A tool for quickly cleaning the pass of a double-arch kiln

Abstract

This utility model provides a tool for quickly cleaning the passage of a double-chamber kiln, belonging to the technical field of maintenance equipment for double-chamber lime kilns. It includes a shovel handle, with a shovel head connected to the front end of the handle. The shovel handle has a cavity extending through it along its axial direction. The shovel head includes a flat shovel plate and a rear side plate vertically disposed at the rear edge of the shovel plate. The middle part of the rear side plate is fixedly connected to the front end of the shovel handle, and the middle part of the rear side plate also has a round hole that communicates with the cavity of the shovel handle. This utility model solves the technical problem that traditional iron rods are difficult to embed into hard nodules to form an effective point of force, and that cleaning nodules is time-consuming, laborious, and inefficient.

Description

Technical Field

[0001] This utility model relates to the technical field of maintenance equipment for double-chamber lime kilns, and in particular to a tool for quickly cleaning the passage of a double-chamber kiln. Background Technology

[0002] The double-chamber lime kiln is a parallel-flow, regenerative double-chamber vertical kiln. The calcination exhaust gas from the combustion chamber enters the regenerative chamber through the middle channel to preheat the limestone. The regenerative process is reversed every 15 to 20 minutes. During the reversal, the air inside the kiln is still, and the dust carried by the high-temperature gas deposits in the channel. This dust is prone to forming nodules during subsequent calcination.

[0003] In existing cleaning processes, pneumatic picks are commonly used to treat refractory nodules in kilns. These picks break up the nodules through high-frequency mechanical impact, making them suitable for removing harder nodules. However, the high impact force of pneumatic picks can easily damage the refractory bricks inside the kiln if not properly controlled, affecting the kiln's service life. Therefore, to avoid damaging the refractory bricks, workers use iron rods, which are mostly rod-shaped with flat or pointed heads. By manually applying pushing or prying force, these rods are inserted into the gaps between the nodules and the kiln wall to gradually peel off the nodules. This method replaces pneumatic picks in areas requiring delicate handling.

[0004] However, the existing technologies mentioned above still have the following drawbacks: traditional iron rods are difficult to embed into the surface of the nodule to form an effective point of force, and cannot quickly destroy the structural integrity of the nodule; therefore, they can only rely on manual prying and force application, which makes the operation time-consuming and laborious, and it is difficult to achieve efficient cleaning. Utility Model Content

[0005] This application provides a tool for quickly cleaning the double-chamber kiln passage, solving the technical problem that traditional iron rods are difficult to embed into hard nodules to form an effective point of force, and that cleaning nodules is time-consuming, labor-intensive, and inefficient.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a tool for quickly cleaning the double-chamber kiln passage, including a shovel handle, a shovel head connected to the front end of the shovel handle, a cavity extending through the shovel handle along its axial direction inside the shovel handle, the shovel head including a flat shovel plate and a rear side plate vertically disposed at the rear edge of the shovel plate, the middle part of the rear side plate being fixedly connected to the front end of the shovel handle, and a round hole being provided in the middle part of the rear side plate, the round hole communicating with the cavity of the shovel handle.

[0007] When using this tool, the operator holds the handle and inserts the shovel head into the double-chamber kiln passage, using the shovel plate to scrape or pry away the nodules. Because the handle has a cavity running through it axially, and the round hole in the middle of the rear side plate of the shovel head is connected to this cavity, compressed air or cleaning water can be delivered to the nodules through the cavity of the handle during the cleaning process. The fluid acts on the nodules through the round hole of the rear side plate, and the impact force of the fluid, the chemical reaction with the nodules, or the change of thermal stress can help to destroy the nodule structure, making it easier for the shovel plate to embed into the nodules and form an effective point of force. This reduces the force required for manual prying, improves cleaning efficiency, and reduces the risk of damage to the refractory bricks of the kiln wall caused by relying solely on mechanical force.

[0008] As a further improvement to the above solution, the width of the front end of the shovel is smaller than the width of the rear end of the shovel; wherein, the narrower area at the front end of the shovel reduces the resistance when inserting into the gap between the nodule and the kiln wall, making it easier for the tool to be quickly inserted into place; the wider area at the rear end can increase the contact area with the nodule, so that the force can be more evenly distributed on the nodule during shoveling or prying.

[0009] As a further improvement to the above solution, the front edge of the shovel plate is toothed; this can create multiple stress concentration points, thereby quickly destroying the structural integrity of the nodule and causing the nodule to break apart as a whole.

[0010] As a further improvement to the above solution, the shovel head also includes two side plates, the surfaces of which are perpendicular to the surfaces of the rear side plate and the shovel plate. The two side plates are located on the two side edges of the shovel plate, one end of which is connected to the two ends of the rear side plate, and the other end of which is connected to a wing plate. The angle α between the extension direction of the wing plate and the shovel plate is an acute angle. A scraper is connected between the two wing plates, and the scraper is located at the end of the wing plate away from the shovel plate. Thus, the operator can adjust the angle of the shovel head to make the scraper contact the nodules in the channel that are difficult to reach directly, and use the pushing or pulling force of the shovel handle to drive the scraper to scrape off the nodules in these locations.

[0011] As a further improvement to the above solution, a plug is installed at the circular hole of the rear side plate. The plug includes a circular tube and an end cap that seals one end of the circular tube. The circular tube fits into the circular hole in the middle of the rear side plate, and the end cap has multiple through holes. Thus, when fluid is transported through the shovel handle cavity, the plug can divert and guide the fluid, so that the fluid acts evenly on the surface of the nodule through the multiple through holes of the end cap.

[0012] As a further improvement to the above solution, the cavity inside the shovel handle is cylindrical and has internal threads, and the diameter of the circular hole in the middle of the rear side plate is the same as the diameter of the cavity inside the shovel handle; the circular tube of the plug has external threads and is threaded into the cavity of the shovel handle; thus, the installation and replacement of the plug can be convenient, and the operator can quickly replace the plug with different through hole parameters according to the actual cleaning needs.

[0013] As a further improvement to the above solution, the shovel handle includes a fixed pipe and a splicing pipe. The front end of the fixed pipe is connected to the shovel head, and the rear end of the fixed pipe is connected to the splicing pipe. Thus, the overall length of the shovel handle can be flexibly adjusted by increasing or decreasing the number of splicing pipes to meet the cleaning needs of double-chamber kiln channels at different depths.

[0014] As a further improvement to the above solution, the rear end of the fixed tube is provided with a sleeve, the inner wall of the sleeve is provided with internal threads, the front end of the splicing tube is provided with external threads, and the external threads of the splicing tube are engaged with the internal threads of the sleeve.

[0015] As can be seen from the above technical solutions, this utility model has at least the following technical effects or advantages: When using this tool, the operator holds the handle and inserts the shovel head into the double-chamber kiln passage, using the shovel plate to scrape or pry away the nodules. Because the handle has a cavity running through it axially, and the round hole in the middle of the rear side plate of the shovel head is connected to this cavity, compressed air or cleaning water can be delivered to the nodules through the cavity of the handle during the cleaning process. The fluid acts on the nodules through the round hole of the rear side plate, and the impact force of the fluid, the chemical reaction with the nodules, or the change of thermal stress can help to destroy the nodule structure, making it easier for the shovel plate to embed into the nodules and form an effective point of force. This reduces the force required for manual prying, improves cleaning efficiency, and reduces the risk of damage to the refractory bricks of the kiln wall caused by relying solely on mechanical force. Attached Figure Description

[0016] To more clearly illustrate the technical solution of this utility model, the accompanying drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 for Figure 1 A magnified view of a portion of point A in the middle; Figure 3 for Figure 1 A magnified view of a portion of point B in the middle; Figure 4 for Figure 1 A magnified view of a portion of point C in the middle; Figure 5 This is a schematic diagram of the assembled structure of this utility model; Figure 6 This is a side view of the present invention.

[0017] Explanation of reference numerals in the attached drawings: 1. Shovel handle, 101. Fixed pipe, 1011. Sleeve, 102. Splice pipe, 2. Shovel head, 201. Shovel plate, 202. Rear side plate, 203. Side plate, 204. Wing plate, 205. Scraper, 3. Plug, 301. Round pipe, 302. End cap. Detailed Implementation To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, other embodiments obtained by those skilled in the art without creative effort are all within the scope of protection of this patent.

[0018] This utility model discloses a tool for quickly cleaning the channels of a double-chamber kiln, such as... Figures 1 to 4 As shown, it includes a shovel handle 1 and a shovel head 2. The shovel handle 1 is a hollow tubular structure with an axially penetrating cavity inside, which can serve as a fluid transport channel. The shovel head 2 is fixedly connected to the front end of the shovel handle 1 and includes a flat shovel plate 201 and a rear side plate 202 perpendicularly disposed at the rear edge of the shovel plate 201. The middle part of the rear side plate 202 is fixedly connected to the front end of the shovel handle 1 and has a round hole. The round hole communicates with the cavity of the shovel handle 1, which can realize the smooth transport of fluid from the shovel handle 1 to the shovel head 2.

[0019] In this embodiment, the shovel handle 1 is made of heat-resistant stainless steel to adapt to the high-temperature environment and long-term operation requirements within the double-chamber kiln channel. The internal cavity of the shovel handle 1 has a through-type structure, which can deliver compressed air or cleaning water according to cleaning needs, and assist in cleaning through the reaction of fluid with the nodules. The shovel plate 201 and the rear side plate 202 of the shovel head 2 are vertically welded and fixed, forming an "L"-shaped folded edge structure.

[0020] To further improve the cleaning effect, the width of the front end of the shovel plate 201 is smaller than the width of its rear end, forming a trapezoidal structure. The narrower width of the front end of the shovel head 2 facilitates insertion into the gap between the nodule and the kiln wall, reducing insertion resistance and allowing the tool to quickly reach its destination. The wider width of the rear end of the shovel head 2 increases its contact area with the nodule. According to the principles of mechanics, the larger the contact area, the more uniform the force per unit area. This avoids excessive local force that could damage the refractory bricks of the kiln wall, and also allows the large-area force to quickly disrupt the integrity of the nodule, making it easier for the nodule to fall off.

[0021] The front edge of the shovel plate 201 has a serrated structure, which significantly improves the friction with the nodules compared to traditional smooth edges. In actual operation, the tips of the serrated edge can easily embed into the surface of the nodules, especially for harder nodules, creating multiple stress concentration points that quickly destroy the structural integrity of the nodules, causing them to break apart as a whole. Combined with subsequent shoveling operations, this greatly reduces the difficulty of cleaning.

[0022] Furthermore, since the distribution of nodules within the double-chamber kiln channel can be quite complex, with some nodules located on the sides or corners of the channel—locations that are difficult to access directly—in this embodiment, if... Figure 5 , Figure 6 As shown, the shovel head 2 also includes two side plates 203, two wing plates 204, and a scraper 205. The side plates 203 are perpendicular to the rear side plates 202 and the scraper 201. The bottom of the side plates 203 is fixedly connected to the scraper 201 by welding, and the rear end of the side plates 203 is fixedly welded to the rear side plates 202. This enhances the bending resistance of the scraper 201 and the overall rigidity of the shovel head 2, thereby ensuring that the shovel head 2 is not easily deformed when shoveling up lumps.

[0023] Two wing plates 204 are respectively connected to the side of the side plate 203 away from the rear edge of the shovel plate 201. The angle α between their extension direction and the shovel plate 201 forms an acute angle, allowing the wing plates 204 to extend to the front sides of the shovel plate 201. A scraper 205 is fixedly connected to the end of the two wing plates 204 away from the shovel plate 201, and is perpendicular to the wing plates 204. Its length is approximately equal to the width of the rear end of the shovel plate 201. During the cleaning operation, when the shovel plate 201 cleans the nodules on the front of the channel, the operator can adjust the angle of the shovel head 2 to make the scraper 205 contact the nodules on the side or corner of the channel. The thrust of the shovel handle 1 drives the scraper 205 to scrape away these hard-to-reach nodules, effectively improving the comprehensiveness of the channel cleaning and avoiding cleaning dead corners.

[0024] In this embodiment, a plug 3 is also installed at the circular hole of the side plate 202. The plug 3 includes a circular tube 301 and an end cap 302, wherein the circular tube 301 cooperates with the circular hole in the middle of the rear side plate 202, and the end cap 302 seals one end of the circular tube 301 and has multiple through holes. The function of the plug 3 is, on the one hand, to control the outflow direction and flow rate of compressed air or water, and to allow the fluid to act evenly on the surface of the nodule through the through holes on the end cap, avoiding nodule splashing or kiln wall damage caused by excessive single-point impact; on the other hand, the plug 3 is detachable, so that it can be replaced according to actual cleaning needs. For example, for nodules of different intensities, plugs 3 with different numbers or diameters of through holes can be selected to adjust the fluid output state and optimize the cleaning effect.

[0025] To ensure the stability and sealing of the connection between the plug 3 and the shovel handle 1, the cavity inside the shovel handle 1 near the shovel head 2 is provided with internal threads, and the diameter of the circular hole in the middle of the rear side plate 202 is the same as the diameter of the cavity inside the shovel handle 1. Correspondingly, the circular tube 301 of the plug 3 is provided with external threads, which mate with the internal threads of the cavity of the shovel handle 1. This threaded connection method makes the installation and removal of the plug 3 more convenient, allowing operators to quickly replace it as needed.

[0026] Because the depths of different double-chamber kiln channels vary, to improve the versatility of the tool, in this embodiment, the shovel handle 1 adopts a connectable structure, which includes a fixed pipe 101 and a connecting pipe 102. The front end of the fixed pipe 101 is connected to the shovel head 2, and the rear end is connected to the connecting pipe 102. Thus, the overall length of the shovel handle 1 can be adjusted by increasing or decreasing the number of connecting pipes 102 to adapt to the cleaning needs of channels at different depths.

[0027] Specifically, the connection between the fixed pipe 101 and the splicing pipe 102 is achieved through a threaded fit. The rear end of the fixed pipe 101 is provided with a sleeve 1011, the inner wall of which has internal threads; the front end of the splicing pipe 102 has external threads that match the internal threads of the sleeve 1011. This connection method is simple to operate; assembly is completed simply by screwing the splicing pipe 102 into the sleeve 1011. The connection is stable and will not loosen due to vibration during operation. At the same time, the splicable design facilitates the transportation and storage of the tool. When not in use, the splicing pipe 102 can be detached from the fixed pipe 101, reducing the space occupied by the tool.

[0028] When using this tool to clean the channels of a double-chamber kiln, the operation process is as follows: First, based on the depth of the double-chamber kiln channel, the shovel handle 1 is adjusted to a suitable length by connecting the sleeve 1011 at the rear end of the fixed pipe 101 with the splicing pipe 102 through the threaded engagement, ensuring that the operator can easily insert the shovel head 2 into the nodule position in the channel.

[0029] If fluid assistance is required during the cleaning process, the operator must first select a suitable plug 3. Depending on the strength of the nodule, when the nodule strength is low, a plug 3 with more through holes and a larger diameter can be selected to increase the fluid output; when the nodule strength is high, a plug 3 with fewer through holes and a smaller diameter should be selected to increase the fluid injection pressure. After selecting the plug 3, its circular tube 301 is screwed tightly into the internal thread of the shovel handle 1 cavity to ensure that the end cap 302 and the rear side plate 202 fit tightly together to prevent fluid leakage.

[0030] During the cleaning operation, the operator holds the rear end of the shovel handle 1 and inserts the shovel head 2 into the nodule within the channel. When dealing with smaller nodules, compressed air is introduced into the nodule through the cavity of the shovel handle 1. The compressed air flows towards the nodule through the through hole of the plug 3. On one hand, the compressed air comes into contact with the high-temperature nodule, causing it to cool down rapidly, and the rapid change in thermal stress causes cracks to form in the nodule. On the other hand, the blowing force of the compressed air can blow the loosened nodule fragments away from the kiln wall. Combined with the operator pushing the shovel handle 1, the shovel plate 201 scrapes the nodule, causing it to quickly detach from the kiln wall. When encountering larger nodules, a small amount of cleaning water is introduced into the nodule through the cavity of the shovel handle 1. The water flows onto the nodule through the shovel head 2, reacting rapidly with the CaO in the nodule, causing volume expansion and destroying the nodule's structure from the inside. At the same time, the rapid evaporation of the water absorbs heat, causing the nodule to cool down rapidly, generating thermal stress cracks. Then, the operator uses the shovel head 2 to scrape, causing the nodule to gradually break up and detach from the kiln wall. For nodules in the channel that are difficult to remove directly with the scraper 201, the operator can adjust the angle of the scraper head 2 so that the scraper 205 comes into contact with the nodules, and then push or pull the scraper handle 1 to drive the scraper 205 to scrape off the nodules.

[0031] After the cleaning operation is completed, the operator shuts off the fluid source and removes the tools from the channel. Then, the splice pipe 102 is unscrewed from the sleeve 1011 of the fixed pipe 101, and the shovel head 2 and shovel handle 1 are cleaned to remove any residual nodules, debris and impurities from the surface. Finally, all parts are stored for future use.

[0032] Compared with the prior art, this invention avoids damage to the refractory bricks of the kiln wall caused by excessive force from pneumatic hammers. By using fluid, the force required for mechanical operation can be reduced, thus protecting the kiln structure and reducing the difficulty of cleaning.

[0033] In the description of this utility model, the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "vertical," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for describing this utility model and do not require that this utility model be constructed or operated in a specific orientation, and therefore should not be construed as limiting this utility model. The terms "connected" and "linked" in this utility model should be interpreted broadly. For example, they can refer to a connection or a detachable connection; they can refer to a direct connection or an indirect connection through intermediate components. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0034] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in its embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novelty disclosed herein.

Claims

1. A tool for quickly cleaning a double-chamber kiln passage, comprising a shovel handle (1), wherein a shovel head (2) is connected to the front end of the shovel handle (1), characterized in that, The shovel handle (1) has a cavity that extends through it along its axial direction. The shovel head (2) includes a flat shovel plate (201) and a rear side plate (202) that is perpendicular to the rear edge of the shovel plate (201). The middle part of the rear side plate (202) is fixedly connected to the front end of the shovel handle (1), and the middle part of the rear side plate (202) is also provided with a round hole that communicates with the cavity of the shovel handle (1).

2. The tool for quickly cleaning the passageway of a double-chamber kiln according to claim 1, characterized in that, The width of the front end of the shovel (201) is smaller than the width of the rear end of the shovel (201).

3. The tool for quickly cleaning the passageway of a double-chamber kiln according to claim 2, characterized in that, The front edge of the shovel (201) is serrated.

4. The tool for quickly cleaning the passageway of a double-chamber kiln according to claim 3, characterized in that, The shovel head (2) also includes two side plates (203). The surface of the side plates (203) is perpendicular to the surface of the rear side plate (202) and the surface of the shovel plate (201). The two side plates (203) are located on the two sides of the shovel plate (201). One end of the two side plates (203) is connected to both ends of the rear side plate (202). The other end of the two side plates (203) is connected to a wing plate (204). The angle α between the extension direction of the wing plate (204) and the shovel plate (201) is acute. A scraper (205) is connected between the two wing plates (204). The scraper (205) is located at the end of the wing plate (204) away from the shovel plate (201).

5. A tool for quickly cleaning a double-chamber kiln passage according to any one of claims 1 to 4, characterized in that, A plug (3) is installed at the round hole of the rear side plate (202). The plug (3) includes a round tube (301) and an end cap (302) that seals one end of the round tube (301). The round tube (301) fits into the round hole in the middle of the rear side plate (202), and the end cap (302) has multiple through holes.

6. A tool for quickly cleaning a double-chamber kiln passage according to claim 5, characterized in that, The cavity inside the shovel handle (1) is cylindrical and has internal threads. The diameter of the round hole in the middle of the rear side plate (202) is the same as the diameter of the cavity inside the shovel handle (1). The round tube (301) of the plug (3) has external threads and is threaded to the cavity of the shovel handle (1).

7. The tool for quickly cleaning the passageway of a double-chamber kiln according to claim 1, characterized in that, The shovel handle (1) includes a fixed tube (101) and a splicing tube (102). The front end of the fixed tube (101) is connected to the shovel head (2), and the rear end of the fixed tube (101) is connected to the splicing tube (102).

8. A tool for quickly cleaning a double-chamber kiln passage according to claim 7, characterized in that, The rear end of the fixed tube (101) is provided with a sleeve (1011), the inner wall of the sleeve (1011) is provided with an internal thread, the front end of the splicing tube (102) is provided with an external thread, and the external thread of the splicing tube (102) is engaged with the internal thread of the sleeve (1011).

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