High-precision water pump pressure controller

Abstract

The invention discloses a high-precision water pump pressure controller which comprises a pump box, a centrifugal impeller and an adjusting ring set. A bearing frame is arranged on one side of the pump box, a vortex tube and a lining plate are arranged on the surface of the pump box, a rotating speed sensor and a flow speed sensor are arranged on the inner side of the bearing frame and the inner side of the vortex tube respectively, a pressure sensor is arranged on the lining plate, and the output end of the sensor is electrically connected to a data processing module. The centrifugal impeller comprises a wheel seat, a sliding ring, centrifugal blades and a synchronous gear ring, and the centrifugal blades are meshed with a worm gear rack of the synchronous gear ring through transmission tooth grooves. The adjusting ring set comprises a sliding rod, a joint ring and a hand rotating ring and is used for controlling the synchronous gear ring to rotate so as to drive the centrifugal blades to deflect to adjust the exposed area of the centrifugal blades, and therefore dynamic adjustment of pressure output is achieved. The system can realize real-time monitoring and fusion analysis of parameters such as rotating speed, flow velocity and pressure, has the advantages of fast response, high adjustment precision, strong system stability and the like, and is suitable for a precise fluid conveying system.

Description

Technical Field

[0001] The present invention relates to the technical field of water pumps, and particularly to a high-precision water pump pressure controller. Background Art

[0002] In modern pump equipment technology, especially in application scenarios with high requirements for pressure and flow control (such as medical infusion, precision fluid transportation, industrial process control, etc.), the output stability and adjustment accuracy of water pumps have a crucial impact on system performance. In the prior art, common control methods mostly use constant-speed motors + closed-loop frequency converters or external valve throttling in combination with digital quantity control to achieve pressure regulation. Although these methods can meet basic control requirements, they have the following limitations: Current water pump systems usually only integrate a single-parameter sensor, such as a pressure sensor or a flow sensor, lacking the ability to perceive the cooperative state of multiple parameters and making it difficult to comprehensively grasp the dynamic changes during the operation of the pump body. Although some advanced systems introduce multiple sensors, their layout is scattered, the signal acquisition path is long, and the synchronization is poor, making it difficult to form a stable and effective data fusion mechanism.

[0003] In addition, in traditional centrifugal pumps, a fixed impeller structure or a replaceable vane assembly is often used for pressure matching. Once this structure is set, it cannot be dynamically adjusted, and the pressure needs to be indirectly adjusted by changing means such as the motor speed and the outlet opening. This method has a limited adjustment range and a response lag, and cannot adapt to rapidly changing flow and load requirements.

[0004] Although some high-end systems with adjustable vanes introduce mechanical or electric adjustment mechanisms, their structures are complex, the costs are high, and the maintainability is poor, making it difficult to popularize them to small and medium-sized or civilian pump products.

[0005] In view of this, in order to study and improve the existing problems, a high-precision water pump pressure controller is provided to solve the current problems, aiming to achieve the purpose of solving problems and improving practical value through this technology. Summary of the Invention

[0006] The present invention aims to solve one of the technical problems existing in the prior art or related technologies.

[0007] For this reason, the technical solution adopted by the present invention is as follows: A high-precision water pump pressure controller, comprising: a pump box, a centrifugal impeller, and an adjustment ring group. One side of the pump box is fixedly connected with a bearing bracket, a volute tube is arranged on the surface of the pump box, a lining plate is arranged on the inner wall surface of the pump box, a rotational speed sensor and a flow velocity sensor are respectively arranged inside the bearing bracket and the volute tube, a pressure sensor connected to the inner wall of the pump box is arranged on the surface of the lining plate, a dynamic seal ring facing the surface of the bearing bracket is arranged on one side of the pump box, and the adjustment ring group slidably penetrates through the surface of the dynamic seal ring; The centrifugal impeller is rotatably installed inside the pump housing, and one end of the centrifugal impeller is connected to a rotating shaft that penetrates the bearing housing. The centrifugal impeller includes a wheel seat, a slip ring, centrifugal blades, and a synchronous gear ring rotatably installed inside the wheel seat. A number of storage grooves corresponding to the centrifugal blades one by one are provided inside the wheel seat. The centrifugal blades are rotatably installed on the surface of the wheel seat, and a transmission tooth groove is provided on one side of the centrifugal blades. A worm gear rack meshing with the surface of the transmission tooth groove is provided on the surface of the synchronous gear ring. A slip ring is fixedly installed on the surface of the wheel seat; the adjustment ring group is used to drive the synchronous gear ring to rotate when engaged with the surface of the synchronous gear ring; the output ends of the rotational speed sensor, the flow rate sensor, and the pressure sensor are electrically connected to a data processing module.

[0008] This structure realizes the dynamic adjustment and control of pressure, and through the sensors, it realizes real-time monitoring, improving the intelligent level of the water pump control system.

[0009] In a possible implementation, the lining plate is a component made of polytetrafluoroethylene material, and the lining plate is in the shape of an arc plate and is assembled and spliced by multiple arc plates. The pressure sensors are arranged corresponding to each arc plate one by one. This structure can effectively adapt to the shape of the curved inner wall, enhance the corrosion resistance and shock absorption performance, and improve the measurement accuracy and structural stability.

[0010] In a possible implementation, the rotational speed sensor includes a high-precision photoelectric encoder for real-time monitoring of the rotational speed of the centrifugal impeller; this rotational speed sensor is connected to the control system, transmits the rotational speed data in real time, and adjusts the working state of the water pump motor according to the real-time rotational speed value to achieve precise pressure control; the flow rate sensor uses ultrasonic sensing technology to real-time monitor the change in the flow rate of the fluid in the water pump; through the data obtained by this sensor, the flow rate can be adjusted in real time, so as to ensure that the water pump operates in an efficient working state and optimize the energy efficiency of the water pump; the pressure sensor is a MEMS pressure sensor, which can provide accurate feedback signals in a high-pressure environment and is equipped with a temperature compensation function to ensure high precision under different environmental conditions. This structure improves the accuracy of operation data perception and enhances the stability of pressure control and the system response ability.

[0011] In a possible implementation, the data processing module includes an embedded processor, which collects signals from the rotational speed sensor, the flow rate sensor, and the pressure sensor in real time, and uses digital signal processing algorithms for data filtering, error correction, and data fusion. This structure improves the computing power of the control logic and the reliability of data processing, and helps to achieve high-precision real-time control.

[0012] In a possible implementation, the centrifugal blades are rotatably installed on the surface of the wheel seat and can be received inside the storage groove. The worm gear rack is in the shape of a planar spiral strip and meshes with the surface of the transmission tooth groove. This structure enables the centrifugal blades to accurately control the deflection angle, enhancing the adjustment efficiency and response accuracy.

[0013] In a possible implementation, the adjusting ring group includes a sliding rod, an engaging ring, and a hand-rotating ring. The sliding rod slidably penetrates through the surface of the dynamic sealing ring. The engaging ring and the hand-rotating ring are fixed at both ends of the sliding rod. On one side of the synchronous gear ring, there are inserted convex teeth that mesh with the surface of the engaging ring.

[0014] Specifically, when manually pushing the hand-rotating ring to move, the engaging ring is pushed to engage with the surface of the synchronous gear ring, and the synchronous gear ring is rotated by rotating the hand-rotating ring. Furthermore, the rotation of the synchronous gear ring is controlled by the rotation of the adjusting ring group, driving the centrifugal blade to deflect, so as to adjust the exposed area of the centrifugal blade on the surface of the wheel seat. The smaller the exposed area of the centrifugal blade, the lower the conveying efficiency and the lower the infusion pressure. Conversely, the conveying pressure is greater. This structure has a manual adjustment function, which is convenient for system debugging, maintenance, and emergency operation.

[0015] In a possible implementation, the slip ring has an annular structure and is slidably abutted against the inner side of the pump housing. The outer surface of the slip ring is a smooth curved surface. This structure reduces the running friction and improves the system stability and sealing reliability.

[0016] In a possible implementation, the lining plate is connected to the inner wall of the pump housing through an elastic material, which is used for shock absorption and reducing the impact on the equipment caused by the vibration of the water pump under high-frequency operation. This structure enhances the durability and stability of the whole machine operation and reduces the running noise.

[0017] Based on the above technical solutions, a high-precision water pump pressure controller of the present invention drives the synchronous gear ring to rotate through the adjusting ring group, thereby adjusting the deflection angle of the centrifugal blade, controlling the size of its exposed area, and realizing the dynamic adjustment of the output pressure of the water pump. The system integrates a rotational speed sensor, a flow rate sensor, and a pressure sensor. Through the real-time processing and feedback of the data processing module, a closed-loop system for pressure control is constructed to achieve the pressure regulation and control objectives of high precision and high responsiveness. The said structure is applicable to the fluid control field that requires precise control of the conveying pressure and flow rate, and has the technical advantages of high adjustment precision, compact structure, fast response, and strong system stability.

[0018] The beneficial effects obtained by the present invention are as follows: 1. In the present invention, a rotational speed sensor, a flow rate sensor, and a pressure sensor are integrated in the pump housing, constructing a multi-element monitoring system covering the core parameters of the pump body operation; each sensor is respectively used to collect the rotational speed of the centrifugal impeller, the flow rate inside the pump body, and the output pressure in real time, and transmit the data to the embedded data processing module through an electrical connection method, realizing the real-time perception, data fusion, and analysis and judgment of the operation state of the water pump.

[0019] 2. In the present invention, the worm gear and rack linkage drives the centrifugal blade to deflect on the surface of the wheel seat. The deflection angle of the centrifugal blade directly determines its exposed area at the pump impeller outlet, thereby affecting the effective output area of the liquid and the flow rate per unit time. When the exposed area of the centrifugal blade decreases, the output flow rate and pressure decrease accordingly; conversely, the flow rate and pressure increase. Through this structure, the linkage adjustment of the water pump pressure output and the blade structure is realized, with excellent dynamic adjustment response characteristics.

[0020] 3. In the present invention, the lining plate is made of polytetrafluoroethylene material, which has flexibility and good fitting performance. After being installed on the inner wall of the pump box, it can maintain a stable fitting state with the pump body structure. The pressure sensor is arranged on the surface of the lining plate, which can accurately sense the instantaneous pressure change of the fluid on the inner wall of the pump cavity, avoiding the pressure interference signal caused by local deformation or gaps. Brief Description of the Drawings

[0021] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention; Figure 2 It is a schematic diagram of the cross-sectional structure of the pump box of an embodiment of the present invention; Figure 3 It is a schematic diagram of the internal structure of the pump box of an embodiment of the present invention; Figure 4 It is a schematic diagram of the structure of the centrifugal impeller and the adjusting ring group of an embodiment of the present invention; Figure 5 It is a schematic diagram of the partial cross-sectional structure of the centrifugal impeller of an embodiment of the present invention; Figure 6 It is a schematic diagram of the structure of the centrifugal blade, the synchronous gear ring and the adjusting ring group of an embodiment of the present invention; Figure 7 For an embodiment of the present invention Figure 6 Schematic diagram of the structure at position A; Figure 8 It is a schematic diagram of the surface structure of the synchronous gear ring and the adjusting ring group of an embodiment of the present invention.

[0022] Reference Signs: 100, pump box; 110, bearing bracket; 120, vortex tube; 130, lining plate; 111, rotational speed sensor; 121, flow velocity sensor; 131, pressure sensor; 200, centrifugal impeller; 210, wheel seat; 220, slip ring; 230, centrifugal blade; 240, synchronous gear ring; 211, receiving groove; 231, transmission tooth groove; 241, worm gear and rack; 242, inserted convex tooth; 300, adjusting ring group; 310, slide bar; 320, engagement ring; 330, hand-turning ring. Detailed Embodiments

[0023] To make the objectives, technical solutions, and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be noted that, without conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0024] It should be understood that these descriptions are merely exemplary and are not intended to limit the scope of the present invention.

[0025] The following describes a high-precision water pump pressure controller provided by some embodiments of the present invention in conjunction with the accompanying drawings.

[0026] Combined Figures 1-7 As shown, a high-precision water pump pressure controller provided by the present invention includes a pump housing 100, a centrifugal impeller 200, and an adjustment ring group 300. Among them: One side of the pump housing 100 is fixedly connected to a bearing bracket 110. A volute pipe 120 is provided on the outer surface of the pump housing 100, and a lining plate 130 is provided on the inner wall surface of the pump housing 100. A rotational speed sensor 111 is provided inside the bearing bracket 110, a flow velocity sensor 121 is provided inside the volute pipe 120, and a pressure sensor 131 connected to the inner wall of the pump housing 100 is provided on the surface of the lining plate 130. A dynamic seal ring is also provided on one side of the pump housing 100, and the adjustment ring group 300 slidably penetrates the surface of the dynamic seal ring for realizing the linkage adjustment of the internal structure.

[0027] The centrifugal impeller 200 is rotatably installed inside the pump housing 100 and is connected to an external drive source through a rotating shaft passing through the bearing bracket 110. The centrifugal impeller 200 includes a wheel seat 210, a slip ring 220, centrifugal blades 230, and a synchronous gear ring 240. A plurality of receiving grooves 211 are formed inside the wheel seat 210, and the centrifugal blades 230 can be received in the receiving grooves 211. The centrifugal blades 230 are rotatably installed on the surface of the wheel seat 210, and a transmission tooth groove 231 is provided on one side thereof. The synchronous gear ring 240 is rotatably installed inside the wheel seat 210, and worm gears and racks 241 are provided on the surface. The worm gears and racks 241 are meshed with the transmission tooth groove 231 for driving the centrifugal blades 230 to deflect and adjust.

[0028] The slip ring 220 is fixedly installed outside the wheel seat 210 and slidably abuts against the inner wall of the pump housing 100. It has an annular structure and a smooth curved surface on the outer surface, reducing friction and improving the sealing fit.

[0029] The adjustment ring group 300 includes a slide rod 310, a joining ring 320, and a hand-turning ring 330. The slide rod 310 slidably penetrates the surface of the dynamic seal ring, and the joining ring 320 and the hand-turning ring 330 are respectively fixed at both ends of the slide rod 310. An insertion convex tooth 242 is provided on one side of the synchronous gear ring 240 for meshing with the surface of the joining ring 320.

[0030] During actual use, in the initial state, the user can manually control the movement of the adjusting ring group 300. The specific operation is as follows: Push the hand-rotating ring 330 to move axially, drive the sliding rod 310 to push the engaging ring 320 to engage with the inserted convex teeth 242 on the synchronous gear ring 240, and then rotate the hand-rotating ring 330 to drive the synchronous gear ring 240 to rotate. The synchronous gear ring 240 drives the engaged transmission tooth groove 231 to rotate through the worm gear rack 241 on its surface, realizing the deflection adjustment of the centrifugal impeller 230. The smaller the exposed area of the centrifugal impeller 230 on the surface of the wheel seat 210, the lower the pumping efficiency of the water pump and the smaller the infusion pressure; the larger the exposed area, the higher the conveying efficiency and the greater the pressure, completing the rough adjustment of the pressure.

[0031] A plurality of sensor components are installed inside the pump housing 100, including a rotational speed sensor 111, a flow rate sensor 121, and a pressure sensor 131. The rotational speed sensor 111 adopts a high-precision optoelectronic encoder structure and is installed inside the bearing bracket 110 for real-time monitoring of the rotational speed of the centrifugal impeller 200; the flow rate sensor 121 adopts the ultrasonic sensing principle and is installed inside the volute pipe 120 for monitoring the flow rate change inside the water pump; the pressure sensor 131 is a MEMS pressure sensor with a temperature compensation function, fixedly installed on the surface of the lining plate 130, and determines the internal water pressure intensity of the pump housing 100 by detecting the pressure on the surface of the lining plate 130, suitable for providing stable and accurate feedback signals in high-pressure environments.

[0032] The signal output ends of the above-mentioned sensor components are electrically connected to the data processing module. The data processing module includes an embedded processor with digital signal processing algorithm functions, capable of performing real-time filtering, error correction, and data fusion on the signals collected by the sensors, and judging whether the current water pump system is in the target operating state. If the detection result shows that the pressure deviates from the preset target value, the data processing module will output an alarm signal to prompt maintenance or further adjustment.

[0033] By controlling the rotation of the synchronous gear ring 240 through the adjusting ring group 300, the deflection angle of the centrifugal impeller 230 is further adjusted, so that the exposed area on the wheel seat 210 changes accordingly, thereby realizing the dynamic adjustment of the output flow rate and pressure. The system forms a complete sensing - calculation - response closed-loop control circuit.

[0034] To improve the operating stability and structural reliability, the slip ring 220 maintains a sliding contact with the inner wall of the pump housing 100, and its outer surface is designed as a smooth curved surface to reduce the rotational friction. The lining plate 130 is made of polytetrafluoroethylene material, having excellent corrosion resistance and antifriction performance. The lining plate 130 is composed of a plurality of arc-shaped plates spliced together, and a group of pressure sensors 131 are installed on each lining plate 130. The lining plate 130 is connected to the inner wall of the pump housing 100 through an elastic material, having excellent buffering and shock-absorbing capabilities, effectively reducing the vibration and impact generated by the high-frequency operation of the water pump, and improving the equipment stability and service life.

[0035] Through reasonable structural configuration and sensing feedback mechanism, the embodiment of the present invention realizes precise control of the water pump pressure, and has the advantages of compact structure, stable operation, timely response and flexible adjustment. It is particularly suitable for infusion or high-precision fluid systems with high requirements for flow and pressure control.

[0036] Working principle and usage process of the present invention: In the initial stage, the adjustment ring group 300 can be manually controlled to act. Specifically, when manually pushing the hand-rotating ring 330 to move, the engaging ring 320 is pushed to be in contact with the surface of the synchronous gear ring 240, and the synchronous gear ring 240 is rotated by rotating the hand-rotating ring 330. Then, the rotation of the synchronous gear ring 240 is controlled by the rotation of the adjustment ring group 300, driving the centrifugal blade 230 to deflect, so as to adjust the exposed area of the centrifugal blade 230 on the surface of the wheel seat 210. The smaller the exposed area of the centrifugal blade 230, the lower the conveying efficiency and the lower the infusion pressure. On the contrary, the conveying pressure is greater.

[0037] A plurality of sensor components are provided inside the pump housing 100, including: a rotational speed sensor 111 for detecting the rotational speed of the centrifugal impeller 200, a flow rate sensor 121 for monitoring the fluid flow rate, and a pressure sensor 131 for detecting pressure. These sensors collect the internal operating state of the pump body in real time and transmit the detection signals to the data processing module.

[0038] The data processing module receives the signals sent by the rotational speed sensor 111, the flow rate sensor 121 and the pressure sensor 131, filters, corrects errors and fuses the original signals through the built-in embedded processor and digital signal processing algorithm, and judges in real time whether the current water pump system is in the target operating state. If the water pump pressure deviates from the target value, the data processing module outputs an alarm signal.

[0039] When the exposed area of the centrifugal blade 230 becomes larger, the flow rate increases and the pressure rises; when the area becomes smaller, the flow rate decreases and the pressure drops. Thus, dynamic mechanical adjustment of the pump pressure is realized, and a closed-loop control is formed through feedback to maintain the stability of the system pressure.

[0040] To ensure stability, the slip ring 220 is set as an annular structure that slidably abuts against the inner wall of the pump housing 100, and its outer surface is a smooth curved surface to reduce friction. The lining plate 130 is made of polytetrafluoroethylene, is in the shape of multiple arc-shaped plates, and is connected to the inner wall of the pump housing 100 through an elastic material, and is used to absorb mechanical vibration and reduce noise and impact under high-frequency operation.

[0041] In the description of this specification, the descriptions of terms such as "one embodiment", "some embodiments", "specific embodiments", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0042] Although the embodiments of the present invention 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 principles and spirit of the present invention, and the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A high-precision water pump pressure controller, characterized in that, Comprising: A pump housing (100), a centrifugal impeller (200) and an adjusting ring group (300). One side of the pump housing (100) is fixedly connected with a bearing bracket (110). A volute tube (120) is provided on the surface of the pump housing (100). A lining plate (130) is provided on the inner wall surface of the pump housing (100). A rotational speed sensor (111) and a flow velocity sensor (121) are respectively provided inside the bearing bracket (110) and the volute tube (120). A pressure sensor (131) connected to the inner wall of the pump housing (100) is provided on the surface of the lining plate (130). A dynamic seal ring facing the surface of the bearing bracket (110) is provided on one side of the pump housing (100). The adjusting ring group (300) slidably penetrates through the surface of the dynamic seal ring. The centrifugal impeller (200) is rotatably installed inside the pump housing (100), and one end of the centrifugal impeller (200) is connected with a rotating shaft arranged through the bearing bracket (110). The centrifugal impeller (200) includes a wheel seat (210), a slip ring (220), centrifugal blades (230) and a synchronous gear ring (240) rotatably installed inside the wheel seat (210). A plurality of receiving grooves (211) corresponding to the centrifugal blades (230) one by one are formed inside the wheel seat (210). The centrifugal blades (230) are rotatably installed on the surface of the wheel seat (210), and a transmission tooth groove (231) is provided on one side of the centrifugal blades (230). A worm gear rack (241) meshing with the surface of the transmission tooth groove (231) is provided on the surface of the synchronous gear ring (240). A slip ring (220) is fixedly installed on the surface of the wheel seat (210). The adjusting ring group (300) is used to drive the synchronous gear ring (240) to rotate when engaged with the surface of the synchronous gear ring (240). The output ends of the rotational speed sensor (111), the flow velocity sensor (121) and the pressure sensor (131) are electrically connected to a data processing module.

2. The high-precision water pump pressure controller according to claim 1, wherein The lining plate (130) is a component made of polytetrafluoroethylene material, and the lining plate (130) is in the shape of an arc plate and is assembled and spliced by a plurality of arc plates. The pressure sensors (131) are arranged corresponding to each arc plate one by one.

3. The high-precision water pump pressure controller according to claim 1, characterized in that, The rotational speed sensor (111) includes a high-precision photoelectric encoder for real-time monitoring of the rotational speed of the centrifugal pump. The flow velocity sensor (121) adopts ultrasonic sensing technology to real-time monitor the change of the fluid flow velocity inside the water pump. The pressure sensor (131) is a MEMS pressure sensor capable of providing accurate feedback signals in a high-pressure environment.

4. The high-precision water pump pressure controller according to claim 1, wherein The data processing module includes an embedded processor, which collects signals from the rotational speed sensor (111), the flow velocity sensor (121) and the pressure sensor (131) in real time and performs data filtering, error correction and data fusion by using digital signal processing algorithms.

5. The high-precision water pump pressure controller according to claim 1, wherein The centrifugal blades (230) are rotatably installed on the surface of the wheel seat (210) and can be received inside the receiving grooves (211). The worm gear rack (241) is in the shape of a planar spiral strip and meshes with the surface of the transmission tooth groove (231).

6. The high-precision water pump pressure controller according to claim 1, characterized in that, The adjusting ring group (300) includes a sliding rod (310), a joint ring (320) and a hand-rotating ring (330). The sliding rod (310) slides through the surface of the dynamic sealing ring, and the joint ring (320) and the hand-rotating ring (330) are fixed at both ends of the sliding rod (310). One side of the synchronous gear ring (240) is provided with insertion convex teeth (242) meshing with the surface of the joint ring (320).

7. The high-precision water pump pressure controller according to claim 1, characterized in that, The slip ring (220) has an annular structure and is in sliding contact with the inner side of the pump box (100). The outer surface of the slip ring (220) is a smooth curved surface.

8. The high-precision water pump pressure controller according to claim 1, characterized in that, The lining plate (130) is connected to the inner wall of the pump box (100) through an elastic material, and is used for shock absorption and reducing the influence of the vibration of the water pump under high-frequency operation on the equipment.

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