An energy-saving centrifugal pump

Abstract

This invention belongs to the field of centrifugal pump technology, and particularly relates to an energy-saving centrifugal pump, including a pump housing, an inlet fixedly connected to the pump housing, a rotating plate rotatably connected inside the pump housing, a partition plate fixedly connected to the rotating plate, multiple centrifugal impellers fixedly connected to the partition plate, a centrifugal structure slidably connected to the rotating plate, a drain outlet provided on the upper side of the pump housing, the centrifugal structure including a slide rail fixedly connected to the partition plate, a centrifugal block slidably connected to the slide rail, a tension spring fixedly connected between the rotating plate and the centrifugal block, a light bulb fixedly connected to the centrifugal block, multiple transparent plates opened on the pump housing, and a shielding strip fixedly connected to the centrifugal block, which can stably and reliably provide feedback on the rotation speed, making it convenient for operators to accurately adjust the rotation speed to achieve energy-saving effects.

Description

Technical Field

[0001] This invention belongs to the field of centrifugal pump technology, and particularly relates to an energy-saving centrifugal pump. Background Technology

[0002] Centrifugal pumps, as core equipment in the fluid transport field, are widely used in farmland irrigation, chemical production, municipal water supply, and other scenarios. Their conventional centrifugal transport structure is a mature technology. To achieve energy-saving operation, the industry typically needs to monitor and regulate the centrifugal pump speed. Traditional solutions often use an electronically controlled speed detection structure directly mounted on the motor shaft to obtain speed data. However, centrifugal pumps often operate in harsh environments with high humidity, vibration, and dust. After long-term use, the electronically controlled detection structure is susceptible to environmental corrosion and mechanical vibration, leading to problems such as poor contact, signal distortion, or even complete failure, making it impossible to provide stable and reliable speed information.

[0003] Due to the lack of stability and accuracy in speed monitoring, operators find it difficult to precisely adjust the motor speed according to actual conveying needs. As a result, the equipment often operates at its rated speed for extended periods, leading to significant energy waste under light load conditions and negating any energy-saving benefits. Furthermore, abnormal speeds cannot be detected promptly. Excessively high speeds can accelerate wear on core components such as the rotor, impeller, and motor, shortening the equipment's lifespan; conversely, excessively low speeds fail to meet conveying flow and head requirements, impacting the continuity of production, irrigation, and other operations. Summary of the Invention

[0004] In view of this, the technical problem to be solved by the present invention is to provide an energy-saving centrifugal pump that can stably and reliably provide feedback on the rotation speed, making it easy for operators to accurately adjust the rotation speed to achieve energy-saving effects.

[0005] An energy-saving centrifugal pump includes a pump housing, an inlet fixedly connected to the pump housing, a rotating plate rotatably connected inside the pump housing, a partition plate fixedly connected to the rotating plate, multiple centrifugal impellers fixedly connected to the partition plate, a centrifugal structure slidably connected to the rotating plate, and a drain outlet provided on the upper side of the pump housing.

[0006] The centrifugal structure includes a slide rail fixed to a partition plate, a centrifugal block slidably connected on the slide rail, and a tension spring fixed between the rotating plate and the centrifugal block.

[0007] A light bulb is fixed to the centrifugal block, and multiple transparent plates are provided on the pump casing.

[0008] A shielding strip is fixed to the centrifuge block.

[0009] An arc-shaped block is fixedly connected to the centrifugal block, and multiple sliding columns are slidably connected inside the pump housing. Each sliding column has a striking ball fixedly connected to its front end, and the striking ball can contact the arc-shaped block. A compression spring A is fixedly connected between the sliding column and the pump housing.

[0010] The beneficial effects of this equipment are: it can provide stable and reliable feedback on the rotation speed, making it easy for staff to accurately adjust the rotation speed to achieve energy-saving effects. Through the sliding distance of the centrifugal structure, the rotation speed status can be fed back in real time, allowing staff to promptly detect abnormal rotation speeds and make quick adjustments, avoiding wear and malfunctions caused by abnormal rotation speeds, extending the service life of the equipment, reducing the cost of equipment maintenance and replacement, and ensuring the continuity of operations. Attached Figure Description

[0011] The present invention will now be described in further detail with reference to the accompanying drawings and specific implementation methods.

[0012] Figure 1 and Figure 2 A schematic diagram of the overall structure of an energy-saving centrifugal pump;

[0013] Figure 3 This is a schematic diagram of the cross-sectional structure of the pump casing;

[0014] Figure 4 This is a schematic diagram of the centrifugal impeller.

[0015] Figure 5 This is a schematic diagram of the partition plate structure;

[0016] Figure 6 This is a schematic diagram of the centrifuge block structure;

[0017] Figure 7 This is a schematic diagram of the shielding strip.

[0018] Figure 8 This is a schematic diagram of the cross-sectional structure of the pump casing;

[0019] Figure 9 This is a schematic diagram of the structure of the inspection rod;

[0020] Figure 10 This is a schematic diagram of the structure of a ball being struck. Detailed Implementation

[0021] An energy-saving centrifugal pump includes a pump housing 101, an inlet 103 fixedly connected to the pump housing 101, a rotating plate 201 rotatably connected inside the pump housing 101, a partition plate 204 fixedly connected to the rotating plate 201, a plurality of centrifugal impellers 202 fixedly connected to the partition plate 204, a centrifugal structure slidably connected to the rotating plate 201, a drain outlet provided on the upper side of the pump housing 101, and a motor externally connected to the pump housing 101 capable of driving the rotating plate 201 to rotate.

[0022] The motor drives the rotating plate 201 to rotate at high speed. During the rotation of the rotating plate 201, the partition plate 204 will rotate. The rotation of the partition plate 204 will drive multiple centrifugal impellers 202 to rotate. During this process, a vacuum will be formed in the center of the rotating plate 201, which will draw the liquid from the inlet 103 to the contact position with the partition plate 204. Then, the partition plate 204 will continue to rotate, which will cause the multiple centrifugal impellers 202 to apply centrifugal force to the liquid, gradually throwing the liquid towards the inner wall of the pump housing 101. With the continuous action of centrifugal force, the liquid will be thrown out from the drain port on the upper side of the pump housing 101, thus completing the centrifugal transport effect of the liquid.

[0023] The above-mentioned automatic pumping and centrifugal transport of liquids through rotating impellers and covers is a conventional technical means in this field and is a widely used existing technology in centrifugal pumps. It is not the direction of improvement of this application, so it will not be described in detail here.

[0024] During the rotation of the rotating plate 201, the centrifugal structure on the rotating plate 201 is subjected to centrifugal force and thus slides adaptively on the rotating plate 201. The faster the rotating plate 201 rotates, the farther the centrifugal structure slides on the rotating plate 201. Thus, the rotation speed of the rotating plate 201 can be clearly displayed through the centrifugal structure, which makes it easy for the staff to accurately know the rotation speed of the rotating plate 201. Then, the rotation speed of the rotating plate 201 can be adjusted in time according to the actual use needs, thereby significantly reducing the energy consumption under light load and achieving energy saving effect. The rotation speed of the rotating plate 201 can be reliably displayed by the physical change of the sliding distance of the centrifugal structure. This effectively avoids the situation in the traditional method of directly connecting the electronic speed test structure to the motor shaft. After long-term use, the speed test structure may fail due to environmental influences or vibration, which will result in the inability to reliably display the motor speed and thus fail to achieve energy saving effect.

[0025] Centrifugal pumps are often used in complex environments with high humidity, vibration, and dust, such as farmland irrigation sites, chemical workshops, and underground pump rooms. After long-term use, the electrical control structure is susceptible to environmental corrosion and vibration, resulting in problems such as poor contact and malfunction, which makes it impossible to accurately monitor the motor speed.

[0026] In actual use, the delivery requirements of centrifugal pumps are not constant. For example, during farmland irrigation, different crops and different irrigation stages have different flow rate requirements; in industrial transportation, the liquid delivery volume at different production stages also fluctuates. This necessitates frequent adjustments to the motor speed to match actual needs and reduce energy consumption.

[0027] If the actual rotational speed cannot be known, the staff cannot adjust the speed according to the light load conditions and can only keep the motor running at the rated speed, resulting in a lot of energy waste. This structure adopts a centrifugal force driven physical sliding monitoring method, which can display the rotational speed stably for a long time, fundamentally solving the fault hazards of traditional electric control monitoring structures and ensuring that the energy-saving adjustment function does not fail.

[0028] In actual use, if the rotation speed cannot be accurately monitored, it will not only cause energy waste, but also cause excessive wear of components such as the rotating plate, centrifugal impeller, and motor due to excessive rotation speed, thus shortening the service life of the equipment; if the rotation speed is too low, it will not be able to meet the conveying requirements and affect normal operations such as production and irrigation.

[0029] This structure, through the sliding distance of the centrifugal structure, can provide real-time feedback on the rotational speed. Operators can promptly detect abnormal rotational speeds and make quick adjustments, avoiding wear and malfunctions caused by abnormal speeds, extending equipment lifespan, reducing maintenance and replacement costs, and ensuring operational continuity.

[0030] The centrifugal structure includes a slide rail 601 fixed to the partition plate 204, a centrifugal block 604 slidably connected to the slide rail 601, and two tension springs 602 fixed between the rotating plate 201 and the centrifugal block 604.

[0031] During the rotation of the partition plate 204, the centrifugal block 604 is subjected to centrifugal force, which causes it to slide on the slide rail 601 against the elastic force of the two tension springs 602. At the same time, the sliding distance of the centrifugal block 604 is positively correlated with the rotation speed of the partition plate 204. Therefore, by measuring the sliding distance of the centrifugal block 604 on the slide rail 601, the rotation speed of the rotating plate 201 can be accurately determined, which facilitates timely reduction of the motor speed under light load requirements and achieves energy-saving effect.

[0032] The symmetrical arrangement of the two tension springs 602 ensures that the centrifugal block 604 is subjected to balanced force during sliding, effectively preventing the risk of jamming caused by unilateral force, and ensuring smooth sliding and accurate indication.

[0033] A lamp ball 605 is fixed to the centrifugal block 604, and multiple transparent plates 102 are provided on the pump housing 101. Each transparent plate 102 is provided with scale marks that gradually increase from the center to the arc direction.

[0034] In actual use, staff can directly observe the location of the centrifugal block 604 through multiple transparent plates 102. By observing the sliding of the centrifugal block 604 on the slide rail 601, they can accurately determine the rotation speed of the rotating plate 201 and realize timely adjustment. The rotation speed data can be obtained directly and reliably through mechanical transmission and manual observation, effectively avoiding errors of electronic control components and improving the reliability of equipment use.

[0035] When the rotating plate 201 is rotating at high speed, it is extremely difficult to directly observe the position of the centrifugal block 604 on it. The continuous light emitted by the lamp ball 605, through multiple ring-shaped transparent plates 102, allows the operator to locate the real-time position of the centrifugal block 604 from outside the pump housing 101, which brings convenience to the observation and operation.

[0036] Meanwhile, the light bulb 605 continues to light up, and as the partition plate 204 rotates, the light bulb 605 forms a stable and obvious arc trajectory on multiple transparent plates 102, which makes it easy for people to directly observe the position of the centrifugal block 604 on the slide rail 601, and further facilitates the acquisition of speed data. Due to the persistence of vision, the high-speed rotating light bulb 605 will form a continuous light arc trajectory in the eyes of the observer, making the speed reading more stable and intuitive, and avoiding the difficulty of tracking a single point.

[0037] The scale markings on the transparent plate 102, extending outwards from the center, provide a direct numerical reference for observing the radius of the light arc trajectory. Operators can quickly map the observed position of the centrifuge block 604 or the radius of the light arc to specific rotational speed ranges or values ​​without estimation, greatly improving the speed of judgment and the accuracy of adjustments.

[0038] A shielding strip 603 is fixedly attached to the centrifugal block 604.

[0039] The shielding strip 603 can shield the lamp ball 605, so that the light emitted from the upper side of the lamp ball 605 can be blocked and limited to a regular horizontal line by the shielding strip 603. This makes it easier for staff to directly observe the position of the centrifuge block 604 corresponding to multiple scale marks, and brings convenience to the subsequent operation of accurately obtaining the rotation speed data of the rotating plate 201.

[0040] The high-speed rotating light bulb 605 is itself a point light source, and visual persistence creates a light band of a certain width. Directly observing the outer edge of this light band to align with the scale mark 102 results in visual ambiguity and error. The shielding strip 603, through physical obstruction, strictly limits the light emitted from the upper side of the light bulb 605 to a clear and regular bright line, providing a visual reference line for the observer. The observer only needs to determine which scale mark this bright line aligns with to complete the reading, reducing the interference of ambient light on the observation.

[0041] An arc-shaped block 606 is fixedly connected to the centrifugal block 604. Multiple sliding columns 304 are slidably connected inside the pump housing 101. A striking ball 301 is fixedly connected to the front end of each sliding column 304. The striking ball 301 can contact the arc-shaped block 606. A compression spring A is fixedly connected between the sliding column 304 and the pump housing 101.

[0042] After the equipment finishes its liquid transfer operation, the operable turntable 201 can rotate slowly. During this process, the centrifugal block 604 will not be subjected to a centrifugal force sufficient to overcome the elastic force of the two tension springs 602, thus preventing the centrifugal block 604 from sliding on the slide rail 601. It will remain in contact with the multiple striking balls 301. Whenever the centrifugal block 604 contacts the striking ball 301, the sliding column 304 on the striking ball 301 will be subjected to a compressive force to overcome the elastic force of the compression spring A and retract into the pump housing 101. When the centrifugal block 604 and the striking ball 301 are misaligned... The sliding column 304 can be quickly reset by the elastic force of the compression spring A, thereby sending the striking ball 301 back to the contact position with the rotating plate 201, and then striking the rotating plate 201 once. That is, during the slow rotation of the rotating plate 201, multiple striking balls 301 will naturally strike the rotating plate 201 multiple times, causing the surface of the rotating plate 201 to rotate slightly, which facilitates the automatic knocking off of impurities adhering to the surface of the rotating plate 201, reducing the impurities remaining on the surface of the rotating plate 201, and thus effectively reducing the rotational load of the rotating plate 201 after long-term use, further achieving energy-saving effect.

[0043] After a centrifugal pump transports liquid containing impurities, scale easily accumulates on the surfaces of the rotor 201, partition plate 204, and centrifugal impeller 202. These deposits increase the mass imbalance and frictional resistance of the rotating parts, leading to increased motor load and hidden energy waste. This structure maintains the cleanliness of the surfaces of core moving parts such as the rotor 201 through regular automatic cleaning, fundamentally avoiding additional energy consumption caused by dirt accumulation.

[0044] Meanwhile, the setting that the tapping operation is only performed at low speeds can effectively reduce the wear or damage to the equipment caused during the tapping process and avoid the negative impact of high-speed rotation tapping.

[0045] The multiple striking balls 301 and sliding columns 304 are evenly distributed in the circumferential direction.

[0046] The multiple striking balls 301 and sliding columns 304 evenly distributed in the circumferential direction can provide a uniform striking effect to the rotating plate 201 during its rotation, thereby further facilitating the removal of all impurities adhering to the rotating plate 201 and providing sufficient convenience for subsequent energy-saving operations.

[0047] If the tapping points are not distributed evenly, some areas of the rotating plate 201 may not be effectively tapped, resulting in impurities remaining. The evenly distributed multiple tapping balls 301 ensure that the entire circumferential surface of the rotating plate 201 is covered by a basically equal tapping force during the low-speed rotation of one revolution, achieving cleaning without dead corners.

[0048] Evenly distributed striking force helps avoid microscopic deformation or uneven wear that may be caused by excessive impact at a single point or in a local area, and can also more effectively shake off impurities that are stuck together in all directions.

[0049] Thorough cleaning ensures that the rotational resistance of the rotating plate 201 remains close to its design value under clean conditions. This allows the speed monitoring based on the displacement of the centrifugal block 604 to reflect the actual changes in fluid load, rather than the false load caused by dirt accumulation. This makes energy-saving regulation more precise and effective.

[0050] A test rod 401 is slidably connected to the pump housing 101. A compression spring B is fixed between the test rod 401 and the pump housing 101. A displacement sensor is fixed to the pump housing 101. The moving end of the displacement sensor is fixed to the test rod 401. An inclined plate with a gradually increasing slope from bottom to top is provided on the front side of the test rod 401.

[0051] During the liquid transport process when the rotating plate 201 rotates at different speeds, when the centrifugal block 604 is subjected to centrifugal force and slides to a suitable position on the slide rail 601 against the elastic force of the two tension springs 602, as the rotating plate 201 continues to rotate, when the centrifugal block 604 drives the arc surface block 606 to contact the inspection rod 401, it will push the inspection rod 401 to slide on the pump housing 101 against the elastic force of the compression spring B. Since there is an inclined plate with a gradually increasing slope from bottom to top on the front side of the inspection rod 401, the distance that the inspection rod 401 can be pressed and slid is positively correlated with the distance that the centrifugal block 604 slides on the slide rail 601. Therefore, the rotation speed of the rotating plate 201 can be automatically known through the signal obtained by the displacement sensor, thereby achieving both manual visual observation of the rotation speed and automated acquisition of rotation speed information, further facilitating the acquisition of accurate rotation speed information.

[0052] The source of automated monitoring remains the displacement of the centrifugal block 604 on the slide rail 601 caused by centrifugal force. Therefore, it still possesses the core advantages of all-mechanical sensing methods, such as anti-interference, corrosion resistance, and long lifespan; only the subsequent signal conversion and reading methods are different.

[0053] It overcomes the shortcomings of subjective errors that may exist in manual observation, the inability to record continuously, and the difficulty in integrating into the control system. It is an important expansion and upgrade of the original system's functions, rather than a replacement.

[0054] This allows staff to freely choose to use either manual observation of the scale 102 or reading sensor data to obtain the rotational speed according to actual needs. This ensures that accurate rotational speed is obtained under any operating conditions and requirements, so that the fundamental goal of energy-saving regulation can be achieved in the most reliable and convenient way.

[0055] The inspection rod 401 has rounded chamfers on both the left and right sides.

[0056] The rounded chamfer facilitates the smooth sliding of the inspection rod 401 on the pump housing 101 when the arc block 606 contacts the inspection rod 401, thus providing convenience for the subsequent transmission process.

[0057] An electric push rod 402 is fixedly connected to the pump housing 101. An electromagnetic plate 403 is fixedly connected to the telescopic rod of the electric push rod 402. The electromagnetic plate 403 can attract and fix the inspection rod 401.

[0058] When the test rod 401 is not needed for automated speed testing, the telescopic rod of the electric push rod 402 pushes the electromagnetic plate 403 to contact the test rod 401. Then, the electromagnetic plate 403 is energized, which attracts the test rod 401. Then, the telescopic rod of the electric push rod 402 is retracted, which drives the test rod 401 into the pump housing 101, so that the test rod 401 no longer contacts the arc surface block 606. This avoids the wear and aging of the compression spring B caused by the continuous contact between 404 and the arc surface block 606 during equipment operation, and extends the service life of the equipment structure.

[0059] This protection mechanism can be activated when only manual visual monitoring via the transparent plate 102 is required, or when the equipment is in long-term stable operation and frequent speed monitoring is not necessary. The electric push rod 402 pushes the electromagnetic plate 403 until it is magnetically attached to the inspection rod 401 and then retracts, completely disengaging the inspection rod 401 from its contact path with the rotating component's arc-shaped block 606. This fundamentally eliminates the mechanical wear caused by continuous friction between the two during high-speed operation, and also avoids fatigue aging of the compression spring B due to prolonged working compression, protecting the mechanical precision of the electrical monitoring channel.

[0060] Meanwhile, in scenarios where remote data or automatic control is not required, it can be stored and protected, allowing the use of only a more durable pure mechanical vision system.

[0061] A retaining ring 203 is fixedly connected to the partition plate 204.

[0062] The retaining ring 203 can shield the slide rail 601, the striking ball 301 and the inspection rod 401 on the pump housing 101, thereby effectively preventing liquid from rushing into the back of the partition plate 204 and ensuring stable operation of the equipment.

Claims

1. An energy-saving centrifugal pump, characterized in that, The pump includes a pump housing, an inlet fixedly connected to the pump housing, a rotating plate rotatably connected inside the pump housing, a partition plate fixedly connected to the rotating plate, multiple centrifugal impellers fixedly connected to the partition plate, a centrifugal structure slidably connected to the rotating plate, and a drain outlet on the upper side of the pump housing.

2. The energy-saving centrifugal pump according to claim 1, characterized in that, The centrifugal structure includes a slide rail fixed to a partition plate, a centrifugal block slidably connected on the slide rail, and a tension spring fixed between the rotating plate and the centrifugal block.

3. The energy-saving centrifugal pump according to claim 2, characterized in that, A light bulb is fixed to the centrifugal block, and multiple transparent plates are provided on the pump casing.

4. An energy-saving centrifugal pump according to claim 3, characterized in that, A shielding strip is fixed to the centrifuge block.

5. An energy-saving centrifugal pump according to claim 4, characterized in that, An arc-shaped block is fixedly connected to the centrifugal block, and multiple sliding columns are slidably connected inside the pump housing. Each sliding column has a striking ball fixedly connected to its front end, and the striking ball can contact the arc-shaped block. A compression spring A is fixedly connected between the sliding column and the pump housing.

6. An energy-saving centrifugal pump according to claim 5, characterized in that, The multiple striking balls and sliding columns are evenly distributed in the circumferential direction.

7. An energy-saving centrifugal pump according to claim 6, characterized in that, An inspection rod is slidably connected to the pump housing, and a compression spring B is fixed between the inspection rod and the pump housing.

8. An energy-saving centrifugal pump according to claim 7, characterized in that, The inspection rod has rounded chamfers on both the left and right sides.

9. An energy-saving centrifugal pump according to claim 8, characterized in that, An electric push rod is fixedly connected to the pump housing, and an electromagnetic plate is fixedly connected to the telescopic rod of the electric push rod.

10. An energy-saving centrifugal pump according to claim 1, characterized in that, A retaining ring is fixedly attached to the partition plate.

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