Drill rod for liquid metal casting flow control

Abstract

The utility model relates to the field of high-temperature metal liquid casting equipment, in particular to a liquid metal casting flow control drill rod which comprises a handle assembly, the handle assembly comprises a supporting column and a handle, the bottom end of the supporting column is fixedly connected to a rod body, a hole is formed in the top face of the supporting column, the handle comprises a transverse rod and a vertical rod, and the vertical rod is fixedly connected to the middle of the transverse rod. The transverse rods and the vertical rods form a T shape, and the ends, away from the middle transverse rod, of the vertical rods are inserted into the holes in the top faces of the supporting columns. When the drill rod pulling device is used, drill rod pulling force is applied at two points, force application is more reliable, and drill rod pulling is easier; an operator can hold the drill rod with two hands high and low, the head of the operator is perpendicular to the launder, and splashing and stabbing objects of the launder are isolated by the protective product, so that the operator is prevented from being injured, and drill rod replacement is safer; during flow adjustment, the drill rod can advance and retreat at a millimeter level by knocking the handle assembly, and the flow control effect is improved.

Description

Technical Field

[0001] The utility model relates to the field of high-temperature metal liquid casting equipment, in particular to a drill rod for liquid metal casting flow control. Background Art

[0002] In the casting and rolling production process of aluminum and aluminum alloys, the high-temperature metal liquid needs to adjust the flow rate according to the production speed to achieve the purpose of stable production. The flow control drill rod plays the role of adjusting the production rhythm. The flow control drill rod determines the accuracy, safety and reliability of the flow control operation.

[0003] The existing technology generally uses a flow control drill rod which is a round steel plus a drill head structure. The problem is that the flow control accuracy is insufficient, and the process of pulling out and replacing the drill rod easily causes the risk of burns to weakly protected parts of the personnel such as the head, face, and neck.

[0004] The prior art patent application number is CN201520801229.5 and the patent name is a utility model patent for a flow control drill. It discloses a flow control drill, including an iron rod, the left end of which is equipped with a plug by threaded connection, the plug is a cone with the tip facing left, the right end of the iron rod is provided with a handle, the left part of the iron rod is sleeved with a sleeve made of silicon carbide, the left end of the sleeve is in contact with the right end face of the plug, the outer diameter of the sleeve is not greater than the diameter of the right end face of the plug, and the gap between the sleeve and the iron rod is filled with a filling layer. The utility model has a simple structure and is easy to use, which prolongs the service life of the flow control drill, eliminates safety hazards, and also avoids the flow control drill from polluting aluminum water.

[0005] The above-mentioned prior art is provided with a handle at the right end of the iron rod, and there is a space between the handle and the iron rod for the operator's hand to pass through. When in use, the operator's hand needs to pass through or grasp the space between the handle and the iron rod. Once an accident occurs, it is difficult for the operator's hand to escape. If the operator wears gloves, the risk of being stuck and unable to escape is even greater. At the same time, the triangular helping handle formed by this prior art is still not conducive to the operator's grasping and precise adjustment. Utility Model Content

[0006] The utility model aims to provide a drill rod for controlling flow in liquid metal casting, which is easy to pull out the drill rod, safe to change the drill rod, reliable to control the flow, and improves the flow control effect.

[0007] To achieve the above-mentioned technical effect, the utility model discloses a drill rod for controlling flow in liquid metal casting, comprising a rod body and a drill bit, a screw portion I being provided at the front end of the rod body, a screw hole I being provided at the rear end of the drill bit, the screw portion I being connected in the screw hole I, and comprising a handle assembly, the handle assembly comprising a support column and a handle, the bottom end of the support column being fixedly connected to the rod body, a hole being provided on the top surface of the support column, the handle comprising a cross bar and a vertical rod, the vertical rod being fixedly connected to the middle part of the cross bar, the cross bar and the vertical rod forming a "T" shape, and one end of the vertical rod away from the middle cross bar being inserted into the hole on the top surface of the support column.

[0008] Furthermore, the hole on the top surface of the support column is a screw hole II, and an external thread II is provided on the outer wall of one end of the vertical rod away from the middle cross bar, and the external thread II is connected to the screw hole II.

[0009] Furthermore, the handle assembly includes a positioning nut and a positioning rod, a screw hole III is provided in the center of the positioning nut, an arc groove is provided on the top surface of the positioning nut, an external thread I is provided on the upper outer wall of the support column, the screw hole III is connected to the external thread I, the upper end of the positioning rod is connected to the bottom surface of the cross bar, and the positioning rod is slidably connected in the arc groove away from the lower end of the cross bar.

[0010] Furthermore, the positioning rod includes a screw portion II, a hexagonal portion and a straight rod portion. The screw portion II is arranged on the top surface of the hexagonal portion, and the straight rod portion is arranged on the bottom surface of the hexagonal portion. The screw portion II, the hexagonal portion and the straight rod portion are coaxial. A screw hole IV is provided on the bottom surface of the cross bar. The screw portion II is connected in the screw hole IV, and the lower end of the straight rod portion is slidably connected in the arc groove.

[0011] Furthermore, a ball head is provided at the lower end of the straight rod portion, and the ball head at the lower end of the straight rod portion is slidably connected in the arc groove.

[0012] Furthermore, the shape of the arc groove is a quarter circle, and the rotation angle of the handle is ≤90°.

[0013] The beneficial effects of the utility model are as follows: it includes a handle assembly, the handle assembly includes a support column and a handle, the bottom end of the support column is fixedly connected to the rod body, the top surface of the support column is provided with a hole, the handle includes a crossbar and a vertical rod, the vertical rod is fixedly connected to the middle of the crossbar, the crossbar and the vertical rod form a "T" shape, and the end of the vertical rod away from the middle crossbar is inserted into the hole on the top surface of the support column. When the utility model is used, the force for pulling out the drill is two points, the force is more reliable, and the pulling out of the drill is easier; the operator can hold the drill rod with both hands, one high and one low, the operator's head is perpendicular to the flow channel, the splashing of the flow channel, and the pierced objects are isolated by protective products to prevent injuries to personnel, making the replacement of the drill safer; when adjusting the flow rate, the drill rod can be moved forward and backward at the millimeter level by knocking the handle assembly, thereby improving the flow control effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 For this utility model Figure 1 AA section view;

[0016] Figure 3 This is a schematic diagram of the structure of the handle assembly of the utility model;

[0017] Figure 4 This is a structural schematic diagram of the positioning nut of the utility model;

[0018] Figure 5 This is a schematic diagram of the structure of the handle of the utility model;

[0019] Figure 6 It is a structural schematic diagram of the positioning rod of the utility model.

[0020] In the figure: 1. rod body; 101. screw part I; 2. drill bit; 201. screw hole I; 3. handle assembly; 4. support column; 401. screw hole II; 402. external thread I; 5. positioning nut; 501. screw hole III; 502. arc groove; 6. handle; 601. cross bar; 602. vertical bar; 603. external thread II; 604. screw hole IV; 7. positioning rod; 701. screw part II; 702. hexagonal part; 703. straight rod part. DETAILED DESCRIPTION

[0021] like Figure 1-Figure 6 As shown, the utility model is a drill rod for liquid metal casting flow control, comprising a rod body 1 and a drill bit 2, a screw portion Ⅰ101 is provided at the front end of the rod body 1, a screw hole Ⅰ201 is provided at the rear end of the drill bit 2, the screw portion Ⅰ101 is connected in the screw hole Ⅰ201, and comprises a handle assembly 3, the handle assembly 3 comprises a support column 4 and a handle 6, the bottom end of the support column 4 is fixedly connected to the rod body 1, a hole is provided on the top surface of the support column 4, the handle 6 comprises a cross bar 601 and a vertical rod 602, the vertical rod 602 is fixedly connected to the middle part of the cross bar 601, the cross bar 601 and the vertical rod 602 form a "T" shape, one end of the vertical rod 602 away from the middle cross bar 601 is inserted into the hole on the top surface of the support column 4, the hole on the top surface of the support column 4 is a screw hole Ⅱ401, and an external thread Ⅱ603 is provided on the outer wall of one end of the vertical rod 602 away from the middle cross bar 601, and the external thread Ⅱ603 is connected in the screw hole Ⅱ401.

[0022] The utility model is provided with a handle assembly 3. During operation, the operator holds the rod body 1 with one hand and the handle 6 with the other hand, thereby forming a two-point force, making the drill pulling operation easier; at the same time, the operator's two hands are one high and one low, and the operator's head is perpendicular to the flow channel. The splashing and piercing objects of the flow channel are isolated by protective products to prevent injuries to personnel and improve the safety of drill replacement; in addition, when adjusting the flow rate, the drill rod can be advanced and retreated at the millimeter level by knocking the support column 4 or the handle 6, thereby improving the flow control effect.

[0023] The handle assembly 3 includes a positioning nut 5 and a positioning rod 7. The center of the positioning nut 5 is provided with a screw hole III 501, and the top surface of the positioning nut 5 is provided with an arc groove 502. The upper outer wall of the support column 4 is provided with an external thread I 402, and the screw hole III 501 is connected to the external thread I 402. The upper end of the positioning rod 7 is connected to the bottom surface of the cross bar 601, and the lower end of the positioning rod 7 away from the cross bar 601 is slidably connected in the arc groove 502. The positioning rod 7 includes There are screw part II 701, hexagonal part 702 and straight rod part 703. The screw part II 701 is arranged on the top surface of the hexagonal part 702, and the straight rod part 703 is arranged on the bottom surface of the hexagonal part 702. The screw part II 701, the hexagonal part 702 and the straight rod part 703 are coaxial. The bottom surface of the cross bar 601 is provided with a screw hole IV 604. The screw part II 701 is connected in the screw hole IV 604, and the lower end of the straight rod part 703 is slidably connected in the arc groove 502.

[0024] The shape of the arc groove 502 is a quarter circle, and the rotation angle of the handle 6 is ≤90°.

[0025] The arc groove 502 is provided to position the rotation angle of the handle 6 . The handle 6 generally requires two working positions, one parallel to the rod body 1 and the other perpendicular to the rod body 1 .

[0026] Since the rotation of the handle 6 is achieved through the rotational connection between the external thread II 603 and the screw hole II 401, the height of the cross bar 601 will change when the handle 6 is rotated. The utility model adopts a connection method between the positioning nut 5 and the external thread I 402, which is convenient for adjusting the height of the positioning nut 5 and also convenient for the straight rod portion 703 to align with the arc groove 502. What is needed is that, considering the fact that the height of the cross bar 601 will change when the handle 6 is rotated, it is necessary to pay attention to the fact that the lower end of the straight rod portion 703 cannot be butted against the bottom wall of the arc groove 502 during the sliding process, and the straight rod portion 703 cannot be separated from the arc groove 502, thereby preventing the straight rod portion 703 from getting stuck when sliding in the arc groove 502 or the limit of the arc groove 502 from failing.

[0027] A ball head is provided at the lower end of the straight rod portion 703 , and the ball head at the lower end of the straight rod portion 703 is slidably connected in the arc groove 502 .

[0028] The lower end of the straight rod portion 703 is provided with a ball head, which is more conducive to the sliding of the lower end of the straight rod portion 703 in the arc groove 502.

Claims

1. A drill rod for controlling flow in liquid metal casting, comprising a rod body (1) and a drill head (2), wherein the front end of the rod body (1) is provided with a screw portion I (101), the rear end of the drill head (2) is provided with a screw hole I (201), the screw portion I (101) is connected to the screw hole I (201), and the characteristics are: The handle assembly (3) comprises a support column (4) and a handle (6), wherein the bottom end of the support column (4) is fixedly connected to the rod body (1), and a hole is provided on the top surface of the support column (4). The handle (6) comprises a crossbar (601) and a vertical bar (602), and the vertical bar (602) is fixedly connected to the middle part of the crossbar (601). The crossbar (601) and the vertical bar (602) form a "T" shape, and one end of the vertical bar (602) away from the middle crossbar (601) is inserted into the hole on the top surface of the support column (4).

2. A liquid metal casting flow control drill rod according to claim 1, characterized in that: The hole on the top surface of the support column (4) is a screw hole II (401), and an external thread II (603) is provided on the outer wall of one end of the vertical rod (602) away from the middle cross rod (601), and the external thread II (603) is connected to the screw hole II (401).

3. A liquid metal casting flow control drill rod according to claim 2, characterized in that: The handle assembly (3) comprises a positioning nut (5) and a positioning rod (7), the positioning nut (5) having a screw hole III (501) at its center, a circular arc groove (502) on its top surface, an external thread I (402) on its upper outer wall, the screw hole III (501) being connected to the external thread I (402), the upper end of the positioning rod (7) being connected to the bottom surface of the cross bar (601), and the lower end of the positioning rod (7) being away from the cross bar (601) being slidably connected in the circular arc groove (502).

4. A liquid metal casting flow control drill rod according to claim 3, characterized in that: The positioning rod (7) includes a screw portion II (701), a hexagonal portion (702) and a straight rod portion (703). The screw portion II (701) is arranged on the top surface of the hexagonal portion (702), and the straight rod portion (703) is arranged on the bottom surface of the hexagonal portion (702). The screw portion II (701), the hexagonal portion (702) and the straight rod portion (703) are coaxial. A screw hole IV (604) is provided on the bottom surface of the cross bar (601). The screw portion II (701) is connected to the screw hole IV (604), and the lower end of the straight rod portion (703) is slidably connected to the arc groove (502).

5. A liquid metal casting flow control drill rod according to claim 4, characterized in that: A ball head is provided at the lower end of the straight rod portion (703), and the ball head at the lower end of the straight rod portion (703) is slidably connected in the arc groove (502).

6. A liquid metal casting flow control drill rod according to any one of claims 3 to 5, characterized in that: The shape of the arc groove (502) is a quarter circle, and the rotation angle of the handle (6) is ≤90°.

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