolt 5 on the slide 2 to make the slide 2 in a non-positioning state, then manually rotate the handwheel 10 on one side of the slide 2, and then drive the threaded rod 12 to rotate. At this time, the dovetail slider 13 can be pushed to move outward along the dovetail groove 14. At this time, the push plate 7 drives the sealing ring 8 to be pulled out from the sealing groove 15, and finally until the motor 6 and the centrifugal impeller 11 are moved out of the fan box 9.

[0028] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A centrifugal fan for easy cleaning comprising a sliding base (2), characterized in that, One side of the sliding table (2) is fixedly connected with a load-bearing seat (3), the upper side of the load-bearing seat (3) is fixedly connected with a fan box (9), the inner side of the fan box (9) is provided with a centrifugal impeller (11), one side of the fan box (9) is provided with a sealing groove (15), the inner side of the sealing groove (15) is provided with a sealing ring (8), the side of the sealing ring (8) away from the fan box (9) is fixedly connected with a push plate (7), the side of the push plate (7) close to the centrifugal impeller (11) is rotatably connected with the centrifugal impeller (11), the upper side of the sliding table (2) is provided with an impeller inserting mechanism for pulling out the centrifugal impeller (11) from the inside of the fan box (9), and the lower side of the sliding table (2) is provided with a mounting and fixing mechanism.

2. A centrifugal fan for easy cleaning as defined in claim 1, wherein The impeller inserting mechanism comprises a dovetail sliding groove (14) opened on the upper side of the sliding table (2), the inner side of the dovetail sliding groove (14) is slidably connected with a dovetail sliding block (13), the upper side of the dovetail sliding block (13) is fixedly connected with a fixed plate (4), the fixed plate (4) is fixedly connected with the lower side of the push plate (7), the upper side of the dovetail sliding block (13) is provided with an impeller driving mechanism, and one side of the sliding table (2) is provided with a screw rod driving mechanism for reciprocatingly moving the dovetail sliding block (13) along the dovetail sliding groove (14).

3. A centrifugal fan for easy cleaning as defined in claim 2, wherein The impeller driving mechanism comprises a motor (6) fixedly connected with the upper side of the dovetail sliding block (13), and the output end of the motor (6) penetrates through the push plate (7) and is fixedly connected with one side of the centrifugal impeller (11).

4. A self-cleaning centrifugal fan as claimed in claim 2, characterized in that The screw rod driving mechanism comprises a threaded rod (12) rotatably connected with one side of the sliding table (2), one end of the threaded rod (12) is threadedly sleeved with the dovetail sliding block (13), and the end of the threaded rod (12) away from the sliding table (2) is fixedly connected with a hand wheel (10).

5. A self-cleaning centrifugal fan as claimed in claim 4, characterized in that The upper side of the dovetail sliding block (13) is threadedly sleeved with a positioning bolt (5).

6. A self-cleaning centrifugal fan as claimed in claim 1, characterized in that The mounting and fixing mechanism comprises a base (1) fixedly connected with the lower side of the sliding table (2).

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