CN112268453A

CN112268453A - Rotary kiln wheel belt automatic resetting device

Info

Publication number: CN112268453A
Application number: CN202011223939.6A
Authority: CN
Inventors: 高志鹏; 张勇; 程新联; 贺旭帅; 韦征
Original assignee: Xinan Zhonglian Wanji Cement Co ltd
Current assignee: Xinan Zhonglian Wanji Cement Co ltd
Priority date: 2020-11-05
Filing date: 2020-11-05
Publication date: 2021-01-26
Anticipated expiration: 2040-11-05
Also published as: CN112268453B

Abstract

The invention discloses an automatic rotary kiln wheel belt resetting device which comprises a base and a kiln body arranged above the inner side of the base, wherein an arc-shaped surface is arranged at the upper end of the base, a transmission device is arranged between the kiln body and the base, two wheel belts are arranged on the outer surface of the kiln body and on two sides of the transmission device in a clearance fit mode, retaining rings are fixedly welded on the outer surface of the kiln body and on two sides of the wheel belts, a fixing ring is coaxially and fixedly connected to the outer circle of each wheel belt, inner cavities are uniformly formed in the fixing ring in the circumferential direction, and two first permanent magnet blocks are symmetrically, hermetically and slidably connected in each inner cavity. Has the advantages that: the second permanent magnets in each inner cavity are abutted against the inner wall of the inner cavity under the magnetic repulsion force of the first permanent magnets, and the rollers at the tail ends of the supporting rods are always in rolling contact with the retaining rings to maintain the distance between the belt pulleys and the retaining rings, so that the belt pulleys can automatically reset, and the problems of a series of problems caused by abrasion of the belt pulleys and the retaining rings due to relative sliding of the belt pulleys and the kiln body are solved.

Description

Rotary kiln wheel belt automatic resetting device

Technical Field

The invention relates to the technical field of rotary kilns, in particular to an automatic resetting device for rotary kiln wheel belts.

Background

The rotary kiln is the most central equipment in the cement production process and plays a vital role in cement calcination. The rotary kiln consists of a kiln body (with refractory bricks as a lining), three supporting devices (one device with a catch wheel), a transmission device and a kiln head and kiln tail sealing device. The discharge end of the kiln head of the rotary kiln is lower than the feed end of the kiln tail, and the inclination of the rotary kiln and the horizontal plane is 3.5%. The rotary kiln is continuously influenced by bending stress, heat radiation, dead weight and the like during operation, and simultaneously needs to do rotary motion, up-and-down motion, the motion and stress conditions are very complex, and the stress conditions under cold-state and hot-state motion also change greatly.

The rotary kiln wheel belt is used as an important part for supporting the rotary kiln body, and the optimal motion state of the rotary kiln wheel belt is guaranteed to be important. The diameter of a two-gear belt of a rotary kiln wheel with the diameter of 4.8 multiplied by 72m is 5.96 meters, the inner diameter is 4.97 meters, the width is 1 meter, the weight is about 66.68 tons, and the gap between the two-gear belt and a backing plate under the belt is 10-13 millimeters. Because there is the interval between kiln body external diameter and the wheel belt internal diameter, there is relative slip between kiln body and the wheel belt of rotary kiln in the course of rotating, because there is 3.5% obliqueness between kiln body and horizontal plane, except that the kiln keeps off the wheel and brings an upward thrust to the wheel, keep off the centre line of the tug and have certain dip angles with the centre line of kiln too, the riding wheel brings an upward thrust along the centre line of kiln to the wheel, transmit to the kiln body through dog and backing plate. Because the inner diameter of the belt pulley is larger than the outer diameter of the kiln body, the belt pulley and the kiln body are asynchronous, the speed of the belt pulley is low, relative sliding exists between the belt pulley and the kiln body blocking blocks, the belt pulley and the blocking blocks on the side of the belt pulley are abraded due to long-term operation, the gap between the belt pulley and the side blocking blocks is enlarged, even the belt pulley deviates from the central line position of the original belt pulley seriously, the instability of the belt pulley operation is increased, and the associated supporting wheel tile is easy to generate heat to influence the safe operation of the kiln.

In order to solve the problems, an automatic resetting device for a rotary kiln wheel belt is provided.

Disclosure of Invention

The invention aims to solve the problems in the background art and provides an automatic resetting device for a rotary kiln wheel belt.

In order to achieve the purpose, the invention adopts the following technical scheme: an automatic resetting device for rotary kiln wheel belts comprises a base and a kiln body arranged above the inner side of the base, wherein an arc-shaped surface is arranged at the upper end of the base, a transmission device is arranged between the kiln body and the base, two wheel belts are arranged on the outer surface of the kiln body and are in clearance fit with the two sides of the transmission device, retaining rings are fixedly welded on the outer surface of the kiln body and the two sides of the wheel belts, a fixing ring is coaxially and fixedly connected with the outer circle of the wheel belts, inner cavities are uniformly formed in the fixing ring in the circumferential direction, two first permanent magnetic blocks are symmetrically and slidably connected in the inner cavities, shielding plates are fixedly connected on the adjacent sides of the two first permanent magnetic blocks, pressure blocks are symmetrically and fixedly connected on the adjacent sides of the two shielding plates, pressure inclined surfaces are symmetrically arranged on the adjacent sides of the two pressure blocks, extrusion blocks are in sliding contact between the two pressure blocks, and extrusion inclined surfaces with the same slope, the extrusion block is internally inserted with a screw and is in threaded connection with the screw, the inner cavity is symmetrically, hermetically and slidably connected with two second permanent magnets at one side of the two first permanent magnets, a coil is arranged between the first permanent magnets and the second permanent magnets which are positioned at the same side, the first permanent magnets and the second permanent magnets are in repulsion arrangement, supporting rods are fixedly connected at one sides of the two second permanent magnets which are opposite to each other, one ends of the supporting rods, far away from the second permanent magnets, penetrate through the inner cavity and are rotatably provided with rollers, the rollers are in rolling connection with a baffle ring, each coil is electrically connected with a second motor, a first cooling cavity and a second cooling cavity are symmetrically arranged in the fixing ring, a pump flow pipe communicated with the first cooling cavity and the second cooling cavity is arranged in the fixing ring from top to bottom, cooling liquid is filled in the first cooling cavity, the second cooling cavity and the pump flow pipe, and a one-way valve is arranged on the pump flow, the second motor is embedded at one side of the second cooling cavity, and the output end of the second motor extends into the second cooling cavity and is fixedly connected with a pump impeller.

In foretell rotary kiln wheel belt automatic re-setting device, transmission includes the motor cabinet of fixed connection bottom surface in the base, the upper end fixed mounting of motor cabinet has first motor, the coaxial fixedly connected with friction pulley of output of first motor, the coaxial fixed friction ring that cup joints with friction pulley frictional contact of kiln external surface.

In the automatic resetting device for the rotary kiln wheel belt, one end of the screw rod, which is far away from the extrusion block, is matched with the outer circle of the fixing ring, and one end of the screw rod, which is far away from the extrusion block, is provided with the lock rod groove.

In the rotary kiln wheel belt automatic resetting device, the inner side of the coil is fixedly connected with the spring in a gluing mode, and two ends of the spring are fixedly connected with the first permanent magnet and the second permanent magnet respectively.

In the rotary kiln wheel belt automatic resetting device, the two check valves are arranged in opposite directions.

In the rotary kiln wheel belt automatic resetting device, the heat dissipation rings are embedded on the outer surfaces of the fixing rings and at the corresponding positions of the first cooling cavity and the second cooling cavity and are made of copper alloy materials.

Compared with the prior art, the rotary kiln wheel belt automatic resetting device has the advantages that:

1. the second permanent magnets in each inner cavity are abutted against the inner wall of the inner cavity under the magnetic repulsion force of the first permanent magnets, and the roller at the tail end of the support rod is always in rolling contact with the retaining ring to maintain the distance between the belt pulley and the retaining ring, and the belt pulley can automatically reset, so that the problems of a series of problems caused by abrasion of the belt pulley and the retaining ring due to relative sliding of the belt pulley and the kiln body are solved;

2. once the wheel belt deviates relative to the kiln body, the second permanent magnet slides towards the first permanent magnet, the coil cuts a magnetic induction line in a magnetic field to generate current, the second motor drives the pump impeller to rotate quickly, so that cooling liquid in the first cooling cavity, the second cooling cavity and the pump flow pipe flows in a circulating mode, heat absorbed by the wheel belt is dissipated to the outside through the fixing ring and the cooling liquid and the heat dissipation ring in the inner cavity, and loss caused by overheating is avoided;

3. the accessible shortens between first permanent-magnet piece and the second permanent-magnet piece interval and increases the intensity that the wheel belt takes place wearing and tearing with keeping off the ring, even insert the locking lever groove with the instrument, through rotatory screw rod, drive the extrusion piece and slide on the kiln body radial line, the extrusion inclined plane makes two first permanent-magnet pieces slide back and forth through the extrusion pressurized inclined plane to shorten interval between first permanent-magnet piece and the second permanent-magnet piece.

Drawings

FIG. 1 is a schematic structural diagram of the front side of an automatic rotary kiln tyre resetting device provided by the invention;

FIG. 2 is a perspective view of the structure of FIG. 1, partially enlarged;

FIG. 3 is a partially enlarged schematic view of FIG. 2;

FIG. 4 is a partially enlarged schematic view of FIG. 3;

fig. 5 is a perspective view of the side of the automatic return device for the rotary kiln tyre according to the present invention.

In the figure: the kiln comprises a base 1, a kiln body 2, a friction ring 3, a motor seat 4, a first motor 5, a friction wheel 6, a mounting seat 7, a riding wheel 8, a retaining ring 9, a wheel belt 10, a fixing ring 11, an inner cavity 12, a first permanent magnet 13, a coil 14, a second permanent magnet 15, a support rod 16, a roller 17, an extrusion block 18, an extrusion inclined plane 181, a screw rod 19, a lock rod groove 191, a first cooling cavity 20, a second cooling cavity 21, a second motor 22, a pump impeller 23, a pump flow pipe 24, a one-way valve 25, a heat dissipation ring 26, a shielding plate 27, a pressure block 28 and a pressure inclined plane 281.

Detailed Description

The following examples are for illustrative purposes only and are not intended to limit the scope of the present invention.

Examples

Referring to fig. 1-5, an automatic resetting device for rotary kiln wheel belts comprises a base 1 and a kiln body 2 arranged above the inner side of the base 1, an arc-shaped surface is arranged at the upper end of the base 1, a transmission device is arranged between the kiln body 2 and the base 1, two wheel belts 10 are arranged on the outer surface of the kiln body 2 and in clearance fit with the two sides of the transmission device, baffle rings 9 are fixedly welded on the outer surface of the kiln body 2 and on the two sides of the wheel belts 10, fixing rings 11 are coaxially and fixedly connected with the outer circle of the wheel belts 10, inner cavities 12 are uniformly arranged on the inner circumference of the fixing rings 11, two first permanent magnets 13 are symmetrically and slidably connected in the inner cavities 12 in a sealing manner, shielding plates 27 are fixedly connected on the adjacent sides of the two first permanent magnets 13, the shielding plates 27 shield the magnetic field influence between the two first permanent magnets 13, symmetrically and fixedly connected with pressed blocks 28 on the adjacent sides of the, an extrusion block 18 is in sliding contact with two pressed blocks 28, two sides of the extrusion block 18 are symmetrically provided with extrusion inclined planes 181 with the same slope as that of the extrusion inclined plane 281, a screw rod 19 is inserted into the extrusion block 18 and is in threaded connection with the extrusion block 18, no movable space for circumferential rotation of the extrusion block 18 is arranged in the inner cavity 12, therefore, the extrusion block 18 can only slide in the radial direction of the fixing ring 11 in the inner cavity 12, the inner cavity 12 is symmetrically and hermetically connected with two second permanent magnets 15 at one side of the two first permanent magnets 13 opposite to each other, a coil 14 is arranged between the first permanent magnets 13 and the second permanent magnets 15 at the same side, the first permanent magnets 13 and the second permanent magnets 15 are arranged in a repulsion manner, supporting rods 16 are fixedly connected at one side of the two second permanent magnets 15 opposite to each other, one end of the supporting rod 16 far away from the second permanent magnets 15 penetrates through the inner cavity 12 and is rotatably provided with a roller 17, the, each coil 14 all is electrically connected with second motor 22, first cooling chamber 20 and second cooling chamber 21 have been seted up to the symmetry in the solid fixed ring 11, gu install the pump flow tube 24 with first cooling chamber 20, second cooling chamber 21 intercommunication from top to bottom in the fixed ring 11, first cooling chamber 20, second cooling chamber 21, pump flow tube 23 intussuseption is filled with the coolant liquid, install check valve 25 on the pump flow tube 24, second motor 22 inlays the dress in one side of second cooling chamber 21, second motor 22's output extends to in the second cooling chamber 21 and fixedly connected with pump impeller 23, second motor 22 and pump impeller 23 simulate into the water pump and use.

The transmission device comprises a motor base 4 fixedly connected to the bottom surface in the base 1, a first motor 5 is fixedly mounted at the upper end of the motor base 4, a friction wheel 6 is fixedly connected to the output end of the first motor 5 in a coaxial mode, a friction ring 3 in friction contact with the friction wheel 6 is sleeved on the outer surface of the kiln body 2 in a coaxial fixed mode, and the first motor 5 drives the kiln body 2 to rotate circumferentially through the friction effect between the friction wheel 6 and the friction ring 3.

One end of the screw rod 19, which is far away from the extrusion block 18, is matched with the outer circle of the fixing ring 11, and one end of the screw rod 19, which is far away from the extrusion block 18, is provided with a locking rod groove 191, and the locking rod groove 191 is beneficial for workers to rotate the screw rod 19.

The inner side of the coil 14 is fixedly connected with a spring in a gluing mode, two ends of the spring are fixedly connected with the first permanent magnet 13 and the second permanent magnet 15 respectively, and the arrangement of the spring is to maintain the shape of the coil 14 and to improve the anti-sliding strength of the second permanent magnet 15 towards the first permanent magnet 13.

The two check valves 25 are arranged in opposite directions to define the flow direction of the cooling liquid, so that the cooling liquid flows circularly.

The outer surface of the fixing ring 11 and the corresponding positions of the first cooling cavity 20 and the second cooling cavity 21 are embedded with heat dissipation rings 26, the heat dissipation rings 26 are made of copper alloy materials, the specific thermal capacity of the cooling liquid is large, the heat conductivity coefficient of the heat dissipation rings 26 is high, and the heat absorption and heat dissipation efficiency is high.

The working principle of the invention is as follows:

the kiln body 2 is arranged with a lower left end and a higher right end, namely the left end is a kiln head discharging end and the right end is a kiln tail feeding end. The wheel belt 10 has a small gap with the baffle ring 9 and the kiln body 2 as explained in the background art, the outer diameter of the fixing ring 11 is smaller than that of the baffle ring 9, the fixing ring 11 is limited between the two baffle rings 9, the fixing ring 11 is limited and supported by the plurality of supporting wheels 8, the stability of the kiln body 2 in the rotation process is greatly improved, and the first motor 5 in the transmission device drives the kiln body 2 to rotate slowly by using the friction force of the friction wheel 6 and the friction ring 3.

The second permanent magnets 15 in each inner cavity 12 are abutted against the inner wall of the inner cavity 12 under the magnetic repulsion force of the first permanent magnets 13, the rollers 17 at the tail ends of the support rods 16 are always in rolling contact with the baffle ring 9 to maintain the distance between the belt 10 and the baffle ring 9, the belt 10 can automatically reset, the problems of a series of problems caused by abrasion of the belt 10 and the baffle ring 9 due to relative sliding of the belt 10 and the kiln body 2 are solved, once the belt 10 deviates relative to the kiln body 2, the second permanent magnets 15 slide towards the direction of the first permanent magnets 13, the coil 14 cuts magnetic induction lines in a magnetic field to generate current, the second motor 22 drives the pump impeller 23 to rapidly rotate, so that the cooling liquid in the first cooling cavity 20, the second cooling cavity 21 and the pump flow pipe 24 circularly flows, and the heat absorbed by the belt 10 is dissipated to the outside through the fixing ring 11, the cooling liquid in the inner cavities 12 and the heat dissipation ring 26, avoid the loss caused by overheating.

The strength of abrasion between the anti-wheel belt 10 and the retaining ring 9 can be increased by shortening the distance between the first permanent magnet 13 and the second permanent magnet 15, namely, a tool is inserted into the lock rod groove 191, the extruding block 18 is driven to slide on the radial line of the kiln body 2 by rotating the screw rod 19, and the extruding inclined plane 181 enables the two first permanent magnets 13 to slide back to back by extruding the pressed inclined plane 281, so that the distance between the first permanent magnets 13 and the second permanent magnets 15 is shortened.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The rotary kiln wheel belt automatic resetting device comprises a base (1) and a kiln body (2) arranged above the inner side of the base (1), and is characterized in that the upper end of the base (1) is provided with an arc-shaped surface, a transmission device is arranged between the kiln body (2) and the base (1), two wheel belts (10) are arranged on the outer surface of the kiln body (2) in a clearance fit manner on the two sides of the transmission device, retaining rings (9) are fixedly welded on the outer surface of the kiln body (2) and on the two sides of the wheel belts (10), a fixing ring (11) is coaxially and fixedly connected with the outer circle of the wheel belts (10), an inner cavity (12) is uniformly arranged in the fixing ring (11) in the inner circumference direction, two first permanent magnets (13) are symmetrically and slidably connected in the inner cavity (12), shielding plates (27) are fixedly connected on one sides of the first permanent magnets (13) in a similar manner, two compression blocks (28) are symmetrically and fixedly connected on one sides, two close one side symmetry of pressed piece (28) is equipped with pressurized inclined plane (281), sliding contact has extrusion block (18) between two pressed piece (28), the bilateral symmetry of extrusion block (18) is equipped with extrusion inclined plane (181) that equals with pressurized inclined plane (281) slope, extrusion block (18) interpolation is equipped with screw rod (19) and threaded connection with it, inner chamber (12) are in two first permanent magnetism piece (13) one side symmetry sealed sliding connection that backs on the back have two second permanent magnetism piece (15), lie in be equipped with coil (14) between first permanent magnetism piece (13) and second permanent magnetism piece (15) of same side, and first permanent magnetism piece (13) and second permanent magnetism piece (15) repel each other and set up, two second permanent magnetism piece (15) one side all fixedly connected with branch (16) back on the back, the one end that second permanent magnetism piece (15) was kept away from to branch (16) runs through inner chamber (12) and rotates and installs gyro wheel (17), and gyro wheel (17) and fender ring (9) roll connection, each coil (14) equal electricity is connected with second motor (22), first cooling chamber (20) and second cooling chamber (21) have been seted up to solid fixed ring (11) interior symmetry, gu install pump flow tube (24) with first cooling chamber (20), second cooling chamber (21) intercommunication from top to bottom in fixed ring (11), first cooling chamber (20), second cooling chamber (21), pump flow tube (24) intussuseption are filled with the coolant liquid, install check valve (25) on pump flow tube (24), second motor (22) inlay the dress in one side of second cooling chamber (21), the output of second motor (22) extends to in second cooling chamber (21) and fixedly connected with pump impeller (23).

2. The rotary kiln wheel belt automatic resetting device according to claim 1, characterized in that the transmission device comprises a motor base (4) fixedly connected to the inner bottom surface of the base (1), a first motor (5) is fixedly installed at the upper end of the motor base (4), a friction wheel (6) is coaxially and fixedly connected to the output end of the first motor (5), and a friction ring (3) in friction contact with the friction wheel (6) is coaxially and fixedly sleeved on the outer surface of the kiln body (2).

3. The automatic resetting device for the rotary kiln tyre as claimed in claim 1, wherein one end of the screw rod (19) far away from the extrusion block (18) is matched with the outer circle of the fixing ring (11), and one end of the screw rod (19) far away from the extrusion block (18) is provided with a locking rod groove (191).

4. The automatic return device for the rotary kiln tyre as claimed in claim 1, wherein the inner side of the coil (14) is fixedly connected with a spring by gluing, and two ends of the spring are respectively fixedly connected with the first permanent magnet (13) and the second permanent magnet (15).

5. The automatic resetting device for the rotary kiln tyre as claimed in claim 1, characterized in that the two check valves (25) are arranged in opposite directions.

6. The automatic rotary kiln wheel belt resetting device as claimed in claim 1, wherein a heat dissipation ring (26) is embedded in the outer surface of the fixing ring (11) at the corresponding position of the first cooling cavity (20) and the second cooling cavity (21), and the heat dissipation ring (26) is made of copper alloy material.