CN207761924U - Water pump - Google Patents

Abstract

The utility model proposes a kind of water pumps, including：The pump housing, and sound insulation pulsation damping device, are sheathed on outside the pump housing, and insulate against sound pulsation damping device inner hollow, including：It is respectively arranged on the water stream channel of two end faces of sound insulation pulsation damping device；At least one piece of flow-stopping plate is fixedly connected with the inner wall of sound insulation pulsation damping device, and the center line of flow-stopping plate and water stream channel is not parallel；Wherein, the internal partial wall of each flow-stopping plate and sound insulation pulsation damping device has gap, forms the vertical passage of flow.By the technical solution of the utility model, the noise that water pump vibrates and flow fluctuation is brought on the one hand is obstructed, and noise is further decreased by the pressure fluctuation of flow-stopping plate reduction flow；On the other hand so that the vibrational energy of water pump is gradually weakened and is absorbed by flow, reduce water pump and vibrate the influence generated to structure, extend the service life of water pump；So that the heat that pump working generates is taken away by flow, enhances the heat-sinking capability of water pump, improve the stability of pump working.

Description

Water pump

Technical field

The utility model is related to water-treatment technology fields, in particular to a kind of water pump.

Background technology

With the performance boost of big flux water treatment facilities, high rotating speed high powered water pump starts to be applied in water purifier, but It brings huge noise and vibration, causes serious noise pollution.Due to the design feature of water pump, when work, will produce prodigious Flow pulsation, initiation pressure pulsation, pressure fluctuation are transmitted to by water route on water treatment facilities, and structure acoustic radiation is induced；It is another Aspect, water pump self-operating also will produce acoustic radiation, through in cabinet radiation to ambient enviroment.The prior art is by increasing water pump The mode of shell and absorbent treatment inhibits water pump acoustic radiation, but it is severe to be easy to cause water pump dissipating-heat environment；For big flux water process High rotating speed high powered water pump, such case used by equipment are especially prominent, it is easy to which overheat causes water pump protectiveness to be shut down. Pressure fluctuation attenuating device is arranged using pump outlet in some prior arts, can only reduce part-structure vibration noise, Water pump body itself radiation is difficult to decrease.

Utility model content

The utility model aims to solve at least one of technical problems existing in the prior art or related technologies.

In view of this, the utility model provides a kind of water pump, hollow sound insulation pulsation decaying dress is provided with outside water pump It sets, flow is allow to pass through from the device, to take away the heat of water pump, also act as sound insulation and noise reducing and flow fluctuation of decaying Effect.

To achieve the goals above, the technical solution of the utility model provides a kind of water pump, including：The pump housing, and every Sound pulsation damping device, is sheathed on outside the pump housing, and insulate against sound pulsation damping device inner hollow, including：Sound insulation pulsation is respectively arranged on to decline Subtract the water stream channel of two end faces of device；At least one piece of flow-stopping plate is fixedly connected, baffle with the inner wall of sound insulation pulsation damping device The center line of plate and water stream channel is not parallel；Wherein, the internal partial wall of each flow-stopping plate and sound insulation pulsation damping device has gap, Form the vertical passage of flow.

By the sound insulation pulsation damping device being set in outside the pump housing, the vibration of the pump housing is on the one hand tentatively obstructed, has been reduced The pump housing vibrates the influence to surrounding structure, has on the other hand obstructed the conduction of the noise of pump housing generation so that the pump housing will not be with pump Other structures around body and device resonance, to reduce the vibration generated when pump housing operation to other structures around and device It influences, reduces the sound pollution around the pump housing.Insulate against sound pulsation damping device inner hollow, and both ends are equipped with water stream channel, make water The flow of pump is flowed through from sound insulation pulsation damping device, is on the one hand increased the gross mass of sound insulation pulsation damping device, is improved Sound insulation and noise reducing effect expands the cross-sectional area of water stream channel on the other hand for only by water pipe as water stream channel, Reduce the impact that flow fluctuation is brought；And it since sound insulation pulsation damping device is set in outside the pump housing, is produced when the pump housing being made to work Raw heat is absorbed and is taken away by flow, improves the heat-sinking capability of the pump housing, and then improves the stability of pump housing work.

The flow-stopping plate being fixedly connected with inner wall is also provided in sound insulation pulsation damping device, and flow-stopping plate and flow are logical The center line in road is not parallel, makes flow when entering sound insulation pulsation damping device, is changed direction by the blocking of flow-stopping plate, from And the impact that pump body structure is subject to can be reduced with the pressure fluctuation of continuous decrement flow, reduce noise.Each flow-stopping plate with every The internal partial wall of sound pulsation damping device has gap, forms the vertical passage of flow, and flow can be made from sound insulation pulsation decaying One end flows into, other end outflow, to persistently take away the heat of pump housing generation.

Optionally, if the quantity of flow-stopping plate be it is multiple, the pump housing radially, two vertical passages of arbitrary neighborhood every Projection on the end face of sound pulsation damping device not exclusively overlaps, so that each vertical passage mutual dislocation, to persistently weaken The pressure fluctuation of flow.

Optionally, if the quantity of flow-stopping plate be it is multiple, in the circumferential direction of the pump housing, two vertical passages of arbitrary neighborhood every Projection on the end face of sound pulsation damping device not exclusively overlaps.

Optionally, if the quantity of flow-stopping plate is multiple, the pump housing radially and circumferentially on, two longitudinal directions of arbitrary neighborhood are logical Projection of the road on the end face of sound insulation pulsation damping device not exclusively overlaps.

Optionally, flow-stopping plate is the porous plate equipped with multiple holes, on the one hand increases longitudinal circulation passage area of flow, Accelerate water velocity to improve heat dissipation effect, on the other hand also mitigates the flow fluctuation impact that single flow-stopping plate is subject to.

Optionally, the aperture in multiple holes on each flow-stopping plate is different.

Optionally, the quantity in hole is different at least two adjacent flow-stopping plates.

Optionally, the distribution mode in multiple holes is different at least two adjacent flow-stopping plates.

Optionally, insulate against sound pulsation damping device at least partly inner wall and flow-stopping plate use damping material.

Optionally, sound insulation pulsation damping device uses heat-absorbing material, to improve heat-sinking capability.

Optionally, the one side of flow-stopping plate towards water stream channel is plane or curved surface.

Optionally, flow-stopping plate is parallel with the cross section of the pump housing.

The additional aspect and advantage of the utility model will become apparent in following description section, or new by this practicality The practice of type is recognized.

Description of the drawings

Fig. 1 shows the inside stereoscopic schematic diagram of the sound insulation pulsation damping device of embodiment 1 according to the present utility model；

Fig. 2 shows the stereoscopic schematic diagrams of the water pump of embodiment 1 according to the present utility model；

Fig. 3 shows the perspective view of the sound insulation pulsation damping device of embodiment 1 according to the present utility model；

After Fig. 4 shows that the sound insulation pulsation damping device of embodiment 1 according to the present utility model removes an end plates Stereoscopic schematic diagram；

After Fig. 5 shows that the sound insulation pulsation damping device of embodiment 1 according to the present utility model removes one piece of flow-stopping plate Stereoscopic schematic diagram；

After Fig. 6 shows that the sound insulation pulsation damping device of embodiment 1 according to the present utility model removes two pieces of flow-stopping plates Stereoscopic schematic diagram；

Fig. 7 shows that the sound insulation pulsation damping device of embodiment 1 according to the present utility model is cutd open along pump housing centerline direction Part isometric schematic diagram after opening；

Fig. 8 shows the sound insulation pulsation damping device of embodiment 1 according to the present utility model along water inlet pipe centerline direction Part isometric schematic diagram after splitting；

Fig. 9 shows that the solid of the part enclosure of the sound insulation pulsation damping device of embodiment 1 according to the present utility model is shown It is intended to；

Figure 10 shows the shell front view of the sound insulation pulsation damping device of embodiment 1 according to the present utility model；

Figure 11 shows the water inlet pipe solid signal of the sound insulation pulsation damping device of embodiment 1 according to the present utility model Figure；

Figure 12 shows the sound insulation pulsation damping device of embodiment 1 according to the present utility model without the solid before water inlet pipe Schematic diagram；

Figure 13 shows the sound insulation pulsation damping device of embodiment 1 according to the present utility model without the main view before water inlet pipe Figure；

Figure 14 shows that the solid after the sound insulation pulsation damping device installation water pipe of embodiment 1 according to the present utility model is shown It is intended to；

Figure 15 shows the main view after the sound insulation pulsation damping device installation water pipe of embodiment 1 according to the present utility model Figure；

Figure 16 shows the inside stereoscopic schematic diagram of the sound insulation pulsation damping device of embodiment 2 according to the present utility model；

Figure 17 shows the inside stereoscopic schematic diagrams of the sound insulation pulsation damping device of embodiment 3 according to the present utility model；

Figure 18 shows the arrangement schematic diagram in hole on the porous flow-stopping plate of embodiment 4 according to the present utility model；

Figure 19 shows the arrangement schematic diagram in hole on the porous flow-stopping plate of embodiment 5 according to the present utility model；

Figure 20 shows the arrangement schematic diagram in hole on the porous flow-stopping plate of embodiment 6 according to the present utility model；

Figure 21 shows the vertical view of the flow-stopping plate setting angle of embodiment 7 according to the present utility model；

Figure 22 shows the side view of the flow-stopping plate setting angle of embodiment 7 according to the present utility model；

Figure 23 shows the vertical view of the flow-stopping plate setting angle of embodiment 8 according to the present utility model；

Figure 24 shows the A of Figure 23 according to the present utility model to diagrammatic cross-section.

Wherein, the correspondence in Fig. 1 to Figure 24 between reference numeral and component names is：

10 pump housings, 20 sound insulation pulsation damping devices, 200 water inlet pipes, 202 outlet pipes, 204 flow-stopping plates, 206 inner casings, outside 208 Shell, 210 vertical passages, 212 holes.

Specific implementation mode

In order to be more clearly understood that the above objects, features, and advantages of the utility model, below in conjunction with the accompanying drawings and have The utility model is further described in detail in body embodiment.It should be noted that in the absence of conflict, this Shen The feature in embodiment and embodiment please can be combined with each other.

Many details are elaborated in the following description in order to fully understand the utility model, still, this practicality Novel to be implemented different from other modes described here using other, therefore, the scope of protection of the utility model is simultaneously It is not limited by following public specific embodiment.

Some embodiments according to the present utility model are described referring to Fig. 1 to Figure 24.

Embodiment 1

As shown in Fig. 1 to Figure 15, according to the utility model proposes one embodiment water pump, including：The pump housing 10, and Sound insulation pulsation damping device 20 is sheathed on such as Fig. 2 outside the pump housing 10, and insulate against sound 20 inner hollow of pulsation damping device, including：It is formed The inner casing 206 and shell 208 of sound insulation 20 internal cavities of pulsation damping device and two end faces.As Fig. 9 and Figure 10 and Figure 12, Shown in Figure 14, Figure 15, wherein inner casing 206, shell 208 and 10 same center line of the pump housing, and be arranged successively along the radial direction of the pump housing 10, Inner casing 206 be arranged between the pump housing 10 and shell 208, two end faces along 10 centerline direction of the pump housing be arranged, and in the pump housing 10 Heart line is vertical.It is also each equipped with water inlet and the water outlet as water stream channel in two end faces of sound insulation pulsation damping device 20 Mouthful, water inlet is connected with water inlet pipe as shown in figure 11.As shown in Figure 1 to Figure 3, wherein in the center line of water inlet and the pump housing 10 Heart line is parallel.As shown in Fig. 1 and Figure 13, it is equipped with the uniform flow-stopping plate 204 in 3 block gaps in sound insulation pulsation damping device 20, with The inner wall of sound insulation pulsation damping device 20 is fixedly connected, specifically, flow-stopping plate 204 can be fixedly connected with inner casing 206, also may be used To be fixedly connected with shell 208, or be both fixedly connected, need to determine according to the convenience of production or installation.It needs It wants it is emphasized that flow-stopping plate 204 can there are many set-up modes, but any one set-up mode all must be logical with flow The center line in road, i.e. water inlet is not parallel, to realize the blocking to flow.Further, in this embodiment flow-stopping plate 204 Set-up mode is to be arranged in parallel with the cross section of the pump housing 10, or perhaps be arranged with the central axis of water inlet.

As shown in Fig. 1 and Fig. 4 to Fig. 8, between the internal partial wall of each flow-stopping plate 204 and the pulsation damping device 20 that insulates against sound has Gap forms the vertical passage 210 of flow, so that flow is smoothly flowed in and out from sound insulation pulsation damping device 20, further Ground, as shown in Figure 1, the present embodiment is in the circumferential direction of the pump housing 10, the vertical passage 210 on the flow-stopping plate 204 of arbitrary neighborhood every Projection on the end face of sound pulsation damping device 20 not exclusively overlaps, i.e., two longitudinal directions on the flow-stopping plate 204 of arbitrary neighborhood are logical Road 210 mutually shifts to install in the circumferential, to weaken the fluctuation pressure of flow.

As shown in Figure 1, when flow flows into sound insulation pulsation damping device 20 from water inlet, by first piece of flow-stopping plate 204 Stop and changes direction, first vertical passage 210 in 1 left side of flow graph, after first vertical passage 210 flows out, by The blocking of second piece of flow-stopping plate 204, alters course again, second vertical passage 210 on 1 right side of flow graph, in third block flow-stopping plate Under the action of 204, again deflecting, finally on the right side of Fig. 1 outlet pipe 202 outflow sound insulation pulsation damping device 20.

As shown in Figure 7 and Figure 8, by the way that 3 pieces of flow-stopping plates 204 are arranged, and the vertical passage 210 on flow-stopping plate 204 is misplaced Water route is divided into tortuous reflux by setting, and flow is made substantially to be weakened by the multiple blocking and changed course of 3 pieces of flow-stopping plates 204 The pressure fluctuation of flow reduces noise caused by the structural vibration and vibration of hydraulic pressure fluctuations induction；And flow is repeatedly Stopped and is altered course, the vibrational energy that vibration generates when also absorbing the pump housing 10 work itself, to also reduce the pump housing 10 The influence brought to surrounding structure is vibrated, the noise that the vibration of the pump housing 10 generates is reduced.

Only with 3 pieces of flow-stopping plates 204 in the present embodiment, in order to illustrate the course of work of sound insulation pulsation damping device 20, 3 pieces of flow-stopping plates 204 are not limited in practical application, can according to the axial dimension of the pump housing 10, the ripple frequency of flow, intensity, And the material of flow-stopping plate 204 itself, intensity, size etc. characteristic, the flexible particular number for determining flow-stopping plate 204, and Its size of space.

Further, flowing in sound insulation pulsation damping device 20 of the flow outside the pump housing 10, can also persistently take away pump The heat that body 10 generates when working improves the stability that the pump housing 10 works.In order to keep the heat that the pump housing 10 generates better It is transmitted in the water in sound insulation pulsation damping device 20, the inner casing 206 of the sound insulation pulsation damping device 20 of the present embodiment, which uses, leads The excellent metal material of hot property, will pass through the contact of inner casing 206 and the pump housing 10, the heat transfer that the pump housing 10 is generated is to stream Dynamic flow is 10 continued down of the pump housing to take away heat.

For the ease of producing and installing, as shown in Figures 4 to 6,3 pieces of flow-stopping plates 204 of the present embodiment are set as and the pump housing 10 cross section is parallel, i.e. the central axis with water inlet pipe 200, thus when flow enters sound insulation pulsation damping device 20, The impact that flow fluctuation is brought is born by flow-stopping plate 204 completely, to the intensity of flow-stopping plate 204 and absorb the requirement of impact energy compared with Height, in the present embodiment, will be increased in face of the first of water inlet pipe 200 piece of flow-stopping plate 204 thickness and and inner casing 206, shell 208 together When be fixedly connected, to improve its strength and stiffness, reduce the possibility impacted for a long time and failed by the pressure fluctuation of flow, extend Its service life；On the other hand it is also additionally arranged damping layer on one side towards water inlet pipe 200 in first piece of flow-stopping plate 204, so as to this When in face of water impact, damping layer deforms flow-stopping plate 204 with the impact of flow, to absorb the part impact of flow Energy mitigates the vibration that hydraulic pressure fluctuations are brought, and reduces noise, pressure fluctuation is made gradually to decay.Wherein, damping material is preferred Using rubber type of material, to utilize the excellent elasticity of rubber and cheap processing cost.

Similarly, water inlet pipe 200 and outlet pipe 202 can also use damping material, to absorb the energy of hydraulic pressure fluctuations, So that it is decayed.

Further, for reduce monolithic flow-stopping plate 204 by excessive impact force cause flow-stopping plate 204 fail can Can, the present embodiment also sets flow-stopping plate 204 to curved surface towards water inlet pipe 200, reduces flow-stopping plate 204 and be subject to just on one side Face is impacted, and after so that water impact flow-stopping plate 204 is stopped, reduces first piece of flow-stopping plate 204 by caused by water impact Vibration, and noise is reduced, the service life of flow-stopping plate 204 is extended, to the vibration that the pulsation that eases off the pressure is brought, reduction is made an uproar Sound.

Since the flow fluctuation that the position of first block of 204 face water inlet pipe 200 of flow-stopping plate is subject to impacts maximum, in the position Thickness could be provided as it is thicker compared with the thickness of other positions on same flow-stopping plate 204, to improve its intensity.

As shown in Fig. 2 and Fig. 4, the pump housing 10, and sound insulation pulsation decaying dress are coated by the pulsation damping device 20 that insulates against sound It sets and also has flow in 20, make sound insulation pulsation damping device 20 play the role of obstructing the noise that the vibration of the pump housing 10 is brought, also make water Stream has taken away the heat of the generation of the pump housing 10, and to further increase both effects, the present embodiment also uses sound absorption to shell 208 The material of heat preservation coats, such as mineral wool, rubber tube etc., has preferably obstructed the vibration of the pump housing 10 and hydraulic pressure fluctuations generate The heat that the pump housing 10 generates also is limited in the flow in sound insulation pulsation damping device 20, and then is taken away by flow by noise, subtracts The possibility that the heat of the generation of the pump housing 10 is distributed by the pulsation damping device 20 that insulates against sound to surrounding structure, component or facility is lacked, has carried The stability of high 10 surrounding structure of the pump housing, component or facility staff, after also heat being made to be taken away by flow, it is possible to obtain secondary It utilizes, to energy saving, environmental protection.

Embodiment 2

On the basis of embodiment 1, a kind of vertical passage 210 of flow-stopping plate 204 is present embodiments provided in 10 diameter of the pump housing The mode being distributed upwards.

As shown in figure 16, the vertical passage 210 of first piece of flow-stopping plate 204 of the present embodiment is in the flow-stopping plate 204 and shell Between 208；And make first piece of gear closer to water inlet compared with the vertical passage 210 in first piece of flow-stopping plate 204 of embodiment 1 The stress of flowing plate 204 evenly, and flow can faster pass through first vertical passage 210, reduce first piece of flow-stopping plate 204 impacts being subject to, extend its service life.The vertical passage 210 of second piece of flow-stopping plate 204 is in the flow-stopping plate 204 and inner casing Between 206；The vertical passage 210 of third block flow-stopping plate 204 is then between the flow-stopping plate 204 and shell 208.

Technical solution through this embodiment, the pump housing 10 radially, two vertical passages 210 of arbitrary neighborhood are insulating against sound Projection on the end face of pulsation damping device 20 not exclusively overlaps, and realizes the purpose of 210 mutual dislocation of vertical passage setting, from And persistently weaken the fluctuation pressure of flow.

In view of the pump housing 10 in the radial direction, the space insulated against sound in pulsation damping device 20 is smaller, therefore can be Multiple vertical passages 210 are set on same flow-stopping plate 204, to improve flow area, reduce the impact that flow-stopping plate 204 is subject to Power extends its service life.

Embodiment 3

Embodiment 1 and embodiment 2 are combined, in the present embodiment, the vertical passage 210 on 3 pieces of flow-stopping plates 204 is in circumferential direction Radially misplace arrangement simultaneously, that is, realize the pump housing 10 radially and circumferentially on, two vertical passages 210 of arbitrary neighborhood every The purpose that projection on the end face of sound pulsation damping device 20 not exclusively overlaps.

Specifically, as shown in figure 17, the present embodiment only exists the setting of vertical passage 210 on second piece of flow-stopping plate 204 On the position of shell 208 partially of 204 middle part of the flow-stopping plate, you can realize vertical passage 210 on 3 pieces of flow-stopping plates 204 radial and Shifting to install in circumferential direction, and leaned on due to 210 position of vertical passage on second piece of flow-stopping plate 204, shorten flow The length of circulation circuit carries to make have more water to flow through the pump housing 10 in the same time in the pulsation damping device 20 that insulates against sound The high heat-sinking capability of flow.

Embodiment 4

Flow-stopping plate 204 in the present embodiment is porous plate, i.e. flow-stopping plate 204 is equipped with multiple holes 212.As shown in figure 18, Using porous plate as flow-stopping plate 204, flow area, the impact appropriate for mitigating flow-stopping plate 204 and being subject to can be increased, and pass through The variation in aperture on flow-stopping plate 204, hole count, hole position, to realize flow dislocation by each flow-stopping plate 204, make flow changed course from And realize the purpose of decaying hydraulic pressure fluctuations.

Specifically, have 3 holes 212 respectively on first piece of flow-stopping plate 204 of the present embodiment 1, from the left sides Figure 18 to right side, The aperture in 3 holes 212 becomes smaller successively；The aperture in 3 holes 212 on second piece of flow-stopping plate 204 then also becomes smaller successively, but each Hole 212 of the aperture in hole 212 all compared with the corresponding position on previous piece of flow-stopping plate 204 is small, and class is done on third block flow-stopping plate 204 Like setting.In this way, flow, when passing sequentially through 3 pieces of flow-stopping plates 204,212 quantity of hole on plate is although unchanged, but aperture is gradually contracted It is small, keep aisle spare smaller and smaller, to also function to the effect of decaying hydraulic pressure fluctuations, and due to there are multiple holes 212 to exist On flow-stopping plate 204, the impact that flow-stopping plate 204 is subject to is reduced.

Embodiment 5

3 pieces of flow-stopping plates 204 in the present embodiment remain as porous plate, and the quantity in the hole 212 on palette is different, aperture phase Together.

In view of there is a polylith flow-stopping plate 204, thus can by the pressure fluctuation of flow by polylith flow-stopping plate 204 in batches Decaying step by step, in this way, the impact that first piece of flow-stopping plate 204 is subject to can be mitigated, and water is uniformly born by each piece of flow-stopping plate 204 The impact force of stream extends the service life of each flow-stopping plate 204.

Such as Figure 19, it is provided with 8 through-holes 212 on first piece of flow-stopping plate 204, is uniformly distributed, on second piece of flow-stopping plate 204 4 through-holes 212 are provided with, are uniformly distributed, 2 through-holes 212 are provided on third block flow-stopping plate 204, so set, making implementing The impact force born completely by first piece of flow-stopping plate 204 in example 1 is shared together by subsequent flow-stopping plate 204, to extend The service life of first piece of flow-stopping plate 204, and since it is small by impact force, generated noise is also relatively small.

Embodiment 6

In the present embodiment, 212 quantity of hole on each piece of flow-stopping plate 204, aperture are identical, but distribution mode is different, or Person says pitch-row difference, to realize shifting to install for hole 212 on each piece of flow-stopping plate 204.

As shown in figure 20,4 holes, the 212 hole position dispersion on first piece of flow-stopping plate 204, and it is in same circumference；Second piece 4 holes 212 on flow-stopping plate 204 are gathered at one；In 4 holes 212 on third block flow-stopping plate 204,2 dispersions, 2 poly- Collection, and misplace with the hole 212 on second block of plate.

Technical solution through this embodiment can be reached and be imitated with the same technique by water route segmentation changed course of embodiment 1 Fruit, but it is the increase in flow area, and by way of dispersing water flow channel, make 204 uniform force of flow-stopping plate, to extend gear The service life of flowing plate 204.

Embodiment 7

Flow-stopping plate 204 in the present embodiment is same as Example 1, but not parallel with the cross section of the pump housing 10, but At an angle.

Specifically, being pressed by 200 flow of water inlet pipe to reduce piece flow-stopping plate of flow-stopping plate 204, especially first 204 First piece of flow-stopping plate 204, can be tilted a certain angle by power pulsation frontal impact, as shown in Figure 21 and 22, first piece of flow-stopping plate The radial parallel setting of 204 holdings and the pump housing 10, the i.e. outer wall perpendicular to inner casing 206, but first piece of flow-stopping plate 204 and the pump housing 10 centerline direction at an angle, preferably 45 °, in this way, when water inlet pipe 200 flow under the action of pressure fluctuation to When first piece of flow-stopping plate 204 impacts, under the action of 45 ° of inclined-planes, only some impact force is held by first piece of flow-stopping plate 204 By, and another part impact force then alter course sound insulation pulsation damping device 20 inner wall impact, to alleviate first piece of flow-stopping plate 204 pressure reduces first piece of flow-stopping plate 204 and is vibrated by caused by water impact, and reduces noise, extends baffle The service life of plate 204.

Alternatively, it is also possible to which first piece of flow-stopping plate 204 is set as vertical with the holding of the center line of the pump housing 10, such as Figure 23 and 24 It is shown, but at an angle with the radial direction of the pump housing 10, preferably 45 °, to make one of impact force of 200 flow of water inlet pipe Divide the inner casing 206 or shell 208 for turning to sound insulation pulsation damping device 20, reduces the impact that first piece of flow-stopping plate 204 is subject to Power extends its service life.

The technical solution of the utility model is described in detail above in association with attached drawing, by the technical solution of the utility model, On the one hand the noise that the vibration of barrier water pump and flow fluctuation are brought, and reduced by the flow-stopping plate in the pulsation damping device that insulates against sound The pressure fluctuation of flow further decreases noise；On the other hand make the vibrational energy of water pump by flow in sound insulation pulsation damping device Gradually reduction reduces water pump and vibrates the influence generated to structure, extends the service life of water pump；Also pump working is made to generate Heat taken away by flow, enhance the heat-sinking capability of water pump, improve the stability of pump working.

In the present invention, term " first ", " second ", " third " are only used for the purpose of description, and should not be understood as Instruction implies relative importance；Term " multiple " then refers to two or more, unless otherwise restricted clearly.Term " peace The terms such as dress ", " connected ", " connection ", " fixation " shall be understood in a broad sense, for example, " connection " may be a fixed connection, it can also It is to be detachably connected, or be integrally connected；" connected " can be directly connected, can also be indirectly connected through an intermediary.It is right For those skilled in the art, it can understand that above-mentioned term in the present invention specific contains as the case may be Justice.

In the description of the utility model, it is to be understood that the fingers such as term "upper", "lower", "left", "right", "front", "rear" The orientation or positional relationship shown be based on the orientation or positional relationship shown in the drawings, be merely for convenience of description the utility model and Simplify description, specific direction must be had, with specific azimuth configuration by not indicating or implying the indicated device or unit And operation, it is thus impossible to be construed as a limitation of the present invention.

In the description of this specification, the description of term " one embodiment ", " some embodiments ", " specific embodiment " etc. Mean that particular features, structures, materials, or characteristics described in conjunction with this embodiment or example are contained at least the one of the utility model In a embodiment or example.In the present specification, schematic expression of the above terms are not necessarily referring to identical embodiment Or example.Moreover, the particular features, structures, materials, or characteristics of description can be in any one or more embodiments or example In can be combined in any suitable manner.

The preferred embodiment that these are only the utility model, is not intended to limit the utility model, for this field Technical staff for, various modifications and changes may be made to the present invention.Within the spirit and principle of the utility model, Any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.

Claims (12)

1. a kind of water pump, which is characterized in that including：

The pump housing, and

Insulate against sound pulsation damping device, is sheathed on outside the pump housing, the sound insulation pulsation damping device inner hollow, including：

It is respectively arranged on the water stream channel of two end faces of the sound insulation pulsation damping device；

At least one piece of flow-stopping plate is fixedly connected, the flow-stopping plate and the flow with the inner wall of the sound insulation pulsation damping device The center line in channel is not parallel；

Wherein, the internal partial wall of each flow-stopping plate and the sound insulation pulsation damping device has gap, forms the longitudinal direction of flow Channel.

2. water pump according to claim 1, which is characterized in that if the quantity of the flow-stopping plate is multiple, in the pump Radially, projection of two vertical passages of arbitrary neighborhood on the end face of the sound insulation pulsation damping device is incomplete for body It overlaps.

3. water pump according to claim 1, which is characterized in that if the quantity of the flow-stopping plate is multiple, in the pump In the circumferential direction of body, projection of two vertical passages of arbitrary neighborhood on the end face of the sound insulation pulsation damping device is incomplete It overlaps.

4. water pump according to claim 1, which is characterized in that if the quantity of the flow-stopping plate is multiple, in the pump Body radially and circumferentially on, two vertical passages of arbitrary neighborhood it is described sound insulation pulsation damping device end face on projection Not exclusively overlap.

5. water pump according to claim 1, which is characterized in that the flow-stopping plate is the porous plate equipped with multiple holes.

6. water pump according to claim 5, which is characterized in that the aperture in multiple holes on each flow-stopping plate is different.

7. water pump according to claim 5, which is characterized in that the number in the hole on at least two adjacent flow-stopping plates Amount is different.

8. water pump according to claim 5, which is characterized in that the multiple hole on at least two adjacent flow-stopping plates Distribution mode it is different.

9. water pump according to claim 1, which is characterized in that it is described sound insulation pulsation damping device at least partly inner wall and The flow-stopping plate uses damping material.

10. water pump according to claim 1, which is characterized in that the sound insulation pulsation damping device uses heat-absorbing material.

11. water pump according to claim 1, which is characterized in that the one side of the flow-stopping plate towards the water stream channel is Plane or curved surface.

12. water pump according to claim 1, which is characterized in that the flow-stopping plate is parallel with the cross section of the pump housing.