A modular screw pump rotor assembly that can be quickly replaced

Abstract

This invention belongs to the field of screw pump technology, and in particular to a modular screw pump rotor assembly that can be quickly replaced. It includes a screw pump main body, within which a power spindle is located. This invention involves releasing the locking state of the movable cover, then pulling the movable cover via a flexible traction steel cable to pull the quick-locking pins. This causes the ends of the quick-locking pins to disengage from the slots of the mounting blocks. Once all quick-locking pins have disengaged, the mounting blocks and insertion positioning slots lose their fixing effect, allowing the modular rotor assembly to be removed from the power spindle. The mounting block of another modular rotor assembly is then inserted into the insertion positioning slot. Releasing the force on the movable cover allows the ends of the quick-locking pins to automatically extend into the corresponding insertion positioning slots under the elastic force of the return spring, and engage with the slots of the mounting blocks, thus fixing the modular rotor assembly to the power spindle. This facilitates quick assembly and disassembly of the modular rotor assembly.

Description

Technical Field

[0001] This utility model relates to the field of screw pump technology, specifically to a modular screw pump rotor assembly that can be quickly replaced. Background Technology

[0002] Screw pumps, as important fluid transport equipment, are widely used in many industrial fields such as oil extraction, chemical industry, and food processing. Their core working components consist of a stator and a rotor. Fluid transport is achieved through the rotational motion of a modular rotor assembly within the stator. During actual use, the modular rotor assembly is prone to wear and damage due to prolonged exposure to complex operating conditions, such as high pressure, high-speed rotation, and friction with the fluid medium. Once a modular rotor assembly fails, it needs to be replaced or repaired promptly to ensure the normal operation of the screw pump.

[0003] However, current common connection methods for modular screw pump rotor assemblies have many drawbacks. While welding can ensure a certain level of connection strength, it presents significant difficulties when the modular rotor assembly needs installation or maintenance. Welding makes the modular rotor assembly a single unit, requiring the destruction of the welded structure for disassembly. This not only increases the difficulty and cost of maintenance but may also render the modular rotor assembly unusable. Another common connection method is using screws. While screw connections facilitate disassembly to some extent, the process of tightening and loosening each screw individually is cumbersome and inefficient. Therefore, we propose a quickly replaceable modular screw pump rotor assembly to address these issues. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a modular screw pump rotor assembly that can be quickly replaced, thus solving the problems mentioned in the background section.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0008] A quick-change modular screw pump rotor assembly includes a screw pump main body, a power spindle inside the main body, a modular rotor assembly on one side of the power spindle, a mounting plate welded to the end of the modular rotor assembly, and multiple mounting blocks annularly welded to one side of the mounting plate. Each mounting block has a slot on one side. A fixed support plate is fixedly connected to the end of the power spindle. The fixed support plate has multiple cavities and multiple insertion positioning slots, which engage with corresponding mounting blocks. The cavities are equipped with... The device includes a quick-locking pin, the end of which extends into a corresponding insertion positioning groove and engages with the groove. A limit stop ring is welded onto the quick-locking pin. A return spring is fixedly connected between one side of the limit stop ring and one side of the inner wall of the corresponding cavity. A guide wheel is rotatably connected to one side of the inner wall of the cavity. A flexible traction steel rope is fixedly connected to the other end of the quick-locking pin. The end of the flexible traction steel rope passes around one side of the corresponding guide wheel and extends to the outside of the fixed support plate, where a movable cover is fixedly connected. The movable cover is sleeved on the power spindle.

[0009] Furthermore, the return spring is movably sleeved on the corresponding quick-fixing pin.

[0010] Furthermore, a locking and positioning groove is provided on one side of the fixed support plate, and a T-shaped rod is provided on the movable cover.

[0011] Furthermore, the end of the T-shaped rod extends outside the movable cover and is welded with a clamping positioning block, which is engaged with the locking positioning groove.

[0012] Furthermore, a tension spring is fixedly connected between one inner wall of the T-shaped rod and one inner wall of the movable cover, and the tension spring is movably sleeved on the T-shaped rod.

[0013] Furthermore, the right side of the screw pump main body is in movable contact with a housing, which is fitted onto the modular rotor assembly.

[0014] Furthermore, a connecting transition plate is welded to one side of the outer casing, and the connecting transition plate is threadedly connected to the main body of the screw pump by a plurality of fastening bolts.

[0015] (III) Beneficial Effects

[0016] Compared with the prior art, this utility model provides a modular screw pump rotor assembly that can be quickly replaced, which has the following advantages:

[0017] This invention releases the locking state of the movable cover by pulling the locking positioning block. Then, pulling the movable cover causes it to pull the quick-fixing pins via a flexible traction steel rope, overcoming the elasticity of the return spring. This causes the ends of the quick-fixing pins to exit the slots of the mounting block. Once all the quick-fixing pins have exited their slots, the mounting block and the insertion positioning groove lose their fixing effect. At this point, the modular rotor assembly can be removed from the power spindle, completing the disassembly of the modular rotor assembly. Then, the mounting block of another modular rotor assembly is inserted into the insertion positioning groove. The force on the movable cover is released. Since the return spring is in its natural state, the ends of the quick-fixing pins automatically extend into the corresponding insertion positioning grooves under the elasticity of the return spring and engage with the slots of the mounting block, thereby fixing the mounting block in the insertion positioning grooves and fixing the modular rotor assembly to the power spindle. This facilitates quick assembly and disassembly of the modular rotor assembly. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a three-dimensional structural diagram of the cut-open screw pump main body of this utility model;

[0020] Figure 3 This is a three-dimensional structural diagram of the modular rotor assembly and mounting plate connection of this utility model;

[0021] Figure 4 This is a three-dimensional structural diagram showing the connection between the power spindle, fixed support plate, and movable cover of this utility model.

[0022] Figure 5 This is a three-dimensional structural diagram of the fixed support plate of this utility model cut open;

[0023] Figure 6 This is a three-dimensional structural diagram of the connection between the T-shaped rod, tension spring, and locking positioning block of this utility model.

[0024] In the diagram: 1. Screw pump main body; 2. Power spindle; 3. Modular rotor assembly; 4. Housing; 5. Mounting plate; 6. Mounting block; 7. Slot; 8. Fixed support plate; 9. Cavity; 10. Insertion positioning slot; 11. Quick-locking pin; 12. Limit stop ring; 13. Return spring; 14. Guide wheel; 15. Flexible traction steel rope; 16. Moving cover; 17. Locking positioning slot; 18. T-shaped rod; 19. Tension spring; 20. Clamping positioning block; 21. Connecting transition plate; 22. Fastening bolt. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. 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.

[0026] Example

[0027] like Figure 1-6 As shown in the figure, an embodiment of this utility model proposes a modular screw pump rotor assembly that can be quickly replaced, including a screw pump main body 1, a power spindle 2 inside the screw pump main body 1, a modular rotor assembly 3 on one side of the power spindle 2, a mounting plate 5 welded to the end of the modular rotor assembly 3, a plurality of mounting blocks 6 annularly welded to one side of the mounting plate 5, a slot 7 opened on one side of the mounting block 6, a fixed support plate 8 fixedly connected to the end of the power spindle 2, a plurality of cavities 9 and a plurality of insertion positioning slots 10 opened on the fixed support plate 8, the insertion positioning slots 10 engaging with the corresponding mounting blocks 6, and a cavity 9 containing a... A quick-fixing pin 11 is provided, with its end extending into the corresponding insertion positioning groove 10 and engaging with the slot 7. A limit stop ring 12 is welded onto the quick-fixing pin 11. A return spring 13 is fixedly connected between one side of the limit stop ring 12 and one side of the inner wall of the corresponding cavity 9. A guide wheel 14 is rotatably connected to one side of the inner wall of the cavity 9. A flexible traction steel rope 15 is fixedly connected to the other end of the quick-fixing pin 11. The end of the flexible traction steel rope 15 passes around one side of the corresponding guide wheel 14 and extends to the outside of the fixed support plate 8, where a movable cover 16 is fixedly connected. The movable cover 16 is sleeved on the power spindle 2.

[0028] When using the modular rotor assembly 3, disassemble the outer casing 4 from the screw pump main body 1, then pull the locking positioning block 20 to disengage it from the locking positioning groove 17, releasing the locking state of the moving cover 16. Then pull the moving cover 16, which pulls the quick-fixing pin 11 through the flexible traction steel rope 15, overcoming the elastic force of the return spring 13, so that the end of the quick-fixing pin 11 exits from the slot 7 of the mounting block 6 and returns to the cavity 9 of the fixed support plate 8. When all the quick-fixing pins 11 have exited from the slot 7, the mounting block 6 and the insertion positioning groove 10 lose their fixing effect. At this time, the modular rotor assembly 3 can be removed from the power main shaft 2, completing the disassembly of the modular rotor assembly 3. Then, another modular rotor assembly can be removed. When the mounting block 6 on component 3 is inserted into the insertion positioning groove 10, the force on the movable cover 16 is released. Since the return spring 13 is in its natural state, the end of the quick-fixing pin 11 will automatically extend into the corresponding insertion positioning groove 10 under the elastic force of the return spring 13 and be inserted into the slot 7 of the mounting block 6, thereby fixing the mounting block 6 in the insertion positioning groove 10, thus fixing the modular rotor assembly 3 and the power spindle 2. After fixing, the force on the clamping positioning block 20 is released, and the tension spring 19, which is in a compressed state, returns to its original state. The tension spring 19 drives the clamping positioning block 20 to engage with the locking positioning groove 17, thereby locking the movable cover 16, further improving the stability between the modular rotor assembly 3 and the power spindle 2, thus facilitating the quick replacement of the modular rotor assembly 3.

[0029] like Figure 5 As shown, in some embodiments, the return spring 13 is movably sleeved on the corresponding quick-fixing pin 11.

[0030] like Figure 6 As shown, in some embodiments, a locking positioning groove 17 is provided on one side of the fixed support plate 8, and a T-shaped rod 18 is provided on the movable cover 16. The end of the T-shaped rod 18 extends to the outside of the movable cover 16 and is welded with a clamping positioning block 20. The clamping positioning block 20 is engaged with the locking positioning groove 17. A tension spring 19 is fixedly connected between one side of the inner wall of the T-shaped rod 18 and one side of the inner wall of the movable cover 16. The tension spring 19 is movably sleeved on the T-shaped rod 18.

[0031] When the movable cover 16 is released, the locking positioning block 20 is pulled, which drives the T-shaped rod 18 to move. During the movement, the T-shaped rod 18 compresses the tension spring 19. At the same time, the locking positioning block 20 separates from the locking positioning groove 17, thereby releasing the locking state of the movable cover 16.

[0032] like Figure 1 As shown, in some embodiments, the right side of the screw pump main body 1 is in movable contact with the outer casing 4, which is fitted onto the modular rotor assembly 3.

[0033] like Figure 1 As shown, in some embodiments, a connecting transition plate 21 is welded to one side of the housing 4, and the connecting transition plate 21 is threadedly connected to the screw pump main body 1 by a plurality of fastening bolts 22.

[0034] The connection transition plate 21 serves as a connection.

[0035] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A modular screw pump rotor assembly with quick replacement capability, comprising a screw pump main body (1), characterized in that: The screw pump main body (1) is provided with a power spindle (2). A modular rotor assembly (3) is provided on one side of the power spindle (2). A mounting plate (5) is welded to the end of the modular rotor assembly (3). A plurality of mounting blocks (6) are welded in a ring shape on one side of the mounting plate (5). A slot (7) is provided on one side of the mounting block (6). A fixed support plate (8) is fixedly connected to the end of the power spindle (2). A plurality of cavities (9) and a plurality of insertion positioning slots (10) are provided on the fixed support plate (8). The insertion positioning slots (10) are engaged with the corresponding mounting blocks (6). A quick-fixing pin (11) is provided in the cavity (9). The end of the quick-fixing pin (11) extends into the corresponding insertion positioning groove (10) and is engaged with the slot (7). A limit stop ring (12) is welded on the quick-fixing pin (11). A return spring (13) is fixedly connected between one side of the limit stop ring (12) and one side of the inner wall of the corresponding cavity (9). A guide wheel (14) is rotatably connected to one side of the inner wall of the cavity (9). A flexible traction steel rope (15) is fixedly connected to the other end of the quick-fixing pin (11). The end of the flexible traction steel rope (15) passes around one side of the corresponding guide wheel (14) and extends to the outside of the fixed support plate (8) and is fixedly connected to a movable cover (16). The movable cover (16) is sleeved on the power spindle (2).

2. The modular screw pump rotor assembly with quick replacement according to claim 1, characterized in that: The return spring (13) is movably sleeved on the corresponding quick-fixing pin (11).

3. The modular screw pump rotor assembly with quick replacement according to claim 2, characterized in that: The fixed support plate (8) has a locking positioning groove (17) on one side, and the movable cover (16) has a T-shaped rod (18).

4. The modular screw pump rotor assembly with quick replacement according to claim 3, characterized in that: The end of the T-shaped rod (18) extends to the outside of the movable cover (16) and is welded with a clamping positioning block (20), which is engaged with the locking positioning groove (17).

5. A modular screw pump rotor assembly with quick replacement according to claim 4, characterized in that: A tension spring (19) is fixedly connected between one inner wall of the T-shaped rod (18) and one inner wall of the movable cover (16), and the tension spring (19) is movably sleeved on the T-shaped rod (18).

6. A modular screw pump rotor assembly with quick replacement according to claim 5, characterized in that: The right side of the main body (1) of the screw pump has a housing (4) in contact with it, and the housing (4) is fitted onto the modular rotor assembly (3).

7. A modular screw pump rotor assembly with quick replacement according to claim 6, characterized in that: A connecting transition plate (21) is welded to one side of the outer casing (4), and the connecting transition plate (21) is threadedly connected to the screw pump main body (1) by a plurality of fastening bolts (22).

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