Single-screw pump with stator convenient to replace

Abstract

The utility model relates to the field of single-screw pumps, in particular to a single-screw pump with a stator convenient to replace, which comprises a pump seat, a motor is fixed on the pump seat, a material pipe is integrally arranged on one side, back to the motor, of the pump seat, the stator is mounted at the end of the material pipe, and an end cover is mounted at the end of the stator. A rotor is fixed to the output end of the motor through a coupler and penetrates through the material pipe to be arranged on the inner side of the stator, the connecting assembly is installed between the material pipe and the end cover and comprises an installation plate fixed to the side wall of the material pipe, and threaded rods are hinged to the four corners of the installation plate through rotating shafts; according to the single-screw pump with the stator convenient to replace, the special connecting assembly is designed, and the special connecting assembly comprises the mounting plate, the threaded rod, the mounting groove, the nut and other structures, so that the stator replacement process becomes simple and rapid. The fixing of the end cover by the connecting assembly can be unfastened only by unscrewing the nut and moving the threaded rod out of the mounting groove, and then the end cover is taken down to replace the stator, so that the maintenance efficiency is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of single screw pumps, specifically a single screw pump with an easy-to-replace stator. Background Technology

[0002] After a period of use, the rotor of an existing single screw pump will wear out and needs to be replaced to ensure the pump works properly. The existing rotor is usually fixed with bolts, which is troublesome to install and disassemble, and bolts and nuts are easy to lose.

[0003] Therefore, it is necessary to provide a single screw pump that facilitates stator replacement to solve the above-mentioned technical problems. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a single screw pump that facilitates stator replacement.

[0005] This utility model provides a single screw pump with an easy-to-replace stator, including a pump base, a motor fixed on the pump base, a feed pipe integrally provided on the side of the pump base opposite to the motor, a stator installed at the end of the feed pipe, an end cover installed at the end of the stator, a rotor fixed to the output end of the motor via a coupling, and the rotor passing through the feed pipe and disposed inside the stator, and also includes a connecting assembly installed between the feed pipe and the end cover, the connecting assembly including a mounting plate fixed to the side wall of the feed pipe, threaded rods hinged to the four corners of the mounting plate via rotating shafts, a mounting groove provided on the side wall of the end cover, and a nut threadedly connected to the threaded rod through the mounting groove.

[0006] Preferably, the stator has a hexagonal protrusion at one end, and the end cap has a hexagonal groove on the inner side that mates with the hexagonal protrusion.

[0007] Preferably, sealing gaskets are installed at the connections between the stator and the feed tube and the end cap.

[0008] Preferably, the mounting plate is provided with a limiting part for restricting the threaded rod from rotating within a certain range along the shaft.

[0009] Preferably, the mounting slot is arranged in a horizontal direction.

[0010] Compared with related technologies, the present invention provides the following beneficial effects:

[0011] Facilitates stator replacement: A specially designed connecting assembly, including a mounting plate, threaded rod, mounting groove, and nut, simplifies and speeds up stator replacement. Simply loosen the nut and remove the threaded rod from the mounting groove to release the connecting assembly from the end cover, allowing for easy removal of the end cover and stator replacement, significantly improving maintenance efficiency.

[0012] Ensuring a secure connection: The end cover and stator are tightly fitted together by hexagonal protrusions and hexagonal grooves, which not only serves a positioning function but also ensures a tight connection between the two, improving the overall stability of the pump.

[0013] Easy installation and disassembly: The mounting plate has a limiting part that restricts the rotation angle of the threaded rod, allowing for faster and more accurate positioning into the mounting slot during installation. At the same time, the mounting slot is horizontally oriented, preventing the threaded rod from detaching from the slot under its own weight, further ensuring the stability and reliability of the connection components and making installation and disassembly more convenient. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram showing the relative positions of the hexagonal grooves of this utility model;

[0016] Figure 3 This is a schematic diagram of the limiting part structure of this utility model.

[0017] The following are the labels in the diagram: 1. Stator; 2. Pump base; 3. Motor; 4. Material pipe; 5. End cover; 6. Rotor; 7. Connecting assembly; 8. Mounting plate; 9. Shaft; 10. Threaded rod; 11. Mounting groove; 12. Nut; 13. Hexagonal protrusion; 14. Hexagonal groove; 15. Limiting part. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Please refer to 1- Figure 3 A single screw pump with an easily replaceable stator is disclosed. Its core structure includes a pump base 2, on which an electric motor 3 is securely fixed, providing rotational driving force. On the side of the pump base 2 facing away from the electric motor 3, a feed pipe 4 is integrally installed. The feed pipe 4 serves as a material conveying channel, and a stator 1 is installed at its end. The stator 1 is a key component of the single screw pump, used to cooperate with the rotor 6 to convey materials. An end cover 5 is installed at the end of the stator 1, used to close one end of the stator 1 to ensure normal material flow within the pump.

[0020] The output end of the motor 3 is fixedly connected to the rotor 6 through a coupling. The rotor 6 passes through the material pipe 4 and extends into the inside of the stator 1. When the motor 3 starts, the rotor 6 will rotate inside the stator 1, thereby realizing the conveying of materials.

[0021] To facilitate the replacement of the stator 1, the single screw pump is specially designed with a connecting assembly 7, which is installed between the feed pipe 4 and the end cover 5. The connecting assembly 7 includes a mounting plate 8 fixed to the side wall of the feed pipe 4, and threaded rods 10 are hinged to each of the four corners of the mounting plate 8 via pivots 9. The side wall of the end cover 5 is provided with mounting grooves 11 that match the threaded rods 10. During installation, the threaded rods 10 are passed through the mounting grooves 11 and connected to the end cover 5 securely to the feed pipe 4 via threaded nuts 12.

[0022] In addition, the end of the stator 1 is provided with a hexagonal protrusion 13, and the inner side of the end cover 5 is provided with a hexagonal groove 14 that fits tightly with the hexagonal protrusion 13. This design not only positions the end cover 5, but also ensures a tight connection between the end cover 5 and the stator 1.

[0023] In terms of sealing, gaskets are installed at the connection between stator 1, material pipe 4, and end cover 5. These gaskets effectively prevent material leakage and improve the sealing effect of the pump.

[0024] To facilitate installation and disassembly, the mounting plate 8 is also provided with a limiting part 15 to restrict the rotation of the threaded rod 10 along the shaft 9 within a certain range. This design limits the rotation angle of the threaded rod 10, thereby enabling it to be positioned more quickly and accurately into the mounting groove 11 during installation.

[0025] Meanwhile, the mounting groove 11 is set along the horizontal direction. This design effectively prevents the threaded rod 10 from falling out of the mounting groove 11 under its own weight, ensuring the stability and reliability of the connecting assembly 7.

[0026] Working principle:

[0027] When it is necessary to replace stator 1, first loosen nut 12 and remove threaded rod 10 from mounting slot 11. Since threaded rod 10 is hinged to mounting plate 8 via pivot 9, and mounting plate 8 has limiting part 15 to restrict the rotation range of threaded rod 10, threaded rod 10 can be easily removed from mounting slot 11, thereby releasing the fixing of end cover 5 by connecting assembly 7. Next, end cover 5 can be removed. Since the end of stator 1 has hexagonal protrusion 13, and the inner side of end cover 5 has hexagonal groove 14 that matches it, this design allows end cover 5 to have a positioning function during installation, and also facilitates the disassembly of end cover 5. After removing end cover 5, stator 1 can be easily replaced. After replacing stator 1, reinstall end cover 5, reinsert threaded rod 10 into mounting slot 11, and tighten nut 12 to complete the replacement of stator 1. Sealing gaskets are installed at the connections between stator 1, feed pipe 4, and end cover 5 to ensure the pump's sealing effect.

[0028] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A single screw pump with an easily replaceable stator, comprising a pump base (2), on which a motor (3) is fixed, and a feed pipe (4) integrally provided on the side of the pump base (2) opposite to the motor (3), a stator (1) is installed at the end of the feed pipe (4), an end cap (5) is installed at the end of the stator (1), and a rotor (6) is fixed to the output end of the motor (3) via a coupling, and the rotor (6) passes through the feed pipe (4) and is disposed inside the stator (1), characterized in that, It also includes a connecting assembly (7) installed between the material tube (4) and the end cap (5). The connecting assembly (7) includes a mounting plate (8) fixed to the side wall of the material tube (4). Each of the four corners of the mounting plate (8) is hinged with a threaded rod (10) through a pivot (9). The side wall of the end cap (5) is provided with a mounting groove (11). The threaded rod (10) passes through the mounting groove (11) and is connected to a nut (12) by a thread.

2. The single screw pump with easy replacement of the stator according to claim 1, characterized in that The stator (1) has a hexagonal protrusion (13) at its end, and the end cap (5) has a hexagonal groove (14) on its inner side that mates with the hexagonal protrusion (13).

3. The single screw pump with easy replacement of the stator according to claim 1, characterized in that, Sealing gaskets are installed at the connection points between the stator (1), the feed tube (4), and the end cap (5).

4. The single screw pump with easy stator replacement according to claim 1, characterized in that, The mounting plate (8) is provided with a limiting part (15) for limiting the rotation of the threaded rod (10) along the shaft (9) within a certain range.

5. The single screw pump with easy replacement of the stator according to claim 1, characterized in that, The mounting slot (11) is set in a horizontal direction.

Images