Axial flow water pump anti-winding impeller inlet protection structure

Abstract

The utility model relates to axial flow pump technical field discloses axial flow water pump anti -winding's impeller import protection structure, including the pump body, the bottom of pump body is provided with the water inlet, the bottom of water inlet is installed with the protective cover, the bottom fixed mounting of protective cover has the connecting plate, the bottom fixed mounting of connecting plate has the mounting panel, the top of mounting panel installs the cylindrical filter screen, the inside rotatory mounting of cylindrical filter screen has the connecting shaft, the outer surface of connecting shaft is sleeved with the fixed sleeve, the outer surface fixed mounting of fixed sleeve has the scraper, the bottom fixed mounting of scraper has the cleaning plate. In the utility model, cylindrical filter screen can filter the water flow that sucks to the inside of pump body, avoid impeller winding sundries, and the scraper and cleaning plate are pasted in the top and the outer surface of cylindrical filter screen and rotate, and the sundries that the outer surface of cylindrical filter screen adheres are scraped and cleaned, avoid sundries and block up cylindrical filter screen, influence water delivery efficiency.

Description

Technical Field

[0001] This utility model relates to the field of axial flow pump technology, and in particular to an impeller inlet protection structure for preventing entanglement in axial flow water pumps. Background Technology

[0002] Axial flow pumps are pumps that use the force generated by the blades of a rotating impeller to transport liquid along the axial direction. Their core characteristics are high flow rate and low head, and they are widely used in scenarios that require rapid drainage or water transfer.

[0003] Axial flow pumps connect the output shaft of a motor to the top of an impeller, allowing the impeller to rotate at the bottom of the pump body's inner wall. This draws liquid into the pump body for transport. Because the impeller is located at the bottom of the pump body's inner wall, it also draws in impurities along with the liquid as it rotates. When impurities such as cloth or weeds are drawn in, they become entangled on the outside of the impeller, hindering its rotation and damaging the axial flow pump. Therefore, there is an urgent need for an anti-entanglement impeller inlet protection structure for axial flow pumps. Utility Model Content

[0004] To overcome the above deficiencies, this utility model provides an impeller inlet protection structure for preventing entanglement in axial flow water pumps. It aims to improve the problem that when the impeller rotates and sucks in liquid, impurities inside the liquid are sucked in and become entangled on the outside of the impeller, hindering the impeller's rotation.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an impeller inlet protection structure for preventing entanglement in an axial flow water pump, comprising a pump body, an inlet at the bottom of the pump body, an outlet at the top of the pump body, a protective cover at the bottom of the inlet, a connecting plate fixedly installed at the bottom of the protective cover, an mounting plate fixedly installed at the bottom of the connecting plate, a cylindrical filter screen installed at the top of the mounting plate, a connecting shaft rotatably installed inside the cylindrical filter screen, a fixing sleeve fitted onto the outer surface of the connecting shaft, a scraper fixedly installed on the outer surface of the fixing sleeve, a cleaning plate fixedly installed at the bottom of the scraper, and a water conveying assembly inside the pump body.

[0006] Through the above technical solution, a cylindrical filter screen is inserted into the interior of two connecting plates and a protective cover. The mounting plate is fixedly installed at the bottom of the two connecting plates, so that the bottom of the cylindrical filter screen can be connected to the top of the mounting plate. A connecting shaft passes through the top of the cylindrical filter screen to the bottom of the cylindrical filter screen. The bottom of the connecting shaft is rotatably installed on the top of the mounting plate. A fixing sleeve is fixedly fitted onto the outer surface of the top of the cylindrical filter screen. A scraper that adheres to the top of the cylindrical filter screen is fixedly installed on the outer surface of the fixing sleeve. A cleaning plate that adheres to the side wall of the outer surface of the cylindrical filter screen is fixedly installed at the bottom of the scraper. Thus, the rotation of the connecting shaft can drive the fixing sleeve, scraper, and cleaning plate to rotate and clean the outer surface of the cylindrical filter screen.

[0007] Preferably, the scraper is disposed on the top of the cylindrical filter screen, and the cleaning plate is disposed on the outer surface of the cylindrical filter screen.

[0008] Preferably, the bottom of the connecting shaft passes through the cylindrical filter screen and is rotatably mounted on the top of the mounting plate, and the fixing sleeve is disposed on the top of the cylindrical filter screen.

[0009] Preferably, the water delivery assembly includes a mounting bracket fixedly installed on the outer wall of the pump body, a support frame fixedly installed on the top of the mounting bracket, a drive motor installed on the top of the support frame, a rotating shaft installed through the output shaft of the drive motor through the support frame, the bottom of the rotating shaft passing through the mounting bracket and the outer wall of the pump body and extending into the interior of the pump body, and an impeller installed at the bottom of the rotating shaft.

[0010] Preferably, the impeller is disposed at the top of the cylindrical filter screen, and the bottom of the impeller is fixedly connected to the top of the connecting shaft.

[0011] Preferably, a collar is rotatably sleeved on the outer surface of the rotating shaft, and a guide vane is installed on the outer surface of the collar.

[0012] Preferably, the collar is disposed on the top of the impeller, and a positioning rod is fixedly installed on the outer surface of the collar. The end of the positioning rod away from the collar passes through the pump body and is fitted with a fixing cap.

[0013] Preferably, multiple guide vanes are provided, and the multiple guide vanes are distributed in a circumferential array on the outer surface of the collar.

[0014] This utility model has the following beneficial effects: 1. In this utility model, the cylindrical filter screen can filter the water flow drawn into the pump body, preventing the impeller from getting entangled with debris. The scraper and cleaning plate are attached to the top and outer surface of the cylindrical filter screen and rotate to scrape and clean the debris adhering to the outer surface of the cylindrical filter screen, preventing the debris from clogging the cylindrical filter screen and affecting the water delivery efficiency.

[0015] 2. In this utility model, water is drawn into the pump body by the rotation of the impeller. The water flows through multiple guide vanes, which can eliminate the rotational motion of the water and convert the kinetic energy of the water into pressure energy, so that the water flows out of the outlet at an accelerated speed, thereby achieving the effect of transporting water and improving the impeller's water transport efficiency. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the anti-winding impeller inlet protection structure for the axial flow water pump proposed in this utility model. Figure 2 This is a schematic cross-sectional view of the rotating shaft of the anti-winding impeller inlet protection structure for the axial flow water pump proposed in this utility model. Figure 3 This is a schematic diagram of the cylindrical filter screen of the anti-winding impeller inlet protection structure for the axial flow water pump proposed in this utility model. Figure 4 This is a schematic diagram of the guide vane of the anti-winding impeller inlet protection structure for axial flow water pumps proposed in this utility model.

[0017] Legend: 1. Pump body; 11. Inlet; 12. Outlet; 101. Protective cover; 102. Connecting plate; 103. Mounting plate; 104. Columnar filter screen; 105. Connecting shaft; 106. Fixing sleeve; 107. Scraper; 108. Cleaning plate; 2. Water conveying assembly; 21. Mounting bracket; 22. Support bracket; 23. Drive motor; 24. Rotating shaft; 25. Impeller; 3. Collar; 31. Guide vane; 4. Positioning rod; 41. Fixing cap. Detailed Implementation

[0018] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0019] Reference Figure 1-4 An embodiment of this utility model provides an anti-winding impeller inlet protection structure for an axial flow water pump, comprising a pump body 1, an inlet 11 at the bottom of the pump body 1, an outlet 12 at the top of the pump body 1, a protective cover 101 at the bottom of the inlet 11, a connecting plate 102 fixedly installed at the bottom of the protective cover 101, an mounting plate 103 fixedly installed at the bottom of the connecting plate 102, a cylindrical filter screen 104 installed at the top of the mounting plate 103, a connecting shaft 105 rotatably installed inside the cylindrical filter screen 104, a fixing sleeve 106 sleeved on the outer surface of the connecting shaft 105, a scraper 107 fixedly installed on the outer surface of the fixing sleeve 106, a cleaning plate 108 fixedly installed at the bottom of the scraper 107, and a water conveying assembly 2 disposed inside the pump body 1.

[0020] The scraper 107 is disposed on the top of the cylindrical filter screen 104, and the cleaning plate 108 is disposed on the outer surface of the cylindrical filter screen 104.

[0021] The bottom of the connecting shaft 105 passes through the cylindrical filter screen 104 and is rotatably mounted on the top of the mounting plate 103. The fixing sleeve 106 is set on the top of the cylindrical filter screen 104.

[0022] Specifically, the protective cover 101 is bolted to the bottom of the inlet 11. The protective cover 101 covers and protects the impeller 25 and the connecting shaft 105. According to the specifications of the cylindrical filter screen 104, two arc-shaped connecting plates 102 are fixedly installed to the bottom of the protective cover 101. The cylindrical filter screen 104 is inserted into the interior of the two connecting plates 102 and the protective cover 101. The mounting plate 103 is fixedly installed to the bottom of the two connecting plates 102, allowing the bottom of the cylindrical filter screen 104 to be connected to the top of the mounting plate 103. The cylindrical filter screen 104 is then positioned inside the protective cover 101, so that the protective cover 101 is located below the inlet 11. The connecting shaft 105 extends from the top to the bottom of the cylindrical filter screen 104. The bottom of the connecting shaft 105 is rotatably mounted to the top of the mounting plate 103. The connecting shaft 105 is located within the cylindrical filter screen. A fixed sleeve 106 is attached to the outer surface of the top of the screen 104. A scraper 107 is fixedly installed on the outer surface of the fixed sleeve 106 and adheres to the top of the columnar filter screen 104. A cleaning plate 108 is fixedly installed at the bottom of the scraper 107 and adheres to the side wall of the outer surface of the columnar filter screen 104. The rotation of the connecting shaft 105 can drive the fixed sleeve 106, the scraper 107 and the cleaning plate 108 to rotate on the outer surface of the columnar filter screen 104. After the water delivery component 2 inside the pump body 1 is started, it draws water. The water will first pass through the columnar filter screen 104 and then enter the interior of the pump body 1, so that the columnar filter screen 104 can filter the drawn water and prevent the impeller 25 inside the pump body 1 from getting entangled with debris. The rotation of the scraper 107 and the cleaning plate 108 can scrape and clean the debris adhering to the outer surface of the columnar filter screen 104, so as to prevent the debris from clogging the columnar filter screen 104 and affecting the water delivery efficiency. It should be noted that there is a certain gap between the cylindrical filter screen 104 and the protective cover 101, which is used for the rotation of the cleaning plate 108. The gap is small and will not allow large pieces of debris to enter the impeller 25 and become entangled in it. Small pieces of debris will not affect the rotation of the impeller 25, and the rotation of the cleaning rod can block debris in the gap.

[0023] Considering the question of how the pump body 1 rotates to transport water and drive the connecting shaft 105 to rotate, refer to... Figure 2 - Figure 4 The water delivery assembly 2 includes a mounting bracket 21 fixedly installed on the outer wall of the pump body 1. A support bracket 22 is fixedly installed on the top of the mounting bracket 21. A drive motor 23 is installed on the top of the support bracket 22. The output shaft of the drive motor 23 passes through the support bracket 22 and a rotating shaft 24 is installed thereon. The bottom of the rotating shaft 24 passes through the mounting bracket 21 and the outer wall of the pump body 1 and extends into the interior of the pump body 1. An impeller 25 is installed at the bottom of the rotating shaft 24.

[0024] Impeller 25 is positioned on top of cylindrical filter screen 104, and the bottom of impeller 25 is fixedly connected to the top of connecting shaft 105.

[0025] Specifically, the drive motor 23 is fixedly placed by the support frame 22, so that the output shaft of the drive motor 23 can be connected to the rotating shaft 24. The rotating shaft 24 passes through the mounting frame 21 and the outer wall of the pump body 1 and enters the interior of the pump body 1. The bottom of the rotating shaft 24 extends to the bottom of the inner wall of the pump body 1 and connects with the impeller 25 inside the inlet 11. When the drive motor 23 is powered on, it can drive the rotating shaft 24 and the impeller 25 to rotate, drawing water into the interior of the pump body 1, so that the water flows out from the outlet 12 of the pump body 1, achieving the effect of water delivery. The bottom of the impeller 25 is connected to the top of the connecting shaft 105, so that the rotation of the impeller 25 can drive the connecting shaft 105 to rotate together, so that the scraper 107 and the cleaning plate 108 rotate on the outer surface of the cylindrical filter screen 104, scraping and cleaning the debris adhering to the outer surface of the cylindrical filter screen 104.

[0026] Furthermore, considering the issue of how to stably transport the water flow sucked into the pump body 1, refer to... Figure 4 A collar 3 is rotatably sleeved on the outer surface of the rotating shaft 24, and a guide vane 31 is installed on the outer surface of the collar 3.

[0027] The collar 3 is set on the top of the impeller 25. A positioning rod 4 is fixedly installed on the outer surface of the collar 3. The end of the positioning rod 4 away from the collar 3 passes through the pump body 1 and is fitted with a fixing cap 41.

[0028] Multiple guide vanes 31 are provided, and the multiple guide vanes 31 are located on the outer surface of the collar 3 in a circumferential array.

[0029] Specifically, the collar 3 is rotated and fitted onto the outer surface of the rotating shaft 24, so that multiple guide vanes 31 can be fixedly installed on the outer surface of the collar 3. The positioning rod 4 is inserted through the outer surface of the pump body 1, and the fixing cap 41 is screwed onto the outer surface of the positioning rod 4 located outside the pump body 1, so that the impeller 25 is limited and fixed inside the pump body 1. Then, the impeller 25 rotates to draw water into the pump body 1. The water flow will pass through multiple guide vanes 31. The guide vanes 31 can eliminate the rotational motion of the water flow and convert the kinetic energy of the water flow into pressure energy, thereby enhancing the water conveying efficiency of the impeller 25.

[0030] Working principle: When using the axial flow pump, the inlet 11 of the pump body 1 is placed below the water surface, the outlet 12 is facing the direction of drainage, and an outlet pipe can be installed at the outlet 12. The drive motor 23 is powered on and started to drive the rotating shaft 24 and impeller 25 to rotate, drawing water into the pump body 1. The water flows through multiple guide vanes 31, which can eliminate the rotational motion of the water flow and convert the kinetic energy of the water flow into pressure energy, so that the water flow is accelerated and flows out from the outlet 12, achieving the effect of transporting water and enhancing the transport efficiency of the impeller 25. When the impeller 25 rotates to draw in water, the water flow first passes through the cylindrical filter screen 104 before entering the pump body 1. This allows the cylindrical filter screen 104 to filter the drawn-in water flow, preventing impeller 25 from getting entangled with debris. At the same time, the rotation of the impeller 25 can drive the connecting shaft 105 to rotate as well, causing the scraper 107 and the cleaning plate 108 to rotate against the top and outer surface of the cylindrical filter screen 104, scraping and cleaning the debris adhering to the outer surface of the cylindrical filter screen 104, preventing debris from clogging the cylindrical filter screen 104 and affecting the water delivery efficiency.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An anti-winding impeller inlet protection structure for an axial flow water pump, comprising a pump body (1), a water inlet (11) is arranged at the bottom of the pump body (1), characterized in that: The pump body (1) is equipped with an outlet (12) at the top, a protective cover (101) is installed at the bottom of the inlet (11), a connecting plate (102) is fixedly installed at the bottom of the protective cover (101), an installation plate (103) is fixedly installed at the bottom of the connecting plate (102), a cylindrical filter screen (104) is installed at the top of the installation plate (103), a connecting shaft (105) is rotatably installed inside the cylindrical filter screen (104), a fixing sleeve (106) is sleeved on the outer surface of the connecting shaft (105), a scraper (107) is fixedly installed on the outer surface of the fixing sleeve (106), a cleaning plate (108) is fixedly installed at the bottom of the scraper (107), and a water conveying assembly (2) is provided inside the pump body (1).

2. The anti-winding impeller inlet guard structure for an axial-flow water pump according to claim 1, characterized in that: The scraper (107) is disposed on the top of the cylindrical filter screen (104), and the cleaning plate (108) is disposed on the outer surface of the cylindrical filter screen (104).

3. The anti-winding impeller inlet shroud for an axial-flow water pump according to claim 2, characterized in that: The bottom of the connecting shaft (105) passes through the cylindrical filter screen (104) and is rotatably mounted on the top of the mounting plate (103), and the fixing sleeve (106) is set on the top of the cylindrical filter screen (104).

4. The impeller inlet protection structure for preventing entanglement in an axial flow water pump according to claim 1, characterized in that: The water delivery assembly (2) includes a mounting bracket (21) fixedly installed on the outer wall of the pump body (1). A support frame (22) is fixedly installed on the top of the mounting bracket (21). A drive motor (23) is installed on the top of the support frame (22). The output shaft of the drive motor (23) passes through the support frame (22) and a rotating shaft (24) is installed thereon. The bottom of the rotating shaft (24) passes through the mounting bracket (21) and the outer wall of the pump body (1) and extends into the interior of the pump body (1). An impeller (25) is installed at the bottom of the rotating shaft (24).

5. The anti-winding impeller inlet shroud for an axial-flow pump according to claim 4, characterized in that: The impeller (25) is disposed on the top of the cylindrical filter screen (104), and the bottom of the impeller (25) is fixedly connected to the top of the connecting shaft (105).

6. The impeller inlet protection structure for anti-winding of axial flow water pump according to claim 4, characterized in that: The outer surface of the rotating shaft (24) is rotatably sleeved with a collar (3), and a guide vane (31) is installed on the outer surface of the collar (3).

7. The anti-winding impeller inlet shroud for an axial-flow pump according to claim 6, characterized in that: The collar (3) is set on the top of the impeller (25), and a positioning rod (4) is fixedly installed on the outer surface of the collar (3). The end of the positioning rod (4) away from the collar (3) passes through the pump body (1) and is fitted with a fixing cap (41).

8. The anti-winding impeller inlet shroud for an axial-flow water pump according to claim 7, characterized in that: Multiple guide vanes (31) are provided, and the multiple guide vanes (31) are arranged in a circular array on the outer surface of the collar (3).

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