CN117072451A - Low-noise axial flow pump - Google Patents
Low-noise axial flow pump Download PDFInfo
- Publication number
- CN117072451A CN117072451A CN202311072970.8A CN202311072970A CN117072451A CN 117072451 A CN117072451 A CN 117072451A CN 202311072970 A CN202311072970 A CN 202311072970A CN 117072451 A CN117072451 A CN 117072451A
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- Prior art keywords
- transmission
- axial flow
- flow pump
- eccentric wheel
- brush plate
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- 230000005540 biological transmission Effects 0.000 claims abstract description 125
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 24
- 230000007246 mechanism Effects 0.000 claims abstract description 22
- 239000012535 impurity Substances 0.000 claims abstract description 18
- 238000001914 filtration Methods 0.000 claims abstract description 9
- 230000009471 action Effects 0.000 claims abstract description 6
- 230000006835 compression Effects 0.000 claims description 22
- 238000007906 compression Methods 0.000 claims description 22
- 238000003825 pressing Methods 0.000 claims description 17
- 230000008878 coupling Effects 0.000 claims description 9
- 238000010168 coupling process Methods 0.000 claims description 9
- 238000005859 coupling reaction Methods 0.000 claims description 9
- 239000010865 sewage Substances 0.000 claims description 8
- 230000000903 blocking effect Effects 0.000 claims description 6
- 230000007774 longterm Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 9
- 238000004891 communication Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 208000024891 symptom Diseases 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
- F04D3/00—Axial-flow 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
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
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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
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
- F04D15/0077—Safety measures
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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
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
- F04D15/0088—Testing machines
-
- 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
- F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
- F04D29/708—Suction grids; Strainers; Dust separation; Cleaning specially for liquid pumps
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The application discloses a low-noise axial flow pump, which belongs to the field of axial flow pumps, and comprises a pump body and a motor connected with the pump body through a coupler, wherein the pump body comprises a shell, an impeller arranged in the shell and connected with the motor through a first transmission shaft and the coupler in sequence, and a water inlet and a water outlet which are arranged on the shell, an impurity filtering and collecting mechanism is arranged on the pump body and close to the water inlet, the impurity filtering and collecting mechanism comprises a filter screen arranged at the water inlet, a transmission assembly synchronously rotating with the impeller, a reciprocating assembly horizontally reciprocating under the action of the transmission assembly, and a brush plate with one side connected with the reciprocating assembly, and the other side of the brush plate is attached to the surface of the filter screen; the position on the pump body corresponding to the brush plate is provided with a dirt collecting assembly communicated with the water inlet. The low-noise axial flow pump with the structure can collect impurities on the filter screen while the operation of the axial flow pump is not influenced, and ensures the long-term, stable and low-noise operation of the axial flow pump.
Description
Technical Field
The application relates to the technical field of axial flow pumps, in particular to a low-noise axial flow pump.
Background
The common water supply pumps mainly comprise three main types of centrifugal pumps, axial flow pumps and submersible pumps. The axial flow pump is a pump which utilizes the acting force generated by the rotating blades to enable liquid to be conveyed from bottom to top along the axial direction, and is widely used in a plurality of fields such as water mixing engineering, flood control and drainage, agricultural irrigation and the like due to the characteristics of large flow, low lift, small volume, low construction cost, high efficiency and the like.
At present, the axial flow pump has the following noise caused by mechanical reasons in the working process and corresponding prior art solutions:
1. the impurity is inhaled, in order to solve this problem prior art mostly installs the filter screen in axial-flow pump entrance, but impurity is easily piled up in filter screen department, influences axial-flow pump's normal work. Further, to solve the problem of impurity accumulation at the filter screen, the prior art includes: CN202111041533.0 discloses a novel axial-flow pump with stable low noise operation, which comprises a pump body, the center of the pump body rotates and is connected with the motor shaft, the top periphery of motor shaft rotates and is connected with the bearing body, the middle part fixedly connected with impeller of motor shaft, the end cover has been cup jointed to the bottom of the pump body, the bottom inner wall fixedly connected with fixed disk of the pump body. This novel axial-flow pump of low noise operation stability, when the pump body finishes the operation, receives the spring force effect, and the movable disk moves down and resets, cooperates the hinge rod transmission, keeps away from dorsad between the slider, makes the filter screen downside push out and piles up debris, reaches the effect of pushing out debris after the operation, improves the filter effect of equipment. By adopting the mode, accumulated sundries can be treated only after shutdown, and the problem of untimely treatment exists.
2. The coupler is worn, and the noise-proof cover is arranged on the pump body outer cover in the prior art aiming at the problem, so that the maintenance difficulty of the pump body can be increased, and the problem that the symptoms are not cured exists.
In summary, there is currently a lack of comprehensive treatment techniques for noise generated by axial flow pumps.
Disclosure of Invention
In order to solve the problems, the application provides the low-noise axial flow pump, which can collect impurities on the filter screen while the operation of the axial flow pump is not influenced, and ensures the long-term, stable and low-noise operation of the axial flow pump.
In order to achieve the above purpose, the application provides a low-noise axial flow pump, which comprises a pump body and a motor connected with the pump body through a coupler, wherein the pump body comprises a shell, an impeller arranged in the shell and connected with the motor through a first transmission shaft and the coupler in sequence, and a water inlet and a water outlet which are arranged on the shell, an impurity filtering and collecting mechanism is arranged on the pump body and close to the water inlet, the impurity filtering and collecting mechanism comprises a filter screen arranged at the water inlet, a transmission assembly synchronously rotating with the impeller, a reciprocating assembly horizontally reciprocating under the action of the transmission assembly, and a brush plate with one side connected with the reciprocating assembly, and the other side of the brush plate is attached to the surface of the filter screen;
the position on the pump body corresponding to the brush plate is provided with a dirt collecting assembly communicated with the water inlet.
Preferably, the transmission assembly comprises a second transmission shaft and a transmission gear, one end of the second transmission shaft is fixedly connected with one end of the first transmission shaft far away from the motor, and the other end of the second transmission shaft penetrates through the filter screen and then is connected with the inner circumference side of the transmission gear;
the outer circumferential side of the transmission gear is provided with a transmission gear section, and the arc length of the transmission gear section is smaller than 1/2 arc length of the transmission gear;
the transmission teeth are arranged at the transmission teeth sections.
Preferably, the water inlet is connected with a square pipe through a square-change round pipe; a filter screen and a transmission gear are arranged in the square tube;
the reciprocating movement assembly comprises a transmission toothed plate which is horizontally arranged in the square tube in a sliding manner and sleeved outside the transmission gear, a transmission strip-shaped hole is formed in the transmission toothed plate and corresponds to the position of the transmission gear, and transmission racks matched with the transmission gear are arranged on the upper side and the lower side of the transmission strip-shaped hole.
Preferably, brush plates are arranged at the symmetrical two ends of one side of the transmission toothed plate facing the filter screen;
the sewage collecting assembly comprises an L-shaped communicating pipe and a sewage collecting bag, wherein the L-shaped communicating pipe and the sewage collecting bag are arranged corresponding to the brush plates at the two ends, one end of the L-shaped communicating pipe is communicated with the square pipe, and the other end of the L-shaped communicating pipe is connected with the sewage collecting bag;
one end of the L-shaped communicating pipe, which is close to the square pipe, is provided with a one-way switch door which is in linkage arrangement with the brush plate through a linkage assembly;
the cross section of the L-shaped communicating pipe is square.
Preferably, the unidirectional switch door comprises a door body with one end rotatably arranged on the inner wall of the L-shaped communicating pipe, a door blocking block is arranged on the inner wall of the L-shaped communicating pipe and corresponds to the other end of the door body, and a compression torsion spring is arranged at the rotary connection part of the L-shaped communicating pipe and the door body and used for compressing the door body on the door blocking block, wherein the door blocking block is positioned on the inner wall of the L-shaped communicating pipe between the door body and the brush plate.
Preferably, the linkage assembly comprises a linkage push-pull rod which is vertically and rotatably arranged on one side of the brush plate facing the door body, and the other end of the linkage push-pull rod is vertically and rotatably arranged on one side of the door body facing the brush plate;
the linkage push-pull rod is a telescopic rod, the maximum length of the linkage push-pull rod is not smaller than the distance between the corresponding brush plate and the door body when the brush plate moves to the farthest end, and the minimum length of the linkage push-pull rod is larger than the distance between the corresponding brush plate and the door body when the brush plate moves to the nearest end.
Preferably, the motor is connected with the pump body through a correction mechanism, and the correction mechanism is sleeved on the outer side of the coupler;
the correction mechanism comprises a first fixed disk and a second fixed disk which are respectively connected with the motor output shaft and one end of the first transmission shaft, which is close to the motor output shaft, and a plurality of groups of correction units are uniformly arranged between the first fixed disk and the second fixed disk in a circumferential array.
Preferably, the correction unit comprises an inner lifting rod and an outer pressing rod which are sequentially arranged from inside to outside, the top end of the outer pressing rod is vertically and rotatably connected with the first fixed disk, the bottom end of the outer pressing rod stretches into the second fixed disk, the outer pressing rod stretching into the second fixed disk is vertically and rotatably connected with the eccentric wheel, the inner lifting rod is arranged above the eccentric wheel, and an arc-shaped contact plate is fixed at the position of the inner lifting rod corresponding to the eccentric wheel;
a pressure sensor is arranged on one side of the arc-shaped contact surface, which faces the eccentric wheel, and the pressure sensor is electrically connected with an alarm;
the outer pressure bar is a telescopic bar, the maximum length of the outer pressure bar is not less than the sum of the length of the long shaft of the eccentric wheel and the height of the inner lifting bar, and the shortest length of the outer pressure bar is equal to the sum of the length of the short shaft of the eccentric wheel and the height of the inner lifting bar.
Preferably, a unidirectional positioning unit is arranged in the second fixed disc and corresponds to the position of the eccentric wheel, the unidirectional positioning unit comprises a ratchet section arranged on the circumference side of the eccentric wheel, a pawl in compression joint with the ratchet section and a positioning torsion spring arranged at the rotation joint of the eccentric wheel and the second fixed disc, the unidirectional rotation direction of the ratchet section is the rotation direction when the eccentric wheel jacks up the inner lifting rod, and the unidirectional rotation direction of the ratchet section is opposite to the resetting direction of the positioning torsion spring;
the pawl is vertically and rotatably arranged on the compression sliding block, the compression sliding block is horizontally and slidably arranged on a guide plate fixed in the second fixed disk, a compression spring is further arranged between the guide plate and the compression sliding block, and the reset direction of the compression spring is the direction towards the ratchet section for compressing the pawl;
the outer circumference side of the eccentric wheel is composed of a ratchet section and a smooth section, and the smooth section is arranged corresponding to the arc-shaped contact plate.
Preferably, the first fixed disc and the second fixed disc are respectively integrally formed with the motor output shaft and the first transmission shaft;
the second transmission shaft is integrally formed with the first transmission shaft.
The application has the following beneficial effects:
1. through setting up impurity filtering and collecting mechanism, can be when not influencing axial-flow pump operation, collect the impurity on the filter screen, guaranteed axial-flow pump long-term, stable, low noise operation.
2. Through setting up correction mechanism, avoided the noise that the transmission shaft skew caused because of the shaft coupling wearing and tearing leads to, further guaranteed the stable, low noise operation of axial-flow pump.
3. Through setting up pressure sensor, can carry out the temporary drive with the help of correction mechanism when the shaft coupling produces wearing and tearing to send alarm signal to the alarm, remind the staff to maintain.
The technical scheme of the application is further described in detail through the drawings and the embodiments.
Drawings
FIG. 1 is a cross-sectional view of a low noise axial flow pump of the present application;
fig. 2 is an enlarged view at a in fig. 1;
FIG. 3 is an assembly view of a reciprocating assembly of a low noise axial flow pump of the present application;
fig. 4 is a schematic diagram of a correction mechanism for a low noise axial flow pump according to the present application.
Wherein: 1. a motor;
2. a correction mechanism; 21. a first fixed plate; 22. an outer pressure lever; 23. an inner lifting rod; 24. an eccentric wheel; 25. a pawl; 26. a guide plate; 27. a compression spring; 28. a second fixed disk;
3. a coupling;
4. a pump body; 41. a first drive shaft; 42. a housing; 43. an impeller;
5. impurity filtering and collecting mechanism; 51. a transmission assembly; 511. a second drive shaft; 512. a transmission gear; 52. a reciprocating assembly; 521. a drive toothed plate; 522. a transmission bar-shaped hole; 523. a drive rack; 53. a dirt collection assembly; 531. an L-shaped communicating tube; 532. a dirt collection bag; 533. one-way switch door; 534. a shutter block; 54. a filter screen; 55. brushing a plate; 56. and a linkage push-pull rod.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application more apparent, the embodiments of the present application will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the detailed description and specific examples, while indicating the embodiment of the application, are intended for purposes of illustration only and are not intended to limit the scope of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application. Examples of the embodiments are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements throughout or elements having like or similar functionality.
It should be noted that the terms "comprises" and "comprising," along with any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or server that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed or inherent to such process, method, article, or apparatus, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present application, it should be noted that, directions or positional relationships indicated by terms such as "upper", "lower", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or those that are conventionally put in use, are merely for convenience of describing the present application and simplifying the description, and do not indicate or imply that the apparatus or elements to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present application.
In the description of the present application, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.
As shown in fig. 1-4, a low-noise axial flow pump comprises a pump body 4 and a motor 1 connected with the pump body 4 through a coupler 3, wherein the pump body 4 comprises a shell 42, an impeller 43 arranged in the shell 42 and connected with the motor 1 through a first transmission shaft 41 and the coupler 3 in sequence, and a water inlet and a water outlet arranged on the shell 42, an impurity filtering and collecting mechanism 5 is arranged on the pump body 4 and close to the water inlet, the impurity filtering and collecting mechanism 5 comprises a filter screen 54 arranged at the water inlet, a transmission assembly 51 synchronously rotating with the impeller 43, a reciprocating assembly 52 horizontally reciprocating under the action of the transmission assembly 51, and a brush plate 55 with one side connected with the reciprocating assembly 52, and the other side of the brush plate 55 is attached to the surface of the filter screen 54; the pump body 4 is provided with a dirt collecting component 53 communicated with the water inlet at a position corresponding to the brush plate 55.
The transmission assembly 51 comprises a second transmission shaft 511 and a transmission gear 512, one end of the second transmission shaft 511 is fixedly connected with one end of the first transmission shaft 41 far away from the motor 1, and the other end of the second transmission shaft 511 passes through the filter screen 54 and is connected with the inner circumference side of the transmission gear 512; the outer circumference side of the transmission gear 512 is provided with a transmission gear section, and the arc length of the transmission gear section is smaller than 1/2 arc length of the transmission gear 512; the transmission teeth are arranged at the transmission teeth sections.
Preferably, the water inlet is connected with a square pipe through a square-change round pipe; a filter screen 54 and a transmission gear 512 are arranged in the square tube; the reciprocating assembly 52 comprises a transmission toothed plate 521 which is horizontally and slidably arranged in a square tube and sleeved outside the transmission gear 512, a transmission bar-shaped hole 522 is formed in the transmission toothed plate 521 and corresponds to the transmission gear 512, and transmission racks 523 matched with the transmission gear 512 are arranged on the upper side and the lower side of the transmission bar-shaped hole 522, so that the reciprocating horizontal movement is realized when the transmission toothed section of the transmission gear 512 is meshed with the transmission rack 523 on the upper side, the moving direction of the transmission toothed plate 521 is opposite to the moving direction of the transmission toothed plate 521 when the transmission toothed section of the transmission gear 512 is meshed with the transmission rack 523 on the lower side.
Preferably, the symmetrical two ends of the side of the transmission toothed plate 521 facing the filter screen 54 are provided with brush plates 55, and the side of the brush plates 55 contacting the filter screen 54 in the embodiment is also provided with bristles; the dirt collecting assembly 53 comprises an L-shaped communicating pipe 531 and a dirt collecting bag 532 which are arranged corresponding to the brush plates 55 at two ends, one end of the L-shaped communicating pipe 531 is communicated with the square pipe, and the other end of the L-shaped communicating pipe 531 is connected with the dirt collecting bag 532; one end of the L-shaped communicating pipe 531, which is close to the square pipe, is provided with a one-way switch door 533, and the one-way switch door 533 is arranged in linkage with the brush plate 55 through a linkage assembly; the cross section of the L-shaped communicating tube 531 is square.
Preferably, the unidirectional switch door 533 includes a door body with one end rotating on the inner wall of the L-shaped communication pipe 531, a shutter block 534 is disposed on the inner wall of the L-shaped communication pipe 531 and corresponding to the other end of the door body, and a compression torsion spring is disposed at the rotational connection position of the L-shaped communication pipe 531 and the door body for compressing the door body onto the shutter block 534, and the shutter block 534 is disposed on the inner wall of the L-shaped communication pipe 531 between the door body and the brush plate 55.
Preferably, the linkage assembly comprises a linkage push-pull rod 56 vertically and rotatably arranged on one side of the brush plate 55 facing the door body, the linkage push-pull rod 56 in the embodiment is rotatably arranged on one side of the door body close to the door stop 534, and the other end of the linkage push-pull rod 56 is vertically and rotatably arranged on one side of the door body facing the brush plate 55; the linkage push-pull rod 56 is a telescopic rod, and the maximum length of the linkage push-pull rod 56 is not less than the distance between the corresponding brush plate 55 and the door body when moving to the most distal end, and the minimum length of the linkage push-pull rod 56 is greater than the distance between the corresponding brush plate 55 and the door body when moving to the most proximal end.
Preferably, the motor 1 is connected with the pump body 4 through a correction mechanism 2, and the correction mechanism 2 is sleeved on the outer side of the coupler 3; the correction mechanism 2 comprises a first fixed disc 21 and a second fixed disc 28 which are respectively connected with the output shaft of the motor 1 and one end of a first transmission shaft 41 close to the output shaft of the motor 1, and a plurality of groups of correction units are uniformly arranged between the first fixed disc 21 and the second fixed disc 28 in a circumferential array. Preferably, the correction unit comprises an inner lifting rod 23 and an outer pressing rod 22 which are sequentially arranged from inside to outside, the top end of the outer pressing rod 22 is vertically and rotatably connected with the first fixed disk 21, the bottom end of the outer pressing rod 22 stretches into the second fixed disk 28, the outer pressing rod 22 stretching into the second fixed disk 28 is vertically and rotatably connected with the eccentric wheel 24, the inner lifting rod 23 is arranged above the eccentric wheel 24, and an arc-shaped contact plate is fixed at the position of the inner lifting rod 23 corresponding to the eccentric wheel 24; the side of the arc-shaped contact surface, which faces the eccentric wheel 24, is provided with a pressure sensor, the pressure sensor is electrically connected with an alarm, and the electronic component is a mature product in the market, and the pressure signal alarm principle acquired by the pressure sensor is common knowledge in the art, so that the description is omitted herein;
the outer compression bar 22 is a telescopic bar, and the maximum length of the outer compression bar 22 is not less than the sum of the length of the long axis of the eccentric wheel 24 and the height of the inner lifting bar 23, and the shortest length of the outer compression bar 22 is equal to the sum of the length of the short axis of the eccentric wheel 24 and the height of the inner lifting bar 23.
Preferably, a unidirectional positioning unit is arranged in the second fixed disk 28 and corresponds to the position of the eccentric wheel 24, the unidirectional positioning unit comprises a ratchet section arranged on the circumference side of the eccentric wheel 24, a pawl 25 in crimping engagement with the ratchet section and a positioning torsion spring arranged at the rotation joint of the eccentric wheel 24 and the second fixed disk 28, the unidirectional rotation direction of the ratchet section is the rotation direction when the eccentric wheel 24 jacks up the inner lifting rod 23, and the unidirectional rotation direction of the ratchet section is opposite to the reset direction of the positioning torsion spring; the pawl 25 is vertically and rotatably arranged on the pressing slide block, the pressing slide block is horizontally and slidably arranged on the guide plate 26 fixed in the second fixed disk 28, and a pressing spring 27 is further arranged between the guide plate 26 and the pressing slide block, and the resetting direction of the pressing spring 27 is the direction facing the ratchet section to press the pawl 25; the outer circumferential side of the eccentric wheel 24 is composed of a ratchet section and a smooth section, which is provided corresponding to the arc-shaped contact plate. The short axis of the eccentric 24 is vertical in the original state (when the coupling 3 is not worn), and a gap exists between the eccentric 24 and the arc-shaped contact plate in this state.
Preferably, the first fixed disk 21 and the second fixed disk 28 are respectively formed integrally with the output shaft of the motor 1 and the first transmission shaft 41; the second transmission shaft 511 is integrally formed with the first transmission shaft 41, increasing the overall strength.
Working principle: after the motor 1 is turned on, the output shaft of the motor 1 rotates, and then the impeller 43 is driven to rotate under the action of the coupler 3 and the first transmission shaft 41, meanwhile, the transmission gear 512 is driven to rotate through the second transmission shaft 511, and when the transmission tooth section on the transmission gear 512 is meshed with the transmission rack 523 on the upper side or the lower side of the transmission toothed plate 521, the transmission toothed plate 521 can be driven to horizontally move. In this embodiment, taking the engagement of the transmission tooth section on the moving gear with the transmission rack 523 on the upper side of the transmission tooth plate 521 as an example, at this time, the transmission tooth plate 521 moves leftwards, in the process of moving the transmission tooth plate 521 leftwards, the left linkage push-pull rod 56 contracts (the right linkage push-pull rod 56 stretches out) until the left linkage push-pull rod 56 contracts to the shortest length, the door body is pushed open under the action of the linkage push-pull rod 56, the transmission tooth plate 521 continues to move to drive the brush plate 55 to sweep impurities on the left half of the filter screen 54 into the left L-shaped communicating pipe 531, then the left dirt collecting bag 532 is carried out along the left L-shaped communicating pipe 531, at this time, the transmission tooth plate 521 moves to the leftmost end (at this time, the left brush plate 55 moves to the farthest end, the right linkage push-pull rod 56 stretches out completely), and likewise, the transmission tooth plate 512 continues to transmit, the transmission tooth section of the transmission tooth plate 512 meshes with the lower transmission tooth plate 56, and the impurities on the right half of the filter screen 54 into the right dirt collecting bag 523.
During the operation, if the coupling 3 is worn, the coupling 3 is unbalanced, that is, the first fixed disc 21 is inclined towards a certain direction, the outer compression rod 22 of the correction unit located downward in the direction presses the eccentric wheel 24 (and the outer compression rod 22 of the correction unit located at the central symmetry position thereof is pulled upward at the same time, so that the outer compression rod 22 stretches out), the eccentric wheel 24 rotates, the inner lifting rod 23 is lifted up, and the inner lifting rod 23 lifts up the first fixed disc, so that the first fixed disc is kept horizontal again.
Therefore, the low-noise axial flow pump with the structure can collect impurities on the filter screen while the operation of the axial flow pump is not influenced, and the long-term, stable and low-noise operation of the axial flow pump is ensured.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application and not for limiting it, and although the present application has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that: the technical scheme of the application can be modified or replaced by the same, and the modified technical scheme cannot deviate from the spirit and scope of the technical scheme of the application.
Claims (10)
1. The utility model provides a low noise axial-flow pump, includes the pump body and through shaft coupling and pump body coupling's motor, the pump body includes the casing, sets up in the inside impeller and the water inlet and the delivery port of setting on the casing of just being connected with the motor through first transmission shaft and shaft coupling in proper order, its characterized in that: the impurity filtering and collecting mechanism is arranged on the pump body and close to the water inlet and comprises a filter screen arranged at the water inlet, a transmission assembly which rotates synchronously with the impeller, a reciprocating assembly which horizontally reciprocates under the action of the transmission assembly, and a brush plate, one side of which is connected with the reciprocating assembly, and the other side of which is attached to the surface of the filter screen;
the position on the pump body corresponding to the brush plate is provided with a dirt collecting assembly communicated with the water inlet.
2. A low noise axial flow pump according to claim 1, wherein: the transmission assembly comprises a second transmission shaft and a transmission gear, one end of the second transmission shaft is fixedly connected with one end of the first transmission shaft far away from the motor, and the other end of the second transmission shaft penetrates through the filter screen and then is connected with the inner circumference side of the transmission gear;
the outer circumferential side of the transmission gear is provided with a transmission gear section, and the arc length of the transmission gear section is smaller than 1/2 arc length of the transmission gear;
the transmission teeth are arranged at the transmission teeth sections.
3. A low noise axial flow pump according to claim 2, wherein: the water inlet is connected with a square tube through a square tube; a filter screen and a transmission gear are arranged in the square tube;
the reciprocating movement assembly comprises a transmission toothed plate which is horizontally arranged in the square tube in a sliding manner and sleeved outside the transmission gear, a transmission strip-shaped hole is formed in the transmission toothed plate and corresponds to the position of the transmission gear, and transmission racks matched with the transmission gear are arranged on the upper side and the lower side of the transmission strip-shaped hole.
4. A low noise axial flow pump according to claim 3, wherein: brush plates are arranged at the symmetrical two ends of one side of the transmission toothed plate facing the filter screen;
the sewage collecting assembly comprises an L-shaped communicating pipe and a sewage collecting bag, wherein the L-shaped communicating pipe and the sewage collecting bag are arranged corresponding to the brush plates at the two ends, one end of the L-shaped communicating pipe is communicated with the square pipe, and the other end of the L-shaped communicating pipe is connected with the sewage collecting bag;
one end of the L-shaped communicating pipe, which is close to the square pipe, is provided with a one-way switch door which is in linkage arrangement with the brush plate through a linkage assembly;
the cross section of the L-shaped communicating pipe is square.
5. A low noise axial flow pump according to claim 4, wherein: the unidirectional switch door comprises a door body with one end rotatably arranged on the inner wall of the L-shaped communicating pipe, a door blocking block is arranged on the inner wall of the L-shaped communicating pipe and corresponds to the other end of the door body, a compression torsion spring is arranged at the rotary joint of the L-shaped communicating pipe and the door body and used for compressing the door body on the door blocking block, and the door blocking block is positioned on the inner wall of the L-shaped communicating pipe between the door body and the brush plate.
6. A low noise axial flow pump according to claim 5, wherein: the linkage assembly comprises a linkage push-pull rod which is vertically and rotatably arranged on one side of the brush plate facing the door body, and the other end of the linkage push-pull rod is vertically and rotatably arranged on one side of the door body facing the brush plate;
the linkage push-pull rod is a telescopic rod, the maximum length of the linkage push-pull rod is not smaller than the distance between the corresponding brush plate and the door body when the brush plate moves to the farthest end, and the minimum length of the linkage push-pull rod is larger than the distance between the corresponding brush plate and the door body when the brush plate moves to the nearest end.
7. A low noise axial flow pump according to claim 6, wherein: the motor is connected with the pump body through a correction mechanism, and the correction mechanism is sleeved on the outer side of the coupler;
the correction mechanism comprises a first fixed disk and a second fixed disk which are respectively connected with the motor output shaft and one end of the first transmission shaft, which is close to the motor output shaft, and a plurality of groups of correction units are uniformly arranged between the first fixed disk and the second fixed disk in a circumferential array.
8. A low noise axial flow pump according to claim 7, wherein: the correction unit comprises an inner lifting rod and an outer pressing rod which are sequentially arranged from inside to outside, the top end of the outer pressing rod is vertically and rotatably connected with the first fixed disk, the bottom end of the outer pressing rod stretches into the second fixed disk, the outer pressing rod stretching into the second fixed disk is vertically and rotatably connected with the eccentric wheel, the inner lifting rod is arranged above the eccentric wheel, and an arc-shaped contact plate is fixed at the position of the inner lifting rod corresponding to the eccentric wheel;
a pressure sensor is arranged on one side of the arc-shaped contact surface, which faces the eccentric wheel, and the pressure sensor is electrically connected with an alarm;
the outer pressure bar is a telescopic bar, the maximum length of the outer pressure bar is not less than the sum of the length of the long shaft of the eccentric wheel and the height of the inner lifting bar, and the shortest length of the outer pressure bar is equal to the sum of the length of the short shaft of the eccentric wheel and the height of the inner lifting bar.
9. A low noise axial flow pump according to claim 8, wherein: the unidirectional positioning unit comprises a ratchet section arranged on the circumference side of the eccentric wheel, a pawl in compression joint with the ratchet section and a positioning torsion spring arranged at the rotation joint of the eccentric wheel and the second fixed disk, wherein the unidirectional rotation direction of the ratchet section is the rotation direction when the eccentric wheel jacks up the inner lifting rod, and the unidirectional rotation direction of the ratchet section is opposite to the resetting direction of the positioning torsion spring;
the pawl is vertically and rotatably arranged on the compression sliding block, the compression sliding block is horizontally and slidably arranged on a guide plate fixed in the second fixed disk, a compression spring is further arranged between the guide plate and the compression sliding block, and the reset direction of the compression spring is the direction towards the ratchet section for compressing the pawl;
the outer circumference side of the eccentric wheel is composed of a ratchet section and a smooth section, and the smooth section is arranged corresponding to the arc-shaped contact plate.
10. A low noise axial flow pump according to claim 9, wherein: the first fixed disc and the second fixed disc are respectively integrally formed with the motor output shaft and the first transmission shaft;
the second transmission shaft is integrally formed with the first transmission shaft.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311072970.8A CN117072451B (en) | 2023-08-24 | 2023-08-24 | Low-noise axial flow pump |
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|---|---|---|---|
| CN202311072970.8A CN117072451B (en) | 2023-08-24 | 2023-08-24 | Low-noise axial flow pump |
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| CN117072451A true CN117072451A (en) | 2023-11-17 |
| CN117072451B CN117072451B (en) | 2024-02-09 |
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|---|---|
| CN117072451B (en) | 2024-02-09 |
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