Rotary kiln with closing-in and discharging mechanism

Abstract

The rotary kiln comprises a feeding mechanism, a kiln body, a discharging mechanism and sealing assemblies, the feeding mechanism extends into the kiln body from one end of the kiln body, the discharging mechanism extends out of the kiln body from the other end of the kiln body, and the sealing assemblies are installed at the two ends of the kiln body and the installation positions of the feeding mechanism and the discharging mechanism. A material receiving and raising plate is installed on the inner wall of the kiln body, the discharging mechanism comprises a discharging spiral structure and a discharging port, the discharging spiral structure extends out of the interior of the kiln body, and the discharging port is installed at the end, located outside the kiln body, of the discharging spiral structure. The kiln body rotates to drive the material collecting and raising plate to rotate, materials are brought to the upper portion to fall into the discharging spiral structure, the discharging spiral structure brings the materials out of the kiln body to the discharging port to be discharged, the materials in the large-diameter kiln body are conveyed to the small-diameter discharging spiral structure, the closing-up diameter of the rotary kiln is reduced, and the sealing effect of the kiln body is guaranteed. And the diameter of the kiln body does not need to be considered, and application is not limited.

Description

Technical Field

[0001] The utility model relates to the technical field of industrial kilns, in particular to a rotary kiln with a closing and discharging mechanism. Background Art

[0002] Rotary kiln is a thermal equipment widely used in cement, metallurgy, ceramics, environmental protection and other industries. It is mainly composed of a feeding mechanism, a kiln head, a kiln tail, a cylinder and a discharging mechanism. There are dynamic sealing connections between the kiln head, the kiln tail and the cylinder. The traditional discharging mechanism inserts the kiln body directly into the kiln tail cover, and adds a guide plate to the kiln tail cover to transport the material to the discharging port through the guide plate. However, the kiln tail in the discharging mechanism is not closed, which is prone to leakage.

[0003] In order to solve the above problems, in patent CN101984318A, the kiln tail is designed to be a conical structure, and the kiln tail outlet is tightened. In actual application, when the kiln tail is a conical structure, a guide mechanism needs to be installed at the conical structure to guide the material out. However, in order to ensure that the material flows out of the kiln body smoothly, the opening of the conical structure needs to be larger than the guide mechanism, and the angle of the conical structure cannot be too large or the kiln body structure needs to be extended to provide a suitable transportation angle for the guide plate. Although the conical structure is used to close the kiln body discharge point, the opening is still large, which has a certain impact on the sealing effect. In addition, in actual application, the conical structure cannot be universally used on kiln bodies of different diameters, and the application range is relatively small. Therefore, the present application proposes a rotary kiln with a closed discharge mechanism to further reduce the opening of the rotary kiln discharge mechanism. Utility Model Content

[0004] In order to solve the technical problem that in the above-mentioned rotary kiln discharging mechanism, in order to ensure the sealing of the kiln tail, the conical angle of the discharging mechanism needs to be adjusted according to the kiln body structure, and the discharging mechanism cannot be universal, the utility model provides a rotary kiln with a closing discharging mechanism.

[0005] To achieve the above-mentioned purpose, the utility model provides a rotary kiln with a closing and discharging mechanism, comprising: a feeding mechanism, a kiln body, a discharging mechanism and a sealing assembly, wherein the feeding mechanism extends into the kiln body from one end of the kiln body, and the discharging mechanism extends out of the kiln body from the other end of the kiln body, and the sealing assemblies are installed at both ends of the kiln body and at the installation positions of the feeding mechanism and the discharging mechanism; a material collecting and lifting plate is welded on the inner wall of the kiln body, the discharging mechanism comprises a discharging spiral structure and a discharging port, the discharging spiral structure extends from the inside of the kiln body, and the discharging port is installed on one end of the discharging spiral structure located outside the kiln body.

[0006] Furthermore, the material collecting and lifting plate is bent at a certain angle.

[0007] Furthermore, a material collecting trough is provided at the top of the material discharging spiral structure, the opening position of the material collecting trough corresponds to the installation position of the material collecting and lifting plate, and the opening direction of the material collecting trough is upward.

[0008] Furthermore, the sealing assembly includes a rotary kiln end face sealing plate and a dynamic sealing assembly, the rotary kiln end face sealing plate is installed at both ends of the kiln body, a through hole is opened in the center of the rotary kiln end face sealing plate, the discharge spiral structure passes through the through hole, and a closing conduit is welded on the outer side of the kiln body on the rotary kiln end face sealing plate, and the closing conduit is arranged around the through hole; one end of the dynamic sealing assembly is welded to the discharge spiral structure.

[0009] Furthermore, a heat insulating sleeve is welded around the closing conduit, the heat insulating sleeve and the closing conduit form an internal hollow sealing structure, and the hollow structure between the closing conduit and the heat insulating sleeve is filled with heat insulating material.

[0010] Furthermore, the dynamic seal assembly includes a dynamic seal fixing plate and a dynamic seal connecting piece, the dynamic seal fixing plate and the dynamic seal connecting piece are fixedly connected, the dynamic seal fixing plate is welded to the discharge spiral structure, and the dynamic seal connecting piece is sleeved onto the outer wall of the insulation sleeve.

[0011] Furthermore, the material receiving and raising plate can also be welded to the rotary kiln end face sealing plate on the material discharging side of the kiln body, and the material receiving and raising plate extends toward the inside of the kiln body.

[0012] Furthermore, a plurality of material collecting and raising plates are provided, and the plurality of material collecting and raising plates are evenly distributed around the collecting trough on the inner wall of the kiln body or evenly distributed on the edge of the end sealing plate of the rotary kiln.

[0013] Furthermore, it also includes a bracket, which is installed below the discharge spiral structure, the bottom surface of the dynamic seal fixing plate is in contact with the upper surface of the bracket, and the tail of the discharge spiral structure is equipped with a motor, which is arranged on the upper surface of the bracket.

[0014] Furthermore, the discharge port is a closed outlet.

[0015] The above technical solution of the utility model has the following advantages compared with the prior art:

[0016] (1) The rotation of the kiln body drives the material collecting and lifting plate to rotate. The material collecting and lifting plate brings the material below to the top of the discharge spiral structure. The material falls into the discharge spiral structure. The discharge spiral structure brings the material out of the kiln body to the outside of the kiln body and discharges it from the discharge port. Through this structure, the material in the large-diameter kiln body can be transported to the small-diameter discharge spiral, reducing the closing diameter of the rotary kiln and ensuring the sealing effect of the kiln body. There is no need to consider the size of the kiln body diameter, and the application is not restricted;

[0017] (2) The material collecting and lifting plates are bent at a certain angle, which can carry more materials when the kiln body rotates, and can also prevent the materials from falling before reaching the top of the discharge spiral. In addition, multiple material collecting and lifting plates are arranged on the inner wall of the kiln body to ensure the stability of the discharge;

[0018] (3) A dynamic sealing assembly is provided at the installation position of the discharge spiral and the kiln body, further ensuring the sealing connection between the spiral rod and the kiln body. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 It is a structural schematic diagram of a rotary kiln with a closing and discharging mechanism according to the first embodiment of the utility model;

[0021] Figure 2 It is a cross-sectional view of one side of the kiln body of the rotary kiln with a closing and discharging mechanism according to the first embodiment of the utility model.

[0022] Description of the Figures in the Specification:

[0023] Feeding mechanism-1; kiln body-2; discharging mechanism-3; discharging spiral structure-31; discharging spiral rod-31-1; material conveying bin-31-2; motor-31-3; discharging port-32; sealing assembly-4; rotary kiln end face sealing plate-41; dynamic sealing assembly-42; dynamic sealing fixing plate-42-1; dynamic sealing connector-42-2; material collecting and lifting plate-5; collecting trough-6; closing conduit-7; thermal insulation sleeve-8; bracket-9. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Embodiment 1

[0026] Reference below Figures 1-2A rotary kiln with a closing discharging mechanism according to an embodiment of the utility model is described, comprising a feeding mechanism 1, a kiln body 2, a discharging mechanism 3 and a sealing assembly 4, wherein the feeding mechanism 1 extends into the kiln body from one end of the kiln body 2 to feed the kiln body 2, and the discharging mechanism 3 extends into the kiln body from the other end of the kiln body 2 to bring out the materials in the kiln body to complete the discharging process, and sealing assemblies 4 are installed on the side surfaces of both ends of the kiln body 2 and at the connection positions between the feeding mechanism 1 and the discharging mechanism 3 and the kiln body 2 to seal the internal space of the kiln body, and the sealing assembly 4 used for sealing between the feeding and discharging mechanisms and the kiln body 2 is fixed on the feeding mechanism 1 and the discharging mechanism 3, and achieves a sealing effect from the outside of the kiln body 2, in order to achieve that the discharging mechanism does not affect the discharging process of the rotary kiln when the diameter is small, a collecting and lifting plate 5 is welded on the inner wall of the kiln body 2, and when the kiln body 2 rotates, the collecting and lifting plate 5 also rotates, and the materials located inside the kiln body are discharged from the kiln body 2 through the collecting and lifting plate 5. The bottom of the kiln body 2 rotates to the top of the kiln body 2, and the discharging mechanism 3 installed at one end of the kiln body 2 includes a discharging spiral structure 31 and a discharging port 32. The material rotated to the top of the kiln body 2 falls into the discharging spiral structure 31 by gravity. The discharging spiral structure 31 extends from the inside of the kiln body 2 to the outside of the kiln body and brings the falling material out of the kiln body. In addition, the discharging port 32 is installed on the discharging spiral structure 31 at one end outside the kiln body, and the material is brought out from the kiln body to the outside of the kiln body and discharged from the discharging port 32 at one end. The discharging process of the rotary kiln is completed. The discharging structure 3 in this embodiment transports the material in the kiln to the discharging spiral structure 31 through the material collecting and lifting plate 5. The discharging spiral structure 31 brings the material out of the kiln body and discharges it from the discharging port 32. The material is transported from the large-diameter kiln body 2 to the small-diameter discharging spiral structure 31. The closing end of the kiln body 2 at the discharging end is the same as the radial size of the discharging spiral structure 31, which further reduces the closing end of the kiln body at the discharging position, which is beneficial to the sealing work.

[0027] Furthermore, a plurality of material collecting and raising plates 5 can be welded, and the plurality of material collecting and raising plates 5 are evenly distributed on the inner wall of the kiln body 2 around the material collecting trough 6, so that the material can be discharged at a uniform speed.

[0028] In this embodiment, the sealing assembly 4 includes a rotary kiln end face sealing plate 41 and a dynamic sealing assembly 42. The rotary kiln end face sealing plate 41 is installed at both ends of the kiln body 2 to cover both sides of the kiln body 2 for sealing. A through hole is opened in the center of the rotary kiln end face sealing plate 41. The rotary kiln end face sealing plate 41 is installed at the feeding end of the kiln body 2, and its central through hole passes through the feeding mechanism 1. The rotary kiln end face sealing plate 41 is installed at the discharging end of the kiln body 2, and its central through hole passes through the discharging mechanism 3, that is, the discharging spiral structure 31. A closing conduit 7 is welded on the outer side of the kiln body 2 on the rotary kiln end face sealing plate 41. The closing conduit 7 is arranged around the through hole, and the closing conduit 7 extends the opening positions on both sides of the kiln body outward. One end of the dynamic sealing assembly 42 is welded to the discharging spiral structure 31, which provides a position for the installation of the sealing assembly 42, and at the same time reduces the required sealing caliber, thereby reducing the difficulty of sealing.

[0029] In this embodiment, the material discharging spiral structure 31 includes a material discharging spiral rod 31-1, a material conveying bin 31-2 and a motor 31-3. The material conveying bin 31-2 extends from one side of the kiln body 2, and the material conveying bin 31-2 passes through the rotary kiln end face sealing plate 41 to enter the interior of the kiln body 2. The size of the through hole on the rotary kiln end face sealing plate 41 is the same as the size of the bin surface of the material conveying bin 31-2. The material discharging spiral rod 31-1 is arranged inside the material conveying bin 31-2, and the motor 31-3 is connected to the tail end of the material discharging spiral rod 31-1. The motor 31-3 is fixedly connected to one end of the material conveying bin 31-2. A collecting trough 6 is opened on the top of the material conveying bin 31-2 located inside the kiln body 2. The position of the material trough 6 corresponds to the length of the material receiving and lifting plate 5, and the opening direction of the material trough 6 is upward. When the material falls from above, it falls into the discharge spiral structure 31 through the material trough 6. Since the position of the material trough 6 corresponds to the length of the material receiving and lifting plate 5, it is ensured that the material can fall into the material trough 6 instead of other positions when it falls. Furthermore, the length of the part of the discharge spiral structure 31 extending into the interior of the kiln body 2 is greater than the length of the material receiving and lifting plate 5, which is convenient for the discharge spiral structure 31 to receive the fallen material. Preferably, the material trough 6 is a U-shaped trough with an open upper part, and the two sides of the U-shaped trough are higher than the discharge spiral rod inside the discharge spiral structure 31, so as to better collect the material falling from above.

[0030] It should be noted that when the material falls, it falls into the collecting trough 6. The motor 31-3 is installed at one end of the discharging screw rod 31-1, driving the discharging screw rod 31-1 to rotate. The discharging screw rod 31-1 is installed inside the material conveying bin 31-2, and the material is brought from the collecting trough 6 in the kiln to the outside part of the material conveying bin 31-2. The discharge port 32 is opened at the bottom of the material conveying bin 31-2 located outside the kiln body 2 to discharge the material. This arrangement enables the kiln body 2 to only open an opening of the same size as the material conveying bin 31-2 on the rotary kiln end face sealing plate 41 when discharging. Preferably, the inner diameter of the bin surface of the material conveying bin 31-2 is the same as the outer diameter of the screw rod of the discharging screw rod 31-1, which can minimize the opening size of the rotary kiln end face sealing plate 41.

[0031] In this embodiment, refer to Figure 2 The material collecting and raising plate 5 is bent at a certain angle, which is convenient for taking the material at the bottom of the kiln body during the rotational movement and rotating together, and can also prevent the material from falling before it rotates to the top. The shape of the material collecting and raising plate 5 can be various. As a preferred embodiment, the material collecting and raising plate 5 can be bent at a certain angle from the middle so that the angle formed between the upper half and the lower half of the material collecting and raising plate 5 is less than 180°; the material collecting and raising plate 5 can also be an arc-shaped structure. If it is an arc-shaped structure, the angle of the arc-shaped structure cannot be less than 90 degrees; the material collecting and raising plate 5 can also be a wavy structure, and the specific shape of the material collecting and raising plate 5 is not limited here.

[0032] In this embodiment, the heat insulating sleeve 8 is sleeved on the outer periphery of the closing conduit 7, and the heat insulating sleeve 8 and the closing conduit 7 are welded around one end side, so that the heat insulating sleeve 8 and the closing conduit 7 together constitute an internal hollow sealing structure, the closing conduit 7 is made of high-temperature resistant steel plate material, and the heat insulating sleeve 8 can be made of refractory heat insulating materials such as aluminum plate and ceramic. In addition, the hollow structure between the closing conduit 7 and the heat insulating sleeve 8 is filled with heat insulating materials, and the heat insulating materials used are glass wool, silica aerogel, vermiculite, etc. Since the kiln body 2 is a through hole opened at the closing conduit 7, the temperature in the kiln body 2 will dissipate from the closing conduit 7, and insulation can be performed by welding the heat insulating sleeve 8 and the filled heat insulating material to prevent heat from dissipating from the connection.

[0033] In this embodiment, the dynamic seal assembly 42 includes a dynamic seal fixing plate 42-1 and a dynamic seal connecting piece 42-2. One end of the dynamic seal fixing plate 42-1 is welded to the discharge spiral structure 31, and the other end is fixedly connected to the dynamic seal connecting piece 42-2. The dynamic seal connecting piece 42-2 is sleeved on the outer wall of the insulation sleeve 6, and the dynamic seal connecting piece 42-2 is pressed against the surface of the insulation sleeve 6 to achieve a sealing effect.

[0034] In this embodiment, a rotary kiln with a closing discharging mechanism includes a bracket 9, which is installed below the discharging spiral structure 31 and is used to support the discharging spiral structure 31. Specifically, the upper surface of the bracket 9 is in contact with the bottom surface of the dynamic sealing fixing plate 42-1 welded on the discharging spiral structure 31. In addition, a motor is installed at the tail of the discharging spiral structure 31. The motor is placed on the upper surface of the bracket 9. By supporting the motor and the dynamic sealing fixing plate 42-1, the effect of supporting the discharging spiral structure 31 is achieved.

[0035] In this embodiment, the discharge port 32 is a closed outlet, specifically: a discharge bin is connected below the discharge port 32, and the discharge bin is welded to the outer wall of the discharge port 32 to achieve a sealing effect; in addition, a discharge valve that can seal the discharge can be set at the top of the discharge port 32, and the discharge valve can ensure the airtightness of the internal space during discharge, further ensuring the sealing effect of the kiln body.

[0036] The working principle of the rotary kiln in this embodiment is as follows: materials are put into the feeding mechanism 1 located at one end of the kiln body 2, the kiln body 2 rotates, and the materials are transported from the feeding end to the discharging end. A plurality of curved material collecting and raising plates 5 are installed on the inner wall of the kiln body 2. As the kiln body 2 rotates continuously, the materials are driven to rotate together through the material collecting and raising plates 5. When the materials rotate to the top, they fall down from the material collecting and raising plates 5 due to gravity and fall into the U-shaped collecting trough 6 on the same vertical plane as the materials, that is, fall into the discharging spiral structure 31 in the discharging mechanism 3. The discharging spiral structure 31 drives the internal discharging spiral rod to rotate through the motor, and brings the materials out of the kiln until they reach the position of the discharging port 32. The materials are discharged from the discharging port 32 In this embodiment, the rotary kiln utilizes the rotation of the kiln body 2 and combines the horizontal discharge screw structure 31 to control the opening of the discharge position to be the same size as the spiral mechanism. The aperture of the opening is small, and there is no need to adjust the kiln body itself. It can be directly installed and used. The installation operation is simple, and the sealing operation is easy to perform due to the small opening, which also ensures the sealing effect. When the rotary kiln is discharging, the end face sealing plates 41 of the rotary kiln are sealed at both ends of the kiln body 2 to achieve the end face sealing of the kiln body. In addition, a closing conduit 7 is installed at the connection position between the kiln body 2 and the discharge spiral structure 31, and a dynamic sealing assembly 42 is set to be sleeved on the outside of the closing conduit 7 to ensure the sealing of the connection. In addition, a heat insulation sleeve and heat insulation material are sleeved on the closing conduit 7 to achieve the insulation effect.

[0037] Embodiment 2

[0038] This embodiment is different from the first embodiment in that the material collecting and raising plate 5 in this embodiment is welded to the rotary kiln end face sealing plate 41 on the discharge side of the kiln body and extends toward the inside of the kiln body. Since the rotary kiln end face sealing plate 41 is fixedly mounted on the side of the kiln body 2 to achieve the sealing of the kiln body 2, when the kiln body 2 rotates, the material collecting and raising plate 5 will also rotate, thereby driving the material collecting and raising plate 5 to rotate, and then driving the material to rotate.

[0039] In this embodiment, multiple collecting and raising plates 5 can also be provided, and multiple collecting and raising plates 5 are evenly distributed and installed along the ring line of the edge of the rotary kiln end sealing plate 41 to ensure the stability of the collecting and raising plates in carrying materials and to ensure the discharge of materials.

[0040] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention is described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A rotary kiln with a closing and discharging mechanism, characterized in that: include: A feeding mechanism (1), a kiln body (2), a discharging mechanism (3) and a sealing assembly (4), wherein the feeding mechanism (1) extends from one end of the kiln body (2) into the kiln body, and the discharging mechanism (3) extends from the other end of the kiln body (2) out of the kiln body, and the sealing assembly (4) is installed at both ends of the kiln body (2) and at the installation positions of the feeding mechanism (1) and the discharging mechanism (3); A material collecting and lifting plate (5) is welded on the inner wall of the kiln body (2), and the discharging mechanism (3) comprises a discharging spiral structure (31) and a discharging port (32). The discharging spiral structure (31) extends from the inside of the kiln body (2), and the discharging port (32) is installed on one end of the discharging spiral structure (31) outside the kiln body.

2. The rotary kiln with a closing and discharging mechanism according to claim 1, characterized in that: The material collecting and lifting plate (5) is bent at a certain angle.

3. The rotary kiln with a closing and discharging mechanism according to claim 1, characterized in that: The material discharging spiral structure (31) comprises a material discharging spiral rod (31-1), a material conveying bin (31-2) and a motor (31-3); the material conveying bin (31-2) extends from one side of the kiln body (2); the material discharging spiral rod (31-1) is arranged inside the material conveying bin (31-2); the motor (31-3) is connected to the tail end of the material discharging spiral rod (31-1); the motor (31-3) is fixedly connected to one end of the material conveying bin (31-2); a material collecting trough (6) is opened on the top of the material conveying bin (31-2) inside the kiln body (2); the opening position of the material collecting trough (6) corresponds to the installation position of the material collecting and lifting plate (5); and the opening direction of the material collecting trough (6) is upward.

4. The rotary kiln with a closing and discharging mechanism according to claim 3, characterized in that: The sealing assembly (4) comprises a rotary kiln end face sealing plate (41) and a dynamic sealing assembly (42), wherein the rotary kiln end face sealing plate (41) is installed at both ends of the kiln body (2), a through hole is provided at the center of the rotary kiln end face sealing plate (41), the discharge spiral structure (31) passes through the through hole, a closing conduit (7) is welded on the outer side of the kiln body (2) on the rotary kiln end face sealing plate (41), and the closing conduit (7) is arranged around the through hole; one end of the dynamic sealing assembly (42) is welded to the discharge spiral structure (31).

5. The rotary kiln with a closing and discharging mechanism according to claim 4, characterized in that: A heat insulating sleeve (8) is welded around the closing conduit (7), the heat insulating sleeve (8) and the closing conduit (7) form an internal hollow sealing structure, and the hollow structure between the closing conduit (7) and the heat insulating sleeve (8) is filled with heat insulating material.

6. The rotary kiln with a closing and discharging mechanism according to claim 5, characterized in that: The dynamic seal assembly (42) comprises a dynamic seal fixing plate (42-1) and a dynamic seal connecting piece (42-2), the dynamic seal fixing plate (42-1) and the dynamic seal connecting piece (42-2) being fixedly connected, the dynamic seal fixing plate (42-1) being welded to the discharge spiral structure (31), and the dynamic seal connecting piece (42-2) being sleeved onto the outer wall of the heat insulation sleeve (8).

7. The rotary kiln with a closing and discharging mechanism according to claim 4, characterized in that: The material collecting and raising plate (5) can also be welded to the rotary kiln end face sealing plate (41) on the material discharging side of the kiln body, and the material collecting and raising plate (5) extends toward the inside of the kiln body.

8. The rotary kiln with a closing and discharging mechanism according to claim 7, characterized in that: The material collecting and raising plates (5) are provided in plurality, and the plurality of material collecting and raising plates (5) are evenly distributed on the inner wall of the kiln body (2) around the material collecting trough (6) or evenly distributed on the edge of the rotary kiln end face sealing plate (41).

9. The rotary kiln with a closing and discharging mechanism according to claim 6, characterized in that: It also includes a bracket (9), which is installed below the discharge spiral structure (31), the bottom surface of the dynamic seal fixing plate (42-1) is in contact with the upper surface of the bracket (9), and the tail of the discharge spiral structure (31) is equipped with a motor, which is arranged on the upper surface of the bracket (9).

10. The rotary kiln with a closing and discharging mechanism according to claim 3, characterized in that: The discharge port (32) is a closed outlet.

Images