CN209175505U - A kind of low specific-speed centrifugal pump impeller cover burnishing device - Google Patents

Abstract

A kind of low specific-speed centrifugal pump impeller cover burnishing device installs driving device, the output shaft and transmission axis connection of driving device on pedestal, transmission shaft is connected and fixed with impeller, impeller is located in abrasive material case, and impeller is installed in abrasive material case, and transmission shaft passes through workbench and protrudes into abrasive material case；The upper inlet of impeller is connected to effluent pipe mouth；Abrasive material case lid is arranged in the upside of upper impeller import, one circle of abrasive material case is provided with apopore, the water outlet of abrasive material case is connect with water pipe, the water pipe other end connects with the upper entrance of runner case, the lower part outlet of runner case is connected with outlet pipe, and the outlet pipe other end is connected with abrasive material case lid, and the lower end of electromagnet is connect with impeller is polished, the upper end of electromagnet is connected with elevator, is polished part and is connected with clamping cover board.The simplification of the utility model structure, small volume, polishing efficiency is higher, cost is relatively low.

Description

A kind of low specific-speed centrifugal pump impeller cover burnishing device

Technical field

The utility model belongs to centrifugal pump impeller cover board burnishing device, and especially a kind of centrifugal pump impeller cover board efficiently polishes Device.

Background technique

Currently, most domestic centrifugal pump impeller still uses traditional sand casting process, impeller cover surface usually compared with It is coarse.And core component of the impeller as centrifugal pump, roughness have large effect to the performance of unit.Reduce impeller cover Hydraulic loss and mechanical loss of the roughness of plate surface to reducing in impeller improve unit efficiency and play an important roll.To mention The credit rating on high flow passage components surface, needs to polish impeller cover.Impeller is beaten using traditional-handwork technique When grinding and polishing light, dynamics and direction are not easy to control, and more demanding to Benchwork, polishing efficiency is relatively low.

Abrasive flow machining is to flow through workpiece surface under a certain pressure repeatedly by carrying the liquid of viscoelastic matrix medium The special process of polishing, the chemical property of abrasive material is highly stable in abrasive Flow Machining, and part material is flowed repeatedly by abrasive grain Removal, after grinding, surface stress substantially reduces.Abrasive Flow removal material is very clean, and workpiece surface is defective Place will not leave behind other impurity to fill and lead up, and same abrasive material can be used to process, from a workpiece in the workpiece of unlike material The material of upper removal will not leave on other surfaces.But existing centrifugal pump impeller cover board burnishing device, it needs Abrasive grain mixing plant, piping connection is also more, and apparatus structure is complicated, volume is larger, higher cost.

Summary of the invention

In order to overcome existing centrifugal pump impeller cover board burnishing device, structure is complicated, volume is larger, polishing efficiency is lower, at This higher deficiency, the utility model provide that a kind of structure simplification, small volume, polishing efficiency be higher, lower-cost low ratio Revolving speed centrifugal pump impeller cover board burnishing device.

The technical scheme adopted by the utility model to solve the technical problem is as follows:

A kind of low specific-speed centrifugal pump impeller cover burnishing device, including pedestal, frame, cylinder, impeller, lifting it is mechanical, electrical Magnet, abrasive material case clamp cover board, runner case and driving device, install the driving device, the driving device on the pedestal Output shaft and the transmission axis connection, the transmission shaft is connected and fixed with impeller, and the impeller is located in abrasive material case, the mill Impeller is installed, the transmission shaft passes through workbench and protrudes into abrasive material case in hopper；The upper inlet and outlet pipe of the impeller Mouth connection；Abrasive material case lid is arranged in the upside of the upper impeller import, and a circle of the abrasive material case is provided with apopore, the abrasive material The water outlet of case is connect with water pipe, and the water pipe other end connects with the upper entrance of the runner case, under the runner case Portion outlet is connected with outlet pipe, and the outlet pipe other end is connected with abrasive material case lid, and the lower end of the electromagnet is thrown with described Light vane connection, the upper end of the electromagnet are connected with the elevator, and the part that is polished is connected with the clamping cover board.

Further, it is sealed between the transmission shaft and abrasive material storage bin by filler, the upper end of the transmission shaft and leaf Wheel is connected by key and impeller nut；The effect of the clamping cover board is by replacing corresponding clamping cover board, in order to difference The impeller of aperture size is polished, and the transmission shaft is connected through a screw thread with impeller, thread rotary orientation and the impeller rotation side To unanimously to avoid loosening.

Further, the impeller port ring gap is 3~5mm, i.e., outer circumference surface and the choma at the described impeller inlet The radial distance of inner peripheral surface, too small to avoid choma gap, particle denudes excessive polishing at impeller port ring；It is described Choma is connected at abrasive material case lid by screw, is matched with impeller, to guarantee impeller port ring gap for 3~5mm；

Further, the upper inlet empty set of the impeller is in the choma that abrasive material case lid lower part outlet is connected.

The output shaft of the driving device passes through shaft coupling and the transmission axis connection.

The driving device is variable-frequency motor.

The abrasive material case is mounted on lower bottom base, and the cylinder pedestal is installed on the workbench.

The technical concept of the utility model are as follows: an a total of motor of whole device, a transmission shaft, motor pass through shaft coupling Device and transmission axis connection.The motor of described device is rotated by bottom driving axis impeller, and impeller passes through key and impeller nut With transmission axis connection, the centrifugal force generated when wheel rotation can drive the fluid in impeller to flow out from impeller outlet, reach one Determine revolving speed, abrasive material is subject to centrifugal forces, and is flowed out from abrasive material case, into runner case, polishes workpiece, then by abrasive material case entrance It flows back to.Fluid used in device is a kind of abrasive Flow, i.e., some abrasive medias are had in fluid, when abrasive material moves, impeller cover The fluid of plate surface can polish to impeller surface, polished, remove burr.To avoid choma gap from crossing little particle to impeller mouth Excessive polishing at ring, impeller port ring gap are 3~5mm；Due to using one to shunt abrasive material into three formula current dividers at tunnel inlets, and And runner height is very low, be thus effectively controlled abrasive material is influenced by gravity decline, so that the abrasive grain in fluid enters Runner is evenly distributed substantially.

The beneficial effects of the utility model are mainly manifested in: 1, the utility model provides a kind of centrifugal pump impeller cover board throwing Self-loopa can be achieved in device for electro-optical device, save sanding and polishing cost, reduce manpower and material resources.2, the utility model devises one The very efficient runner of kind can make abrasive grain in the bottom of impeller cover, keep the polishing of impeller, polishing more efficient.3, this reality With New device structures are simple, compact, easy to operate, long service life, and polishing effect is good, reduce manufacture and use at This.

Detailed description of the invention

Fig. 1 is centrifugal pump impeller cover board burnishing device schematic diagram.

Fig. 2 is device top view.

Specific embodiment

The utility model is further described with reference to the accompanying drawing.

Referring to Figures 1 and 2, a kind of centrifugal pump impeller cover board burnishing device, including pedestal 1, lower bracket 4, impeller 19, abrasive material Case 8, abrasive material case lid 9, transmission shaft 7, choma 18, elevator 12, electromagnet 11, runner case lid 16, runner case 10 and driving device 2, the driving device 2 is installed on the pedestal 1, the output shaft of the driving device 2 is connect with the bottom driving axis 7, institute It states abrasive material case 8 to be located on lower bracket 4, impeller 19 is installed in the abrasive material case 8, the transmission shaft 7 passes through workbench and protrudes into mill In hopper 8, the upper end of the transmission shaft 7 and impeller 19 are connected by impeller nut；Thread rotary orientation and 19 direction of rotation one of impeller Show and avoid loosening, keyway is provided on the impeller sleeve 23 with the impeller 19 that is connected；The upper inlet and abrasive material of the impeller 19 The lower part outlet of case lid 9 is connected to；The choma 18 is connected in 9 exit of abrasive material case lid, matches with impeller 19, and can be according to not With the choma 18 of 19 size of impeller replacement corresponding size；The elevator upper end and upper bracket are connected；The elevator lower end and Electromagnet upper end is connected；The electromagnet lower end is connected with part is polished；

Further, the upper inlet empty set of the impeller 19 is in the choma 18 that the lower part outlet of abrasive material case lid 9 is connected.

Further, the driving device 2 is variable-frequency motor.

The centrifugal pump impeller cover board burnishing device of the present embodiment includes pedestal 1, driving device 2, shaft coupling 3, runner case lid 5, lower bracket 4, abrasive material case 8, impeller 19, abrasive material case lid 9, runner case 10, runner case lid 16, impeller nut, impeller 19 and transmission After device installs, abrasive fluid is injected into abrasive material case 8 for axis 7, and driving device 2 is fixed on ground by motor base 1 On, then by shaft coupling 3, be connected with bottom driving axis 7, bottom driving axis is connected by key and impeller nut with impeller 19, is driven Dynamic device 2 rotates, and impeller 19 rotates, since the centrifugal force that the rotation of impeller 19 generates makes the fluid outward movment in impeller, It is flowed out from impeller outlet, the liquid of outflow has certain kinetic energy, will continue to move upwards in abrasive material case 8, flows through water pipe wind Device is flowed, into runner case 10, runner case 10 is fixed on bracket, is mounted with a runner case lid 16 in 10 upper end of runner case, is flowed Enter abrasive material case 15 after body outflow runner case, finally entering impeller inlet, realizing a circulation, entire circulation simply, It is compact.After running a period of time, the operating of top elevator 12 and driving device 2 is controlled by using power-supply controller of electric, After driving device 2 operates a period of time, 2 power supply of driving device is automatically cut off, open top part elevator 12, impeller installs It cuts off top 12 power supply of elevator again later, is recycled with this, realize and automatically control.Blocked operation always in this way, improves impeller Polishing efficiency and effect.

Claims (7)

1. a kind of low specific-speed centrifugal pump impeller cover burnishing device, which is characterized in that including pedestal, frame, cylinder, impeller, Elevator, abrasive material case, clamps cover board, runner case and driving device at electromagnet, installs the driving device, institute on the pedestal The output shaft and transmission axis connection, the transmission shaft for stating driving device are connected and fixed with impeller, and the impeller is located in abrasive material case, Impeller is installed, the transmission shaft passes through workbench and protrudes into abrasive material case in the abrasive material case；The upper inlet of the impeller with Effluent pipe mouth connection；Abrasive material case lid is arranged in the upside of the upper impeller import, and a circle of the abrasive material case is provided with apopore, institute The water outlet for stating abrasive material case is connect with water pipe, and the water pipe other end connects with the upper entrance of the runner case, the runner The lower part outlet of case is connected with outlet pipe, and the outlet pipe other end is connected with abrasive material case lid, the lower end of the electromagnet and institute It states and is polished impeller connection, the upper end of the electromagnet is connected with the elevator, described to be polished part and the clamping cover board It is connected.

2. a kind of low specific-speed centrifugal pump impeller cover burnishing device as described in claim 1, which is characterized in that the transmission It is sealed between axis and abrasive material storage bin by filler, the upper end of the transmission shaft and impeller are connected by key and impeller nut； The transmission shaft is connected through a screw thread with impeller, and thread rotary orientation is consistent with the impeller direction of rotation.

3. a kind of low specific-speed centrifugal pump impeller cover burnishing device as claimed in claim 1 or 2, which is characterized in that described The choma gap of impeller is the radial distance of outer circumference surface and the choma inner peripheral surface at the impeller inlet；The choma is logical It crosses screw to be connected at abrasive material case lid, be matched with impeller, to guarantee the choma gap of impeller for 3~5mm.

4. a kind of low specific-speed centrifugal pump impeller cover burnishing device as claimed in claim 1 or 2, which is characterized in that described The upper inlet empty set of impeller is in the choma that abrasive material case lid lower part outlet is connected.

5. a kind of low specific-speed centrifugal pump impeller cover burnishing device as claimed in claim 1 or 2, which is characterized in that described The output shaft of driving device passes through shaft coupling and the transmission axis connection.

6. a kind of low specific-speed centrifugal pump impeller cover burnishing device as claimed in claim 1 or 2, which is characterized in that described Driving device is variable-frequency motor.

7. a kind of low specific-speed centrifugal pump impeller cover burnishing device as claimed in claim 1 or 2, which is characterized in that described Abrasive material case is mounted on lower bottom base, and the cylinder pedestal is installed on the workbench.