Thermal insulation structure of rotary cement kiln

Abstract

The utility model relates to the field of rotary cement kilns, in particular to a heat insulation structure of a rotary cement kiln. Which comprises a base and a kiln body arranged on the base, a driving motor used for driving the kiln body to rotate is arranged on the base, and is characterized in that a heat insulation cover is arranged on the base, the driving motor is covered with the heat insulation cover, an output shaft of the driving motor movably penetrates through the heat insulation cover, and the output shaft of the driving motor is connected with the heat insulation cover. The heat insulation cover is communicated with a ventilation pipe, the ventilation pipe is communicated with an air blower, and an exhaust outlet is formed in the heat insulation cover. The heat-insulating door has a better heat-insulating effect.

Description

Technical Field

[0001] The present application relates to the field of cement rotary kilns, and in particular, to a cement rotary kiln insulation structure. Background Art

[0002] Cement rotary kiln is a kind of building material equipment, which belongs to a kind of lime kiln. It is the main equipment of cement clinker dry and wet production lines, mainly used for calcining cement clinker. According to different heating methods, cement rotary kiln can be divided into two categories: internal heating and external heating. The structure of cement rotary kiln includes cylinder, support device, transmission device, pulley and feeding device. The cylinder is the core part of the whole equipment, which is welded by multiple sections of steel plates and has the properties of high temperature resistance, corrosion resistance and tensile strength. The support device is used to support the cylinder and transfer gravity load, and the transmission device is used to drive the cylinder to rotate. The working principle of cement rotary kiln includes feeding, rotary motion, drying belt, preheating belt, calcining belt, cooling belt and discharge. The raw materials enter from the feed port of the rotary kiln, and after forming a material layer, they gradually slide down and move forward under the action of gravity and centrifugal force. After the materials are dried, preheated, calcined and cooled in the kiln, they are finally discharged from the discharge port and sent to the clinker bin for storage.

[0003] At present, cement rotary kilns generally use motors to drive the rotary kiln cylinder to rotate, but the motors are generally installed under the rotary kiln. The internal temperature of the rotary kiln is as high as over one thousand degrees Celsius when it is working. Even if fire bricks are installed in the rotary kiln, heat will still be radiated from the cylinder wall of the rotary kiln, so that the temperature around the rotary kiln is relatively high. At present, in order to isolate the heat, a heat insulation board is generally installed on the side of the motor facing the rotary kiln cylinder, but this heat insulation method has poor insulation effect, resulting in a high working environment temperature of the motor. Summary of the invention

[0004] The purpose of the embodiments of the present application is to provide a cement rotary kiln insulation structure, which can solve the technical problem of poor motor insulation effect.

[0005] The embodiment of the present application provides a cement rotary kiln insulation structure adopting the following technical solution:

[0006] A cement rotary kiln insulation structure comprises a base, a kiln body arranged on the base, a drive motor for driving the kiln body to rotate is arranged on the base, and is characterized in that: a heat insulation cover is arranged on the base, the heat insulation cover is engaged with the drive motor, the output shaft of the drive motor movably passes through the heat insulation cover, the heat insulation cover is connected with a ventilation pipe, the ventilation pipe is connected with a blower, and the heat insulation cover is provided with an exhaust port.

[0007] Furthermore, a plurality of fixing plates are provided at the bottom of the outer side surface of the heat insulation cover, the fixing plates are fitted with the base, and bolts are fixedly connected between the fixing plates and the base.

[0008] Furthermore, ribs are fixedly connected between the two fixed opposite sides and the outer side surface of the heat insulation cover.

[0009] Furthermore, an inner shell is arranged inside the heat insulation cover, and a cavity is arranged between the heat insulation cover and the inner shell.

[0010] Furthermore, a polyurethane layer is provided between the heat insulation cover and the inner shell.

[0011] Furthermore, the heat insulation cover is provided with an inspection door, one side of the inspection door is rotatably connected to the heat insulation cover, the inspection door is provided with a buckle, and the outer surface of the heat insulation cover is provided with a hook, and the hook is buckled with the buckle.

[0012] Furthermore, a protective net is provided on the air outlet.

[0013] Furthermore, a plurality of ribs are arranged on the outer surface of the heat insulation cover, and the plurality of ribs are arranged in a crisscross pattern.

[0014] Beneficial effects of the utility model:

[0015] When the heat insulation structure provided by the utility model is working, the blower flows air into the heat insulation cover, the air flow takes away the heat received by the heat insulation cover and the heat generated when the driving motor is working, and is discharged through the exhaust port, thereby effectively isolating the influence of the heat generated by the kiln body on the driving motor, and having a good heat insulation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the utility model;

[0018] Figure 2 A top view of an embodiment of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of an embodiment of the utility model after the inspection door is opened;

[0020] Figure 4This is a schematic diagram of the structure of an embodiment of the utility model after the kiln body is hidden.

[0021] The reference numerals are as follows: 1, base; 2, kiln body; 3, drive motor; 4, blower; 41, ventilation pipe; 5, heat shield; 51, exhaust port; 511, protection net; 52, fixing plate; 521, bolt; 53, rib plate; 54, inner shell; 55, inspection door; 551, buckle; 56, rib; DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0024] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0025] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the application is usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0026] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0027] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0028] The present application embodiment discloses a cement rotary kiln insulation structure, referring to Figure 1-4 , including a base 1 and a kiln body 2 arranged on the base 1, the base 1 is made of concrete, the base 1 is arranged on the ground, a supporting wheel is installed on the base 1 in the horizontal direction, a wheel belt is coaxially fixedly installed on the circumference of the kiln body 2, and the wheel belt is supported on the supporting wheel. A driving motor 3 is fixedly installed on the base 1 in the horizontal direction, a large gear ring is coaxially fixedly installed on the circumference of the kiln body 2, the output shaft of the driving motor 3 is connected to a reduction box, the output shaft of the driving motor 3 is fixedly connected to the input end of the reduction box, a gear is fixedly installed on the output end of the reduction box, and the gear is meshed with the large gear ring. When the driving motor 3 is working, the driving motor 3 drives the gear to rotate through the reduction box, thereby driving the large gear ring to drive the kiln body 2 to rotate, and the reduction box can increase the output torque of the driving motor 3.

[0029] In addition, a heat shield 5 is fixedly installed on the base 1. The heat shield 5 can be made of galvanized steel plate, color steel plate or stainless steel, and has good anti-rust effect. The heat shield 5 is hollow, and the heat shield 5 covers the drive motor 3. The drive motor 3 is located in the heat shield 5. The output shaft of the drive motor 3 moves through the heat shield 5 and is connected to the reduction box. The side wall of the heat shield 5 away from the reduction box is connected with a ventilation pipe 41, and the ventilation pipe 41 is connected with a blower 4. The blower 4 can be placed in a position away from the kiln body 2 or other heat sources. At the same time, an exhaust port 51 is opened on the upper surface of the heat shield 5. When the blower 4 works, the air flow flows into the heat shield 5. The air flow takes away the heat received by the heat shield 5 and the heat generated when the drive motor 3 works, and is discharged through the exhaust port 51, thereby dissipating the heat of the drive motor 3, and the heat dissipation effect is good. In addition, a protective net 511 is fixedly installed on the exhaust port 51, and the protective net 511 can prevent debris from falling into the heat shield 5. In addition, an inner shell 54 is provided inside the heat insulation cover 5, and a certain distance is provided between the heat insulation cover 5 and the inner shell 54 to form a cavity, and the cavity between the heat insulation cover 5 and the inner shell 54 is filled with a polyurethane layer. The cavity and the polyurethane layer can reduce the heat conduction effect of the heat insulation cover 5, thereby reducing the heat conducted from the outside to the heat insulation cover 5.

[0030] At the same time, a plurality of fixing plates 52 are welded to the bottom of the outer side of the heat shield 5. The fixing plates 52 fit the upper surface of the base 1. Bolts 521 are fixedly connected between the fixing plates 52 and the base 1. Expansion bolts 521 can be used for the bolts 521. First, holes are punched on the base 1, and the bolts 521 are inserted into the base 1. Then, the fixing plates 52 are inserted onto the bolts 521 and nuts are screwed on. Then, the heat shield 5 can be fixed to the base 1. In addition, ribs 53 are connected between the fixed opposite sides and the outer side of the heat shield 5. The ribs 53 are arranged in a triangular shape. One side of the ribs 53 is welded to the outer side of the heat shield 5, and the other side of the ribs 53 is welded to the upper surface of the fixing plates 52. The ribs 53 can improve the connection stability between the fixing plates 52 and the heat shield 5.

[0031] In addition, one side surface of the heat insulation cover 5 is open, and an inspection door 55 is provided on the heat insulation cover 5. One side of the inspection door 55 is hinged to the heat insulation cover 5 by a hinge, and the inspection door 55 covers the open side of the heat insulation cover 5. A buckle 551 is fixedly installed on the outer side surface of the inspection door 55, and a hook is fixedly installed on the outer surface of the heat insulation cover 5, and the hook is buckled with the buckle 551. When it is necessary to inspect the drive motor 3 in the heat insulation cover 5, the operator opens the buckle 551 and the inspection door 55, and the drive motor 3 can be easily inspected. In addition, a plurality of ribs 56 are welded on the outer surface of the heat insulation cover 5, and the plurality of ribs 56 are crisscrossed. The ribs 56 can improve the structural strength of the heat insulation cover 5, so that the heat insulation cover 5 is not easily deformed.

[0032] The implementation principle of the thermal insulation structure of a cement rotary kiln in the embodiment of the present application is as follows: the blower 4 operates to flow air into the thermal insulation cover 5, and the air flow takes away the heat received by the thermal insulation cover 5 and the heat generated by the driving motor 3 when it is working, and is discharged through the exhaust port 51, thereby effectively isolating the influence of the heat generated by the kiln body 2 on the driving motor 3, and having a good thermal insulation effect.

[0033] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A cement rotary kiln insulation structure, comprising a base, a kiln body arranged on the base, wherein a driving motor for driving the kiln body to rotate is arranged on the base, and characterized in that: The base is provided with a heat insulation cover, the heat insulation cover is covered with the drive motor, the output shaft of the drive motor movably passes through the heat insulation cover, the heat insulation cover is connected with a ventilation pipe, the ventilation pipe is connected with a blower, and the heat insulation cover is provided with an exhaust port.

2. A cement rotary kiln insulation structure according to claim 1, characterized in that: A plurality of fixing plates are arranged at the bottom of the outer side surface of the heat insulation cover, the fixing plates are fitted with the base, and bolts are fixedly connected between the fixing plates and the base.

3. A cement rotary kiln insulation structure according to claim 2, characterized in that: Ribs are fixedly connected between the two fixed opposite sides and the outer side surface of the heat insulation cover.

4. A cement rotary kiln insulation structure according to claim 1, characterized in that: An inner shell is arranged inside the heat insulation cover, and a cavity is arranged between the heat insulation cover and the inner shell.

5. A cement rotary kiln insulation structure according to claim 4, characterized in that: A polyurethane layer is arranged between the heat insulation cover and the inner shell.

6. A cement rotary kiln insulation structure according to claim 1, characterized in that: The heat insulation cover is provided with an inspection door, one side of the inspection door is rotatably connected to the heat insulation cover, the inspection door is provided with a buckle, and the outer surface of the heat insulation cover is provided with a hook, and the hook is buckled with the buckle.

7. The cement rotary kiln insulation structure according to claim 1, characterized in that: A protective net is arranged on the air outlet.

8. The cement rotary kiln insulation structure according to claim 1, characterized in that: The outer surface of the heat insulation cover is provided with a plurality of ribs, and the plurality of ribs are arranged in a crisscross pattern.

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