CN108019340B - Upper cover and pumping for pumping - Google Patents

Abstract

The invention discloses a kind of upper covers and pumping for pumping.Upper lid is equipped with outlet duct, and upper cover is used to cover the air bag closed in pumping, and air bag has the air cavity towards upper cover gab, and upper lid is equipped with the pressurization protrusion being adapted to project into air cavity.Upper cover according to the present invention, pressurization protrusion can cooperate the compression of air cavity after reasonable moulding to reduce the residue gas scale of construction, increase pressure at expulsion, and this supercharging mode is simple and reasonable for structure, and cost is relatively low for upper cover.

Description

Upper cover and pumping for pumping

Technical field

The present invention relates to pump housing equipment technical fields, more particularly, to a kind of upper cover and pumping for pumping.

Background technique

In exhaust, all more or less there are still airtight bad, air-flow has noise, air pressure are less than normal to ask for general pumping Topic.Diaphragm pump disclosed in the prior art, function, structure are more mature, if to increase pressure at expulsion, structural modification is big, Higher cost.

Summary of the invention

The application is intended to provide a kind of upper cover for pumping, which is conducive to increase pumping pressure at expulsion, and structure It changes small, at low cost.

It is another object of the present invention to provide a kind of pumpings with above-mentioned upper cover.

Upper cover according to the present invention for pumping, the upper lid are equipped with outlet duct, and the upper cover is closed for covering On the air bag of pumping, the air bag has the air cavity towards the upper cover gab, and the upper lid is described equipped with being adapted to project into Pressurization protrusion in air cavity.

Upper cover according to an embodiment of the present invention for pumping, the air cavity of air bag is adapted to project by being arranged on upper lid In pressurization protrusion, pressurization protrusion can cooperate the compression of air cavity after reasonable moulding with reduce the residue gas scale of construction, increase exhaust pressure Power, this supercharging mode is simple and reasonable for structure, and cost is relatively low for upper cover.

Specifically, on the direction towards the outlet duct, the bottom of the pressurization protrusion and the bottom table of the upper cover The distance between face gradually increases.

In some embodiments, the internal perisporium in the outlet duct be equipped with outgassing groove, the outgassing groove be suitable for it is described Air cavity connection.

Specifically, the bottom surface of the pressurization protrusion is equipped with the first guide channel for extending to the outgassing groove.

More specifically, the side of the axis towards the outlet duct of the pressurization protrusion is equipped with the second guide channel, The both ends of second guide channel are connected with first guide channel and the outgassing groove respectively.

Further, guiding muscle is equipped in the outgassing groove.

Pumping according to the present invention, the pumping includes motor, offset assembly, air bag and upper cover, and the air bag includes base Attic base, the utricule and valve block for being located at the pedestal disk two sides are limited in the utricule and are passed through towards the side of the pedestal disk Pass to the air cavity to form opening, the valve block is arranged adjacent to the opening, and the upper cover lid closes on the pedestal disk, it is described on It covers and is equipped with outlet duct, the motor is connected with the offset assembly, and the offset assembly is connected with the utricule, described The offset assembly alternately squeezes and stretches the utricule when motor operating, and the upper cover is according to the above-mentioned implementation of the present invention Upper cover described in example for pumping, the valve block are extend into the outlet duct, the valve block and the outlet duct Internal perisporium constitutes the exhaust valve of the pumping, and when the utricule is stretched, the valve block is fitted in the inner circumferential in the outlet duct To block the air cavity on wall, when the utricule is extruded, the gas intracavity gas can wash the valve block open to circulate, described Upper lid is equipped with the pressurization protrusion extending into the air cavity.

Pumping according to an embodiment of the present invention, it is convex by the pressurization being arranged in the air cavity that can extend into air bag on upper lid It rises, pressurization protrusion can cooperate the compression of air cavity after reasonable moulding to increase pressure at expulsion, and this supercharging mode structure is simple, closes Reason, cost is relatively low for upper cover.

In some embodiments, on the direction far from the pressurization protrusion, the outlet duct includes at least two cross The hole section that sectional area is sequentially reduced, the part between the two neighboring hole section of the pressurization protrusion recently constitute water conservancy diversion Step, the distance between the water conservancy diversion step and the valve block are 0.3mm~3mm.

Specifically, reinforcing rib is connected between the valve block and the pedestal disk.

In some embodiments, the air bag is equipped with multiple utricules, and multiple utricules are around the pedestal disk Center line spaced relation, the air bag further include: the tube wall of the valve pipe being located on the pedestal disk, the valve pipe is equipped with The fracture of the direction perforation of multiple separate utricules, each fracture penetrates through on the thickness direction of the tube wall, described Part between the two neighboring fracture of valve pipe forms the valve block.

Specifically, one end cross-sectional area towards the air bag in the outlet duct increases to form flaring, the valve Pipe covers the flaring.

Additional aspect and advantage of the invention will be set forth in part in the description, and will partially become from the following description Obviously, or practice through the invention is recognized.

Detailed description of the invention

Above-mentioned and/or additional aspect of the invention and advantage will become from the description of the embodiment in conjunction with the following figures Obviously and it is readily appreciated that, in which:

Fig. 1 is the cross-sectional view of upper cover according to an embodiment of the invention；

Fig. 2 is the overlooking structure figure of piston component according to an embodiment of the invention；

Fig. 3 is in Fig. 2 along A-A sectional view；

Fig. 4 be one embodiment of the invention pumping when a certain utricule of air bag stretches schematic diagram；

Fig. 5 is the schematic diagram when a certain utricule of air bag squeezes of pumping shown in Fig. 4；

Fig. 6 be another embodiment of the present invention pumping when a certain utricule of air bag stretches schematic diagram.

Appended drawing reference:

Pumping 100,

Piston component 1,

Air bag 11, pedestal disk 111, utricule 112, air cavity 1120, first through hole 1121, opening 1122, casing 113, valve pipe 114, valve block 1141, fracture 1142, reinforcing rib 115,

Connecting bracket 12, snout cavity 1210, the second through-hole 1211, telophragma 122, terminal pad 123, connects connection stabilizer blade 121 Connect hole 1231, convex block 124, connection rib 125,

Upper cover 2, outlet duct 21, hole section 211, water conservancy diversion step 212, flaring 213, outgassing groove 214, guiding muscle 215, pressurization Raised 22, first guide channel 221, the second guide channel 222, the first fastener 23, upper cover 2 bottom surface S,

Motor 3, motor shaft 31, pedestal 4, the second fastener 41, offset assembly 5, eccentric wheel 51, inclined shaft 52,

Air bag seat 6, matching hole 61, limiting slot 62.

Specific embodiment

The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.

The upper cover 2 according to an embodiment of the present invention for pumping is described below with reference to Fig. 1-Fig. 6.

Upper cover 2 according to an embodiment of the present invention for pumping, as shown in Figure 1, upper cover 2 is equipped with outlet duct 21, such as Shown in Fig. 4, upper cover 2 is used to cover the air bag 11 closed in pumping 100, and air bag 11 has the air cavity 1120 being open towards upper cover 2, on Lid 2 is equipped with the pressurization protrusion 22 being adapted to project into air cavity 1120.

Here it is appreciated that the effect of pressurization protrusion 22, it is necessary first to understand the structure and work of the air bag 11 cooperated with upper cover 2 Make principle.

First illustrate the working principle of air bag 11 by taking the structure of air bag 11 in the example of Fig. 2 and Fig. 3 as an example below.Air bag 11 wraps Include: pedestal disk 111, utricule 112 and casing 113, pedestal disk 111 and casing 113 are respectively provided at the opposite sides of utricule 112, capsule Air cavity 1120 is being penetrated through towards the side of pedestal disk 111 to form opening 1122 in body 112, and the bottom wall of air cavity 1120, which is equipped with, to be connected The first through hole 1121 of logical casing 113.

As shown in Figure 4 and Figure 5, air bag 11 and mobilizable connecting bracket 12 constitute piston component 1 in pumping 100.Connection Bracket 12 is equipped with connection stabilizer blade 121, and connection stabilizer blade 121 is equipped with the second through-hole 1211, and connection stabilizer blade 121 extend into casing In 113.When connecting stabilizer blade 121 towards when the movement of the direction of air bag 11, connection stabilizer blade 121 can extrude utricule 112；When connection stabilizer blade When 121 directions for being directed away from air bag 11 move, connection stabilizer blade 121 can pass through the frictional force between casing 113 and pull casing 113, thus stretchable utricule 112.

It is understood that the utricule 112 of air bag 11 is flexible piece, such as utricule 112 can be made of rubber or plastics, Therefore volume size that is deformable and changing air cavity 1120 when air bag 11 is extruded.When pumping 100 works, dynamical element is driven Connecting bracket 12 moves back and forth, and connection stabilizer blade 121 alternately squeezes and stretch utricule 112 in connecting bracket 12, thus alternately Ground changes the volume size of the air cavity 1120 in utricule 112.When stretching utricule 112,1120 volume of air cavity, which becomes larger to complete to suck, to be moved Make；When squeezing utricule 112,1120 volume of air cavity, which becomes smaller, completes exhaust event.Therefore connecting bracket 12 reciprocating motion, it can be achieved that The utricule 112 of air bag 11 back and forth carries out sucking gas and the purpose that gas is discharged, so as to continuously drive gas court It is flowed to specific direction.

I.e. in the example, by the way that first through hole 1121 is arranged on 1120 bottom wall of air cavity, connects and be arranged second on stabilizer blade 121 Through-hole 1211 is alternately connected and phase in the activity of connecting bracket 12 between second through-hole 1211 and first through hole 1121 It is staggered.When the second through-hole 1211 is connected with first through hole 1121, the second through-hole 1211 can be by first through hole 1121 to gas 1120 air inlet of chamber；When the second through-hole 1211 is staggered with first through hole 1121, connection stabilizer blade 121 blocks first through hole 1121. It is dual-purpose by the way that stabilizer blade 121 1 will be connected in connecting bracket 12, it can not only compressed gas, moreover it is possible to control air inlet, reduce pumping 100 number of parts, reduces costs.And intake valve is arranged in connecting bracket 12, the structure of upper cover 2 can also be simplified, Reduce difficulty of processing.

It will be seen that by the course of work of above-mentioned air bag 11, the utricule 112 in exhaust of air bag 11 is squeezed towards upper cover 2.? In the embodiment of the present invention, pressurization protrusion 22 may be configured to the consistent shape of 112 direction of extrusion of utricule, such air bag 11 is by direction When the direction of upper cover 2 squeezes, air cavity 1120 can be made when compressed by the extruding of pressurization protrusion 22, reduce residual in air cavity 1120 Gas flow, play increase pressure at expulsion effect.

Upper cover 2 according to an embodiment of the present invention for pumping is adapted to project into air bag 11 by being arranged in upper cover 2 Pressurization protrusion 22 in air cavity 1120, pressurization protrusion 22 can cooperate the compression of air cavity 1120 to reduce residue gas after reasonable moulding The scale of construction increases pressure at expulsion, and this supercharging mode is simple and reasonable for structure, and cost is relatively low for upper cover 2.

Specifically, as shown in Figure 1, on the direction towards outlet duct 21, the bottom of pressurization protrusion 22 and the bottom of upper cover 2 The distance between surface S is gradually increased.That is, on the direction towards outlet duct 21, the height h of pressurization protrusion 22 by It is cumulative big.

It is appreciated that being vented after gas compression towards outlet duct 21 in air cavity 1120, therefore pressurization protrusion 22 is designed At towards the shape gradually increased on the direction in outlet duct 21, can make pressure at expulsion on the direction towards outlet duct 21 by It is cumulative to add.For the maximum pressure point formed after pressurization adjacent to outlet duct 21, being conducive to pressurized gas can be directly from venthole It is discharged at road 21.In addition, setting also can avoid the extruding that pressurization protrusion 22 interferes utricule 112 in this way.

In some embodiments, as shown in Figure 1, the internal perisporium in outlet duct 21 is equipped with outgassing groove 214, outgassing groove 214 Suitable for being connected to air cavity 1120, outgassing groove 214 penetrates through downwards upper cover 2 in Fig. 1.Here the setting of outgassing groove 214 is for cooperating Valve block 1141 is vented on air bag 11 to control, and the setting of outgassing groove 214 simplifies 2 air outlet structure of upper cover more, rationally, can guide Gas is arranged from outgassing groove 214 to outlet duct 21 in air bag 11.

Specifically, as shown in Figure 1, the bottom surface of pressurization protrusion 22 is equipped with the first guide channel for extending to outgassing groove 214 221.When the utricule 112 of air bag 11 in this way is extruded and is pressurized towards the direction in outlet duct 21, the air-flow of pressurization can be from first Guide channel 221 directs into outgassing groove 214, therefore the first guide channel 221 keeps exhaust more smooth.

More specifically, as shown in Figure 1, the side of the axis towards outlet duct 21 of pressurization protrusion 22 is led equipped with second Approaching channel 222, the both ends of the second guide channel 222 are connected with the first guide channel 221 and outgassing groove 214 respectively.In this way, the capsule of air bag 11 When body 112 is extruded and is pressurized towards the direction in outlet duct 21, the air-flow of pressurization can be successively from the first guide channel 221, second Then 222 row of guide channel is oriented to outlet duct 21 from outgassing groove 214 to outgassing groove 214.Therefore the setting of the second guide channel 222 The smooth exhaust of upper cover 2 can further be made.

Further, as shown in Figure 1, being equipped with guiding muscle 215 in outgassing groove 214.On the one hand the setting for guiding muscle 215 can rise To the effect of support valve block 1141, on the other hand enable the air-flow of outgassing groove 214 along guiding 215 row of muscle to outlet duct 21.

In addition, can be arranged wider by outgassing groove 214, corresponding 1141 meeting of valve block to guarantee capacity in some pumpings More wider than outgassing groove 214, wide outgassing groove 214 makes valve block 1141 be easy to fall into outgassing groove 214 and cannot seal gas Slot 214.Therefore the setting guiding muscle 215 in outgassing groove 214, can prevent from falling into valve block 1141 because outgassing groove 214 is wide Deformation causes to pump airtight bad problem.

Specifically, guiding muscle 215 extends along gas outflow direction, as shown in Figure 1, guiding the extending direction of muscle 215 and going out The parallel setting of the central axis in stomata road 21.

In some embodiments, as shown in Figure 1, outlet duct 21 includes at least on the direction far from pressurization protrusion 22 The hole section 211 that two cross-sectional areas are sequentially reduced, distance are pressurized the part structure between the nearest two neighboring hole section 211 of protrusion 22 At water conservancy diversion step 212.Here, the cross-sectional area of hole section 211 refers on the section perpendicular to the central axis of the hole section 211 Area.

In this way, the cross-sectional area in outlet duct 21 is sequentially reduced in air-flow discharge direction, can gradually, smoothly increase The ejection flow velocity of air-flow.And the cross-sectional area in outlet duct 21 ensure that air-flow increases towards at least reducing in discharge direction The stability of speed, while can also play good guide functions.

And water conservancy diversion step 212 is set in the outlet duct 21 of upper cover 2, it can prevent reflux gas from directly impacting pumping 100 exhaust valve, avoiding reflux gas from washing the valve block 1141 of exhaust open leads to gas leakage.Here, 100 row is pumped The structure of air valve and its valve block 1141 will be described in detail in the explanation below about 100 structures of pumping, and details are not described herein again.

Upper cover 2 according to the above embodiment of the present invention, it is simple and reasonable, pressure at expulsion and exhaust flow rate can be improved, together When be vented it is steady, smooth.

Pumping 100 according to an embodiment of the present invention is described below with reference to Fig. 1-Fig. 6.

It is according to an embodiment of the present invention pumping 100, as shown in Figure 4 and Figure 5, pumping 100 include motor 3, offset assembly 5, Air bag 11 and upper cover 2, upper cover 2 are the upper cover 2 for pumping according to the above embodiment of the present invention.

In some embodiments, upper cover 2, support base, air bag 11, air bag in Fig. 4 and Fig. 5 and Fig. 3, in pumping 100 Seat 6, connecting bracket 12, offset assembly 5, pedestal 4 and motor 3 are set gradually from top to bottom.

Wherein, pedestal 4 is located on the end face of motor 3, and motor shaft 31 passes through the bottom wall of pedestal 4 and extend into pedestal 4.Partially Heart component 5 is located in pedestal 4, and offset assembly 5 includes eccentric wheel 51 and the inclined shaft 52 being located on eccentric wheel 51, eccentric wheel 51 and electricity Arbor 31 is connected, and the tie point of inclined shaft 52 and eccentric wheel 51 deviates the center of rotation axis of eccentric wheel 51.Wherein, far from eccentric On the direction of wheel 51, the center of rotation axis inclination that inclined shaft 52 is increasingly towards eccentric wheel 51 extends.Here, such as Fig. 4 and Fig. 5 institute Show, inclined shaft 52 and eccentric wheel 51 may respectively be separately machined part；As also shown in fig. 6, inclined shaft 52 can be formed as one with eccentric wheel 51 Body formed part.

The lid of air bag seat 6 closes on pedestal 4, and air bag seat 6 is equipped with the matching hole 61 penetrated through in a thickness direction.Piston component Air bag 11 is located on air bag seat 6 in 1, and the utricule 112 of air bag 11 is placed in matching hole 61, and casing 113 may pass through corresponding cooperation Hole 61.Connecting bracket 12 is located between air bag seat 6 and offset assembly 5 in piston component 1, and connecting bracket 12 is connected with inclined shaft 52, And the connection stabilizer blade 121 in connecting bracket 12 is matched with casing 113.Wherein, one end of the separate eccentric wheel 51 of inclined shaft 52 is matched It closes in the connecting hole 1231 of connecting bracket 12.

The lid of upper cover 2 closes on air bag seat 6, and the pedestal disk 111 of air bag 11 is folded between upper cover 2 and air bag seat 6.? In the example of Fig. 4, the periphery of upper cover 2 extends downwardly out the first fastener 23, and the periphery of pedestal 4 is equipped with the second fastener 41, the One fastener 23 is fastened on the second fastener 41, so that upper cover 2 can be compacted air bag seat 6 and air bag 11.

Specifically, as shown in figure 3, air bag 11 includes pedestal disk 111, the utricule 112 and valve block for being located at 111 two sides of pedestal disk 1141, it limits in utricule 112 and is being penetrated through towards the side of pedestal disk 111 to form the air cavity 1120 of opening 1122, valve block The setting of 1141 adjacent openings 1122, the lid of upper cover 2 close on pedestal disk 111, and upper cover 2 is equipped with outlet duct 21, and valve block 1141 is stretched Enter into outlet duct 21, the internal perisporium in valve block 1141 and outlet duct 21 constitutes the exhaust valve of pumping 100.

When motor 3 operates, offset assembly 5 alternately squeezes and stretches utricule 112, the valve block when utricule 112 is stretched 1141 are fitted in block air cavity 1120 on the internal perisporium in outlet duct 21, the gas in air cavity 1120 when utricule 112 is extruded Valve block 1141 can be washed open to circulate, upper cover 2 is equipped with the pressurization protrusion 22 extending into air cavity 1120.

Pumping 100 according to an embodiment of the present invention, can be extend into the air cavity 1120 of air bag 11 by being arranged in upper cover 2 Pressurization protrusion 22, pressurization protrusion 22 can cooperate the compression of air cavity 1120 after reasonable moulding to increase pressure at expulsion, this increasing Pressure mode is simple and reasonable for structure, and cost is relatively low for upper cover 2.

In some embodiments, as shown in Figure 1, outlet duct 21 includes at least on the direction far from pressurization protrusion 22 The hole section 211 that two cross-sectional areas are sequentially reduced, distance are pressurized the part structure between the nearest two neighboring hole section 211 of protrusion 22 At water conservancy diversion step 212.The setting of water conservancy diversion step 212 makes the cross-sectional area in venthole road 21 towards at least contracting in discharge direction It is small, it ensure that the stability of airflow speed increasing, while can also play good guide functions.

Specifically, as shown in figure 4, the distance between water conservancy diversion step 212 and valve block 1141 L are 0.3mm~3mm.At this In distance range, the gas that outlet duct 21 is flowed back will not raise valve block 1141, to can avoid reflux gas for exhaust Valve block 1141, which is washed open, leads to gas leakage.

In some embodiments, as shown in figure 3, utricule 112 be it is multiple, multiple utricules 112 are each provided at the same of pedestal disk 111 Side, the side of the separate pedestal disk 111 of each utricule 112 are equipped with a casing 113, connecting bracket 12 be equipped with respectively with The one-to-one multiple connection stabilizer blades 121 of multiple casings 113.

In this way, multiple utricules 112 successively complete an air inlet pressure on air bag 11 after 12 activity a cycle of connecting bracket Contracting-exhaust process, working efficiency greatly improve, and capacity increases, compact-sized, small in size, and energy consumption is small.

Specifically, air bag 11 is equipped with multiple utricules 112, and multiple utricules 112 are separated around the centreline space of pedestal disk 111 Arrangement, air bag 11 further include: the tube wall of the valve pipe 114 being located on pedestal disk 111, valve pipe 114 is equipped with multiple separate utricules 112 Direction perforation fracture 1142, each fracture 1142 penetrates through on the thickness direction of tube wall, the two neighboring fracture of valve pipe 114 Part between 1142 forms valve block 1141.In this way, between the center line of the circular pedestal disk 111 of the multiple valve blocks 1141 formed is uniform Separate arrangement.Valve block 1141 is set, and not only beautiful but also easy processing demoulded.

Specifically, after valve pipe 114 extend into outlet duct 21, each valve block 1141 covers an outgassing groove 214, utricule When air cavity 1120 is pressurized by compression in 112, gas can rush at valve block 1141 by outgassing groove 214 in air cavity 1120, then from out It is discharged at stomata road 21.

Optionally, as shown in figure 3, being connected with reinforcing rib 115 between each valve block 1141 and pedestal disk 111, to improve Bonding strength between valve block 1141 and pedestal disk 111.The setting of reinforcing rib 115 can prevent valve block 1141 from deforming, and guarantee exhaust Valve block 1141 is easy to reset when valve does not work, to play the role of reinforcing sealing.And pumping air-tightness strengthens, and it would not Generate excessive noise.Specifically, air bag 11 is integrally formed part, i.e. valve pipe 114, pedestal disk 111, utricule 112 and casing 113 is It is integrally formed part, air bag 11 is whole to be made of flexible pieces such as rubber.

In some embodiments, as shown in figure 3, connecting bracket 12 includes: telophragma 122 and terminal pad 123, terminal pad 123 are respectively provided at the opposite sides of telophragma 122 with connection stabilizer blade 121, wherein terminal pad 123 is equipped with connecting hole 1231.

In some embodiments, multiple as shown in figure 3, connecting bracket 12 is equipped with convex block 124 in the side towards air bag 11 It connects stabilizer blade 121 and is spaced apart setting around convex block 124.Namely, convex block 124 be located at connecting bracket 12 towards air bag 11 1 The middle position of side, the setting of convex block 124 help to limit the movable amplitude of connecting bracket 12.In Fig. 4, air bag seat 6 It can be equipped with limiting slot 62 towards the center position of the side of connecting bracket 12, the convex block 124 of connecting bracket 12 can extend into limit In the slot 62 of position, the movable amplitude of connecting bracket 12 can be limited in this way.

In some embodiments, as shown in figure 3, limiting the direction opening for being directed away from air bag 11 in connection stabilizer blade 121 Snout cavity 1210, the second through-hole 1211 is formed on the bottom wall of snout cavity 1210.The weight of connecting bracket 12 can be mitigated significantly, First through hole 1121 can be blocked again.

Specifically, as shown in figure 3, when utricule 112 centerline in connection stabilizer blade 121 centerline in parallel State when, utricule 112 is neither inwardly squeezed nor is pulled outwardly, and first through hole 1121 is staggered with the second through-hole 1211 at this time It opens.In this way, the intake valve of utricule 112 remains off, i.e. gas when air bag 11 and 12 keeping parallelism state of connecting bracket The intake valve of capsule 11 is configured to normally off, ensure that the controllability of 100 jets of pumping.

In some embodiments, piston component 1 further includes breather check valve, and breather check valve is located in air bag 11, with control From the second through-hole 1211 towards 1120 one-way flow of air cavity, the setting of breather check valve can avoid gas backstreaming, guarantees gas processed Pressure at expulsion.

In some embodiments, as shown in Figure 1, one end cross-sectional area towards air bag 11 in outlet duct 21 increases with shape At flaring 213, the covering of valve pipe 114 flaring 213.Here, the covering of valve pipe 114 flaring 213 refers to valve pipe 114 in outlet duct Flaring 213 can be completely covered in projection on 21 inner peripheral surface, and fracture 1142 is not overlapped with flaring 213 on valve pipe 114 Part.

On the one hand the setting of flaring 213 can preferably be extend into outlet duct 21, with fitting convenient for valve block 1141 It, can direction when on the other hand can be pressurized convenient for 112 interior air-flow of utricule of air bag 11 by compression on the internal perisporium in outlet duct 21 The direction discharge of flaring 213, so as to the direction guiding by air-flow towards outlet duct 21.

The structure of pumping 100 in the embodiment of the present invention one is described referring to Fig. 1, Fig. 3 and Fig. 4.

On direction from top to bottom, air bag 11 includes the valve pipe 114 set gradually, pedestal disk 111, utricule 112 and set Pipe 113, utricule 112 are three, and three utricules 112 are equidistantly arranged.Pedestal disk 111 is formed as general triangular, three utricules 112 It is respectively provided on three angles of pedestal disk 111, arc transition processing is made at each angle of pedestal disk 111.

It is valve pipe 114 between the air cavity opening 1122 of three utricules 112, sets that there are three fractures on the tube wall of valve pipe 114 1142 to form three valve blocks 1141.In Fig. 3, the bottom of each air cavity 1120 is equipped with a first through hole 1121, each The inside of valve block 1141 is connected with reinforcing rib 115 between pedestal disk 111.

On direction from top to bottom, connecting bracket 12 includes the connection stabilizer blade 121 set gradually, telophragma 122 and connects Disk 123 is connect, connection stabilizer blade 121 is three, and three connection stabilizer blades 121 respectively correspond three casings 113 setting of air bag 11.Each It is equipped with the second through-hole 1211 on connection stabilizer blade 121, the second through-hole 1211 is staggered with first through hole 1121, to connect stabilizer blade 121 when parallel with 113 axis of casing, and connection stabilizer blade 121 can block completely.Connecting bracket 12 further includes connection rib 125, even Rib 125 is connected between terminal pad 123 and the opening for connecting stabilizer blade 121.

Lid closes and is equipped with outlet duct 21 in the upper cover 2 on air bag 11, and outlet duct 21 is located between three utricules 112. The internal perisporium in outlet duct 21 is equipped with downward open outgassing groove 214, and outgassing groove 214 is for three and evenly-spaced.Valve pipe 114 extend into outlet duct 21, and each valve block 1141 covers an outgassing groove 214 on valve pipe 114.

It is set on the bottom surface S of upper cover 2 there are three pressurization protrusion 22, raised 22 pairs of three pressurizations Dui Ying not an outgassing groove 214 settings, each pressurization protrusion 22 are equipped with first guide channel 221 and second guide channel 222.

The course of work of pumping 100 are as follows: after motor 3 is powered, connecting bracket 12 is put according to certain rules by the effect of offset assembly 5 It is dynamic.Three connection stabilizer blades 121 are set in connecting bracket 12 respectively along towards the direction of air bag 11 and far from the side of air bag 11 To making back and forth movement.

If if in certain moment, first 121 activity of connection stabilizer blade first through hole 1121 and the company in minimum point, air bag 11 It connects the second through-hole 1211 on stabilizer blade 121 to be connected to, air pressure is low in the air cavity 1120 of corresponding air bag 11, and gas can be inhaled into pedestal 4 In air cavity 1120.At this point, second connection stabilizer blade 121 is in an intermediate position, third connection stabilizer blade 121 is in extreme higher position, Air is compressed in the third connection corresponding utricule 112 of stabilizer blade 121, and the air cavity 1120 of the utricule 112 is because of breather check valve It limits and can not be discharged from first through hole 1121, compressed gas can be discharged by outlet duct 21 at this time.

Compressed gas discharge process is as follows: it is increased when utricule 112 is squeezed by the extruding air pressure of pressurization protrusion 22, boosting Air-flow can flow to corresponding outgassing groove 214 from along the first guide channel 221, the second guide channel 222.Then compressed gas is pushed open accordingly Valve block 1141 generates gap between valve block 1141 and the internal perisporium in outlet duct 21, so that gas can be discharged from outlet duct 21, Compressed gas forms high pressure gas and sprays.If 3 revolving speed of motor is higher, three 1120 air inlets of air cavity, exhaust velocity also can be faster, spray Gas gas output is bigger, and outlet air pressure is also higher.

When air bag 1 is extruded and compresses the gas in air cavity 1120, due to the effect of pressurization protrusion 22, so that air cavity Remaining gas flow is reduced in 1120, to increase the atmospheric pressure value of pumping 100 got.

After gas is discharged between valve block 1141 and the internal perisporium in outlet duct 21, arranged under the action of reinforcing rib 115 The valve block 1141 of air valve is more easier to reset, and valve block 1141 is fitted in again on the internal perisporium in outlet duct 21.

When pumping 100 stops working and when board state of pressure keeping, would generally be filled in external gas pressure lower production well road 21 Full gas, at this time due to the effect of water conservancy diversion step 212, external pressure will not directly impact the valve block 1141 of exhaust valve, also just not Meeting is so that valve block 1141 tilts, to play the role of sealed external gas, reduce noise.

Wherein, when pumping 100 air-breathing, gas can enter in pedestal 4 from 2 air inlet of upper cover (figure does not mark), with gas The increase of body pressure, gas push the bottom of air cavity 1120 open via the second through-hole 1211, and gas enters via first through hole 1121 In air cavity 1120, the valve block 1141 of valve pipe 114 is close to the internal perisporium in outlet duct 21 at this time, realizes gas replenishment process.

In embodiments of the present invention, pumping 100 may also include relief valve, to control pressure at expulsion.

In the description of the present invention, it is to be understood that, term " center ", " height ", " thickness ", "upper", "lower", " perpendicular Directly ", the orientation or positional relationship of the instructions such as "horizontal", "top", "bottom", "inner", "outside", " axial direction ", " radial direction ", " circumferential direction " is base In orientation or positional relationship shown in the drawings, it is merely for convenience of description of the present invention and simplification of the description, rather than indication or suggestion Signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to this The limitation of invention.

In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or Implicitly include one or more of the features.In the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two It is a or more than two.

In the description of the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be machinery Connection, is also possible to be electrically connected；It can be directly connected, two elements can also be can be indirectly connected through an intermediary The interaction relationship of internal connection or two elements.It for the ordinary skill in the art, can be with concrete condition Understand the concrete meaning of above-mentioned term in the present invention.

In the description of this specification, the description of reference term " embodiment ", " example " etc. mean combine the embodiment or Example particular features, structures, materials, or characteristics described are included at least one embodiment or example of the invention.At this In specification, schematic expression of the above terms be may not refer to the same embodiment or example.Moreover, description is specific Feature, structure, material or feature can be combined in any suitable manner in any one or more of the embodiments or examples.

Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that: not A variety of change, modification, replacement and modification can be carried out to these embodiments in the case where being detached from the principle of the present invention and objective, this The range of invention is defined by the claims and their equivalents.

Claims (11)

1. a kind of upper cover for pumping, the upper lid is equipped with outlet duct, and the upper cover is used to cover the air bag closed in pumping On, the air bag has the air cavity towards the upper cover gab, which is characterized in that the upper lid is described equipped with being adapted to project into Pressurization protrusion in air cavity.

2. the upper cover according to claim 1 for pumping, which is characterized in that in the direction towards the outlet duct On, the distance between the raised bottom of the pressurization and the bottom surface of the upper cover gradually increase.

3. the upper cover according to claim 1 for pumping, which is characterized in that the internal perisporium in the outlet duct is equipped with Outgassing groove, the outgassing groove are suitable for being connected to the air cavity.

4. the upper cover according to claim 3 for pumping, which is characterized in that the bottom surface of the pressurization protrusion, which is equipped with, prolongs Extend to the first guide channel of the outgassing groove.

5. the upper cover according to claim 4 for pumping, which is characterized in that the pressurization protrusion towards the outlet The side of the axis in duct be equipped with the second guide channel, the both ends of second guide channel respectively with first guide channel and institute Outgassing groove is stated to be connected.

6. the upper cover according to claim 3 for pumping, which is characterized in that be equipped with guiding muscle in the outgassing groove.

7. a kind of pumping, the pumping includes motor, offset assembly, air bag and upper cover, and the air bag includes pedestal disk, is located at institute The utricule and valve block of pedestal disk two sides are stated, limits and is penetrating through towards the side of the pedestal disk to form opening in the utricule Air cavity, the valve block is arranged adjacent to the opening, and the upper cover lid closes on the pedestal disk, and the upper lid is equipped with outlet Duct, the motor are connected with the offset assembly, and the offset assembly is connected with the utricule, operate when institute in the motor It states offset assembly and alternately squeezes and stretch the utricule, which is characterized in that the upper cover is to appoint according in claim 1-6 Upper cover described in one for pumping, the valve block are extend into the outlet duct, the valve block and the outlet duct Internal perisporium constitute the exhaust valve of the pumping, when the utricule is stretched, the valve block is fitted in the outlet duct To block the air cavity on peripheral wall, when the utricule is extruded, the gas intracavity gas can wash the valve block open to circulate, institute It states lid and is equipped with the pressurization protrusion extending into the air cavity.

8. pumping according to claim 7, which is characterized in that on the direction far from the pressurization protrusion, the outlet Duct includes at least the hole section that two cross-sectional areas are sequentially reduced, the two neighboring hole section nearest apart from the pressurization protrusion Between part constitute water conservancy diversion step, the distance between the water conservancy diversion step and the valve block be 0.3mm~3mm.

9. pumping according to claim 7, which is characterized in that be connected with reinforcement between the valve block and the pedestal disk Muscle.

10. pumping according to claim 7, which is characterized in that the air bag is equipped with multiple utricules, multiple described Center line spaced relation of the utricule around the pedestal disk, the air bag further include: the valve pipe being located on the pedestal disk, institute The tube wall for stating valve pipe is equipped with the fracture that the direction of multiple separate utricules penetrates through, thickness of each fracture in the tube wall Degree penetrates through on direction, and the part between the two neighboring fracture of the valve pipe forms the valve block.

11. pumping according to claim 10, which is characterized in that the one end towards the air bag in the outlet duct is horizontal Sectional area increases to form flaring, and the valve pipe covers the flaring.