Centrifugal fan bearing seat sealing device

Abstract

The utility model relates to the technical field of bearing seats, and discloses a centrifugal fan bearing seat sealing device which comprises a lower fixing frame and an upper fixing frame, the upper end of the lower fixing frame is fixedly connected with two sealing plates distributed in a mirror image mode, and the bottom end of the upper fixing frame is provided with two inserting grooves distributed in a mirror image mode. Second mounting grooves are formed in one sides of the four mounting rings correspondingly, and skirt type sealing rings are fixedly connected to the interiors of the four second mounting grooves in pairs correspondingly. According to the centrifugal fan bearing seat sealing device, through the arrangement of the sealing plate, the inserting groove and the skirt type sealing ring, a multi-sealing structure is achieved, and through the arrangement of the sealing plate and the inserting groove, when the sealing plate is inserted into the inserting groove, a rigid sealing barrier is provided, external dust and other pollutants are prevented from entering the bearing seat, and the service life of the bearing seat is prolonged. The two skirt-type sealing rings are embedded into the second mounting grooves to form a flexible sealing layer, lubricating oil can be prevented from leaking, the skirt-type sealing rings can be attached to the surface of the shaft, and the dynamic sealing requirement under high-speed operation is met.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of bearing seats, in particular to a centrifugal fan bearing seat sealing device. BACKGROUND

[0002] Since one bearing can be selected with different bearing seats, and one bearing seat can be selected with different types of bearings, a large number of bearing seats are brought, and bearing seat quick and easy optimization is recorded, and many foreign large bearing companies also have their own bearing seat catalogs, but the same bearing seat model in different company samples is not completely the same, and different application occasions of standard bearing seats can select bearing seats made of different materials, such as gray cast iron, ductile cast iron and cast steel, stainless steel and special plastic bearing seats.

[0003] However, the existing bearing seat sealing device is prone to lubricating oil leakage or entry of external dust, moisture and other pollutants into the bearing after long-time operation, which causes the bearing to be severely worn and affects the service life of the equipment. CONTENT OF THE UTILITY MODEL

[0004] In view of the defects of the prior art, the application provides a centrifugal fan bearing seat sealing device, which has the advantages of improving the sealing performance of the bearing seat, and solves the problem that the existing bearing seat sealing device is prone to lubricating oil leakage or entry of external dust, moisture and other pollutants into the bearing after long-time operation, which causes the bearing to be severely worn and affects the service life of the equipment.

[0005] To achieve the above purpose, the application provides the following technical scheme: a centrifugal fan bearing seat sealing device, comprising a lower fixed frame and an upper fixed frame, the lower fixed frame and the upper fixed frame are internally provided with a first installation slot, the upper end of the lower fixed frame is fixedly connected with two sealing plates arranged in mirror image, the bottom end of the upper fixed frame is provided with two insertion slots arranged in mirror image, the bottom end of the upper fixed frame is fixedly connected with four positioning columns arranged in a rectangular array, the upper end of the lower fixed frame is fixedly connected with four positioning holes arranged in a rectangular array, the inside of the lower fixed frame and the upper fixed frame is fixedly connected with installation rings on both sides, the installation rings are internally provided with a second installation slot on one side, and the second installation slots are internally fixedly connected with skirt type sealing rings in pairs.

[0006] Through the above scheme, through the setting of the sealing plate, the slot and the skirt type sealing ring, a multiple sealing structure is realized. The sealing plate and the slot provide a rigid sealing barrier when the sealing plate is inserted into the slot, preventing external dust, moisture and other pollutants from entering the bearing seat. The two skirt type sealing rings are embedded in the second mounting slot to form a flexible sealing layer that can block the leakage of lubricating oil. The skirt type sealing ring can fit on the surface of the shaft to meet the dynamic sealing requirements under high speed operation. The sealing plate and the slot form the first resealing to block the influence of larger particle pollutants and the external environment. The skirt type sealing ring serves as the second resealing to prevent the leakage of lubricating oil. The rectangular array design of the four positioning columns and the positioning holes ensures the quick alignment of the upper and lower fixed frames, avoiding sealing failure caused by assembly errors.

[0007] Further, the lower fixed frame and the upper fixed frame are provided with oil storage grooves on both sides.

[0008] Through the above scheme, the oil storage groove is used to store lubricating grease or lubricating oil, which can continuously lubricate the bearing, reduce friction and wear, and prolong the service life of the equipment.

[0009] Further, the lower fixed frame and the upper fixed frame are provided with oil storage grooves on both sides.

[0010] Through the above scheme, the support ring is fixedly connected to the upper fixed frame 1 and the lower fixed frame 2 on both sides, and the support ring provides an installation position for the limiting device.

[0011] Further, two bearings are fixedly arranged in the first mounting slot, and a main shaft is inserted into the bearing.

[0012] Through the above scheme, the first mounting slot is used to fix the bearing to ensure the stability of the bearing during high speed operation. The bearing is a core component for supporting the main shaft, which can reduce friction and withstand radial and axial loads. Two mirror image distributed positioning rings are arranged on the outer wall of the main shaft to limit the axial displacement of the main shaft and prevent it from moving during high speed operation, ensuring stable operation.

[0013] Further, two positioning rings are rotatably arranged in the third mounting slot.

[0014] Through the above scheme, the positioning ring is rotatably arranged in the third mounting slot to limit the axial displacement of the main shaft and form an additional sealing layer to reduce dust entry.

[0015] Further, two sealing strips are fixedly arranged on the outer wall of the sealing plate.

[0016] Through the above scheme, the sealing strip is fixed on the outer wall of the sealing plate, can fill the gap between the sealing plate and the slot, further enhance the sealing effect, prevent the lubricating oil leakage and the external pollutants into the bearing seat inside.

[0017] Further, the lower fixing frame is internally provided with four threaded holes arranged in a rectangular array, the upper fixing frame is internally slidably provided with four fixing bolts arranged in a mirror image, and the four fixing bolts are threadedly arranged in the threaded holes away from the upper fixing frame.

[0018] Through the above scheme, the bottom end is fixedly connected with the mounting plate, which is used for fixing or mounting the whole structure, and the four fixing bolts threadedly connect the upper fixing frame and the lower fixing frame together.

[0019] Further, the two sealing plates are slidably arranged in the slot, and the four positioning columns are slidably arranged in the positioning holes.

[0020] Through the above scheme, the two sealing plates are slidably arranged in the slot, which is used for limiting the external dust from entering the bearing seat, and the positioning column is slidably arranged in the positioning hole, which can limit the position of the sealing plate, ensuring the sealing effect and the installation precision.

[0021] Compared with the prior art, the technical scheme of the present application has the following beneficial effects:

[0022] The sealing device for the bearing seat of the centrifugal fan realizes a multiple sealing structure through the arrangement of the sealing plate, the slot and the skirt type sealing ring. When the sealing plate is inserted into the slot, a rigid sealing barrier is provided to prevent external dust, moisture and other pollutants from entering the bearing seat. The two skirt type sealing rings are embedded in the second mounting groove to form a flexible sealing layer, which can block the leakage of lubricating oil. The skirt type sealing ring can be attached to the surface of the shaft to meet the dynamic sealing requirements under high-speed operation. The cooperation of the sealing plate and the slot forms the first sealing, which blocks the influence of larger particle pollutants and the external environment. The skirt type sealing ring serves as the second sealing to prevent the leakage of lubricating oil. The rectangular array design of the four positioning columns and the positioning holes ensures the quick alignment of the upper fixing frame and the lower fixing frame, avoiding the sealing failure caused by assembly errors. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a whole structure schematic view of the structure of the present application;

[0024] Figure 2 It is a lower fixing frame structure schematic view of the structure of the present application;

[0025] Figure 3 It is an upper fixing frame structure schematic view of the structure of the present application;

[0026] Figure 4 The main shaft installation structure diagram of the structure of the present application

[0027] Figure 5 The enlarged view of A in Figure 2

[0028] In the figure:

[0029] 1, lower fixed frame; 2, upper fixed frame; 3, first installation slot; 4, sealing plate; 5, insertion slot; 6, positioning column; 7, positioning hole; 8, installation ring; 9, second installation slot; 10, skirt type sealing ring; 11, oil storage groove; 12, support ring; 13, third installation slot; 14, bearing; 15, main shaft; 16, positioning ring; 17, sealing strip; 18, threaded hole; 19, fixed bolt; 20, installation plate. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0031] Please refer to Figure 1 , Figure 2 and Figure 3 , a centrifugal fan bearing seat sealing device in the embodiment, including lower fixed frame 1 and upper fixed frame 2, the first installation slot 3 is arranged in the inside of lower fixed frame 1 and upper fixed frame 2, the two sealing plates 4 that are mirror image distribution setting are fixedly connected to the upper end of lower fixed frame 1, the two insertion slots 5 that are mirror image distribution setting are arranged at the bottom end of upper fixed frame 2, the setting of sealing plate 4 and insertion slot 5 provides rigid sealing barrier when sealing plate 4 is inserted into the inside of insertion slot 5, preventing external dust, moisture and other pollutants from entering the inside of bearing seat, four positioning columns 6 that are rectangular array setting are fixedly connected to the bottom end of upper fixed frame 2, four positioning holes 7 that are rectangular array setting are fixedly connected to the upper end of lower fixed frame 1, the rectangular array design of four positioning columns 6 and positioning hole 7 ensures that upper fixed frame 2 and lower fixed frame 1 are quickly aligned, avoiding sealing failure caused by assembly error, installation ring 8 is fixedly connected to both sides of the inside of lower fixed frame 1 and upper fixed frame 2, the second installation slot 9 is arranged at one side of four installation rings 8, the skirt type sealing ring 10 is fixedly connected in the inside of each group of four second installation slots 9, two skirt type sealing rings 10 are embedded in second installation slot 9, forming a flexible sealing layer, which can effectively block the leakage of lubricating oil, the skirt type sealing ring 10 can be attached to the surface of the shaft, adapting to the dynamic sealing requirement under high-speed operation.

[0032] Please refer to Figure 2 ,​Figure 3 and Figure 4 The lower fixing frame 1 and the upper fixing frame 2 are internally provided with oil storage grooves 11 on both sides, which are used to store lubricating grease or oil, can continuously provide lubrication for the bearing 14, reduce friction and wear, prolong the service life of the equipment, and the lower fixing frame 1 and the upper fixing frame 2 are fixedly connected with support rings 12 on both sides, the third installation grooves 13 are internally provided in the four support rings 12, the support rings 12 are fixedly connected on both sides of the lower fixing frame 1 and the upper fixing frame 2, and the installation position of the limiting device is provided through the support rings 12. The bearing 14 is fixedly arranged in the two first installation grooves 3, the main shaft 15 is inserted into the bearing 14, the two positioning rings 16 arranged in mirror image are arranged on the outer wall of the main shaft 15, the first installation groove 3 is used for fixing the bearing 14, and the stability of the bearing 14 during high-speed operation is ensured. The bearing 14 is a core component for supporting the main shaft 15, can reduce friction and bear radial and axial loads, the two positioning rings 16 arranged in mirror image are arranged on the outer wall of the main shaft 15, and are used for limiting the axial displacement of the main shaft 15 to prevent the main shaft 15 from moving at high speed. The operation stability is ensured, the two positioning rings 16 are rotatably arranged in the third installation groove 13, the positioning ring 16 is rotatably arranged in the third installation groove 13, which is used for limiting the axial displacement of the main shaft 15 and forming an additional seal to reduce the entry of dust.

[0033] Please refer to Figure 1 , Figure 4 and Figure 5 The outer wall of the two sealing plates 4 is fixedly provided with two sealing strips 17 arranged in mirror image, the sealing strips 17 are fixed on the outer wall of the sealing plate 4, can fill the gap between the sealing plate 4 and the insertion groove 5, further enhance the sealing effect, prevent the leakage of lubricating oil and the entry of external pollutants into the bearing seat, the lower fixing frame 1 is internally provided with four threaded holes 18 arranged in a rectangular array, the upper fixing frame 2 is internally slidably provided with four fixed bolts 19 arranged in mirror image, the ends of the four fixed bolts 19 away from the upper fixing frame 2 are threadedly arranged in the threaded holes 18, the lower fixing frame 1 is fixedly connected with the mounting plate 20 at the bottom, the bottom is fixedly connected with the mounting plate 20, which is used for fixing or mounting the whole structure, the four fixed bolts 19 are used for fixedly connecting the upper fixing frame 2 and the lower fixing frame 1 together, the two sealing plates 4 are slidably arranged in the insertion groove 5, the four positioning columns 6 are slidably arranged in the positioning holes 7, and the two sealing plates 4 are slidably arranged in the insertion groove 5, which is used for limiting the entry of external dust into the bearing seat. The positioning column 6 is slidably arranged in the positioning hole 7, the positioning column 6 can limit the position of the sealing plate 4, ensure the sealing effect and installation precision.

[0034] The sealing device of the bearing seat of the centrifugal fan in the embodiment is provided by a sealing plate 4, a slot 5 and a skirt seal ring 10, a multiple sealing structure is realized, the sealing plate 4 and the slot 5 are provided, when the sealing plate 4 is inserted into the slot 5, a rigid sealing barrier is provided, external dust, moisture and other pollutants are prevented from entering the bearing seat, the two skirt seal rings 10 are embedded in the second mounting groove 9, a flexible sealing layer is formed, the leakage of lubricating oil is blocked, the skirt seal ring 10 can be attached to the surface of the shaft, the dynamic sealing requirement under high-speed operation is met, the sealing plate 4 and the slot 5 are matched to form the first resealing, the influence of larger particle pollutants and the external environment is blocked, the skirt seal ring 10 is used as the second resealing, the leakage of lubricating oil is prevented, the rectangular array design of the four positioning columns 6 and the positioning holes 7 ensures that the upper fixed frame 2 and the lower fixed frame 1 are quickly aligned, and the sealing failure caused by assembly error is avoided.

[0035] It should be noted that the two skirt seal rings 10 and the four sealing strips 17 are made of fluororubber material, fluororubber has strong resistance to oil chemicals and is suitable for occasions where oil media is contacted.

[0036] The working principle of the above embodiment is as follows:

[0037] Firstly, the main shaft 15 is inserted into the bearing 14, two positioning rings 16 and two skirt seal rings 10 are sleeved on the outer wall of the main shaft 15, the bearing 14 is installed in the first mounting groove 3, the two skirt seal rings 10 are embedded in the second mounting groove 9, a flexible sealing layer is formed, the skirt seal ring 10 can be attached to the surface of the main shaft 15 to form a flexible sealing layer, the leakage of lubricating oil from the bearing seat is prevented, the positioning ring 16 is rotationally arranged in the third mounting groove 13 and is used for limiting the axial displacement of the main shaft 15, the grease or lubricating oil is filled in the oil storage groove 11, the bearing 14 can continuously obtain lubrication during operation, friction and wear are reduced, the upper fixed frame 2 and the lower fixed frame 1 are aligned through the positioning column 6 and the positioning hole 7, the two sealing plates 4 are inserted into the slots 5 at the bottom end of the upper fixed frame 2 to form a rigid sealing barrier, external dust and other pollutants are prevented from entering the bearing seat, the sealing strips 17 are fixed on the outer wall of the sealing plate 4, the gap between the sealing plate 4 and the slot 5 is filled, the sealing effect is further enhanced, the upper fixed frame 2 and the lower fixed frame 1 are fixed together through the four fixing bolts 19, and the assembly is completed, and the installation is performed through the mounting plate 20.

[0038] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting; it is not intended to exclude myriad other embodiments of the present application that other inventors can develop based on the same general inventive concepts embodied by the enclosed claims. That is, although the present application is described in terms of particular embodiments and illustrative figures, it should be apparent that the application can be varied in a multitude of ways. Such alterations, many of which will be apparent to those skilled in the art, can be based on current technology, and as such, this application should not be limited to the particular embodiments described herein, but should be understood to include all embodiments that are within the scope of the appended claims and their equivalents.

[0039] While the embodiments of the application have been shown and described herein, it will be understood by those skilled in the art that many changes, modifications, substitutions and alterations to these embodiments can be made without departing from the principles and spirits of the application, which can be limited only by the scope of the appended claims and their equivalents.

Claims

1. A centrifugal fan bearing housing sealing device comprising a lower fixed frame (1) and an upper fixed frame (2), characterized in that: The lower fixed frame (1) and the upper fixed frame (2) are internally provided with first installation grooves (3), the lower fixed frame (1) is fixedly connected with two mirror image distributed sealing plates (4) at the upper end, the upper fixed frame (2) is provided with two mirror image distributed insertion grooves (5) at the bottom end, the upper fixed frame (2) is fixedly connected with four rectangular array arranged positioning columns (6) at the bottom end, the lower fixed frame (1) is fixedly connected with four rectangular array arranged positioning holes (7) at the upper end, the lower fixed frame (1) and the upper fixed frame (2) are fixedly connected with installation rings (8) at the two sides, the four installation rings (8) are provided with second installation grooves (9) at one side, and the four second installation grooves (9) are fixedly connected with skirt type sealing rings (10) in each group.

2. A centrifugal fan bearing housing seal apparatus as claimed in claim 1, wherein: The lower fixed frame (1) and the upper fixed frame (2) are internally provided with oil storage grooves (11) at the two sides.

3. A centrifugal fan bearing housing seal apparatus as set forth in claim 1 wherein: The lower fixed frame (1) and the upper fixed frame (2) are fixedly connected with support rings (12) at the two sides, and the four support rings (12) are internally provided with third installation grooves (13).

4. A centrifugal fan bearing housing seal apparatus as set forth in claim 1 wherein: Bearings (14) are fixedly arranged in the two first installation grooves (3), the bearings (14) are internally inserted with main shafts (15), and the main shafts (15) are externally sleeved with two mirror image distributed positioning rings (16).

5. A centrifugal fan bearing housing seal apparatus as claimed in claim 4, wherein: The two positioning rings (16) are rotatably arranged in the third installation grooves (13).

6. A centrifugal fan bearing housing seal apparatus as set forth in claim 1 wherein: Two sealing strips (17) are fixedly arranged on the outer walls of the two sealing plates (4).

7. A centrifugal fan bearing housing seal apparatus as set forth in claim 1 wherein: The lower fixed frame (1) is internally provided with four rectangular array arranged threaded holes (18), the upper fixed frame (2) is internally slidably provided with four mirror image distributed fixing bolts (19), the four fixing bolts (19) are threadedly arranged in the threaded holes (18) away from the upper fixed frame (2), and the lower fixed frame (1) is fixedly connected with an installation plate (20) at the bottom end.

8. A centrifugal fan bearing housing seal apparatus as set forth in claim 1 wherein: The two sealing plates (4) are slidably arranged in the insertion grooves (5), and the four positioning columns (6) are slidably arranged in the positioning holes (7).

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