Centrifugal pump bottom valve filtering device
By designing a centrifugal pump bottom valve filter device with a cutting knife, the problem of filter hole blockage is solved, efficient filtration and fluidity of the liquid are achieved, and the normal operation of the centrifugal pump is ensured.
Patent Information
- Application Number
- CN202422711446.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-07
- Publication Date
- 2025-09-30
- Estimated Expiration
- 2034-11-07
AI Technical Summary
During use, the filter holes of the existing centrifugal pump bottom valve filter device are easily clogged by algae or aquatic plants, affecting the fluidity of the liquid and the cleaning is not perfect.
A filtering device including a frame, a rotating shaft, a support frame and a filter screen was designed. The rotating shaft drives the connecting ring to rotate, the cutting knife cuts foreign matter, and the bottom valve body controls the unidirectional flow of liquid to prevent foreign matter from entering the pump body.
It effectively prevents foreign matter from entering the pump body, maintains the fluidity of the liquid, avoids filter hole clogging, and improves the extraction efficiency of the centrifugal pump.
Smart Images
Figure CN223398970U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of centrifugal pumps, in particular to a bottom valve filtering device for a centrifugal pump. Background Art
[0002] The bottom valve of a centrifugal pump is a one-way check valve installed in the suction line of the pump. Its main function is to prevent the liquid from flowing back when the pump stops, ensuring that there is no need to refill the pump when it is restarted. The basic functions of the bottom valve of a centrifugal pump include preventing the liquid poured in before starting from flowing out of the pump, and acting as a one-way valve to prevent the material in the inlet pipe from flowing back into the pool when the pump is stopped, causing a lack of material. The bottom valve filter device of a centrifugal pump is a device used to prevent impurities in the liquid from entering the pump body and causing damage. It combines a one-way valve and a filtering structure. When a centrifugal pump is conveying liquid, especially liquid containing impurities such as mud and sand, it is easy for impurities in the water to enter the pump, causing damage to the pump. In order to solve this problem, the bottom valve filter device of a centrifugal pump prevents foreign matter from entering the pump by setting a one-way valve and a filtering structure.
[0003] Although the filter device in the prior art has many benefits during use, it still has the following problems. In addition, the cleaning of the filter device is not perfect, which results in algae or aquatic plants in the water body adhering to the filter holes of the filter device when the filter device is soaked in water, causing the filter holes to be blocked, affecting the fluidity of the centrifugal pump to extract the liquid. Utility Model Content
[0004] In view of the problems in the prior art, the utility model provides a centrifugal pump bottom valve filtering device.
[0005] The technical solution adopted by the utility model to solve its technical problems is a centrifugal pump bottom valve filtering device, including a frame, a rotating shaft and a support frame, a rotating shaft is rotatably installed on one side of the lower end of the inner wall of the frame, a connecting pipe is plugged and installed on one side of the outer wall of the upper end of the frame, a movable groove is opened inside the rotating shaft, a connecting shaft is movably installed inside the movable groove, a support frame is installed on the outer wall of the lower end of the connecting shaft, and a connecting ring is installed on the outer wall of the upper end of the support frame.
[0006] By adopting the above technical solution, the rotating shaft can be driven to rotate through the impeller and the flow of liquid, thereby driving the connecting shaft, the supporting frame and the connecting ring to rotate.
[0007] Specifically, filters distributed in a circular array are embedded in the outer wall of the frame, and the filters are designed in an arc shape.
[0008] By adopting the above technical solution, external liquid can pass through the filter and flow into the interior of the frame, and the filter can filter the liquid and prevent foreign matter from flowing in.
[0009] Specifically, a bottom valve body is provided on the outer wall of the upper end of the communicating pipe, flanges are installed on the outer walls of the communicating pipe and the bottom valve body, and the bottom valve body is connected to the communicating pipe through the flange.
[0010] By adopting the above technical solution, the bottom valve body can limit the flow direction of the liquid, thereby achieving the purpose of unidirectional flow of the liquid, and the bottom valve body can be connected to the connecting pipe through the flange to maintain the connection stability between the connecting pipe and the bottom valve body.
[0011] Specifically, an impeller is installed at the upper end of the outer wall of the rotating shaft, and the impeller is located inside the connecting pipe.
[0012] By adopting the above technical solution, the impeller can rotate according to the flow of liquid inside the connecting pipe, thereby driving the rotating shaft to rotate in a circle.
[0013] Specifically, a connecting plate is installed on the outer wall of the upper end of the rotating shaft, and a floating block is installed on the outer wall of the upper end of the connecting plate. Both the connecting plate and the floating block are located inside the communicating pipe.
[0014] By adopting the above technical solution, the connecting block can be driven to move by the flow rate of the liquid inside the connecting tube, thereby driving the connecting shaft to move vertically, and the use position of the connecting ring can be adjusted. The buoyancy of the floating block can overcome the total weight of the connecting block, connecting shaft, support frame, connecting ring and cutting knife inside the liquid, ensuring that the connecting block can be driven to move with the flow of liquid, and the staff can adjust the buoyancy of the floating block according to actual usage requirements. When the liquid stops flowing, the connecting block, connecting shaft, support frame, connecting ring and cutting knife can fall and reset according to their own weight.
[0015] Specifically, the inner wall of the connecting ring is provided with cutting knives distributed in a circular array, and the cutting knives do not contact the outer wall of the frame.
[0016] By adopting the above technical solution, the connecting ring is driven to rotate by the connecting shaft support frame, and the foreign matter on the outside of the filter can be cut by the cutting knife.
[0017] Specifically, the inner wall of the movable groove and the outer wall of the connecting shaft are both designed in a rectangular shape, and the connecting ring is located outside the frame.
[0018] By adopting the above technical solution, the connecting shaft can be driven to rotate by the rotating shaft according to the rectangular shape, so that the connecting ring can rotate outside the frame.
[0019] Beneficial effects of the utility model:
[0020] (1) The utility model describes a centrifugal pump bottom valve filtering device, in which liquid passes through the filter screen, the connecting pipe and the bottom valve body and flows into the interior of the centrifugal pump, thereby achieving the purpose of extracting the liquid. The filter screen filters the liquid to prevent foreign matter from flowing with the liquid, thereby preventing the centrifugal pump from being damaged, and ensuring the smooth extraction of the liquid.
[0021] (2) The centrifugal pump bottom valve filter device described in the present invention has a cutting knife that can cut and crush foreign matter on the outside of the filter, preventing long algae or aquatic plants from adhering to the surface of the filter, ensuring the relative cleanliness of the outer wall of the filter, and the algae or aquatic plants growing inside the filter holes of the filter can be extracted by the negative pressure inside the frame due to being crushed, maintaining the relative cleanliness of the inside of the filter holes, thereby maintaining the smoothness of the flow of liquid through the filter, and improving the smoothness of liquid extraction. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0023] Figure 1 It is an enlarged schematic diagram of the rotating shaft structure of the present utility model;
[0024] Figure 2 This is a schematic diagram of the appearance of the frame structure of the utility model;
[0025] Figure 3 This is a schematic cross-sectional view of the frame structure of the present utility model;
[0026] Figure 4 This is a schematic diagram of the exploded structure of the rotating shaft of the present invention.
[0027] In the figure: 1. Frame; 11. Connecting pipe; 12. Flange; 13. Bottom valve body; 14. Filter; 2. Rotating shaft; 21. Impeller; 22. Movable groove; 23. Connecting shaft; 24. Connecting plate; 25. Floating block; 3. Support frame; 31. Connecting ring; 32. Cutting knife. DETAILED DESCRIPTION
[0028] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.
[0029] In order to save manpower and improve efficiency, as an embodiment of the present invention, Figure 1 、 Figure 2 、 Figure 3 、 Figure 4As shown, the utility model describes a centrifugal pump bottom valve filtering device, comprising a frame 1, a rotating shaft 2 and a support frame 3. The rotating shaft 2 is rotatably installed on one side of the lower end of the inner wall of the frame 1, and a connecting pipe 11 is plugged and installed on one side of the outer wall of the upper end of the frame 1. A movable groove 22 is opened inside the rotating shaft 2, and a connecting shaft 23 is movably installed inside the movable groove 22. The support frame 3 is installed on the outer wall of the lower end of the connecting shaft 23, and the outer wall of the upper end of the support frame 3 is installed on a connecting ring 31.
[0030] When in use, the rotating shaft 2 can be driven to rotate by the impeller 21 and the flow of liquid, thereby driving the connecting shaft 23, the supporting frame 3 and the connecting ring 31 to rotate.
[0031] To filter a liquid, for example, Figure 3 As shown, the outer wall of the frame 1 is embedded with filters 14 distributed in a circular array, and the filters 14 are designed in an arc shape.
[0032] When in use, external liquid can pass through the filter 14 and flow into the interior of the frame 1 , and the filter 14 can filter the liquid and prevent foreign matter from flowing in.
[0033] In order to control the direction of liquid flow, for example, Figure 2 As shown, a bottom valve body 13 is provided on the outer wall of the upper end of the connecting pipe 11 , flanges 12 are installed on the outer walls of the connecting pipe 11 and the bottom valve body 13 , and the bottom valve body 13 is connected to the connecting pipe 11 through the flange 12 .
[0034] When in use, the bottom valve body 13 can limit the flow direction of the liquid, thereby achieving the purpose of unidirectional flow of the liquid, and the bottom valve body 13 can be connected to the connecting pipe 11 through the flange 12 to maintain the connection stability between the connecting pipe 11 and the bottom valve body 13.
[0035] In order to rotate the shaft 2, for example, Figure 1 As shown, an impeller 21 is installed on the upper end of the outer wall of the rotating shaft 2, and the impeller 21 is located inside the connecting pipe 11.
[0036] When in use, the impeller 21 can rotate according to the flow of liquid inside the communicating tube 11 , thereby driving the rotating shaft 2 to rotate in a circular motion.
[0037] In order to move the connecting ring 31, for example, Figure 1 As shown, a connecting plate 24 is installed on the outer wall of the upper end of the rotating shaft 2 , and a floating block 25 is installed on the outer wall of the upper end of the connecting plate 24 . Both the connecting plate 24 and the floating block 25 are located inside the connecting pipe 11 .
[0038] During use, the connecting block can be driven to move by the flow rate of the liquid inside the connecting tube 11, thereby driving the connecting shaft 23 to move vertically, and the use position of the connecting ring 31 can be adjusted. The buoyancy of the floating block 25 can overcome the total weight of the connecting block, connecting shaft 23, support frame 3, connecting ring 31 and cutting knife 32 inside the liquid, ensuring that the connecting block can be driven to move with the flow of the liquid, and the staff adjusts the buoyancy of the floating block 25 according to actual use requirements. When the liquid stops flowing, the connecting block, connecting shaft 23, support frame 3, connecting ring 31 and cutting knife 32 can fall and reset according to their own weight.
[0039] In order to cut foreign matter, for example, Figure 1 As shown, the inner wall of the connecting ring 31 is provided with cutting knives 32 distributed in a circular array, and the cutting knives 32 do not contact the outer wall of the frame 1 .
[0040] When in use, the connecting ring 31 is driven to rotate by the connecting shaft 23 and the supporting frame 3 , and the foreign matter on the outside of the filter screen 14 can be cut by the cutting knife 32 .
[0041] In order to connect the ring 31 to rotate, for example, Figure 3 As shown, the inner wall of the movable groove 22 and the outer wall of the connecting shaft 23 are both designed in a rectangular shape, and the connecting ring 31 is located outside the frame 1.
[0042] When in use, the connecting shaft 23 can be driven to rotate by the rotating shaft 2 according to the rectangular shape, so that the connecting ring 31 can rotate outside the frame 1.
[0043] When the utility model is in use, the external centrifugal pump is connected to the bottom valve body 13 through the water pipe, and the centrifugal pump drives the liquid to flow, so that the liquid passes through the filter 14, the connecting pipe 11 and the bottom valve body 13 and flows into the interior of the centrifugal pump, so that the liquid can be extracted;
[0044] The filter screen 14 filters the liquid to prevent foreign matter from flowing with the liquid and to prevent the centrifugal pump from being damaged.
[0045] According to the above-mentioned liquid extraction steps, when the liquid is extracted from the connecting pipe 11 and reaches the initial flow rate, it can drive the impeller 21 to rotate in a circular motion, and the impeller 21 drives the support frame 3 and the connecting ring 31 to rotate through the rotating shaft 2, the connecting groove and the connecting shaft 23. The connecting ring 31 can cut and crush foreign matter on the outside of the filter screen 14 through the cutting knife 32, thereby preventing long algae or aquatic plants from adhering to the surface of the filter screen 14. The algae or aquatic plants growing inside the filter holes of the filter screen 14 can be extracted due to the negative pressure inside the frame 1 due to being crushed, thereby maintaining the smooth flow of the liquid through the filter screen 14.
[0046] When the liquid is extracted from the connecting pipe 11 and reaches the maximum flow rate, the flow of the liquid can drive the connecting plate 24 to move, so that the connecting plate 24 can drive the connecting ring 31 to move vertically upward on the outside of the frame 1 through the connecting shaft 23 and the support frame 3. Since the connecting ring 31 is still in a rotating state, the cutting knife 32 can cut and clean different layers of the filter screen 14.
[0047] It should be noted that the present invention is a centrifugal pump bottom valve filter device. The components in the present invention are all components known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or conventional experimental methods.
[0048] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.
Claims
1. A centrifugal pump bottom valve filtering device, characterized in that: The invention comprises a frame (1), a rotating shaft (2) and a supporting frame (3); the rotating shaft (2) is rotatably mounted on one side of the lower end of the inner wall of the frame (1); a connecting pipe (11) is plugged and mounted on one side of the outer wall of the upper end of the frame (1); a movable groove (22) is provided inside the rotating shaft (2); a connecting shaft (23) is movably mounted inside the movable groove (22); the supporting frame (3) is mounted on the outer wall of the lower end of the connecting shaft (23); and a connecting ring (31) is mounted on the outer wall of the upper end of the supporting frame (3).
2. A centrifugal pump bottom valve filtering device according to claim 1, characterized in that: Filter screens (14) distributed in a circular array are embedded and installed on the outer wall of the frame (1), and the filter screens (14) are designed in an arc shape.
3. A centrifugal pump bottom valve filtering device according to claim 1, characterized in that: A bottom valve body (13) is provided on the outer wall of the upper end of the connecting pipe (11), flanges (12) are installed on the outer walls of the connecting pipe (11) and the bottom valve body (13), and the bottom valve body (13) is connected to the connecting pipe (11) through the flange (12).
4. A centrifugal pump bottom valve filtering device according to claim 1, characterized in that: An impeller (21) is installed on the upper end of the outer wall of the rotating shaft (2), and the impeller (21) is located inside the connecting pipe (11).
5. The centrifugal pump bottom valve filtering device according to claim 1, characterized in that: A connecting plate (24) is installed on the outer wall of the upper end of the rotating shaft (2), and a floating block (25) is installed on the outer wall of the upper end of the connecting plate (24). Both the connecting plate (24) and the floating block (25) are located inside the connecting pipe (11).
6. The centrifugal pump bottom valve filtering device according to claim 1, characterized in that: The inner wall of the connecting ring (31) is provided with cutting knives (32) distributed in a circular array, and the cutting knives (32) do not contact the outer wall of the frame (1).
7. The centrifugal pump bottom valve filtering device according to claim 1, characterized in that: The inner wall of the movable groove (22) and the outer wall of the connecting shaft (23) are both designed in a rectangular shape, and the connecting ring (31) is located outside the frame (1).