Control equipment for main and standby pumps

Abstract

The utility model discloses control equipment for main and standby pumps, which relates to the technical field of pump body control and comprises a control box, a connecting component and a driving component, two mechanical push rods are arranged in the control box, the connecting component is connected with the two mechanical push rods, and the driving component drives the connecting component to control the two mechanical push rods to move oppositely. The mechanical push rod comprises a main valve and a standby valve. When the main valve needs to be closed, the standby valve needs to be opened and the main valve needs to be closed, the two connecting assemblies are driven by the driving assembly to synchronously and oppositely move, the standby valve is opened at the moment when the main valve is closed, and rapid switching between the main pump and the standby pump is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of pump control, and in particular to a control device for main and standby pumps. Background Technology

[0002] In many industrial and civil sectors, such as water supply systems, fire protection systems, and HVAC systems, a main and standby pump configuration is typically used to ensure continuous and reliable system operation. The main pump serves as the primary operating pump, bearing the load during normal operation; while the standby pump is in a standby state and can be quickly put into operation when the main pump fails or cannot meet the demand, ensuring uninterrupted system operation.

[0003] Most existing main and standby pump controls rely on intelligent and automated control. In the event of a network outage or power failure, operators need to mechanically switch between the main and standby pumps. However, traditional mechanical control methods require turning the main pump on or off first, and then turning the standby pump on or off, which is not flexible enough. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing main and backup pump control devices, which lack flexibility in use, and to propose a control device for main and backup pumps.

[0005] To address the problems existing in the prior art, the present invention adopts the following technical solution:

[0006] A control device for a main and standby pump includes a control box, a connecting assembly, and a drive assembly. The control box contains two mechanical push rods, and the connecting assembly is connected to both mechanical push rods. The drive assembly controls the two mechanical push rods to move in opposite directions by driving the connecting assembly. Each mechanical push rod includes a main valve and a standby valve.

[0007] Preferably, the connecting assembly includes two fixed frames and two circular blocks. Each fixed frame has a movable block slidably disposed therein. The ends of the movable blocks are rotatably connected to the circular blocks. The grooves at the ends of the circular blocks are connected to the mechanical push rods. Limiting blocks are fixedly disposed on both sides of the movable blocks. The limiting blocks are slidably connected to the grooves on both sides of the fixed frames. A spring is fixedly disposed at the end of the movable block away from the circular blocks. One end of the spring is fixedly connected to the inner wall of the fixed frames.

[0008] Preferably, the drive assembly includes a gear, two toothed plates, and two limiting members. Both sides of the gear mesh with the toothed plates, one end of each toothed plate is fixedly connected to the outer wall of the fixed frame, a central shaft is fixedly provided in the middle of the gear, and the limiting members are all connected to the fixed frame.

[0009] Preferably, the outer wall of each limiting block is provided with a rotating plate, and two connecting blocks are fixedly provided on one side of the outer wall of each fixing frame. A pull ring is fixedly provided at the lower end of the rotating plate, and the two sides of the outer wall of the rotating plate are in contact with the inner side of the connecting block.

[0010] Preferably, the connecting block has a locking block fixed on both sides of its inner wall, and the locking block is made of rubber.

[0011] Preferably, a circular shaft is fixedly provided at the end of the circular block away from the groove, and one end of the circular shaft is rotatably connected to the movable block.

[0012] Preferably, the limiting member includes two pairs of support rods and two rectangular rods, both ends of the two rectangular rods are fixedly connected to the support rods, one end of the support rod is fixedly connected to the inner wall of the control box, and the rectangular rods pass through the fixing frame.

[0013] Preferably, a bushing is fixedly provided at the end of the central shaft away from the gear, and the bushing is fixedly connected to the inner wall of the control box.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. In this utility model, when it is necessary to close the main valve and open the standby valve, the two connecting components are driven by the drive component to move synchronously and in opposite directions. The standby valve opens at the moment the main valve is closed, which facilitates rapid switching between the main and standby pumps.

[0016] 2. In this utility model, the moving block is pushed by a spring so that the circular block groove at the end of the moving block is inserted into the outer wall of the mechanical push rod. It can be connected or separated from the mechanical push rod. It can be used when both the main and backup valves are closed, thus improving its practicality. Attached Figure Description

[0017] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the drive component structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the connecting component structure of this utility model;

[0021] Figure 4 For the present utility model Figure 3 Enlarged structural diagram at point A in the middle.

[0022] The following are the components listed in the diagram: 1. Control box; 11. Mechanical push rod; 111. Main valve; 112. Backup valve; 2. Connecting assembly; 21. Fixed frame; 22. Moving block; 23. Circular block; 24. Limiting block; 25. Spring; 3. Drive assembly; 31. Gear; 32. Gear plate; 33. Central shaft; 34. Bushing; 35. Limiting element; 351. Support rod; 352. Rectangular rod; 4. Rotating plate; 41. Connecting block; 42. Pull ring; 5. Clamping block; 6. Round shaft. 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 of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Example: This example provides a control device for main and standby pumps. See [link / reference] Figure 1-4 Specifically, it includes a control box 1, a connecting component 2, and a drive component 3. The control box 1 is equipped with two mechanical push rods 11. The connecting component 2 is connected to both mechanical push rods 11. The drive component 3 controls the two mechanical push rods 11 to move in opposite directions by driving the connecting component 2. The mechanical push rod 11 includes a main valve 111 and a backup valve 112.

[0025] The main valve 111 and the standby valve 112 are used to control the main pump and the standby pump, respectively. They are connected to the main valve 111 and the standby valve 112 through the connecting assembly 2. When it is necessary to close the main valve 111 and open the standby valve 112, the two connecting assemblies 2 are driven by the drive assembly 3 to move synchronously and in opposite directions. The standby valve 112 opens at the moment the main valve 111 closes, which facilitates quick switching between the main and standby pumps. The connecting assembly 2 itself can move laterally and can be connected or separated from the mechanical push rod 11, which is convenient for use when both the main and standby valves are closed.

[0026] In the specific implementation process, such as Figure 2 and Figure 3 As shown, the connecting component 2 includes two fixed frames 21 and two circular blocks 23. Each fixed frame 21 has a movable block 22 slidably disposed inside it. The ends of the movable blocks 22 are rotatably connected to the circular blocks 23. The grooves at the ends of the circular blocks 23 are connected to the mechanical push rods 11. Limiting blocks 24 are fixedly disposed on both sides of the movable blocks 22. The limiting blocks 24 are slidably connected to the grooves on both sides of the fixed frames 21. A spring 25 is fixedly disposed on the end of the movable block 22 away from the circular blocks 23. One end of the spring 25 is fixedly connected to the inner wall of the fixed frame 21. A circular shaft 6 is fixedly disposed on the end of the circular block 23 away from the groove. One end of the circular shaft 6 is rotatably connected to the movable block 22.

[0027] The moving block 22 is pushed by the spring 25, so that the groove of the circular block 23 at the end of the moving block 22 is inserted into the outer wall of the mechanical push rod 11. The circular block 23 is rotatably connected to the moving block 22 through the circular shaft 6. When the mechanical push rod 11 is opened or closed, the circular block 23 will rotate with the movement of the mechanical push rod 11, and the circular block 23 will slide on the mechanical push rod 11 to adapt to the movement of the mechanical push rod 11 when it is turned on or off.

[0028] In the specific implementation process, such as Figure 1 and Figure 2 As shown, the drive assembly 3 includes a gear 31, two toothed plates 32, and two limiting members 35. Both sides of the gear 31 mesh with the toothed plates 32. One end of each toothed plate 32 is fixedly connected to the outer wall of the fixed frame 21. A central shaft 33 is fixedly provided in the middle of the gear 31. A bushing 34 is fixedly provided at the end of the central shaft 33 away from the gear 31. The bushing 34 is fixedly connected to the inner wall of the control box 1. The limiting members 35 are all connected to the fixed frame 21. The limiting members 35 include two pairs of support rods 351 and two rectangular rods 352. Both ends of the two rectangular rods 352 are fixedly connected to the support rods 351. One end of the support rods 351 is fixedly connected to the inner wall of the control box 1. The rectangular rods 352 all pass through the fixed frame 21.

[0029] When a mechanical push rod 11 moves, it will drive a fixed frame 21 to move. The fixed frame 21 will drive the toothed plate 32 to move synchronously. The toothed plate 32 drives another toothed plate 32 to move through the gear 31. The other toothed plate 32 will drive the connected fixed frame 21 to move, so that the two fixed frames 21 move towards each other, realizing rapid switching between the main and standby pumps. When the fixed frame 21 moves, it is restricted by the rectangular rod 352, so that the fixed frame 21 can only move vertically up and down.

[0030] In the specific implementation process, such as Figure 3 and Figure 4 As shown, the outer wall of the limiting block 24 is provided with a rotating plate 4, and two connecting blocks 41 are fixedly provided on one side of the outer wall of the fixed frame 21. A pull ring 42 is fixedly provided at the lower end of the rotating plate 4. The two sides of the outer wall of the rotating plate 4 are in contact with the inner side of the connecting block 41. The two sides of the inner wall of the connecting block 41 are fixedly provided with a locking block 5, which is made of rubber.

[0031] When the circular block 23 is connected to the mechanical push rod 11, the rotating plate 4 is rotated so that the rotating plate 4 is located in the connecting block 41 on the side close to the circular block 23. The rotating plate 4 in the connecting block 41 is blocked by the locking block 5 to prevent the moving block 22 from sliding freely along the fixed frame 21. When the circular block 23 is not connected to the mechanical push rod 11, the moving block 22 is pushed to squeeze the spring 25, so that the rotating plate 4 is locked into another connecting block 41, thereby positioning the moving block 22.

[0032] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A control device for main and standby pumps, characterized in that: The device includes a control box (1), a connecting assembly (2), and a drive assembly (3). The control box (1) contains two mechanical push rods (11). The connecting assembly (2) is connected to both mechanical push rods (11). The drive assembly (3) controls the two mechanical push rods (11) to move in opposite directions by driving the connecting assembly (2). Each mechanical push rod (11) includes a main valve (111) and a backup valve (112).

2. The control device for main and standby pumps according to claim 1, characterized in that: The connecting component (2) includes two fixed frames (21) and two circular blocks (23). Each fixed frame (21) has a movable block (22) slidably disposed inside it. The ends of the movable blocks (22) are rotatably connected to the circular blocks (23). The grooves at the ends of the circular blocks (23) are connected to the mechanical push rod (11). Limiting blocks (24) are fixedly disposed on both sides of the movable blocks (22). The limiting blocks (24) are slidably connected to the grooves on both sides of the fixed frames (21). A spring (25) is fixedly disposed at the end of the movable block (22) away from the circular blocks (23). One end of the spring (25) is fixedly connected to the inner wall of the fixed frame (21).

3. A control device for main and standby pumps according to claim 2, characterized in that: The drive assembly (3) includes a gear (31), two toothed plates (32) and two limiting members (35). Both sides of the gear (31) mesh with the toothed plates (32). One end of each toothed plate (32) is fixedly connected to the outer wall of the fixed frame (21). A central shaft (33) is fixedly provided in the middle of the gear (31). The limiting members (35) are all connected to the fixed frame (21).

4. A control device for main and standby pumps according to claim 2, characterized in that: The outer wall of the limiting block (24) is provided with a rotating plate (4), and the outer wall of the fixed frame (21) is provided with two connecting blocks (41) on one side. The lower end of the rotating plate (4) is provided with a pull ring (42), and the two sides of the outer wall of the rotating plate (4) are in contact with the inner side of the connecting block (41).

5. A control device for main and standby pumps according to claim 4, characterized in that: Both sides of the inner wall of the connecting block (41) are fixed with a locking block (5), which is made of rubber.

6. A control device for main and standby pumps according to claim 2, characterized in that: The circular block (23) has a fixed circular shaft (6) at the end away from the groove, and one end of the circular shaft (6) is rotatably connected to the movable block (22).

7. A control device for main and standby pumps according to claim 3, characterized in that: The limiting member (35) includes two pairs of support rods (351) and two rectangular rods (352). Both ends of the two rectangular rods (352) are fixedly connected to the support rods (351). One end of the support rods (351) is fixedly connected to the inner wall of the control box (1). The rectangular rods (352) all pass through the fixed frame (21).

8. A control device for main and standby pumps according to claim 3, characterized in that: A bushing (34) is fixedly provided at the end of the central shaft (33) away from the gear (31), and the bushing (34) is fixedly connected to the inner wall of the control box (1).

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