CN207212759U

CN207212759U - Fluid pump

Info

Publication number: CN207212759U
Application number: CN201720772058.7U
Authority: CN
Inventors: 不公告发明人
Original assignee: Hangzhou Sanhua Research Institute Co Ltd
Current assignee: Zhejiang Sanhua Intelligent Controls Co Ltd
Priority date: 2017-02-24
Filing date: 2017-06-29
Publication date: 2018-04-10
Anticipated expiration: 2027-06-29

Abstract

The utility model discloses a kind of fluid pump, including pump case, pump shaft and rotor part, pump case includes the first supporting part and the second supporting part, and rotor part includes upper cover plate, lower cover and blade, blade is formed between upper cover plate and lower cover, and lower cover is included towards the upside of upper cover plate；Pump inner chamber includes fluid cavity, and impeller forms fluid cavity with pump case；First supporting part includes opening and the first wall, opening connect with fluid inlet, and opening connects with fluid cavity；First wall is at least a portion wall portion to form opening, and the first wall is oppositely arranged with fluid inlet, and along the axially extending line direction of pump shaft, the distance between the first wall and fluid inlet are more than or equal to the distance between upside and fluid inlet of impeller lower cover.Above-mentioned technical proposal of the present utility model can make fluid from fluid inlet enter fluid cavity when, region that fluid can enter between adjacent blades between upper cover plate and lower cover freely, flow resistance is smaller.

Description

Fluid pump

Technical field

It the utility model is related to a kind of device for fluid conveying.

Background technology

Fluid pump typically all includes pump shaft, rotor part, fluid inlet and fluid issuing, and pump shaft is located under fluid inlet Side, in the course of work of fluid pump, rotor part is rotated, and fluid is sucked from fluid inlet, and the centrifugation through rotor part Power, the marginal position of pump is delivered to, and is exported from fluid issuing.Because pump shaft is pump shaft or pump shaft below fluid inlet The distance between fixed structure and fluid inlet it is shorter easily cause the fluid come in from fluid inlet flow resistance increase, influence The performance of pump.

Utility model content

The purpose of this utility model is to provide a kind of fluid resistance relatively small fluid pump.

To achieve the above object, adopt the following technical scheme that：

A kind of fluid pump, including pump case, pump shaft and rotor part, the pump case is formed with pump inner chamber, the rotor Part is arranged at the pump inner chamber, and the pump case includes fluid inlet and fluid issuing, and the pump case includes pump cover and pump Body, pump cover and the pump housing assembling are fixed, and the pump case includes the first supporting part and the second supporting part, one end of the pump shaft First supporting part is supported in, the other end of the pump shaft is supported in second supporting part；

The rotor part includes impeller, and the impeller includes upper cover plate, lower cover and blade, and the blade is positioned at described Between upper cover plate and the lower cover, the lower cover has a upside, and the upside is towards the upper cover plate；The pump inner chamber bag Fluid cavity is included, the fluid cavity is including at least the space between the impeller and the pump cover and positioned at the lower cover and institute State the region between the adjacent blades between upper cover plate；

First supporting part includes opening and the first wall, and the opening connects with the fluid inlet, the stream Through hole connects with the fluid cavity；First wall is at least a portion wall portion to form the opening, first wall with The fluid inlet is oppositely arranged, along the axially extending line direction of the pump shaft, first wall and the fluid inlet it Between distance be more than or equal to upside and the distance between described fluid inlet of the lower cover.

To achieve the above object, adopt the following technical scheme that：

The rotor part includes impeller, and the impeller includes upper cover plate, lower cover and blade, and the blade is positioned at described Between upper cover plate and the lower cover, the lower cover includes upside, and the upside is towards the upper cover plate；The pump inner chamber bag Fluid cavity is included, the fluid cavity is including at least the space between the impeller and the pump cover and positioned at the lower cover and institute State the region between the adjacent blades between upper cover plate；

First supporting part includes opening and the first wall, and the opening connects with the fluid inlet, the stream Through hole connects with the fluid cavity；First wall is at least a portion wall portion to form the opening, first wall with The fluid inlet is oppositely arranged, on the axially extending line direction along the pump shaft, the height of the upside of the lower cover Greater than or equal to the height of first wall.

Above-mentioned technical proposal of the present utility model fixes pump shaft, the first support by the first supporting part and the second supporting part The distance between first wall and fluid inlet in portion are more than or equal to the distance between upside and fluid inlet of lower cover, or On the axially extending line direction along the pump shaft, the height of the upside of the lower cover is greater than or equal to first wall Highly so that fluid from fluid inlet enter fluid cavity when, fluid can freely enter it is adjacent between upper cover plate and lower cover The region of blade, flow resistance are smaller.

Brief description of the drawings

Fig. 1 is a kind of diagrammatic cross-section of embodiment of fluid pump of the present utility model；

Fig. 2 is a kind of dimensional structure diagram of embodiment of pump cover；

Fig. 3 is the exploded perspective view of pump cover, pump shaft and a pad in Fig. 1；

Fig. 4 is the schematic top plan view of pump cover shown in Fig. 2；

Fig. 5 is the elevational schematic view of pump cover shown in Fig. 2；

Fig. 6 is the close-up schematic view of A in Fig. 1；

Fig. 7 is the partial section view of the utility model pump cover, and there is shown with upper cover plate and blade.

Embodiment

Reference picture 1~Fig. 5, Fig. 1 show a kind of diagrammatic cross-section of fluid pump, and fluid pump 100 includes pump case 1, pump shaft 2 And rotor part, for pump case 1 formed with pump inner chamber 11, rotor part is arranged at pump inner chamber 11.Pump inner chamber 11 includes fluid cavity 111, fluid cavity 111 is housed for fluid and the flowing space.

Pump case 1 includes pump cover 12 and the pump housing 13, and pump cover 12 and the assembling of the pump housing 13 are fixed.Pump case 1 includes fluid inlet 121 and fluid issuing 122, fluid inlet 121 and fluid issuing 122 be located at pump cover 12.Pump case 1 includes the He of the first supporting part 14 Second supporting part 15, the first supporting part 14 are arranged at pump cover 12, and the first supporting part 14 is wholely set with pump cover 12, the second supporting part 15 are arranged at the pump housing 13, and the second supporting part 15 is wholely set with the pump housing 13.The one end of pump shaft 2 is supported in the first supporting part 14, pump shaft 2 The other end be supported in the second supporting part 15.

Rotor part includes impeller 31, and impeller 31 includes upper cover plate 311, blade 312 and lower cover 313, and blade 312 is formed Between upper cover plate 311 and lower cover 313, wherein, at least part of blade can be wholely set with upper cover plate, at least portion of blade Dividing can be wholely set with lower cover, and impeller 31 includes the week side of boss outer rim 310.Fluid cavity 111 is comprised at least between impeller and pump cover 12 Space and adjacent blades between lower cover 313 and upper cover plate 311 between region, specifically, fluid cavity 111 to Few space included between upper cover plate 311 and pump cover 12, the adjacent blades between lower cover 313 and upper cover plate 311 Between region, the space between lower cover 313 and pump cover 12 and the sky between impeller the week side of boss outer rim 310 and pump cover 12 Between, certainly, fluid cavity 111 may also include the region between lower cover 313, the supporting part 14 of upper cover plate 311 and first.Specifically , lower cover 313 is included towards the upside 3131 of upper cover plate 311, and upper cover plate 311 is included towards the downside 3111 of lower cover 313, The region between adjacent blades between upside 3131 and downside 3111 is flow centrifugation moving region.Herein, refer to up and down Along the axially extending line direction of pump shaft, relatively close fluid inlet to be upper, be relatively distant under being of fluid inlet；Upper cover plate Refer to the cover plate of relatively close fluid inlet, lower cover refers to the cover plate of the relatively close pump housing, the upside of lower cover and upper cover plate Downside be oppositely arranged.

First supporting part 14 includes the wall 142 of opening 141 and first, and opening 141 connects with fluid inlet 121, circulation Hole 141 connects with fluid cavity 111, and the first wall 142 is at least a portion wall portion for forming opening 141, the first wall 142 and fluid Import 121 is oppositely arranged, big along the axially extending line direction of pump shaft 2, the distance between the first wall 142 and fluid inlet 121 In or equal to the distance between upside 3131 and fluid inlet 121, in other words, on the axially extending line direction along pump shaft, The height of the upside of lower cover 313 is greater than or equal to the height of the first wall 142.In this way, from the fluid that fluid inlet enters through stream After through hole 141, enter to become a mandarin into leaf area, and from the space between upper cover plate 311, the periphery of lower cover 313 and pump cover 12 Body exports, and is left from fluid issuing.Because the distance between the first wall 142 and fluid inlet 121 are more than or equal to upside The distance between 3131 and fluid inlet 121, so between fluid inlet and leaf area, fluid resistance is relatively small, right Flow hydraulic influences smaller.Herein, the distance between each several part and fluid inlet of the first wall 142 not etc. in the case of, The distance between the first wall and fluid inlet are defined as the minimum value in distance value.

Specifically, the first supporting part 14 includes multiple support columns 143 and fixed part 144, and one end of pump shaft 2 is supported in fixation Portion 144, the one end of support column 143 are wholely set with fixed part 144, and the other end of support column 143 is wholely set with pump cover 12, fixed part 144 include the first wall 142, a part of wall portion of the first wall 142 and the wall portion formation opening 141 of support column 143, in this way, stream Through hole is formed between support column 143 and fixed part 144, and support column 143, fixed part 144 and pump cover 12 are integrally formed, processing side Just, there is certain intensity by integrally formed each support column, ensures being fixedly secured for pump shaft.

Specifically, multiple support columns 143 are located at around fluid inlet 121, and support column 143 includes inwall 1431, inwall 1431 extend to fixed part 144 from the linear peripheral of fluid inlet 121, and inwall 1431 is a part of wall portion for forming opening 141； Support column 143 includes outer wall 1432, and outer wall 1432 extends to the end of fixed part 144 from adjacent fluid import 121；Support column 143 include the first chamfering wall 1433, and the first chamfering wall 1433 extends to outer wall 1432 from inwall 1431, and pump cover 12 includes outside portion 123 and inside portion 124, inside portion 124 include the first groove 1241 and the second groove 1242, the first groove 1241, the second groove 1242 are ring Shape groove, the first groove 1241 are located at the periphery of fluid inlet 121, and the second groove 1242 is adjacent with the first groove 1241, the first chamfering wall 1433 The second groove 1242 is extended to from the first groove 1241.In this way, the fluid entered from fluid inlet streamlined can enter leaf area, Fluid resistance is smaller.Herein, inside portion and outside portion are that the sidepiece of pump inner chamber is formed for pump inner chamber is inside portion.

More specifically, support column 143 is three, and formula triangular in shape is located at the periphery of fixed part 144, support column 143 Around fluid inlet 121, support column 143 includes the second chamfering wall 1434, and the second chamfering wall 1434 extends to from inwall 1431 Outer wall 1432, fixed part 144 include the second wall 145, and the second wall 145 is a part of wall portion towards pump shaft 2, and with the first wall 141 phases are back to setting, along the axially extending line direction of pump shaft 2, the distance between the second chamfering wall 1434 and fluid inlet 121 No more than the distance between the second wall 145 and fluid inlet 121.In this way, the second chamfering wall is provided with beneficial to fluid from import Ingress and egress out the region between lower cover 313, the supporting part 14 of upper cover plate 311 and first.

Reference picture 6, Fig. 7, impeller 31 include impeller inlet 314, impeller outlet 315 and impeller passage 316, impeller inlet 314 connect with fluid inlet 121, and one end of impeller passage 316 is impeller inlet 314, and the other end of impeller passage 316 is impeller Outlet 315, impeller 31 includes the week side of boss outer rim 310, and pump cover 12 includes internal ring wall 124, and internal ring wall 124 is located at the week side of boss outer rim 310 Outside, at least part of internal ring wall 124 are oppositely arranged with the week side of boss outer rim 310 of impeller 31, and internal ring wall 124 is to form fluid cavity 111 a part of wall portion；In the sustained height plane perpendicular to pump shaft 2, each section of the week side of boss outer rim 310 of impeller 31 with The distance between the relative internal ring wall 124 in the part is roughly equal；Herein, it is inside and outside to refer to centered on pump shaft, perpendicular to In the sustained height plane of pump shaft, the distance between one of position and pump shaft it is relative between another position and pump shaft away from From outside being.Fluid pump cited by present embodiment is low-capacity pump, and the diameter Ri scopes of fluid inlet 121 are 4~8mm, Impeller inlet 314 is slightly larger than fluid inlet 121, and impeller outlet width b scope is 0.8mm~1.5mm, and impeller outlet width is The distance of axial direction of the impeller outlet along the pump shaft.In this way, on the premise of fluid pump is low-capacity pump, for ease of stream The processing and manufacturing of body pump is more simple, and pump cover is designed as in the sustained height plane perpendicular to pump shaft, the week side of boss outer rim of impeller The distance between each section internal ring wall relative with the part it is roughly equal so that the radial load suffered by impeller reduces, The life-span of pump is improved, while asking for the pressure distribution inequality that the spiral pressurized water chamber used habitually in the past occurs at cut water can be alleviated Topic, reduces flow of fluid noise in pump.In addition, in the case of fluid inlet size is less, the setting of pump shaft supporting construction Just need to consider fluid inlet size and pump shaft size, prevent supporting construction is excessive from causing flow resistance too big, influence the property of pump Energy.

Specifically, upper cover plate 311 includes the first side wall 3115, and wherein the first side wall 3115 is located at the circumference of upper cover plate 311 Outer rim, lower cover 313 include second sidewall 3132, and wherein second sidewall 3132 is located at the circumferential outer rim of lower cover 313, internal ring wall 124 at least part is oppositely arranged with the first side wall 3115, and at least part of internal ring wall 124 is relative with second sidewall 3132 to be set Put；In the sustained height plane perpendicular to pump shaft 2, each section of the first side wall 3115 internal ring wall relative with the part The distance between 124 is roughly equal, the distance between each section of second sidewall 3132 internal ring wall 124 relative with the part It is roughly equal.

The flow Q scopes of fluid pump are 0<Q<1000L/h, between specific speed scope is 20~50, the diameter of internal ring wall 124 Scope is 30~35mm, in this way, fluid pump can meet the service behaviour demand of small size pump, moreover it is possible to make hydraulic loss smaller, Operating efficiency is higher.Herein, along the axial direction of pump shaft, in the case where the diameter of internal ring wall does not wait, internal ring wall it is straight Footpath is defined as the maximum gauge of internal ring wall.

Specifically, the diameter of impeller the week side of boss outer rim 310 and fluid inlet diameter ratio are in the range of 3.5~8.3.Herein In, along the axial direction of pump shaft 2, in the case where the diameter of impeller the week side of boss outer rim does not wait, the diameter of impeller the week side of boss outer rim is determined Justice is the maximum gauge of the week side of boss outer rim.The working flow of fluid pump cited by present embodiment is small, belongs to ultra-low specific speed pump, The small volume of fluid pump；For the fluid pump of small size, the diameter of impeller the week side of boss outer rim is than scope with fluid inlet diameter 3.5~8.3, the efficiency of pump of fluid pump can be made further to improve, meet the performance requirement of small size pump.

More specifically, the diameter Rc scopes of the internal ring wall 124 of pump cover 12 are 30~35mm, impeller the week side of boss outer rim 310 Diameter R scopes are 29~33mm, between the diameter Rc of internal ring wall 124 and the ratio range of fluid inlet diameter are 3.7~8.8.

Fluid pump cited by present embodiment is centrifugal pump, in the centrifugal pump course of work, during impeller 31 is with pump shaft 2 Mandrel rotates, and centrifugal pump includes runner 5, and runner is located at the inner roof wall 134 and pump cover 12 of the inner roof wall 125 of pump cover 12, the pump housing 13 Internal ring wall 124 between, a part for runner 5 is located between the week side of boss outer rim 310 of impeller 31 and the internal ring wall 124 of pump cover 12, The runner 5 is a part for fluid cavity, and impeller outlet 315 connects with runner 5, on the section by pump shaft axial direction, stream The cross-sectional area in road 5 is roughly equal, and the cross-sectional area scope of runner 5 is 8mm²~20mm².Herein, it is roughly equal be included in ± In the range of 10%.

Specifically, pump cover 12 includes inner roof wall 125, and the pump housing 13 includes inner roof wall 134, and the one of the inner roof wall 134 of the pump housing 13 Part contacts assembling with pump cover 12, defines distance of the runner 5 along pump shaft longitudinal direction as runner height, runner height h scopes are 6 ~8mm, a diameter of Second bobbin diameter of the internal ring wall 124 of pump cover 12 is defined, Second bobbin diameter Rc scopes are 30~35mm, define impeller A diameter of first diameter of the week side of boss outer rim 310, the first diameter R scopes are 29~33mm, Second bobbin diameter Rc and the first diameter R difference Value and runner height h ratio range are 0.25~1.2.In this way, the runner of fluid pump is relatively long and narrow, if ratio range is too small, Runner internal diameter is small, and depth is big, and flow resistance is relatively large, it is difficult to meets the job requirement of fluid pump；Flow channel shape more they tends to square Or the shape that circular or other draw ratios are more or less the same, help to reduce fluid loss, flow effect is preferable.

Herein, runner 5 can also be referred to as pumping chamber, and pumping chamber is the space between impeller outlet and fluid issuing.Its Main function is the liquid for collecting impeller outflow, a part of kinetic energy of current is changed into pressure energy, and direct water flow towards fluid Outlet.

Specifically, have along the axially in parallel direction of pump shaft 2, impeller the week side of boss outer rim 310 in the inner roof wall 125 of pump cover 12 Projected position, inner roof wall 125 include the wall portion 1251 to stretch out from the projected position, and the wall portion 1251 is to form runner 5 A part of wall portion, the wall portion 1251 are plane；And/or internal ring wall 124 is plane.Herein, in impeller the week side of boss outer rim 310 in pump In the case of projected position difference on the inner roof wall 125 of lid 12, projected position refers to the plane perpendicular to pump shaft axial direction On, with the pump shaft apart from farthest projected position.

Runner 5 is circular cylinder shape, and such fluid enters in the runner of circular cylinder shape from impeller outlet, and fluid exists Pressure distribution is relatively uniform in the runner of circular cylinder shape, and the radial pressure suffered by impeller is smaller, so as to reduce because of pump cover knot The influence of noise that structure is brought.

As other embodiment, the internal ring wall 124 of pump cover 12 is on-plane surface, for example, concave surface or curved surface, is now being hung down Directly in each elevation plane of pump shaft 2, each section of impeller the week side of boss outer rim 310 internal ring wall 124 relative with the part it Between distance almost it is equal, i.e., between each section of impeller the week side of boss outer rim 310 internal ring wall 124 relative with the part Distance can with it is equal can also be unequal.Certainly, the wall portion 1251 of inner roof wall 125 or on-plane surface, for example, concave surface or song Face.

More specifically, inner roof wall 125 includes the first flat part 1252, the first curved portions 1253 and cell wall portion 1254, the The first flat part of one curved portions 1253 connection 1252 and cell wall portion 1254；Impeller 31 includes upper cover plate 311, and upper cover plate 311 includes Opening portion 3112, the second curved portions 3113 and the second flat part 3114, the second curved portions 3113 connection He of the second flat part 3114 Opening portion 3112；Second flat part 3114 is oppositely arranged with the first flat part 1252, the second curved portions 3113 and the first curved portions 1253 are oppositely arranged, and opening portion 3112 is oppositely arranged with cell wall portion 1254；Pump cover 12 includes outside portion 123, the first flat part 1252 are oppositely arranged with outside portion 123, and outside portion 123 is planar portions.

Pump cover 12 sets fluid inlet 121 and fluid issuing 122, and more specifically, fluid issuing 122 is located at pump cover 12 Internal ring wall 124, and connected with runner 5, fluid issuing diameter range Do is 4~8mm, the diameter range R of impeller the week side of boss outer rim 310 For 29~33mm, the diameter of impeller the week side of boss outer rim 310 is with the diameter ratio of fluid issuing 122 in the range of 3.5~8.3.Fluid Import 121 is located at inner roof wall 125, and cell wall portion 1254 surrounds the fluid inlet 121.

The inner roof wall 125 of pump cover 12 includes the first flat part 1252, the first curved portions 1253 and cell wall portion 1254, the first arc First flat part 1252 of the connection of shape portion 1253 and cell wall portion 1254, upper cover plate 311 include opening portion 3112, curved portions 3113 and the Two flat parts 3114, the connection opening portion 3112 of curved portions 3113 and the second flat part 3114, the second flat part 3114 and first flat Straight portion 1252 is oppositely arranged, and the second curved portions 3113 are oppositely arranged with the first curved portions 1253, opening portion 3112 and cell wall portion 1254 are oppositely arranged；Opening portion 3112 is coaxially disposed with fluid inlet 121, and opening portion 3112 has intermediate openings, opening portion The internal diameter of 3112 opening is more than or equal to the diameter of fluid inlet 121.Pump cover 12 includes outside portion 123, the first flat part 1252 It is oppositely arranged with outside portion 123, outside portion 123 is planar portions.

Fixed part 144 sets the first fixing hole 1441, and the opening of the first fixing hole 1441 is fixed towards the second supporting part 15 Portion 144 includes the first bottom wall 1442, and the first bottom wall 1442 is forms a part of wall portion of the first fixing hole 1441, the second supporting part 15 include the second fixing hole 151, and the opening of the second fixing hole 151 includes second towards the first supporting part 14, the second supporting part 15 Bottom wall 152, for the second bottom wall 152 to form a part of wall portion of the second fixing hole 151, pump shaft 2 includes first end 24 and second End 25, first end 24 are located at the first fixing hole 1441, and the second end 25 is located at the second fixing hole 151, the first bottom wall 1442 The distance between second bottom wall 152 is less than the distance between the first wall 141 and the second bottom wall 152, first end 24 and second The distance between bottom wall 152 is less than the distance between the first wall 141 and the second bottom wall 152, due to 141 relative lower cover of the first wall 313 upside 3131 is in relative lower position, therefore the pump shaft being fixed in the first fixing hole and the second fixing hole is even more to be located at The lower position of leaf area, the length of such pump shaft is relatively short, in the case where meeting performance requirement, saves material, section Cost-saving.

Pump shaft 2 includes the first cut length 21, the cut length 23 of main paragraph 22 and second, the first cut length 21 and the second cut length 23 are divided into the both ends of main paragraph 22, and pump 100 includes pad 4, and pad 4 is located at the first cut length 21 and the second cut length 23, and first At least one pad is set between the supporting part 14 of cut length 21 and first, set between the second cut length 23 and the second supporting part 15 The distance between end of at least one pad, the end of the first supporting part 14 and the second supporting part 15 is more than the length of main paragraph 22 Degree and the summation of each thickness sum of pad 4.More specifically, the first supporting part 14 includes the first supporting walls 145, the first support Wall 145 is oppositely arranged with pad 4, and the first supporting walls 145 are located at the periphery of the first fixing hole 1441, and the second supporting part 15 includes the Two supporting walls 153, the second supporting walls 153 are oppositely arranged with pad 4, and the second supporting walls 153 are located at the second fixing hole 151 weeks Side, in other words, the distance between the first supporting walls 145 and the second supporting walls 153 are more than the length of main paragraph 22 and each pad 4 The summation of thickness sum.Can slightly it be moved vertically because pump is configured to pump shaft, therefore, in process, without to each Parts carry out especially critically handling the performance requirement that can meet pump, more conducively manufacture.

Specifically, the first fixing hole 1441 be shaped as it is non-circular, for example, D-shaped or other abnormity, first cut length 21 It is non-circular perpendicular to the section of pump shaft longitudinal direction, for example, D-shaped or other abnormity, the first cut length 21 is indulged perpendicular to pump shaft It is corresponding with the shape of the first fixing hole 1441 to the section in direction；Being shaped as second fixing hole 151 is non-circular, for example, D Shape or other abnormity, the second cut length 23 perpendicular to the section of pump shaft longitudinal direction to be non-circular, for example, D-shaped or other are different Shape, the second cut length 23 are corresponding with the shape of the second fixing hole 151 perpendicular to the section of pump shaft longitudinal direction；Pad 4 includes Through hole 41, being shaped as through hole 41 is non-circular, and for example, D-shaped or other abnormity, a part for the first cut length 21 passes through One pad 4, and the first fixing hole 1441 is stretched into, a part for the second cut length 23 passes through another pad 4, and it is solid to stretch into second Determine hole 151.More specifically, first end 24 is located at the first cut length 21, and the second end 25 is located at the second cut length 23, and first First end 24 in cut length 21 is located at the first fixing hole, and the second end 25 in the second cut length 23 is fixed positioned at second The section of hole, the first cut length and the second cut length is arranged to non-circular so that pump shaft 2 is being limited in the first supporting part and second It during supporting part, can not be rotated, ensure to realize the function of its fixing axle.

Reference picture 5, the outside portion 123 of pump cover 12 are provided with inlet tube 1231 and outlet 1232, inlet tube 1231 and stream Body inlet communication, outlet 1232 connect with fluid issuing, and the outside portion 123 of pump cover 2 is provided with boss 1233, boss 1233 Around inlet tube 1231.The outside portion 123 of pump cover 12 is provided with multiple reinforcements 1234 being radially arranged, and reinforcement 1234 is certainly The sidepiece of boss 1233 radially extends, and inlet tube 1231, outlet 1232, boss 1233 and reinforcement 1234 and pump cover 12 are all It is to be wholely set.The setting of reinforcement helps to strengthen the intensity of pump cover, prevents pump cover from being produced because fluid is flowed in pump inner high voltage Raw high impact forces and damage.

In addition, inlet tube 1231 and outlet 1232 include multiple fins 1235, fin 1235 is neighbouring to be arranged at inlet tube 1231st, at the mouth of pipe of outlet 1232, when inlet tube 1231 and outlet 1232 are connected with exterior line, it is not easy to come off, Connection is more firm.

In addition, the outside portion 123 of pump cover 12 is provided with multiple mounting holes 1236, multiple mounting holes 1236 are located at pump cover 12 Circumferencial direction, the sidepiece of the pump housing 13 are also equipped with multiple mounting holes, the mounting hole on pump cover and the position of mounting hole phase on the pump housing Adapt to, pump cover and the pump housing are fixed by bolt, screw or other assemblings.

Herein, in the case of being non-circular in pipe fitting, port etc., its described a diameter of equivalent diameter herein.

It should be noted that：Above example is merely to illustrate the utility model and not limited described by the utility model Technical scheme, such as isotropy defines to "front", "rear", "left", "right", " on ", " under ", although this specification reference The above embodiments have been carried out being described in detail to the utility model, still, it will be understood by those within the art that, Person of ordinary skill in the field still can be mutually combined to the utility model, be changed or equivalent substitution, and one The technical scheme for not departing from spirit and scope of the present utility model and its improvement are cut, all should cover will in right of the present utility model In the range of asking.

Claims

1. a kind of fluid pump, including pump case, pump shaft and rotor part, the pump case is formed with pump inner chamber, the rotor portions Part is arranged at the pump inner chamber, and the pump case includes fluid inlet and fluid issuing, and the pump case includes pump cover and the pump housing, Pump cover and the pump housing assembling is fixed, it is characterised in that：The pump case includes the first supporting part and the second supporting part, the pump One end of axle is supported in first supporting part, and the other end of the pump shaft is supported in second supporting part；

The rotor part includes impeller, and the impeller includes upper cover plate, lower cover and blade, and the blade is located at the upper lid Between plate and the lower cover, the lower cover has a upside, and the upside is towards the upper cover plate；The pump inner chamber includes stream Body cavity, the fluid cavity comprise at least space between the impeller and the pump cover and positioned at the lower cover with it is described on The region between adjacent blades between cover plate；

First supporting part includes opening and the first wall, and the opening connects with the fluid inlet, the opening Connected with the fluid cavity；First wall is at least a portion wall portion to form the opening, first wall with it is described Fluid inlet is oppositely arranged, along the axially extending line direction of the pump shaft, between first wall and the fluid inlet Distance is more than or equal to the distance between the upside of the lower cover and described fluid inlet.

2. fluid pump according to claim 1, it is characterised in that：The pump case includes pump cover and the pump housing, the pump cover Assembling and fix with the pump housing, first supporting part is arranged at the pump cover, and second supporting part is arranged at the pump housing, First supporting part is wholely set with the pump cover, and second supporting part is wholely set with the pump housing；

First supporting part includes multiple support columns and fixed part, and one end of the pump shaft is supported in the fixed part, described Support column one end is wholely set with the fixed part, and the support column other end is wholely set with the pump cover；The fixed part Including first wall, the wall portion of first wall and the support column forms a part of wall portion of the opening.

3. fluid pump according to claim 2, it is characterised in that：The first fixing hole of the fixed part setting, described first For the opening of fixing hole towards second supporting part, the fixed part includes the first bottom wall, and first bottom wall is described to be formed A part of wall portion of first fixing hole, second supporting part include the second fixing hole, the opening direction of second fixing hole First supporting part, second supporting part include the second bottom wall, and second bottom wall is to form second fixing hole A part of wall portion, the pump shaft include first end and the second end, and the first end is located at first fixing hole, described The second end is located at second fixing hole, and the distance between first bottom wall and second bottom wall are less than first wall The distance between described second bottom wall, the distance between the first end and second bottom wall be less than first wall with The distance between described second bottom wall.

4. fluid pump according to claim 2, it is characterised in that：The support column is located at around the fluid inlet, institute Stating support column includes inwall, and the inwall extends to the fixed part from the fluid inlet periphery, and the inwall is forms State a part of wall portion of opening；The support column includes outer wall, and the outer wall extends to institute from the neighbouring fluid inlet State the end of fixed part；The support column includes the first chamfering wall, and the first chamfering wall extends to described outer from the inwall Wall, the pump cover include outside portion and inside portion, and the inside portion includes the first groove and the second groove, first groove, the second groove For annular groove, first groove is located at the fluid inlet periphery, and second groove is adjacent with first groove, and described first falls Angle wall extends to second groove from first groove.

5. according to the fluid pump described in Claims 2 or 3 or 4, it is characterised in that：The support column is three, and triangular in shape Formula is located at the fixed part periphery, and the support column is located at around the fluid inlet, and the support column includes inwall, described interior Wall extends to the end of the fixed part from the fluid inlet periphery；The support column includes outer wall, and the outer wall is from neighbouring The end of the fixed part is extended at the fluid inlet；The support column includes the second chamfering wall, the second chamfering wall The outer wall is extended to from the inwall, the fixed part includes the second wall, and second wall is one towards the pump shaft Bulkhead portion, and with first wall mutually back to setting, along the axially extending line direction of the pump shaft, the second chamfering wall with The distance between described fluid inlet is not more than the distance between second wall and the fluid inlet.

6. according to fluid pump according to any one of claims 1 to 4, it is characterised in that：The impeller includes the week side of boss outer rim, institute Stating pump cover includes inside portion, and the inside portion includes internal ring wall, and the internal ring wall is located at the outside of the week side of boss outer rim of the impeller, At least part of the internal ring wall and the week side of boss outer rim of the impeller are oppositely arranged, and the internal ring wall is to form the fluid cavity A part of wall portion；In the sustained height plane perpendicular to the pump shaft, each section of the week side of boss outer rim and the part phase To the distance between internal ring wall it is roughly equal；The impeller includes impeller inlet and impeller outlet, the impeller inlet and institute Fluid inlet connection is stated, the fluid inlet diameter range is 4~8mm, and the opening inside diameter ranges are 4~8mm, and described Fluid inlet internal diameter is more than the diameter of the pump shaft, and the opening internal diameter is more than the diameter of the pump shaft.

7. fluid pump according to claim 6, it is characterised in that：The upper cover plate includes the first side wall, wherein the first side Wall is located at the circumferential outer rim of upper cover plate, and the lower cover includes second sidewall, and wherein second sidewall is located at the week of lower cover outwards Edge, at least part of the internal ring wall are oppositely arranged with the first side wall, at least part of the internal ring wall and described second Side wall is oppositely arranged；In the sustained height plane perpendicular to the pump shaft, each section of the first side wall and the part The distance between relative internal ring wall is roughly equal, between each section of the second sidewall internal ring wall relative with the part Distance it is roughly equal, the scope of the impeller outlet width is 0.8mm~1.5mm, and the impeller outlet width is the leaf Distance of the wheel outlet along the axial direction of the pump shaft.

8. fluid pump according to claim 6, it is characterised in that：The fluid pump includes runner, and the pump cover includes interior Roof, the pump housing include inner roof wall, and a part for the inner roof wall of the pump housing contacts assembling, the runner position with the pump cover Between the inner roof wall of inner roof wall, the pump housing and the internal ring wall of the pump cover in the pump cover, a part for the runner Between the week side of boss outer rim of the impeller and the internal ring wall of the pump cover, the runner be the fluid cavity a part, institute Impeller outlet and the flow passage are stated, on the section by the pump shaft axial direction, the cross-sectional area of the runner is big Cause equal, the cross-sectional area scope of the runner is 8mm²~20mm²。

9. fluid pump according to claim 7, it is characterised in that：The fluid pump includes runner, and the pump cover includes interior Roof, the pump housing include inner roof wall, and a part for the inner roof wall of the pump housing contacts assembling, the runner position with the pump cover Between the inner roof wall of inner roof wall, the pump housing and the internal ring wall of the pump cover in the pump cover, a part for the runner Between the week side of boss outer rim of the impeller and the internal ring wall of the pump cover, the runner be the fluid cavity a part, institute Impeller outlet and the flow passage are stated, on the section by the pump shaft axial direction, the cross-sectional area of the runner is big Cause equal, the cross-sectional area scope of the runner is 8mm²~20mm²。

10. fluid pump according to claim 6, it is characterised in that：The pump cover includes inner roof wall, and the pump housing includes interior Roof, a part for the inner roof wall of the pump housing contact assembling with the pump cover, and the fluid pump includes runner, the runner position Between the inner roof wall of inner roof wall, the pump housing and the internal ring wall of the pump cover in the pump cover, a part for the runner Between the week side of boss outer rim of the impeller and the internal ring wall of the pump cover, the runner is a part for the fluid cavity, fixed Distance of the justice runner along the pump shaft longitudinal direction is runner height, and the runner height is in the range of 6~8mm, definition A diameter of first diameter of the impeller the week side of boss outer rim, first diameter define the pump cover in the range of 29~33mm A diameter of Second bobbin diameter of internal ring wall, the Second bobbin diameter is in the range of 30~35mm, the Second bobbin diameter and described first straight The ratio range of the difference in footpath and the runner height is 0.25~1.2.

11. according to the fluid pump described in claim 7 or 8 or 9, it is characterised in that：The pump cover includes inner roof wall, the pump housing Including inner roof wall, a part for the inner roof wall of the pump housing contacts assembling with the pump cover, and the fluid pump includes runner, described Runner is located between the internal ring wall of the inner roof wall of the pump cover, the inner roof wall of the pump housing and the pump cover, the runner For a part between the week side of boss outer rim of the impeller and the internal ring wall of the pump cover, the runner is one of the fluid cavity Point, define distance of the runner along the pump shaft longitudinal direction as runner height, runner height in the range of 6~8mm, A diameter of first diameter of the impeller the week side of boss outer rim is defined, first diameter defines the pump in the range of 29~33mm A diameter of Second bobbin diameter of the internal ring wall of lid, the Second bobbin diameter is in the range of 30~35mm, the Second bobbin diameter and described the The ratio range of the difference of one diameter and the runner height is 0.25~1.2.

12. fluid pump according to claim 6, it is characterised in that：The impeller includes impeller passage, the impeller passage One end be the impeller inlet, the other end of the impeller passage is the impeller outlet, and the impeller inlet is more than described Fluid inlet, the range of flow of the fluid pump is 0~1000L/h, between specific speed scope is 20~50, the internal ring wall Diameter range is 30~35mm.

13. fluid pump according to claim 6, it is characterised in that：The diameter range of the internal ring wall is 30~35mm, institute State internal ring wall diameter and the fluid inlet diameter ratio range be 3.7~8.8 between, the diameter of the week side of boss outer rim with The fluid inlet diameter ratio is in the range of 3.5~8.3.

14. fluid pump according to claim 8, it is characterised in that：Along the axially in parallel direction of the pump shaft, the leaf The week side of boss outer rim of wheel has a projected position in the inner roof wall of the pump cover, the inner roof wall of the pump cover include from the projected position to The wall portion of outer extension, the wall portion are to form a part of wall portion of the runner, and the wall portion is plane；And/or the internal ring wall is Plane.

15. fluid pump according to claim 8, it is characterised in that：Along the axially in parallel direction of the pump shaft, the leaf Wheel the week side of boss outer rim has projected position in the inner roof wall of the pump cover, and the inner roof wall of the pump cover is including outside from the projected position The wall portion of extension, the wall portion are to form a part of wall portion of the runner, and the wall portion is concave surface or curved surface；And/or the inner ring Wall is concave surface or curved surface.

16. according to the fluid pump described in any one of Claims 1 to 4 or 7 or 8 or 9 or 10 or 12 or 13 or 14 or 15, it is special Sign is：The pump cover includes inner roof wall, and the inner roof wall of the pump cover includes the first flat part, the first curved portions and cell wall portion, First curved portions connect first flat part and the cell wall portion；The impeller includes upper cover plate, the upper cover plate bag The second flat part, the second curved portions and opening portion are included, second curved portions connect second flat part and the opening portion； Second flat part is oppositely arranged with first flat part, and second curved portions are relative with first curved portions to be set Put, the opening portion is oppositely arranged with the cell wall portion；The pump cover includes outside portion, first flat part and the outside Portion is oppositely arranged；The fluid issuing is located at the internal ring wall, and the fluid issuing diameter range is 4~8mm, the impeller The diameter range of the week side of boss outer rim is 29~33mm, and the diameter of the week side of boss outer rim of the impeller exists with the fluid issuing diameter ratio In the range of 3.5~8.3.

17. according to the fluid pump described in any one of Claims 1 to 4 or 7 or 8 or 9 or 10 or 12 or 13 or 14 or 15, it is special Sign is：

The pump shaft includes the first cut length, main paragraph and the second cut length, and first cut length and the second cut length set up separately In the main paragraph both ends, the fluid pump includes pad, and the pad is located at first cut length and the second cut length, institute State and at least one pad is set between the first cut length and first supporting part, second cut length and described second At least one pad is set between supporting part, between the end of first supporting part and the end of second supporting part Distance be more than the main paragraph length and each spacer thickness sum summation.

18. fluid pump according to claim 17, it is characterised in that：The fixed part sets the first fixing hole, and described the Being shaped as one fixing hole is non-circular, and first cut length is non-circular, institute perpendicular to the section of the pump shaft longitudinal direction It is corresponding with the shape of first fixing hole perpendicular to the section of the pump shaft longitudinal direction to state the first cut length；

Second supporting part includes the second fixing hole, and being shaped as second fixing hole is non-circular, second cut length It is non-circular perpendicular to the section of the pump shaft longitudinal direction, second cut length is cut perpendicular to the pump shaft longitudinal direction Face is corresponding with the shape of second fixing hole；

The pad includes through hole, and being shaped as the through hole is non-circular, and a part for first cut length passes through one Individual pad, and first fixing hole is stretched into, a part for second cut length passes through another pad, and stretches into described second Fixing hole.

19. fluid pump according to claim 1, it is characterised in that：The pump case includes pump cover and the pump housing, the pump cover Assembling and fix with the pump housing, first supporting part is arranged at the pump cover, and second supporting part is arranged at the pump housing, First supporting part is wholely set with the pump cover, and second supporting part is wholely set with the pump housing；

First supporting part includes multiple support columns and fixed part, and one end of the pump shaft is supported in the fixed part, described Support column one end is wholely set with the fixed part, and the support column other end is wholely set with the pump cover；The fixed part Including first wall, the wall portion of first wall and the support column forms a part of wall portion of the opening；

The fixed part sets the first fixing hole, and the opening of first fixing hole is towards second supporting part, the fixation Portion includes the first bottom wall, and first bottom wall is a part of wall portion to form first fixing hole, the second supporting part bag The second fixing hole is included, the opening of second fixing hole includes the second bottom towards first supporting part, second supporting part Wall, second bottom wall are a part of wall portion to form second fixing hole, and the pump shaft includes first end and the second end Portion, the first end are located at first fixing hole, and the second end is located at second fixing hole, first bottom wall The distance between described second bottom wall is less than the distance between first wall and second bottom wall, the first end with The distance between described second bottom wall is less than the distance between first wall and second bottom wall；

The support column is located at around the fluid inlet, and the support column includes inwall, and the inwall is from the fluid inlet Periphery extends to the fixed part, and the inwall is a part of wall portion to form the opening；The support column includes outer wall, The outer wall extends to the end of the fixed part from the neighbouring fluid inlet；The support column includes the first chamfering wall, The first chamfering wall extends to the outer wall from the inwall, and the pump cover includes outside portion and inside portion, the inside portion Including the first groove and the second groove, first groove, the second groove are annular groove, and first groove is located at the fluid inlet periphery, Second groove is adjacent with first groove, and the first chamfering wall extends to second groove from first groove；

The support column is three, and formula triangular in shape is located at the fixed part periphery, and the support column is located at the fluid and entered Around mouthful, the support column includes inwall, and the inwall extends to the end of the fixed part from the fluid inlet periphery；Institute Stating support column includes outer wall, and the outer wall extends to the end of the fixed part from the neighbouring fluid inlet；The support Post includes the second chamfering wall, and the second chamfering wall extends to the outer wall from the inwall, and the fixed part includes the second wall, Second wall is a part of wall portion towards the pump shaft, and with first wall mutually back to setting, along the pump shaft Axially extending line direction, the distance between the second chamfering wall and the fluid inlet are no more than second wall and the stream The distance between body import；

The impeller includes the week side of boss outer rim, and the pump cover includes inside portion, and the inside portion includes internal ring wall, the internal ring wall position In the outside of the week side of boss outer rim of the impeller, at least part of the internal ring wall and the week side of boss outer rim of the impeller are oppositely arranged, The internal ring wall is a part of wall portion to form the fluid cavity；It is described in the sustained height plane perpendicular to the pump shaft The distance between each section of the week side of boss outer rim internal ring wall relative with the part is roughly equal；The impeller includes impeller inlet And impeller outlet, the impeller inlet connect with the fluid inlet, the fluid inlet diameter range is 4~8mm, the stream Through hole inside diameter ranges are 4~8mm, and the fluid inlet internal diameter is more than the diameter of the pump shaft, and the opening internal diameter is more than The diameter of the pump shaft；

The upper cover plate includes the first side wall, and wherein the first side wall is located at the circumferential outer rim of upper cover plate, and the lower cover includes the Two side walls, wherein second sidewall are located at the circumferential outer rim of lower cover, at least part of the internal ring wall and the first side wall phase To setting, at least part of the internal ring wall is oppositely arranged with the second sidewall；In the sustained height perpendicular to the pump shaft In plane, the distance between each section of the first side wall internal ring wall relative with the part is roughly equal, and described second The distance between each section of the side wall internal ring wall relative with the part is roughly equal, and the scope of the impeller outlet width is 0.8mm~1.5mm, the impeller outlet width are the distance of axial direction of the impeller outlet along the pump shaft；

The fluid pump includes runner, and the pump cover includes inner roof wall, and the pump housing includes inner roof wall, the inner roof wall of the pump housing A part contact assembling with the pump cover, the runner be located at the inner roof wall of the pump cover, the inner roof wall of the pump housing and Between the internal ring wall of the pump cover, a part for the runner is located at the week side of boss outer rim of the impeller and the internal ring wall of the pump cover Between, the runner is a part for the fluid cavity, the impeller outlet and the flow passage, is passing through the pump shaft axle To on the section in direction, the cross-sectional area of the runner is roughly equal, and the cross-sectional area scope of the runner is 8mm²~20mm²；

The pump cover includes inner roof wall, and the pump housing includes inner roof wall, a part for the inner roof wall of the pump housing and the pump cover Contact assembling, the fluid pump include runner, the runner be located at the inner roof wall of the pump cover, the inner roof wall of the pump housing and Between the internal ring wall of the pump cover, a part for the runner is located at the week side of boss outer rim of the impeller and the internal ring wall of the pump cover Between, the runner is a part for the fluid cavity, and it is runner to define distance of the runner along the pump shaft longitudinal direction Highly, runner height is in the range of 6~8mm, defines a diameter of first diameter of the impeller the week side of boss outer rim, and described first Diameter defines a diameter of Second bobbin diameter of the internal ring wall of the pump cover in the range of 29~33mm, the Second bobbin diameter 30~ In the range of 35mm, the difference of the Second bobbin diameter and first diameter and the ratio range of the runner height for 0.25~ 1.2；

The impeller includes impeller passage, and one end of the impeller passage is the impeller inlet, the impeller passage it is another Hold and be more than the fluid inlet for the impeller outlet, the impeller inlet, the range of flow of the fluid pump is 0~1000L/ H, between specific speed scope is 20~50, the diameter range of the internal ring wall is 30~35mm；

The diameter range of the internal ring wall is 30~35mm, the diameter of the internal ring wall and the fluid inlet diameter ratio model Enclose between 3.7~8.8, the diameter of the week side of boss outer rim is with the fluid inlet diameter ratio in the range of 3.5~8.3；

The outside portion of the pump cover is provided with inlet tube and outlet, and the inlet tube connects with the fluid inlet, it is described go out Mouth pipe connects with the fluid issuing；The outside portion of the pump cover is provided with boss and the reinforcement being radially arranged, the boss Around the inlet tube, the sidepiece of the reinforcement from the boss radially extends, and the inlet tube and outlet wrap Include fin, the fin is neighbouring to be arranged at the mouth of pipe of the inlet tube, outlet, the inlet tube, outlet, boss and Reinforcement is wholely set with the pump cover；The outside portion of the pump cover is provided with multiple mounting holes, the multiple mounting hole site in The circumferencial direction of the pump cover.

20. a kind of fluid pump, including pump case, pump shaft and rotor part, the pump case is formed with pump inner chamber, the rotor portions Part is arranged at the pump inner chamber, and the pump case includes fluid inlet and fluid issuing, and the pump case includes pump cover and the pump housing, Pump cover and the pump housing assembling is fixed, it is characterised in that：The pump case includes the first supporting part and the second supporting part, the pump One end of axle is supported in first supporting part, and the other end of the pump shaft is supported in second supporting part；

The rotor part includes impeller, and the impeller includes upper cover plate, lower cover and blade, and the blade is located at the upper lid Between plate and the lower cover, the lower cover includes upside, and the upside is towards the upper cover plate；The pump inner chamber includes stream Body cavity, the fluid cavity comprise at least space between the impeller and the pump cover and positioned at the lower cover with it is described on The region between adjacent blades between cover plate；

First supporting part includes opening and the first wall, and the opening connects with the fluid inlet, the opening Connected with the fluid cavity；First wall is at least a portion wall portion to form the opening, first wall with it is described Fluid inlet is oppositely arranged, and on the axially extending line direction along the pump shaft, the height of the upside of the lower cover is higher than Or the height equal to first wall.