A molten aluminum lifting pump impeller connecting head structure

Abstract

The utility model belongs to molten aluminum vortex well system technical field discloses a molten aluminum lifting pump impeller connector structure is set up in the impeller main part axle handle end of molten aluminum lifting pump, including connecting cover and tension bolt, the connecting cover includes the cylinder portion and the dome plate of coaxial arrangement, the cylinder portion cooperation sleeve is connected on the cylindrical end head of impeller main part axle handle, the cylinder portion bottom along symmetry is equipped with two compression joints, the compression joint is along the axial direction of cylinder portion and is equipped with, connecting cover is provided with a section bolt sleeve respectively on both sides of compression joint, tension bolt is connected in the hole of bolt sleeve and is pulled tightly two section bolt sleeve, tension bolt axis is perpendicular to compression joint. The utility model discloses molten aluminum lifting pump impeller connector structure, has improved the axle handle end connecting strength of impeller main part obviously.

Description

Technical Field

[0001] This utility model relates to the technical field of aluminum liquid vortex well systems, and in particular to a structure for an impeller connector of an aluminum liquid booster pump. Background Technology

[0002] The aluminum vortex well system is a key component of a dual-chamber aluminum furnace or a recycled aluminum smelting furnace. It is mainly used for the efficient and low-loss melting of scrap aluminum such as aluminum chips and scraps. Its core principle is to use the high-speed rotation of the impeller in the pump chamber to lift the aluminum liquid. The aluminum liquid enters the vortex well and flows from top to bottom along the side wall of the vortex well to form a vortex, which quickly immerses the scrap aluminum into the vortex molten pool, thus reducing oxidation loss.

[0003] Generally, in aluminum molten metal vortex well systems, the output shaft of the geared motor is coaxially connected to the impeller shaft in the pump chamber, driving the impeller shaft to rotate. In practice, the impeller shaft is often cast from refractory material, and an adapter is needed to connect it to the geared motor's output shaft. However, the existing connection between the impeller shaft tip and the adapter is unreliable and prone to breakage. For example... Figure 1 As shown, the connecting rod 1' is pre-embedded at the shaft end of the impeller body 1. This connection method requires high pre-embedding installation accuracy and reduces the strength of the shaft end. Figure 2 As shown, the shaft end of the impeller body 1 is fitted with an adapter cap 2', and the adapter cap 2' is then connected to the output shaft end of the geared motor via flange bolts or a gland, ensuring coaxiality. However, in this case, in order to improve the torque transmission strength of the adapter cap 2', a radially perforated long bolt 3' needs to be inserted between the shaft end of the impeller body 1 and the adapter cap 2'. The shaft end of the impeller body 1 needs to have at least two radial through holes, which seriously reduces the structural strength of the shaft end. Utility Model Content

[0004] The purpose of this invention is to provide an impeller connector structure for an aluminum liquid booster pump, which significantly improves the connection strength of the shaft end of the impeller body.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] This utility model relates to an impeller connector structure for an aluminum liquid booster pump. The structure is located at the impeller shaft end of the pump and includes a connector cover and a tensioning bolt. The connector cover comprises a coaxially arranged cylindrical portion and a dome plate. The cylindrical portion fits onto the cylindrical end of the impeller shaft. Two compression slits are symmetrically formed along the bottom edge of the cylindrical portion, extending axially. A bolt sleeve is provided on each side of the compression slits on the connector cover. The tensioning bolt passes through the central hole of each bolt sleeve and tightens the two bolt sleeve sections. The axis of the tensioning bolt is perpendicular to the compression slits.

[0007] Furthermore, the width of the compression joint is 2 to 5 millimeters.

[0008] Furthermore, a circular hole relief groove is provided at the bottom end of the compression joint.

[0009] Furthermore, the locking nut of the tensioning bolt is secured using an anti-loosening locking nut or a double locking nut method.

[0010] Furthermore, it also includes a mounting half-ring, wherein a mounting ring groove is provided on the cylindrical end of the impeller body, and a shallow mounting groove is provided on the inner wall of the cylindrical part of the connecting cover; the two semi-circular ring-shaped mounting half-rings are fastened together between the mounting ring groove and the shallow mounting groove.

[0011] Furthermore, there are two clamping ring grooves, which are opened parallel to each other at both ends of the compression joint.

[0012] Furthermore, the dome plate of the connecting cover is provided with threaded holes, and a plurality of threaded holes are evenly distributed around the circumference.

[0013] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0014] This utility model of an aluminum liquid booster pump impeller connector structure uses a combination of tension bolts and compression joints to tightly clamp the cylindrical portion to the cylindrical end of the impeller body, ensuring connection strength and preventing detachment. Furthermore, this clamping method eliminates the need for through holes in the cylindrical end of the impeller body, preserving its integrity and reducing the risk of breakage. This utility model of an aluminum liquid booster pump impeller connector structure significantly improves the connection strength of the impeller body's shaft end.

[0015] Furthermore, by creating a circular hole clearance groove at the bottom of the compression joint, stress concentration at the root of the compression joint is reduced, lowering the risk of cracks originating from the root. An effective anti-loosening locking method prevents the tension bolts from loosening during impeller rotation, ensuring stable and safe long-term operation of the equipment. Adding a retaining semi-ring between the cylindrical end of the impeller body and the connecting cover significantly improves the anti-detachment performance between them; a reasonably designed shallow groove depth ensures that the cylindrical part of the connecting cover can be smoothly inserted into the cylindrical end of the impeller body during installation; and two retaining ring grooves achieve a more uniform clamping connection. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings.

[0017] Figure 1 A front view schematic diagram of the existing aluminum liquid booster pump impeller connector structure;

[0018] Figure 2 A front view schematic diagram of another existing aluminum liquid booster pump impeller connector structure;

[0019] Figure 3 This is a three-dimensional schematic diagram of the impeller connector structure of the aluminum liquid booster pump of this utility model;

[0020] Figure 4 This is a front view schematic diagram of the impeller connector structure of the aluminum liquid booster pump of this utility model;

[0021] Figure 5 for Figure 4 A schematic diagram of a partial cross-sectional view of the AA section;

[0022] Figure 6 This is a three-dimensional schematic diagram of the impeller body in this utility model.

[0023] Explanation of reference numerals in the attached diagram: 1' Connecting rod; 2' Adapter cap; 3' Through-hole long bolt;

[0024] 1. Impeller body; 101. Clamping ring groove; 2. Connecting cover; 201. Compression joint; 202. Bolt sleeve; 203. Shallow clamping groove; 3. Tightening bolt; 4. Clamping half ring. Detailed Implementation

[0025] The core of this utility model is to provide an impeller connector structure for an aluminum liquid booster pump, which significantly improves the connection strength of the shaft end of the impeller body.

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0028] Refer to the attached diagram. Figure 1 A front view schematic diagram of the existing aluminum liquid booster pump impeller connector structure; Figure 2 A front view schematic diagram of another existing aluminum liquid booster pump impeller connector structure; Figure 3This is a three-dimensional schematic diagram of the impeller connector structure of the aluminum liquid booster pump of this utility model; Figure 4 This is a front view schematic diagram of the impeller connector structure of the aluminum liquid booster pump of this utility model; Figure 5 for Figure 4 A schematic diagram of a partial cross-sectional view of the AA section; Figure 6 This is a three-dimensional schematic diagram of the impeller body in this utility model.

[0029] In one specific implementation, such as Figure 3 and Figure 4 As shown, the impeller connector structure of this utility model for an aluminum liquid booster pump is located at the shaft end of the impeller body 1 of the aluminum liquid booster pump, and includes a connecting cover 2 and a tensioning bolt 3. The connecting cover 2 includes a cylindrical part and a dome plate arranged coaxially, that is, the bottom opening of the cylindrical part is integrally connected to the top of the dome plate, and the dome plate is coaxially connected to the output shaft end of the geared motor. Specifically, the connecting cover 2 is made of brass. The cylindrical part fits into the cylindrical end of the shaft of the impeller body 1. Two compression slots 201 are symmetrically opened along the bottom edge of the cylindrical part, and the compression slots 201 are opened along the axial direction of the cylindrical part. A bolt sleeve 202 is provided on both sides of the compression slot 201 of the connecting cover 2, and the tensioning bolt 3 is inserted into the central hole of the bolt sleeve 202 and tightens the two bolt sleeves 202. The axis of the tensioning bolt 3 is perpendicular to the compression slot 201.

[0030] Compared to the existing Figure 2 The impeller body 1 is connected to the shaft end and the adapter cap 2' using a perforated long bolt 3'. This invention employs a tension bolt 3 in conjunction with a compression joint 201 to tighten the cylindrical portion tightly to the cylindrical end of the impeller body 1, ensuring connection strength and preventing detachment. Furthermore, this tightening method does not require a through hole on the cylindrical end of the impeller body 1, ensuring the integrity of the cylindrical end and reducing the likelihood of breakage.

[0031] In one specific embodiment of this utility model, such as Figure 3 As shown, the width of the compression joint 201 is 2–5 mm. The two tensioning bolts 3 are symmetrically arranged about the center line of the impeller body 1.

[0032] Specifically, such as Figure 3 As shown, a circular hole relief groove is provided at the bottom end of the compression joint 201.

[0033] By opening a circular hole relief groove at the bottom of the compression joint 201, the stress concentration at the root of the compression joint 201 is reduced, thus reducing the risk of cracks occurring at the root of the compression joint 201.

[0034] Specifically, such as Figure 3 and Figure 4 As shown, the locking nut of the tension bolt 3 is locked using an anti-loosening locking nut or a double locking nut method.

[0035] The effective anti-loosening locking method can prevent the tension bolt 3 from loosening during the rotation of the impeller body 1, ensuring the stable and safe long-term operation of the equipment.

[0036] In one specific embodiment of this utility model, threaded holes are provided on the dome plate of the connecting cover 2, with multiple threaded holes evenly distributed around the circumference. When connecting to the mating flange at the output shaft end of the geared motor, screws are used to lock the upper part into the threaded holes to achieve a reliable connection.

[0037] Obviously, the dome plate of the connecting cover 2 can also be made without threaded holes, and instead a pressure cap can be used for clamping connection. Specifically, the pressure cap is threaded to the external thread of the output shaft end of the geared motor, and the dome plate is coaxially pressed to the output shaft end of the geared motor. Similar simple replacement methods all fall within the protection scope of this utility model.

[0038] In one specific embodiment of this utility model, such as Figure 5 and Figure 6 As shown, the impeller connector structure of this utility model aluminum liquid booster pump also includes a retaining half-ring 4. A retaining ring groove 101 is provided on the cylindrical end of the impeller body 1, and a shallow retaining groove 203 is provided on the inner wall of the cylindrical portion of the connecting cover 2. Both the retaining ring groove 101 and the shallow retaining groove 203 are full-circle annular grooves. Two semi-circular retaining half-rings 4 are interlocked and installed between the retaining ring groove 101 and the shallow retaining groove 203. A gap is left between the two interlocking retaining half-rings 4.

[0039] Specifically, such as Figure 5 and Figure 6 As shown, the depth of the shallow groove 203 is controlled between 0.1 and 0.3 times the diameter of the mounting half-ring 4, and the diameter of the mounting half-ring 4 is between 8 and 12 mm. This allows the cylindrical part of the connecting cover 2 to be smoothly inserted into the cylindrical end of the impeller body 1.

[0040] Specifically, such as Figure 5 and Figure 6 As shown, there are two clamping ring grooves 101, which are opened in parallel at both ends of the compression joint 201.

[0041] By adding a mounting half-ring 4 between the cylindrical end of the impeller body 1 and the connecting cover 2, the anti-disengagement performance between the two is significantly improved; by reasonably setting the depth of the shallow groove 203, it can be ensured that the cylindrical part of the connecting cover 2 can be smoothly inserted into the cylindrical end of the impeller body 1 during installation; by setting two mounting ring grooves 101, a relatively uniform clamping connection can be achieved.

[0042] The installation process of the impeller connector structure of this utility model aluminum liquid booster pump is as follows: The two retaining ring grooves 101 on the cylindrical end of the impeller body 1 are machined simultaneously during the machining of the shaft of the impeller body 1, thus ensuring good coaxiality. The two retaining half-rings 4 are snapped into the retaining ring grooves 101, completing the installation of both retaining ring grooves 101. The connecting cover 2 is then fitted onto the cylindrical end of the impeller body 1, ensuring that the gaps and compression seams 201 between the retaining half-rings 4 are staggered. The tension bolts 3 are threaded into the bolt sleeves 202 and locked using anti-loosening lock nuts. The lock nuts are tightened alternately and gradually until the set torque is reached. Note that the two tension bolts 3 are symmetrically arranged about the centerline of the impeller body 1. After long-term operation, during maintenance, it is necessary to check whether the tightening torque of the lock nuts on the tension bolts 3 meets the set requirements.

[0043] In summary, the impeller connector structure of this aluminum liquid booster pump, using a tension bolt 3 in conjunction with a compression joint 201, tightly clamps the cylindrical portion to the cylindrical end of the impeller body 1, ensuring connection strength and preventing detachment. Furthermore, this clamping method avoids opening through holes in the cylindrical end of the impeller body 1, ensuring the integrity of the cylindrical end and reducing the risk of breakage. This impeller connector structure significantly improves the connection strength of the impeller body's shaft end. In addition, by creating a circular recessed groove at the bottom of the compression joint 201, stress concentration at the root of the compression joint 201 is reduced, lowering the risk of cracks at the root of the compression joint 201. The effective anti-loosening locking method prevents the tension bolt 3 from loosening during the rotation of the impeller body 1, ensuring stable, safe, and long-term operation of the equipment. By adding a mounting half-ring 4 between the cylindrical end of the impeller body 1 and the connecting cover 2, the anti-disengagement performance between the two is significantly improved; by reasonably setting the depth of the shallow groove 203, it can be ensured that the cylindrical part of the connecting cover 2 can be smoothly inserted into the cylindrical end of the impeller body 1 during installation; by setting two mounting ring grooves 101, a relatively uniform clamping connection can be achieved.

[0044] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0045] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. An impeller connector structure for an aluminum liquid booster pump, disposed at the shaft end of the impeller body (1) of the aluminum liquid booster pump, characterized in that, The assembly includes a connecting cover (2) and a tensioning bolt (3). The connecting cover (2) includes a cylindrical part and a dome plate arranged coaxially. The cylindrical part is fitted onto the cylindrical end of the shaft of the impeller body (1). Two compression slots (201) are symmetrically opened at the bottom edge of the cylindrical part. The compression slots (201) are opened along the axial direction of the cylindrical part. The connecting cover (2) has a bolt sleeve (202) on each side of the compression slot (201). The tensioning bolt (3) passes through the hole in the bolt sleeve (202) and tightens the two bolt sleeves (202). The axis of the tensioning bolt (3) is perpendicular to the compression slot (201).

2. The impeller connector structure for the aluminum liquid booster pump according to claim 1, characterized in that, The width of the compression joint (201) is 2 to 5 mm.

3. The impeller connector structure of the aluminum liquid booster pump according to claim 2, characterized in that, The bottom end of the compression joint (201) is provided with a circular hole relief groove.

4. The impeller connector structure of the aluminum liquid booster pump according to claim 1, characterized in that, The locking nut of the tensioning bolt (3) is locked by using an anti-loosening locking nut or by using a double locking nut.

5. The impeller connector structure of the aluminum liquid booster pump according to claim 1, characterized in that, It also includes a mounting half-ring (4), a mounting ring groove (101) is provided on the cylindrical end of the impeller body (1), and a shallow groove (203) is provided on the inner wall of the cylindrical part of the connecting cover (2); the two semi-circular ring-shaped mounting half-rings (4) are fastened together between the mounting ring groove (101) and the shallow groove (203).

6. The impeller connector structure of the aluminum liquid booster pump according to claim 5, characterized in that, The number of the mounting ring grooves (101) is two, and the two mounting ring grooves (101) are opened in parallel at both ends of the compression joint (201).

7. The impeller connector structure for the aluminum liquid booster pump according to claim 1, characterized in that, The dome plate of the connecting cover (2) is provided with threaded holes, and a plurality of threaded holes are evenly distributed around the circumference.

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