Shaft end sealing device of roller crusher

By designing a roller crusher shaft end sealing device including oil nozzle and sealing oil tank, the problem of poor sealing of the roller crusher shaft end is solved, good sealing effect and lubrication effect are achieved, and the service life of the seal is extended.

CN222687306UActive Publication Date: 2025-03-28QINGHAI QILIANSHAN CEMENT CO LTD
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Patent Information

Application Number
CN202420969738.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-05-07
Publication Date
2025-03-28
Estimated Expiration
2034-05-07

AI Technical Summary

Technical Problem

When the shaft end sealing device of the roller crusher is working continuously at abnormal positive pressure or the air cannon of the cold machine, some dust will be sprayed out from the shaft end with the airflow, resulting in damage to the seal, poor lubrication, and even damage to the equipment and shutdown.

Method used

A roller crusher shaft end sealing device including a shaft end, a housing and a sealing ring is designed. The sealing ring consists of an upper half ring and a lower half ring, and is fixedly connected by fixing ears and bolts. An oil nozzle and a sealing oil groove are provided on the sealing ring. Sealing packs are provided on both sides of the sealing oil groove, and grease is injected through the oil nozzle to lubricate the sealing pack and the sealing ring.

Benefits of technology

It achieves a good sealing effect, prevents dust from being sprayed out, avoids damage to seals and poor lubrication, extends the service life of sealing packs, and improves the reliability and safety of the equipment.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN222687306U_ABST
    Figure CN222687306U_ABST
Patent Text Reader

Abstract

The utility model discloses a roll crusher shaft end sealing device which comprises a shaft end, a shell and a sealing ring, the sealing ring is arranged on the shaft end on the outer side of the shell, an oil nozzle is arranged on the sealing ring, the oil nozzle penetrates through the sealing ring and is communicated with a sealing oil groove arranged in the sealing ring, grooves are arranged on two sides of the sealing oil groove, and sealing packing is arranged in each groove. The sealing ring is a circular ring formed by splicing and fixing two parts, the sealing ring is divided into an upper half ring and a lower half ring, fixing lugs are arranged at the contact ends of the upper half ring and the lower half ring respectively, and the upper half ring and the lower half ring are fixedly connected through the fixing lugs and bolts. The sealing ring is simple in structure, the two sealing packings are directly installed on original equipment, the sealing oil groove is formed between the two sealing packings, lubricating grease is injected into the sealing oil groove through the oil nozzle, the functions of lubricating the packings and sealing are achieved, aging and failure of the sealing packings caused by high temperature of the roll shaft can be prevented, the sealing effect is good, and the service life is long. And the problem of material leakage at the shaft end of the roller crusher is solved.
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Description

Technical Field

[0001] The utility model relates to the technical field of shaft end sealing, in particular to a shaft end sealing device for a roller crusher. Background Art

[0002] The shaft end seal of the roller crusher is a gap seal. When the system is operating normally, its sealing effect is good. When the system has abnormal positive pressure or the grate cooler air cannon works continuously, some dust will be ejected from the shaft end with the airflow, causing damage to the seal in the bearing box and resulting in poor lubrication. In severe cases, it will cause equipment damage and shutdown; resulting in poor hygiene of the equipment and machine, and there are great safety hazards when manually cleaning up leaked materials. Utility Model Content

[0003] The utility model aims to solve the shortcomings in the prior art and proposes a shaft end sealing device for a roller crusher.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A roller crusher shaft end sealing device comprises a shaft end, a housing and a sealing ring, wherein the sealing ring is arranged outside the housing, the sealing ring is arranged on the shaft end, an oil nozzle is arranged on the sealing ring, the oil nozzle passes through the sealing ring and is connected with a sealing oil groove arranged in the sealing ring, grooves are arranged on both sides of the sealing oil groove, and sealing packings are arranged in the grooves.

[0006] The sealing ring is a circular ring formed by splicing and fixing two parts. The sealing ring is divided into an upper half ring and a lower half ring. The contact ends of the upper half ring and the lower half ring are respectively provided with fixing ears. The upper half ring and the lower half ring are fixedly connected by fixing ears and bolts.

[0007] A sealing groove is arranged on the contact surface between the upper half ring and the lower half ring, and a sealing protrusion is arranged on the contact surface of the lower half ring corresponding to the sealing groove; when the upper half ring and the lower half ring are spliced ​​and connected, the sealing protrusion is inserted into the sealing groove to play a sealing role and prevent oil leakage.

[0008] The sealing groove and the sealing protrusion surround the sealing oil groove and the sealing packing on the contact surfaces of the upper half ring and the lower half ring.

[0009] The oil nozzle is arranged on the top of the upper half ring, and the oil nozzle is connected to the oil pipe to inject oil into the oil groove to play a sealing role; at the same time, it plays a lubricating role for the sealing packing.

[0010] The beneficial effects of the utility model are as follows: the structure is simple, and it can be directly installed on the original equipment, which is convenient and quick. Two sealing packings are installed in the sealing ring, and a sealing oil groove is designed between the two sealing packings. Grease is injected into the sealing oil groove through the oil nozzle to lubricate the packing and seal. It can prevent the sealing packing from aging and failure due to the high temperature of the roller shaft. The sealing effect is good, and the problem of material leakage at the shaft end of the roller crusher is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a cross-sectional structural diagram of the utility model;

[0012] Figure 2 It is the front view of the utility model;

[0013] Figure 3 This is a contact surface diagram of the upper and lower sealing rings of the utility model;

[0014] In the figure: 1, shaft end; 2, housing; 3, sealing ring; 31, upper half ring; 311, sealing groove; 32, lower half ring; 321, sealing protrusion; 33, fixing ear; 34, bolt; 4, oil nozzle; 5, sealing oil groove; 6, sealing packing A; 7, sealing packing B. DETAILED DESCRIPTION

[0015] Example 1

[0016] like Figure 1-3 As shown, the utility model provides a shaft end sealing device for a roller crusher, and its structure is as follows: it includes a shaft end 1, a housing 2 and a sealing ring 3, the sealing ring 3 is arranged outside the housing 2, the sealing ring 3 is arranged on the shaft end 1, an oil nozzle 4 is arranged on the sealing ring 3, the oil nozzle 4 penetrates the sealing ring 3 and is communicated with a sealing oil groove 5 arranged in the sealing ring 3, the oil nozzle 4 is arranged on the top of the upper half ring 31, the oil nozzle 4 is connected to the oil pipe, and oil is injected into the oil groove to play a sealing role; at the same time, it plays a lubricating role for the sealing packing;

[0017] Grooves are provided on both sides of the sealing oil groove 5, and sealing packings are provided in the grooves. A sealing packing A6 is provided on one side of the sealing oil groove 5, and a sealing packing B7 is provided on the other side of the sealing oil groove 5;

[0018] The sealing ring 3 is a circular ring formed by splicing and fixing two parts. The sealing ring 3 is divided into an upper half ring 31 and a lower half ring 32. The contact ends of the upper half ring 31 and the lower half ring 32 are respectively provided with fixing ears 33. The upper half ring 31 and the lower half ring 32 are fixedly connected by the fixing ears 33 and bolts 34. A sealing groove 311 is provided on the contact surface between the upper half ring 31 and the lower half ring 32, and a sealing protrusion 321 is provided on the contact surface of the lower half ring 32 corresponding to the sealing groove 311. When the upper half ring 31 and the lower half ring 32 are spliced ​​and connected, the sealing protrusion 321 is inserted into the sealing groove 311, and the sealing groove 311 and the sealing protrusion 321 surround the sealing oil groove 5 and the sealing packing on the contact surface of the upper half ring 31 and the lower half ring 32.

[0019] Specifically, it is directly installed on the original equipment, installed on the outside of the shell, fixed on the shell, the sealing device is clamped on the shaft end, two sealing packings are installed in the sealing ring 3, and grease is injected into the sealing oil groove 5 between the two sealing packings through the oil nozzle 4 to lubricate the packing and seal, which can prevent the sealing packing from aging and failure due to the high temperature of the roller shaft, and the sealing effect is good.

Claims

1. A roller crusher shaft end sealing device, characterized in that: It includes a shaft end, a shell and a sealing ring. The sealing ring is arranged on the outside of the shell, the sealing ring is arranged on the shaft end, an oil nozzle is arranged on the sealing ring, the oil nozzle passes through the sealing ring and is connected with a sealing oil groove arranged in the sealing ring, grooves are arranged on both sides of the sealing oil groove, and sealing packings are arranged in the grooves.

2. The roller crusher shaft end sealing device according to claim 1, characterized in that: The sealing ring is a circular ring formed by splicing and fixing two parts. The sealing ring is divided into an upper half ring and a lower half ring. The contact ends of the upper half ring and the lower half ring are respectively provided with fixing ears. The upper half ring and the lower half ring are fixedly connected by fixing ears and bolts.

3. The roller crusher shaft end sealing device according to claim 2, characterized in that: A sealing groove is arranged on the contact surface between the upper half ring and the lower half ring, and a sealing protrusion is arranged on the contact surface of the lower half ring corresponding to the sealing groove; when the upper half ring and the lower half ring are spliced ​​and connected, the sealing protrusion is inserted into the sealing groove to play a sealing role and prevent oil leakage.

4. A roller crusher shaft end sealing device according to claim 3, characterized in that: The sealing groove and the sealing protrusion surround the sealing oil groove and the sealing packing on the contact surfaces of the upper half ring and the lower half ring.

5. The roller crusher shaft end sealing device according to claim 2, characterized in that: The oil nozzle is arranged on the top of the upper half ring.