Cooling plate easy to disassemble

Abstract

The utility model relates to a cooling plate easy to disassemble, which comprises a cooling plate body, a lifting lug and two plugs, a cooling channel is arranged in the cooling plate body, two sand cleaning holes in the front-back direction are arranged on the rear end face of the cooling plate body, and the two sand cleaning holes are both communicated with the cooling channel; the lifting lug is mounted at the central position of the rear end surface of the cooling plate body and is positioned between the two sand cleaning holes; the sand cleaning device is characterized in that external threads are arranged on the outer walls of the two plugs, internal threads matched with the external threads are arranged on the inner walls of the two sand cleaning holes, and the two plugs are installed in the corresponding sand cleaning holes through mutual matching of the external threads and the internal threads; the cooling plate easy to disassemble is further provided with two lifting bolts, and the rod portions of the two lifting bolts are matched with the internal threads on the inner walls of the corresponding sand cleaning holes respectively. According to the cooling plate easy to disassemble, drawing points can be increased, the lifting lugs and the cooling plate body are prevented from deforming in the drawing process, and later maintenance of the cooling plate is facilitated.

Description

Technical Field

[0001] This utility model relates to the technical field of cooling equipment for high-temperature smelting furnaces, and in particular to an easily detachable cooling plate. Background Technology

[0002] Cooling plates, as a primary cooling device in blast furnaces, are installed inside the furnace, particularly in the bosh area. The basic principle of operation is to cool the refractory brick lining through point cooling, maintaining its thickness and thus protecting the blast furnace shell. Typically, a blast furnace requires thousands of cooling plates. Therefore, the better the cooling effect on the refractory brick lining, the longer its service life, and consequently, the longer the blast furnace's lifespan.

[0003] Currently, most cooling plates used in blast furnaces are formed using conventional pure copper casting processes. During the casting process of the cooling plate, sand cores need to be set in the cooling plate to form cooling channels, and sand cleaning holes need to be reserved on the rear end face of the cooling plate so that the sand cores inside the cooling plate can be poured out through the sand cleaning holes after the cooling plate is cast.

[0004] like Figure 1 As shown, the traditional cooling plate structure includes a cooling plate body 1, lifting lugs 2, and two plugs 3. The cooling plate body 1 has a cooling channel 11 inside. Two sand-cleaning holes 12 communicating with the cooling channel 11 are located on the rear end face 10 of the cooling plate body 1. The two plugs 3 are respectively installed in the corresponding sand-cleaning holes 12 by plug welding 01, with the outer wall of the plug 3 tightly fitting the inner wall of the sand-cleaning hole 12. The lifting lugs 2 are installed at the center of the rear end face 10 of the cooling plate body 1, and are positioned between the two sand-cleaning holes 12. When the cooling plate body leaks and fails, requiring removal from the blast furnace, a jack or puller device is used to hook the lifting lugs on the cooling plate, and the cooling plate is pulled out of the blast furnace. This type of cooling plate only has one pull point located at the center of the rear end face, causing the force on the lifting lugs to be concentrated. This can easily cause deformation of the cooling plate body during the pulling process, affecting the later maintenance of the cooling plate. Utility Model Content

[0005] The problem to be solved by this utility model is to provide an easily detachable cooling plate. This easily detachable cooling plate can increase the number of pulling points and distribute the force during the pulling process to prevent the lifting lugs from causing deformation of the cooling plate body during the pulling process, and facilitate the later maintenance of the cooling plate.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0007] A removable cooling plate includes a cooling plate body, a lifting lug, and two plugs. The cooling plate body has a cooling channel inside, and two sand-cleaning holes running forward and backward are provided on the rear end face of the cooling plate body, both of which communicate with the cooling channel. The lifting lug is installed at the center of the rear end face of the cooling plate body, and the lifting lug is located between the two sand-cleaning holes. The key feature is that the outer walls of the two plugs are provided with external threads, and the inner walls of the two sand-cleaning holes are provided with internal threads that match the external threads. The two plugs are installed in the corresponding sand-cleaning holes by mutual cooperation of the external threads and internal threads. The removable cooling plate is also equipped with two eye bolts, the shanks of which are respectively matched with the internal threads on the inner walls of the corresponding sand-cleaning holes.

[0008] Typically, the cooling plate body is formed using conventional pure copper casting technology. The rear end face of the cooling plate body is also provided with water inlet and water outlet holes, which are connected to the water inlet end and water outlet end of the cooling channel, respectively.

[0009] The aforementioned eye bolt, as a type of fastener, includes an eye and a screw, which are forged as a single piece, with the eye located at the head of the screw.

[0010] When using the aforementioned cooling plate, the two plugs are installed in the corresponding sand-cleaning holes by interlocking their external and internal threads, thus sealing the sand-cleaning holes and ensuring a complete seal of the cooling channel. In this way, cooling water can smoothly enter the cooling channel through the inlet hole, circulate within the cooling plate, and then exit from the outlet hole, carrying away heat and effectively cooling the refractory brick lining.

[0011] When the cooling plate is damaged and needs to be repaired or replaced, the cooling plate needs to be removed. First, use appropriate tools to unscrew the two plugs out of the sand cleaning hole. Then, screw the rod of the lifting eye screw directly into the sand cleaning hole so that the lifting eye screw is connected to the rear end face of the cooling plate body. Then, use a jack or puller to hook the lifting lug and the two lifting eye screws to pull the cooling plate out of the blast furnace.

[0012] Since a blast furnace requires thousands of cooling plates for cooling, the eye bolts do not need to be installed on each cooling plate when they are in use. They are only needed when the cooling plate is damaged and needs to be repaired or replaced. Therefore, the number of eye bolts does not need to be large. Only a certain number of eye bolts are needed as spares, which can save materials and manufacturing costs.

[0013] In the preferred embodiment, a steel sleeve is fitted around the rear of the cooling plate body, with the inner wall of the sleeve tightly fitting the outer wall of the cooling plate body. When the cooling plate is to be installed at the waist of the blast furnace, the steel sleeve can be directly welded to the furnace shell, thus achieving steel-to-steel welding between the cooling plate and the furnace shell, effectively avoiding the difficulties of copper-to-steel welding and improving welding quality. Before removing the cooling plate from the blast furnace, simply remove the weld between the steel sleeve and the furnace shell, and then use a jack or puller to pull the cooling plate along with the steel sleeve out of the furnace shell.

[0014] In a further preferred embodiment, the front end face of the steel sleeve is connected to the outer wall of the cooling plate body through a first annular weld, and the rear end face of the steel sleeve is connected to the outer wall of the cooling plate body through a second annular weld.

[0015] Compared with the prior art, this utility model has the following advantages:

[0016] This invention cleverly utilizes the pre-reserved sand-cleaning holes in the casting process of the cooling plate. Internal threads are machined on the inner wall of these holes, and the connection between the plug and the sand-cleaning hole is designed as a threaded connection. The connection between the eye bolt and the sand-cleaning hole is also designed as a threaded connection, making the disassembly and installation of the plug more convenient and simplifying the maintenance of the cooling plate. Adding two more eye bolts before disassembling the cooling plate increases the number of pull-out points, dispersing the force on the rear end face of the cooling plate and making the force more even. This prevents excessive force concentration on the lifting lugs and body at the center of the rear end face of the cooling plate, preventing deformation of the lifting lugs and body during the pull-out process and facilitating subsequent maintenance of the cooling plate. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a conventional cooling plate in the background technology of this utility model;

[0018] Figure 2 This is a structural schematic diagram of an embodiment of the present utility model;

[0019] Figure 3 yes Figure 2 The left view;

[0020] Figure 4 It is Figure 2 A schematic diagram showing the replacement of the center plug with a lifting eye screw;

[0021] Figure 5 yes Figure 4 Cross-sectional view of AA. Detailed Implementation

[0022] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0023] like Figure 2-5As shown, the easily detachable cooling plate in this embodiment includes a cooling plate body 1, a lifting lug 2, and two plugs 3. The cooling plate body 1 has a cooling channel 11 inside, and two sand-cleaning holes 12 with a front-to-back orientation are provided on the rear end face 10 of the cooling plate body 1. Both sand-cleaning holes 12 are connected to the cooling channel 11. The lifting lug 2 is installed at the center of the rear end face of the cooling plate body 1, and the lifting lug 2 is located in the middle of the two sand-cleaning holes 12. The outer walls of the two plugs 3 are provided with external threads 31, and the inner walls of the two sand-cleaning holes 12 are provided with internal threads 121 that match the external threads 31. The two plugs 3 are respectively installed in the corresponding sand-cleaning holes 12 through mutual cooperation of the external threads 31 and the internal threads 121. The easily detachable cooling plate is also equipped with two eye bolts 4, and the shanks of the two eye bolts 4 are respectively matched with the internal threads 121 on the inner walls of the corresponding sand-cleaning holes 12.

[0024] Typically, the cooling plate body 1 is formed using a conventional pure copper casting process. The rear end face 10 of the cooling plate body 1 is also provided with a water inlet hole 13 and a water outlet hole 14, which are respectively connected to the water inlet end and the water outlet end of the cooling channel 11.

[0025] When the aforementioned cooling plate is in use, the two plugs 3 are respectively installed in the corresponding sand-cleaning holes 12 through the mutual engagement of the external thread 31 and the internal thread 121, so that the plugs 3 seal the sand-cleaning holes 12 and the cooling channel 11 is completely sealed. In this way, the cooling water can smoothly enter the cooling channel 11 through the water inlet hole 13, circulate inside the cooling plate, and be discharged from the water outlet hole 14, carrying away heat and thus effectively cooling the refractory brick lining.

[0026] When the cooling plate is damaged and needs to be repaired or replaced, the cooling plate needs to be disassembled. First, use appropriate tools to unscrew the two plugs 3 out of the sand cleaning hole 12. Then, screw the rod of the lifting eye screw 4 directly into the sand cleaning hole 12 so that the lifting eye screw 4 is connected to the rear end face of the cooling plate body 1. Then, use a jack device or puller device to hook the lifting lug 2 and the two lifting eye screws 4 to pull the cooling plate out of the blast furnace.

[0027] Since a blast furnace requires thousands of cooling plates for cooling, the eye bolts 4 do not need to be installed on each cooling plate when they are in use. The eye bolts 4 are only needed when the cooling plate is damaged and needs to be repaired or replaced. Therefore, the number of eye bolts 4 does not need to be prepared in large quantities. Only a certain number of eye bolts 4 are needed as spares, which can save materials and manufacturing costs.

[0028] A steel sleeve 5 is fitted onto the rear of the cooling plate body 1, with the inner wall of the steel sleeve 5 tightly fitting the outer wall of the cooling plate body 1. When the cooling plate is to be installed at the blast furnace waist position, the steel sleeve 5 can be directly welded to the furnace shell, thus achieving steel-to-steel welding between the cooling plate and the furnace shell, effectively avoiding the difficulties of copper-to-steel welding and improving welding quality. Before removing the cooling plate from the blast furnace waist position, simply remove the weld between the steel sleeve 5 and the furnace shell, and then use a jack or puller to pull the cooling plate along with the steel sleeve 5 out of the furnace shell.

[0029] The front end face of the steel sleeve 5 is connected to the outer wall of the cooling plate body 1 through the first annular weld 6, and the rear end face of the steel sleeve 5 is connected to the outer wall of the cooling plate body 1 through the second annular weld 7.

[0030] Furthermore, it should be noted that the names of the various parts of the specific embodiments described in this specification may differ. All equivalent or simple variations made to the structure, features, and principles described in this utility model patent concept are included within the protection scope of this utility model patent. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, as long as they do not deviate from the structure of this utility model or exceed the scope defined in these claims, they should all fall within the protection scope of this utility model.

Claims

1. A detachable cooling plate, comprising a cooling plate body, a lifting lug, and two plugs, wherein the cooling plate body has a cooling channel inside, and two sand-cleaning holes running in a front-to-back direction are provided on the rear end face of the cooling plate body, both of which communicate with the cooling channel; the lifting lug is installed at the center of the rear end face of the cooling plate body, and the lifting lug is located between the two sand-cleaning holes; characterized in that: Both plugs have external threads on their outer walls, and both sand-cleaning holes have internal threads that match the external threads on their inner walls. The two plugs are installed in the corresponding sand-cleaning holes by the mutual engagement of the external and internal threads. The easily removable cooling plate is also equipped with two eye bolts, the shanks of which match the internal threads on the inner walls of the corresponding sand-cleaning holes.

2. The easily detachable cooling plate as described in claim 1, characterized in that: A steel sleeve is fitted around the rear of the cooling plate body, and the inner wall of the steel sleeve fits tightly with the outer wall of the cooling plate body.

3. The easily detachable cooling plate as described in claim 2, characterized in that: The front end face of the steel sleeve is connected to the outer wall of the cooling plate body through a first annular weld, and the rear end face of the steel sleeve is connected to the outer wall of the cooling plate body through a second annular weld.

Images