CN213324890U

CN213324890U - Coal-blocking switch

Info

Publication number: CN213324890U
Application number: CN202022318953.6U
Authority: CN
Inventors: 毛国明; 蒋斌; 张键; 张守文; 刘聪; 林益; 李永明; 何潇; 冀平
Original assignee: Yuhuan Power Plant Huaneng Power International Inc
Current assignee: Yuhuan Power Plant Huaneng Power International Inc
Priority date: 2020-10-16
Filing date: 2020-10-16
Publication date: 2021-06-01
Anticipated expiration: 2030-10-16

Abstract

The utility model provides a coal blockage switch belongs to material level detection technical field. The coal blocking switch solves the problems that an existing coal blocking switch is short in service life and not easy to judge in running state. This coal-plugging switch includes the blade, is the shell of tube-shape and sets up the motor in the shell, shell upper end external fixation have a backup pad, motor shaft tip an organic whole has linked firmly the extension axle, extends the axle and wears out the shell top, the backup pad is connected with the mounting panel through a plurality of spliced poles, the extension axle passes mounting panel center and the blade is fixed at the tip of extending the axle, it is equipped with sealed bearing to extend between axle and the mounting panel center, run through on the mounting panel and be provided with a plurality of mounting holes, the epaxial instruction piece that is fixed with of extension that is located between mounting panel and the backup. The coal blocking switch has the advantages of strong working reliability, long service life and the like.

Description

Coal-blocking switch

Technical Field

The utility model belongs to the technical field of the material level detects, a coal blockage switch is related to.

Background

The level indicator is an instrument for detecting the change of the height of a solid material in a container in real time, and is widely applied to industries such as petrifaction, plastics, cement, medicine, feed, video, metallurgy, light power, building materials, environmental protection and the like. The coal blockage switch is one of the commonly used charge level indicators, the working principle of the coal blockage switch is that a permanent magnet motor is utilized to drive a blade to rotate, when a detected material rises to the position of the blade, the rotation of the blade is blocked, the resistance is transmitted to a detection device in a shell, the detection device outputs a switch signal outwards, and a power supply is cut off to stop the rotation of the blade; when the material descends, the resistance of the blade disappears, and the detection device is restored to the original state by the tension of the spring.

The coal blockage switch on the existing market is mostly a single flange structure, receive the corruption of coal charge in the container easily in the course of the work, lead to damaging motor or other electronic components in the buggy infiltration shell, make coal blockage switch's life reduce greatly, in addition because coal blockage switch's blade is arranged in the container, the staff can't follow the rotatory condition of outside observation blade, can only just know the coal charge in the container through detection device whether surpass the setting value, will have the problem of reporting false alarm when detection device damages, make the staff can't accurately judge coal blockage switch's behavior.

Disclosure of Invention

The utility model aims at the above-mentioned problem that prior art exists, provide a coal-blocking switch, solved the problem that life is short, running state is difficult for judging.

The purpose of the utility model can be realized by the following technical proposal:

coal-plugging switch, including the blade, be the shell of tube-shape and set up the motor in the shell, shell upper end external fixation have a backup pad, its characterized in that, motor shaft tip an organic whole link firmly the extension axle, extend the axle and wear out the shell top, the backup pad is connected with the mounting panel through a plurality of spliced poles, extend the axle and pass mounting panel center and blade and fix the tip at the extension axle, extend and be equipped with sealed bearing between axle and the mounting panel center, run through on the mounting panel and be provided with a plurality of mounting holes, the epaxial instruction piece that is fixed with of extension that is located between mounting panel and the backup pad.

During installation, the installation plate on the coal plugging switch is fixed on the coal box in a mode that the installation plate penetrates through the installation hole through the fastener, the blade is located inside the coal box to work, and the supporting plate, the shell and the like are located outside the coal box. Because the seal bearing is arranged between the extension shaft and the center of the mounting plate, the pulverized coal in the coal box can be prevented from permeating out of the mounting plate and damaging a motor or an electronic component in the shell. The motor is located backup pad department in the use, possesses one section distance again through the setting of each connection post between mounting panel and the backup pad, forms the double-deck protection to the motor, better protection electronic components in the motor, strengthened reliability and life.

The part of extension axle is located between mounting panel and the backup pad, the epaxial instruction piece that is fixed with of extension that is located between mounting panel and the backup pad, when the blade rotates, the axle that extends links and instructs the piece to rotate, whether the staff can externally directly instruct the piece to have the rotation to judge the rotation condition of blade in the coal bunker and the coal cinder in the coal bunker through the visual observation whether surpass initial set value, the visualization of blade work when realizing the application coal blockage switch, the convenience that the staff judged to equipment running state has been improved.

In the above-mentioned coal blockage switch, the indicating block include flat massive main part and protrusion in the lantern ring of main part one side, the centre bore of lantern ring runs through the main part, threaded connection has locking screw on the lantern ring, the tip top of locking screw is on extending the axle.

The indication block is sleeved on the extension shaft through a central hole of the lantern ring, and the end part of the locking screw is propped against the extension shaft to fix the indication block. This kind of connected mode of instruction piece and extension axle for the staff can adjust the position of instructing the piece according to the demand at any time, thereby ensures that the staff can easily observe the rotation condition of instructing the piece with the naked eye all the time, and then makes things convenient for the staff to carry out accurate judgement to the running state of equipment.

In the coal-blocking switch, the outer side of the main body is provided with symmetrically arranged schematic parts.

The indication part is symmetrically arranged on the outer side of the main body and is parallel to the mounting plate, the rotation condition of the indication block can be observed by workers more obviously through the arrangement of the indication part, and observability is enhanced.

In the coal-plugging switch, the indicating part is in a sector shape or a triangular shape.

In the coal-plugging switch, the outer surface of the indicating part is red.

The outer surface of the indicating part is red, and the indicating part is independently set to be red and is distinguished from the surface colors of other parts of the device, so that a worker can better observe the rotation condition of the indicating part and make accurate judgment, and the reliability is enhanced.

Compared with the prior art, this coal-blocking switch makes the staff can the direct observation coal bunker inner blade's the rotatory condition through the setting up of indication portion, can make accurate judgement through observing indication portion, this device still is provided with mounting panel and backup pad, ann changes the motor and coal bunker isolation in board and the backup pad with the shell, be provided with sealed bearing on the mounting panel simultaneously, better prevent the leakage of buggy in the coal bunker and lead to the damage of the inside motor of shell and other electron components, reinforcing reliability can and life.

Drawings

FIG. 1 is a front view of the present coal shutoff switch;

FIG. 2 is a state diagram of the present coal shutoff switch;

FIG. 3 is a state diagram of an indicator block.

In the figure, 1, a housing; 2. a support plate; 3. an extension shaft; 4. connecting columns; 5. mounting a plate; 5a, mounting holes; 6. sealing the bearing; 7. an indication block; 7a, a main body; 7a1, schematic section; 7b, a collar; 8. a blade; 9. and locking the screw.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1 to 3, the coal blocking switch comprises a blade 8, a cylindrical shell 1 and a motor arranged in the shell 1, wherein a supporting plate 2 is fixed outside the upper end of the shell 1, an extension shaft 3 is fixedly connected to the end part of a motor rotating shaft integrally, the extension shaft 3 penetrates out of the top of the shell 1, the supporting plate 2 is connected with a fixed mounting plate 5 through a plurality of connecting columns 4, the extension shaft 3 penetrates through the center of the mounting plate 5, a sealing bearing 6 is arranged between the extension shaft 3 and the center of the mounting plate 5, and the blade 8 is fixed at the end part of the extension shaft 3. The mounting plate 5 is provided with a plurality of mounting holes 5a in a penetrating manner, and when the coal plugging switch is used, the mounting plate 5 on the coal plugging switch is fixed on the coal box in a manner that a plurality of fasteners penetrate through the mounting holes 5 a. The supporting plate 2 and the motor in the shell 1 are positioned above the coal box. Inside blade 8 was located the coal cinder box, seal bearing 6 set up and can prevent that the buggy in the coal cinder box from permeating mounting panel 5, and the motor was located backup pad 2 in the use, has pulled open one section distance through each spliced pole 4 again between mounting panel 5 and the backup pad 2, forms the double-deck protection to the motor, better protection electronic components in the motor, strengthened reliability and life. Be located extension axle 3 between mounting panel 5 and the backup pad 2 on be fixed with instruction piece 7, when blade 8 rotated, extension axle 3 was taken and is instructed piece 7 to rotate, let the staff whether have the rotation that can judge blade 8 in the coal bunker through instructing piece 7 externally and whether the coal cinder in the rotation condition of coal bunker and the coal bunker surpass initial set value, the visualization of blade 8 work when realizing the application coal blockage switch has improved reliable performance.

Further, the indicating block 7 comprises a flat block-shaped main body 7a and a sleeve ring 7b protruding from one side of the main body 7a, a central hole is formed in the sleeve ring 7b, a locking screw 9 is connected to the sleeve ring 7b in a threaded mode, and the end portion of the locking screw 9 abuts against the extension shaft 3. The central hole opened on the lantern ring 7b penetrates through the lantern ring 7b and the main body 7a, the indicating block 7 is sleeved on the extension shaft 3 through the central hole, and the end part of the locking screw 9 is propped against the extension shaft 3 to fix the indicating block 7. The locking screw 9 not only has a limiting function, but also can adjust the position of the indicating block 7 at any time, and the outer side of the main body 7a is provided with symmetrically arranged indicating parts 7a1, specifically, the indicating part 7a1 is fan-shaped or triangular, and the outer surface of the indicating part 7a1 is red. When the motor starts and drives blade 8 through extending axle 3 and rotate, because instruct piece 7 to fix and extend on axle 3 and can rotate in step, instruct piece 7 to be located the outside of coal bunker and can directly be observed by the staff, consequently the staff only need carry out accurate judgement to the running state of equipment through the state of visual observation instruction piece 7. Further, the red outer surface of the indicating portion 7a1 provides a stronger visual effect to the worker, so that the worker can easily observe the state of the indicating block 7 with the naked eye.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. Stifled coal switch, including blade (8), be shell (1) of tube-shape and set up the motor in shell (1), shell (1) upper end external fixation have backup pad (2), its characterized in that, motor shaft tip an organic whole have linked firmly extension axle (3), shell (1) top is worn out in extension axle (3), backup pad (2) are connected with mounting panel (5) through a plurality of spliced poles (4), extension axle (3) pass mounting panel (5) center and blade (8) and fix the tip in extension axle (3), extend and be equipped with sealed bearing (6) between axle (3) and mounting panel (5) center, run through on mounting panel (5) and be provided with a plurality of mounting holes (5a), be located and be fixed with on extension axle (3) between mounting panel (5) and backup pad (2) and indicate piece (7).

2. The coal blockage switch according to claim 1, wherein the indicating block (7) comprises a main body (7a) in a flat block shape and a collar (7b) protruding from one side of the main body (7a), a central hole of the collar (7b) penetrates through the main body (7a), a locking screw (9) is connected to the collar (7b) in a threaded manner, and the end of the locking screw (9) abuts against the extension shaft (3).

3. The coal-jam switch according to claim 2, characterized in that the outside of the main body (7a) has symmetrically arranged schematic parts (7a 1).

4. The coal-jam switch according to claim 3, characterized in that the indication portion (7a1) is in the shape of a sector or a triangle.

5. The coal shutoff switch of claim 4 characterized in that said indicating portion (7a1) has a red outer surface.