CN117108523A - Axial flow pump lift measuring device and measuring method - Google Patents
Axial flow pump lift measuring device and measuring method Download PDFInfo
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- CN117108523A CN117108523A CN202311380892.8A CN202311380892A CN117108523A CN 117108523 A CN117108523 A CN 117108523A CN 202311380892 A CN202311380892 A CN 202311380892A CN 117108523 A CN117108523 A CN 117108523A
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- 238000000034 method Methods 0.000 title claims abstract description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 98
- 230000007246 mechanism Effects 0.000 claims abstract description 44
- 238000005259 measurement Methods 0.000 claims abstract description 24
- 230000005540 biological transmission Effects 0.000 claims abstract description 7
- 238000007789 sealing Methods 0.000 claims description 31
- 238000007667 floating Methods 0.000 claims description 23
- 230000008569 process Effects 0.000 claims description 15
- 230000009471 action Effects 0.000 claims description 10
- 230000000903 blocking effect Effects 0.000 claims description 7
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 230000000630 rising effect Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 5
- 239000002699 waste material Substances 0.000 description 5
- 238000013461 design Methods 0.000 description 3
- 210000001503 joint Anatomy 0.000 description 3
- 238000000691 measurement method Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 238000012360 testing method 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
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
- F04D15/0088—Testing machines
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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 application discloses an axial flow pump lift measuring device and a measuring method, which belong to the technical field of pump lift measurement, and comprise a pump body, wherein one end of the pump body is provided with a water inlet pipe, an impeller is arranged in the water inlet pipe, a rotating shaft is arranged at the center axis of the impeller, a driving mechanism is also arranged on the pump body, the driving mechanism comprises a motor arranged outside the pump body, the output end of the motor is in transmission connection with the rotating shaft and is used for driving the rotating shaft to rotate, the other end of the pump body is provided with a water outlet pipe, the water outlet pipe is communicated with a lift measuring pipe through a connecting mechanism, the water outlet pipe is inserted in the lift measuring pipe, and a measuring component is arranged on the lift measuring pipe; the water lift information is obtained by measuring the pressure change of the water so as to ensure the normal operation of the water pump system and provide accurate data.
Description
Technical Field
The application relates to the technical field of pump lift measurement, in particular to an axial flow pump lift measurement device and an axial flow pump lift measurement method.
Background
The pump lift of an axial flow pump refers to the energy obtained by unit component fluid after the fluid passes through the pump, and the determination of the pump lift is an important problem in the planning and design of the axial flow pump station. The method directly relates to rationality and installed capacity of the submersible axial flow pump selection, thereby influencing engineering investment, operation and management cost and meeting drought-resistant and waterlogging-draining requirements. Due to improper design of the pump head of the axial-flow pump station, the model of the submersible axial-flow pump is unreasonable, and engineering investment is increased. And the water pump can run for a long time with low efficiency and high energy consumption, so that energy waste is caused. Meanwhile, cavitation and vibration are easy to occur, so that the service life of the axial-flow submersible pump unit is shortened.
In pumping stations of water treatment plants, it is often necessary to measure the pump head to ensure proper flow and treatment of water. Conventional lift measurement methods may require the use of long measurement pipes and may affect measurement accuracy due to the possible presence of gas within the pipes.
When measuring the head of an axial flow pump, it is very important to ensure tightness between the axial flow pump and the head tube, as any leakage or failure to prevent water flow from entering or leaving the measuring device can affect the accuracy and reliability of the head measurement.
After the lift pipe is pulled out from the water outlet pipe in the prior art, when the secondary test is carried out, as no valve is arranged on the lift pipe to prevent water from flowing downwards, the water in the lift pipe can be emptied, so that a large amount of water is required to be supplemented when the lift pipe is measured next time, and water resource waste is easy to cause.
Disclosure of Invention
The application aims to provide an axial flow pump lift measuring device and an axial flow pump lift measuring method.
In order to achieve the technical purpose, the scheme of the application is as follows:
the utility model provides an axial-flow pump lift measuring device, includes the pump body, the one end of the pump body is provided with the inlet tube, install the impeller in the inlet tube, the pivot is installed to the axis of impeller, still install actuating mechanism on the pump body, actuating mechanism is including installing the outside motor of the pump body, the output of motor is connected with the transmission between the pivot for the rotation of drive pivot, the other end of the pump body is provided with the outlet pipe, be provided with the lift pipe through coupling mechanism intercommunication on the outlet pipe, the outlet pipe is pegged graft in the lift pipe that surveys, install measuring assembly on the lift pipe;
the measuring assembly comprises a flange plate arranged at the upper end of the lift measuring pipe, a sealing cover is connected to the flange plate, a pressure bearing disc is slidably arranged in the sealing cover, a resistance spring is connected to the inner side of the pressure bearing disc, the other end of the resistance spring abuts against the inner end of the sealing cover, an exhaust hole is formed in the sealing cover, a guide rod for plugging the exhaust hole is slidably inserted in the exhaust hole, a jack corresponding to the exhaust hole is formed in the pressure bearing disc, the inner end of the guide rod penetrates through the jack, a floating plate is connected to the other end of the guide rod through a plugging assembly, and the plugging assembly is used for plugging the jack.
Preferably, the bearing disc is provided with an embedding groove for embedding the floating plate, one side of the bearing disc, which is positioned on the embedding groove, is also provided with a conical groove, the conical groove is provided with a waterproof convex ring, and the waterproof convex ring is embedded with a waterproof rubber ring;
the blocking assembly comprises a plug which is arranged on the outer side of the guide rod in a conical shape, and a circle of annular grooves matched with the waterproof convex rings are arranged on the outer side of the plug.
Preferably, the inner wall of the sealing cover is provided with a bump for limiting the resistance spring, the resistance spring is sleeved outside the bump, the exhaust hole penetrates through the bump, and a tangent plane groove is formed in one end of the bump, which is positioned at the exhaust hole;
the guide rod is arranged in two sections and comprises a first section and a second section which are connected with each other, the diameter of the first section is smaller than that of the second section, and a circle of sealing ring matched with the tangent plane groove is arranged on the outer side of the second section;
the guide rod is provided with scale values on the first section.
Preferably, the connecting mechanism comprises a fixed seat arranged on the outer side of the lift measuring pipe, two rotating shafts are further rotatably arranged on the lift measuring pipe, semicircular valve plates are arranged on the two rotating shafts, the upper ends of the two rotating shafts penetrate through the fixed seat, and gears are coaxially arranged on the two rotating shafts;
the middle part of the fixing seat is provided with a through hole, a traction rod is inserted in the through hole in a sliding way, teeth are arranged on two sides of the traction rod, and the teeth are in meshed connection with gears on two sides;
the locating device is characterized in that a locating hole is further formed in one end of the traction rod, a locating seat is arranged at one end, away from the locating hole, of the fixing seat, the locating seat is U-shaped, a reset spring is arranged on the inner side of the locating seat, and the other end of the reset spring abuts against the other end of the traction rod.
Preferably, a socket is arranged on the outer side of the water outlet pipe, a guide hole matched with the traction rod is formed in the side face of the socket, a positioning pin is inserted above the socket in a sliding mode, and the positioning pin and the positioning hole are matched and clamped.
Preferably, a fastening mechanism is arranged above the fixed seat;
the fastening mechanism comprises a ratchet wheel coaxially arranged on one rotating shaft, a pawl is rotatably arranged on one side of the ratchet wheel, and a hexagonal limiting block is arranged at the top end of the rotating shaft on the ratchet wheel.
Preferably, a sealing mechanism is arranged at one end of the water outlet pipe and one end of the lift measuring pipe, which are mutually inserted;
the sealing mechanism comprises an annular raised line arranged on the inner wall of the lift pipe, a tangent plane is formed on one side of the annular raised line, a circle of annular groove is formed on the tangent plane, an annular block is embedded in the annular groove in a sliding mode, an arc-shaped channel for guiding air is further formed in the annular raised line, a plurality of sliding grooves are formed in the opposite side of the annular groove, a plurality of pistons are connected in the sliding mode in the sliding grooves, two ends of the arc-shaped channel are respectively arranged on one side of the annular groove and one side of the sliding grooves, an ejector rod is connected to one side of the piston, and a compression ring is connected to the other end of the ejector rod;
the end part of the water outlet pipe is provided with an inclined pressing block matched with the tangential plane of the annular convex strip, and the inclined pressing block is provided with a circle of pressing blocks matched with the annular blocks.
Preferably, the side surface of the valve plate is attached to the pressing ring.
Preferably, the outer side of the water outlet pipe is fixedly connected with a sliding rod, the outer side of the lift measuring pipe is fixedly connected with a guide seat, and the guide seat is in sliding connection with the sliding rod.
The measuring method of the axial flow pump lift measuring device comprises the following steps:
step one: the motor is started, the output end of the motor is in transmission connection with the rotating shaft, the impeller starts to rotate through the driving mechanism, water flow is driven to be sucked from the water inlet pipe by rotation of the impeller, pressure is generated under the action of the impeller, and the water flow is pushed to the other end of the pump body through pressurization of the impeller and is discharged through the water outlet pipe;
step two: in the process of rising of the water surface, air is extruded to the upper end of the lift measuring pipe, at the moment, the floating plate is not contacted with the water surface, a gap exists between the floating plate and the pressure-bearing disc, the first section of the guide rod is positioned in the exhaust hole, gas can be discharged through the gap and the exhaust hole because the diameter of the first section is smaller than the inner diameter of the exhaust hole, after the water surface is contacted with the floating plate, the floating plate gradually moves upwards, the guide rod is driven to move upwards in the moving process, the guide rod gradually transits from the first section to the second section in the moving process, the guide rod is inserted into the exhaust hole, the floating plate is completely embedded in the caulking groove, at the moment, the second section is inserted into the exhaust hole to block the exhaust hole, the gas is extruded and emptied at the same time, and the accuracy of measured data is ensured, and the guide rod on the floating plate moves up and down;
the motion of the guide rod is converted into measurement data, the scale value on the guide rod can be used for directly reading the measurement result, and the current lift height can be determined according to the position of the guide rod.
The beneficial effects of the application are as follows:
1. the impeller in the pump body is driven to rotate by the motor, so that water is sucked from the water inlet pipe and discharged through the water outlet pipe. The water outlet pipe is connected with the lift measuring pipe, and the measuring component in the lift measuring pipe can help to remove gas and measure the lift at the same time, so that the measuring accuracy is ensured. When water flows through the lift tube, the pressure of the water acts on the measuring assembly, and the pressure-bearing disc therein moves up and down under the influence of the pressure. And finally, the measurement data are converted into measurement data through a guide rod. Longer measuring lines are no longer necessary.
2. In the scheme, through rotating the hexagonal limiting block on one rotating shaft, the gear on the rotating shaft is meshed with the teeth on the traction rod, so that the traction rod is driven to move, the water outlet pipe and the lift measuring pipe are mutually close to each other due to the acting force of the traction rod, meanwhile, the two rotating shafts rotate, the valve plate can be opened, the water outlet pipe and the lift measuring pipe are communicated, the fastening mechanism is additionally arranged, the ratchet wheel and the pawl can effectively prevent the rotation of the rotating shaft (the specific working process is not described in detail any more), when one end of the traction rod is propped against the positioning seat, the valve plate is in the maximum opening state, and due to the action of the traction rod, the water outlet pipe and the lift measuring pipe are tightly connected together, so that the sealing effect is achieved, when the measurement is needed, the operation of the motor is stopped, the pawl is loosened, the rotating shaft, the water outlet pipe and the lift measuring pipe are separated, and meanwhile, the traction rod is reset due to the action of the reset spring, so that the valve plate is closed, and water in the lift measuring pipe can be effectively prevented from being emptied.
Drawings
FIG. 1 is a schematic perspective view of the present application;
FIG. 2 is a schematic diagram of a second perspective structure of the present application;
FIG. 3 is a schematic view of a partial cross-sectional structure of the present application;
FIG. 4 is a schematic cross-sectional view of a measurement assembly of the present application;
FIG. 5 is an enlarged schematic view of the structure of FIG. 4A according to the present application;
FIG. 6 is a schematic view of a fastening mechanism according to the present application;
FIG. 7 is a schematic view of the internal structure of the lift tube according to the present application;
FIG. 8 is a schematic view of a connecting mechanism according to the present application;
FIG. 9 is an enlarged schematic view of the structure of FIG. 8B according to the present application;
FIG. 10 is a schematic cross-sectional view of the coupling mechanism of the present application;
FIG. 11 is a schematic view of the internal structure of the connecting mechanism of the present application;
FIG. 12 is a schematic view of a part of the structure of the connecting mechanism of the present application;
fig. 13 is an enlarged view of fig. 12C according to the present application.
In the figure: 1. a pump body; 2. a water inlet pipe; 3. a driving mechanism; 301. a motor; 4. a water outlet pipe; 401. a socket; 402. a guide hole; 403. a positioning pin; 404. a diagonal briquetting; 405. a compaction block; 406. a slide bar; 5. a connecting mechanism; 501. a fixing seat; 502. a valve plate; 503. a gear; 504. a through hole; 505. a traction rod; 506. teeth; 507. positioning holes; 508. a positioning seat; 509. a return spring; 6. measuring a lift pipe; 601. a guide seat; 7. a measurement assembly; 701. a flange plate; 702. a cover; 7021. a bump; 7022. a tangent plane groove; 703. a pressure-bearing disc; 7031. a caulking groove; 7032. a conical groove; 7033. waterproof convex ring; 704. a resistance spring; 705. an exhaust hole; 706. a guide rod; 7061. a first section; 7062. a second section; 7063. sealing rings; 707. a jack; 708. a plug assembly; 7081. a plug; 7082. an annular groove; 709. a floating plate; 8. an impeller; 801. a rotating shaft; 9. a fastening mechanism; 901. a ratchet wheel; 902. a pawl; 10. a sealing mechanism; 1001. annular raised strips; 1002. cutting into sections; 1003. a ring groove; 1004. a ring block; 1005. an arcuate channel; 1006. a chute; 1007. a piston; 1008. a push rod; 1009. and a compression ring.
Detailed Description
The application will be described in further detail with reference to the drawings and the specific examples. For a clear and complete description of the technical solutions, the following examples are chosen for illustration; based on the description of the present application, other embodiments obtained without making any inventive effort are within the scope of the present application.
In the following embodiments, it should be noted that, in terms of "upper", "lower", "left", "right", "inner", "outer", "top/bottom", and the like, the orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is merely for the sake of clarity in describing the present embodiment, and it does not indicate or imply that the apparatus or element to be referred to must have a specific orientation, and therefore, should not be construed as limiting the present application.
Example 1
Referring to fig. 1-6, in the pumping station of a water treatment plant, it is often necessary to measure the pump head to ensure proper flow and treatment of water. Conventional lift measurement methods may require the use of long measurement pipes and may affect measurement accuracy due to the possible presence of gas within the pipes.
The application discloses an axial flow pump lift measuring device, which comprises a pump body 1, wherein one end of the pump body 1 is provided with a water inlet pipe 2, an impeller 8 is arranged in the water inlet pipe 2, a rotating shaft 801 is arranged at the central axis of the impeller 8, a driving mechanism 3 is also arranged on the pump body 1, the driving mechanism 3 comprises a motor 301 arranged outside the pump body 1, the output end of the motor 301 is in transmission connection with the rotating shaft 801 and is used for driving the rotating shaft 801 to rotate, the other end of the pump body 1 is provided with a water outlet pipe 4, the water outlet pipe 4 is communicated with a lift measuring pipe 6 through a connecting mechanism 5, the water outlet pipe 4 is inserted in the lift measuring pipe 6, and a measuring component 7 is arranged on the lift measuring pipe 6;
the measuring assembly 7 comprises a flange plate 701 arranged at the upper end of the lift pipe 6, a sealing cover 702 is connected to the flange plate 701, a pressure bearing plate 703 is slidably arranged in the sealing cover 702, a resistance spring 704 is connected to the inner side of the pressure bearing plate 703, the other end of the resistance spring 704 abuts against the inner end of the sealing cover 702, an exhaust hole 705 is formed in the sealing cover 702, a guide rod 706 for blocking the exhaust hole 705 is slidably inserted in the exhaust hole 705, a jack 707 corresponding to the exhaust hole 705 is formed in the pressure bearing plate 703, the inner end of the guide rod 706 penetrates through the jack 707, the other end of the guide rod 706 is connected with a floating plate 709 through a blocking assembly 708, and the blocking assembly 708 is used for blocking the jack 707.
The pressure-bearing disc 703 is provided with an embedding groove 7031 for embedding the floating plate 709, one side of the pressure-bearing disc 703, which is positioned on the embedding groove 7031, is also provided with a conical groove 7032, the conical groove 7032 is provided with a waterproof convex ring 7033, and the waterproof convex ring 7033 is embedded with a waterproof rubber ring;
the blocking assembly 708 includes a plug 7081 disposed on the outside of the stem 706 in a tapered configuration, with a ring of annular grooves 7082 on the outside of the plug 7081 that mate with the waterproof collar 7033.
The inner wall of the cover 702 is provided with a bump 7021 for limiting the resistance spring 704, the resistance spring 704 is sleeved on the outer side of the bump 7021, the exhaust hole 705 penetrates through the bump 7021, and a tangential slot 7022 is formed in one end of the bump 7021, which is positioned at the exhaust hole 705;
the guide rod 706 is arranged in two sections and comprises a first section 7061 and a second section 7062 which are connected with each other, the diameter of the first section 7061 is smaller than that of the second section 7062, and a circle of sealing rings 7063 matched with the tangential grooves 7022 are arranged on the outer side of the second section 7062;
the guide bar 706 is provided with graduation values on the first segment 7061.
When in operation, when the lift measurement is needed, the motor 301 is started, the output end of the motor is in transmission connection with the rotating shaft 801, and the impeller 8 starts to rotate through the driving mechanism 3. The rotation of the impeller 8 drives water flow to be sucked from the water inlet pipe 2, and the water flow generates pressure under the action of the impeller 8. The water flow is pushed to the other end of the pump body 1 by the pressurization of the impeller 8 and is discharged through the water outlet pipe 4. The water outlet pipe 4 is communicated with the lift measuring pipe 6 through a connecting mechanism 5. The connecting mechanism 5 plays a role of sealing, and ensures that the outlet water flows to the lift measuring pipe 6. After the water enters the measuring assembly 7, the pressure of the water will affect the bearing disk 703 inside the measuring assembly 7. The lift is measured by moving the bearing platen 703 up and down.
Specifically, if air exists in the lift tube 6, air is extruded to the upper end of the lift tube 6 during the rising process of the water surface, at this time, the floating plate 709 is not in contact with the water surface, a gap exists between the floating plate 709 and the pressure-bearing disc 703, and the first section 7061 of the guide rod 706 is positioned in the exhaust hole 705, because the diameter of the first section 7061 is smaller than the inner diameter of the exhaust hole 705, the air can be discharged through the gap and the exhaust hole 705, after the water surface is in contact with the floating plate 709, the floating plate 709 gradually moves upwards, the guide rod 706 is driven to move upwards during the moving process, the guide rod 706 is gradually inserted into the exhaust hole 7062 from the first section 7061 during the moving process, after the floating plate 709 is completely embedded in the embedded groove 7031, at this time, the second section 7062 is inserted into the exhaust hole 705, the exhaust hole 705 is blocked, and the air is extruded and exhausted. The design of the vent holes 705 and the guide rods 706 can help to remove gas, ensure the accuracy of measurement data, and ensure that the guide rods 706 on the floating plate 709 move up and down;
the motion of the guide bar 706 is converted into measurement data and the scale values on the guide bar 706 can be used to directly read the measurement. From the position of the guide rod 706, the current head height may be determined.
When it is necessary to end the measurement or stop the operation of the pump, the operation of the motor 301 may be stopped, thereby ending the operation of the measuring device.
Example two
Referring to fig. 7-9, the present embodiment is an improvement on the basis of the embodiment, and it is very important to ensure the tightness between the axial flow pump and the head pipe 6 when measuring the head of the axial flow pump, because any leakage or failure to prevent the water flow from entering or leaving the measuring device affects the accuracy and reliability of the head measurement.
In addition, after the lift measuring tube 6 in the prior art is pulled out from the water outlet pipe 4, the water in the lift measuring tube 6 can be emptied because no valve is arranged on the lift measuring tube 6 to prevent the water from flowing downwards, so that a large amount of water is needed to be supplemented when the lift is measured next time, and water resource waste is easily caused.
In order to ensure tightness and reduce water waste, the connecting mechanism 5 comprises a fixed seat 501 arranged on the outer side of a lift measuring pipe 6, wherein the lift measuring pipe 6 is also rotatably provided with two rotating shafts 801, semicircular valve plates 502 are arranged on the two rotating shafts 801, the upper ends of the two rotating shafts 801 penetrate through the fixed seat 501, and gears 503 are coaxially arranged on the two rotating shafts 801;
the middle part of the fixing seat 501 is provided with a through hole 504, a traction rod 505 is inserted in the through hole 504 in a sliding way, teeth 506 are arranged on two sides of the traction rod 505, and the teeth 506 are connected with gears 503 on two sides in a meshed manner;
the locating hole 507 has still been seted up to the one end of drawbar 505, and the one end that fixing base 501 kept away from locating hole 507 is provided with positioning seat 508, and positioning seat 508 is the U type setting, and the reset spring 509 is installed to the inboard of positioning seat 508, and the other end of reset spring 509 supports the other end at drawbar 505.
The outside of outlet pipe 4 is provided with socket 401, and the guide hole 402 that matches with drawbar 505 has been seted up to the side of socket 401, and the top slip grafting of socket 401 has locating pin 403, matches the joint each other between locating pin 403 and the locating hole 507.
A fastening mechanism 9 is arranged above the fixed seat 501;
the fastening mechanism 9 comprises a ratchet 901 coaxially arranged on one of the rotating shafts 801, a pawl 902 is rotatably arranged on one side of the ratchet 901, and a hexagonal limiting block is arranged at the top end of the rotating shaft 801 positioned on the ratchet 901.
The outside fixedly connected with slide bar 406 of outlet pipe 4, the outside fixedly connected with guide holder 601 of measuring lift pipe 6, sliding grafting between guide holder 601 and the slide bar 406.
When in use, before the water outlet pipe 4 is inserted into the lift pipe 6, the two groups of semicircular valve plates 502 are in a closed state, so that the water in the lift pipe 6 can be effectively prevented from being emptied;
when the water outlet pipe 4 is inserted into the lift measuring pipe 6, all parts of the connecting mechanism 5 start to function.
First, one end of the traction rod 505 is inserted into the guide hole 402 of the socket 401, the slide bar 406 is inserted on the guide seat 601, and the positioning hole 507 of the traction rod 505 is matched and clamped with the positioning pin 403 of the socket 401, so as to realize positioning.
Through rotating the hexagonal stopper on one of the rotating shafts 801, the gear 503 on the rotating shaft 801 is meshed with the teeth 506 on the traction rod 505, so as to drive the traction rod 505 to move, and due to the acting force of the traction rod 505, the water outlet pipe 4 and the lift pipe 6 are close to each other and are in butt joint, meanwhile, the rotation of the two rotating shafts 801 can also open the valve plate 502, so that the water outlet pipe 4 and the lift pipe 6 are communicated, the fastening mechanism 9 is additionally arranged, the ratchet 901 and the pawl 902 can effectively prevent the rotating shaft 801 from rotating (the specific working process is not described in detail), when one end of the traction rod 505 is propped against the positioning seat 508, the valve plate 502 is in the maximum opening state, and due to the action of the traction rod 505, the water outlet pipe 4 and the lift pipe 6 are tightly connected together, so that the sealing effect is achieved.
When the measurement is required to be finished, the operation of the motor 301 is stopped, the pawl 902 is loosened, the rotating shaft 801, the water outlet pipe 4 and the lift measuring pipe 6 are separated, and meanwhile, the traction rod 505 is reset under the action of the reset spring 509, so that the valve plate 502 is closed, water in the lift measuring pipe 6 can be effectively prevented from being emptied, and the waste of water resources is reduced.
Example III
Referring to fig. 10-13, in this embodiment, a sealing mechanism 10 is disposed at one end of the water outlet pipe 4 and the lift pipe 6, which are inserted with each other, in order to further achieve a sealing effect after the water outlet pipe 4 and the lift pipe 6 are connected;
the sealing mechanism 10 comprises an annular raised line 1001 arranged on the inner wall of the lift pipe 6, a tangent plane 1002 is arranged on one side of the annular raised line 1001, a circle of annular groove 1003 is arranged on the tangent plane 1002, an annular block 1004 is embedded in the annular groove 1003 in a sliding manner, an arc-shaped channel 1005 for guiding air is also arranged on the annular raised line 1001, a plurality of sliding grooves 1006 are arranged on the opposite side of the annular groove 1003, a piston 1007 is connected in a sliding manner in the plurality of sliding grooves 1006, two ends of the arc-shaped channel 1005 are respectively arranged on one side of the annular groove 1003 and one side of the sliding grooves 1006, a push rod 1008 is connected on one side of the piston 1007, and the other end of the push rod 1008 is connected with a compression ring 1009;
the end of the water outlet pipe 4 is provided with an inclined pressing block 404 matched with the tangent plane 1002 of the annular convex strip 1001, and the inclined pressing block 404 is provided with a circle of pressing blocks 405 matched with the annular block 1004.
The side surface of the valve plate 502 is bonded to the pressing ring 1009.
Specifically, after the water outlet pipe 4 is in butt joint with the lift measuring pipe 6, the annular raised strips 1001 are in butt joint with the inclined pressing blocks 404, so that a first sealing effect is achieved.
The inclined pressing block 404 continues to squeeze to one side of the annular convex strip 1001, the squeezing ring block 1004 moves inwards, the ring block 1004 moves to squeeze air, so that the air enters one side of the sliding groove 1006 through the arc-shaped channel 1005, and thus the piston 1007 in the pneumatic pressing sliding groove 1006 moves to one side close to the inclined pressing block 404, and the ejector rod 1008 and the pressing ring 1009 on the piston 1007 can be driven to move to one side close to the inclined pressing block 404, and the pressing ring 1009 is annularly arranged;
when the pressing ring 1009 moves to the side close to the inclined pressing block 404, the joint surface of the pressing ring 1009 and the valve plate 502 can be opened, so that the pressing ring 1009 and the valve plate 502 are prevented from being bonded together due to long-time contact, and the valve plate 502 is not easy to open.
When the water outlet pipe 4 and the lift pipe 6 are separated, the inclined pressing block 404 does not give the extrusion force to the annular convex strip 1001 any more, the pressing block 405 is separated from the annular convex strip 1004, and because the thrust spring is installed on the inner side of the piston 1007, the thrust spring can drive the piston 1007 to reset, the piston 1007 presses air in the resetting process, so that the air enters the annular groove 1003 again through the arc-shaped channel 1005, the annular convex strip 1004 is reset, and at the same time, the piston 1007 can drive the push rod 1008 and the pressing ring 1009 to move to one side close to the valve plate 502, and because the water outlet pipe 4 and the lift pipe 6 are separated, the valve plate 502 is closed, the pressing ring 1009 is tightly attached to the valve plate 502, and the second sealing effect is achieved.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The foregoing is merely a preferred embodiment of the present application, and it should be noted that it will be apparent to those skilled in the art that several modifications and variations can be made without departing from the technical principle of the present application, and these modifications and variations should also be regarded as the scope of the application.
Claims (10)
1. The utility model provides an axial-flow pump lift measuring device, includes pump body (1), the one end of pump body (1) is provided with inlet tube (2), install impeller (8) in inlet tube (2), pivot (801) are installed to the axis of impeller (8), still install actuating mechanism (3) on pump body (1), actuating mechanism (3) are including installing at the outside motor (301) of pump body (1), the output of motor (301) is connected with the transmission between pivot (801) for the rotation of drive pivot (801), its characterized in that: the water pump is characterized in that a water outlet pipe (4) is arranged at the other end of the pump body (1), a lift measuring pipe (6) is communicated with the water outlet pipe (4) through a connecting mechanism (5), the water outlet pipe (4) is inserted into the lift measuring pipe (6), and a measuring assembly (7) is arranged on the lift measuring pipe (6);
the measuring assembly (7) comprises a flange plate (701) arranged at the upper end of the lift tube (6), a sealing cover (702) is connected to the flange plate (701), a pressure bearing plate (703) is arranged in the sealing cover (702) in a sliding mode, a resistance spring (704) is connected to the inner side of the pressure bearing plate (703), the other end of the resistance spring (704) abuts against the inner end of the sealing cover (702), an exhaust hole (705) is formed in the sealing cover (702), a guide rod (706) for plugging the exhaust hole (705) is inserted in the exhaust hole (705) in a sliding mode, a jack (707) corresponding to the exhaust hole (705) is formed in the pressure bearing plate (703), the inner end of the guide rod (706) penetrates through the jack (707), and the other end of the guide rod (706) is connected with a floating plate (709) through a plugging assembly (708), and the plugging assembly (708) is used for plugging the jack (707).
2. The axial flow pump head measuring apparatus of claim 1, wherein: the bearing plate (703) is provided with a caulking groove (7031) for embedding a floating plate (709), one side of the bearing plate (703) positioned on the caulking groove (7031) is also provided with a conical groove (7032), the conical groove (7032) is provided with a waterproof convex ring (7033), and the waterproof convex ring (7033) is embedded with a waterproof rubber ring;
the blocking assembly (708) comprises a plug (7081) which is arranged on the outer side of the guide rod (706) in a conical shape, and a circle of annular grooves (7082) matched with the waterproof convex rings (7033) are arranged on the outer side of the plug (7081).
3. The axial flow pump head measuring apparatus of claim 2, wherein: the inner wall of the sealing cover (702) is provided with a lug (7021) for limiting the resistance spring (704), the resistance spring (704) is sleeved on the outer side of the lug (7021), the exhaust hole (705) penetrates through the lug (7021), and a tangent plane groove (7022) is formed in one end of the lug (7021) located in the exhaust hole (705);
the guide rod (706) is arranged in two sections and comprises a first section (7061) and a second section (7062) which are connected with each other, the diameter of the first section (7061) is smaller than that of the second section (7062), and a circle of sealing ring (7063) matched with the tangent plane groove (7022) is arranged on the outer side of the second section (7062);
the guide rod (706) is provided with scale values on the first section (7061).
4. A pump head measuring apparatus according to claim 3, wherein: the connecting mechanism (5) comprises a fixed seat (501) arranged on the outer side of the lift measuring pipe (6), two rotating shafts (801) are further rotatably arranged on the lift measuring pipe (6), semicircular valve plates (502) are arranged on the two rotating shafts (801), the upper ends of the two rotating shafts (801) penetrate through the fixed seat (501), and gears (503) are coaxially arranged on the two rotating shafts (801);
a through hole (504) is formed in the middle of the fixing seat (501), a traction rod (505) is inserted in the through hole (504) in a sliding mode, teeth (506) are arranged on two sides of the traction rod (505), and the teeth (506) are connected with gears (503) on two sides in a meshed mode;
the utility model discloses a traction rod, including traction rod (505), fixing base (501), locating seat (508) are provided with in the one end that locating hole (507) was kept away from to one end of traction rod (505), locating seat (508) are U type setting, and reset spring (509) is installed to the inboard of locating seat (508), the other end of reset spring (509) supports the other end at traction rod (505).
5. The axial flow pump head measuring apparatus of claim 4, wherein: the utility model discloses a water outlet pipe, including outlet pipe (4), socket (401) are provided with in the outside of outlet pipe (4), guide hole (402) with drawbar (505) assorted are seted up to the side of socket (401), the top slip grafting of socket (401) has locating pin (403), mutual matching joint between locating pin (403) and locating hole (507).
6. The axial flow pump head measuring apparatus of claim 4, wherein: a fastening mechanism (9) is arranged above the fixed seat (501);
the fastening mechanism (9) comprises a ratchet (901) coaxially arranged on one rotating shaft (801), a pawl (902) is rotatably arranged on one side of the ratchet (901), and a hexagonal limiting block is arranged at the top end of the rotating shaft (801) on the ratchet (901).
7. The axial flow pump head measuring apparatus of claim 1, wherein: one end of the water outlet pipe (4) and one end of the lift measuring pipe (6) which are mutually inserted are provided with a sealing mechanism (10);
the sealing mechanism (10) comprises an annular raised strip (1001) arranged on the inner wall of a lift pipe (6), a tangent plane (1002) is formed in one side of the annular raised strip (1001), a ring groove (1003) is formed in the tangent plane (1002), an annular block (1004) is embedded in the ring groove (1003) in a sliding mode, an arc-shaped channel (1005) for air guide is formed in the annular raised strip (1001), a plurality of sliding grooves (1006) are formed in the opposite side of the ring groove (1003), a piston (1007) is connected in the sliding way in the plurality of sliding grooves (1006), two ends of the arc-shaped channel (1005) are respectively arranged on one side of the ring groove (1003) and one side of the sliding groove (1006), an ejector rod (1008) is connected to one side of the piston (1007), and a compression ring (1009) is connected to the other end of the ejector rod (1008).
The end part of the water outlet pipe (4) is provided with an inclined pressing block (404) matched with a tangential surface (1002) of the annular convex strip (1001), and the inclined pressing block (404) is provided with a circle of pressing blocks (405) matched with the annular blocks (1004).
8. The axial flow pump head measuring apparatus of claim 7, wherein: the side surface of the valve plate (502) is attached to the pressing ring (1009).
9. The axial flow pump head measuring apparatus of claim 4, wherein: the outside fixedly connected with slide bar (406) of outlet pipe (4), the outside fixedly connected with guide holder (601) of survey head pipe (6), sliding grafting between guide holder (601) and slide bar (406).
10. A measuring method for realizing the axial flow pump head measuring device according to any one of claims 1-9, characterized in that the measuring method comprises:
step one: starting a motor (301), wherein the output end of the motor (301) is in transmission connection with a rotating shaft (801), the impeller (8) starts to rotate through a driving mechanism (3), water flow is driven to be sucked from the water inlet pipe (2) by rotation of the impeller (8), pressure is generated under the action of the water flow through the impeller (8), the water flow is pushed to the other end of the pump body (1) through pressurization of the impeller (8), and the water flow is discharged through the water outlet pipe (4);
step two: in the process of rising of the water surface, air is extruded to the upper end of the lift pipe (6), at the moment, a gap exists between the floating plate (709) and the pressure-bearing disc (703) and is not contacted with the water surface, the first section (7061) of the guide rod (706) is positioned in the exhaust hole (705), because the diameter of the first section (7061) is smaller than the inner diameter of the exhaust hole (705), air can be discharged through the gap and the exhaust hole (705), after the water surface is contacted with the floating plate (709), the floating plate (709) gradually moves upwards, the guide rod (706) is driven to move upwards in the moving process, the guide rod (706) gradually transits from the first section (7061) to the second section (7062) in the moving process, the floating plate (709) is completely embedded in the embedded groove (7031), the second section (7062) is inserted into the exhaust hole (705), the exhaust hole (705) is blocked, the air is extruded and exhausted at the same time, and the accuracy of measured data is ensured, and the guide rod (706) moves upwards and downwards in the moving process;
the movement of the guide rod (706) is converted into measurement data, the scale value on the guide rod (706) can be used for directly reading the measurement result, and the current lift height can be determined according to the position of the guide rod (706).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311380892.8A CN117108523B (en) | 2023-10-24 | 2023-10-24 | Axial flow pump lift measuring device and measuring method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311380892.8A CN117108523B (en) | 2023-10-24 | 2023-10-24 | Axial flow pump lift measuring device and measuring method |
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| CN117108523A true CN117108523A (en) | 2023-11-24 |
| CN117108523B CN117108523B (en) | 2024-02-02 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106762709A (en) * | 2016-12-13 | 2017-05-31 | 合肥工业大学 | A kind of micro- lift vertical axial-flow pump lift measurement apparatus and measuring method |
| CN110566474A (en) * | 2019-10-15 | 2019-12-13 | 中国计量大学 | Water pump test device capable of measuring wide lift range |
| CN213016746U (en) * | 2020-09-08 | 2021-04-20 | 石家庄石一泵业有限公司 | Pump body lift flow detection device |
| CN216518705U (en) * | 2021-12-14 | 2022-05-13 | 欧非亚美检测技术(浙江)有限公司 | Water pump lift flow measuring device |
| CN217712996U (en) * | 2022-03-10 | 2022-11-01 | 上海三清给水设备有限公司 | Water pump lift detection device for water pump production |
| CN219605537U (en) * | 2022-12-29 | 2023-08-29 | 陕西中安鸿发环境科技有限责任公司 | Water pump lift detection device |
-
2023
- 2023-10-24 CN CN202311380892.8A patent/CN117108523B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106762709A (en) * | 2016-12-13 | 2017-05-31 | 合肥工业大学 | A kind of micro- lift vertical axial-flow pump lift measurement apparatus and measuring method |
| CN110566474A (en) * | 2019-10-15 | 2019-12-13 | 中国计量大学 | Water pump test device capable of measuring wide lift range |
| CN213016746U (en) * | 2020-09-08 | 2021-04-20 | 石家庄石一泵业有限公司 | Pump body lift flow detection device |
| CN216518705U (en) * | 2021-12-14 | 2022-05-13 | 欧非亚美检测技术(浙江)有限公司 | Water pump lift flow measuring device |
| CN217712996U (en) * | 2022-03-10 | 2022-11-01 | 上海三清给水设备有限公司 | Water pump lift detection device for water pump production |
| CN219605537U (en) * | 2022-12-29 | 2023-08-29 | 陕西中安鸿发环境科技有限责任公司 | Water pump lift detection device |
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| CN117108523B (en) | 2024-02-02 |
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