CN219030726U - Powder conveying and sealing device - Google Patents

Abstract

A powder conveying sealing device comprises a square bearing seat, an o-shaped sealing ring, a spacer bush, a bearing cushion block, a framework oil seal, an oil distributing ring, an oil injection flange and a transmission shaft. The powder conveying sealing device is arranged at two ends of an input shaft and an output shaft of a powder bin auger; the oiling flange is assembled with the transmission shaft through a positioning sub-port coaxially and is restrained on the wall of the powder bin through a fixing bolt; the oil distributing ring and the framework oil seal are arranged inside the oil injection flange; the o-shaped sealing ring is arranged in a sealing ring in the spacer bush; the square bearing seat is matched with the bearing cushion block and is arranged on the oiling flange, and an external lubricating grease filling hose is arranged on the oiling flange. The powder conveying sealing device adopts a unique double-sealing mode of a reverse double-oil seal and an o-shaped sealing ring, and is provided with a lubricating grease filling hose capable of being externally led, so that the powder conveying sealing device is convenient for later maintenance. The damage caused by external impurities entering the bearing is effectively prevented, the service life is prolonged, the failure rate is reduced, and the bearing has a good practical use effect.

Description

Powder conveying and sealing device

Technical Field

The utility model relates to the technical field of road construction equipment, in particular to a powder conveying and sealing device.

Background

In recent years, along with the rapid development of national highway construction, various powder spreading vehicles for roadbed construction appear on the market, are key equipment matched with the on-site cold regeneration construction of the highway, are special equipment necessary for the construction of roadbed stabilized soil, are suitable for spreading powdery materials such as cement, lime powder, fly ash and the like, and are widely applied to highway and municipal construction.

The powder conveying device is an important part on a powder spreading vehicle, a plurality of groups of parallel augers are generally adopted in the existing powder spreading vehicle for conveying, and as spreading media are powdery materials such as cement, lime powder, fly ash and the like, the flowability of the materials is strong, and materials which are frequently leaked in the powder conveying process enter a bearing at the main shaft end of the powder conveying, so that the bearing is damaged, and equipment is forced to stop. The reliability and maintainability of the spindle seal of the powder conveyor is therefore critical for continuous stable operation of the apparatus. The loss of equipment downtime due to seal failure or maintenance and replacement of wearing parts is also a long-felt pain for the equipment user.

Therefore, the utility model of the powder conveying sealing device capable of solving the problems has important practical significance.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provides a powder conveying sealing device which is simple in structure, good in sealing performance and good in using effect.

The utility model achieves the aim through the following technical scheme:

a powder conveying sealing device comprises a square bearing seat, an o-shaped sealing ring, a spacer bush, a bearing cushion block, a framework oil seal, an oil distributing ring, an oil injection flange and a transmission shaft.

The powder conveying sealing device is arranged at two ends of an input shaft and an output shaft of a powder bin auger.

The oiling flange is assembled with the transmission shaft through a positioning sub-port coaxially and is restrained on the wall of the powder bin through a fixing bolt; the oil injection flange is provided with a lubricating grease filling port, an oil guide pipe, an installation positioning sub-port, an installation hole, a bearing, a gasket installation hole and an oil seal positioning table.

The oil distributing ring and the framework oil seal are arranged inside the oil injection flange. The oil distributing ring is provided with an oil distributing rail, and 4 oil distributing holes are evenly distributed along the circumference; in particular, the two sides of the oil distributing ring are respectively provided with a framework oil seal, the sealing lips of the framework oil seals are installed towards the oil distributing ring, the lip end part of one side of the framework oil seal is flush with the oil seal positioning table of the oil injection flange, and the lip end part of the other side of the framework oil seal is flush with the outer end surface of the oil injection flange.

The o-shaped sealing ring is arranged in the sealing ring in the spacer bush.

The square bearing seat is matched with the bearing cushion block to be installed on the oiling flange, and particularly, one surface of the bearing cushion block is opened and used for discharging impurities overflowing from the transmission shaft so as to prolong the service life of the bearing.

After the assembly of the components is completed, the rear end face of the spacer bush is flush with the lip end part of the framework oil seal, and the front end face of the spacer bush is flush with the bearing bush of the square bearing seat; and finally, the jacking screw on the square bearing seat is matched and screwed with the transmission shaft.

The oiling flange is provided with an external lubricating grease filling hose, and the lubricating grease filling port is led out to a position outside the equipment for convenient operation.

The beneficial effects are that:

the utility model can effectively solve the problems that the leaked materials frequently occur in the powder conveying process enter the bearing at the main shaft end of the powder conveying, so that the bearing damage equipment is forced to stop running, the maintenance and replacement cycle of the vulnerable part is short, the maintenance time is long, the maintenance cost is high and the like. The powder conveying sealing device is simple and reliable in structure, can effectively prevent external impurities from entering the bearing to cause damage in actual use, prolongs the service life of products, reduces the failure rate and the maintenance cost, and has a good actual use effect.

Drawings

FIG. 1 is an exploded view of a powder delivery seal assembly according to the present utility model.

Fig. 2 is a schematic sectional view of an assembled powder conveying and sealing device according to the present utility model.

Fig. 3 is a schematic view of an oil distributing ring of the powder conveying sealing device.

FIG. 4 is a schematic view of a spacer of a powder conveying and sealing device according to the present utility model.

Fig. 5 is a schematic diagram of an oiling flange of a powder conveying sealing device.

Detailed Description

The following further describes the technical scheme of the present utility model through fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5.

Referring to fig. 1-5, the powder conveying sealing device provided by the utility model comprises a square bearing seat 1, an o-shaped sealing ring 2, a spacer bush 3, a bearing cushion block 4, a framework oil seal 5, an oil distributing ring 6, an oil injection flange 7 and a transmission shaft 8.

Referring to fig. 2 and 5, the powder conveying and sealing device is arranged at two ends of an input and output transmission shaft 8 of a powder bin auger; the oiling flange 7 is assembled with the transmission shaft 8 coaxially through the mounting and positioning sub-opening 15 and is fixed on the wall of the powder bin through a fixing bolt; the oiling flange 7 is provided with a lubricating grease filling port 19, an oil guide pipe 17, an installation positioning sub-port 15, an installation hole 14, a bearing and gasket installation hole 16 and an oil seal positioning table 18.

Referring to fig. 2-5, the oil distributing ring 6 and the framework oil seal 5 are arranged inside the oil filling flange 7. The oil distributing ring 6 is provided with an oil distributing rail 12, and 4 oil distributing holes 13 are evenly distributed along the circumference; specifically, the two sides of the oil distributing ring 6 are respectively provided with a framework oil seal 5, the sealing lips of the framework oil seal 5 are installed towards the oil distributing ring 6, the lip end of one framework oil seal 5 is flush with the oil seal positioning table 18 of the oil injection flange 7, and the lip end of the other framework oil seal 5 is flush with the outer end face of the oil injection flange 7; the o-shaped sealing ring 2 is arranged in a sealing ring 9 in the spacer bush 3; the square bearing seat 1 is arranged on the oiling flange 7 in cooperation with the bearing cushion block 4, and particularly, one surface of the bearing cushion block 7 is provided with an opening for discharging powder overflowed from the transmission shaft 8 so as to prolong the service life of the bearing; after the assembly of the components is completed, the rear end face 11 of the spacer bush 3 is flush with the lip end part of the framework oil seal 5, and the front end face 10 is flush with the bearing bush of the square bearing seat 1; and finally, the jacking screw 20 on the square bearing seat is matched and screwed with the transmission shaft 8. The grease filling port 19 of the oil filling flange 7 is provided with an external lubrication and grease change filling hose 20.

Referring to fig. 2 and 5, a process of grease filling for a powder conveying and sealing device will be further described by way of example:

when a powder conveying sealing device is used for filling lubricating grease, a lubricating grease filling gun is connected with the external lubricating grease filling hose 20, the lubricating grease enters an oil guide pipe 17 through a lubricating grease filling port 19 on the oil filling flange, an outlet of the oil guide pipe 17 is arranged above an oil distributing rail 12 of the oil distributing ring 6, after the lubricating grease enters the oil distributing rail 12, the lubricating grease enters a cavity formed between the two oil seals which are reversely assembled and a transmission shaft 8 through an oil distributing hole 13 on the oil distributing ring 6, and the sealing lip of the oil seal which is reversely assembled plays a bidirectional sealing role while playing a role of reducing mechanical transmission friction; particularly, the bearing cushion block 4 with an opening at the bottom is assembled on the mounting surface of the square bearing seat 1, when the oil seal is in service life or the sealing failure of the oil seal is caused by other reasons, a small part of powder in the powder bin can leak along the surface of the transmission shaft 8, the leaked powder can be discharged out of the device through the opening of the bearing cushion block 4, and meanwhile, the o-shaped sealing ring is mounted on the spacer bush 3, so that the damage to the bearing caused by the entry of impurities into the bearing bush of the bearing seat can be effectively avoided by double-layer sealing; importantly, when equipment operators see leaked powder, the equipment can be judged to be sealed and maintained, so that larger mechanical damage is avoided, the maintenance or repair cost is greatly reduced, and the equipment has a better practical use effect.

Claims (4)

1. The utility model provides a sealing device is carried to powder, contains square bearing frame, o type sealing washer, spacer bush, bearing block, skeleton oil blanket, divide the oil ring, oiling flange, transmission shaft, its characterized in that:

the powder conveying sealing device is arranged at two ends of an input shaft and an output shaft of a powder bin auger;

the oiling flange is assembled with the transmission shaft through a positioning sub-port coaxially and is restrained on the wall of the powder bin through a fixing bolt; the oil injection flange is provided with a lubricating grease filling port, an oil guide pipe, an installation positioning sub-port, an installation hole, a bearing, a gasket installation hole and an oil seal positioning table;

the oil distributing ring and the framework oil seal are arranged inside the oil injection flange; the oil distributing ring is provided with an oil distributing rail, and 4 oil distributing holes are evenly distributed along the circumference;

the o-shaped sealing ring is arranged in a sealing ring in the spacer bush;

the square bearing seat is matched with a bearing cushion block and is arranged on the oiling flange.

2. A powder delivery seal as defined in claim 1 wherein:

the oil distributing ring is characterized in that two sides of the oil distributing ring are respectively provided with a framework oil seal, sealing lips of the framework oil seals are installed towards the oil distributing ring, lip ends of one side of the framework oil seal are flush with an oil seal positioning table of the oil injection flange, and lip ends of the other side of the framework oil seal are flush with the outer end face of the oil injection flange.

3. A powder delivery seal as defined in claim 1 wherein: one surface of the bearing cushion block is provided with an opening for discharging impurities overflowing from the transmission shaft so as to prolong the service life of the bearing;

the rear end face of the spacer bush is flush with the lip end part of the framework oil seal, and the front end face of the spacer bush is flush with the bearing bush of the square bearing seat.

4. A powder delivery seal as defined in claim 1 wherein: and the oiling flange is provided with an external lubricating grease filling hose.

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