Secondary water supply equipment water pump anti-idling device with alarm function

Abstract

The utility model relates to the technical field of secondary water supply safety protection, in particular to a secondary water supply equipment water pump anti-idling device with an alarm function, which comprises a pressure pump and a flow guide pipe mounted at the output end of the pressure pump, and a control electric box is mounted on one side of the bottom end of the flow guide pipe. The utility model has the advantages that the pressure pump and the flow guide pipe are arranged, the flow guide pipe provides a flow guide channel for water outlet, the pressure sensor is arranged at one end of the extension pipe, the transmission shaft, the first gear and the second gear are arranged in the mounting box, the extension block is arranged at the top end of the second gear, and the rotating speed sensor is arranged on the top surface of the transparent cover; when the pressure pump is in an idling mode, the pressure in the flow guide pipe is reduced, meanwhile, the rotating speed of the impeller is reduced, corresponding detection signals of the rotating speed sensor and signals sent by the pressure sensor to the PLC, then the PLC sends control signals to enable the circuit breaker to disconnect power supply to the pressure pump, meanwhile, the horn gives an alarm to the outside, the overall structure is simple, and the operation is convenient. And popularization and use are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of secondary water supply safety protection, in particular to an anti-air rotation device for a water pump of a secondary water supply device with an alarm function. Background Technique

[0002] With the development of the economy, there are more and more high-rise buildings in cities, which makes the pressure of high-rise water supply greater. At the same time, there are more and more high-rise secondary pressurized water supply devices. Therefore, the subsequent maintenance problems of secondary pressurized water supply devices are becoming more and more prominent. High-rise secondary pressurized water supply devices generally use multi-stage vertical centrifugal pumps. The advantages of this kind of water pump are: compact overall structure, small volume, light weight, low noise, and remarkable energy-saving effect. The disadvantages are: poor self-priming ability and easy to be evacuated. Therefore, during the operation of the centrifugal pump, air rotation is not allowed, and serious impacts may occur once air rotation occurs.

[0003] Air rotation of the water pump will cause serious damage to the water pump. When the water pump is idling, there is no liquid lubrication, which will lead to dry grinding and rapid damage. Based on this, an anti-air rotation device for a water pump of a secondary water supply device with an alarm function is proposed. When the water pump has air rotation, if it can alarm immediately and stop automatically, the safety of the unit can be protected. Content of the Utility Model

[0004] The purpose of the utility model is to overcome the shortcomings of the prior art and provide an anti-air rotation device for a water pump of a secondary water supply device with an alarm function, effectively solving the deficiencies of the prior art.

[0005] To achieve the above purpose, an embodiment of one aspect of the utility model provides an anti-air rotation device for a water pump of a secondary water supply device with an alarm function, including a pressure pump and a diversion pipe installed at its output end. One side of the bottom end of the diversion pipe is provided with a control electric box. Inside the control electric box, a PLC, a circuit breaker and a horn are installed. In the middle of the diversion pipe, an extension pipe is installed, and a pressure sensor is installed inside it. At the top of the diversion pipe, an intermediate pipe is installed, and one side of it protrudes outwards. On the top surface of the intermediate pipe, an installation box is installed, and a closing plate is installed on its top surface. On one side of the installation box, a vertically placed transmission shaft is installed, and an impeller is installed at its top end. At the top end of the transmission shaft, a first gear is installed. On one side of the first gear, a second gear meshing with it is installed. At the top end of the second gear, a protruding block is installed. On the top surface of the closing plate, a transparent cover is installed, and a rotation speed sensor for measuring the rotation speed of the protruding block is installed on its top surface.

[0006] Preferably, according to any of the above solutions, one end of the extension pipe is fixedly connected to the middle of the diversion pipe by welding. A sealing ring is provided between the other end of the extension pipe and the pressure sensor. Using this solution facilitates the stable connection of the extension pipe and the diversion pipe, allowing water to enter the interior of the extension pipe and apply water pressure to the pressure sensor, which enables the pressure sensor to send a signal to the PLC. At the same time, a sealing ring is provided between the other end of the extension pipe and the pressure sensor to ensure the sealing between the two and prevent water leakage.

[0007] Preferably, according to any of the above solutions, one side of the bottom surface of the installation box is a tubular structure and is fixedly connected to the top surface of the intermediate pipe by flange bolts. Using this solution facilitates the user to fixedly connect the installation box and the intermediate pipe. At the same time, the middle part of the intermediate pipe protrudes outward, providing an installation position for the impeller, allowing the water flow to impact the edge position of the impeller, driving the transmission shaft to rotate. After the first gear and the second gear mesh, it drives the protruding block to rotate, and at the same time enables the speed sensor to send a signal to the PLC.

[0008] Preferably, according to any of the above solutions, two bearings are installed in the middle of the transmission shaft, and a sealing ring is installed at the top of the transmission shaft. Using this solution facilitates the stable installation of the transmission shaft inside the tubular structure of the installation box. At the same time, the bearings ensure the stable rotation of the transmission shaft, and the sealing ring seals the top position of the installation box to prevent water from entering the top position of the installation box.

[0009] Preferably, according to any of the above solutions, the circuit breaker, the horn, the pressure sensor, and the speed sensor are all electrically connected to the PLC through wires. Using this solution facilitates the formation of a simple and reliable detection system. The circuit breaker only controls the on-off of the pressure pump, which is convenient for later connecting the PLC, the horn, and the external power supply circuit. When the pressure pump runs idly, the horn can send an alarm to the outside.

[0010] The utility model has the following advantages:

[0011] 1. For the anti-idling device of the water pump in the secondary water supply equipment with an alarm function, by setting a pressure pump and a diversion pipe, the diversion pipe provides a diversion channel for the water outlet. One end of the extension pipe is equipped with a pressure sensor, and a transmission shaft, a first gear, and a second gear are installed inside the installation box. The top of the second gear is equipped with a protruding block, and a speed sensor is installed on the top surface of the transparent cover. When the pressure pump runs idly, the pressure inside the diversion pipe decreases, and at the same time, the rotation speed of the impeller decreases. Correspondingly, the detection signal of the speed sensor and the pressure sensor send signals to the PLC. Subsequently, the PLC sends a control signal to make the circuit breaker disconnect the power supply to the pressure pump, and at the same time, the horn sends an alarm to the outside. The overall structure is simple and convenient for popularization and use.

[0012] 2. The anti-idling device for the water pump of the secondary water supply equipment with an alarm function is provided with an installation box inside which a transmission shaft, a first gear and a second gear are installed. The bottom end of the transmission shaft is installed with an impeller. When the pressure pump pumps water normally, the rotation speed of the impeller always remains at a certain speed. The first gear and the second gear are meshed with each other and have different sizes, so as to convert the rotation speed of the transmission shaft and correspondingly reduce the rotation speed of the protruding block, which is convenient for the user to directly observe its rotation condition through the transparent cover. Description of the Drawings

[0013] Figure 1 It is a schematic structural diagram of the first perspective of the whole utility model;

[0014] Figure 2 It is a schematic structural diagram of the second perspective of the whole utility model;

[0015] Figure 3 It is a schematic sectional view of the whole utility model;

[0016] Figure 4 It is a schematic partial sectional view of the middle pipe of the utility model;

[0017] Figure 5 It is a schematic structural diagram of the transmission shaft of the utility model.

[0018] In the figure: 1 - pressure pump, 2 - pressure sensor, 3 - extension pipe, 4 - diversion pipe, 5 - installation box, 6 - closing plate, 7 - rotation speed sensor, 8 - transparent cover, 9 - middle pipe, 10 - horn, 11 - control electric box, 12 - PLC, 13 - second gear, 14 - protruding block, 15 - first gear, 16 - transmission shaft, 17 - impeller, 18 - circuit breaker. Detailed Embodiment

[0019] The following further describes the present utility model with reference to the drawings, but the protection scope of the present utility model is not limited to the following.

[0020] As Figures 1 to 5As shown in the figure, a water pump anti-idling device for secondary water supply equipment with an alarm function includes a pressure pump 1 and a diversion pipe 4 installed at its output end. On one side of the bottom end of the diversion pipe 4, a control electric box 11 is installed. Inside the control electric box 11, a PLC 12, a circuit breaker 18, and a horn 10 are installed. An extension pipe 3 is installed in the middle of the diversion pipe 4, and a pressure sensor 2 is installed inside it. A middle pipe 9 is installed at the top of the diversion pipe 4, which protrudes outward on one side. An installation box 5 is installed on the top surface of the middle pipe 9, and a closing plate 6 is installed on its top surface. A vertically placed transmission shaft 16 is installed on one side of the installation box 5, and an impeller 17 is installed at its top end. A first gear 15 is installed at the top end of the transmission shaft 16, and a second gear 13 meshing with it is installed on one side of the first gear 15. An extension block 14 is installed at the top end of the second gear 13. A transparent cover 8 is installed on the top surface of the closing plate 6, and a rotation speed sensor 7 for measuring the rotation speed of the extension block 14 is installed on its top surface.

[0021] One end of the extension pipe 3 is fixedly connected to the middle of the diversion pipe 4 by welding. A sealing ring is provided between the other end of the extension pipe 3 and the pressure sensor 2. As an optional technical solution of the present invention, this facilitates the stable connection of the extension pipe 3 and the diversion pipe 4, and water can enter the inside of the extension pipe 3 and apply water pressure to the pressure sensor 2, facilitating the pressure sensor 2 to send a signal to the PLC 12. At the same time, a sealing ring is provided between the other end of the extension pipe 3 and the pressure sensor 2 to ensure the sealing between the two and avoid water leakage.

[0022] One side of the bottom surface of the installation box 5 is a tubular structure and is fixedly connected to the top surface of the middle pipe 9 by flange bolts. As an optional technical solution of the present invention, this facilitates the user to fixedly connect the installation box 5 and the middle pipe 9. At the same time, the middle of the middle pipe 9 protrudes outward, thereby providing an installation position for the impeller 17, enabling the water flow to impact the edge position of the impeller 17, driving the transmission shaft 16 to rotate, driving the extension block 14 to rotate through the meshing of the first gear 15 and the second gear 13, and at the same time enabling the rotation speed sensor 7 to send a signal to the PLC 12.

[0023] Two bearings are installed in the middle of the transmission shaft 16, and a sealing ring is installed at the top end of the transmission shaft 16. As an optional technical solution of the present invention, this facilitates the stable installation of the transmission shaft 16 inside the tubular structure of the installation box 5. At the same time, the bearings ensure the stable rotation of the transmission shaft 16, and the sealing ring seals the top position of the installation box 5 to prevent water from entering the top position of the installation box 5.

[0024] The circuit breaker 18, the horn 10, the pressure sensor 2, and the speed sensor 7 are all electrically connected to the PLC 12 through wires. As an alternative technical solution of the present utility model, it is convenient to form a simple and reliable detection system. The circuit breaker 18 only controls the on-off of the pressure pump 1, which facilitates the subsequent connection of the PLC 12, the horn 10 to the external power supply circuit. When the pressure pump 1 runs idly, the horn 10 can send an alarm to the outside.

[0025] The anti-idling device for the water pump of the secondary water supply equipment with an alarm function needs the following steps when in use:

[0026] 1) When in use, when the pressure pump 1 runs idly, it first causes the pressure inside the diversion pipe 4 to decrease;

[0027] 2) When the pressure pump 1 runs idly, the water flow speed slows down and the rotation speed of the protruding block 14 decreases;

[0028] 3) The pressure sensor 2 and the rotation sensor 7 are independently arranged. When any one of the parameters changes greatly, a signal will be sent to the PLC 12;

[0029] 4) The PLC 12 sends a control signal to make the circuit breaker 18 cut off the power supply to the pressure pump 1, and at the same time the horn 10 sends an alarm to the outside.

[0030] In summary, when the user uses it, by setting the pressure pump 1 and the diversion pipe 4, the diversion pipe 4 provides a diversion channel for the water outlet. One end of the extension pipe 3 is installed with a pressure sensor 2. Inside the installation box 5, a transmission shaft 16, a first gear 15, and a second gear 13 are installed. The top of the second gear 13 is installed with a protruding block 14, and the top surface of the transparent cover 8 is installed with a rotation speed sensor 7. When the pressure pump 1 runs idly, it causes the pressure inside the diversion pipe 4 to decrease, and at the same time the rotation speed of the impeller 17 decreases. The detection signals of the corresponding rotation speed sensor 7 and the pressure sensor send signals to the PLC 12. Subsequently, the PLC 12 sends a control signal to make the circuit breaker 18 cut off the power supply to the pressure pump 1, and at the same time the horn 10 sends an alarm to the outside. The overall structure is simple and convenient for popularization and use. By setting the installation box 5 again, a transmission shaft 16, a first gear 15, and a second gear 13 are installed inside it, and the bottom end of the transmission shaft 16 is installed with an impeller 17. When the pressure pump 1 pumps water normally, the rotation speed of the impeller 17 is always at a certain speed. The first gear 15 and the second gear 13 are meshed with each other, and their sizes are different, so as to convert the rotation speed of the transmission shaft 16 and correspondingly reduce the rotation speed of the protruding block 14, which is convenient for the user to directly observe its rotation situation through the transparent cover 8.

[0031] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A water pump anti-idling device for secondary water supply equipment with an alarm function, characterized in that: The invention comprises a pressure pump (1) and a flow guide tube (4) installed at its output end, a control electric box (11) installed on one side of the bottom end of the flow guide tube (4), a PLC (12), a circuit breaker (18) and a speaker (10) installed inside the control electric box (11), an extension tube (3) installed in the middle of the flow guide tube (4), a pressure sensor (2) installed inside the extension tube (3), an intermediate tube (9) installed on the top of the flow guide tube (4), one side of which protrudes outwards, and an installation box (5) installed on the top surface of the intermediate tube (9), the top surface of which is installed A closing plate (6) is provided, a vertically placed transmission shaft (16) is installed on one side of the installation box (5), an impeller (17) is installed on the top of the transmission shaft (16), a first gear (15) is installed on the top of the transmission shaft (16), a second gear (13) meshing with the first gear (15) is installed on one side of the first gear (15), a protruding block (14) is installed on the top of the second gear (13), a transparent cover (8) is installed on the top surface of the closing plate (6), and a speed sensor (7) for measuring the speed of the protruding block (14) is installed on the top surface.

2. The water pump anti-idling device for secondary water supply equipment with an alarm function according to claim 1, characterized in that: One end of the extension tube (3) is fixedly connected to the middle part of the flow guide tube (4) by welding, and a sealing ring is provided between the other end of the extension tube (3) and the pressure sensor (2).

3. The water pump anti-idling device for secondary water supply equipment with an alarm function according to claim 2, characterized in that: One side of the bottom surface of the installation box (5) is a tubular structure and is fixedly connected to the top surface of the intermediate tube (9) via flange bolts.

4. The water pump anti-idling device for secondary water supply equipment with an alarm function according to claim 3, characterized in that: Two bearings are installed in the middle of the transmission shaft (16), and a sealing ring is installed at the top end of the transmission shaft (16).

5. The water pump anti-idling device for secondary water supply equipment with an alarm function according to claim 4, characterized in that: The circuit breaker (18), the speaker (10), the pressure sensor (2) and the rotation speed sensor (7) are all electrically connected to the PLC (12) via wires.

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