Single-piece impeller detachable structure axial flow pump

Abstract

The utility model discloses a single piece impeller detachable structure's axial flow pump, the utility model relates to axial flow pump technical field. Single piece impeller detachable structure's axial flow pump includes the shell, the inside of shell is provided with the flow guide subassembly, is used for guiding water flow to discharge, the flow guide subassembly includes: drive assembly, including the oil blanket fixed mounting in the shell one end, the inside of oil blanket is inserted and is installed with transmission shaft, the end of transmission shaft is inserted and is installed with the spline shaft, the end of spline shaft is fixedly installed with the mounting post, the outside of mounting post is embedded and is installed with the mounting plate, the outside fixed mounting of mounting plate has the blade, after unhooking the limit cover, can push the spline shaft and move along the axial movement, and the mounting post of spline shaft end fixed will move along with it synchronously, drives the mounting plate and the blade of embedding of mounting post outside and moves out the shell inside together, need not to disassemble the whole structure of shell, can let impeller part expose completely outside, facilitates the operator to check.

Description

Technical Field

[0001] This utility model relates to the field of axial flow pump technology, specifically to an axial flow pump with a detachable single impeller structure. Background Technology

[0002] Axial flow pumps rely on the rotation of the impeller to generate axial thrust, which drives the fluid to flow axially. The fluid flow direction is parallel to the pump shaft. They can efficiently transport large amounts of liquid at lower pressures, with a flow rate much greater than that of centrifugal pumps. The head is usually lower, and they are mainly used for long-distance liquid transportation or high-flow circulation scenarios.

[0003] The existing utility model patent with publication number CN220816035U discloses an axial flow pump impeller structure, including a mounting block. The inner wall of the mounting block has a connecting groove, and a rotating shaft is mounted on the inner wall of the connecting groove. A retaining block is welded to the outer wall of the rotating shaft. A fixing rod is screwed to the inner wall of the mounting block, and a wheel is welded to the bottom end of the mounting block. The outer wall of the wheel is coated with an anti-corrosion coating, and blades are screwed to the outer wall of the wheel. This axial flow pump impeller structure, through the anti-corrosion coating, provides corrosion protection to the impeller exterior through the epoxy resin paint, preventing rust and corrosion on the impeller surface after prolonged use, thereby extending its service life.

[0004] The impeller structure described above uses screws to fix the blades. During use, the screws fixing the blades may loosen, causing the blades to fall off and affecting the safety of the impeller rotation. Furthermore, in existing axial flow pumps, the impeller is located inside the casing, and the casing is mostly a pipe structure, which makes it inconvenient to perform regular maintenance on the impeller. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides an axial flow pump with a detachable single-blade impeller structure, which solves the problems of inconvenient maintenance and blade detachment.

[0006] To achieve the above objectives, this utility model provides the following technical solution: An axial flow pump with a detachable single-blade impeller includes a housing, and a flow guiding component is provided inside the housing for guiding water flow out. The flow guiding component includes: The transmission assembly includes an oil seal fixedly installed at one end of the housing, a transmission shaft is inserted inside the oil seal, a spline shaft is inserted at the end of the transmission shaft, a mounting post is fixedly installed at the end of the spline shaft, a mounting plate is fitted on the outside of the mounting post, a blade is fixedly installed on the outside of the mounting plate, a limiting ring is sleeved on the front end of the mounting post, and a limiting cover is installed at the bottom of the mounting post. The water inlet assembly is used to enlarge the water inlet and intercept some large debris.

[0007] Preferably, the water inlet assembly includes a water inlet cover fixedly installed at the end of the outer shell, a limiting plate is movably installed at the top of the water inlet cover, a support column is inserted through the center of the limiting plate, and a collar is sleeved on the outside of the support column.

[0008] Preferably, the drive shaft and the oil seal are rotatably connected, the drive shaft and the spline shaft are slidably connected, the outer side of the mounting column is provided with a groove that fits into the mounting plate, and the mounting plate and the blade are connected by bolts.

[0009] Preferably, the blade is mounted in an "X" shape on the outside of the mounting post via the mounting plate. The upper and lower ends of the mounting post are provided with threaded structures, and the upper and lower ends of the mounting plate are provided with threads that match the threaded structures at the upper and lower ends of the mounting post. The limiting ring and the limiting cover are connected to the mounting post via threaded structures.

[0010] Preferably, the water inlet cover is fixedly connected to the outer shell by bolts and nuts, the limiting plate is fixedly connected to the water inlet cover by threads, the surface of the limiting plate is provided with a spoke structure, and the center of the limiting plate is provided with a columnar structure that fits into the support column.

[0011] Preferably, the end of the support column is provided with a disc structure, the disc structure at the end of the support column is in contact with the limiting cover, the collar is located between the disc at the end of the support column and the limiting disc, and the end of the support column is not in contact with the bottom end of the central cylindrical recess of the limiting disc.

[0012] Beneficial effects This invention provides an axial flow pump with a detachable single-blade impeller structure. Compared with the prior art, it has the following advantages: (1) The axial flow pump with a detachable single impeller structure can be removed by rotating the limiting plate and the water inlet cover through a threaded connection. This allows for the easy removal of the support column and collar at the center of the limiting plate, thus freeing the positional restriction on the internal impeller structure. Secondly, the device utilizes the sliding connection characteristics of the drive shaft and the spline shaft. After removing the limiting cover, the spline shaft can be pushed to move axially, and the mounting column fixed at the end of the spline shaft will move synchronously with it, causing the mounting plate and blades fitted on the outside of the mounting column to move out of the housing. Without disassembling the entire housing structure, the impeller components can be fully exposed to the outside, facilitating inspection by operators.

[0013] (2) In this axial flow pump with a detachable single-blade impeller, the blades are connected to the mounting plate by bolts, and the ends of the bolts are embedded inside the inner side of the mounting plate to avoid the risk of loosening caused by exposed bolts. The mounting plate and the mounting column adopt an interlocking structure. The outer side of the mounting column is provided with a groove that matches the mounting plate. After the mounting plate is embedded in the groove, it is further fixed by the threaded structure matching the upper and lower ends of the mounting column and the mounting plate, which enhances the connection stability between the mounting plate and the mounting column. At the same time, the limiting ring sleeved at the front end of the mounting column and the limiting cover installed at the bottom are connected to the mounting column by threads, which limits the mounting plate from the upper and lower ends to prevent the mounting plate from moving axially on the mounting column. In addition, the thread tightening direction is the same as the rotation direction of the drive shaft. When the blades rotate, they will drive the mounting plate, limiting ring and limiting cover to follow the movement, making the threaded connection tighter and achieving a self-tightening effect. The cooperation of multiple structures effectively avoids the problem of blades falling off during operation. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the cross-sectional structure of the outer shell of this utility model; Figure 3 This is a schematic diagram of the collar installation structure of this utility model; Figure 4 This is a schematic diagram of the blade mounting structure of this utility model; In the diagram: 1. Outer shell; 2. Flow guide assembly; 21. Transmission assembly; 211. Oil seal; 212. Drive shaft; 213. Splined shaft; 214. Mounting post; 215. Mounting plate; 216. Blade; 217. Limiting ring; 218. Limiting cover; 22. Water inlet assembly; 221. Water inlet cover; 222. Limiting disc; 223. Support post; 224. Collar. 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 1-4This utility model provides a technical solution: an axial flow pump with a detachable single-blade impeller structure includes a housing 1. A flow guiding assembly 2 is provided inside the housing 1 to guide water flow. The flow guiding assembly 2 includes a transmission assembly 21, comprising an oil seal 211 fixedly installed at one end of the housing 1. A transmission shaft 212 is inserted inside the oil seal 211. A splined shaft 213 is inserted at the end of the transmission shaft 212. A mounting post 214 is fixedly installed at the end of the splined shaft 213. A mounting plate 215 is fitted onto the outside of the mounting post 214. Blades 216 are fixedly installed on the outside of the mounting plate 215. A limiting ring 217 is sleeved on the front end of the mounting post 214. A limit cover 218 is installed at the bottom of 214. The drive shaft 212 and the oil seal 211 are rotatably connected. The drive shaft 212 and the spline shaft 213 are slidably connected. The outer side of the mounting post 214 is provided with a groove that fits into the mounting plate 215. The mounting plate 215 and the blade 216 are connected by bolts. The blade 216 is installed on the outer side of the mounting post 214 in an "X" shape through the mounting plate 215. The upper and lower ends of the mounting post 214 are provided with threaded structures. The upper and lower ends of the mounting plate 215 are provided with threads that match the threaded structures at the upper and lower ends of the mounting post 214. The limit ring 217 and the limit cover 218 are connected to the mounting post 214 through threaded structures.

[0017] Specifically, the oil seal 211 allows the drive shaft 212 to rotate while ensuring sealing. The drive shaft 212 and the spline shaft 213 are connected by a spline through-hole. The spline shaft 213 can adjust the position of the end mounting post 214 by sliding. The threads at both ends of the mounting post 214 engage with the threads at both ends of the mounting plate 215. The position between the mounting plate 215 and the mounting post 214 is restricted by the limiting ring 217 and the limiting cover 218. The thread tightening direction is the same as the rotation direction of the drive shaft 212, and self-tightening is achieved by rotation. The plate-like structure on the inner side of the mounting plate 215 and the blade 216 are connected to the mounting plate 215 by bolts on the inner side of the mounting plate 215. The ends of the bolts are embedded in the inner side of the mounting plate 215. Thus, after the mounting plate 215 and the mounting post 214 are in contact, the position of the bolts is restricted by the mounting post 214.

[0018] The water inlet assembly 22 is used to enlarge the water inlet and intercept some large-volume debris. The water inlet assembly 22 includes a water inlet cover 221 fixedly installed at the end of the outer shell 1. A limiting plate 222 is movably installed at the top of the water inlet cover 221. A support column 223 is inserted through the center of the limiting plate 222. A collar 224 is sleeved on the outside of the support column 223. The water inlet cover 221 is fixedly connected to the outer shell 1 by bolts and nuts. The limiting plate 222 is fixedly connected to the water inlet cover 221 by threads. The surface of the limiting plate 222 is provided with a spoke structure. A columnar structure that fits into the support column 223 is provided at the center of the limiting plate 222. A disc structure is provided at the end of the support column 223. The disc structure at the end of the support column 223 contacts the limiting cover 218. The collar 224 is located between the disc structure at the end of the support column 223 and the limiting plate 222. The end of the support column 223 does not contact the bottom end of the central columnar recess of the limiting plate 222.

[0019] Specifically, the spoke structure of the limiting disc 222 can prevent some debris from entering the interior of the outer casing 1. A brass sleeve with a bore diameter matching the outer diameter of the support column 223 is fitted into the central recess of the limiting disc 222. The support column 223 and the collar 224 are made of nylon. The position of the limiting cover 218 is restricted by the disc at the end of the support column 223 in conjunction with the limiting disc 222, ensuring that the spline shaft 213 is always inserted inside the drive shaft 212 and resisting the reaction force generated by the water flow on the mounting column 214 when the blade 216 rotates. Furthermore, all content not described in detail in this specification is prior art known to those skilled in the art.

[0020] During operation, the drive shaft 211 is connected to the motor via a coupling. The motor drives the drive shaft 211 to rotate, causing the blades 216 to rotate and guiding water flow to be discharged through the side opening of the outer casing. For maintenance, first remove the bolts and nuts connecting the outer casing 1 and the water inlet cover 221, and remove the water inlet cover 221 from the end of the outer casing 1. Next, rotate the limiting plate 222, which is threaded to the water inlet cover 221, and remove it. Then, remove the support column 223 and collar 224 at the center of the limiting plate 222. At this point, the limiting cover 218 at the bottom of the mounting column 214 is no longer restricted by the support column 223. Rotate the limiting cover 218 and remove it from the mounting column 214. Since the drive shaft 212 and the splined shaft 213 form a sliding connection, the push... The moving spline shaft 213 can drive the mounting post 214 fixed at the end to slide axially, so that the mounting plate 215 and the fixed blade 216 fitted on the outside of the mounting post 214 can be moved out of the housing 1 together; then the limiting ring 217 at the front end of the mounting post 214 can be rotated to remove it from the mounting post 214, so that the mounting plate 215 can be taken out from the fitting groove on the outside of the mounting post 214, and then the bolts connecting the blade 216 and the mounting plate 215 can be removed to complete the blade replacement; after replacement, the assembly is carried out in reverse order, the spline shaft 213 is pushed to reset the impeller part, and the limiting ring 217, limiting cover 218, collar 224, support post 223, limiting plate 222 and water inlet cover 221 are installed in sequence to complete the maintenance.

[0021] 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.

[0022] 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. An axial flow pump with a detachable single-blade impeller, characterized in that: The system includes a housing (1), and a flow guiding component (2) is provided inside the housing (1) for guiding water flow out. The flow guiding component (2) includes: The transmission assembly (21) includes an oil seal (211) fixedly installed at one end of the housing (1). A transmission shaft (212) is inserted inside the oil seal (211). A spline shaft (213) is inserted at the end of the transmission shaft (212). A mounting post (214) is fixedly installed at the end of the spline shaft (213). A mounting plate (215) is fitted on the outside of the mounting post (214). A blade (216) is fixedly installed on the outside of the mounting plate (215). A limiting ring (217) is sleeved on the front end of the mounting post (214). A limiting cover (218) is installed at the bottom of the mounting post (214). The water inlet assembly (22) is used to enlarge the water inlet and intercept some large-volume debris.

2. The axial flow pump with a detachable single-blade impeller structure according to claim 1, characterized in that: The water inlet assembly (22) includes a water inlet cover (221) fixedly installed at the end of the outer shell (1). A limiting plate (222) is movably installed at the top of the water inlet cover (221). A support column (223) is inserted through the center of the limiting plate (222). A collar (224) is sleeved on the outside of the support column (223).

3. The axial flow pump with a detachable single-blade impeller structure according to claim 1, characterized in that: The drive shaft (212) is rotatably connected to the oil seal (211), and the drive shaft (212) is slidably connected to the spline shaft (213). The outer side of the mounting column (214) is provided with a groove that fits into the mounting plate (215). The mounting plate (215) and the blade (216) are connected by bolts.

4. An axial flow pump with a detachable single-blade impeller structure according to claim 1, characterized in that: The blade (216) is installed in an "X" shape on the outside of the mounting post (214) via the mounting plate (215). The upper and lower ends of the mounting post (214) are provided with threaded structures, and the upper and lower ends of the mounting plate (215) are provided with threads that match the threaded structures at the upper and lower ends of the mounting post (214). The limiting ring (217) and the limiting cover (218) are connected to the mounting post (214) via threaded structures.

5. An axial flow pump with a detachable single-blade impeller structure according to claim 2, characterized in that: The water inlet cover (221) is fixedly connected to the outer shell (1) by bolts and nuts. The limiting plate (222) is fixedly connected to the water inlet cover (221) by threads. The surface of the limiting plate (222) is provided with a spoke structure. The center of the limiting plate (222) is provided with a columnar structure that fits into the support column (223).

6. An axial flow pump with a detachable single-blade impeller structure according to claim 2, characterized in that: The end of the support column (223) is provided with a disc structure. The disc structure at the end of the support column (223) is in contact with the limiting cover (218). The collar (224) is located between the disc at the end of the support column (223) and the limiting disk (222). The end of the support column (223) is not in contact with the bottom end of the central cylindrical recess of the limiting disk (222).

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