Water pump rotating speed monitoring device

Abstract

The utility model provides a water pump rotating speed monitoring device, which belongs to the technical field of water pump monitoring and comprises a rotating wheel shell, a rotating speed monitoring component and a transmission support. The rotating wheel shell is cylindrical, and a plurality of ventilation grooves distributed in the radial direction are formed in the outer wall of the rotating wheel shell. The transmission support is fixedly installed at the bottom of the rotating wheel shell, and a bearing installation base is arranged on the side wall of the transmission support. The rotating speed monitoring assembly is installed on the transmission support and can detect the rotating speed of the rotating wheel shell. The rotating speed monitoring assembly comprises a sensor body and a magnetic positioning ring, the sensor body is fixedly installed on the transmission support, the magnetic positioning ring is fixedly installed on the peripheral face of the rotating wheel shell, and the magnetic positioning ring and the sensor body are correspondingly arranged; the problem that an external sensor is not easy to install can be solved, and detection errors caused by external interference are reduced.

Description

Technical Field

[0001] This utility model belongs to the field of water pump monitoring technology, specifically, it relates to a water pump speed monitoring device. Background Technology

[0002] During pump operation, speed monitoring is one of the key technologies to ensure its efficient and safe operation. Traditional pump speed monitoring methods usually rely on external sensors or complex mechanical structures, which have some limitations in practical applications. For example, the installation location and method of external sensors may be limited by space, making the installation process complex and susceptible to environmental interference, affecting monitoring accuracy. In addition, traditional monitoring devices are prone to unstable or lost monitoring signals when operating at high speeds or under varying loads, making it difficult to meet the requirements of high-precision monitoring.

[0003] Traditional speed monitoring devices typically employ mechanical contact sensors or photoelectric sensors. Mechanical contact sensors suffer from mechanical wear, leading to decreased accuracy over time and requiring regular maintenance. While photoelectric sensors offer high accuracy, they are highly sensitive to environmental conditions and susceptible to contaminants such as dust and oil, resulting in unstable signals. Furthermore, these sensors require precise alignment during installation, increasing installation difficulty and maintenance costs.

[0004] During pump operation, traditional monitoring devices are prone to component displacement or slippage due to fluid dynamics and mechanical vibration, leading to inaccurate monitoring data. Particularly during startup and shutdown, inertial forces can cause relative displacement of the monitoring components, further affecting the reliability of the monitoring results. Furthermore, the heat and vibration generated during pump operation can also adversely affect the stability and lifespan of the monitoring device. Utility Model Content

[0005] In view of this, the present invention provides a water pump speed monitoring device, which can solve the problem of the difficulty in installing external sensors and reduce detection errors caused by external interference.

[0006] This utility model is implemented as follows:

[0007] This utility model provides a water pump speed monitoring device, comprising: a rotor housing, a speed monitoring component, and a transmission bracket; the rotor housing is cylindrical, and its outer wall has multiple radially distributed ventilation slots; the transmission bracket is fixedly installed at the bottom of the rotor housing, and a bearing mounting seat is provided on the side wall of the transmission bracket; the speed monitoring component is installed on the transmission bracket and can detect the rotation speed of the rotor housing; the speed monitoring component includes a sensor body and a magnetic positioning ring, the sensor body is fixedly installed on the transmission bracket, and the magnetic positioning ring is fixedly installed on the outer circumferential surface of the rotor housing, with the magnetic positioning ring corresponding to the sensor body.

[0008] The technical advantages of the water pump speed monitoring device provided by this utility model are as follows: By setting multiple radial ventilation slots on the outer wall of the impeller housing and installing a speed monitoring component on the transmission bracket, accurate monitoring of the water pump speed is achieved. The precise cooperation between the sensor body and the magnetic positioning ring in the speed monitoring component can accurately capture the rotational speed of the impeller housing in real time, improving the monitoring accuracy and reliability of the water pump's operating status and providing effective technical support for the safe operation of the water pump.

[0009] Based on the above technical solution, the water pump speed monitoring device of this utility model can be further improved as follows:

[0010] The transmission bracket includes a base plate and a side plate. The base plate is rectangular flat, and the side plate is vertically fixed to one side of the base plate. The side plate is 5-10 mm thick, and a bearing mounting groove is formed on its surface. The bearing mounting groove has a U-shaped cross-section, and a bearing seat is embedded in the groove.

[0011] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the transmission support adopts an integrated structure of base plate and side plate, and the U-shaped bearing mounting groove opened on the side plate not only enhances the overall strength of the support, but also optimizes the installation accuracy of the bearing. By controlling the thickness of the side plate and the structure of the bearing mounting groove, precise positioning and smooth transmission of the pump's rotating parts are achieved, significantly improving the pump's mechanical performance and operational stability.

[0012] Furthermore, the magnetic positioning ring has a circular structure with an outer diameter of 20-50 mm and an inner diameter that matches the shaft diameter of the wheel housing; the magnetic positioning ring is made of neodymium iron boron magnetic material.

[0013] The beneficial effects of adopting the above-mentioned improved scheme are as follows: The magnetic positioning ring made of neodymium iron boron magnetic material has the characteristics of high magnetic performance and precise positioning. The design of the circular structure and the inner diameter that precisely matches the shaft diameter of the runner housing ensure the stable installation of the magnetic positioning ring on the runner housing. The use of positioning pins further enhances the fixing reliability of the magnetic positioning ring, providing an accurate magnetic reference for speed monitoring.

[0014] Furthermore, the magnetic positioning ring is composed of two semi-circular ring structures that are rotatably connected to form a circular ring structure through a hinge mechanism, and is detachably connected to the outer wall of the rotating wheel housing.

[0015] The beneficial effect of adopting the above-mentioned improvement scheme is that it facilitates the replacement of the positioning ring.

[0016] Furthermore, the inner wall of the magnetic positioning ring is provided with a triangular protrusion, and the corresponding position of the outer wall of the rotating wheel housing is provided with a corresponding triangular recess. The cross-section of the triangular protrusion is a right triangle, with the right angle away from the front side of the rotating wheel housing in the direction of rotation. The cross-section of the triangular recess is a right triangle, with the right angle located at the rear side of the rotating wheel housing in the direction of rotation.

[0017] The beneficial effects of adopting the above-mentioned improvement scheme are: when the wheel housing rotates, it can drive the positioning ring to rotate, and when it stops rotating, it can prevent the positioning ring from shifting away from the wheel housing.

[0018] Furthermore, the sensor body is a Hall sensor, and its mounting base is L-shaped. One end of the L-shaped mounting base is fixedly connected to the side plate of the transmission bracket, and the other end is fixedly connected to the Hall sensor. The distance between the Hall sensor and the magnetic positioning ring is controlled within the range of 1-3 mm.

[0019] The beneficial effects of adopting the above-mentioned improved scheme are as follows: The L-shaped mounting base designed in this invention enables the Hall sensor to be accurately positioned and maintains the optimal detection distance with the magnetic positioning ring. By strictly controlling the 1-3 mm gap between the Hall sensor and the magnetic positioning ring, the sensitivity and accuracy of speed detection are significantly improved, realizing high-precision real-time monitoring of the water pump speed.

[0020] Furthermore, the ventilation slots of the rotor housing are rectangular openings, with each ventilation slot having a width of 5-10 mm and a spacing of 15-25 mm.

[0021] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the design of the rectangular ventilation slots optimizes the ventilation performance of the impeller housing, and the reasonable slot width and spacing can significantly improve the heat dissipation effect of the water pump. By controlling the geometric parameters of the ventilation slots, the heat accumulation during the operation of the water pump is effectively reduced, thereby improving the heat dissipation efficiency and overall performance of the equipment.

[0022] Furthermore, the outer wall of the wheel housing has radial protrusions with a height of 2-5 mm.

[0023] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: The radial protrusions on the outer wall of the impeller housing not only enhance the structural strength of the housing but also improve the hydrodynamic characteristics. The refined design of the protrusions optimizes the fluid flow path, reduces eddies and energy losses, and improves the overall transmission efficiency of the pump.

[0024] Furthermore, the inner wall of the rotor housing is provided with a spiral guide groove.

[0025] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the spiral guide grooves on the inner wall of the impeller housing can significantly improve the guiding performance of the fluid, reduce the resistance and energy loss during the fluid movement process. The spiral design promotes uniform fluid flow and improves the pump's transmission efficiency and operational stability.

[0026] Furthermore, the number of radial protrusions is 3-6, and the protrusions are evenly distributed on the outer wall of the wheel housing.

[0027] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the uniformly distributed radial protrusions can ensure the structural symmetry of the impeller housing, reduce unbalanced vibration, and improve the operational stability of the water pump. By precisely controlling the number and distribution of the protrusions, the mechanical properties and power transmission characteristics of the impeller housing are further optimized.

[0028] Compared with existing technologies, the beneficial effects of the water pump speed monitoring device provided by this utility model are as follows: First, by directly mounting the magnetic positioning ring on the impeller housing and combining it with the sensor body fixed on the transmission bracket, the device achieves integrated and simplified speed monitoring. This design reduces reliance on external sensors, lowers the complexity of installation and maintenance, and simultaneously improves the reliability and anti-interference capability of monitoring.

[0029] Secondly, the precise fit between the magnetic positioning ring and the sensor body ensures real-time capture of rotational speed signals even when the wheel housing is rotating at high speed. The magnetic positioning ring is made of high-magnetic-performance material, and its circular structure further enhances signal stability and anti-interference capabilities, thereby improving monitoring accuracy and reliability.

[0030] Furthermore, the device achieves synchronous transmission during rotation and mechanical limiting when stopped by engaging the triangular protrusion on the inner side of the magnetic positioning ring with the triangular recess on the wheel housing. This structure effectively prevents relative displacement between the positioning ring and the wheel housing, ensuring the continuity and accuracy of speed monitoring and avoiding monitoring errors caused by inertia or external vibration.

[0031] The device also optimizes heat dissipation and hydrodynamic performance by incorporating radial ventilation slots and spiral guide channels on the impeller housing. The well-designed ventilation slots significantly improve the pump's heat dissipation, reduce heat accumulation during operation, and enhance the equipment's heat dissipation efficiency and overall performance. The spiral guide channels reduce resistance and energy loss during fluid movement, promote uniform fluid flow, and improve the pump's transmission efficiency and operational stability.

[0032] Finally, the radial protrusions on the outer wall of the impeller housing enhance structural strength, reduce unbalanced vibration, and further improve the stability and durability of the device. The evenly distributed radial protrusions ensure the structural symmetry of the impeller housing, optimize mechanical properties and power transmission characteristics, and improve the pump's operational stability and service life.

[0033] In summary, this device, through integrated design, magnetic sensing technology, mechanical limiting structure, and optimized heat dissipation and strength design, significantly improves the accuracy, reliability, and stability of water pump speed monitoring, while simplifying the installation and maintenance process and enhancing the overall performance and service life of the equipment. Attached Figure Description

[0034] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 This is a water pump speed monitoring device;

[0036] The attached diagram lists the components represented by each number as follows:

[0037] 1. Rotor housing; 2. Transmission bracket; 3. Speed ​​monitoring device; 31. Sensor; 32. Magnetic positioning ring. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0039] like Figure 1 The diagram shows a first embodiment of a water pump speed monitoring device provided by this utility model. In this embodiment, it includes: a rotor housing 1, a speed monitoring component 3, and a transmission bracket 2. The rotor housing is cylindrical, and its outer wall has multiple radially distributed ventilation slots. The transmission bracket is fixedly installed at the bottom of the rotor housing, and a bearing mounting seat is provided on the side wall of the transmission bracket. The speed monitoring component is installed on the transmission bracket and can detect the rotation speed of the rotor housing. The speed monitoring component includes a sensor body 31 and a magnetic positioning ring 32. The sensor body is fixedly installed on the transmission bracket, and the magnetic positioning ring is fixedly installed on the outer circumferential surface of the rotor housing. The magnetic positioning ring is correspondingly arranged with the sensor body.

[0040] In the above technical solution, the transmission bracket includes a base plate and a side plate. The base plate is rectangular flat, and the side plate is vertically fixed to one side of the base plate. The side plate is 5-10 mm thick, and a bearing mounting groove is formed on its surface. The bearing mounting groove has a U-shaped cross section, and a bearing seat is embedded in the groove.

[0041] Furthermore, in the above technical solution, the magnetic positioning ring is a circular ring structure with an outer diameter of 20-50 mm and an inner diameter that matches the shaft diameter of the wheel housing; the magnetic positioning ring is made of neodymium iron boron magnetic material.

[0042] Furthermore, in the above technical solution, the sensor body is a Hall sensor, and its mounting base is L-shaped. One end of the L-shaped mounting base is fixedly connected to the side plate of the transmission bracket, and the other end is fixedly connected to the Hall sensor; the distance between the Hall sensor and the magnetic positioning ring is controlled within the range of 1-3 mm.

[0043] Furthermore, in the above technical solution, the ventilation slots of the rotor housing are rectangular slots, each with a width of 5-10 mm and a spacing of 15-25 mm.

[0044] Furthermore, in the above technical solution, the outer wall of the rotor housing has radial protrusions, the height of which is 2-5 mm.

[0045] Furthermore, in the above technical solution, a spiral guide groove is formed on the inner wall of the rotor housing.

[0046] Furthermore, in the above technical solution, the number of radial protrusions is 3-6, and the protrusions are evenly distributed on the outer wall of the wheel housing.

[0047] like Figure 1 The image shows a second embodiment of a water pump speed monitoring device provided by this utility model. In this embodiment, it includes: a rotor housing, a speed monitoring component, and a transmission bracket; the rotor housing is cylindrical, and its outer wall has multiple radially distributed ventilation slots; the transmission bracket is fixedly installed at the bottom of the rotor housing, and a bearing mounting seat is provided on the side wall of the transmission bracket; the speed monitoring component is installed on the transmission bracket and can detect the rotation speed of the rotor housing; the speed monitoring component includes a sensor body and a magnetic positioning ring, the sensor body is fixedly installed on the transmission bracket, and the magnetic positioning ring is fixedly installed on the outer circumferential surface of the rotor housing, with the magnetic positioning ring corresponding to the sensor body.

[0048] In the above technical solution, the transmission bracket includes a base plate and a side plate. The base plate is rectangular flat, and the side plate is vertically fixed to one side of the base plate. The side plate is 5-10 mm thick, and a bearing mounting groove is formed on its surface. The bearing mounting groove has a U-shaped cross section, and a bearing seat is embedded in the groove.

[0049] Furthermore, in the above technical solution, the magnetic positioning ring is composed of two semi-circular ring structures that are rotatably connected to form a circular ring structure through a hinge mechanism, and is detachably connected to the outer wall of the rotating wheel housing.

[0050] Furthermore, in the above technical solution, the inner wall of the magnetic positioning ring is provided with a triangular protrusion, and the corresponding position of the outer wall of the rotating wheel housing is provided with a corresponding triangular recess. The cross section of the triangular protrusion is a right triangle, with the right angle away from the front side of the rotating wheel housing in the direction of rotation. The cross section of the triangular recess is a right triangle, with the right angle located at the rear side of the rotating wheel housing in the direction of rotation.

[0051] Furthermore, in the above technical solution, the sensor body is a Hall sensor, and its mounting base is L-shaped. One end of the L-shaped mounting base is fixedly connected to the side plate of the transmission bracket, and the other end is fixedly connected to the Hall sensor; the distance between the Hall sensor and the magnetic positioning ring is controlled within the range of 1-3 mm.

[0052] Furthermore, in the above technical solution, the ventilation slots of the rotor housing are rectangular slots, each with a width of 5-10 mm and a spacing of 15-25 mm.

[0053] Furthermore, in the above technical solution, the outer wall of the rotor housing has radial protrusions, the height of which is 2-5 mm.

[0054] Furthermore, in the above technical solution, a spiral guide groove is formed on the inner wall of the rotor housing.

[0055] Furthermore, in the above technical solution, the number of radial protrusions is 3-6, and the protrusions are evenly distributed on the outer wall of the wheel housing.

[0056] The following is a specific application scenario of the water pump speed monitoring device provided by this utility model: In industrial production, a large water pump is used to transport high-temperature liquids, and its speed needs to be monitored in real time to ensure operational stability. When using this speed monitoring device, firstly, the impeller housing is installed on the pump's rotating shaft, ensuring it rotates synchronously with the shaft, and the ventilation slots and guide channels are checked for unobstructed flow to optimize heat dissipation. The magnetic positioning ring is installed on the outer circumference of the impeller housing via a hinge mechanism, ensuring precise fit between the triangular protrusion and recess. The transmission bracket is fixed to the pump base, and the bearing seat on the side plate supports the rotation of the impeller housing. The Hall sensor is installed on the L-shaped mounting base of the transmission bracket, maintaining a 2 mm distance from the magnetic positioning ring. The signal line is connected to the signal processing module of the control system, outputting speed data in real time. After the water pump is started, the device can stably monitor the speed and maintain good heat dissipation and signal stability in high-temperature environments. During regular maintenance, the magnetic positioning ring can be quickly replaced via the hinge mechanism to ensure monitoring accuracy.

[0057] The following is another specific application scenario of the water pump speed monitoring device provided by this utility model: In an agricultural irrigation system, a water pump is used to extract groundwater, and its speed needs to be monitored to optimize irrigation efficiency. When installing this device, the impeller housing is fixed to the pump's rotating shaft, and the ventilation slot design effectively reduces heat accumulation during operation. The magnetic positioning ring is mounted on the outer circumference of the impeller housing via a hinge mechanism, ensuring synchronous transmission during rotation. The transmission bracket is fixed to the base of the irrigation pump, and the bearing seat on the side plate supports the smooth rotation of the impeller housing. The Hall sensor is mounted on the L-shaped mounting base of the transmission bracket, maintaining a distance of 1.5 mm from the magnetic positioning ring, and the signal line is connected to the control panel of the irrigation system. After the water pump is started, the device can monitor the speed in real time, helping farmers adjust the pump's operating status to save energy. After the irrigation season ends, the magnetic positioning ring can be quickly disassembled via the hinge mechanism for maintenance, ensuring normal use in the next season.

[0058] Specifically, the principle of this utility model is as follows: The water pump speed monitoring device is based on magnetic sensing technology and a mechanical transmission structure. Real-time speed monitoring is achieved through the cooperation of a magnetic positioning ring and the sensor body. The magnetic positioning ring is fixed to the outer circumference of the impeller housing and rotates with it. The sensor body (such as a Hall sensor) is fixed to the transmission bracket, maintaining a distance of 1-3 mm from the magnetic positioning ring. When the impeller housing rotates, the change in the magnetic field of the magnetic positioning ring is captured by the sensor and converted into an electrical signal. The signal processing circuit calculates the number of magnetic field changes per unit time, thereby determining the speed. The triangular protrusion on the inner side of the magnetic positioning ring cooperates with the triangular recess on the impeller housing to ensure synchronous transmission during rotation and prevent displacement through mechanical limiting when stopped, ensuring continuous and accurate monitoring.

[0059] When installing the impeller housing, fix it to the rotating shaft of the water pump, ensuring it rotates synchronously with the shaft, and check that the ventilation slots and guide channels are unobstructed. Next, install the magnetic positioning rings. Open the two semi-circular rings using the hinge mechanism and fit them onto the outer circumference of the impeller housing, ensuring the triangular protrusions and recesses precisely align before closing the hinge mechanism to secure it. Then, install the transmission bracket, fixing the base plate to the water pump base for stability, and installing bearing seats on the side plates to support the rotation of the impeller housing. Next, install the sensor body, fixing it to the L-shaped mounting base of the transmission bracket, adjusting its position to maintain a 1-3 mm distance from the magnetic positioning ring, ensuring accurate alignment. When connecting the signal processing circuit, connect the sensor body's output signal line to the signal processing circuit or control system, ensuring a secure signal transmission line connection. Start the water pump and test, observing the rotation of the impeller housing and magnetic positioning rings, checking the stability of the sensor output signal, and reading the rotation speed data through the display device or control system. Adjust the sensor position or signal processing parameters as necessary. Finally, perform maintenance and replacement. Regularly check the working condition of the magnetic positioning ring and the sensor body to ensure that there is no wear or looseness. When replacing, open the hinge mechanism, remove the old ring, and install the new ring.

Claims

1. A water pump speed monitoring device, characterized in that, include: The rotary wheel housing, the rotational speed monitoring component, and the transmission support are included. The rotary wheel housing is cylindrical, with multiple radially distributed ventilation slots on its outer wall. The transmission support is fixedly installed at the bottom of the rotary wheel housing, and a bearing mounting seat is provided on the side wall of the transmission support. The rotational speed monitoring component is installed on the transmission support and can detect the rotational speed of the rotary wheel housing. The rotational speed monitoring component includes a sensor body and a magnetic positioning ring. The sensor body is fixedly installed on the transmission support, and the magnetic positioning ring is fixedly installed on the outer circumferential surface of the rotary wheel housing, with the magnetic positioning ring corresponding to the sensor body.

2. The water pump speed monitoring device according to claim 1, characterized in that, The transmission support includes a base plate and a side plate. The base plate is rectangular flat, and the side plate is vertically fixed to one side of the base plate. The side plate is 5-10 mm thick, and a bearing mounting groove is formed on its surface. The bearing mounting groove has a U-shaped cross-section, and a bearing seat is embedded in the groove.

3. The water pump speed monitoring device according to claim 2, characterized in that, The magnetic positioning ring is a circular structure with an outer diameter of 20-50 mm and an inner diameter that matches the shaft diameter of the wheel housing; the magnetic positioning ring is made of neodymium iron boron magnetic material.

4. The water pump speed monitoring device according to claim 3, characterized in that, The magnetic positioning ring consists of two semi-circular ring structures that are rotatably connected to form a circular ring structure via a hinge mechanism, and is detachably connected to the outer wall of the rotating wheel housing.

5. The water pump speed monitoring device according to claim 4, characterized in that, The inner wall of the magnetic positioning ring is provided with a triangular protrusion, and the corresponding position of the outer wall of the rotating wheel housing is provided with a corresponding triangular recess. The cross-section of the triangular protrusion is a right triangle, with the right angle away from the front side of the rotating wheel housing in the direction of rotation. The cross-section of the triangular recess is a right triangle, with the right angle located at the rear side of the rotating wheel housing in the direction of rotation.

6. The water pump speed monitoring device according to claim 5, characterized in that, The sensor body is a Hall sensor, and its mounting base is L-shaped. One end of the L-shaped mounting base is fixedly connected to the side plate of the transmission bracket, and the other end is fixedly connected to the Hall sensor. The distance between the Hall sensor and the magnetic positioning ring is controlled within the range of 1-3 mm.

7. A water pump speed monitoring device according to claim 6, characterized in that, The ventilation slots of the rotor housing are rectangular, with each slot being 5-10 mm wide and the spacing between the slots being 15-25 mm.

8. A water pump speed monitoring device according to claim 7, characterized in that, The outer wall of the wheel housing has radial protrusions, the height of which is 2-5 mm.

9. A water pump speed monitoring device according to claim 8, characterized in that, The inner wall of the rotor housing is provided with a spiral guide groove.

10. A water pump speed monitoring device according to claim 9, characterized in that, The number of radial protrusions is 3-6, and the protrusions are evenly distributed on the outer wall of the wheel housing.

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