Chain type regulating impeller for blade angle adjustment

Abstract

The utility model discloses a chain type adjusting impeller for blade angle adjustment, including lower casing, the top fixed connection of lower casing is connected with upper casing, and a plurality of rotating columns are sealingly rotatably connected between upper casing and lower casing, the inner wall bottom of lower casing is equipped with a plurality of support components, and the support component includes fixed plate, the upper surface fixed connection of fixed plate has bearing seat, and rotating column rotatably connects in bearing seat through bearing, and one end of rotating column is fixedly connected with first worm wheel. The utility model discloses the design of chain type transmission assembly makes first worm in a plurality of support components can rotate simultaneously, and under the action of gear transmission assembly, makes driving gear and driven gear on a plurality of first worm rotate simultaneously, and chain type transmission assembly and gear transmission assembly cooperate, two kinds of synchronous transmission mode, guarantee the consistency of a plurality of rotating columns in the adjusting impeller rotate simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of impeller technology, and in particular to a chain-type impeller for adjusting blade angle. Background Technology

[0002] Currently, in axial flow machinery such as axial flow pumps, axial flow fans, or water turbines, the blades are mounted on adjustable impellers. By adjusting the blade angle, the flow direction and speed of the fluid passing through the impeller can be changed, thereby optimizing energy conversion efficiency.

[0003] Among them, a search revealed that Chinese patent CN116950927A discloses a chain-type adjusting impeller for quickly adjusting the blade angle. In the application of the above-mentioned patent's technical solution, the blade angle adjustment relying solely on chain and sprocket transmission has a certain deviation, resulting in poor performance of the adjusting impeller. Therefore, in order to better realize the blade angle adjustment function, promote technological progress in the industry, and improve the core technology competitiveness, this application proposes a new implementation scheme that differs from the existing adjusting impeller transmission structure. Utility Model Content

[0004] The purpose of this invention is to solve the problem that the blade angle adjustment of existing adjusting impellers, which rely solely on chain and sprocket transmission, has a certain deviation, and proposes a chain-type adjusting impeller for blade angle adjustment.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A chain-type adjusting impeller for blade angle adjustment includes a lower housing, an upper housing fixedly connected to the top of the lower housing, and a plurality of rotating columns rotatably connected between the upper and lower housings in a sealed manner. The bottom of the inner wall of the lower housing is provided with a plurality of support assemblies, each including a fixed plate. A bearing seat is fixedly connected to the upper surface of the fixed plate, and the rotating columns are rotatably connected to the bearing seat via bearings. A first worm gear is fixedly connected to one end of each rotating column. A first worm is rotatably connected to the upper surface of the fixed plate, and the first worm meshes with the first worm wheel. A sprocket is fixedly sleeved at the top of each worm. A chain drive assembly is provided above the upper housing, and the chain drive assembly cooperates with the sprockets.

[0007] Furthermore, a support shell is fixedly connected to the upper surface of the upper housing, and a drive assembly is provided above the support shell. The drive assembly includes a mounting plate, which is fixedly connected to the upper surface of the support shell. A micro motor is fixedly connected to the upper surface of the mounting plate, and a second worm gear is fixedly connected to the output end of the micro motor.

[0008] Furthermore, in one of the support components, a second worm gear is fixedly connected to the top of the first worm, and the second worm meshes with one side of the second worm gear.

[0009] Furthermore, a wireless control module is fixedly connected to the upper surface of the support shell, and a battery is fixedly connected to the upper surface of the support shell. The battery is electrically connected to the wireless control module and the micro motor, and the wireless control module is electrically connected to the micro motor.

[0010] Furthermore, the upper surface of the lower housing is provided with a through-hole, and a connecting cylinder is integrally formed inside the through-hole. A top cover is fixedly connected to the top of the upper housing, and a bottom cover is fixedly connected to the bottom of the lower housing.

[0011] Furthermore, the fixing plate is fixedly connected to the bottom of the inner wall of the lower housing.

[0012] Furthermore, the chain drive assembly includes multiple connecting shafts, all of which are rotatably connected to the surface of the upper housing. The top ends of the multiple connecting shafts and the top ends of the first worm gears in the multiple support assemblies are all fixedly connected to sprockets, and the multiple sprockets are connected by the same chain.

[0013] Furthermore, the bottom of the lower housing is provided with a gear transmission assembly, which includes a driving gear. The driving gear is rotatably connected to the outer surface of the connecting cylinder through a bearing. The bottom end of the first worm in the multiple support assemblies is fixedly connected with a driven gear, and the multiple driven gears mesh with the driving gear.

[0014] The beneficial effects of this utility model are as follows:

[0015] 1. Through the design of the chain drive assembly, the first worm in multiple support assemblies can rotate simultaneously. Under the action of the gear drive assembly, the driving gear and the driven gears on multiple first worms rotate simultaneously. The chain drive assembly and the gear drive assembly cooperate to ensure the consistency of the simultaneous rotation of multiple rotating columns in the regulating impeller.

[0016] 2. By combining the first worm wheel and the first worm in the support assembly with the second worm and the second worm wheel in the drive assembly, the rotating column in the adjusting impeller can be doubly locked after two-stage transmission, ensuring the fixation effect of the blade angle adjustment on the adjusting impeller.

[0017] 3. The design of the top and bottom covers can seal and protect the various structures in the regulating impeller, preventing fluid from entering the impeller during use and enhancing its practicality. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of a chain-type adjusting impeller for blade angle adjustment proposed in this utility model;

[0019] Figure 2 This is a half-sectional schematic diagram of a chain-type adjusting impeller for blade angle adjustment proposed in this utility model;

[0020] Figure 3 This is a partially enlarged structural diagram of a chain-type adjusting impeller for blade angle adjustment proposed in this utility model;

[0021] Figure 4 This is a top view of the upper housing structure of a chain-type adjusting impeller for blade angle adjustment proposed in this utility model.

[0022] Figure 5 This is a three-dimensional structural diagram of the top of the support shell of a chain-type adjusting impeller for blade angle adjustment proposed in this utility model.

[0023] Figure 6 This is a schematic diagram of the blade installation and usage state of a chain-type adjusting impeller for blade angle adjustment proposed in this utility model.

[0024] Figure 7 This is a bottom view of the upper shell structure of Embodiment 2 of this utility model;

[0025] Figure 8 This is a schematic diagram of the leaf half-section structure of Embodiment 2 of this utility model.

[0026] In the diagram: 1. Lower housing; 2. Upper housing; 3. Rotating column; 4. Support assembly; 401. Fixing plate; 402. First worm gear; 403. First worm wheel; 404. Bearing seat; 5. Chain transmission assembly; 501. Connecting shaft; 502. Sprocket; 503. Chain; 6. Gear transmission assembly; 601. Driving gear; 602. Driven gear; 7. Support shell; 8. Drive assembly; 801. Mounting plate; 802. Second worm gear; 803. Second worm wheel; 804. Micro motor; 9. Wireless control module; 10. Battery; 11. Connecting cylinder; 12. Top cover; 13. Bottom cover. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0028] Example 1

[0029] Reference Figures 1-6 A chain-type adjusting impeller for blade angle adjustment includes a lower housing 1, an opening on the upper surface of the lower housing 1, a connecting cylinder 11 integrally formed inside the opening, an upper housing 2 fixedly connected to the top of the lower housing 1 by bolts, and a plurality of rotating columns 3 sealingly rotatably connected between the upper housing 2 and the lower housing 1.

[0030] The bottom of the inner wall of the lower housing 1 is provided with multiple support components 4. The support components 4 include a fixing plate 401. The fixing plate 401 is fixed to the bottom of the inner wall of the lower housing 1 by bolts. The upper surface of the fixing plate 401 is fixed with a bearing seat 404 by bolts, and the rotating column 3 is rotatably connected to the bearing seat 404 through a bearing.

[0031] One end of the rotating column 3 is keyed to a first worm gear 403, and the upper surface of the fixed plate 401 is rotatably connected to a first worm 402 via a bearing. The first worm 402 meshes with the first worm gear 403, and the top of the first worm 402 is inserted through and inserted into the upper part of the upper housing 2.

[0032] A chain drive assembly 5 is provided above the upper housing 2. The chain drive assembly 5 includes multiple connecting shafts 501. The multiple connecting shafts 501 are rotatably connected to the surface of the upper housing 2 through embedded bearings. The top ends of the multiple connecting shafts 501 and the top ends of the first worm gear 402 in the multiple support assemblies 4 are all fixedly sleeved with sprockets 502. The multiple sprockets 502 are connected by the same chain 503. The gap between the sprockets 502 and the chain 503 is less than 0.3mm. The tolerance grade is H7 / h6 fit.

[0033] The upper surface of the upper housing 2 is fixed with a support housing 7 by bolts, and a drive assembly 8 is provided above the support housing 7. The drive assembly 8 includes a mounting plate 801, which is fixed to the upper surface of the support housing 7 by bolts. A micro motor 804 is fixed to the upper surface of the mounting plate 801 by bolts, and a second worm gear 802 is welded to the output end of the micro motor 804.

[0034] In one of the support components 4, the top end of the first worm 402 is inserted through the top of the support shell 7 and is keyed to a second worm wheel 803. The second worm 802 meshes with one side of the second worm wheel 803, and the micro motor 804 drives the first worm 402 to rotate.

[0035] The design combining two sets of worm gears and worms ensures that the rotating column 3 in the adjusting impeller will not rotate arbitrarily after two-stage transmission. The design combining two sets of worm gears and worms can double lock the rotating column 3 and its blades, ensuring the fixed effect of the blade angle adjustment on the adjusting impeller.

[0036] The upper surface of the support shell 7 is fixed with a wireless control module 9 by bolts. The wireless control module 9 contains a main control chip of model STM32F103C8T6, a 2.4G radio frequency wireless module of model NRF24L01, and a motor drive chip of model TB6612.

[0037] This allows operators to connect the wireless control module 9 to an external terminal device via the 2.4G radio frequency wireless module. The external terminal device can send commands, which are received via the 2.4G radio frequency wireless module. After the main control chip parses the commands, it can drive the micro motor 804 to adjust the angle of the rotating column 3 in the adjusting impeller.

[0038] Among them, the micro motor 804 can be a micro geared motor of model DS-16RP050 with a self-locking function, or other models of motors with self-locking function can be selected to ensure the adaptability of power and function. The battery 10 is attached to the upper surface of the support shell 7. The battery 10 is electrically connected to the wireless control module 9 and the micro motor 804 through the RS485 / TTL interface, and the wireless control module 9 is electrically connected to the micro motor 804.

[0039] The top of the support shell 7 is fixed with a top cover 12 by bolts, which covers the battery 10, the wireless control module 9 and the micro motor 804.

[0040] The bottom of the lower housing 1 is fixed with a bottom cover 13 by bolts. The design of the top cover 12 and the bottom cover 13 can seal and protect the various structures in the regulating impeller, preventing fluid from entering the inside of the regulating impeller during use, thus enhancing the practicality of the regulating impeller.

[0041] The lower housing 1, upper housing 2, support housing 7, top cover 12, and bottom cover 13 can be made of corrosion-resistant 304 stainless steel, and the multiple housings are sealed and connected by nitrile rubber rings. The multiple worms, worm wheels, and gears are all made of alloy steel, such as carburized steel or surface-hardened steel, and all adopt the tolerance fit of H7 / h6.

[0042] The working principle of this embodiment is as follows: When in use, the operator first assembles the adjusting impeller on the axial flow machine. The blades are fixedly connected to one end of the rotating column 3 by bolts. Then, the connecting cylinder 11 is keyed to the rotating shaft of the motor of the axial flow machine. In this way, the assembly of the adjusting impeller is completed.

[0043] When using axial flow machinery, the operator transmits signals to the wireless control module 9 via an external terminal device. Upon receiving the signal, the wireless control module 9 controls the micro motor 804 to start and stop. In the drive assembly 8, when the micro motor 804 starts, the second worm 802 and the second worm wheel 803 work together to drive the first worm 402 of one of the support assemblies 4 to rotate. In the chain transmission assembly 5, the sprocket 502 and the chain 503 work together to make the first worm 402 in multiple support assemblies 4 rotate simultaneously. When the first worm 402 rotates, it drives the first worm wheel 403 and its rotating column 3 to rotate. The blades on the rotating column 3 rotate accordingly. In this way, the angle of the blades in the axial flow machinery is adjusted, which can change the flow direction and speed of the fluid when passing through the adjusting impeller, thereby optimizing the energy conversion efficiency.

[0044] Example 2

[0045] refer to Figure 7-8 The bottom of the lower housing 1 is provided with a gear transmission assembly 6, which includes a drive gear 601. The drive gear 601 is rotatably connected to the outer surface of the connecting cylinder 11 through a bearing. The bottom ends of the first worm gear 402 in the multiple support assemblies 4 respectively protrude from the bottom of the lower housing 1 and are fixedly sleeved with driven gears 602. The multiple driven gears 602 are all meshed with the drive gear 601.

[0046] The first worm gear 402 in the multiple support components 4 can rotate simultaneously. Under the action of the gear transmission component 6, the driving gear 601 and the driven gears 602 on the multiple first worm gears 402 rotate simultaneously. The chain transmission component 5 and the gear transmission component 6 cooperate to ensure the consistency of the simultaneous rotation of the multiple rotating columns 3 in the regulating impeller.

[0047] A Type-C charging port is installed on the outer wall of the top cover 12. The Type-C charging port is connected to the battery 10. A waterproof plug is then filled into the Type-C charging port. At this time, when the battery 10 is out of power, the operator can charge the battery 10 through the Type-C charging port.

[0048] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A chain-type adjusting impeller for blade angle adjustment, comprising a lower housing (1), characterized in that, The top of the lower housing (1) is fixedly connected to the upper housing (2). Multiple rotating columns (3) are rotatably connected between the upper housing (2) and the lower housing (1). Multiple support components (4) are provided at the bottom of the inner wall of the lower housing (1). The support components (4) include a fixed plate (401). A bearing seat (404) is fixedly connected to the upper surface of the fixed plate (401). The rotating columns (3) are rotatably connected to the bearing seat (404) through the bearing. A first worm wheel (403) is fixedly connected to one end of the rotating column (3). A first worm (402) is rotatably connected to the upper surface of the fixed plate (401). The first worm (402) meshes with the first worm wheel (403). A sprocket (502) is fixedly sleeved on the top of the first worm (402). A chain drive assembly (5) is provided above the upper housing (2). The chain drive assembly (5) and the sprocket (502) cooperate.

2. The chain-type adjusting impeller for blade angle adjustment according to claim 1, characterized in that, The upper surface of the upper housing (2) is fixedly connected to a support shell (7), and a drive assembly (8) is provided above the support shell (7). The drive assembly (8) includes a mounting plate (801), which is fixedly connected to the upper surface of the support shell (7). A micro motor (804) is fixedly connected to the upper surface of the mounting plate (801), and a second worm gear (802) is fixedly connected to the output end of the micro motor (804).

3. The chain-type adjusting impeller for blade angle adjustment according to claim 2, characterized in that, In one of the support components (4), the top end of the first worm (402) is fixedly connected to a second worm wheel (803), and the second worm (802) meshes with one side of the second worm wheel (803).

4. The chain-type adjusting impeller for blade angle adjustment according to claim 3, characterized in that, A wireless control module (9) is fixedly connected to the upper surface of the support shell (7), and a battery (10) is fixedly connected to the upper surface of the support shell (7). The battery (10) is electrically connected to the wireless control module (9) and the micro motor (804), and the wireless control module (9) is electrically connected to the micro motor (804).

5. The chain-type adjusting impeller for blade angle adjustment according to claim 1, characterized in that, The upper surface of the lower housing (1) is provided with an opening, and a connecting cylinder (11) is integrally formed inside the opening. The top of the upper housing (2) is fixedly connected with a top cover (12), and the bottom of the lower housing (1) is fixedly connected with a bottom cover (13).

6. The chain-type adjusting impeller for blade angle adjustment according to claim 1, characterized in that, The fixing plate (401) is fixedly connected to the bottom of the inner wall of the lower housing (1).

7. A chain-type adjusting impeller for blade angle adjustment according to claim 1, characterized in that, The chain drive assembly (5) includes multiple connecting shafts (501), all of which are rotatably connected to the surface of the upper housing (2). The top ends of the multiple connecting shafts (501) and the top ends of the first worm gears (402) in the multiple support assemblies (4) are fixedly connected to sprockets (502), and the multiple sprockets (502) are provided with the same chain (503).

8. A chain-type adjusting impeller for blade angle adjustment according to claim 1, characterized in that, The bottom of the lower housing (1) is provided with a gear transmission assembly (6), which includes a drive gear (601). The drive gear (601) is rotatably connected to the outer surface of the connecting cylinder (11) through a bearing. The bottom end of the first worm (402) in the multiple support assemblies (4) is fixedly connected with a driven gear (602), and the multiple driven gears (602) mesh with the drive gear (601).

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