Bidirectional feeding rotary kiln

Abstract

The two-way feeding rotary kiln comprises a leftward kiln body and a rightward kiln body, the leftward kiln body and the rightward kiln body are the same in structure, a discharging mechanism is arranged between the leftward kiln body and the rightward kiln body, and the leftward kiln body and the rightward kiln body are arranged in an axial symmetry mode with the discharging mechanism as the axis. And the leftward kiln and the rightward kiln are obliquely arranged downwards towards the discharging mechanism in the middle. Left and right bidirectional feeding can be achieved, materials entering from the two sides can be calcined in the rotary furnace body along with the rotary furnace body, discharging can be completed from the discharging area in the middle, the calcining efficiency of the kiln can be effectively improved, and the structural arrangement is reasonable; the heating mechanism, the supporting bearing and the driving mechanism are reasonably arranged, the rotary furnace body installed inside can be supported under the condition that the fixed furnace body on the outer side is fixed, the rotary furnace body is driven to rotate through the driving mechanism, the heating mechanism correspondingly heats the rotary furnace body, and materials are reasonably calcined.

Description

Technical Field

[0001] The invention relates to the technical equipment fields of combustion furnaces, experimental furnaces, kilns and the like, in particular to a rotary kiln with bidirectional feeding. Background Art

[0002] In the prior art, a rotary kiln is a calcining furnace, which is mainly used for calcining various materials. The structure of the rotary kiln in the prior art usually includes an external fixed furnace body and an internal rotatable furnace body. The inner rotating furnace body is equipped with heating components, and the inner rotating furnace body is heated by these heating components. The material entering the rotating furnace body moves in a circle under the drive of the rotating furnace body. The rotary kiln uses the rotating motion of the cylinder to make the material fully contact with the heat generated by the combustion of the fuel to complete the physical and chemical changes.

[0003] The core process of the rotary kiln includes: fuel combustion releases heat, heat is transferred to the material, the material undergoes calcination, roasting and other reactions at high temperature, and finally forms a finished product.

[0004] The structural design of the rotary kiln in the prior art, for example: "A rotary energy-saving kiln" disclosed in Publication (Announcement) No. CN203704647U, "A multifunctional environmentally friendly energy-saving rotary kiln" disclosed in Publication (Announcement) No. CN105737597B, "A heating furnace for facilitating uniform heating" disclosed in Publication (Announcement) No. CN119594709A, etc., all have a two-layer furnace structure in terms of their technical structure.

[0005] However, the prior art basically only has a feeding mechanism for one direction, feeding on the left side or feeding on the right side, and then the material is discharged in one direction in the kiln. The working efficiency of this mechanism is usually low, and if the calcination amount is large, it will affect the calcination efficiency.

[0006] In addition, in the kiln structure of the prior art, when calcining, the material enters from the feed port and goes out directly from the discharge port after one calcination. If the calcination temperature is not high or the calcination quality is poor, the calcination time cannot be increased in the calcination furnace body, and the calcination quality cannot be guaranteed.

[0007] Therefore, in order to solve the above problems, it is necessary to develop a rotary kiln with a reasonable structure and two-way feeding that can improve calcination quality and efficiency. Summary of the invention

[0008] The purpose of the present invention is to provide a rotary kiln with bidirectional feeding in view of the shortcomings of the prior art; the technical scheme is as follows:

[0009] A two-way feeding rotary kiln comprises a left-hand kiln and a right-hand kiln, wherein the left-hand kiln and the right-hand kiln have the same structure, a feeding mechanism is arranged at the middle position of the left-hand kiln and the right-hand kiln, the left-hand kiln and the right-hand kiln are arranged axially symmetrically with the feeding mechanism, and the left-hand kiln and the right-hand kiln are arranged inclined downward toward the middle feeding mechanism;

[0010] The left-hand kiln and the right-hand kiln both include an outer fixed furnace body and a rotating furnace body installed in the fixed furnace body; a driving mechanism is installed on the fixed furnace body, and the rotating furnace body is driven to rotate in the fixed furnace body under the action of the driving mechanism, and a heating mechanism is installed in the area between the fixed furnace body and the rotating furnace body, and the rotating furnace body is heated by the heating mechanism;

[0011] A left-side feed hopper is arranged on the left side of the left-facing kiln, and the left-side feed hopper extends into the left-side end of the rotating furnace body. A right-side feed hopper is arranged on the right side of the right-facing kiln, and the right-side feed hopper extends into the right-side end of the rotating furnace body. Both the left-side feed hopper and the right-side feed hopper can feed materials, and the materials sintered in the kiln are discharged through the middle discharge mechanism.

[0012] Furthermore, a support bearing is installed in the area between the fixed furnace body and the rotating furnace body, and the rotating furnace body is supported in the fixed furnace body by the support bearing.

[0013] Furthermore, the driving mechanism includes a driving motor and a driving gear installed on the driving motor; and a gear ring is installed at the end position of the rotating furnace body, and the gear ring is meshed with the driving gear, and the rotating furnace body is driven to rotate in the fixed furnace body through the drive of the driving motor and the support of the support bearing.

[0014] Furthermore, a material unloading area is left between the left-facing kiln and the right-facing kiln, and the material unloading mechanism is arranged in the material unloading area; the material unloading mechanism is arranged as a circular ring structure as a whole, and the ring structure includes a semicircular fixed ring body on the upper side and a semicircular movable ring body on the lower side, the fixed ring body is embedded and fixed in the upper half of the material unloading area, and the movable ring body is separately arranged in the lower half of the material unloading area.

[0015] Furthermore, the upper end of the fixed ring body is embedded and fixed on the fixed furnace body on the outside, and the lower end of the fixed ring body is separated from the rotating furnace body on the inside; the movable ring body is separated from the fixed furnace body on the outside and the rotating furnace body on the inside at the bottom, so that the movable ring body can move downward, and after leaving the unloading area, the material in the rotating furnace body is unloaded from the unloading area.

[0016] Furthermore, a lifting mechanism is installed at the lower end of the movable ring body, which can drive the movable ring body to move up and down in the material discharge area accordingly.

[0017] Furthermore, the fixed ring body and the movable ring body are both provided with L-shaped docking grooves corresponding to the positions of the inner rotating furnace body, and the docking grooves are separately clamped at the end faces of the rotating furnace body without hindering the rotation of the rotating furnace body.

[0018] Beneficial effects: The present invention has the following beneficial effects:

[0019] 1) The present invention can realize left and right bidirectional feeding, and the materials entering from both sides can be calcined in the rotating furnace body along with the rotating furnace body, and can be unloaded from the middle unloading area, which can effectively increase the calcination efficiency of the kiln, and the structure is reasonably set;

[0020] 2) The present invention reasonably arranges a heating mechanism, a supporting bearing and a driving mechanism, which can support and install the internal rotating furnace body when the outer fixed furnace body is fixed, and the rotating furnace body is driven to rotate by the driving mechanism, while the heating mechanism heats the rotating furnace body accordingly, so as to reasonably calcine the material;

[0021] 3) In the present invention, a feeding mechanism is reasonably arranged in the feeding area, and the feeding work after the material is calcined can be completed more conveniently through the provided feeding mechanism, and the calcination work of the material entering from both sides can be completed, and the structural arrangement is reasonable;

[0022] 4) In the present invention, the material unloading and blocking work are realized by the cooperation of the fixed ring body and the movable ring body, and the lifting mechanism can drive the movement of the movable ring body to realize the unloading, and the structural design is ingenious and easy to use;

[0023] 5) In order to further increase the sealing and stability of this device, docking grooves corresponding to the position of the inner rotating furnace body are set on the fixed ring body and the movable ring body. The docking groove is L-shaped and docks with the end face position of the rotating furnace body, but does not contact it, which can prevent the material in the rotating furnace body from falling from the gap. The structural setting is reasonable. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural diagram of the present invention;

[0025] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0026] Figure 3 for Figure 2 Installation location diagram of the middle lifting mechanism;

[0027] Figure 4 for Figure 3 Position diagram of the middle moving ring after moving downward

[0028] Figure 5 for Figure 3 Middle BB view;

[0029] Figure 6 It is the location diagram of the docking groove in the present invention;

[0030] Among them, there are left-pointing kiln 1; right-pointing kiln 2; unloading mechanism 3; fixed furnace body 4; rotating furnace body 5; heating mechanism 6; left-side feeding hopper 7; right-side feeding hopper 8; supporting bearing 9; driving motor 10; driving gear 11; gear ring 12; unloading area 13; fixed ring body 14; movable ring body 15; lifting mechanism 16; docking groove 17. DETAILED DESCRIPTION

[0031] The present invention is further explained below in conjunction with the accompanying drawings and specific embodiments. The embodiments are implemented based on the technical solution of the present invention. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention.

[0032] like Figure 1 As shown, a two-way feeding rotary kiln comprises a left-hand kiln 1 and a right-hand kiln 2, the left-hand kiln 1 and the right-hand kiln 2 have the same structure, a feeding mechanism 3 is arranged at the middle position of the left-hand kiln 1 and the right-hand kiln 2, the left-hand kiln 1 and the right-hand kiln 2 are arranged axially symmetrically with the feeding mechanism 3, and the left-hand kiln 1 and the right-hand kiln 2 are arranged inclined downward to the middle feeding mechanism 3;

[0033] The left-hand kiln 1 and the right-hand kiln 2 both include an outer fixed furnace body 4 and a rotating furnace body 5 installed in the fixed furnace body 4; a driving mechanism is installed on the fixed furnace body 4, and the rotating furnace body 5 is driven to rotate in the fixed furnace body 4 under the action of the driving mechanism, and a heating mechanism 6 is installed in the area between the fixed furnace body 4 and the rotating furnace body 5, and the heating mechanism 6 heats the inside of the rotating furnace body 5;

[0034] A left-side feed hopper 7 is arranged on the left side of the left-pointing kiln 1, and the left-side feed hopper 7 extends into the left-side end of the rotating furnace body 5. A right-side feed hopper 8 is arranged on the right side of the right-pointing kiln 2, and the right-side feed hopper 8 extends into the right-side end of the rotating furnace body 5. Both the left-side feed hopper 7 and the right-side feed hopper 8 can feed materials, and the materials sintered in the kiln are discharged through the middle discharge mechanism 3.

[0035] A support bearing 9 is further installed in the region between the fixed furnace body 4 and the rotating furnace body 5 , and the rotating furnace body 5 is supported in the fixed furnace body 4 by the support bearing 9 .

[0036] The driving mechanism includes a driving motor 10 and a driving gear 11 installed on the driving motor 10; a ring gear 12 is installed at the end position of the rotating furnace body 5, and the ring gear 12 is meshed with the driving gear 11. The rotating furnace body 5 is driven to rotate in the fixed furnace body 4 by the drive of the driving motor 10 and the support of the support bearing 9.

[0037] like Figure 2 As shown, a material unloading area 13 is left between the left kiln 1 and the right kiln 2, and a material unloading mechanism 3 is arranged in the material unloading area 13; the material unloading mechanism 3 is arranged as a circular ring structure as a whole, and the ring structure includes a semicircular fixed ring body 14 on the upper side and a semicircular movable ring body 15 on the lower side, the fixed ring body 14 is embedded and fixed at the upper half of the material unloading area 13, and the movable ring body 15 is separately arranged at the lower half of the material unloading area 13.

[0038] like Figure 5 As shown, the upper end of the fixed ring body 14 is embedded and fixed on the outer fixed furnace body 4, and the lower end of the fixed ring body 14 is separated from the inner rotating furnace body 5; the movable ring body 15 is separated from the outer fixed furnace body 4 and the inner rotating furnace body 5 at the bottom, so that the movable ring body 15 can move downward, and after leaving the unloading area 13, the material in the rotating furnace body 5 is unloaded from the unloading area 13.

[0039] like Figure 3 and Figure 4 As shown, a lifting mechanism 16 is installed at the lower end of the movable ring body 15, which can drive the movable ring body 15 to move up and down in the unloading area 13 accordingly.

[0040] like Figure 6 As shown, both the fixed ring body 14 and the movable ring body 15 are provided with L-shaped docking grooves 17 corresponding to the position of the inner rotating furnace body 5 , and the docking grooves 17 are separately clamped at the end surface of the rotating furnace body 5 without hindering the rotation of the rotating furnace body 5 .

[0041] The specific working process and working principle of this device are as follows: When this device is working, materials can be put into the left and right feed hoppers on both sides, and then enter the middle unloading area after calcining in the left kiln and the right kiln respectively, and unload from the position of the unloading area. Since calcination is carried out on both sides at the same time, the calcination efficiency can be effectively improved. When there are more calcined materials, the calcination efficiency can be effectively improved.

[0042] The device is reasonably equipped with a heating mechanism, a supporting bearing and a driving mechanism, which can support and install the internal rotating furnace body when the outer fixed furnace body is fixed, and drive the rotating furnace body to rotate through the driving mechanism, while the heating mechanism heats the rotating furnace body accordingly to reasonably calcine the material.

[0043] The most important part of this device is how to unload the rotating furnace bodies on both sides. Since the rotating furnace bodies on both sides unload the materials through the unloading area in the middle, it is necessary to ensure that the unloading and the unloading area are blocked when the rotating furnace body rotates.

[0044] In this device, a feeding area is set at the middle position of the left kiln and the right kiln. The feeding mechanism is set in the feeding area, and is specifically set to an annular ring structure, and is divided into an upper fixed ring body and a lower movable ring body. The fixed ring body is fixedly installed on the end face of the fixed furnace body at the upper position, so that the position of the fixed ring body is fixed, but the lower end of the fixed ring body needs to be separated from the inner rotating furnace body, so the rotating furnace body needs to rotate all the time, so there is a distance between the two.

[0045] Correspondingly, the movable ring body on the lower side needs to be separated from the rotating furnace body and the fixed furnace body. Therefore, the movable ring body needs to move up and down to realize the unloading of materials. The two side ends of the movable ring body are separated and are correspondingly installed with lifting mechanisms. When the movable ring body moves downward and exits the unloading area under the action of the lifting mechanism, the material can be unloaded from the unloading area. When the movable ring body is located in the unloading area, it blocks the area accordingly, and the material will not be unloaded, which can increase the calcination time of the material in the calcining furnace and increase the calcination quality.

[0046] In order to further increase the sealing and stability in this device, docking grooves corresponding to the position of the inner rotating furnace body are provided on the fixed ring body and the movable ring body. The docking grooves are L-shaped and dock with the end surface of the rotating furnace body but do not contact it, which can prevent the material in the rotating furnace body from falling through the gap. The structural setting is reasonable.

[0047] The above specific implementation is only a preferred embodiment of the present invention and is not intended to limit the implementation of the present invention and the scope of the claims. All equivalent changes and modifications made according to the content of the patent protection scope of the present invention should be included in the scope of the patent application of the present invention.

Claims

1. A two-way feeding rotary kiln, characterized in that: The invention comprises a left-facing kiln (1) and a right-facing kiln (2), wherein the left-facing kiln (1) and the right-facing kiln (2) have the same structure, a material discharge mechanism (3) is arranged at the middle position of the left-facing kiln (1) and the right-facing kiln (2), the left-facing kiln (1) and the right-facing kiln (2) are arranged axially symmetrically with respect to the material discharge mechanism (3), and the left-facing kiln (1) and the right-facing kiln (2) are arranged to be inclined downward toward the middle material discharge mechanism (3); The left-hand kiln (1) and the right-hand kiln (2) both comprise an outer fixed furnace body (4) and a rotating furnace body (5) installed in the fixed furnace body (4); a driving mechanism is installed on the fixed furnace body (4), and the rotating furnace body (5) is driven to rotate in the fixed furnace body (4) under the action of the driving mechanism, and a heating mechanism (6) is installed in the area between the fixed furnace body (4) and the rotating furnace body (5), and the heating mechanism (6) heats the inside of the rotating furnace body (5); A left-side feed hopper (7) is provided on the left side of the left-facing kiln (1), and the left-side feed hopper (7) extends into the left-side end of the rotating furnace body (5). A right-side feed hopper (8) is provided on the right side of the right-facing kiln (2), and the right-side feed hopper (8) extends into the right-side end of the rotating furnace body (5). Both the left-side feed hopper (7) and the right-side feed hopper (8) can feed materials, and the materials sintered in the kiln are discharged through the middle discharge mechanism (3).

2. A two-way feeding rotary kiln according to claim 1, characterized in that: A support bearing (9) is also installed in the area between the fixed furnace body (4) and the rotating furnace body (5), and the rotating furnace body (5) is supported in the fixed furnace body (4) by the support bearing (9).

3. A two-way feeding rotary kiln according to claim 2, characterized in that: The driving mechanism comprises a driving motor (10) and a driving gear (11) mounted on the driving motor (10); a gear ring (12) is mounted at the end of the rotating furnace body (5), and the gear ring (12) is meshed with the driving gear (11), and the rotating furnace body (5) is driven to rotate in the fixed furnace body (4) by the driving motor (10) and the support of the support bearing (9).

4. The rotary kiln with bidirectional feeding according to claim 1, characterized in that: A material unloading area (13) is reserved between the left-facing kiln (1) and the right-facing kiln (2), and the material unloading mechanism (3) is arranged in the material unloading area (13); the material unloading mechanism (3) is arranged as a circular ring structure as a whole, and the ring structure comprises a semicircular fixed ring body (14) on the upper side and a semicircular movable ring body (15) on the lower side, the fixed ring body (14) is embedded and fixed at the upper half of the material unloading area (13), and the movable ring body (15) is separately arranged at the lower half of the material unloading area (13).

5. The rotary kiln with bidirectional feeding according to claim 4, characterized in that: The upper end of the fixed ring body (14) is embedded and fixed on the fixed furnace body (4) on the outside, and the lower end of the fixed ring body (14) is separated from the rotating furnace body (5) on the inside; the movable ring body (15) is separated from the fixed furnace body (4) on the outside and the rotating furnace body (5) on the inside at the bottom, so that the movable ring body (15) can move downward, and after leaving the unloading area (13), the material in the rotating furnace body (5) can be unloaded from the unloading area (13).

6. The rotary kiln with bidirectional feeding according to claim 5, characterized in that: The lower end of the movable ring body (15) is provided with a lifting mechanism (16), which can drive the movable ring body (15) to move up and down in the material unloading area (13).

7. The two-way feeding rotary kiln according to claim 5, characterized in that: The fixed ring body (14) and the movable ring body (15) are both provided with an L-shaped docking groove (17) corresponding to the position of the inner rotating furnace body (5); the docking groove (17) is separately clamped at the end surface of the rotating furnace body (5) and does not hinder the rotation of the rotating furnace body (5).

Images