CN211648599U - Centrifugal pump rotor impeller detaching mechanism - Google Patents

Abstract

The utility model provides a centrifugal pump rotor impeller disassembly body, the dismantlement sleeve that has the end wall including one end, the screw rod, the clamp plate, lock nut and two at least locating pins, wherein, it is greater than the diameter of impeller to dismantle telescopic internal diameter, the locating pin is worn to establish on dismantling telescopic lateral wall, and the locating pin is greater than the thickness of impeller apart from the inboard distance of end wall, be equipped with the first through-hole that the rotor shaft that supplies the rotor passed on the end wall, one side and the end wall connection of screw rod, the opposite side is worn to establish in the clamp plate, the clamp plate sets up with the end wall relatively, the lock nut screw thread closes on the screw rod soon, and be located deviating from of clamp. The utility model discloses be difficult for causing the impeller to damage and the security is high when dismantling the impeller.

Description

Centrifugal pump rotor impeller detaching mechanism

Technical Field

The utility model relates to a centrifugal pump technical field especially relates to a centrifugal pump rotor impeller disassembly body.

Background

The multistage centrifugal pump has the advantages of simple structure, convenience in use and maintenance, large flow, high lift, high energy efficiency and the like, and is widely applied to multiple industries such as urban water delivery, industry, mining and the like.

In the existing multistage centrifugal pump, a pump rotor is structured such that a multistage impeller is sequentially mounted on a pump shaft, and the impeller and the pump shaft are in interference fit during mounting, so that the impeller needs to be detached from the pump shaft for maintenance when the rotor fails. The existing process of removing the rotor generally comprises the steps of heating the rotor by high temperature to expand the rotor, and then prying the rotor out of a pump shaft by using a copper bar for knocking or a crow bar.

However, the impeller is often not inclined due to the fact that the impeller cannot be subjected to uniform axial force when the impeller is disassembled by using brute force in the manner of crow bars and the like, the impeller is extremely easy to damage, and in the disassembling process, stress points are unstable, and great potential safety hazards exist.

SUMMERY OF THE UTILITY MODEL

The utility model provides a centrifugal pump rotor impeller disassembly body is difficult for causing the impeller to damage and the security is high.

The utility model provides a centrifugal pump rotor impeller disassembly body, the dismantlement sleeve that has the end wall including one end, the screw rod, the clamp plate, lock nut and two at least locating pins, wherein, it is greater than the diameter of impeller to dismantle telescopic internal diameter, the locating pin is worn to establish on dismantling telescopic lateral wall, and the locating pin is greater than the thickness of impeller apart from the inboard distance of end wall, be equipped with the first through-hole that the rotor shaft that supplies the rotor passed on the end wall, one side and the end wall connection of screw rod, the opposite side is worn to establish in the clamp plate, the clamp plate sets up with the end wall relatively, the lock nut screw thread closes on the screw rod soon, and be located deviating from of clamp.

Through the arrangement, during disassembly, the rotor shaft is arranged in the disassembly sleeve in a penetrating way through the first through hole, the pressing plate and the rotor shaft are arranged oppositely, the impeller is arranged in the disassembly sleeve, after the positioning pin is inserted, the positioning pin is arranged on the back of the impeller, one end of the screw rod is connected with the end wall, the other side of the screw rod is arranged in the pressing plate in a penetrating way, at the moment, the screw rod is driven to move by rotating the locking nut, the distance between the pressing plate and the disassembly sleeve is gradually shortened until the pressing plate is propped against the end part of the rotor shaft, the locking nut is continuously rotated, the distance between the pressing plate and the disassembly sleeve is gradually reduced, force deviating from the disassembly direction of the impeller is exerted on the rotor shaft, the positioning pin is butted on the back of the impeller, force towards the disassembly direction of the impeller is exerted on the impeller under the driving of the disassembly sleeve, and the force towards, the process of applying instant impact force such as knocking or crowing is avoided, so that the safety is greatly improved.

Optionally, when the positioning pin is inserted into the side wall of the detaching sleeve, the positioning pin is perpendicular to the axis of the detaching sleeve, and the distance between the end of the positioning pin or the positioning pin and the axis of the detaching sleeve is smaller than the radius of the impeller.

The locating pin can be guaranteed to be parallel to the impeller with the locating pin being perpendicular to the axis of the disassembling sleeve, so that the whole pin body of the locating pin is in contact with the end face of the impeller, and the disassembling force applied to the impeller is more uniform.

Optionally, the locating pin penetrates a side wall of the removal sleeve.

Therefore, the two ends of the positioning pin penetrate through the outer side of the disassembling sleeve, the longer part of the positioning pin, which is positioned on the inner side of the disassembling sleeve, can be contacted with the impeller, the disassembling force is applied to the end face of the impeller, and the disassembling force can be more uniform.

Optionally, the positioning pin has a plurality of positioning pins, and the distance between the plurality of positioning pins and the dismounting sleeve is equal. The distances between the positioning pins and the disassembling sleeve are equal, so that the force applied to the impeller by the positioning pins is equal to the distance from the impeller center, and uniform stress on all positions in the circumferential direction of the impeller is facilitated.

Optionally, one side of the screw is threadedly connected to the end wall.

This allows one side of the screw to be removably attached to the end wall.

Optionally, the end of the screw rod facing away from the dismounting sleeve is further provided with a screw locking head so as to screw the screw rod onto the end wall.

A screw locking head is provided to facilitate rotation of the screw.

Optionally, the screw rod is provided with a plurality of screw rods, and the plurality of screw rods are arranged around the axis of the dismounting sleeve; and/or a plurality of screws are uniformly distributed on the circumferential direction of the disassembling sleeve.

The plurality of screws are arranged around the axis of the dismounting sleeve, so that the pulling force applied to the dismounting sleeve by the screws is more uniform, and the pulling force can be uniformly distributed along the circumferential direction of the dismounting sleeve by uniformly distributing the plurality of screws in the circumferential direction of the dismounting sleeve.

Optionally, the diameter of the pressure plate is the same as the outer diameter of the removal sleeve.

Because the rotor shaft of the rotor is generally longer along the axial dimension, the axial line of the rotor shaft is enabled to be parallel to the ground and transversely arranged for disassembly when the disassembly operation is usually carried out, so that when the diameter of the pressing plate is the same as the outer diameter of the disassembly sleeve, the whole rotor shaft can be ensured to be parallel to the ground, and the phenomenon of impeller deflection is not easy to occur when the impeller is disassembled.

Optionally, a jack is further arranged on one side of the pressure plate close to the dismounting sleeve.

In some cases, the interference magnitude between the impeller and the rotor shaft is large, and when the impeller cannot be disassembled by rotating the locking nut, a jack can be arranged between the pressing plate and the rotor shaft, so that sufficient force can be applied to the pressing plate.

Optionally, the inner diameter of the first through hole is the same as the diameter of the impeller opening ring on the rotor, and/or the inner diameter of the dismounting sleeve is the same as the diameter of the impeller. The impeller can be prevented from shaking and deflecting in the dismounting process by enabling the inner diameter of the dismounting sleeve to be the same as the diameter of the impeller. The impeller is enabled to move along the inner side wall of the dismounting sleeve all the time.

The utility model provides a centrifugal pump rotor impeller disassembly body, the dismantlement sleeve that has the end wall including one end, the screw rod, the clamp plate, lock nut and two at least locating pins, wherein, it is greater than the diameter of impeller to dismantle telescopic internal diameter, the locating pin is worn to establish on dismantling telescopic lateral wall, and the locating pin is greater than the thickness of impeller apart from the inboard distance of end wall, be equipped with the first through-hole that the rotor shaft that supplies the rotor passed on the end wall, one side and the end wall of screw rod are connected, the opposite side is worn to establish in the clamp plate, the clamp plate sets up with the end wall relatively, the lock nut screw thread closes on the screw rod soon, and be located deviating from. Through the arrangement, during disassembly, the rotor shaft is arranged in the disassembly sleeve in a penetrating way through the first through hole, the pressing plate and the rotor shaft are arranged oppositely, the impeller is arranged in the disassembly sleeve, after the positioning pin is inserted, the positioning pin is arranged on the back of the impeller, one end of the screw rod is connected with the end wall, the other side of the screw rod is arranged in the pressing plate in a penetrating way, at the moment, the screw rod is driven to move by rotating the locking nut, the distance between the pressing plate and the disassembly sleeve is gradually shortened until the pressing plate is propped against the end part of the rotor shaft, the locking nut is continuously rotated, the distance between the pressing plate and the disassembly sleeve is gradually reduced, force deviating from the disassembly direction of the impeller is exerted on the rotor shaft, the positioning pin is butted on the back of the impeller, force towards the disassembly direction of the impeller is exerted on the impeller under the driving of the disassembly sleeve, and the force towards, the process of applying instant impact force such as knocking or crowing is avoided, so that the safety is greatly improved.

Drawings

Fig. 1 is a schematic cross-sectional structural view of a centrifugal pump rotor impeller dismounting mechanism according to an embodiment of the present invention;

fig. 2 is a schematic perspective view of a centrifugal pump rotor impeller dismounting mechanism according to a first embodiment of the present invention;

fig. 3 is a schematic structural view of a dismounting sleeve in the centrifugal pump rotor impeller dismounting mechanism according to the first embodiment of the present invention;

fig. 4 is a schematic structural view of a positioning pin in a centrifugal pump rotor impeller dismounting mechanism according to a first embodiment of the present invention;

fig. 5 is a schematic structural view of a pressing plate in the centrifugal pump rotor impeller dismounting mechanism according to the first embodiment of the present invention;

fig. 6 is a schematic structural view of a screw locking head in a rotor impeller dismounting mechanism of a centrifugal pump according to an embodiment of the present invention.

Description of the reference numerals

100-a centrifugal pump rotor impeller dismounting mechanism;

1-disassembling the sleeve;

2-a screw;

3, pressing a plate;

5-locking the nut;

6-positioning pins;

8-impeller;

9-screw locking head;

11-an end wall;

12-a first via;

13-a hollow cavity;

14-a second via;

15-a threaded hole;

61-first pin hole;

62-second pin hole.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the drawings in the first embodiment of the present invention will be combined to clearly and completely describe the technical solutions in the first embodiment of the present invention, and obviously, the described embodiments are part of the first embodiment of the present invention, but not all of the first embodiment. Based on the first embodiment of the present invention, all other first embodiments obtained by a person skilled in the art without creative work all belong to the protection scope of the present invention.

Example one

Fig. 1 is the embodiment of the utility model provides a sectional structure schematic diagram of centrifugal pump rotor impeller detaching mechanism, fig. 2 is the utility model provides a centrifugal pump rotor impeller detaching mechanism's spatial structure schematic diagram, fig. 3 is the utility model discloses a centrifugal pump rotor impeller detaching mechanism who provides in the structural diagram who dismantles the sleeve, fig. 4 is the utility model provides a centrifugal pump rotor impeller detaching mechanism in the structural diagram of locating pin, fig. 5 is the utility model provides a centrifugal pump rotor impeller detaching mechanism intermediate pressure plate's that provides structural diagram, fig. 6 is the utility model provides a centrifugal pump rotor impeller detaching mechanism in the structural diagram of screw rod locking head. As shown in fig. 1-6, the utility model provides a centrifugal pump rotor impeller detaching mechanism 100, have the dismantlement sleeve 1 of end wall 11 including one end, screw rod 2, clamp plate 3, lock nut 5 and two at least locating pins 6, wherein, the internal diameter of dismantling sleeve 1 is greater than the diameter of impeller 8, locating pin 6 wears to establish on the lateral wall of dismantling sleeve 1, and locating pin 6 is greater than the thickness of impeller 8 apart from the inboard distance of end wall 11, be equipped with the first through-hole 12 that the rotor shaft that supplies the rotor passed on end wall 11, one side and the end wall 11 of screw rod 2 are connected, the opposite side is worn to establish in clamp plate 3, clamp plate 3 sets up with end wall 11 relatively, lock nut 5 screw thread closes on screw rod 2 soon, and be located the one side of dismantling sleeve 1 that deviates from of clamp plate 3.

Through the arrangement, during disassembly, the rotor shaft penetrates through the disassembly sleeve 1 through the first through hole 12, the pressing plate 3 is arranged opposite to the rotor shaft, the impeller 8 is positioned inside the disassembly sleeve 1, after the positioning pin 6 is inserted, the positioning pin 6 is positioned on the back of the impeller 8, one end of the screw rod 2 is connected with the end wall 11, the other side of the screw rod 2 penetrates through the pressing plate 3, at the moment, only the locking nut 5 is rotated to drive the screw rod 2 to move, the distance between the pressing plate 3 and the disassembly sleeve 1 is gradually shortened until the pressing plate 3 pushes against the end part of the rotor shaft, the locking nut 5 is continuously rotated, the distance between the pressing plate 3 and the disassembly sleeve 1 is gradually reduced, a force deviating from the disassembly direction of the impeller 8 is applied to the rotor shaft, the positioning pin 6 is abutted against the back of the impeller 8, and a force towards the disassembly direction of the impeller 8 is applied to the impeller 8 under the driving of the disassembly sleeve, therefore, the stress condition is more uniform compared with the prior art, and the process of applying instant impact force such as knocking or crowing is avoided, so that the safety is greatly improved.

Specifically, the disassembly sleeve 1 with the end wall 11 at one end specifically means that the disassembly sleeve 1 is internally provided with a hollow cavity 13, one end of the disassembly sleeve is closed, and the other end of the disassembly sleeve is provided with an opening, in addition, the inner diameter of the disassembly sleeve 1 is larger than the diameter of the impeller 8, so that the impeller 8 can be accommodated in the hollow cavity 13 during specific disassembly. The locating pin 6 wears to establish on the lateral wall of dismantling sleeve 1, can make and be equipped with on the lateral wall of dismantling sleeve 1 and link up the first pinhole 61 of lateral wall, and wear to establish locating pin 6 in the pinhole, the tip of locating pin 6 enters into in the cavity 13, perhaps be equipped with second pinhole 62 in the corresponding position department relative with first pinhole 61 of dismantling sleeve 1, make same locating pin 6 wear to establish simultaneously in first pinhole 61 and second pinhole 62, the part that is located in the cavity 13 of locating pin 6 is longer like this, all can be used for with impeller 8's back butt, play the dismantlement effect. This increases the contact area of the positioning pin 6 with the impeller 8, compared to the case where only the end of the positioning pin 6 is in contact with the end face of the impeller 8.

And the distance between the positioning pin 6 and the inner side of the end wall 11 is larger than the thickness of the impeller 8, so that the positioning pin 6 can be positioned on the back of the impeller 8 when the impeller 8 is in the hollow cavity 13. Furthermore, the end wall 11 is provided with a first through opening 12 through which the rotor shaft of the rotor passes, so that the rotor shaft of the impeller 8 can just project from the first through opening 12 when it is located inside the removal sleeve 1. One side of the screw rod 2 is connected with the end wall 11, and the other side of the screw rod is inserted into the pressing plate 3, specifically, a second through hole 14 is provided on the pressing plate 3, and the other side of the screw rod 2 can be inserted into the pressing plate 3 through the second through hole 14, of course, the number of the second through holes 14 can correspond to the number of the screw rods 2. The locking nut 5 is screwed on the screw rod 2 and is positioned on one side of the pressing plate 3 departing from the disassembling sleeve 1, so that the screw rod 2 can move linearly when the disassembling operation is carried out.

Optionally, when the positioning pin 6 is inserted into the side wall of the detaching sleeve 1, the positioning pin 6 is perpendicular to the axis of the detaching sleeve 1, and the distance between the positioning pin 6 or the end of the positioning pin 6 and the axis of the detaching sleeve 1 is smaller than the radius of the impeller 8. The positioning pin 6 is perpendicular to the axis of the disassembling sleeve 1, so that the positioning pin 6 is parallel to the impeller 8, the whole pin body of the positioning pin 6 is in end face contact with the impeller 8, and the disassembling force applied to the impeller 8 is more uniform. Specifically, the positioning pin 6 is perpendicular to the axis of the removing sleeve 1 specifically means that when the positioning pin 6 is inserted into the inner side wall of the removing sleeve 1, the positioning pin 6 is parallel to the end surface of the impeller 8, and thus, a pair of pin holes corresponding to each other, that is, the first pin hole 61 and the second pin hole 62, need to be located on the same circumference in the circumferential direction of the removing sleeve 1.

Alternatively, the positioning pin 6 penetrates the side wall of the removal sleeve 1. Thus, except that the two ends of the positioning pin 6 penetrate through the outer side of the disassembling sleeve 1, the longer part of the positioning pin 6 positioned on the inner side of the disassembling sleeve 1 can be used for contacting with the impeller 8, and the disassembling force is applied to the end face of the impeller 8, and can also be more uniform. In a specific implementation manner, as described above, the first pin hole 61 and the second pin hole 62 are formed in the side wall of the removal sleeve 1 so as to face each other.

Further, the positioning pin 6 is provided in plurality, and the plurality of positioning pins 6 are equidistant from the axis of the removing sleeve 1. By making the distances between the plurality of positioning pins 6 and the removing sleeve 1 equal, the force applied by the plurality of positioning pins 6 to the impeller 8 is equal in distance with respect to the center of the impeller 8, which is beneficial to uniformly applying force to all positions in the circumferential direction of the impeller 8. As shown in fig. 2, the present embodiment is described by taking two positioning pins 6 as an example, but the present invention is not limited thereto, and other numbers may be used.

Furthermore, optionally, one side of the screw 2 is screwed to the end wall 11. This allows one side of the screw 2 to be detachably connected to the end wall 11. Specifically, a threaded hole 15 may be formed in the outer surface of the end wall 11, and the threaded hole 15 is disposed at a position corresponding to the position of the second through hole 14, so that the screw 2 can be perpendicular to the end surface of the impeller 8 or parallel to the rotor shaft, thereby ensuring that the force applied to the impeller 8 is along the axial direction of the rotor.

Furthermore, in order to facilitate the rotation of the screw rod 2, a screw locking head 9 can be considered, and the end part of the screw rod 2 departing from the dismounting sleeve 1 is also provided with the screw locking head 9 so as to screw the screw rod 2 to the end wall 11. The screw locking head 9 is provided to facilitate rotation of the screw 2.

As for the number of screws 2, it is possible to have a plurality of screws 2, and a plurality of screws 2 are arranged around the axis of the removal sleeve 1; and/or a plurality of screw rods 2 are uniformly distributed in the circumferential direction of the dismounting sleeve 1. In the case shown in fig. 1, the two screws 2 are used as an example for explanation, but the present invention is not limited thereto, and other numbers may be set according to actual needs. The plurality of screws 2 are arranged around the axis of the dismounting sleeve 1, so that the pulling force applied to the dismounting sleeve 1 by the screws 2 is more uniform, and the pulling force can be uniformly distributed along the circumferential direction of the dismounting sleeve 1 by uniformly distributing the plurality of screws 2 in the circumferential direction of the dismounting sleeve 1.

Alternatively, the diameter of the pressure plate 3 is the same as the outer diameter of the removal sleeve 1. Because the rotor shaft of the rotor is generally long along the axial dimension, when the disassembly operation is usually carried out, the axis of the rotor shaft is enabled to be parallel to the ground and transversely arranged for disassembly, so that when the diameter of the pressing plate 3 is the same as the outer diameter of the disassembly sleeve 1, the whole rotor shaft can be ensured to be parallel to the ground, and the phenomenon that the impeller 8 deflects is not easy to occur when the impeller 8 is disassembled. In addition, as shown in fig. 1, the diameter of the pressure plate 3 may be larger than that of the removal sleeve 1, but the diameter of the pressure plate 3 cannot be smaller than that of the removal sleeve 1, so that the screw 2 cannot be arranged parallel to the axis of the rotor.

In some cases, the interference between the impeller 8 and the rotor shaft is large, and when the impeller 8 cannot be removed by rotating the lock nut 5, it may be considered to provide a jack between the pressing plate 3 and the rotor shaft, which can ensure that a sufficient force is applied to the pressing plate 3. Specifically, optionally, a jack (not shown) is further disposed on one side of the pressing plate 3 close to the detaching sleeve 1, and the pressing plate 3 is pressed out by using the jack, so that the effect of taking out the impeller 8 can also be achieved.

Generally, an impeller opening ring is further arranged on one end face of the impeller 8, and the inner diameter of the first through hole 12 is the same as the diameter of the impeller opening ring on the rotor, so that when the distance between the positioning pin 6 and the end face is not large enough, the impeller opening ring can be accommodated in the first through hole 12, and the impeller 8 is prevented from being interfered.

Furthermore, it is optional that the inner diameter of the removal sleeve 1 is the same as the diameter of the impeller 8. The impeller 8 can be prevented from shaking and deflecting in the dismounting process by enabling the inner diameter of the dismounting sleeve 1 to be the same as the diameter of the impeller 8. The impeller 8 is always moved along the inner side wall of the removing sleeve 1.

The extracting tool of this embodiment is fixed impeller 8 through dismantling sleeve 1, and then locating pin 6 is fixed impeller 8 back through first pinhole 61, the second pinhole 62 on dismantling sleeve 1, gives impeller 8 sufficient pressure, and screw rod 2 is connected and is dismantled sleeve 1, fixes clamp plate 3 on screw rod 2 to the top is on the rotor shaft, and fastening lock nut 5 makes it have even reaction force, finally takes out impeller 8 through reaction force. Because the locating pin 6 and the installation of dismantling sleeve 1, can keep impeller 8's stability at the dismantlement process to make impeller 8 back have even pressure, effectively avoid when dismantling pressure too concentrated or stress point not to cause impeller 8's deformation damage. Due to the fact that the locking nut 5 is used, the impeller 8 can be taken out through the reaction force of the pressing plate 3, the whole process is stressed through threads on the screw rod 2, and the phenomena of time consuming, labor consuming and unsafety when the copper bar and the crow bar are used for dismounting are avoided. In addition, the pressing plate 3, the screw rod 2 and the locking nut 5 are combined to be disassembled, so that the uniform walking amount of the impeller 8 in the disassembling process can be ensured, and the phenomenon that the impeller 8 is inclined to cause locking is avoided. In order to ensure that the removing sleeve 1 can be mounted on the impeller 8, the removing sleeve 1 and the positioning pin 6 need to be changed in size according to the diameter and thickness of the removing impeller 8. Theoretically, by changing the size of the dismounting sleeve 1, the novel special tool can be suitable for dismounting the impeller 8 with any size.

Next, the procedure of detaching the impeller 8 by the centrifugal pump rotor impeller detaching mechanism 100 of the present embodiment will be described with reference to fig. 1 to 6.

As shown in fig. 1 to 6, the detaching sleeve 1 is first inserted through the rotor shaft and fitted over the outer side of the impeller 8 so that the impeller 8 and the inner side wall of the end wall 11 are close to each other. Two positioning pins 6 are then fitted into the first and second pin holes 61 and 62, it being understood that the same positioning pin 6 is fitted into a set of the first and second pin holes 61 and 62 corresponding to each other. Then, one end of each of the two screws 2 is installed on the end wall 11 and is specifically screwed into the corresponding threaded hole 15, the other end of each of the two screws 2 is inserted into the second through hole 14, that is, the pressing plate 3, and then the screws 2 are completely screwed into the corresponding threaded holes 15 by using the screw locking heads 9. The screw 2 is then screwed on the outside using the lock nut 5 until it comes into contact with the pressure plate 3. This completes the installation of the centrifugal pump rotor impeller disassembly mechanism 100.

And next, a step of disassembling, specifically, screwing the fastening nut, so that the disassembling sleeve 1 moves outwards through the pulling force of the screw rod 2 until the back of the impeller 8 and the positioning pin 6 are stressed by death and then stop. Then, the impeller 8 is heated by a heating means such as gas welding until the temperature reaches a suitable temperature, so that the impeller 8 is expanded as a whole. Then, the locking nut 5 is continuously fastened, the screw rod 2 continues to move outwards through the reaction force on the pressing plate 3, the screw rod 2 drives the disassembling sleeve 1 to move together, the positioning pin 6 fixed on the disassembling sleeve 1 continuously extrudes the back of the impeller 8 outwards, and finally the impeller 8 is taken out.

In this embodiment, centrifugal pump rotor impeller disassembly body includes that one end has the dismantlement sleeve of end wall, the screw rod, the clamp plate, lock nut and two at least locating pins, wherein, it is greater than the diameter of impeller to dismantle telescopic internal diameter, the locating pin is worn to establish on dismantling telescopic lateral wall, and the locating pin is greater than the thickness of impeller apart from the inboard distance of end wall, be equipped with the first through-hole that the rotor shaft that supplies the rotor passed on the end wall, one side and the end wall of screw rod are connected, the opposite side is worn to establish in the clamp plate, the clamp plate sets up with the end wall relatively, lock nut screw thread closes on the screw rod soon, and be located deviating from. Through the arrangement, during disassembly, the rotor shaft is arranged in the disassembly sleeve in a penetrating way through the first through hole, the pressing plate and the rotor shaft are arranged oppositely, the impeller is arranged in the disassembly sleeve, after the positioning pin is inserted, the positioning pin is arranged on the back of the impeller, one end of the screw rod is connected with the end wall, the other side of the screw rod is arranged in the pressing plate in a penetrating way, at the moment, the screw rod is driven to move by rotating the locking nut, the distance between the pressing plate and the disassembly sleeve is gradually shortened until the pressing plate is propped against the end part of the rotor shaft, the locking nut is continuously rotated, the distance between the pressing plate and the disassembly sleeve is gradually reduced, force deviating from the disassembly direction of the impeller is exerted on the rotor shaft, the positioning pin is butted on the back of the impeller, force towards the disassembly direction of the impeller is exerted on the impeller under the driving of the disassembly sleeve, and the force towards, the process of applying instant impact force such as knocking or crowing is avoided, so that the safety is greatly improved.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected. Either mechanically or electrically. Either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, but not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the first embodiments above may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the invention as defined by the appended claims.

Claims (10)

1. The utility model provides a centrifugal pump rotor impeller disassembly body, its characterized in that has dismantlement sleeve, screw rod, clamp plate, lock nut and two at least locating pins of end wall including one end, wherein, dismantle telescopic internal diameter and be greater than the diameter of impeller, the locating pin is worn to establish dismantle on the telescopic lateral wall, just the locating pin distance the inboard distance of end wall is greater than the thickness of impeller, be equipped with the confession on the end wall the first through-hole that the rotor shaft of rotor passed, one side of screw rod with end wall connection, the opposite side is worn to establish in the clamp plate, the clamp plate with the end wall sets up relatively, the lock nut screw thread closes soon on the screw rod, and is located deviating from of clamp plate dismantle telescopic one side.

2. The centrifugal pump rotor impeller disassembly mechanism of claim 1, wherein the locating pin is perpendicular to the axis of the disassembly sleeve when the locating pin is inserted through the side wall of the disassembly sleeve, and the distance between the locating pin or the end of the locating pin and the axis of the disassembly sleeve is smaller than the radius of the impeller.

3. The centrifugal pump rotor impeller disassembly mechanism of claim 2, wherein the locating pin penetrates a sidewall of the disassembly sleeve.

4. A centrifugal pump rotor impeller disassembly mechanism as recited in claim 2, wherein said alignment pin is plural and said alignment pins and said disassembly sleeve axis are equidistant.

5. A centrifugal pump rotor impeller disassembly mechanism as claimed in any of claims 1-4, wherein one side of the screw is threadedly connected to the end wall.

6. A centrifugal pump rotor impeller disassembly mechanism as claimed in claim 5, wherein the end of the screw remote from the disassembly sleeve is further provided with a screw locking head to thread the screw onto the end wall.

7. A centrifugal pump rotor impeller disassembly mechanism as recited in claim 5, wherein the screw has a plurality, and the plurality of screws are disposed about an axis of the disassembly sleeve; and/or the plurality of screws are uniformly distributed in the circumferential direction of the disassembling sleeve.

8. A centrifugal pump rotor impeller disassembly mechanism as claimed in any of claims 1-4, wherein the diameter of the pressure plate and the outer diameter of the disassembly sleeve are the same.

9. A centrifugal pump rotor impeller disassembly mechanism as claimed in any one of claims 1-4, wherein a jack is further provided on a side of the pressure plate adjacent to the disassembly sleeve.

10. A centrifugal pump rotor impeller disassembly mechanism according to any one of claims 1 to 4, wherein the inner diameter of the first through hole is the same as the diameter of an impeller eye on the rotor, and/or the inner diameter of the disassembly sleeve is the same as the diameter of the impeller.

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