An on-line cleaning device for agglomerated blast furnace slag

Abstract

This invention discloses an online cleaning device for blast furnace slag caking, comprising a cooling channel, a water pipe installed on one side of the cooling channel, a first valve installed on the water pipe, and a sealing assembly connected to the end of the water pipe via a first pipe. A detection rod is slidably installed inside the sealing assembly, with one end of the detection rod passing through the water pipe and entering the cooling channel. Compared with the prior art, the cooling water in the cooling channel of this invention is always flowing, allowing operation to be carried out without stopping the machine. By reciprocating the movement of the detection rod, the operator can determine the degree of slag caking in the cooling channel based on the change in resistance it encounters, and can also directly break up the caking slag using the reciprocating motion of the detection rod. The broken slag is carried away by the continuously flowing cooling water, without affecting the production process of the Impala granulation system.

Description

Technical Field

[0001] This invention relates to the field of blast furnace production technology, and in particular to an online cleaning device for blast furnace slag caking. Background Technology

[0002] The Impala granulation system is a key technology for blast furnace slag treatment. This system uses a combination of water-quenched granulation and dynamic dehydration to rapidly cool and crush molten blast furnace slag at 1400-1500℃ into uniformly sized glassy particles, achieving resource utilization of industrial waste. However, during long-term operation, the cooling channels are susceptible to hardening due to the combined effects of fine slag particle deposition and hydration reactions. This hardening continuously reduces the effective flow cross-section of the channels, increasing the flow resistance of the cooling water. This not only reduces the slag granulation effect and cooling efficiency but also easily leads to system overflow, localized slag blockage, and other malfunctions, affecting the continuity of blast furnace production and operational stability.

[0003] Currently, the main methods for cleaning slag caking in the flow channels are still shutdown for maintenance, manual unblocking, or conventional high-pressure water washing. These methods require interrupting blast furnace and granulation system production, resulting in capacity loss. Manual cleaning requires entering the flow channels, leading to harsh working conditions and high labor intensity. High-pressure water washing can only remove loose surface slag and has limited effect on breaking up deep caking, failing to completely solve the flow channel blockage problem and making it difficult to meet the actual needs of continuous and efficient blast furnace production.

[0004] To address this issue, we propose an online blast furnace slag caking cleaning device. Summary of the Invention

[0005] The main objective of this invention is to provide an online cleaning device for blast furnace slag caking. The cooling water in the cooling channel is always flowing, and the operation can be carried out without stopping the machine. By reciprocating the movement of the detection rod, the operator can determine the degree of slag caking in the cooling channel based on the change in resistance it receives, and can also directly break up the caking slag with the reciprocating motion of the detection rod. The broken slag is carried away by the continuously flowing cooling water, and the entire process does not affect the production process of the blast furnace granulation system.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: An online cleaning device for blast furnace slag caking includes a cooling channel, a water pipe on one side of the cooling channel, a first valve on the water pipe, a sealing assembly connected to the end of the water pipe through a first pipe, a detection rod slidably disposed inside the sealing assembly, and one end of the detection rod passing through the water pipe and entering the cooling channel.

[0007] Furthermore, the sealing assembly includes a second pipe, a limiting sleeve, and a fixing nut. A retaining ring is provided on one side of the fixing nut. One end of the limiting sleeve is inserted into the second pipe, and the other end is located inside the fixing nut. The fixing nut is threadedly connected to the second pipe. The detection rod passes through the second pipe, the limiting sleeve, and the fixing nut, and an elastic sealing element is provided around the detection rod located between the limiting sleeve and the second pipe. The second pipe and the first pipe are detachably fixedly connected by a connecting device.

[0008] Furthermore, the limiting sleeve includes a sleeve body and a limiting ring fixedly connected to the sleeve body, and a groove matching the sleeve body is provided on one side of the second pipe.

[0009] Furthermore, the elastic seal is an asbestos rope.

[0010] Furthermore, the connecting device includes at least two sets of L-shaped grooves opened at the end of the first pipe, and a fixing block that matches the L-shaped groove is fixed around one end of the second pipe, and the fixing block is rotatably inserted into the L-shaped groove.

[0011] Furthermore, the outer diameter of the limiting ring is equal to the diameter of the hole of the fixing nut, and the diameter of the hole of the retaining ring is smaller than the outer diameter of the limiting ring.

[0012] Furthermore, the first pipe is fixedly connected to the water pipe by threads, the third pipe is inclined, the third pipe is connected to the first pipe, and a sealing ball matching the first pipe is installed inside the third pipe.

[0013] Furthermore, the inner side of the first pipe connecting to the second pipe has an inward recess, and the end of the second pipe inserted into the first pipe has an outward protrusion.

[0014] Furthermore, a sealing ring is provided on one side of the recessed portion.

[0015] Furthermore, the detection rod is a hollow tube, and a second valve is provided at the end of the detection rod away from the first pipe.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The cooling water in the cooling channel of this invention is always flowing, and the operation can be carried out without stopping the machine. By reciprocating the movement of the detection rod, the operator can judge the degree of slag agglomeration in the cooling channel based on the change of resistance it encounters, and can also directly break up the agglomerated slag with the reciprocating motion of the detection rod. The broken slag will be carried away by the continuously flowing cooling water, and the entire process does not affect the production process of the Imba granulation system.

[0017] The sealing assembly of the present invention is connected to the second pipe by a fixed nut and a threaded connection. The compression limiting sleeve presses the elastic seal tightly into the groove of the second pipe. At the same time, the connecting device cooperates with the sealing ring and the threaded sealing structure of the first pipe and the water pipe to form multiple sealing protections, which can effectively block the leakage of cooling water from various connection parts and the gap between the detection rod and the sealing assembly, ensuring the safety of the working environment.

[0018] The detection rod of this invention has a hollow structure and can be connected to a water hose via a second valve. During operation, the valve is opened, and high-pressure water can be introduced into the cooling channel through the detection rod. On the one hand, it can assist in impacting the slag that has been broken by the detection rod, causing it to quickly detach from the caking position. On the other hand, it can directly impact the unbroken caking slag, assisting in its breaking, further improving the efficiency and thoroughness of slag cleaning, and avoiding blockage of the cooling channel.

[0019] When the detection rod is pulled out after cleaning, the sealing ball in the third pipe will fall under the action of gravity and block the first pipe. This can effectively prevent a large amount of cooling water in the cooling channel from being discharged through the first pipe, which not only ensures the safety of operation, but also reduces the waste of water resources. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of an online cleaning device for blast furnace slag caking according to the present invention.

[0021] Figure 2 This is a schematic diagram of the connection structure of the sealing component, the first pipe, and the detection rod of an online cleaning device for blast furnace slag caking according to the present invention.

[0022] Figure 3 This is a schematic cross-sectional view of the sealing component of an online cleaning device for blast furnace slag caking according to the present invention.

[0023] Figure 4 This is a schematic diagram of the limiting sleeve structure of an online cleaning device for blast furnace slag caking according to the present invention.

[0024] Figure 5 This is a schematic diagram of the connection device structure of an online cleaning device for blast furnace slag caking according to the present invention.

[0025] Figure 6 This is a schematic diagram of the connection structure between the first and second pipes of an online cleaning device for blast furnace slag caking according to the present invention.

[0026] Figure 7 This is the first physical image.

[0027] Figure 8 This is the second physical image.

[0028] Figure 9 This is the third physical image.

[0029] In the diagram: 1. Cooling channel; 101. Water pipe; 102. First valve; 2. Detection rod; 3. First pipe; 301. Third pipe; 302. Inner recess; 303. Sealing ring; 304. Sealing ball; 4. Sealing assembly; 401. Second pipe; 4011. Groove; 4012. Outer protrusion; 402. Elastic seal; 403. Limiting sleeve; 4031. Limiting ring; 4032. Sleeve body; 404. Fixing nut; 4041. Retaining ring; 5. Second valve; 6. Connecting device; 601. L-shaped groove; 602. Fixing block. Detailed Implementation

[0030] The present invention will now be described in detail with reference to the accompanying drawings.

[0031] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0033] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances. Example 1

[0034] like Figure 1-6As shown, an online cleaning device for blast furnace slag caking includes a cooling channel 1, a water pipe 101 is provided on one side of the cooling channel 1, a first valve 102 is provided on the water pipe 101, and a sealing component 4 is connected to the end of the water pipe 101 through a first pipe 3. A detection rod 2 is slidably provided in the sealing component 4, and one end of the detection rod 2 passes through the water pipe 101 and enters the cooling channel 1.

[0035] In this embodiment, one end of the detection rod 2 can be inserted into the cooling channel 1 through the water pipe 101, and then the detection rod 2 is pulled back and forth. The resistance encountered by the detection rod 2 when it is pulled back and forth is used to determine the slag state in the cooling channel 1. Since the detection rod 2 can be pulled back and forth, the slag can be broken up, so that the broken slag can be washed away by the cooling water, thus avoiding blockage in the cooling channel 1. During this process, the sealing component 4 can prevent the cooling water in the cooling channel 1 from flowing out through the outer surface of the detection rod 2.

[0036] During the cleaning process, the cooling water in the cooling channel 1 is constantly flowing, enabling cleaning without stopping the machine. Although the detection rod 2 can only move horizontally at one height, the broken slag will be carried away by the cooling water, so the slag in other positions will continue to fall to the position corresponding to the detection rod 2 under the action of the cooling water, thus allowing the detection rod 2 to continue to process the caking slag.

[0037] Among them, such as Figure 2 and Figure 3 As shown, the sealing assembly 4 includes a second pipe 401, a limiting sleeve 403, and a fixing nut 404. A retaining ring 4041 is provided on one side of the fixing nut 404. One end of the limiting sleeve 403 is inserted into the second pipe 401, and the other end is located inside the fixing nut 404. The fixing nut 404 is threadedly connected to the second pipe 401. The detection rod 2 passes through the second pipe 401, the limiting sleeve 403, and the fixing nut 404, and is located between the limiting sleeve 403 and the second pipe 401. An elastic sealing element 402 is provided around the detection rod 2. The second pipe 401 and the first pipe 3 are detachably fixedly connected by a connecting device 6. The elastic sealing element 402 is an asbestos rope. The limiting sleeve 403 includes a sleeve body 4032 and a limiting ring 4031 fixedly connected to the sleeve body 4032. A groove 4011 matching the sleeve body 4032 is opened on one side of the second pipe 401. The sleeve body 4032 can be inserted into the groove 4011. When the fixing nut 404 moves, the retaining ring 4041 can apply a force to the limiting ring 4031. The outer diameter of the limiting ring 4031 is equal to the hole diameter of the fixing nut 404, and the hole diameter of the retaining ring 4041 is smaller than the outer diameter of the limiting ring 4031.

[0038] The first pipe 3 is fixedly connected to the water pipe 101, and the second pipe 401 is connected to the first pipe 3. Therefore, the second pipe 401, the first pipe 3, and the water pipe 101 are interconnected. Figure 3 As shown, the operator inserts the detection rod 2 into the second pipe 401, and then sequentially places the limiting sleeve 403 and the fixing nut 404 around the detection rod 2. Asbestos rope is then wrapped around the surface of the detection rod 2 between the limiting sleeve 403 and the second pipe 401. The operator then pushes the limiting sleeve 403 into the second pipe 401, thereby squeezing the asbestos rope into the groove 4011 of the second pipe 401. Subsequently, the operator rotates the fixing nut 404, causing it to be threaded onto the second pipe 401. At this time, the retaining ring 4041 of the fixing nut 404 applies force to the limiting sleeve 403, fixing it within the groove 4011, thus squeezing and fixing the asbestos rope within the groove 4011, thereby sealing the connection between the detection rod 2, the limiting sleeve 403, and the second pipe 401.

[0039] The detection rod 2, the limiting sleeve 403, the second pipe 401, and the retaining ring 4041 are all clearance fit. Therefore, the detection rod 2 can slide relative to the sealing assembly 4. So after the second pipe 401 is connected to the first pipe 3, the detection rod 2 can be inserted into the cooling channel 1 through the first pipe 3 and the water pipe 101. When a horizontal force is applied to the detection rod 2, the end of the detection rod 2 can reciprocate within the cooling channel 1. During this process, the asbestos rope will deform within the tank 4011 and always fill the tank 4011, preventing water in the cooling channel 1 from leaking through the connection between the detection rod 2, the limiting sleeve 403, and the second pipe 401. This ensures that the slag in the cooling channel 1 can be treated without stopping the machine.

[0040] The surface of the first pipe 3 has external threads, and the inner side of the water pipe 101 has internal threads. The two are fixedly connected by threads. When connecting, the threaded part of the first pipe 3 is wrapped with PTFE tape, so the connection between the first pipe 3 and the water pipe 101 will not leak.

[0041] The diameter of the asbestos rope is larger than the gap between the sleeve 4032 and the detection rod 2. Therefore, during the pulling of the detection rod 2, the asbestos rope will not get embedded in the gap between the sleeve 4032 and the detection rod 2, ensuring the sealing performance of the connection between the asbestos rope and the detection rod 2, the limiting sleeve 403, and the second pipe 401.

[0042] Among them, such as Figure 5 As shown, the connecting device 6 includes at least two sets of L-shaped grooves 601 opened at the end of the first pipe 3. A fixing block 602 matching the L-shaped groove 601 is fixed around one end of the second pipe 401. The fixing block 602 is rotated and inserted into the L-shaped groove 601, thereby fixing the second pipe 401 and the first pipe 3 in a fixed connection.

[0043] And, as Figure 6As shown, the inner side of the first pipe 3 connecting to the second pipe 401 has a concave portion 302, and the end of the second pipe 401 inserted into the first pipe 3 has an outward protrusion 4012. A sealing ring 303 is provided on one side of the concave portion 302. The concave portion 302 and the outward protrusion 4012 are matched in shape, and the contacting end faces are inclined surfaces with a certain angle. When the fixing block 602 is rotated and inserted into the L-shaped groove 601, the concave portion 302 and the outward protrusion 4012 will contact each other, and the sealing ring 303 will be squeezed by both, thereby improving the sealing performance of the connection between the first pipe 3 and the second pipe 401 and preventing water leakage.

[0044] Example 2 Based on Example 1, such as Figure 6 As shown, a third pipe 301 is connected to the first pipe 3. The third pipe 301 is inclined and contains a sealing ball 304 that matches the first pipe 3. After the first pipe 3 is connected to the water pipe 101, the third pipe 301 is in a vertical state. When cleaning the slag, the detection rod 2 first passes through the first pipe 3, and then the first pipe 3 is connected to the water pipe 101. After cleaning, the detection rod 2 is pulled out. At this time, the sealing ball 304 falls under the action of gravity. Because the third pipe 301 is inclined, the sealing ball 304 rolls a certain distance after falling (not directly below the third pipe 301), thereby blocking the first pipe 3 and preventing a large amount of water in the cooling channel 1 from being discharged through the first pipe 3 after the detection rod 2 is pulled out.

[0045] The sealing ball 304 is made of stainless steel. After it falls into the first pipe 3, it comes into contact with the inner wall of the first pipe 3, thereby generating friction. It uses friction to position itself. The pressure in the cooling channel 1 is between 20 kg and 30 kg, which is insufficient to drive the sealing ball 304 to overcome the aforementioned friction and move. Example 3

[0046] Based on Example 1 or 2, such as Figure 2 As shown, the detection rod 2 is a hollow tube, and a second valve 5 is provided at the end of the detection rod 2 away from the first pipe 3. In this embodiment, the end of the detection rod 2 can be connected to a water supply hose. When cleaning is carried out, the second valve 5 can be opened. At this time, water in the plant area is transported into the cooling channel 1 through the water supply hose and the detection rod 2, thereby impacting the slag broken by the detection rod 2, causing the broken slag to quickly leave its original position. In addition, the water with impact force can also break up the caking slag, improving the breaking efficiency of the caking slag.

[0047] Working principle: Cooling water in cooling channel 1 is always flowing. After opening the first valve 102, the detection rod 2 can be inserted into cooling channel 1 through water pipe 101, first pipe 3, and sealing assembly 4. When the detection rod 2 is reciprocated, the resistance it encounters can be used to determine the slag agglomeration state in cooling channel 1. At the same time, the reciprocating motion of the detection rod 2 breaks up the agglomerated slag. The broken slag is carried away by the cooling water, and the remaining slag will descend to the position corresponding to the detection rod 2 under the action of the cooling water for continuous processing. In the sealing assembly 4... The fixing nut 404 is threadedly connected to the second pipe 401. The retaining ring 4041 squeezes the limiting sleeve 403, fixing the elastic sealing element 402 (asbestos rope) wrapped around the detection rod 2 inside the groove 4011 of the second pipe 401. This achieves a seal at the connection between the detection rod 2, the limiting sleeve 403 and the second pipe 401, preventing cooling water leakage. Furthermore, the detection rod 2 has a hollow structure, which can be connected to a water supply hose by opening the second valve 5 to supply water into the cooling channel 1, assisting in impact crushing of slag and improving cleaning efficiency.

[0048] The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be construed as limiting the scope of protection of the present invention. All equivalent transformations or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. An online cleaning device for blast furnace slag caking, comprising a cooling channel (1), wherein a water pipe (101) is provided on one side of the cooling channel (1), and a first valve (102) is provided on the water pipe (101), characterized in that: The end of the water pipe (101) is connected to a sealing assembly (4) through a first pipe (3). A detection rod (2) is slidably disposed inside the sealing assembly (4). One end of the detection rod (2) passes through the water pipe (101) and enters the cooling channel (1).

2. The online cleaning device for blast furnace slag caking according to claim 1, characterized in that: The sealing assembly (4) includes a second pipe (401), a limiting sleeve (403), and a fixing nut (404). A retaining ring (4041) is provided on one side of the fixing nut (404). One end of the limiting sleeve (403) is inserted into the second pipe (401), and the other end is located in the fixing nut (404). The fixing nut (404) is threadedly connected to the second pipe (401). The detection rod (2) passes through the second pipe (401), the limiting sleeve (403), and the fixing nut (404), and an elastic sealing element (402) is provided around the detection rod (2) located between the limiting sleeve (403) and the second pipe (401). The second pipe (401) and the first pipe (3) are detachably fixedly connected by a connecting device (6).

3. The online cleaning device for blast furnace slag caking according to claim 2, characterized in that: The limiting sleeve (403) includes a sleeve body (4032) and a limiting ring (4031) fixedly connected to the sleeve body (4032). A groove (4011) matching the sleeve body (4032) is opened on one side of the second pipe (401).

4. The online cleaning device for blast furnace slag caking according to claim 2, characterized in that: The elastic seal (402) is an asbestos rope.

5. The online cleaning device for blast furnace slag caking according to claim 2, characterized in that: The connecting device (6) includes at least two sets of L-shaped grooves (601) opened at the end of the first pipe (3), and a fixing block (602) matching the L-shaped groove (601) is fixed around one end of the second pipe (401). The fixing block (602) is rotatably inserted into the L-shaped groove (601).

6. The online cleaning device for blast furnace slag caking according to claim 3, characterized in that: The outer diameter of the limiting ring (4031) is equal to the hole diameter of the fixing nut (404), and the hole diameter of the retaining ring (4041) is smaller than the outer diameter of the limiting ring (4031).

7. The online cleaning device for blast furnace slag caking according to claim 1, characterized in that: The first pipe (3) is fixedly connected to the water pipe (101) by threads. A third pipe (301) is connected to the first pipe (3). The third pipe (301) is inclined and a sealing ball (304) matching the first pipe (3) is provided inside the third pipe (301).

8. The online cleaning device for blast furnace slag caking according to claim 2, characterized in that: The inner side of the first pipe (3) connecting to the second pipe (401) has a concave portion (302), and the end of the second pipe (401) inserted into the first pipe (3) has an outward protrusion (4012).

9. The online cleaning device for blast furnace slag caking according to claim 8, characterized in that: A sealing ring (303) is provided on one side of the recess (302).

10. An online cleaning device for blast furnace slag caking according to any one of claims 1-9, characterized in that: The detection rod (2) is a hollow tube, and a second valve (5) is provided at the end of the detection rod (2) away from the first pipe (3).

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