Water pump forward and reverse rotation detection device convenient to install

Abstract

The utility model discloses a water pump forward and reverse rotation detection device convenient to install, which belongs to the technical field of water pump rotation detection and comprises a frame body, a flow channel for water flow to pass through is arranged on the frame body, two ends of the flow channel are respectively provided with a flange plate, the two flange plates are fixedly connected with the frame body, and a rotating shaft is arranged in the flow channel and is vertically arranged. A baffle is arranged on the outer side face of the rotating shaft, the plane where the baffle is located is perpendicular to the flow direction of the flow channel, one end of the rotating shaft penetrates through the frame body, and the end, penetrating through the frame body, of the rotating shaft is fixedly connected with a shifting rod; the shifting rod can make contact with the forward rotation detection end and the reverse rotation detection end, the limiting assembly is installed on the rotating shaft, installation can be convenient, and forward rotation and reverse rotation of the water pump can be conveniently detected.

Description

Technical Field

[0001] This utility model relates to the field of water pump rotation detection technology, and more specifically, to a water pump forward and reverse rotation detection device that is easy to install. Background Technology

[0002] Large vertical electric water pump units generally require anti-reverse rotation detection devices. This is because after the unit stops, if the check valve on the pump outlet pipe is not tight (or leaks backwards after prolonged use) or fails to close in time, water can backflow into the pump, causing it to reverse. This can lead to problems such as impeller nut loosening and seal damage, and more seriously, it can turn the motor into a generator, damaging the motor. Furthermore, the change in the direction of axial thrust can damage the pump and motor bearings. Current methods for detecting forward and reverse rotation of water pumps involve detecting the rotation angle and analyzing electrical signals. However, these devices require the detection end to be installed on the pump shaft, making installation cumbersome, and the entire unit is prone to damage and difficult to repair. To address these issues, a solution is proposed below. Utility Model Content

[0003] In view of the problems existing in the prior art, the purpose of this utility model is to provide a water pump forward and reverse rotation detection device that is easy to install and convenient to detect the forward and reverse rotation of the water pump.

[0004] To solve the above problems, the present invention adopts the following technical solution.

[0005] A water pump forward / reverse rotation detection device that is easy to install includes a frame with a flow channel through which water flows. Flanges are provided at both ends of the flow channel, and the two flanges are fixedly connected to the frame. A rotating shaft is disposed inside the flow channel, the shaft being vertically arranged and rotatably engaged with the frame. A baffle is provided on the outer side of the shaft, the plane of which is perpendicular to the flow direction of the flow channel. One end of the rotating shaft passes through the frame, and a lever is fixedly connected to the end of the shaft passing through the frame. A forward rotation detection end and a reverse rotation detection end are symmetrically installed on the top of the frame, and the lever can contact the forward rotation detection end and the reverse rotation detection end respectively. A limit component is installed on the rotating shaft.

[0006] Preferably, the forward rotation detection end includes a trigger switch, an indicator light, and a mounting box. The trigger switch is mounted on one side of the mounting box, and the indicator light is mounted on the top of the mounting box. The trigger switch and the indicator light are connected in series. The forward rotation detection end and the reverse rotation detection end have the same structure.

[0007] Preferably, the forward rotation detection terminal and the reverse rotation detection terminal are connected to the mains power supply in parallel.

[0008] Preferably, the limiting component includes a gear, a rack, and a top box. The top box is mounted on the frame, the rack is arranged horizontally and slidably inside the top box, the gear is sleeved on the rotating shaft, and the rack and gear mesh with each other. The distance from both ends of the rack to the sides of the top box is one-quarter of the arc length of the gear.

[0009] Preferably, the top box has openings at both ends, and a spring is inserted inside the opening. One end of the spring is in contact with one end of the rack, and the other end of the spring is provided with a spring seat, which is fixedly connected to the side of the top box.

[0010] Preferably, the top box has a horizontally arranged guide rail inside, the guide rail is fixedly connected to the inner side of the top box, and the rack has a guide groove on the side near the guide rail, the guide groove and the guide rail are slidably engaged.

[0011] Preferably, the frame has an open end, and a sealing door is hinged inside the open end.

[0012] Compared with existing technologies, the advantages of this utility model are:

[0013] 1. The flange in this solution facilitates the connection of the frame to the water pump and water pipes. The flange design makes installation convenient. When the water pump is working, it drives the liquid flow inside the flow channel. The different directions of the water flow inside the flow channel will drive the baffle and the rotating shaft to rotate in different directions, thereby triggering the forward or reverse detection end of the lever. Based on the triggering status of the forward and reverse detection ends, it can be determined whether the water pump is rotating in the forward or reverse direction. The limit component can control the rotation angle of the rotating shaft to avoid excessive rotation angle.

[0014] 2. By toggling the trigger switch with the lever, the trigger switch connects to the circuit containing the indicator light.

[0015] Third, the parallel design can ensure the independent operation of the forward and reverse detection ends.

[0016] 4. The rotation of the shaft will drive the gear to rotate. The rotation of the gear will drive the rack to move, and the rack will reach the side of the top box to complete the limit. The distance between the two ends of the rack and the sides of the top box is one-quarter of the arc length of the gear. The angle for controlling the forward and reverse rotation of the shaft is 90 degrees.

[0017] Fifth, the addition of springs can be used to control the reset of the rack, thereby driving the rotating shaft and the baffle to reset. The design of two springs can ensure the stability of the baffle reset.

[0018] VI. The design of the guide rail and guide groove can ensure the sliding direction of the rack and prevent separation. On the other hand, it can limit and guide the movement of the rack.

[0019] 7. The open end allows users to easily maintain the inside of the frame, while the sealed door provides a sealing function. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the connection structure of the water pump, frame and water pipe of this utility model;

[0021] Figure 2 This is a side view of the frame structure of this utility model;

[0022] Figure 3 This is a cross-sectional structural schematic diagram of the top view of the top box of this utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the rotating shaft of this utility model after rotation;

[0024] Figure 5 This is a cross-sectional view of the top box of this utility model.

[0025] Figure 6 This is a schematic diagram of the parallel connection of the forward rotation detection end and the reverse rotation detection end of this utility model.

[0026] The following are the labels in the diagram: 1. Frame; 2. Flow channel; 3. Flange; 4. Shaft; 5. Baffle; 6. Lever; 7. Forward rotation detection end; 8. Reverse rotation detection end; 9. Limiting component; 10. Trigger switch; 11. Indicator light; 12. Mounting box; 13. Gear; 14. Rack; 15. Top box; 16. Through port; 17. Spring; 18. Spring seat; 19. Guide rail; 20. Guide groove; 21. Open end; 22. Sealing door; 23. Water pump; 24. Water pipe. Detailed Implementation

[0027] Example 1:

[0028] Please see Figure 1-6 A water pump forward and reverse rotation detection device that is easy to install includes a frame 1 in the shape of a round tube, a flow channel 2 through which water flows through the frame 1, and flanges 3 at both ends of the flow channel 2. The two flanges 3 are fixedly connected to the frame 1. The flanges 3 facilitate the connection of the frame 1 to the pipeline of the water pump 23 and the water pipe 24. The flange design facilitates installation.

[0029] A rotating shaft 4 is installed inside the flow channel 2. The rotating shaft 4 is vertically arranged and rotates in conjunction with the frame 1. A baffle 5 is installed on the outer side of the rotating shaft 4. The plane of the baffle 5 is perpendicular to the flow direction of the flow channel 2. One end of the rotating shaft 4 passes through the frame 1, and a lever 6 is fixedly connected to the end of the rotating shaft 4 that passes through the frame 1. The lever 6 and the baffle 5 are located on the same vertical plane. The forward and reverse rotation of the water pump 23 will cause the flow direction of the liquid inside the flow channel 2 to change, which will cause the rotation direction of the rotating shaft 4 to change. That is, the forward and reverse rotation of the water pump 23 is determined by the different rotation directions of the lever 6. The top of body 1 is symmetrically equipped with a forward rotation detection end 7 and a reverse rotation detection end 8. The line connecting the forward rotation detection end 7 and the reverse rotation detection end 8 is arranged along the axial direction of the flow channel 2. The forward rotation detection end 7 and the reverse rotation detection end 8 have the same structure. The lever 6 is located between the forward rotation detection end 7 and the reverse rotation detection end 8, and the orientation of the lever 6 is perpendicular to the line connecting the forward rotation detection end 7 and the reverse rotation detection end 8. The forward rotation detection end 7 and the reverse rotation detection end 8 are connected in parallel to the mains power. The parallel connection can ensure the independent normal operation of the forward rotation detection end 7 and the reverse rotation detection end 8. The mains power supply is more stable.

[0030] The forward rotation detection end 7 includes a trigger switch 10, an indicator light 11, and a mounting box 12. The mounting box 12 is fixed to the top of the frame 1. The trigger switch 10 is installed on one side of the mounting box 12, and the indicator light 11 is installed on the top of the mounting box 12. The trigger switch 10 and the indicator light 11 are connected in series. The trigger switch 10 can be closed by the lever 6. When the trigger switch 10 is closed, the indicator light 11 is connected to the mains power circuit, so that the direction of water flow can be determined. The direction of water flow can be used to determine the forward and reverse rotation of the motor. At the same time, the indicator light 11 of the forward rotation detection end 7 and the indicator light 11 of the reverse rotation detection end 8 are different colors, which makes it convenient for users to distinguish them by color.

[0031] A limiting component 9 is installed on the rotating shaft 4. The limiting component 9 includes a gear 13, a rack 14, and a top box 15. The top box 15 is installed on the frame 1. The forward rotation detection end 7 and the reverse rotation detection end 8 are located inside the top box 15. The indicator light 11 passes through the side of the top box 15 for easy observation by the user. The top box 15 can isolate and protect the forward rotation detection end 7, the reverse rotation detection end 8, and the lever 6, avoiding deviations in experimental results caused by accidental external contact. The frame 1 has an opening end 21, and a sealing door 22 is hinged inside the opening end 21. The opening end 21 facilitates maintenance of the components inside the frame 1 by the user. The sealing door 22 provides a sealing effect under normal conditions, preventing impurities from falling into the frame 1 and extending its service life. The rack 14 is arranged horizontally, and a horizontal cloth is provided inside the top box 15. The guide rail 19 is fixedly connected to the inner side of the top box 15. A guide groove 20 is provided on the side of the rack 14 near the guide rail 19. The guide groove 20 and the guide rail 19 are slidably engaged. The engagement of the guide rail 19 and the guide groove 20 serves two purposes: firstly, it guides the movement of the rack 14, allowing the rack 14 to move along the direction of the guide rail 19; secondly, the engagement of the guide groove 20 and the guide rail 19 prevents the rack 14 from separating from the frame 1. The gear 13 is sleeved on the rotating shaft 4 and is fixedly connected to the rotating shaft 4. The rack 14 and the gear 13 mesh with each other. The distance from both ends of the rack 14 to the sides of the top box 15 is one-quarter of the arc length of the gear 13. By controlling the distance between the rack 14 and the frame, the rotation angle of the gear 13 can be controlled, thereby controlling the rotation angle of the rotating shaft 4.

[0032] The top box 15 has openings 16 at both ends, and springs 17 are inserted inside the openings 16. One end of the spring 17 is in contact with one end of the rack 14, and the other end of the spring 17 is provided with a spring seat 18. The spring seat 18 is fixedly connected to the side of the top box 15. The openings 16 facilitate the springs 17 at both ends to control the reset of the rack 14, realizing automatic reset and avoiding the trouble of manual reset. At the same time, it can ensure the efficiency of reset. The design of double springs 17 can ensure the stability of the rack 14 reset, and can also ensure that the rack 14 moves to the middle position of the frame 1.

[0033] Working principle:

[0034] In use, connect the frame 1 between the water pump 23 and the water pipe 24. At this time, the forward rotation detection end 7 is close to the water pump 23 end, and the reverse rotation detection end 8 is close to the water pipe 24 end. Simultaneously connect both the forward rotation detection end 7 and the reverse rotation detection end 8 to the mains power. When the water pump 23 starts working, it will drive the water flow from the direction of the water pump 23 towards the direction of the water pipe 24. When the water flow enters the flow channel 2, it will push the baffle 5. The baffle 5, under force, will rotate around the rotating shaft 4 towards the direction of the water pipe 24. The baffle 5 will rotate 90 degrees until the direction of the baffle 5 is parallel to the direction of the water flow. Simultaneously, the rotating shaft 4 will drive the lever 6 to rotate. When the rotating shaft 4 rotates 90 degrees, the lever 6 will act on the trigger switch 10 of the forward rotation detection end 7, connecting the indicator light 11 of the forward rotation detection end 7 and the trigger switch 10 to the mains power. Thus, the indicator light 11 of the forward rotation detection end 7 will be powered on and illuminate, indicating that the water pump 23 is rotating forward. Simultaneously, the rotating shaft 4 will rotate... The rotating shaft 4 drives the gear 13 to rotate, which in turn drives the meshing rack 14 to move. Since the rack 14 slides along the guide rail 19 through the guide groove 20, the rack 14 moves along the guide rail 19. When the rotating shaft 4 drives the gear 13 to rotate 90 degrees, the rack 14 will just abut against the side of the top box 15, thus limiting the rack 14 through the side of the top box 15. This prevents the trigger switch 10 from being subjected to excessive pressure from the lever 6, thus providing protection and extending its service life. When the rack 14 moves, it will cause the springs 17 at both ends to deform, thus generating elastic force. When the water pump 23 stops working, the water flow inside the flow channel 2 stops, the force on the baffle 5 stops, and the elastic force of the springs 17 will drive the rack 14 to reset. In turn, the rack 14 will drive the gear 13 to reset, and the gear 13 will drive the baffle 5 to reset through the rotating shaft 4, facilitating the next test.

[0035] Similarly, when the water pump 23 reverses, the water flow inside the flow channel 2 will move in the opposite direction, that is, drive the baffle 5 to rotate in the opposite direction by 90 degrees. The trigger switch 10 of the reverse detection terminal 8 will be triggered through the rotating shaft 4 and the lever 6. The indicator light 11 of the reverse detection terminal 8 will be connected to the mains power and the indicator light 11 of the reverse detection terminal 8 will light up, indicating to the user that the water pump 23 is in reverse, so that the user can take subsequent actions. Since the two ends of the rack 14 are equidistant from the two sides of the top box 15, when the rack 14 moves in the opposite direction, the rack 14 will still be limited by the side of the top box 15, that is, the protection effect of the reverse detection terminal 8 is guaranteed.

Claims

1. A water pump forward / reverse rotation detection device that is easy to install, characterized in that: The device includes a frame (1), on which a flow channel (2) through which water flows is provided. Flanges (3) are provided at both ends of the flow channel (2), and the two flanges (3) are fixedly connected to the frame (1). A rotating shaft (4) is provided inside the flow channel (2). The rotating shaft (4) is arranged vertically and rotates with the frame (1). A baffle (5) is provided on the outer side of the rotating shaft (4). The plane of the baffle (5) is perpendicular to the flow direction of the flow channel (2). One end of the rotating shaft (4) passes through the frame (1), and a lever (6) is fixedly connected to the end of the rotating shaft (4) that passes through the frame (1). A forward rotation detection end (7) and a reverse rotation detection end (8) are symmetrically installed on the top of the frame (1). The lever (6) can contact the forward rotation detection end (7) and the reverse rotation detection end (8) respectively. A limit component (9) is installed on the rotating shaft (4).

2. The water pump forward / reverse rotation detection device according to claim 1, characterized in that: The forward rotation detection end (7) includes a trigger switch (10), an indicator light (11), and a mounting box (12). The trigger switch (10) is mounted on one side of the mounting box (12), and the indicator light (11) is mounted on the top of the mounting box (12). The trigger switch (10) and the indicator light (11) are connected in series. The forward rotation detection end (7) and the reverse rotation detection end (8) have the same structure.

3. The water pump forward / reverse rotation detection device according to claim 2, characterized in that: The forward rotation detection terminal (7) and the reverse rotation detection terminal (8) are connected to the mains power in parallel.

4. The water pump forward / reverse rotation detection device according to claim 1, characterized in that: The limiting component (9) includes a gear (13), a rack (14), and a top box (15). The top box (15) is mounted on the frame (1). The rack (14) is arranged horizontally and slides inside the top box (15). The gear (13) is sleeved on the rotating shaft (4). The rack (14) and the gear (13) mesh with each other. The distance from both ends of the rack (14) to the sides of the top box (15) is one-quarter the arc length of the gear (13).

5. The water pump forward / reverse rotation detection device according to claim 4, characterized in that: The top box (15) has openings (16) at both ends, and a spring (17) is inserted inside the opening (16). One end of the spring (17) is in contact with one end of the rack (14), and the other end of the spring (17) is provided with a spring seat (18). The spring seat (18) is fixedly connected to the side of the top box (15).

6. The water pump forward / reverse rotation detection device according to claim 4, characterized in that: The top box (15) is provided with a horizontally arranged guide rail (19) inside. The guide rail (19) is fixedly connected to the inner side of the top box (15). The rack (14) has a guide groove (20) on the side near the guide rail (19). The guide groove (20) and the guide rail (19) are slidably engaged.

7. The water pump forward / reverse rotation detection device according to claim 4, characterized in that: The frame (1) has an opening end (21), and a sealing door (22) is hinged inside the opening end (21).

Images