Vertical pipeline type centrifugal pump

Abstract

The utility model particularly relates to a vertical pipeline type centrifugal pump which comprises a frame body, a pump shell is arranged at the upper end of the frame body, a motor is fixed in the frame body, an impeller fixedly connected with an output shaft at the upper end of the motor is installed in the pump shell in a rotating mode, a liquid outlet pipe is fixed at the outer end of the pump shell, and a sealing plate is fixed on the upper end face of the pump shell. A filter frame is fixed to the outer end of the sealing plate through a guide pipe, a liquid inlet pipe is fixed to the outer end of the filter frame, a partition plate is fixed in the filter frame, a plurality of filter screens matched with one another are fixed to the inner end face of the partition plate at equal angles, and blow-off pipes matched with the filter screens are rotationally installed in the filter frame; the periphery of the sealing plate is fixedly connected with the upper end of the pump shell through a threaded plate, the lower end of the guide pipe is fixedly connected with the lower end of the periphery of the pump shell through a threaded rod, the blow-off pipe is arranged in an S shape, and the rotary connecting position of the blow-off pipe and the filter frame and the centers of the filter screens are located on the same axis.

Description

Technical Field

[0001] The utility model relates to the technical field related to centrifugal pumps, in particular to a vertical pipeline centrifugal pump. Background Art

[0002] A centrifugal pump works by rotating the impeller to cause water to move centrifugally. Before starting the water pump, the pump casing and the water suction pipe must be filled with water, and then the motor is started so that the pump shaft drives the impeller and water to rotate at high speed. The water moves centrifugally and is thrown to the outer edge of the impeller, flowing into the water pressure pipeline of the water pump through the flow channel of the volute pump casing. The prior art has the following problems: In a vertical pipeline centrifugal pump disclosed in the prior art, it is necessary to remove the pipe at the water inlet pipe in order to clean the filter screen when using it, which wastes human resources and has high use costs. In addition, the impeller in the pump body cannot be repaired in a timely and convenient manner during use, which affects the centrifugal effect and reduces the quality of use.

[0003] The patent document with publication number CN218177482U in the prior art provides a vertical pipeline centrifugal pump; the device can push the movable rod to hit the filter screen plate by setting a filter screen cleaning component, so that the impurities on the surface of the filter screen plate fall into the installation box for collection, thereby ensuring the convenience of cleaning the filter screen plate, saving human resources, and improving the cleaning efficiency. At the same time, the impurities can be discharged through the sewage pipe without disassembling the pipeline, thereby improving the convenience of equipment use and reducing the cleaning cost;

[0004] Although the device has many beneficial effects, the following problems still exist: the device hits the filter screen by pushing the movable rod, and the impurities on the surface of the filter screen fall into the installation box for collection. The movable rod is required to hit various parts of the end surface of the filter screen. Obviously, this will not only increase the time and physical consumption of the staff, but also make it difficult to ensure the cleaning effect of the filter screen. For this reason, we propose a vertical pipeline centrifugal pump. Utility Model Content

[0005] The utility model aims to provide a vertical pipeline centrifugal pump to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a vertical pipeline centrifugal pump, comprising a frame, a pump casing is arranged at the upper end of the frame, a motor is fixed in the frame, an impeller fixedly connected to the output shaft at the upper end of the motor is rotatably installed in the pump casing, a liquid outlet pipe is fixed at the outer end of the pump casing, a sealing plate is fixed on the upper end surface of the pump casing, a filter frame is fixed to the outer end of the sealing plate through a conduit, a liquid inlet pipe is fixed to the outer end of the filter frame, a partition is fixed in the filter frame, a plurality of mutually matching filter screens are fixed at equal angles on the inner end surface of the partition, and a sewage pipe matching the filter screen is rotatably installed in the filter frame.

[0007] Preferably, the periphery of the sealing plate is fixedly connected to the upper end of the pump casing via a threaded plate, and the lower end of the conduit is fixedly connected to the lower end of the periphery of the pump casing via a screw.

[0008] Preferably, the sewage pipe is arranged in an S shape, and the rotation connection between the sewage pipe and the filter frame and the centers of the multiple filter screens are located on the same axis.

[0009] Preferably, a mounting plate is fixed to the upper end surface of the motor via the output shaft, a limiting plug rod is fixed to the upper end surface of the mounting plate, and a limiting plug sleeve is fixed to the middle part of the impeller.

[0010] Preferably, the limiting plug rod is arranged in an arc shape, a threaded block is fixed in the middle of the limiting plug sleeve, the threaded block is inserted and installed in the limiting plug rod, and a threaded rod which cooperates with the thread of the threaded block is rotatably installed on the upper end surface of the mounting plate.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] This vertical pipeline centrifugal pump rotates the sewage pipe to make it fit with each filter screen, and changes the pressure difference on both sides of the filter screen, so that the filter screen and impurities can be pushed into the sewage pipe, and the impurities can be discharged through the sewage pipe. In this way, the effect of cleaning impurities is achieved. Compared with the original device, this device can save the time and physical strength of the staff and can also significantly improve the cleaning effect of impurities.

[0013] The vertical pipeline centrifugal pump can install and disassemble the impeller in the pump casing through the plug-in cooperation between the limiting plug sleeve and the limiting plug rod, so as to facilitate the inspection and replacement of the impeller. The impeller can be positioned through the threaded cooperation between the threaded rod and the threaded block to prevent the impeller from loosening. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall external structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the overall internal structure of the utility model;

[0016] Figure 3 It is a schematic diagram of the internal structure of the frame and pump casing of the utility model;

[0017] Figure 4 This is a schematic diagram of the internal structure of the impeller of the utility model;

[0018] Figure 5 This is a schematic diagram of the internal split structure of the impeller of the utility model;

[0019] Figure 6It is a schematic diagram of the internal structure of the filter frame of the utility model.

[0020] In the figure:

[0021] 1. Frame; 11. Pump casing; 12. Motor; 13. Impeller; 14. Liquid outlet pipe; 15. Sealing plate; 16. Conduit;

[0022] 2. Mounting plate; 21. Limiting rod; 22. Limiting sleeve; 23. Threaded block; 24. Threaded rod;

[0023] 3. Filter frame; 31. Liquid inlet pipe; 32. Partition; 33. Filter net; 34. Drain pipe. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-6 The utility model provides a technical solution: a vertical pipeline centrifugal pump, including a frame 1, a pump casing 11 is arranged on the upper end of the frame 1, a motor 12 is fixed in the frame 1, an impeller 13 fixedly connected to the output shaft at the upper end of the motor 12 is rotatably installed in the pump casing 11, a liquid outlet pipe 14 is fixed at the outer end of the pump casing 11, a sealing plate 15 is fixed on the upper end surface of the pump casing 11, a filter frame 3 is fixed on the outer end of the sealing plate 15 through a conduit 16, a liquid inlet pipe 31 is fixed on the outer end of the filter frame 3, a partition 32 is fixed in the filter frame 3, a plurality of mutually matching filter screens 33 are fixed at equal angles on the inner end surface of the partition 32, and a sewage pipe 34 matching the filter screen 33 is rotatably installed in the filter frame 3.

[0026] Working principle: When in use, start the motor 12, and the motor 12 drives the impeller 13 to rotate in the pump housing 11 through its output shaft. The centrifugal force generated by the impeller 13 guides the water in the liquid inlet pipe 31 into the pump housing 11, and the water is discharged through the liquid outlet pipe 14. In the process of the water passing through the filter frame 3, the impurities in the water can be filtered through the filter screen 33 inside the filter frame 3. When it is necessary to discharge the impurities on the surface of the filter screen 33, the outer end of the drain pipe 34 is connected to the external power equipment, and the drain pipe 34 is rotated so that its front end is aligned with the corresponding filter screen 33. The external power equipment is started to generate suction in the drain pipe 34, which can attract the impurities on the surface of the filter screen 33 into the drain pipe 34, and the impurities can be discharged through the drain pipe 34.

[0027] Specifically, the outer periphery of the sealing plate 15 is fixedly connected to the upper end of the pump casing 11 through a threaded plate, the lower end of the conduit 16 is fixedly connected to the outer lower end of the pump casing 11 through a screw, the drain pipe 34 is arranged in an S shape, and the rotational connection between the drain pipe 34 and the filter frame 3 and the center of the multiple filter screens 33 are on the same axis.

[0028] Through the threaded connection effect between the sealing plate 15 and the pump casing 11 and between the conduit 16 and the pump casing 11, the sealing plate 15 can be fixed at the upper end of the pump casing 11. The pump casing 11 can be sealed through the sealing plate 15 to prevent the internal water of the pump casing 11 from overflowing. The rotational connection between the sewage pipe 34 and the filter frame 3 is on the same axis as the center of the multiple filter screens 33. When the sewage pipe 34 is rotated, its front end can be aligned with the position of each filter screen 33.

[0029] It is worth mentioning that a mounting plate 2 is fixed to the upper end surface of the motor 12 through the output shaft, a limiting rod 21 is fixed to the upper end surface of the mounting plate 2, a limiting sleeve 22 is fixed to the middle part of the impeller 13, the limiting rod 21 is arranged in an arc shape, a threaded block 23 is fixed to the middle part of the limiting sleeve 22, the threaded block 23 is inserted and installed in the limiting rod 21, and a threaded rod 24 which is threadably installed on the upper end surface of the mounting plate 2 and which is threadedly matched with the threaded block 23.

[0030] When installing the impeller 13, the impeller 13 is installed in the pump casing 11 through the plug-in cooperation between the limiting plug sleeve 22 and the limiting plug rod 21, and the impeller 13 can be plug-in installed on the upper end of the output shaft of the motor 12. When the threaded block 23 contacts the threaded rod 24, the threaded rod 24 is rotated, and the impeller 13 is driven to move downward through the threaded cooperation between the threaded rod 24 and the threaded block 23, so that the impeller 13 can be positioned. Conversely, the threaded rod 24 can be rotated in the reverse direction to disassemble the impeller 13, which is convenient for inspection and replacement of the impeller 13.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A vertical pipeline centrifugal pump, comprising a frame (1), characterized in that: A pump casing (11) is arranged at the upper end of the frame (1), a motor (12) is fixed in the frame (1), an impeller (13) fixedly connected to an output shaft at the upper end of the motor (12) is rotatably mounted in the pump casing (11), a liquid outlet pipe (14) is fixed at the outer end of the pump casing (11), a sealing plate (15) is fixed to the upper end surface of the pump casing (11), a filter frame (3) is fixed to the outer end of the sealing plate (15) via a guide tube (16), a liquid inlet pipe (31) is fixed to the outer end of the filter frame (3), a partition plate (32) is fixed in the filter frame (3), a plurality of mutually matching filter screens (33) are fixed at equal angles on the inner end surface of the partition plate (32), and a sewage discharge pipe (34) matching the filter screen (33) is rotatably mounted in the filter frame (3).

2. A vertical pipeline centrifugal pump according to claim 1, characterized in that: The outer periphery of the sealing plate (15) is fixedly connected to the upper end of the pump casing (11) via a threaded plate, and the lower end of the conduit (16) is fixedly connected to the outer periphery lower end of the pump casing (11) via a screw rod.

3. A vertical pipeline centrifugal pump according to claim 1, characterized in that: The sewage discharge pipe (34) is arranged in an S shape, and the rotational connection point between the sewage discharge pipe (34) and the filter frame (3) and the center of the plurality of filter screens (33) are located on the same axis.

4. A vertical pipeline centrifugal pump according to claim 1, characterized in that: A mounting plate (2) is fixed to the upper end surface of the motor (12) via an output shaft, a limiting insertion rod (21) is fixed to the upper end surface of the mounting plate (2), and a limiting insertion sleeve (22) is fixed to the middle of the impeller (13).

5. A vertical pipeline centrifugal pump according to claim 4, characterized in that: The limiting plug rod (21) is arranged in an arc shape, a threaded block (23) is fixed in the middle of the limiting plug sleeve (22), the threaded block (23) is inserted and installed in the limiting plug rod (21), and a threaded rod (24) that is threadably matched with the threaded block (23) is rotatably installed on the upper end surface of the mounting plate (2).

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