CN118775347B - A centrifugal pump auxiliary device for anti-cavitation - Google Patents
A centrifugal pump auxiliary device for anti-cavitation Download PDFInfo
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- CN118775347B CN118775347B CN202411230814.4A CN202411230814A CN118775347B CN 118775347 B CN118775347 B CN 118775347B CN 202411230814 A CN202411230814 A CN 202411230814A CN 118775347 B CN118775347 B CN 118775347B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 52
- 239000007788 liquid Substances 0.000 claims abstract description 22
- 238000002347 injection Methods 0.000 claims description 11
- 239000007924 injection Substances 0.000 claims description 11
- 238000000605 extraction Methods 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 3
- 230000002035 prolonged effect Effects 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000008859 change Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 239000000284 extract Substances 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/669—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for liquid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
- F04D29/628—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for liquid pumps
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention relates to the technical field of centrifugal pump components and discloses an anti-cavitation centrifugal pump auxiliary device which comprises a bottom plate for supporting a centrifugal pump, wherein a first mounting frame is fixedly connected to the right side of the top of the bottom plate, a centrifugal pump body for conveying liquid is fixedly connected to the top of the first mounting frame, a device main body is arranged on the left side of the top of the bottom plate, the device main body comprises a processing device, the processing device is arranged on the left side of the top of the bottom plate and is used for processing bubbles in water pumped out by the centrifugal pump body, the bubbles in the water are prevented from entering the centrifugal pump body to cause cavitation so as to damage the centrifugal pump body, the service life and the conveying efficiency of the device are reduced, the service life and the conveying efficiency of the device are improved, and the device has the advantages of being convenient for users to use, the service life and the conveying efficiency of the device are reduced, the manufacturing cost of the device is reduced, the use is convenient for the users and the like.
Description
Technical Field
The invention relates to the technical field of centrifugal pump components, in particular to an anti-cavitation centrifugal pump auxiliary device.
Background
The centrifugal pump is used for extracting liquid or other materials by utilizing the centrifugal force generated by the high-speed rotation of the impeller, has large application amount and wide application range, and is widely applied to agricultural irrigation, municipal water supply, power station circulating water supply, urban pollution treatment and the like besides industrial application.
The utility model discloses a CN216241499U discloses an anti-cavitation flow guiding structure suitable for centrifugal pump, and its characterized in that is applicable to the anti-cavitation flow guiding structure of centrifugal pump includes liquid flow guiding structure and bubble flow guiding structure, liquid flow guiding structure is provided with the multichannel and is located the liquid flow guiding channel of shell inboard, bubble flow guiding structure is provided with the multichannel and is located the bubble flow guiding channel at the impeller back, liquid flow guiding channel and bubble flow guiding channel are protruding in shell inboard surface and impeller back respectively, and liquid flow guiding channel is reverse flow direction, from outside to interior, increases gradually, and the device is through the circulation replenishment of backward flow, plays the inhibition bubble and produces the effect. The fusion application of the two structures can effectively improve the working efficiency and the working life of the centrifugal pump, however, in actual use, the device and the existing equipment can only inhibit the generation of bubbles, and no treatment measures exist for cavitation generated bubbles entering the impeller, so that the device can still be seriously damaged after a period of operation, and the device has a further improvement space for the treatment capacity of cavitation phenomena on the bubbles.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides an auxiliary device of a centrifugal pump for preventing cavitation, which has the advantages of prolonging the service life and conveying efficiency of the device, reducing the manufacturing cost of the device, facilitating the use of users and the like.
The centrifugal pump auxiliary device for preventing cavitation comprises a bottom plate, a first mounting frame, a centrifugal pump body, an output rod, an impeller, a conveying pipe, a discharging pipe, an equipment main body, a processing device, a second mounting frame, a water inlet pipe, a movable plate, a thorn column, a connecting pipe, a through rod, a screw rod, a first movable wheel, a first shaft rod, a driving device, a rotary driving component, a rotary shaft, a first fluted disc, a second shaft rod, a second fluted disc, a second movable wheel, a movable belt, a connecting rod, a first bevel gear, an auxiliary device, a movable disc, a rotary column, a fixed rod, a second bevel gear, a second fluted disc, a movable rod, a piston plate, a conveying bin, an ejector pipe, a first one-way valve, an extraction pipe, a second one-way valve and a guide pipe.
The centrifugal pump auxiliary device for preventing cavitation comprises a bottom plate for supporting a centrifugal pump, wherein a first mounting frame is fixedly connected to the right side of the top of the bottom plate, a centrifugal pump body for conveying liquid is fixedly connected to the top of the first mounting frame, and an equipment main body is arranged at the left side of the top of the bottom plate and comprises:
The treatment device is arranged at the left side of the top of the bottom plate and is used for treating bubbles in water pumped out by the centrifugal pump body, so that the centrifugal pump body is prevented from being damaged due to cavitation caused by the bubbles in the water entering the centrifugal pump body, the service life and the conveying efficiency of the device are reduced, the service life and the conveying efficiency of the device are improved, and the use of a user is facilitated;
The driving device is fixedly connected to the top of the processing device and is used for providing power for starting and stopping of each component, meanwhile, the driving device can be matched with the following components to lift the liquid flow pressure during the operation of the centrifugal pump body, the service life and the conveying efficiency of the device are improved, and the device is convenient for users to use;
The auxiliary device is arranged at the bottom of the driving device and is used for lifting the liquid flow pressure inside the centrifugal pump body in cooperation with the driving device, so that the phenomenon that a large number of bubbles are easily generated in the centrifugal pump body due to small liquid flow pressure inside the centrifugal pump body when the centrifugal pump body runs and the bubbles collide inside the centrifugal pump body to cause cavitation erosion is avoided, the efficiency of conveying water by the device is reduced, the service life and the conveying efficiency of the lifting device are prolonged, and the use of a user is facilitated.
Preferably, the bottom plate further comprises an output rod which is fixedly connected to the left output end of the centrifugal pump body, one end of the output rod, which is far away from the centrifugal pump body, is fixedly connected with an impeller, a conveying pipe is arranged on the outer surface of the output rod, the right end surface of the conveying pipe is fixedly connected to the left end of the centrifugal pump body, a discharge pipe is fixedly connected to the top of the conveying pipe, and the discharge pipe is arranged at the top of the impeller, so that the normal operation of the device is ensured.
Preferably, the processing device comprises a second mounting frame which is fixedly connected to the left side of the top of the bottom plate, the processing device is arranged as a rectangular pipe which is longitudinally placed, a water inlet pipe is fixedly connected to the top side of the left end surface of the processing device, a connecting pipe is fixedly connected to the bottom side of the right end surface of the processing device, a movable plate is arranged in the processing device, the shape and the size of the movable plate are matched with those of the processing device, a plurality of thorn columns are fixedly connected to the bottom of the movable plate, and the normal operation of the device is guaranteed.
Preferably, the processing device further comprises a through rod fixedly connected to the top of the movable plate, the through rod penetrates through the processing device and extends to the outer side of the top of the processing device, a screw rod is arranged at the top of the through rod and is in threaded connection with the through rod, a first movable wheel is fixedly connected to the top of the screw rod, a first shaft rod is fixedly connected to the top of the first movable wheel, the top of the first shaft rod is rotationally connected to the top inner wall of the driving device, and the first shaft rod, the first movable wheel and the screw rod are all arranged in the driving device to ensure normal operation of the device.
Preferably, the driving device comprises a rotary driving assembly which is fixedly connected to the center of the inner wall of the top side of the driving device, the rotary driving assembly is arranged as a driving motor, a rotating shaft is fixedly connected to the bottom output end of the rotary driving assembly, one end of the rotating shaft, far away from the rotary driving assembly, is fixedly connected with a first fluted disc, and the first fluted disc is only provided with half teeth, so that the normal operation of the device is ensured.
Preferably, the driving device further comprises a first groove returning plate which is arranged at the outer surface of the first fluted disc, a plurality of clamping teeth are fixedly connected to the inner part of the first groove returning plate, the first groove returning plate is connected with the first fluted disc in a meshed mode, a plurality of clamping teeth are fixedly connected to the right end surface of the first groove returning plate, the number of teeth of the position is larger than that of the right end inner wall of the first groove returning plate, and the first groove returning plate is subjected to limit processing in the driving device, so that normal operation of the device is guaranteed.
Preferably, the driving device further comprises a second shaft rod, the second shaft rod is rotationally connected to the top inner wall of the driving device, the second shaft rod is arranged on the right side of the rotary driving assembly, the first shaft rod is arranged on the left side of the rotary driving assembly, a second fluted disc is fixedly connected to the outer surface of the second shaft rod, the second fluted disc is meshed with the right end surface of the first groove plate, a second movable wheel is fixedly connected to the bottom of the second shaft rod, a movable belt is movably connected to the outer surface of the first movable wheel and the second movable wheel, a connecting rod is fixedly connected to the bottom of the second movable wheel, one end of the connecting rod, far away from the second movable wheel, is fixedly connected with a first bevel gear, and normal operation of the device is guaranteed.
Preferably, the auxiliary device is arranged into an annular sealing bin, the auxiliary device comprises two movable disks which are respectively arranged at the front side and the rear side of the top of the auxiliary device, the two movable disks are respectively arranged at the front end and the rear end of the first bevel gear, one ends of the two movable disks close to the first bevel gear are fixedly connected with a fixing rod, one ends of the fixing rods away from the movable disks are fixedly connected with a second bevel gear, the second bevel gear is meshed with the first bevel gear and connected with a rotating column, one ends of the two movable disks away from the fixing rod are fixedly connected with a second groove plate, and the outer surface of the rotating column is movably connected with a second groove plate, so that the normal operation of the device is ensured.
Preferably, the auxiliary device further comprises two movable rods which are respectively and fixedly connected to the bottoms of the two second groove plates, a conveying bin is arranged at the bottom of each movable rod, each movable rod extends to the inside of the conveying bin, a piston plate is fixedly connected to the extending part of each movable rod, an extraction pipe is fixedly connected to the left end of each conveying bin, the other end of each extraction pipe is fixedly connected to the right side surface of the processing device, a second one-way valve is fixedly connected to the connecting part of each extraction pipe and each conveying bin, and normal operation of the device is guaranteed.
Preferably, the auxiliary device further comprises two injection pipes which are respectively and fixedly connected to the bottoms of the two conveying bins, the other ends of the injection pipes are fixedly connected to the top of the auxiliary device, the connecting part of the injection pipes and the conveying bins is fixedly connected with a first one-way valve, one end of the auxiliary device, which is close to the impeller, is obliquely and fixedly connected with a plurality of guide pipes, and the oblique directions of the guide pipes face the edge of the impeller, so that the normal operation of the device is ensured.
Advantageous effects
1. This centrifugal pump auxiliary device for cavitation prevention carries water through opening processing apparatus auxiliary impeller, promotes device's conveying efficiency, and the device punctures the bubble that floats simultaneously, extracts water and only extracts the water that processing apparatus lower floor does not have the bubble and avoid the bubble striking to produce the phenomenon of cavitation at the impeller surface, promotes device's life and conveying efficiency, and the user of being convenient for uses.
2. This centrifugal pump auxiliary device for preventing cavitation increases the feed water pressure of impeller through opening auxiliary device, and its inside liquid stream pressure is less when avoiding the operation of centrifugal pump body and leads to water to produce a large amount of bubbles in wherein easily, and the bubble striking takes place the phenomenon of cavitation in the inside of centrifugal pump body to lead to the efficiency of device transportation water to reduce, hoisting device's life and conveying efficiency, the user of being convenient for uses.
3. According to the auxiliary device of the centrifugal pump for cavitation prevention, the driving device is started, so that the device only uses one driving source to complete the steps of puncturing bubbles, assisting the impeller to convey water and increasing the impeller inlet pressure, the manufacturing cost of the device is reduced, the compactness of the structure of the device is improved, the operation condition of the device is more stable, and the device is convenient for a user to use.
Drawings
FIG. 1 is a schematic view showing the external appearance and structure of an auxiliary device of a centrifugal pump for preventing cavitation;
FIG. 2 is a schematic side view of an auxiliary device of a centrifugal pump for preventing cavitation according to the present invention;
FIG. 3 is a schematic view showing the internal structure of an auxiliary device of a centrifugal pump for preventing cavitation according to the present invention;
FIG. 4 is a schematic view showing the structure of an auxiliary device for a centrifugal pump for preventing cavitation according to the present invention;
FIG. 5 is a schematic view of a first groove plate of an auxiliary device of a centrifugal pump for preventing cavitation;
FIG. 6 is a schematic view of a second shaft of an auxiliary device of a centrifugal pump for preventing cavitation according to the present invention;
FIG. 7 is a schematic view of a second bevel gear of an anti-cavitation centrifugal pump assist apparatus according to the present invention;
Fig. 8 is a schematic structural view of an auxiliary device of the centrifugal pump for preventing cavitation.
1, Bottom plate, 10, first mounting frame, 11, centrifugal pump body, 110, output rod, 111, impeller, 12, conveying pipe, 120, discharging pipe, 2, equipment main body, 3, processing device, 30, second mounting frame, 300, water inlet pipe, 31, movable plate, 310, thorn post, 32, connecting pipe, 33, through rod, 330, screw, 34, first movable wheel, 35, first shaft rod, 4, driving device, 40, rotary driving component, 41, rotary shaft, 410, first fluted disc, 411, first groove plate, 42, second shaft rod, 420, second fluted disc, 43, second movable wheel, 430, movable belt, 44, connecting rod, 45, first bevel gear, 5, auxiliary device, 50, movable disc, 500, rotary post, 501, fixed rod, 502, second bevel gear, 51, second groove plate, 510, movable rod, 511, plate, 52, conveying bin, 520, jet pipe, 521, first one-way valve, 522, pumping pipe, 523, second one-way valve, and guide pipe.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
Referring to fig. 1 to 8, an anti-cavitation centrifugal pump auxiliary device includes a base plate 1 for supporting a centrifugal pump, a first mounting frame 10 is fixedly connected to a right side of a top of the base plate 1, a centrifugal pump body 11 for conveying liquid is fixedly connected to a top of the first mounting frame 10, an equipment main body 2 is disposed at a left side of a top of the base plate 1, and the equipment main body 2 includes:
the treatment device 3 is arranged at the left side of the top of the bottom plate 1, the treatment device 3 is used for treating bubbles in water pumped out by the centrifugal pump body 11, so that the bubbles in the water are prevented from entering the centrifugal pump body 11 to cause cavitation erosion, the centrifugal pump body 11 is damaged, the service life and the conveying efficiency of the device are reduced, the service life and the conveying efficiency of the device are improved, and the use by a user is facilitated;
The driving device 4 is fixedly connected to the top of the processing device 3, the driving device 4 is used for providing power for starting and stopping of each component, meanwhile, the driving device 4 can be matched with the following components to lift the liquid flow pressure when the centrifugal pump body 11 runs, the service life and the conveying efficiency of the device are improved, and the device is convenient for users to use;
Auxiliary device 5, it sets up in the bottom of drive arrangement 4, and auxiliary device 5 is used for promoting centrifugal pump body 11 inside liquid stream pressure with drive arrangement 4 cooperation, and its inside liquid stream pressure is less when avoiding centrifugal pump body 11 to operate and leads to water to produce a large amount of bubbles therein easily, and the bubble striking takes place the phenomenon of cavitation in centrifugal pump body 11 inside to lead to the efficiency of device transportation water to reduce, hoisting device's life and conveying efficiency, the user of being convenient for uses.
The bottom plate 1 still includes output rod 110, and its fixed connection is in the left side output department of centrifugal pump body 11, and output rod 110 keeps away from centrifugal pump body 11's one end fixedly connected with impeller 111, and output rod 110's surface department is provided with conveyer pipe 12, and conveyer pipe 12's right-hand member surface fixed connection is in centrifugal pump body 11's left end department, and conveyer pipe 12's top fixedly connected with row send pipe 120, row send pipe 120 setting is at impeller 111's top, guarantees the normal operating of device.
The processing apparatus 3 includes second mounting bracket 30, its fixed connection is in the top left side department of bottom plate 1, processing apparatus 3 sets up to the rectangular pipe of vertical placing, the top side department fixedly connected with inlet tube 300 of processing apparatus 3 left end surface, the bottom side department fixedly connected with connecting pipe 32 of processing apparatus 3 right-hand member surface, the inside of processing apparatus 3 is provided with fly leaf 31, fly leaf 31's shape and size all with processing apparatus 3 looks adaptation, the bottom fixedly connected with thorn post 310 of fly leaf 31, guarantee the normal operating of device.
The processing device 3 further comprises a through rod 33 fixedly connected to the top of the movable plate 31, the through rod 33 penetrates through the processing device 3 and extends to the outer side of the top of the processing device 3, a screw rod 330 is arranged at the top of the through rod 33, the screw rod 330 is in threaded connection with the through rod 33, a first movable wheel 34 is fixedly connected to the top of the screw rod 330, a first shaft rod 35 is fixedly connected to the top of the first movable wheel 34, the top of the first shaft rod 35 is rotatably connected to the inner wall of the top side of the driving device 4, and the first shaft rod 35, the first movable wheel 34 and the screw rod 330 are all arranged inside the driving device 4 to ensure the normal operation of the device.
Example two
Referring to fig. 1 to 8, further on the basis of the first embodiment, the driving device 4 includes a rotary driving assembly 40 fixedly connected to the center of the inner wall of the top side of the driving device 4, the rotary driving assembly 40 is configured as a driving motor, a rotation shaft 41 is fixedly connected to the bottom output end of the rotary driving assembly 40, one end of the rotation shaft 41 away from the rotary driving assembly 40 is fixedly connected to a first fluted disc 410, and only half of the teeth are provided on the first fluted disc 410, so that the normal operation of the device is ensured.
The driving device 4 further comprises a first groove returning plate 411, the first groove returning plate 411 is arranged at the outer surface of the first fluted disc 410, a plurality of clamping teeth are fixedly connected inside the first groove returning plate 411, the first groove returning plate 411 is connected with the first fluted disc 410 in a meshed mode, a plurality of clamping teeth are fixedly connected at the right end surface of the first groove returning plate 411, the number of teeth at the position is larger than that at the inner wall of the right end of the first groove returning plate 411, and the first groove returning plate 411 performs limit processing in the driving device 4 to ensure normal operation of the device.
The driving device 4 further comprises a second shaft rod 42 which is rotatably connected to the top side inner wall of the driving device 4, the second shaft rod 42 is arranged on the right side of the rotary driving assembly 40, the first shaft rod 35 is arranged on the left side of the rotary driving assembly 40, a second fluted disc 420 is fixedly connected to the outer surface of the second shaft rod 42, the second fluted disc 420 is meshed with the right end surface of the first groove plate 411, a second movable wheel 43 is fixedly connected to the bottom of the second shaft rod 42, a movable belt 430 is movably connected to the outer surface of the first movable wheel 34 and the second movable wheel 43, a connecting rod 44 is fixedly connected to the bottom of the second movable wheel 43, and a first bevel gear 45 is fixedly connected to one end, far away from the second movable wheel 43, of the connecting rod 44, so that the normal operation of the device is guaranteed.
Example III
Referring to fig. 1 to 8, further on the basis of the second embodiment, the auxiliary device 5 is provided with an annular sealing cabin, the auxiliary device 5 includes two movable discs 50 respectively disposed at the front side and the rear side of the top of the auxiliary device 5, the two movable discs 50 are respectively disposed at the front end and the rear end of the first bevel gear 45, one ends of the two movable discs 50 close to the first bevel gear 45 are fixedly connected with a fixed rod 501, one ends of the fixed rod 501 far away from the movable discs 50 are fixedly connected with a second bevel gear 502, the second bevel gear 502 is engaged with the first bevel gear 45, one ends of the two movable discs 50 far away from the fixed rod 501 are fixedly connected with a rotating column 500, and the outer surface of the rotating column 500 is movably connected with a second groove plate 51, so that normal operation of the device is ensured.
The auxiliary device 5 further comprises two movable rods 510 which are respectively and fixedly connected to the bottoms of the two second groove plates 51, a conveying bin 52 is arranged at the bottom of each movable rod 510, each movable rod 510 extends to the inside of each conveying bin 52, a piston plate 511 is fixedly connected to the extending part of each movable rod 510, an extraction pipe 522 is fixedly connected to the left end of each conveying bin 52, the other end of each extraction pipe 522 is fixedly connected to the right side surface of the processing device 3, and a second one-way valve 523 is fixedly connected to the joint of each extraction pipe 522 and each conveying bin 52, so that the normal operation of the device is ensured.
The auxiliary device 5 further comprises two injection pipes 520 which are respectively and fixedly connected to the bottoms of the two conveying bins 52, the other ends of the injection pipes 520 are fixedly connected to the top of the auxiliary device 5, the connection part of the injection pipes 520 and the conveying bins 52 is fixedly connected with a first one-way valve 521, one end, close to the impeller 111, of the auxiliary device 5 is obliquely and fixedly connected with a plurality of guide pipes 53, and the oblique direction of the guide pipes 53 faces the edge of the impeller 111, so that the normal operation of the device is ensured.
Working principle: the centrifugal pump body 11 is started, the centrifugal pump body 11 is started to drive the output rod 110 to rotate, the output rod 110 rotates to drive the impeller 111 to rotate, the impeller 111 rotates to convey external water into the conveying pipe 12 through the water inlet pipe 300 under the action of centrifugal force, the rotary driving assembly 40 in the driving device 4 is started in the process, the rotary driving assembly 40 is started to drive the rotary shaft 41 to rotate, the rotary shaft 41 rotates to drive the first fluted disc 410 to rotate, the first fluted disc 410 only has half of the teeth, at the moment, the first fluted disc 410 rotates to drive the first fluted disc 411 to do reciprocating rectilinear motion in the driving device 4, the first fluted disc 411 linearly reciprocates to drive the second fluted disc 420 to rotate through the teeth on the right side surface of the first fluted disc 411, and the number of teeth on the right side surface of the first fluted disc 411 is larger than the teeth on the right side inner wall of the first fluted disc 411, that is, the first slot returning plate 411 will drive the second fluted disc 420 to rotate for several circles and then rotate for several circles to reset, the second fluted disc 420 will drive the second movable wheel 43 to rotate through the second shaft rod 42, the second movable wheel 43 rotates to drive the first movable wheel 34 to rotate through the movable belt 430, the first movable wheel 34 rotates to drive the screw 330 to rotate through the first shaft rod 35, the screw 330 rotates to drive the through rod 33 to move downwards, the through rod 33 moves to drive the movable plate 31 and the thorn post 310 to move downwards in the treatment device 3, the screw 330 and the through rod 33 are limited in size so that only can drive the movable plate 31 and the thorn post 310 to move to the middle of the treatment device 3, since water passes through the treatment device 3 before entering the conveying pipe 12, water is accumulated after entering the treatment device 3 from the water inlet pipe 300, and since the density of air in water is small, in the continuous accumulation process of water, bubbles gradually float to the top of the water surface, the top of the bubbles are pierced by the downward pressure of the movable plate 31 and the piercing post 310, the centrifugal force generated by the rotation of the impeller 111 pumps the water out of the treatment device 3 through the connecting pipe 32 and conveys the water into the auxiliary device 5 and the conveying pipe 12, the downward pressure of the movable plate 31 and the piercing post 310 can also push the water out of the auxiliary device 5 and the conveying pipe 12 through the connecting pipe 32, the auxiliary impeller 111 conveys the water, the transportation efficiency of the device is improved, meanwhile, the device pierces the floating bubbles, pumps the water only, and the phenomenon that cavitation is generated on the surface of the impeller 111 due to the impact of the bubbles on the water without bubbles at the lower layer of the treatment device 3 is avoided, the service life and the transportation efficiency of the device are improved, and the use is convenient for users;
When the second movable wheel 43 rotates, the first bevel gear 45 is driven to rotate by the connecting rod 44, the first bevel gear 45 rotates to drive the two second bevel gears 502 to rotate, the second bevel gears 502 rotate to drive the movable disc 50 and the rotating column 500 to rotate by the fixed rod 501, the rotating column 500 rotates to drive the second groove returning plate 51 to do linear reciprocating motion, the second groove returning plate 51 moves to drive the movable rod 510 and the piston plate 511 to do linear reciprocating motion, the directions of each linear reciprocating motion of the two piston plates 511 are opposite, the piston plates 511 move to change the air pressure in the conveying bin 52, when the piston plates 511 move upwards, the air pressure change in the conveying bin 52 pumps water in the treatment device 3 into the conveying bin 52 by the pumping pipe 522, the second one-way valve 523 is used for avoiding water backflow in the auxiliary device 5, when the piston plates 511 move downwards, the air pressure in the conveying bin 52 is increased to convey the water into the auxiliary device 5 by the spraying pipe 520, the first check valve 521 is used to avoid water from flowing back into the treatment device 3, after the auxiliary device 5 is filled with water, a part of water can be sprayed to the edge of the impeller 111 from the guide pipes 53 through the delivery of the injection pipe 520, because the movement directions of the piston plates 511 in the two delivery bins 52 are opposite, the auxiliary device 5 can spray water flow to the edge of the impeller 111 through the flow guide pipe at any time, by injecting fluid with a certain pressure into the impeller 111, the pressure of the outer edge of the blade of the impeller 111 and the pressure of the liquid flow entering the impeller 111 are improved, the necessary cavitation allowance of the centrifugal pump is reduced, thereby avoiding cavitation, and most of water enters the delivery pipe 12 through the connection pipe 32 and the auxiliary device 5 through the rotation of the impeller 111, and then the water is delivered into the discharge pipe 120 through the delivery pipe 12, the device avoids the phenomenon that when the centrifugal pump body 11 runs, a large amount of bubbles are easily generated in water due to the fact that the internal liquid flow pressure is smaller, and cavitation occurs when the bubbles strike the inside of the centrifugal pump body 11, so that the efficiency of conveying water by the device is reduced, the service life and the conveying efficiency of the device are improved, and the device is convenient for users to use;
when the device is operated, only one driving source is used for completing the steps of puncturing bubbles, assisting the impeller 111 to convey water and increasing the inlet pressure of the impeller 111, the manufacturing cost of the device is reduced, the compactness of the structure of the device is improved, the operation condition of the device is more stable, and the device is convenient for users to use.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (2)
1. The utility model provides a centrifugal pump auxiliary device for preventing cavitation, includes bottom plate (1) that is used for supporting the centrifugal pump, its characterized in that, the top right side department fixedly connected with first mounting bracket (10) of bottom plate (1), the top fixedly connected with of first mounting bracket (10) is used for carrying centrifugal pump body (11) of liquid, and the top left side department of bottom plate (1) is provided with equipment main part (2), equipment main part (2) include:
The treatment device (3) is arranged at the left side of the top of the bottom plate (1), the treatment device (3) is used for treating bubbles in water pumped out by the centrifugal pump body (11), so that the centrifugal pump body (11) is prevented from being damaged due to cavitation caused by the bubbles in the water entering the centrifugal pump body (11), the service life and the conveying efficiency of the device are reduced, the service life and the conveying efficiency of the device are improved, and the use by a user is facilitated;
The treatment device (3) comprises a second mounting frame (30) which is fixedly connected to the left side of the top of the bottom plate (1), the treatment device (3) is arranged into a rectangular pipe which is longitudinally placed, the top side of the left end surface of the treatment device (3) is fixedly connected with a water inlet pipe (300), the bottom side of the right end surface of the treatment device (3) is fixedly connected with a connecting pipe (32), a movable plate (31) is arranged in the treatment device (3), the shape and the size of the movable plate (31) are matched with those of the treatment device (3), and a plurality of thorn columns (310) are fixedly connected to the bottom of the movable plate (31);
The processing device (3) further comprises a through rod (33), the through rod (33) is fixedly connected to the top of the movable plate (31), the through rod (33) penetrates through the processing device (3) and extends to the outer side of the top of the processing device (3), a screw rod (330) is arranged at the top of the through rod (33), the screw rod (330) is in threaded connection with the through rod (33), a first movable wheel (34) is fixedly connected to the top of the screw rod (330), a first shaft rod (35) is fixedly connected to the top of the first movable wheel (34), the top of the first shaft rod (35) is rotatably connected to the inner wall of the top side of the driving device (4), and the first shaft rod (35), the first movable wheel (34) and the screw rod (330) are all arranged inside the driving device (4);
The driving device (4) is fixedly connected to the top of the processing device (3), the driving device (4) is used for providing power for starting and stopping of each component, meanwhile, the driving device (4) can also be matched with a subsequent component to lift the liquid flow pressure when the centrifugal pump body (11) runs, the service life and the conveying efficiency of the device are improved, and the device is convenient for a user to use;
The driving device (4) comprises a rotary driving assembly (40), the rotary driving assembly (40) is fixedly connected to the center of the inner wall of the top side of the driving device (4), the rotary driving assembly (40) is arranged as a driving motor, a rotating shaft (41) is fixedly connected to the bottom output end of the rotary driving assembly (40), a first fluted disc (410) is fixedly connected to one end, far away from the rotary driving assembly (40), of the rotating shaft (41), and only half of the teeth are arranged on the first fluted disc (410);
The driving device (4) further comprises a first groove returning plate (411) which is arranged at the outer surface of the first fluted disc (410), a plurality of clamping teeth are fixedly connected inside the first groove returning plate (411), the first groove returning plate (411) is connected with the first fluted disc (410) in a meshed mode, a plurality of clamping teeth are fixedly connected at the right end surface of the first groove returning plate (411), the number of teeth at the position is larger than the number of teeth at the inner wall of the right end of the first groove returning plate (411), and the first groove returning plate (411) performs limit processing in the driving device (4);
The driving device (4) further comprises a second shaft rod (42), the second shaft rod is rotationally connected to the top inner wall of the driving device (4), the second shaft rod (42) is arranged on the right side of the rotary driving assembly (40), the first shaft rod (35) is arranged on the left side of the rotary driving assembly (40), a second fluted disc (420) is fixedly connected to the outer surface of the second shaft rod (42), the second fluted disc (420) is meshed with the right end surface of the first groove plate (411), a second movable wheel (43) is fixedly connected to the bottom of the second shaft rod (42), a movable belt (430) is movably connected to the outer surface of the first movable wheel (34) and the second movable wheel (43), a connecting rod (44) is fixedly connected to the bottom of the second movable wheel (43), and one end, far away from the second movable wheel (43), of the connecting rod (44) is fixedly connected with a first bevel gear (45);
The auxiliary device (5) is arranged at the bottom of the driving device (4), the auxiliary device (5) is used for lifting the liquid flow pressure in the centrifugal pump body (11) in cooperation with the driving device (4), so that a large number of bubbles are easily generated in water due to the fact that the liquid flow pressure in the centrifugal pump body (11) is small when the centrifugal pump body (11) operates, the bubbles collide in the centrifugal pump body (11) to cause cavitation, the efficiency of conveying water by the device is reduced, the service life and the conveying efficiency of the device are prolonged, and the device is convenient for users to use;
The auxiliary device (5) is arranged into an annular sealing bin, the auxiliary device (5) comprises two movable discs (50) which are respectively arranged at the front side and the rear side of the top of the auxiliary device (5), the two movable discs (50) are respectively arranged at the front end and the rear end of the first bevel gear (45), one ends of the two movable discs (50) close to the first bevel gear (45) are fixedly connected with a fixed rod (501), one ends of the fixed rods (501) far away from the movable discs (50) are fixedly connected with a second bevel gear (502), the second bevel gear (502) is in meshed connection with the first bevel gear (45), one ends of the two movable discs (50) far away from the fixed rod (501) are fixedly connected with a rotating column (500), and the outer surface of the rotating column (500) is movably connected with a second groove plate (51);
The auxiliary device (5) further comprises two movable rods (510) which are respectively and fixedly connected to the bottoms of the two second groove plates (51), a conveying bin (52) is arranged at the bottom of each movable rod (510), each movable rod (510) extends to the inside of each conveying bin (52), a piston plate (511) is fixedly connected to the extending part of each movable rod (510), an extraction pipe (522) is fixedly connected to the left end of each conveying bin (52), the other end of each extraction pipe (522) is fixedly connected to the right side surface of the corresponding processing device (3), and a second one-way valve (523) is fixedly connected to the connecting part of each extraction pipe (522) and each conveying bin (52);
The auxiliary device (5) further comprises two injection pipes (520), wherein the two injection pipes are respectively and fixedly connected to the bottoms of the two conveying bins (52), the other ends of the injection pipes (520) are fixedly connected to the top of the auxiliary device (5), the first check valve (521) is fixedly connected to the connection position of the injection pipes (520) and the conveying bins (52), one end, close to the impeller (111), of the auxiliary device (5) is obliquely and fixedly connected with a plurality of guide pipes (53) and the oblique direction of the guide pipes (53) faces the edge of the impeller (111).
2. The centrifugal pump auxiliary device for preventing cavitation according to claim 1, wherein the bottom plate (1) further comprises an output rod (110) fixedly connected to the left output end of the centrifugal pump body (11), one end of the output rod (110) away from the centrifugal pump body (11) is fixedly connected with an impeller (111), a conveying pipe (12) is arranged on the outer surface of the output rod (110), the right end surface of the conveying pipe (12) is fixedly connected to the left end of the centrifugal pump body (11), a discharge pipe (120) is fixedly connected to the top of the conveying pipe (12), and the discharge pipe (120) is arranged at the top of the impeller (111).
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| CN202411230814.4A CN118775347B (en) | 2024-09-04 | 2024-09-04 | A centrifugal pump auxiliary device for anti-cavitation |
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| CN202411230814.4A CN118775347B (en) | 2024-09-04 | 2024-09-04 | A centrifugal pump auxiliary device for anti-cavitation |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105889117A (en) * | 2016-06-15 | 2016-08-24 | 辽宁石油化工大学 | Gas etching prevention type centrifugal pump and operating method thereof |
| CN113309708A (en) * | 2021-05-26 | 2021-08-27 | 杨继承 | Vortex-proof centrifugal pump |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU747592B2 (en) * | 1998-03-13 | 2002-05-16 | Unitec Institute Of Technology | Improved pumping apparatus and methods |
| KR20100084780A (en) * | 2009-01-19 | 2010-07-28 | 지효근 | A pump with a vacuum self-priming pump whit a device for the deflation of air |
| CN207814052U (en) * | 2018-01-08 | 2018-09-04 | 浙江理工大学 | A kind of centrifugal pump inhibiting cavitation |
| JP7488120B2 (en) * | 2020-06-11 | 2024-05-21 | 株式会社荏原製作所 | Cavitation suppression device and centrifugal pump |
| DE102021105727A1 (en) * | 2021-03-10 | 2022-09-15 | KSB SE & Co. KGaA | Centrifugal pump with inlet ribs |
| CN221373940U (en) * | 2024-01-24 | 2024-07-19 | 杭州金氏泵业有限公司 | Circulating fluid axial flow pump with cavitation-resistant structure |
| CN118224099B (en) * | 2024-05-21 | 2024-07-30 | 烟台龙港泵业股份有限公司 | Combined centrifugal pump |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105889117A (en) * | 2016-06-15 | 2016-08-24 | 辽宁石油化工大学 | Gas etching prevention type centrifugal pump and operating method thereof |
| CN113309708A (en) * | 2021-05-26 | 2021-08-27 | 杨继承 | Vortex-proof centrifugal pump |
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Effective date of registration: 20241230 Address after: 400000 community 4, Xishan village, Huayan Town, Jiulongpo District, Chongqing Applicant after: Chongqing hesun Pump Co.,Ltd. Country or region after: China Address before: No. 29, Changjiang Road, Gaoyou Economic Development Zone, Yangzhou City, Jiangsu Province 225600 Applicant before: GAOYOU CHANGHE PUMPS CO.,LTD. Country or region before: China |
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