An anti-blocking horizontal centrifugal pump

Abstract

The present invention relates to the technical field of horizontal centrifugal pumps, and specifically to an anti-blocking horizontal centrifugal pump, comprising: a driving motor and a centrifugal pump housing, wherein the centrifugal pump housing is located on one side of the driving motor, and a liquid inlet and a liquid outlet are provided on both sides of the centrifugal pump housing. An impeller mechanism is provided in the centrifugal pump housing, and the impeller mechanism is fixedly connected to the output end of the driving motor, and the liquid inlet is fixedly connected to the liquid inlet pipeline. An anti-blocking mechanism is provided between the liquid inlet pipeline and the liquid inlet, and the anti-blocking mechanism includes a sedimentation part and a grinding part, and both sides of the sedimentation part are fixedly connected to the liquid inlet and the liquid inlet pipeline respectively, and the liquid inlet and the liquid inlet pipeline are respectively located on both sides of the sedimentation part. A grinding part is also provided on the side of the sedimentation part close to the liquid inlet pipeline, and the grinding part is rotationally connected to the output end of the driving motor through a transmission mechanism. The present invention reduces the occurrence of blockage in the centrifugal pump.

Description

Technical Field

[0001] The invention relates to the technical field of horizontal centrifugal pumps, and more specifically, to an anti-blocking horizontal centrifugal pump. Background Art

[0002] A horizontal centrifugal pump is a type of fluid conveying equipment widely used in industries such as industry, agriculture, construction, and municipal administration. Its core operating principle is to use centrifugal force to draw fluid in from the pump's inlet and accelerate the fluid through the rotation of the impeller before discharging it from the outlet. Due to its simple structure, stable operation, and easy maintenance, horizontal centrifugal pumps have become an important component of fluid conveying systems. The working principle of horizontal centrifugal pumps is based on centrifugal force. When the pump's impeller rotates at high speed, the fluid is drawn into the center of the impeller and, under the action of centrifugal force, is flung toward the outer edge of the impeller. The kinetic energy is eventually converted into pressure energy through the diffuser section of the pump casing, thereby achieving fluid delivery. The impeller of a horizontal centrifugal pump is typically composed of multiple curved blades, and the structure of these blades directly affects the efficiency and performance of the pump.

[0003] However, when existing horizontal centrifugal pumps transport fluid, the fluid will carry flocs or solid particles, and the flow channel in the pump is very likely to become clogged, resulting in reduced operating efficiency, increased energy consumption and even equipment shutdown, seriously affecting production continuity and operating costs.

[0004] Therefore, an anti-blocking horizontal centrifugal pump is urgently needed to solve the problems existing in the current technology. Summary of the Invention

[0005] In view of this, the present invention proposes an anti-blocking horizontal centrifugal pump, which aims to solve the problem that the flow channel in the existing horizontal centrifugal pump is easily blocked.

[0006] The present invention provides an anti-blocking horizontal centrifugal pump, comprising:

[0007] A driving motor and a centrifugal pump casing, wherein the centrifugal pump casing is located on one side of the driving motor, and a liquid inlet and a liquid outlet are provided on both sides of the centrifugal pump casing. An impeller mechanism is provided in the centrifugal pump casing, and the impeller mechanism is fixedly connected to the output end of the driving motor. The liquid inlet is fixedly connected to the liquid inlet pipeline, and an anti-blocking mechanism is provided between the liquid inlet pipeline and the liquid inlet. The anti-blocking mechanism includes a sedimentation part and a grinding part, and both sides of the sedimentation part are fixedly connected to the liquid inlet and the liquid inlet pipeline respectively, and the liquid inlet and the liquid inlet pipeline are respectively located on both sides of the sedimentation part. A grinding part is also provided on the side of the sedimentation part close to the liquid inlet pipeline, and the grinding part is rotationally connected to the output end of the driving motor through a transmission mechanism.

[0008] Furthermore, the impeller mechanism includes a drive shaft, a coupling, a mechanical seal and a parallel impeller portion. The drive shaft is fixedly connected to the output end of the drive motor, and the drive shaft rotates coaxially with the drive motor. A coupling is provided on the side of the drive shaft close to the drive motor, a mechanical seal is provided at the connection between the drive shaft and the centrifugal pump casing, and the parallel impeller portion is fixedly connected to the end of the drive shaft away from the drive motor.

[0009] Furthermore, the parallel impeller portion includes a hub and blades, the hub is fixedly connected to the drive shaft, a plurality of blades are provided on both sides of the hub, and a composite curved surface component is provided on the side of the hub away from the drive shaft, the plurality of blades rotate and extend outward with the axis point of the hub as the starting point, and the plurality of blades on both sides of the hub are asymmetrical.

[0010] Furthermore, the composite curved surface assembly includes a peak protrusion arranged on the hub axis area, a sunken area arranged around the axis area, and a guide ridge arranged on the outer ring.

[0011] Furthermore, the sedimentation part includes a sedimentation shell, a filter screen and a conical mouth. The upper part of the sedimentation shell is connected to the liquid inlet, and the lower part of the sedimentation shell is connected to the liquid inlet pipeline. The filter screen is provided below the liquid inlet, and the filter screen is fixedly connected to the inner wall of the sedimentation shell. A conical mouth is provided below the liquid inlet pipeline, and the conical mouth is connected to the grinding part.

[0012] Furthermore, the grinding part includes a grinding wheel, a rotating shaft, a rotating grinding disc assembly and a rotating sleeve. The grinding wheel is fixedly connected to the precipitation shell, the rotating grinding disc assembly is arranged between the rotating sleeve and the grinding wheel, the rotating shaft passes through the rotating sleeve and is fixedly connected to the rotating grinding disc assembly, the rotating shaft is fixedly connected to the rotating sleeve, and the rotating shaft is rotatably connected to the transmission mechanism.

[0013] Furthermore, the rotating grinding disc assembly includes a solar grinding disc and a planetary grinding disc. The solar grinding disc is fixedly connected to the rotating shaft. A plurality of planetary grinding discs are provided, and the planetary grinding discs are engaged with the surface of the solar grinding disc.

[0014] Furthermore, the grinding part also includes a collection box, and the collection box is located below the grinding part.

[0015] Furthermore, the transmission mechanism includes a driving gear, a driven gear, a transmission bracket and a transmission belt. The driving gear is sleeved on the driving shaft. The driving gear and the driven gear are connected through the transmission belt. The rotating shaft passes through the driven gear and is rotatably connected to the transmission bracket.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention creates a front buffer and separation space through the setting of the sedimentation part. When the fluid containing solid impurities (such as flocs, particles or fibers) enters from the liquid inlet pipe, the larger or higher density impurities naturally sink to the bottom of the sedimentation part due to gravity, and the relatively clean liquid enters the pump cavity from the liquid inlet above the sedimentation part. The physical separation mechanism prevents the impurities from directly impacting and clogging the impeller mechanism or the narrow flow channel in the pump, thereby ensuring the purity of the fluid in the core working area of ​​the pump. The grinding part below the sedimentation part is linked to the drive motor, and the impurities settled here are instantly crushed into fine particles by the high-speed rotating grinding parts, which actively resolves the risk of continuous accumulation of sediment at the inlet to form blockage, so that the sedimentation part can It continuously plays a role of separation and will not fail due to self-clogging. Based on the grinding part, the concept of "sedimentation tank" or "filter screen" in traditional design that needs to be shut down for cleaning is transformed into an online, automatic impurity processing structure. Impurities are continuously crushed into fine particles that can pass through the impeller and pump body and discharged with the fluid, eliminating the tedious operation requirements of regularly dismantling and cleaning the liquid inlet filter or manually cleaning out the sediment. By preventing larger, harder or entangled impurities from directly entering the impeller area, the possibility of key working parts such as impeller blades and the inner wall of the pump casing being impacted, worn, entangled or stuck is reduced. The impeller operates in a cleaner environment, and its mechanical integrity and hydraulic efficiency are maintained for a long time, so that the pump can operate more stably under the designed flow and head parameters, close to its optimal efficiency point. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of this application. The exemplary embodiments and descriptions of this application are intended to explain this application and do not constitute an improper limitation on this application. In the accompanying drawings:

[0018] Figure 1 A schematic diagram of the overall structure of an anti-blocking horizontal centrifugal pump provided in an embodiment of the present invention;

[0019] Figure 2 A side view of the impeller mechanism in an anti-blocking horizontal centrifugal pump provided in an embodiment of the present invention;

[0020] Figure 3 A cross-sectional view of the sedimentation portion of an anti-blocking horizontal centrifugal pump provided in an embodiment of the present invention;

[0021] Figure 4 A cross-sectional view of the grinding portion of an anti-blocking horizontal centrifugal pump provided in an embodiment of the present invention.

[0022] Among them: 1. Drive motor; 2. Centrifugal pump housing; 3. Liquid inlet; 4. Liquid outlet; 5. Impeller mechanism; 501. Drive shaft; 502. Mechanical seal; 503. Hub; 504. Blade; 505. Peak protrusion; 506. Recessed area; 507. Guide ridge; 6. Anti-clogging mechanism; 610. Sedimentation section; 6101. Sedimentation housing; 6102. Filter screen; 6103. Conical mouth; 620. Grinding section; 6201. Grinding wheel; 6202. Rotating shaft; 6203. Rotating sleeve; 6204. Sun grinding disc; 6205. Planetary grinding disc; 6206. Collection box; 7. Transmission mechanism; 701. Driving gear; 702. Driven gear; 703. Transmission bracket; 704. Transmission belt; 8. Liquid inlet pipeline. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0024] In the description of this application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0025] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features indicated. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. Throughout this application, unless otherwise specified, "plurality" means two or more.

[0026] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0027] See Figure 1-2 As shown, this embodiment provides an anti-blocking horizontal centrifugal pump, including: a driving motor 1 and a centrifugal pump casing 2, the centrifugal pump casing 2 is located on one side of the driving motor 1, and a liquid inlet 3 and a liquid outlet 4 are provided on both sides of the centrifugal pump casing 2, an impeller mechanism 5 is provided in the centrifugal pump casing 2, the impeller mechanism 5 is fixedly connected to the output end of the driving motor 1, the liquid inlet 3 is fixedly connected to the liquid inlet pipeline 8, and an anti-blocking mechanism 6 is provided between the liquid inlet pipeline 8 and the liquid inlet 3, the anti-blocking mechanism 6 includes a sedimentation part 610 and a grinding part 620, the two sides of the sedimentation part 610 are respectively fixedly connected to the liquid inlet 3 and the liquid inlet pipeline 8, and the liquid inlet 3 and the liquid inlet pipeline 8 are respectively located on both sides of the sedimentation part 610, and a grinding part 620 is also provided on the side of the sedimentation part 610 close to the liquid inlet pipeline 8, and the grinding part 620 is rotationally connected to the output end of the driving motor 1 through a transmission mechanism 7.

[0028] Specifically, the driving motor 1 drives the impeller mechanism 5 located in the centrifugal pump casing 2 to rotate, thereby realizing the working effect of the centrifugal pump. However, during the operation of the centrifugal pump, there will inevitably be impurities such as solids or flocs in the fluid it inhales, and these impurities may be entangled in the impeller or stuck between the impeller and the centrifugal pump casing 2, causing the efficiency of the centrifugal pump to decrease. By adding a sedimentation portion 610 on one side of the liquid inlet 3 and connecting the liquid inlet pipe 8 to the sedimentation portion 610, the fluid entering through the liquid inlet pipe 8 will first fill the inside of the sedimentation portion 610, and the impurities contained in the fluid will sink to the grinding portion 620, and be broken up by the grinding portion 620, so that the fluid entering the inside of the centrifugal pump is relatively clean, reducing the risk of blockage.

[0029] As can be understood, the settling section 610 acts as a pre-buffer chamber, allowing solid particles, fiber clumps, and other impurities in the fluid to settle. Clean liquid then flows from the upper layer of the settling section 610 to the pump chamber inlet. This prevents impurities from directly contacting the impeller and pump casing flow path, preventing them from entangled with the impeller blades 504 or becoming lodged in the precise clearances. Impurities that sink to the bottom of the settling section 610 are pulverized into fine particles by the continuously rotating grinding section 620, eliminating the risk of secondary clogging caused by accumulated sediment in traditional settling structures and ensuring that the settling chamber maintains its effective separation capacity. The grinding section 620 is linked to the drive motor 1 to automatically pulverize impurities during pump operation. This eliminates the frequent maintenance requirements of disassembling and cleaning the filter and manually removing sediment, making it particularly suitable for operating conditions with unstable impurity loads. By preventing large or hard impurities from entering the impeller area, mechanical wear and impact damage to key components such as the impeller blades 504 and the pump casing inner wall are reduced. The impeller operates in a relatively clean environment, maintaining its structural integrity and hydraulic performance over the long term.

[0030] In some embodiments of the present application, the impeller mechanism 5 includes a drive shaft 501, a coupling, a mechanical seal 502 and a parallel impeller portion. The drive shaft 501 is fixedly connected to the output end of the drive motor 1, and the drive shaft 501 rotates coaxially with the drive motor 1. A coupling is provided on the side of the drive shaft 501 close to the drive motor 1, and a mechanical seal 502 is provided at the connection between the drive shaft 501 and the centrifugal pump housing 2. The parallel impeller portion is fixedly connected to the end of the drive shaft 501 away from the drive motor 1.

[0031] Specifically, the drive shaft 501 is fixedly connected to the drive motor 1 and rotates coaxially with the drive motor 1, driving the parallel impeller part to rotate coaxially, while the mechanical seal 502 prevents fluid leakage.

[0032] It can be understood that the drive shaft 501 is fixedly connected to the motor output end and rotates coaxially, ensuring that the motor power is directly transmitted to the impeller with minimal loss, avoiding energy loss or response delay due to transmission clearance, and the coupling is set at the motor end of the drive shaft 501 to absorb the slight axis deviation when the motor and pump body are installed or the vibration displacement during operation, and prevent shaft stress concentration or abnormal wear caused by misalignment. The mechanical seal 502 is installed at the interface between the drive shaft 501 and the pump casing, dynamically isolating the high-pressure fluid from leaking outward along the shaft gap, which is particularly suitable for conveying corrosive, toxic or high-value media. By blocking fluid leakage, it reduces equipment corrosion, electrical short circuit or working environment pollution caused by liquid overflow, thereby improving operational safety. The parallel impeller part enables multiple impellers to act on the fluid synchronously, achieving a multi-stage boosting effect in a single-stage structure, and improving the outlet pressure and head output. The superimposed flow field generated by the parallel impellers improves the pump's pressure stability under variable flow conditions, reducing the risk of surge at low flow rates and the tendency to cavitation at high flow rates. Furthermore, the parallel impeller layout partially offsets the axial thrust generated by the impeller on one side, reducing the load on the drive shaft 501 bearing and delaying bearing wear. The coupling's vibration-damping properties, combined with the precision coaxial drive, suppress abnormal vibration transmission during impeller rotation, reducing the risk of fatigue cracks in the shafting and support structure.

[0033] In some embodiments of this application, see Figure 2 As shown, the parallel impeller portion includes a hub 503 and blades 504. The hub 503 is fixedly connected to the drive shaft 501. A plurality of blades 504 are provided on both sides of the hub 503, and a composite curved surface component is provided on the side of the hub 503 away from the drive shaft 501. The plurality of blades 504 rotate outward and extend with the axis point of the hub 503 as the starting point, and the plurality of blades 504 on both sides of the hub 503 are asymmetrical.

[0034] In some embodiments of the present application, the compound curved surface assembly includes a peak protrusion 505 provided in the axial region of the hub 503 , a recessed region 506 provided around the axial region, and a guide ridge 507 provided on the outer ring.

[0035] Specifically, the parallel impeller part is different from the existing parallel impeller. The impellers on both sides are not symmetrical, and a peak protrusion 505 is provided on the side of the impeller facing the water inlet. A sunken recessed area 506 is provided around the peak protrusion 505, and the recessed area 506 located in the middle of the hub 503 is connected to the curved guide ridge 507.

[0036] As can be understood, the peak protrusion 505 on the inlet side of the hub 503 forms an axially raised structure, pre-compressing the incoming fluid. This allows the fluid to acquire initial kinetic energy before contacting the blades 504, reducing energy dissipation from high-speed fluid directly impacting the hub 503 wall. The axial recessed area 506 forms a low-pressure vortex buffer zone, guiding the core fluid naturally toward the root of the blades 504. The outer ring guide ridge 507 constrains the boundary layer fluid along a predetermined trajectory, preventing disordered interference between the mainstream and wall flows and enhancing the orderly energy transfer. The blades 504 on each side are asymmetric and extend outward in a rotational motion from the axis of the hub 503. They are differentiated in design to address the different pressure distribution characteristics on the inlet and outlet sides. The curvature of the inlet blades 504 is optimized to reduce the risk of fluid separation. The outlet blades 504 have a reinforced support structure to suppress high-pressure backflow disturbances. The reverse pressure pulses generated by the asymmetric blades 504 partially offset the inherent unidirectional axial thrust of the impeller, reducing bearing loads. The recessed area 506 uses a controllable vortex structure to capture and attenuate the secondary flow at the root of the blade 504, preventing the vortex from spreading to the mainstream area and redirecting the low-energy fluid to the high-pressure area to achieve partial kinetic energy recovery. The guide ridge 507 forms an annular acceleration channel, applying a directional shear force to the boundary layer fluid on the surface of the hub 503, which can prevent the accumulation of low-speed fluid and cause flow separation, and improve the velocity uniformity of the fluid in the working area of ​​the blade 504. The peak protrusion 505 pre-compresses the inflow, balancing the pressure distribution at the inlet of the blade 504 and weakening the pressure oscillation amplitude caused by sudden flow changes. The local low-pressure area formed by the sunken area 506 is controllable, avoiding the random generation of extreme low-pressure points at the root of the blade 504. The guide ridge 507 has a stabilizing effect on the boundary layer and delays the occurrence of local vaporization of the fluid. The synergistic effect of the asymmetric blade 504 and the curved surface component maintains the fluid adhesion in the flow channel at low flow rates, while suppressing diffusion losses at high flow rates, widening the high-efficiency operation range, and the blade 504 shape with an extended spiral envelope surface reduces the probability of fiber impurities being entangled on the surface of the blade 504, while the guide ridge 507 has a cleaning effect on the boundary layer, reducing the risk of particulate matter deposition on the surface of the hub 503.

[0037] In some embodiments of this application, see Figure 3As shown, the sedimentation part 610 includes a sedimentation shell 6101, a filter screen 6102 and a tapered mouth 6103. The upper part of the sedimentation shell 6101 is connected to the liquid inlet 3, and the lower part of the sedimentation shell 6101 is connected to the liquid inlet pipeline 8. A filter screen 6102 is provided below the liquid inlet 3, and the filter screen 6102 is fixedly connected to the inner wall of the sedimentation shell 6101. A tapered mouth 6103 is provided below the liquid inlet pipeline 8, and the tapered mouth 6103 is connected to the grinding part 620.

[0038] In some embodiments of the present application, the grinding portion 620 includes a grinding wheel 6201, a rotating shaft 6202, a rotating grinding disc assembly and a rotating sleeve 6203. The grinding wheel 6201 is fixedly connected to the precipitation shell 6101. A rotating grinding disc assembly is arranged between the rotating sleeve 6203 and the grinding wheel 6201. The rotating shaft 6202 passes through the rotating sleeve 6203 and is fixedly connected to the rotating grinding disc assembly. The rotating shaft 6202 is fixedly connected to the rotating sleeve 6203, and the rotating shaft 6202 is rotationally connected to the transmission mechanism 7.

[0039] Specifically, when the fluid flows into the sedimentation shell 6101 through the liquid inlet pipe 8, it first fills the sedimentation part 610, and then the impurities in the fluid cannot pass through the filter 6102. After the impurities pass through the tapered mouth 6103 and then reach the grinding part 620, the rotating shaft 6202 rotates to drive the rotating grinding disc assembly to rotate continuously, thereby achieving the grinding effect.

[0040] It is understandable that the sedimentation housing 6101 forms a large-volume buffer space, which prolongs the fluid residence time and promotes the sedimentation of impurities. The filter screen 6102 forms a secondary physical barrier below the liquid inlet 3, intercepting floating light impurities (such as grease films and foam balls), and achieving full coverage and retention of multiple types of impurities. The funnel-shaped conical mouth 6103 connects the bottom of the sedimentation housing 6101 with the grinding part 620, and uses the principles of fluid dynamics to gather the settled impurities to the center of the grinding area, avoiding the accumulation of impurities in the corners of the sedimentation chamber and causing failure. The rotating sleeve 6203 serves as the connecting hub between the rotating shaft 6202 and the grinding disc assembly, buffering the instantaneous impact load and maintaining a constant grinding disc gap to prevent foreign objects from getting stuck and causing overload shutdown. The filter screen 6102 is installed obliquely on the upper part of the sedimentation housing 6101, and uses the fluid flushing force to automatically peel off attached impurities. The washed impurities fall back to the conical mouth 6103 under the action of gravity, avoiding clogging of the filter screen and increasing flow resistance.

[0041] In some embodiments of this application, see Figure 4 As shown, the rotating grinding disc assembly includes a solar grinding disc 6204 and a planetary grinding disc 6205 . The solar grinding disc 6204 is fixedly connected to the rotating shaft 6202 . There are multiple planetary grinding discs 6205 , and the planetary grinding discs 6205 are engaged with the surface of the solar grinding disc 6204 .

[0042] In some embodiments of the present application, the grinding section 620 further includes a collection box 6206 , which is located below the grinding section 620 .

[0043] Specifically, the solar grinding disc 6204 drives the planetary grinding disc 6205 to rotate, and the ground impurities enter the collection box 6206, or enter the centrifugal pump with the fluid. At this time, the impurities can pass through the filter 6102, which shows that their volume is very small, so they will not cause blockage of the centrifugal pump.

[0044] It is understandable that based on the coordinated structure of the sedimentation section 610 and the grinding section 620, the anti-blocking mechanism 6 improves the accuracy and thoroughness of impurity separation. The large-volume buffer space formed by the sedimentation shell 6101 prolongs the fluid residence time and promotes the natural sedimentation of impurities, while the secondary physical barrier formed by the filter 6102 below the liquid inlet 3 can effectively intercept floating lightweight impurities and achieve full coverage and retention of multiple types of impurities. The conical mouth 6103 uses the principle of fluid dynamics to gather the settled impurities to the center of the grinding area, avoiding the accumulation of impurities in the corners of the sedimentation chamber and further enhancing the separation effect. The reliability and fineness of the grinding process are achieved through multiple mechanics. The meshing motion of the sun grinding disc 6204 and the planetary grinding disc 6205 in the rotating grinding disc assembly forms a composite grinding force field of radial shearing, axial rolling and centrifugal impact, which realizes the targeted crushing of impurities with different hardness and toughness. The planetary grinding disc 6205 is pressed against the inner wall of the stator grinding wheel 6201 by centrifugal force during its revolution, automatically maintaining the optimal grinding gap. When large particles enter, the grinding disc retreats to provide a buffer, and when processing fine particles, the gap shrinks to enhance grinding. This adaptive characteristic ensures continuous and stable grinding performance.

[0045] In some embodiments of the present application, the transmission mechanism 7 includes a driving gear 701, a driven gear 702, a transmission bracket 703 and a transmission belt 704. The driving gear 701 is sleeved on the driving shaft 501. The driving gear 701 and the driven gear 702 are connected to each other through the transmission belt 704. The rotating shaft 6202 passes through the driven gear 702 and is rotatably connected to the transmission bracket 703.

[0046] It is understandable that the base of the centrifugal pump is a hollow structure, with transmission brackets 703 fixedly connected on both sides of its inner wall. The transmission bracket 703 can be connected to the rotating shaft 6202 through bearings. The coaxial sleeve structure of the driving gear 701 and the drive shaft 501 ensures that the motor power is input with minimum angular deviation, avoiding additional bending moments caused by axis offset. The transmission belt 704 connects the driving gear 701 and the driven gear 702 to form a flexible transmission chain, which can absorb instantaneous impacts when the motor starts and stops or when the load suddenly changes, and suppresses the torque oscillation phenomenon common in rigid transmission. The rotating shaft 6202 passes through the driven gear 702 and forms a double-end support structure with the transmission bracket 703, which enhances the rigidity of the shaft system and prevents radial runout during the gear meshing process from affecting the concentricity of the crushing assembly. When the grinding part 620 encounters an unbreakable foreign object, the slippage of the transmission belt 704 can cut off the power transmission chain, avoiding serious faults such as gear tooth breakage or shaft system torsion damage. The cantilever support structure of the transmission bracket 703 for the rotating shaft 6202 decomposes the traditional single-point bearing load into a balanced system of gear meshing force and bracket support force, reducing the probability of early failure of the bearing point due to combined stress. The open transmission layout facilitates observation of the tension and wear of the transmission belt 704, enabling visual prediction of potential fault hazards. The transmission belt 704 maintains the linear transmission characteristics of speed and torque. The adjustable gear ratio of the driving gear 701 and the driven gear 702 allows the grinding section 620 to adapt to different speed requirements without changing the base speed of the motor, providing underlying support for the control of crushing particle size.

[0047] In the above embodiments, an anti-blocking horizontal centrifugal pump creates a front buffer and separation space through the setting of the sedimentation part 610. When the fluid containing solid impurities (such as flocs, particles or fibers) enters from the liquid inlet pipe 8, the larger or higher density impurities naturally sink to the bottom of the sedimentation part 610 due to gravity, and the relatively clean liquid enters the pump cavity from the liquid inlet 3 above the sedimentation part 610. The physical separation mechanism prevents the impurities from directly impacting and clogging the impeller mechanism 5 or the narrow flow channel in the pump, thereby ensuring the purity of the fluid in the core working area of ​​the pump. The grinding part 620 below the sedimentation part 610 is linked to the drive motor 1, and the impurities settled here are instantly crushed into fine particles by the high-speed rotating grinding part 620, which actively resolves the risk of sediment continuously accumulating and forming blockage at the inlet, making the sedimentation part 610 10 can continuously play a separation role without failing due to self-clogging. Based on the grinding part 620, the concept of "sedimentation tank" or "filter 6102" that requires shutdown for cleaning in traditional designs is transformed into an online, automatic impurity processing structure. Impurities are continuously crushed into fine particles that can pass through the impeller and pump body and are discharged with the fluid, eliminating the tedious operation requirements of regularly disassembling and cleaning the filter screen at the liquid inlet 3 or manually cleaning out sediments. By preventing larger, harder or entangled impurities from directly entering the impeller area, the possibility of key working parts such as the impeller blades 504 and the inner wall of the pump casing being impacted, worn, entangled or stuck is reduced. The impeller operates in a cleaner environment, and its mechanical integrity and hydraulic efficiency are maintained for a long time, so that the pump can operate more stably under the designed flow and head parameters, close to its optimal efficiency point.

[0048] Obviously, those skilled in the art may make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if such modifications and variations fall within the scope of the present invention's claims and their equivalents, the present invention is intended to encompass such modifications and variations.

Claims

1. A horizontal centrifugal pump with an anti-blocking function, characterized in that: include: A drive motor (1) and a centrifugal pump housing (2), wherein the centrifugal pump housing (2) is located on one side of the drive motor (1), and a liquid inlet (3) and a liquid outlet (4) are provided on both sides of the centrifugal pump housing (2). An impeller mechanism (5) is provided in the centrifugal pump housing (2), and the impeller mechanism (5) is fixedly connected to the output end of the drive motor (1). The liquid inlet (3) is fixedly connected to the liquid inlet pipeline (8), and an anti-blocking mechanism (6) is provided between the liquid inlet pipeline (8) and the liquid inlet (3). The blocking mechanism (6) comprises a settling portion (610) and a grinding portion (620), the two sides of the settling portion (610) being fixedly connected to the liquid inlet (3) and the liquid inlet pipeline (8), respectively, and the liquid inlet (3) and the liquid inlet pipeline (8) being located on both sides of the settling portion (610), and a grinding portion (620) being further provided on a side of the settling portion (610) close to the liquid inlet pipeline (8), and the grinding portion (620) being rotationally connected to the output end of the drive motor (1) via a transmission mechanism (7); The precipitation section (610) comprises a precipitation shell (6101), a filter screen (6102) and a tapered opening (6103); the upper portion of the precipitation shell (6101) is connected to the liquid inlet (3); the lower portion of the precipitation shell (6101) is connected to the liquid inlet pipeline (8); the filter screen (6102) is provided below the liquid inlet (3), and the filter screen (6102) is fixedly connected to the inner wall of the precipitation shell (6101); the tapered opening (6103) is provided below the liquid inlet pipeline (8), and the tapered opening (6103) is connected to the grinding section (620); The grinding portion (620) includes a grinding wheel (6201), a rotating shaft (6202), a rotating grinding disc assembly and a rotating sleeve (6203); the grinding wheel (6201) is fixedly connected to the sedimentation shell (6101); the rotating grinding disc assembly is arranged between the rotating sleeve (6203) and the grinding wheel (6201); the rotating shaft (6202) passes through the rotating sleeve (6203) and is fixedly connected to the rotating grinding disc assembly; the rotating shaft (6202) is fixedly connected to the rotating sleeve (6203), and the rotating shaft (6202) is rotatably connected to the transmission mechanism (7).

2. The anti-blocking horizontal centrifugal pump according to claim 1, characterized in that: The impeller mechanism (5) comprises a drive shaft (501), a coupling, a mechanical seal (502) and a parallel impeller portion, wherein the drive shaft (501) is fixedly connected to the output end of the drive motor (1), and the drive shaft (501) rotates coaxially with the drive motor (1), a coupling is provided on a side of the drive shaft (501) close to the drive motor (1), a mechanical seal (502) is provided at a connection between the drive shaft (501) and the centrifugal pump housing (2), and the parallel impeller portion is fixedly connected to an end of the drive shaft (501) away from the drive motor (1).

3. The anti-blocking horizontal centrifugal pump according to claim 2, characterized in that: The parallel impeller portion comprises a hub (503) and blades (504), the hub (503) being fixedly connected to the drive shaft (501), a plurality of blades (504) being provided on both sides of the hub (503), and a composite curved surface component being provided on a side of the hub (503) away from the drive shaft (501), the plurality of blades (504) rotating outwardly extending with the axis of the hub (503) as a starting point, and the plurality of blades (504) on both sides of the hub (503) being asymmetric.

4. The anti-blocking horizontal centrifugal pump according to claim 3, characterized in that: The composite curved surface assembly comprises a peak protrusion (505) arranged in the axial region of the hub (503), a recessed region (506) arranged around the axial region, and a guide ridge (507) arranged on the outer ring.

5. The anti-blocking horizontal centrifugal pump according to claim 4, characterized in that: The rotating grinding disc assembly includes a solar grinding disc (6204) and a planetary grinding disc (6205), wherein the solar grinding disc (6204) is fixedly connected to the rotating shaft (6202), a plurality of planetary grinding discs (6205) are provided, and the planetary grinding discs (6205) are engaged with the surface of the solar grinding disc (6204).

6. The anti-blocking horizontal centrifugal pump according to claim 5, characterized in that: The grinding section (620) further includes a collection box (6206), and the collection box (6206) is located below the grinding section (620).

7. The anti-blocking horizontal centrifugal pump according to claim 6, characterized in that: The transmission mechanism (7) comprises a driving gear (701), a driven gear (702), a transmission bracket (703) and a transmission belt (704); the driving gear (701) is sleeved on the driving shaft (501); the driving gear (701) and the driven gear (702) are connected to each other via the transmission belt (704); and the rotating shaft (6202) passes through the driven gear (702) and is rotationally connected to the transmission bracket (703).

Images