Sealing device for fan

Abstract

The utility model relates to the technical field of fan accessories, and provides a sealing device for a fan, which comprises a fixing frame and a mounting seat, a connecting cylinder is arranged on one side of the fixing frame, and a main shaft, a rotating shaft and two symmetrically arranged rotating rods are respectively and rotatably mounted in the fixing frame; one end of the main shaft is fixedly connected with a fan body through a screw, the top of the rotating shaft is fixedly connected with a rotating disc, and through arrangement of the rotating disc, the rotating shaft and other structures, the rotating disc is rotated to drive the rotating shaft in the fixing frame to rotate, drive two rotating rods in the fixing frame to rotate and then drive two clamping blocks in the fixing frame to slide; according to the technical scheme, the problems that in the prior art, later maintenance and replacement are not convenient, and mounting and dismounting are not convenient are solved through the technical scheme that in the prior art, later maintenance and replacement are not convenient, and mounting and dismounting are not convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of fan accessories, in particular to a sealing device for a fan. Background Art

[0002] At present, sealing devices for fans refer to devices used to prevent gas or liquid leakage inside the fan and to prevent external impurities from entering the fan. These sealing devices are usually composed of springs, sealing rings, conical surfaces and other components, and achieve sealing effects through mechanical force and the elastic force of elastic elements.

[0003] The prior art discloses a sealing device for a fan with the authorization announcement number CN211737531U. The patent includes a fan housing, a main shaft, a sealing seat, a mounting groove, a sealing sleeve and an inner sleeve. The main shaft is located on the right side of the fan housing, and a sealing seat is mounted on the surface. A stepped mounting groove is arranged on the right side of the sealing seat for fixing the sealing sleeve. The sealing sleeve is fixedly sleeved in the mounting groove. A through hole is opened at the center of the sealing sleeve for contacting and connecting with the main shaft. The inner sleeve is contacted and connected on the right side of the sealing sleeve. A symmetrical slot is opened on the right side of the inner sleeve. A connecting portion is arranged on the right side of the inner sleeve. The surface sealing sleeve is connected with an outer sleeve, and a positioning hole is opened on the right side of the outer sleeve, which is connected with a positioning screw through a thread. The inner sleeve and outer sleeve set by the patent are not only conducive to improving the sealing stability of the sealing device, but also easy to disassemble and assemble, thereby facilitating the later maintenance and replacement of the sealing seat. In addition, the set sealing sleeve also has the function of filtering harmful gas particles, thereby improving the safety of the sealing device. In short, the sealing device used in the patent has a simple structure, is easy to manufacture and install, is safe and reliable to use, can maintain good sealing performance and service life in harsh environments, and is suitable for various fan products.

[0004] However, when this patent is in use, the parts inside the connecting tube need regular maintenance and replacement due to long-term use, and before use, this patent needs to use multiple screws to rotate so that the connection between the mounting base and the fixing frame is firm. Utility Model Content

[0005] The utility model provides a sealing device for a fan, which solves the problems in the related art of being inconvenient for later maintenance and replacement and inconvenient for installation and disassembly.

[0006] The technical solution of the utility model is as follows: a sealing device for a fan, comprising a fixing frame and a mounting seat, a connecting cylinder is provided on one side of the fixing frame, a main shaft, a rotating shaft and two symmetrically arranged rotating rods are rotatably installed inside the fixing frame, one end of the main shaft is fixedly connected to the fan body by a screw, a turntable is fixedly connected to the top of the rotating shaft, two symmetrically arranged fixing blocks are fixedly connected to the outer circumference of the rotating shaft, ropes are fixedly connected to the two fixing blocks, rollers are fixedly sleeved on the outer circumferences of the two rotating rods, the ropes are passed around the outer circumferences of the rollers, two symmetrically arranged clamping blocks are slidably assembled inside the fixing frame, one end of the rope is fixedly connected to one side of the clamping block, a sealing seat is fixedly connected to one side of the mounting seat, and a sealing assembly is provided inside the sealing seat.

[0007] Preferably, the other side of the fixing frame is fixedly connected with two symmetrically arranged protrusions by screws, and a screw and a lead screw are rotatably installed inside the mounting seat respectively, a rotating wheel is fixedly connected to one end of the screw, a synchronous belt is commonly installed on the outer circumference of the screw and the lead screw, and a threaded block is threadedly sleeved on the outer circumference of the lead screw and the screw, and a clamping block is fixedly connected to one side of the threaded block.

[0008] Preferably, the sealing assembly includes a sealing sleeve, an inner sleeve and an outer sleeve, one side of the outer sleeve is fixedly connected to two symmetrically arranged connecting blocks, the sealing seat and the inner part of the outer sleeve are commonly threadedly installed with a positioning screw, the inner part of the inner sleeve is provided with two symmetrically arranged connecting grooves, the two connecting blocks are respectively slidably connected to the inside of the two connecting grooves, the outer sleeve and the sealing seat are each provided with two symmetrically arranged thread grooves 1, the two positioning screws are respectively threadedly connected to the inside of the four thread grooves 1, and the thread groove 1 is used for the rotation of the positioning screw.

[0009] Preferably, a rotation groove and a hole groove are respectively opened inside the fixing frame, the main shaft is rotatably installed inside the rotation groove, the rotating shaft is rotatably installed inside the hole groove, a return spring is commonly connected between one side of the fixing block and the inner wall of the fixing frame, and the hole groove is used for the rotation of the rotating shaft.

[0010] Preferably, the interior of the fixing frame is provided with two symmetrically arranged rotating grooves and two symmetrically arranged sliding grooves, the two rotating rods are rotatably installed in the interior of the two rotating grooves, the two clamping blocks are slidably connected in the interior of the two sliding grooves, an extrusion spring is commonly connected between one side of the clamping block and the inner wall of the sliding groove, and the sliding groove is used for the sliding of the clamping block.

[0011] Preferably, the connecting tube is provided with two symmetrically arranged clamping grooves, and the two clamping blocks are respectively slidably connected inside the two clamping grooves, and the clamping grooves are used for clamping the clamping blocks.

[0012] Preferably, the interior of the mounting seat is provided with two symmetrically arranged positioning grooves and two symmetrically arranged circular grooves, the screw and the lead screw are rotatably installed in the two circular grooves, and the two protrusions are slidably connected in the two positioning grooves, and the positioning grooves are used for the protrusions to enter.

[0013] Preferably, a second thread groove is provided inside the two threaded blocks, and the screw rod and the lead screw respectively pass through the inside of the two thread grooves. A slot is provided on one side of the protrusion, and the block is slidably connected inside the slot, and the slot is used for the block to be inserted.

[0014] The working principle and beneficial effects of the utility model are:

[0015] 1. In the utility model, by setting structures such as a turntable and a rotating shaft, the turntable is rotated to drive the rotating shaft inside the fixed frame to rotate, which drives the two rotating rods inside the fixed frame to rotate, thereby driving the two clamping blocks inside the fixed frame to slide and be pulled out of the inside of the clamping groove, and then the staff can remove the connecting tube and the components on the left, so that they can carry out later maintenance and replacement of the fan, etc.

[0016] 2. In the utility model, by setting up structures such as a rotating wheel and a synchronous belt, the rotating wheel is rotated to drive the screw to rotate, which in turn drives the synchronous belt to rotate, which in turn drives the screw to rotate, and then drives the two blocks to move, and move into the interior of the card slot, thereby achieving the effect of convenient installation and disassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the interior of the connecting tube of the utility model;

[0020] Figure 3 It is a cross-sectional view of the fixing frame of the utility model;

[0021] Figure 4 This is a rear view of the fixing frame of the utility model;

[0022] Figure 5 It is a cross-sectional view of the mounting seat of the utility model;

[0023] Figure 6It is an enlarged schematic diagram of the reference number A of the present utility model;

[0024] Figure 7 This is an internal cross-sectional view of the sealing seat of the utility model.

[0025] In the figure: 1. fixing frame; 2. connecting tube; 3. mounting seat; 4. sealing seat; 5. main shaft; 6. fan body; 7. turntable; 8. rotating shaft; 9. rotary spring; 10. fixing block; 11. rope; 12. rotating rod; 13. roller; 14. clamping block; 15. extrusion spring; 16. bump; 17. rotating wheel; 18. screw; 19. synchronous belt; 20. lead screw; 21. threaded block; 22. clamping block; 23. sealing sleeve; 24. inner sleeve; 25. outer sleeve; 26. connecting block; 27. positioning screw. DETAILED DESCRIPTION

[0026] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] Example 1

[0028] like Figure 1-Figure 7 As shown, this embodiment proposes a sealing device for a fan, including a fixing frame 1 and a mounting seat 3, a connecting tube 2 is arranged on one side of the fixing frame 1, a main shaft 5, a rotating shaft 8 and two symmetrically arranged rotating rods 12 are rotatably installed inside the fixing frame 1, one end of the main shaft 5 is fixedly connected to a fan body 6 by a screw, a rotating disk 7 is fixedly connected to the top of the rotating shaft 8, two symmetrically arranged fixing blocks 10 are fixedly connected to the outer circumference of the rotating shaft 8, ropes 11 are fixedly connected to the two fixing blocks 10, rollers 13 are fixedly sleeved on the outer circumferences of the two rotating rods 12, the ropes 11 are passed around the outer circumferences of the rollers 13, and the fixing frame 1 The internal sliding assembly is equipped with two symmetrically arranged clamping blocks 14, one end of the rope 11 is fixedly connected to one side of the clamping block 14, one side of the mounting seat 3 is fixedly connected to a sealing seat 4, and a sealing assembly is arranged inside the sealing seat 4. By setting the turntable 7, the rotating shaft 8 and other structures, the turntable 7 is rotated to drive the rotating shaft 8 inside the fixed frame 1 to rotate, so as to drive the two rotating rods 12 inside the fixed frame 1 to rotate, thereby driving the two clamping blocks 14 inside the fixed frame 1 to slide and be pulled out of the inside of the clamping groove, and then the staff can remove the connecting tube 2 and the components on the left, so that they can carry out later maintenance and replacement of the fan, etc.

[0029] like Figure 7As shown, the sealing assembly includes a sealing sleeve 23, an inner sleeve 24 and an outer sleeve 25, one side of the outer sleeve 25 is fixedly connected with two symmetrically arranged connecting blocks 26, the interior of the sealing seat 4 and the outer sleeve 25 are commonly threadedly installed with positioning screws 27, the interior of the inner sleeve 24 is provided with two symmetrically arranged connecting grooves, the two connecting blocks 26 are respectively slidably connected to the inside of the two connecting grooves, the interior of the outer sleeve 25 and the sealing seat 4 are provided with two symmetrically arranged threaded grooves, and the two positioning screws 27 are respectively threadedly connected to the inside of the four thread grooves.

[0030] like Figure 1-Figure 3 As shown, a rotation groove and a hole groove are respectively opened inside the fixing frame 1, the main shaft 5 is rotatably installed inside the rotation groove, the rotating shaft 8 is rotatably installed inside the hole groove, and a rotation spring 9 is commonly connected between one side of the fixing block 10 and the inner wall of the fixing frame 1.

[0031] like Figure 3 As shown, two symmetrically arranged rotating grooves and two symmetrically arranged sliding grooves are respectively provided inside the fixing frame 1, two rotating rods 12 are respectively rotatably installed inside the two rotating grooves, two clamping blocks 14 are respectively slidably connected inside the two sliding grooves, and a compression spring 15 is commonly connected between one side of the clamping block 14 and the inner wall of the sliding groove.

[0032] like Figure 3 As shown, the connecting tube 2 is provided with two symmetrically arranged clamping grooves, and the two clamping blocks 14 are respectively slidably connected inside the two clamping grooves.

[0033] The specific implementation principle of this embodiment is as follows: when the device is in use, the sealing sleeve 23 and the inner sleeve 24 are first inserted into the outer peripheral surface of the main shaft 5 in sequence, and the outer sleeve 25 is sealed and connected to one side of the inner sleeve 24, and the two connecting blocks 26 are inserted into the inside of the connecting groove, and then the positioning screws 27 are rotated to fix it and ensure the internal seal. Then, when in use, if the parts inside the connecting tube 2 need to be replaced or repaired, the turntable 7 is rotated, and the rotation of the turntable 7 drives the rotating shaft 8 to rotate, and the rotation of the rotating shaft 8 drives the rotating shaft 8 to rotate. The two fixing blocks 10 rotate, which in turn drives the two ropes 11 to be pulled, and drives the rotating rod 12 and the roller 13 to rotate. As the rope 11 is pulled, the clamping block 14 is pulled, so that the clamping block 14 is pulled out of the inside of the clamping groove. At this time, the staff can remove the connecting tube 2 and the like, and then they can carry out maintenance or replacement. After the maintenance or replacement is completed, the connecting tube 2 is inserted into the inside of the fixing frame 1, and then the turntable 7 is reversed to drive the clamping block 14 into the inside of the clamping groove for fixing, thereby achieving the effect of facilitating later maintenance and replacement.

[0034] Example 2

[0035] like Figure 4-Figure 5As shown, this embodiment also introduces a sealing device for a fan, which adds the following structure on the basis of the first embodiment: two symmetrically arranged protrusions 16 are fixedly connected to the other side of the fixing frame 1 by screws, and a screw 18 and a lead screw 20 are rotatably installed inside the mounting seat 3, one end of the screw 18 is fixedly connected to a rotating wheel 17, and a synchronous belt 19 is commonly installed on the outer circumference of the screw 18 and the lead screw 20. A threaded block 21 is threadedly sleeved on the outer circumference of the lead screw 20 and the screw 18, and a clamping block 22 is fixedly connected to one side of the threaded block 21. Through the arrangement of the rotating wheel 17, the synchronous belt 19 and other structures, the rotating wheel 17 is rotated to drive the screw 18 to rotate, thereby driving the synchronous belt 19 to rotate, thereby driving the lead screw 20 to rotate, and then driving the two clamping blocks 22 to move, and move into the interior of the card slot, thereby achieving the effect of convenient installation and disassembly.

[0036] like Figure 4-Figure 5 As shown, the mounting seat 3 is provided with two symmetrically arranged positioning grooves and two symmetrically arranged circular grooves, the screw 18 and the lead screw 20 are rotatably installed in the two circular grooves, and the two protrusions 16 are slidably connected in the two positioning grooves.

[0037] like Figure 5 As shown, the two thread blocks 21 are provided with thread grooves 2 inside, and the screw rod 18 and the lead screw 20 pass through the two thread grooves 2 inside respectively. A clamping groove is provided on one side of the protrusion 16, and the clamping block 22 is slidably connected inside the clamping groove.

[0038] The specific implementation principle of this embodiment is as follows: when the device is in use, it is necessary to fix the mounting seat 3 and the fixing frame 1, rotate the rotating wheel 17, so that it drives the screw 18 to rotate, and then drives the screw 20 to rotate through the setting of the synchronous belt 19, so that it drives the two threaded blocks 21 to move, and drives the two clamping blocks 22 to move into the interior of the clamping slot to fix it, thereby achieving the effect of convenient installation and disassembly.

[0039] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A sealing device for a fan, comprising a fixing frame (1) and a mounting seat (3), characterized in that: A connecting tube (2) is provided on one side of the fixing frame (1), and a main shaft (5), a rotating shaft (8) and two symmetrically arranged rotating rods (12) are rotatably mounted inside the fixing frame (1), one end of the main shaft (5) is fixedly connected to a fan body (6) by means of screws, a rotating disk (7) is fixedly connected to the top of the rotating shaft (8), two symmetrically arranged fixing blocks (10) are fixedly connected to the outer circumference of the rotating shaft (8), ropes (11) are fixedly connected to the two fixing blocks (10), rollers (13) are fixedly sleeved on the outer circumference of the two rotating rods (12), and the ropes (11) pass around the outer circumference of the rollers (13), and two symmetrically arranged clamping blocks (14) are slidably mounted inside the fixing frame (1), one end of the rope (11) is fixedly connected to one side of the clamping block (14), and a sealing seat (4) is fixedly connected to one side of the mounting seat (3), and a sealing assembly is arranged inside the sealing seat (4).

2. A sealing device for a fan according to claim 1, characterized in that: The other side of the fixing frame (1) is fixedly connected to two symmetrically arranged protrusions (16) by means of screws, and a screw rod (18) and a lead screw (20) are rotatably mounted inside the mounting seat (3), one end of the screw rod (18) is fixedly connected to a rotating wheel (17), a synchronous belt (19) is commonly mounted on the outer circumferences of the screw rod (18) and the lead screw (20), a threaded block (21) is threadedly sleeved on the outer circumferences of the lead screw (20) and the screw rod (18), and a clamping block (22) is fixedly connected to one side of the threaded block (21).

3. A sealing device for a fan according to claim 1, characterized in that: The sealing assembly comprises a sealing sleeve (23), an inner sleeve (24) and an outer sleeve (25); one side of the outer sleeve (25) is fixedly connected with two symmetrically arranged connecting blocks (26); the sealing seat (4) and the outer sleeve (25) are internally threadedly installed with positioning screws (27); the inner sleeve (24) has two symmetrically arranged connecting grooves, the two connecting blocks (26) are respectively slidably connected inside the two connecting grooves; the outer sleeve (25) and the sealing seat (4) are internally provided with two symmetrically arranged thread grooves, and the two positioning screws (27) are respectively threadedly connected inside the four thread grooves.

4. A sealing device for a fan according to claim 1, characterized in that: A rotation groove and a hole groove are respectively provided inside the fixing frame (1); the main shaft (5) is rotatably mounted inside the rotation groove; the rotation shaft (8) is rotatably mounted inside the hole groove; and a rotation spring (9) is commonly connected between one side of the fixing block (10) and the inner wall of the fixing frame (1).

5. A sealing device for a fan according to claim 1, characterized in that: The fixing frame (1) is provided with two symmetrically arranged rotating grooves and two symmetrically arranged sliding grooves, respectively; the two rotating rods (12) are rotatably mounted in the two rotating grooves, respectively; the two clamping blocks (14) are slidably connected in the two sliding grooves, respectively; and a compression spring (15) is commonly connected between one side of the clamping block (14) and the inner wall of the sliding groove.

6. A sealing device for a fan according to claim 1, characterized in that: The connecting tube (2) is provided with two symmetrically arranged clamping grooves, and the two clamping blocks (14) are respectively slidably connected inside the two clamping grooves.

7. A sealing device for a fan according to claim 2, characterized in that: The mounting seat (3) is provided with two symmetrically arranged positioning grooves and two symmetrically arranged circular grooves, the screw rod (18) and the lead screw (20) are rotatably mounted in the two circular grooves, and the two protrusions (16) are slidably connected in the two positioning grooves.

8. A sealing device for a fan according to claim 2, characterized in that: The two threaded blocks (21) are each provided with a second thread groove, the screw rod (18) and the lead screw (20) respectively pass through the two threaded grooves, a clamping groove is provided on one side of the protrusion (16), and the clamping block (22) is slidably connected inside the clamping groove.

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