Labyrinth seal conveying chain with oil storage function

Abstract

The utility model discloses a labyrinth seal conveying chain with an oil storage function, which comprises a pin shaft, two outer chain plates are arranged on the pin shaft, a sleeve positioned between the two outer chain plates is sleeved on the pin shaft, two inner chain plates are arranged on the sleeve, and a roller positioned between the two inner chain plates is sleeved on the sleeve. The sealing structure is characterized in that the two ends of the sleeve and the pin shaft are sealed through labyrinth sealing pieces, each labyrinth sealing piece is provided with a cavity, a sealing ring is arranged in each cavity, and lubricating oil is stored in each cavity in the corresponding sealing ring, so that compared with the prior art, abrasion caused by the fact that materials enter the space between the sleeve and the pin shaft can be prevented, and the service life of the pin shaft is prolonged. And the grease lubrication time between the sleeve and the pin shaft is prolonged, and the service life of the conveying chain is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of conveying machinery, in particular to a labyrinth sealing conveying chain with an oil storage function. Background Art

[0002] The conveyor chain is used in the chain bucket continuous elevator, which is a closed space. During operation, dirty, hard particles or dust in the harsh environment will enter the chain hinge or other gaps. These hard particles or dust will act as abrasives to aggravate the wear of the pin and sleeve, resulting in wear of the chain and reduced service life. The conveyor chains currently used in elevators all have this problem. When the conveyor chain is assembled in the factory, a certain amount of lubricating oil will be applied to the pin sleeve to play a lubricating role and reduce the wear of the pin and sleeve. However, after the conveyor chain is installed in the elevator and has been running for a few months, the grease in the pin and sleeve can easily be consumed, resulting in dry grinding. Therefore, it is necessary to design a conveyor chain that can meet the working needs of the elevator. It is required that there is grease lubrication between the sleeve and the pin for a long time, and the service life of the conveyor chain is required to be significantly improved. Summary of the Invention

[0003] The purpose of the utility model is to solve the problems in the prior art and propose a labyrinth seal conveyor chain with an oil storage function, which can prevent the wear caused by the entry of materials between the sleeve and the pin shaft, extend the grease lubrication time between the sleeve and the pin shaft, and improve the service life of the conveyor chain.

[0004] To achieve the above-mentioned purpose, the utility model proposes a labyrinth sealed conveyor chain with an oil storage function, comprising a pin shaft, two outer link plates being provided on the pin shaft, a sleeve being sleeved on the pin shaft and located between the two outer link plates, two inner link plates being provided on the sleeve, and a roller being sleeved on the sleeve and located between the two inner link plates. The utility model is characterized in that both ends of the sleeve and the pin shaft are sealed by a labyrinth seal, the labyrinth seal is provided with a cavity, a sealing ring is provided in the cavity, and the cavity in the sealing ring stores lubricating oil.

[0005] Preferably, the cavity in the sealing ring is provided with an oil storage sponge.

[0006] Preferably, the labyrinth seal is composed of an inner cover and an outer cover that fit together and snap together. The edges of the inner cover and the outer cover are respectively provided with a retaining ring I and a retaining ring II. The retaining ring I is located inside the retaining ring II. The retaining ring I and the retaining ring II constitute a labyrinth seal, and the space between the inner cover and the outer cover constitutes a cavity.

[0007] Preferably, the inner cover is provided on the sleeve and is in contact with the outer side surface of the corresponding inner link plate, and the outer cover is provided on the pin and is in contact with the inner side surface of the corresponding outer link plate.

[0008] Preferably, both ends of the sleeve are provided with a plurality of oil inlets located in the cavity.

[0009] The beneficial effects of the utility model are as follows: the utility model seals the two ends of the sleeve and the pin shaft through a labyrinth seal, the labyrinth seal is provided with a cavity, a sealing ring is provided in the cavity, and the cavity in the sealing ring stores lubricating oil. Compared with the prior art, the utility model can prevent the wear caused by the material entering the space between the sleeve and the pin shaft, extend the time of grease lubrication between the sleeve and the pin shaft, and improve the service life of the conveyor chain.

[0010] The features and advantages of the present invention will be described in detail through embodiments with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic structural diagram of a labyrinth seal conveyor chain with oil storage function in the utility model;

[0012] Figure 2 yes Figure 1 A magnified view of middle A;

[0013] Figure 3 It is a structural diagram in which the oil inlet is arranged on the sleeve.

[0014] In the figure: 1-pin, 2-outer link plate, 3-sleeve, 4-inner link plate, 5-roller, 6-labyrinth seal, 7-cavity, 8-sealing ring, 9-oil storage sponge, 10-oil inlet, 61-inner cover, 62-outer cover, 63-retaining ring I, 64-retaining ring II. DETAILED DESCRIPTION

[0015] See Figure 1 、 Figure 2 and Figure 3 The utility model is a labyrinth seal conveyor chain with an oil storage function, comprising a pin shaft 1, two outer link plates 2 being provided on the pin shaft 1, a sleeve 3 being sleeved on the pin shaft 1 and located between the two outer link plates 2, two inner link plates 4 being provided on the sleeve 3, and a roller 5 being sleeved on the sleeve 3 and located between the two inner link plates 4, characterized in that both ends of the sleeve 3 and the pin shaft 1 are sealed by a labyrinth seal 6, the labyrinth seal 6 is provided with a cavity 7, a sealing ring 8 is provided in the cavity 7, and the cavity 7 in the sealing ring 8 stores lubricating oil.

[0016] The cavity 7 in the sealing ring 8 is provided with an oil storage sponge 9.

[0017] The labyrinth seal 6 is composed of an inner cover 61 and an outer cover 62 that fit together and snap together. The edges of the inner cover 61 and the outer cover 62 are respectively provided with a retaining ring I63 and a retaining ring II64. The retaining ring I63 is located inside the retaining ring II64. The retaining ring I63 and the retaining ring II64 constitute a labyrinth seal, and the space between the inner cover 61 and the outer cover 62 constitutes a cavity 7.

[0018] The inner cover 61 is provided on the sleeve 3 and is in contact with the outer side surface of the corresponding inner link plate 4 , and the outer cover 62 is provided on the pin shaft 1 and is in contact with the inner side surface of the corresponding outer link plate 2 .

[0019] Both ends of the sleeve 3 are provided with a plurality of oil inlets 10 located in the cavity 7 .

[0020] Working process of this utility model:

[0021] The utility model discloses a labyrinth seal conveyor chain with an oil storage function. During operation, the inner cover 61 is installed on the sleeve 3 and fits with the inner chain plate 4. The outer cover 62 is installed on the pin shaft 1 and fits with the outer chain plate 2. The inner cover 61 and the outer cover 62 cooperate with each other to form a large cavity and a labyrinth seal structure, which prevents hard particles or dust in the elevator from entering the gap between the sleeve 3 and the pin shaft 1. The elastic sealing ring 8 is installed on the outside of the labyrinth seal cavity 7, which can not only prevent hard particles or dust from entering again, but also prevent the lubricating oil in the cavity 7 from flowing out. The oil storage sponge is installed in the sealing ring 8 to store grease. Four oil inlets 10 are opened at each end of the sleeve 3 to facilitate the lubricating grease to flow into the gap between the sleeve 3 and the pin shaft 1.

[0022] When the conveyor chain is assembled in the production workshop, it is required that the oil storage sponge 9 and the gap between the pin shaft 1 and the sleeve 3 are all filled with lubricating oil. After the conveyor chain is used, the lubricating oil will slowly be consumed. When the lubricating oil is consumed, the lubricating oil in the oil storage sponge 9 enters the gap between the pin shaft 1 and the sleeve 3 through the oil inlet 10 at both ends of the sleeve 3 under the influence of gravity, which greatly improves the service life of the conveyor chain.

[0023] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention falls within the scope of protection of the present invention.

Claims

1. A labyrinth seal conveyor chain with an oil storage function, comprising a pin (1), two outer link plates (2) provided on the pin (1), a sleeve (3) located between the two outer link plates (2) sleeved on the pin (1), two inner link plates (4) provided on the sleeve (3), a roller (5) located between the two inner link plates (4) sleeved on the sleeve (3), characterized in that: Both ends of the sleeve (3) and the pin shaft (1) are sealed by labyrinth seals (6), the labyrinth seal (6) is provided with a cavity (7), a sealing ring (8) is provided in the cavity (7), and the cavity (7) in the sealing ring (8) stores lubricating oil.

2. A labyrinth seal conveyor chain with oil storage function as claimed in claim 1, characterized in that: The cavity (7) inside the sealing ring (8) is provided with an oil storage sponge (9).

3. The labyrinth seal conveyor chain with oil storage function according to claim 1, characterized in that: The labyrinth seal (6) is composed of an inner cover (61) and an outer cover (62) that are fitted together. A retaining ring I (63) and a retaining ring II (64) are provided on the edges of the inner cover (61) and the outer cover (62), respectively. The retaining ring I (63) is located inside the retaining ring II (64). The retaining ring I (63) and the retaining ring II (64) constitute a labyrinth seal. The space between the inner cover (61) and the outer cover (62) constitutes a cavity (7).

4. A labyrinth seal conveyor chain with oil storage function as claimed in claim 3, characterized in that: The inner cover (61) is provided on the sleeve (3) and is fitted with the outer side surface of the corresponding inner link plate (4); the outer cover (62) is provided on the pin shaft (1) and is fitted with the inner side surface of the corresponding outer link plate (2).

5. The labyrinth seal conveyor chain with oil storage function as claimed in claim 3, characterized in that: Both ends of the sleeve (3) are provided with a plurality of oil inlets (10) located in the cavity (7).

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