WO2021027699A1

WO2021027699A1 - External thermal revolving apparatus

Info

Publication number: WO2021027699A1
Application number: PCT/CN2020/107635
Authority: WO
Inventors: 江艳存; 王贵山
Original assignee: 招远市汇潮新能源科技有限公司
Priority date: 2019-08-14
Filing date: 2020-08-07
Publication date: 2021-02-18
Also published as: CN112393584A

Abstract

The present application discloses an external thermal revolving apparatus, comprising a roller and a combustion cylinder, the combustion cylinder being sealingly sleeved on the periphery of the roller, and the roller rotating relative to the combustion cylinder which is fixedly arranged, characterized in that the apparatus further comprises a lifting plate arranged on an outer wall of the roller and located within the combustion cylinder. When the roller is rotating, the lifting plate rotates with the roller, and the lifting plate lifts up energy materials accumulated at the bottom of the combustion cylinder, so that the energy materials are spread and burned in the combustion cylinder. This boosts the combustion speed and increases the combustion range, so that the energy materials are fully burned, reducing energy consumption, meeting heating requirements for heat generated, and improving the combustion efficiency of the energy materials.

Description

An external thermal rotation equipment

This application claims the priority of a Chinese patent filed with the Chinese Patent Office on August 14, 2019, the application number is 201910748690.1, and the invention title is "an external thermal rotary device", the entire content of which is incorporated into this application by reference.

Technical field

The present invention relates to the technical field of rotating equipment, in particular to an external thermal rotating equipment.

Background technique

The existing external heat rotation equipment mainly includes a drum and a combustion tube. The combustion tube is sleeved on the outer circumference of the drum. The drum rotates relative to the fixed combustion tube. The material rolls and moves in the drum. The heat generated by the combustion of energy materials in the combustion tube passes through The wall of the drum transmits the material in the drum. However, the energy material in the combustion tube is not fully burned, the heat cannot meet the requirements, and the energy material is wasted.

In summary, how to improve the combustion efficiency of the combustion cylinder has become an urgent problem for those skilled in the art.

Summary of the invention

In view of this, the object of the present invention is to provide an external thermal revolving device to improve the combustion efficiency of the combustion cylinder.

To achieve the above objective, the present invention provides the following technical solutions:

An external heat revolving equipment, comprising a drum and a combustion tube, the combustion tube is sealed on the outer circumference of the drum, and the drum rotates relative to the combustion tube fixedly arranged; and further includes A lifting plate on the outer wall and located in the combustion cylinder.

Preferably, in the above-mentioned external heat revolving equipment, the lifting plates are distributed along the axial and circumferential directions of the drum.

Preferably, in the above-mentioned external heat revolving equipment, the rotating surface formed by the rotation of the ends of the plurality of lifting plates is continuous in the axial direction of the drum.

Preferably, in the above-mentioned external heat revolving equipment, the lifting plate surface of the lifting plate is parallel or inclined to the axial direction of the drum.

Preferably, in the above-mentioned external heat revolving equipment, the lifting plate surface of the lifting plate is inclined toward the feeding end of the drum, so that the transfer direction of the energy substance in the combustion tube is the same as that in the drum. The moving direction of the material is opposite.

Preferably, in the above-mentioned external heat revolving equipment, the end of the lifting plate is a bending part bent along the rotation direction of the drum.

Preferably, in the above-mentioned external heat revolving equipment, the bent portion of the lifting plate is provided with a leakage gap.

Preferably, in the above-mentioned external heat revolving equipment, it further includes a gas communication cavity arranged in the drum and isolated from the inside of the drum, and the gas communication cavity and the combustion tube are arranged in the drum through The communicating hole on the cylinder wall is used for introducing the heating gas of the combustion cylinder into the gas communicating cavity, and the cavity wall of the gas communicating cavity is used for heat transfer with the material in the drum.

Preferably, in the above-mentioned external heat revolving equipment, at least one communication hole is provided between the two adjacent lifting plates in the circumferential direction, which is used to disturb the heating gas in the combustion cylinder to make the heating gas The gas enters the communication cavity and generates irregular convection.

Preferably, in the above-mentioned external heat revolving equipment, the gas communication cavity is a continuous cavity structure or a plurality of separate cavity structures.

Preferably, in the above-mentioned external thermal revolving equipment, one side cavity wall of the gas communication cavity is fixed or shared with the inner wall of the drum, and the gas communication cavity is attached or shared with the drum. The communicating hole is opened on the common cylinder wall.

Preferably, in the above-mentioned external thermal revolving equipment, the gas communication cavity is one or more groups of spiral structure cavities, the spiral structure cavities spirally extend along the axial direction of the drum, and the spiral structure cavity The side wall of the body and the cylinder wall of the drum form a spiral material channel.

Preferably, in the above-mentioned external heat revolving equipment, one or more communicating holes are opened on the cylindrical wall where the spiral structure cavity is attached to or shared with the drum, and the plurality of communicating holes are arranged along the spiral direction. .

Preferably, in the above-mentioned external thermal revolving equipment, the spiral structure cavity is an annular spiral structure cavity, and there is a radial distance between the inner ring of the annular spiral structure cavity and the axis of the drum.

Preferably, in the above-mentioned external heat revolving equipment, the barrel of the combustion cylinder is provided with an observation port, an ignition port, a gas inlet and outlet, and a waste outlet.

Preferably, in the above-mentioned external thermal revolving equipment, the two ends of the combustion cylinder and the outer cylinder wall of the drum are connected by a contact friction type rotary sealing connection.

Compared with the prior art, the beneficial effects of the present invention are:

In the external heat revolving equipment provided by the present invention, the combustion cylinder is sealed and sleeved on the outer periphery of the drum, and the drum rotates relative to the fixed combustion cylinder; the outer wall of the drum is also provided with a lifting plate located in the combustion cylinder. Because the combustion tube is fixed, the energy materials in the combustion tube accumulate at the bottom of the combustion tube, the energy materials cannot be fully burned, the combustion efficiency is low, the heat generation is slow, and the heating requirements of the materials in the drum cannot be met. The outer wall is equipped with a lifting plate. During the rotation of the drum, the lifting plate lifts up the energy materials accumulated at the bottom of the combustion tube, so that the energy materials are diffused and burned in the combustion tube, which speeds up the combustion speed and increases the combustion range. The energy materials are fully burned, energy consumption is saved, the heat generated can meet the heating demand, and the combustion efficiency of energy materials is improved.

Description of the drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only It is an embodiment of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on the provided drawings without creative work.

FIG. 1 is a schematic front view of an external thermal rotation device provided by an embodiment of the present invention;

Figure 2 is a schematic structural diagram of a lifting plate of an external thermal rotary device provided by an embodiment of the present invention;

FIG. 3 is a schematic front view of another external thermal rotation device provided by an embodiment of the present invention;

4 is a schematic structural diagram of a cross-section of the external thermal revolving device in FIG. 3;

5 is a schematic diagram of the drum wall structure of the drum of an external thermal rotary device according to an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of an axial cross-section of an external thermal rotation device provided by an embodiment of the present invention;

Fig. 7 is a schematic side view of a combustion cylinder of an external thermal revolving equipment provided by an embodiment of the present invention.

Among them, 1 is the drum, 2 is the combustion cylinder, 21 is the gas inlet and outlet, 22 is the observation port, 23 is the ignition port, 24 is the waste outlet, 3 is the gas communication cavity, 4 is the communication hole, 5 is the spiral material channel, 6 is the lifting plate, 61 is the bending part, and 62 is the leakage gap.

detailed description

The core of the present invention is to provide an external heat revolving equipment, which improves the combustion efficiency of the combustion cylinder.

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

Please refer to Figures 1-2, an embodiment of the present invention provides an external thermal rotary device, including a drum 1 and a combustion tube 2. The combustion tube 2 is sealed on the outer periphery of the drum 1, and the drum 1 is relatively fixedly arranged with the combustion tube 2 Doing a rotating movement; the external thermal rotating equipment also includes a lifting plate 6 arranged on the outer wall of the drum 1 and located in the combustion cylinder 2.

Since the combustion tube 2 is fixed and the energy materials in the combustion tube 2 accumulate at the bottom of the combustion tube 2, the energy materials cannot be fully burned, the combustion efficiency is low, the heat generation is slow, and the heating requirements of the materials in the drum 1 cannot be met. Therefore, a lifting plate 6 is provided on the outer wall of the drum 1. During the rotation of the drum 1, the lifting plate 6 rotates with the drum 1. The lifting plate 6 raises the energy materials accumulated at the bottom of the combustion cylinder 2 to make energy The material diffuses and burns in the combustion cylinder 2, which speeds up the combustion speed, increases the combustion range, fully burns energy materials, saves energy consumption, generates heat that can meet the heating demand, and improves the combustion efficiency of energy materials.

Further, in this embodiment, the number of lifting plates 6 is multiple, and they are distributed along the axial and circumferential directions of the drum 1, so that the energy materials in the combustion cylinder 2 are continuously lifted and scattered to make them fully combustion. More preferably, the lifting plate 6 is evenly distributed on the outer wall of the drum 1, so that the combustion is more uniform and the heat distribution is even.

Furthermore, in this embodiment, the rotating surface formed by the rotation of the ends of all the lifting plates 6 is continuous and uninterrupted in the axial direction of the drum 1, so that all the energy materials at the bottom of the combustion cylinder 2 are lifted, and there is no omission. , The combustion is more complete, avoiding energy waste.

In this embodiment, the hoisting plate surface of the hoisting plate 6 is parallel or inclined to the axial direction of the drum 1. With this arrangement, the flipping area of the hoisting plate surface of the hoisting plate 6 is increased, which can be more and more convenient Ground the material at the bottom of the combustion cylinder 2 and throw it away. The inclined lifting plate 6 can also throw and transfer energy materials in the axial direction, thereby facilitating the transfer of energy materials in the combustion cylinder 2 from the inlet end of the combustion cylinder 2 to the outlet end.

Further, the lifting plate surface of the lifting plate 6 is inclined toward the feeding end of the drum 1 so that the transfer direction of the energy material in the combustion tube 2 is opposite to the moving direction of the material in the drum 1. That is, the positions of the inlet and outlet ends of the combustion cylinder 2 and the positions of the feed end and the discharge end of the drum 1 are reversed. This arrangement ensures that the heat generated by the combustion of the energy substance in the combustion cylinder 2 and the heat absorbed by the material in the drum 1 are mutually exclusive. Balance and improve heat utilization. Of course, the lifting plate surface of the lifting plate 6 can also be inclined toward the discharge end of the drum 1, but the heat utilization rate is not as good as the situation listed in this embodiment.

In this embodiment, the lifting plate 6 extends along the radial direction of the drum 1, and this arrangement can reduce the length of the lifting plate 6.

As shown in Figure 2, this embodiment provides a specific lifting plate 6. The end of the lifting plate 6 is a bending portion 61 that is bent along the rotation direction of the drum 1. The bending portion 61 makes it easier to burn The energy material accumulated at the bottom of the barrel 2 is picked up, and the energy material is temporarily retained in the bending part 61, which is beneficial to lifting and throwing. Of course, the lifting plate 6 can also be a straight plate or an arc-shaped plate, and the inner arc surface of the arc-shaped plate faces the same direction as the rotation direction of the drum, and the lifting plate 6 is not limited to the structure listed in this embodiment.

Further, in this embodiment, the bending portion 61 of the lifting plate 6 is provided with a leakage gap 62, the number of the leakage gap 62 can be one, two or more, and the leakage gap 62 is similar to a finger joint After the energy material is picked up by the bending part 61 of the lifting plate 6, the energy material is scattered and raised through the leakage gap 62 during the lifting process of the lifting plate 6, so that the energy material is diffused more evenly and fully combustion.

As shown in Figures 3-6, in this embodiment, the external thermal revolving equipment further includes a gas communication cavity 3 arranged in the drum 1 and isolated from the inside of the drum 1, and the gas communication cavity 3 and the combustion cylinder 2 are arranged through The communicating hole 4 on the cylinder wall of the drum 1 communicates and is used for introducing the heating gas of the combustion cylinder 2 into the gas communication cavity 3, and the cavity wall of the gas communication cavity 3 is used for heat transfer with the material in the drum 1.

The working process of the external thermal rotary equipment is: the material enters the drum 1, as the drum 1 rotates, in order to ensure the material reaction effect, the drum 1 rotates slowly, and the material slides and moves along the wall of the drum in the drum 1. During this process, burning The heat in the cylinder 2 is transferred to the cylinder 1 through the cylinder wall of the cylinder 1, and the material contacts the cylinder wall to transfer heat during the process of sliding down the cylinder 1. At the same time, the heating gas of the combustion cylinder 2 is introduced into the gas communication cavity 3. The cavity wall of the gas communication cavity 3 is in contact with the material to transfer heat, and the cavity wall of the gas communication cavity 3 radiates heat into the drum 1, compared to the existing one that only passes through the wall of the drum 1 The material is heated. In the present application, the cavity wall of the cavity 3 through the gas communication greatly increases the heat transfer area inside the drum 1, improves the heat transfer efficiency and the heat energy utilization rate, and saves the material reaction time. At the same time, the lifting plate 6 can play the role of air turbulence, so that the gas can enter the gas communication cavity 3 and produce irregular convection movement, so that the heated gas can enter the gas communication cavity 3 more uniformly.

In this embodiment, at least one communication hole 4 is provided between two adjacent lifting plates 6 in the circumferential direction, which is used to disturb the heating gas in the combustion cylinder 2 so that the heating gas enters the gas communication cavity 3 and generates a disturbance. Regular convection. The communication hole 4 can allow the heating gas in the combustion cylinder 2 to enter the gas communication cavity 3, and minimize or avoid the solid or liquid materials in the combustion cylinder 2 from entering the gas communication cavity 3 through the communication hole 4.

In this embodiment, the gas communication cavity 3 is a continuous cavity structure or a plurality of separate cavity structures. A continuous cavity structure is in gas communication with the combustion cylinder 2, or multiple separate cavity structures are in gas communication with the combustion cylinder 2, as long as the heating gas in the combustion cylinder 2 can be introduced into the gas communication cavity 3. , In order to increase the heat transfer area in the drum 1 to achieve multi-directional heating of the material.

Regardless of whether the gas communication cavity 3 is a continuous cavity structure or a multi-part cavity structure, the shape and size of the cavity structure are not limited, and can be any shape, such as a strip cavity structure or a block shape. The cavity structure, special-shaped cavity structure, etc., can also be arranged in the drum 1 arbitrarily, such as along the axial and transverse directions of the drum 1, as long as the material can circulate in the drum 1 and heat transfer through the cavity structure. .

Of course, this embodiment does not limit the shape, size and number of the communicating holes 4. The communicating holes 4 can be of any shape, such as circular, rectangular, elliptical, quincunx, etc., as long as it facilitates the passage of gas. The size of is determined according to the heating demand. If the heating demand is large, a larger communicating hole 4 can be provided to ensure sufficient circulation of heating gas. On the contrary, a smaller communicating hole 4 can be provided. The number of communicating holes 4 is also set according to the heating demand. The larger the number of communicating holes 4, the smoother the circulation of the heating gas in the gas communication cavity 3 and the faster the heating speed. Otherwise, the slower the heating speed, but at the same time It is ensured that the solid and liquid materials in the combustion cylinder 2 are prevented from entering the gas communication cavity 3 as much as possible.

Further, in this embodiment, one side cavity wall of the gas communication cavity 3 is fixed or shared with the inner wall of the drum 1, that is, the gas communication cavity 3 is seated and fixed on the inner wall of the drum 1, and the gas communication The cavity wall on the side of the cavity 3 used for seating can be an independent cavity wall or can be shared with the inner wall of the drum 1. The communication hole 4 is opened on the cylinder wall where the gas communication cavity 3 and the drum 1 are attached or shared, and the gas communication cavity 3 and the combustion cylinder 2 maintain gas communication through the communication hole 4. By placing the gas communication cavity 3 on the wall of the drum 1, the material in the drum 1 can be made to slide down along the wall of the drum 1 to increase the contact heat transfer with the cavity wall of the gas communication cavity 3 Opportunity to delay the speed of material movement, thereby further improving heat transfer efficiency.

Of course, the gas communication cavity 3 can also be suspended in the drum 1. The cavity wall of the gas communication cavity 3 does not contact the inner wall of the drum 1, but is suspended and fixed by a supporting structure. Correspondingly, the gas communication cavity 3 communicates with the communication hole 4 on the cylinder wall of the drum 1 through a communication tube to achieve gas communication. With this arrangement, the material may seldom contact the cavity wall of the gas communication cavity 3 during the movement in the drum 1, but heat radiation heating through the cavity wall of the gas communication cavity 3 can also improve the heat transfer efficiency.

As shown in Figures 4 and 6, further, in this embodiment, the gas communication cavity 3 is preferably one or more sets of spiral structure cavities, which spirally extend along the axial direction of the drum 1, and the spiral structure The side walls of the cavity and the cylinder wall of the drum 1 form a spiral material channel 5. Multiple sets of spiral structure cavities are arranged in sequence along the axial direction of the drum 1, and combined to form a continuous spiral material channel 5, the spiral structure cavity forms a spiral Gas channel. After being arranged in this way, the spiral structure cavity can make full use of the space in the drum 1 to provide radial and axial heat convection, heat conduction, and heat radiation channels between the drum 1 and the combustion cylinder 2, and greatly increase the heat transfer area. When working, after the material enters the drum 1 from the feeding end of the drum 1, as the drum 1 rotates, the material gradually moves from the feeding end to the discharging end of the drum 1 in the spiral material channel 5. The material is rotated by the spiral The structural cavity drives the automatic backward movement. Therefore, the drum 1 can be placed horizontally, and the feeding end does not need to be inclined to be set higher than the discharge end. When the material moves in the spiral material channel 5, the material is always in contact with the side wall of the spiral structure cavity and the cylinder wall of the drum 1 to transfer heat, and the running path of the material is extended, and the residence time of the material in the drum 1 is increased. The material is fully heated, which further improves the heat transfer efficiency and is more conducive to the progress of the material reaction.

Of course, if the gas communication cavity 3 does not use a spiral structure cavity, in order to facilitate the movement of the material from the feeding end to the discharging end, the feeding end of the drum 1 is inclined to be higher than the discharging end, using the weight of the material and the rotation of the drum 1 Realize the automatic movement of materials.

As shown in Figure 5, further, in this embodiment, one or more communicating holes 4 are opened on the cylindrical wall where the spiral structure cavity is attached to or shared with the drum 1, and the multiple communicating holes 4 are arranged along the spiral direction. . If a communicating hole 4 is provided, heating gas with a certain pressure in the combustion cylinder 2 is used to enter the spiral structure cavity through the communicating hole 4. In order to fill the spiral structure cavity with the heating gas, a communicating hole 4 is provided in the spiral structure At one end of the cavity, the heating gas gradually fills the whole cavity from one end of the spiral structure cavity. The communicating hole 4 is preferably arranged at the end of the spiral structure cavity close to the discharge end, so that the flow direction of the heating gas is opposite to the direction of material movement to further Improve heat transfer efficiency. If multiple communicating holes 4 are provided, the multiple communicating holes 4 are arranged along the spiral direction of the spiral structure cavity. Preferably, the multiple communicating holes 4 are uniformly distributed to further improve the uniformity of gas heat transfer.

Further, in this embodiment, the spiral structure cavity is an annular spiral structure cavity, and there is a radial distance between the inner ring of the annular spiral structure cavity and the axis of the drum 1. With this arrangement, the central part of the annular spiral structure cavity forms a hollow area penetrating the axial direction of the drum 1, and the gas generated by the reaction in the drum 1 can circulate through the hollow area more smoothly.

Of course, the spiral structure cavity may not have a hollow area, and the gas generated by the reaction in the drum 1 can also be spirally transported in the spiral material channel 5, but the gas transport path is longer.

As an optimization, in this embodiment, the difference between the outer ring diameter and the inner ring diameter of the annular spiral structure cavity is greater than 5 cm, and the outer ring diameter and the inner ring diameter of the annular spiral structure cavity are determined according to heating requirements and the gas delivery requirements in the drum 1. The difference in inner ring diameter. The determination of the difference needs to ensure the temperature difference between the combustion cylinder 2 and the drum 1 so that the material can fully react while avoiding rapid coking.

As an optimization, in this embodiment, the width between the two side walls of the spiral structure cavity is 1 cm to 100 cm, and the width determines the size of the gas spiral channel inside the spiral structure cavity, which in turn determines the heating capacity The size and heat dissipation area, as well as to ensure the generation of convection and turbulence of the hot air flow. More preferably, the width between the two side walls is about 50 cm.

In this embodiment, the pitch of the spiral structure cavity is equal pitch or variable pitch, and the pitch is greater than 1 cm. The pitch form and pitch size are determined according to the temperature gradient and carbonization requirements of different axial sections in the drum 1.

As shown in FIG. 7, the combustion cylinder 2 is optimized. In this embodiment, the cylinder body of the combustion cylinder 2 is provided with an observation port 22, an ignition port 23, a gas inlet and outlet 21 and a waste outlet 24. The combustion cylinder 2 is used to burn energy materials, such as liquid energy materials, solid energy materials, etc. The heated gas generated enters the gas communication cavity 3 through the communication hole 4 on the cylinder wall of the drum 1, and the remaining waste after combustion passes The waste outlet 24 exits the combustion cylinder. The gas inlet and outlet 21 are used to discharge the gas in the combustion cylinder and to enter the outside gas. The ignition port 23 is used to ignite the energy substance in the combustion cylinder. The observation port 22 is used to observe the combustion situation in the combustion cylinder.

In this embodiment, the external thermal revolving equipment also includes a temperature sensor and/or pressure sensor arranged in the combustion cylinder 2 and/or the drum 1. The temperature sensor detects the temperature in the combustion cylinder 2 and/or the drum 1, and the pressure The sensor detects the pressure in the combustion cylinder 2 and/or the drum 1, and then controls the reaction manually or automatically according to the detected temperature and pressure.

In this embodiment, the drum 1 is driven to rotate by a driving device. The driving device mainly includes a motor, a reducer, a gear ring, a supporting roller, and a rotating ring. The rotating ring is preferably arranged on the outer periphery of the two ends of the drum 1, and the rotating ring passes below The supporting roller is rotated and supported, and the motor is decelerated by a reducer to cooperate with the ring gear. The ring gear is fixed on the outer circumference of one end of the drum 1, and the motor drives the ring gear to rotate, thereby driving the drum 1 to rotate. Of course, the driving device may also have other structural forms, and is not limited to the forms listed in this embodiment.

In this embodiment, the two ends of the combustion cylinder 2 and the outer cylinder wall of the drum 1 are connected in a rotary and sealed contact friction type. Since the drum 1 rotates slowly, a simple rotating structure can be used to realize the rotary sealing connection between the combustion cylinder 2 and the drum 1. In order to improve the structural strength of the rotating seal part, the wall thickness of the drum 1 is increased at the position where the drum 1 contacts and rubs with the combustion tube 2. Of course, the combustion cylinder 2 and the drum 1 can also be connected in a rotary sealing manner through other rotary sealing structures.

The various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments can be referred to each other.

The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown in this document, but should conform to the widest scope consistent with the principles and novel features disclosed in this document.

Claims

An external heat revolving equipment, comprising a drum (1) and a combustion tube (2), the combustion tube (2) is sealed and sleeved on the outer circumference of the drum (1), and the drum (1) is relatively fixedly arranged at all The combustion cylinder (2) makes a rotating movement; it is characterized in that it also includes a lifting plate (6) arranged on the outer wall of the drum (1) and located in the combustion cylinder (2).
The external heat revolving equipment according to claim 1, characterized in that the lifting plate (6) is distributed along the axial and circumferential directions of the drum (1).
The external heat revolving god according to claim 2, characterized in that the rotating surface formed by the rotation of the ends of the plurality of lifting plates (6) is continuous in the axial direction of the drum (1).
The external heat revolving equipment according to claim 1, characterized in that the surface of the lifting plate (6) is parallel or inclined to the axial direction of the drum (1).
The external heat revolving equipment according to claim 4, characterized in that the lifting plate surface of the lifting plate (6) is inclined toward the feeding end of the drum (1), so that the combustion cylinder (2) The conveying direction of the energy material inside is opposite to the moving direction of the material in the drum (1).
The external heat revolving equipment according to claim 1, characterized in that the end of the lifting plate (6) is a bending part (61) bent along the rotation direction of the drum (1).
The external heat revolving equipment according to claim 6, characterized in that the bent portion (61) of the lifting plate (6) is provided with a leakage gap (62).
The external thermal revolving equipment according to any one of claims 1-7, further comprising a gas communication cavity (3) arranged in the drum (1) and isolated from the inside of the drum (1) , The gas communication cavity (3) and the combustion cylinder (2) are in communication through a communication hole (4) provided on the cylinder wall of the drum (1), for connecting the combustion cylinder (2) The heating gas is introduced into the gas communicating cavity (3), and the cavity wall of the gas communicating cavity (3) is used for heat transfer with the material in the drum (1).
The external thermal rotary kiln according to claim 8, characterized in that, at least one communicating hole (4) is provided between two adjacent lifting plates (6) in the circumferential direction for disturbing the The heating gas in the combustion cylinder (2) causes the heating gas to enter the gas communication cavity (3) and produce irregular convection.
The external thermal revolving equipment according to claim 8, characterized in that the gas communication cavity (3) is a continuous cavity structure or a plurality of divided cavity structures.
The external heat revolving equipment according to claim 8, characterized in that, one side of the cavity wall of the gas communication cavity (3) is fixed or shared with the inner wall of the drum (1), and the gas communication The cavity (3) and the drum (1) are attached to or shared by the cylinder wall with the communication hole (4).
The external heat revolving equipment according to claim 8, characterized in that, the gas communication cavity (3) is one or more groups of spiral structure cavities, and the spiral structure cavities are along the line of the drum (1). Axial spiral extension, the side wall of the spiral structure cavity and the cylinder wall of the drum (1) form a spiral material channel (5).
The external thermal revolving equipment according to claim 12, characterized in that one or more communicating holes (4) are opened on the cylinder wall where the spiral structure cavity is attached to or shared with the drum (1), A plurality of the communication holes (4) are arranged in a spiral direction.
The external thermal revolving equipment according to claim 13, wherein the spiral structure cavity is an annular spiral structure cavity, and the inner ring of the annular spiral structure cavity is between the axis of the drum (1) There is a radial spacing.
The external thermal rotary equipment according to claim 8, characterized in that the cylinder body of the combustion cylinder (2) is provided with an observation port (22), an ignition port (23), a gas inlet and outlet (21) and a waste outlet (twenty four).
The external thermal revolving equipment according to claim 8, characterized in that the two ends of the combustion cylinder (2) and the outer cylinder wall of the drum (1) are connected in a contact friction type rotary sealing connection.