CN208996970U - A kind of connection cover structure - Google Patents

Abstract

The utility model relates to self priming pump fields, it is disclosed that a kind of connection cover structure, for connecting motor and pump case ontology, including connection cover ontology, bearing chamber is provided in the connection cover ontology, the bearing chamber interior walls coaxially offer buffering annular groove, elastic ring is embedded in the buffering annular groove, the bearing chamber intermediate gap is equipped with bearing, and shaft and the coaxial bearing of the motor are equipped with, and the elastic ring is abutted with bearing elasticity；When motor work, rotor in shaft is moved to optimum rotation center in motor in the magnetic field of stator, so that the stress in shaft off-axis direction, shaft pushes bearing to side, it is squeezed between bearing and elastic ring, elastic ring has certain elastic deformation, and then realizes the offset of shaft, the unilateral damage for occurring to squeeze acceleration bearing between bearing and bearing chamber interior walls is avoided, and then improves the service life of bearing and motor.

Description

A kind of connection cover structure

Technical field

The utility model relates to self priming pump field, in particular to a kind of connection cover structure.

Background technique

The existing pump housing includes motor and pump case, and the runner for increasing hydraulic pressure is provided in pump case, and runner includes sequentially Water inlet flow channel, blade wheel chamber and the air-water separation chamber of design are provided with impeller in the shaft of motor, and impeller is set to blade wheel chamber In, impeller rotation increases flow rate of water flow in pump case, and connection cover is provided between motor and pump case, is provided with machinery in connection cover Sealing room and bearing chamber, the shaft of motor sequentially pass through bearing chamber and mechanical sealing chamber, and connection cover is along the both ends of shaft axial direction It is fixedly connected respectively with the shell of motor and pump case.

As in above-mentioned public technology, when produce connection cover, connection cover periphery circle, mechanical sealing chamber and bearing chamber add Work must all be processed using substep, and there are unavoidable errors between the benchmark for causing three to process, and are arranged in shaft There is rotor and there is cooperation between the stator in motor, can also be deposited between the center of rotation of rotor theory and the center of bearing chamber It causes shaft strength uneven so that shaft can squeeze bearing during rotating in deviation, in turn results in the service life drop of bearing Low, there are shortcomings to be modified.

Utility model content

The purpose of the utility model is to provide a kind of connection cover structure, the elastic ring in bearing chamber is abutted with bearing elasticity, Enable shaft that certain radial deflection occurs, reduces compression situation in bearing unilateral side caused by concentricity difference, and then promoted The service life of bearing.

The above-mentioned technical purpose of the utility model has the technical scheme that

A kind of connection cover structure, for connecting motor and pump case ontology, including connection cover ontology, in the connection cover ontology It is provided with bearing chamber, the bearing chamber interior walls coaxially offer buffering annular groove, are embedded with elastic ring in the buffering annular groove, described Bearing chamber intermediate gap is equipped with bearing, and shaft and the coaxial bearing of the motor are equipped with, the elastic ring and bearing Elasticity abuts.

By using above-mentioned technical proposal, bearing chamber intermediate gap is equipped with bearing, the coaxial grafting of the shaft in motor It is abutted in bearing, and between bearing and elastic ring；When motor work, the rotor in shaft is in motor in the magnetic field of stator It is moved to optimum rotation center, so that the stress in shaft off-axis direction, shaft pushes bearing, bearing and bullet to side Property circle between squeeze, elastic ring has certain elastic deformation, and then realizes the offset of shaft, avoids in bearing and bearing chamber It is unilateral between wall to occur to squeeze the damage for accelerating bearing, and then improve the service life of bearing and motor.

The utility model is further arranged to: mechanical sealing chamber is additionally provided in the connection cover ontology, the machinery is close Envelope is provided with seal assembly in room, and the seal assembly includes the packer ring being sequentially coaxially sheathed in shaft, wear ring And lubrication ring, the packer ring are extended with abutment ring along axis, described wear ring one end is embedded in abutment ring, described Abutment ring peripheral side is connected to mechanical seal indoor.

By using above-mentioned technical proposal, abutment ring has certain elastic force, when so that shaft moving radially, supports Certain deformation can be generated by connecing ring, reduce the magnetic field center deviation of the axis and rotor of shaft in the stator, reduce shaft pair The lateral compression power of bearing, promotes the service life of bearing.

The utility model is further arranged to: the packer ring uses nitrile rubber, and the connection cover ontology is close One end of pump case ontology and be located at blade wheel chamber and air-water separation chamber connectivity part and offer inlet opening, and on the connection cover ontology and Apopore is offered in mechanical seal chamber interior walls, the inlet opening is connected to setting with apopore and forms connectivity slot.

By using above-mentioned technical proposal, wherein packer ring uses nitrile rubber, and nitrile rubber is heated to be reduced, impeller Liquid in room drives the heat in seal assembly, and then ensure that the elasticity between packer ring and shaft abuts branch Support.

The utility model is further arranged to: the connection cover ontology towards pump case ontology one end and be located at inlet opening at It is provided with high pressure catch basin.

By using above-mentioned technical proposal, high pressure catch basin increases the fluid flow at inlet opening, and has buffered liquid Flow velocity allow fluid to it is stable entered in mechanical sealing chamber by inlet opening, promote the stabilization that cools down to seal assembly Property.

The utility model is further arranged to: the connection cover ontology towards pump case ontology one end and be located at water inlet flow channel Blade wheel chamber connectivity part is provided with low-pressure drainage slot, on the connection cover ontology and be located at low-pressure drainage slot and high pressure catch basin it Between form partition panel.

By using above-mentioned technical proposal, partition panel increases liquid and directly flows into low-pressure drainage from high pressure catch basin The pressure of slot so that liquid stabilising by mechanical sealing chamber, and low-pressure drainage slot increases fluid flow, so that liquid exists Stabilization is flowed out from mechanical sealing chamber after heat exchange, avoids also accumulating in mechanical sealing chamber, so that in high pressure catch basin It is lasting to cool down to seal assembly in the entrance mechanical sealing chamber that liquid can be stable.

The utility model is further arranged to: the connection cover ontology is towards offering for connecting on one end of pump case ontology The circulation groove of logical low-pressure drainage slot and High Pressure Drain slot.

It is low for being connected to towards offering on one end of pump case ontology in connection cover ontology by using above-mentioned technical proposal The circulation groove of pressure sink and high pressure catch basin, the liquid to exchange heat between the liquid in circulation groove and blade wheel chamber by mixing It closes, and flows to high pressure catch basin again, improve the smoothness of liquid flowing.

The utility model is further arranged to: the connectivity slot inner wall opposite with inlet opening is provided with guidance water flow to remote Drainage face from pump case bulk flow.

By using above-mentioned technical proposal, liquid is rushed along drainage face by stable after apopore from flowing in inlet opening Seal assembly is hit, the stability that liquid cools down to seal assembly is promoted.

In conclusion the utility model has the following beneficial effects:

It is abutted between bearing and elastic ring in bearing chamber, elastic ring has certain elastic deformation, when bearing is by shaft Lateral compression power, shaft squeezes elastic ring and radial deflection occurs, and avoids between bearing and bearing chamber interior walls unilateral squeeze Accelerate the damage of bearing, and then improves the service life of bearing and motor.

Detailed description of the invention

Fig. 1 is a kind of general assembly structural schematic diagram of noise reduction self priming pump；

Fig. 2 is the perspective view of the explosion for embodying liquid accelerating structure and cooling mechanism；

Fig. 3 is the half-section diagram for pump body structure；

Fig. 4 is the perspective view of the explosion for embodying water flow check valve structure；

Fig. 5 is the schematic diagram for embodying connection cover body construction；

Fig. 6 is the half-section diagram for embodying mounting structure in connection cover ontology；

Fig. 7 is the perspective view of the explosion for embodying impeller installing

Fig. 8 is the schematic diagram for embodying radiator structure；

Fig. 9 is the schematic diagram for embodying radiator structure footing.

Appended drawing reference: A, motor；A1, casing；A11, cooling fin；A2, shaft；A21, cooperation plane；A3, radiator structure； A4, heat dissipation plate；A41, socket ring；A42, rotating disc；A43, securing plate；A44, the first arcwall face；A45, the second arcwall face；A5, Blade；A51, interconnecting piece；A52, cancave cambered surface；A53, convex globoidal；A54, lengthened plate；A6, protective cover；A61, connecting plate；A62, lead to Aerofoil；A621, air inlet hole；

B, the pump housing；B1, pump case ontology；B11, hyoplastron；B111, gas-water separation slot；B112, circular arc chamfering；B113, guidance are oblique Face；B14, main partition；B2, water inlet flow channel；B21, preceding runner；B22, rear runner；B3, blade wheel chamber；B31, pressurization water inlet；B32, It is pressurized water outlet；B4, air-water separation chamber；B5, demarcation plate；B6, water flow check valve；B7, fixed spool；B8, upper valve body；B81, peace Dress portion；B82, guide post；B821, positioning are stupefied；B83, screwed ring；B84, magnetic induction switch；B9, lower valve body；B91, slideway portion； B911, water outlet；B92, embedding part；B921, primary sealing area；B922, communication port；B923, the first sealing ring；B10, slide-valve Core；B101, secondary sealing area；B102, guide groove；B103, locating slot；B104, magnet；B105, discharge port；It is B106, second close Seal；B107, fixed ring；B108, clump weight；B11, clamping ring；B12, support spring；B13, the second joint angle；B14, third Sealing ring；

C, connection cover ontology；C1, mechanical sealing chamber；C2, bearing chamber；C21, buffering annular groove；C22, elastic ring；C3, water inlet Hole；C4, apopore；C5, connectivity slot；C51, drainage face；C6, high pressure catch basin；C7, low-pressure drainage slot；C8, partition panel；C9, stream Through slot；C10, clamping groove；C101, third sealing surface；C11, the first joint angle；C12, adjustment gap；C13, bearing；C14, sealing Component；C141, packer ring；C142, abutment ring；C143, wear ring；C144, lubrication ring；

D, impeller；D1, hydraulic balance hole；D2, protector；D21, protective plate；D22, it is embedded ring；D3, rhone one；D31, Push plate one；D4, rhone two；D41, push plate two.

Specific embodiment

The utility model is described in further detail below in conjunction with attached drawing.

As depicted in figs. 1 and 2, a kind of connection cover structure, including for the connection cover ontology C in self priming pump, self priming pump packet Include motor A, pump housing B and the connection cover ontology C for connecting the two.Motor A includes casing A1 and is set in casing A1 Shaft A2, pump housing B includes the pump case ontology B1 and impeller D for being rotatably dispose in pump case ontology B1, and in pump case ontology B1 It is provided with the pressurization runner for increasing flow rate of liquid, casing A1 and pump case ontology B1 are connected and fixed by connection cover ontology C, and leaf It takes turns D coaxial sleeve to be set on shaft A2, starts motor A, shaft A2 impeller D rotation, impeller D pushes the liquid in pump case ontology B1 Body, and then realize that the liquid lift in pump housing B increases.

As shown in Figure 3 and Fig. 4 shown in, in pump case ontology B1 pressurization runner include liquid successively pass through water inlet flow channel B2, Blade wheel chamber B3 and air-water separation chamber B4.It is provided in pump case ontology B1 and between water inlet flow channel B2 and air-water separation chamber B4 Main partition B14 is respectively formed the pressurization of connection water inlet flow channel B2 and blade wheel chamber B3 in main partition by the two sides of the nearly blade wheel chamber B3 of B14 Water inlet B 31 and connection blade wheel chamber B3 and air-water separation chamber B4 are pressurized water outlet B 32, and on pump case ontology B1 and are located at It is extended with hyoplastron B11 to main partition B14 at pressurization water outlet B 32, gas-water separation slot B111, air water are offered on hyoplastron B11 Air-water separation chamber B4 is connected to by separating tank B111 with blade wheel chamber B3, and liquid enters blade wheel chamber B3 from water inlet flow channel B2, wherein liquid In gas be piled up at hyoplastron B11, and entered in air-water separation chamber B4 by gas-water separation slot B111, liquid then flows to increasing It extrudes mouth of a river B32 and enters air-water separation chamber B4, realize the purpose of gas-liquid separation, avoid seizing pressurization since the density of gas is smaller Water outlet B 32, and then liquid is improved by the stability of pressurization water outlet B 32, realize the purpose for improving liquid lift.

As shown in Figure 3 and shown in Fig. 4, wherein hyoplastron B11 is arc-shaped towards the setting of the side of blade wheel chamber B3, reduces liquid and exists The resistance flowed in blade wheel chamber B3, and then reduce the noise that friction generates when liquid flows, and gas-water separation slot B111 is along impeller D Setting is radially extended along blade wheel chamber B3, by centrifugal force, the direction of centrifugal force and gas-water separation slot B111 in gas flow Extending direction it is consistent, and then lift gas reduces gas heap in blade wheel chamber B3 by the fluency of gas-water separation slot B111 Burst the noise of generation after product, and one end of blade wheel chamber B3 is provided with circular arc chamfering B112 in gas-water separation slot B111, when When gas passes through gas-water separation slot B111, reduces the explosion that gas forms bubble, further reduce the generation of noise；And One end of hyoplastron B11 towards main partition B14 are arranged in parallel with lead-in chamfered B113, lead-in chamfered B113 towards blade wheel chamber B3, when Liquid flows to pressurization water outlet B 32, lead-in chamfered B113 increase liquid by flow, and reduce hyoplastron B11 and liquid Cutting force between body, and then reduce liquid and pass through the noise that generates when pressurization water outlet B 32.

As shown in Figure 3 and shown in Fig. 4, it is provided with demarcation plate B5 in pump case ontology B1 and in water inlet flow channel B2, point Water inlet flow channel B2 is separated into preceding runner B21 and rear runner B22 by partition B5, and water flow check valve B6 is provided on demarcation plate B5, After hydraulic pressure difference in current runner B21 and rear runner B22 reaches certain difference, the liquid in preceding runner B21 is unidirectional by water flow Hair enters in rear runner B22, and is entered in air-water separation chamber B4 by blade wheel chamber B3, realizes the purpose that liquid accelerates, but current When runner B21 is lower than hydraulic in rear runner B22, water flow check valve B6 block liquid by avoiding the liquid in rear runner B22 Body is flow backwards, so that the steering of impeller D and the flow direction of liquid be avoided to generate damage and production that biggish resistance causes impeller D on the contrary Raw noise.

As shown in Figure 3 and shown in Fig. 4, water flow check valve B6 includes fixed spool B7 and sliding valve core B10, fixed spool B7 It is fixed between pump case ontology B1 and demarcation plate B5 and has been connected to preceding runner B21 and rear runner B22, sliding valve core B10 sliding is set It is placed in fixed spool B7, runner B21 and rear stream before being connected in fixed spool B7 is opened and closed by the mobile realization of sliding valve core B10 The communication port B922 of road B22.

As shown in Figure 3 and shown in Fig. 4, fixed spool B7 includes the upper valve body B8 being fixed on pump case ontology B1 and fixation In the lower valve body B9 on demarcation plate B5, lower valve body B9 include the embedding part B92 being embedded on demarcation plate B5 and for limiting cunning The slideway portion B91 of movable valve plug B10 moving direction, the upper end of slideway portion B91 are connected to the lower end upper valve body B8, and upper valve body B8, which is abutted, to be squeezed Slideway portion B91 is pressed, embedding part B92 is stable to be fixed on demarcation plate B5, and the lower end of B91 is provided with and demarcation plate B5 in slideway portion The primary sealing area B921 of abutting, wherein communication port B922 is opened on embedding part B92, so that liquid is only capable of passing through communication port B922 enters slideway portion B91, is provided in the lower end of sliding valve core B10 and is connected to embedding part B92 for sealing communication port B922 Secondary sealing area B101, and the water outlet B 911 being connected to rear runner B22 is offered on slideway portion B91 side wall；Current stream When hydraulic higher in road B21, liquid in preceding runner B21 by communication port B922 pushes sliding valve core B10 and from water outlet Enter in rear runner B22 in B911；In current runner B21 it is hydraulic the bottom of compared with when, sliding valve core B10 abuts embedding part B92, after blocking Liquid passes through in runner B22, realizes the purpose of control liquid one-way flowing.

As shown in Figure 3 and shown in Fig. 4, upper valve body B8 includes the mounting portion B81 being connected on pump case ontology B1 and extension It is set to the guide post B82 of fixed part lower end, mounting portion B81 includes being located at the outer hand-held part pump housing B and being threadedly connected to pump housing B On screwed ring B83, and in the periphery of screwed ring B83 and be connected to the lower end mounting portion B81 and be arranged with third sealing ring B14, turn Dynamic mounting portion B81, mounting portion B81, which stablize, abuts fixed lower valve body B9；Guide post B82 uses quadrangular shape, in sliding valve core B10 On offer guide groove B102 with guide post B82 cooperation, and be provided in guide post B82 for controlling motor A starting With the magnetic induction switch B84 of stopping, magnet B 104 is embedded in the upper end of sliding valve core B10, it is hydraulic larger in current runner B21 When push sliding valve core B10 move up, magnet B 104 it is close and make magnetic induction switch B84 be closed so that motor A is opened The rotation of dynamic impeller D, realizes the purpose of the automatic work of self priming pump；And it is stupefied that positioning is provided on guide post B82 B821, the length direction for positioning stupefied B821 along guide post B82 are extended, offer on sliding valve core B10 stupefied with positioning B821 mating locating slot B103, and then the cooperation position between guide post B82 and guide groove B102 is limited, and then guarantee Magnet B 104 is capable of the opening and closing of stability contorting magnetic induction switch B84.

And the discharge port B105 being connected to locating slot B103 is offered in the lower end of sliding valve core B10, current runner B21 When middle liquid-driving sliding valve core B10, and then increase inserting depth of the guide post B82 in locating slot B103, guide post B82 Smaller with the gap of locating slot B103, the liquid in locating slot B103 is flowed out by discharge port B105, realizes sliding valve core B10's Stablize movement, and due to the magnetism of magnet B 104, and then is easy to appear build-up of limescale in locating slot B103, guide post B82 Push scale mobile to discharge port B105, liquid takes away scale, to avoid that build-up of limescale shadow occurs in locating slot B103 The moving distance of sliding valve core B10 is rung, guarantees that opening for control motor A is realized in cooperation between magnet B 104 and magnetic induction switch B84 Dynamic and stopping.

As shown in Figure 3 and shown in Fig. 4, the slideway portion upper end B91 in lower valve body B9 is extended with clamping ring B11, is clamped ring B11 Outside is connected on the inside of screwed ring B83, realizes that the upper valve body B8 abutting stable with lower valve body B9 is fixed；And outside embedding part B92 It is arranged with the first sealing ring B923, upper valve body B8 pushes lower valve body B9, so that primary sealing area B921 squeezes the first sealing ring B923 is connected on demarcation plate B5, and then improves the leakproofness of primary sealing area B921；Branch is additionally provided in slideway portion B91 Spring B 12 is supportted, the one end support spring B12 is sheathed on guide post B82, and the other end is connected to sliding valve core B10, so that slide-valve Core B10 it is stable be connected to embedding part B92, and be extended with fixed ring B107, fixed ring B107 in the lower end of sliding valve core B10 In be embedded with clump weight B108, by the way that the clump weight B108 of different weight is arranged, realize before controlling different hydraulic in runner B21 Liquid by water flow check valve B6, and the second sealing ring B106 is arranged with outside fixed ring B107, secondary sealing area B101 is squeezed It presses the second sealing ring B106 to be connected to embedding part B92, improves the leakproofness of secondary sealing area B101.

As shown in Figure 5 and Figure 6, the casing A1 of motor A is fixedly connected by connection cover ontology C with pump case ontology B1, is being connected Mechanical sealing chamber C1 and bearing chamber C2 is provided on lid ontology C, the shaft A2 in motor A sequentially passes through bearing chamber C2 and machinery Seal room C1 and with the impeller D coaxial cooperation in pump case ontology B1.

As shown in Figure 5 and Figure 6, towards one end of pump case ontology B1 and it is located at pressurization water outlet B 32 in connection cover ontology C Inlet opening C3 is offered, and offers apopore C4, inlet opening on connection cover ontology C and on mechanical sealing chamber C1 inner wall Connectivity slot C5 is provided between C3 and apopore C4, when impeller D rotation work, the hydraulic pressure at pressurization inlet opening C3 is lower than increasing Extrude the mouth of a river B32 place it is hydraulic so that in blade wheel chamber B3 part liquid by inlet opening C3 and apopore C4 enter machinery it is close It seals in the C1 of room, seal assembly C14 is provided in mechanical sealing chamber C1, between liquid and seal assembly C14 after heat exchange, and from It flows at pressurization water inlet B 31, continues seal assembly C14 in gap between mechanical sealing chamber C1 and seal assembly C14 In heat take away, the service life of lift-off seal component C14；And wherein inner wall connectivity slot C5 opposite with inlet opening C3 is set Guidance liquid is equipped with to the drainage face C51 flowed far from pump case ontology B1, liquid is flowed to from the C3 of inlet opening along drainage face C51 By impact seal assembly C14 stable after apopore C4, the stability that liquid cools down to seal assembly C14 is promoted.

As shown in Figure 5 and Figure 6, wherein being provided with high pressure catch basin C6 on connection cover ontology C and at the C3 of inlet opening, High pressure catch basin C6 increases the fluid flow at the C3 of inlet opening, and the flow velocity for having buffered liquid allow fluid to it is stable Entered in mechanical sealing chamber C1 by inlet opening C3, promotes the stability to cool down to seal assembly C14；And in connection cover ontology C Upper and be located at water inlet flow channel B2 and blade wheel chamber's B3 connectivity part is provided with low-pressure drainage slot C7, connection cover ontology C is upper and positioned at low pressure Partition panel C8 is formed between rhone C7 and high pressure catch basin C6, partition panel C8 increases liquid and directly flows from high pressure catch basin C6 The dynamic pressure into low-pressure drainage slot C7 so that liquid stabilising by mechanical sealing chamber C1, and low-pressure drainage slot C7 increases Fluid flow avoids also sending out in mechanical sealing chamber C1 so that liquid stabilization after heat exchange is flowed out from mechanical sealing chamber C1 Raw accumulation enables the liquid in high pressure catch basin C6 is stable to enter in mechanical sealing chamber C1, lasting to seal assembly C14 cools down；And connection cover ontology C towards offer on one end of pump case ontology B1 for be connected to low-pressure drainage slot C7 and The circulation groove C9 of high pressure catch basin C6, the liquid to exchange heat passes through to be mixed between circulation groove C9 and the liquid in blade wheel chamber B3, And high pressure catch basin C6 is flowed to again, improve the smoothness of liquid flowing.

As shown in Figure 5 and Figure 6, and on connection cover ontology C clamping groove C10 is offered towards one end of pump case ontology B1, It is formed with the third sealing surface C101 abutted with pump case ontology B1 on connection cover ontology C and at clamping groove C10, is further mentioned It has risen and has sealed stability between connection cover ontology C and pump case ontology B1；It and in connection cover ontology C further include being provided at circumferentially spaced The first joint angle C11, it is circumferential on pump case ontology B1 to be arranged at intervals with second joint angle B13 opposite with the first joint angle C11, the Locking bolt and lock nut are provided between one joint angle C11 and the second joint angle B13, locking bolt passes through the first joint angle C11 and the second joint angle B13 simultaneously cooperate lock nut to realize being fixedly connected between connection cover ontology C and pump case ontology B1, and Adjustment clearance C 12 is provided between opposite face between the first joint angle C11 and the second joint angle B13, so that connection cover sheet When fixing between body C and pump case ontology B1, third sealing surface C101 is preferentially abutted with pump case ontology B1, improves connection cover ontology Sealing stability between C and pump case ontology B1.

As shown in Figure 5 and Figure 6, buffering annular groove C21 is coaxially offered on the inner wall of the bearing chamber C2 of connection cover ontology C, It is embedded with elastic ring C22 in buffering annular groove C21, and the intermediate gap bearing chamber C2 is equipped with bearing C13, turned in motor A Axis A2 is coaxially plugged in bearing C13, and is abutted between bearing C13 and elastic ring C22；When motor A work, on shaft A2 Rotor is moved to optimum rotation center in motor A in the magnetic field of stator, so that the stress in shaft A2 off-axis direction, Shaft A2 pushes bearing C13 to side, squeezes between bearing C13 and elastic ring C22, elastic ring C22 has certain elasticity Deformation, and then realize the offset of shaft A2, avoid unilateral generation between bearing C13 and bearing chamber C2 inner wall from squeezing acceleration bearing The damage of C13, and then improve the service life of bearing C13 and motor A；And reduce the center shaft A2 and rotor in the stator Magnetic field center deviation, reduce the axis direction component size of shaft A2, and then reduce shaft A2 in the play of axis direction And the noise of the mechanical friction generated, further decrease noise pollution when self-priming pump work.

And seal assembly C14 includes the packer ring being sequentially coaxially sheathed on shaft A2 in mechanical sealing chamber C1 C141, wear ring C143 and lubrication ring C144, wear ring C143 uses stone using ceramics, lubrication ring C144 in this embodiment Ink, packer ring C141 are extended with abutment ring C142 along axis, and the one end wear ring C143 is embedded in abutment ring C142, abut The peripheral side ring C142 is connected on the inside of mechanical sealing chamber C1, and abutment ring C142 has certain elastic force, so that shaft A2 occurs When moving radially, abutment ring C142 can generate certain deformation, reduce axis and the magnetic field of rotor in the stator of shaft A2 Centre deviation promotes the rotational stability of shaft A2, reduces shaft A2 and rub in the play of axis direction and the machinery of generation The noise of wiping further decreases noise pollution when self-priming pump work；And wherein packer ring C141 uses nitrile rubber, fourth Fine rubber is heated to be reduced, and the liquid in blade wheel chamber B3 drives the heat in seal assembly C14, and then ensure that packer ring The stabilization of C141, and then ensure that the leakproofness and service life of seal assembly C14.

As shown in Figure 6 and Figure 7, wherein clearance fit between the impeller D and shaft A2 in pump case ontology B1, and in impeller D is upper to be circumferentially arranged at intervals with hydraulic balance hole D1, and hydraulic balance hole D1 is connected to the opposite sides of impeller D axial direction, and liquid passes through water Pressure balance hole D1 makes the hydraulic holding of impeller D opposite sides identical, when axial float occurs for shaft A2, impeller D and shaft The support force of clearance fit and the two sides impeller D liquid between A2, reduces the play amplitude of the axis direction of impeller D, in turn It avoids and collides and rub between impeller D and connection cover ontology C and pump case ontology B1, reduce due to being touched when impeller D work Hit and rub generate noise and realize protection impeller D purpose, reduce the noise pollution of self priming pump and improve from The physical life of sucking pump.

And the opposite sides of impeller D is provided with protector D2, protective plate D21 is made of stainless steel, and protector D2 includes being parallel to the protective plate D21 of impeller D and being coaxially arranged with shaft A2 to be embedded ring D22, the two sides impeller D protector D2 Be embedded ring D22 be embedded in mechanical sealing chamber C1 respectively and blade wheel chamber B3 in, protective plate D21 avoids impeller D and connection cover It is collided between ontology C and pump case ontology B1, and then tries the purpose of lower protection impeller D, and avoid connection cover ontology C and pump case ontology B1 be respectively facing the one end impeller D get rusty generation oxide influence impeller D rotation, promoted impeller D rotational stability.

As shown in Figure 6 and Figure 7, wherein the abutting end circumferential direction of shaft A2 and impeller D and it is equidistantly provided with cooperation plane A21, the two sides of impeller D axial direction are circumferential respectively to offer two D4 of one D3 of rhone and rhone at equal intervals, and one D3 of rhone it Between form one D31 of push plate, form two D41 of push plate between two D4 of rhone, replace and wait between one D31 of push plate and two D41 of push plate It being spaced apart in the two sides of impeller D, liquid flows in two D4 of one D3 of rhone and rhone, when impeller D rotation, push plate one D31 and two D41 of push plate pushes liquid flowing, promotes the flow velocity of liquid, and the alternate intervals of two D41 of one D31 of push plate and push plate The intensity for increasing the periphery impeller D is set, and then promotes the service life of impeller D.

As shown in Figure 8 and Figure 9, motor A can generate amount of heat in operation in casing A1, be arranged on motor A There is radiator structure A3, has been provided at circumferentially spaced cooling fin A11 in the periphery casing A1, radiator structure A3 includes being rotatably dispose in shaft It heat dissipation plate A4 on A2 and is provided at circumferentially spaced and drives heat dissipation plate A4 rotation, leaf in the blade A5 on heat dissipation plate A4, shaft A2 Piece A5 pushes air to flow to cooling fin A11, and the air of flowing takes away the heat on cooling fin A11, realizes the drop to motor A Temperature.

As shown in Figure 8 and Figure 9, wherein heat dissipation plate A4 includes cooperating the socket ring A41 of shaft A2 and edge to turn for being arranged The rotating disc A42 that axis A2 is radially extended, socket ring A41 extend along the length direction of shaft A2, and blade A5 is fixed on rotation in side On disk A42, and interconnecting piece A51 is provided between blade A5 and the outside socket ring A41, interconnecting piece A51 increases blade A5 and dissipates Bonding strength between backing A11, and then guarantee the promotion air flowing that blade A5 can be stable；And in socket ring A41 and turn Moving plate A42 has been provided at circumferentially spaced securing plate A43 towards between the one end motor A, increase socket ring A41 and rotating disc A42 it Between bonding strength, the physical life of heat radiation disk A4；And it is provided in socket ring A41 and the junction of rotating disc A42 First arcwall face A44, the outer edge of rotating disc A42 are provided with the second arcwall face A45 for guiding air to flow to motor A, When air is centrifuged movement, the first arcwall face A44 and the second arcwall face A45 reduce windage, reduce in air flow process The noise of generation, the noise pollution generated when reducing self-priming pump work.

As shown in Figure 8 and Figure 9, blade A5 bending setting forms the cancave cambered surface A52 for pushing air and guidance air flowing Convex globoidal A53, when heat dissipation plate A4 rotation when, cancave cambered surface A52 increase push air flowing area so that the flowing of air Amount increases, and convex globoidal A53 reduces to windage, thereby reduces and cuts making an uproar for generation in blade A5 rotation process between air Sound, the noise pollution generated when reducing self-priming pump work；And it is provided with cover on motor A to be buckled in outside heat dissipation plate A4 and blade A5 Week protective cover A6(as shown in connection with fig. 2), protective cover A6 around the shaft A2 be circumferentially provided with connecting plate A61 and with heat dissipation plate A4 phase Pair ventilating board A62, offer several air inlet hole A621 on ventilating board A62, protective cover A6 avoids heat dissipation plate A4 and blade A5 It is exposed to cause to accidentally injure operator, and the ventilating board A62 on protective cover A6 can guarantee conveying of the air to heat dissipation plate A4, into And guarantee to realize the stabilization cooling effect to motor A.

As shown in Figure 8 and Figure 9, wherein blade A5 far from one end of shaft A2 is extended with lengthened plate A54, and lengthened plate A54 Setting identical as blade A5 bending direction, lengthened plate A54 increase the area for pushing air flowing, improve rate of air circulation, in turn Promote the cooling efficiency to motor A, and the spacing phase between the length of lengthened plate A54 and ventilating board A62 and rotating disc A42 Together, it so that the air mass flow for the air mass flow and output being sent into ventilation is consistent, and then realizes stable to motor A progress Cooling, and the equivalent of air outputs and inputs and avoids generating biggish windage, and then reduces the noise that air flowing generates, and subtracts The noise pollution generated when small self-priming pump work.

The working principle of the present embodiment is:

When current runner B21 hydraulic meets or exceeds designated value, liquid-driving sliding valve core B10 is mobile, sliding valve core Magnet B 104 on B10 is closed close to magnetic induction switch B84, magnetic induction switch B84, so that the shaft A2 of motor A is rotated, and band Movable vane wheel D is rotated in blade wheel chamber B3, and liquid pushes flow rate of liquid quickening to go forward side by side from rear runner B22 into blade wheel chamber B3, impeller D Enter air-water separation chamber B4, realizes that the liquid lift in pump housing B increases.

This specific embodiment is only the explanation to the utility model, is not limitations of the present invention, ability Field technique personnel can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but As long as all by the protection of Patent Law in the scope of the claims of the utility model.

Claims (7)

1. a kind of connection cover structure, for connecting motor (A) and pump case ontology (B1), it is characterised in that: including connection cover ontology (C), it is provided with bearing chamber (C2) in the connection cover ontology (C), bearing chamber (C2) inner wall coaxially offers buffering annular groove (C21), it is embedded with elastic ring (C22) in the buffering annular groove (C21), bearing chamber (C2) intermediate gap is equipped with bearing (C13), the shaft (A2) Yu bearing (C13) coaxial cooperation of the motor (A) are arranged, the elastic ring (C22) and bearing (C13) Elasticity abuts.

2. a kind of connection cover structure according to claim 1, it is characterised in that: also set up in the connection cover ontology (C) Have mechanical sealing chamber (C1), is provided with seal assembly (C14) in the mechanical sealing chamber (C1), seal assembly (C14) packet Include the packer ring (C141) being sequentially coaxially sheathed on shaft (A2), wear ring (C143) and lubrication ring (C144), institute It states packer ring (C141) to be extended with abutment ring (C142) along axis, described wear ring (C143) one end is embedded at abutment ring (C142) in, abutment ring (C142) peripheral side is connected on the inside of mechanical sealing chamber (C1).

3. a kind of connection cover structure according to claim 2, it is characterised in that: the packer ring (C141) uses fourth Fine rubber, the connection cover ontology (C) close to pump case ontology (B1) one end and be located at blade wheel chamber (B3) and air-water separation chamber (B4) connectivity part offers inlet opening (C3), and opens on the connection cover ontology (C) and on mechanical sealing chamber (C1) inner wall Equipped with apopore (C4), the inlet opening (C3) is connected to setting with apopore (C4) and forms connectivity slot (C5).

4. a kind of connection cover structure according to claim 3, it is characterised in that: the connection cover ontology (C) is towards pump case One end of ontology (B1) and be located at inlet opening (C3) at be provided with high pressure catch basin (C6).

5. a kind of connection cover structure according to claim 4, it is characterised in that: the connection cover ontology (C) is towards pump case One end of ontology (B1) and be located at water inlet flow channel (B2) and blade wheel chamber (B3) connectivity part be provided with low-pressure drainage slot (C7), the company It connects on Gai Benti (C) and forms partition panel (C8) between low-pressure drainage slot (C7) and high pressure catch basin (C6).

6. a kind of connection cover structure according to claim 5, it is characterised in that: the connection cover ontology (C) is towards pump case The circulation groove (C9) for being connected to low-pressure drainage slot (C7) and High Pressure Drain slot is offered on one end of ontology (B1).

7. a kind of connection cover structure according to claim 3, it is characterised in that: the connectivity slot (C5) and inlet opening (C3) Opposite inner wall is provided with guidance water flow to the drainage face (C51) flowed far from pump case ontology (B1).