Impeller capable of preventing reverse rotation

Abstract

The utility model belongs to the technical field of pumps, and particularly relates to a reverse-rotation-preventing impeller which comprises a through hole formed in the center of the impeller, a fixing head matched with a driving shaft is screwed on the top of the impeller, and the bottom of the through hole of the impeller is fixedly connected with an additional part through threads. The insection orientation of the limiting teeth of the additionally-installed component is consistent with the movement orientation of the impeller, and a limiting component used for preventing reverse rotation is installed outside the additionally-installed component; a ring body corresponding to the impeller through hole is arranged at the middle end of a supporting rod of the limiting component, one side of the supporting rod is connected with a braking claw for preventing reverse rotation through a rotating shaft, and an elastic piece enabling the braking claw to be attached to the limiting teeth all the time is fixed to the supporting rod. According to the utility model, through the arrangement of the additionally-mounted part and the limiting part, the additionally-mounted part and the impeller are assembled together, so that the additionally-mounted part and the impeller rotate together, and when the additionally-mounted part synchronously rotates reversely along with the impeller, the elastic sheet pushes the brake claw to be clamped into the clamping groove to prevent the limiting teeth from rotating reversely, so that the reverse rotation of the impeller can be directly limited.

Description

Technical Field

[0001] This utility model relates to the field of pump technology, specifically to an impeller that prevents reverse rotation. Background Technology

[0002] The impeller is one of the core components of a pump. It increases the energy of the fluid by rotating, thereby realizing the transport of the fluid. When the impeller rotates at high speed in the pump body, it applies centrifugal force or axial force to the surrounding liquid, so that the liquid gains kinetic energy and pressure energy, and is then transported to the designated location.

[0003] The existing patent (publication number CN220396080U) and an impeller for preventing synchronous motor reversal have an arc-shaped blade panel. Therefore, when the synchronous motor is rotating in reverse, the impeller is subject to greater resistance and cannot rotate, thereby enabling the synchronous motor to rotate in the forward direction and thus achieving the function of preventing reverse rotation. However, the increased resistance cannot directly limit the impeller's reversal. The impeller can still reverse at a slow speed. At the same time, this resistance will increase the power of the motor adapted to the impeller, which may cause the motor to burn out. In addition, this structure cannot be installed on existing impellers, and its compatibility is poor.

[0004] Therefore, we propose an impeller to prevent reverse rotation, which is beneficial for directly limiting the reverse rotation of the impeller, and also facilitates the addition of the impeller to existing structures, thereby improving the adaptability of the reverse rotation structure. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides an impeller that prevents reverse rotation, so as to solve the problems existing in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an impeller for preventing reverse rotation, comprising an impeller, wherein a through hole is provided in the center of the impeller, a fixing head adapted to a drive shaft is screwed onto the top of the impeller, and an additional component is fixedly connected to the bottom of the through hole of the impeller by a thread, wherein the tooth pattern of the limiting teeth of the additional component is aligned with the movement direction of the impeller, and a limiting component for preventing reverse rotation is installed on the outside of the additional component;

[0007] The support rod of the limiting component has a ring body at the middle end corresponding to the impeller through hole. One side of the support rod is connected to a brake pawl to prevent reverse rotation via a rotating shaft. A spring piece is fixed on the support rod to ensure that the brake pawl always fits against the limiting tooth. Fixing components for installation are provided at both ends of the support rod.

[0008] Furthermore: the fixing component includes a screw and a screw sleeve, and an opening is made in the housing that accommodates the impeller for screwing the screw, and the screw passes through the housing that accommodates the impeller and is screwed into the screw sleeve at the end of the corresponding support rod.

[0009] Furthermore: the fixing component includes an extension stud and a clamping rod, the clamping rod and the extension stud being threaded together, the clamping rods on both sides being rotated to extend the combined length of the clamping rods and extension studs on both sides, and causing them to abut against the two ends of the housing housing that accommodates the impeller.

[0010] Furthermore, the middle part of the added component is provided with a threaded ring column that is threaded through the bottom of the impeller, and the added component rotates synchronously with the impeller.

[0011] Furthermore, a groove is formed between the teeth of the limiting tooth. When the added component rotates in reverse synchronously with the impeller, the spring pushes the brake claw into the groove to prevent the limiting tooth from rotating in reverse.

[0012] Compared with the prior art, the technical effects and advantages of this utility model are as follows:

[0013] 1) The impeller of this utility model that prevents reverse rotation is provided by adding a component and a limiting component. By assembling the added component and the impeller together, the added component and the impeller rotate together. When the added component reverses synchronously with the impeller, the spring pushes the brake claw into the slot to prevent the limiting tooth from reversing, which is beneficial to directly limit the reverse rotation of the impeller.

[0014] 2) The anti-reverse impeller of this utility model, through the setting of threaded ring column and fixing component, is achieved by tapping the through hole of the impeller, and then screwing the threaded ring column of the added component into the through hole of the impeller, or by opening a notch in the through hole and adding a protrusion to the added component to fit the notch, so that the impeller and the added component are nested and locked together. The ring body of the limiting component corresponds to the through hole of the impeller to prevent the ring body from contacting the drive shaft of the impeller. The limiting component is installed by accommodating the opening of the impeller housing, or by extending the limiting component to press against both ends inside the housing of the impeller. This is beneficial for adding to existing structures and improves the adaptability of adding reverse reversing structures. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the impeller structure of this utility model;

[0016] Figure 2 This is a side view of the impeller structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the added component structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the combined structure of the mounting component and the limiting component of this utility model;

[0019] Figure 5 This is a schematic diagram of the structure of the limiting component of this utility model, embodiment 1;

[0020] Figure 6 This is a schematic diagram of the structure of embodiment 2 of the limiting component of this utility model.

[0021] The attached figures are labeled as follows: 1. Impeller; 2. Fixed head; 3. Added component; 31. Restricting tooth; 32. Threaded ring; 4. Restricting component; 41. Support rod; 42. Ring body; 43. Brake pawl; 44. Spring piece; 45. Fixed component; 451. Screw; 452. Screw sleeve; 453. Extension stud; 454. Clamping rod. Detailed Implementation

[0022] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. The structures involved in this utility model are not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0023] Example:

[0024] Please see Figure 1-6 This utility model provides a technical solution: an impeller to prevent reverse rotation, including an impeller 1, a through hole in the center of the impeller 1, a fixing head 2 adapted to a drive shaft screwed onto the top of the impeller 1, and an additional component 3 threadedly connected to the bottom of the through hole of the impeller 1.

[0025] The middle part of the mounting component 3 is provided with a threaded ring 32 that is connected to the bottom thread of the impeller 1. The mounting component 3 rotates synchronously with the impeller 1. By tapping the through hole of the impeller 1, the threaded ring 32 of the mounting component 3 is screwed into the through hole of the impeller 1. Glue or tape is added between the threads to ensure the fixation of the threads.

[0026] Alternatively, a notch can be made in the through hole, and a protrusion can be added to the mounting component 3 to fit the notch, so that the impeller 1 and the mounting component 3 can be nested and engaged. This method is more stable than the threaded method, but it requires damage to part of the structure of the impeller 1 and may not be compatible with impellers 1 of different types of pumps.

[0027] The tooth pattern of the limiting tooth 31 of the added component 3 is aligned with the movement direction of the impeller 1, and a limiting component 4 for preventing reverse rotation is installed on the outside of the added component 3;

[0028] The middle end of the support rod 41 of the limiting component 4 is provided with a ring 42 corresponding to the through hole of the impeller 1. One side of the support rod 41 is connected to a brake pawl 43 to prevent reverse rotation via a rotating shaft. A spring piece 44 is fixed on the support rod 41 to ensure that the brake pawl 43 always fits against the limiting tooth 31. The spring piece 44 is an elastic metal sheet. Fixing components 45 for installation are provided at both ends of the support rod 41.

[0029] Because a groove is formed between the teeth of the limiting tooth 31, when the added component 3 rotates in reverse synchronously with the impeller 1, the spring plate 44 pushes the brake pawl 43 into the groove to prevent the limiting tooth 31 from rotating in reverse.

[0030] The fixing component 45 includes a screw 451 and a screw sleeve 452. The outer shell accommodating the impeller 1 has an opening for screwing the screw 451. The screw 451 passes through the outer shell accommodating the impeller 1 and is screwed into the screw sleeve 452 at the end of the corresponding support rod 41.

[0031] This method requires an additional opening in the outer casing of the impeller 1, located at both ends of the support rod 41. This necessitates ensuring the sealing of the opening. This can be achieved by tapping the opening and threading the screw 451 with adhesive tape through the thread to improve the sealing.

[0032] Example 2

[0033] The fixing component 45 includes an extension stud 453 and a clamping rod 454. The clamping rod 454 and the extension stud 453 are threaded together. The clamping rods 454 on both sides are rotated to extend the combined length of the clamping rods 454 and the extension stud 453 on both sides, and make them press against the two ends of the housing containing the impeller 1.

[0034] The combined length of the clamping rod 454 and the extension stud 453 can be adjusted by rotating the clamping rod 454, so that the two ends of the support rod 41 are pressed against the two ends of the inner shell of the impeller 1, thereby ensuring the fixation of the support rod 41. This method is suitable for the shell of the impeller 1 with a relatively regular shape, such as a disc shape or a cylinder shape.

[0035] The working principle of this utility model embodiment is as follows: by tapping the through hole of the impeller 1, the threaded ring post 32 of the added component 3 is screwed into the through hole of the impeller 1, the ring body 42 of the limiting component 4 corresponds to the through hole of the impeller 1, the ring body 42 is nested through the drive shaft of the impeller 1, and the outer shell accommodating the impeller 1 is opened for screwing the screw 451. The screw 451 passes through the outer shell accommodating the impeller 1 and is screwed into the end of the support rod 41 with the threaded sleeve 452, thereby fixing the support rod 41 of the limiting component 4.

[0036] A groove is formed between the teeth of the limiting tooth 31 in the added component 3. When the added component 3 rotates in reverse synchronously with the impeller 1, the spring 44 pushes the brake pawl 43 into the groove to prevent the limiting tooth 31 from rotating in reverse.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description. Therefore, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this utility model, and no reference numerals in the claims should be construed as limiting the scope of the claims.

[0038] 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. A reverse-preventing impeller, comprising an impeller (1) with a through hole in the center, a fixing head (2) of a matched driving shaft being screwed on the top of the impeller (1), characterized in that: The through hole bottom of the impeller (1) is fixedly connected with an added part (3), the limit tooth (31) of the added part (3) is consistent with the movement direction of the impeller (1), and the added part (3) is externally provided with a limiting part (4) for preventing reverse rotation; The middle end of the supporting rod (41) of the limiting part (4) is provided with a ring body (42) corresponding to the through hole of the impeller (1), one side of the supporting rod (41) is connected with a reverse prevention brake claw (43) through a rotating shaft, the supporting rod (41) is fixedly provided with an elastic sheet (44) for always abutting the brake claw (43) to the limit tooth (31), and both ends of the supporting rod (41) are provided with fixing parts (45) for adding.

2. A reverse-proof impeller according to claim 1, wherein: The fixing part (45) comprises a screw rod (451) and a screw sleeve (452), and the shell containing the impeller (1) is provided with a hole for screwing the screw rod (451), and the screw rod (451) penetrates the shell containing the impeller (1) to screw the screw sleeve (452) at the end of the supporting rod (41).

3. A reverse-proof impeller according to claim 1, wherein: The fixing part (45) comprises an extension stud (453) and a pressing rod (454), the pressing rod (454) and the extension stud (453) are threadedly connected, the pressing rod (454) on the two sides is rotated to extend the combined length of the pressing rod (454) and the extension stud (453) on the two sides, and the two sides are tightly pressed to the inside of the shell containing the impeller (1) at both ends.

4. A reverse-proof impeller according to claim 1, wherein: The middle part of the added part (3) is provided with a threaded ring column (32) threadedly connected with the through bottom of the impeller (1), and the added part (3) rotates synchronously with the impeller (1).

5. A reverse-proof impeller according to claim 1, wherein: The limit tooth (31) is formed between the threads, and when the added part (3) reverses synchronously with the impeller (1), the elastic sheet (44) pushes the brake claw (43) to be clamped into the clamping groove to prevent the limit tooth (31) from reversing.

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