A fastening structure of a semi-open impeller of a vertical centrifugal pump

Abstract

The utility model relates to a kind of fastening structure of vertical centrifugal pump semi-open impeller, including impeller, installation mechanism is provided to impeller inner wall, reinforcing mechanism is provided to impeller outer surface, installation mechanism includes rotating shaft, keyway is opened in rotating shaft inside, the utility model is pushed along rotating shaft by being provided with clamping block, square connecting block and connecting barrel will slide on rotating shaft at this time, clamping block in connecting barrel will first contact with guide block one at this time, then guide block one will push clamping block to the direction of being away from rotating shaft, then clamping block will be driven to slide in connecting barrel by limiting disc, by the clamping block that can be clamped between guide block one and guide block two, impeller is realized self-locking on rotating shaft, equipment damage or safety accident caused by impeller loosening, falling is avoided, protect operator and equipment safety.

Description

Technical Field

[0001] This utility model relates to a fastening structure, specifically to a fastening structure for a semi-open impeller of a vertical centrifugal pump that allows the connecting cylinder to slide on a rotating shaft, causing a pair of guide blocks to push against each other, and then the spring's rebound causes the locking block to lock between guide block one and guide block two, thus solving the problem of self-locking of the impeller on the rotating shaft. Background Technology

[0002] The fastening structure of a centrifugal pump impeller refers to the device and method for fixing the impeller to the pump shaft and ensuring its stable operation during operation. The impeller is a key component in a centrifugal pump, and its function is to convert the mechanical energy of the electric motor into the kinetic energy of the fluid to drive the fluid flow. In order to ensure that the impeller does not fall off or deform when rotating at high speed, the connection between the impeller and the pump shaft needs to be very firm.

[0003] During high-speed rotation, the impeller of a centrifugal pump may become loose on the rotating shaft due to shaking and friction, or even fall off, thus damaging the equipment. Therefore, we propose a new fastening structure for a semi-open impeller of a vertical centrifugal pump. Utility Model Content

[0004] To address the aforementioned problems, the main objective of this utility model is to provide a fastening structure for a semi-open impeller of a vertical centrifugal pump that allows the connecting cylinder to slide on the rotating shaft, causing the guide block to push against a pair of sliding rods, and then the spring's rebound to lock the locking block between guide block one and guide block two, thus solving the problem of self-locking of the impeller on the rotating shaft.

[0005] This utility model solves the above-mentioned technical problems through the following technical solution: a fastening structure for a semi-open impeller of a vertical centrifugal pump, the fastening structure of the semi-open impeller of the vertical centrifugal pump includes: an impeller, an installation mechanism provided on the inner wall of the impeller, and a reinforcement mechanism provided on the outer surface of the impeller; the installation mechanism includes a rotating shaft, a keyway is provided inside the rotating shaft, a pressure plate is keyed to the inner wall of the keyway, four connecting bolts are distributed around the circumference of the pressure plate, a connecting cylinder is fixedly connected to the side of the impeller away from the bolts, a slide rod is slidably connected to the inner wall of the connecting cylinder, a limit plate is fixedly connected to the outer surface of the slide rod, a locking block is fixedly connected to the side of the limit plate away from the slide rod, a spring is fixedly connected to the side of the limit plate away from the locking block, a guide block is fixedly connected to the outer surface of the rotating shaft, a guide block is slidably connected to the outer surface of the rotating shaft, a square connecting block is fixedly connected to the side of the connecting cylinder away from the impeller, a limit block is slidably connected to the outer surface of the connecting cylinder, and a bolt is threadedly connected to the inner wall of the limit block.

[0006] A guide block 1 is fixedly connected to the outer surface of the rotating shaft, and a guide block 2 is slidably connected to the outer surface of the rotating shaft. A locking block is set between the guide block 1 and the guide block 2. The locking block pushes the impeller along the rotating shaft. At this time, the square connecting block and the connecting cylinder will slide on the rotating shaft. At this time, the locking block inside the connecting cylinder will first contact the guide block 1, and then the guide block 1 will push the locking block away from the rotating shaft. Then the locking block will drive the slide rod to slide inside the connecting cylinder through the limit plate.

[0007] In a specific embodiment of this utility model, the outer surface of the rotating shaft is slidably connected to the inner wall of the impeller, the outer surface of the bolt is threadedly connected to the inner wall of the impeller, two slide rods are provided, the outer surface of the limiting plate is slidably connected to the inner wall of the connecting cylinder, and the end of the spring away from the limiting plate is fixedly connected to the inner wall of the connecting cylinder.

[0008] In a specific embodiment of this utility model, the inner side of the spring is sleeved with the outer surface of the slide rod, the outer surface of the first guide block is slidably connected with the outer surface of the locking block, the outer surface of the second guide block is slidably connected with the outer surface of the locking block, the inner wall of the square connecting block is slidably connected with the outer surface of the rotating shaft, the inner wall of the limiting block is in contact with the outer surface of the slide rod, and the outer surface of the third bolt is threadedly connected to the inner wall of the connecting cylinder.

[0009] In a specific embodiment of this utility model, the reinforcing mechanism includes a slot formed inside the square connecting block, and a plurality of slots are provided, with a card plate inserted into the inner wall of the slot.

[0010] The end of the card plate away from the square connecting block is rotatably connected to a connecting block one, and the side of the connecting block one that is close to each other is fixedly connected to a mounting ring one, and the inner wall of the mounting ring one is fixedly connected to the outer surface of the rotating shaft.

[0011] A second connecting block is fixedly connected to the outer surface of the card plate. A moving rod is rotatably connected to the inner wall of the second connecting block. A third connecting block is rotatably connected to the end of the moving rod away from the second connecting block.

[0012] A mounting ring two is fixedly connected to one side of the connecting blocks three that are close to each other. The outer surface of the mounting ring two is slidably connected to the outer surface of the rotating shaft. A fixing ring is fixedly connected to the side of the mounting ring two that is away from the impeller.

[0013] In a specific embodiment of this utility model, the inner wall of the fixing ring is threaded with a second bolt, and the outer surface of the second bolt is tightly connected to the outer surface of the rotating shaft.

[0014] The positive and progressive effects of this utility model are as follows: The fastening structure of the semi-open impeller of the vertical centrifugal pump provided by this utility model has the following advantages:

[0015] 1. This utility model incorporates a locking block that pushes the impeller along the rotating shaft. During this process, both the square connecting block and the connecting cylinder slide on the rotating shaft. The locking block inside the connecting cylinder first contacts the first guide block, which then pushes the locking block away from the rotating shaft. The locking block then drives the sliding rod to slide within the connecting cylinder via a limiting disc. By locking the impeller between the first and second guide blocks, a self-locking mechanism is achieved, preventing equipment damage or safety accidents caused by impeller loosening or falling off, thus protecting the safety of operators and equipment.

[0016] 2. This utility model incorporates a clamping plate that pushes the second mounting ring towards the impeller. The second mounting ring then moves the third connecting block, which in turn pushes the second connecting block via a moving rod, causing the second connecting block to rotate on the first connecting block. Simultaneously, the moving rod rotates at the connection point between the moving rod and the third connecting block. The rotation of the clamping plate secures the square connecting block, thus reinforcing the impeller and enabling it to better withstand centrifugal force, impact, and other loads, maintaining long-term stable operation and ensuring the centrifugal pump operates at high efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0018] Figure 2 This is a schematic diagram of the keyway structure of this utility model.

[0019] Figure 3 This is a schematic diagram of the connecting cylinder structure of this utility model.

[0020] Figure 4 This is a schematic diagram of the card block structure of this utility model.

[0021] Figure 5 This is a schematic diagram of the second guide block structure of this utility model.

[0022] Figure 6 This is a schematic diagram of the reinforcement mechanism of this utility model.

[0023] Figure 7 This is a schematic diagram of the motion rod structure of this utility model.

[0024] The following are the names corresponding to the reference numerals in this utility model:

[0025] 101. Impeller; 2. Mounting mechanism; 201. Rotating shaft; 202. Keyway; 203. Pressure plate; 204. Bolt 1; 205. Connecting cylinder; 206. Slide rod; 207. Limiting plate; 208. Locking block; 209. Spring; 210. Guide block 1; 211. Guide block 2; 212. Square connecting block; 213. Limiting block; 214. Bolt 3; 3. Reinforcing mechanism; 301. Locking groove; 302. Locking plate; 303. Connecting block 1; 304. Mounting ring 1; 305. Connecting block 2; 306. Moving rod; 307. Connecting block 3; 308. Mounting ring 2; 309. Fixing ring; 310. Bolt 2. Detailed Implementation

[0026] The preferred embodiments of this utility model are given below with reference to the accompanying drawings to illustrate the technical solution of this utility model in detail.

[0027] Figure 1 This is a schematic diagram of the overall structure of this utility model. Figure 2 This is a schematic diagram of the keyway structure of this utility model. Figure 3 This is a schematic diagram of the connecting cylinder structure of this utility model. Figure 4 This is a schematic diagram of the card block structure of this utility model. Figure 5 This is a schematic diagram of the second guide block structure of this utility model. Figure 6 This is a schematic diagram of the reinforcement mechanism of this utility model. Figure 7 This is a schematic diagram of the moving rod structure of this utility model, as shown below. Figure 1-7As shown: This utility model provides a novel fastening structure for a semi-open impeller of a vertical centrifugal pump, including an impeller 101. An installation mechanism 2 is provided on the inner wall of the impeller 101, and a reinforcing mechanism 3 is provided on the outer surface of the impeller 101. The installation mechanism 2 includes a rotating shaft 201, with a keyway 202 inside the rotating shaft 201. A pressure plate 203 is keyed to the inner wall of the keyway 202, connecting the pressure plate 203, impeller 101, and rotating shaft 201 via the keyway 202. Bolts 204 are threaded to the inner walls of the pressure plate 203. A connecting cylinder 205 is fixedly connected to the side of the impeller 101 away from the bolts 204. A sliding connection is made to the inner wall of the connecting cylinder 205. A sliding rod 206 has a limiting disk 207 fixedly connected to its outer surface. A connecting cylinder 205 connects the sliding rod 206, allowing it to slide within the connecting cylinder 205. A locking block 208 is fixedly connected to the side of the limiting disk 207 away from the sliding rod 206, and a spring 209 is fixedly connected to the side of the limiting disk 207 away from the locking block 208. A guide block 1 210 is fixedly connected to the outer surface of the rotating shaft 201, and a guide block 211 is slidably connected to the outer surface of the rotating shaft 201. The guide block 211 is connected to the rotating shaft 201, allowing it to slide on the rotating shaft 201. The connecting cylinder 205 is located away from the impeller 1. A square connecting block 212 is fixedly connected to one side of 01. A limit block 213 is slidably connected to the outer surface of the connecting cylinder 205. A bolt 214 is threadedly connected to the inner wall of the limit block 213. The outer surface of the rotating shaft 201 is slidably connected to the inner wall of the impeller 101. The outer surface of the bolt 204 is threadedly connected to the inner wall of the impeller 101. Two slide rods 206 are provided, which are connected to the impeller 101 through the rotating shaft 201. The impeller 101 can then slide on the rotating shaft 201. The outer surface of the limit plate 207 is slidably connected to the inner wall of the connecting cylinder 205. The end of the spring 209 away from the limit plate 207 is fixedly connected to the inner wall of the connecting cylinder 205. The inner side of the spring 209... The slide bar 206 is sleeved on the outer surface of the slide bar 206 and connected to the connecting cylinder 205 via the spring 209. The movement of the limiting plate 207 can compress the spring 209. The outer surface of the guide block 1 210 is slidably connected to the outer surface of the locking block 208. The outer surface of the guide block 211 is slidably connected to the outer surface of the locking block 208. The inner wall of the square connecting block 212 is slidably connected to the outer surface of the rotating shaft 201. The square connecting block 212 is connected to the rotating shaft 201 and can slide on the rotating shaft 201. The inner wall of the limiting block 213 is in contact with the outer surface of the slide bar 206. The outer surface of the bolt 3 214 is threadedly connected to the inner wall of the connecting cylinder 205.

[0028] The reinforcement mechanism 3 includes a slot 301 inside the square connecting block 212. Several slots 301 are provided. A card plate 302 is inserted into the inner wall of the slot 301. A connecting block 303 is rotatably connected to the end of the card plate 302 away from the square connecting block 212. The connecting block 303 is connected by the card plate 302, and the card plate 302 can rotate on the connecting block 303. A mounting ring 304 is fixedly connected to the side of the connecting blocks 303 that are close to each other. The inner wall of the mounting ring 304 is fixedly connected to the outer surface of the rotating shaft 201. A connecting block 305 is fixedly connected to the outer surface of the card plate 302. A moving rod 306 is rotatably connected to the inner wall of the connecting block 305. A connecting block 307 is rotatably connected to the end of the moving rod 306 away from the connecting block 305. The rotating shaft 201 is connected by the mounting ring 304, and the mounting ring 304 fixes the position of the card plate 302 on the rotating shaft 201.

[0029] A mounting ring 308 is fixedly connected to one side of the connecting block 307 that is close to each other. The outer surface of the mounting ring 308 is slidably connected to the outer surface of the rotating shaft 201. A fixing ring 309 is fixedly connected to the side of the mounting ring 308 that is away from the impeller 101. A bolt 310 is threadedly connected to the inner wall of the fixing ring 309. The outer surface of the bolt 310 is tightly connected to the outer surface of the rotating shaft 201. The rotating shaft 201 is connected by the mounting ring 308, and then the mounting ring 308 can slide on the rotating shaft 201.

[0030] One specific application of this embodiment is:

[0031] When the operator needs to use the equipment, align the hole on the impeller 101 with the rotating shaft 201, and then push the impeller 101 along the rotating shaft 201. At this time, the square connecting block 212 and the connecting cylinder 205 will slide on the rotating shaft 201. At this time, the locking block 208 inside the connecting cylinder 205 will first contact the guide block 210, and then the guide block 210 will push the locking block 208 away from the rotating shaft 201. Then, the locking block 208 will drive the sliding rod 206 to slide inside the connecting cylinder 205 through the limiting plate 207. At the same time, the limiting plate 207 will compress the spring 209. When the locking block 208 disengages from the guide block 210... When the spring 209 quickly returns to its original position, the locking block 208 is locked between the guide block 1 210 and the guide block 211, achieving self-locking of the impeller 101 on the rotating shaft 201. This prevents equipment damage or safety accidents caused by impeller loosening or falling off, protecting the safety of operators and equipment. At this time, the slide rod 206 can be observed to return to its original position. Then, the limiting block 213 is placed on the connecting cylinder 205, where it contacts the slide rod 206. Then, the bolt 3 214 is tightened into the limiting block 213 and the connecting cylinder 205 to restrict the position of the slide rod 206. Finally, the pressure plate 203 can be connected to the keyway 2. 02. Next, tighten bolt 204 into the pressure plate 203 and impeller 101. Then, push mounting ring 308 towards impeller 101. Mounting ring 308 will then move connecting block 307 together. Connecting block 307 will then push connecting block 305 through moving rod 306, causing connecting block 305 to rotate on connecting block 303. At the same time, moving rod 306 will also rotate at the connection between moving rod 306 and connecting block 307. When the clamping plate 302 rotates into the clamping slot 301, tighten bolt 310 into fixing ring 309 to fix the position of mounting ring 308. This achieves the effect of reinforcing the impeller 101, enabling it to better withstand centrifugal force, impact force, and other loads, maintaining long-term stable operation, and ensuring that the centrifugal pump works in a high-efficiency state. When the impeller 101 needs to be disassembled, first remove the limit block 213, remove the pressure plate 203, and push the impeller 101 downwards. At this time, the locking block 208 will move away from the rotating shaft 201 under the guidance of the first guide block 210. Then, when the locking block 208 passes the first guide block 210, the reset of the spring 209 will cause the locking block 208 to be locked on the side of the first guide block 210 away from the second guide block 211. Then, pull the impeller 101 downwards to remove it.

[0032] This invention incorporates a locking block that pushes the impeller along the rotating shaft. During this process, both the square connecting block and the connecting cylinder slide on the shaft. The locking block inside the connecting cylinder first contacts the first guide block, which then pushes the locking block away from the rotating shaft. The locking block then drives the sliding rod to slide within the connecting cylinder via a limiting disc. By locking the impeller between the first and second guide blocks, the impeller achieves self-locking on the rotating shaft, preventing equipment damage or safety accidents caused by impeller loosening or detachment, thus protecting the safety of operators and equipment.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents.

Claims

1. A fastening structure for a semi-open impeller of a vertical centrifugal pump, characterized in that: The fastening structure of the semi-open impeller of the vertical centrifugal pump includes: an impeller (101), an installation mechanism (2) provided on the inner wall of the impeller (101), and a reinforcement mechanism (3) provided on the outer surface of the impeller (101); the installation mechanism (2) includes a rotating shaft (201), a keyway (202) is provided inside the rotating shaft (201), a pressure plate (203) is keyed to the inner wall of the keyway (202), four connecting bolts (204) are distributed around the circumference of the pressure plate (203), a connecting cylinder (205) is fixedly connected to the side of the impeller (101) away from the bolts (204), and a sliding rod (206) is slidably connected to the inner wall of the connecting cylinder (205). A limiting plate (207) is fixedly connected to the outer surface. A locking block (208) is fixedly connected to the side of the limiting plate (207) away from the slide rod (206). A spring (209) is fixedly connected to the side of the limiting plate (207) away from the locking block (208). A guide block one (210) is fixedly connected to the outer surface of the rotating shaft (201). A guide block two (211) is slidably connected to the outer surface of the rotating shaft (201). A square connecting block (212) is fixedly connected to the side of the connecting cylinder (205) away from the impeller (101). A limiting block (213) is slidably connected to the outer surface of the connecting cylinder (205). A bolt three (214) is threadedly connected to the inner wall of the limiting block (213). A guide block 1 (210) is fixedly connected to the outer surface of the rotating shaft (201), and a guide block 2 (211) is slidably connected to the outer surface of the rotating shaft (201). A locking block (208) is provided between the guide block 1 (210) and the guide block 2 (211). The locking block (208) pushes the impeller (101) along the rotating shaft (201). At this time, the square connecting block and the connecting cylinder will slide on the rotating shaft. At this time, the locking block in the connecting cylinder will first contact the guide block 1, and then the guide block 1 will push the locking block away from the rotating shaft. Then the locking block will drive the slide rod to slide in the connecting cylinder through the limiting plate.

2. The fastening structure for the semi-open impeller of the vertical centrifugal pump according to claim 1, characterized in that: The outer surface of the rotating shaft (201) is slidably connected to the inner wall of the impeller (101), the outer surface of the bolt (204) is threadedly connected to the inner wall of the impeller (101), two slide rods (206) are provided, the outer surface of the limiting plate (207) is slidably connected to the inner wall of the connecting cylinder (205), and the end of the spring (209) away from the limiting plate (207) is fixedly connected to the inner wall of the connecting cylinder (205).

3. The fastening structure for the semi-open impeller of the vertical centrifugal pump according to claim 2, characterized in that: The inner side of the spring (209) is sleeved with the outer surface of the slide rod (206), the outer surface of the first guide block (210) is slidably connected with the outer surface of the locking block (208), the outer surface of the second guide block (211) is slidably connected with the outer surface of the locking block (208), the inner wall of the square connecting block (212) is slidably connected with the outer surface of the rotating shaft (201), the inner wall of the limiting block (213) is in contact with the outer surface of the slide rod (206), and the outer surface of the third bolt (214) is threadedly connected with the inner wall of the connecting cylinder (205).

4. The fastening structure for the semi-open impeller of the vertical centrifugal pump according to claim 1, characterized in that: The reinforcement mechanism (3) includes a slot (301) opened inside the square connecting block (212), and a number of slots (301) are provided. A card plate (302) is inserted into the inner wall of the slot (301). The end of the card plate (302) away from the square connecting block (212) is rotatably connected to a connecting block one (303). The side of the connecting blocks one (303) that is close to each other is fixedly connected to a mounting ring one (304). The inner wall of the mounting ring one (304) is fixedly connected to the outer surface of the rotating shaft (201). A connecting block two (305) is fixedly connected to the outer surface of the card plate (302), and a moving rod (306) is rotatably connected to the inner wall of the connecting block two (305). A connecting block three (307) is rotatably connected to the end of the moving rod (306) away from the connecting block two (305). A mounting ring 2 (308) is fixedly connected to one side of the connecting block 3 (307) that is close to each other. The outer surface of the mounting ring 2 (308) is slidably connected to the outer surface of the rotating shaft (201). A fixing ring (309) is fixedly connected to the side of the mounting ring 2 (308) that is away from the impeller (101).

5. The fastening structure for the semi-open impeller of the vertical centrifugal pump according to claim 4, characterized in that: The inner wall of the fixing ring (309) is threaded with bolt two (310), and the outer surface of bolt two (310) is tightly connected to the outer surface of the rotating shaft (201).

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