Conversion section structure of roller kiln

Abstract

The utility model belongs to the field of roller kilns, and particularly relates to a conversion section structure of a roller kiln, which comprises a first conveying section and a second conveying section which are communicated with each other, the first conveying section comprises a first conveying bin, a supporting plate and a pushing / pulling mechanism, the supporting plate is arranged in the first conveying bin, and the pushing / pulling mechanism is used for pushing materials on the supporting plate to the second conveying section; the second conveying section comprises a second conveying bin and a conveying roller assembly, the conveying roller assembly comprises N1 conveying rollers and a driving assembly for driving the N1 conveying rollers to rotate, the N2 conveying rollers close to one side of the first conveying bin are connected with the driving assembly through a one-way clutch mechanism, and the rotating direction of the conveying rollers is opposite to the limiting direction of the one-way clutch mechanism. The speed difference of materials on the supporting plate and the conveying roller assembly is solved through the one-way clutch mechanism on the N conveying rollers close to one side of the first conveying bin, and the conveying reliability is guaranteed on the basis that the conveying efficiency is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the field of roller kilns, and in particular relates to a conversion section structure of a roller kiln. Background Art

[0002] The track kiln is a device that uses the rotation of rotating rollers to transport products for continuous production. Since it does not use a kiln car, compared with the traditional tunnel kiln, it reduces the heat loss caused by the kiln car taking away part of the heat, and improves the thermal efficiency. Moreover, since the rotating rollers can release heat both up and down, the temperature in the kiln is uniform, shortening the sintering cycle of the product.

[0003] The basic working principle of the roller kiln is: use a motor to drive multiple rows of rollers to rotate, and continuously send the powder material in the graphite sagger into the closed furnace body that is tens of meters long, and then take it out of the furnace after high-temperature sintering at about 800-1000℃.

[0004] At present, conventional track kilns have the following problems in the production process: 1. The material transition between different areas in the track kiln mostly uses turning rollers to change the material conveying direction. The high temperature inside the kiln makes the electrical parts related to the transmission mechanism easy to be damaged; 2. The rotating roller runs slowly and the conveying time is long. Therefore, it is easy for external gas to mix into the kiln in some processes, resulting in problems such as impure material sintering atmosphere; 3. The furnace of the track kiln is divided into a heating zone, a high-temperature zone, a natural cooling zone and a water-cooling zone from front to back. These zones are arranged in a straight line. The heat from the high-temperature zone naturally diffuses to the cooling zone, which will cause a lot of heat loss, high energy consumption and low thermal efficiency.

[0005] Therefore, it is urgent to develop a conversion section structure of a roller kiln to achieve effective connection between the high-temperature zone and the heating zone / cooling zone, improve the material transfer efficiency between various processes, and reduce heat loss from the high-temperature zone to other process sections. Utility Model Content

[0006] The technical problem to be solved by the utility model is to provide a conversion section structure of a roller kiln which can ensure the conveying efficiency and conveying stability.

[0007] The utility model provides a conversion section structure of a roller kiln, comprising a first conveying section and a second conveying section connected to each other;

[0008] The first conveying section includes a first conveying bin, a support plate and a push / pull mechanism, the support plate is arranged in the first conveying bin, and the push / pull mechanism is used to push the material on the support plate to the second conveying section, or pull the material in the second conveying section into the support plate;

[0009] The second conveying section includes a second conveying bin and a conveying roller assembly, and the conveying roller assembly includes N 1 Conveyor rollers and drives N 1The driving assembly for rotating the conveying rollers is N near the first conveying bin. 2 The conveying rollers are connected to the driving assembly through a one-way clutch mechanism. The rotation direction of the conveying rollers is opposite to the limiting direction of the one-way clutch mechanism. 1 ≥N 2 .

[0010] Furthermore, N 2 The head-to-tail spacing of the conveyor rollers is greater than or equal to the size of the material.

[0011] Furthermore, the conveying speed of the push / pull mechanism is faster than the conveying speed of the conveying roller assembly.

[0012] Furthermore, the one-way clutch mechanism is a one-way bearing, a ratchet or an overrunning clutch.

[0013] Furthermore, the drive assembly includes a drive shaft and N 1 Root drive driven shaft;

[0014] N 1 One end of the driven shaft and N 1 The conveying rollers are connected one by one, and the other ends are meshed and connected with the driving shaft;

[0015] Drive shaft and N 1 The driving and driven shafts are perpendicular, and N 1 The driven shaft is driven by helical gears, bevel gears or synchronous belts.

[0016] Furthermore, a universal joint is arranged between the driving and driven shafts and the conveying roller.

[0017] Furthermore, the driving assembly is arranged on the outer side of the second conveying bin, and one end of the conveying roller is arranged to penetrate the side wall of the second conveying bin.

[0018] Furthermore, the feeding directions of the first conveying section and the second conveying section are perpendicular to each other.

[0019] Furthermore, the push / pull mechanism includes a linear drive member and a push / pull rod, the linear drive member is disposed outside the first conveying bin inside the push / pull rod, and the output end of the linear drive member penetrates the side wall of the first conveying bin and is connected to the push / pull rod;

[0020] The conveying direction of the linear drive is parallel to the conveying direction of the second conveying section.

[0021] Furthermore, the support plate is a graphite plate.

[0022] The beneficial effects of the utility model are:

[0023] 1. The structure has wide applicability, and can be used for material transition in low temperature section as well as material transition in high temperature section.

[0024] 2. The overall structure is simple and the probability of failure is low.

[0025] 3. All driving mechanisms are arranged outside the conveying bin, so that they can be away from the harsh environment inside the bin and have a long service life.

[0026] 4. The speed difference between the material on the support plate and the conveying roller assembly adopts N on the side close to the first conveying bin. 2 The root conveying roller is solved by a one-way clutch mechanism, which ensures the conveying reliability on the basis of ensuring the conveying efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Attached Figure 1 This is a schematic diagram of the structure of the utility model when the material is on the support plate;

[0028] Attached Figure 2 It is a front cross-sectional view of the material of the utility model when it is on the support plate;

[0029] Attached Figure 3 This is a schematic diagram of the structure of the utility model when the material is on the conveying roller;

[0030] Attached Figure 4 For attachment Figure 3 A partial enlarged view of the middle A;

[0031] Attached Figure 5 This is a front cross-sectional view of the utility model when the material is on the conveying roller;

[0032] Attached Figure 6 It is a front view of the utility model;

[0033] Attached Figure 7 For attachment Figure 6 Middle BB section view;

[0034] Attached Figure 8 For attachment Figure 6 Middle CC section view.

[0035] In the figure, 1-first conveying section; 11-first conveying bin; 12-support plate; 13-push / pull mechanism; 131-linear driving member; 132-push / pull rod; 2-second conveying section; 21-second conveying bin; 22-conveying roller assembly; 221-conveying roller; 222-driving assembly; 2221-driving active shaft; 2222-driving driven shaft; 2223-universal joint; 223-one-way clutch mechanism. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments 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.

[0037] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0038] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, a physical connection, or a wireless communication connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0040] As attached Figure 1 -Attached Figure 8 As shown, the utility model provides a conversion section structure of a roller kiln, comprising a first conveying section 1 and a second conveying section 2 which are interconnected, wherein the first conveying section 1 and the second conveying section 2 are used to transfer materials from one process of the track kiln to another process of the track kiln, for example, transferring materials from a high temperature section furnace body of the track kiln to a cooling section furnace body, wherein the material conveying directions of the two stations can be in a straight line, or can be perpendicular to each other and form a 90° turning structure, preferably a turning structure, so as to reduce energy loss;

[0041] The first conveying section 1 includes a first conveying bin 11, a support plate 12 and a push / pull mechanism 13. The support plate 12 is arranged in the first conveying bin 11. The support plate 12 is used to carry and move the material 3. The push / pull mechanism 13 is used to push the material 3 on the support plate 12 to the second conveying section 2. At this time, the material 3 is conveyed from the first conveying bin 11 to the second conveying bin 2, or the push / pull mechanism 13 is used to pull the material 3 of the second conveying section 2 into the support plate 12. At this time, the material 3 is conveyed from the second conveying bin 2 to the first conveying bin 11. It should be noted that the push / pull mechanism 13 is a pushing mechanism or a pulling mechanism, that is, the material 3 is conveyed from the first conveying bin 11 to the second conveying bin 2 in this way and the material 3 is conveyed from the second conveying bin 2 to the first conveying bin 11 in this way.

[0042] The second conveying section 2 includes a second conveying bin 21 and a conveying roller assembly 22. The conveying roller assembly 22 includes N 1 The conveying roller 221 and the driving N 1 The driving assembly 222 for rotating the conveying roller 221, N 1 The N conveying rollers 221 are used to drive the material 3 to move, and the N conveying rollers 221 near the first conveying bin 11 are used to drive the material 3 to move. 2 The conveying roller 221 is connected to the driving assembly 222 through a one-way clutch mechanism 223. The rotation direction of the conveying roller 221 is opposite to the limiting direction of the one-way clutch mechanism 223. 1 ≥N 2 .

[0043] When the material 3 is conveyed from the first conveying bin 11 to the second conveying bin 2, the conveying roller 221 conveys the material 3 to move away from one end of the support plate 12. When the material 3 is conveyed from the second conveying bin 2 to the first conveying bin 11, the conveying roller 221 conveys the material 3 to move toward one end of the support plate 12.

[0044] When the material 3 is conveyed from the first conveying bin 11 to the second conveying bin 2, and the conveying speed of the push / pull mechanism 13 is faster than the conveying speed of the conveying roller assembly 22, when the material 3 contacts the conveying roller 221 equipped with the one-way clutch mechanism 223, the one-way clutch mechanism 223 idles, and the corresponding conveying roller 221 rotates faster than the other conveying rollers 221, until all the material 3 reaches the conveying roller 221 equipped with the one-way clutch mechanism 223, the rotation speed of the conveying roller 221 equipped with the one-way clutch mechanism 223 will be consistent with the rotation speed of other conveying rollers 221, achieving a stable conveying state.

[0045] When the material 3 is conveyed from the second conveying bin 2 to the first conveying bin 11, the material 3 will smoothly enter the conveying roller 221 equipped with the one-way clutch mechanism 223, and then the push / pull mechanism 13 will pull the material 3 on the conveying roller 221 onto the support plate 12, and the pulling speed of the push / pull mechanism 13 is faster than the conveying speed of the conveying roller 221. At this time, in the process of the push / pull mechanism 13 pulling the material 3, the conveying roller 221 equipped with the one-way clutch mechanism 223 will idle until the material 3 enters the support plate 12. The material 3 always has rolling friction with the conveying roller 221 without sliding friction, thereby improving the stability and reliability of the use of the conveying roller 221.

[0046] The conversion section structure of the roller kiln provided by the utility model can convert materials at two stations of the track kiln. The first conveying bin 11 can be upstream or downstream, and because the first conveying bin 11 is equipped with a push / pull mechanism 13 and a support plate 12 for material conveying, and is combined with a conveying roller 221 with a one-way clutch mechanism 223, it can improve the conveying speed of the material 3 and ensure that the material 3 will not be affected by inertia during the conveying process, thereby solving the problems of the track kiln conveying method in the prior art using a rolling conveying scheme resulting in a long conveying time and external gas easily mixed into the furnace body. The present scheme improves the conveying stability on the basis of ensuring the conveying efficiency; the second conveying bin 21 is equipped with a conveying roller assembly 22 for material conveying, which can ensure the conveying efficiency, and the N conveying roller assembly 22 on the side close to the first conveying bin 11 can ensure the conveying efficiency. 2 The design of connecting the conveying roller 221 to the driving assembly 222 via a one-way clutch mechanism 223 can make the conveying speed of the push / pull mechanism 13 faster than the conveying speed of the conveying roller assembly 22, thereby compensating for the conveying time consumed by the conversion of the upper material 3, thereby achieving efficient conveying of the material 3, meeting the requirements of a smooth transition, and not affecting the conveying speed of the rear material 3 during the entire transition process.

[0047] The utility model has the following beneficial effects:

[0048] 1. The structure has wide applicability, and can be used for the transition of material 3 in the low temperature section, and can also be used for the transition of material 3 in the high temperature section.

[0049] 2. The overall structure is simple and the probability of failure is low.

[0050] 3. All driving mechanisms are arranged outside the conveying bin, so that they can be away from the harsh environment (such as high temperature) inside the bin and have a long service life.

[0051] 4. The speed difference between the material 3 on the support plate 12 and on the conveying roller assembly 22 is N on the side close to the first conveying bin 11. 2 The root conveying roller 221 is solved by a one-way clutch mechanism 223, which ensures the conveying reliability on the basis of ensuring the conveying efficiency.

[0052] In one embodiment, N 2 The head-to-tail spacing of the conveying rollers 221 is greater than or equal to the size of the material 3, so that the material 3 can completely enter the N-type one-way clutch mechanism 223 equipped with the material 3. 2 The material 3 is then transported to the conveying roller 221 not equipped with the one-way clutch mechanism 223, so as to avoid wear between the material 3 and the conveying roller 221 not equipped with the one-way clutch mechanism 223 due to the speed difference. 2 ≥2, that is, at least two conveying rollers 221 with one-way clutch mechanisms 223 are provided.

[0053] In one embodiment, the conveying speed of the push / pull mechanism 13 is faster than the conveying speed of the conveying roller assembly 22 to improve the conversion efficiency of the material 3.

[0054] In one embodiment, the one-way clutch mechanism 223 is a one-way bearing, a ratchet or an overrunning clutch, which can be selected according to actual needs.

[0055] In one embodiment, the driving assembly 222 includes a driving shaft 2221 and a N 1 Root driving and driven shaft 2222; N 1 One end of the driven shaft 2222 is connected to N 1 The conveying rollers 221 are connected one by one, and the other ends are meshed and connected with the driving shaft 2221; the driving shaft 2221 is meshed with N 1 The root driving and driven shaft 2222 is vertical, and N 1 The driven shaft 2222 is driven by a helical gear, a bevel gear or a synchronous belt. In this embodiment, one driving shaft 2221 (one driving motor) can drive all the conveying rollers 221 to rotate synchronously, thereby reducing the number of power devices of the driving assembly 222, reducing costs, and ensuring that the rotation speeds of all the conveying rollers 221 are synchronized.

[0056] In one embodiment, a universal joint 2223 is further provided between the driving driven shaft 2222 and the conveying roller 221 , so that a small angle can exist between the conveying roller 221 and the driving driven shaft 2222 , thereby ensuring the rotation stability of the conveying roller 221 .

[0057] In one embodiment, the driving component 222 is arranged on the outside of the second conveying bin 21, and one end of the conveying roller 221 is arranged to pass through the side wall of the second conveying bin 21, thereby preventing the driving component 222 from being away from the harsh environment (such as high temperature) in the second conveying bin 21, thereby improving the service life of the driving component 222.

[0058] In one of the embodiments, the feeding directions of the first conveying section 1 and the second conveying section 2 are perpendicular to each other. At present, the furnace of a general roller kiln is divided into a heating zone, a high temperature zone, a natural cooling zone and a water cooling zone from front to back. These zones are arranged in a straight line. The heat from the high temperature zone diffuses naturally to the cooling zone, which will cause a lot of heat loss, high energy consumption and low thermal efficiency. In this embodiment, the conversion section structure of the roller kiln has a first conveying section 1 and a second conveying section 2 with mutually perpendicular feeding directions, which can be used to connect the high temperature zone and the natural cooling zone. For example, the second conveying section 2 is the high temperature zone, and the feeding position of the first conveying section 1 is the natural cooling zone. When the high temperature flows to the first conveying section 1 in the second conveying section 2, its straight direction will be blocked and it can only flow at the side feed port position. At this time, the high temperature transmission path is no longer a straight line, but needs to make a 90° turn, thereby reducing the transmission efficiency of the high temperature and reducing the heat loss in the high temperature zone. In addition, the feeding directions of the first conveying section 1 and the second conveying section 2 are perpendicular to each other, so that the feeding device of the first conveying section 1 can be perpendicular to the conveying direction of the second conveying section 2. In a specific embodiment, a material inlet and outlet are provided on the side of the first conveying section 1 (the side perpendicular to the working direction of the push / pull mechanism 13), so that the entire roller kiln is no longer arranged in a straight line, but is arranged at a right angle, which is convenient for rational use of factory space.

[0059] In one embodiment, the push / pull mechanism 13 includes a linear drive member 131 and a push / pull rod 132, the push / pull rod 132 is arranged in the first conveying bin 11, the linear drive member 131 is arranged outside the first conveying bin 11, and the output end of the linear drive member 131 passes through the side wall of the first conveying bin 11 and is connected to the push / pull rod 132, wherein the output end of the linear drive member 131 is preferably in sliding and sealing cooperation with the side wall of the first conveying bin 11, and in addition, the linear drive member 131 can be a component such as a cylinder, an oil cylinder, an electric cylinder or a linear module;

[0060] The conveying direction of the linear drive 131 is parallel to the conveying direction of the second conveying section 2, wherein the push / pull rod 132 is used to push the material 3 or pull the material 3 to move. When pushing the material 3 to move, the end of the push / pull rod 132 abuts against the material 3 to push it. When pulling the material 3 to move, the end of the push / pull rod 132 is detachably connected to the material 3, and after the connection, the material 3 can be pulled to move.

[0061] In one embodiment, the support plate 12 is a graphite plate, which has the advantages of high temperature resistance, small deformation and wear resistance.

[0062] The above is only an embodiment and does not limit the present invention in any way. Any person skilled in the art can make many possible changes, modifications or modifications to the present invention without departing from the scope of the present invention by using the above disclosed technical contents. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the present invention should fall within the scope of protection of the present invention.

Claims

1. A conversion section structure of a roller kiln, characterized in that: It comprises a first conveying section (1) and a second conveying section (2) which are connected to each other; The first conveying section (1) comprises a first conveying bin (11), a support plate (12) and a push / pull mechanism (13); the support plate (12) is arranged in the first conveying bin (11); the push / pull mechanism (13) is used to push the material (3) on the support plate (12) to the second conveying section (2), or to pull the material (3) on the second conveying section (2) into the support plate (12); The second conveying section (2) comprises a second conveying bin (21) and a conveying roller assembly (22); the conveying roller assembly (22) comprises N1 conveying rollers (221) and a driving assembly (222) for driving the N1 conveying rollers (221) to rotate; the N2 conveying rollers (221) close to the first conveying bin (11) are connected to the driving assembly (222) via a one-way clutch mechanism (223); the rotation direction of the conveying rollers (221) is opposite to the limiting direction of the one-way clutch mechanism (223), wherein N1≥N2.

2. The conversion section structure of the roller kiln according to claim 1, characterized in that: The head-to-tail spacing of the N2 conveying rollers (221) is greater than or equal to the size of the material (3).

3. The conversion section structure of the roller kiln according to claim 1, characterized in that: The conveying speed of the push / pull mechanism (13) is faster than the conveying speed of the conveying roller assembly (22).

4. The conversion section structure of the roller kiln according to claim 1, characterized in that: The one-way clutch mechanism (223) is a one-way bearing, a ratchet or an overrunning clutch.

5. The conversion section structure of the roller kiln according to any one of claims 1 to 4, characterized in that: The driving assembly (222) comprises a driving active shaft (2221) and N1 driving driven shafts (2222); One end of N1 driven shafts (2222) is connected to N1 conveying rollers (221) in a one-to-one correspondence, and the other end is meshingly connected to the driving shaft (2221); The driving active shaft (2221) is perpendicular to the N1 driving driven shafts (2222), and the N1 driving driven shafts (2222) are driven by helical gears, bevel gears or synchronous belts.

6. The conversion section structure of the roller kiln according to claim 5, characterized in that: A universal joint (2223) is also provided between the driving driven shaft (2222) and the conveying roller (221).

7. The conversion section structure of the roller kiln according to claim 5, characterized in that: The driving assembly (222) is arranged outside the second conveying bin (21), and one end of the conveying roller (221) is arranged to penetrate the side wall of the second conveying bin (21).

8. The conversion section structure of a roller kiln according to any one of claims 1 to 4, 6 and 7, characterized in that: The feeding directions of the first conveying section (1) and the second conveying section (2) are perpendicular to each other.

9. The conversion section structure of the roller kiln according to claim 8, characterized in that: The push / pull mechanism (13) comprises a linear drive member (131) and a push / pull rod (132), wherein the push / pull rod (132) is arranged in the first conveying bin (11), and the linear drive member (131) is arranged outside the first conveying bin (11), and an output end of the linear drive member (131) passes through a side wall of the first conveying bin (11) and is connected to the push / pull rod (132); The conveying direction of the linear drive member (131) is parallel to the conveying direction of the second conveying section (2).

10. The conversion section structure of the roller kiln according to claim 8, characterized in that: The support plate (12) is a graphite plate.

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