Cast pipe molten iron slagging-off tool

Abstract

The utility model discloses a cast pipe molten iron slagging-off tool. A slagging-off rake body is provided with a fan-shaped cambered surface plate and a recovery plate; the fan-shaped cambered surface plate is a part of the side surface of the circular truncated cone, and the small end surface is connected with the connecting plate; the recovery plate is one part of the other circular truncated cone side surface; the large end face of the circular truncated cone side face of the fan-shaped cambered surface plate is connected with the large end face of the recovery plate in an equal-arc-length mode. By the adoption of the technical scheme, the main body structure of the slagging-off tool is changed into the rake structure from a flat plate, and slagging-off is facilitated; the graphite rake is installed on the handle through a welding method, it is guaranteed that the graphite rake is firmly installed and durable, the slagging-off effect is better, and the service life is prolonged; the slagging-off tool is made of graphite instead of a steel plate, is not easy to melt in the slagging-off process, is more durable and lighter than a steel rake, has a good slag locking effect in the slagging-off process, and enables dross on the surface of molten iron to be removed more cleanly.

Description

Technical Field

[0001] This utility model belongs to the technical field of cast iron pipe production process. More specifically, this utility model relates to a slag removal tool for molten iron in cast iron pipes. Background Technology

[0002] In the production of lost foam casting pipe fittings, the effectiveness of slag removal from molten iron directly affects the appearance quality of the pipe fittings and the first-time pressure test pass rate.

[0003] like Figure 1 As shown, the current slag removal tool for molten iron is made of welded steel plates. Due to the material, the tool melts or becomes heavily sticky with slag after 8-12 hours of use and cannot be used anymore. Furthermore, the steel plate is heavy and flat, resulting in an unsatisfactory slag removal effect.

[0004] Using keywords such as "casting; pipe; molten iron; slag removal", a search was conducted on existing publicly available technical documents, yielding the following results:

[0005] 1. Chinese patent document: "A slag removal mechanism and method for molten iron in an electric furnace", patent (application) number: 201911237632.9; the technical solution described therein is:

[0006] "The slag removal mechanism includes an insulated housing, a linkage structure, a drive mechanism, and a bucket. The insulated housing is equipped with a lifting ring for connecting a crane. The linkage structure is disposed in the insulated housing, with its input end hinged to the output end of the drive mechanism, and the bucket connected to the output end of the linkage structure. The linkage structure includes a first movable rod, a second movable rod, a third movable rod, and a fourth movable rod, with the second movable rod and the fourth movable rod hinged to the insulated housing."

[0007] The technical effects described are:

[0008] "The second and fourth movable rods are hinged to the heat-insulating box, which limits the range of motion of the bucket and improves the stability of the bucket in slag removal; the slag removal mechanism is connected to the crane, which increases the operational safety of the slag removal mechanism; and the reliable linkage structure allows it to work reliably in high-temperature operating environments."

[0009] 2. Chinese patent document: "An automatic slag removal device for molten iron ladle", patent (application) number: 202222752853.3; the technical solution described therein is:

[0010] The utility model relates to an automatic slagging device for a ladle, belonging to the technical field of metallurgical casting, comprising a telescopic oil cylinder arranged on a workbench through a rotating shaft, a slagging rod fixedly connected to the telescopic end of the telescopic oil cylinder, a slag rake arranged at the other end of the slagging rod, the rod part of the slagging rod arranged between two vertically arranged supporting rollers, and the two supporting rollers fixedly arranged at the lifting end of a lifting oil cylinder.

[0011] The technical effect thereof is:

[0012] The utility model discloses a simple structure, low production cost, convenient operation, is used to the automatic cleaning of the liquid level dross of the ladle, greatly reduces the labor intensity of the operator, avoids the security hidden danger, through the cooperation of the lifting oil cylinder and the telescopic oil cylinder, can automatically clean the liquid level dross of the ladle, adopts the supporting roller to support the rod part of the slagging rod, reduces the friction of the telescopic process, reduces the equipment loss.

[0013] However, the technical scheme disclosed in the above technical document and the existing related technical scheme in the prior art cannot solve the problems and defects of short service life and unsatisfactory slagging effect in the prior art. Practical new type content

[0014] The utility model provides a cast pipe molten iron slagging tool, and the purpose is to improve the effect of cast pipe molten iron slagging.

[0015] In order to realize the above-mentioned purpose, the utility model takes the technical scheme that:

[0016] The cast pipe molten iron slagging tool of the utility model, including the slagging rake body and the slagging rod, the slagging rake body is equipped with the fan-shaped arc panel and the recovery board, the fan-shaped arc panel is a part of the side of the circular truncated cone, and the small end surface is connected with the connecting plate, the slagging rake body is connected with the slagging rod through the connecting plate, the recovery board is a part of the side of another circular truncated cone, the large end surface of the fan-shaped arc panel circular truncated cone side is connected with the large end surface of the recovery board, the generatrix length of the fan-shaped arc panel circular truncated cone side is greater than the generatrix length of the recovery board circular truncated cone side, and the top cone angle angle of the fan-shaped arc panel circular truncated cone side is less than the top cone angle angle of the recovery board circular truncated cone.

[0017] The material of the slagging rake body is graphite.

[0018] The connecting plate is provided with a slagging rod connecting seat and is fastenedly connected, the slagging rod connecting seat is provided with a connecting hole, and one end of the slagging rod is inserted into the connecting hole and is fastenedly connected.

[0019] The hole diameter of the connecting hole and the main body diameter of the slagging rod are both 30mm.

[0020] The slagging rod and the upper and lower bottom surfaces of the fan-shaped arc panel circular truncated cone are parallelly distributed.

[0021] The projection angle of the fan-shaped arc panel fan shape on the large end surface of the circular truncated cone is 90°.

[0022] The radius of the large end surface of the circular truncated cone of the fan-shaped arc panel is 252mm, and the radius of the small end surface of the circular truncated cone is 100mm.

[0023] The generatrix length of the circular truncated cone side surface of the fan-shaped arc panel is 132mm; and the generatrix length of the circular truncated cone side surface of the recycling panel is 37mm.

[0024] The other end of the slag scraping rod is provided with a handle, and the surface of the handle is provided with a knurled rough surface.

[0025] The angle between the generatrix of the circular truncated cone side surface of the fan-shaped arc panel and the bottom surface of the circular truncated cone is 30°; and the angle between the generatrix of the circular truncated cone side surface of the recycling panel and the bottom surface is 60°.

[0026] The slag scraping tool main body structure is changed from a flat plate to a rake structure, so that the slag is scraped conveniently; the graphite rake is installed on the handle by welding, so that the graphite rake is installed firmly and durably, the slag scraping effect is better, and the service life is prolonged; the material of the slag scraping tool is changed from a steel plate to graphite, so that the slag is not easy to melt during the slag scraping process, the graphite rake is more durable than the steel rake, and the weight is light, the slag locking effect is good during the slag scraping process, and the floating slag on the molten iron surface is scraped more cleanly. BRIEF DESCRIPTION OF DRAWINGS

[0027] The contents shown in the drawings and the marks in the drawings are briefly described as follows:

[0028] Figure 1 It is a structure schematic view of the slag scraping tool described in the background art;

[0029] Figure 2 It is a structure schematic view of the utility model;

[0030] Figure 3 It is Figure 2 The left view schematic view of the structure shown;

[0031] Figure 4 It is Figure 2 The top view schematic view of the structure shown;

[0032] Figure 5 It is Figure 3 The C-C sectional view in the figure;

[0033] Figure 6 It is Figure 2 The three-dimensional modeling view of the structure shown (without installing the slag scraping rod).

[0034] The marks in the figure are:

[0035] 1, slag rake body, 2, connecting plate, 3, fan-shaped arc plate, 4, recycling plate, 5, slag rake connecting seat, 6, connecting hole, 7, slag rake. DETAILED DESCRIPTION

[0036] The specific embodiments of the present application are further described in detail below with reference to the drawings, and the description of the embodiments is to help the skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the present application.

[0037] As Figures 2 to 6 The present application is a graphite rake for cleaning the floating slag on the surface of the molten iron in the casting pipe, which comprises a slag rake body 1 and a slag rake 7.

[0038] In order to solve the problems existing in the prior art and overcome its defects, and achieve the purpose of improving the effect of casting pipe molten iron slagging, the technical scheme adopted by the present application is:

[0039] As Figure 2 and Figure 6 The present application is a graphite rake for cleaning the floating slag on the surface of the molten iron in the casting pipe, which comprises a slag rake body 1 and a slag rake 7.

[0040] The fan-shaped arc plate 3 is a part of the side surface of a circular truncated cone, and the small end surface thereof is connected with the connecting plate 2; the slag rake body 1 is connected with the slag rake 7 through the connecting plate 2; and the recycling plate 4 is a part of the side surface of another circular truncated cone.

[0041] The large end surface of the side surface of the circular truncated cone of the fan-shaped arc plate 3 is connected with the large end surface of the recycling plate 4 with the same arc length.

[0042] The generatrix length of the side surface of the circular truncated cone of the fan-shaped arc plate 3 is greater than the generatrix length of the side surface of the circular truncated cone of the recycling plate 4.

[0043] The top cone angle of the circular truncated cone of the fan-shaped arc plate 3 is smaller than the top cone angle of the circular truncated cone of the recycling plate 4.

[0044] The slagging part of the graphite rake is designed as an inwardly curved arc structure, which has good slag locking effect and high slagging efficiency during the slagging process, and is convenient for slagging the floating slag near the wall of the ladle.

[0045] The slagging tool structure of the present application is optimally designed, and the main structure of the slagging tool is changed from a flat plate to a rake structure, which is more conducive to the gathering of the floating slag and will not be scattered, thereby facilitating the molten iron slagging.

[0046] The material of the slag rake body 1 is graphite. That is, the material of the slagging tool is changed from a steel plate to graphite.

[0047] The melting point of graphite is 3652℃, much higher than that of iron, so the graphite rake is not easy to melt during slagging, is more durable than the iron rake, and has a service life 6 times that of the iron rake, so its use cost is lower.

[0048] The density of graphite is much smaller than that of iron, and the single weight of the graphite rake is only one fifth of that of the iron rake, so the graphite rake is more agile and convenient during slagging, effectively reducing the physical exertion of the slagging workers.

[0049] The structure of the graphite slagging rake is optimized, and the slag locking effect is good during slagging, so that the floating slag on the surface of the molten iron is removed more cleanly. After using the graphite slagging rake, the one-off pass rate of the lost foam pipe is increased by about 3 percentage points.

[0050] As shown in Figure 2 , Figure 3 and Figure 5 :

[0051] The connecting plate 2 is provided with a slagging rod connecting seat 5 and is tightly connected with the slagging rod connecting seat 5; the slagging rod connecting seat 5 is provided with a connecting hole 6, and one end of the slagging rod 7 is inserted into the connecting hole 6 and is tightly connected with the connecting hole 6.

[0052] The graphite rake is installed on the handle by welding, so that the graphite rake is firmly and durably installed.

[0053] The specific structure and the optimized technical parameters of the utility model:

[0054] The diameter of the connecting hole 6 and the main body diameter of the slagging rod 7 are both 30mm.

[0055] The other end of the slagging rod 7 is provided with a handle, and the surface of the handle is provided with a knurled rough surface.

[0056] Therefore, the operator holds the slagging tool more conveniently and firmly.

[0057] As shown in Figure 2 :

[0058] The slagging rod 7 is parallelly distributed with the upper and lower bottom surfaces of the circular truncated cone of the fan-shaped curved surface plate 3.

[0059] As shown in Figure 4 :

[0060] The projection angle of the fan shape of the fan-shaped curved surface plate 3 on the large end surface of the circular truncated cone is 90°.

[0061] The radius of the large end surface of the circular truncated cone of the fan-shaped curved surface plate 3 is 252mm, and the radius of the small end surface of the circular truncated cone is 100mm.

[0062] As shown in Figure 2 :

[0063] The generatrix length of the circular truncated cone side of the fan-shaped arc panel 3 is 132mm; and the generatrix length of the circular truncated cone side of the recycled panel 4 is 37mm.

[0064] As shown in Figure 5

[0065] The angle between the generatrix of the circular truncated cone side of the fan-shaped arc panel 3 and the bottom of the circular truncated cone is 30°; and the angle between the generatrix of the circular truncated cone side of the recycled panel 4 and the bottom is 60°.

[0066] The utility model has been described exemplarily above in combination with the drawings, and obviously, the utility model is not limited by the above-mentioned mode in the specific implementation, and various non-essential improvements adopting the method concept and technical scheme of the utility model or direct application of the concept and technical scheme of the utility model to other occasions without improvement are all within the protection scope of the utility model.​

Claims

1. A casting pipe pig, comprising a pig body (1) and a pig rod (7), characterized in that: The rake body (1) is provided with a fan-shaped arc panel (3) and a recovery panel (4); the fan-shaped arc panel (3) is a part of the side of a circular truncated cone, and the small end surface thereof is connected with the connecting plate (2); the rake body (1) is connected with the rake rod (7) through the connecting plate (2); the recovery panel (4) is a part of the side of another circular truncated cone; the large end surface of the fan-shaped arc panel (3) is connected with the large end surface of the recovery panel (4) at the same arc length; the generatrix length of the side of the fan-shaped arc panel (3) is greater than that of the recovery panel (4); and the angle of the top cone of the fan-shaped arc panel (3) is smaller than that of the recovery panel (4).

2. A casting tube ladle tool according to claim 1, characterized in that: The material of the rake body (1) is graphite.

3. The cast tube ladle tool of claim 1, wherein: The connecting plate (2) is provided with a rake rod connecting seat (5) and is fastened therewith; the rake rod connecting seat (5) is provided with a connecting hole (6), and one end of the rake rod (7) is inserted into the connecting hole (6) and is fastened therewith.

4. A casting tube ladle tool according to claim 3, wherein: The hole diameter of the connecting hole (6) and the main body diameter of the rake rod (7) are both 30 mm.

5. The cast tube ladle tool of claim 1, wherein: The rake rod (7) is parallel to the upper and lower bottom surfaces of the circular truncated cone of the fan-shaped arc panel (3).

6. The cast tube ladle tool of claim 1, wherein: The projection angle of the fan-shaped arc panel (3) on the large end surface of the circular truncated cone is 90°.

7. The cast tube ladle skimmer tool of claim 1, wherein: The radius of the large end surface of the circular truncated cone of the fan-shaped arc panel (3) is 252 mm, and the radius of the small end surface thereof is 100 mm.

8. The cast tube ladle skimmer tool of claim 1, wherein: The generatrix length of the side of the circular truncated cone of the fan-shaped arc panel (3) is 132 mm, and the generatrix length of the side of the circular truncated cone of the recovery panel (4) is 37 mm.

9. The cast tube ladle skimmer tool of claim 3, wherein: The other end of the rake rod (7) is provided with a handle, and the surface of the handle is provided with a knurled rough surface.

10. The cast tube ladle skimmer tool of claim 1 wherein: The angle between the generatrix of the side of the circular truncated cone of the fan-shaped arc panel (3) and the bottom surface thereof is 30°, and the angle between the generatrix of the side of the circular truncated cone of the recovery panel (4) and the bottom surface thereof is 60°.

Images