CN213264323U

CN213264323U - Shaft seal structure of chain wheel box of pipe chain conveyor

Info

Publication number: CN213264323U
Application number: CN202021471845.6U
Authority: CN
Inventors: 黄绍祥; 庞博湛; 孙春光; 李海平
Original assignee: Rianlon Corp; Li'an Longkerun Zhejiang New Material Co ltd
Current assignee: Rianlon Corp; Li'an Longkerun Zhejiang New Material Co ltd
Priority date: 2020-07-23
Filing date: 2020-07-23
Publication date: 2021-05-25
Anticipated expiration: 2030-07-23

Abstract

The invention provides a shaft seal structure of a sprocket box of a pipe chain conveyor, which comprises a box body, wherein bearings matched with a main shaft are respectively arranged in shaft seats at two sides of the box body; a second sealing assembly and a first sealing assembly are sequentially arranged inside the shaft seat from the side of the bearing to the side of the chain wheel, and a buffer area is arranged between the first sealing assembly and the second sealing assembly. The invention fundamentally solves the risk of mutual pollution of the sealing oil product and the materials, reduces the maintenance cost, has low maintenance frequency and ensures the stable production. In the process of regularly opening the ash receiving hopper for cleaning, whether the condition that the oil seal fails exists can be visually judged so as to be timely processed and ensure that the equipment can normally operate and the production can be smoothly carried out.

Description

Shaft seal structure of chain wheel box of pipe chain conveyor

Technical Field

The invention belongs to the technical field of material conveying equipment, and particularly relates to a shaft seal structure of a sprocket box of a pipe chain conveyor.

Background

The working principle of the pipe chain conveyor is that a main shaft and a chain wheel are driven to rotate by starting a chain box driving motor, and the chain wheel drives a chain disc and a chain to move, so that materials are lifted and conveyed. In the prior art, the shaft seal structure of the chain wheel box is provided with a skeleton oil seal on the inner side of the box body so as to avoid mutual contact and pollution of materials and internal oil. But the defect that exists is, after the framework oil blanket became invalid, inside the material can get into the bearing seal, the time will make the oil play the lubrication action for a long time, causes to damage the bearing, in addition, the framework bearing seal became invalid, if the oil leaks to the material side in the bearing seal, then still can pollute the material, leads to the material quality to receive the influence.

Disclosure of Invention

In view of this, the present invention provides a shaft seal structure for a chain case of a pipe chain conveyor, which aims to overcome the defects in the prior art.

In order to achieve the purpose, the technical scheme of the invention is realized as follows:

a shaft seal structure of a sprocket box of a pipe chain conveyor comprises a box body, wherein bearings matched with a main shaft are respectively arranged in shaft seats on two sides of the box body; inside the shaft seat, a second sealing assembly and a first sealing assembly are arranged in sequence from the bearing side to the chain wheel side, and a buffer area is arranged between the first sealing assembly and the second sealing assembly.

Further, the inner wall of the shaft seat is provided with a first installation section and a second installation section, the first sealing assembly is installed on the first installation section, and the second sealing assembly is installed on the second installation section.

Further, the diameter of the first mounting section is larger than that of the second mounting section, and a first positioning step is formed between the first mounting section and the second mounting section; one end of the second mounting section, which is close to the chain wheel, is provided with a second positioning step.

Furthermore, first seal assembly includes first skeleton oil blanket, and second location step is supported by first skeleton oil blanket one side, and the opposite side is fixed by chucking spare.

Further, the first sealing assembly comprises two first framework oil seals arranged side by side.

Further, the second sealing assembly comprises a fixed sleeve and a second framework oil seal arranged on the fixed sleeve; one side of the fixed sleeve is propped against the first positioning step, and the other side of the fixed sleeve is propped against the bearing.

Furthermore, the buffer area comprises a buffer storage bin which is arranged between the first sealing component and the second sealing component on the shaft seat, an ash receiving hopper is fixed at the lower end of the shaft seat corresponding to the buffer storage bin, and the upper end of the ash receiving hopper is communicated with the buffer storage bin.

Furthermore, the fixed sleeve is provided with a third positioning table for fixing the second framework oil seal, and one end of the fixed sleeve, which is different from the end provided with the third positioning table, is provided with a boss for abutting against the bearing.

Further, the ash receiving hopper comprises a barrel welded on the shaft seat and a hopper body detachably mounted at the lower end of the barrel.

Further, the lower end of the cylinder body is provided with an upper connecting flange, the upper end of the bucket body is provided with a lower connecting flange, and the upper connecting flange and the lower connecting flange are connected through a connecting piece.

Compared with the prior art, the invention has the following advantages:

the buffering bin designed in the invention is used as a buffering area, and materials leaked from the chain wheel side or oil leaked from the bearing side enter the buffering bin first and then fall into the ash receiving hopper, so that adverse effects cannot be caused directly even if sealing failure occurs, the risk of mutual pollution of the sealed oil and the materials is fundamentally solved, the maintenance cost is reduced, the maintenance frequency is low, and the stable production is ensured. In the process of regularly opening the ash receiving hopper for cleaning, whether the condition that the oil seal fails exists can be visually judged so as to be convenient for timely treatment, and the normal operation and the smooth production of equipment are ensured.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the invention without limitation. In the drawings:

FIG. 1 is a schematic structural diagram of the present invention;

FIG. 2 is an enlarged view of the structure at A in FIG. 1;

FIG. 3 is a schematic view of an ash receiving hopper in an embodiment of the present invention;

FIG. 4 is an enlarged view of the structure at B in FIG. 1;

FIG. 5 is a schematic view of FIG. 4 with the first and second seal assemblies removed.

Description of reference numerals:

1-a box body; 2-shaft seat; 3-a main shaft; 4-a bearing; 5-a first seal assembly; 6-a second seal assembly; 7-a connector; 8-a cache region; 9-a backstop; 10-a delinking alarm structure; 11-a cache bin; 12-ash receiving hopper; 13-a first mounting section; 14-a second mounting section; 15-a first positioning step; 16-a second positioning step; 17-a first framework oil seal; 18-a clip; 19-fixing the sleeve; 20-a second framework oil seal; 21-a third positioning table; 22-a boss; 23-a barrel body; 24-a bucket body; 25-upper connecting flange; 26-a lower connecting flange; 27-a drive mechanism; 28-sprocket.

Detailed Description

It should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings, which are merely for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting the invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the invention, the meaning of "a plurality" is two or more unless otherwise specified.

In the description of the invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "connected" and "connected" are to be construed broadly, e.g. as being fixed or detachable or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the creation of the present invention can be understood by those of ordinary skill in the art through specific situations.

The invention will be described in detail with reference to the following embodiments with reference to the attached drawings.

A shaft seal structure of a chain wheel box of a pipe chain conveyor is shown in figures 1 to 5 and comprises a box body 1, wherein shaft seats 2 on two sides of the box body are respectively provided with a bearing 4 matched with a main shaft 3; inside the shaft seat, from the bearing side to the sprocket side, a second seal assembly 6 and a first seal assembly 5 are arranged in sequence, and a buffer zone 8 is arranged between the first seal assembly and the second seal assembly.

In the chain wheel box, a chain wheel 28 is fixedly arranged on a main shaft, and two ends of the main shaft are respectively arranged on a shaft seat through bearings. The backstop 9 is installed at one end of the main shaft, the driving mechanism 27 is installed at the other end, generally, the driving mechanism adopts a motor (and a reducer), and in addition, the chain-off alarm structure 10 is also installed on the box body generally. The chain-off alarming structure is used for preventing a chain and a chain disc from falling off from a chain wheel, realizing alarming and stopping and preventing equipment from being damaged; the backstop is to prevent the chain wheel from reversing and damaging the equipment. The innovation of the present invention is in the sealing structure part, which is the prior art content, and is only for the purpose of illustrating the working mode and the basic structure part of the device, and therefore, not described in much detail.

Specifically, the inner wall of the shaft seat is provided with a first mounting section 13 and a second mounting section 14, the first sealing assembly is mounted on the first mounting section, and the second sealing assembly is mounted on the second mounting section. Generally, the diameter of the first mounting section is larger than that of the second mounting section, and a first positioning step 15 is formed between the first mounting section and the second mounting section; one end of the second mounting section close to the chain wheel is provided with a second positioning step 16.

The first seal assembly includes a first frame oil seal 17 having one side abutting the second positioning step and the other side secured by a retainer 18. The second sealing component comprises a fixed sleeve 19 and a second framework oil seal 20 arranged on the fixed sleeve; one side of the fixed sleeve props against the first positioning step, and the other side of the fixed sleeve props against the bearing (the outer ring). The clamping piece in the first sealing assembly can adopt a spring clamping ring, and a clamping groove for mounting the spring clamping ring is arranged on the first mounting section. By way of example, the first seal assembly includes two first framework oil seals arranged side by side.

In an optional embodiment, the buffer area includes a buffer storage bin 11 on the shaft seat between the first sealing component and the second sealing component, an ash receiving hopper 12 is fixed at the lower end of the shaft seat corresponding to the buffer storage bin, and the upper end of the ash receiving hopper is communicated with the buffer storage bin. It should be noted that the buffer bin is a hole or a groove formed on the shaft seat, the buffer bin may be an open structure, both ends of the upper end of the buffer bin are through, or only the lower part of the buffer bin is through (communicated with the ash receiving hopper).

The invention creates a middle bearing in an external form, a second sealing assembly is used as a bearing side seal, a first sealing assembly is used as a material side seal, the material side seal is separated from the bearing side seal, and a cavity at one end, namely a buffer bin 11, is arranged between the two seals. When the framework seal close to the inner cylinder side fails, the material enters the buffer bin without polluting oil products, so that the failure of the bearing is caused; when the bearing side framework oil seal is invalid, oil leaks to enter the buffer bin, and the risk of material pollution is avoided. The ash receiving hopper 12 of the buffer bin is opened regularly, leaked materials and oil products can be cleaned, and the integrity of sealing is convenient to check.

The fixing sleeve is provided with a third positioning table 21 for fixing the second framework oil seal, and one end of the fixing sleeve, which is different from the end provided with the third positioning table, is provided with a boss 22 for abutting against a bearing (outer ring). For example, as shown in fig. 5, the ash receiving hopper includes a cylinder 23 welded on a shaft seat, and a hopper body 24 detachably mounted at the lower end of the cylinder.

In an alternative embodiment, the lower end of the cylinder is provided with an upper connecting flange 25, the upper end of the bucket body is provided with a lower connecting flange 26, and the upper connecting flange and the lower connecting flange are connected through a connecting piece 7. For example, the upper and lower connecting flanges are correspondingly provided with connecting holes, and connecting members (such as bolts or screws) are inserted into the connecting holes for fixing. The material or the oil that need the clearance to leak out demolish the connecting piece, take down and connect the ash bucket and can clear up, it is very convenient.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the invention, so that any modifications, equivalents, improvements and the like, which are within the spirit and principle of the present invention, should be included in the scope of the present invention.

Claims

1. A shaft seal structure of a sprocket box of a pipe chain conveyor comprises a box body, wherein bearings matched with a main shaft are respectively arranged in shaft seats on two sides of the box body; the method is characterized in that: inside the shaft seat, a second sealing assembly and a first sealing assembly are sequentially arranged from the bearing side to the chain wheel side, and a buffer area is arranged between the first sealing assembly and the second sealing assembly.

2. The shaft seal structure of the sprocket box of the pipe chain conveyor according to claim 1, wherein: the inner wall of the shaft seat is provided with a first mounting section and a second mounting section, the first sealing assembly is mounted on the first mounting section, and the second sealing assembly is mounted on the second mounting section.

3. The shaft seal structure of the sprocket box of the pipe chain conveyor according to claim 2, wherein: the diameter of the first mounting section is larger than that of the second mounting section, and a first positioning step is formed between the first mounting section and the second mounting section; one end of the second mounting section, which is close to the chain wheel, is provided with a second positioning step.

4. The shaft seal structure of the sprocket box of the pipe chain conveyor according to claim 3, wherein: the first sealing assembly comprises a first framework oil seal, one side of the first framework oil seal is abutted against the second positioning step, and the other side of the first framework oil seal is fixed by the clamping piece.

5. The shaft seal structure of the sprocket box of the pipe chain conveyor according to claim 4, wherein: the first sealing assembly comprises two first framework oil seals which are arranged side by side.

6. The shaft seal structure of the sprocket box of the pipe chain conveyor according to claim 2, wherein: the second sealing assembly comprises a fixed sleeve and a second framework oil seal arranged on the fixed sleeve; one side of the fixed sleeve is propped against the first positioning step, and the other side of the fixed sleeve is propped against the bearing.

7. The shaft seal structure of the sprocket box of the pipe chain conveyor according to any one of claims 1 to 6, wherein: the buffer area comprises a buffer storage bin which is arranged between the first sealing component and the second sealing component on the shaft seat, an ash receiving hopper is fixed at the lower end of the shaft seat corresponding to the buffer storage bin, and the upper end of the ash receiving hopper is communicated with the buffer storage bin.

8. The shaft seal structure of the sprocket box of the pipe chain conveyor according to claim 6, wherein: the fixed sleeve is provided with a third positioning platform for fixing the second framework oil seal, and a boss for abutting against the bearing is arranged at one end of the fixed sleeve different from the end provided with the third positioning platform.

9. The shaft seal structure of the sprocket box of the pipe chain conveyor according to claim 7, wherein: the ash receiving hopper comprises a barrel welded on the shaft seat and a hopper body detachably mounted at the lower end of the barrel.

10. The shaft seal structure of the sprocket box of the pipe chain conveyor according to claim 9, wherein: the bucket is characterized in that an upper connecting flange is arranged at the lower end of the barrel, a lower connecting flange is arranged at the upper end of the bucket body, and the upper connecting flange and the lower connecting flange are connected through a connecting piece.