A bearing sealing device for textile machinery

Abstract

The present invention discloses a bearing sealing device for textile machinery, wherein protective shells are detachably and fixedly installed on both end surfaces of the bearing outer ring, and the protective shells are provided with sealing mechanisms, wherein the sealing mechanisms include pressure rods, and a plurality of the pressure rods are spirally connected to threaded holes on the protective shells, and the bottom ends of the pressure rods are fixedly connected to sealing ring plugs, and the cross-section of the sealing ring plugs is arranged in an inverted trapezoidal structure, and a lip of a V-shaped structure is arranged at the bottom end; the present invention arranges the sealing ring plug in an inverted trapezoidal structure, so that the action of gradually entering into the gap from the small end for sealing is more convenient, and the V-shaped lip arranged on the small end can increase the contact degree with the side wall of the gap and improve the sealing performance, and even if the sealing ring plug shrinks under cold conditions, it is only necessary to continue to spirally rotate the hexagonal nut and the pressure rod to achieve further extension of the sealing ring plug, thereby achieving the effect of compensating for the gap caused by the cold shrinkage phenomenon. Compared with the prior art, the present invention has better environmental adaptability and higher practical value.

Description

Technical Field

[0001] The invention belongs to the technical field of bearing seals, and in particular relates to a bearing seal device for textile machinery. Background Art

[0002] Bearings are an important component in modern mechanical equipment. Their main function is to support mechanical rotating bodies, reduce the friction coefficient during their movement, and ensure their rotation accuracy.

[0003] The purpose of the bearing seal is to protect the bearing and prevent external dust, dirt, metal particles, moisture, acid gas and other debris from invading the interior of the bearing. If the bearing seal is not strong and external debris invades, the working condition of the bearing will be greatly deteriorated and the service life of the bearing will be greatly shortened.

[0004] The bearing seal has another function, which is to prevent grease from leaking from the bearing components. If the grease leaks, the normal lubrication of the bearing will be destroyed, causing the bearing to burn out due to high friction and heat, and it will not work.

[0005] The prior art has a Chinese patent with application number CN202210647103.1, which discloses a bearing sealing device for a humid environment, including an upper connecting end, a lower connecting end, an upper protective shell, a lower protective shell and a sealing ring, wherein the upper connecting end is installed on the inner side of the upper end of the bearing body; the lower connecting end is installed on the outer side of the lower end of the bearing body; the upper protective shell is installed at the top of the upper connecting end and contacts the outer side of the top of the bearing body; the lower protective shell is installed on the outer side of the lower connecting end, and the inner side of the lower protective shell is in contact with the outer side of the lower end of the upper protective shell; a sealing ring is provided at the connection between the lower protective shell and the lower connecting end.

[0006] The above technical solution seals the bearing body by nesting the upper and lower protective shells, which prevents water vapor from entering the bearing body. However, in actual use, it is found that there are a lot of small flying catkins in the use environment of textile machinery, and in cold areas, the sealing ring will shrink, resulting in the upper and lower protective shells not being able to be completely nested and sealed, and gaps are likely to appear, causing the entire sealing device to be unable to seal the bearing. Small flying catkins can easily enter and become impurities that affect the operation of the bearing and cause oil leakage. Summary of the invention

[0007] The purpose of the present invention is to provide a bearing sealing device for textile machinery to solve the problem that in cold areas, the sealing ring will shrink, resulting in the upper and lower protective shells cannot be completely nested and sealed, and gaps are likely to appear, causing the entire sealing device to be unable to seal the bearing, and small flying catkins can easily enter therein and become impurities that affect the operation of the bearing and cause oil leakage.

[0008] In order to achieve the above object, the present invention adopts the following technical solutions:

[0009] A bearing sealing device for textile machinery comprises a bearing outer ring, a bearing inner ring and a roller, and protective shells are detachably and fixedly mounted on both end surfaces of the bearing outer ring, and a sealing mechanism is provided on the protective shells, and the sealing mechanism comprises:

[0010] A pressure rod, wherein a plurality of the pressure rods are spirally connected to threaded holes provided on the protective shell, and the bottom end of the pressure rod is fixedly connected to a sealing ring plug, the sealing ring plug is located inside the protective shell, the cross section of the sealing ring plug is arranged in an inverted trapezoidal structure, and the bottom end of the sealing ring plug is arranged with a lip of a V-shaped structure;

[0011] An auxiliary seam pressing mechanism is also installed on the protective shell, and the auxiliary seam pressing mechanism is used to press the gaps between the sealing ring plug and the outer ring and inner ring of the bearing.

[0012] Preferably, the auxiliary seam pressing mechanism includes a plurality of guide plates, which are distributed along the outer ring and the inner ring of the sealing ring plug, and are fixedly mounted on the inner side of the protective shell, and form an angle with the end face of the outer ring of the bearing, and the top of the protective shell is connected to an annular pressure plate via a screw, and the screw and the annular pressure plate are connected by a spiral transmission, and the screw and the top of the protective shell are connected by a rotation; the bottom of the annular pressure plate is in contact with the top of the elastic rod, and the bottom end of the elastic rod obliquely penetrates the protective shell, and the diameter of the elastic rod gradually decreases toward the bottom end.

[0013] Preferably, the free end of the elastic rod is inclined toward the guide plate, the free end of the elastic rod is deformed by pressure, forms a curled shape after being guided by the guide plate, and squeezes the gap between the bottom sealing ring plug and the bearing outer ring or the bearing inner ring.

[0014] Preferably, the auxiliary seam pressing mechanism includes a plurality of support rods, the top ends of the support rods penetrate the protective shell and are in contact with the annular pressure plate, a pressure plate is fixed to the bottom of the support rods, an elastic rubber block is fixed to the bottom surface of the pressure plate, and the elastic rubber block is connected to the sealing ring plug.

[0015] Preferably, the auxiliary seam pressing mechanism is located between two adjacent pressure rods and is staggered with the pressure rods.

[0016] Preferably, the protective shell is made of transparent material.

[0017] Preferably, the two protective shells are threadedly connected to the two end surfaces of the outer ring of the bearing by screws or bolts respectively.

[0018] Preferably, two sides of the lip of the V-shaped structure are arranged to be gradually opened outwards.

[0019] Preferably, one end of the pressure rod located outside the protective shell is fixedly connected with a hexagonal nut to cooperate with the hexagonal sleeve for spiral rotation.

[0020] Preferably, a groove is provided at the bottom of the sealing ring plug.

[0021] Technical effects and advantages of the present invention: Compared with the prior art, the bearing sealing device for textile machinery proposed by the present invention has the following advantages:

[0022] 1. The present invention fixes a protective shell on both end surfaces of the outer ring of the bearing respectively. After the fixing is completed, the hexagonal nut is sequentially sleeved by a sleeve, and the hexagonal nut and the connected pressure rod are rotated so that the pressure rod is spirally rotated and moved downward along the threaded hole, thereby driving the fixed sealing ring plug to be forcibly squeezed into the gap between the inner ring of the bearing and the outer ring of the bearing to seal the gap. Since the sealing ring plug is arranged in an inverted trapezoidal structure, it is more convenient to gradually enter the gap from the small end for sealing. The V-shaped lip arranged on the small end can increase the contact degree with the side wall of the gap and improve the sealing performance. Even if the sealing ring plug shrinks under cold conditions, it only needs to continue to spirally rotate the hexagonal nut and the pressure rod to achieve further extension of the sealing ring plug, thereby achieving the effect of compensating for the gap caused by the cold shrinkage phenomenon. Compared with the prior art, the environmental adaptability of the present invention is better and the practical value is higher.

[0023] 2. The present invention presses the elastic rod at the bottom downward through the annular pressure plate, causing it to deform in the direction of its original inclination and just touch the guide plate, which is passively changed in direction. As the elastic rod continues to move downward, the free end of the elastic rod gradually forms a curled shape, continuously forming a flexible pressure on the gap of the sealing ring plug. Since the top edge of the sealing ring plug is relatively large, it is squeezed by the curled elastic rod to fit against the end face of the bearing outer ring or the bearing ring, thereby playing the role of sealing the gap between the sealing ring plug and the bearing inner ring and the bearing outer ring, so that the sealing performance of the bearing is further enhanced.

[0024] 3. In order to supplement the flexible compression effect of the elastic rod, the present invention further provides a support rod. The support rod and the elastic rod are staggered and distributed between the pressure rods to form a positive pressure effect on the sealing ring plug, thereby further improving the sealing performance of the bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 Schematic diagram of a three-dimensional structure of an embodiment of the present invention.

[0026] Figure 2 This is a top view schematic diagram of the present invention after the annular pressure plate is removed.

[0027] Figure 3 for Figure 2 Schematic cross-sectional view at AA in the middle.

[0028] Figure 4 for Figure 3 A partial enlarged structural diagram of point B in the middle.

[0029] Figure 5 for Figure 3 A partial enlarged structural diagram of point C in the middle.

[0030] Figure 6 for Figure 5 Schematic diagram of working status. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] The present invention provides Figure 1-6 A bearing sealing device for a textile machinery is shown.

[0033] It includes a bearing outer ring 1, a bearing inner ring 2 and a roller 3. The two end surfaces of the bearing outer ring 1 are detachably fixed with protective shells 4. The two protective shells 4 are respectively threadedly connected to the two end surfaces of the bearing outer ring 1 by screws or bolts.

[0034] The protective shell 4 is provided with a sealing mechanism 5, and the sealing mechanism 5 includes:

[0035] A pressure rod 51, wherein a plurality of the pressure rods 51 are spirally connected to a threaded hole 52 provided on the protective shell 4, and the bottom end of the pressure rod 51 is fixedly connected to a sealing ring plug 53, wherein the sealing ring plug 53 is located inside the protective shell 4, and the cross section of the sealing ring plug 53 is arranged in an inverted trapezoidal structure 54, and a lip portion 55 of a V-shaped structure is arranged at the bottom end of the sealing ring plug 53; one end of the pressure rod 51 located outside the protective shell 4 is fixedly connected to a hexagonal nut 7 to cooperate with a hexagonal sleeve for spiral rotation;

[0036] An auxiliary seam pressing mechanism 6 is also installed on the protective shell 4, and the auxiliary seam pressing mechanism 6 is used to press the gap between the sealing ring plug 53 and the bearing outer ring 1 and the bearing inner ring 2. In order to solve the problem that in cold areas, the sealing ring will shrink, resulting in the inability to completely nest and seal between the upper and lower protective shells 4, which is prone to gaps, causing the entire sealing device to be unable to seal the bearing, and small flying catkins can easily enter and become impurities that affect the operation of the bearing, and at the same time cause oil leakage, the present invention fixes a protective shell 4 on the two end faces of the bearing outer ring 1 respectively, and after fixing, the hexagonal nut 7 is sequentially sleeved through the sleeve, and the hexagonal nut 7 and the connected pressure rod 51 are rotated so that the pressure rod 51 is spirally rotated and moved downward along the threaded hole 52, thereby driving the fixed sealing ring plug 53 to be forcibly squeezed into the gap between the bearing inner ring 2 and the bearing outer ring 1, thereby sealing the gap;

[0037] Since the sealing ring plug 53 is arranged in an inverted trapezoidal structure 54, it is more convenient to gradually enter the gap from the small end for sealing. The V-shaped lip 55 arranged on the small end can increase the contact degree with the side wall of the gap and improve the sealing performance. Even in cold conditions, the sealing ring plug 53 shrinks. It is only necessary to continue to spirally rotate the hexagonal nut 7 and the pressure rod 51 to achieve further extension of the sealing ring plug 53, thereby compensating for the gap caused by the cold shrinkage phenomenon and preventing oil leakage and textile flying catkins from entering the interior of the bearing. Compared with the prior art, the present invention has better environmental adaptability and higher practical value.

[0038] Furthermore, the auxiliary pressing seam mechanism 6 includes a plurality of guide plates 61, which are distributed along the outer ring and inner ring of the sealing ring plug 53, and the guide plates 61 are fixedly mounted on the inner side of the protective shell 4, and form an angle with the end face of the bearing outer ring 1, and the top of the protective shell 4 is connected to an annular pressure plate 62 through a screw, and the top of the protective shell 4 is connected to an annular pressure plate 62 through a screw 9, and the screw 9 and the annular pressure plate 62 are connected by a spiral transmission, and the screw 9 and the top of the protective shell 4 are connected by rotation; rotating the screw 9 can adjust the distance between the annular pressure plate 62 and the protective shell 4, and the bottom of the annular pressure plate 62 is in contact with the top of the elastic rod 63, and the bottom end of the elastic rod 63 obliquely penetrates the protective shell 4, and the diameter of the elastic rod 63 gradually decreases toward the bottom end.

[0039] The free end of the elastic rod 63 is inclined toward the guide plate 61 , and the free end of the elastic rod 63 is deformed by pressure, and forms a curled shape after being guided by the guide plate 61 , and squeezes the gap between the bottom sealing ring plug 53 and the bearing outer ring 1 or the bearing inner ring 2 .

[0040] In order to enhance the sealing performance between the sealing ring and the bearing outer ring 1 and the bearing inner ring 2, the present invention further provides an auxiliary seam pressing mechanism 6. After most of the sealing ring plug 53 enters the gap, the screw 9 is rotated. Since the screw 9 is rotatably connected to the protective shell 4 and the protective shell 4 is fixed, the screw 9 spirally rotates and drives the annular pressure plate 62 to move downward, thereby pressing the elastic rod 63 at the bottom to move downward. Since the bottom end diameter of the elastic rod 63 is small, it is easy to deform in the direction of the original inclination, just touching the guide plate 61, and the guide plate 61 passively changes the direction. As the elastic rod 63 continues to move downward, the free end of the elastic rod 63 gradually forms a curled shape, continuously forming a flexible pressure on the gap of the sealing ring plug 53. Since the top edge of the sealing ring plug 53 is large, it will be squeezed by the curled elastic rod 63 to fit the end face of the bearing outer ring 1 or the bearing ring, thereby playing the role of sealing the gap between the sealing ring plug 53 and the bearing inner ring 2 and the bearing outer ring 1, so that the sealing performance of the bearing is further enhanced.

[0041] Furthermore, the auxiliary seam pressing mechanism 6 includes a plurality of support rods 64, the top ends of the support rods 64 penetrate the protective shell 4 and are in contact with the annular pressure plate 62, a pressure plate 65 is fixed to the bottom of the support rods 64, an elastic rubber block 66 is fixed to the bottom surface of the pressure plate 65, and the elastic rubber block 66 is abutted and connected to the sealing ring plug 53. The auxiliary seam pressing mechanism 6 is located between two adjacent pressure rods 51 and is staggered with the pressure rods 51.

[0042] In order to supplement the flexible compression effect of the elastic rod 63, the present invention further provides a support rod 64, and the support rod 64 and the elastic rod 63 are staggered and distributed between the pressure rod 51 to form a cleaning and pressing seam effect on the edge of the sealing ring plug 53, thereby further improving the sealing performance of the bearing; specifically, when the annular pressure plate 62 moves downward, it will squeeze the support rod 64 to move downward, and when the pressure plate 65 and the elastic rubber block 66 at the bottom of the support rod 64 move down to the sealing ring plug 53, the elastic rubber block 66 is squeezed and deformed and fits tightly with the sealing ring plug 53, and under the rigid support of the support rod 64, a positive pressure is applied to the sealing ring plug 53, so that the top edge of the sealing ring plug 53 is strongly fitted with the bearing outer ring 1 or the end face of the bearing ring, and then plays a role in sealing the gap between the sealing ring plug 53 and the bearing inner ring 2 and the bearing outer ring 1, so that the sealing performance of the bearing is further enhanced.

[0043] Preferably, the protective shell 4 is made of a transparent material, which allows maintenance personnel to observe the internal conditions of the bearing. If there are a lot of impurities or oil leakage, it is clear at a glance and can be solved in time.

[0044] Preferably, the two sides of the V-shaped lip 55 are configured to gradually open outwards. The outwardly opened lip 55 is more likely to elastically deform when in contact with the gap sidewall, thereby expanding the sealing area between the lip 55 and the gap sidewall and enhancing the sealing effect.

[0045] Preferably, a groove 8 is provided at the bottom of the sealing ring plug 53. The provision of the groove 8 reduces the volume of the sealing ring plug 53 and saves materials; at the same time, when the bottom of the sealing ring plug 53 cannot continue to extend into the relative fixed top, the middle part of the sealing ring plug 53 generates a deformation force in the direction of the roller 3 under the strong push of the pressure rod 51, achieving the effect of pre-tensioning outward, playing a role in enhancing the close contact with the side wall of the gap, and further enhancing the sealing effect.

[0046] In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "up", "down", "left", "right", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0047] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. 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 bearing sealing device for a textile machinery, comprising a bearing outer ring (1), a bearing inner ring (2) and a roller (3), Features: A protective shell (4) is detachably fixedly mounted on both end surfaces of the bearing outer ring (1), and a sealing mechanism (5) is provided on the protective shell (4). The sealing mechanism (5) comprises: A pressure rod (51), wherein a plurality of the pressure rods (51) are spirally connected to a threaded hole (52) provided on the protective shell (4), the bottom end of the pressure rod (51) is fixedly connected to a sealing ring plug (53), the sealing ring plug (53) is located inside the protective shell (4), the cross section of the sealing ring plug (53) is arranged in an inverted trapezoidal structure (54), and the bottom end of the sealing ring plug (53) is provided with a lip portion (55) of a V-shaped structure; An auxiliary seam pressing mechanism (6) is also installed on the protective shell (4), and the auxiliary seam pressing mechanism (6) is used to press the gap between the sealing ring plug (53) and the bearing outer ring (1) and the bearing inner ring (2); The auxiliary seam pressing mechanism (6) comprises a plurality of guide plates (61), the guide plates (61) are distributed along the outer ring and the inner ring of the sealing ring plug (53), the guide plates (61) are fixedly mounted on the inner side of the protective shell (4), and form an angle with the end face of the bearing outer ring (1), the top of the protective shell (4) is connected to an annular pressure plate (62) via a screw (9), the screw (9) and the annular pressure plate (62) are connected in a spiral transmission manner, and the screw (9) and the top of the protective shell (4) are connected in a rotational manner; The bottom of the annular pressure plate (62) is in contact with the top of the elastic rod (63), the bottom end of the elastic rod (63) obliquely penetrates the protective shell (4), and the diameter of the elastic rod (63) gradually decreases toward the bottom end; The free end of the elastic rod (63) is inclined toward the guide plate (61), and the free end of the elastic rod (63) is deformed by pressure, and after being guided by the guide plate (61), it forms a curled shape and squeezes the gap between the bottom sealing ring plug (53) and the bearing outer ring (1) or the bearing inner ring (2).

2. A bearing sealing device for textile machinery according to claim 1, Features: The auxiliary seam pressing mechanism (6) comprises a plurality of support rods (64), the top ends of the support rods (64) penetrate the protective shell (4) and are in contact with the annular pressure plate (62), a pressure plate (65) is fixed to the bottom of the support rods (64), an elastic rubber block (66) is fixed to the bottom surface of the pressure plate (65), and the elastic rubber block (66) is in contact with and connected to the sealing ring plug (53).

3. A bearing sealing device for textile machinery according to claim 2, Features: The auxiliary seam pressing mechanism (6) is located between two adjacent pressing rods (51) and is staggered with the pressing rods (51).

4. A bearing sealing device for textile machinery according to claim 1, Features: The protective shell (4) is made of transparent material.

5. A bearing sealing device for textile machinery according to claim 1, Features: The two protective shells (4) are respectively threadedly connected to the two end surfaces of the bearing outer ring (1) by means of screws or bolts.

6. A bearing sealing device for textile machinery according to claim 5, Features: The two sides of the lip (55) of the V-shaped structure are arranged to be gradually opened outwards.

7. A bearing sealing device for textile machinery according to claim 6, Features: One end of the pressure rod (51) located outside the protective shell (4) is fixedly connected to a hexagonal nut (7) to cooperate with the hexagonal sleeve for spiral rotation.

8. A bearing sealing device for textile machinery according to claim 7, Features: The bottom of the sealing ring plug (53) is provided with a groove (8).

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