Stirring rod

Abstract

The utility model relates to the technical field of stirring equipment, and discloses a stirring rod which comprises a rod body, a stirring part is arranged at one end of the rod body, a cooling cavity is formed in the rod body, and at least partial area of the cooling cavity is opposite to the stirring part; the medium guide pipe is arranged in the cooling cavity, a through hole which penetrates through the pipe wall and can allow a cooling medium in the medium guide pipe to flow into the cooling cavity is formed in the end, close to the stirring rod, of the medium guide pipe, and the through hole is obliquely formed relative to the radial direction of the medium guide pipe, so that the cooling medium flowing out of the through hole annularly flows in the cooling cavity. Before and after the stirring process and in the stirring process, a cooling medium can be continuously introduced into the cooling cavity through the medium guide pipe, so that the temperature of the stirring rod is controlled within a proper range, the service life of the stirring rod is effectively prolonged, thermal stress generated in the using process of the stirring rod is reduced, the application cost of the stirring rod is reduced, and the production efficiency is improved; and the production cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of mixing equipment technology, specifically to a mixing rod. Background Technology

[0002] Mechanical stirring is the earliest and most commonly used semi-solid slurry preparation process for metals. By vigorously stirring the melt with a stirring rod, the dendrites formed during solidification are broken down and diffuse to form fine crystal nuclei, which are then uniformly dispersed throughout the melt, forming a semi-solid slurry. However, in continuous production, the durability of the stirring rod is generally low, often requiring replacement of several rods per day. Furthermore, the release of latent heat during metal solidification leads to a slow temperature drop, extending the production cycle and further accelerating the wear and tear on the stirring rods. Utility Model Content

[0003] This invention was made to solve the above-mentioned technical problems, and its purpose is to provide a stirring rod with high durability.

[0004] According to one embodiment of the present invention, a stirring rod is provided, comprising: a rod body, one end of which is a stirring part, and a cooling cavity formed therein with at least a portion of the stirring part opposite to the stirring part; a medium conduit disposed in the cooling cavity, wherein a through hole is formed at the end near the stirring rod, penetrating the pipe wall and allowing cooling medium in the medium conduit to flow into the cooling cavity, the through hole being radially inclined relative to the medium conduit, so that the cooling medium flowing out through the through hole flows in an annular manner in the cooling cavity.

[0005] In one embodiment, the end of the medium conduit is formed with one or more through holes along the axial direction, and the number of through holes in each group is one or more.

[0006] In one embodiment, the end of the medium conduit has three sets of through holes formed along the axial direction; each set has four through holes, and the four through holes are distributed in a ring in the conduit wall.

[0007] As one embodiment, it also includes: a stirring block, which is detachably disposed on the stirring part.

[0008] In one embodiment, the outer wall of the stirring block is formed with a plurality of recesses and / or protrusions.

[0009] In one embodiment, the cooling chamber is arranged along the axial direction of the rod, and an outlet for the cooling medium to flow out is formed at the upper end.

[0010] In one embodiment, the end of the medium conduit is close to the bottom of the cooling chamber, and there is a gap between the medium conduit and the cooling chamber.

[0011] In one embodiment, the end of the media conduit is closed.

[0012] In one embodiment, the rod is provided with a temperature sensor for detecting the surface temperature of the rod; the medium conduit is connected to a control valve; the temperature sensor and the control valve are connected to a control module that can keep the control valve open until the temperature detected by the temperature sensor is lower than a set value.

[0013] In one embodiment, the medium conduit is connected to an airflow generating device.

[0014] Based on the above description and practice, it can be seen that the stirring rod of this utility model can continuously introduce cooling medium into the cooling chamber through the medium conduit before, during, and after the stirring process, so that the temperature of the stirring rod is controlled within a suitable range, effectively improving the service life of the stirring rod, reducing the thermal stress generated during the use of the stirring rod, reducing the application cost of the stirring rod, improving production efficiency, and helping to reduce production costs.

[0015] In addition, the through hole at the end of the medium conduit, which is radially inclined relative to the medium conduit, allows the outflowing cooling medium to flow in an annular manner in the cooling chamber, increasing the time for heat exchange between the cooling medium and the rod, and significantly improving the cooling effect on the stirring rod. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the stirring rod involved in one embodiment of the present invention.

[0017] Figure 2 This is a schematic diagram of the lower end of the medium conduit in a stirring rod according to one embodiment of the present invention.

[0018] Figure 3 for Figure 2 A schematic diagram of the structure of section AA in the middle.

[0019] Figure 4 for Figure 2 A schematic diagram of the structure of the BB cross section.

[0020] Figure 5 This is a top view of the stirring block in a stirring rod according to one embodiment of the present invention.

[0021] The attached figures are labeled as follows:

[0022] 1. Rod body; 11. Stirring section; 12. Cooling chamber; 2. Medium conduit; 21. Through hole; 3. Stirring block; 31. Recess. Detailed Implementation

[0023] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be more comprehensive and complete, and will fully convey the concept of exemplary embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0024] Furthermore, the accompanying drawings are merely illustrative of this disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and therefore repeated descriptions of them will be omitted. It should be noted that in this disclosure, the terms "comprising," "configured with," and "set in" are used to indicate an open-ended inclusion, meaning that additional elements / components / etc. may exist besides those listed; the terms "first," "second," etc., are used only as labels and are not intended to limit the number or order of objects; the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation of this utility model.

[0025] Unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] According to one embodiment of this utility model, a stirring rod is provided; please refer to [reference needed]. Figures 1 to 5 The stirring rod includes a rod body 1 and a medium conduit 2.

[0027] One end of the rod 1 is a stirring section 11, within which a cooling chamber 12 is formed, at least partially opposite to the stirring section 11. For example... Figure 1 As shown, the stirring section 11 is located at the lower end of the rod body 1, and the stirring section 11 extends into the melt to be stirred during use. The cooling chamber 12 is located inside the rod body 1, and its lower end extends to a position close to the stirring section 11, which can cool the rod body 1, especially the area of ​​the stirring section 11, by means of a cooling medium.

[0028] The medium conduit 2 is disposed in the cooling chamber 12. A through hole 21 is formed at the end near the stirring rod, which penetrates the pipe wall and allows the cooling medium in the medium conduit 2 to flow into the cooling chamber 12. The through hole 21 is arranged radially inclined relative to the medium conduit 2, so that the cooling medium flowing out through the through hole 21 flows in an annular manner in the cooling chamber 12.

[0029] Please combine Figures 2 to 4 In this embodiment, the lower end of the medium conduit 2 has three sets of through holes 21 formed along the axial direction, with four through holes 21 in each set, and the four through holes 21 are distributed in a ring shape in the conduit wall. The through holes 21 are compared to... Figure 4 The radial direction of the medium is inclined to the left. After the cooling medium flowing out of the through-hole 21 enters the cooling chamber 12, it is blocked by the side wall of the cooling chamber 12 and will flow along... Figure 4 The medium rotates counterclockwise to fully exchange heat with the side wall of rod 1. By rotating, the time for heat exchange between the cooling medium and rod 1 is extended, thus improving the cooling effect on rod 1.

[0030] Before, during, and after the stirring process, the stirring rod can continuously supply cooling medium to the cooling chamber 12 through the medium conduit 2, so that the temperature of the stirring rod is controlled within a suitable range, effectively improving the service life of the stirring rod, reducing the thermal stress generated during the use of the stirring rod, reducing the application cost of the stirring rod, improving production efficiency, and helping to reduce production costs.

[0031] In addition, the through hole 21, which is radially inclined at the end of the medium conduit 2, allows the outflowing cooling medium to flow in an annular manner in the cooling chamber 12, increasing the time for heat exchange between the cooling medium and the rod 1, and significantly improving the cooling effect on the stirring rod.

[0032] It should be noted that this embodiment provides one specific setting for the number of through holes 21. In other embodiments, the user can adjust the number of through holes 21 according to the actual cooling requirements. By controlling the number of through holes 21, the flow rate of the cooling medium can be controlled, thereby controlling the cooling efficiency. For example, when the cooling requirement is relatively low, the number of through holes 21 can be reduced; when the cooling requirement is relatively high, the number of through holes 21 can be increased. Based on this, in other embodiments, one or more sets of the above-mentioned through holes 21 can be formed along the axial direction at the end of the medium conduit 2, with each set containing more than one through hole 21, thus achieving the aforementioned function of improving the cooling effect.

[0033] In this embodiment, the cooling chamber 12 is arranged along the axial direction of the rod body 1, and an outlet for the cooling medium to flow out is formed at its upper end. Figure 1As shown, the cooling chamber 12 is a blind hole axially arranged from the upper end of the rod 1 downwards. The end of the medium conduit 2 is close to the bottom of the cooling chamber 12, and there is a gap between the medium conduit 2 and the cooling chamber 12. The cooling medium can flow from the bottom of the cooling chamber 12 upwards to the upper end of the rod 1, resulting in excellent cooling effect. The cooling medium can be gas or liquid, etc. In this embodiment, an inert gas is selected as the cooling medium, which can avoid accidents such as liquid leakage and does not require recycling.

[0034] Furthermore, the bottom of the cooling chamber 12 is close to the lower end of the rod 1, resulting in excellent cooling effect.

[0035] In this embodiment, the end of the media conduit 2 is closed, i.e. Figure 3 The lower end shown is closed, and the cooling medium can only enter the cooling chamber 12 through the inclined through hole 21, which can improve the rotation effect of the cooling medium in the cooling chamber 12. Of course, in other embodiments, the end of the medium conduit 2 can also be open, so that the cooling medium can flow out from either the through hole 21 or the end of the medium conduit 2. While increasing the flow rate of the cooling medium, the cooling medium flowing out of the through hole 21 can also guide the cooling medium in the cooling chamber 12 to flow upward in a spiral shape, which can also improve the cooling effect to a certain extent compared to the cooling medium flowing out only from the end.

[0036] In this embodiment, a stirring block 3 is detachably connected to the stirring section 11 at the lower end of the rod body 1. During use, the stirring block 3 contacts the melt to perform stirring. On the one hand, the increased volume of the stirring block 3 can improve the stirring effect; on the other hand, the stirring block 3 can be replaced after it is worn away, avoiding the need to directly replace the rod body 1, thus reducing application costs. For example, the stirring block 3 can be threaded to the lower end of the rod body 1 or snapped onto the lower end of the rod body 1 to facilitate the installation and removal of the stirring block 3.

[0037] Furthermore, a number of recesses 31 and / or protrusions are formed on the outer side wall of the stirring block 3. By providing recesses 31 and / or protrusions, the surface area of ​​the stirring block 3 can be increased, the contact area with the melt can be increased, and the stirring and slurry preparation efficiency and cooling efficiency can be further improved.

[0038] In this embodiment, the medium conduit 2 is connected to a control valve to introduce cooling medium at appropriate times. The control valve can be controlled automatically or manually by a program. A temperature sensor is provided on the side of the rod 1 to detect the surface temperature of the rod 1, so as to monitor the surface temperature of the stirring rod in real time and control the opening of the control valve according to the surface temperature of the stirring rod. Specifically, the temperature sensor and the control valve are connected to a control module that keeps the control valve open until the temperature detected by the temperature sensor is lower than a set value. The set value can be a value such as 90 to 100 degrees Celsius. In specific applications, during the descent of the stirring rod after lateral movement, the control valve opens and cool medium is introduced into the stirring rod. After the stirring rod descends to its position, semi-solid pulping is performed. During the pulping process, cooling medium continuously passes through the stirring rod to cool it down in real time. After pulping is completed, the stirring rod returns to the cooling position, and the gas continues to cool the stirring rod until the outer surface temperature of the stirring rod reaches 90 to 100 degrees Celsius or below, at which point the supply of cooling medium to the stirring rod stops, and it returns to the standby position.

[0039] In one embodiment, the medium conduit 2 is connected to an airflow generating device, which can be an air pump or the like, to supply cooling gas to the stirring rod in real time.

[0040] As one implementation, the rod 1 can be made of materials such as graphite or heat-treated mold steel, with a hardness of up to 180 HRC. In specific applications, a heat-resistant coating can also be applied to the surface of the rod 1 to improve its wear resistance.

[0041] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A stirring rod, characterized in that, include: The rod has a stirring section at one end, and a cooling chamber is formed therein with at least a portion of the stirring section opposite to the stirring section. A medium conduit is disposed in the cooling chamber. A through hole is formed at the end near the stirring rod, which penetrates the pipe wall and allows the cooling medium in the medium conduit to flow into the cooling chamber. The through hole is arranged radially inclined relative to the medium conduit, so that the cooling medium flowing out through the through hole flows in an annular manner in the cooling chamber.

2. The stirring rod as described in claim 1, characterized in that, The end of the medium conduit has one or more through holes formed along the axial direction, and the number of through holes in each group is more than one.

3. The stirring rod as described in claim 2, characterized in that, The end of the medium conduit has three sets of through holes formed along the axial direction; Each group has four through holes, which are arranged in a ring shape within the pipe wall.

4. The stirring rod as described in claim 1, characterized in that, Also includes: A stirring block is detachably mounted on the stirring section.

5. The stirring rod as described in claim 4, characterized in that, The outer wall of the stirring block has several recesses and / or protrusions.

6. The stirring rod as described in claim 1, characterized in that, The cooling chamber is arranged along the axial direction of the rod, and an outlet for the cooling medium to flow out is formed at the upper end.

7. The stirring rod as described in claim 6, characterized in that, The end of the medium conduit is close to the bottom of the cooling chamber, and there is a gap between the medium conduit and the cooling chamber.

8. The stirring rod as described in claim 7, characterized in that, The end of the media conduit is closed.

9. The stirring rod as described in claim 1, characterized in that, The rod is equipped with a temperature sensor for detecting the surface temperature of the rod. The medium conduit is connected to a control valve; The temperature sensor and control valve are connected to a control module that keeps the control valve open until the temperature detected by the temperature sensor is lower than a set value.

10. The stirring rod as described in claim 1, characterized in that, The medium conduit is connected to an airflow generating device.

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