CN218954025U

CN218954025U - Improved generation powder is carried rotatory axle head and is sealed

Info

Publication number: CN218954025U
Application number: CN202223159707.6U
Authority: CN
Inventors: 刘林
Original assignee: Jiangsu Weishi Environmental Engineering Co ltd
Current assignee: Jiangsu Weishi Environmental Engineering Co ltd
Priority date: 2022-11-28
Filing date: 2022-11-28
Publication date: 2023-05-02
Anticipated expiration: 2032-11-28

Abstract

The utility model relates to the technical field of rotary shaft end sealing, and discloses an improved powder conveying rotary shaft end seal, which mainly comprises a packing seat, a graphite copper sleeve, a graphite packing, a gland, a compression adjusting screw and a back blowing air tap, wherein the powder conveying rotary shaft end seal is arranged on one side of a conveyor main body, the conveyor main body comprises a rotary shaft and a conveying cylinder, and the powder conveying rotary shaft end seal is arranged at a position where the rotary shaft is connected with the conveying cylinder; according to the improved powder conveying rotary shaft end seal, the tightness degree of the graphite packing is changed by adjusting the adjusting screw under the extrusion of the gland, so that zero leakage is achieved. The graphite copper sleeve is used as a first sealing defense line, and the plurality of graphite packing is used as a second sealing; if the interior of the conveying cylinder is positive pressure, compressed air can be used for connecting a back blowing nozzle, and regular maintenance and adjustment of a gland screw are added, so that zero leakage high sealing of the rotating shaft end is achieved.

Description

Improved generation powder is carried rotatory axle head and is sealed

Technical Field

The utility model relates to the technical field of sealing, in particular to an improved powder conveying rotary shaft end seal.

Background

Powder screw conveyors are one of the most popular categories of screw conveyors, and are materials handling machines that continuously convey materials on a line, and are also referred to as continuous powder screw conveyors. The powder screw conveyor is used for conveying chemical industry products, such as powder or solid particles with higher temperature, and building materials. The inside of the screw conveyor is provided with a conveying pipe, and the blades are spirally welded on the conveying pipe. The rotating spiral blade pushes the material to be conveyed by the spiral conveyor, so that the force for preventing the material from rotating together with the spiral conveyor blade is the weight of the material and the friction resistance of the spiral conveyor shell to the material, the spiral blade is welded on the rotating shaft, and the surface shape of the blade has the solid surface shape, the belt surface shape, the blade surface shape and other forms according to the difference of the conveyed material. The spiral shaft of the U-shaped groove type spiral conveyor is provided with a thrust bearing at the terminal of the material moving direction so as to give axial counterforce to the spiral along with the material, and when the machine length is longer, a middle hanging bearing is added.

The powder screw conveyor can carry out horizontal and inclined vertical conveying, and the conveying can also form a space conveying line, and the conveying line of the powder screw conveyor is generally fixed. The powder screw conveyor has large conveying capacity and long conveying distance, and can finish a plurality of process operations in the conveying process, so that the powder screw conveyor is very popular in application. The powder screw conveyor can be used for conveying a single powder, and can also be used for forming a horizontal or inclined conveying system with other conveying equipment by a plurality of powder screw conveyors, so that the requirements of working lines with different arrangement forms can be met.

Screw conveyors are widely used in various industrial sectors, such as building materials, electric power, chemical industry, metallurgy, coal, aluminum magnesium, machinery, light industry, grain and food industries, and are suitable for conveying powdery, granular and small-block materials such as cement, coal dust, grain, fertilizer, ash, sand and the like at an inclination angle of 20 degrees or less and at a temperature below 200 ℃.

Screw conveyors are not suitable for transporting easily spoiled, sticky, easily agglomerated materials because the materials stick to the screw during transport and rotate with the screw without moving forward or forming a plug of material at the hanger bearing, which can prevent the screw from working properly.

The spiral diameter is from 200 mm to 500 mm, five specifications are adopted, the length is from 4 m to 70 m, every 0.5 material grade, the standard nominal length is met during selection, and special requirements can be additionally provided in the selection of the matching section.

Spiral conveyor working principle:

when the screw shaft rotates, the material can only move forward along the bottom of the conveyor under the pushing of the blades due to the gravity of the material and the friction force generated by the material and the wall of the groove, and the material is moved in the middle bearing by the pushing force of the material advancing in the rear direction, so that the material is completely in sliding motion in the conveyor.

The rotating screw blade pushes and conveys the material, and the force for preventing the material from rotating together with the screw conveyor blade is the self weight of the material and the friction resistance of the screw conveyor shell to the material.

However, compared with other materials such as granules, the powder has the characteristics of small granularity and good fullness, and the sealing of the rotating shaft of the powder screw conveyor is extremely difficult. At present, in the fields of domestic construction, chemical industry, medicine and the like, the sealing of a rotary shaft of a powder screw conveyor is mostly achieved by adopting a mechanical sealing mode of a sealing gasket, and most sealing effects are poor, so that leakage is caused, and bearing abrasion is serious.

Therefore, there is a strong need for an improved powder delivery spin shaft end seal that addresses the above-described deficiencies.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides an improved powder conveying rotary shaft end seal, which solves the problems that the sealing of the rotary shaft of the traditional powder spiral conveyor is mainly realized by adopting a mechanical sealing mode of a sealing gasket, and the sealing effect is poor, so that leakage is caused, and the bearing is seriously worn.

The utility model provides the following technical scheme: the utility model provides a rotatory axle head is carried to improved generation powder, this powder carries rotatory axle head to be sealed mainly by packing seat, graphite copper sheathing, graphite packing, gland, adjusting screw, blowback air cock constitutes, and this powder carries rotatory axle head to be sealed installs in one side of conveyer main part, this conveyer main part includes rotation axis and transport section of thick bamboo, and this powder carries rotatory axle head to be sealed installs in the position that rotation axis is connected with transport section of thick bamboo, be used for the rotation axis to the transport section of thick bamboo both ends of inside malleation to be sealed, this powder carries rotatory axle head to be sealed right side position to be provided with the blowback air cock, and the graphite copper sheathing is installed to the lower extreme of blowback air cock, the left side position of graphite copper sheathing is provided with graphite packing.

Preferably, the upper ends of the graphite copper sleeve and the graphite packing are provided with a filler seat.

Preferably, the graphite packing is obtained by finely weaving reinforced fibers and metal wire reinforced graphite wires serving as raw materials.

Preferably, the metal wire is any one of steel wire, copper wire, nickel wire, carbon fiber, pre-oxidized fiber and glass yarn.

Preferably, the left side of the packing seat is provided with a gland, and the left side of the gland is connected with an adjusting screw.

Preferably, the tightness of the graphite packing is changed by adjusting the adjusting screw under the extrusion of the gland, so that zero leakage is achieved.

Compared with the prior art, the utility model has the following beneficial effects: according to the improved powder conveying rotary shaft end seal, the tightness degree of the graphite packing is changed by adjusting the adjusting screw under the extrusion of the gland, so that zero leakage is achieved. The graphite copper sleeve is used as a first sealing defense line, and the plurality of graphite packing is used as a second sealing; if the interior of the conveying cylinder is positive pressure, compressed air can be used for connecting the back blowing nozzle, and regular maintenance and adjustment of a gland screw are added, so that zero leakage high sealing of the rotating shaft end is achieved, and the improved powder conveying rotating shaft end sealing is not only suitable for sealing of the shaft ends of the screw conveyor but also suitable for sealing of other rotating discharge valves.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the detailed description of non-limiting embodiments, made with reference to the following drawings, in which:

FIG. 1 is a schematic view of the seal installation of the improved powder conveying rotary shaft end of the present utility model;

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

in the figure: 1-back blowing nozzle, 2-graphite copper sleeve, 3-packing seat, 4-graphite packing, 5-gland, 6-compression adjusting screw, 7-conveyor main body, 8-rotation shaft and 9-conveying cylinder.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. The drawings are for illustrative purposes only, are schematic representations, not physical drawings, and are not to be construed as limiting the patent, and in order to better illustrate the specific embodiments of the utility model, certain components in the drawings are omitted, enlarged or reduced, and do not represent the size of the actual product, different kinds of cross-sectional lines in the drawings are not marked according to national standards, nor are materials of the components required, and cross-sectional views of the components in the drawings are distinguished, so that it is understood by those skilled in the art that certain well-known structures, components and descriptions thereof may be omitted in the drawings, and all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of the utility model based on the embodiments in the present utility model.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed" and "connected" are to be construed broadly, and may be, for example, fixedly connected, movably connected, detachably connected, integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected through an intermediate medium, or communicating between two members. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Referring to fig. 1-2, an improved powder conveying rotary shaft end seal mainly comprises a filler seat 3, a graphite copper sleeve 2, a graphite packing 4, a gland 5, an adjusting screw 6 and a back blowing nozzle 1, wherein the powder conveying rotary shaft end seal is arranged on one side of a conveyor main body 7, the conveyor main body 7 comprises a rotary shaft 8 and a conveying cylinder 9, the powder conveying rotary shaft end seal is arranged at a position where the rotary shaft 8 is connected with the conveying cylinder 9 and is used for sealing the rotary shafts 8 at two ends of the conveying cylinder 9 with positive internal pressure, the back blowing nozzle 1 is arranged at the right side of the powder conveying rotary shaft end seal, the graphite copper sleeve 2 is arranged at the lower end of the back blowing nozzle 1, and the graphite packing 4 is arranged at the left side of the graphite copper sleeve 2.

Wherein, the upper ends of graphite copper sheathing 2 and graphite packing 4 are equipped with packing seat 3.

The graphite packing 4 is obtained by finely weaving reinforced graphite wires which are reinforced by reinforcing fibers and metal wires.

Wherein, the metal wire is selected from any one of steel wire, copper wire, nickel wire, carbon fiber, pre-oxidized fiber and glass yarn.

The left side of the packing seat 3 is provided with a gland 5, and the left side of the gland 5 is connected with a compression adjusting screw 6.

Wherein, the tightness of the graphite packing 4 is changed by the extrusion of the gland 5 through the adjustment of the adjusting screw 6, thereby achieving zero leakage.

The utility model discloses a novel leakage-proof sealing structure of a powder screw conveyor, which has remarkable sealing effect on rotating shafts at two ends of a conveying cylinder with positive internal pressure, and the sealing of the rotating shaft ends of the powder conveying is mainly composed of a packing seat 3, a graphite copper sleeve 2, a graphite packing 4, a gland 5, an adjusting screw 6 and a back blowing air tap 1.

The sealing structure mainly adopts the combination of the packing seat 3 and the graphite copper sleeve 2, is a novel sealing structure, and changes the tightness degree of the graphite packing 4 by adjusting the adjusting screw 6 under the extrusion of the gland 5, thereby achieving zero leakage. The graphite copper sleeve 2 is used as a first sealing defense line, and the plurality of graphite packing 4 is used as a second sealing; if the interior of the conveying cylinder 9 is positive pressure, compressed air can be used for connecting the back blowing nozzle 1, and regular maintenance and adjustment of a gland screw are added, so that zero leakage high sealing of the rotating shaft end is achieved;

what is not described in detail in the description belongs to the prior art known to those skilled in the art.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An improved generation powder carries rotatory axle head to seal which characterized in that: this rotatory axle head seal is carried to powder mainly comprises packing seat (3), graphite copper sheathing (2), graphite packing (4), gland (5), compress tightly adjusting screw (6), blowback air cock (1), and this rotatory axle head seal installation is carried to powder in one side of conveyer main part (7), this conveyer main part (7) include rotation axis (8) and transport section of thick bamboo (9), and this rotatory axle head seal installation is carried in the position that rotation axis (8) are connected with transport section of thick bamboo (9) for seal rotation axis (8) at the transport section of thick bamboo (9) both ends of inside malleation, the right side position that rotatory axle head is sealed is provided with blowback air cock (1) is carried to this powder, and graphite copper sheathing (2) are installed to the lower extreme of blowback air cock (1), the left side position of graphite copper sheathing (2) is provided with graphite packing (4).

2. An improved powder delivery spin shaft end seal as defined in claim 1, wherein: and a filler seat (3) is arranged at the upper ends of the graphite copper sleeve (2) and the graphite packing (4).

3. An improved powder delivery spin shaft end seal as defined in claim 1, wherein: the graphite packing (4) is obtained by finely weaving reinforced graphite wires with reinforced fibers and metal wires as raw materials.

4. An improved powder delivery spin shaft end seal as defined in claim 3, wherein: the metal wire is any one of steel wire, copper wire, nickel wire, carbon fiber, pre-oxidized fiber and glass yarn.

5. An improved powder delivery spin shaft end seal as defined in claim 2, wherein: the left side of the packing seat (3) is provided with a gland (5), and the left side of the gland (5) is connected with a compression adjusting screw (6).

6. An improved powder delivery spin shaft end seal as defined in claim 5, wherein: the tightness of the graphite packing (4) is changed by adjusting the adjusting screw (6) under the extrusion of the gland (5), so that zero leakage is achieved.