CN115479019A

CN115479019A - Large flow deep well pump

Info

Publication number: CN115479019A
Application number: CN202211281500.8A
Authority: CN
Inventors: 徐�明; 朱青松; 陆先高
Original assignee: Wenling Zhengfeng Digital Electromechanical Technology Co ltd
Current assignee: Wenling Zhengfeng Digital Electromechanical Technology Co ltd
Priority date: 2022-10-19
Filing date: 2022-10-19
Publication date: 2022-12-16

Abstract

The invention provides a large-flow deep-well pump.A guide seat is internally provided with an impeller and a guide body, a medium circulation channel is enclosed between the inner wall surface of the guide seat and the impeller and the guide body, and the medium circulation channel is from a discharge port of the impeller to a water inlet of the guide body and is of a variable guide structure with a gradually reduced and then gradually expanded circulation area; when the check valve is opened, an annular water outlet cavity is enclosed between the check valve and the water pump outlet, and the flow areas of the annular water outlet cavity and the flow guide seat are basically the same. The medium circulation channel for communicating the impeller with the guide seat in the guide seat is provided with the unchanged guide structure, the rotational flow capacity of the water flow discharged by the impeller is improved by gradually reducing the circulation area, and the later gradually-expanding structure ensures that the water flow energy is converted into potential energy, thereby ensuring the water pumping lifting capacity. Meanwhile, the annular water outlet cavity is arranged at the position of the one-way valve, so that water flow is guided out by the flow guide seat, the flow areas of the water flow are kept basically the same through the position of the one-way valve, the energy loss is reduced, and the lifting capacity is kept.

Description

Large flow deep well pump

Technical Field

The invention relates to the technical field of deep-well pumps, in particular to a high-flow deep-well pump.

Background

The deep well pump is a pump which integrates a motor and a pump into a whole and is immersed into an underground well for pumping and conveying water, and is widely applied to farmland drainage and irrigation, industrial and mining enterprises, urban water supply and drainage, sewage treatment and the like.

A multistage transmission matched guide seat is arranged in a pump body of the deep well pump, the impeller in the guide seat is matched with a guide body to pump water for guide, and finally the water is discharged through a pump water outlet at the top of the pump body. The impeller rotates to output water flow in a rotational flow mode, a circle of rudder blades are arranged on the bottom surface of the flow guide body and are opposite to the outlet of the impeller, and the water flow discharged by the impeller is guided by the rudder blades in a rotational flow mode, is sent to the top of the flow guide body and is finally discharged. For a large-flow deep-well pump, although the existing water pumping and guiding structure of the impeller and the guide body ensures rotational flow conveying of water flow, the conveying kinetic energy of the water flow is limited, and the water pumping requirement of the large-flow deep-well pump is difficult to meet.

Disclosure of Invention

In view of this, the present invention provides a high-flow deep-well pump to meet the high-flow water pumping requirement of the deep-well pump.

In order to achieve the purpose, the invention provides the following technical scheme:

a large-flow deep-well pump comprises a pump body, wherein a multi-stage flow guide seat driven by an impeller shaft is arranged in the pump body, a pump water outlet is formed in the tail end of the multi-stage flow guide seat, and a one-way valve matched with the pump water outlet in a plugging mode is arranged at the pump water outlet;

an impeller and a flow guide body are arranged in the flow guide seat, a medium circulation channel is defined by the inner wall surface of the flow guide seat and the impeller and the flow guide body, and the medium circulation channel is from a discharge port of the impeller to a water inlet of the flow guide body and is of a variable flow guide structure with a gradually reduced and gradually expanded flow area;

when the check valve is opened, an annular water outlet cavity is defined by the check valve and the water pumping outlet, and the flow areas of the annular water outlet cavity and the flow guide seat are basically the same.

Preferably, in the high-flow deep-well pump, the inner wall of the diversion seat has a diversion arc surface communicated from the discharge port to the upper end surface of the diversion body, an annular water inlet is enclosed between the periphery of the diversion body and the diversion arc surface, and the flow area from the discharge port of the impeller to the annular water inlet is gradually reduced; the flow area from the annular water inlet to the water inlet of the flow guide body is gradually enlarged.

Preferably, in the high flow rate deep well pump described above, the discharge port of the impeller has a first flow height, the annular water inlet has a second flow width, and the water inlet of the flow conductor has a third flow height;

the second flow width/first flow height is 0.4-0.6; the second flow width/third flow height is 0.4-0.6.

Preferably, in the above large-flow deep-well pump, the second flow-through width/first flow-through height is 0.5; the second flow width/third flow height is 0.5.

Preferably, in the high-flow deep-well pump, the discharge port of the impeller has a diversion inclination angle facing the guide arc surface of the diversion seat, the lower edge of the discharge port is connected with the diversion arc surface, and the upper end surface and the lower end surface of the discharge port of the impeller are both arranged facing the diversion arc surface.

Preferably, in the high-flow deep-well pump, the check valve includes a blocking valve body and a valve body guide frame for guiding and supporting the blocking valve body, and the pump water outlet has a first water outlet part communicated with the flow guide seat and a second water outlet part matched with the blocking valve body;

the inner ring of the second water outlet part is provided with a cambered surface flow guide surface, and the plugging valve body is provided with a cambered surface pressing surface which forms an annular water outlet cavity together with the cambered surface flow guide surface.

Preferably, in the large-flow deep-well pump, the valve body guide frame is erected at the rear end of the second water outlet portion, a valve rod extends out of the plugging valve body, a sliding guide hole is formed in the valve body guide frame, and the sliding rod is arranged in the sliding guide hole in a sliding manner.

Preferably, in the large-flow deep-well pump, the plugging end of the plugging valve body is provided with a valve-opening push hole, the valve-opening push hole axially extends into the plugging valve body, and the opening end of the valve-opening push hole is arranged opposite to the first water outlet part;

the impeller shaft extends out of the first water outlet part, a rubber bearing is arranged at the shaft end of the impeller shaft, and the valve opening push hole is sealed to be in contact fit with the end of the rubber bearing.

Preferably, in the high-flow deep-well pump, the valve body guide frame comprises two guide frame blades which are crossed, a cylindrical guide cylinder is arranged at the joint position of the middle parts of the two guide frame blades, and the sliding guide hole is arranged in the cylindrical guide cylinder.

Preferably, in above-mentioned large-traffic deep-well pump, the top surface of baffle sets up the stator of a plurality of helical structures, the stator has the water conservancy diversion stator of first length, and the stator that converges of second length, the length of the stator that converges is greater than the length of water conservancy diversion stator, converge the stator with water conservancy diversion stator is arranged occasionally.

Preferably, in the large-flow deep-well pump, one or more guide vanes are arranged between two adjacent converging guide vanes, and the outer rings of the guide vanes and the converging guide vanes extend to the same outer diameter position of the flow guide body.

The invention provides a large-flow deep-well pump which comprises a pump body, wherein a multi-stage flow guide seat driven by an impeller shaft is arranged in the pump body, a pump water outlet is formed in the tail end of the multi-stage flow guide seat, and a one-way valve matched with the pump water outlet in a plugging manner is arranged at the pump water outlet; an impeller and a flow guide body are arranged in the flow guide seat, a medium circulation channel is formed by the inner wall surface of the flow guide seat and the impeller and the flow guide body, the medium circulation channel extends from a discharge port of the impeller to a water inlet of the flow guide body, and the medium circulation channel is of a variable flow guide structure with a gradually reduced and gradually expanded circulation area; when the one-way valve is opened, an annular water outlet cavity is enclosed between the one-way valve and the water pumping outlet, and the flow areas of the annular water outlet cavity and the flow guide seat are basically the same. The medium circulation channel for communicating the impeller with the guide seat in the guide seat is provided with the unchanged guide structure, the rotational flow capacity of the water flow discharged by the impeller is improved by gradually reducing the circulation area, and the later gradually-expanding structure ensures that the water flow energy is converted into potential energy, thereby ensuring the water pumping lifting capacity. Meanwhile, the annular water outlet cavity is arranged at the position of the one-way valve, so that water flow is led out from the flow guide seat, the flow areas of the water flow are kept basically the same through the position of the one-way valve, the energy loss is reduced, and the lifting capacity is kept.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a cross-sectional view of a deep well pump flow directing construction provided by the present invention;

fig. 2 is a schematic structural view of the current carrier of fig. 1;

FIG. 3 is a schematic view of the valve body of FIG. 1 in an open configuration;

FIG. 4 is a schematic view of the valve body of FIG. 1 in a closed configuration;

fig. 5 is a perspective sectional view of the valve body end of fig. 1.

Detailed Description

The invention discloses a deep-well pump diversion structure, which meets the requirement of a deep-well pump on large-flow pumping; the invention also provides a deep-well pump.

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1-5, the present invention provides a cross-sectional view of a deep well pump flow directing structure; fig. 2 is a schematic structural view of the current carrier of fig. 1; FIG. 3 is a schematic view of the valve body of FIG. 1 in an open configuration; FIG. 4 is a schematic view of the valve body of FIG. 1 in a closed configuration; fig. 5 is a cross-sectional perspective view of the valve body end of fig. 1.

A diversion cavity 60 is enclosed in a diversion seat 6 of the deep well pump, an impeller 61 and a diversion body 62 are arranged in the diversion cavity 60, the impeller 61 is dragged to rotate by an impeller shaft 103, and the impeller 61 rotates to press water into the diversion cavity 60 and lead the water out from a water outlet at the top of the diversion body 62.

The impeller 61 is rotated by the impeller to drive water flow to flow in a rotating vortex mode, the water flow enters from the bottom of the guide seat 6, is guided and extruded to the circumferential direction of the impeller 61 through the middle of the impeller 61, a water channel is driven to flow upwards at the same time, the guide body 62 is fixedly arranged in the guide seat 6, the water flow flows out from the circumferential direction of the impeller 61, and then is guided by the guide vanes at the lower end of the guide body 62 in the existing deep well pump, the flow of the impeller guided by the impeller is guided, the vortex flow direction is adjusted, so that the water flow flows into the upper end face of the guide body through the arc-shaped inner wall face of the guide seat, a plurality of guide vanes are arranged on the upper end face of the guide body, the water flow entering the vortex is guided by the guide vanes, is lifted upwards through the rotating flow of the guide vanes through the guide vanes, and is sent into a water outlet at the top of the guide seat through the guide vanes and finally pumped out through a water outlet pipe at the top of the deep well pump.

And to the water conservancy diversion seat structure that the rudder blade was arranged to current water conservancy diversion seat lower extreme, the rudder blade can block rivers when carrying out the water conservancy diversion to impeller 61 pump water, reduces the rivers velocity of flow, is difficult to satisfy the pump water requirement of large-traffic deep-well pump.

The embodiment provides a large-flow deep well pump, which comprises a pump body 1, wherein a multi-stage guide seat 6 driven by an impeller shaft 103 is arranged in the pump body 1, the lower end of the multi-stage guide seat 6 is supported by an inlet seat 102, the top end of the multi-stage guide seat is provided with a pump water outlet 2, and the pump water outlet 2 is provided with a one-way valve matched with the pump water outlet in a plugging way; an impeller 61 and a flow guide body 62 are arranged in the flow guide seat 6, a medium circulation channel is defined by the inner wall surface of the flow guide seat 6 and the space between the impeller 61 and the flow guide body 62, the medium circulation channel extends from a discharge port of the impeller 61 to a water inlet of the flow guide body 62, and the medium circulation channel is of a variable flow guide structure with a gradually reduced and gradually expanded flow area; when the one-way valve is opened, an annular water outlet cavity is enclosed between the one-way valve and the water pumping outlet, and the flow areas of the annular water outlet cavity and the flow guide seat 6 are basically the same. The medium circulation channel for communicating the impeller with the guide seat in the guide seat is provided with the unchanged guide structure, the rotational flow capacity of the water flow discharged by the impeller is improved by gradually reducing the circulation area, and the later gradually-expanding structure ensures that the water flow energy is converted into potential energy, thereby ensuring the water pumping lifting capacity. Meanwhile, the annular water outlet cavity is arranged at the position of the one-way valve, so that water flow is led out from the flow guide seat, the flow areas of the water flow are kept basically the same through the position of the one-way valve, the energy loss is reduced, and the lifting capacity is kept.

An impeller 61 and a flow guide body 62 are arranged in the flow guide seat 6, the inner wall of the flow guide seat 6 is provided with a flow guide arc surface 601 which guides water flow discharged by the impeller 61 to the flow guide body 62, an annular water inlet is formed between the circumferential edge of the flow guide body 62 and the flow guide arc surface 601 in a surrounding mode, the lower edge of a discharge port of the impeller 61 is connected with the flow guide arc surface 601, the upper edge of the discharge port of the impeller 61 is connected with the bottom edge of the flow guide body 62, a discharge port formed by the impeller 61 in the flow guide seat 6 is communicated with a medium flow guide channel on the top surface of the flow guide body 62 through the annular water inlet.

Compared with the existing impeller diversion structure, the edge of the impeller 61 is connected with the diversion arc surface 601 of the diversion seat 6, and the lower end surface of the diversion body 62 is provided with no rudder blade, so that when the impeller 61 pumps water, pumped water flow directly impacts the diversion arc surface 601 of the inner end surface of the diversion seat 6 and is conveyed to the upper surface of the diversion body 62 by the impeller 61 through the diversion of the diversion arc surface 601, and as the pumped water flow of the impeller 61 is not blocked by the rudder blade, the pumped water can obtain larger pumping kinetic energy, and the pumping water flow requirement of the large-displacement deep-well pump is met.

Rotate by impeller 61 in the water conservancy diversion seat 6 and carry out the pump water, the pump water is discharged after being sent into baffle 62 top through annular water inlet, the circumference edge of baffle 62 forms annular water inlet, impeller 61's discharge port is direct relative with annular water inlet, during the pump water, the rivers that impeller 61 pumps are direct to the blowout of annular water inlet, the pump water converges and leads to the baffle 62 up end behind the circumference of annular water inlet, set up the mode of impeller 61 direct cyclone pump water into through the medium water conservancy diversion passageway in the water conservancy diversion seat 6, the pump water can directly flow in the baffle 62 top surface, reduce the energy loss of pump water, can realize the large-traffic pump water of impeller in the water conservancy diversion seat.

Further, the first flow height H1 of the discharge port of the impeller 61, the second flow width H2 to the annular water inlet, the first flow height H1 being greater than the second flow width H2, and the flow area becoming smaller in the flow direction. Impeller 61 pump water has certain rivers ability of flowing through the discharge port discharge, and is highly diminishing along with the circulation, rivers are the whirl and flow into second circulation width H2 in-process through first circulation height H1 department, can convert and make the rivers velocity of flow further increase to increased the velocity of flow in water conservancy diversion cambered surface 601 lower part, the whirl effect reinforcing, rivers are through further extrusion, more smooth and easy pass through annular water inlet, and kept higher rivers energy.

Further, the water inlet of the flow guiding body 62 has a third flow height H3, the second flow width H2 is smaller than the third flow height H3, and the flow area in the flow direction gradually increases. The water flows through the annular water inlet and is fed into the upper part of the flow guide body 62, a diffusion-shaped medium flow guide channel with the gradually increased water inlet area is arranged at the water inlet between the annular water outlet and the flow guide body 62, the speed of the water flow is gradually reduced along with the increase of the section, the pressure is gradually increased, and the kinetic energy of the water is converted into potential energy. Through the structural adjustment to the water inlet position of baffle 62, guarantee the conversion stability of rivers kinetic energy and potential energy, guarantee that the pump water can be derived smoothly by the baffle, guarantee the water pump flow.

The discharge port of the impeller 61 is directly opposite to the flow guide arc surface 601, the impeller 61 pumps water to directly change the direction of the flow guide arc surface 601 and circulate to the upper part of the flow guide body 62, and meanwhile, an annular water inlet is formed between the circumferential direction of the flow guide body 62 and the flow guide arc surface 601, so that a medium circulation channel between the discharge port of the impeller 61 and the annular water inlet is in a gradually reducing structure, the flow velocity of the water flow is further increased by compressing the water circulation height, the rotational flow energy is improved, and the water flow can smoothly enter the top of the flow guide body 62; meanwhile, the top surface of the medium circulation channel is provided with a gradually-expanding structure between the annular water inlet and the water inlet of the flow guide body 62, so that water flow is decelerated, kinetic energy is converted into potential energy, pump water can smoothly enter the flow guide body and is discharged, and the stable drainage of a large-flow water pump is ensured.

Further, the second flow width H2/first flow height H1 is 0.4 to 0.6; the second flow width H2/third flow height H3 is 0.4 to 0.6. Preferably, H2/H1 is 0.5 and H2/H3 is 0.5. The first circulation height H1 is the water outlet height of the outlet of the impeller 61, the third circulation height H3 is the water inlet position of the guide body 62, the height between the surface of the guide body 62 and the inner wall surface of the guide seat 6 sets the second circulation width H2 of the annular water inlet to be half of the outlet of the impeller 61 and the water inlet of the guide body, so that the water flow discharged by the impeller 61 can generate stable rotational flow and is conveyed to the top of the guide body 62, the energy loss in the water circulation process is reduced as much as possible, and the stability of the guide structure of the impeller is improved.

In this embodiment, the discharge port of the impeller 61 has a diversion inclination angle for discharging water toward the diversion arc surface 601, and both the upper end surface and the lower end surface of the discharge port of the impeller 61 are arranged toward the diversion arc surface 601. Because of the non-rudder blade structure between the outlet of the impeller 61 and the lower surface of the flow guiding body 62, the flow guiding between the water flow entering from the outlet of the impeller 61 and the flow guiding arc surface 601 of the flow guiding seat 6 generates a rotational flow, and the rotational flow and a higher flow speed are utilized, so that the water flow smoothly enters the upper part of the flow guiding seat 6, the outlet of the impeller 61 is provided with an inclined arrangement structure, the radial extension length of the upper end surface of the outlet of the impeller 61 is shorter than the length of the lower end surface of the impeller 61, the outlet of the impeller 61 is the inclined outlet, the direction of the outlet of the impeller 61 faces towards the annular water inlet, in order to ensure that the impeller is smoothly installed into the flow guiding seat 62, the lower end surface of the outlet of the impeller 61 is connected with the bottom edge of the flow guiding arc surface 601, and the water flow flowing from the lower end surface of the impeller 61 directly enters the flow guiding arc surface 601.

The water flow flowing out of the upper end face of the impeller 61 mainly enters through the inner ring of the annular water inlet, the water outlet direction of the water flow is towards the diversion arc-shaped surface 601, and the water outlet direction does not exceed the inner ring of the annular water inlet, so that the water flow discharged from the discharge port of the impeller 61 tends to be extruded into the annular water inlet, the flow choking effect of the bottom face of the flow guide body 62 on the water outlet of the impeller 61 is reduced, the cyclone effect is improved, and the smooth inflow of the water flow is ensured.

As shown in the figure, the index line of the first flow-through width H1 can be regarded as the extension lines of the upper end surface and the lower end surface of the outlet of the impeller 61, and the extension directions of the two extension lines can be regarded as the main outflow directions of the water flow. By arranging the discharge port in an inclined manner, the included angle between the water flow discharged by the impeller 61 and the flow guide arc surface 601 is reduced as much as possible, and the water flow can be basically attached to the flow guide arc surface 601, so that the energy loss caused by the impact between the discharge port and the flow guide arc surface 601 is reduced.

In this embodiment, the impeller 61 pumps water to the upper part of the flow guiding body 62 through the flow guiding seat 6, the water is pumped out through the guide vanes on the flow guiding body 62, for the deep well pump transmitted by the multistage impeller 61, the interstage impeller is used for continuously accelerating the pumping water, the interstage flow guiding body sends the impeller pumping water to the next stage for continuously pumping water, and the pumping water is discharged through the pumping water outlet until the flow guiding body 62 at the topmost end.

The top surface of baffle 60 sets up a plurality of spiral guide vanes 620, it leads to the rivers that the whirl was sent into, upwards lead the whirl when rotatory, rivers are through spiral guide vane 620 water conservancy diversion, go into water pump by baffle 62 water inlet, derive by the baffle delivery port at baffle 62 top, still be the rotation state after rivers flow out, rivers that adjacent spiral guide vane 620 derived interfere with each other, though lead to that the whole trend that is upwards pumping is after baffle 62 converges, can form the vortex each other, influence the uniformity that rivers flow.

In this embodiment, the guide vanes 620 are provided with a first length of guide vanes 621, and a second length of converging vanes 622, the length of converging vanes 622 being greater than the length of guide vanes 621. Meanwhile, the flow collecting guide vanes 622 and the flow guide vanes 621 are arranged occasionally. Through dividing into two sets of different length with stator 620, the two carries out the water conservancy diversion to impeller 61 pump income rivers simultaneously, keeps the whirl of original rivers to carry, simultaneously, sets up to converge stator 622 and water conservancy diversion stator 621 and be different length, accomplishes the water conservancy diversion back at shorter water conservancy diversion stator 621, gets into the longer part that converges stator 622 to can continue the water conservancy diversion to rivers, reduce the mutual interference after rivers flow out by the water conservancy diversion stator between the adjacent guide vane 622 that converges.

Further, the outer rings of the guide vane 621 and the converging vane 622 extend to the same outer diameter position of the guide body 62. The outer rings of the converging guide vanes 622 and the guide vanes 621 are arranged at the same outer diameter position of the guide body 62, so that the pump water can be fed in at the basically same rotational flow angle and rotational flow speed in the circumferential direction of the guide body 62, and the balance and stability of energy transfer of the pump water are ensured.

In a preferred embodiment, one or more flow guide vanes 621 may be disposed between two adjacent converging vanes 622. The positions of the confluence guide vanes 622 and the guide vanes 621, which are overlapped with each other on the guide body, guide water flow, keep the water flow to circulate on the upper surface of the guide body in a spiral shape, reach the tail end of the guide vanes 621, pump water is only restricted by the confluence guide vanes 622, mutual interference between water flows flowing out from the guide vanes 621 is reduced, the confluence guide vanes 622 play a role in stabilizing and guiding the water flow, and interference of the water flow between the adjacent confluence guide vanes 622 is limited. The guide vanes 620 on the upper surface of the flow guide body 62 are divided into the converging guide vanes 622 and the guiding guide vanes 621 which are different in length, so that energy loss between water flows in the water pumping process is reduced, water flow energy is improved, and water pumping flow is guaranteed.

The tail end of the deep well pump flow guide structure is provided with a water outlet structure, the tail part of the pump body 1 is provided with a pump water outlet 2, and the pump body 1 is also internally provided with a sliding arrangement, and a matched plugging valve body 3 is plugged or opened for the pump water outlet 2; the water pumping outlet 2 is provided with a first water outlet part 21 along the water inlet direction and a second water outlet part 22 matched with the plugging valve body 3, the second water outlet part 22 is provided with an arc-shaped guide surface 201, and the plugging valve body 3 is provided with an arc-shaped pressing surface 301 matched with the arc-shaped guide surface 201.

The first water outlet part 21 is communicated with the interior of the pump body, water pumped by the impeller 6 flows through the first water outlet part 21, the first water outlet part 21 is tightly pressed on the impeller guide body, and the inner diameter of the first water outlet part 21 corresponds to the water outlet of the impeller guide body. Owing to arranged the shutoff valve body 3 in the second portion of swimming 22, it can block the pump water, through setting up the arc surface structure with shutoff valve body 3, simultaneously for taking into account the flow balance of the pump body and rear end drain pipe, set up inner wall 201 of second portion of swimming 22 equally into the arc surface water conservancy diversion face, shutoff valve body 3 is compressed tightly the face by the arc surface and is relative with the arc surface water conservancy diversion face, then when rivers pump out and take place the impact with shutoff valve body 3, carry out the water conservancy diversion to rivers by the arc surface structure of shutoff valve body 3, reduce the energy loss of rivers.

A sliding rod 32 extends out of the plugging valve body 3, a sliding guide hole 51 is formed in the valve body guide frame 5, and the sliding rod 32 is arranged in the sliding guide hole 51 in a sliding mode. The plugging valve body 3 is basically along the pump body axial to the shutoff of pump water export, considers simultaneously that the shutoff valve body 3 receives the pump water impact at the pump water in-process, sets up valve body guide frame 5 rather than the cooperation, and valve body guide frame 5 is located the rear end of shutoff valve body 3 roll-off direction, adopts slide bar 32 and the mode of guiding hole 51 that slides with shutoff valve body 3 to slide the direction.

Specifically, the slide rod 32 is a tapered slide rod with an inner diameter gradually reduced from the root to the tip, and the sliding guide hole 51 comprises an inner ring guide wall surface 511 in contact fit with the outer wall of the tapered slide rod, and an inner ring water passing wall surface 512 enclosing a water passing channel with the outer wall of the tapered slide rod; the inner diameter of the inner ring water passing wall surface 512 is larger than that of the inner ring guide wall surface 511.

The valve body guide frame 5 comprises two guide frame blades 52 which are crossed, a cylindrical guide cylinder 53 is arranged at the middle connection position of the two guide frame blades 52, a sliding guide hole 51 is prepared and processed in the cylindrical guide cylinder 53, namely, a mode that 4 or more half guide frame blades 52 are combined with the cylindrical guide cylinder 53 can be arranged, and the valve body guide frame 5 is formed.

It can be understood that, the valve body guide frame 5 supports in the exit position of the pump body 1, and the thickness of its guide frame blade 52 can produce the rivers and block, and especially to the edge of valve body guide frame 5, because the cooperation is sheltered from by shutoff valve body 3 in the middle part, set up water conservancy diversion closed angle 53 at the edge of guide frame blade 52, rivers strike guide frame blade 52 after shunting by water conservancy diversion closed angle 53 to reduce the pump water resistance.

The plugging end of the plugging valve body 3 is provided with a valve opening push hole 31, the valve opening push hole 31 axially extends into the plugging valve body 3, and the opening end of the valve opening push hole 31 is arranged opposite to the first water outlet part 21.

The impeller shaft 103 extends out of the pump body outlet 2, the rubber bearing 4 is arranged at the top shaft end of the impeller shaft 103, the plugging valve body 3 is used for plugging the pump body outlet 2, the valve opening push hole 31 is in contact fit with the end part of the rubber bearing 4, the stability of the sealing structure of the plugging valve body 3 for the pump body outlet 2 is improved, the clamping stagnation of the plugging valve body 3 at the position of the pump body outlet 2 is avoided, and the safety of the sealing structure is improved.

Based on the deep-well pump diversion structure provided in the above embodiment, the invention also provides a deep-well pump, which comprises a pump body 1, wherein the outer ring of the pump body 1 is provided with a pump barrel 101, a plurality of groups of diversion structures which are in transmission fit with the impeller shaft 103 are arranged in the pump barrel 101, the tail end of the outlet of the pump body is provided with a closed valve body, and the diversion structure arranged on the deep-well pump is the deep-well pump diversion structure provided in the above embodiment.

Because the deep-well pump adopts the deep-well pump diversion structure of the embodiment, please refer to the embodiment for the beneficial effects brought by the deep-well pump diversion structure of the deep-well pump.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A large-flow deep-well pump is characterized by comprising a pump body, wherein a multistage guide seat driven by an impeller shaft is arranged in the pump body, the tail end of the multistage guide seat is provided with a pump water outlet, and the pump water outlet is provided with a one-way valve matched with the pump water outlet in a plugging way;

2. The high-flow deep-well pump according to claim 1, characterized in that the inner wall of the diversion seat has a diversion arc surface communicated from the discharge port to the upper end surface of the diversion body, an annular water inlet is enclosed between the periphery of the diversion body and the diversion arc surface, and the flow area from the discharge port of the impeller to the annular water inlet is arranged in a gradually-decreasing manner; the flow area from the annular water inlet to the water inlet of the flow guide body is gradually enlarged.

3. The deep well pump flow directing construction of claim 2, wherein the discharge outlet of the impeller has a first flow through height, the annular water inlet has a second flow through width, and the water inlet of the flow directing body has a third flow through height;

the second flow width/first flow height is 0.4-0.6; the second flow width/third flow height is 0.4 to 0.6.

4. The deep well pump flow directing construction of claim 3, wherein the second flow passage width/first flow passage height is 0.5; the second flow width/third flow height is 0.5.

5. The deep well pump diversion structure of claim 3, wherein the discharge port of the impeller has a diversion inclination angle towards the guiding arc surface of the diversion seat, the lower edge of the discharge port is arranged in connection with the diversion arc surface, and the upper end surface and the lower end surface of the discharge port of the impeller are both arranged towards the diversion arc surface.

6. The deep well pump diversion structure of claim 5, wherein said one-way valve comprises a blocking valve body and a valve body guide frame for guiding and supporting the blocking valve body, and said pump water outlet has a first water outlet portion communicated with said diversion seat and a second water outlet portion matched with said blocking valve body;

7. The deep well pump diversion structure of claim 6, wherein the valve body guide frame is erected at the rear end of the second water outlet portion, a valve rod extends out of the plugging valve body, a sliding guide hole is formed in the valve body guide frame, and the sliding rod is slidably arranged in the sliding guide hole.

8. The deep well pump diversion structure of claim 6, wherein the plugging end of the plugging valve body is provided with a valve opening push hole, the valve opening push hole axially extends into the plugging valve body, and the opening end of the valve opening push hole is arranged opposite to the first water outlet part;

9. The deep well pump guide structure of claim 7, wherein the valve body guide frame comprises two guide frame blades which are crossed, a cylindrical guide cylinder is arranged at the middle joint position of the two guide frame blades, and the sliding guide hole is arranged in the cylindrical guide cylinder.

10. The deep well pump flow guide structure of claim 5, wherein the top surface of the flow guide body is provided with a plurality of guide vanes in a spiral structure, the guide vanes have a first length of flow guide vanes, and a second length of flow converging guide vanes, the length of the flow converging guide vanes is greater than the length of the flow guide vanes, and the flow converging guide vanes are arranged with the flow guide vanes at intervals.

11. The deep well pump flow guide structure of claim 10, wherein one or more flow guide vanes are arranged between two adjacent flow guide vanes, and outer rings of the flow guide vanes and the flow guide vanes extend to the same outer diameter position of the flow guide body.