Novel positioning type end face floating seal

Abstract

The utility model discloses a novel positioning type end face floating seal which comprises a static ring, a movable ring, a positioning boss and a floating seal seat or a chain wheel piece. According to the utility model, the movable ring is provided with the positioning boss, and the floating sealing seat or the chain wheel sheet is provided with the limiting groove matched with the positioning boss, so that relative rotation is prevented in the operation process, and the situation that the rubber ring deforms and loses efficacy due to relative movement is avoided. The problem of oil leakage caused by failure of the rubber ring in the running process of the chain wheel shaft group is solved, and the failure rate is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the transmission component field of coal mining underground working face scraper conveyor, concretely relates to a positioning type novel end face floating seal. BACKGROUND

[0002] At present, the floating seal used in the chain wheel shaft group is composed of three parts of a static ring, a floating ring and an O-shaped ring, referring to Figure 1 The working principle is that the floating seal is installed in the sealing seat cavity, the sealing seat cavity generates an oblique downward force on the O-shaped ring, and the force is transmitted to the sealing ring of the floating seal, the oblique downward force is decomposed into a force for promoting the mutual adhesion of the two half sealing rings, the static ring and the floating ring are effectively adhered to each other on the grinding surface, an oil film is formed between the grinding surfaces of the floating seal, and the sealing effect is achieved during operation. The force formed by the sealing seat cavity on the floating seal needs to be kept at a proper value, and the force needs to be effectively controlled by controlling the gap between the floating seal seat and the static seal seat, the recommended value of the floating seal manufacturer is A±0.5mm, and the tolerance requirement is very strict. During the assembly process of the chain wheel shaft, the parts machining tolerance and the bearing play are affected, especially the bearing play, and the bearing play of some bearings often exceeds 0.5mm, and it is difficult to control the value range recommended by the floating seal manufacturer due to the bearing axial tolerance. Also, because the position of the floating seal is inside the sealing seat, it is also impossible to measure whether the gap is within the value range recommended by the floating seal manufacturer. Ultimately, the use of the floating seal is directly affected, the large sealing seat gap greatly reduces the service life of the floating seal, and the oil leakage condition may occur; if the sealing seat gap is small, the floating ring of the floating seal will move relative to the floating seal seat during operation, causing damage to the O-shaped ring, and the chain wheel shaft group leaks oil, and continues to operate, which may cause damage to the bearing and high temperature of the chain wheel shaft group. CONTENT OF THE UTILITY MODEL

[0003] In view of the above technical deficiencies, the utility model aims at providing a positioning type novel end face floating seal, which solves the oil leakage problem caused by the relative movement between the dynamic ring and the floating seal seat (chain wheel piece) during the use of the chain wheel shaft group.

[0004] To solve the above technical problems, the utility model adopts the following technical scheme:

[0005] The utility model provides a positioning type novel end face floating seal, which is applied to an underground conveyor chain wheel shaft group, and comprises:

[0006] The static ring and the dynamic ring are provided with a positioning boss on the dynamic ring;

[0007] The floating seal seat or the chain wheel piece is provided with a limiting groove matched with the positioning boss.

[0008] The positioning boss and the limiting groove are matched to prevent relative rotation between the movable ring and the floating seal seat or the sprocket piece, thereby avoiding the deformation failure of the rubber ring caused by relative movement.

[0009] Preferably, the number of the positioning boss is one or more, and the number of the limiting groove corresponds to the number of the positioning boss.

[0010] Preferably, the structure of the positioning boss includes a circle, a square and a triangle to ensure that the relative rotation between the movable ring and the floating seal seat or the sprocket piece is prevented.

[0011] Preferably, the matching mode of the positioning boss and the limiting groove is interference fit, clearance fit or transition fit to ensure that they are relatively stationary during operation.

[0012] Preferably, the material of the positioning boss is metal or plastic to meet the strength and wear resistance requirements.

[0013] Preferably, the matching surfaces of the positioning boss and the limiting groove are surface treated to improve wear resistance and corrosion resistance.

[0014] The beneficial effects of the utility model are as follows:

[0015] The beneficial effects of the technical scheme are summarized as follows according to the content of the disclosure:

[0016] 1. Solve the oil leakage problem: through the cooperation of the positioning boss and the limiting groove, the relative rotation between the movable ring and the floating seal seat or the sprocket piece is prevented, thereby avoiding the deformation failure of the rubber ring caused by relative movement, effectively solving the oil leakage problem caused by the failure of the rubber ring during the operation of the sprocket shaft set.

[0017] 2. Reduce the failure rate: since the relative rotation between the movable ring and the floating seal seat or the sprocket piece is prevented, the failure caused by the failure of the sealing element is reduced, and the reliability and stability of the equipment are improved.

[0018] 3. Reduce maintenance cost: the replacement frequency of the sprocket shaft set caused by oil leakage is reduced, the labor cost, the replacement cost of the sealing element and the bearing are reduced, and the storage of spare parts of the bearing and the floating seal is also reduced.

[0019] 4. Improve the efficiency of coal mining: the frequency of replacing the sprocket shaft set caused by oil leakage is reduced, and the situation of stopping production in the mine is avoided, thereby improving the efficiency of coal mining.

[0020] 5. Simple structure, easy to implement: the structure of the utility model is simple, easy to manufacture and install, and does not require complex processing technology and expensive materials.

[0021] 6. Strong adaptability: The bosses arranged on the moving ring can be one or more, and the number of limit grooves matched with them also changes accordingly. The boss structure is of multiple styles, which can adapt to different working conditions and requirements.

[0022] 7. Reducing the use cost: By reducing the maintenance and replacement frequency, the use cost and spare parts storage demand of the use unit are reduced.

[0023] 8. Improving the cleanliness of the equipment operating environment: Since the oil leakage phenomenon is reduced, the equipment operating environment is cleaner, which is conducive to the long-term stable operation of the equipment.

[0024] 9. Enhancing the safety of the equipment: The risk of equipment overheating and bearing damage caused by oil leakage is reduced, and the safety of the equipment operation is improved. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0026] Figure 1 is a schematic diagram of the original sealing of the chain wheel shaft group in the prior art.

[0027] Figure 2 is a positioning type novel end face floating seal assembly schematic diagram provided by the present application;

[0028] Figure 3 is a cooperation schematic diagram of the positioning boss and the limit groove provided by the present application;

[0029] Figure 4 is a positioning boss arrangement position schematic diagram provided by the present application.

[0030] MARKED DESCRIPTION OF DRAWINGS:

[0031] 1, static ring; 2, moving ring; 3, positioning boss; 4, floating seal seat; 5, limit groove. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0033] like Figures 2 to 4 As shown, a novel positioning-type end-face floating seal includes:

[0034] A stationary ring 1 and a moving ring 2, wherein the moving ring 2 is provided with a positioning boss 3;

[0035] A floating seal seat or sprocket plate, wherein the floating seal seat or sprocket plate is provided with a limiting groove that cooperates with the positioning boss 3; in this embodiment, the limiting groove is provided on the floating seal seat 4;

[0036] The positioning boss 3 and the limiting groove 5 cooperate with each other to prevent relative rotation between the moving ring 2 and the floating sealing seat or sprocket, thereby avoiding the rubber ring from deforming and failing due to relative motion.

[0037] The number of positioning bosses 3 is two, which are symmetrically arranged along the central axis of the floating seal seat or sprocket plate. The number of limiting grooves 5 corresponds to the number of positioning bosses 3, which is also two.

[0038] The positioning boss 3 has a square structure to ensure that relative rotation between the moving ring 2 and the floating seal seat or sprocket is prevented.

[0039] The positioning boss 3 and the limiting groove 5 are fitted with a clearance fit to ensure that they remain relatively stationary during operation.

[0040] The positioning boss 3 is made of metal to meet the requirements of strength and wear resistance.

[0041] The mating surfaces of the positioning boss 3 and the limiting groove 5 are surface treated to improve wear resistance and corrosion resistance.

[0042] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A novel positioning-type end-face floating seal, applied to the sprocket shaft assembly of an underground transport vehicle, characterized in that, include: A stationary ring (1) and a moving ring (2), wherein a positioning boss (3) is provided on the moving ring (2); A floating seal seat or sprocket, wherein the floating seal seat or sprocket is provided with a limiting groove (5) that cooperates with the positioning boss (3); The positioning boss (3) and the limiting groove (5) cooperate with each other to prevent relative rotation between the moving ring (2) and the floating sealing seat or sprocket, thereby avoiding the occurrence of rubber ring deformation failure due to relative motion.

2. The novel positioning end-face floating seal according to claim 1, characterized in that, The number of the positioning bosses (3) is one or more, and the number of the limiting grooves (5) corresponds to the number of the positioning bosses (3).

3. The novel positioning end-face floating seal according to claim 1, characterized in that, The positioning boss (3) has a structure that includes circles, squares and triangles to ensure that the relative rotation between the moving ring (2) and the floating seal seat or sprocket is prevented.

4. The novel positioning end-face floating seal according to claim 1, characterized in that, The positioning boss (3) and the limiting groove (5) are fitted by interference fit, clearance fit or transition fit to ensure that they remain relatively stationary during operation.

5. The novel positioning end-face floating seal according to claim 1, characterized in that, The positioning boss (3) is made of metal or plastic to meet the requirements of strength and wear resistance.

6. The novel positioning end-face floating seal according to claim 1, characterized in that, The mating surfaces of the positioning boss (3) and the limiting groove (5) are surface treated to improve wear resistance and corrosion resistance.

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