Frequency control device for high-pressure feed pump

Abstract

This utility model belongs to the field of frequency converter technology, and in particular to a frequency converter control device for a high-pressure water pump. It includes a pump body, with a mounting base on the top of the pump body. A frequency converter body is mounted on the top of the mounting base. A mounting through hole is formed on the inner wall of the top of the mounting base, and rectangular slots are formed on both sides of the inner wall of the mounting through hole. This utility model utilizes a U-shaped plate, which, through a connecting column, drives a moving plate to move. The moving plate slides on a limiting hole, and during its movement, a flexible steel cable drives a corresponding T-shaped locking pin to move. The T-shaped locking pin slides on a corresponding support block and stretches a tension spring. Simultaneously, the T-shaped locking pin causes a rolling ball to separate from the locking groove on the corresponding locking member. Then, the frequency converter body moves, and the frequency converter body, through a disc, drives the locking member to separate from the mounting base. This facilitates quick separation of the frequency converter body from the pump body, greatly improving equipment maintenance efficiency and reducing maintenance costs.

Description

Technical Field

[0001] This utility model relates to the field of frequency converter technology, specifically to a frequency conversion control device for a high-pressure water pump. Background Technology

[0002] High-pressure feedwater pumps play a crucial role in industrial production and the operation of various large-scale facilities. They are one of the core pieces of equipment ensuring stable fluid delivery and maintaining normal system operation. With the continuous improvement of industrial automation and increasing emphasis on energy efficiency, higher demands are placed on the control precision and operational flexibility of high-pressure feedwater pumps. Variable frequency drive (VFD) technology, as an advanced motor control method, has been widely applied in the field of high-pressure feedwater pump control. By changing the motor's power supply frequency, precise adjustment of the pump speed can be achieved, thereby accurately controlling the pump's flow rate and pressure. This effectively avoids the energy loss caused by valve adjustment in traditional constant-speed operation, significantly improving energy efficiency and reducing operating costs.

[0003] However, current connection methods between frequency converters and water pumps lack flexibility, making disassembly and reassembly difficult. This results in a cumbersome installation process and requires a high level of technical expertise from installers. When the frequency converter or water pump malfunctions and needs repair or replacement, the inability to quickly and easily separate the two often necessitates significant time and manpower for disassembly. This not only increases maintenance costs but may also lead to prolonged equipment downtime, affecting the normal operation of the entire system. Therefore, we propose a frequency converter control device for high-pressure water pumps to address these issues. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a variable frequency control device for a high-pressure water pump, which solves 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 variable frequency control device for a high-pressure water pump includes a pump body. A mounting base is provided on the top of the pump body. A frequency converter body is clamped onto the top of the mounting base. A mounting through hole is formed on the inner wall of the top of the mounting base. Rectangular slots are formed on the inner walls of both sides of the mounting through hole. Two support blocks are welded to the inner wall of the top of the mounting base. T-shaped locking pins are slidably connected to the support blocks. A ball bearing is embedded at the end of each T-shaped locking pin. A tension spring is welded between one inner wall of the T-shaped locking pin and one side of the corresponding support block. Fixed springs are rotatably connected to the inner walls of both sides of the mounting base. The pulley has a flexible steel cable fixedly connected to one side of the T-shaped locking pin. Limiting holes are opened on both inner walls of the mounting base. A movable plate is slidably connected to the limiting holes. The end of the flexible steel cable passes over one side of the corresponding fixed pulley and is fixedly connected to the top of the movable plate. A connecting column is welded to the top of the movable plate. The top of the two connecting columns is welded to the same U-shaped plate. A disc is fixedly connected to the bottom of the inverter body. A snap-fit ​​component is welded to both sides of the disc. A snap-fit ​​groove is opened on the snap-fit ​​component, and the snap-fit ​​groove is engaged with the corresponding T-shaped locking pin.

[0009] Furthermore, the tension spring is movably sleeved on the corresponding T-shaped locking pin.

[0010] Furthermore, a limiting post is provided on the bottom inner wall of the mounting base, and a limiting groove is provided on the disc, the limiting groove being engaged with the limiting post.

[0011] Furthermore, sliding grooves are provided on both sides of the limiting post, and sliding rods are welded between the inner walls of the two sides of the sliding grooves.

[0012] Furthermore, the slide rod is slidably connected to the corresponding movable plate, and a spring is welded between the bottom of the movable plate and the bottom inner wall of the corresponding slide groove, and the spring is movably sleeved on the corresponding slide rod.

[0013] Furthermore, the support block is provided with positioning holes, and the support block is slidably connected to the corresponding T-shaped locking pin through the positioning holes.

[0014] Furthermore, the snap-fit ​​component is trapezoidal in shape.

[0015] (III) Beneficial Effects

[0016] Compared with the prior art, this utility model provides a variable frequency control device for a high-pressure water pump, which has the following advantages:

[0017] This invention utilizes a U-shaped plate, which, when pressed, moves a movable plate via a connecting column. The movable plate slides on a limiting hole, and during its movement, a flexible steel cable moves a corresponding T-shaped locking pin. The T-shaped locking pin slides on a corresponding support block and stretches a tension spring. Simultaneously, the T-shaped locking pin causes a rolling ball to separate from the locking groove on the corresponding locking component. Next, the inverter body moves, and the inverter body, via a disc, causes the locking component to separate from the mounting base. This facilitates quick separation of the inverter body from the pump body, significantly improving equipment maintenance efficiency and reducing repair costs. 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 inverter body of this utility model after removal;

[0020] Figure 3 This is a three-dimensional structural diagram of the inverter body, disc, and snap-fit ​​connection of this utility model;

[0021] Figure 4 This is a three-dimensional structural diagram of the installation base of this utility model cut open.

[0022] In the diagram: 1. Pump body; 2. Mounting base; 3. Inverter body; 4. Mounting through hole; 5. Rectangular slot; 6. Support block; 7. T-shaped locking pin; 8. Ball bearing; 9. Tension spring; 10. Fixed pulley; 11. Flexible steel cable; 12. Limiting hole; 13. Moving plate; 14. Connecting column; 15. U-shaped plate; 16. Disc; 17. Snap-fit ​​component; 18. Snap-fit ​​groove; 19. Limiting post; 20. Slide groove; 21. Slide rod; 22. Spring; 23. Limiting groove. Detailed Implementation

[0023] 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.

[0024] Example

[0025] like Figure 1-4As shown in the figure, an embodiment of the present invention discloses a frequency converter control device for a high-pressure water pump, comprising a pump body 1, a mounting base 2 on the top of the pump body 1, a frequency converter body 3 being fitted onto the top of the mounting base 2, a mounting through hole 4 on the inner wall of the top of the mounting base 2, rectangular slots 5 on both sides of the inner wall of the mounting through hole 4, two support blocks 6 welded to the inner wall of the top of the mounting base 2, T-shaped locking pins 7 slidably connected to the support blocks 6, ball bearings 8 embedded at the ends of the T-shaped locking pins 7, a tension spring 9 welded between one side of the inner wall of the T-shaped locking pin 7 and one side of the corresponding support block 6, and fixed sliding plates rotatably connected to both sides of the inner wall of the mounting base 2. A flexible steel cable 11 is fixedly connected to one side of the wheel 10 and the T-shaped locking pin 7. Limiting holes 12 are opened on both sides of the inner wall of the mounting base 2. A movable plate 13 is slidably connected to the limiting hole 12. The end of the flexible steel cable 11 passes around one side of the corresponding fixed pulley 10 and is fixedly connected to the top of the movable plate 13. A connecting column 14 is welded to the top of the movable plate 13. The top of the two connecting columns 14 is welded with the same U-shaped plate 15. A disc 16 is fixedly connected to the bottom of the inverter body 3. A snap-fit ​​part 17 is welded to both sides of the disc 16. A snap-fit ​​groove 18 is opened on the snap-fit ​​part 17. The snap-fit ​​groove 18 is engaged with the corresponding T-shaped locking pin 7.

[0026] When in use, if it is necessary to disassemble the inverter body 3, press the U-shaped plate 15. The U-shaped plate 15 drives the moving plate 13 to move through the connecting column 14. The moving plate 13 slides on the limiting hole 12. During the movement, the moving plate 13 drives the corresponding T-shaped locking pin 7 to move through the flexible steel cable 11. The T-shaped locking pin 7 slides on the corresponding support block 6 and stretches the tension spring 9. At the same time, the T-shaped locking pin 7 drives the rolling ball 8 to separate from the locking groove 18 on the corresponding locking piece 17. Then, move the inverter body 3. The inverter body 3 drives the locking piece 17 to separate from the mounting base 2 through the disc 16, which facilitates the quick separation of the inverter body 3 from the pump body 1, greatly improving the maintenance efficiency of the equipment and reducing maintenance costs.

[0027] like Figure 4 As shown, in some embodiments, the tension spring 9 is movably sleeved on the corresponding T-shaped locking pin 7.

[0028] like Figure 3 As shown, in some embodiments, a limiting post 19 is provided on the bottom inner wall of the mounting base 2, and a limiting groove 23 is provided on the disc 16, with the limiting groove 23 engaging with the limiting post 19.

[0029] The limiting post 19 positions the disc 16, improving the accuracy of installation.

[0030] like Figure 4As shown, in some embodiments, sliding grooves 20 are provided on both sides of the limiting post 19, and sliding rods 21 are welded between the inner walls of the two sides of the sliding grooves 20. The sliding rods 21 are slidably connected to the corresponding moving plate 13. A spring 22 is welded between the bottom of the moving plate 13 and the bottom inner wall of the corresponding sliding groove 20. The spring 22 is movably sleeved on the corresponding sliding rod 21.

[0031] The movable plate 13 slides on the corresponding slide bar 21. During the movement, the movable plate 13 compresses the corresponding spring 22, and the slide bar 21 limits the movement of the movable plate 13.

[0032] like Figure 4 As shown, in some embodiments, the support block 6 is provided with a positioning hole, and the support block 6 is slidably connected to the corresponding T-shaped locking pin 7 through the positioning hole.

[0033] like Figure 4 As shown, in some embodiments, the snap-fit ​​17 is trapezoidal in shape.

[0034] 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 frequency control device for a high pressure feed water pump comprising a pump body (1), characterized in that: The pump body (1) has a mounting base (2) on its top. The inverter body (3) is clamped on the top of the mounting base (2). The mounting base (2) has a mounting through hole (4) on its top inner wall. The mounting through hole (4) has rectangular slots (5) on both sides of its inner wall. The mounting base (2) has two support blocks (6) welded on its top inner wall. The support blocks (6) are slidably connected to T-shaped locking pins (7). The ends of the T-shaped locking pins (7) are fitted with rolling balls (8). A tension spring (9) is welded between one side of the inner wall of the T-shaped locking pin (7) and one side of the corresponding support block (6). Fixed pulleys (10) are rotatably connected to both sides of the inner wall of the mounting base (2). A flexible pulley is fixedly connected to one side of the T-shaped locking pin (7). The flexible steel cable (11) has limit holes (12) on both sides of the inner wall of the mounting base (2). A movable plate (13) is slidably connected to the limit holes (12). The end of the flexible steel cable (11) passes around one side of the corresponding fixed pulley (10) and is fixedly connected to the top of the movable plate (13). A connecting column (14) is welded to the top of the movable plate (13). The top of the two connecting columns (14) is welded to the same U-shaped plate (15). A disc (16) is fixedly connected to the bottom of the inverter body (3). A snap-fit ​​piece (17) is welded to both sides of the disc (16). A snap-fit ​​groove (18) is opened on the snap-fit ​​piece (17). The snap-fit ​​groove (18) is engaged with the corresponding T-shaped locking pin (7).

2. The frequency control device of a high-pressure feed water pump according to claim 1, characterized by: The tension spring (9) is movably sleeved on the corresponding T-shaped locking pin (7).

3. The frequency control device of a high-pressure feed water pump according to claim 2, characterized in that: A limiting post (19) is provided on the bottom inner wall of the mounting base (2), and a limiting groove (23) is provided on the disc (16). The limiting groove (23) is engaged with the limiting post (19).

4. The frequency control device of a high-pressure feed water pump according to claim 3, characterized in that: The limiting post (19) has a sliding groove (20) on both sides, and a sliding rod (21) is welded between the inner walls of the two sides of the sliding groove (20).

5. The frequency control device of a high-pressure feed water pump according to claim 4, characterized in that: The slide rod (21) is slidably connected to the corresponding movable plate (13). A spring (22) is welded between the bottom of the movable plate (13) and the bottom inner wall of the corresponding slide groove (20). The spring (22) is movably sleeved on the corresponding slide rod (21).

6. The frequency control device of a high-pressure feed water pump according to claim 5, characterized in that: The support block (6) has a positioning hole, and the support block (6) is slidably connected to the corresponding T-shaped locking pin (7) through the positioning hole.

7. The variable frequency control device for a high-pressure water pump according to claim 6, characterized in that: The snap-fit ​​component (17) is trapezoidal in shape.

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