Anti-wall-sticking self-scraping device for rotary kiln
By designing an anti-scraping self-scraping device in the rotary kiln, and automatically cleaning the inner wall powder with rolling rings and scraping parts, the problems of heat transfer efficiency and energy consumption caused by the sticking wall of the powder are solved, and the temperature in the kiln is achieved and the improvement of powder calcination effect.
Patent Information
- Application Number
- CN202421202443.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-29
- Publication Date
- 2025-02-07
- Estimated Expiration
- 2034-05-29
AI Technical Summary
In the external heat rotary kiln, material sticking walls are prone to occur during the calcination of powdered materials, resulting in a decrease in the heat transfer efficiency of the outer cylinder wall, the temperature in the kiln is too low, the energy consumption increases, and it is difficult to meet the calcining temperature required by the material.
Design a rotary kiln anti-sticking wall self-scraping device, including a rotary kiln body and a scraping mechanism arranged in the kiln. The scraping mechanism is composed of a rolling ring, a scraping member and an axial limiting assembly. The rolling ring is rotatable and Moving in the radial direction, the scraper member is connected to the side of the roll ring for scraping the powder from the inner wall, and the axial limiting assembly restricts the roll ring to move in the axial direction.
By automatically cleaning the powder on the inner wall of the rotary kiln, we can avoid the temperature reduction and energy consumption problems caused by powder adhesion, ensure the stability of the temperature in the kiln and improve the calcination effect of the powder.
Smart Images
Figure CN222438569U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of rotary kilns, in particular to a rotary kiln wall-adhesion prevention and self-scraping device. Background Art
[0002] At present, during the calcination process of powdered materials in externally heated rotary kilns, materials are prone to sticking to the wall, which causes the heat transfer efficiency of the outer tube wall to decrease, and leads to low temperature in the kiln, increased energy consumption, and failure to reach the required calcination temperature of the materials. Utility Model Content
[0003] The utility model aims to provide a rotary kiln wall-adhering self-scraping device to automatically clean the powder adhered to the inner wall of the rotary kiln.
[0004] In order to solve the above technical problems, the utility model provides the following technical solutions:
[0005] A rotary kiln wall-preventing self-scraping device comprises a rotary kiln body and a scraping mechanism arranged in the rotary kiln body, the inner wall of the rotary kiln body is axially provided with a plurality of lifting plates, the scraping mechanism comprises a rolling ring, a scraping piece and an axial limiting assembly, the rolling ring is arranged on the inner wall of the rotary kiln body, the rolling ring can rotate relative to the rotary kiln body, and the rolling ring can move radially relative to the rotary kiln body, the scraping piece is connected to the axial side of the rolling ring to scrape off the powder on the inner wall of the rotary kiln body, and the axial limiting assembly is used to limit the axial movement of the rolling ring.
[0006] Preferably, the axial limiting assembly comprises a first retaining ring and a second retaining ring, the first retaining ring and the second retaining ring are axially spaced apart on the inner wall of the rotary kiln body, the rolling ring is located between the first retaining ring and the second retaining ring, and the distance between the two sides of the rolling ring in the axial direction is smaller than the distance between the two opposite sides of the first retaining ring and the second retaining ring.
[0007] Preferably, the first baffle ring and the second baffle ring are both provided with a material passing hole in the axial direction for powder to pass through.
[0008] Preferably, the first baffle ring and the second baffle ring are welded to the inner wall of the rotary kiln body.
[0009] Preferably, the rolling ring includes a rolling ring body and a roller, a plurality of the rollers are provided, the plurality of rollers are spaced apart on the outer circumference of the rolling ring body, and the rollers are rotatable relative to the rolling ring body.
[0010] Preferably, a plurality of grooves are spaced apart on the outer circumference of the roller ring body, and the plurality of rollers are respectively arranged in the plurality of grooves in a one-to-one correspondence, and the rollers partially extend out of the grooves to allow the rollers to roll on the inner wall of the rotary kiln body.
[0011] Preferably, two ends of the roller in the axial direction are correspondingly close to the first retaining ring and the second retaining ring.
[0012] Preferably, the scraper members are provided on both sides of the rolling ring in the axial direction.
[0013] Preferably, a plurality of scraping members are provided on the rolling ring at intervals along the circumferential direction.
[0014] Preferably, the scraper comprises a connecting rod and a scraper, one end of the connecting rod is fixed to the side of the rolling ring, and the other end of the connecting rod is connected to the scraper, and the scraper is used to scrape powder off the inner wall of the rotary kiln body.
[0015] Compared with the prior art, the rotary kiln wall-adhesion prevention self-scraping device of the utility model has the following beneficial effects:
[0016] In the present invention, during the rotation of the rotary kiln body, the powder is continuously thrown forward along with the lifting plate. Since the rolling ring can rotate relative to the rotary kiln body and the rolling ring can move radially relative to the rotary kiln body, and under the limitation of the axial limiting assembly, the powder can enter under the rolling ring, so that the rolling ring is padded to a certain height in the radial direction, so that the scraping member can be pressed against the inner wall of the rotary kiln body. As the rotary kiln body rotates, the powder on the inner wall of the rotary kiln body can be scraped off. Finally, after the powder between the bottom of the rolling ring and the rotary kiln body is gradually reduced, the rolling ring can return to its original position by self-return. Therefore, the present application can automatically clean the powder on the inner wall of the rotary kiln body, thereby preventing the adhered powder from affecting the temperature inside the rotary kiln body, and thus not affecting the calcination of the powder. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a stereogram of an embodiment of the utility model;
[0018] Figure 2 It is a three-dimensional diagram of the scraping mechanism of the embodiment of the utility model;
[0019] Figure 3 It is a schematic diagram of a rolling ring and a scraper member according to an embodiment of the utility model.
[0020] In the figure, 1, rotary kiln body; 11, lifting plate; 2, scraping mechanism; 21, rolling ring; 211, rolling ring body; 212, roller; 213, groove; 22, scraping member; 221, connecting rod; 222, scraper; 23, axial limit assembly; 231, first retaining ring; 232, second retaining ring; 233, feeding hole. DETAILED DESCRIPTION
[0021] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
[0022] In the description of the present utility model, it should be understood that the wording "comprising" used in the present utility model specification refers to the presence of the features, integers, steps, operations, parts / components and / or assemblies, but does not exclude the presence or addition of one or more other features, integers, steps, operations, parts / components, assemblies and / or their groups. It should be understood that when we say that a part / component is "connected" to another part / component, it can be directly connected to the other part / component, or there can be intermediate parts / components. The wording "and / or" used here includes all or any unit and all combinations of one or more associated listed items.
[0023] like Figures 1 to 3 As shown, the utility model relates to a rotary kiln anti-sticking wall self-scraping device, comprising a rotary kiln body 1 and a scraping mechanism 2 arranged in the rotary kiln body 1, the inner wall of the rotary kiln body 1 is axially provided with a plurality of lifting plates 11, the scraping mechanism 2 comprises a rolling ring 21, a scraping piece 22 and an axial limiting assembly 23, the rolling ring 21 is arranged on the inner wall of the rotary kiln body 1, the rolling ring 21 can rotate relative to the rotary kiln body 1, and the rolling ring 21 can move radially relative to the rotary kiln body 1, the scraping piece 22 is connected to the axial side of the rolling ring 21 to scrape off the powder on the inner wall of the rotary kiln body 1, and the axial limiting assembly 23 is used to limit the axial movement of the rolling ring 21.
[0024] In the present invention, during the rotation of the rotary kiln body 1, the powder is continuously thrown forward along with the lifting plate 11. Since the rolling ring 21 can rotate relative to the rotary kiln body 1, and the rolling ring 21 can move radially relative to the rotary kiln body 1, and under the limitation of the axial limiting component 23, the powder can enter the bottom of the rolling ring 21, so that the rolling ring 21 is padded to a certain height in the radial direction, so that the scraping member 22 can be pressed against the inner wall of the rotary kiln body 1. As the rotary kiln body 1 rotates, the powder on the inner wall of the rotary kiln body 1 can be scraped off. Finally, after the powder between the bottom of the rolling ring 21 and the rotary kiln body 1 is gradually reduced, the rolling ring 21 can return to its original position by self-return. Therefore, the present application can automatically clean the powder on the inner wall of the rotary kiln body 1, thereby preventing the adhered powder from affecting the temperature inside the rotary kiln body 1, and thus not affecting the calcination of the powder.
[0025] In this embodiment, the axial limiting assembly 23 includes a first retaining ring 231 and a second retaining ring 232, and the first retaining ring 231 and the second retaining ring 232 are axially spaced apart on the inner wall of the rotary kiln body 1, and the rolling ring 21 is located between the first retaining ring 231 and the second retaining ring 232, and the distance between the two sides of the rolling ring 21 in the axial direction is smaller than the distance between the two opposite sides of the first retaining ring 231 and the second retaining ring 232.
[0026] By fixing the first baffle ring 231 and the second baffle ring 232 to the inner wall of the rotary kiln body 1 and arranging the rolling ring 21 between the first baffle ring 231 and the second baffle ring 232, the rolling ring 21 is limited in the axial direction, so that when the powder enters between the bottom of the rolling ring 21 and the inner wall of the rotary kiln body 1, the rolling ring 21 can be raised to a certain height without being offset. At the same time, the distance between the two sides of the rolling ring 21 in the axial direction is smaller than the distance between the two sides opposite to the first baffle ring 231 and the second baffle ring 232, that is, there is a gap between the two sides of the rolling ring 21 in the axial direction corresponding to the first baffle ring 231 and the second baffle ring 232, so that the powder can pass through.
[0027] Preferably, the first baffle ring 231 and the second baffle ring 232 are both axially provided with a feeding hole 233 for powder to pass through, so that the powder can pass through the scraper mechanism 2 through the feeding holes 233 of the first baffle ring 231 and the second baffle ring 232, thereby not affecting the passage of the powder.
[0028] In this embodiment, the first baffle ring 231 and the second baffle ring 232 are welded to the inner wall of the rotary kiln body 1 to ensure the stability of the first baffle ring 231 and the second baffle ring 232 .
[0029] In this embodiment, the rolling ring 21 includes a rolling ring body 211 and a cylindrical roller 212 . The roller 212 is provided in plurality and the plurality of rollers 212 are arranged at intervals on the outer circumference of the rolling ring body 211 , and the rollers 212 can rotate relative to the rolling ring body 211 .
[0030] By allowing a plurality of rollers 212 to be spaced apart on the outer circumference of the roller ring body 211 and the rollers 212 to rotate relative to the roller ring body 211 , the roller ring body 211 can be rotated relative to the rotary kiln body 1 .
[0031] Preferably, a plurality of grooves 213 are spaced apart on the outer circumference of the roller ring body 211, and the plurality of rollers 212 are respectively disposed in the plurality of grooves 213, and the rollers 212 partially extend out of the grooves 213, so that the rollers 212 can roll on the inner wall of the rotary kiln body 1.
[0032] A plurality of grooves 213 are provided at intervals on the outer circumference of the roller ring body 211 for installing the roller 212 , so that assembly is convenient and the structure is simpler.
[0033] Furthermore, the roller 212 is correspondingly close to the first retaining ring 231 and the second retaining ring 232 at both ends in the axial direction, so as to limit the roller 212 and prevent the roller 212 from escaping from between the first retaining ring 231 and the second retaining ring 232, thereby ensuring the normal operation of the rolling ring 21.
[0034] In this embodiment, the scraping members 22 are provided on both sides of the rolling ring body 211 in the axial direction, so as to clean the powder in the areas near both sides of the rolling ring body 211 on the inner wall of the rotary kiln body 1.
[0035] Preferably, the roller ring body 211 is provided with a plurality of scraping members 22 at intervals along the circumferential direction to improve the cleaning efficiency and cleaning effect of the inner wall of the rotary kiln body 1 .
[0036] Furthermore, the scraper 22 includes a connecting rod 221 and a scraper 222, one end of the connecting rod 221 is fixed to the roller body 211 on the axial side, and the other end of the connecting rod 221 is connected to the scraper 222, and the scraper 222 is used to scrape off the powder on the inner wall of the rotary kiln body 1.
[0037] One end of the connecting rod 221 is fixed to the side surface of the rolling ring body 211, and the other end of the connecting rod 221 extends axially out of the first baffle ring 231 and the second baffle ring 232, and the other end of the connecting rod 221 is connected to the scraper 222, and the scraper 222 abuts against the inner wall of the rotary kiln body 1, so that when the rotary kiln body 1 rotates, the scraper 222 can scrape off the powder on the inner wall of the rotary kiln body 1.
[0038] Furthermore, the scraper 222 can be made of metal, rubber or silicone. When rubber and silicone are used, the inner wall of the rotary kiln body 1 can be avoided from being worn.
[0039] In this embodiment, a plurality of scraping mechanisms 2 are provided along the axial direction on the inner wall of the rotary kiln body 1 to clean powder materials in multiple sections of the inner wall of the rotary kiln body 1 .
[0040] In summary, the embodiment of the utility model provides a rotary kiln anti-sticking wall self-scraping device, which is composed of a rolling ring body, a roller, a first baffle ring, a second baffle ring and a scraper. It has a simple structure and low cost, and can clean the powder adhered to the inner wall of the rotary kiln body to ensure the calcination effect of the powder, and is highly practical.
[0041] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principle of the present invention. These improvements and substitutions should also be regarded as the protection scope of the present invention.
Claims
1. A rotary kiln wall-preventing self-scraping device, characterized in that: The invention comprises a rotary kiln body (1) and a scraping mechanism (2) arranged in the rotary kiln body (1); the inner wall of the rotary kiln body (1) is provided with a plurality of lifting plates (11) along the axial direction; the scraping mechanism (2) comprises a rolling ring (21), a scraping member (22) and an axial limit assembly (23); the rolling ring (21) is arranged on the inner wall of the rotary kiln body (1); the rolling ring (21) can rotate relative to the rotary kiln body (1) and can move radially relative to the rotary kiln body (1); the scraping member (22) is connected to the side surface of the rolling ring (21) in the axial direction so as to scrape off the powder on the inner wall of the rotary kiln body (1); and the axial limit assembly (23) is used to limit the axial movement of the rolling ring (21).
2. The rotary kiln wall-adhesion self-scraping device according to claim 1, characterized in that: The axial limiting assembly (23) comprises a first retaining ring (231) and a second retaining ring (232), wherein the first retaining ring (231) and the second retaining ring (232) are arranged on the inner wall of the rotary kiln body (1) at intervals along the axial direction, the rolling ring (21) is located between the first retaining ring (231) and the second retaining ring (232), and the distance between the two sides of the rolling ring (21) in the axial direction is smaller than the distance between the two opposite sides of the first retaining ring (231) and the second retaining ring (232).
3. The rotary kiln wall-adhesion self-scraping device according to claim 2, characterized in that: The first retaining ring (231) and the second retaining ring (232) are both provided with a material passing hole (233) along the axial direction for allowing powder to pass through.
4. The rotary kiln wall-adhesion-proof self-scraping device according to claim 2, characterized in that: The first retaining ring (231) and the second retaining ring (232) are welded to the inner wall of the rotary kiln body (1).
5. The rotary kiln wall-adhesion-proof self-scraping device according to claim 2, characterized in that: The rolling ring (21) comprises a rolling ring body (211) and a roller (212). A plurality of the rollers (212) are provided. The plurality of rollers (212) are arranged at intervals on the outer circumference of the rolling ring body (211), and the rollers (212) can rotate relative to the rolling ring body (211).
6. The rotary kiln wall-adhesion prevention self-scraping device according to claim 5, characterized in that: A plurality of grooves (213) are spaced apart on the outer circumference of the roller ring body (211), and the plurality of rollers (212) are respectively arranged in the plurality of grooves (213) in a one-to-one correspondence, and the rollers (212) partially extend out of the grooves (213) so that the rollers (212) can roll on the inner wall of the rotary kiln body (1).
7. The rotary kiln wall-adhesion-proof self-scraping device according to claim 6, characterized in that: The roller (212) is correspondingly close to the first retaining ring (231) and the second retaining ring (232) at two axial ends.
8. The rotary kiln wall-adhesion-proof self-scraping device according to claim 1, characterized in that: The scraper members (22) are provided on both sides of the rolling ring (21) in the axial direction.
9. The rotary kiln wall-adhesion-proof self-scraping device according to claim 1, characterized in that: The rolling ring (21) is provided with a plurality of scraping members (22) at intervals along the circumferential direction.
10. The rotary kiln wall-adhesion-proof self-scraping device according to claim 1, characterized in that: The scraper (22) comprises a connecting rod (221) and a scraper (222), one end of the connecting rod (221) is fixed to the side surface of the rolling ring (21), and the other end of the connecting rod (221) is connected to the scraper (222), and the scraper (222) is used to scrape powder off the inner wall of the rotary kiln body (1).