CN211398025U - Connection structure for improving connection firmness of pump shaft and impeller of water feed pump - Google Patents
Connection structure for improving connection firmness of pump shaft and impeller of water feed pump Download PDFInfo
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- CN211398025U CN211398025U CN201922391658.0U CN201922391658U CN211398025U CN 211398025 U CN211398025 U CN 211398025U CN 201922391658 U CN201922391658 U CN 201922391658U CN 211398025 U CN211398025 U CN 211398025U
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Abstract
The utility model relates to the technical field of water pump structures, in particular to a connecting structure for improving the connection firmness of a pump shaft and an impeller of a water feed pump, which comprises a pump shaft, wherein a shaft sleeve is arranged on the left side of the pump shaft and positioned at the center of the pump shaft, the impeller is arranged on the shaft sleeve, an impeller sealing cover is arranged at the left end of the pump shaft, fixing screws are arranged on the left side of the impeller sealing cover and positioned right above and right below the center of the impeller sealing cover, circular grooves are correspondingly arranged on the impeller sealing cover and positioned at the positions of the fixing screws, screw holes are correspondingly arranged at the left end of the pump shaft and positioned at the positions of the fixing screws, the problems that the prior water feed pump locks the impeller on the pump shaft through a compression nut in threaded connection at the front end of the pump shaft and a positioning key on the pump shaft, and the nut and the screw thread can be corroded by water after, therefore, the impeller cannot be locked, the connection between the impeller and the pump shaft is loose, and the water feed pump cannot normally operate.
Description
Technical Field
The utility model relates to a water pump technical field specifically is an improve connection structure of water-feeding pump shaft and impeller firm in connection nature.
Background
The water pump is a machine for conveying liquid or pressurizing liquid, and it can transfer the mechanical energy of prime mover or other external energy to the liquid to increase the energy of liquid, and is mainly used for conveying liquid including water, oil, acid-base liquid, emulsion, suspoemulsion and liquid metal, etc.
At present, the water feed pump locks the impeller on the pump shaft through the compression nut in threaded connection with the pump shaft at the front end of the pump shaft and the positioning key on the pump shaft, and after the water feed pump runs for a long time, the nut and the thread can be corroded by water, so that the impeller can not be locked, the connection between the impeller and the pump shaft is not flexible, and the water feed pump can not normally run, so that the problem of improving the connection firmness of the pump shaft and the impeller of the water feed pump is solved.
Disclosure of Invention
An object of the utility model is to provide an improve connection structure of feed pump shaft and impeller firm in connection to solve the problem that provides among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
a connection structure for improving connection firmness of a pump shaft and an impeller of a water feed pump comprises the pump shaft, wherein a shaft sleeve is arranged on the left side of the pump shaft and positioned at the center of the pump shaft, the impeller is arranged on the shaft sleeve, an impeller sealing cover is arranged at the left end of the pump shaft, fixing screws are arranged on the left side of the impeller sealing cover and positioned right above and under the center of the impeller sealing cover, circular grooves are correspondingly formed in the positions of the fixing screws on the impeller sealing cover, screw holes are correspondingly formed in the positions of the left end of the pump shaft and the fixing screws, an annular plate is fixedly connected to the impeller sealing cover, a left through groove is formed in the front side and the back side of the annular plate and positioned right above the impeller sealing cover, a connecting screw rod is arranged in the left through groove, a right through groove is correspondingly formed in the position of the connecting screw rod on the impeller, and locking nuts are arranged on the connecting screw rod and positioned on two sides, the sealing device is characterized in that grooves are correspondingly formed in the left through groove and the right through groove and at the positions of the locking nuts, sealing plugs are fixedly connected to the positions, far away from the pump shafts, of the grooves and the circular grooves, and sealing gaskets are fixedly connected to the positions, far away from the sealing plugs, of the connecting screw rods.
Preferably, the connecting screw rod and the fixing screw are both made of maraging steel, the fixing screw and the screw hole are both in threaded connection.
Preferably, the shape of the shaft sleeve is matched with the shape of the pump shaft.
Preferably, the sealing plug and the groove and the sealing plug and the circular groove are connected in a sliding manner, and the sealing plug is made of silicon rubber.
Preferably, the material of the impeller cover and the annular plate is made of stainless steel.
Preferably, the connecting screw rod, the locking nut and the sealing plug are provided in plurality.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model discloses in, through setting up set screw, connecting screw, lock nut, the sealing plug, fix the impeller on the impeller closing cap through connecting screw, fix impeller and impeller closing cap on the pump shaft through set screw, with impeller fixed connection on the pump shaft, sealing plug and seal ring can seal up lock nut and set screw, prevent to lead to the impeller can't be locked on the pump shaft because water corrodes lock nut and set screw, the gland nut who has solved present water-feeding pump through at pump shaft front end threaded connection and the epaxial navigation key of pump come the impeller locking on the pump shaft, long-time operation back, nut and screw thread can be corroded by water, thereby can't lock the impeller, lead to being connected between impeller and the pump shaft not hard up, the unable normal operating problem of water-feeding pump.
2. The utility model discloses in, through setting up set screw, connecting screw, lock nut fixes the impeller through set screw and connecting screw and lock nut, need not set up screw thread and navigation key on the pump shaft, less the processing step of pump shaft, improved the machining efficiency of pump shaft, reduced the processing cost.
3. The utility model discloses in, make connecting screw and set screw by maraging steel through the setting, connecting screw and set screw made by maraging steel have extremely strong structural strength, can bear the internal stress that the impeller produced when rotating to ensure that set screw and connecting screw can not break off.
Drawings
FIG. 1 is a front sectional view of the present invention;
FIG. 2 is an enlarged view of the point A in FIG. 1 according to the present invention;
FIG. 3 is an enlarged view of the point B in FIG. 1 according to the present invention;
fig. 4 is an enlarged view of the point C in fig. 1 according to the present invention.
In the figure: 1-pump shaft, 2-shaft sleeve, 3-impeller, 4-impeller sealing cover, 5-fixing screw, 6-circular groove, 7-screw hole, 8-annular plate, 9-left through groove, 10-connecting screw rod, 11-right through groove, 12-locking nut, 13-groove, 14-sealing plug and 15-sealing washer.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention based on the embodiments of the present invention.
Referring to fig. 1-4, the present invention provides a technical solution:
a connection structure for improving connection firmness of a pump shaft and an impeller of a water feed pump comprises a pump shaft 1, a shaft sleeve 2 is arranged on the left side of the center of the pump shaft 1 on the pump shaft 1, the shape of the shaft sleeve 2 is matched with that of the pump shaft 1, the impeller 3 is arranged on the shaft sleeve 2, an impeller sealing cover 4 is arranged at the left end of the pump shaft 1, materials of the impeller sealing cover 4 and an annular plate 8 are both made of stainless steel, fixing screws 5 are arranged on the left side of the impeller sealing cover 4 and right above and right below the center of the impeller sealing cover 4, a circular groove 6 is correspondingly arranged on the impeller sealing cover 4 and at the position of the fixing screw 5, a screw hole 7 is correspondingly arranged at the left end of the pump shaft 1 and at the position of the fixing screw 5, the annular plate 8 is fixedly connected onto the impeller sealing cover 4, a left through groove 9 is arranged on the annular plate 8 and right above and below the impeller sealing cover 4, a left through groove 9 is respectively, the connecting screw rod 10 and the fixing screw 5 are both made of maraging steel, the fixing screw 5 and the screw hole 7 are both in threaded connection, the connecting screw rod 10 and the fixing screw 5 made of maraging steel have high strength and can bear the internal stress generated when the impeller 3 rotates, a right through groove 11 is correspondingly formed in the position of the connecting screw rod 10 on the impeller 3, locking nuts 12 are respectively arranged on two sides of the connecting screw rod 10 and positioned at the center of the connecting screw rod 10, grooves 13 are correspondingly formed in the left through groove 9 and the right through groove 11 and positioned at the positions of the locking nuts 12, a position far away from the pump shaft 1 is fixedly connected with a sealing plug 14 in the groove 13 and the circular groove 6, the connecting modes of the sealing plug 14 and the groove 13 and the connecting mode of the sealing plug 14 and the circular groove 6 are both in sliding connection, the sealing plug 14 is made of silicon rubber, and the silicon rubber has strong water resistance, can keep the original state in aqueous for a long time, connecting screw 10 and lock nut 12 and sealing plug 14 all are provided with a plurality ofly, and connecting screw 10 is last and keep away from sealing plug 14 position department fixedly connected with seal ring 15.
The utility model discloses work flow: when in use, the shaft sleeve 2 is assembled on the pump shaft 1, the impeller sealing cover 4 and the impeller 3 are fixedly connected together through the connecting screw rod 10 and the locking nut 12, the impeller 3 is assembled on the shaft sleeve 2, the screw hole 7 on the pump shaft 1 is aligned with the circular groove 6 on the impeller sealing cover 4, the fixing screw 5 is screwed into the screw hole 7, so that the impeller 3 is fixed on the pump shaft 1, the sealing plug 14 is plugged into the groove 13 and the circular groove 6, finally the impeller 3 and the pump shaft 1 are installed in the water supply pump, when in operation, the sealing plug 14 and the sealing washer 15 can prevent water from entering the groove 13 and the circular groove 6, the locking nut 12 and the fixing screw 5 can not be corroded by water, the impeller 3 can be locked on the pump shaft 1 by the locking nut 12 and the fixing screw 5, meanwhile, the sealing plug 14 made of silicon rubber has stronger water resistance, the sealing plug can not deform when being contacted with water for a, the sealing plug 14 is still able to seal the recess 13 and the circular groove 6.
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 (6)
1. The utility model provides an improve connection structure of feed pump shaft and impeller fastness to connection, includes pump shaft (1), its characterized in that: a shaft sleeve (2) is arranged on the left side of the pump shaft (1) and located at the center of the pump shaft (1), an impeller (3) is arranged on the shaft sleeve (2), an impeller sealing cover (4) is arranged at the left end of the pump shaft (1), fixing screws (5) are arranged on the left side of the impeller sealing cover (4) and located right above and right below the center of the impeller sealing cover (4), circular grooves (6) are correspondingly formed in the positions of the fixing screws (5) on the impeller sealing cover (4), screw holes (7) are correspondingly formed in the positions of the left end of the pump shaft (1) and the fixing screws (5), an annular plate (8) is fixedly connected onto the impeller sealing cover (4), a left through groove (9) is formed in the positions of the annular plate (8) and located right above, right below, front and back of the impeller sealing cover (4), and a connecting screw rod (10) is arranged in the left through groove (9), the impeller (3) is provided with a right through groove (11) at the position corresponding to the connecting screw rod (10), locking nuts (12) are arranged on the connecting screw rod (10) and on the two sides of the center of the connecting screw rod (10), grooves (13) are formed in the left through groove (9) and the right through groove (11) and in the position corresponding to the locking nuts (12), sealing plugs (14) are fixedly connected to the positions of the grooves (13) and the circular grooves (6) and far away from the pump shaft (1), and sealing gaskets (15) are fixedly connected to the positions of the sealing plugs (14) on the connecting screw rod (10).
2. The connecting structure for improving the connecting firmness of the pump shaft and the impeller of the water feed pump according to claim 1, is characterized in that: the connecting screw rod (10) and the fixing screw (5) are both made of maraging steel, the fixing screw (5) and the screw hole (7) are both in threaded connection, and the connecting screw rod (10) is connected with the locking nut (12) in a threaded manner.
3. The connecting structure for improving the connecting firmness of the pump shaft and the impeller of the water feed pump according to claim 1, is characterized in that: the shape of the shaft sleeve (2) is matched with that of the pump shaft (1).
4. The connecting structure for improving the connecting firmness of the pump shaft and the impeller of the water feed pump according to claim 1, is characterized in that: the sealing plug (14) and the groove (13) and the sealing plug (14) and the circular groove (6) are connected in a sliding mode, and the sealing plug (14) is made of silicon rubber.
5. The connecting structure for improving the connecting firmness of the pump shaft and the impeller of the water feed pump according to claim 1, is characterized in that: the impeller cover (4) and the annular plate (8) are made of stainless steel.
6. The connecting structure for improving the connecting firmness of the pump shaft and the impeller of the water feed pump according to claim 1, is characterized in that: the connecting screw rods (10), the locking nuts (12) and the sealing plugs (14) are all provided in plurality.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922391658.0U CN211398025U (en) | 2019-12-27 | 2019-12-27 | Connection structure for improving connection firmness of pump shaft and impeller of water feed pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922391658.0U CN211398025U (en) | 2019-12-27 | 2019-12-27 | Connection structure for improving connection firmness of pump shaft and impeller of water feed pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211398025U true CN211398025U (en) | 2020-09-01 |
Family
ID=72210988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922391658.0U Active CN211398025U (en) | 2019-12-27 | 2019-12-27 | Connection structure for improving connection firmness of pump shaft and impeller of water feed pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211398025U (en) |
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2019
- 2019-12-27 CN CN201922391658.0U patent/CN211398025U/en active Active
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