Horizontal sewage centrifugal pump

Abstract

The utility model discloses a horizontal sewage centrifugal pump relates to centrifugal pump technical field, including base and centrifugal pump, and the water inlet end pipe body of centrifugal pump is provided with filter drum, and the both ends cylinder of filter drum all are equipped with filter screen, and the circumferential outer wall of filter drum is provided with positioning hole, and the water inlet end pipe body outer wall of centrifugal pump is provided with positioning mechanism, and the bottom of base is provided with damping mechanism. The utility model under the action of positioning mechanism is convenient to realize to filter drum and dismounts, makes the impurity in the water body that enters to centrifugal pump through the water inlet end of centrifugal pump can be intercepted by filter screen, thereby helps to prolong the service life of centrifugal pump, through setting up damping mechanism below base, under the action of damping spring, utilize the elastic deformation of damping spring of both sides of limit stop, make centrifugal pump be in stable state, alleviate the unstable state of operation because of vibration, help to realize the stable operation of centrifugal pump.

Description

Technical Field

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

[0002] Centrifugal pumps are used in sewage treatment. A centrifugal pump is a pump that uses the centrifugal force generated by the rotation of an impeller to transport liquids, thereby pumping away sewage.

[0003] Chinese patent CN216241318U discloses a horizontal centrifugal pump for sewage treatment, which includes a platform, a base plate, and a centrifugal pump. Both ends of the platform are connected to baffles, and the bottom of the baffles is connected to the base plate. The centrifugal pump is connected to the top surface of the platform, and limit plates with an arc-shaped structure are connected to both sides of the top surface of the platform. This horizontal centrifugal pump for sewage treatment allows adjustment according to the different specifications of the centrifugal pump by moving the limit plates to one side. Then, the connecting plate is locked manually by screws, fixing the centrifugal pump to the inner wall of the limit plate. The material of the resistance block increases the resistance around the centrifugal pump, making it less likely for the centrifugal pump to detach when the platform is subjected to water flow.

[0004] However, the horizontal centrifugal pump disclosed in the aforementioned patent still has certain shortcomings in practical applications. Since centrifugal pumps generate vibration during operation, and the horizontal centrifugal pump disclosed in the aforementioned patent lacks a vibration damping mechanism, it is not conducive to achieving stable operation. Furthermore, the horizontal centrifugal pump disclosed in the aforementioned patent does not have any filtration structure, allowing impurities in the water drawn from the inlet to easily enter the pump body, thus affecting the pump's service life. Utility Model Content

[0005] The purpose of this utility model is to provide a horizontal sewage centrifugal pump to solve the problems mentioned in the background art, such as the lack of a shock absorption mechanism in existing horizontal centrifugal pumps, which is not conducive to the stable operation of the centrifugal pump, and the absence of any filtration structure, which makes it easy for impurities in the water drawn from the inlet end to enter the centrifugal pump body, thereby affecting the service life of the pump body.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a horizontal sewage centrifugal pump, including a base and a centrifugal pump fixed to the top wall of the base. A filter cylinder is installed inside the inlet pipe of the centrifugal pump, and filter screens are installed inside both ends of the filter cylinder. A positioning hole is opened on the outer circumference of the filter cylinder. A positioning mechanism is provided on the outer wall of the inlet pipe of the centrifugal pump for fixing the filter cylinder. A shock-absorbing mechanism is provided at the bottom of the base for shock absorption during the start-up and operation of the centrifugal pump.

[0007] Preferably, the positioning mechanism includes a positioning box, a dial, a positioning rod, a return spring, and a return plate. The positioning box is fixedly installed on the outer circumference of the inlet end pipe of the centrifugal pump. The top of the positioning rod movably penetrates the top wall of the inner cavity of the positioning box, and the bottom of the positioning rod movably penetrates the bottom wall of the inner cavity of the positioning box and the inlet end pipe wall of the centrifugal pump. The bottom of the positioning rod is movably inserted into the cavity of the positioning hole. The dial is fixedly installed on the top of the positioning rod. The return spring and the return plate are both located inside the positioning box. The return plate is fixedly sleeved on the surface of the positioning rod, and the return spring is located on the top of the return plate and sleeved on the surface of the positioning rod.

[0008] Preferably, the centrifugal pump has two symmetrically distributed guide grooves on the inner wall of the inlet pipe, and the filter cylinder has two symmetrically distributed guide columns fixed on its outer circumferential wall. The guide columns are adapted to and slidably connected to the guide grooves.

[0009] Preferably, the shock absorption mechanism includes a shock absorption seat and grooves. The shock absorption seat is located directly below the base, and the grooves are respectively opened at the four corners of the top wall of the shock absorption seat.

[0010] Preferably, the shock absorption mechanism further includes a connecting column, a shock absorber cylinder, and a movable rod. The shock absorber cylinders are respectively fixedly installed on both sides of the groove cavity. The two ends of the movable rod are respectively slidably connected to the cylinders of the shock absorber cylinders on both sides. The top end of the connecting column is fixedly connected to the bottom wall of the base, and the bottom end of the connecting column is fixedly sleeved on the surface of the middle part of the movable rod.

[0011] Preferably, the shock absorption mechanism further includes a limiting block and a shock absorption spring. The limiting block and the shock absorption spring are both disposed in the cylinder of the shock absorption cylinder, and the limiting block is fixedly installed at the end of the movable rod. The shock absorption springs are respectively disposed on both sides of the limiting block.

[0012] Compared with the prior art, the beneficial effects of this utility model are: This invention features a filter cylinder with a filter screen installed inside the inlet pipe of a centrifugal pump. A positioning hole is provided on the surface of the filter cylinder, facilitating its installation and removal via a positioning mechanism. To install the filter cylinder, the positioning rod is first pulled up using a lever, causing the reset plate to compress the reset spring, temporarily removing the positioning rod from the inlet pipe. The guide post on the filter cylinder is then aligned with the guide groove and inserted into the inlet pipe. The lever is then released, and the positioning rod automatically descends and inserts into the positioning hole under the action of the reset spring and reset plate, thus securing the filter cylinder. This allows impurities in the water entering the centrifugal pump through the inlet to be intercepted by the filter screen, extending the pump's lifespan. When the filter cylinder needs to be removed for cleaning, the positioning rod is pulled up again using the lever to remove it from the positioning hole, making the process very convenient. By installing a shock-absorbing mechanism under the base, the moving rod moves within the two shock-absorbing cylinders when the centrifugal pump vibrates during operation. This displacement causes the limit block to move, resulting in elastic deformation of the shock-absorbing spring. The elastic deformation of the shock-absorbing springs on both sides of the limit block allows the moving rod to remain in a stable state. Consequently, the centrifugal pump remains stable under the action of the connecting column, reducing operational instability caused by vibration and contributing to the stable operation of the centrifugal pump. Attached Figure Description

[0013] Figure 1 This is a first-view structural schematic diagram of the horizontal sewage centrifugal pump of this utility model. Figure 2 This utility model Figure 1 Enlarged structural diagram at point A; Figure 3 This is a schematic diagram of the cross-sectional structure of the shock-absorbing cylinder of the horizontal sewage centrifugal pump of this utility model; Figure 4 This is a schematic diagram of the filter cylinder structure of the horizontal sewage centrifugal pump of this utility model.

[0014] In the diagram: 1. Base; 2. Centrifugal pump; 3. Vibration damper; 4. Groove; 5. Connecting column; 6. Vibration damper cylinder; 7. Movable rod; 8. Guide groove; 9. Filter cylinder; 10. Filter screen; 11. Guide column; 12. Positioning box; 13. Dial head; 14. Positioning rod; 15. Return spring; 16. Return plate; 17. Limit block; 18. Vibration damper spring; 19. Positioning hole. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 This utility model provides a technical solution: a horizontal sewage centrifugal pump, including a base 1 and a centrifugal pump 2 welded to the top wall of the base 1. A filter cylinder 9 is installed in the inlet end pipe of the centrifugal pump 2. Filter screens 10 are installed in the left and right end cylinders of the filter cylinder 9. Positioning holes 19 are opened on the outer circumference of the filter cylinder 9. A positioning mechanism is provided on the outer wall of the inlet end pipe of the centrifugal pump 2 for fixing the filter cylinder 9. A shock-absorbing mechanism is provided at the bottom of the base 1 for shock absorption when the centrifugal pump 2 is started.

[0017] The positioning mechanism includes a positioning box 12, a dial 13, a positioning rod 14, a return spring 15, and a return plate 16. The positioning box 12 is welded to the outer circumference of the inlet pipe of the centrifugal pump 2. The top of the positioning rod 14 extends through the top wall of the inner cavity of the positioning box 12, and the bottom of the positioning rod 14 extends through the bottom wall of the inner cavity of the positioning box 12 and the inlet pipe wall of the centrifugal pump 2. The bottom of the positioning rod 14 is inserted into the cavity of the positioning hole 19. The dial 13 is welded to the top of the rod of the positioning rod 14. The return spring 15 and the return plate 16 are both located inside the positioning box 12. The return plate 16 is welded and sleeved on the surface of the positioning rod 14, and the return spring 15 is located on the top of the return plate 16 and sleeved on the surface of the positioning rod 14. The purpose of this is to allow the positioning rod 14 to automatically return to its original position. Two symmetrically distributed guide grooves 8 are formed on the inner wall of the inlet pipe of the centrifugal pump 2, and two symmetrically distributed guide posts 11 are welded... On the outer circumference of the filter cartridge 9, the guide post 11 and the guide groove 8 are adapted and slidably connected to each other to facilitate the installation of the filter cartridge 9. The damping mechanism includes a damping seat 3 and a groove 4. The damping seat 3 is located directly below the base 1. The groove 4 is opened at the four corners of the top wall of the damping seat 3. The damping mechanism also includes a connecting post 5, a damping cylinder 6, and a movable rod 7. The damping cylinder 6 is fixedly installed on the front and rear side walls of the groove cavity of the groove 4 by bolts. The front and rear ends of the movable rod 7 are slidably connected to the cylinders of the damping cylinders 6 on the front and rear sides. The top end of the connecting post 5 is welded to the bottom wall of the base 1. The bottom end of the connecting post 5 is welded and sleeved on the middle rod surface of the movable rod 7. The damping mechanism also includes a limiting block 17 and a damping spring 18. The limiting block 17 and the damping spring 18 are both located in the cylinder of the damping cylinder 6. The limiting block 17 is welded to the end of the rod of the movable rod 7. The damping spring 18 is located on both sides of the limiting block 17.

[0018] Working principle: A filter cylinder 9 with a filter screen 10 is installed in the inlet pipe of the centrifugal pump 2, and a positioning hole 19 is opened on the surface of the filter cylinder 9. The positioning mechanism facilitates the installation and removal of the filter cylinder 9. When the filter cylinder 9 needs to be installed, the positioning rod 14 can be pulled up by the dial 13, so that the reset plate 16 squeezes the reset spring 15, so that the positioning rod 14 is temporarily pulled out from the inlet pipe of the centrifugal pump 2. The guide post 11 on the surface of the filter cylinder 9 is aligned with the guide groove 8 and inserted into the inlet pipe of the centrifugal pump 2. Then, release the dial 13. Under the action of the return spring 15 and the return plate 16, the positioning rod 14 will automatically descend and insert into the positioning hole 19, thereby installing and fixing the filter cylinder 9. This allows impurities in the water entering the centrifugal pump 2 through the inlet end to be intercepted by the filter screen 10, thus helping to extend the service life of the centrifugal pump 2. When it is necessary to disassemble the filter cylinder 9 to clean the filter screen 10 inside, simply pull up the positioning rod 14 again through the dial 13 to pull it out of the positioning hole 19, and the filter cylinder 9 can be taken out, which is very convenient. By setting a shock-absorbing mechanism under the base 1, under the action of the shock-absorbing spring 18, when the centrifugal pump 2 vibrates during operation, the movable rod 7 will move within the two shock-absorbing cylinders 6, causing the limiting block 17 to move. This causes the shock-absorbing spring 18 to undergo elastic deformation. By utilizing the elastic deformation of the shock-absorbing spring 18 on both sides of the limiting block 17, the movable rod 7 can be kept in a stable state. In turn, under the action of the connecting column 5, the centrifugal pump 2 is kept in a stable state, reducing the unstable operation caused by vibration and helping to achieve stable operation of the centrifugal pump 2.

[0019] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0020] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A horizontal sewage centrifugal pump, comprising a base (1) and a centrifugal pump (2) fixed to the top wall of the base (1), characterized in that: The centrifugal pump (2) has a filter cylinder (9) installed inside the inlet end pipe. Both ends of the filter cylinder (9) are equipped with filter screens (10). The outer circumferential wall of the filter cylinder (9) is provided with positioning holes (19). The outer wall of the inlet end pipe of the centrifugal pump (2) is provided with a positioning mechanism for fixing the filter cylinder (9). The bottom of the base (1) is provided with a shock-absorbing mechanism for shock absorption when the centrifugal pump (2) is started and running. The positioning mechanism includes a positioning box (12), a dial (13), a positioning rod (14), a return spring (15), and a return plate (16). The positioning box (12) is fixedly installed on the outer circumference of the inlet end pipe of the centrifugal pump (2). The top of the positioning rod (14) moves through the top wall of the inner cavity of the positioning box (12), and the bottom of the positioning rod (14) moves through the bottom wall of the inner cavity of the positioning box (12) and the inlet end pipe wall of the centrifugal pump (2). The bottom end of the positioning rod (14) is movably inserted into the cavity of the positioning hole (19). The dial (13) is fixedly installed on the top end of the positioning rod (14). The reset spring (15) and the reset plate (16) are both located inside the positioning box (12). The reset plate (16) is fixedly sleeved on the surface of the positioning rod (14). The reset spring (15) is located on the top of the reset plate (16) and sleeved on the surface of the positioning rod (14).

2. The horizontal sewage centrifugal pump according to claim 1, characterized in that: The centrifugal pump (2) has two symmetrically distributed guide grooves (8) on the inner wall of the inlet end pipe, and the filter cylinder (9) has two symmetrically distributed guide columns (11) fixed on the outer wall of the circumference. The guide columns (11) are adapted to and slidably connected with the guide grooves (8).

3. The horizontal sewage centrifugal pump according to claim 2, characterized in that: The shock absorption mechanism includes a shock absorption seat (3) and a groove (4). The shock absorption seat (3) is located directly below the base (1), and the grooves (4) are respectively opened at the four corners of the top wall of the shock absorption seat (3).

4. The horizontal sewage centrifugal pump according to claim 3, characterized in that: The shock absorption mechanism also includes a connecting column (5), a shock absorber cylinder (6), and a movable rod (7). The shock absorber cylinder (6) is fixedly installed on both sides of the groove cavity of the groove (4). The two ends of the movable rod (7) are slidably connected to the cylinders of the shock absorber cylinder (6) on both sides. The top end of the connecting column (5) is fixedly connected to the bottom wall of the base (1). The bottom end of the connecting column (5) is fixedly sleeved on the surface of the middle rod of the movable rod (7).

5. The horizontal sewage centrifugal pump according to claim 4, characterized in that: The shock absorption mechanism also includes a limiting block (17) and a shock absorption spring (18). The limiting block (17) and the shock absorption spring (18) are both located in the cylinder of the shock absorption cylinder (6). The limiting block (17) is fixedly installed at the end of the rod of the movable rod (7). The shock absorption spring (18) is located on both sides of the limiting block (17).

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