Self-priming pump with pressure monitoring function

Abstract

The utility model discloses a self priming pump with pressure monitoring function, including base, the base upper end fixedly connected with pump body and processing box, the pump body is connected with processing box intercommunication, and installs pressure sensor on the intercommunication pipeline, the filter screen is rotatively connected in processing box, the cleaning brush radius is filter screen inner diameter half, install drive mechanism and elastic mechanism in processing box. The utility model discloses a rotatable filter screen, drive blade and the drive mechanism that sleeve ring and sliding slot cooperation, and the elastic mechanism that cleaning brush, sliding rod and spring constitute, utilize liquid circulation drive filter screen rotation and realize even impurity adhesion, and make cleaning brush self -adaptation to adhere to filter screen surface and carry out overall cleaning through elastic force, effectively solved the technical defects, such as traditional self priming pump fixed type filter screen easy partial blockage, artificial cleaning complicated and not thorough cleaning.

Description

Technical Field

[0001] This utility model relates to the field of self-priming pump technology, specifically a self-priming pump with pressure monitoring function. Background Technology

[0002] Self-priming pumps, widely used in liquid transportation, rely on stable suction head and flow rate for their core performance. In actual operation, clogging of the suction line and pump inlet by impurities is a common problem leading to performance degradation and even malfunction. Existing self-priming pumps typically have a fixed filter at the inlet to intercept impurities; however, this filter is prone to clogging during continuous operation. The current technical challenge lies in the lack of an effective clogging warning mechanism: operators often only detect clogging by observing a significant decrease in flow rate or abnormal noises from the pump, which is often a delayed indicator. By this time, the pump may already be in an inefficient or overloaded state, affecting not only work efficiency but also potentially accelerating pump wear or damaging seals due to abnormal pressure, posing safety hazards and increasing maintenance costs.

[0003] Furthermore, existing technologies for cleaning and maintaining filters generally suffer from low efficiency and cumbersome operation. A common solution is to manually disassemble the filter for cleaning after shutdown, which not only interrupts the workflow and increases manual labor but also may introduce the risk of poor sealing during reinstallation. Although some designs attempt to integrate a fixed cleaning brush inside the pump body, the cleaning effect is often uneven and incomplete because the filter is fixed or the cleaning brush lacks an adaptive clamping mechanism, especially in effectively removing adhesive impurities or minor deformations of the filter. After long-term operation, the gap between the cleaning brush and the filter increases, further reducing cleaning efficiency, ultimately still requiring manual intervention. Therefore, this invention proposes a self-priming pump with pressure monitoring function to solve the above problems. Utility Model Content

[0004] (a) Technical problems to be solved To address the shortcomings of existing technologies, such as easy local clogging of filters, incomplete cleaning, and lack of early warning, this invention achieves uniform filtration, automatic cleaning, and early warning of clogging by incorporating a rotatable filter, a spring-loaded cleaning brush, and a pressure sensor. This avoids the problems of inefficient operation, overload damage, and cumbersome manual maintenance associated with traditional self-priming pumps.

[0005] (II) Technical Solution To achieve the above objectives, this utility model provides the following technical solution: a self-priming pump with pressure monitoring function, comprising a base, a pump body and a processing box fixedly connected to the upper end of the base, the pump body and the processing box being interconnected, and a pressure sensor installed on the connecting pipe, a filter screen being rotatably connected inside the processing box, an inlet pipe being installed on the outer wall of the processing box, the inlet pipe being close to the edge of the outer wall of the processing box, a cleaning brush being slidably connected inside the processing box, the processing box and the filter screen being circular, the radius of the cleaning brush being half the inner diameter of the filter screen, and a drive mechanism and an elastic mechanism being installed inside the processing box; The drive mechanism is used to drive the filter screen to rotate, so as to achieve a uniform filtration effect; The elastic mechanism is used to drive the cleaning brush to fit tightly against the outer wall of the filter screen to improve the cleaning effect.

[0006] Preferably, the driving mechanism includes a collar, the filter screen is installed inside the collar, a sliding groove is provided inside the processing box, the inner wall of the sliding groove is circular, multiple sets of balls are provided on the outer wall of the collar, and the multiple sets of balls rotate inside the sliding groove, the filter screen is solid at its axis, and a driving blade is rotatably connected thereto.

[0007] Preferably, the elastic mechanism includes a side plate fixedly connected to the inner wall of the processing box, and two sets of sliding rods are slidably connected to the outer wall of the side plate, with one end of each set of sliding rods fixedly connected to a cleaning brush.

[0008] Preferably, a limiting block is fixedly connected to the other end of each of the two sets of slide rods, and the radius of the limiting block is larger than the radius of the slide rod.

[0009] Preferably, each of the sliding rods is fitted with a spring on its outer wall, one end of the spring is fixedly connected to the side plate, and the other end of the spring is fixedly connected to the limiting block.

[0010] Preferably, the cleaning brush and the drive blade are respectively installed on both sides of the filter screen, and the cleaning brush is installed on the front side of the filter screen.

[0011] (III) Beneficial Effects Compared with the prior art, this utility model provides a self-priming pump with pressure monitoring function, which has the following beneficial effects: 1. This utility model utilizes a rotatable filter screen, a drive mechanism consisting of a drive blade and a collar that cooperates with a sliding groove, and an elastic mechanism composed of a cleaning brush, a sliding rod, and a spring. It uses liquid circulation to drive the filter screen to rotate, achieving uniform adhesion of impurities. The elastic force enables the cleaning brush to adaptively conform to the filter screen surface for comprehensive cleaning. This effectively solves the technical defects of traditional self-priming pump fixed filter screens that are prone to local clogging, cumbersome manual cleaning, and incomplete cleaning.

[0012] 2. This utility model uses a pressure monitoring system composed of a pressure sensor on the connecting pipeline and a controller for the pump body to capture pressure changes caused by filter blockage in real time and trigger an early warning signal, thereby achieving early identification and intervention of blockage. This effectively avoids the problems of inefficient operation or overload damage of the pump body caused by the lack of an effective early warning mechanism and reliance on lag phenomena to judge blockage in traditional self-priming pumps. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of a self-priming pump with pressure monitoring function proposed in this utility model; Figure 2 for Figure 1 Structural diagram; Figure 3 for Figure 1 Schematic diagram of the structure at the central processing unit; Figure 4 for Figure 3 Enlarged schematic diagram of the structure at point A in the middle; Figure 5 for Figure 3 Structural diagram; Figure 6 for Figure 3 Schematic diagram of cross-section structure.

[0014] In the diagram: 1. Base; 2. Pump body; 3. Processing tank; 4. Inlet pipe; 5. Filter screen; 6. Collar; 7. Side plate; 8. Cleaning brush; 9. Slide rod; 10. Limiting block; 11. Spring; 12. Drive blade; 13. Slide groove; 14. Pressure sensor. Detailed Implementation

[0015] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0016] This utility model provides a technical solution for a self-priming pump with pressure monitoring function: Please see Figure 1-6A self-priming pump with pressure monitoring function includes a base 1, a pump body 2 and a processing tank 3 fixedly connected to the upper end of the base 1, the pump body 2 and the processing tank 3 are interconnected, and a pressure sensor 14 is installed on the connecting pipe, a filter screen 5 is rotatably connected inside the processing tank 3, an inlet pipe 4 is installed on the outer wall of the processing tank 3, the inlet pipe 4 is close to the edge of the outer wall of the processing tank 3, a cleaning brush 8 is slidably connected inside the processing tank 3, the processing tank 3 and the filter screen 5 are both circular, the radius of the cleaning brush 8 is half the inner diameter of the filter screen 5, and a drive mechanism and an elastic mechanism are installed inside the processing tank 3. The drive mechanism is used to drive the filter screen 5 to rotate in order to achieve a uniform filtration effect; The flexible mechanism is used to drive the cleaning brush 8 to fit tightly against the outer wall of the filter screen 5 to improve the cleaning effect; Furthermore, the pressure sensor 14 is electrically connected to the controller of the pump body 2, which can transmit the detected pressure data to the controller in real time. When the pressure value exceeds the preset range, the controller can issue an early warning signal in time, so that the operator can deal with potential faults in a timely manner.

[0017] The drive mechanism includes a collar 6, a filter screen 5 installed inside the collar 6, a slide groove 13 opened inside the processing box 3, the inner wall of the slide groove 13 is circular, multiple sets of balls are provided on the outer wall of the collar 6, and the multiple sets of balls rotate inside the slide groove 13. The filter screen 5 is solid at the axis, and a drive blade 12 is rotatably connected here. Furthermore, the balls are made of high-strength wear-resistant steel, and each group has 3-5 balls, which are evenly distributed along the outer circumference of the collar 6. This reduces the frictional resistance between the collar 6 and the slide groove 13, ensuring that the filter screen 5 rotates more smoothly and stably.

[0018] The elastic mechanism includes a side plate 7 fixedly connected to the inner wall of the treatment box 3, and two sets of slide rods 9 slidably connected to the outer wall of the side plate 7. One end of each set of slide rods 9 is fixedly connected to the cleaning brush 8. Furthermore, the side plate 7 is provided with sliding holes that are adapted to the slide rod 9. The inner wall of the sliding hole is provided with a lubricating layer to reduce the resistance when the slide rod 9 slides, and to ensure that the cleaning brush 8 can adaptively adjust its position according to the slight deformation of the filter screen 5.

[0019] The other end of each of the two sets of slide rods 9 is fixedly connected to a limiting block 10. The radius of the limiting block 10 is larger than the radius of the slide rod 9. A spring 11 is sleeved on the outer wall of each slide rod 9. One end of the spring 11 is fixedly connected to the side plate 7, and the other end of the spring 11 is fixedly connected to the limiting block 10. Furthermore, the initial compression of the spring 11 is set according to the required contact pressure between the cleaning brush 8 and the filter screen 5, and the surface of the spring 11 is provided with an anti-corrosion coating to extend its service life in humid environments.

[0020] The cleaning brush 8 and the drive blade 12 are respectively installed on both sides of the filter screen 5, and the cleaning brush 8 is installed on the front side of the filter screen 5.

[0021] In practical use, the working principle of this utility model is as follows: When the operator uses the self-priming pump with pressure monitoring function, the base 1 provides stable support for the entire device, the pump body 2 and the processing box 3 are in the initial standby state, at which time the pressure sensor 14 has been powered on and started to monitor the pressure baseline data in the connecting pipeline in real time. After the pump head 2 starts, the liquid enters the treatment tank 3 through the inlet pipe 4. Since the inlet pipe 4 is close to the outer edge of the treatment tank 3, the liquid forms a circulating flow along the tank wall as it flows in. This circulating flow impacts the drive blades 12 mounted at the axis of the filter screen 5, causing the filter screen 5 to rotate along with the collar 6. Multiple sets of ball bearings on the outer wall of the collar 6 roll smoothly within the circular groove 13, significantly reducing frictional resistance during rotation. This allows the filter screen 5 to rotate stably, ensuring that impurities in the liquid adhere evenly to the surface of the filter screen 5, avoiding the clogging problem caused by excessively rapid accumulation of impurities in localized areas, common with traditional fixed filters. During the rotation of the filter screen 5, the sliding rod 9 on the side plate 7, under the continuous push of the spring 11, causes the cleaning brush 8 to fit tightly against the front outer wall of the filter screen 5. The initial compression of the spring 11 is preset to ensure that the cleaning brush 8 and the filter screen 5 maintain a suitable contact pressure. When the filter screen 5 undergoes slight deformation during long-term use, the sliding rod 9 can slide flexibly along the sliding hole on the side plate 7. With the reduced resistance from the lubrication layer on the inner wall of the sliding hole, the cleaning brush 8 can adaptively adjust its position and always maintain close contact with the filter screen 5. The continuous rotation of the filter screen 5 allows the cleaning brush 8 to thoroughly and evenly clean the entire surface of the filter screen, effectively removing attached impurities and solving the problem of incomplete cleaning caused by the traditional fixed cleaning brush 8 due to poor contact or limited cleaning range. Meanwhile, the pressure sensor 14 on the pipeline connecting pump body 2 and processing tank 3 continuously transmits the real-time pressure change data to the controller of pump body 2. When the flow area of ​​filter screen 5 gradually decreases due to the residue of a small amount of impurities, the pressure in the pipeline will rise accordingly. When the pressure value exceeds the preset range, the controller immediately issues an early warning signal to remind the operator to take timely and targeted measures. This achieves early warning of blockage and avoids the situation where traditional self-priming pumps lack an effective early warning mechanism and can only judge blockage by a significant decrease in flow or abnormal noise from the pump body, which leads to inefficient operation or overload damage of pump body 2. Operators can monitor the self-priming pump's operating status in real time by observing the pressure data and warning signals on the controller. If a warning signal is received, the operator can determine whether it is necessary to stop the pump and clean the filter screen 5 based on the actual situation. However, since the self-priming pump has an automatic cleaning function, it can usually maintain stable operation for a relatively long period of time, reducing the frequency of manual intervention. In summary, the pump body 2 with pressure monitoring function achieves uniform filtration, automatic cleaning, and early warning of blockage of the filter screen 5 through the coordinated work of the drive mechanism, elastic mechanism, and pressure monitoring system. It effectively solves the shortcomings of traditional self-priming pumps in terms of impurity filtration, cleaning and maintenance, and fault warning, and provides a stable, efficient, and safe guarantee for liquid transportation operations.

[0022] The above are merely specific embodiments of this utility model, but the technical features of this utility model are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on this utility model to solve essentially the same technical problems and achieve essentially the same technical effects are all covered within the protection scope of this utility model.

Claims

1. A self-priming pump with pressure monitoring function, comprising a base (1), characterized in that: The upper end of the base (1) is fixedly connected to the pump body (2) and the processing box (3). The pump body (2) and the processing box (3) are interconnected, and a pressure sensor (14) is installed on the connecting pipe. A filter screen (5) is rotatably connected inside the processing box (3). An inlet pipe (4) is installed on the outer wall of the processing box (3). The inlet pipe (4) is close to the edge of the outer wall of the processing box (3). A cleaning brush (8) is slidably connected inside the processing box (3). The processing box (3) and the filter screen (5) are both circular. The radius of the cleaning brush (8) is half the inner diameter of the filter screen (5). A drive mechanism and an elastic mechanism are installed inside the processing box (3). The driving mechanism is used to drive the filter screen (5) to rotate so as to achieve a uniform filtration effect; The elastic mechanism is used to drive the cleaning brush (8) to fit tightly against the outer wall of the filter screen (5) to improve the cleaning effect.

2. A self-priming pump with pressure monitoring function according to claim 1, characterized in that: The drive mechanism includes a collar (6), the filter screen (5) is installed inside the collar (6), the processing box (3) is provided with a slide groove (13), the inner wall of the slide groove (13) is circular, the outer wall of the collar (6) is provided with multiple sets of balls, and the multiple sets of balls rotate in the slide groove (13). The filter screen (5) is solid at the axis, and a drive blade (12) is rotatably connected here.

3. A self-priming pump with pressure monitoring function according to claim 2, characterized in that: The elastic mechanism includes a side plate (7) fixedly connected to the inner wall of the treatment box (3), and two sets of slide rods (9) slidably connected to the outer wall of the side plate (7). One end of each set of slide rods (9) is fixedly connected to a cleaning brush (8).

4. A self-priming pump with pressure monitoring function according to claim 3, characterized in that: The other end of each of the two sets of slide rods (9) is fixedly connected to a limiting block (10), the radius of which is larger than that of the slide rod (9).

5. A self-priming pump with pressure monitoring function according to claim 4, characterized in that: Springs (11) are fitted on the outer wall of each slide rod (9). One end of the spring (11) is fixedly connected to the side plate (7), and the other end of the spring (11) is fixedly connected to the limiting block (10).

6. A self-priming pump with pressure monitoring function according to claim 5, characterized in that: The cleaning brush (8) and the drive blade (12) are respectively installed on both sides of the filter screen (5), and the cleaning brush (8) is installed on the front side of the filter screen (5).

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