Anti-cavitation water pump

Abstract

The utility model relates to the technical field of water pump cavitation prevention, and discloses an anti-cavitation water pump which comprises a water pump body, the input end of the water pump body is fixedly connected with a connecting pipe, the input end of the connecting pipe is fixedly connected with two circulating pipes, water valves are arranged in the circulating pipes, and the input ends of the two circulating pipes are fixedly connected with a water inlet pipe; according to the anti-cavitation water pump, when the angle of a baffle needs to be adjusted through a hexagonal barrel, people pull the hexagonal barrel to enable a plurality of sliding rods to be separated from fixing holes, after separation is completed, people screw the hexagonal barrel, and a hexagonal block, a rotating rod and a rotating block can be driven to rotate through limiting of the sliding rods and a circular plate; and by arranging the two circulation pipes, the flow dividing effect on water flow can be achieved, the flow of a single pipe can be balanced, and sudden pressure drop caused by the too high flow speed is avoided.

Description

Technical Field

[0001] This application relates to the field of anti-cavitation technology for water pumps, specifically an anti-cavitation water pump. Background Technology

[0002] In the circulating water systems of thermal power plants or industrial circulating cooling systems, cooling towers are mostly used for cooling and circulating water pumps are used to reuse cooling water. However, circulating water pumps are mostly pump types with low outlet pressure and large flow rate. Their large water intake can easily cause some air to be introduced into the inlet pipe. When air enters the inlet of the pump impeller, cavitation can easily occur. In severe cases, the pump may not even be able to draw liquid and will make noise. If the pump operates under this condition for a long time, it will lead to premature blade damage.

[0003] An existing patent (publication number: CN215980160U) discloses an anti-cavitation device for water pumps, belonging to the field of anti-cavitation technology for water pumps. It includes a water pump body, with a connecting pipe at the inlet end of the pump body. A baffle assembly is detachably connected to the top of the connecting pipe, and a gas collecting tank is also connected to the top of the connecting pipe. The gas collecting tank is located between the baffle assembly and the water pump body. The end of the gas collecting tank furthest from the connecting pipe is connected to an exhaust pipe with a valve, effectively preventing water pump cavitation. The baffle assembly includes a semi-circular block and an arc-shaped mounting plate. One end of the semi-circular block, opposite to the other, penetrates the connecting pipe and is located within its inner cavity. The arc-shaped mounting plate is embedded in the wall of the connecting pipe, and the width of its vertical cross-section is greater than that of the semi-circular block. This baffle assembly structure not only provides good sealing but also allows for easy removal and timely replacement after a period of use, preventing damage to the baffle assembly and a reduction in its anti-cavitation effect.

[0004] While the device in the aforementioned comparative document solves the problem that the baffle is inconvenient to disassemble and replace, thus preventing timely replacement when the baffle is damaged and resulting in a reduction in the anti-cavitation effect, the baffle is a fixed semi-circle in use and lacks an angle adjustment structure, making it impossible to adjust the separation efficiency according to the water flow velocity and gas content. In order to solve the above problems, an anti-cavitation water pump is proposed. Utility Model Content

[0005] To address the shortcomings of existing technologies, this application provides an anti-cavitation water pump with advantages such as an angle adjustment structure, which solves the problem of not being able to adjust the separation efficiency according to the water flow velocity and air content.

[0006] To achieve the above objectives, this application provides the following technical solution: an anti-cavitation water pump, comprising a water pump body, wherein a connecting pipe is fixedly connected to the input end of the water pump body, two flow pipes are fixedly connected to the input end of the connecting pipe, a water valve is provided inside the flow pipe, and a water inlet pipe is fixedly connected to the input ends of the two flow pipes.

[0007] A mounting frame is fixedly connected to the surface of the flow tube. A mounting plate is mounted to the top of the mounting frame via mounting bolts. A fixed shell is fixedly connected to the top of the mounting plate. Waterproof bearings are fixedly connected to opposite sides of the fixed shell. A rotating rod is rotatably connected inside the two waterproof bearings. A pointer is fixedly connected to one end of the rotating rod. A scale line is provided on the side of the fixed shell. A circular plate is fixedly connected to the other end of the rotating rod. A hexagonal block is fixedly connected to the side of the circular plate. A hexagonal cylinder is slidably disposed on the surface of the hexagonal block. A rotating block is fixedly connected to the surface of the rotating rod. A baffle is fixedly connected to the surface of the rotating block.

[0008] With the above scheme, when the angle of the baffle needs to be adjusted using the hexagonal cylinder, people pull the hexagonal cylinder to disengage multiple sliding rods from the fixing holes. After disengagement, people turn the hexagonal cylinder, and through the limiting of the sliding rods and the circular plate, the hexagonal block, rotating rod, and rotating block can be rotated. By rotating the rotating block, the angle of the baffle can be adjusted. By setting two flow pipes, the water flow can be diverted, the flow rate of a single pipe can be balanced, and the pressure drop caused by excessive flow velocity can be avoided.

[0009] Furthermore, a fixing ring is fixedly connected to the other side of the fixed shell, and the fixing ring is coaxial with the rotating rod.

[0010] The above method determines the position of the fixed ring by ensuring that the fixed ring and the rotating rod are coaxial.

[0011] Furthermore, the fixing ring has multiple fixing holes inside, the circular plate has a sliding hole inside, a sliding rod is slidably connected inside the sliding hole, one end of the sliding rod is engaged in the fixing hole, fixing rings are fixedly connected to the surfaces of multiple sliding rods, the other end of the sliding rod is fixedly connected to one end of the hexagonal cylinder, and annular plates are fixedly connected to the surfaces of multiple sliding rods.

[0012] The above scheme allows the slide rod to slide inside the sliding hole, thus achieving the adjustability of the circular plate. By setting the slide rod and connecting the fixing ring and the hexagonal cylinder, the circular plate can be fixed and adjusted.

[0013] Furthermore, a connecting spring is fixedly connected to the side of the hexagonal block, and one end of the connecting spring is fixedly connected to the inner side of the hexagonal cylinder.

[0014] The above solution, by setting a connecting spring, can provide elastic force to maintain a tight connection between the hexagonal block and the hexagonal cylinder.

[0015] Furthermore, a convex sealing strip is fixedly connected to the top of the mounting frame, and a concave sealing strip is fixedly connected to the bottom of the mounting plate, with the top of the convex sealing strip snapped into the concave sealing strip.

[0016] The above solution, by having the top of the convex sealing strip snap into the concave sealing strip, allows for a double waterproof design, thereby improving the sealing between the mounting plate and the mounting frame and preventing water leakage.

[0017] Furthermore, the surface of the baffle is coated with a tungsten carbide-polytetrafluoroethylene composite coating.

[0018] By implementing the above solution and applying a tungsten carbide-polytetrafluoroethylene composite coating, frictional resistance can be reduced and bubble formation can be suppressed, thereby extending the baffle life and reducing performance degradation caused by corrosion.

[0019] Furthermore, a gas collecting tank is fixedly connected to the surface of each of the two flow pipes, and an exhaust pipe is fixedly connected to the top of the gas collecting tank.

[0020] The above solution collects air bubbles in the flow pipe and controls the valve to periodically vent the gas, thus preventing gas accumulation that could lead to cavitation.

[0021] Furthermore, a control valve is fixedly connected inside the exhaust pipe, and a glass tube is connected to the end of the exhaust pipe away from the gas collection tank.

[0022] The above solution involves connecting a glass tube to the end of the exhaust pipe away from the gas collection tank, creating a transparent and visible design to observe the gas discharge status.

[0023] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0024] This anti-cavitation water pump uses a hexagonal cylinder. When the angle of the baffle needs to be adjusted, the hexagonal cylinder is pulled to disengage multiple sliding rods from the fixing holes. After disengagement, the hexagonal cylinder is turned, and the hexagonal block, rotating rod, and rotating block are rotated by the limiting action of the sliding rods and the circular plate. The rotation of the rotating block adjusts the angle of the baffle. By setting two flow pipes, the water flow can be diverted, balancing the flow rate of a single pipe and preventing a sudden drop in pressure due to excessive flow velocity. Attached Figure Description

[0025] Figure 1 This is a frontal three-dimensional structural diagram of this application;

[0026] Figure 2 This is a side-view perspective three-dimensional structural diagram of this application;

[0027] Figure 3 This is a schematic diagram of the mounting plate in this application;

[0028] Figure 4 This is a structural schematic diagram of the cross-section of the fixed shell in this application;

[0029] Figure 5 for Figure 1A magnified cross-sectional view of the structure at point A in the middle.

[0030] In the picture:

[0031] 1. Water pump body;

[0032] 2. Connecting pipe; 201. Flow pipe; 202. Convex sealing strip; 203. Water inlet pipe; 204. Water valve; 205. Gas collection tank; 206. Exhaust pipe; 207. Control valve; 208. Glass tube; 209. Mounting frame;

[0033] 3. Mounting plate; 301. Mounting bolt; 302. Fixing shell; 303. Recessed sealing strip; 304. Waterproof bearing; 305. Rotating rod; 306. Rotating block; 307. Pointer; 308. Scale line; 309. Circular plate; 3010. Hexagonal block; 3011. Connecting spring; 3012. Baffle; 3013. Fixing ring; 3014. Fixing hole; 3015. Sliding hole; 3016. Hexagonal cylinder; 3017. Annular plate; 3018. Tungsten carbide-PTFE composite coating; 3019. Sliding rod. Detailed Implementation

[0034] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0035] Please see Figure 1 , Figure 3 and Figure 4 The anti-cavitation water pump in this embodiment includes a water pump body 1. A connecting pipe 2 is fixedly connected to the input end of the water pump body 1. Two flow pipes 201 are fixedly connected to the input end of the connecting pipe 2. A water valve 204 is installed inside the flow pipe 201. A water inlet pipe 203 is fixedly connected to the input end of the two flow pipes 201. By setting two flow pipes 201, the water flow can be diverted, the flow rate of a single pipe can be balanced, and the pressure drop caused by excessive flow velocity can be avoided.

[0036] A mounting frame 209 is fixedly connected to the surface of the flow tube 201. A mounting plate 3 is mounted to the top of the mounting frame 209 via mounting bolts 301. A fixing shell 302 is fixedly connected to the top of the mounting plate 3. Waterproof bearings 304 are fixedly connected to opposite sides of the fixing shell 302. A rotating rod 305 is rotatably connected inside the two waterproof bearings 304. A pointer 307 is fixedly connected to one end of the rotating rod 305. A scale line 308 is provided on the side of the fixing shell 302. A circular plate 309 is fixedly connected to the other end of the rotating rod 305. A hexagonal block 3010 is fixedly connected to the side of the circular plate 309. A sliding surface is provided on the surface of the hexagonal block 3010. A hexagonal cylinder 3016 has a rotating block 306 fixedly connected to the surface of a rotating rod 305, and a baffle 3012 fixedly connected to the surface of the rotating block 306. When it is necessary to adjust the angle of the baffle 3012 through the hexagonal cylinder 3016, people pull the hexagonal cylinder 3016 to disengage multiple sliding rods 3019 from the fixing hole 3014. After disengagement, people turn the hexagonal cylinder 3016. Through the limiting of the sliding rods 3019 and the circular plate 309, the hexagonal block 3010, the rotating rod 305 and the rotating block 306 can be rotated. By rotating the rotating block 306, the angle of the baffle 3012 can be adjusted.

[0037] Please see Figure 4 A fixing ring 3013 is fixedly connected to the other side of the fixed shell 302. The fixing ring 3013 is coaxial with the rotating rod 305. The position of the fixing ring 3013 is determined by the coaxiality of the fixing ring 3013 and the rotating rod 305. Multiple fixing holes 3014 are opened inside the fixing ring 3013. A sliding hole 3015 is opened inside the circular plate 309. A sliding rod 3019 is slidably connected inside the sliding hole 3015. One end of the sliding rod 3019 is engaged in the fixing hole 3014. The fixing ring 3013 is fixedly connected to the surface of the multiple sliding rods 3019. The other end of the sliding rod 3019 is fixedly connected to one end of the hexagonal cylinder 3016. An annular plate 3017 is fixedly connected to the surface of the multiple sliding rods 3019. By setting the sliding hole 3015, the sliding rod 3019 is allowed to slide inside it, realizing the circular plate 309. Adjustability is achieved by setting a slide bar 3019, connecting the fixing ring 3013 and the hexagonal cylinder 3016, so as to fix and adjust the circular plate 309. A connecting spring 3011 is fixedly connected to the side of the hexagonal block 3010. One end of the connecting spring 3011 is fixedly connected to the inner side of the hexagonal cylinder 3016. By setting the connecting spring 3011, elastic force can be provided to maintain a tight connection between the hexagonal block 3010 and the hexagonal cylinder 3016. After the angle of the baffle 3012 is adjusted, the hexagonal cylinder 3016 is released. Under the action of the connecting spring 3011, multiple slide bars 3019 can be re-engaged in the fixing hole 3014. Through the engagement of the slide bars 3019 and the fixing hole 3014, the position of the baffle 3012 can be stabilized, making it more convenient to use.

[0038] Please see Figure 1 and Figure 5 The top of the mounting frame 209 is fixedly connected to a convex sealing strip 202, and the bottom of the mounting plate 3 is fixedly connected to a concave sealing strip 303. The top of the convex sealing strip 202 is snapped into the concave sealing strip 303. This double waterproof design improves the sealing performance between the mounting plate 3 and the mounting frame 209, preventing leakage. The surface of the baffle 3012 is coated with a tungsten carbide-PTFE composite coating 3018. By setting the tungsten carbide-PTFE composite coating 3018, frictional resistance is reduced and bubble formation is inhibited, thereby extending the... The long baffle 3012 has a long service life, reducing performance degradation caused by corrosion. Both flow pipes 201 are fixedly connected to the surface of the gas collection tank 205. The top of the gas collection tank 205 is fixedly connected to the exhaust pipe 206. By collecting the air bubbles in the flow pipe 201, the exhaust is periodically vented through the control valve 207 to avoid gas accumulation and cavitation. The exhaust pipe 206 is fixedly connected to the control valve 207 inside. The end of the exhaust pipe 206 away from the gas collection tank 205 is connected to the glass tube 208. The glass tube 208 is a transparent and visible design, allowing observation of the gas discharge status.

[0039] In this embodiment, when the angle of the baffle 3012 needs to be adjusted using the hexagonal cylinder 3016, people pull the hexagonal cylinder 3016 to disengage multiple sliding rods 3019 from the fixing hole 3014. After disengagement, people twist the hexagonal cylinder 3016. Through the limiting of the sliding rods 3019 and the circular plate 309, the hexagonal block 3010, the rotating rod 305, and the rotating block 306 can be rotated. By rotating the rotating block 306, the angle of the baffle 3012 can be adjusted. By setting two flow pipes 201, the water flow can be diverted, the flow rate of a single pipe can be balanced, and the pressure drop caused by excessive flow velocity can be avoided.

[0040] The working principle of the above embodiment is as follows: When it is necessary to adjust the angle of the baffle 3012 during use, people pull the hexagonal cylinder 3016 to disengage multiple sliding rods 3019 from the fixing hole 3014. After disengagement, people turn the hexagonal cylinder 3016. Through the limiting of the sliding rods 3019 and the circular plate 309, the hexagonal block 3010, the rotating rod 305 and the rotating block 306 can be rotated. By rotating the rotating block 306, the angle of the baffle 3012 can be adjusted. At the same time, the angle of the baffle 3012 can be adjusted and observed by the position of the engineering pointer 307 and the scale line 308. After adjustment, people release the hexagonal cylinder 3016. Under the action of the connecting spring 3011, multiple sliding rods 3019 can be re-engaged in the fixing hole 3014. Through the engagement of the sliding rods 3019 and the fixing hole 3014, the position of the baffle 3012 can be stabilized, making it more convenient to use.

[0041] 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 a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0042] Although embodiments of this application 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 principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cavitation-free water pump comprising a water pump body (1), characterized in that: The water pump body (1) is fixedly connected to a connecting pipe (2) at the input end. The connecting pipe (2) is fixedly connected to two flow pipes (201). A water valve (204) is installed inside the flow pipe (201). The two flow pipes (201) are fixedly connected to an inlet pipe (203). A mounting frame (209) is fixedly connected to the surface of the flow tube (201). A mounting plate (3) is mounted on the top of the mounting frame (209) by mounting bolts (301). A fixed shell (302) is fixedly connected to the top of the mounting plate (3). Waterproof bearings (304) are fixedly connected to both sides of the fixed shell (302). A rotating rod (305) is rotatably connected inside the two waterproof bearings (304). A pointer (307) is fixedly connected to one end of the rotating rod (305). A scale line (308) is provided on the side of the fixed shell (302). A circular plate (309) is fixedly connected to the other end of the rotating rod (305). A hexagonal block (3010) is fixedly connected to the side of the circular plate (309). A hexagonal cylinder (3016) is slidably provided on the surface of the hexagonal block (3010). A rotating block (306) is fixedly connected to the surface of the rotating rod (305). A baffle (3012) is fixedly connected to the surface of the rotating block (306).

2. A pump according to claim 1, wherein: A fixing ring (3013) is fixedly connected to the other side of the fixed shell (302), and the fixing ring (3013) is coaxial with the rotating rod (305).

3. A pump according to claim 2, wherein: The fixing ring (3013) has multiple fixing holes (3014) inside, the circular plate (309) has a sliding hole (3015) inside, a sliding rod (3019) is slidably connected inside the sliding hole (3015), one end of the sliding rod (3019) is engaged in the fixing hole (3014), and the other end of the sliding rod (3019) is fixedly connected to one end of the hexagonal cylinder (3016). A ring plate (3017) is fixedly connected to the surface of multiple sliding rods (3019).

4. A pump according to claim 3, wherein: A connecting spring (3011) is fixedly connected to the side of the hexagonal block (3010), and one end of the connecting spring (3011) is fixedly connected to the inner side of the hexagonal cylinder (3016).

5. A pump according to claim 1 wherein: The top of the mounting frame (209) is fixedly connected to a convex sealing strip (202), and the bottom of the mounting plate (3) is fixedly connected to a concave sealing strip (303). The top of the convex sealing strip (202) is snapped into the concave sealing strip (303).

6. A pump according to claim 1 wherein: The surface of the baffle (3012) is coated with a tungsten carbide-polytetrafluoroethylene composite coating (3018).

7. A pump according to claim 1 wherein: Both of the flow pipes (201) are fixedly connected to a gas collection tank (205), and an exhaust pipe (206) is fixedly connected to the top of the gas collection tank (205).

8. A pump according to claim 7, wherein: A control valve (207) is fixedly connected inside the exhaust pipe (206), and a glass tube (208) is connected to the end of the exhaust pipe (206) away from the gas collection tank (205).

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