Four-hole graphite sleeve

Abstract

The utility model belongs to the technical field of graphite sleeves, and particularly relates to a four-hole graphite sleeve which comprises a graphite sleeve splicing body, the inner end and the outer end of the graphite sleeve splicing body are connected with a splicing mechanism, the splicing mechanism comprises a splicing unit and a heat preservation unit, the splicing unit is arranged at the outer end of the graphite sleeve splicing body, and the heat preservation unit is arranged at the outer end of the graphite sleeve splicing body. The heat preservation unit is arranged at the outer end of the graphite sleeve splicing body. When the four-hole graphite sleeve is used, firstly, the four graphite sleeve splicing bodies are spliced with one another in an equal-radian mode, then, the lower fixing sleeve and the upper fixing sleeve are placed on the outer sides of the graphite sleeve splicing bodies, meanwhile, after the upper side plate penetrates through the threaded rod, the lantern ring is in threaded connection to the outer side of the threaded rod, and after the lower side of the lantern ring makes contact with the upper side of the upper side plate, the lower side of the lantern ring is in threaded connection with the outer side of the threaded rod. And the lower fixing sleeve and the upper fixing sleeve are fixed to the outer sides of the graphite sleeve splicing bodies making contact with each other, overall splicing of the graphite sleeves is completed, and then casting work of the bar is conducted.

Description

Technical Field

[0001] The utility model relates to the technical field of graphite sleeves, in particular to a four-hole graphite sleeve. Background Art

[0002] The method of directly making rods and tubes from molten copper alloy or cast iron is called continuous casting, and the graphite used is called continuous casting graphite, which is called continuous graphite. Graphite material has excellent properties such as high temperature resistance, oxidation resistance, chemical corrosion resistance, self-lubrication and thermal conductivity, and is the most ideal material for making crystallizers. It is generally believed that graphite crystallizers (also known as continuous casting graphite) have many advantages over metal crystallizers, such as not being corroded by molten metal, low friction coefficient when the casting moves, easy processing, no cold shut on the casting surface (especially when continuously casting large flat copper parts), and no need to process the casting surface, so many manufacturers at home and abroad have attached great importance to the research and production of continuous casting graphite.

[0003] The existing graphite sleeve (ie continuous casting graphite) has always been produced using 1-2 rod traction holes. When producing small-section rods, especially round rods with a cross-sectional size of less than 17 mm, the output cannot keep up with the smelting speed and the output is limited.

[0004] For example, a four-hole graphite sleeve disclosed in Chinese patent CN202655587U is provided with four rod traction holes that penetrate the graphite sleeve, which can improve production efficiency, meet production needs, and synchronize production volume with smelting speed; the rod traction holes are evenly arranged on the graphite rod, and the mechanical properties are similar, ensuring stable product quality; the setting of the epoxy resin coating on the inner wall of the rod traction hole, when the graphite sleeve continuously casts the rod, the lubrication effect of the inner wall is good, and the production process does not require engine oil for cooling and lubrication, reducing the consumption of engine oil and the pollution caused by engine oil.

[0005] However, the four-hole graphite sleeve is an integral unit and cannot be disassembled, so when impurities are attached to the rod traction holes and affect the casting work, it is not convenient to clean the inner side of the rod traction holes.

[0006] For this reason, we urgently need to provide a four-hole graphite sleeve that is easy to disassemble. Utility Model Content

[0007] The utility model aims to provide a four-hole graphite sleeve to solve the problem that the four-hole graphite sleeve proposed in the above background technology is a whole and cannot be disassembled, so when impurities are attached to the rod traction hole and affect the casting work, it is not convenient to clean the inner side of the rod traction hole.

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a four-hole graphite sleeve, comprising a graphite sleeve splicing body, wherein the inner and outer ends of the graphite sleeve splicing body are connected with a splicing mechanism, wherein the splicing mechanism comprises a splicing unit and a heat preservation unit, wherein the splicing unit is arranged at the outer end of the graphite sleeve splicing body, and the heat preservation unit is arranged at the outer end of the graphite sleeve splicing body.

[0009] The splicing unit includes a lower fixing sleeve, a lower side plate, a threaded rod, a collar, an upper fixing sleeve and an upper side plate, wherein the lower fixing sleeve is connected to the lower end of the outer side of the graphite sleeve splicing body, the lower side plate is fixedly connected to the upper left and right ends of the outer side of the lower fixing sleeve, the threaded rod is fixedly connected to the middle position of the upper side of the lower side plate, the collar is connected to the outer side of the threaded rod, the upper fixing sleeve is connected to the upper end of the outer side of the graphite sleeve splicing body, and the upper side plate is connected to the outer end of the threaded rod.

[0010] A further improvement is that a circular hole is opened in the middle of the upper side plate, and the outer side of the lower side plate is slidably connected to the inner side of the circular hole. Therefore, when the upper fixing sleeve is placed on the upper end of the outer side of the graphite sleeve splicing body, the upper side plates at the left and right ends thereof will pass through the threaded rod and move to the upper side of the lower side plate, thereby limiting the moving trajectory of the upper fixing sleeve when connected.

[0011] A further improvement is that the inner side of the collar is provided with an inner thread, the outer side of the threaded rod is threadedly connected to the inner side of the collar, the lower side of the collar abuts against the upper side of the upper side plate, the inner side of the lower fixed sleeve abuts against the lower end of the outer side of the spliced ​​graphite sleeve splicing body, and the inner side of the upper fixed sleeve abuts against the upper end of the outer side of the spliced ​​graphite sleeve splicing body. Thus, after the upper fixed sleeve is placed on the upper end of the outer side of the graphite sleeve splicing body, and the upper side plate passes through the threaded rod and contacts the lower side plate, the collar is threadedly connected to the outer side of the threaded rod until the lower side of the collar contacts the upper side of the upper side plate, so that the upper fixed sleeve and the lower fixed sleeve can be fixed to the outer side of the spliced ​​graphite sleeve splicing body, so that the graphite sleeve splicing bodies that are in contact with each other are relatively fixed, thereby completing the splicing of the graphite sleeve splicing body.

[0012] A further improvement is that a semicircular groove is provided in the middle of the side of the graphite sleeve splicing body that contacts other graphite sleeve splicing bodies when splicing. Therefore, after the four graphite sleeve splicing bodies are spliced ​​together, the semicircular groove on the outside thereof and the semicircular groove on the outside of the contacting graphite sleeve splicing body can form a complete circular hole.

[0013] A further improvement is that the insulation unit includes an insulation layer and a ceramic insulation layer, the insulation layer is fixedly connected to one side of the insulation layer at an arc-shaped outer end, and the ceramic insulation layer is fixedly connected to one side of the insulation layer away from the graphite sleeve splicing body.

[0014] A further improvement is that the heat-insulating layer is made of aluminum silicate. The heat-insulating layer arranged at the outer end of the graphite sleeve splicing body can keep the graphite sleeve splicing body warm, thereby improving product quality and extending the service life of the graphite sleeve.

[0015] A further improvement is that an epoxy resin coating is fixedly connected to the inner side of the semicircular groove at the outer end of the graphite sleeve splicing body, so that when the graphite sleeve is continuously cast into rods, the lubrication effect of the inner wall is good.

[0016] In summary, the present application discloses a four-hole graphite sleeve.

[0017] The technical solution is to remove the collar from the outside of the threaded rod by rotating it, and then remove the lower fixing sleeve and the upper fixing sleeve from the outside of the mutually spliced ​​graphite sleeve splicing body, so that the graphite sleeve splicing body can be separated and the inner side of the semicircular groove can be cleaned.

[0018] Furthermore, by providing the insulation layer and the ceramic insulating layer outside the graphite sleeve assembly, the graphite sleeve assembly can be insulated, thereby improving product quality, extending the service life of the graphite sleeve, and preventing external static electricity from being transferred to the graphite sleeve assembly to affect the casting work. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the main structure of the utility model;

[0020] Figure 2 It is a structural schematic diagram of the splicing unit of the utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the graphite sleeve splicing body of the utility model;

[0022] Figure 4 It is a schematic diagram of the structure of the graphite sleeve splicing body of the utility model when being separated.

[0023] In the figure: 1. Graphite sleeve splicing body; 201. Lower fixed sleeve; 202. Lower side plate; 203. Threaded rod; 204. Ring; 205. Upper fixed sleeve; 206. Upper side plate; 301. Insulation layer; 302. Ceramic insulation layer; 4. Epoxy resin coating. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-Figure 4 , the utility model provides a technical solution:

[0026] Embodiment 1:

[0027] A four-hole graphite sleeve comprises a graphite sleeve splicing body 1. The inner and outer ends of the graphite sleeve splicing body 1 are connected with a splicing mechanism. The splicing mechanism comprises a splicing unit and a heat preservation unit. The splicing unit is arranged at the outer end of the graphite sleeve splicing body 1. The heat preservation unit is arranged at the outer end of the graphite sleeve splicing body 1.

[0028] The splicing unit includes a lower fixed sleeve 201, a lower side plate 202, a threaded rod 203, a ring 204, an upper fixed sleeve 205 and an upper side plate 206. The lower fixed sleeve 201 is connected to the lower end of the outer side of the graphite sleeve splicing body 1, the lower side plate 202 is fixedly connected to the upper left and right ends of the outer side of the lower fixed sleeve 201, the threaded rod 203 is fixedly connected to the upper middle position of the lower side plate 202, the ring 204 is connected to the outer side of the threaded rod 203, the upper fixed sleeve 205 is connected to the upper end of the outer side of the graphite sleeve splicing body 1, and the upper side plate 206 is connected to the outer end of the threaded rod 203.

[0029] A circular hole is provided in the middle of the upper side plate 206, and the outer side of the lower side plate 202 is slidably connected to the inner side of the circular hole. Therefore, when the upper fixing sleeve 205 is placed on the upper end of the outer side of the graphite sleeve assembly 1, the upper side plates 206 at the left and right ends thereof will pass through the threaded rods 203 and move to the upper side of the lower side plate 202, thereby limiting the moving trajectory of the upper fixing sleeve 205 when connected.

[0030] An internal thread is provided on the inner side of the collar 204, the outer side of the threaded rod 203 is threadedly connected to the inner side of the collar 204, the lower side of the collar 204 abuts against the upper side of the upper plate 206, the inner side of the lower fixed sleeve 201 abuts against the outer lower end of the spliced ​​graphite sleeve splicing body 1, and the inner side of the upper fixed sleeve 205 abuts against the outer upper end of the spliced ​​graphite sleeve splicing body 1. Therefore, after the upper fixing sleeve 205 is placed on the upper end of the outer side of the graphite sleeve splicing body 1 and the upper side plate 206 passes through the threaded rod 203 and contacts the lower side plate 202, the ring 204 is threadedly connected to the outer side of the threaded rod 203 until the lower side of the ring 204 contacts the upper side of the upper side plate 206. Then, the upper fixing sleeve 205 and the lower fixing sleeve 201 can be fixed to the outer side of the spliced ​​graphite sleeve splicing body 1, so that the graphite sleeve splicing bodies 1 that are in contact with each other are relatively fixed, thereby completing the splicing of the graphite sleeve splicing body 1.

[0031] When the graphite sleeve splicing body 1 is spliced, a semicircular groove is provided in the middle of the side that contacts with other graphite sleeve splicing bodies 1. Therefore, after the four graphite sleeve splicing bodies 1 are spliced ​​with each other, the semicircular groove on the outside thereof and the semicircular groove on the outside of the contacting graphite sleeve splicing body 1 can form a complete circular hole.

[0032] Embodiment 2:

[0033] On the basis of the first embodiment: the heat preservation unit includes a heat preservation layer 301 and a ceramic insulation layer 302, the heat preservation layer 301 is fixedly connected to the arc-shaped side of the outer end of the heat preservation layer 301, and the ceramic insulation layer 302 is fixedly connected to the side of the heat preservation layer 301 away from the graphite sleeve assembly 1. The heat preservation layer 301 is made of aluminum silicate. The heat preservation layer 301 arranged at the outer end of the graphite sleeve assembly 1 plays a role in heat preservation for the graphite sleeve assembly 1, thereby improving the product quality and extending the service life of the graphite sleeve.

[0034] Embodiment three:

[0035] On the basis of the first embodiment: the inner side of the semicircular groove at the outer end of the graphite sleeve assembly 1 is fixedly connected with an epoxy resin coating 4. Thus, when the graphite sleeve is continuously cast into rods, the lubrication effect of the inner wall is good.

[0036] Working principle: When in use, firstly, four graphite sleeve splicing bodies 1 are spliced ​​with equal arcs, and then the lower fixed sleeve 201 and the upper fixed sleeve 205 are placed on the outside of the graphite sleeve splicing body 1, and at the same time, the upper side plate 206 passes through the threaded rod 203, and then the ring 204 is threadedly connected to the outside of the threaded rod 203, until the lower side of the ring 204 contacts the upper side of the upper side plate 206, and then the lower fixed sleeve 201 and the upper fixed sleeve 205 are fixed to the outside of the mutually contacting graphite sleeve splicing body 1, completing the overall splicing of the graphite sleeve, and then the casting of the rod is carried out.

[0037] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

Claims

1. A four-hole graphite sleeve, comprising a graphite sleeve assembly (1), characterized in that: The inner and outer ends of the graphite sleeve splicing body (1) are connected with a splicing mechanism, the splicing mechanism comprises a splicing unit and a heat preservation unit, the splicing unit is arranged at the outer end of the graphite sleeve splicing body (1), and the heat preservation unit is arranged at the outer end of the graphite sleeve splicing body (1); The splicing unit comprises a lower fixing sleeve (201), a lower side plate (202), a threaded rod (203), a collar (204), an upper fixing sleeve (205) and an upper side plate (206); the lower fixing sleeve (201) is connected to the lower end of the outer side of the graphite sleeve splicing body (1); the lower side plate (202) is fixedly connected to the upper left and right ends of the outer side of the lower fixing sleeve (201); the threaded rod (203) is fixedly connected to the middle position of the upper side of the lower side plate (202); the collar (204) is connected to the outer side of the threaded rod (203); the upper fixing sleeve (205) is connected to the upper end of the outer side of the graphite sleeve splicing body (1); and the upper side plate (206) is connected to the outer end of the threaded rod (203).

2. A four-hole graphite sleeve according to claim 1, characterized in that: A circular hole is provided in the middle of the upper side plate (206), and the outer side of the lower side plate (202) is slidably connected to the inner side of the circular hole.

3. A four-hole graphite sleeve according to claim 1, characterized in that: The inner side of the sleeve (204) is provided with an internal thread, the outer side of the threaded rod (203) is threadedly connected to the inner side of the sleeve (204), the lower side of the sleeve (204) is in contact with the upper side of the upper plate (206), the inner side of the lower fixed sleeve (201) is in contact with the lower end of the outer side of the spliced ​​graphite sleeve splicing body (1), and the inner side of the upper fixed sleeve (205) is in contact with the upper end of the outer side of the spliced ​​graphite sleeve splicing body (1).

4. A four-hole graphite sleeve according to claim 1, characterized in that: A semicircular groove is provided at the middle position of the side of the graphite sleeve splicing body (1) that contacts other graphite sleeve splicing bodies (1) when spliced.

5. The four-hole graphite sleeve according to claim 1, characterized in that: The thermal insulation unit comprises a thermal insulation layer (301) and a ceramic insulation layer (302); the thermal insulation layer (301) is fixedly connected to a side of the thermal insulation layer (301) at an outer end that is in an arc shape; and the ceramic insulation layer (302) is fixedly connected to a side of the thermal insulation layer (301) that is away from the graphite sleeve splicing body (1).

6. A four-hole graphite sleeve according to claim 5, characterized in that: The thermal insulation layer (301) is made of aluminum silicate.

7. A four-hole graphite sleeve according to claim 1, characterized in that: An epoxy resin coating (4) is fixedly connected to the inner side of the semicircular groove at the outer end of the graphite sleeve splicing body (1).

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