CN214366877U

CN214366877U - Streamlined lockwasher nut

Info

Publication number: CN214366877U
Application number: CN202120098026.XU
Authority: CN
Inventors: 王斌; 颜安; 陈茂军; 姚燕超; 程泽凡; 颜宁; 朱晓倩
Original assignee: Anhui Fluid Pump Systems Co ltd
Current assignee: Anhui Fluid Pump Systems Co ltd
Priority date: 2021-01-14
Filing date: 2021-01-14
Publication date: 2021-10-08
Anticipated expiration: 2031-01-14

Abstract

The utility model discloses a streamlined locking impeller nut, including impeller nut body, the inside threaded connection of impeller nut body has the pump shaft, the screw thread centre bore has been seted up to the inside of pump shaft, the inside threaded connection of impeller nut body has hexagonal cylinder head screw, the right side of hexagonal cylinder head screw runs through to the inside of screw thread centre bore, the rear end of impeller nut body forms according to the design of impeller streamline, impeller nut body uses with the pump shaft cooperation, the front end of impeller nut body designs into the hexagonal type, uses with the spanner cooperation. The utility model provides an impeller of present most centrifugal pumps on the market all be thin tooth cap nut and bullet pad carry out threaded connection to the impeller that leads to the centrifugal pump can appear becoming flexible the phenomenon that drops appearing special conditions, produces sound friction, has damaged pump internal rotation part, seriously endangers the problem of the safe operation of water-feeding pump, has reached the effect of locking ability reinforcing.

Description

Streamlined lockwasher nut

Technical Field

The utility model relates to a nut technical field specifically is a streamlined locking impeller nut.

Background

The centrifugal machine is a machine for separating solid particles from liquid or components in a mixture of liquid and liquid by using centrifugal force, and is mainly used for separating solid particles from liquid in suspension, or separating two liquids which have different densities and are not mutually soluble in emulsion, and can also be used for discharging liquid in wet solid.

A streamline anti-loosening impeller nut is needed when an impeller of a centrifugal pump is fixed, but most impellers of centrifugal pumps on the market are in threaded connection with a fine-tooth cap nut 9, a flat gasket 10 and an elastic gasket 11, as shown in figure 1, so that the impeller of the centrifugal pump can loosen and fall off under special conditions, dynamic and static friction is generated, rotating parts in the pump are damaged, and the safe operation of a water supply pump is seriously damaged. Chinese utility model patent publication No. CN210715250U discloses a device for preventing lead to impeller nut not hard up because of impeller reversal, including impeller and pump shaft, the impeller passes through the fastening of impeller nut at the pump shaft tip, be equipped with locking pad between impeller and the impeller nut, be equipped with the chimb on the locking pad. The device mainly prevents the nut from loosening through the locking pad, but not prevents the impeller from loosening.

SUMMERY OF THE UTILITY MODEL

For solving the problem that provides in the above-mentioned background art, the utility model aims to provide a streamlined locking impeller nut possesses the advantage of locking ability reinforcing, and the impeller of having solved most centrifugal pumps on the current market all is that thin tooth cap nut and bullet pad carry out threaded connection to the phenomenon that can appear becoming flexible and drop in the special case appearing in the impeller that leads to the centrifugal pump, produces sound friction, has damaged pump internal rotation part, seriously endangers the problem of the safe operation of water-feeding pump.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a streamlined locking impeller nut, includes the impeller nut body, the impeller nut body includes front end and rear end, the inside threaded connection of rear end has the pump shaft, the inside of pump shaft has seted up the screw thread centre bore along the axial, the inside threaded connection of front end has hexagonal socket head cap screw, hexagonal socket head cap screw's free end and screw thread centre bore screw-thread fit.

As the utility model discloses it is preferred, the rear end of impeller nut body forms according to the design of impeller streamline, impeller nut body uses with the pump shaft cooperation.

As the utility model discloses preferred, the front end is the hexagon recess with the conformal matching of hexagonal socket head cap screw.

As the utility model discloses preferred, the inside fixedly connected with coarse thread of impeller nut body, the inboard of coarse thread and the surperficial threaded connection of pump shaft.

As the utility model discloses preferred, the cross section of impeller rear end bottom is circular.

As the utility model discloses it is preferred, the inside of screw thread centre bore is provided with fine screw thread, fine screw thread and hexagonal cylinder head screw cooperation are used.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. the utility model is used by matching the impeller nut body, the pump shaft, the thread center hole and the hexagonal socket head cap screw, when in use, the wrench card is clamped into the hexagonal groove, the impeller nut body is rotated, the impeller nut body is screwed to the top of the pump shaft through the coarse thread, the hexagonal socket head cap screw is put into the impeller nut body, the hexagonal socket head cap screw is screwed through the fine thread, the impeller nut body is doubly fixed and fastened, the phenomenon that the impeller loosens and falls off under special conditions is prevented, the problem that most of the centrifugal pumps on the market are in threaded connection through the fine-thread cap nut and the elastic cushion, thereby the impeller of the centrifugal pump loosens and falls off under special conditions, dynamic and static friction is generated, rotating parts in the pump are damaged, and the safe operation of the water feeding pump is seriously damaged is solved, the streamlined anti-loosening impeller nut has the advantage of enhanced anti-loosening capacity, is convenient for a user to use, and improves the practicability of the centrifugal pump impeller.

2. The utility model discloses a setting on impeller streamline limit can produce good drainage effect at the water pump entry, has improved water pump efficiency.

3. The utility model discloses a setting of hexagon recess, the front end that can the convenient to use person pass through spanner locking impeller nut body has improved user's comfort level.

4. The utility model discloses a setting of thick tooth screw thread can improve the intensity of pump shaft and impeller nut body, has easy dismounting and not fragile effect, has improved the life of part.

5. The utility model discloses a cross section is the circular shape setting, can make the area of contact of impeller nut body and pump shaft more stable, has improved the stability of impeller nut body and pump shaft.

6. The utility model discloses a setting of fine screw thread can effectively restrain impeller nut body reversal, and spare part does not produce not hard up in making the pump.

Drawings

FIG. 1 is a schematic view of a prior art impeller nut and pump shaft assembly;

FIG. 2 is a schematic structural view of the present invention;

FIG. 3 is a schematic view of the streamline edge of the impeller of the present invention;

fig. 4 is a left side view of the impeller nut body of the present invention;

fig. 5 is a perspective view of the impeller nut body of the present invention.

In the figure: 1. an impeller nut body; 2. a pump shaft; 3. a threaded central bore; 4. a hexagonal socket head screw; 5. the streamline edge of the impeller; 6. a hexagonal groove; 7. coarse thread; 8. fine screw thread 9, fine screw cap nut 10 and flat gasket; 11. and (6) elastic cushion.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 2 to 5, the utility model provides a pair of streamlined locking impeller nut, including impeller nut body 1, the inside threaded connection of impeller nut body 1 has pump shaft 2, and threaded centre bore 3 has been seted up to the inside of pump shaft 2, and the inside threaded connection of impeller nut body 1 has hexagonal socket head cap screw 4, and hexagonal socket head cap screw 4's right side runs through to the inside of threaded centre bore 3.

Referring to fig. 2, the rear end of the impeller nut body 1 is provided with an impeller streamline edge 5, and the impeller nut body 1 is used in cooperation with the pump shaft 2.

As a technical optimization scheme of the utility model, through the setting of impeller streamline limit 5, can produce good drainage effect at the water pump entry, improved water pump efficiency.

Referring to fig. 2, the front end of the impeller nut body 1 is provided with a hexagonal groove 6, and the hexagonal groove 6 is used in cooperation with a wrench.

As a technical optimization scheme of the utility model, through the setting of hexagon recess 6, can the person of facilitating the use pass through the front end of spanner locking impeller nut body 1, improved user's comfort level.

Referring to fig. 1, a coarse thread 7 is fixedly connected to the inside of the impeller nut body 1, and the inside of the coarse thread 7 is threadedly coupled to the surface of the pump shaft 2.

As a technical optimization scheme of the utility model, through the setting of thick tooth screw thread 7, can improve the intensity of pump shaft 2 and impeller nut body 1, have easy dismounting and not fragile effect, improved the life of part.

Referring to fig. 4, the cross section of the bottom of the rear end of the impeller nut body 1 is circular, and the impeller nut body 1 is used in cooperation with the pump shaft 2.

As a technical optimization scheme of the utility model, be circular shape setting through the cross section, can make impeller nut body 1 more stable with the area of contact of pump shaft 2, improved impeller nut body 1 and pump shaft 2's stability.

Referring to fig. 1, the threaded central hole 3 is internally provided with a fine thread 8, and the fine thread 8 is matched with the hexagonal socket head cap screw 4 for use.

As a technical optimization scheme of the utility model, through the setting of fine screw thread 8, can effectively restrain 1 reversal of impeller nut body, spare part does not produce not hard up in making the pump.

The utility model discloses a theory of operation and use flow: during the use, go into the inside of hexagon recess 6 with the spanner card, rotate impeller nut body 1, screw impeller nut body 1 to the top of pump shaft 2 through thick thread 7, put into impeller nut body 1's inside hexagonal socket head cap screw 4, hexagonal socket head cap screw 4 screws through thin screw thread 8, carries out dual fixed and fastening to impeller nut body 1, prevents that the impeller phenomenon that not hard up droing can appear appearing in the special circumstances.

In summary, the following steps: the streamline anti-loose impeller nut is used by matching an impeller nut body 1, a pump shaft 2, a thread center hole 3 and a hexagonal socket head cap screw 4, when in use, a spanner is clamped into the inside of a hexagonal groove 6, the impeller nut body 1 is rotated, the impeller nut body 1 is screwed to the top of the pump shaft 2 through a coarse thread 7, the hexagonal socket head cap screw 4 is placed into the impeller nut body 1, the hexagonal socket head cap screw 4 is screwed through a fine thread 8, the impeller nut body 1 is doubly fixed and fastened, the phenomenon that the impeller loosens and falls off under special conditions is prevented, the problem that most impellers of centrifugal pumps on the market are in threaded connection through a fine-thread cap nut and a spring washer is solved, the phenomenon that the impeller loosens and falls off under special conditions is caused, dynamic and static friction is generated, and pump components are damaged, seriously jeopardizing the safe operation of the water supply pump.

It should be noted that, in this document, terms such as "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a streamlined locking impeller nut, includes impeller nut body (1), its characterized in that: the impeller nut body (1) comprises a front end and a rear end, a pump shaft (2) is connected with the inner thread of the rear end, a threaded center hole (3) is formed in the pump shaft (2) along the axial direction, a hexagonal socket head cap screw (4) is connected with the inner thread of the front end, and the free end of the hexagonal socket head cap screw (4) is in threaded fit with the threaded center hole (3).

2. The streamlined lockimpeller nut of claim 1, wherein: the rear end is set as an impeller streamline edge (5).

3. The streamlined lockimpeller nut of claim 1, wherein: the front end is a hexagonal groove (6) which is matched with the hexagonal socket head cap screw (4) in a conformal manner.

4. The streamlined lockimpeller nut of claim 1, wherein: the impeller nut is characterized in that a coarse thread (7) is fixedly connected to the interior of the impeller nut body (1), and the inner side of the coarse thread (7) is in threaded connection with the surface of the pump shaft (2).

5. The streamlined lockimpeller nut of claim 1, wherein: the cross section of the bottom of the rear end of the impeller is circular.

6. The streamlined lockimpeller nut of claim 1, wherein: the thread center hole (3) is internally provided with a fine thread (8), and the fine thread (8) is matched with the hexagonal socket head cap screw (4) for use.