CN217890837U - Impeller and bearing dismounting device - Google Patents

Abstract

The utility model relates to a chemical machinery field discloses an impeller and bearing dismounting device, be in including support (3), circumference setting a plurality of hook (1) and driving piece (8) on support (3), hook (1) can hook on impeller or bearing edge, driving piece (8) can to support (3) are applyed and are kept away from the effort of impeller or bearing direction, thereby make impeller or bearing remove for axle (7). Through the technical content, the plurality of hooks on the support can be hooked on the edge of the impeller or the bearing by moving the support, then the support is pulled under the action of the driving part, so that the impeller or the bearing is hooked out of the shaft by the hooks, the impeller or the bearing is slightly damaged by the dismounting device due to the plurality of stress points, and the dismounted impeller or bearing can be reused.

Description

Impeller and bearing dismounting device

Technical Field

The utility model relates to a chemical machinery field specifically relates to an impeller and bearing dismounting device.

Background

The impeller and the bearing are mechanical parts commonly used in rotary mechanical equipment, and are used for realizing energy transmission of the mechanical equipment or supporting rotation of certain parts. The impeller and bearings are typically mounted on the pump shaft and are subject to varying degrees of wear or damage during operation, requiring periodic replacement.

There are three conventional methods for disassembling an impeller or a bearing for a centrifugal pump: destructive, heating and drawing processes. The damage method is to damage the impeller or the bearing to separate the impeller or the bearing from the pump shaft, and has the defect that the impeller or the bearing cannot be reused. The heating method is to heat the impeller or the bearing by using the principle of expansion with heat and contraction with cold so as to increase the clearance between the impeller or the bearing and the pump shaft, and has the defect of complicated heating equipment. The drawing method is to draw the impeller or the bearing from the pump shaft using a special tool, and has a disadvantage in that the impeller or the bearing and the pump shaft may be damaged.

The impeller and the bearing used in the centrifugal pump equipment are in interference fit with most pump shafts, the impeller or the bearing is disassembled from the pump shafts, and the impeller or the bearing is usually disassembled by adopting a hydraulic puller. However, the existing hydraulic puller mainly comprises two claws or three claws, and the stress is not uniform in the process of detaching the impeller and the bearing, so that the deformation of the impeller and the bearing is possibly caused greatly, and the detached impeller or bearing cannot be reused. When the diameter of the impeller or the bearing is smaller or larger, the hydraulic puller is very difficult to disassemble, and the existing hydraulic puller cannot be suitable for disassembling impellers and bearings with various specifications and models and different installation positions.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the dismantlement process atress that prior art exists uneven, cause the deformation problem of impeller and bearing, provide an impeller and bearing dismounting device, the device dismantles impeller and bearing in-process atress even, and is less to impeller and bearing harm degree.

In order to achieve the above object, the present invention provides an impeller and bearing detaching device, including support, circumference setting a plurality of prongs and driving piece on the support, the prongs can hook on the edge of the impeller or bearing, the driving piece can apply the acting force far away from the impeller or bearing direction to the support, thereby making the impeller or bearing move relative to the shaft.

Optionally, the bracket is uniformly provided with a plurality of connecting rods extending radially outwards in the circumferential direction, and the hooks are arranged on the connecting rods.

Optionally, be equipped with the spout of radial extension on the connecting rod, be equipped with on the claw with spout matched with slider on the connecting rod, the claw can radial sliding on the connecting rod.

Optionally, a fastener is arranged on the hook claw, and the fastener can fix the hook claw on the bracket.

Optionally, the fastener is a jackscrew screwed to the claw and capable of pressing against the connecting rod.

Optionally, the bracket is provided with a central hole for the shaft to pass through, and the bracket can slide on the shaft.

Optionally, the device further comprises at least three pull rods arranged on the bracket, wherein the at least three pull rods are arranged at intervals around the central hole, and the driving piece is supported between the shaft penetrating through the central hole and the pull rods so as to drive the pull rods to move relative to the shaft.

Optionally, the pull rod further comprises a baffle plate arranged on the pull rod, and the driving piece can act on the baffle plate.

Optionally, the baffle plate fixing device further comprises a fixing member slidably disposed on the pull rod, the baffle plate can slide on the pull rod, and the fixing member is located on one side, back to the support, of the baffle plate so as to limit the baffle plate.

Optionally, the fixing pieces correspond to the pull rods one to one.

Through above-mentioned technical scheme, make a plurality of fingers on the support can hook on the edge of impeller or bearing through removing the support, the support is pulled down in the effect of rethread driving piece to make the finger hook out impeller or bearing from the axle, a plurality of stress points can make dismounting device less to impeller and bearing harm, and the impeller or the bearing repeatedly usable that dismantle down.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of an impeller and bearing dismounting device according to the present invention;

fig. 2 is a schematic operation diagram of an embodiment of the impeller and bearing detaching device according to the present invention.

Description of the reference numerals

1-claw, 2-fastener, 3-bracket, 4-pull rod, 5-baffle, 6-fixing piece, 7-shaft, 8-driving piece and 9-connecting rod.

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.

The utility model provides an impeller and bearing dismounting device, including support 3, circumference setting a plurality of hook 1 and driving piece 8 on support 3, hook 1 can hook on impeller or bearing edge, and driving piece 8 can apply the effort of keeping away from impeller or bearing direction to support 3 to make impeller or bearing remove for axle 7.

As shown in fig. 1, the bracket 3 is used as a main body of the dismounting device, the plurality of hooks 1 are arranged on the bracket 3, the bracket 3 is aligned with the impeller or the bearing, the plurality of hooks 1 can be hooked on the edge of the impeller or the bearing, the driving part 8 can act on the bracket 3, an acting force in a direction away from the impeller or the bearing is applied to the bracket 3, and then the bracket 3 is pulled through the driving part 8, so that the impeller or the bearing is hooked out of the shaft 7 by the hooks 1, meanwhile, the more the number of the hooks 1, the more the stress points between the dismounting device and the impeller or the bearing are, the more the stress points can enable the dismounting device to damage the impeller and the bearing, and the dismounted impeller or the bearing can be reused.

Further, the bracket 3 is uniformly provided with a plurality of connecting rods 9 extending radially outwards in the circumferential direction, and the hook claws 1 are arranged on the connecting rods 9.

As shown in fig. 1, by providing the connecting rod 9, an installation space is provided for the hook 1, so that the hook 1 can be easily and conveniently installed on the bracket 3; the quantity one-to-one of quantity and connecting rod 9 of knuckle 1, the quantity of connecting rod 9 is more, and dismounting device is just lighter more in the dismantlement process, the harm to impeller or bearing is less, evenly sets up connecting rod 9 simultaneously, can concentrate the effort to the center of impeller or bearing on, the quantity of connecting rod 9 and knuckle 1 sets up to 8 in this application.

Wherein, be equipped with the spout of radial extension on the connecting rod 9, be equipped with on the claw 1 with the connecting rod 9 on spout matched with slider, claw 1 can be on connecting rod 9 radial slip.

As shown in fig. 1, the sliding grooves are arranged on two sides of the connecting rod 9 in the vertical direction, the sliding grooves radially extend from inside to outside, the claw 1 is sleeved on the outer peripheral surface of the connecting rod 9, meanwhile, the sliding blocks matched with the sliding grooves in the connecting rod 9 are arranged on two sides of the claw 1, and the claw 1 is adjusted on the connecting rod 9 by moving the claw 1, so that the size of a claw formed by the plurality of claws 1 is controlled, impellers or bearings with different sizes can be hooked and detached, and the application range of the detaching device is widened.

Furthermore, a fastening piece 2 is arranged on the hook claw 1, and the fastening piece 2 can fix the hook claw 1 on the bracket 3.

As shown in fig. 1, the hook 1 can be fastened by the fastening device 2 when the position is adjusted, and the hook 1 and the bracket 3 are relatively fixed, so that the situation that the hook 1 is loosened, shaken or even falls off from the bracket 3 when the impeller or the bearing is disassembled by the disassembling device is avoided.

Wherein, the fastener 2 is a jackscrew which is screwed on the hook 1 and can be pressed against the connecting rod 9.

The both sides of hook 1 are equipped with the screw hole, thereby support through continuous screw in the screw hole of 2 spiro unions of fastener and 1 both sides of hook and press on the surface at connecting rod 9, have realized the relatively fixed of hook 1 with connecting rod 9, and fastener 2 chooses for use as the jackscrew in this application.

In one embodiment, the support 3 has a central hole through which the shaft 7 passes, and the support 3 can slide on the shaft 7.

As shown in fig. 2, when the impeller or the bearing on the shaft 7 is disassembled, the claw 1 needs to be hooked on the edge of the impeller or the bearing, the bracket 3 needs to pass through the shaft 7, so that the claw 1 can go deep into the shaft 7 and reach the position of the corresponding impeller or bearing, and the bracket 3 is provided with a central hole through which the shaft 7 can pass, so that the disassembling device can be sleeved on the shaft 7.

Further, the dismounting device comprises at least three tie rods 4 arranged on the bracket 3, the at least three tie rods 4 are arranged circumferentially spaced around the central hole, and a driving member 8 is supported between the shaft 7 passing through the central hole and the tie rods 4 to drive the tie rods 4 to move relative to the shaft 7.

As shown in figure 1, because the space on the support 3 is small and has no proper stress point, the pull rod 4 is arranged on the support 3, the support 3 can be driven to move by pulling the pull rod 4, and the proper stress point is added to the support 3, in the application, 4 pull rods 4 are arranged at uniform intervals around the circumference of the central hole, so that the pulling force can be ensured to act on the central axis, when the dismounting device reaches a specified working position, the shaft 7 passes through the central hole and extends outwards, the driving piece 8 is supported between the shaft 7 and the pull rod 4, and the pull rod 4 is driven to move relative to the shaft 7 under the action of the driving piece 8.

Further, the dismounting device also comprises a baffle 5 arranged on the pull rod 4, and the driving piece 8 can act on the baffle 5.

As shown in fig. 2, be provided with baffle 5 on pull rod 4, baffle 5 is parallel with the terminal surface that axle 7 stretches out the end, and the one end of driving piece 8 offsets with the terminal surface of axle 7, and the other end offsets with the surface of baffle 5, and in this application, hydraulic jack is chooseed for use to driving piece 8, and hydraulic jack convenient operation, labour saving and time saving dismantle efficiently. The distance between the shaft 7 and the baffle 5 is increased by the driving part 8, and the baffle 5 is gradually far away from the shaft 7 under the condition that the shaft 7 is kept immovable, so that the support 3 is pulled towards the opposite direction of the shaft 7 by the pull rod 4, and the impeller or the bearing is further detached from the shaft 7 by the hook 1.

The dismounting device further comprises a fixing piece 6 which is slidably arranged on the pull rod 4, the baffle 5 can slide on the pull rod 4, and the fixing piece 6 is located on one side, back to the support, of the baffle 5 so as to limit the baffle 5.

For the impellers or bearings at different positions, the extending depths of the corresponding detaching devices are different, that is, the extending lengths of the shafts 7 on the support 3 are different, and since the stroke of the driving member 8 is limited, in order to ensure that the two ends of the driving member 8 can respectively abut against the shafts 7 and the baffle 5 in the initial state, the baffle 5 is arranged to be capable of sliding on the pull rod 4, as shown in fig. 2, when the claw 1 is hooked on the impeller or the bearing, the driving member 8 abuts against the extending end of the shaft 7, the baffle 5 is moved to the other end of the driving member 8 to abut against the other end of the driving member 8, and the position of the baffle 5 is fixed through the fixing member 6.

Further, the fixing pieces 6 correspond to the tie bars 4 one to one.

The baffle 5 is provided with a through hole for the pull rod 4 to pass through, each through hole needs a fixing piece 6 to be fixed, the number of the fixing pieces 6 is the same as that of the pull rod 4, and a gasket can be added between the fixing pieces 6 and the baffle 5 to increase the fastening effect of the fixing pieces 6.

The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. In the technical idea scope of the present invention, it can be right to the technical solution of the present invention carry out multiple simple variants, these simple variants and combinations should be regarded as the disclosed content of the present invention, all belong to the protection scope of the present invention.

It should be noted that the various features described in the foregoing embodiments may be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention does not separately describe various possible combinations.

In addition, various embodiments of the present invention can be combined arbitrarily, and the disclosed content should be regarded as the present invention as long as it does not violate the idea of the present invention.

Claims (10)

1. The impeller and bearing dismounting device is characterized by comprising a support (3), a plurality of hooks (1) and a driving part (8), wherein the hooks (1) are circumferentially arranged on the support (3), the hooks (1) can be hooked on the edge of an impeller or a bearing, and the driving part (8) can apply acting force to the support (3) in the direction away from the impeller or the bearing, so that the impeller or the bearing moves relative to a shaft (7).

2. The impeller and bearing dismounting device as claimed in claim 1, characterized in that the bracket (3) is uniformly provided with a plurality of radially outwardly extending connecting rods (9) in the circumferential direction, and the hook claw (1) is provided on the connecting rods (9).

3. The impeller and bearing dismounting device according to claim 2, characterized in that the connecting rod (9) is provided with a radially extending sliding slot, the hook (1) is provided with a sliding block which is matched with the sliding slot on the connecting rod (9), and the hook (1) can slide radially on the connecting rod (9).

4. The impeller and bearing dismounting device as claimed in claim 3, characterized in that a fastening member (2) is provided on the hook (1), the fastening member (2) being capable of fixing the hook (1) to the bracket (3).

5. The impeller and bearing dismounting device according to claim 4, characterized in that the fastening member (2) is a jackscrew screwed to the hook (1) and able to press against the connecting rod (9).

6. The impeller and bearing dismounting device according to claim 1, characterized in that the bracket (3) is provided with a central hole through which the shaft (7) can pass, and the bracket (3) can slide on the shaft (7).

7. The impeller and bearing removal device as claimed in claim 6, further comprising at least three tie rods (4) provided on the carrier (3), at least three tie rods (4) being circumferentially spaced around the central bore, the drive member (8) being supported between the shaft (7) and the tie rods (4) passing through the central bore to drive the tie rods (4) to move relative to the shaft (7).

8. The impeller and bearing dismounting device as claimed in claim 7, further comprising a baffle (5) arranged on the tie rod (4), the driving member (8) being capable of acting on the baffle (5).

9. The impeller and bearing dismounting device as claimed in claim 8, further comprising a fixing member (6) slidably disposed on the pull rod (4), wherein the baffle (5) can slide on the pull rod (4), and the fixing member (6) is located on a side of the baffle (5) facing away from the bracket to limit the baffle (5).

10. The impeller and bearing dismounting device as claimed in claim 9, characterized in that the fixing pieces (6) correspond to the tie rods (4) one to one.

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