Horizontal multistage centrifugal pump

Abstract

This utility model discloses a horizontal multistage centrifugal pump, including a pump body. An input pipe is provided at one end of the upper side wall of the pump body, and an output pipe is provided at the other end. A filter box is provided at the upper end of the input pipe. Multiple sets of symmetrically distributed slide rails are provided inside the filter box. Sliding strips are provided on the slide rails and adapted to and slidably connected to them. A filter plate is provided between two slide strips. The filter plate is adapted to and slidably connected to the filter box. The filter holes on the filter plate are distributed from large to small. A handle is provided on the front side wall of the filter plate. An installation pipe is provided at the upper end of both the output pipe and the filter plate. A sealing component is provided inside the installation pipe. A heat dissipation component is provided on one side of the centrifugal pump. This design enables graded filtration of impurities in the pumped fluid, maintaining a good sealing effect, preventing media waste and safety hazards caused by fluid leakage, avoiding energy waste caused by ineffective heat dissipation, and significantly improving heat dissipation efficiency.

Description

Technical Field

[0001] This utility model relates to the field of centrifugal pump technology, and more specifically, to a horizontal multistage centrifugal pump. Background Technology

[0002] Existing horizontal multistage centrifugal pumps, with their multistage pressurization advantage, are widely used in high-pressure fluid transportation scenarios such as industrial water supply, petrochemicals, and mine drainage. Their operational stability and ease of maintenance directly affect production efficiency. However, in long-term practical applications, existing horizontal multistage centrifugal pumps have gradually revealed many structural design defects, making them difficult to adapt to complex working conditions.

[0003] Existing equipment often lacks a targeted pre-filtration structure or uses only a fixed filter component with a single aperture. When conveying fluid containing impurities, these impurities can easily enter the pump body, causing wear on core components such as impellers and guide vanes, thus shortening the equipment's service life. Single-aperture filtration not only has limited filtration efficiency but also requires disassembling the pipeline and replacing the filter component after clogging, which is cumbersome and affects continuous production.

[0004] Existing pipe seals mostly use fixed sealing ring structures, lacking elastic compensation mechanisms. After long-term operation, the sealing ring is prone to gaps due to wear or temperature changes, leading to high-pressure fluid leakage, which not only wastes the medium but also poses safety hazards.

[0005] In addition, the natural heat dissipation efficiency is low, and heat is easily accumulated inside the pump body under high pressure conditions, which affects the performance of components and aggravates component wear. Utility Model Content

[0006] (a) Technical problems to be solved To address the problems existing in the prior art, this utility model provides a horizontal multistage centrifugal pump to solve the technical problems mentioned in the background art, such as the lack of a targeted pre-filtration structure and the lack of a flexible compensation mechanism in the prior art.

[0007] (II) Technical Solution To achieve the above objectives, this utility model provides the following technical solution: A horizontal multistage centrifugal pump includes a pump body. An input pipe is located at one end of the upper sidewall of the pump body, and an output pipe is located at the other end. A filter box is located at the upper end of the input pipe. Multiple sets of symmetrically distributed slide rails are arranged inside the filter box. Sliding strips are fitted and slidably connected to each slide rail. A filter plate is arranged between two slide strips. The filter plate is fitted and slidably connected to the filter box. The filter holes on the filter plate are distributed from large to small. A handle is located on the front sidewall of the filter plate. Mounting pipes are located at the upper ends of both the output pipe and the filter plate. A sealing assembly is located inside the mounting pipe. A heat dissipation assembly is located on one side of the centrifugal pump.

[0008] The present invention is further configured such that the sealing assembly includes a spring and a sealing ring, a groove is provided inside the mounting tube, multiple springs are evenly distributed in the groove, the sealing ring is at one end of the spring, and the sealing ring is in contact with and slidably connected to the inner sidewall of the groove, so that the sealing ring is always in contact with the sealing surface, compensating for gaps caused by wear or temperature changes, improving sealing reliability, and preventing fluid leakage.

[0009] The present invention is further configured such that the heat dissipation assembly includes a protective box, an electromagnetic slide, an electromagnetic block, and a sealing plate. A heat dissipation port is provided on one side wall of the pump body. The protective box is symmetrically arranged on both sides of the heat dissipation port. The electromagnetic slide passes through the corresponding protective box. The electromagnetic block is on the electromagnetic slide and is electromagnetically slidably connected to it. The sealing plate is between the two electromagnetic blocks. The sealing plate is adapted to and slidably connected to the heat dissipation port. The heat dissipation port can be flexibly opened and closed according to the pump body temperature to adapt to different heat dissipation requirements.

[0010] The present invention is further provided with an installation plate at the upper end of the installation pipe, and the installation plate is provided with multiple sets of evenly distributed installation holes, which facilitates the precise fixing of the pump body to the pipeline or other components, and improves the ease of installation and connection stability.

[0011] The present invention is further configured such that an auxiliary hole is provided on the side wall of the pump body, and the auxiliary hole and the heat dissipation hole are in convection to form an air convection channel, which accelerates the dissipation of heat inside the pump body and improves the heat dissipation efficiency.

[0012] The present invention is further provided that the edge of the sealing plate is provided with a silicone sealing strip, and the sealing strip is bonded to the sealing plate with adhesive to enhance the sealing performance between the sealing plate and the heat dissipation port.

[0013] The present invention is further provided that a dustproof screen is provided inside the auxiliary hole to filter the air entering the convection channel and block dust and impurities.

[0014] (III) Beneficial Effects Compared with the prior art, this utility model provides a horizontal multistage centrifugal pump, which has the following beneficial effects: 1. With the cooperation of the slide rail and slide bar, users can easily pull out the filter plate for cleaning or replacement using the handle without disassembling the pipeline, which greatly improves the convenience of maintenance. The filter plate adopts a gradient distribution design of filter holes from large to small, which can filter impurities in the conveyed fluid in stages. It first intercepts large particles of impurities and then filters fine impurities, effectively preventing impurities from entering the pump body and wearing the impeller, guide vanes and other core components, reducing the probability of equipment failure.

[0015] 2. Multiple sets of springs are evenly distributed in the groove inside the installation pipe. The springs apply stable and uniform elastic pressure to the sealing ring, so that the sealing ring always fits tightly against the sealing surface. When the sealing ring wears due to long-term use or deforms due to temperature changes, the elastic expansion and contraction of the spring can compensate for the sealing gap in time, always maintaining a good sealing effect and preventing media waste and safety hazards caused by fluid leakage.

[0016] 3. The protective box provides effective protection for the electromagnetic slide and electromagnetic block. The electromagnetic block drives the sealing plate to slide flexibly along the electromagnetic slide. The opening and closing degree of the heat dissipation port can be precisely controlled according to the pump body temperature to adapt to the heat dissipation requirements under different working conditions and avoid energy waste caused by ineffective heat dissipation. At the same time, the auxiliary holes on the side wall of the pump body and the heat dissipation port form a convection channel, which greatly accelerates the exchange of hot air inside the pump body and cold air outside, and significantly improves the heat dissipation efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the horizontal multistage centrifugal pump of this utility model. Figure 1 ; Figure 2 This is a schematic diagram of the overall structure of the horizontal multistage centrifugal pump of this utility model. Figure 2 ; Figure 3 This is a schematic diagram of the overall structure of the horizontal multistage centrifugal pump of this utility model. Figure 3 ; Figure 4 This is a schematic diagram of the internal cross-section of the horizontal multistage centrifugal pump protection box of this utility model; Figure 5 This is an exploded view of the sealing assembly of the horizontal multistage centrifugal pump in this utility model.

[0018] In the diagram: 1. Pump body; 2. Inlet pipe; 3. Outlet pipe; 4. Filter box; 5. Slide rail; 6. Slide bar; 7. Filter plate; 8. Handle; 9. Mounting pipe; 10. Spring; 11. Sealing ring; 12. Protective box; 13. Electromagnetic slide; 14. Electromagnetic block; 15. Sealing plate; 16. Mounting plate; 17. Mounting hole; 18. Auxiliary hole. Detailed Implementation

[0019] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0020] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0021] 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.

[0022] Please see Figure 1-5 A horizontal multistage centrifugal pump includes a pump body 1. An input pipe 2 is provided at one end of the upper sidewall of the pump body 1, and an output pipe 3 is provided at the other end. A filter box 4 is provided at the upper end of the input pipe 2. Multiple sets of symmetrically distributed slide rails 5 are provided inside the filter box 4. Slide strips 6 are provided on the slide rails 5 and are adapted to and slidably connected to them. A filter plate 7 is provided between two slide strips 6. The filter plate 7 is adapted to and slidably connected to the filter box 4. The filter holes on the filter plate 7 are distributed from large to small. A handle 8 is provided on the front sidewall of the filter plate 7. An installation pipe 9 is provided at the upper end of both the output pipe 3 and the filter plate 7. A sealing assembly is provided inside the installation pipe 9. A heat dissipation assembly is provided on one side of the centrifugal pump.

[0023] The sealing assembly includes a spring 10 and a sealing ring 11. A groove is provided inside the mounting tube 9. Multiple springs 10 are evenly distributed in the groove. The sealing ring 11 is located at one end of the spring 10 and is in contact with and slidably connected to the inner sidewall of the groove.

[0024] The upper end of the mounting tube 9 is provided with a mounting plate 16, and the mounting plate 16 is provided with a plurality of evenly distributed mounting holes 17.

[0025] In this embodiment, firstly, the user fixes the pump body 1 to the external pipeline or equipment through the mounting plate 16 at the upper end of the mounting pipe 9 and the evenly distributed mounting holes 17. During the installation process, multiple sets of springs 10 in the groove apply force to the sealing ring 11, so that the sealing ring 11 fits tightly against the connection part, forming an initial sealing foundation. Subsequently, before starting the pump body 1, check whether the filter plate 7 in the filter box 4 is installed in place. The filter plate 7 slides and engages with the slide rail 5 in the filter box 4 through the slide bar 6, ensuring that it is stably placed in the filter box 4, and the filter holes are distributed in a gradient from large to small to complete the preparation for graded filtration of the fluid.

[0026] More specifically, after the pump body 1 is started, the fluid to be transported enters the filter box 4 through the input pipe 2. It first passes through the area of ​​the filter plate 7 with larger filter holes, which intercepts large particles of impurities in the fluid. Then it flows through the area with smaller filter holes, which further filters fine impurities. The clean fluid after staged filtration enters the pump body 1 and is pressurized by the action of multi-stage impellers. Finally, it is discharged from the output pipe 3. During this process, the sealing components work continuously. The spring 10 always applies a uniform elastic force to the sealing ring 11. Even if the sealing ring 11 is slightly worn or deformed due to temperature changes, the elastic compensation of the spring 10 can ensure a tight fit of the sealing surface and effectively prevent fluid leakage. If the filter plate 7 needs to be cleaned or replaced, it can be pulled out along the slide rail 5 by the handle 8 after the machine is stopped. The operation is convenient and does not require disassembling the pipeline. When it is necessary to adjust the connection between the pump body 1 and the external equipment, the multiple sets of mounting holes 17 on the mounting plate 16 can flexibly adapt to different connection requirements to ensure a stable connection.

[0027] Please see Figures 1-5 As one embodiment of the heat dissipation component: the heat dissipation component includes a protective box 12, an electromagnetic slide 13, an electromagnetic block 14, and a sealing plate 15. A heat dissipation port is provided on one side wall of the pump body 1. The protective box 12 is symmetrically arranged on both sides of the heat dissipation port. The electromagnetic slide 13 passes through the corresponding protective box 12. The electromagnetic block 14 is on the electromagnetic slide 13 and is electromagnetically slidably connected to it. The sealing plate 15 is between the two electromagnetic blocks 14. The sealing plate 15 is adapted to and slidably connected to the heat dissipation port. An auxiliary hole 18 is provided on the side wall of the pump body 1. The auxiliary hole 18 is in convection with the heat dissipation port.

[0028] Specifically, when the pump body 1 is running, if the internal temperature rises and heat dissipation is required, the electromagnetic slide rail 13 is energized and starts, driving the electromagnetic block 14 on it to slide along the slide rail 5. The electromagnetic block 14 synchronously drives the connected sealing plate 15 to move, so that the sealing plate 15 slides open from the heat dissipation port, exposing the heat dissipation port to release the heat inside the pump body 1. During this process, the protective boxes 12 on both sides protect the electromagnetic slide rail 13 and the electromagnetic block 14 to prevent them from being affected by external dust, collisions, etc. If the temperature of the pump body 1 drops to a suitable range and continuous heat dissipation is not required, the electromagnetic slide rail 13 drives the electromagnetic block 14 to slide in the opposite direction, and the sealing plate 15 returns to its original position with the electromagnetic block 14 and fits tightly against the heat dissipation port, closing the heat dissipation port.

[0029] Please see Figures 1-5 As one embodiment of the sealing strip: a silicone sealing strip is provided on the edge of the sealing plate 15, and the sealing strip is bonded to the sealing plate 15 with adhesive.

[0030] Specifically, the edge of the sealing plate 15 is tightly fitted with a silicone sealing strip bonded with adhesive to the edge of the heat dissipation vent, thereby enhancing the sealing performance.

[0031] Please see Figures 1-5 As one implementation of the dustproof net: a dustproof net is provided inside the auxiliary hole 18.

[0032] Specifically, outside cold air enters through the auxiliary hole 18 on the side wall of the pump body 1. The dustproof screen inside the auxiliary hole 18 filters the incoming cold air, preventing dust and impurities in the air from entering the pump body 1.

[0033] In summary, when using the overall equipment: First, the pump body 1 is fixed to the mounting plate 16 of the upper mounting pipe 9 of the input pipe 2 via the output pipe 3. Using the evenly distributed mounting holes 17 on the mounting plate 16, the pump body 1 is precisely connected to the external pipeline or equipment with bolts and other connecting parts.

[0034] During the connection process, the sealing components inside the mounting tube 9 work synchronously. Multiple sets of evenly distributed springs 10 in the groove apply a stable elastic force to the sealing ring 11, so that the sealing ring 11 fits tightly against the sealing surface of the connection part, forming an initial seal and preventing fluid leakage.

[0035] When the pump body 1 is started, the fluid to be transported enters the filter box 4 through the input pipe 2. It first flows through the area with larger filter holes to intercept large particles of impurities in the fluid, and then passes through the area with smaller filter holes to filter fine impurities. The clean fluid after multi-stage filtration enters the pump body 1. Through the step-by-step pressurization effect of multi-stage impellers, it is finally discharged from the output pipe 3. Throughout the process, impurities are prevented from entering the pump body 1 and causing wear to the core components.

[0036] During the operation of pump body 1, when the temperature of pump body 1 rises and heat dissipation is required, electromagnetic slide rail 13 is energized to drive electromagnetic block 14 to slide along slide rail 5, which drives sealing plate 15 to move away from heat dissipation port. At this time, auxiliary hole 18 on the side wall of pump body 1 forms a convection channel with heat dissipation port. Outside cold air enters pump body 1 after being filtered by dustproof net in auxiliary hole 18, and exchanges with internal hot air through heat dissipation port to accelerate heat dissipation.

[0037] The protective boxes 12 on both sides of the heat dissipation port protect the electromagnetic slide 13 and electromagnetic block 14 from external impurities or collisions. When the temperature of the pump body 1 drops to a suitable range, the electromagnetic slide 13 drives the electromagnetic block 14 to slide in the opposite direction, the sealing plate 15 resets and fits with the heat dissipation port, and the silicone sealing strip on its edge is glued to the edge of the heat dissipation port to enhance the sealing performance and prevent dust and impurities from entering. At the same time, the dustproof net of the auxiliary hole 18 continuously blocks external impurities to ensure the cleanliness of the inside of the pump body 1.

[0038] If maintenance is required, the filter plate 7 can be pulled out along the slide rail 5 through the handle 8 on the side wall of the filter plate 7 after the machine is stopped for cleaning or replacement. The operation does not require disassembling the pipeline, which is convenient and efficient. During the entire working process, the filtration, sealing and heat dissipation structures work together to ensure the cleanliness, sealing and heat dissipation efficiency of the fluid, while simplifying the installation and maintenance process and ensuring the long-term stable operation of the pump body 1.

[0039] In all the solutions mentioned above, the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although the embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents. In all the solutions mentioned above, the operation of electrical components is controlled by a controller. Since the devices matched with the controllers are common devices, their control principles and circuit connections are existing, well-known, and mature technologies. Therefore, their electrical connection relationships and specific circuit structures will not be elaborated here.

Claims

1. A horizontal multi-stage centrifugal pump comprising a pump body (1), characterized in that: The pump body (1) has an input pipe (2) at one end of its upper sidewall and an output pipe (3) at the other end. A filter box (4) is provided at the upper end of the input pipe (2). Multiple sets of symmetrically distributed slide rails (5) are provided inside the filter box (4). Slide rails (6) are provided on the slide rails (5) and are adapted to and slidably connected to them. A filter plate (7) is provided between two slide rails (6). The filter plate (7) is adapted to and slidably connected to the filter box (4). The filter holes on the filter plate (7) are distributed from large to small. A handle (8) is provided on the front sidewall of the filter plate (7). An installation pipe (9) is provided at the upper end of both the output pipe (3) and the filter plate (7). A sealing component is provided inside the installation pipe (9). A heat dissipation component is provided on one side of the centrifugal pump.

2. A horizontal multi-stage centrifugal pump according to claim 1, characterized in that: The sealing assembly includes a spring (10) and a sealing ring (11). The mounting tube (9) has a groove. Multiple springs (10) are evenly distributed in the groove. The sealing ring (11) is at one end of the spring (10). The sealing ring (11) is in contact with and slidably connected to the inner wall of the groove.

3. A horizontal multi-stage centrifugal pump according to claim 1, characterized in that: The heat dissipation assembly includes a protective box (12), an electromagnetic slide (13), an electromagnetic block (14), and a sealing plate (15). A heat dissipation port is provided on one side wall of the pump body (1). The protective box (12) is symmetrically arranged on both sides of the heat dissipation port. The electromagnetic slide (13) passes through the corresponding protective box (12). The electromagnetic block (14) is on the electromagnetic slide (13) and is electromagnetically slidably connected to it. The sealing plate (15) is between the two electromagnetic blocks (14). The sealing plate (15) is adapted to the heat dissipation port and is slidably connected.

4. A horizontal multi-stage centrifugal pump according to claim 1, characterized in that: The upper end of the mounting tube (9) is provided with a mounting plate (16), and the mounting plate (16) is provided with a plurality of evenly distributed mounting holes (17).

5. A horizontal multistage centrifugal pump according to claim 3, characterized in that: The pump body (1) has an auxiliary hole (18) on its side wall, and the auxiliary hole (18) is in convection with the heat dissipation hole.

6. A horizontal multi-stage centrifugal pump according to claim 3, characterized in that: The edge of the sealing plate (15) is provided with a silicone sealing strip, which is bonded to the sealing plate (15) with adhesive.

7. A horizontal multi-stage centrifugal pump according to claim 5, characterized in that: A dustproof net is provided inside the auxiliary hole (18).

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