CN211870550U - Rotary airtight structure at shaft end of screw conveyor - Google Patents

Abstract

The utility model relates to a rotatory airtight structure of screw conveyer shaft end belongs to screw conveyer equipment technical field. The utility model provides a sealed not tight that current screw conveyer's axle head exists, the bearing is easy to be stuck and is lost, the problem that needs often to be changed. The utility model discloses a main shaft, the main shaft rear end is equipped with back link, tailshaft, the front end of tailshaft is equipped with the front connection end, still includes: the bearing body assembly is arranged at the front part of the main shaft and provides rotary guide support for the main shaft; the mounting plate is arranged at the rear part of the main shaft, and the main shaft penetrates through the mounting plate; prevent that the material from entering along the main shaft the airtight structure of mounting panel front side, airtight structure establishes the front side and the suit of mounting panel are in on the main shaft.

Description

Rotary airtight structure at shaft end of screw conveyor

Technical Field

The utility model relates to a rotatory airtight structure of screw conveyer shaft end belongs to screw conveyer equipment technical field.

Background

The spiral conveyor is widely applied to material transmission in mine and metallurgy industries, the materials are conveyed in a spiral auger mode, the shaft end needs to be matched with a bearing to rotate stably, and in the operation process, as the bearing still has partial circumferential swing during rotation, smaller materials can escape into an operation environment through a swinging gap and a gap between sealing pieces, the air quality is influenced, and meanwhile, the materials are wasted;

meanwhile, materials enter a bearing gap to influence the operation of the bearing, so that the service life of the bearing is shortened, frequent replacement is needed, and the cost is increased;

during rotary motion, because the circumference swing of bearing, influence the operating stability of auger, the transportation effect is not good, and the transportation volume can't accurate control.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the above-mentioned defect that current screw conveyer axle head exists, a screw conveyer axle head rotation airtight structure is proposed, provide the environment of malleation for inner seal cavity through airtight structure, prevent that the transmission material from running out, thereby improve the life of bearing, the front end of bearing sets up the oil blanket, and through the bearing frame cladding, further prevent the loss of bearing, main shaft and tailshaft all are equipped with bearing body subassembly, bearing body subassembly through both ends can make rotatory operation more steady, do benefit to the control of auger to material transportation volume.

The utility model discloses an adopt following technical scheme to realize:

the utility model provides a rotatory airtight structure of screw conveyer axle head, includes the main shaft, the main shaft rear end is equipped with back link, tailshaft, the front end of tailshaft is equipped with preceding link, still includes:

the bearing body assembly is arranged at the front part of the main shaft and provides rotary guide support for the main shaft;

the mounting plate is arranged at the rear part of the main shaft, and the main shaft penetrates through the mounting plate;

the air-tight structure is used for preventing materials from entering the front side of the mounting plate along the main shaft, is arranged on the front side of the mounting plate and is sleeved on the main shaft;

the air-tight structure comprises a sealing body fixed on the mounting plate, sealing filler is arranged at the front end of the inner side of the sealing body, an air pressure sealing element is arranged at the rear end of the sealing filler, an inner inflation cavity is arranged between the air pressure sealing element and the main shaft, an inflation cavity is arranged between the air pressure sealing element and the sealing body and is communicated with the inner inflation cavity, the inflation cavity is also communicated with an inflation device through an air inlet arranged on the sealing body, and the sealing filler is arranged at the rear end of the air pressure sealing element;

the bearing body assembly, the mounting plate and the airtight structure are symmetrically arranged on the tail shaft.

The bearing body components on the main shaft and the tail shaft are correspondingly arranged, partial gaps caused by circular motion of the shaft can be eliminated, the main shaft and the airtight structure are sealed more tightly, the bearing runs more stably, the airtight structure provides working gas pressure higher than a material conveying end for the inflating cavity and the inner inflating cavity through the inflating device, and therefore the material is guaranteed not to be discharged out of the screw conveyor along the main shaft from the inner side.

Preferably, the front end of the sealing body is provided with a gland, the inner side of the gland extends into the sealing body and is in contact with and pressed against the sealing packing at the front end, and the gland is fixed at the front end of the sealing body through a bolt.

Preferably, the bearing body subassembly include the bearing frame, be equipped with the multiunit bearing in the bearing frame, the rear end inboard of bearing frame is equipped with the skeleton oil blanket, the front end of bearing frame is equipped with sealed lid, through the skeleton oil blanket better for the bearing provide sealed, further avoid the dust to enter into the bearing inboard to extension bearing life improves the stability when bearing uses.

Preferably, a gap is arranged between the gland flange edge and the sealing body. The gland can be better pressed on the sealing body through the bolt, and the sealing pressure is extruded on the sealing filler, so that the sealing effect of the sealing filler is better.

Preferably, a Y-shaped sealing ring is further arranged between the inner side of the air pressure sealing element and the main shaft. The Y-shaped sealing ring has fewer contact points with the main shaft, so that the resistance is smaller while the sealing performance is ensured.

Preferably, the number of the Y-shaped sealing rings is two, and the two Y-shaped sealing rings can better prevent dust from leaking outwards along the main shaft.

Preferably, the inner side of the sealing filler is arranged in a corrugated manner, the corrugated arrangement can be better matched with a main shaft for sealing, and the friction force required to be overcome by the rotation of the main shaft is also larger.

The utility model has the advantages that:

(1) the shaft end rotating airtight structure of the screw conveyer provided by the utility model has the advantages that the main shaft and the tail shaft rotate through the bearing body assembly, the rotation is stably controlled through the bearing in the front and back directions, the circumferential swing of the bearing is eliminated, the auger operates stably, and the transportation volume is more easily and accurately controlled;

(2) the shaft end rotating airtight structure of the screw conveyer is provided with the airtight structure, and the pressure higher than the auger side is provided for the inflating cavity and the inner inflating cavity through the inflating device, so that the material dust is prevented from escaping from the inflating cavity and the inner inflating cavity along the main shaft and the tail shaft, the air quality is improved, and the working environment where an operator is located is more superior;

(3) screw conveyer shaft end rotation airtight structure, be provided with the bearing end and be equipped with the skeleton oil blanket, reduce the dust volume that enters into in the bearing, improve the life and the work efficiency of bearing.

Drawings

Fig. 1 is a front view of a spindle end according to an embodiment of the present invention;

FIG. 2 is an enlarged view of a portion A of FIG. 1;

FIG. 3 is a cross-sectional view of a seal packing in accordance with an embodiment of the present invention;

FIG. 4 is a front view of the trailing axle end of an embodiment of the present invention;

fig. 5 is a usage state diagram of the embodiment of the present invention;

in the figure: 1. a main shaft; 2. a bearing; 3. a bearing seat; 4. a gland; 5. sealing and filling; 6. a pneumatic seal; 7, a Y-shaped sealing ring; 8. an air inlet; 9. an inflation cavity; 10. a seal body; 11. an inner inflation cavity; 12. mounting a plate; 13. an inflator; 14. a tail shaft.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

As shown in fig. 1-4, a rotatory airtight structure of screw conveyer axle head, including main shaft 1, 1 rear end of main shaft is equipped with back link, tailshaft 14, the front end of tailshaft 14 is equipped with the front connection end, is equipped with the material transmission auger between tailshaft 14 and the main shaft 1, still includes:

the bearing body assembly is arranged at the front part of the main shaft 1 and provides rotary guide support for the main shaft;

a mounting plate 12 arranged at the rear part of the main shaft 1, wherein the main shaft 1 penetrates through the mounting plate 12;

the air-tight structure is used for preventing materials from entering the front side of the mounting plate 12 along the main shaft 1, is arranged on the front side of the mounting plate 12 and is sleeved on the main shaft 1;

the air-tight structure comprises a sealing body 10 fixed on a mounting plate 12, a sealing filler 5 is arranged at the front end of the inner side of the sealing body 10, an air pressure sealing element 6 is arranged at the rear end of the sealing filler 5, an inner inflation cavity 11 is arranged between the air pressure sealing element 6 and the main shaft 1, an inflation cavity 9 is arranged between the air pressure sealing element 6 and the sealing body 10, the inflation cavity 9 is communicated with the inner inflation cavity 11, the inflation cavity 9 is also communicated with an inflation device 13 through an air inlet 8 arranged on the sealing body 10, and the sealing filler 5 is arranged at the rear end of the air pressure sealing element 6; and the tail shaft 14 is sequentially provided with a mounting plate 12, an airtight structure and a bearing body assembly.

The front end of the sealing body 10 is provided with a gland 4, the inner side of the gland 4 extends into the sealing body 10 and is in contact with and pressed against the sealing packing 5 at the front end, and the gland 4 is fixed at the front end of the sealing body 10 through bolts.

The bearing body assembly comprises a bearing seat 3, a plurality of groups of bearings 2 are arranged in the bearing seat 3, a framework oil seal is arranged on the inner side of the rear end of the bearing seat 3, and a sealing cover is arranged at the front end of the bearing seat 3.

And a gap is arranged between the flange edge of the gland 4 and the sealing body 10.

And a Y-shaped sealing ring 7 is also arranged between the inner side of the air pressure sealing element 6 and the main shaft 1.

And two Y-shaped sealing rings 7 are arranged.

The inner side of the sealing filler 5 is arranged in a corrugated manner.

The utility model discloses a use as follows:

when the dust-proof device is used, positive pressure is provided for the inflation cavity 9 and the internal inflation cavity 11 through the inflation device 13 to form a positive pressure air chamber, and dust is prevented from escaping out along with the main shaft 1 and the tail shaft 14 by the positive pressure air chamber, so that the working environment is protected;

avoid in the dust gets into bearing 2, improve bearing 2's life, the front end of bearing 2 sets up the oil blanket to through the cladding of bearing frame 3, further prevent bearing 2's loss, main shaft 1 and tailshaft 14 all are equipped with the bearing body subassembly, can make rotatory operation more steady through the bearing body subassembly at both ends, do benefit to the control of auger to material transportation volume.

The utility model discloses mainly apply to screw conveyer and carry out the sealed place of screw axis transmission.

Of course, the above description is only a preferred embodiment of the present invention, and should not be taken as limiting the scope of the embodiments of the present invention. The present invention is not limited to the above examples, and the technical field of the present invention is equivalent to the changes and improvements made in the actual range of the present invention, which should be attributed to the patent coverage of the present invention.

Claims (7)

1. A rotary airtight structure at the shaft end of a screw conveyor comprises a main shaft (1), wherein the rear end of the main shaft (1) is provided with a rear connection

End, tailshaft (14), the front end of tailshaft (14) is equipped with preceding link, its characterized in that still includes:

the bearing body assembly is arranged at the front part of the main shaft (1) and provides rotary guide support for the main shaft;

the mounting plate (12) is arranged at the rear part of the main shaft (1), and the main shaft (1) penetrates through the mounting plate (12);

prevent that the material from entering along main shaft (1) airtight structure of mounting panel (12) front side, airtight structure establishes

The front side of the mounting plate (12) is sleeved on the main shaft (1);

the airtight structure comprises a sealing body (10) fixed on a mounting plate (12), a sealing filler (5) is arranged at the front end of the inner side of the sealing body (10), an air pressure sealing element (6) is arranged at the rear end of the sealing filler (5), and the air pressure sealing element (6)

An inner inflation cavity (11) is arranged between the main shaft (1) and the air pressure sealing element (6), an inflation cavity (9) is arranged between the air pressure sealing element (6) and the sealing body (10), the inflation cavity (9) is communicated with the inner inflation cavity (11), the inflation cavity (9) is also communicated with an inflation device (13) through an air inlet (8) arranged on the sealing body (10), and the rear end of the air pressure sealing element (6) is provided with a sealing filler (5);

the bearing body assembly, the mounting plate (12) and the air-tight structure are symmetrically arranged on the tail shaft (14).

2. The auger shaft end rotary gas seal as defined in claim 1, wherein: the sealing body (10)

The front end of the sealing body is provided with a gland (4), the inner side of the gland (4) extends into the sealing body (10) and is in contact with and pressed against the sealing packing (5) at the front end, and the gland (4) is fixed at the front end of the sealing body (10) through bolts.

3. The auger shaft end rotary gas seal as defined in claim 2, wherein: the bearing body group

The part includes bearing frame (3), be equipped with multiunit bearing (2) in bearing frame (3), the rear end inboard of bearing frame (3) is equipped with the skeleton oil blanket, the front end of bearing frame (3) is equipped with sealed lid.

4. The screw conveyor shaft end rotary air-tight structure according to claim 2 or 3, wherein: the gland

(4) A gap is arranged between the flange edge and the sealing body (10).

5. The auger shaft end rotary gas seal as defined in claim 4, wherein: the air pressure seal

A Y-shaped sealing ring (7) is also arranged between the inner side of the piece (6) and the main shaft (1).

6. The auger shaft end rotary gas seal as defined in claim 5, wherein: the Y-shaped seal

Two rings (7) are arranged.

7. The auger shaft end rotary gas seal as defined in claim 6, wherein: the sealing filler

(5) The inner side is arranged in a corrugated manner.

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